diff options
Diffstat (limited to 'drivers/net/ethernet/amd')
28 files changed, 23475 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amd/7990.c b/drivers/net/ethernet/amd/7990.c new file mode 100644 index 000000000000..60b35fb5f524 --- /dev/null +++ b/drivers/net/ethernet/amd/7990.c @@ -0,0 +1,662 @@ +/* + * 7990.c -- LANCE ethernet IC generic routines. + * This is an attempt to separate out the bits of various ethernet + * drivers that are common because they all use the AMD 7990 LANCE + * (Local Area Network Controller for Ethernet) chip. + * + * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk> + * + * Most of this stuff was obtained by looking at other LANCE drivers, + * in particular a2065.[ch]. The AMD C-LANCE datasheet was also helpful. + * NB: this was made easy by the fact that Jes Sorensen had cleaned up + * most of a2025 and sunlance with the aim of merging them, so the + * common code was pretty obvious. + */ +#include <linux/crc32.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/route.h> +#include <linux/string.h> +#include <linux/skbuff.h> +#include <asm/irq.h> +/* Used for the temporal inet entries and routing */ +#include <linux/socket.h> +#include <linux/bitops.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/dma.h> +#include <asm/pgtable.h> +#ifdef CONFIG_HP300 +#include <asm/blinken.h> +#endif + +#include "7990.h" + +#define WRITERAP(lp,x) out_be16(lp->base + LANCE_RAP, (x)) +#define WRITERDP(lp,x) out_be16(lp->base + LANCE_RDP, (x)) +#define READRDP(lp) in_be16(lp->base + LANCE_RDP) + +#if defined(CONFIG_HPLANCE) || defined(CONFIG_HPLANCE_MODULE) +#include "hplance.h" + +#undef WRITERAP +#undef WRITERDP +#undef READRDP + +#if defined(CONFIG_MVME147_NET) || defined(CONFIG_MVME147_NET_MODULE) + +/* Lossage Factor Nine, Mr Sulu. */ +#define WRITERAP(lp,x) (lp->writerap(lp,x)) +#define WRITERDP(lp,x) (lp->writerdp(lp,x)) +#define READRDP(lp) (lp->readrdp(lp)) + +#else + +/* These inlines can be used if only CONFIG_HPLANCE is defined */ +static inline void WRITERAP(struct lance_private *lp, __u16 value) +{ + do { + out_be16(lp->base + HPLANCE_REGOFF + LANCE_RAP, value); + } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); +} + +static inline void WRITERDP(struct lance_private *lp, __u16 value) +{ + do { + out_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP, value); + } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); +} + +static inline __u16 READRDP(struct lance_private *lp) +{ + __u16 value; + do { + value = in_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP); + } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); + return value; +} + +#endif +#endif /* CONFIG_HPLANCE || CONFIG_HPLANCE_MODULE */ + +/* debugging output macros, various flavours */ +/* #define TEST_HITS */ +#ifdef UNDEF +#define PRINT_RINGS() \ +do { \ + int t; \ + for (t=0; t < RX_RING_SIZE; t++) { \ + printk("R%d: @(%02X %04X) len %04X, mblen %04X, bits %02X\n",\ + t, ib->brx_ring[t].rmd1_hadr, ib->brx_ring[t].rmd0,\ + ib->brx_ring[t].length,\ + ib->brx_ring[t].mblength, ib->brx_ring[t].rmd1_bits);\ + }\ + for (t=0; t < TX_RING_SIZE; t++) { \ + printk("T%d: @(%02X %04X) len %04X, misc %04X, bits %02X\n",\ + t, ib->btx_ring[t].tmd1_hadr, ib->btx_ring[t].tmd0,\ + ib->btx_ring[t].length,\ + ib->btx_ring[t].misc, ib->btx_ring[t].tmd1_bits);\ + }\ +} while (0) +#else +#define PRINT_RINGS() +#endif + +/* Load the CSR registers. The LANCE has to be STOPped when we do this! */ +static void load_csrs (struct lance_private *lp) +{ + volatile struct lance_init_block *aib = lp->lance_init_block; + int leptr; + + leptr = LANCE_ADDR (aib); + + WRITERAP(lp, LE_CSR1); /* load address of init block */ + WRITERDP(lp, leptr & 0xFFFF); + WRITERAP(lp, LE_CSR2); + WRITERDP(lp, leptr >> 16); + WRITERAP(lp, LE_CSR3); + WRITERDP(lp, lp->busmaster_regval); /* set byteswap/ALEctrl/byte ctrl */ + + /* Point back to csr0 */ + WRITERAP(lp, LE_CSR0); +} + +/* #define to 0 or 1 appropriately */ +#define DEBUG_IRING 0 +/* Set up the Lance Rx and Tx rings and the init block */ +static void lance_init_ring (struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_init_block *ib = lp->init_block; + volatile struct lance_init_block *aib; /* for LANCE_ADDR computations */ + int leptr; + int i; + + aib = lp->lance_init_block; + + lp->rx_new = lp->tx_new = 0; + lp->rx_old = lp->tx_old = 0; + + ib->mode = LE_MO_PROM; /* normal, enable Tx & Rx */ + + /* Copy the ethernet address to the lance init block + * Notice that we do a byteswap if we're big endian. + * [I think this is the right criterion; at least, sunlance, + * a2065 and atarilance do the byteswap and lance.c (PC) doesn't. + * However, the datasheet says that the BSWAP bit doesn't affect + * the init block, so surely it should be low byte first for + * everybody? Um.] + * We could define the ib->physaddr as three 16bit values and + * use (addr[1] << 8) | addr[0] & co, but this is more efficient. + */ +#ifdef __BIG_ENDIAN + ib->phys_addr [0] = dev->dev_addr [1]; + ib->phys_addr [1] = dev->dev_addr [0]; + ib->phys_addr [2] = dev->dev_addr [3]; + ib->phys_addr [3] = dev->dev_addr [2]; + ib->phys_addr [4] = dev->dev_addr [5]; + ib->phys_addr [5] = dev->dev_addr [4]; +#else + for (i=0; i<6; i++) + ib->phys_addr[i] = dev->dev_addr[i]; +#endif + + if (DEBUG_IRING) + printk ("TX rings:\n"); + + lp->tx_full = 0; + /* Setup the Tx ring entries */ + for (i = 0; i < (1<<lp->lance_log_tx_bufs); i++) { + leptr = LANCE_ADDR(&aib->tx_buf[i][0]); + ib->btx_ring [i].tmd0 = leptr; + ib->btx_ring [i].tmd1_hadr = leptr >> 16; + ib->btx_ring [i].tmd1_bits = 0; + ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */ + ib->btx_ring [i].misc = 0; + if (DEBUG_IRING) + printk ("%d: 0x%8.8x\n", i, leptr); + } + + /* Setup the Rx ring entries */ + if (DEBUG_IRING) + printk ("RX rings:\n"); + for (i = 0; i < (1<<lp->lance_log_rx_bufs); i++) { + leptr = LANCE_ADDR(&aib->rx_buf[i][0]); + + ib->brx_ring [i].rmd0 = leptr; + ib->brx_ring [i].rmd1_hadr = leptr >> 16; + ib->brx_ring [i].rmd1_bits = LE_R1_OWN; + /* 0xf000 == bits that must be one (reserved, presumably) */ + ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000; + ib->brx_ring [i].mblength = 0; + if (DEBUG_IRING) + printk ("%d: 0x%8.8x\n", i, leptr); + } + + /* Setup the initialization block */ + + /* Setup rx descriptor pointer */ + leptr = LANCE_ADDR(&aib->brx_ring); + ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16); + ib->rx_ptr = leptr; + if (DEBUG_IRING) + printk ("RX ptr: %8.8x\n", leptr); + + /* Setup tx descriptor pointer */ + leptr = LANCE_ADDR(&aib->btx_ring); + ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16); + ib->tx_ptr = leptr; + if (DEBUG_IRING) + printk ("TX ptr: %8.8x\n", leptr); + + /* Clear the multicast filter */ + ib->filter [0] = 0; + ib->filter [1] = 0; + PRINT_RINGS(); +} + +/* LANCE must be STOPped before we do this, too... */ +static int init_restart_lance (struct lance_private *lp) +{ + int i; + + WRITERAP(lp, LE_CSR0); + WRITERDP(lp, LE_C0_INIT); + + /* Need a hook here for sunlance ledma stuff */ + + /* Wait for the lance to complete initialization */ + for (i = 0; (i < 100) && !(READRDP(lp) & (LE_C0_ERR | LE_C0_IDON)); i++) + barrier(); + if ((i == 100) || (READRDP(lp) & LE_C0_ERR)) { + printk ("LANCE unopened after %d ticks, csr0=%4.4x.\n", i, READRDP(lp)); + return -1; + } + + /* Clear IDON by writing a "1", enable interrupts and start lance */ + WRITERDP(lp, LE_C0_IDON); + WRITERDP(lp, LE_C0_INEA | LE_C0_STRT); + + return 0; +} + +static int lance_reset (struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + int status; + + /* Stop the lance */ + WRITERAP(lp, LE_CSR0); + WRITERDP(lp, LE_C0_STOP); + + load_csrs (lp); + lance_init_ring (dev); + dev->trans_start = jiffies; /* prevent tx timeout */ + status = init_restart_lance (lp); +#ifdef DEBUG_DRIVER + printk ("Lance restart=%d\n", status); +#endif + return status; +} + +static int lance_rx (struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_init_block *ib = lp->init_block; + volatile struct lance_rx_desc *rd; + unsigned char bits; +#ifdef TEST_HITS + int i; +#endif + +#ifdef TEST_HITS + printk ("["); + for (i = 0; i < RX_RING_SIZE; i++) { + if (i == lp->rx_new) + printk ("%s", + ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "_" : "X"); + else + printk ("%s", + ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "." : "1"); + } + printk ("]"); +#endif +#ifdef CONFIG_HP300 + blinken_leds(0x40, 0); +#endif + WRITERDP(lp, LE_C0_RINT | LE_C0_INEA); /* ack Rx int, reenable ints */ + for (rd = &ib->brx_ring [lp->rx_new]; /* For each Rx ring we own... */ + !((bits = rd->rmd1_bits) & LE_R1_OWN); + rd = &ib->brx_ring [lp->rx_new]) { + + /* We got an incomplete frame? */ + if ((bits & LE_R1_POK) != LE_R1_POK) { + dev->stats.rx_over_errors++; + dev->stats.rx_errors++; + continue; + } else if (bits & LE_R1_ERR) { + /* Count only the end frame as a rx error, + * not the beginning + */ + if (bits & LE_R1_BUF) dev->stats.rx_fifo_errors++; + if (bits & LE_R1_CRC) dev->stats.rx_crc_errors++; + if (bits & LE_R1_OFL) dev->stats.rx_over_errors++; + if (bits & LE_R1_FRA) dev->stats.rx_frame_errors++; + if (bits & LE_R1_EOP) dev->stats.rx_errors++; + } else { + int len = (rd->mblength & 0xfff) - 4; + struct sk_buff *skb = dev_alloc_skb (len+2); + + if (!skb) { + printk ("%s: Memory squeeze, deferring packet.\n", + dev->name); + dev->stats.rx_dropped++; + rd->mblength = 0; + rd->rmd1_bits = LE_R1_OWN; + lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; + return 0; + } + + skb_reserve (skb, 2); /* 16 byte align */ + skb_put (skb, len); /* make room */ + skb_copy_to_linear_data(skb, + (unsigned char *)&(ib->rx_buf [lp->rx_new][0]), + len); + skb->protocol = eth_type_trans (skb, dev); + netif_rx (skb); + dev->stats.rx_packets++; + dev->stats.rx_bytes += len; + } + + /* Return the packet to the pool */ + rd->mblength = 0; + rd->rmd1_bits = LE_R1_OWN; + lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; + } + return 0; +} + +static int lance_tx (struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_init_block *ib = lp->init_block; + volatile struct lance_tx_desc *td; + int i, j; + int status; + +#ifdef CONFIG_HP300 + blinken_leds(0x80, 0); +#endif + /* csr0 is 2f3 */ + WRITERDP(lp, LE_C0_TINT | LE_C0_INEA); + /* csr0 is 73 */ + + j = lp->tx_old; + for (i = j; i != lp->tx_new; i = j) { + td = &ib->btx_ring [i]; + + /* If we hit a packet not owned by us, stop */ + if (td->tmd1_bits & LE_T1_OWN) + break; + + if (td->tmd1_bits & LE_T1_ERR) { + status = td->misc; + + dev->stats.tx_errors++; + if (status & LE_T3_RTY) dev->stats.tx_aborted_errors++; + if (status & LE_T3_LCOL) dev->stats.tx_window_errors++; + + if (status & LE_T3_CLOS) { + dev->stats.tx_carrier_errors++; + if (lp->auto_select) { + lp->tpe = 1 - lp->tpe; + printk("%s: Carrier Lost, trying %s\n", + dev->name, lp->tpe?"TPE":"AUI"); + /* Stop the lance */ + WRITERAP(lp, LE_CSR0); + WRITERDP(lp, LE_C0_STOP); + lance_init_ring (dev); + load_csrs (lp); + init_restart_lance (lp); + return 0; + } + } + + /* buffer errors and underflows turn off the transmitter */ + /* Restart the adapter */ + if (status & (LE_T3_BUF|LE_T3_UFL)) { + dev->stats.tx_fifo_errors++; + + printk ("%s: Tx: ERR_BUF|ERR_UFL, restarting\n", + dev->name); + /* Stop the lance */ + WRITERAP(lp, LE_CSR0); + WRITERDP(lp, LE_C0_STOP); + lance_init_ring (dev); + load_csrs (lp); + init_restart_lance (lp); + return 0; + } + } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) { + /* + * So we don't count the packet more than once. + */ + td->tmd1_bits &= ~(LE_T1_POK); + + /* One collision before packet was sent. */ + if (td->tmd1_bits & LE_T1_EONE) + dev->stats.collisions++; + + /* More than one collision, be optimistic. */ + if (td->tmd1_bits & LE_T1_EMORE) + dev->stats.collisions += 2; + + dev->stats.tx_packets++; + } + + j = (j + 1) & lp->tx_ring_mod_mask; + } + lp->tx_old = j; + WRITERDP(lp, LE_C0_TINT | LE_C0_INEA); + return 0; +} + +static irqreturn_t +lance_interrupt (int irq, void *dev_id) +{ + struct net_device *dev = (struct net_device *)dev_id; + struct lance_private *lp = netdev_priv(dev); + int csr0; + + spin_lock (&lp->devlock); + + WRITERAP(lp, LE_CSR0); /* LANCE Controller Status */ + csr0 = READRDP(lp); + + PRINT_RINGS(); + + if (!(csr0 & LE_C0_INTR)) { /* Check if any interrupt has */ + spin_unlock (&lp->devlock); + return IRQ_NONE; /* been generated by the Lance. */ + } + + /* Acknowledge all the interrupt sources ASAP */ + WRITERDP(lp, csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|LE_C0_INIT)); + + if ((csr0 & LE_C0_ERR)) { + /* Clear the error condition */ + WRITERDP(lp, LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA); + } + + if (csr0 & LE_C0_RINT) + lance_rx (dev); + + if (csr0 & LE_C0_TINT) + lance_tx (dev); + + /* Log misc errors. */ + if (csr0 & LE_C0_BABL) + dev->stats.tx_errors++; /* Tx babble. */ + if (csr0 & LE_C0_MISS) + dev->stats.rx_errors++; /* Missed a Rx frame. */ + if (csr0 & LE_C0_MERR) { + printk("%s: Bus master arbitration failure, status %4.4x.\n", + dev->name, csr0); + /* Restart the chip. */ + WRITERDP(lp, LE_C0_STRT); + } + + if (lp->tx_full && netif_queue_stopped(dev) && (TX_BUFFS_AVAIL >= 0)) { + lp->tx_full = 0; + netif_wake_queue (dev); + } + + WRITERAP(lp, LE_CSR0); + WRITERDP(lp, LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|LE_C0_IDON|LE_C0_INEA); + + spin_unlock (&lp->devlock); + return IRQ_HANDLED; +} + +int lance_open (struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + int res; + + /* Install the Interrupt handler. Or we could shunt this out to specific drivers? */ + if (request_irq(lp->irq, lance_interrupt, IRQF_SHARED, lp->name, dev)) + return -EAGAIN; + + res = lance_reset(dev); + spin_lock_init(&lp->devlock); + netif_start_queue (dev); + + return res; +} +EXPORT_SYMBOL_GPL(lance_open); + +int lance_close (struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + + netif_stop_queue (dev); + + /* Stop the LANCE */ + WRITERAP(lp, LE_CSR0); + WRITERDP(lp, LE_C0_STOP); + + free_irq(lp->irq, dev); + + return 0; +} +EXPORT_SYMBOL_GPL(lance_close); + +void lance_tx_timeout(struct net_device *dev) +{ + printk("lance_tx_timeout\n"); + lance_reset(dev); + dev->trans_start = jiffies; /* prevent tx timeout */ + netif_wake_queue (dev); +} +EXPORT_SYMBOL_GPL(lance_tx_timeout); + +int lance_start_xmit (struct sk_buff *skb, struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_init_block *ib = lp->init_block; + int entry, skblen, len; + static int outs; + unsigned long flags; + + if (!TX_BUFFS_AVAIL) + return NETDEV_TX_LOCKED; + + netif_stop_queue (dev); + + skblen = skb->len; + +#ifdef DEBUG_DRIVER + /* dump the packet */ + { + int i; + + for (i = 0; i < 64; i++) { + if ((i % 16) == 0) + printk ("\n"); + printk ("%2.2x ", skb->data [i]); + } + } +#endif + len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen; + entry = lp->tx_new & lp->tx_ring_mod_mask; + ib->btx_ring [entry].length = (-len) | 0xf000; + ib->btx_ring [entry].misc = 0; + + if (skb->len < ETH_ZLEN) + memset((void *)&ib->tx_buf[entry][0], 0, ETH_ZLEN); + skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen); + + /* Now, give the packet to the lance */ + ib->btx_ring [entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN); + lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask; + + outs++; + /* Kick the lance: transmit now */ + WRITERDP(lp, LE_C0_INEA | LE_C0_TDMD); + dev_kfree_skb (skb); + + spin_lock_irqsave (&lp->devlock, flags); + if (TX_BUFFS_AVAIL) + netif_start_queue (dev); + else + lp->tx_full = 1; + spin_unlock_irqrestore (&lp->devlock, flags); + + return NETDEV_TX_OK; +} +EXPORT_SYMBOL_GPL(lance_start_xmit); + +/* taken from the depca driver via a2065.c */ +static void lance_load_multicast (struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_init_block *ib = lp->init_block; + volatile u16 *mcast_table = (u16 *)&ib->filter; + struct netdev_hw_addr *ha; + u32 crc; + + /* set all multicast bits */ + if (dev->flags & IFF_ALLMULTI){ + ib->filter [0] = 0xffffffff; + ib->filter [1] = 0xffffffff; + return; + } + /* clear the multicast filter */ + ib->filter [0] = 0; + ib->filter [1] = 0; + + /* Add addresses */ + netdev_for_each_mc_addr(ha, dev) { + crc = ether_crc_le(6, ha->addr); + crc = crc >> 26; + mcast_table [crc >> 4] |= 1 << (crc & 0xf); + } +} + + +void lance_set_multicast (struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_init_block *ib = lp->init_block; + int stopped; + + stopped = netif_queue_stopped(dev); + if (!stopped) + netif_stop_queue (dev); + + while (lp->tx_old != lp->tx_new) + schedule(); + + WRITERAP(lp, LE_CSR0); + WRITERDP(lp, LE_C0_STOP); + lance_init_ring (dev); + + if (dev->flags & IFF_PROMISC) { + ib->mode |= LE_MO_PROM; + } else { + ib->mode &= ~LE_MO_PROM; + lance_load_multicast (dev); + } + load_csrs (lp); + init_restart_lance (lp); + + if (!stopped) + netif_start_queue (dev); +} +EXPORT_SYMBOL_GPL(lance_set_multicast); + +#ifdef CONFIG_NET_POLL_CONTROLLER +void lance_poll(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + + spin_lock (&lp->devlock); + WRITERAP(lp, LE_CSR0); + WRITERDP(lp, LE_C0_STRT); + spin_unlock (&lp->devlock); + lance_interrupt(dev->irq, dev); +} +#endif + +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ethernet/amd/7990.h b/drivers/net/ethernet/amd/7990.h new file mode 100644 index 000000000000..0a5837b96421 --- /dev/null +++ b/drivers/net/ethernet/amd/7990.h @@ -0,0 +1,254 @@ +/* + * 7990.h -- LANCE ethernet IC generic routines. + * This is an attempt to separate out the bits of various ethernet + * drivers that are common because they all use the AMD 7990 LANCE + * (Local Area Network Controller for Ethernet) chip. + * + * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk> + * + * Most of this stuff was obtained by looking at other LANCE drivers, + * in particular a2065.[ch]. The AMD C-LANCE datasheet was also helpful. + */ + +#ifndef _7990_H +#define _7990_H + +/* The lance only has two register locations. We communicate mostly via memory. */ +#define LANCE_RDP 0 /* Register Data Port */ +#define LANCE_RAP 2 /* Register Address Port */ + +/* Transmit/receive ring definitions. + * We allow the specific drivers to override these defaults if they want to. + * NB: according to lance.c, increasing the number of buffers is a waste + * of space and reduces the chance that an upper layer will be able to + * reorder queued Tx packets based on priority. [Clearly there is a minimum + * limit too: too small and we drop rx packets and can't tx at full speed.] + * 4+4 seems to be the usual setting; the atarilance driver uses 3 and 5. + */ + +/* Blast! This won't work. The problem is that we can't specify a default + * setting because that would cause the lance_init_block struct to be + * too long (and overflow the RAM on shared-memory cards like the HP LANCE. + */ +#ifndef LANCE_LOG_TX_BUFFERS +#define LANCE_LOG_TX_BUFFERS 1 +#define LANCE_LOG_RX_BUFFERS 3 +#endif + +#define TX_RING_SIZE (1<<LANCE_LOG_TX_BUFFERS) +#define RX_RING_SIZE (1<<LANCE_LOG_RX_BUFFERS) +#define TX_RING_MOD_MASK (TX_RING_SIZE - 1) +#define RX_RING_MOD_MASK (RX_RING_SIZE - 1) +#define TX_RING_LEN_BITS ((LANCE_LOG_TX_BUFFERS) << 29) +#define RX_RING_LEN_BITS ((LANCE_LOG_RX_BUFFERS) << 29) +#define PKT_BUFF_SIZE (1544) +#define RX_BUFF_SIZE PKT_BUFF_SIZE +#define TX_BUFF_SIZE PKT_BUFF_SIZE + +/* Each receive buffer is described by a receive message descriptor (RMD) */ +struct lance_rx_desc { + volatile unsigned short rmd0; /* low address of packet */ + volatile unsigned char rmd1_bits; /* descriptor bits */ + volatile unsigned char rmd1_hadr; /* high address of packet */ + volatile short length; /* This length is 2s complement (negative)! + * Buffer length + */ + volatile unsigned short mblength; /* Actual number of bytes received */ +}; + +/* Ditto for TMD: */ +struct lance_tx_desc { + volatile unsigned short tmd0; /* low address of packet */ + volatile unsigned char tmd1_bits; /* descriptor bits */ + volatile unsigned char tmd1_hadr; /* high address of packet */ + volatile short length; /* Length is 2s complement (negative)! */ + volatile unsigned short misc; +}; + +/* There are three memory structures accessed by the LANCE: + * the initialization block, the receive and transmit descriptor rings, + * and the data buffers themselves. In fact we might as well put the + * init block,the Tx and Rx rings and the buffers together in memory: + */ +struct lance_init_block { + volatile unsigned short mode; /* Pre-set mode (reg. 15) */ + volatile unsigned char phys_addr[6]; /* Physical ethernet address */ + volatile unsigned filter[2]; /* Multicast filter (64 bits) */ + + /* Receive and transmit ring base, along with extra bits. */ + volatile unsigned short rx_ptr; /* receive descriptor addr */ + volatile unsigned short rx_len; /* receive len and high addr */ + volatile unsigned short tx_ptr; /* transmit descriptor addr */ + volatile unsigned short tx_len; /* transmit len and high addr */ + + /* The Tx and Rx ring entries must be aligned on 8-byte boundaries. + * This will be true if this whole struct is 8-byte aligned. + */ + volatile struct lance_tx_desc btx_ring[TX_RING_SIZE]; + volatile struct lance_rx_desc brx_ring[RX_RING_SIZE]; + + volatile char tx_buf [TX_RING_SIZE][TX_BUFF_SIZE]; + volatile char rx_buf [RX_RING_SIZE][RX_BUFF_SIZE]; + /* we use this just to make the struct big enough that we can move its startaddr + * in order to force alignment to an eight byte boundary. + */ +}; + +/* This is where we keep all the stuff the driver needs to know about. + * I'm definitely unhappy about the mechanism for allowing specific + * drivers to add things... + */ +struct lance_private +{ + char *name; + unsigned long base; + volatile struct lance_init_block *init_block; /* CPU address of RAM */ + volatile struct lance_init_block *lance_init_block; /* LANCE address of RAM */ + + int rx_new, tx_new; + int rx_old, tx_old; + + int lance_log_rx_bufs, lance_log_tx_bufs; + int rx_ring_mod_mask, tx_ring_mod_mask; + + int tpe; /* TPE is selected */ + int auto_select; /* cable-selection is by carrier */ + unsigned short busmaster_regval; + + unsigned int irq; /* IRQ to register */ + + /* This is because the HP LANCE is disgusting and you have to check + * a DIO-specific register every time you read/write the LANCE regs :-< + * [could we get away with making these some sort of macro?] + */ + void (*writerap)(void *, unsigned short); + void (*writerdp)(void *, unsigned short); + unsigned short (*readrdp)(void *); + spinlock_t devlock; + char tx_full; +}; + +/* + * Am7990 Control and Status Registers + */ +#define LE_CSR0 0x0000 /* LANCE Controller Status */ +#define LE_CSR1 0x0001 /* IADR[15:0] (bit0==0 ie word aligned) */ +#define LE_CSR2 0x0002 /* IADR[23:16] (high bits reserved) */ +#define LE_CSR3 0x0003 /* Misc */ + +/* + * Bit definitions for CSR0 (LANCE Controller Status) + */ +#define LE_C0_ERR 0x8000 /* Error = BABL | CERR | MISS | MERR */ +#define LE_C0_BABL 0x4000 /* Babble: Transmitted too many bits */ +#define LE_C0_CERR 0x2000 /* No Heartbeat (10BASE-T) */ +#define LE_C0_MISS 0x1000 /* Missed Frame (no rx buffer to put it in) */ +#define LE_C0_MERR 0x0800 /* Memory Error */ +#define LE_C0_RINT 0x0400 /* Receive Interrupt */ +#define LE_C0_TINT 0x0200 /* Transmit Interrupt */ +#define LE_C0_IDON 0x0100 /* Initialization Done */ +#define LE_C0_INTR 0x0080 /* Interrupt Flag + = BABL | MISS | MERR | RINT | TINT | IDON */ +#define LE_C0_INEA 0x0040 /* Interrupt Enable */ +#define LE_C0_RXON 0x0020 /* Receive On */ +#define LE_C0_TXON 0x0010 /* Transmit On */ +#define LE_C0_TDMD 0x0008 /* Transmit Demand */ +#define LE_C0_STOP 0x0004 /* Stop */ +#define LE_C0_STRT 0x0002 /* Start */ +#define LE_C0_INIT 0x0001 /* Initialize */ + + +/* + * Bit definitions for CSR3 + */ +#define LE_C3_BSWP 0x0004 /* Byte Swap + (on for big endian byte order) */ +#define LE_C3_ACON 0x0002 /* ALE Control + (on for active low ALE) */ +#define LE_C3_BCON 0x0001 /* Byte Control */ + + +/* + * Mode Flags + */ +#define LE_MO_PROM 0x8000 /* Promiscuous Mode */ +/* these next ones 0x4000 -- 0x0080 are not available on the LANCE 7990, + * but they are in NetBSD's am7990.h, presumably for backwards-compatible chips + */ +#define LE_MO_DRCVBC 0x4000 /* disable receive broadcast */ +#define LE_MO_DRCVPA 0x2000 /* disable physical address detection */ +#define LE_MO_DLNKTST 0x1000 /* disable link status */ +#define LE_MO_DAPC 0x0800 /* disable automatic polarity correction */ +#define LE_MO_MENDECL 0x0400 /* MENDEC loopback mode */ +#define LE_MO_LRTTSEL 0x0200 /* lower RX threshold / TX mode selection */ +#define LE_MO_PSEL1 0x0100 /* port selection bit1 */ +#define LE_MO_PSEL0 0x0080 /* port selection bit0 */ +/* and this one is from the C-LANCE data sheet... */ +#define LE_MO_EMBA 0x0080 /* Enable Modified Backoff Algorithm + (C-LANCE, not original LANCE) */ +#define LE_MO_INTL 0x0040 /* Internal Loopback */ +#define LE_MO_DRTY 0x0020 /* Disable Retry */ +#define LE_MO_FCOLL 0x0010 /* Force Collision */ +#define LE_MO_DXMTFCS 0x0008 /* Disable Transmit CRC */ +#define LE_MO_LOOP 0x0004 /* Loopback Enable */ +#define LE_MO_DTX 0x0002 /* Disable Transmitter */ +#define LE_MO_DRX 0x0001 /* Disable Receiver */ + + +/* + * Receive Flags + */ +#define LE_R1_OWN 0x80 /* LANCE owns the descriptor */ +#define LE_R1_ERR 0x40 /* Error */ +#define LE_R1_FRA 0x20 /* Framing Error */ +#define LE_R1_OFL 0x10 /* Overflow Error */ +#define LE_R1_CRC 0x08 /* CRC Error */ +#define LE_R1_BUF 0x04 /* Buffer Error */ +#define LE_R1_SOP 0x02 /* Start of Packet */ +#define LE_R1_EOP 0x01 /* End of Packet */ +#define LE_R1_POK 0x03 /* Packet is complete: SOP + EOP */ + + +/* + * Transmit Flags + */ +#define LE_T1_OWN 0x80 /* LANCE owns the descriptor */ +#define LE_T1_ERR 0x40 /* Error */ +#define LE_T1_RES 0x20 /* Reserved, LANCE writes this with a zero */ +#define LE_T1_EMORE 0x10 /* More than one retry needed */ +#define LE_T1_EONE 0x08 /* One retry needed */ +#define LE_T1_EDEF 0x04 /* Deferred */ +#define LE_T1_SOP 0x02 /* Start of Packet */ +#define LE_T1_EOP 0x01 /* End of Packet */ +#define LE_T1_POK 0x03 /* Packet is complete: SOP + EOP */ + +/* + * Error Flags + */ +#define LE_T3_BUF 0x8000 /* Buffer Error */ +#define LE_T3_UFL 0x4000 /* Underflow Error */ +#define LE_T3_LCOL 0x1000 /* Late Collision */ +#define LE_T3_CLOS 0x0800 /* Loss of Carrier */ +#define LE_T3_RTY 0x0400 /* Retry Error */ +#define LE_T3_TDR 0x03ff /* Time Domain Reflectometry */ + +/* Miscellaneous useful macros */ + +#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ + lp->tx_old+lp->tx_ring_mod_mask-lp->tx_new:\ + lp->tx_old - lp->tx_new-1) + +/* The LANCE only uses 24 bit addresses. This does the obvious thing. */ +#define LANCE_ADDR(x) ((int)(x) & ~0xff000000) + +/* Now the prototypes we export */ +extern int lance_open(struct net_device *dev); +extern int lance_close (struct net_device *dev); +extern int lance_start_xmit (struct sk_buff *skb, struct net_device *dev); +extern void lance_set_multicast (struct net_device *dev); +extern void lance_tx_timeout(struct net_device *dev); +#ifdef CONFIG_NET_POLL_CONTROLLER +extern void lance_poll(struct net_device *dev); +#endif + +#endif /* ndef _7990_H */ diff --git a/drivers/net/ethernet/amd/Kconfig b/drivers/net/ethernet/amd/Kconfig new file mode 100644 index 000000000000..238b537b68fe --- /dev/null +++ b/drivers/net/ethernet/amd/Kconfig @@ -0,0 +1,195 @@ +# +# AMD network device configuration +# + +config NET_VENDOR_AMD + bool "AMD devices" + default y + depends on DIO || MACH_DECSTATION || MVME147 || ATARI || SUN3 || \ + SUN3X || SBUS || PCI || ZORRO || (ISA && ISA_DMA_API) || \ + (ARM && ARCH_EBSA110) || ISA || EISA || MCA || PCMCIA + ---help--- + If you have a network (Ethernet) chipset belonging to this class, + say Y. + + Note that the answer to this question does not directly affect + the kernel: saying N will just case the configurator to skip all + the questions regarding AMD chipsets. If you say Y, you will be asked + for your specific chipset/driver in the following questions. + +if NET_VENDOR_AMD + +config A2065 + tristate "A2065 support" + depends on ZORRO + select CRC32 + ---help--- + If you have a Commodore A2065 Ethernet adapter, say Y. Otherwise, + say N. + + To compile this driver as a module, choose M here: the module + will be called a2065. + +config AMD8111_ETH + tristate "AMD 8111 (new PCI LANCE) support" + depends on PCI + select CRC32 + select NET_CORE + select MII + ---help--- + If you have an AMD 8111-based PCI LANCE ethernet card, + answer Y here and read the Ethernet-HOWTO, available from + <http://www.tldp.org/docs.html#howto>. + + To compile this driver as a module, choose M here. The module + will be called amd8111e. + +config LANCE + tristate "AMD LANCE and PCnet (AT1500 and NE2100) support" + depends on ISA && ISA_DMA_API + ---help--- + If you have a network (Ethernet) card of this type, say Y and read + the Ethernet-HOWTO, available from + <http://www.tldp.org/docs.html#howto>. Some LinkSys cards are + of this type. + + To compile this driver as a module, choose M here: the module + will be called lance. This is recommended. + +config PCNET32 + tristate "AMD PCnet32 PCI support" + depends on PCI + select CRC32 + select NET_CORE + select MII + ---help--- + If you have a PCnet32 or PCnetPCI based network (Ethernet) card, + answer Y here and read the Ethernet-HOWTO, available from + <http://www.tldp.org/docs.html#howto>. + + To compile this driver as a module, choose M here. The module + will be called pcnet32. + +config ARIADNE + tristate "Ariadne support" + depends on ZORRO + ---help--- + If you have a Village Tronic Ariadne Ethernet adapter, say Y. + Otherwise, say N. + + To compile this driver as a module, choose M here: the module + will be called ariadne. + +config ARM_AM79C961A + bool "ARM EBSA110 AM79C961A support" + depends on ARM && ARCH_EBSA110 + select CRC32 + ---help--- + If you wish to compile a kernel for the EBSA-110, then you should + always answer Y to this. + +config ATARILANCE + tristate "Atari LANCE support" + depends on ATARI + ---help--- + Say Y to include support for several Atari Ethernet adapters based + on the AMD LANCE chipset: RieblCard (with or without battery), or + PAMCard VME (also the version by Rhotron, with different addresses). + +config DECLANCE + tristate "DEC LANCE ethernet controller support" + depends on MACH_DECSTATION + select CRC32 + ---help--- + This driver is for the series of Ethernet controllers produced by + DEC (now Compaq) based on the AMD LANCE chipset, including the + DEPCA series. (This chipset is better known via the NE2100 cards.) + +config DEPCA + tristate "DEPCA, DE10x, DE200, DE201, DE202, DE422 support" + depends on (ISA || EISA || MCA) + select CRC32 + ---help--- + If you have a network (Ethernet) card of this type, say Y and read + the Ethernet-HOWTO, available from + <http://www.tldp.org/docs.html#howto> as well as + <file:drivers/net/depca.c>. + + To compile this driver as a module, choose M here. The module + will be called depca. + +config HPLANCE + bool "HP on-board LANCE support" + depends on DIO + select CRC32 + ---help--- + If you want to use the builtin "LANCE" Ethernet controller on an + HP300 machine, say Y here. + +config MIPS_AU1X00_ENET + tristate "MIPS AU1000 Ethernet support" + depends on MIPS_ALCHEMY + select PHYLIB + select CRC32 + ---help--- + If you have an Alchemy Semi AU1X00 based system + say Y. Otherwise, say N. + +config MVME147_NET + tristate "MVME147 (LANCE) Ethernet support" + depends on MVME147 + select CRC32 + ---help--- + Support for the on-board Ethernet interface on the Motorola MVME147 + single-board computer. Say Y here to include the + driver for this chip in your kernel. + To compile this driver as a module, choose M here. + +config PCMCIA_NMCLAN + tristate "New Media PCMCIA support" + depends on PCMCIA + help + Say Y here if you intend to attach a New Media Ethernet or LiveWire + PCMCIA (PC-card) Ethernet card to your computer. + + To compile this driver as a module, choose M here: the module will be + called nmclan_cs. If unsure, say N. + +config NI65 + tristate "NI6510 support" + depends on ISA && ISA_DMA_API + ---help--- + If you have a network (Ethernet) card of this type, say Y and read + the Ethernet-HOWTO, available from + <http://www.tldp.org/docs.html#howto>. + + To compile this driver as a module, choose M here. The module + will be called ni65. + +config SUN3LANCE + tristate "Sun3/Sun3x on-board LANCE support" + depends on (SUN3 || SUN3X) + ---help--- + Most Sun3 and Sun3x motherboards (including the 3/50, 3/60 and 3/80) + featured an AMD LANCE 10Mbit Ethernet controller on board; say Y + here to compile in the Linux driver for this and enable Ethernet. + General Linux information on the Sun 3 and 3x series (now + discontinued) is at + <http://www.angelfire.com/ca2/tech68k/sun3.html>. + + If you're not building a kernel for a Sun 3, say N. + +config SUNLANCE + tristate "Sun LANCE support" + depends on SBUS + select CRC32 + ---help--- + This driver supports the "le" interface present on all 32-bit Sparc + systems, on some older Ultra systems and as an Sbus option. These + cards are based on the AMD LANCE chipset, which is better known + via the NE2100 cards. + + To compile this driver as a module, choose M here: the module + will be called sunlance. + +endif # NET_VENDOR_AMD diff --git a/drivers/net/ethernet/amd/Makefile b/drivers/net/ethernet/amd/Makefile new file mode 100644 index 000000000000..175caa5328c9 --- /dev/null +++ b/drivers/net/ethernet/amd/Makefile @@ -0,0 +1,20 @@ +# +# Makefile for the AMD network device drivers. +# + +obj-$(CONFIG_A2065) += a2065.o +obj-$(CONFIG_AMD8111_ETH) += amd8111e.o +obj-$(CONFIG_ARM_AM79C961A) += am79c961a.o +obj-$(CONFIG_ARIADNE) += ariadne.o +obj-$(CONFIG_ATARILANCE) += atarilance.o +obj-$(CONFIG_DECLANCE) += declance.o +obj-$(CONFIG_DEPCA) += depca.o +obj-$(CONFIG_HPLANCE) += hplance.o 7990.o +obj-$(CONFIG_LANCE) += lance.o +obj-$(CONFIG_MIPS_AU1X00_ENET) += au1000_eth.o +obj-$(CONFIG_MVME147_NET) += mvme147.o 7990.o +obj-$(CONFIG_PCMCIA_NMCLAN) += nmclan_cs.o +obj-$(CONFIG_NI65) += ni65.o +obj-$(CONFIG_PCNET32) += pcnet32.o +obj-$(CONFIG_SUN3LANCE) += sun3lance.o +obj-$(CONFIG_SUNLANCE) += sunlance.o diff --git a/drivers/net/ethernet/amd/a2065.c b/drivers/net/ethernet/amd/a2065.c new file mode 100644 index 000000000000..825e5d4ef4c3 --- /dev/null +++ b/drivers/net/ethernet/amd/a2065.c @@ -0,0 +1,781 @@ +/* + * Amiga Linux/68k A2065 Ethernet Driver + * + * (C) Copyright 1995-2003 by Geert Uytterhoeven <geert@linux-m68k.org> + * + * Fixes and tips by: + * - Janos Farkas (CHEXUM@sparta.banki.hu) + * - Jes Degn Soerensen (jds@kom.auc.dk) + * - Matt Domsch (Matt_Domsch@dell.com) + * + * ---------------------------------------------------------------------------- + * + * This program is based on + * + * ariadne.?: Amiga Linux/68k Ariadne Ethernet Driver + * (C) Copyright 1995 by Geert Uytterhoeven, + * Peter De Schrijver + * + * lance.c: An AMD LANCE ethernet driver for linux. + * Written 1993-94 by Donald Becker. + * + * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller + * Advanced Micro Devices + * Publication #16907, Rev. B, Amendment/0, May 1994 + * + * ---------------------------------------------------------------------------- + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of the Linux + * distribution for more details. + * + * ---------------------------------------------------------------------------- + * + * The A2065 is a Zorro-II board made by Commodore/Ameristar. It contains: + * + * - an Am7990 Local Area Network Controller for Ethernet (LANCE) with + * both 10BASE-2 (thin coax) and AUI (DB-15) connectors + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +/*#define DEBUG*/ +/*#define TEST_HITS*/ + +#include <linux/errno.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/module.h> +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/skbuff.h> +#include <linux/string.h> +#include <linux/init.h> +#include <linux/crc32.h> +#include <linux/zorro.h> +#include <linux/bitops.h> + +#include <asm/irq.h> +#include <asm/amigaints.h> +#include <asm/amigahw.h> + +#include "a2065.h" + +/* Transmit/Receive Ring Definitions */ + +#define LANCE_LOG_TX_BUFFERS (2) +#define LANCE_LOG_RX_BUFFERS (4) + +#define TX_RING_SIZE (1 << LANCE_LOG_TX_BUFFERS) +#define RX_RING_SIZE (1 << LANCE_LOG_RX_BUFFERS) + +#define TX_RING_MOD_MASK (TX_RING_SIZE - 1) +#define RX_RING_MOD_MASK (RX_RING_SIZE - 1) + +#define PKT_BUF_SIZE (1544) +#define RX_BUFF_SIZE PKT_BUF_SIZE +#define TX_BUFF_SIZE PKT_BUF_SIZE + +/* Layout of the Lance's RAM Buffer */ + +struct lance_init_block { + unsigned short mode; /* Pre-set mode (reg. 15) */ + unsigned char phys_addr[6]; /* Physical ethernet address */ + unsigned filter[2]; /* Multicast filter. */ + + /* Receive and transmit ring base, along with extra bits. */ + unsigned short rx_ptr; /* receive descriptor addr */ + unsigned short rx_len; /* receive len and high addr */ + unsigned short tx_ptr; /* transmit descriptor addr */ + unsigned short tx_len; /* transmit len and high addr */ + + /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */ + struct lance_rx_desc brx_ring[RX_RING_SIZE]; + struct lance_tx_desc btx_ring[TX_RING_SIZE]; + + char rx_buf[RX_RING_SIZE][RX_BUFF_SIZE]; + char tx_buf[TX_RING_SIZE][TX_BUFF_SIZE]; +}; + +/* Private Device Data */ + +struct lance_private { + char *name; + volatile struct lance_regs *ll; + volatile struct lance_init_block *init_block; /* Hosts view */ + volatile struct lance_init_block *lance_init_block; /* Lance view */ + + int rx_new, tx_new; + int rx_old, tx_old; + + int lance_log_rx_bufs, lance_log_tx_bufs; + int rx_ring_mod_mask, tx_ring_mod_mask; + + int tpe; /* cable-selection is TPE */ + int auto_select; /* cable-selection by carrier */ + unsigned short busmaster_regval; + +#ifdef CONFIG_SUNLANCE + struct Linux_SBus_DMA *ledma; /* if set this points to ledma and arch=4m */ + int burst_sizes; /* ledma SBus burst sizes */ +#endif + struct timer_list multicast_timer; +}; + +#define LANCE_ADDR(x) ((int)(x) & ~0xff000000) + +/* Load the CSR registers */ +static void load_csrs(struct lance_private *lp) +{ + volatile struct lance_regs *ll = lp->ll; + volatile struct lance_init_block *aib = lp->lance_init_block; + int leptr = LANCE_ADDR(aib); + + ll->rap = LE_CSR1; + ll->rdp = (leptr & 0xFFFF); + ll->rap = LE_CSR2; + ll->rdp = leptr >> 16; + ll->rap = LE_CSR3; + ll->rdp = lp->busmaster_regval; + + /* Point back to csr0 */ + ll->rap = LE_CSR0; +} + +/* Setup the Lance Rx and Tx rings */ +static void lance_init_ring(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_init_block *ib = lp->init_block; + volatile struct lance_init_block *aib = lp->lance_init_block; + /* for LANCE_ADDR computations */ + int leptr; + int i; + + /* Lock out other processes while setting up hardware */ + netif_stop_queue(dev); + lp->rx_new = lp->tx_new = 0; + lp->rx_old = lp->tx_old = 0; + + ib->mode = 0; + + /* Copy the ethernet address to the lance init block + * Note that on the sparc you need to swap the ethernet address. + */ + ib->phys_addr[0] = dev->dev_addr[1]; + ib->phys_addr[1] = dev->dev_addr[0]; + ib->phys_addr[2] = dev->dev_addr[3]; + ib->phys_addr[3] = dev->dev_addr[2]; + ib->phys_addr[4] = dev->dev_addr[5]; + ib->phys_addr[5] = dev->dev_addr[4]; + + /* Setup the Tx ring entries */ + netdev_dbg(dev, "TX rings:\n"); + for (i = 0; i <= 1 << lp->lance_log_tx_bufs; i++) { + leptr = LANCE_ADDR(&aib->tx_buf[i][0]); + ib->btx_ring[i].tmd0 = leptr; + ib->btx_ring[i].tmd1_hadr = leptr >> 16; + ib->btx_ring[i].tmd1_bits = 0; + ib->btx_ring[i].length = 0xf000; /* The ones required by tmd2 */ + ib->btx_ring[i].misc = 0; + if (i < 3) + netdev_dbg(dev, "%d: 0x%08x\n", i, leptr); + } + + /* Setup the Rx ring entries */ + netdev_dbg(dev, "RX rings:\n"); + for (i = 0; i < 1 << lp->lance_log_rx_bufs; i++) { + leptr = LANCE_ADDR(&aib->rx_buf[i][0]); + + ib->brx_ring[i].rmd0 = leptr; + ib->brx_ring[i].rmd1_hadr = leptr >> 16; + ib->brx_ring[i].rmd1_bits = LE_R1_OWN; + ib->brx_ring[i].length = -RX_BUFF_SIZE | 0xf000; + ib->brx_ring[i].mblength = 0; + if (i < 3) + netdev_dbg(dev, "%d: 0x%08x\n", i, leptr); + } + + /* Setup the initialization block */ + + /* Setup rx descriptor pointer */ + leptr = LANCE_ADDR(&aib->brx_ring); + ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16); + ib->rx_ptr = leptr; + netdev_dbg(dev, "RX ptr: %08x\n", leptr); + + /* Setup tx descriptor pointer */ + leptr = LANCE_ADDR(&aib->btx_ring); + ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16); + ib->tx_ptr = leptr; + netdev_dbg(dev, "TX ptr: %08x\n", leptr); + + /* Clear the multicast filter */ + ib->filter[0] = 0; + ib->filter[1] = 0; +} + +static int init_restart_lance(struct lance_private *lp) +{ + volatile struct lance_regs *ll = lp->ll; + int i; + + ll->rap = LE_CSR0; + ll->rdp = LE_C0_INIT; + + /* Wait for the lance to complete initialization */ + for (i = 0; (i < 100) && !(ll->rdp & (LE_C0_ERR | LE_C0_IDON)); i++) + barrier(); + if ((i == 100) || (ll->rdp & LE_C0_ERR)) { + pr_err("unopened after %d ticks, csr0=%04x\n", i, ll->rdp); + return -EIO; + } + + /* Clear IDON by writing a "1", enable interrupts and start lance */ + ll->rdp = LE_C0_IDON; + ll->rdp = LE_C0_INEA | LE_C0_STRT; + + return 0; +} + +static int lance_rx(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_init_block *ib = lp->init_block; + volatile struct lance_regs *ll = lp->ll; + volatile struct lance_rx_desc *rd; + unsigned char bits; + +#ifdef TEST_HITS + int i; + char buf[RX_RING_SIZE + 1]; + + for (i = 0; i < RX_RING_SIZE; i++) { + char r1_own = ib->brx_ring[i].rmd1_bits & LE_R1_OWN; + if (i == lp->rx_new) + buf[i] = r1_own ? '_' : 'X'; + else + buf[i] = r1_own ? '.' : '1'; + } + buf[RX_RING_SIZE] = 0; + + pr_debug("RxRing TestHits: [%s]\n", buf); +#endif + + ll->rdp = LE_C0_RINT | LE_C0_INEA; + for (rd = &ib->brx_ring[lp->rx_new]; + !((bits = rd->rmd1_bits) & LE_R1_OWN); + rd = &ib->brx_ring[lp->rx_new]) { + + /* We got an incomplete frame? */ + if ((bits & LE_R1_POK) != LE_R1_POK) { + dev->stats.rx_over_errors++; + dev->stats.rx_errors++; + continue; + } else if (bits & LE_R1_ERR) { + /* Count only the end frame as a rx error, + * not the beginning + */ + if (bits & LE_R1_BUF) + dev->stats.rx_fifo_errors++; + if (bits & LE_R1_CRC) + dev->stats.rx_crc_errors++; + if (bits & LE_R1_OFL) + dev->stats.rx_over_errors++; + if (bits & LE_R1_FRA) + dev->stats.rx_frame_errors++; + if (bits & LE_R1_EOP) + dev->stats.rx_errors++; + } else { + int len = (rd->mblength & 0xfff) - 4; + struct sk_buff *skb = dev_alloc_skb(len + 2); + + if (!skb) { + netdev_warn(dev, "Memory squeeze, deferring packet\n"); + dev->stats.rx_dropped++; + rd->mblength = 0; + rd->rmd1_bits = LE_R1_OWN; + lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; + return 0; + } + + skb_reserve(skb, 2); /* 16 byte align */ + skb_put(skb, len); /* make room */ + skb_copy_to_linear_data(skb, + (unsigned char *)&ib->rx_buf[lp->rx_new][0], + len); + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + dev->stats.rx_packets++; + dev->stats.rx_bytes += len; + } + + /* Return the packet to the pool */ + rd->mblength = 0; + rd->rmd1_bits = LE_R1_OWN; + lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; + } + return 0; +} + +static int lance_tx(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_init_block *ib = lp->init_block; + volatile struct lance_regs *ll = lp->ll; + volatile struct lance_tx_desc *td; + int i, j; + int status; + + /* csr0 is 2f3 */ + ll->rdp = LE_C0_TINT | LE_C0_INEA; + /* csr0 is 73 */ + + j = lp->tx_old; + for (i = j; i != lp->tx_new; i = j) { + td = &ib->btx_ring[i]; + + /* If we hit a packet not owned by us, stop */ + if (td->tmd1_bits & LE_T1_OWN) + break; + + if (td->tmd1_bits & LE_T1_ERR) { + status = td->misc; + + dev->stats.tx_errors++; + if (status & LE_T3_RTY) + dev->stats.tx_aborted_errors++; + if (status & LE_T3_LCOL) + dev->stats.tx_window_errors++; + + if (status & LE_T3_CLOS) { + dev->stats.tx_carrier_errors++; + if (lp->auto_select) { + lp->tpe = 1 - lp->tpe; + netdev_err(dev, "Carrier Lost, trying %s\n", + lp->tpe ? "TPE" : "AUI"); + /* Stop the lance */ + ll->rap = LE_CSR0; + ll->rdp = LE_C0_STOP; + lance_init_ring(dev); + load_csrs(lp); + init_restart_lance(lp); + return 0; + } + } + + /* buffer errors and underflows turn off + * the transmitter, so restart the adapter + */ + if (status & (LE_T3_BUF | LE_T3_UFL)) { + dev->stats.tx_fifo_errors++; + + netdev_err(dev, "Tx: ERR_BUF|ERR_UFL, restarting\n"); + /* Stop the lance */ + ll->rap = LE_CSR0; + ll->rdp = LE_C0_STOP; + lance_init_ring(dev); + load_csrs(lp); + init_restart_lance(lp); + return 0; + } + } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) { + /* So we don't count the packet more than once. */ + td->tmd1_bits &= ~(LE_T1_POK); + + /* One collision before packet was sent. */ + if (td->tmd1_bits & LE_T1_EONE) + dev->stats.collisions++; + + /* More than one collision, be optimistic. */ + if (td->tmd1_bits & LE_T1_EMORE) + dev->stats.collisions += 2; + + dev->stats.tx_packets++; + } + + j = (j + 1) & lp->tx_ring_mod_mask; + } + lp->tx_old = j; + ll->rdp = LE_C0_TINT | LE_C0_INEA; + return 0; +} + +static int lance_tx_buffs_avail(struct lance_private *lp) +{ + if (lp->tx_old <= lp->tx_new) + return lp->tx_old + lp->tx_ring_mod_mask - lp->tx_new; + return lp->tx_old - lp->tx_new - 1; +} + +static irqreturn_t lance_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + int csr0; + + ll->rap = LE_CSR0; /* LANCE Controller Status */ + csr0 = ll->rdp; + + if (!(csr0 & LE_C0_INTR)) /* Check if any interrupt has */ + return IRQ_NONE; /* been generated by the Lance. */ + + /* Acknowledge all the interrupt sources ASAP */ + ll->rdp = csr0 & ~(LE_C0_INEA | LE_C0_TDMD | LE_C0_STOP | LE_C0_STRT | + LE_C0_INIT); + + if (csr0 & LE_C0_ERR) { + /* Clear the error condition */ + ll->rdp = LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | LE_C0_INEA; + } + + if (csr0 & LE_C0_RINT) + lance_rx(dev); + + if (csr0 & LE_C0_TINT) + lance_tx(dev); + + /* Log misc errors. */ + if (csr0 & LE_C0_BABL) + dev->stats.tx_errors++; /* Tx babble. */ + if (csr0 & LE_C0_MISS) + dev->stats.rx_errors++; /* Missed a Rx frame. */ + if (csr0 & LE_C0_MERR) { + netdev_err(dev, "Bus master arbitration failure, status %04x\n", + csr0); + /* Restart the chip. */ + ll->rdp = LE_C0_STRT; + } + + if (netif_queue_stopped(dev) && lance_tx_buffs_avail(lp) > 0) + netif_wake_queue(dev); + + ll->rap = LE_CSR0; + ll->rdp = (LE_C0_BABL | LE_C0_CERR | LE_C0_MISS | LE_C0_MERR | + LE_C0_IDON | LE_C0_INEA); + return IRQ_HANDLED; +} + +static int lance_open(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + int ret; + + /* Stop the Lance */ + ll->rap = LE_CSR0; + ll->rdp = LE_C0_STOP; + + /* Install the Interrupt handler */ + ret = request_irq(IRQ_AMIGA_PORTS, lance_interrupt, IRQF_SHARED, + dev->name, dev); + if (ret) + return ret; + + load_csrs(lp); + lance_init_ring(dev); + + netif_start_queue(dev); + + return init_restart_lance(lp); +} + +static int lance_close(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + + netif_stop_queue(dev); + del_timer_sync(&lp->multicast_timer); + + /* Stop the card */ + ll->rap = LE_CSR0; + ll->rdp = LE_C0_STOP; + + free_irq(IRQ_AMIGA_PORTS, dev); + return 0; +} + +static inline int lance_reset(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + int status; + + /* Stop the lance */ + ll->rap = LE_CSR0; + ll->rdp = LE_C0_STOP; + + load_csrs(lp); + + lance_init_ring(dev); + dev->trans_start = jiffies; /* prevent tx timeout */ + netif_start_queue(dev); + + status = init_restart_lance(lp); + netdev_dbg(dev, "Lance restart=%d\n", status); + + return status; +} + +static void lance_tx_timeout(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + + netdev_err(dev, "transmit timed out, status %04x, reset\n", ll->rdp); + lance_reset(dev); + netif_wake_queue(dev); +} + +static netdev_tx_t lance_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + volatile struct lance_init_block *ib = lp->init_block; + int entry, skblen; + int status = NETDEV_TX_OK; + unsigned long flags; + + if (skb_padto(skb, ETH_ZLEN)) + return NETDEV_TX_OK; + skblen = max_t(unsigned, skb->len, ETH_ZLEN); + + local_irq_save(flags); + + if (!lance_tx_buffs_avail(lp)) { + local_irq_restore(flags); + return NETDEV_TX_LOCKED; + } + +#ifdef DEBUG + /* dump the packet */ + print_hex_dump(KERN_DEBUG, "skb->data: ", DUMP_PREFIX_NONE, + 16, 1, skb->data, 64, true); +#endif + entry = lp->tx_new & lp->tx_ring_mod_mask; + ib->btx_ring[entry].length = (-skblen) | 0xf000; + ib->btx_ring[entry].misc = 0; + + skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen); + + /* Now, give the packet to the lance */ + ib->btx_ring[entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN); + lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask; + dev->stats.tx_bytes += skblen; + + if (lance_tx_buffs_avail(lp) <= 0) + netif_stop_queue(dev); + + /* Kick the lance: transmit now */ + ll->rdp = LE_C0_INEA | LE_C0_TDMD; + dev_kfree_skb(skb); + + local_irq_restore(flags); + + return status; +} + +/* taken from the depca driver */ +static void lance_load_multicast(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_init_block *ib = lp->init_block; + volatile u16 *mcast_table = (u16 *)&ib->filter; + struct netdev_hw_addr *ha; + u32 crc; + + /* set all multicast bits */ + if (dev->flags & IFF_ALLMULTI) { + ib->filter[0] = 0xffffffff; + ib->filter[1] = 0xffffffff; + return; + } + /* clear the multicast filter */ + ib->filter[0] = 0; + ib->filter[1] = 0; + + /* Add addresses */ + netdev_for_each_mc_addr(ha, dev) { + crc = ether_crc_le(6, ha->addr); + crc = crc >> 26; + mcast_table[crc >> 4] |= 1 << (crc & 0xf); + } +} + +static void lance_set_multicast(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_init_block *ib = lp->init_block; + volatile struct lance_regs *ll = lp->ll; + + if (!netif_running(dev)) + return; + + if (lp->tx_old != lp->tx_new) { + mod_timer(&lp->multicast_timer, jiffies + 4); + netif_wake_queue(dev); + return; + } + + netif_stop_queue(dev); + + ll->rap = LE_CSR0; + ll->rdp = LE_C0_STOP; + lance_init_ring(dev); + + if (dev->flags & IFF_PROMISC) { + ib->mode |= LE_MO_PROM; + } else { + ib->mode &= ~LE_MO_PROM; + lance_load_multicast(dev); + } + load_csrs(lp); + init_restart_lance(lp); + netif_wake_queue(dev); +} + +static int __devinit a2065_init_one(struct zorro_dev *z, + const struct zorro_device_id *ent); +static void __devexit a2065_remove_one(struct zorro_dev *z); + + +static struct zorro_device_id a2065_zorro_tbl[] __devinitdata = { + { ZORRO_PROD_CBM_A2065_1 }, + { ZORRO_PROD_CBM_A2065_2 }, + { ZORRO_PROD_AMERISTAR_A2065 }, + { 0 } +}; +MODULE_DEVICE_TABLE(zorro, a2065_zorro_tbl); + +static struct zorro_driver a2065_driver = { + .name = "a2065", + .id_table = a2065_zorro_tbl, + .probe = a2065_init_one, + .remove = __devexit_p(a2065_remove_one), +}; + +static const struct net_device_ops lance_netdev_ops = { + .ndo_open = lance_open, + .ndo_stop = lance_close, + .ndo_start_xmit = lance_start_xmit, + .ndo_tx_timeout = lance_tx_timeout, + .ndo_set_rx_mode = lance_set_multicast, + .ndo_validate_addr = eth_validate_addr, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, +}; + +static int __devinit a2065_init_one(struct zorro_dev *z, + const struct zorro_device_id *ent) +{ + struct net_device *dev; + struct lance_private *priv; + unsigned long board = z->resource.start; + unsigned long base_addr = board + A2065_LANCE; + unsigned long mem_start = board + A2065_RAM; + struct resource *r1, *r2; + int err; + + r1 = request_mem_region(base_addr, sizeof(struct lance_regs), + "Am7990"); + if (!r1) + return -EBUSY; + r2 = request_mem_region(mem_start, A2065_RAM_SIZE, "RAM"); + if (!r2) { + release_mem_region(base_addr, sizeof(struct lance_regs)); + return -EBUSY; + } + + dev = alloc_etherdev(sizeof(struct lance_private)); + if (dev == NULL) { + release_mem_region(base_addr, sizeof(struct lance_regs)); + release_mem_region(mem_start, A2065_RAM_SIZE); + return -ENOMEM; + } + + priv = netdev_priv(dev); + + r1->name = dev->name; + r2->name = dev->name; + + dev->dev_addr[0] = 0x00; + if (z->id != ZORRO_PROD_AMERISTAR_A2065) { /* Commodore */ + dev->dev_addr[1] = 0x80; + dev->dev_addr[2] = 0x10; + } else { /* Ameristar */ + dev->dev_addr[1] = 0x00; + dev->dev_addr[2] = 0x9f; + } + dev->dev_addr[3] = (z->rom.er_SerialNumber >> 16) & 0xff; + dev->dev_addr[4] = (z->rom.er_SerialNumber >> 8) & 0xff; + dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff; + dev->base_addr = ZTWO_VADDR(base_addr); + dev->mem_start = ZTWO_VADDR(mem_start); + dev->mem_end = dev->mem_start + A2065_RAM_SIZE; + + priv->ll = (volatile struct lance_regs *)dev->base_addr; + priv->init_block = (struct lance_init_block *)dev->mem_start; + priv->lance_init_block = (struct lance_init_block *)A2065_RAM; + priv->auto_select = 0; + priv->busmaster_regval = LE_C3_BSWP; + + priv->lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS; + priv->lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS; + priv->rx_ring_mod_mask = RX_RING_MOD_MASK; + priv->tx_ring_mod_mask = TX_RING_MOD_MASK; + + dev->netdev_ops = &lance_netdev_ops; + dev->watchdog_timeo = 5*HZ; + dev->dma = 0; + + init_timer(&priv->multicast_timer); + priv->multicast_timer.data = (unsigned long) dev; + priv->multicast_timer.function = + (void (*)(unsigned long))lance_set_multicast; + + err = register_netdev(dev); + if (err) { + release_mem_region(base_addr, sizeof(struct lance_regs)); + release_mem_region(mem_start, A2065_RAM_SIZE); + free_netdev(dev); + return err; + } + zorro_set_drvdata(z, dev); + + netdev_info(dev, "A2065 at 0x%08lx, Ethernet Address %pM\n", + board, dev->dev_addr); + + return 0; +} + + +static void __devexit a2065_remove_one(struct zorro_dev *z) +{ + struct net_device *dev = zorro_get_drvdata(z); + + unregister_netdev(dev); + release_mem_region(ZTWO_PADDR(dev->base_addr), + sizeof(struct lance_regs)); + release_mem_region(ZTWO_PADDR(dev->mem_start), A2065_RAM_SIZE); + free_netdev(dev); +} + +static int __init a2065_init_module(void) +{ + return zorro_register_driver(&a2065_driver); +} + +static void __exit a2065_cleanup_module(void) +{ + zorro_unregister_driver(&a2065_driver); +} + +module_init(a2065_init_module); +module_exit(a2065_cleanup_module); + +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ethernet/amd/a2065.h b/drivers/net/ethernet/amd/a2065.h new file mode 100644 index 000000000000..5117759d4e9c --- /dev/null +++ b/drivers/net/ethernet/amd/a2065.h @@ -0,0 +1,173 @@ +/* + * Amiga Linux/68k A2065 Ethernet Driver + * + * (C) Copyright 1995 by Geert Uytterhoeven <geert@linux-m68k.org> + * + * --------------------------------------------------------------------------- + * + * This program is based on + * + * ariadne.?: Amiga Linux/68k Ariadne Ethernet Driver + * (C) Copyright 1995 by Geert Uytterhoeven, + * Peter De Schrijver + * + * lance.c: An AMD LANCE ethernet driver for linux. + * Written 1993-94 by Donald Becker. + * + * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller + * Advanced Micro Devices + * Publication #16907, Rev. B, Amendment/0, May 1994 + * + * --------------------------------------------------------------------------- + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of the Linux + * distribution for more details. + * + * --------------------------------------------------------------------------- + * + * The A2065 is a Zorro-II board made by Commodore/Ameristar. It contains: + * + * - an Am7990 Local Area Network Controller for Ethernet (LANCE) with + * both 10BASE-2 (thin coax) and AUI (DB-15) connectors + */ + + +/* + * Am7990 Local Area Network Controller for Ethernet (LANCE) + */ + +struct lance_regs { + unsigned short rdp; /* Register Data Port */ + unsigned short rap; /* Register Address Port */ +}; + + +/* + * Am7990 Control and Status Registers + */ + +#define LE_CSR0 0x0000 /* LANCE Controller Status */ +#define LE_CSR1 0x0001 /* IADR[15:0] */ +#define LE_CSR2 0x0002 /* IADR[23:16] */ +#define LE_CSR3 0x0003 /* Misc */ + + +/* + * Bit definitions for CSR0 (LANCE Controller Status) + */ + +#define LE_C0_ERR 0x8000 /* Error */ +#define LE_C0_BABL 0x4000 /* Babble: Transmitted too many bits */ +#define LE_C0_CERR 0x2000 /* No Heartbeat (10BASE-T) */ +#define LE_C0_MISS 0x1000 /* Missed Frame */ +#define LE_C0_MERR 0x0800 /* Memory Error */ +#define LE_C0_RINT 0x0400 /* Receive Interrupt */ +#define LE_C0_TINT 0x0200 /* Transmit Interrupt */ +#define LE_C0_IDON 0x0100 /* Initialization Done */ +#define LE_C0_INTR 0x0080 /* Interrupt Flag */ +#define LE_C0_INEA 0x0040 /* Interrupt Enable */ +#define LE_C0_RXON 0x0020 /* Receive On */ +#define LE_C0_TXON 0x0010 /* Transmit On */ +#define LE_C0_TDMD 0x0008 /* Transmit Demand */ +#define LE_C0_STOP 0x0004 /* Stop */ +#define LE_C0_STRT 0x0002 /* Start */ +#define LE_C0_INIT 0x0001 /* Initialize */ + + +/* + * Bit definitions for CSR3 + */ + +#define LE_C3_BSWP 0x0004 /* Byte Swap + (on for big endian byte order) */ +#define LE_C3_ACON 0x0002 /* ALE Control + (on for active low ALE) */ +#define LE_C3_BCON 0x0001 /* Byte Control */ + + +/* + * Mode Flags + */ + +#define LE_MO_PROM 0x8000 /* Promiscuous Mode */ +#define LE_MO_INTL 0x0040 /* Internal Loopback */ +#define LE_MO_DRTY 0x0020 /* Disable Retry */ +#define LE_MO_FCOLL 0x0010 /* Force Collision */ +#define LE_MO_DXMTFCS 0x0008 /* Disable Transmit CRC */ +#define LE_MO_LOOP 0x0004 /* Loopback Enable */ +#define LE_MO_DTX 0x0002 /* Disable Transmitter */ +#define LE_MO_DRX 0x0001 /* Disable Receiver */ + + +struct lance_rx_desc { + unsigned short rmd0; /* low address of packet */ + unsigned char rmd1_bits; /* descriptor bits */ + unsigned char rmd1_hadr; /* high address of packet */ + short length; /* This length is 2s complement (negative)! + * Buffer length + */ + unsigned short mblength; /* Aactual number of bytes received */ +}; + +struct lance_tx_desc { + unsigned short tmd0; /* low address of packet */ + unsigned char tmd1_bits; /* descriptor bits */ + unsigned char tmd1_hadr; /* high address of packet */ + short length; /* Length is 2s complement (negative)! */ + unsigned short misc; +}; + + +/* + * Receive Flags + */ + +#define LE_R1_OWN 0x80 /* LANCE owns the descriptor */ +#define LE_R1_ERR 0x40 /* Error */ +#define LE_R1_FRA 0x20 /* Framing Error */ +#define LE_R1_OFL 0x10 /* Overflow Error */ +#define LE_R1_CRC 0x08 /* CRC Error */ +#define LE_R1_BUF 0x04 /* Buffer Error */ +#define LE_R1_SOP 0x02 /* Start of Packet */ +#define LE_R1_EOP 0x01 /* End of Packet */ +#define LE_R1_POK 0x03 /* Packet is complete: SOP + EOP */ + + +/* + * Transmit Flags + */ + +#define LE_T1_OWN 0x80 /* LANCE owns the descriptor */ +#define LE_T1_ERR 0x40 /* Error */ +#define LE_T1_RES 0x20 /* Reserved, + LANCE writes this with a zero */ +#define LE_T1_EMORE 0x10 /* More than one retry needed */ +#define LE_T1_EONE 0x08 /* One retry needed */ +#define LE_T1_EDEF 0x04 /* Deferred */ +#define LE_T1_SOP 0x02 /* Start of Packet */ +#define LE_T1_EOP 0x01 /* End of Packet */ +#define LE_T1_POK 0x03 /* Packet is complete: SOP + EOP */ + + +/* + * Error Flags + */ + +#define LE_T3_BUF 0x8000 /* Buffer Error */ +#define LE_T3_UFL 0x4000 /* Underflow Error */ +#define LE_T3_LCOL 0x1000 /* Late Collision */ +#define LE_T3_CLOS 0x0800 /* Loss of Carrier */ +#define LE_T3_RTY 0x0400 /* Retry Error */ +#define LE_T3_TDR 0x03ff /* Time Domain Reflectometry */ + + +/* + * A2065 Expansion Board Structure + */ + +#define A2065_LANCE 0x4000 + +#define A2065_RAM 0x8000 +#define A2065_RAM_SIZE 0x8000 + diff --git a/drivers/net/ethernet/amd/am79c961a.c b/drivers/net/ethernet/amd/am79c961a.c new file mode 100644 index 000000000000..7d5ded80d2d7 --- /dev/null +++ b/drivers/net/ethernet/amd/am79c961a.c @@ -0,0 +1,770 @@ +/* + * linux/drivers/net/am79c961.c + * + * by Russell King <rmk@arm.linux.org.uk> 1995-2001. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Derived from various things including skeleton.c + * + * This is a special driver for the am79c961A Lance chip used in the + * Intel (formally Digital Equipment Corp) EBSA110 platform. Please + * note that this can not be built as a module (it doesn't make sense). + */ +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/crc32.h> +#include <linux/bitops.h> +#include <linux/platform_device.h> +#include <linux/io.h> + +#include <mach/hardware.h> +#include <asm/system.h> + +#define TX_BUFFERS 15 +#define RX_BUFFERS 25 + +#include "am79c961a.h" + +static irqreturn_t +am79c961_interrupt (int irq, void *dev_id); + +static unsigned int net_debug = NET_DEBUG; + +static const char version[] = + "am79c961 ethernet driver (C) 1995-2001 Russell King v0.04\n"; + +/* --------------------------------------------------------------------------- */ + +#ifdef __arm__ +static void write_rreg(u_long base, u_int reg, u_int val) +{ + asm volatile( + "str%?h %1, [%2] @ NET_RAP\n\t" + "str%?h %0, [%2, #-4] @ NET_RDP" + : + : "r" (val), "r" (reg), "r" (ISAIO_BASE + 0x0464)); +} + +static inline unsigned short read_rreg(u_long base_addr, u_int reg) +{ + unsigned short v; + asm volatile( + "str%?h %1, [%2] @ NET_RAP\n\t" + "ldr%?h %0, [%2, #-4] @ NET_RDP" + : "=r" (v) + : "r" (reg), "r" (ISAIO_BASE + 0x0464)); + return v; +} + +static inline void write_ireg(u_long base, u_int reg, u_int val) +{ + asm volatile( + "str%?h %1, [%2] @ NET_RAP\n\t" + "str%?h %0, [%2, #8] @ NET_IDP" + : + : "r" (val), "r" (reg), "r" (ISAIO_BASE + 0x0464)); +} + +static inline unsigned short read_ireg(u_long base_addr, u_int reg) +{ + u_short v; + asm volatile( + "str%?h %1, [%2] @ NAT_RAP\n\t" + "ldr%?h %0, [%2, #8] @ NET_IDP\n\t" + : "=r" (v) + : "r" (reg), "r" (ISAIO_BASE + 0x0464)); + return v; +} + +#define am_writeword(dev,off,val) __raw_writew(val, ISAMEM_BASE + ((off) << 1)) +#define am_readword(dev,off) __raw_readw(ISAMEM_BASE + ((off) << 1)) + +static void +am_writebuffer(struct net_device *dev, u_int offset, unsigned char *buf, unsigned int length) +{ + offset = ISAMEM_BASE + (offset << 1); + length = (length + 1) & ~1; + if ((int)buf & 2) { + asm volatile("str%?h %2, [%0], #4" + : "=&r" (offset) : "0" (offset), "r" (buf[0] | (buf[1] << 8))); + buf += 2; + length -= 2; + } + while (length > 8) { + register unsigned int tmp asm("r2"), tmp2 asm("r3"); + asm volatile( + "ldm%?ia %0!, {%1, %2}" + : "+r" (buf), "=&r" (tmp), "=&r" (tmp2)); + length -= 8; + asm volatile( + "str%?h %1, [%0], #4\n\t" + "mov%? %1, %1, lsr #16\n\t" + "str%?h %1, [%0], #4\n\t" + "str%?h %2, [%0], #4\n\t" + "mov%? %2, %2, lsr #16\n\t" + "str%?h %2, [%0], #4" + : "+r" (offset), "=&r" (tmp), "=&r" (tmp2)); + } + while (length > 0) { + asm volatile("str%?h %2, [%0], #4" + : "=&r" (offset) : "0" (offset), "r" (buf[0] | (buf[1] << 8))); + buf += 2; + length -= 2; + } +} + +static void +am_readbuffer(struct net_device *dev, u_int offset, unsigned char *buf, unsigned int length) +{ + offset = ISAMEM_BASE + (offset << 1); + length = (length + 1) & ~1; + if ((int)buf & 2) { + unsigned int tmp; + asm volatile( + "ldr%?h %2, [%0], #4\n\t" + "str%?b %2, [%1], #1\n\t" + "mov%? %2, %2, lsr #8\n\t" + "str%?b %2, [%1], #1" + : "=&r" (offset), "=&r" (buf), "=r" (tmp): "0" (offset), "1" (buf)); + length -= 2; + } + while (length > 8) { + register unsigned int tmp asm("r2"), tmp2 asm("r3"), tmp3; + asm volatile( + "ldr%?h %2, [%0], #4\n\t" + "ldr%?h %4, [%0], #4\n\t" + "ldr%?h %3, [%0], #4\n\t" + "orr%? %2, %2, %4, lsl #16\n\t" + "ldr%?h %4, [%0], #4\n\t" + "orr%? %3, %3, %4, lsl #16\n\t" + "stm%?ia %1!, {%2, %3}" + : "=&r" (offset), "=&r" (buf), "=r" (tmp), "=r" (tmp2), "=r" (tmp3) + : "0" (offset), "1" (buf)); + length -= 8; + } + while (length > 0) { + unsigned int tmp; + asm volatile( + "ldr%?h %2, [%0], #4\n\t" + "str%?b %2, [%1], #1\n\t" + "mov%? %2, %2, lsr #8\n\t" + "str%?b %2, [%1], #1" + : "=&r" (offset), "=&r" (buf), "=r" (tmp) : "0" (offset), "1" (buf)); + length -= 2; + } +} +#else +#error Not compatible +#endif + +static int +am79c961_ramtest(struct net_device *dev, unsigned int val) +{ + unsigned char *buffer = kmalloc (65536, GFP_KERNEL); + int i, error = 0, errorcount = 0; + + if (!buffer) + return 0; + memset (buffer, val, 65536); + am_writebuffer(dev, 0, buffer, 65536); + memset (buffer, val ^ 255, 65536); + am_readbuffer(dev, 0, buffer, 65536); + for (i = 0; i < 65536; i++) { + if (buffer[i] != val && !error) { + printk ("%s: buffer error (%02X %02X) %05X - ", dev->name, val, buffer[i], i); + error = 1; + errorcount ++; + } else if (error && buffer[i] == val) { + printk ("%05X\n", i); + error = 0; + } + } + if (error) + printk ("10000\n"); + kfree (buffer); + return errorcount; +} + +static void am79c961_mc_hash(char *addr, u16 *hash) +{ + int idx, bit; + u32 crc; + + crc = ether_crc_le(ETH_ALEN, addr); + + idx = crc >> 30; + bit = (crc >> 26) & 15; + + hash[idx] |= 1 << bit; +} + +static unsigned int am79c961_get_rx_mode(struct net_device *dev, u16 *hash) +{ + unsigned int mode = MODE_PORT_10BT; + + if (dev->flags & IFF_PROMISC) { + mode |= MODE_PROMISC; + memset(hash, 0xff, 4 * sizeof(*hash)); + } else if (dev->flags & IFF_ALLMULTI) { + memset(hash, 0xff, 4 * sizeof(*hash)); + } else { + struct netdev_hw_addr *ha; + + memset(hash, 0, 4 * sizeof(*hash)); + + netdev_for_each_mc_addr(ha, dev) + am79c961_mc_hash(ha->addr, hash); + } + + return mode; +} + +static void +am79c961_init_for_open(struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + unsigned long flags; + unsigned char *p; + u_int hdr_addr, first_free_addr; + u16 multi_hash[4], mode = am79c961_get_rx_mode(dev, multi_hash); + int i; + + /* + * Stop the chip. + */ + spin_lock_irqsave(&priv->chip_lock, flags); + write_rreg (dev->base_addr, CSR0, CSR0_BABL|CSR0_CERR|CSR0_MISS|CSR0_MERR|CSR0_TINT|CSR0_RINT|CSR0_STOP); + spin_unlock_irqrestore(&priv->chip_lock, flags); + + write_ireg (dev->base_addr, 5, 0x00a0); /* Receive address LED */ + write_ireg (dev->base_addr, 6, 0x0081); /* Collision LED */ + write_ireg (dev->base_addr, 7, 0x0090); /* XMIT LED */ + write_ireg (dev->base_addr, 2, 0x0000); /* MODE register selects media */ + + for (i = LADRL; i <= LADRH; i++) + write_rreg (dev->base_addr, i, multi_hash[i - LADRL]); + + for (i = PADRL, p = dev->dev_addr; i <= PADRH; i++, p += 2) + write_rreg (dev->base_addr, i, p[0] | (p[1] << 8)); + + write_rreg (dev->base_addr, MODE, mode); + write_rreg (dev->base_addr, POLLINT, 0); + write_rreg (dev->base_addr, SIZERXR, -RX_BUFFERS); + write_rreg (dev->base_addr, SIZETXR, -TX_BUFFERS); + + first_free_addr = RX_BUFFERS * 8 + TX_BUFFERS * 8 + 16; + hdr_addr = 0; + + priv->rxhead = 0; + priv->rxtail = 0; + priv->rxhdr = hdr_addr; + + for (i = 0; i < RX_BUFFERS; i++) { + priv->rxbuffer[i] = first_free_addr; + am_writeword (dev, hdr_addr, first_free_addr); + am_writeword (dev, hdr_addr + 2, RMD_OWN); + am_writeword (dev, hdr_addr + 4, (-1600)); + am_writeword (dev, hdr_addr + 6, 0); + first_free_addr += 1600; + hdr_addr += 8; + } + priv->txhead = 0; + priv->txtail = 0; + priv->txhdr = hdr_addr; + for (i = 0; i < TX_BUFFERS; i++) { + priv->txbuffer[i] = first_free_addr; + am_writeword (dev, hdr_addr, first_free_addr); + am_writeword (dev, hdr_addr + 2, TMD_STP|TMD_ENP); + am_writeword (dev, hdr_addr + 4, 0xf000); + am_writeword (dev, hdr_addr + 6, 0); + first_free_addr += 1600; + hdr_addr += 8; + } + + write_rreg (dev->base_addr, BASERXL, priv->rxhdr); + write_rreg (dev->base_addr, BASERXH, 0); + write_rreg (dev->base_addr, BASETXL, priv->txhdr); + write_rreg (dev->base_addr, BASERXH, 0); + write_rreg (dev->base_addr, CSR0, CSR0_STOP); + write_rreg (dev->base_addr, CSR3, CSR3_IDONM|CSR3_BABLM|CSR3_DXSUFLO); + write_rreg (dev->base_addr, CSR4, CSR4_APAD_XMIT|CSR4_MFCOM|CSR4_RCVCCOM|CSR4_TXSTRTM|CSR4_JABM); + write_rreg (dev->base_addr, CSR0, CSR0_IENA|CSR0_STRT); +} + +static void am79c961_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct dev_priv *priv = netdev_priv(dev); + unsigned int lnkstat, carrier; + unsigned long flags; + + spin_lock_irqsave(&priv->chip_lock, flags); + lnkstat = read_ireg(dev->base_addr, ISALED0) & ISALED0_LNKST; + spin_unlock_irqrestore(&priv->chip_lock, flags); + carrier = netif_carrier_ok(dev); + + if (lnkstat && !carrier) { + netif_carrier_on(dev); + printk("%s: link up\n", dev->name); + } else if (!lnkstat && carrier) { + netif_carrier_off(dev); + printk("%s: link down\n", dev->name); + } + + mod_timer(&priv->timer, jiffies + msecs_to_jiffies(500)); +} + +/* + * Open/initialize the board. + */ +static int +am79c961_open(struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + int ret; + + ret = request_irq(dev->irq, am79c961_interrupt, 0, dev->name, dev); + if (ret) + return ret; + + am79c961_init_for_open(dev); + + netif_carrier_off(dev); + + priv->timer.expires = jiffies; + add_timer(&priv->timer); + + netif_start_queue(dev); + + return 0; +} + +/* + * The inverse routine to am79c961_open(). + */ +static int +am79c961_close(struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + unsigned long flags; + + del_timer_sync(&priv->timer); + + netif_stop_queue(dev); + netif_carrier_off(dev); + + spin_lock_irqsave(&priv->chip_lock, flags); + write_rreg (dev->base_addr, CSR0, CSR0_STOP); + write_rreg (dev->base_addr, CSR3, CSR3_MASKALL); + spin_unlock_irqrestore(&priv->chip_lock, flags); + + free_irq (dev->irq, dev); + + return 0; +} + +/* + * Set or clear promiscuous/multicast mode filter for this adapter. + */ +static void am79c961_setmulticastlist (struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + unsigned long flags; + u16 multi_hash[4], mode = am79c961_get_rx_mode(dev, multi_hash); + int i, stopped; + + spin_lock_irqsave(&priv->chip_lock, flags); + + stopped = read_rreg(dev->base_addr, CSR0) & CSR0_STOP; + + if (!stopped) { + /* + * Put the chip into suspend mode + */ + write_rreg(dev->base_addr, CTRL1, CTRL1_SPND); + + /* + * Spin waiting for chip to report suspend mode + */ + while ((read_rreg(dev->base_addr, CTRL1) & CTRL1_SPND) == 0) { + spin_unlock_irqrestore(&priv->chip_lock, flags); + nop(); + spin_lock_irqsave(&priv->chip_lock, flags); + } + } + + /* + * Update the multicast hash table + */ + for (i = 0; i < ARRAY_SIZE(multi_hash); i++) + write_rreg(dev->base_addr, i + LADRL, multi_hash[i]); + + /* + * Write the mode register + */ + write_rreg(dev->base_addr, MODE, mode); + + if (!stopped) { + /* + * Put the chip back into running mode + */ + write_rreg(dev->base_addr, CTRL1, 0); + } + + spin_unlock_irqrestore(&priv->chip_lock, flags); +} + +static void am79c961_timeout(struct net_device *dev) +{ + printk(KERN_WARNING "%s: transmit timed out, network cable problem?\n", + dev->name); + + /* + * ought to do some setup of the tx side here + */ + + netif_wake_queue(dev); +} + +/* + * Transmit a packet + */ +static int +am79c961_sendpacket(struct sk_buff *skb, struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + unsigned int hdraddr, bufaddr; + unsigned int head; + unsigned long flags; + + head = priv->txhead; + hdraddr = priv->txhdr + (head << 3); + bufaddr = priv->txbuffer[head]; + head += 1; + if (head >= TX_BUFFERS) + head = 0; + + am_writebuffer (dev, bufaddr, skb->data, skb->len); + am_writeword (dev, hdraddr + 4, -skb->len); + am_writeword (dev, hdraddr + 2, TMD_OWN|TMD_STP|TMD_ENP); + priv->txhead = head; + + spin_lock_irqsave(&priv->chip_lock, flags); + write_rreg (dev->base_addr, CSR0, CSR0_TDMD|CSR0_IENA); + spin_unlock_irqrestore(&priv->chip_lock, flags); + + /* + * If the next packet is owned by the ethernet device, + * then the tx ring is full and we can't add another + * packet. + */ + if (am_readword(dev, priv->txhdr + (priv->txhead << 3) + 2) & TMD_OWN) + netif_stop_queue(dev); + + dev_kfree_skb(skb); + + return NETDEV_TX_OK; +} + +/* + * If we have a good packet(s), get it/them out of the buffers. + */ +static void +am79c961_rx(struct net_device *dev, struct dev_priv *priv) +{ + do { + struct sk_buff *skb; + u_int hdraddr; + u_int pktaddr; + u_int status; + int len; + + hdraddr = priv->rxhdr + (priv->rxtail << 3); + pktaddr = priv->rxbuffer[priv->rxtail]; + + status = am_readword (dev, hdraddr + 2); + if (status & RMD_OWN) /* do we own it? */ + break; + + priv->rxtail ++; + if (priv->rxtail >= RX_BUFFERS) + priv->rxtail = 0; + + if ((status & (RMD_ERR|RMD_STP|RMD_ENP)) != (RMD_STP|RMD_ENP)) { + am_writeword (dev, hdraddr + 2, RMD_OWN); + dev->stats.rx_errors++; + if (status & RMD_ERR) { + if (status & RMD_FRAM) + dev->stats.rx_frame_errors++; + if (status & RMD_CRC) + dev->stats.rx_crc_errors++; + } else if (status & RMD_STP) + dev->stats.rx_length_errors++; + continue; + } + + len = am_readword(dev, hdraddr + 6); + skb = dev_alloc_skb(len + 2); + + if (skb) { + skb_reserve(skb, 2); + + am_readbuffer(dev, pktaddr, skb_put(skb, len), len); + am_writeword(dev, hdraddr + 2, RMD_OWN); + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + dev->stats.rx_bytes += len; + dev->stats.rx_packets++; + } else { + am_writeword (dev, hdraddr + 2, RMD_OWN); + printk (KERN_WARNING "%s: memory squeeze, dropping packet.\n", dev->name); + dev->stats.rx_dropped++; + break; + } + } while (1); +} + +/* + * Update stats for the transmitted packet + */ +static void +am79c961_tx(struct net_device *dev, struct dev_priv *priv) +{ + do { + short len; + u_int hdraddr; + u_int status; + + hdraddr = priv->txhdr + (priv->txtail << 3); + status = am_readword (dev, hdraddr + 2); + if (status & TMD_OWN) + break; + + priv->txtail ++; + if (priv->txtail >= TX_BUFFERS) + priv->txtail = 0; + + if (status & TMD_ERR) { + u_int status2; + + dev->stats.tx_errors++; + + status2 = am_readword (dev, hdraddr + 6); + + /* + * Clear the error byte + */ + am_writeword (dev, hdraddr + 6, 0); + + if (status2 & TST_RTRY) + dev->stats.collisions += 16; + if (status2 & TST_LCOL) + dev->stats.tx_window_errors++; + if (status2 & TST_LCAR) + dev->stats.tx_carrier_errors++; + if (status2 & TST_UFLO) + dev->stats.tx_fifo_errors++; + continue; + } + dev->stats.tx_packets++; + len = am_readword (dev, hdraddr + 4); + dev->stats.tx_bytes += -len; + } while (priv->txtail != priv->txhead); + + netif_wake_queue(dev); +} + +static irqreturn_t +am79c961_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = (struct net_device *)dev_id; + struct dev_priv *priv = netdev_priv(dev); + u_int status, n = 100; + int handled = 0; + + do { + status = read_rreg(dev->base_addr, CSR0); + write_rreg(dev->base_addr, CSR0, status & + (CSR0_IENA|CSR0_TINT|CSR0_RINT| + CSR0_MERR|CSR0_MISS|CSR0_CERR|CSR0_BABL)); + + if (status & CSR0_RINT) { + handled = 1; + am79c961_rx(dev, priv); + } + if (status & CSR0_TINT) { + handled = 1; + am79c961_tx(dev, priv); + } + if (status & CSR0_MISS) { + handled = 1; + dev->stats.rx_dropped++; + } + if (status & CSR0_CERR) { + handled = 1; + mod_timer(&priv->timer, jiffies); + } + } while (--n && status & (CSR0_RINT | CSR0_TINT)); + + return IRQ_RETVAL(handled); +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void am79c961_poll_controller(struct net_device *dev) +{ + unsigned long flags; + local_irq_save(flags); + am79c961_interrupt(dev->irq, dev); + local_irq_restore(flags); +} +#endif + +/* + * Initialise the chip. Note that we always expect + * to be entered with interrupts enabled. + */ +static int +am79c961_hw_init(struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + + spin_lock_irq(&priv->chip_lock); + write_rreg (dev->base_addr, CSR0, CSR0_STOP); + write_rreg (dev->base_addr, CSR3, CSR3_MASKALL); + spin_unlock_irq(&priv->chip_lock); + + am79c961_ramtest(dev, 0x66); + am79c961_ramtest(dev, 0x99); + + return 0; +} + +static void __init am79c961_banner(void) +{ + static unsigned version_printed; + + if (net_debug && version_printed++ == 0) + printk(KERN_INFO "%s", version); +} +static const struct net_device_ops am79c961_netdev_ops = { + .ndo_open = am79c961_open, + .ndo_stop = am79c961_close, + .ndo_start_xmit = am79c961_sendpacket, + .ndo_set_rx_mode = am79c961_setmulticastlist, + .ndo_tx_timeout = am79c961_timeout, + .ndo_validate_addr = eth_validate_addr, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = am79c961_poll_controller, +#endif +}; + +static int __devinit am79c961_probe(struct platform_device *pdev) +{ + struct resource *res; + struct net_device *dev; + struct dev_priv *priv; + int i, ret; + + res = platform_get_resource(pdev, IORESOURCE_IO, 0); + if (!res) + return -ENODEV; + + dev = alloc_etherdev(sizeof(struct dev_priv)); + ret = -ENOMEM; + if (!dev) + goto out; + + SET_NETDEV_DEV(dev, &pdev->dev); + + priv = netdev_priv(dev); + + /* + * Fixed address and IRQ lines here. + * The PNP initialisation should have been + * done by the ether bootp loader. + */ + dev->base_addr = res->start; + ret = platform_get_irq(pdev, 0); + + if (ret < 0) { + ret = -ENODEV; + goto nodev; + } + dev->irq = ret; + + ret = -ENODEV; + if (!request_region(dev->base_addr, 0x18, dev->name)) + goto nodev; + + /* + * Reset the device. + */ + inb(dev->base_addr + NET_RESET); + udelay(5); + + /* + * Check the manufacturer part of the + * ether address. + */ + if (inb(dev->base_addr) != 0x08 || + inb(dev->base_addr + 2) != 0x00 || + inb(dev->base_addr + 4) != 0x2b) + goto release; + + for (i = 0; i < 6; i++) + dev->dev_addr[i] = inb(dev->base_addr + i * 2) & 0xff; + + am79c961_banner(); + + spin_lock_init(&priv->chip_lock); + init_timer(&priv->timer); + priv->timer.data = (unsigned long)dev; + priv->timer.function = am79c961_timer; + + if (am79c961_hw_init(dev)) + goto release; + + dev->netdev_ops = &am79c961_netdev_ops; + + ret = register_netdev(dev); + if (ret == 0) { + printk(KERN_INFO "%s: ether address %pM\n", + dev->name, dev->dev_addr); + return 0; + } + +release: + release_region(dev->base_addr, 0x18); +nodev: + free_netdev(dev); +out: + return ret; +} + +static struct platform_driver am79c961_driver = { + .probe = am79c961_probe, + .driver = { + .name = "am79c961", + }, +}; + +static int __init am79c961_init(void) +{ + return platform_driver_register(&am79c961_driver); +} + +__initcall(am79c961_init); diff --git a/drivers/net/ethernet/amd/am79c961a.h b/drivers/net/ethernet/amd/am79c961a.h new file mode 100644 index 000000000000..fd634d32756b --- /dev/null +++ b/drivers/net/ethernet/amd/am79c961a.h @@ -0,0 +1,145 @@ +/* + * linux/drivers/net/arm/am79c961a.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _LINUX_am79c961a_H +#define _LINUX_am79c961a_H + +/* use 0 for production, 1 for verification, >2 for debug. debug flags: */ +#define DEBUG_TX 2 +#define DEBUG_RX 4 +#define DEBUG_INT 8 +#define DEBUG_IC 16 +#ifndef NET_DEBUG +#define NET_DEBUG 0 +#endif + +#define NET_UID 0 +#define NET_RDP 0x10 +#define NET_RAP 0x12 +#define NET_RESET 0x14 +#define NET_IDP 0x16 + +/* + * RAP registers + */ +#define CSR0 0 +#define CSR0_INIT 0x0001 +#define CSR0_STRT 0x0002 +#define CSR0_STOP 0x0004 +#define CSR0_TDMD 0x0008 +#define CSR0_TXON 0x0010 +#define CSR0_RXON 0x0020 +#define CSR0_IENA 0x0040 +#define CSR0_INTR 0x0080 +#define CSR0_IDON 0x0100 +#define CSR0_TINT 0x0200 +#define CSR0_RINT 0x0400 +#define CSR0_MERR 0x0800 +#define CSR0_MISS 0x1000 +#define CSR0_CERR 0x2000 +#define CSR0_BABL 0x4000 +#define CSR0_ERR 0x8000 + +#define CSR3 3 +#define CSR3_EMBA 0x0008 +#define CSR3_DXMT2PD 0x0010 +#define CSR3_LAPPEN 0x0020 +#define CSR3_DXSUFLO 0x0040 +#define CSR3_IDONM 0x0100 +#define CSR3_TINTM 0x0200 +#define CSR3_RINTM 0x0400 +#define CSR3_MERRM 0x0800 +#define CSR3_MISSM 0x1000 +#define CSR3_BABLM 0x4000 +#define CSR3_MASKALL 0x5F00 + +#define CSR4 4 +#define CSR4_JABM 0x0001 +#define CSR4_JAB 0x0002 +#define CSR4_TXSTRTM 0x0004 +#define CSR4_TXSTRT 0x0008 +#define CSR4_RCVCCOM 0x0010 +#define CSR4_RCVCCO 0x0020 +#define CSR4_MFCOM 0x0100 +#define CSR4_MFCO 0x0200 +#define CSR4_ASTRP_RCV 0x0400 +#define CSR4_APAD_XMIT 0x0800 + +#define CTRL1 5 +#define CTRL1_SPND 0x0001 + +#define LADRL 8 +#define LADRM1 9 +#define LADRM2 10 +#define LADRH 11 +#define PADRL 12 +#define PADRM 13 +#define PADRH 14 + +#define MODE 15 +#define MODE_DISRX 0x0001 +#define MODE_DISTX 0x0002 +#define MODE_LOOP 0x0004 +#define MODE_DTCRC 0x0008 +#define MODE_COLL 0x0010 +#define MODE_DRETRY 0x0020 +#define MODE_INTLOOP 0x0040 +#define MODE_PORT_AUI 0x0000 +#define MODE_PORT_10BT 0x0080 +#define MODE_DRXPA 0x2000 +#define MODE_DRXBA 0x4000 +#define MODE_PROMISC 0x8000 + +#define BASERXL 24 +#define BASERXH 25 +#define BASETXL 30 +#define BASETXH 31 + +#define POLLINT 47 + +#define SIZERXR 76 +#define SIZETXR 78 + +#define CSR_MFC 112 + +#define RMD_ENP 0x0100 +#define RMD_STP 0x0200 +#define RMD_CRC 0x0800 +#define RMD_FRAM 0x2000 +#define RMD_ERR 0x4000 +#define RMD_OWN 0x8000 + +#define TMD_ENP 0x0100 +#define TMD_STP 0x0200 +#define TMD_MORE 0x1000 +#define TMD_ERR 0x4000 +#define TMD_OWN 0x8000 + +#define TST_RTRY 0x0400 +#define TST_LCAR 0x0800 +#define TST_LCOL 0x1000 +#define TST_UFLO 0x4000 +#define TST_BUFF 0x8000 + +#define ISALED0 0x0004 +#define ISALED0_LNKST 0x8000 + +struct dev_priv { + unsigned long rxbuffer[RX_BUFFERS]; + unsigned long txbuffer[TX_BUFFERS]; + unsigned char txhead; + unsigned char txtail; + unsigned char rxhead; + unsigned char rxtail; + unsigned long rxhdr; + unsigned long txhdr; + spinlock_t chip_lock; + struct timer_list timer; +}; + +#endif diff --git a/drivers/net/ethernet/amd/amd8111e.c b/drivers/net/ethernet/amd/amd8111e.c new file mode 100644 index 000000000000..a9745f4ddbfe --- /dev/null +++ b/drivers/net/ethernet/amd/amd8111e.c @@ -0,0 +1,1992 @@ + +/* Advanced Micro Devices Inc. AMD8111E Linux Network Driver + * Copyright (C) 2004 Advanced Micro Devices + * + * + * Copyright 2001,2002 Jeff Garzik <jgarzik@mandrakesoft.com> [ 8139cp.c,tg3.c ] + * Copyright (C) 2001, 2002 David S. Miller (davem@redhat.com)[ tg3.c] + * Copyright 1996-1999 Thomas Bogendoerfer [ pcnet32.c ] + * Derived from the lance driver written 1993,1994,1995 by Donald Becker. + * Copyright 1993 United States Government as represented by the + * Director, National Security Agency.[ pcnet32.c ] + * Carsten Langgaard, carstenl@mips.com [ pcnet32.c ] + * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + +Module Name: + + amd8111e.c + +Abstract: + + AMD8111 based 10/100 Ethernet Controller Driver. + +Environment: + + Kernel Mode + +Revision History: + 3.0.0 + Initial Revision. + 3.0.1 + 1. Dynamic interrupt coalescing. + 2. Removed prev_stats. + 3. MII support. + 4. Dynamic IPG support + 3.0.2 05/29/2003 + 1. Bug fix: Fixed failure to send jumbo packets larger than 4k. + 2. Bug fix: Fixed VLAN support failure. + 3. Bug fix: Fixed receive interrupt coalescing bug. + 4. Dynamic IPG support is disabled by default. + 3.0.3 06/05/2003 + 1. Bug fix: Fixed failure to close the interface if SMP is enabled. + 3.0.4 12/09/2003 + 1. Added set_mac_address routine for bonding driver support. + 2. Tested the driver for bonding support + 3. Bug fix: Fixed mismach in actual receive buffer lenth and lenth + indicated to the h/w. + 4. Modified amd8111e_rx() routine to receive all the received packets + in the first interrupt. + 5. Bug fix: Corrected rx_errors reported in get_stats() function. + 3.0.5 03/22/2004 + 1. Added NAPI support + +*/ + + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/compiler.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/ethtool.h> +#include <linux/mii.h> +#include <linux/if_vlan.h> +#include <linux/ctype.h> +#include <linux/crc32.h> +#include <linux/dma-mapping.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/byteorder.h> +#include <asm/uaccess.h> + +#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) +#define AMD8111E_VLAN_TAG_USED 1 +#else +#define AMD8111E_VLAN_TAG_USED 0 +#endif + +#include "amd8111e.h" +#define MODULE_NAME "amd8111e" +#define MODULE_VERS "3.0.7" +MODULE_AUTHOR("Advanced Micro Devices, Inc."); +MODULE_DESCRIPTION ("AMD8111 based 10/100 Ethernet Controller. Driver Version "MODULE_VERS); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(pci, amd8111e_pci_tbl); +module_param_array(speed_duplex, int, NULL, 0); +MODULE_PARM_DESC(speed_duplex, "Set device speed and duplex modes, 0: Auto Negotiate, 1: 10Mbps Half Duplex, 2: 10Mbps Full Duplex, 3: 100Mbps Half Duplex, 4: 100Mbps Full Duplex"); +module_param_array(coalesce, bool, NULL, 0); +MODULE_PARM_DESC(coalesce, "Enable or Disable interrupt coalescing, 1: Enable, 0: Disable"); +module_param_array(dynamic_ipg, bool, NULL, 0); +MODULE_PARM_DESC(dynamic_ipg, "Enable or Disable dynamic IPG, 1: Enable, 0: Disable"); + +static DEFINE_PCI_DEVICE_TABLE(amd8111e_pci_tbl) = { + + { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD8111E_7462, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, + { 0, } + +}; +/* +This function will read the PHY registers. +*/ +static int amd8111e_read_phy(struct amd8111e_priv* lp, int phy_id, int reg, u32* val) +{ + void __iomem *mmio = lp->mmio; + unsigned int reg_val; + unsigned int repeat= REPEAT_CNT; + + reg_val = readl(mmio + PHY_ACCESS); + while (reg_val & PHY_CMD_ACTIVE) + reg_val = readl( mmio + PHY_ACCESS ); + + writel( PHY_RD_CMD | ((phy_id & 0x1f) << 21) | + ((reg & 0x1f) << 16), mmio +PHY_ACCESS); + do{ + reg_val = readl(mmio + PHY_ACCESS); + udelay(30); /* It takes 30 us to read/write data */ + } while (--repeat && (reg_val & PHY_CMD_ACTIVE)); + if(reg_val & PHY_RD_ERR) + goto err_phy_read; + + *val = reg_val & 0xffff; + return 0; +err_phy_read: + *val = 0; + return -EINVAL; + +} + +/* +This function will write into PHY registers. +*/ +static int amd8111e_write_phy(struct amd8111e_priv* lp,int phy_id, int reg, u32 val) +{ + unsigned int repeat = REPEAT_CNT; + void __iomem *mmio = lp->mmio; + unsigned int reg_val; + + reg_val = readl(mmio + PHY_ACCESS); + while (reg_val & PHY_CMD_ACTIVE) + reg_val = readl( mmio + PHY_ACCESS ); + + writel( PHY_WR_CMD | ((phy_id & 0x1f) << 21) | + ((reg & 0x1f) << 16)|val, mmio + PHY_ACCESS); + + do{ + reg_val = readl(mmio + PHY_ACCESS); + udelay(30); /* It takes 30 us to read/write the data */ + } while (--repeat && (reg_val & PHY_CMD_ACTIVE)); + + if(reg_val & PHY_RD_ERR) + goto err_phy_write; + + return 0; + +err_phy_write: + return -EINVAL; + +} +/* +This is the mii register read function provided to the mii interface. +*/ +static int amd8111e_mdio_read(struct net_device * dev, int phy_id, int reg_num) +{ + struct amd8111e_priv* lp = netdev_priv(dev); + unsigned int reg_val; + + amd8111e_read_phy(lp,phy_id,reg_num,®_val); + return reg_val; + +} + +/* +This is the mii register write function provided to the mii interface. +*/ +static void amd8111e_mdio_write(struct net_device * dev, int phy_id, int reg_num, int val) +{ + struct amd8111e_priv* lp = netdev_priv(dev); + + amd8111e_write_phy(lp, phy_id, reg_num, val); +} + +/* +This function will set PHY speed. During initialization sets the original speed to 100 full. +*/ +static void amd8111e_set_ext_phy(struct net_device *dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + u32 bmcr,advert,tmp; + + /* Determine mii register values to set the speed */ + advert = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_ADVERTISE); + tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4); + switch (lp->ext_phy_option){ + + default: + case SPEED_AUTONEG: /* advertise all values */ + tmp |= ( ADVERTISE_10HALF|ADVERTISE_10FULL| + ADVERTISE_100HALF|ADVERTISE_100FULL) ; + break; + case SPEED10_HALF: + tmp |= ADVERTISE_10HALF; + break; + case SPEED10_FULL: + tmp |= ADVERTISE_10FULL; + break; + case SPEED100_HALF: + tmp |= ADVERTISE_100HALF; + break; + case SPEED100_FULL: + tmp |= ADVERTISE_100FULL; + break; + } + + if(advert != tmp) + amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_ADVERTISE, tmp); + /* Restart auto negotiation */ + bmcr = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_BMCR); + bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART); + amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_BMCR, bmcr); + +} + +/* +This function will unmap skb->data space and will free +all transmit and receive skbuffs. +*/ +static int amd8111e_free_skbs(struct net_device *dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + struct sk_buff* rx_skbuff; + int i; + + /* Freeing transmit skbs */ + for(i = 0; i < NUM_TX_BUFFERS; i++){ + if(lp->tx_skbuff[i]){ + pci_unmap_single(lp->pci_dev,lp->tx_dma_addr[i], lp->tx_skbuff[i]->len,PCI_DMA_TODEVICE); + dev_kfree_skb (lp->tx_skbuff[i]); + lp->tx_skbuff[i] = NULL; + lp->tx_dma_addr[i] = 0; + } + } + /* Freeing previously allocated receive buffers */ + for (i = 0; i < NUM_RX_BUFFERS; i++){ + rx_skbuff = lp->rx_skbuff[i]; + if(rx_skbuff != NULL){ + pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[i], + lp->rx_buff_len - 2,PCI_DMA_FROMDEVICE); + dev_kfree_skb(lp->rx_skbuff[i]); + lp->rx_skbuff[i] = NULL; + lp->rx_dma_addr[i] = 0; + } + } + + return 0; +} + +/* +This will set the receive buffer length corresponding to the mtu size of networkinterface. +*/ +static inline void amd8111e_set_rx_buff_len(struct net_device* dev) +{ + struct amd8111e_priv* lp = netdev_priv(dev); + unsigned int mtu = dev->mtu; + + if (mtu > ETH_DATA_LEN){ + /* MTU + ethernet header + FCS + + optional VLAN tag + skb reserve space 2 */ + + lp->rx_buff_len = mtu + ETH_HLEN + 10; + lp->options |= OPTION_JUMBO_ENABLE; + } else{ + lp->rx_buff_len = PKT_BUFF_SZ; + lp->options &= ~OPTION_JUMBO_ENABLE; + } +} + +/* +This function will free all the previously allocated buffers, determine new receive buffer length and will allocate new receive buffers. This function also allocates and initializes both the transmitter and receive hardware descriptors. + */ +static int amd8111e_init_ring(struct net_device *dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + int i; + + lp->rx_idx = lp->tx_idx = 0; + lp->tx_complete_idx = 0; + lp->tx_ring_idx = 0; + + + if(lp->opened) + /* Free previously allocated transmit and receive skbs */ + amd8111e_free_skbs(dev); + + else{ + /* allocate the tx and rx descriptors */ + if((lp->tx_ring = pci_alloc_consistent(lp->pci_dev, + sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR, + &lp->tx_ring_dma_addr)) == NULL) + + goto err_no_mem; + + if((lp->rx_ring = pci_alloc_consistent(lp->pci_dev, + sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR, + &lp->rx_ring_dma_addr)) == NULL) + + goto err_free_tx_ring; + + } + /* Set new receive buff size */ + amd8111e_set_rx_buff_len(dev); + + /* Allocating receive skbs */ + for (i = 0; i < NUM_RX_BUFFERS; i++) { + + if (!(lp->rx_skbuff[i] = dev_alloc_skb(lp->rx_buff_len))) { + /* Release previos allocated skbs */ + for(--i; i >= 0 ;i--) + dev_kfree_skb(lp->rx_skbuff[i]); + goto err_free_rx_ring; + } + skb_reserve(lp->rx_skbuff[i],2); + } + /* Initilaizing receive descriptors */ + for (i = 0; i < NUM_RX_BUFFERS; i++) { + lp->rx_dma_addr[i] = pci_map_single(lp->pci_dev, + lp->rx_skbuff[i]->data,lp->rx_buff_len-2, PCI_DMA_FROMDEVICE); + + lp->rx_ring[i].buff_phy_addr = cpu_to_le32(lp->rx_dma_addr[i]); + lp->rx_ring[i].buff_count = cpu_to_le16(lp->rx_buff_len-2); + wmb(); + lp->rx_ring[i].rx_flags = cpu_to_le16(OWN_BIT); + } + + /* Initializing transmit descriptors */ + for (i = 0; i < NUM_TX_RING_DR; i++) { + lp->tx_ring[i].buff_phy_addr = 0; + lp->tx_ring[i].tx_flags = 0; + lp->tx_ring[i].buff_count = 0; + } + + return 0; + +err_free_rx_ring: + + pci_free_consistent(lp->pci_dev, + sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,lp->rx_ring, + lp->rx_ring_dma_addr); + +err_free_tx_ring: + + pci_free_consistent(lp->pci_dev, + sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,lp->tx_ring, + lp->tx_ring_dma_addr); + +err_no_mem: + return -ENOMEM; +} +/* This function will set the interrupt coalescing according to the input arguments */ +static int amd8111e_set_coalesce(struct net_device * dev, enum coal_mode cmod) +{ + unsigned int timeout; + unsigned int event_count; + + struct amd8111e_priv *lp = netdev_priv(dev); + void __iomem *mmio = lp->mmio; + struct amd8111e_coalesce_conf * coal_conf = &lp->coal_conf; + + + switch(cmod) + { + case RX_INTR_COAL : + timeout = coal_conf->rx_timeout; + event_count = coal_conf->rx_event_count; + if( timeout > MAX_TIMEOUT || + event_count > MAX_EVENT_COUNT ) + return -EINVAL; + + timeout = timeout * DELAY_TIMER_CONV; + writel(VAL0|STINTEN, mmio+INTEN0); + writel((u32)DLY_INT_A_R0|( event_count<< 16 )|timeout, + mmio+DLY_INT_A); + break; + + case TX_INTR_COAL : + timeout = coal_conf->tx_timeout; + event_count = coal_conf->tx_event_count; + if( timeout > MAX_TIMEOUT || + event_count > MAX_EVENT_COUNT ) + return -EINVAL; + + + timeout = timeout * DELAY_TIMER_CONV; + writel(VAL0|STINTEN,mmio+INTEN0); + writel((u32)DLY_INT_B_T0|( event_count<< 16 )|timeout, + mmio+DLY_INT_B); + break; + + case DISABLE_COAL: + writel(0,mmio+STVAL); + writel(STINTEN, mmio+INTEN0); + writel(0, mmio +DLY_INT_B); + writel(0, mmio+DLY_INT_A); + break; + case ENABLE_COAL: + /* Start the timer */ + writel((u32)SOFT_TIMER_FREQ, mmio+STVAL); /* 0.5 sec */ + writel(VAL0|STINTEN, mmio+INTEN0); + break; + default: + break; + + } + return 0; + +} + +/* +This function initializes the device registers and starts the device. +*/ +static int amd8111e_restart(struct net_device *dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + void __iomem *mmio = lp->mmio; + int i,reg_val; + + /* stop the chip */ + writel(RUN, mmio + CMD0); + + if(amd8111e_init_ring(dev)) + return -ENOMEM; + + /* enable the port manager and set auto negotiation always */ + writel((u32) VAL1|EN_PMGR, mmio + CMD3 ); + writel((u32)XPHYANE|XPHYRST , mmio + CTRL2); + + amd8111e_set_ext_phy(dev); + + /* set control registers */ + reg_val = readl(mmio + CTRL1); + reg_val &= ~XMTSP_MASK; + writel( reg_val| XMTSP_128 | CACHE_ALIGN, mmio + CTRL1 ); + + /* enable interrupt */ + writel( APINT5EN | APINT4EN | APINT3EN | APINT2EN | APINT1EN | + APINT0EN | MIIPDTINTEN | MCCIINTEN | MCCINTEN | MREINTEN | + SPNDINTEN | MPINTEN | SINTEN | STINTEN, mmio + INTEN0); + + writel(VAL3 | LCINTEN | VAL1 | TINTEN0 | VAL0 | RINTEN0, mmio + INTEN0); + + /* initialize tx and rx ring base addresses */ + writel((u32)lp->tx_ring_dma_addr,mmio + XMT_RING_BASE_ADDR0); + writel((u32)lp->rx_ring_dma_addr,mmio+ RCV_RING_BASE_ADDR0); + + writew((u32)NUM_TX_RING_DR, mmio + XMT_RING_LEN0); + writew((u16)NUM_RX_RING_DR, mmio + RCV_RING_LEN0); + + /* set default IPG to 96 */ + writew((u32)DEFAULT_IPG,mmio+IPG); + writew((u32)(DEFAULT_IPG-IFS1_DELTA), mmio + IFS1); + + if(lp->options & OPTION_JUMBO_ENABLE){ + writel((u32)VAL2|JUMBO, mmio + CMD3); + /* Reset REX_UFLO */ + writel( REX_UFLO, mmio + CMD2); + /* Should not set REX_UFLO for jumbo frames */ + writel( VAL0 | APAD_XMT|REX_RTRY , mmio + CMD2); + }else{ + writel( VAL0 | APAD_XMT | REX_RTRY|REX_UFLO, mmio + CMD2); + writel((u32)JUMBO, mmio + CMD3); + } + +#if AMD8111E_VLAN_TAG_USED + writel((u32) VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3); +#endif + writel( VAL0 | APAD_XMT | REX_RTRY, mmio + CMD2 ); + + /* Setting the MAC address to the device */ + for(i = 0; i < ETH_ADDR_LEN; i++) + writeb( dev->dev_addr[i], mmio + PADR + i ); + + /* Enable interrupt coalesce */ + if(lp->options & OPTION_INTR_COAL_ENABLE){ + printk(KERN_INFO "%s: Interrupt Coalescing Enabled.\n", + dev->name); + amd8111e_set_coalesce(dev,ENABLE_COAL); + } + + /* set RUN bit to start the chip */ + writel(VAL2 | RDMD0, mmio + CMD0); + writel(VAL0 | INTREN | RUN, mmio + CMD0); + + /* To avoid PCI posting bug */ + readl(mmio+CMD0); + return 0; +} +/* +This function clears necessary the device registers. +*/ +static void amd8111e_init_hw_default( struct amd8111e_priv* lp) +{ + unsigned int reg_val; + unsigned int logic_filter[2] ={0,}; + void __iomem *mmio = lp->mmio; + + + /* stop the chip */ + writel(RUN, mmio + CMD0); + + /* AUTOPOLL0 Register *//*TBD default value is 8100 in FPS */ + writew( 0x8100 | lp->ext_phy_addr, mmio + AUTOPOLL0); + + /* Clear RCV_RING_BASE_ADDR */ + writel(0, mmio + RCV_RING_BASE_ADDR0); + + /* Clear XMT_RING_BASE_ADDR */ + writel(0, mmio + XMT_RING_BASE_ADDR0); + writel(0, mmio + XMT_RING_BASE_ADDR1); + writel(0, mmio + XMT_RING_BASE_ADDR2); + writel(0, mmio + XMT_RING_BASE_ADDR3); + + /* Clear CMD0 */ + writel(CMD0_CLEAR,mmio + CMD0); + + /* Clear CMD2 */ + writel(CMD2_CLEAR, mmio +CMD2); + + /* Clear CMD7 */ + writel(CMD7_CLEAR , mmio + CMD7); + + /* Clear DLY_INT_A and DLY_INT_B */ + writel(0x0, mmio + DLY_INT_A); + writel(0x0, mmio + DLY_INT_B); + + /* Clear FLOW_CONTROL */ + writel(0x0, mmio + FLOW_CONTROL); + + /* Clear INT0 write 1 to clear register */ + reg_val = readl(mmio + INT0); + writel(reg_val, mmio + INT0); + + /* Clear STVAL */ + writel(0x0, mmio + STVAL); + + /* Clear INTEN0 */ + writel( INTEN0_CLEAR, mmio + INTEN0); + + /* Clear LADRF */ + writel(0x0 , mmio + LADRF); + + /* Set SRAM_SIZE & SRAM_BOUNDARY registers */ + writel( 0x80010,mmio + SRAM_SIZE); + + /* Clear RCV_RING0_LEN */ + writel(0x0, mmio + RCV_RING_LEN0); + + /* Clear XMT_RING0/1/2/3_LEN */ + writel(0x0, mmio + XMT_RING_LEN0); + writel(0x0, mmio + XMT_RING_LEN1); + writel(0x0, mmio + XMT_RING_LEN2); + writel(0x0, mmio + XMT_RING_LEN3); + + /* Clear XMT_RING_LIMIT */ + writel(0x0, mmio + XMT_RING_LIMIT); + + /* Clear MIB */ + writew(MIB_CLEAR, mmio + MIB_ADDR); + + /* Clear LARF */ + amd8111e_writeq(*(u64*)logic_filter,mmio+LADRF); + + /* SRAM_SIZE register */ + reg_val = readl(mmio + SRAM_SIZE); + + if(lp->options & OPTION_JUMBO_ENABLE) + writel( VAL2|JUMBO, mmio + CMD3); +#if AMD8111E_VLAN_TAG_USED + writel(VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3 ); +#endif + /* Set default value to CTRL1 Register */ + writel(CTRL1_DEFAULT, mmio + CTRL1); + + /* To avoid PCI posting bug */ + readl(mmio + CMD2); + +} + +/* +This function disables the interrupt and clears all the pending +interrupts in INT0 + */ +static void amd8111e_disable_interrupt(struct amd8111e_priv* lp) +{ + u32 intr0; + + /* Disable interrupt */ + writel(INTREN, lp->mmio + CMD0); + + /* Clear INT0 */ + intr0 = readl(lp->mmio + INT0); + writel(intr0, lp->mmio + INT0); + + /* To avoid PCI posting bug */ + readl(lp->mmio + INT0); + +} + +/* +This function stops the chip. +*/ +static void amd8111e_stop_chip(struct amd8111e_priv* lp) +{ + writel(RUN, lp->mmio + CMD0); + + /* To avoid PCI posting bug */ + readl(lp->mmio + CMD0); +} + +/* +This function frees the transmiter and receiver descriptor rings. +*/ +static void amd8111e_free_ring(struct amd8111e_priv* lp) +{ + /* Free transmit and receive descriptor rings */ + if(lp->rx_ring){ + pci_free_consistent(lp->pci_dev, + sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR, + lp->rx_ring, lp->rx_ring_dma_addr); + lp->rx_ring = NULL; + } + + if(lp->tx_ring){ + pci_free_consistent(lp->pci_dev, + sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR, + lp->tx_ring, lp->tx_ring_dma_addr); + + lp->tx_ring = NULL; + } + +} + +/* +This function will free all the transmit skbs that are actually transmitted by the device. It will check the ownership of the skb before freeing the skb. +*/ +static int amd8111e_tx(struct net_device *dev) +{ + struct amd8111e_priv* lp = netdev_priv(dev); + int tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK; + int status; + /* Complete all the transmit packet */ + while (lp->tx_complete_idx != lp->tx_idx){ + tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK; + status = le16_to_cpu(lp->tx_ring[tx_index].tx_flags); + + if(status & OWN_BIT) + break; /* It still hasn't been Txed */ + + lp->tx_ring[tx_index].buff_phy_addr = 0; + + /* We must free the original skb */ + if (lp->tx_skbuff[tx_index]) { + pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[tx_index], + lp->tx_skbuff[tx_index]->len, + PCI_DMA_TODEVICE); + dev_kfree_skb_irq (lp->tx_skbuff[tx_index]); + lp->tx_skbuff[tx_index] = NULL; + lp->tx_dma_addr[tx_index] = 0; + } + lp->tx_complete_idx++; + /*COAL update tx coalescing parameters */ + lp->coal_conf.tx_packets++; + lp->coal_conf.tx_bytes += + le16_to_cpu(lp->tx_ring[tx_index].buff_count); + + if (netif_queue_stopped(dev) && + lp->tx_complete_idx > lp->tx_idx - NUM_TX_BUFFERS +2){ + /* The ring is no longer full, clear tbusy. */ + /* lp->tx_full = 0; */ + netif_wake_queue (dev); + } + } + return 0; +} + +/* This function handles the driver receive operation in polling mode */ +static int amd8111e_rx_poll(struct napi_struct *napi, int budget) +{ + struct amd8111e_priv *lp = container_of(napi, struct amd8111e_priv, napi); + struct net_device *dev = lp->amd8111e_net_dev; + int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK; + void __iomem *mmio = lp->mmio; + struct sk_buff *skb,*new_skb; + int min_pkt_len, status; + unsigned int intr0; + int num_rx_pkt = 0; + short pkt_len; +#if AMD8111E_VLAN_TAG_USED + short vtag; +#endif + int rx_pkt_limit = budget; + unsigned long flags; + + do{ + /* process receive packets until we use the quota*/ + /* If we own the next entry, it's a new packet. Send it up. */ + while(1) { + status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags); + if (status & OWN_BIT) + break; + + /* + * There is a tricky error noted by John Murphy, + * <murf@perftech.com> to Russ Nelson: Even with + * full-sized * buffers it's possible for a + * jabber packet to use two buffers, with only + * the last correctly noting the error. + */ + + if(status & ERR_BIT) { + /* reseting flags */ + lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS; + goto err_next_pkt; + } + /* check for STP and ENP */ + if(!((status & STP_BIT) && (status & ENP_BIT))){ + /* reseting flags */ + lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS; + goto err_next_pkt; + } + pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4; + +#if AMD8111E_VLAN_TAG_USED + vtag = status & TT_MASK; + /*MAC will strip vlan tag*/ + if (vtag != 0) + min_pkt_len =MIN_PKT_LEN - 4; + else +#endif + min_pkt_len =MIN_PKT_LEN; + + if (pkt_len < min_pkt_len) { + lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS; + lp->drv_rx_errors++; + goto err_next_pkt; + } + if(--rx_pkt_limit < 0) + goto rx_not_empty; + if(!(new_skb = dev_alloc_skb(lp->rx_buff_len))){ + /* if allocation fail, + ignore that pkt and go to next one */ + lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS; + lp->drv_rx_errors++; + goto err_next_pkt; + } + + skb_reserve(new_skb, 2); + skb = lp->rx_skbuff[rx_index]; + pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[rx_index], + lp->rx_buff_len-2, PCI_DMA_FROMDEVICE); + skb_put(skb, pkt_len); + lp->rx_skbuff[rx_index] = new_skb; + lp->rx_dma_addr[rx_index] = pci_map_single(lp->pci_dev, + new_skb->data, + lp->rx_buff_len-2, + PCI_DMA_FROMDEVICE); + + skb->protocol = eth_type_trans(skb, dev); + +#if AMD8111E_VLAN_TAG_USED + if (vtag == TT_VLAN_TAGGED){ + u16 vlan_tag = le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info); + __vlan_hwaccel_put_tag(skb, vlan_tag); + } +#endif + netif_receive_skb(skb); + /*COAL update rx coalescing parameters*/ + lp->coal_conf.rx_packets++; + lp->coal_conf.rx_bytes += pkt_len; + num_rx_pkt++; + + err_next_pkt: + lp->rx_ring[rx_index].buff_phy_addr + = cpu_to_le32(lp->rx_dma_addr[rx_index]); + lp->rx_ring[rx_index].buff_count = + cpu_to_le16(lp->rx_buff_len-2); + wmb(); + lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT); + rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK; + } + /* Check the interrupt status register for more packets in the + mean time. Process them since we have not used up our quota.*/ + + intr0 = readl(mmio + INT0); + /*Ack receive packets */ + writel(intr0 & RINT0,mmio + INT0); + + } while(intr0 & RINT0); + + if (rx_pkt_limit > 0) { + /* Receive descriptor is empty now */ + spin_lock_irqsave(&lp->lock, flags); + __napi_complete(napi); + writel(VAL0|RINTEN0, mmio + INTEN0); + writel(VAL2 | RDMD0, mmio + CMD0); + spin_unlock_irqrestore(&lp->lock, flags); + } + +rx_not_empty: + return num_rx_pkt; +} + +/* +This function will indicate the link status to the kernel. +*/ +static int amd8111e_link_change(struct net_device* dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + int status0,speed; + + /* read the link change */ + status0 = readl(lp->mmio + STAT0); + + if(status0 & LINK_STATS){ + if(status0 & AUTONEG_COMPLETE) + lp->link_config.autoneg = AUTONEG_ENABLE; + else + lp->link_config.autoneg = AUTONEG_DISABLE; + + if(status0 & FULL_DPLX) + lp->link_config.duplex = DUPLEX_FULL; + else + lp->link_config.duplex = DUPLEX_HALF; + speed = (status0 & SPEED_MASK) >> 7; + if(speed == PHY_SPEED_10) + lp->link_config.speed = SPEED_10; + else if(speed == PHY_SPEED_100) + lp->link_config.speed = SPEED_100; + + printk(KERN_INFO "%s: Link is Up. Speed is %s Mbps %s Duplex\n", dev->name, + (lp->link_config.speed == SPEED_100) ? "100": "10", + (lp->link_config.duplex == DUPLEX_FULL)? "Full": "Half"); + netif_carrier_on(dev); + } + else{ + lp->link_config.speed = SPEED_INVALID; + lp->link_config.duplex = DUPLEX_INVALID; + lp->link_config.autoneg = AUTONEG_INVALID; + printk(KERN_INFO "%s: Link is Down.\n",dev->name); + netif_carrier_off(dev); + } + + return 0; +} +/* +This function reads the mib counters. +*/ +static int amd8111e_read_mib(void __iomem *mmio, u8 MIB_COUNTER) +{ + unsigned int status; + unsigned int data; + unsigned int repeat = REPEAT_CNT; + + writew( MIB_RD_CMD | MIB_COUNTER, mmio + MIB_ADDR); + do { + status = readw(mmio + MIB_ADDR); + udelay(2); /* controller takes MAX 2 us to get mib data */ + } + while (--repeat && (status & MIB_CMD_ACTIVE)); + + data = readl(mmio + MIB_DATA); + return data; +} + +/* + * This function reads the mib registers and returns the hardware statistics. + * It updates previous internal driver statistics with new values. + */ +static struct net_device_stats *amd8111e_get_stats(struct net_device *dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + void __iomem *mmio = lp->mmio; + unsigned long flags; + struct net_device_stats *new_stats = &dev->stats; + + if (!lp->opened) + return new_stats; + spin_lock_irqsave (&lp->lock, flags); + + /* stats.rx_packets */ + new_stats->rx_packets = amd8111e_read_mib(mmio, rcv_broadcast_pkts)+ + amd8111e_read_mib(mmio, rcv_multicast_pkts)+ + amd8111e_read_mib(mmio, rcv_unicast_pkts); + + /* stats.tx_packets */ + new_stats->tx_packets = amd8111e_read_mib(mmio, xmt_packets); + + /*stats.rx_bytes */ + new_stats->rx_bytes = amd8111e_read_mib(mmio, rcv_octets); + + /* stats.tx_bytes */ + new_stats->tx_bytes = amd8111e_read_mib(mmio, xmt_octets); + + /* stats.rx_errors */ + /* hw errors + errors driver reported */ + new_stats->rx_errors = amd8111e_read_mib(mmio, rcv_undersize_pkts)+ + amd8111e_read_mib(mmio, rcv_fragments)+ + amd8111e_read_mib(mmio, rcv_jabbers)+ + amd8111e_read_mib(mmio, rcv_alignment_errors)+ + amd8111e_read_mib(mmio, rcv_fcs_errors)+ + amd8111e_read_mib(mmio, rcv_miss_pkts)+ + lp->drv_rx_errors; + + /* stats.tx_errors */ + new_stats->tx_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts); + + /* stats.rx_dropped*/ + new_stats->rx_dropped = amd8111e_read_mib(mmio, rcv_miss_pkts); + + /* stats.tx_dropped*/ + new_stats->tx_dropped = amd8111e_read_mib(mmio, xmt_underrun_pkts); + + /* stats.multicast*/ + new_stats->multicast = amd8111e_read_mib(mmio, rcv_multicast_pkts); + + /* stats.collisions*/ + new_stats->collisions = amd8111e_read_mib(mmio, xmt_collisions); + + /* stats.rx_length_errors*/ + new_stats->rx_length_errors = + amd8111e_read_mib(mmio, rcv_undersize_pkts)+ + amd8111e_read_mib(mmio, rcv_oversize_pkts); + + /* stats.rx_over_errors*/ + new_stats->rx_over_errors = amd8111e_read_mib(mmio, rcv_miss_pkts); + + /* stats.rx_crc_errors*/ + new_stats->rx_crc_errors = amd8111e_read_mib(mmio, rcv_fcs_errors); + + /* stats.rx_frame_errors*/ + new_stats->rx_frame_errors = + amd8111e_read_mib(mmio, rcv_alignment_errors); + + /* stats.rx_fifo_errors */ + new_stats->rx_fifo_errors = amd8111e_read_mib(mmio, rcv_miss_pkts); + + /* stats.rx_missed_errors */ + new_stats->rx_missed_errors = amd8111e_read_mib(mmio, rcv_miss_pkts); + + /* stats.tx_aborted_errors*/ + new_stats->tx_aborted_errors = + amd8111e_read_mib(mmio, xmt_excessive_collision); + + /* stats.tx_carrier_errors*/ + new_stats->tx_carrier_errors = + amd8111e_read_mib(mmio, xmt_loss_carrier); + + /* stats.tx_fifo_errors*/ + new_stats->tx_fifo_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts); + + /* stats.tx_window_errors*/ + new_stats->tx_window_errors = + amd8111e_read_mib(mmio, xmt_late_collision); + + /* Reset the mibs for collecting new statistics */ + /* writew(MIB_CLEAR, mmio + MIB_ADDR);*/ + + spin_unlock_irqrestore (&lp->lock, flags); + + return new_stats; +} +/* This function recalculate the interrupt coalescing mode on every interrupt +according to the datarate and the packet rate. +*/ +static int amd8111e_calc_coalesce(struct net_device *dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + struct amd8111e_coalesce_conf * coal_conf = &lp->coal_conf; + int tx_pkt_rate; + int rx_pkt_rate; + int tx_data_rate; + int rx_data_rate; + int rx_pkt_size; + int tx_pkt_size; + + tx_pkt_rate = coal_conf->tx_packets - coal_conf->tx_prev_packets; + coal_conf->tx_prev_packets = coal_conf->tx_packets; + + tx_data_rate = coal_conf->tx_bytes - coal_conf->tx_prev_bytes; + coal_conf->tx_prev_bytes = coal_conf->tx_bytes; + + rx_pkt_rate = coal_conf->rx_packets - coal_conf->rx_prev_packets; + coal_conf->rx_prev_packets = coal_conf->rx_packets; + + rx_data_rate = coal_conf->rx_bytes - coal_conf->rx_prev_bytes; + coal_conf->rx_prev_bytes = coal_conf->rx_bytes; + + if(rx_pkt_rate < 800){ + if(coal_conf->rx_coal_type != NO_COALESCE){ + + coal_conf->rx_timeout = 0x0; + coal_conf->rx_event_count = 0; + amd8111e_set_coalesce(dev,RX_INTR_COAL); + coal_conf->rx_coal_type = NO_COALESCE; + } + } + else{ + + rx_pkt_size = rx_data_rate/rx_pkt_rate; + if (rx_pkt_size < 128){ + if(coal_conf->rx_coal_type != NO_COALESCE){ + + coal_conf->rx_timeout = 0; + coal_conf->rx_event_count = 0; + amd8111e_set_coalesce(dev,RX_INTR_COAL); + coal_conf->rx_coal_type = NO_COALESCE; + } + + } + else if ( (rx_pkt_size >= 128) && (rx_pkt_size < 512) ){ + + if(coal_conf->rx_coal_type != LOW_COALESCE){ + coal_conf->rx_timeout = 1; + coal_conf->rx_event_count = 4; + amd8111e_set_coalesce(dev,RX_INTR_COAL); + coal_conf->rx_coal_type = LOW_COALESCE; + } + } + else if ((rx_pkt_size >= 512) && (rx_pkt_size < 1024)){ + + if(coal_conf->rx_coal_type != MEDIUM_COALESCE){ + coal_conf->rx_timeout = 1; + coal_conf->rx_event_count = 4; + amd8111e_set_coalesce(dev,RX_INTR_COAL); + coal_conf->rx_coal_type = MEDIUM_COALESCE; + } + + } + else if(rx_pkt_size >= 1024){ + if(coal_conf->rx_coal_type != HIGH_COALESCE){ + coal_conf->rx_timeout = 2; + coal_conf->rx_event_count = 3; + amd8111e_set_coalesce(dev,RX_INTR_COAL); + coal_conf->rx_coal_type = HIGH_COALESCE; + } + } + } + /* NOW FOR TX INTR COALESC */ + if(tx_pkt_rate < 800){ + if(coal_conf->tx_coal_type != NO_COALESCE){ + + coal_conf->tx_timeout = 0x0; + coal_conf->tx_event_count = 0; + amd8111e_set_coalesce(dev,TX_INTR_COAL); + coal_conf->tx_coal_type = NO_COALESCE; + } + } + else{ + + tx_pkt_size = tx_data_rate/tx_pkt_rate; + if (tx_pkt_size < 128){ + + if(coal_conf->tx_coal_type != NO_COALESCE){ + + coal_conf->tx_timeout = 0; + coal_conf->tx_event_count = 0; + amd8111e_set_coalesce(dev,TX_INTR_COAL); + coal_conf->tx_coal_type = NO_COALESCE; + } + + } + else if ( (tx_pkt_size >= 128) && (tx_pkt_size < 512) ){ + + if(coal_conf->tx_coal_type != LOW_COALESCE){ + coal_conf->tx_timeout = 1; + coal_conf->tx_event_count = 2; + amd8111e_set_coalesce(dev,TX_INTR_COAL); + coal_conf->tx_coal_type = LOW_COALESCE; + + } + } + else if ((tx_pkt_size >= 512) && (tx_pkt_size < 1024)){ + + if(coal_conf->tx_coal_type != MEDIUM_COALESCE){ + coal_conf->tx_timeout = 2; + coal_conf->tx_event_count = 5; + amd8111e_set_coalesce(dev,TX_INTR_COAL); + coal_conf->tx_coal_type = MEDIUM_COALESCE; + } + + } + else if(tx_pkt_size >= 1024){ + if (tx_pkt_size >= 1024){ + if(coal_conf->tx_coal_type != HIGH_COALESCE){ + coal_conf->tx_timeout = 4; + coal_conf->tx_event_count = 8; + amd8111e_set_coalesce(dev,TX_INTR_COAL); + coal_conf->tx_coal_type = HIGH_COALESCE; + } + } + } + } + return 0; + +} +/* +This is device interrupt function. It handles transmit, receive,link change and hardware timer interrupts. +*/ +static irqreturn_t amd8111e_interrupt(int irq, void *dev_id) +{ + + struct net_device * dev = (struct net_device *) dev_id; + struct amd8111e_priv *lp = netdev_priv(dev); + void __iomem *mmio = lp->mmio; + unsigned int intr0, intren0; + unsigned int handled = 1; + + if(unlikely(dev == NULL)) + return IRQ_NONE; + + spin_lock(&lp->lock); + + /* disabling interrupt */ + writel(INTREN, mmio + CMD0); + + /* Read interrupt status */ + intr0 = readl(mmio + INT0); + intren0 = readl(mmio + INTEN0); + + /* Process all the INT event until INTR bit is clear. */ + + if (!(intr0 & INTR)){ + handled = 0; + goto err_no_interrupt; + } + + /* Current driver processes 4 interrupts : RINT,TINT,LCINT,STINT */ + writel(intr0, mmio + INT0); + + /* Check if Receive Interrupt has occurred. */ + if (intr0 & RINT0) { + if (napi_schedule_prep(&lp->napi)) { + /* Disable receive interupts */ + writel(RINTEN0, mmio + INTEN0); + /* Schedule a polling routine */ + __napi_schedule(&lp->napi); + } else if (intren0 & RINTEN0) { + printk("************Driver bug! interrupt while in poll\n"); + /* Fix by disable receive interrupts */ + writel(RINTEN0, mmio + INTEN0); + } + } + + /* Check if Transmit Interrupt has occurred. */ + if (intr0 & TINT0) + amd8111e_tx(dev); + + /* Check if Link Change Interrupt has occurred. */ + if (intr0 & LCINT) + amd8111e_link_change(dev); + + /* Check if Hardware Timer Interrupt has occurred. */ + if (intr0 & STINT) + amd8111e_calc_coalesce(dev); + +err_no_interrupt: + writel( VAL0 | INTREN,mmio + CMD0); + + spin_unlock(&lp->lock); + + return IRQ_RETVAL(handled); +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void amd8111e_poll(struct net_device *dev) +{ + unsigned long flags; + local_irq_save(flags); + amd8111e_interrupt(0, dev); + local_irq_restore(flags); +} +#endif + + +/* +This function closes the network interface and updates the statistics so that most recent statistics will be available after the interface is down. +*/ +static int amd8111e_close(struct net_device * dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + netif_stop_queue(dev); + + napi_disable(&lp->napi); + + spin_lock_irq(&lp->lock); + + amd8111e_disable_interrupt(lp); + amd8111e_stop_chip(lp); + + /* Free transmit and receive skbs */ + amd8111e_free_skbs(lp->amd8111e_net_dev); + + netif_carrier_off(lp->amd8111e_net_dev); + + /* Delete ipg timer */ + if(lp->options & OPTION_DYN_IPG_ENABLE) + del_timer_sync(&lp->ipg_data.ipg_timer); + + spin_unlock_irq(&lp->lock); + free_irq(dev->irq, dev); + amd8111e_free_ring(lp); + + /* Update the statistics before closing */ + amd8111e_get_stats(dev); + lp->opened = 0; + return 0; +} +/* This function opens new interface.It requests irq for the device, initializes the device,buffers and descriptors, and starts the device. +*/ +static int amd8111e_open(struct net_device * dev ) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + + if(dev->irq ==0 || request_irq(dev->irq, amd8111e_interrupt, IRQF_SHARED, + dev->name, dev)) + return -EAGAIN; + + napi_enable(&lp->napi); + + spin_lock_irq(&lp->lock); + + amd8111e_init_hw_default(lp); + + if(amd8111e_restart(dev)){ + spin_unlock_irq(&lp->lock); + napi_disable(&lp->napi); + if (dev->irq) + free_irq(dev->irq, dev); + return -ENOMEM; + } + /* Start ipg timer */ + if(lp->options & OPTION_DYN_IPG_ENABLE){ + add_timer(&lp->ipg_data.ipg_timer); + printk(KERN_INFO "%s: Dynamic IPG Enabled.\n",dev->name); + } + + lp->opened = 1; + + spin_unlock_irq(&lp->lock); + + netif_start_queue(dev); + + return 0; +} +/* +This function checks if there is any transmit descriptors available to queue more packet. +*/ +static int amd8111e_tx_queue_avail(struct amd8111e_priv* lp ) +{ + int tx_index = lp->tx_idx & TX_BUFF_MOD_MASK; + if (lp->tx_skbuff[tx_index]) + return -1; + else + return 0; + +} +/* +This function will queue the transmit packets to the descriptors and will trigger the send operation. It also initializes the transmit descriptors with buffer physical address, byte count, ownership to hardware etc. +*/ + +static netdev_tx_t amd8111e_start_xmit(struct sk_buff *skb, + struct net_device * dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + int tx_index; + unsigned long flags; + + spin_lock_irqsave(&lp->lock, flags); + + tx_index = lp->tx_idx & TX_RING_DR_MOD_MASK; + + lp->tx_ring[tx_index].buff_count = cpu_to_le16(skb->len); + + lp->tx_skbuff[tx_index] = skb; + lp->tx_ring[tx_index].tx_flags = 0; + +#if AMD8111E_VLAN_TAG_USED + if (vlan_tx_tag_present(skb)) { + lp->tx_ring[tx_index].tag_ctrl_cmd |= + cpu_to_le16(TCC_VLAN_INSERT); + lp->tx_ring[tx_index].tag_ctrl_info = + cpu_to_le16(vlan_tx_tag_get(skb)); + + } +#endif + lp->tx_dma_addr[tx_index] = + pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE); + lp->tx_ring[tx_index].buff_phy_addr = + cpu_to_le32(lp->tx_dma_addr[tx_index]); + + /* Set FCS and LTINT bits */ + wmb(); + lp->tx_ring[tx_index].tx_flags |= + cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT|ADD_FCS_BIT|LTINT_BIT); + + lp->tx_idx++; + + /* Trigger an immediate send poll. */ + writel( VAL1 | TDMD0, lp->mmio + CMD0); + writel( VAL2 | RDMD0,lp->mmio + CMD0); + + if(amd8111e_tx_queue_avail(lp) < 0){ + netif_stop_queue(dev); + } + spin_unlock_irqrestore(&lp->lock, flags); + return NETDEV_TX_OK; +} +/* +This function returns all the memory mapped registers of the device. +*/ +static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf) +{ + void __iomem *mmio = lp->mmio; + /* Read only necessary registers */ + buf[0] = readl(mmio + XMT_RING_BASE_ADDR0); + buf[1] = readl(mmio + XMT_RING_LEN0); + buf[2] = readl(mmio + RCV_RING_BASE_ADDR0); + buf[3] = readl(mmio + RCV_RING_LEN0); + buf[4] = readl(mmio + CMD0); + buf[5] = readl(mmio + CMD2); + buf[6] = readl(mmio + CMD3); + buf[7] = readl(mmio + CMD7); + buf[8] = readl(mmio + INT0); + buf[9] = readl(mmio + INTEN0); + buf[10] = readl(mmio + LADRF); + buf[11] = readl(mmio + LADRF+4); + buf[12] = readl(mmio + STAT0); +} + + +/* +This function sets promiscuos mode, all-multi mode or the multicast address +list to the device. +*/ +static void amd8111e_set_multicast_list(struct net_device *dev) +{ + struct netdev_hw_addr *ha; + struct amd8111e_priv *lp = netdev_priv(dev); + u32 mc_filter[2] ; + int bit_num; + + if(dev->flags & IFF_PROMISC){ + writel( VAL2 | PROM, lp->mmio + CMD2); + return; + } + else + writel( PROM, lp->mmio + CMD2); + if (dev->flags & IFF_ALLMULTI || + netdev_mc_count(dev) > MAX_FILTER_SIZE) { + /* get all multicast packet */ + mc_filter[1] = mc_filter[0] = 0xffffffff; + lp->options |= OPTION_MULTICAST_ENABLE; + amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF); + return; + } + if (netdev_mc_empty(dev)) { + /* get only own packets */ + mc_filter[1] = mc_filter[0] = 0; + lp->options &= ~OPTION_MULTICAST_ENABLE; + amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF); + /* disable promiscuous mode */ + writel(PROM, lp->mmio + CMD2); + return; + } + /* load all the multicast addresses in the logic filter */ + lp->options |= OPTION_MULTICAST_ENABLE; + mc_filter[1] = mc_filter[0] = 0; + netdev_for_each_mc_addr(ha, dev) { + bit_num = (ether_crc_le(ETH_ALEN, ha->addr) >> 26) & 0x3f; + mc_filter[bit_num >> 5] |= 1 << (bit_num & 31); + } + amd8111e_writeq(*(u64*)mc_filter,lp->mmio+ LADRF); + + /* To eliminate PCI posting bug */ + readl(lp->mmio + CMD2); + +} + +static void amd8111e_get_drvinfo(struct net_device* dev, struct ethtool_drvinfo *info) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + struct pci_dev *pci_dev = lp->pci_dev; + strcpy (info->driver, MODULE_NAME); + strcpy (info->version, MODULE_VERS); + sprintf(info->fw_version,"%u",chip_version); + strcpy (info->bus_info, pci_name(pci_dev)); +} + +static int amd8111e_get_regs_len(struct net_device *dev) +{ + return AMD8111E_REG_DUMP_LEN; +} + +static void amd8111e_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + regs->version = 0; + amd8111e_read_regs(lp, buf); +} + +static int amd8111e_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + spin_lock_irq(&lp->lock); + mii_ethtool_gset(&lp->mii_if, ecmd); + spin_unlock_irq(&lp->lock); + return 0; +} + +static int amd8111e_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + int res; + spin_lock_irq(&lp->lock); + res = mii_ethtool_sset(&lp->mii_if, ecmd); + spin_unlock_irq(&lp->lock); + return res; +} + +static int amd8111e_nway_reset(struct net_device *dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + return mii_nway_restart(&lp->mii_if); +} + +static u32 amd8111e_get_link(struct net_device *dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + return mii_link_ok(&lp->mii_if); +} + +static void amd8111e_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + wol_info->supported = WAKE_MAGIC|WAKE_PHY; + if (lp->options & OPTION_WOL_ENABLE) + wol_info->wolopts = WAKE_MAGIC; +} + +static int amd8111e_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + if (wol_info->wolopts & ~(WAKE_MAGIC|WAKE_PHY)) + return -EINVAL; + spin_lock_irq(&lp->lock); + if (wol_info->wolopts & WAKE_MAGIC) + lp->options |= + (OPTION_WOL_ENABLE | OPTION_WAKE_MAGIC_ENABLE); + else if(wol_info->wolopts & WAKE_PHY) + lp->options |= + (OPTION_WOL_ENABLE | OPTION_WAKE_PHY_ENABLE); + else + lp->options &= ~OPTION_WOL_ENABLE; + spin_unlock_irq(&lp->lock); + return 0; +} + +static const struct ethtool_ops ops = { + .get_drvinfo = amd8111e_get_drvinfo, + .get_regs_len = amd8111e_get_regs_len, + .get_regs = amd8111e_get_regs, + .get_settings = amd8111e_get_settings, + .set_settings = amd8111e_set_settings, + .nway_reset = amd8111e_nway_reset, + .get_link = amd8111e_get_link, + .get_wol = amd8111e_get_wol, + .set_wol = amd8111e_set_wol, +}; + +/* +This function handles all the ethtool ioctls. It gives driver info, gets/sets driver speed, gets memory mapped register values, forces auto negotiation, sets/gets WOL options for ethtool application. +*/ + +static int amd8111e_ioctl(struct net_device * dev , struct ifreq *ifr, int cmd) +{ + struct mii_ioctl_data *data = if_mii(ifr); + struct amd8111e_priv *lp = netdev_priv(dev); + int err; + u32 mii_regval; + + switch(cmd) { + case SIOCGMIIPHY: + data->phy_id = lp->ext_phy_addr; + + /* fallthru */ + case SIOCGMIIREG: + + spin_lock_irq(&lp->lock); + err = amd8111e_read_phy(lp, data->phy_id, + data->reg_num & PHY_REG_ADDR_MASK, &mii_regval); + spin_unlock_irq(&lp->lock); + + data->val_out = mii_regval; + return err; + + case SIOCSMIIREG: + + spin_lock_irq(&lp->lock); + err = amd8111e_write_phy(lp, data->phy_id, + data->reg_num & PHY_REG_ADDR_MASK, data->val_in); + spin_unlock_irq(&lp->lock); + + return err; + + default: + /* do nothing */ + break; + } + return -EOPNOTSUPP; +} +static int amd8111e_set_mac_address(struct net_device *dev, void *p) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + int i; + struct sockaddr *addr = p; + + memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); + spin_lock_irq(&lp->lock); + /* Setting the MAC address to the device */ + for(i = 0; i < ETH_ADDR_LEN; i++) + writeb( dev->dev_addr[i], lp->mmio + PADR + i ); + + spin_unlock_irq(&lp->lock); + + return 0; +} + +/* +This function changes the mtu of the device. It restarts the device to initialize the descriptor with new receive buffers. +*/ +static int amd8111e_change_mtu(struct net_device *dev, int new_mtu) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + int err; + + if ((new_mtu < AMD8111E_MIN_MTU) || (new_mtu > AMD8111E_MAX_MTU)) + return -EINVAL; + + if (!netif_running(dev)) { + /* new_mtu will be used + when device starts netxt time */ + dev->mtu = new_mtu; + return 0; + } + + spin_lock_irq(&lp->lock); + + /* stop the chip */ + writel(RUN, lp->mmio + CMD0); + + dev->mtu = new_mtu; + + err = amd8111e_restart(dev); + spin_unlock_irq(&lp->lock); + if(!err) + netif_start_queue(dev); + return err; +} + +static int amd8111e_enable_magicpkt(struct amd8111e_priv* lp) +{ + writel( VAL1|MPPLBA, lp->mmio + CMD3); + writel( VAL0|MPEN_SW, lp->mmio + CMD7); + + /* To eliminate PCI posting bug */ + readl(lp->mmio + CMD7); + return 0; +} + +static int amd8111e_enable_link_change(struct amd8111e_priv* lp) +{ + + /* Adapter is already stoped/suspended/interrupt-disabled */ + writel(VAL0|LCMODE_SW,lp->mmio + CMD7); + + /* To eliminate PCI posting bug */ + readl(lp->mmio + CMD7); + return 0; +} + +/* + * This function is called when a packet transmission fails to complete + * within a reasonable period, on the assumption that an interrupt have + * failed or the interface is locked up. This function will reinitialize + * the hardware. + */ +static void amd8111e_tx_timeout(struct net_device *dev) +{ + struct amd8111e_priv* lp = netdev_priv(dev); + int err; + + printk(KERN_ERR "%s: transmit timed out, resetting\n", + dev->name); + spin_lock_irq(&lp->lock); + err = amd8111e_restart(dev); + spin_unlock_irq(&lp->lock); + if(!err) + netif_wake_queue(dev); +} +static int amd8111e_suspend(struct pci_dev *pci_dev, pm_message_t state) +{ + struct net_device *dev = pci_get_drvdata(pci_dev); + struct amd8111e_priv *lp = netdev_priv(dev); + + if (!netif_running(dev)) + return 0; + + /* disable the interrupt */ + spin_lock_irq(&lp->lock); + amd8111e_disable_interrupt(lp); + spin_unlock_irq(&lp->lock); + + netif_device_detach(dev); + + /* stop chip */ + spin_lock_irq(&lp->lock); + if(lp->options & OPTION_DYN_IPG_ENABLE) + del_timer_sync(&lp->ipg_data.ipg_timer); + amd8111e_stop_chip(lp); + spin_unlock_irq(&lp->lock); + + if(lp->options & OPTION_WOL_ENABLE){ + /* enable wol */ + if(lp->options & OPTION_WAKE_MAGIC_ENABLE) + amd8111e_enable_magicpkt(lp); + if(lp->options & OPTION_WAKE_PHY_ENABLE) + amd8111e_enable_link_change(lp); + + pci_enable_wake(pci_dev, PCI_D3hot, 1); + pci_enable_wake(pci_dev, PCI_D3cold, 1); + + } + else{ + pci_enable_wake(pci_dev, PCI_D3hot, 0); + pci_enable_wake(pci_dev, PCI_D3cold, 0); + } + + pci_save_state(pci_dev); + pci_set_power_state(pci_dev, PCI_D3hot); + + return 0; +} +static int amd8111e_resume(struct pci_dev *pci_dev) +{ + struct net_device *dev = pci_get_drvdata(pci_dev); + struct amd8111e_priv *lp = netdev_priv(dev); + + if (!netif_running(dev)) + return 0; + + pci_set_power_state(pci_dev, PCI_D0); + pci_restore_state(pci_dev); + + pci_enable_wake(pci_dev, PCI_D3hot, 0); + pci_enable_wake(pci_dev, PCI_D3cold, 0); /* D3 cold */ + + netif_device_attach(dev); + + spin_lock_irq(&lp->lock); + amd8111e_restart(dev); + /* Restart ipg timer */ + if(lp->options & OPTION_DYN_IPG_ENABLE) + mod_timer(&lp->ipg_data.ipg_timer, + jiffies + IPG_CONVERGE_JIFFIES); + spin_unlock_irq(&lp->lock); + + return 0; +} + + +static void __devexit amd8111e_remove_one(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + if (dev) { + unregister_netdev(dev); + iounmap(((struct amd8111e_priv *)netdev_priv(dev))->mmio); + free_netdev(dev); + pci_release_regions(pdev); + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); + } +} +static void amd8111e_config_ipg(struct net_device* dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + struct ipg_info* ipg_data = &lp->ipg_data; + void __iomem *mmio = lp->mmio; + unsigned int prev_col_cnt = ipg_data->col_cnt; + unsigned int total_col_cnt; + unsigned int tmp_ipg; + + if(lp->link_config.duplex == DUPLEX_FULL){ + ipg_data->ipg = DEFAULT_IPG; + return; + } + + if(ipg_data->ipg_state == SSTATE){ + + if(ipg_data->timer_tick == IPG_STABLE_TIME){ + + ipg_data->timer_tick = 0; + ipg_data->ipg = MIN_IPG - IPG_STEP; + ipg_data->current_ipg = MIN_IPG; + ipg_data->diff_col_cnt = 0xFFFFFFFF; + ipg_data->ipg_state = CSTATE; + } + else + ipg_data->timer_tick++; + } + + if(ipg_data->ipg_state == CSTATE){ + + /* Get the current collision count */ + + total_col_cnt = ipg_data->col_cnt = + amd8111e_read_mib(mmio, xmt_collisions); + + if ((total_col_cnt - prev_col_cnt) < + (ipg_data->diff_col_cnt)){ + + ipg_data->diff_col_cnt = + total_col_cnt - prev_col_cnt ; + + ipg_data->ipg = ipg_data->current_ipg; + } + + ipg_data->current_ipg += IPG_STEP; + + if (ipg_data->current_ipg <= MAX_IPG) + tmp_ipg = ipg_data->current_ipg; + else{ + tmp_ipg = ipg_data->ipg; + ipg_data->ipg_state = SSTATE; + } + writew((u32)tmp_ipg, mmio + IPG); + writew((u32)(tmp_ipg - IFS1_DELTA), mmio + IFS1); + } + mod_timer(&lp->ipg_data.ipg_timer, jiffies + IPG_CONVERGE_JIFFIES); + return; + +} + +static void __devinit amd8111e_probe_ext_phy(struct net_device* dev) +{ + struct amd8111e_priv *lp = netdev_priv(dev); + int i; + + for (i = 0x1e; i >= 0; i--) { + u32 id1, id2; + + if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1)) + continue; + if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2)) + continue; + lp->ext_phy_id = (id1 << 16) | id2; + lp->ext_phy_addr = i; + return; + } + lp->ext_phy_id = 0; + lp->ext_phy_addr = 1; +} + +static const struct net_device_ops amd8111e_netdev_ops = { + .ndo_open = amd8111e_open, + .ndo_stop = amd8111e_close, + .ndo_start_xmit = amd8111e_start_xmit, + .ndo_tx_timeout = amd8111e_tx_timeout, + .ndo_get_stats = amd8111e_get_stats, + .ndo_set_rx_mode = amd8111e_set_multicast_list, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = amd8111e_set_mac_address, + .ndo_do_ioctl = amd8111e_ioctl, + .ndo_change_mtu = amd8111e_change_mtu, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = amd8111e_poll, +#endif +}; + +static int __devinit amd8111e_probe_one(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + int err,i,pm_cap; + unsigned long reg_addr,reg_len; + struct amd8111e_priv* lp; + struct net_device* dev; + + err = pci_enable_device(pdev); + if(err){ + printk(KERN_ERR "amd8111e: Cannot enable new PCI device, " + "exiting.\n"); + return err; + } + + if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)){ + printk(KERN_ERR "amd8111e: Cannot find PCI base address, " + "exiting.\n"); + err = -ENODEV; + goto err_disable_pdev; + } + + err = pci_request_regions(pdev, MODULE_NAME); + if(err){ + printk(KERN_ERR "amd8111e: Cannot obtain PCI resources, " + "exiting.\n"); + goto err_disable_pdev; + } + + pci_set_master(pdev); + + /* Find power-management capability. */ + if((pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM))==0){ + printk(KERN_ERR "amd8111e: No Power Management capability, " + "exiting.\n"); + goto err_free_reg; + } + + /* Initialize DMA */ + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) < 0) { + printk(KERN_ERR "amd8111e: DMA not supported," + "exiting.\n"); + goto err_free_reg; + } + + reg_addr = pci_resource_start(pdev, 0); + reg_len = pci_resource_len(pdev, 0); + + dev = alloc_etherdev(sizeof(struct amd8111e_priv)); + if (!dev) { + printk(KERN_ERR "amd8111e: Etherdev alloc failed, exiting.\n"); + err = -ENOMEM; + goto err_free_reg; + } + + SET_NETDEV_DEV(dev, &pdev->dev); + +#if AMD8111E_VLAN_TAG_USED + dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX ; +#endif + + lp = netdev_priv(dev); + lp->pci_dev = pdev; + lp->amd8111e_net_dev = dev; + lp->pm_cap = pm_cap; + + spin_lock_init(&lp->lock); + + lp->mmio = ioremap(reg_addr, reg_len); + if (!lp->mmio) { + printk(KERN_ERR "amd8111e: Cannot map device registers, " + "exiting\n"); + err = -ENOMEM; + goto err_free_dev; + } + + /* Initializing MAC address */ + for(i = 0; i < ETH_ADDR_LEN; i++) + dev->dev_addr[i] = readb(lp->mmio + PADR + i); + + /* Setting user defined parametrs */ + lp->ext_phy_option = speed_duplex[card_idx]; + if(coalesce[card_idx]) + lp->options |= OPTION_INTR_COAL_ENABLE; + if(dynamic_ipg[card_idx++]) + lp->options |= OPTION_DYN_IPG_ENABLE; + + + /* Initialize driver entry points */ + dev->netdev_ops = &amd8111e_netdev_ops; + SET_ETHTOOL_OPS(dev, &ops); + dev->irq =pdev->irq; + dev->watchdog_timeo = AMD8111E_TX_TIMEOUT; + netif_napi_add(dev, &lp->napi, amd8111e_rx_poll, 32); + +#if AMD8111E_VLAN_TAG_USED + dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; +#endif + /* Probe the external PHY */ + amd8111e_probe_ext_phy(dev); + + /* setting mii default values */ + lp->mii_if.dev = dev; + lp->mii_if.mdio_read = amd8111e_mdio_read; + lp->mii_if.mdio_write = amd8111e_mdio_write; + lp->mii_if.phy_id = lp->ext_phy_addr; + + /* Set receive buffer length and set jumbo option*/ + amd8111e_set_rx_buff_len(dev); + + + err = register_netdev(dev); + if (err) { + printk(KERN_ERR "amd8111e: Cannot register net device, " + "exiting.\n"); + goto err_iounmap; + } + + pci_set_drvdata(pdev, dev); + + /* Initialize software ipg timer */ + if(lp->options & OPTION_DYN_IPG_ENABLE){ + init_timer(&lp->ipg_data.ipg_timer); + lp->ipg_data.ipg_timer.data = (unsigned long) dev; + lp->ipg_data.ipg_timer.function = (void *)&amd8111e_config_ipg; + lp->ipg_data.ipg_timer.expires = jiffies + + IPG_CONVERGE_JIFFIES; + lp->ipg_data.ipg = DEFAULT_IPG; + lp->ipg_data.ipg_state = CSTATE; + } + + /* display driver and device information */ + + chip_version = (readl(lp->mmio + CHIPID) & 0xf0000000)>>28; + printk(KERN_INFO "%s: AMD-8111e Driver Version: %s\n", + dev->name,MODULE_VERS); + printk(KERN_INFO "%s: [ Rev %x ] PCI 10/100BaseT Ethernet %pM\n", + dev->name, chip_version, dev->dev_addr); + if (lp->ext_phy_id) + printk(KERN_INFO "%s: Found MII PHY ID 0x%08x at address 0x%02x\n", + dev->name, lp->ext_phy_id, lp->ext_phy_addr); + else + printk(KERN_INFO "%s: Couldn't detect MII PHY, assuming address 0x01\n", + dev->name); + return 0; +err_iounmap: + iounmap(lp->mmio); + +err_free_dev: + free_netdev(dev); + +err_free_reg: + pci_release_regions(pdev); + +err_disable_pdev: + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); + return err; + +} + +static struct pci_driver amd8111e_driver = { + .name = MODULE_NAME, + .id_table = amd8111e_pci_tbl, + .probe = amd8111e_probe_one, + .remove = __devexit_p(amd8111e_remove_one), + .suspend = amd8111e_suspend, + .resume = amd8111e_resume +}; + +static int __init amd8111e_init(void) +{ + return pci_register_driver(&amd8111e_driver); +} + +static void __exit amd8111e_cleanup(void) +{ + pci_unregister_driver(&amd8111e_driver); +} + +module_init(amd8111e_init); +module_exit(amd8111e_cleanup); diff --git a/drivers/net/ethernet/amd/amd8111e.h b/drivers/net/ethernet/amd/amd8111e.h new file mode 100644 index 000000000000..2ff2e7a12dd0 --- /dev/null +++ b/drivers/net/ethernet/amd/amd8111e.h @@ -0,0 +1,816 @@ +/* + * Advanced Micro Devices Inc. AMD8111E Linux Network Driver + * Copyright (C) 2003 Advanced Micro Devices + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + +Module Name: + + amd8111e.h + +Abstract: + + AMD8111 based 10/100 Ethernet Controller driver definitions. + +Environment: + + Kernel Mode + +Revision History: + 3.0.0 + Initial Revision. + 3.0.1 +*/ + +#ifndef _AMD811E_H +#define _AMD811E_H + +/* Command style register access + +Registers CMD0, CMD2, CMD3,CMD7 and INTEN0 uses a write access technique called command style access. It allows the write to selected bits of this register without altering the bits that are not selected. Command style registers are divided into 4 bytes that can be written independently. Higher order bit of each byte is the value bit that specifies the value that will be written into the selected bits of register. + +eg., if the value 10011010b is written into the least significant byte of a command style register, bits 1,3 and 4 of the register will be set to 1, and the other bits will not be altered. If the value 00011010b is written into the same byte, bits 1,3 and 4 will be cleared to 0 and the other bits will not be altered. + +*/ + +/* Offset for Memory Mapped Registers. */ +/* 32 bit registers */ + +#define ASF_STAT 0x00 /* ASF status register */ +#define CHIPID 0x04 /* Chip ID regsiter */ +#define MIB_DATA 0x10 /* MIB data register */ +#define MIB_ADDR 0x14 /* MIB address register */ +#define STAT0 0x30 /* Status0 register */ +#define INT0 0x38 /* Interrupt0 register */ +#define INTEN0 0x40 /* Interrupt0 enable register*/ +#define CMD0 0x48 /* Command0 register */ +#define CMD2 0x50 /* Command2 register */ +#define CMD3 0x54 /* Command3 resiter */ +#define CMD7 0x64 /* Command7 register */ + +#define CTRL1 0x6C /* Control1 register */ +#define CTRL2 0x70 /* Control2 register */ + +#define XMT_RING_LIMIT 0x7C /* Transmit ring limit register */ + +#define AUTOPOLL0 0x88 /* Auto-poll0 register */ +#define AUTOPOLL1 0x8A /* Auto-poll1 register */ +#define AUTOPOLL2 0x8C /* Auto-poll2 register */ +#define AUTOPOLL3 0x8E /* Auto-poll3 register */ +#define AUTOPOLL4 0x90 /* Auto-poll4 register */ +#define AUTOPOLL5 0x92 /* Auto-poll5 register */ + +#define AP_VALUE 0x98 /* Auto-poll value register */ +#define DLY_INT_A 0xA8 /* Group A delayed interrupt register */ +#define DLY_INT_B 0xAC /* Group B delayed interrupt register */ + +#define FLOW_CONTROL 0xC8 /* Flow control register */ +#define PHY_ACCESS 0xD0 /* PHY access register */ + +#define STVAL 0xD8 /* Software timer value register */ + +#define XMT_RING_BASE_ADDR0 0x100 /* Transmit ring0 base addr register */ +#define XMT_RING_BASE_ADDR1 0x108 /* Transmit ring1 base addr register */ +#define XMT_RING_BASE_ADDR2 0x110 /* Transmit ring2 base addr register */ +#define XMT_RING_BASE_ADDR3 0x118 /* Transmit ring2 base addr register */ + +#define RCV_RING_BASE_ADDR0 0x120 /* Transmit ring0 base addr register */ + +#define PMAT0 0x190 /* OnNow pattern register0 */ +#define PMAT1 0x194 /* OnNow pattern register1 */ + +/* 16bit registers */ + +#define XMT_RING_LEN0 0x140 /* Transmit Ring0 length register */ +#define XMT_RING_LEN1 0x144 /* Transmit Ring1 length register */ +#define XMT_RING_LEN2 0x148 /* Transmit Ring2 length register */ +#define XMT_RING_LEN3 0x14C /* Transmit Ring3 length register */ + +#define RCV_RING_LEN0 0x150 /* Receive Ring0 length register */ + +#define SRAM_SIZE 0x178 /* SRAM size register */ +#define SRAM_BOUNDARY 0x17A /* SRAM boundary register */ + +/* 48bit register */ + +#define PADR 0x160 /* Physical address register */ + +#define IFS1 0x18C /* Inter-frame spacing Part1 register */ +#define IFS 0x18D /* Inter-frame spacing register */ +#define IPG 0x18E /* Inter-frame gap register */ +/* 64bit register */ + +#define LADRF 0x168 /* Logical address filter register */ + + +/* Register Bit Definitions */ +typedef enum { + + ASF_INIT_DONE = (1 << 1), + ASF_INIT_PRESENT = (1 << 0), + +}STAT_ASF_BITS; + +typedef enum { + + MIB_CMD_ACTIVE = (1 << 15 ), + MIB_RD_CMD = (1 << 13 ), + MIB_CLEAR = (1 << 12 ), + MIB_ADDRESS = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3)| + (1 << 4) | (1 << 5), +}MIB_ADDR_BITS; + + +typedef enum { + + PMAT_DET = (1 << 12), + MP_DET = (1 << 11), + LC_DET = (1 << 10), + SPEED_MASK = (1 << 9)|(1 << 8)|(1 << 7), + FULL_DPLX = (1 << 6), + LINK_STATS = (1 << 5), + AUTONEG_COMPLETE = (1 << 4), + MIIPD = (1 << 3), + RX_SUSPENDED = (1 << 2), + TX_SUSPENDED = (1 << 1), + RUNNING = (1 << 0), + +}STAT0_BITS; + +#define PHY_SPEED_10 0x2 +#define PHY_SPEED_100 0x3 + +/* INT0 0x38, 32bit register */ +typedef enum { + + INTR = (1 << 31), + PCSINT = (1 << 28), + LCINT = (1 << 27), + APINT5 = (1 << 26), + APINT4 = (1 << 25), + APINT3 = (1 << 24), + TINT_SUM = (1 << 23), + APINT2 = (1 << 22), + APINT1 = (1 << 21), + APINT0 = (1 << 20), + MIIPDTINT = (1 << 19), + MCCINT = (1 << 17), + MREINT = (1 << 16), + RINT_SUM = (1 << 15), + SPNDINT = (1 << 14), + MPINT = (1 << 13), + SINT = (1 << 12), + TINT3 = (1 << 11), + TINT2 = (1 << 10), + TINT1 = (1 << 9), + TINT0 = (1 << 8), + UINT = (1 << 7), + STINT = (1 << 4), + RINT0 = (1 << 0), + +}INT0_BITS; + +typedef enum { + + VAL3 = (1 << 31), /* VAL bit for byte 3 */ + VAL2 = (1 << 23), /* VAL bit for byte 2 */ + VAL1 = (1 << 15), /* VAL bit for byte 1 */ + VAL0 = (1 << 7), /* VAL bit for byte 0 */ + +}VAL_BITS; + +typedef enum { + + /* VAL3 */ + LCINTEN = (1 << 27), + APINT5EN = (1 << 26), + APINT4EN = (1 << 25), + APINT3EN = (1 << 24), + /* VAL2 */ + APINT2EN = (1 << 22), + APINT1EN = (1 << 21), + APINT0EN = (1 << 20), + MIIPDTINTEN = (1 << 19), + MCCIINTEN = (1 << 18), + MCCINTEN = (1 << 17), + MREINTEN = (1 << 16), + /* VAL1 */ + SPNDINTEN = (1 << 14), + MPINTEN = (1 << 13), + TINTEN3 = (1 << 11), + SINTEN = (1 << 12), + TINTEN2 = (1 << 10), + TINTEN1 = (1 << 9), + TINTEN0 = (1 << 8), + /* VAL0 */ + STINTEN = (1 << 4), + RINTEN0 = (1 << 0), + + INTEN0_CLEAR = 0x1F7F7F1F, /* Command style register */ + +}INTEN0_BITS; + +typedef enum { + /* VAL2 */ + RDMD0 = (1 << 16), + /* VAL1 */ + TDMD3 = (1 << 11), + TDMD2 = (1 << 10), + TDMD1 = (1 << 9), + TDMD0 = (1 << 8), + /* VAL0 */ + UINTCMD = (1 << 6), + RX_FAST_SPND = (1 << 5), + TX_FAST_SPND = (1 << 4), + RX_SPND = (1 << 3), + TX_SPND = (1 << 2), + INTREN = (1 << 1), + RUN = (1 << 0), + + CMD0_CLEAR = 0x000F0F7F, /* Command style register */ + +}CMD0_BITS; + +typedef enum { + + /* VAL3 */ + CONDUIT_MODE = (1 << 29), + /* VAL2 */ + RPA = (1 << 19), + DRCVPA = (1 << 18), + DRCVBC = (1 << 17), + PROM = (1 << 16), + /* VAL1 */ + ASTRP_RCV = (1 << 13), + RCV_DROP0 = (1 << 12), + EMBA = (1 << 11), + DXMT2PD = (1 << 10), + LTINTEN = (1 << 9), + DXMTFCS = (1 << 8), + /* VAL0 */ + APAD_XMT = (1 << 6), + DRTY = (1 << 5), + INLOOP = (1 << 4), + EXLOOP = (1 << 3), + REX_RTRY = (1 << 2), + REX_UFLO = (1 << 1), + REX_LCOL = (1 << 0), + + CMD2_CLEAR = 0x3F7F3F7F, /* Command style register */ + +}CMD2_BITS; + +typedef enum { + + /* VAL3 */ + ASF_INIT_DONE_ALIAS = (1 << 29), + /* VAL2 */ + JUMBO = (1 << 21), + VSIZE = (1 << 20), + VLONLY = (1 << 19), + VL_TAG_DEL = (1 << 18), + /* VAL1 */ + EN_PMGR = (1 << 14), + INTLEVEL = (1 << 13), + FORCE_FULL_DUPLEX = (1 << 12), + FORCE_LINK_STATUS = (1 << 11), + APEP = (1 << 10), + MPPLBA = (1 << 9), + /* VAL0 */ + RESET_PHY_PULSE = (1 << 2), + RESET_PHY = (1 << 1), + PHY_RST_POL = (1 << 0), + +}CMD3_BITS; + + +typedef enum { + + /* VAL0 */ + PMAT_SAVE_MATCH = (1 << 4), + PMAT_MODE = (1 << 3), + MPEN_SW = (1 << 1), + LCMODE_SW = (1 << 0), + + CMD7_CLEAR = 0x0000001B /* Command style register */ + +}CMD7_BITS; + + +typedef enum { + + RESET_PHY_WIDTH = (0xF << 16) | (0xF<< 20), /* 0x00FF0000 */ + XMTSP_MASK = (1 << 9) | (1 << 8), /* 9:8 */ + XMTSP_128 = (1 << 9), /* 9 */ + XMTSP_64 = (1 << 8), + CACHE_ALIGN = (1 << 4), + BURST_LIMIT_MASK = (0xF << 0 ), + CTRL1_DEFAULT = 0x00010111, + +}CTRL1_BITS; + +typedef enum { + + FMDC_MASK = (1 << 9)|(1 << 8), /* 9:8 */ + XPHYRST = (1 << 7), + XPHYANE = (1 << 6), + XPHYFD = (1 << 5), + XPHYSP = (1 << 4) | (1 << 3), /* 4:3 */ + APDW_MASK = (1 << 2) | (1 << 1) | (1 << 0), /* 2:0 */ + +}CTRL2_BITS; + +/* XMT_RING_LIMIT 0x7C, 32bit register */ +typedef enum { + + XMT_RING2_LIMIT = (0xFF << 16), /* 23:16 */ + XMT_RING1_LIMIT = (0xFF << 8), /* 15:8 */ + XMT_RING0_LIMIT = (0xFF << 0), /* 7:0 */ + +}XMT_RING_LIMIT_BITS; + +typedef enum { + + AP_REG0_EN = (1 << 15), + AP_REG0_ADDR_MASK = (0xF << 8) |(1 << 12),/* 12:8 */ + AP_PHY0_ADDR_MASK = (0xF << 0) |(1 << 4),/* 4:0 */ + +}AUTOPOLL0_BITS; + +/* AUTOPOLL1 0x8A, 16bit register */ +typedef enum { + + AP_REG1_EN = (1 << 15), + AP_REG1_ADDR_MASK = (0xF << 8) |(1 << 12),/* 12:8 */ + AP_PRE_SUP1 = (1 << 6), + AP_PHY1_DFLT = (1 << 5), + AP_PHY1_ADDR_MASK = (0xF << 0) |(1 << 4),/* 4:0 */ + +}AUTOPOLL1_BITS; + + +typedef enum { + + AP_REG2_EN = (1 << 15), + AP_REG2_ADDR_MASK = (0xF << 8) |(1 << 12),/* 12:8 */ + AP_PRE_SUP2 = (1 << 6), + AP_PHY2_DFLT = (1 << 5), + AP_PHY2_ADDR_MASK = (0xF << 0) |(1 << 4),/* 4:0 */ + +}AUTOPOLL2_BITS; + +typedef enum { + + AP_REG3_EN = (1 << 15), + AP_REG3_ADDR_MASK = (0xF << 8) |(1 << 12),/* 12:8 */ + AP_PRE_SUP3 = (1 << 6), + AP_PHY3_DFLT = (1 << 5), + AP_PHY3_ADDR_MASK = (0xF << 0) |(1 << 4),/* 4:0 */ + +}AUTOPOLL3_BITS; + + +typedef enum { + + AP_REG4_EN = (1 << 15), + AP_REG4_ADDR_MASK = (0xF << 8) |(1 << 12),/* 12:8 */ + AP_PRE_SUP4 = (1 << 6), + AP_PHY4_DFLT = (1 << 5), + AP_PHY4_ADDR_MASK = (0xF << 0) |(1 << 4),/* 4:0 */ + +}AUTOPOLL4_BITS; + + +typedef enum { + + AP_REG5_EN = (1 << 15), + AP_REG5_ADDR_MASK = (0xF << 8) |(1 << 12),/* 12:8 */ + AP_PRE_SUP5 = (1 << 6), + AP_PHY5_DFLT = (1 << 5), + AP_PHY5_ADDR_MASK = (0xF << 0) |(1 << 4),/* 4:0 */ + +}AUTOPOLL5_BITS; + + + + +/* AP_VALUE 0x98, 32bit ragister */ +typedef enum { + + AP_VAL_ACTIVE = (1 << 31), + AP_VAL_RD_CMD = ( 1 << 29), + AP_ADDR = (1 << 18)|(1 << 17)|(1 << 16), /* 18:16 */ + AP_VAL = (0xF << 0) | (0xF << 4) |( 0xF << 8) | + (0xF << 12), /* 15:0 */ + +}AP_VALUE_BITS; + +typedef enum { + + DLY_INT_A_R3 = (1 << 31), + DLY_INT_A_R2 = (1 << 30), + DLY_INT_A_R1 = (1 << 29), + DLY_INT_A_R0 = (1 << 28), + DLY_INT_A_T3 = (1 << 27), + DLY_INT_A_T2 = (1 << 26), + DLY_INT_A_T1 = (1 << 25), + DLY_INT_A_T0 = ( 1 << 24), + EVENT_COUNT_A = (0xF << 16) | (0x1 << 20),/* 20:16 */ + MAX_DELAY_TIME_A = (0xF << 0) | (0xF << 4) | (1 << 8)| + (1 << 9) | (1 << 10), /* 10:0 */ + +}DLY_INT_A_BITS; + +typedef enum { + + DLY_INT_B_R3 = (1 << 31), + DLY_INT_B_R2 = (1 << 30), + DLY_INT_B_R1 = (1 << 29), + DLY_INT_B_R0 = (1 << 28), + DLY_INT_B_T3 = (1 << 27), + DLY_INT_B_T2 = (1 << 26), + DLY_INT_B_T1 = (1 << 25), + DLY_INT_B_T0 = ( 1 << 24), + EVENT_COUNT_B = (0xF << 16) | (0x1 << 20),/* 20:16 */ + MAX_DELAY_TIME_B = (0xF << 0) | (0xF << 4) | (1 << 8)| + (1 << 9) | (1 << 10), /* 10:0 */ +}DLY_INT_B_BITS; + + +/* FLOW_CONTROL 0xC8, 32bit register */ +typedef enum { + + PAUSE_LEN_CHG = (1 << 30), + FTPE = (1 << 22), + FRPE = (1 << 21), + NAPA = (1 << 20), + NPA = (1 << 19), + FIXP = ( 1 << 18), + FCCMD = ( 1 << 16), + PAUSE_LEN = (0xF << 0) | (0xF << 4) |( 0xF << 8) | (0xF << 12), /* 15:0 */ + +}FLOW_CONTROL_BITS; + +/* PHY_ ACCESS 0xD0, 32bit register */ +typedef enum { + + PHY_CMD_ACTIVE = (1 << 31), + PHY_WR_CMD = (1 << 30), + PHY_RD_CMD = (1 << 29), + PHY_RD_ERR = (1 << 28), + PHY_PRE_SUP = (1 << 27), + PHY_ADDR = (1 << 21) | (1 << 22) | (1 << 23)| + (1 << 24) |(1 << 25),/* 25:21 */ + PHY_REG_ADDR = (1 << 16) | (1 << 17) | (1 << 18)| (1 << 19) | (1 << 20),/* 20:16 */ + PHY_DATA = (0xF << 0)|(0xF << 4) |(0xF << 8)| + (0xF << 12),/* 15:0 */ + +}PHY_ACCESS_BITS; + + +/* PMAT0 0x190, 32bit register */ +typedef enum { + PMR_ACTIVE = (1 << 31), + PMR_WR_CMD = (1 << 30), + PMR_RD_CMD = (1 << 29), + PMR_BANK = (1 <<28), + PMR_ADDR = (0xF << 16)|(1 << 20)|(1 << 21)| + (1 << 22),/* 22:16 */ + PMR_B4 = (0xF << 0) | (0xF << 4),/* 15:0 */ +}PMAT0_BITS; + + +/* PMAT1 0x194, 32bit register */ +typedef enum { + PMR_B3 = (0xF << 24) | (0xF <<28),/* 31:24 */ + PMR_B2 = (0xF << 16) |(0xF << 20),/* 23:16 */ + PMR_B1 = (0xF << 8) | (0xF <<12), /* 15:8 */ + PMR_B0 = (0xF << 0)|(0xF << 4),/* 7:0 */ +}PMAT1_BITS; + +/************************************************************************/ +/* */ +/* MIB counter definitions */ +/* */ +/************************************************************************/ + +#define rcv_miss_pkts 0x00 +#define rcv_octets 0x01 +#define rcv_broadcast_pkts 0x02 +#define rcv_multicast_pkts 0x03 +#define rcv_undersize_pkts 0x04 +#define rcv_oversize_pkts 0x05 +#define rcv_fragments 0x06 +#define rcv_jabbers 0x07 +#define rcv_unicast_pkts 0x08 +#define rcv_alignment_errors 0x09 +#define rcv_fcs_errors 0x0A +#define rcv_good_octets 0x0B +#define rcv_mac_ctrl 0x0C +#define rcv_flow_ctrl 0x0D +#define rcv_pkts_64_octets 0x0E +#define rcv_pkts_65to127_octets 0x0F +#define rcv_pkts_128to255_octets 0x10 +#define rcv_pkts_256to511_octets 0x11 +#define rcv_pkts_512to1023_octets 0x12 +#define rcv_pkts_1024to1518_octets 0x13 +#define rcv_unsupported_opcode 0x14 +#define rcv_symbol_errors 0x15 +#define rcv_drop_pkts_ring1 0x16 +#define rcv_drop_pkts_ring2 0x17 +#define rcv_drop_pkts_ring3 0x18 +#define rcv_drop_pkts_ring4 0x19 +#define rcv_jumbo_pkts 0x1A + +#define xmt_underrun_pkts 0x20 +#define xmt_octets 0x21 +#define xmt_packets 0x22 +#define xmt_broadcast_pkts 0x23 +#define xmt_multicast_pkts 0x24 +#define xmt_collisions 0x25 +#define xmt_unicast_pkts 0x26 +#define xmt_one_collision 0x27 +#define xmt_multiple_collision 0x28 +#define xmt_deferred_transmit 0x29 +#define xmt_late_collision 0x2A +#define xmt_excessive_defer 0x2B +#define xmt_loss_carrier 0x2C +#define xmt_excessive_collision 0x2D +#define xmt_back_pressure 0x2E +#define xmt_flow_ctrl 0x2F +#define xmt_pkts_64_octets 0x30 +#define xmt_pkts_65to127_octets 0x31 +#define xmt_pkts_128to255_octets 0x32 +#define xmt_pkts_256to511_octets 0x33 +#define xmt_pkts_512to1023_octets 0x34 +#define xmt_pkts_1024to1518_octet 0x35 +#define xmt_oversize_pkts 0x36 +#define xmt_jumbo_pkts 0x37 + + +/* Driver definitions */ + +#define PCI_VENDOR_ID_AMD 0x1022 +#define PCI_DEVICE_ID_AMD8111E_7462 0x7462 + +#define MAX_UNITS 8 /* Maximum number of devices possible */ + +#define NUM_TX_BUFFERS 32 /* Number of transmit buffers */ +#define NUM_RX_BUFFERS 32 /* Number of receive buffers */ + +#define TX_BUFF_MOD_MASK 31 /* (NUM_TX_BUFFERS -1) */ +#define RX_BUFF_MOD_MASK 31 /* (NUM_RX_BUFFERS -1) */ + +#define NUM_TX_RING_DR 32 +#define NUM_RX_RING_DR 32 + +#define TX_RING_DR_MOD_MASK 31 /* (NUM_TX_RING_DR -1) */ +#define RX_RING_DR_MOD_MASK 31 /* (NUM_RX_RING_DR -1) */ + +#define MAX_FILTER_SIZE 64 /* Maximum multicast address */ +#define AMD8111E_MIN_MTU 60 +#define AMD8111E_MAX_MTU 9000 + +#define PKT_BUFF_SZ 1536 +#define MIN_PKT_LEN 60 +#define ETH_ADDR_LEN 6 + +#define AMD8111E_TX_TIMEOUT (3 * HZ)/* 3 sec */ +#define SOFT_TIMER_FREQ 0xBEBC /* 0.5 sec */ +#define DELAY_TIMER_CONV 50 /* msec to 10 usec conversion. + Only 500 usec resolution */ +#define OPTION_VLAN_ENABLE 0x0001 +#define OPTION_JUMBO_ENABLE 0x0002 +#define OPTION_MULTICAST_ENABLE 0x0004 +#define OPTION_WOL_ENABLE 0x0008 +#define OPTION_WAKE_MAGIC_ENABLE 0x0010 +#define OPTION_WAKE_PHY_ENABLE 0x0020 +#define OPTION_INTR_COAL_ENABLE 0x0040 +#define OPTION_DYN_IPG_ENABLE 0x0080 + +#define PHY_REG_ADDR_MASK 0x1f + +/* ipg parameters */ +#define DEFAULT_IPG 0x60 +#define IFS1_DELTA 36 +#define IPG_CONVERGE_JIFFIES (HZ/2) +#define IPG_STABLE_TIME 5 +#define MIN_IPG 96 +#define MAX_IPG 255 +#define IPG_STEP 16 +#define CSTATE 1 +#define SSTATE 2 + +/* Assume contoller gets data 10 times the maximum processing time */ +#define REPEAT_CNT 10 + +/* amd8111e decriptor flag definitions */ +typedef enum { + + OWN_BIT = (1 << 15), + ADD_FCS_BIT = (1 << 13), + LTINT_BIT = (1 << 12), + STP_BIT = (1 << 9), + ENP_BIT = (1 << 8), + KILL_BIT = (1 << 6), + TCC_VLAN_INSERT = (1 << 1), + TCC_VLAN_REPLACE = (1 << 1) |( 1<< 0), + +}TX_FLAG_BITS; + +typedef enum { + ERR_BIT = (1 << 14), + FRAM_BIT = (1 << 13), + OFLO_BIT = (1 << 12), + CRC_BIT = (1 << 11), + PAM_BIT = (1 << 6), + LAFM_BIT = (1 << 5), + BAM_BIT = (1 << 4), + TT_VLAN_TAGGED = (1 << 3) |(1 << 2),/* 0x000 */ + TT_PRTY_TAGGED = (1 << 3),/* 0x0008 */ + +}RX_FLAG_BITS; + +#define RESET_RX_FLAGS 0x0000 +#define TT_MASK 0x000c +#define TCC_MASK 0x0003 + +/* driver ioctl parameters */ +#define AMD8111E_REG_DUMP_LEN 13*sizeof(u32) + +/* amd8111e desriptor format */ + +struct amd8111e_tx_dr{ + + __le16 buff_count; /* Size of the buffer pointed by this descriptor */ + + __le16 tx_flags; + + __le16 tag_ctrl_info; + + __le16 tag_ctrl_cmd; + + __le32 buff_phy_addr; + + __le32 reserved; +}; + +struct amd8111e_rx_dr{ + + __le32 reserved; + + __le16 msg_count; /* Received message len */ + + __le16 tag_ctrl_info; + + __le16 buff_count; /* Len of the buffer pointed by descriptor. */ + + __le16 rx_flags; + + __le32 buff_phy_addr; + +}; +struct amd8111e_link_config{ + +#define SPEED_INVALID 0xffff +#define DUPLEX_INVALID 0xff +#define AUTONEG_INVALID 0xff + + unsigned long orig_phy_option; + u16 speed; + u8 duplex; + u8 autoneg; + u8 reserved; /* 32bit alignment */ +}; + +enum coal_type{ + + NO_COALESCE, + LOW_COALESCE, + MEDIUM_COALESCE, + HIGH_COALESCE, + +}; + +enum coal_mode{ + RX_INTR_COAL, + TX_INTR_COAL, + DISABLE_COAL, + ENABLE_COAL, + +}; +#define MAX_TIMEOUT 40 +#define MAX_EVENT_COUNT 31 +struct amd8111e_coalesce_conf{ + + unsigned int rx_timeout; + unsigned int rx_event_count; + unsigned long rx_packets; + unsigned long rx_prev_packets; + unsigned long rx_bytes; + unsigned long rx_prev_bytes; + unsigned int rx_coal_type; + + unsigned int tx_timeout; + unsigned int tx_event_count; + unsigned long tx_packets; + unsigned long tx_prev_packets; + unsigned long tx_bytes; + unsigned long tx_prev_bytes; + unsigned int tx_coal_type; + +}; +struct ipg_info{ + + unsigned int ipg_state; + unsigned int ipg; + unsigned int current_ipg; + unsigned int col_cnt; + unsigned int diff_col_cnt; + unsigned int timer_tick; + unsigned int prev_ipg; + struct timer_list ipg_timer; +}; + +struct amd8111e_priv{ + + struct amd8111e_tx_dr* tx_ring; + struct amd8111e_rx_dr* rx_ring; + dma_addr_t tx_ring_dma_addr; /* tx descriptor ring base address */ + dma_addr_t rx_ring_dma_addr; /* rx descriptor ring base address */ + const char *name; + struct pci_dev *pci_dev; /* Ptr to the associated pci_dev */ + struct net_device* amd8111e_net_dev; /* ptr to associated net_device */ + /* Transmit and recive skbs */ + struct sk_buff *tx_skbuff[NUM_TX_BUFFERS]; + struct sk_buff *rx_skbuff[NUM_RX_BUFFERS]; + /* Transmit and receive dma mapped addr */ + dma_addr_t tx_dma_addr[NUM_TX_BUFFERS]; + dma_addr_t rx_dma_addr[NUM_RX_BUFFERS]; + /* Reg memory mapped address */ + void __iomem *mmio; + + struct napi_struct napi; + + spinlock_t lock; /* Guard lock */ + unsigned long rx_idx, tx_idx; /* The next free ring entry */ + unsigned long tx_complete_idx; + unsigned long tx_ring_complete_idx; + unsigned long tx_ring_idx; + unsigned int rx_buff_len; /* Buffer length of rx buffers */ + int options; /* Options enabled/disabled for the device */ + + unsigned long ext_phy_option; + int ext_phy_addr; + u32 ext_phy_id; + + struct amd8111e_link_config link_config; + int pm_cap; + + struct net_device *next; + int mii; + struct mii_if_info mii_if; + char opened; + unsigned int drv_rx_errors; + struct amd8111e_coalesce_conf coal_conf; + + struct ipg_info ipg_data; + +}; + +/* kernel provided writeq does not write 64 bits into the amd8111e device register instead writes only higher 32bits data into lower 32bits of the register. +BUG? */ +#define amd8111e_writeq(_UlData,_memMap) \ + writel(*(u32*)(&_UlData), _memMap); \ + writel(*(u32*)((u8*)(&_UlData)+4), _memMap+4) + +/* maps the external speed options to internal value */ +typedef enum { + SPEED_AUTONEG, + SPEED10_HALF, + SPEED10_FULL, + SPEED100_HALF, + SPEED100_FULL, +}EXT_PHY_OPTION; + +static int card_idx; +static int speed_duplex[MAX_UNITS] = { 0, }; +static int coalesce[MAX_UNITS] = {1,1,1,1,1,1,1,1}; +static int dynamic_ipg[MAX_UNITS] = {0,0,0,0,0,0,0,0}; +static unsigned int chip_version; + +#endif /* _AMD8111E_H */ + diff --git a/drivers/net/ethernet/amd/ariadne.c b/drivers/net/ethernet/amd/ariadne.c new file mode 100644 index 000000000000..eb18e1fe65c8 --- /dev/null +++ b/drivers/net/ethernet/amd/ariadne.c @@ -0,0 +1,793 @@ +/* + * Amiga Linux/m68k Ariadne Ethernet Driver + * + * © Copyright 1995-2003 by Geert Uytterhoeven (geert@linux-m68k.org) + * Peter De Schrijver (p2@mind.be) + * + * --------------------------------------------------------------------------- + * + * This program is based on + * + * lance.c: An AMD LANCE ethernet driver for linux. + * Written 1993-94 by Donald Becker. + * + * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller + * Advanced Micro Devices + * Publication #16907, Rev. B, Amendment/0, May 1994 + * + * MC68230: Parallel Interface/Timer (PI/T) + * Motorola Semiconductors, December, 1983 + * + * --------------------------------------------------------------------------- + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of the Linux + * distribution for more details. + * + * --------------------------------------------------------------------------- + * + * The Ariadne is a Zorro-II board made by Village Tronic. It contains: + * + * - an Am79C960 PCnet-ISA Single-Chip Ethernet Controller with both + * 10BASE-2 (thin coax) and 10BASE-T (UTP) connectors + * + * - an MC68230 Parallel Interface/Timer configured as 2 parallel ports + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +/*#define DEBUG*/ + +#include <linux/module.h> +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/interrupt.h> +#include <linux/skbuff.h> +#include <linux/init.h> +#include <linux/zorro.h> +#include <linux/bitops.h> + +#include <asm/amigaints.h> +#include <asm/amigahw.h> +#include <asm/irq.h> + +#include "ariadne.h" + +#ifdef ARIADNE_DEBUG +int ariadne_debug = ARIADNE_DEBUG; +#else +int ariadne_debug = 1; +#endif + +/* Macros to Fix Endianness problems */ + +/* Swap the Bytes in a WORD */ +#define swapw(x) (((x >> 8) & 0x00ff) | ((x << 8) & 0xff00)) +/* Get the Low BYTE in a WORD */ +#define lowb(x) (x & 0xff) +/* Get the Swapped High WORD in a LONG */ +#define swhighw(x) ((((x) >> 8) & 0xff00) | (((x) >> 24) & 0x00ff)) +/* Get the Swapped Low WORD in a LONG */ +#define swloww(x) ((((x) << 8) & 0xff00) | (((x) >> 8) & 0x00ff)) + +/* Transmit/Receive Ring Definitions */ + +#define TX_RING_SIZE 5 +#define RX_RING_SIZE 16 + +#define PKT_BUF_SIZE 1520 + +/* Private Device Data */ + +struct ariadne_private { + volatile struct TDRE *tx_ring[TX_RING_SIZE]; + volatile struct RDRE *rx_ring[RX_RING_SIZE]; + volatile u_short *tx_buff[TX_RING_SIZE]; + volatile u_short *rx_buff[RX_RING_SIZE]; + int cur_tx, cur_rx; /* The next free ring entry */ + int dirty_tx; /* The ring entries to be free()ed */ + char tx_full; +}; + +/* Structure Created in the Ariadne's RAM Buffer */ + +struct lancedata { + struct TDRE tx_ring[TX_RING_SIZE]; + struct RDRE rx_ring[RX_RING_SIZE]; + u_short tx_buff[TX_RING_SIZE][PKT_BUF_SIZE / sizeof(u_short)]; + u_short rx_buff[RX_RING_SIZE][PKT_BUF_SIZE / sizeof(u_short)]; +}; + +static void memcpyw(volatile u_short *dest, u_short *src, int len) +{ + while (len >= 2) { + *(dest++) = *(src++); + len -= 2; + } + if (len == 1) + *dest = (*(u_char *)src) << 8; +} + +static void ariadne_init_ring(struct net_device *dev) +{ + struct ariadne_private *priv = netdev_priv(dev); + volatile struct lancedata *lancedata = (struct lancedata *)dev->mem_start; + int i; + + netif_stop_queue(dev); + + priv->tx_full = 0; + priv->cur_rx = priv->cur_tx = 0; + priv->dirty_tx = 0; + + /* Set up TX Ring */ + for (i = 0; i < TX_RING_SIZE; i++) { + volatile struct TDRE *t = &lancedata->tx_ring[i]; + t->TMD0 = swloww(ARIADNE_RAM + + offsetof(struct lancedata, tx_buff[i])); + t->TMD1 = swhighw(ARIADNE_RAM + + offsetof(struct lancedata, tx_buff[i])) | + TF_STP | TF_ENP; + t->TMD2 = swapw((u_short)-PKT_BUF_SIZE); + t->TMD3 = 0; + priv->tx_ring[i] = &lancedata->tx_ring[i]; + priv->tx_buff[i] = lancedata->tx_buff[i]; + netdev_dbg(dev, "TX Entry %2d at %p, Buf at %p\n", + i, &lancedata->tx_ring[i], lancedata->tx_buff[i]); + } + + /* Set up RX Ring */ + for (i = 0; i < RX_RING_SIZE; i++) { + volatile struct RDRE *r = &lancedata->rx_ring[i]; + r->RMD0 = swloww(ARIADNE_RAM + + offsetof(struct lancedata, rx_buff[i])); + r->RMD1 = swhighw(ARIADNE_RAM + + offsetof(struct lancedata, rx_buff[i])) | + RF_OWN; + r->RMD2 = swapw((u_short)-PKT_BUF_SIZE); + r->RMD3 = 0x0000; + priv->rx_ring[i] = &lancedata->rx_ring[i]; + priv->rx_buff[i] = lancedata->rx_buff[i]; + netdev_dbg(dev, "RX Entry %2d at %p, Buf at %p\n", + i, &lancedata->rx_ring[i], lancedata->rx_buff[i]); + } +} + +static int ariadne_rx(struct net_device *dev) +{ + struct ariadne_private *priv = netdev_priv(dev); + int entry = priv->cur_rx % RX_RING_SIZE; + int i; + + /* If we own the next entry, it's a new packet. Send it up */ + while (!(lowb(priv->rx_ring[entry]->RMD1) & RF_OWN)) { + int status = lowb(priv->rx_ring[entry]->RMD1); + + if (status != (RF_STP | RF_ENP)) { /* There was an error */ + /* There is a tricky error noted by + * John Murphy <murf@perftech.com> to Russ Nelson: + * Even with full-sized buffers it's possible for a + * jabber packet to use two buffers, with only the + * last correctly noting the error + */ + /* Only count a general error at the end of a packet */ + if (status & RF_ENP) + dev->stats.rx_errors++; + if (status & RF_FRAM) + dev->stats.rx_frame_errors++; + if (status & RF_OFLO) + dev->stats.rx_over_errors++; + if (status & RF_CRC) + dev->stats.rx_crc_errors++; + if (status & RF_BUFF) + dev->stats.rx_fifo_errors++; + priv->rx_ring[entry]->RMD1 &= 0xff00 | RF_STP | RF_ENP; + } else { + /* Malloc up new buffer, compatible with net-3 */ + short pkt_len = swapw(priv->rx_ring[entry]->RMD3); + struct sk_buff *skb; + + skb = dev_alloc_skb(pkt_len + 2); + if (skb == NULL) { + netdev_warn(dev, "Memory squeeze, deferring packet\n"); + for (i = 0; i < RX_RING_SIZE; i++) + if (lowb(priv->rx_ring[(entry + i) % RX_RING_SIZE]->RMD1) & RF_OWN) + break; + + if (i > RX_RING_SIZE - 2) { + dev->stats.rx_dropped++; + priv->rx_ring[entry]->RMD1 |= RF_OWN; + priv->cur_rx++; + } + break; + } + + + skb_reserve(skb, 2); /* 16 byte align */ + skb_put(skb, pkt_len); /* Make room */ + skb_copy_to_linear_data(skb, + (const void *)priv->rx_buff[entry], + pkt_len); + skb->protocol = eth_type_trans(skb, dev); + netdev_dbg(dev, "RX pkt type 0x%04x from %pM to %pM data 0x%08x len %d\n", + ((u_short *)skb->data)[6], + skb->data + 6, skb->data, + (int)skb->data, (int)skb->len); + + netif_rx(skb); + dev->stats.rx_packets++; + dev->stats.rx_bytes += pkt_len; + } + + priv->rx_ring[entry]->RMD1 |= RF_OWN; + entry = (++priv->cur_rx) % RX_RING_SIZE; + } + + priv->cur_rx = priv->cur_rx % RX_RING_SIZE; + + /* We should check that at least two ring entries are free. + * If not, we should free one and mark stats->rx_dropped++ + */ + + return 0; +} + +static irqreturn_t ariadne_interrupt(int irq, void *data) +{ + struct net_device *dev = (struct net_device *)data; + volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr; + struct ariadne_private *priv; + int csr0, boguscnt; + int handled = 0; + + lance->RAP = CSR0; /* PCnet-ISA Controller Status */ + + if (!(lance->RDP & INTR)) /* Check if any interrupt has been */ + return IRQ_NONE; /* generated by the board */ + + priv = netdev_priv(dev); + + boguscnt = 10; + while ((csr0 = lance->RDP) & (ERR | RINT | TINT) && --boguscnt >= 0) { + /* Acknowledge all of the current interrupt sources ASAP */ + lance->RDP = csr0 & ~(INEA | TDMD | STOP | STRT | INIT); + +#ifdef DEBUG + if (ariadne_debug > 5) { + netdev_dbg(dev, "interrupt csr0=%#02x new csr=%#02x [", + csr0, lance->RDP); + if (csr0 & INTR) + pr_cont(" INTR"); + if (csr0 & INEA) + pr_cont(" INEA"); + if (csr0 & RXON) + pr_cont(" RXON"); + if (csr0 & TXON) + pr_cont(" TXON"); + if (csr0 & TDMD) + pr_cont(" TDMD"); + if (csr0 & STOP) + pr_cont(" STOP"); + if (csr0 & STRT) + pr_cont(" STRT"); + if (csr0 & INIT) + pr_cont(" INIT"); + if (csr0 & ERR) + pr_cont(" ERR"); + if (csr0 & BABL) + pr_cont(" BABL"); + if (csr0 & CERR) + pr_cont(" CERR"); + if (csr0 & MISS) + pr_cont(" MISS"); + if (csr0 & MERR) + pr_cont(" MERR"); + if (csr0 & RINT) + pr_cont(" RINT"); + if (csr0 & TINT) + pr_cont(" TINT"); + if (csr0 & IDON) + pr_cont(" IDON"); + pr_cont(" ]\n"); + } +#endif + + if (csr0 & RINT) { /* Rx interrupt */ + handled = 1; + ariadne_rx(dev); + } + + if (csr0 & TINT) { /* Tx-done interrupt */ + int dirty_tx = priv->dirty_tx; + + handled = 1; + while (dirty_tx < priv->cur_tx) { + int entry = dirty_tx % TX_RING_SIZE; + int status = lowb(priv->tx_ring[entry]->TMD1); + + if (status & TF_OWN) + break; /* It still hasn't been Txed */ + + priv->tx_ring[entry]->TMD1 &= 0xff00; + + if (status & TF_ERR) { + /* There was an major error, log it */ + int err_status = priv->tx_ring[entry]->TMD3; + dev->stats.tx_errors++; + if (err_status & EF_RTRY) + dev->stats.tx_aborted_errors++; + if (err_status & EF_LCAR) + dev->stats.tx_carrier_errors++; + if (err_status & EF_LCOL) + dev->stats.tx_window_errors++; + if (err_status & EF_UFLO) { + /* Ackk! On FIFO errors the Tx unit is turned off! */ + dev->stats.tx_fifo_errors++; + /* Remove this verbosity later! */ + netdev_err(dev, "Tx FIFO error! Status %04x\n", + csr0); + /* Restart the chip */ + lance->RDP = STRT; + } + } else { + if (status & (TF_MORE | TF_ONE)) + dev->stats.collisions++; + dev->stats.tx_packets++; + } + dirty_tx++; + } + +#ifndef final_version + if (priv->cur_tx - dirty_tx >= TX_RING_SIZE) { + netdev_err(dev, "out-of-sync dirty pointer, %d vs. %d, full=%d\n", + dirty_tx, priv->cur_tx, + priv->tx_full); + dirty_tx += TX_RING_SIZE; + } +#endif + + if (priv->tx_full && netif_queue_stopped(dev) && + dirty_tx > priv->cur_tx - TX_RING_SIZE + 2) { + /* The ring is no longer full */ + priv->tx_full = 0; + netif_wake_queue(dev); + } + + priv->dirty_tx = dirty_tx; + } + + /* Log misc errors */ + if (csr0 & BABL) { + handled = 1; + dev->stats.tx_errors++; /* Tx babble */ + } + if (csr0 & MISS) { + handled = 1; + dev->stats.rx_errors++; /* Missed a Rx frame */ + } + if (csr0 & MERR) { + handled = 1; + netdev_err(dev, "Bus master arbitration failure, status %04x\n", + csr0); + /* Restart the chip */ + lance->RDP = STRT; + } + } + + /* Clear any other interrupt, and set interrupt enable */ + lance->RAP = CSR0; /* PCnet-ISA Controller Status */ + lance->RDP = INEA | BABL | CERR | MISS | MERR | IDON; + + if (ariadne_debug > 4) + netdev_dbg(dev, "exiting interrupt, csr%d=%#04x\n", + lance->RAP, lance->RDP); + + return IRQ_RETVAL(handled); +} + +static int ariadne_open(struct net_device *dev) +{ + volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr; + u_short in; + u_long version; + int i; + + /* Reset the LANCE */ + in = lance->Reset; + + /* Stop the LANCE */ + lance->RAP = CSR0; /* PCnet-ISA Controller Status */ + lance->RDP = STOP; + + /* Check the LANCE version */ + lance->RAP = CSR88; /* Chip ID */ + version = swapw(lance->RDP); + lance->RAP = CSR89; /* Chip ID */ + version |= swapw(lance->RDP) << 16; + if ((version & 0x00000fff) != 0x00000003) { + pr_warn("Couldn't find AMD Ethernet Chip\n"); + return -EAGAIN; + } + if ((version & 0x0ffff000) != 0x00003000) { + pr_warn("Couldn't find Am79C960 (Wrong part number = %ld)\n", + (version & 0x0ffff000) >> 12); + return -EAGAIN; + } + + netdev_dbg(dev, "Am79C960 (PCnet-ISA) Revision %ld\n", + (version & 0xf0000000) >> 28); + + ariadne_init_ring(dev); + + /* Miscellaneous Stuff */ + lance->RAP = CSR3; /* Interrupt Masks and Deferral Control */ + lance->RDP = 0x0000; + lance->RAP = CSR4; /* Test and Features Control */ + lance->RDP = DPOLL | APAD_XMT | MFCOM | RCVCCOM | TXSTRTM | JABM; + + /* Set the Multicast Table */ + lance->RAP = CSR8; /* Logical Address Filter, LADRF[15:0] */ + lance->RDP = 0x0000; + lance->RAP = CSR9; /* Logical Address Filter, LADRF[31:16] */ + lance->RDP = 0x0000; + lance->RAP = CSR10; /* Logical Address Filter, LADRF[47:32] */ + lance->RDP = 0x0000; + lance->RAP = CSR11; /* Logical Address Filter, LADRF[63:48] */ + lance->RDP = 0x0000; + + /* Set the Ethernet Hardware Address */ + lance->RAP = CSR12; /* Physical Address Register, PADR[15:0] */ + lance->RDP = ((u_short *)&dev->dev_addr[0])[0]; + lance->RAP = CSR13; /* Physical Address Register, PADR[31:16] */ + lance->RDP = ((u_short *)&dev->dev_addr[0])[1]; + lance->RAP = CSR14; /* Physical Address Register, PADR[47:32] */ + lance->RDP = ((u_short *)&dev->dev_addr[0])[2]; + + /* Set the Init Block Mode */ + lance->RAP = CSR15; /* Mode Register */ + lance->RDP = 0x0000; + + /* Set the Transmit Descriptor Ring Pointer */ + lance->RAP = CSR30; /* Base Address of Transmit Ring */ + lance->RDP = swloww(ARIADNE_RAM + offsetof(struct lancedata, tx_ring)); + lance->RAP = CSR31; /* Base Address of transmit Ring */ + lance->RDP = swhighw(ARIADNE_RAM + offsetof(struct lancedata, tx_ring)); + + /* Set the Receive Descriptor Ring Pointer */ + lance->RAP = CSR24; /* Base Address of Receive Ring */ + lance->RDP = swloww(ARIADNE_RAM + offsetof(struct lancedata, rx_ring)); + lance->RAP = CSR25; /* Base Address of Receive Ring */ + lance->RDP = swhighw(ARIADNE_RAM + offsetof(struct lancedata, rx_ring)); + + /* Set the Number of RX and TX Ring Entries */ + lance->RAP = CSR76; /* Receive Ring Length */ + lance->RDP = swapw(((u_short)-RX_RING_SIZE)); + lance->RAP = CSR78; /* Transmit Ring Length */ + lance->RDP = swapw(((u_short)-TX_RING_SIZE)); + + /* Enable Media Interface Port Auto Select (10BASE-2/10BASE-T) */ + lance->RAP = ISACSR2; /* Miscellaneous Configuration */ + lance->IDP = ASEL; + + /* LED Control */ + lance->RAP = ISACSR5; /* LED1 Status */ + lance->IDP = PSE|XMTE; + lance->RAP = ISACSR6; /* LED2 Status */ + lance->IDP = PSE|COLE; + lance->RAP = ISACSR7; /* LED3 Status */ + lance->IDP = PSE|RCVE; + + netif_start_queue(dev); + + i = request_irq(IRQ_AMIGA_PORTS, ariadne_interrupt, IRQF_SHARED, + dev->name, dev); + if (i) + return i; + + lance->RAP = CSR0; /* PCnet-ISA Controller Status */ + lance->RDP = INEA | STRT; + + return 0; +} + +static int ariadne_close(struct net_device *dev) +{ + volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr; + + netif_stop_queue(dev); + + lance->RAP = CSR112; /* Missed Frame Count */ + dev->stats.rx_missed_errors = swapw(lance->RDP); + lance->RAP = CSR0; /* PCnet-ISA Controller Status */ + + if (ariadne_debug > 1) { + netdev_dbg(dev, "Shutting down ethercard, status was %02x\n", + lance->RDP); + netdev_dbg(dev, "%lu packets missed\n", + dev->stats.rx_missed_errors); + } + + /* We stop the LANCE here -- it occasionally polls memory if we don't */ + lance->RDP = STOP; + + free_irq(IRQ_AMIGA_PORTS, dev); + + return 0; +} + +static inline void ariadne_reset(struct net_device *dev) +{ + volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr; + + lance->RAP = CSR0; /* PCnet-ISA Controller Status */ + lance->RDP = STOP; + ariadne_init_ring(dev); + lance->RDP = INEA | STRT; + netif_start_queue(dev); +} + +static void ariadne_tx_timeout(struct net_device *dev) +{ + volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr; + + netdev_err(dev, "transmit timed out, status %04x, resetting\n", + lance->RDP); + ariadne_reset(dev); + netif_wake_queue(dev); +} + +static netdev_tx_t ariadne_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct ariadne_private *priv = netdev_priv(dev); + volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr; + int entry; + unsigned long flags; + int len = skb->len; + +#if 0 + if (ariadne_debug > 3) { + lance->RAP = CSR0; /* PCnet-ISA Controller Status */ + netdev_dbg(dev, "%s: csr0 %04x\n", __func__, lance->RDP); + lance->RDP = 0x0000; + } +#endif + + /* FIXME: is the 79C960 new enough to do its own padding right ? */ + if (skb->len < ETH_ZLEN) { + if (skb_padto(skb, ETH_ZLEN)) + return NETDEV_TX_OK; + len = ETH_ZLEN; + } + + /* Fill in a Tx ring entry */ + + netdev_dbg(dev, "TX pkt type 0x%04x from %pM to %pM data 0x%08x len %d\n", + ((u_short *)skb->data)[6], + skb->data + 6, skb->data, + (int)skb->data, (int)skb->len); + + local_irq_save(flags); + + entry = priv->cur_tx % TX_RING_SIZE; + + /* Caution: the write order is important here, set the base address with + the "ownership" bits last */ + + priv->tx_ring[entry]->TMD2 = swapw((u_short)-skb->len); + priv->tx_ring[entry]->TMD3 = 0x0000; + memcpyw(priv->tx_buff[entry], (u_short *)skb->data, len); + +#ifdef DEBUG + print_hex_dump(KERN_DEBUG, "tx_buff: ", DUMP_PREFIX_OFFSET, 16, 1, + (void *)priv->tx_buff[entry], + skb->len > 64 ? 64 : skb->len, true); +#endif + + priv->tx_ring[entry]->TMD1 = (priv->tx_ring[entry]->TMD1 & 0xff00) + | TF_OWN | TF_STP | TF_ENP; + + dev_kfree_skb(skb); + + priv->cur_tx++; + if ((priv->cur_tx >= TX_RING_SIZE) && + (priv->dirty_tx >= TX_RING_SIZE)) { + + netdev_dbg(dev, "*** Subtracting TX_RING_SIZE from cur_tx (%d) and dirty_tx (%d)\n", + priv->cur_tx, priv->dirty_tx); + + priv->cur_tx -= TX_RING_SIZE; + priv->dirty_tx -= TX_RING_SIZE; + } + dev->stats.tx_bytes += len; + + /* Trigger an immediate send poll */ + lance->RAP = CSR0; /* PCnet-ISA Controller Status */ + lance->RDP = INEA | TDMD; + + if (lowb(priv->tx_ring[(entry + 1) % TX_RING_SIZE]->TMD1) != 0) { + netif_stop_queue(dev); + priv->tx_full = 1; + } + local_irq_restore(flags); + + return NETDEV_TX_OK; +} + +static struct net_device_stats *ariadne_get_stats(struct net_device *dev) +{ + volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr; + short saved_addr; + unsigned long flags; + + local_irq_save(flags); + saved_addr = lance->RAP; + lance->RAP = CSR112; /* Missed Frame Count */ + dev->stats.rx_missed_errors = swapw(lance->RDP); + lance->RAP = saved_addr; + local_irq_restore(flags); + + return &dev->stats; +} + +/* Set or clear the multicast filter for this adaptor. + * num_addrs == -1 Promiscuous mode, receive all packets + * num_addrs == 0 Normal mode, clear multicast list + * num_addrs > 0 Multicast mode, receive normal and MC packets, + * and do best-effort filtering. + */ +static void set_multicast_list(struct net_device *dev) +{ + volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr; + + if (!netif_running(dev)) + return; + + netif_stop_queue(dev); + + /* We take the simple way out and always enable promiscuous mode */ + lance->RAP = CSR0; /* PCnet-ISA Controller Status */ + lance->RDP = STOP; /* Temporarily stop the lance */ + ariadne_init_ring(dev); + + if (dev->flags & IFF_PROMISC) { + lance->RAP = CSR15; /* Mode Register */ + lance->RDP = PROM; /* Set promiscuous mode */ + } else { + short multicast_table[4]; + int num_addrs = netdev_mc_count(dev); + int i; + /* We don't use the multicast table, + * but rely on upper-layer filtering + */ + memset(multicast_table, (num_addrs == 0) ? 0 : -1, + sizeof(multicast_table)); + for (i = 0; i < 4; i++) { + lance->RAP = CSR8 + (i << 8); + /* Logical Address Filter */ + lance->RDP = swapw(multicast_table[i]); + } + lance->RAP = CSR15; /* Mode Register */ + lance->RDP = 0x0000; /* Unset promiscuous mode */ + } + + lance->RAP = CSR0; /* PCnet-ISA Controller Status */ + lance->RDP = INEA | STRT | IDON;/* Resume normal operation */ + + netif_wake_queue(dev); +} + + +static void __devexit ariadne_remove_one(struct zorro_dev *z) +{ + struct net_device *dev = zorro_get_drvdata(z); + + unregister_netdev(dev); + release_mem_region(ZTWO_PADDR(dev->base_addr), sizeof(struct Am79C960)); + release_mem_region(ZTWO_PADDR(dev->mem_start), ARIADNE_RAM_SIZE); + free_netdev(dev); +} + +static struct zorro_device_id ariadne_zorro_tbl[] __devinitdata = { + { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE }, + { 0 } +}; +MODULE_DEVICE_TABLE(zorro, ariadne_zorro_tbl); + +static const struct net_device_ops ariadne_netdev_ops = { + .ndo_open = ariadne_open, + .ndo_stop = ariadne_close, + .ndo_start_xmit = ariadne_start_xmit, + .ndo_tx_timeout = ariadne_tx_timeout, + .ndo_get_stats = ariadne_get_stats, + .ndo_set_rx_mode = set_multicast_list, + .ndo_validate_addr = eth_validate_addr, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, +}; + +static int __devinit ariadne_init_one(struct zorro_dev *z, + const struct zorro_device_id *ent) +{ + unsigned long board = z->resource.start; + unsigned long base_addr = board + ARIADNE_LANCE; + unsigned long mem_start = board + ARIADNE_RAM; + struct resource *r1, *r2; + struct net_device *dev; + struct ariadne_private *priv; + int err; + + r1 = request_mem_region(base_addr, sizeof(struct Am79C960), "Am79C960"); + if (!r1) + return -EBUSY; + r2 = request_mem_region(mem_start, ARIADNE_RAM_SIZE, "RAM"); + if (!r2) { + release_mem_region(base_addr, sizeof(struct Am79C960)); + return -EBUSY; + } + + dev = alloc_etherdev(sizeof(struct ariadne_private)); + if (dev == NULL) { + release_mem_region(base_addr, sizeof(struct Am79C960)); + release_mem_region(mem_start, ARIADNE_RAM_SIZE); + return -ENOMEM; + } + + priv = netdev_priv(dev); + + r1->name = dev->name; + r2->name = dev->name; + + dev->dev_addr[0] = 0x00; + dev->dev_addr[1] = 0x60; + dev->dev_addr[2] = 0x30; + dev->dev_addr[3] = (z->rom.er_SerialNumber >> 16) & 0xff; + dev->dev_addr[4] = (z->rom.er_SerialNumber >> 8) & 0xff; + dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff; + dev->base_addr = ZTWO_VADDR(base_addr); + dev->mem_start = ZTWO_VADDR(mem_start); + dev->mem_end = dev->mem_start + ARIADNE_RAM_SIZE; + + dev->netdev_ops = &ariadne_netdev_ops; + dev->watchdog_timeo = 5 * HZ; + + err = register_netdev(dev); + if (err) { + release_mem_region(base_addr, sizeof(struct Am79C960)); + release_mem_region(mem_start, ARIADNE_RAM_SIZE); + free_netdev(dev); + return err; + } + zorro_set_drvdata(z, dev); + + netdev_info(dev, "Ariadne at 0x%08lx, Ethernet Address %pM\n", + board, dev->dev_addr); + + return 0; +} + +static struct zorro_driver ariadne_driver = { + .name = "ariadne", + .id_table = ariadne_zorro_tbl, + .probe = ariadne_init_one, + .remove = __devexit_p(ariadne_remove_one), +}; + +static int __init ariadne_init_module(void) +{ + return zorro_register_driver(&ariadne_driver); +} + +static void __exit ariadne_cleanup_module(void) +{ + zorro_unregister_driver(&ariadne_driver); +} + +module_init(ariadne_init_module); +module_exit(ariadne_cleanup_module); + +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ethernet/amd/ariadne.h b/drivers/net/ethernet/amd/ariadne.h new file mode 100644 index 000000000000..727be5cdd1ea --- /dev/null +++ b/drivers/net/ethernet/amd/ariadne.h @@ -0,0 +1,415 @@ +/* + * Amiga Linux/m68k Ariadne Ethernet Driver + * + * © Copyright 1995 by Geert Uytterhoeven (geert@linux-m68k.org) + * Peter De Schrijver + * (Peter.DeSchrijver@linux.cc.kuleuven.ac.be) + * + * ---------------------------------------------------------------------------------- + * + * This program is based on + * + * lance.c: An AMD LANCE ethernet driver for linux. + * Written 1993-94 by Donald Becker. + * + * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller + * Advanced Micro Devices + * Publication #16907, Rev. B, Amendment/0, May 1994 + * + * MC68230: Parallel Interface/Timer (PI/T) + * Motorola Semiconductors, December, 1983 + * + * ---------------------------------------------------------------------------------- + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of the Linux + * distribution for more details. + * + * ---------------------------------------------------------------------------------- + * + * The Ariadne is a Zorro-II board made by Village Tronic. It contains: + * + * - an Am79C960 PCnet-ISA Single-Chip Ethernet Controller with both + * 10BASE-2 (thin coax) and 10BASE-T (UTP) connectors + * + * - an MC68230 Parallel Interface/Timer configured as 2 parallel ports + */ + + + /* + * Am79C960 PCnet-ISA + */ + +struct Am79C960 { + volatile u_short AddressPROM[8]; + /* IEEE Address PROM (Unused in the Ariadne) */ + volatile u_short RDP; /* Register Data Port */ + volatile u_short RAP; /* Register Address Port */ + volatile u_short Reset; /* Reset Chip on Read Access */ + volatile u_short IDP; /* ISACSR Data Port */ +}; + + + /* + * Am79C960 Control and Status Registers + * + * These values are already swap()ed!! + * + * Only registers marked with a `-' are intended for network software + * access + */ + +#define CSR0 0x0000 /* - PCnet-ISA Controller Status */ +#define CSR1 0x0100 /* - IADR[15:0] */ +#define CSR2 0x0200 /* - IADR[23:16] */ +#define CSR3 0x0300 /* - Interrupt Masks and Deferral Control */ +#define CSR4 0x0400 /* - Test and Features Control */ +#define CSR6 0x0600 /* RCV/XMT Descriptor Table Length */ +#define CSR8 0x0800 /* - Logical Address Filter, LADRF[15:0] */ +#define CSR9 0x0900 /* - Logical Address Filter, LADRF[31:16] */ +#define CSR10 0x0a00 /* - Logical Address Filter, LADRF[47:32] */ +#define CSR11 0x0b00 /* - Logical Address Filter, LADRF[63:48] */ +#define CSR12 0x0c00 /* - Physical Address Register, PADR[15:0] */ +#define CSR13 0x0d00 /* - Physical Address Register, PADR[31:16] */ +#define CSR14 0x0e00 /* - Physical Address Register, PADR[47:32] */ +#define CSR15 0x0f00 /* - Mode Register */ +#define CSR16 0x1000 /* Initialization Block Address Lower */ +#define CSR17 0x1100 /* Initialization Block Address Upper */ +#define CSR18 0x1200 /* Current Receive Buffer Address */ +#define CSR19 0x1300 /* Current Receive Buffer Address */ +#define CSR20 0x1400 /* Current Transmit Buffer Address */ +#define CSR21 0x1500 /* Current Transmit Buffer Address */ +#define CSR22 0x1600 /* Next Receive Buffer Address */ +#define CSR23 0x1700 /* Next Receive Buffer Address */ +#define CSR24 0x1800 /* - Base Address of Receive Ring */ +#define CSR25 0x1900 /* - Base Address of Receive Ring */ +#define CSR26 0x1a00 /* Next Receive Descriptor Address */ +#define CSR27 0x1b00 /* Next Receive Descriptor Address */ +#define CSR28 0x1c00 /* Current Receive Descriptor Address */ +#define CSR29 0x1d00 /* Current Receive Descriptor Address */ +#define CSR30 0x1e00 /* - Base Address of Transmit Ring */ +#define CSR31 0x1f00 /* - Base Address of transmit Ring */ +#define CSR32 0x2000 /* Next Transmit Descriptor Address */ +#define CSR33 0x2100 /* Next Transmit Descriptor Address */ +#define CSR34 0x2200 /* Current Transmit Descriptor Address */ +#define CSR35 0x2300 /* Current Transmit Descriptor Address */ +#define CSR36 0x2400 /* Next Next Receive Descriptor Address */ +#define CSR37 0x2500 /* Next Next Receive Descriptor Address */ +#define CSR38 0x2600 /* Next Next Transmit Descriptor Address */ +#define CSR39 0x2700 /* Next Next Transmit Descriptor Address */ +#define CSR40 0x2800 /* Current Receive Status and Byte Count */ +#define CSR41 0x2900 /* Current Receive Status and Byte Count */ +#define CSR42 0x2a00 /* Current Transmit Status and Byte Count */ +#define CSR43 0x2b00 /* Current Transmit Status and Byte Count */ +#define CSR44 0x2c00 /* Next Receive Status and Byte Count */ +#define CSR45 0x2d00 /* Next Receive Status and Byte Count */ +#define CSR46 0x2e00 /* Poll Time Counter */ +#define CSR47 0x2f00 /* Polling Interval */ +#define CSR48 0x3000 /* Temporary Storage */ +#define CSR49 0x3100 /* Temporary Storage */ +#define CSR50 0x3200 /* Temporary Storage */ +#define CSR51 0x3300 /* Temporary Storage */ +#define CSR52 0x3400 /* Temporary Storage */ +#define CSR53 0x3500 /* Temporary Storage */ +#define CSR54 0x3600 /* Temporary Storage */ +#define CSR55 0x3700 /* Temporary Storage */ +#define CSR56 0x3800 /* Temporary Storage */ +#define CSR57 0x3900 /* Temporary Storage */ +#define CSR58 0x3a00 /* Temporary Storage */ +#define CSR59 0x3b00 /* Temporary Storage */ +#define CSR60 0x3c00 /* Previous Transmit Descriptor Address */ +#define CSR61 0x3d00 /* Previous Transmit Descriptor Address */ +#define CSR62 0x3e00 /* Previous Transmit Status and Byte Count */ +#define CSR63 0x3f00 /* Previous Transmit Status and Byte Count */ +#define CSR64 0x4000 /* Next Transmit Buffer Address */ +#define CSR65 0x4100 /* Next Transmit Buffer Address */ +#define CSR66 0x4200 /* Next Transmit Status and Byte Count */ +#define CSR67 0x4300 /* Next Transmit Status and Byte Count */ +#define CSR68 0x4400 /* Transmit Status Temporary Storage */ +#define CSR69 0x4500 /* Transmit Status Temporary Storage */ +#define CSR70 0x4600 /* Temporary Storage */ +#define CSR71 0x4700 /* Temporary Storage */ +#define CSR72 0x4800 /* Receive Ring Counter */ +#define CSR74 0x4a00 /* Transmit Ring Counter */ +#define CSR76 0x4c00 /* - Receive Ring Length */ +#define CSR78 0x4e00 /* - Transmit Ring Length */ +#define CSR80 0x5000 /* - Burst and FIFO Threshold Control */ +#define CSR82 0x5200 /* - Bus Activity Timer */ +#define CSR84 0x5400 /* DMA Address */ +#define CSR85 0x5500 /* DMA Address */ +#define CSR86 0x5600 /* Buffer Byte Counter */ +#define CSR88 0x5800 /* - Chip ID */ +#define CSR89 0x5900 /* - Chip ID */ +#define CSR92 0x5c00 /* Ring Length Conversion */ +#define CSR94 0x5e00 /* Transmit Time Domain Reflectometry Count */ +#define CSR96 0x6000 /* Bus Interface Scratch Register 0 */ +#define CSR97 0x6100 /* Bus Interface Scratch Register 0 */ +#define CSR98 0x6200 /* Bus Interface Scratch Register 1 */ +#define CSR99 0x6300 /* Bus Interface Scratch Register 1 */ +#define CSR104 0x6800 /* SWAP */ +#define CSR105 0x6900 /* SWAP */ +#define CSR108 0x6c00 /* Buffer Management Scratch */ +#define CSR109 0x6d00 /* Buffer Management Scratch */ +#define CSR112 0x7000 /* - Missed Frame Count */ +#define CSR114 0x7200 /* - Receive Collision Count */ +#define CSR124 0x7c00 /* - Buffer Management Unit Test */ + + + /* + * Am79C960 ISA Control and Status Registers + * + * These values are already swap()ed!! + */ + +#define ISACSR0 0x0000 /* Master Mode Read Active */ +#define ISACSR1 0x0100 /* Master Mode Write Active */ +#define ISACSR2 0x0200 /* Miscellaneous Configuration */ +#define ISACSR4 0x0400 /* LED0 Status (Link Integrity) */ +#define ISACSR5 0x0500 /* LED1 Status */ +#define ISACSR6 0x0600 /* LED2 Status */ +#define ISACSR7 0x0700 /* LED3 Status */ + + + /* + * Bit definitions for CSR0 (PCnet-ISA Controller Status) + * + * These values are already swap()ed!! + */ + +#define ERR 0x0080 /* Error */ +#define BABL 0x0040 /* Babble: Transmitted too many bits */ +#define CERR 0x0020 /* No Heartbeat (10BASE-T) */ +#define MISS 0x0010 /* Missed Frame */ +#define MERR 0x0008 /* Memory Error */ +#define RINT 0x0004 /* Receive Interrupt */ +#define TINT 0x0002 /* Transmit Interrupt */ +#define IDON 0x0001 /* Initialization Done */ +#define INTR 0x8000 /* Interrupt Flag */ +#define INEA 0x4000 /* Interrupt Enable */ +#define RXON 0x2000 /* Receive On */ +#define TXON 0x1000 /* Transmit On */ +#define TDMD 0x0800 /* Transmit Demand */ +#define STOP 0x0400 /* Stop */ +#define STRT 0x0200 /* Start */ +#define INIT 0x0100 /* Initialize */ + + + /* + * Bit definitions for CSR3 (Interrupt Masks and Deferral Control) + * + * These values are already swap()ed!! + */ + +#define BABLM 0x0040 /* Babble Mask */ +#define MISSM 0x0010 /* Missed Frame Mask */ +#define MERRM 0x0008 /* Memory Error Mask */ +#define RINTM 0x0004 /* Receive Interrupt Mask */ +#define TINTM 0x0002 /* Transmit Interrupt Mask */ +#define IDONM 0x0001 /* Initialization Done Mask */ +#define DXMT2PD 0x1000 /* Disable Transmit Two Part Deferral */ +#define EMBA 0x0800 /* Enable Modified Back-off Algorithm */ + + + /* + * Bit definitions for CSR4 (Test and Features Control) + * + * These values are already swap()ed!! + */ + +#define ENTST 0x0080 /* Enable Test Mode */ +#define DMAPLUS 0x0040 /* Disable Burst Transaction Counter */ +#define TIMER 0x0020 /* Timer Enable Register */ +#define DPOLL 0x0010 /* Disable Transmit Polling */ +#define APAD_XMT 0x0008 /* Auto Pad Transmit */ +#define ASTRP_RCV 0x0004 /* Auto Pad Stripping */ +#define MFCO 0x0002 /* Missed Frame Counter Overflow Interrupt */ +#define MFCOM 0x0001 /* Missed Frame Counter Overflow Mask */ +#define RCVCCO 0x2000 /* Receive Collision Counter Overflow Interrupt */ +#define RCVCCOM 0x1000 /* Receive Collision Counter Overflow Mask */ +#define TXSTRT 0x0800 /* Transmit Start Status */ +#define TXSTRTM 0x0400 /* Transmit Start Mask */ +#define JAB 0x0200 /* Jabber Error */ +#define JABM 0x0100 /* Jabber Error Mask */ + + + /* + * Bit definitions for CSR15 (Mode Register) + * + * These values are already swap()ed!! + */ + +#define PROM 0x0080 /* Promiscuous Mode */ +#define DRCVBC 0x0040 /* Disable Receive Broadcast */ +#define DRCVPA 0x0020 /* Disable Receive Physical Address */ +#define DLNKTST 0x0010 /* Disable Link Status */ +#define DAPC 0x0008 /* Disable Automatic Polarity Correction */ +#define MENDECL 0x0004 /* MENDEC Loopback Mode */ +#define LRTTSEL 0x0002 /* Low Receive Threshold/Transmit Mode Select */ +#define PORTSEL1 0x0001 /* Port Select Bits */ +#define PORTSEL2 0x8000 /* Port Select Bits */ +#define INTL 0x4000 /* Internal Loopback */ +#define DRTY 0x2000 /* Disable Retry */ +#define FCOLL 0x1000 /* Force Collision */ +#define DXMTFCS 0x0800 /* Disable Transmit CRC */ +#define LOOP 0x0400 /* Loopback Enable */ +#define DTX 0x0200 /* Disable Transmitter */ +#define DRX 0x0100 /* Disable Receiver */ + + + /* + * Bit definitions for ISACSR2 (Miscellaneous Configuration) + * + * These values are already swap()ed!! + */ + +#define ASEL 0x0200 /* Media Interface Port Auto Select */ + + + /* + * Bit definitions for ISACSR5-7 (LED1-3 Status) + * + * These values are already swap()ed!! + */ + +#define LEDOUT 0x0080 /* Current LED Status */ +#define PSE 0x8000 /* Pulse Stretcher Enable */ +#define XMTE 0x1000 /* Enable Transmit Status Signal */ +#define RVPOLE 0x0800 /* Enable Receive Polarity Signal */ +#define RCVE 0x0400 /* Enable Receive Status Signal */ +#define JABE 0x0200 /* Enable Jabber Signal */ +#define COLE 0x0100 /* Enable Collision Signal */ + + + /* + * Receive Descriptor Ring Entry + */ + +struct RDRE { + volatile u_short RMD0; /* LADR[15:0] */ + volatile u_short RMD1; /* HADR[23:16] | Receive Flags */ + volatile u_short RMD2; /* Buffer Byte Count (two's complement) */ + volatile u_short RMD3; /* Message Byte Count */ +}; + + + /* + * Transmit Descriptor Ring Entry + */ + +struct TDRE { + volatile u_short TMD0; /* LADR[15:0] */ + volatile u_short TMD1; /* HADR[23:16] | Transmit Flags */ + volatile u_short TMD2; /* Buffer Byte Count (two's complement) */ + volatile u_short TMD3; /* Error Flags */ +}; + + + /* + * Receive Flags + */ + +#define RF_OWN 0x0080 /* PCnet-ISA controller owns the descriptor */ +#define RF_ERR 0x0040 /* Error */ +#define RF_FRAM 0x0020 /* Framing Error */ +#define RF_OFLO 0x0010 /* Overflow Error */ +#define RF_CRC 0x0008 /* CRC Error */ +#define RF_BUFF 0x0004 /* Buffer Error */ +#define RF_STP 0x0002 /* Start of Packet */ +#define RF_ENP 0x0001 /* End of Packet */ + + + /* + * Transmit Flags + */ + +#define TF_OWN 0x0080 /* PCnet-ISA controller owns the descriptor */ +#define TF_ERR 0x0040 /* Error */ +#define TF_ADD_FCS 0x0020 /* Controls FCS Generation */ +#define TF_MORE 0x0010 /* More than one retry needed */ +#define TF_ONE 0x0008 /* One retry needed */ +#define TF_DEF 0x0004 /* Deferred */ +#define TF_STP 0x0002 /* Start of Packet */ +#define TF_ENP 0x0001 /* End of Packet */ + + + /* + * Error Flags + */ + +#define EF_BUFF 0x0080 /* Buffer Error */ +#define EF_UFLO 0x0040 /* Underflow Error */ +#define EF_LCOL 0x0010 /* Late Collision */ +#define EF_LCAR 0x0008 /* Loss of Carrier */ +#define EF_RTRY 0x0004 /* Retry Error */ +#define EF_TDR 0xff03 /* Time Domain Reflectometry */ + + + + /* + * MC68230 Parallel Interface/Timer + */ + +struct MC68230 { + volatile u_char PGCR; /* Port General Control Register */ + u_char Pad1[1]; + volatile u_char PSRR; /* Port Service Request Register */ + u_char Pad2[1]; + volatile u_char PADDR; /* Port A Data Direction Register */ + u_char Pad3[1]; + volatile u_char PBDDR; /* Port B Data Direction Register */ + u_char Pad4[1]; + volatile u_char PCDDR; /* Port C Data Direction Register */ + u_char Pad5[1]; + volatile u_char PIVR; /* Port Interrupt Vector Register */ + u_char Pad6[1]; + volatile u_char PACR; /* Port A Control Register */ + u_char Pad7[1]; + volatile u_char PBCR; /* Port B Control Register */ + u_char Pad8[1]; + volatile u_char PADR; /* Port A Data Register */ + u_char Pad9[1]; + volatile u_char PBDR; /* Port B Data Register */ + u_char Pad10[1]; + volatile u_char PAAR; /* Port A Alternate Register */ + u_char Pad11[1]; + volatile u_char PBAR; /* Port B Alternate Register */ + u_char Pad12[1]; + volatile u_char PCDR; /* Port C Data Register */ + u_char Pad13[1]; + volatile u_char PSR; /* Port Status Register */ + u_char Pad14[5]; + volatile u_char TCR; /* Timer Control Register */ + u_char Pad15[1]; + volatile u_char TIVR; /* Timer Interrupt Vector Register */ + u_char Pad16[3]; + volatile u_char CPRH; /* Counter Preload Register (High) */ + u_char Pad17[1]; + volatile u_char CPRM; /* Counter Preload Register (Mid) */ + u_char Pad18[1]; + volatile u_char CPRL; /* Counter Preload Register (Low) */ + u_char Pad19[3]; + volatile u_char CNTRH; /* Count Register (High) */ + u_char Pad20[1]; + volatile u_char CNTRM; /* Count Register (Mid) */ + u_char Pad21[1]; + volatile u_char CNTRL; /* Count Register (Low) */ + u_char Pad22[1]; + volatile u_char TSR; /* Timer Status Register */ + u_char Pad23[11]; +}; + + + /* + * Ariadne Expansion Board Structure + */ + +#define ARIADNE_LANCE 0x360 + +#define ARIADNE_PIT 0x1000 + +#define ARIADNE_BOOTPROM 0x4000 /* I guess it's here :-) */ +#define ARIADNE_BOOTPROM_SIZE 0x4000 + +#define ARIADNE_RAM 0x8000 /* Always access WORDs!! */ +#define ARIADNE_RAM_SIZE 0x8000 + diff --git a/drivers/net/ethernet/amd/atarilance.c b/drivers/net/ethernet/amd/atarilance.c new file mode 100644 index 000000000000..15bfa28d6c53 --- /dev/null +++ b/drivers/net/ethernet/amd/atarilance.c @@ -0,0 +1,1176 @@ +/* atarilance.c: Ethernet driver for VME Lance cards on the Atari */ +/* + Written 1995/96 by Roman Hodek (Roman.Hodek@informatik.uni-erlangen.de) + + This software may be used and distributed according to the terms + of the GNU General Public License, incorporated herein by reference. + + This drivers was written with the following sources of reference: + - The driver for the Riebl Lance card by the TU Vienna. + - The modified TUW driver for PAM's VME cards + - The PC-Linux driver for Lance cards (but this is for bus master + cards, not the shared memory ones) + - The Amiga Ariadne driver + + v1.0: (in 1.2.13pl4/0.9.13) + Initial version + v1.1: (in 1.2.13pl5) + more comments + deleted some debugging stuff + optimized register access (keep AREG pointing to CSR0) + following AMD, CSR0_STRT should be set only after IDON is detected + use memcpy() for data transfers, that also employs long word moves + better probe procedure for 24-bit systems + non-VME-RieblCards need extra delays in memcpy + must also do write test, since 0xfxe00000 may hit ROM + use 8/32 tx/rx buffers, which should give better NFS performance; + this is made possible by shifting the last packet buffer after the + RieblCard reserved area + v1.2: (in 1.2.13pl8) + again fixed probing for the Falcon; 0xfe01000 hits phys. 0x00010000 + and thus RAM, in case of no Lance found all memory contents have to + be restored! + Now possible to compile as module. + v1.3: 03/30/96 Jes Sorensen, Roman (in 1.3) + Several little 1.3 adaptions + When the lance is stopped it jumps back into little-endian + mode. It is therefore necessary to put it back where it + belongs, in big endian mode, in order to make things work. + This might be the reason why multicast-mode didn't work + before, but I'm not able to test it as I only got an Amiga + (we had similar problems with the A2065 driver). + +*/ + +static char version[] = "atarilance.c: v1.3 04/04/96 " + "Roman.Hodek@informatik.uni-erlangen.de\n"; + +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/module.h> +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/skbuff.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/bitops.h> + +#include <asm/setup.h> +#include <asm/irq.h> +#include <asm/atarihw.h> +#include <asm/atariints.h> +#include <asm/io.h> + +/* Debug level: + * 0 = silent, print only serious errors + * 1 = normal, print error messages + * 2 = debug, print debug infos + * 3 = debug, print even more debug infos (packet data) + */ + +#define LANCE_DEBUG 1 + +#ifdef LANCE_DEBUG +static int lance_debug = LANCE_DEBUG; +#else +static int lance_debug = 1; +#endif +module_param(lance_debug, int, 0); +MODULE_PARM_DESC(lance_debug, "atarilance debug level (0-3)"); +MODULE_LICENSE("GPL"); + +/* Print debug messages on probing? */ +#undef LANCE_DEBUG_PROBE + +#define DPRINTK(n,a) \ + do { \ + if (lance_debug >= n) \ + printk a; \ + } while( 0 ) + +#ifdef LANCE_DEBUG_PROBE +# define PROBE_PRINT(a) printk a +#else +# define PROBE_PRINT(a) +#endif + +/* These define the number of Rx and Tx buffers as log2. (Only powers + * of two are valid) + * Much more rx buffers (32) are reserved than tx buffers (8), since receiving + * is more time critical then sending and packets may have to remain in the + * board's memory when main memory is low. + */ + +#define TX_LOG_RING_SIZE 3 +#define RX_LOG_RING_SIZE 5 + +/* These are the derived values */ + +#define TX_RING_SIZE (1 << TX_LOG_RING_SIZE) +#define TX_RING_LEN_BITS (TX_LOG_RING_SIZE << 5) +#define TX_RING_MOD_MASK (TX_RING_SIZE - 1) + +#define RX_RING_SIZE (1 << RX_LOG_RING_SIZE) +#define RX_RING_LEN_BITS (RX_LOG_RING_SIZE << 5) +#define RX_RING_MOD_MASK (RX_RING_SIZE - 1) + +#define TX_TIMEOUT (HZ/5) + +/* The LANCE Rx and Tx ring descriptors. */ +struct lance_rx_head { + unsigned short base; /* Low word of base addr */ + volatile unsigned char flag; + unsigned char base_hi; /* High word of base addr (unused) */ + short buf_length; /* This length is 2s complement! */ + volatile short msg_length; /* This length is "normal". */ +}; + +struct lance_tx_head { + unsigned short base; /* Low word of base addr */ + volatile unsigned char flag; + unsigned char base_hi; /* High word of base addr (unused) */ + short length; /* Length is 2s complement! */ + volatile short misc; +}; + +struct ringdesc { + unsigned short adr_lo; /* Low 16 bits of address */ + unsigned char len; /* Length bits */ + unsigned char adr_hi; /* High 8 bits of address (unused) */ +}; + +/* The LANCE initialization block, described in databook. */ +struct lance_init_block { + unsigned short mode; /* Pre-set mode */ + unsigned char hwaddr[6]; /* Physical ethernet address */ + unsigned filter[2]; /* Multicast filter (unused). */ + /* Receive and transmit ring base, along with length bits. */ + struct ringdesc rx_ring; + struct ringdesc tx_ring; +}; + +/* The whole layout of the Lance shared memory */ +struct lance_memory { + struct lance_init_block init; + struct lance_tx_head tx_head[TX_RING_SIZE]; + struct lance_rx_head rx_head[RX_RING_SIZE]; + char packet_area[0]; /* packet data follow after the + * init block and the ring + * descriptors and are located + * at runtime */ +}; + +/* RieblCard specifics: + * The original TOS driver for these cards reserves the area from offset + * 0xee70 to 0xeebb for storing configuration data. Of interest to us is the + * Ethernet address there, and the magic for verifying the data's validity. + * The reserved area isn't touch by packet buffers. Furthermore, offset 0xfffe + * is reserved for the interrupt vector number. + */ +#define RIEBL_RSVD_START 0xee70 +#define RIEBL_RSVD_END 0xeec0 +#define RIEBL_MAGIC 0x09051990 +#define RIEBL_MAGIC_ADDR ((unsigned long *)(((char *)MEM) + 0xee8a)) +#define RIEBL_HWADDR_ADDR ((unsigned char *)(((char *)MEM) + 0xee8e)) +#define RIEBL_IVEC_ADDR ((unsigned short *)(((char *)MEM) + 0xfffe)) + +/* This is a default address for the old RieblCards without a battery + * that have no ethernet address at boot time. 00:00:36:04 is the + * prefix for Riebl cards, the 00:00 at the end is arbitrary. + */ + +static unsigned char OldRieblDefHwaddr[6] = { + 0x00, 0x00, 0x36, 0x04, 0x00, 0x00 +}; + + +/* I/O registers of the Lance chip */ + +struct lance_ioreg { +/* base+0x0 */ volatile unsigned short data; +/* base+0x2 */ volatile unsigned short addr; + unsigned char _dummy1[3]; +/* base+0x7 */ volatile unsigned char ivec; + unsigned char _dummy2[5]; +/* base+0xd */ volatile unsigned char eeprom; + unsigned char _dummy3; +/* base+0xf */ volatile unsigned char mem; +}; + +/* Types of boards this driver supports */ + +enum lance_type { + OLD_RIEBL, /* old Riebl card without battery */ + NEW_RIEBL, /* new Riebl card with battery */ + PAM_CARD /* PAM card with EEPROM */ +}; + +static char *lance_names[] = { + "Riebl-Card (without battery)", + "Riebl-Card (with battery)", + "PAM intern card" +}; + +/* The driver's private device structure */ + +struct lance_private { + enum lance_type cardtype; + struct lance_ioreg *iobase; + struct lance_memory *mem; + int cur_rx, cur_tx; /* The next free ring entry */ + int dirty_tx; /* Ring entries to be freed. */ + /* copy function */ + void *(*memcpy_f)( void *, const void *, size_t ); +/* This must be long for set_bit() */ + long tx_full; + spinlock_t devlock; +}; + +/* I/O register access macros */ + +#define MEM lp->mem +#define DREG IO->data +#define AREG IO->addr +#define REGA(a) (*( AREG = (a), &DREG )) + +/* Definitions for packet buffer access: */ +#define PKT_BUF_SZ 1544 +/* Get the address of a packet buffer corresponding to a given buffer head */ +#define PKTBUF_ADDR(head) (((unsigned char *)(MEM)) + (head)->base) + +/* Possible memory/IO addresses for probing */ + +static struct lance_addr { + unsigned long memaddr; + unsigned long ioaddr; + int slow_flag; +} lance_addr_list[] = { + { 0xfe010000, 0xfe00fff0, 0 }, /* RieblCard VME in TT */ + { 0xffc10000, 0xffc0fff0, 0 }, /* RieblCard VME in MegaSTE + (highest byte stripped) */ + { 0xffe00000, 0xffff7000, 1 }, /* RieblCard in ST + (highest byte stripped) */ + { 0xffd00000, 0xffff7000, 1 }, /* RieblCard in ST with hw modif. to + avoid conflict with ROM + (highest byte stripped) */ + { 0xffcf0000, 0xffcffff0, 0 }, /* PAMCard VME in TT and MSTE + (highest byte stripped) */ + { 0xfecf0000, 0xfecffff0, 0 }, /* Rhotron's PAMCard VME in TT and MSTE + (highest byte stripped) */ +}; + +#define N_LANCE_ADDR ARRAY_SIZE(lance_addr_list) + + +/* Definitions for the Lance */ + +/* tx_head flags */ +#define TMD1_ENP 0x01 /* end of packet */ +#define TMD1_STP 0x02 /* start of packet */ +#define TMD1_DEF 0x04 /* deferred */ +#define TMD1_ONE 0x08 /* one retry needed */ +#define TMD1_MORE 0x10 /* more than one retry needed */ +#define TMD1_ERR 0x40 /* error summary */ +#define TMD1_OWN 0x80 /* ownership (set: chip owns) */ + +#define TMD1_OWN_CHIP TMD1_OWN +#define TMD1_OWN_HOST 0 + +/* tx_head misc field */ +#define TMD3_TDR 0x03FF /* Time Domain Reflectometry counter */ +#define TMD3_RTRY 0x0400 /* failed after 16 retries */ +#define TMD3_LCAR 0x0800 /* carrier lost */ +#define TMD3_LCOL 0x1000 /* late collision */ +#define TMD3_UFLO 0x4000 /* underflow (late memory) */ +#define TMD3_BUFF 0x8000 /* buffering error (no ENP) */ + +/* rx_head flags */ +#define RMD1_ENP 0x01 /* end of packet */ +#define RMD1_STP 0x02 /* start of packet */ +#define RMD1_BUFF 0x04 /* buffer error */ +#define RMD1_CRC 0x08 /* CRC error */ +#define RMD1_OFLO 0x10 /* overflow */ +#define RMD1_FRAM 0x20 /* framing error */ +#define RMD1_ERR 0x40 /* error summary */ +#define RMD1_OWN 0x80 /* ownership (set: ship owns) */ + +#define RMD1_OWN_CHIP RMD1_OWN +#define RMD1_OWN_HOST 0 + +/* register names */ +#define CSR0 0 /* mode/status */ +#define CSR1 1 /* init block addr (low) */ +#define CSR2 2 /* init block addr (high) */ +#define CSR3 3 /* misc */ +#define CSR8 8 /* address filter */ +#define CSR15 15 /* promiscuous mode */ + +/* CSR0 */ +/* (R=readable, W=writeable, S=set on write, C=clear on write) */ +#define CSR0_INIT 0x0001 /* initialize (RS) */ +#define CSR0_STRT 0x0002 /* start (RS) */ +#define CSR0_STOP 0x0004 /* stop (RS) */ +#define CSR0_TDMD 0x0008 /* transmit demand (RS) */ +#define CSR0_TXON 0x0010 /* transmitter on (R) */ +#define CSR0_RXON 0x0020 /* receiver on (R) */ +#define CSR0_INEA 0x0040 /* interrupt enable (RW) */ +#define CSR0_INTR 0x0080 /* interrupt active (R) */ +#define CSR0_IDON 0x0100 /* initialization done (RC) */ +#define CSR0_TINT 0x0200 /* transmitter interrupt (RC) */ +#define CSR0_RINT 0x0400 /* receiver interrupt (RC) */ +#define CSR0_MERR 0x0800 /* memory error (RC) */ +#define CSR0_MISS 0x1000 /* missed frame (RC) */ +#define CSR0_CERR 0x2000 /* carrier error (no heartbeat :-) (RC) */ +#define CSR0_BABL 0x4000 /* babble: tx-ed too many bits (RC) */ +#define CSR0_ERR 0x8000 /* error (RC) */ + +/* CSR3 */ +#define CSR3_BCON 0x0001 /* byte control */ +#define CSR3_ACON 0x0002 /* ALE control */ +#define CSR3_BSWP 0x0004 /* byte swap (1=big endian) */ + + + +/***************************** Prototypes *****************************/ + +static unsigned long lance_probe1( struct net_device *dev, struct lance_addr + *init_rec ); +static int lance_open( struct net_device *dev ); +static void lance_init_ring( struct net_device *dev ); +static int lance_start_xmit( struct sk_buff *skb, struct net_device *dev ); +static irqreturn_t lance_interrupt( int irq, void *dev_id ); +static int lance_rx( struct net_device *dev ); +static int lance_close( struct net_device *dev ); +static void set_multicast_list( struct net_device *dev ); +static int lance_set_mac_address( struct net_device *dev, void *addr ); +static void lance_tx_timeout (struct net_device *dev); + +/************************* End of Prototypes **************************/ + + + + + +static void *slow_memcpy( void *dst, const void *src, size_t len ) + +{ char *cto = dst; + const char *cfrom = src; + + while( len-- ) { + *cto++ = *cfrom++; + MFPDELAY(); + } + return dst; +} + + +struct net_device * __init atarilance_probe(int unit) +{ + int i; + static int found; + struct net_device *dev; + int err = -ENODEV; + + if (!MACH_IS_ATARI || found) + /* Assume there's only one board possible... That seems true, since + * the Riebl/PAM board's address cannot be changed. */ + return ERR_PTR(-ENODEV); + + dev = alloc_etherdev(sizeof(struct lance_private)); + if (!dev) + return ERR_PTR(-ENOMEM); + if (unit >= 0) { + sprintf(dev->name, "eth%d", unit); + netdev_boot_setup_check(dev); + } + + for( i = 0; i < N_LANCE_ADDR; ++i ) { + if (lance_probe1( dev, &lance_addr_list[i] )) { + found = 1; + err = register_netdev(dev); + if (!err) + return dev; + free_irq(dev->irq, dev); + break; + } + } + free_netdev(dev); + return ERR_PTR(err); +} + + +/* Derived from hwreg_present() in atari/config.c: */ + +static noinline int __init addr_accessible(volatile void *regp, int wordflag, + int writeflag) +{ + int ret; + unsigned long flags; + long *vbr, save_berr; + + local_irq_save(flags); + + __asm__ __volatile__ ( "movec %/vbr,%0" : "=r" (vbr) : ); + save_berr = vbr[2]; + + __asm__ __volatile__ + ( "movel %/sp,%/d1\n\t" + "movel #Lberr,%2@\n\t" + "moveq #0,%0\n\t" + "tstl %3\n\t" + "bne 1f\n\t" + "moveb %1@,%/d0\n\t" + "nop \n\t" + "bra 2f\n" +"1: movew %1@,%/d0\n\t" + "nop \n" +"2: tstl %4\n\t" + "beq 2f\n\t" + "tstl %3\n\t" + "bne 1f\n\t" + "clrb %1@\n\t" + "nop \n\t" + "moveb %/d0,%1@\n\t" + "nop \n\t" + "bra 2f\n" +"1: clrw %1@\n\t" + "nop \n\t" + "movew %/d0,%1@\n\t" + "nop \n" +"2: moveq #1,%0\n" +"Lberr: movel %/d1,%/sp" + : "=&d" (ret) + : "a" (regp), "a" (&vbr[2]), "rm" (wordflag), "rm" (writeflag) + : "d0", "d1", "memory" + ); + + vbr[2] = save_berr; + local_irq_restore(flags); + + return ret; +} + +static const struct net_device_ops lance_netdev_ops = { + .ndo_open = lance_open, + .ndo_stop = lance_close, + .ndo_start_xmit = lance_start_xmit, + .ndo_set_rx_mode = set_multicast_list, + .ndo_set_mac_address = lance_set_mac_address, + .ndo_tx_timeout = lance_tx_timeout, + .ndo_validate_addr = eth_validate_addr, + .ndo_change_mtu = eth_change_mtu, +}; + +static unsigned long __init lance_probe1( struct net_device *dev, + struct lance_addr *init_rec ) +{ + volatile unsigned short *memaddr = + (volatile unsigned short *)init_rec->memaddr; + volatile unsigned short *ioaddr = + (volatile unsigned short *)init_rec->ioaddr; + struct lance_private *lp; + struct lance_ioreg *IO; + int i; + static int did_version; + unsigned short save1, save2; + + PROBE_PRINT(( "Probing for Lance card at mem %#lx io %#lx\n", + (long)memaddr, (long)ioaddr )); + + /* Test whether memory readable and writable */ + PROBE_PRINT(( "lance_probe1: testing memory to be accessible\n" )); + if (!addr_accessible( memaddr, 1, 1 )) goto probe_fail; + + /* Written values should come back... */ + PROBE_PRINT(( "lance_probe1: testing memory to be writable (1)\n" )); + save1 = *memaddr; + *memaddr = 0x0001; + if (*memaddr != 0x0001) goto probe_fail; + PROBE_PRINT(( "lance_probe1: testing memory to be writable (2)\n" )); + *memaddr = 0x0000; + if (*memaddr != 0x0000) goto probe_fail; + *memaddr = save1; + + /* First port should be readable and writable */ + PROBE_PRINT(( "lance_probe1: testing ioport to be accessible\n" )); + if (!addr_accessible( ioaddr, 1, 1 )) goto probe_fail; + + /* and written values should be readable */ + PROBE_PRINT(( "lance_probe1: testing ioport to be writeable\n" )); + save2 = ioaddr[1]; + ioaddr[1] = 0x0001; + if (ioaddr[1] != 0x0001) goto probe_fail; + + /* The CSR0_INIT bit should not be readable */ + PROBE_PRINT(( "lance_probe1: testing CSR0 register function (1)\n" )); + save1 = ioaddr[0]; + ioaddr[1] = CSR0; + ioaddr[0] = CSR0_INIT | CSR0_STOP; + if (ioaddr[0] != CSR0_STOP) { + ioaddr[0] = save1; + ioaddr[1] = save2; + goto probe_fail; + } + PROBE_PRINT(( "lance_probe1: testing CSR0 register function (2)\n" )); + ioaddr[0] = CSR0_STOP; + if (ioaddr[0] != CSR0_STOP) { + ioaddr[0] = save1; + ioaddr[1] = save2; + goto probe_fail; + } + + /* Now ok... */ + PROBE_PRINT(( "lance_probe1: Lance card detected\n" )); + goto probe_ok; + + probe_fail: + return 0; + + probe_ok: + lp = netdev_priv(dev); + MEM = (struct lance_memory *)memaddr; + IO = lp->iobase = (struct lance_ioreg *)ioaddr; + dev->base_addr = (unsigned long)ioaddr; /* informational only */ + lp->memcpy_f = init_rec->slow_flag ? slow_memcpy : memcpy; + + REGA( CSR0 ) = CSR0_STOP; + + /* Now test for type: If the eeprom I/O port is readable, it is a + * PAM card */ + if (addr_accessible( &(IO->eeprom), 0, 0 )) { + /* Switch back to Ram */ + i = IO->mem; + lp->cardtype = PAM_CARD; + } + else if (*RIEBL_MAGIC_ADDR == RIEBL_MAGIC) { + lp->cardtype = NEW_RIEBL; + } + else + lp->cardtype = OLD_RIEBL; + + if (lp->cardtype == PAM_CARD || + memaddr == (unsigned short *)0xffe00000) { + /* PAMs card and Riebl on ST use level 5 autovector */ + if (request_irq(IRQ_AUTO_5, lance_interrupt, IRQ_TYPE_PRIO, + "PAM,Riebl-ST Ethernet", dev)) { + printk( "Lance: request for irq %d failed\n", IRQ_AUTO_5 ); + return 0; + } + dev->irq = (unsigned short)IRQ_AUTO_5; + } + else { + /* For VME-RieblCards, request a free VME int; + * (This must be unsigned long, since dev->irq is short and the + * IRQ_MACHSPEC bit would be cut off...) + */ + unsigned long irq = atari_register_vme_int(); + if (!irq) { + printk( "Lance: request for VME interrupt failed\n" ); + return 0; + } + if (request_irq(irq, lance_interrupt, IRQ_TYPE_PRIO, + "Riebl-VME Ethernet", dev)) { + printk( "Lance: request for irq %ld failed\n", irq ); + return 0; + } + dev->irq = irq; + } + + printk("%s: %s at io %#lx, mem %#lx, irq %d%s, hwaddr ", + dev->name, lance_names[lp->cardtype], + (unsigned long)ioaddr, + (unsigned long)memaddr, + dev->irq, + init_rec->slow_flag ? " (slow memcpy)" : "" ); + + /* Get the ethernet address */ + switch( lp->cardtype ) { + case OLD_RIEBL: + /* No ethernet address! (Set some default address) */ + memcpy( dev->dev_addr, OldRieblDefHwaddr, 6 ); + break; + case NEW_RIEBL: + lp->memcpy_f( dev->dev_addr, RIEBL_HWADDR_ADDR, 6 ); + break; + case PAM_CARD: + i = IO->eeprom; + for( i = 0; i < 6; ++i ) + dev->dev_addr[i] = + ((((unsigned short *)MEM)[i*2] & 0x0f) << 4) | + ((((unsigned short *)MEM)[i*2+1] & 0x0f)); + i = IO->mem; + break; + } + printk("%pM\n", dev->dev_addr); + if (lp->cardtype == OLD_RIEBL) { + printk( "%s: Warning: This is a default ethernet address!\n", + dev->name ); + printk( " Use \"ifconfig hw ether ...\" to set the address.\n" ); + } + + spin_lock_init(&lp->devlock); + + MEM->init.mode = 0x0000; /* Disable Rx and Tx. */ + for( i = 0; i < 6; i++ ) + MEM->init.hwaddr[i] = dev->dev_addr[i^1]; /* <- 16 bit swap! */ + MEM->init.filter[0] = 0x00000000; + MEM->init.filter[1] = 0x00000000; + MEM->init.rx_ring.adr_lo = offsetof( struct lance_memory, rx_head ); + MEM->init.rx_ring.adr_hi = 0; + MEM->init.rx_ring.len = RX_RING_LEN_BITS; + MEM->init.tx_ring.adr_lo = offsetof( struct lance_memory, tx_head ); + MEM->init.tx_ring.adr_hi = 0; + MEM->init.tx_ring.len = TX_RING_LEN_BITS; + + if (lp->cardtype == PAM_CARD) + IO->ivec = IRQ_SOURCE_TO_VECTOR(dev->irq); + else + *RIEBL_IVEC_ADDR = IRQ_SOURCE_TO_VECTOR(dev->irq); + + if (did_version++ == 0) + DPRINTK( 1, ( version )); + + dev->netdev_ops = &lance_netdev_ops; + + /* XXX MSch */ + dev->watchdog_timeo = TX_TIMEOUT; + + return 1; +} + + +static int lance_open( struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_ioreg *IO = lp->iobase; + int i; + + DPRINTK( 2, ( "%s: lance_open()\n", dev->name )); + + lance_init_ring(dev); + /* Re-initialize the LANCE, and start it when done. */ + + REGA( CSR3 ) = CSR3_BSWP | (lp->cardtype == PAM_CARD ? CSR3_ACON : 0); + REGA( CSR2 ) = 0; + REGA( CSR1 ) = 0; + REGA( CSR0 ) = CSR0_INIT; + /* From now on, AREG is kept to point to CSR0 */ + + i = 1000000; + while (--i > 0) + if (DREG & CSR0_IDON) + break; + if (i <= 0 || (DREG & CSR0_ERR)) { + DPRINTK( 2, ( "lance_open(): opening %s failed, i=%d, csr0=%04x\n", + dev->name, i, DREG )); + DREG = CSR0_STOP; + return -EIO; + } + DREG = CSR0_IDON; + DREG = CSR0_STRT; + DREG = CSR0_INEA; + + netif_start_queue (dev); + + DPRINTK( 2, ( "%s: LANCE is open, csr0 %04x\n", dev->name, DREG )); + + return 0; +} + + +/* Initialize the LANCE Rx and Tx rings. */ + +static void lance_init_ring( struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + int i; + unsigned offset; + + lp->tx_full = 0; + lp->cur_rx = lp->cur_tx = 0; + lp->dirty_tx = 0; + + offset = offsetof( struct lance_memory, packet_area ); + +/* If the packet buffer at offset 'o' would conflict with the reserved area + * of RieblCards, advance it */ +#define CHECK_OFFSET(o) \ + do { \ + if (lp->cardtype == OLD_RIEBL || lp->cardtype == NEW_RIEBL) { \ + if (((o) < RIEBL_RSVD_START) ? (o)+PKT_BUF_SZ > RIEBL_RSVD_START \ + : (o) < RIEBL_RSVD_END) \ + (o) = RIEBL_RSVD_END; \ + } \ + } while(0) + + for( i = 0; i < TX_RING_SIZE; i++ ) { + CHECK_OFFSET(offset); + MEM->tx_head[i].base = offset; + MEM->tx_head[i].flag = TMD1_OWN_HOST; + MEM->tx_head[i].base_hi = 0; + MEM->tx_head[i].length = 0; + MEM->tx_head[i].misc = 0; + offset += PKT_BUF_SZ; + } + + for( i = 0; i < RX_RING_SIZE; i++ ) { + CHECK_OFFSET(offset); + MEM->rx_head[i].base = offset; + MEM->rx_head[i].flag = TMD1_OWN_CHIP; + MEM->rx_head[i].base_hi = 0; + MEM->rx_head[i].buf_length = -PKT_BUF_SZ; + MEM->rx_head[i].msg_length = 0; + offset += PKT_BUF_SZ; + } +} + + +/* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX */ + + +static void lance_tx_timeout (struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_ioreg *IO = lp->iobase; + + AREG = CSR0; + DPRINTK( 1, ( "%s: transmit timed out, status %04x, resetting.\n", + dev->name, DREG )); + DREG = CSR0_STOP; + /* + * Always set BSWP after a STOP as STOP puts it back into + * little endian mode. + */ + REGA( CSR3 ) = CSR3_BSWP | (lp->cardtype == PAM_CARD ? CSR3_ACON : 0); + dev->stats.tx_errors++; +#ifndef final_version + { int i; + DPRINTK( 2, ( "Ring data: dirty_tx %d cur_tx %d%s cur_rx %d\n", + lp->dirty_tx, lp->cur_tx, + lp->tx_full ? " (full)" : "", + lp->cur_rx )); + for( i = 0 ; i < RX_RING_SIZE; i++ ) + DPRINTK( 2, ( "rx #%d: base=%04x blen=%04x mlen=%04x\n", + i, MEM->rx_head[i].base, + -MEM->rx_head[i].buf_length, + MEM->rx_head[i].msg_length )); + for( i = 0 ; i < TX_RING_SIZE; i++ ) + DPRINTK( 2, ( "tx #%d: base=%04x len=%04x misc=%04x\n", + i, MEM->tx_head[i].base, + -MEM->tx_head[i].length, + MEM->tx_head[i].misc )); + } +#endif + /* XXX MSch: maybe purge/reinit ring here */ + /* lance_restart, essentially */ + lance_init_ring(dev); + REGA( CSR0 ) = CSR0_INEA | CSR0_INIT | CSR0_STRT; + dev->trans_start = jiffies; /* prevent tx timeout */ + netif_wake_queue(dev); +} + +/* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX */ + +static int lance_start_xmit( struct sk_buff *skb, struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_ioreg *IO = lp->iobase; + int entry, len; + struct lance_tx_head *head; + unsigned long flags; + + DPRINTK( 2, ( "%s: lance_start_xmit() called, csr0 %4.4x.\n", + dev->name, DREG )); + + + /* The old LANCE chips doesn't automatically pad buffers to min. size. */ + len = skb->len; + if (len < ETH_ZLEN) + len = ETH_ZLEN; + /* PAM-Card has a bug: Can only send packets with even number of bytes! */ + else if (lp->cardtype == PAM_CARD && (len & 1)) + ++len; + + if (len > skb->len) { + if (skb_padto(skb, len)) + return NETDEV_TX_OK; + } + + netif_stop_queue (dev); + + /* Fill in a Tx ring entry */ + if (lance_debug >= 3) { + printk( "%s: TX pkt type 0x%04x from %pM to %pM" + " data at 0x%08x len %d\n", + dev->name, ((u_short *)skb->data)[6], + &skb->data[6], skb->data, + (int)skb->data, (int)skb->len ); + } + + /* We're not prepared for the int until the last flags are set/reset. And + * the int may happen already after setting the OWN_CHIP... */ + spin_lock_irqsave (&lp->devlock, flags); + + /* Mask to ring buffer boundary. */ + entry = lp->cur_tx & TX_RING_MOD_MASK; + head = &(MEM->tx_head[entry]); + + /* Caution: the write order is important here, set the "ownership" bits + * last. + */ + + + head->length = -len; + head->misc = 0; + lp->memcpy_f( PKTBUF_ADDR(head), (void *)skb->data, skb->len ); + head->flag = TMD1_OWN_CHIP | TMD1_ENP | TMD1_STP; + dev->stats.tx_bytes += skb->len; + dev_kfree_skb( skb ); + lp->cur_tx++; + while( lp->cur_tx >= TX_RING_SIZE && lp->dirty_tx >= TX_RING_SIZE ) { + lp->cur_tx -= TX_RING_SIZE; + lp->dirty_tx -= TX_RING_SIZE; + } + + /* Trigger an immediate send poll. */ + DREG = CSR0_INEA | CSR0_TDMD; + + if ((MEM->tx_head[(entry+1) & TX_RING_MOD_MASK].flag & TMD1_OWN) == + TMD1_OWN_HOST) + netif_start_queue (dev); + else + lp->tx_full = 1; + spin_unlock_irqrestore (&lp->devlock, flags); + + return NETDEV_TX_OK; +} + +/* The LANCE interrupt handler. */ + +static irqreturn_t lance_interrupt( int irq, void *dev_id ) +{ + struct net_device *dev = dev_id; + struct lance_private *lp; + struct lance_ioreg *IO; + int csr0, boguscnt = 10; + int handled = 0; + + if (dev == NULL) { + DPRINTK( 1, ( "lance_interrupt(): interrupt for unknown device.\n" )); + return IRQ_NONE; + } + + lp = netdev_priv(dev); + IO = lp->iobase; + spin_lock (&lp->devlock); + + AREG = CSR0; + + while( ((csr0 = DREG) & (CSR0_ERR | CSR0_TINT | CSR0_RINT)) && + --boguscnt >= 0) { + handled = 1; + /* Acknowledge all of the current interrupt sources ASAP. */ + DREG = csr0 & ~(CSR0_INIT | CSR0_STRT | CSR0_STOP | + CSR0_TDMD | CSR0_INEA); + + DPRINTK( 2, ( "%s: interrupt csr0=%04x new csr=%04x.\n", + dev->name, csr0, DREG )); + + if (csr0 & CSR0_RINT) /* Rx interrupt */ + lance_rx( dev ); + + if (csr0 & CSR0_TINT) { /* Tx-done interrupt */ + int dirty_tx = lp->dirty_tx; + + while( dirty_tx < lp->cur_tx) { + int entry = dirty_tx & TX_RING_MOD_MASK; + int status = MEM->tx_head[entry].flag; + + if (status & TMD1_OWN_CHIP) + break; /* It still hasn't been Txed */ + + MEM->tx_head[entry].flag = 0; + + if (status & TMD1_ERR) { + /* There was an major error, log it. */ + int err_status = MEM->tx_head[entry].misc; + dev->stats.tx_errors++; + if (err_status & TMD3_RTRY) dev->stats.tx_aborted_errors++; + if (err_status & TMD3_LCAR) dev->stats.tx_carrier_errors++; + if (err_status & TMD3_LCOL) dev->stats.tx_window_errors++; + if (err_status & TMD3_UFLO) { + /* Ackk! On FIFO errors the Tx unit is turned off! */ + dev->stats.tx_fifo_errors++; + /* Remove this verbosity later! */ + DPRINTK( 1, ( "%s: Tx FIFO error! Status %04x\n", + dev->name, csr0 )); + /* Restart the chip. */ + DREG = CSR0_STRT; + } + } else { + if (status & (TMD1_MORE | TMD1_ONE | TMD1_DEF)) + dev->stats.collisions++; + dev->stats.tx_packets++; + } + + /* XXX MSch: free skb?? */ + dirty_tx++; + } + +#ifndef final_version + if (lp->cur_tx - dirty_tx >= TX_RING_SIZE) { + DPRINTK( 0, ( "out-of-sync dirty pointer," + " %d vs. %d, full=%ld.\n", + dirty_tx, lp->cur_tx, lp->tx_full )); + dirty_tx += TX_RING_SIZE; + } +#endif + + if (lp->tx_full && (netif_queue_stopped(dev)) && + dirty_tx > lp->cur_tx - TX_RING_SIZE + 2) { + /* The ring is no longer full, clear tbusy. */ + lp->tx_full = 0; + netif_wake_queue (dev); + } + + lp->dirty_tx = dirty_tx; + } + + /* Log misc errors. */ + if (csr0 & CSR0_BABL) dev->stats.tx_errors++; /* Tx babble. */ + if (csr0 & CSR0_MISS) dev->stats.rx_errors++; /* Missed a Rx frame. */ + if (csr0 & CSR0_MERR) { + DPRINTK( 1, ( "%s: Bus master arbitration failure (?!?), " + "status %04x.\n", dev->name, csr0 )); + /* Restart the chip. */ + DREG = CSR0_STRT; + } + } + + /* Clear any other interrupt, and set interrupt enable. */ + DREG = CSR0_BABL | CSR0_CERR | CSR0_MISS | CSR0_MERR | + CSR0_IDON | CSR0_INEA; + + DPRINTK( 2, ( "%s: exiting interrupt, csr0=%#04x.\n", + dev->name, DREG )); + + spin_unlock (&lp->devlock); + return IRQ_RETVAL(handled); +} + + +static int lance_rx( struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + int entry = lp->cur_rx & RX_RING_MOD_MASK; + int i; + + DPRINTK( 2, ( "%s: rx int, flag=%04x\n", dev->name, + MEM->rx_head[entry].flag )); + + /* If we own the next entry, it's a new packet. Send it up. */ + while( (MEM->rx_head[entry].flag & RMD1_OWN) == RMD1_OWN_HOST ) { + struct lance_rx_head *head = &(MEM->rx_head[entry]); + int status = head->flag; + + if (status != (RMD1_ENP|RMD1_STP)) { /* There was an error. */ + /* There is a tricky error noted by John Murphy, + <murf@perftech.com> to Russ Nelson: Even with full-sized + buffers it's possible for a jabber packet to use two + buffers, with only the last correctly noting the error. */ + if (status & RMD1_ENP) /* Only count a general error at the */ + dev->stats.rx_errors++; /* end of a packet.*/ + if (status & RMD1_FRAM) dev->stats.rx_frame_errors++; + if (status & RMD1_OFLO) dev->stats.rx_over_errors++; + if (status & RMD1_CRC) dev->stats.rx_crc_errors++; + if (status & RMD1_BUFF) dev->stats.rx_fifo_errors++; + head->flag &= (RMD1_ENP|RMD1_STP); + } else { + /* Malloc up new buffer, compatible with net-3. */ + short pkt_len = head->msg_length & 0xfff; + struct sk_buff *skb; + + if (pkt_len < 60) { + printk( "%s: Runt packet!\n", dev->name ); + dev->stats.rx_errors++; + } + else { + skb = dev_alloc_skb( pkt_len+2 ); + if (skb == NULL) { + DPRINTK( 1, ( "%s: Memory squeeze, deferring packet.\n", + dev->name )); + for( i = 0; i < RX_RING_SIZE; i++ ) + if (MEM->rx_head[(entry+i) & RX_RING_MOD_MASK].flag & + RMD1_OWN_CHIP) + break; + + if (i > RX_RING_SIZE - 2) { + dev->stats.rx_dropped++; + head->flag |= RMD1_OWN_CHIP; + lp->cur_rx++; + } + break; + } + + if (lance_debug >= 3) { + u_char *data = PKTBUF_ADDR(head); + + printk(KERN_DEBUG "%s: RX pkt type 0x%04x from %pM to %pM " + "data %02x %02x %02x %02x %02x %02x %02x %02x " + "len %d\n", + dev->name, ((u_short *)data)[6], + &data[6], data, + data[15], data[16], data[17], data[18], + data[19], data[20], data[21], data[22], + pkt_len); + } + + skb_reserve( skb, 2 ); /* 16 byte align */ + skb_put( skb, pkt_len ); /* Make room */ + lp->memcpy_f( skb->data, PKTBUF_ADDR(head), pkt_len ); + skb->protocol = eth_type_trans( skb, dev ); + netif_rx( skb ); + dev->stats.rx_packets++; + dev->stats.rx_bytes += pkt_len; + } + } + + head->flag |= RMD1_OWN_CHIP; + entry = (++lp->cur_rx) & RX_RING_MOD_MASK; + } + lp->cur_rx &= RX_RING_MOD_MASK; + + /* From lance.c (Donald Becker): */ + /* We should check that at least two ring entries are free. If not, + we should free one and mark stats->rx_dropped++. */ + + return 0; +} + + +static int lance_close( struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_ioreg *IO = lp->iobase; + + netif_stop_queue (dev); + + AREG = CSR0; + + DPRINTK( 2, ( "%s: Shutting down ethercard, status was %2.2x.\n", + dev->name, DREG )); + + /* We stop the LANCE here -- it occasionally polls + memory if we don't. */ + DREG = CSR0_STOP; + + return 0; +} + + +/* Set or clear the multicast filter for this adaptor. + num_addrs == -1 Promiscuous mode, receive all packets + num_addrs == 0 Normal mode, clear multicast list + num_addrs > 0 Multicast mode, receive normal and MC packets, and do + best-effort filtering. + */ + +static void set_multicast_list( struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_ioreg *IO = lp->iobase; + + if (netif_running(dev)) + /* Only possible if board is already started */ + return; + + /* We take the simple way out and always enable promiscuous mode. */ + DREG = CSR0_STOP; /* Temporarily stop the lance. */ + + if (dev->flags & IFF_PROMISC) { + /* Log any net taps. */ + DPRINTK( 2, ( "%s: Promiscuous mode enabled.\n", dev->name )); + REGA( CSR15 ) = 0x8000; /* Set promiscuous mode */ + } else { + short multicast_table[4]; + int num_addrs = netdev_mc_count(dev); + int i; + /* We don't use the multicast table, but rely on upper-layer + * filtering. */ + memset( multicast_table, (num_addrs == 0) ? 0 : -1, + sizeof(multicast_table) ); + for( i = 0; i < 4; i++ ) + REGA( CSR8+i ) = multicast_table[i]; + REGA( CSR15 ) = 0; /* Unset promiscuous mode */ + } + + /* + * Always set BSWP after a STOP as STOP puts it back into + * little endian mode. + */ + REGA( CSR3 ) = CSR3_BSWP | (lp->cardtype == PAM_CARD ? CSR3_ACON : 0); + + /* Resume normal operation and reset AREG to CSR0 */ + REGA( CSR0 ) = CSR0_IDON | CSR0_INEA | CSR0_STRT; +} + + +/* This is needed for old RieblCards and possible for new RieblCards */ + +static int lance_set_mac_address( struct net_device *dev, void *addr ) +{ + struct lance_private *lp = netdev_priv(dev); + struct sockaddr *saddr = addr; + int i; + + if (lp->cardtype != OLD_RIEBL && lp->cardtype != NEW_RIEBL) + return -EOPNOTSUPP; + + if (netif_running(dev)) { + /* Only possible while card isn't started */ + DPRINTK( 1, ( "%s: hwaddr can be set only while card isn't open.\n", + dev->name )); + return -EIO; + } + + memcpy( dev->dev_addr, saddr->sa_data, dev->addr_len ); + for( i = 0; i < 6; i++ ) + MEM->init.hwaddr[i] = dev->dev_addr[i^1]; /* <- 16 bit swap! */ + lp->memcpy_f( RIEBL_HWADDR_ADDR, dev->dev_addr, 6 ); + /* set also the magic for future sessions */ + *RIEBL_MAGIC_ADDR = RIEBL_MAGIC; + + return 0; +} + + +#ifdef MODULE +static struct net_device *atarilance_dev; + +static int __init atarilance_module_init(void) +{ + atarilance_dev = atarilance_probe(-1); + if (IS_ERR(atarilance_dev)) + return PTR_ERR(atarilance_dev); + return 0; +} + +static void __exit atarilance_module_exit(void) +{ + unregister_netdev(atarilance_dev); + free_irq(atarilance_dev->irq, atarilance_dev); + free_netdev(atarilance_dev); +} +module_init(atarilance_module_init); +module_exit(atarilance_module_exit); +#endif /* MODULE */ + + +/* + * Local variables: + * c-indent-level: 4 + * tab-width: 4 + * End: + */ diff --git a/drivers/net/ethernet/amd/au1000_eth.c b/drivers/net/ethernet/amd/au1000_eth.c new file mode 100644 index 000000000000..82386677bb8c --- /dev/null +++ b/drivers/net/ethernet/amd/au1000_eth.c @@ -0,0 +1,1332 @@ +/* + * + * Alchemy Au1x00 ethernet driver + * + * Copyright 2001-2003, 2006 MontaVista Software Inc. + * Copyright 2002 TimeSys Corp. + * Added ethtool/mii-tool support, + * Copyright 2004 Matt Porter <mporter@kernel.crashing.org> + * Update: 2004 Bjoern Riemer, riemer@fokus.fraunhofer.de + * or riemer@riemer-nt.de: fixed the link beat detection with + * ioctls (SIOCGMIIPHY) + * Copyright 2006 Herbert Valerio Riedel <hvr@gnu.org> + * converted to use linux-2.6.x's PHY framework + * + * Author: MontaVista Software, Inc. + * ppopov@mvista.com or source@mvista.com + * + * ######################################################################## + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * ######################################################################## + * + * + */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/capability.h> +#include <linux/dma-mapping.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/in.h> +#include <linux/ioport.h> +#include <linux/bitops.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/ethtool.h> +#include <linux/mii.h> +#include <linux/skbuff.h> +#include <linux/delay.h> +#include <linux/crc32.h> +#include <linux/phy.h> +#include <linux/platform_device.h> +#include <linux/cpu.h> +#include <linux/io.h> + +#include <asm/mipsregs.h> +#include <asm/irq.h> +#include <asm/processor.h> + +#include <au1000.h> +#include <au1xxx_eth.h> +#include <prom.h> + +#include "au1000_eth.h" + +#ifdef AU1000_ETH_DEBUG +static int au1000_debug = 5; +#else +static int au1000_debug = 3; +#endif + +#define AU1000_DEF_MSG_ENABLE (NETIF_MSG_DRV | \ + NETIF_MSG_PROBE | \ + NETIF_MSG_LINK) + +#define DRV_NAME "au1000_eth" +#define DRV_VERSION "1.7" +#define DRV_AUTHOR "Pete Popov <ppopov@embeddedalley.com>" +#define DRV_DESC "Au1xxx on-chip Ethernet driver" + +MODULE_AUTHOR(DRV_AUTHOR); +MODULE_DESCRIPTION(DRV_DESC); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); + +/* + * Theory of operation + * + * The Au1000 MACs use a simple rx and tx descriptor ring scheme. + * There are four receive and four transmit descriptors. These + * descriptors are not in memory; rather, they are just a set of + * hardware registers. + * + * Since the Au1000 has a coherent data cache, the receive and + * transmit buffers are allocated from the KSEG0 segment. The + * hardware registers, however, are still mapped at KSEG1 to + * make sure there's no out-of-order writes, and that all writes + * complete immediately. + */ + +/* + * board-specific configurations + * + * PHY detection algorithm + * + * If phy_static_config is undefined, the PHY setup is + * autodetected: + * + * mii_probe() first searches the current MAC's MII bus for a PHY, + * selecting the first (or last, if phy_search_highest_addr is + * defined) PHY address not already claimed by another netdev. + * + * If nothing was found that way when searching for the 2nd ethernet + * controller's PHY and phy1_search_mac0 is defined, then + * the first MII bus is searched as well for an unclaimed PHY; this is + * needed in case of a dual-PHY accessible only through the MAC0's MII + * bus. + * + * Finally, if no PHY is found, then the corresponding ethernet + * controller is not registered to the network subsystem. + */ + +/* autodetection defaults: phy1_search_mac0 */ + +/* static PHY setup + * + * most boards PHY setup should be detectable properly with the + * autodetection algorithm in mii_probe(), but in some cases (e.g. if + * you have a switch attached, or want to use the PHY's interrupt + * notification capabilities) you can provide a static PHY + * configuration here + * + * IRQs may only be set, if a PHY address was configured + * If a PHY address is given, also a bus id is required to be set + * + * ps: make sure the used irqs are configured properly in the board + * specific irq-map + */ + +static void au1000_enable_mac(struct net_device *dev, int force_reset) +{ + unsigned long flags; + struct au1000_private *aup = netdev_priv(dev); + + spin_lock_irqsave(&aup->lock, flags); + + if (force_reset || (!aup->mac_enabled)) { + writel(MAC_EN_CLOCK_ENABLE, aup->enable); + au_sync_delay(2); + writel((MAC_EN_RESET0 | MAC_EN_RESET1 | MAC_EN_RESET2 + | MAC_EN_CLOCK_ENABLE), aup->enable); + au_sync_delay(2); + + aup->mac_enabled = 1; + } + + spin_unlock_irqrestore(&aup->lock, flags); +} + +/* + * MII operations + */ +static int au1000_mdio_read(struct net_device *dev, int phy_addr, int reg) +{ + struct au1000_private *aup = netdev_priv(dev); + u32 *const mii_control_reg = &aup->mac->mii_control; + u32 *const mii_data_reg = &aup->mac->mii_data; + u32 timedout = 20; + u32 mii_control; + + while (readl(mii_control_reg) & MAC_MII_BUSY) { + mdelay(1); + if (--timedout == 0) { + netdev_err(dev, "read_MII busy timeout!!\n"); + return -1; + } + } + + mii_control = MAC_SET_MII_SELECT_REG(reg) | + MAC_SET_MII_SELECT_PHY(phy_addr) | MAC_MII_READ; + + writel(mii_control, mii_control_reg); + + timedout = 20; + while (readl(mii_control_reg) & MAC_MII_BUSY) { + mdelay(1); + if (--timedout == 0) { + netdev_err(dev, "mdio_read busy timeout!!\n"); + return -1; + } + } + return readl(mii_data_reg); +} + +static void au1000_mdio_write(struct net_device *dev, int phy_addr, + int reg, u16 value) +{ + struct au1000_private *aup = netdev_priv(dev); + u32 *const mii_control_reg = &aup->mac->mii_control; + u32 *const mii_data_reg = &aup->mac->mii_data; + u32 timedout = 20; + u32 mii_control; + + while (readl(mii_control_reg) & MAC_MII_BUSY) { + mdelay(1); + if (--timedout == 0) { + netdev_err(dev, "mdio_write busy timeout!!\n"); + return; + } + } + + mii_control = MAC_SET_MII_SELECT_REG(reg) | + MAC_SET_MII_SELECT_PHY(phy_addr) | MAC_MII_WRITE; + + writel(value, mii_data_reg); + writel(mii_control, mii_control_reg); +} + +static int au1000_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum) +{ + /* WARNING: bus->phy_map[phy_addr].attached_dev == dev does + * _NOT_ hold (e.g. when PHY is accessed through other MAC's MII bus) + */ + struct net_device *const dev = bus->priv; + + /* make sure the MAC associated with this + * mii_bus is enabled + */ + au1000_enable_mac(dev, 0); + + return au1000_mdio_read(dev, phy_addr, regnum); +} + +static int au1000_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum, + u16 value) +{ + struct net_device *const dev = bus->priv; + + /* make sure the MAC associated with this + * mii_bus is enabled + */ + au1000_enable_mac(dev, 0); + + au1000_mdio_write(dev, phy_addr, regnum, value); + return 0; +} + +static int au1000_mdiobus_reset(struct mii_bus *bus) +{ + struct net_device *const dev = bus->priv; + + /* make sure the MAC associated with this + * mii_bus is enabled + */ + au1000_enable_mac(dev, 0); + + return 0; +} + +static void au1000_hard_stop(struct net_device *dev) +{ + struct au1000_private *aup = netdev_priv(dev); + u32 reg; + + netif_dbg(aup, drv, dev, "hard stop\n"); + + reg = readl(&aup->mac->control); + reg &= ~(MAC_RX_ENABLE | MAC_TX_ENABLE); + writel(reg, &aup->mac->control); + au_sync_delay(10); +} + +static void au1000_enable_rx_tx(struct net_device *dev) +{ + struct au1000_private *aup = netdev_priv(dev); + u32 reg; + + netif_dbg(aup, hw, dev, "enable_rx_tx\n"); + + reg = readl(&aup->mac->control); + reg |= (MAC_RX_ENABLE | MAC_TX_ENABLE); + writel(reg, &aup->mac->control); + au_sync_delay(10); +} + +static void +au1000_adjust_link(struct net_device *dev) +{ + struct au1000_private *aup = netdev_priv(dev); + struct phy_device *phydev = aup->phy_dev; + unsigned long flags; + u32 reg; + + int status_change = 0; + + BUG_ON(!aup->phy_dev); + + spin_lock_irqsave(&aup->lock, flags); + + if (phydev->link && (aup->old_speed != phydev->speed)) { + /* speed changed */ + + switch (phydev->speed) { + case SPEED_10: + case SPEED_100: + break; + default: + netdev_warn(dev, "Speed (%d) is not 10/100 ???\n", + phydev->speed); + break; + } + + aup->old_speed = phydev->speed; + + status_change = 1; + } + + if (phydev->link && (aup->old_duplex != phydev->duplex)) { + /* duplex mode changed */ + + /* switching duplex mode requires to disable rx and tx! */ + au1000_hard_stop(dev); + + reg = readl(&aup->mac->control); + if (DUPLEX_FULL == phydev->duplex) { + reg |= MAC_FULL_DUPLEX; + reg &= ~MAC_DISABLE_RX_OWN; + } else { + reg &= ~MAC_FULL_DUPLEX; + reg |= MAC_DISABLE_RX_OWN; + } + writel(reg, &aup->mac->control); + au_sync_delay(1); + + au1000_enable_rx_tx(dev); + aup->old_duplex = phydev->duplex; + + status_change = 1; + } + + if (phydev->link != aup->old_link) { + /* link state changed */ + + if (!phydev->link) { + /* link went down */ + aup->old_speed = 0; + aup->old_duplex = -1; + } + + aup->old_link = phydev->link; + status_change = 1; + } + + spin_unlock_irqrestore(&aup->lock, flags); + + if (status_change) { + if (phydev->link) + netdev_info(dev, "link up (%d/%s)\n", + phydev->speed, + DUPLEX_FULL == phydev->duplex ? "Full" : "Half"); + else + netdev_info(dev, "link down\n"); + } +} + +static int au1000_mii_probe(struct net_device *dev) +{ + struct au1000_private *const aup = netdev_priv(dev); + struct phy_device *phydev = NULL; + int phy_addr; + + if (aup->phy_static_config) { + BUG_ON(aup->mac_id < 0 || aup->mac_id > 1); + + if (aup->phy_addr) + phydev = aup->mii_bus->phy_map[aup->phy_addr]; + else + netdev_info(dev, "using PHY-less setup\n"); + return 0; + } + + /* find the first (lowest address) PHY + * on the current MAC's MII bus + */ + for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) + if (aup->mii_bus->phy_map[phy_addr]) { + phydev = aup->mii_bus->phy_map[phy_addr]; + if (!aup->phy_search_highest_addr) + /* break out with first one found */ + break; + } + + if (aup->phy1_search_mac0) { + /* try harder to find a PHY */ + if (!phydev && (aup->mac_id == 1)) { + /* no PHY found, maybe we have a dual PHY? */ + dev_info(&dev->dev, ": no PHY found on MAC1, " + "let's see if it's attached to MAC0...\n"); + + /* find the first (lowest address) non-attached + * PHY on the MAC0 MII bus + */ + for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { + struct phy_device *const tmp_phydev = + aup->mii_bus->phy_map[phy_addr]; + + if (aup->mac_id == 1) + break; + + /* no PHY here... */ + if (!tmp_phydev) + continue; + + /* already claimed by MAC0 */ + if (tmp_phydev->attached_dev) + continue; + + phydev = tmp_phydev; + break; /* found it */ + } + } + } + + if (!phydev) { + netdev_err(dev, "no PHY found\n"); + return -1; + } + + /* now we are supposed to have a proper phydev, to attach to... */ + BUG_ON(phydev->attached_dev); + + phydev = phy_connect(dev, dev_name(&phydev->dev), &au1000_adjust_link, + 0, PHY_INTERFACE_MODE_MII); + + if (IS_ERR(phydev)) { + netdev_err(dev, "Could not attach to PHY\n"); + return PTR_ERR(phydev); + } + + /* mask with MAC supported features */ + phydev->supported &= (SUPPORTED_10baseT_Half + | SUPPORTED_10baseT_Full + | SUPPORTED_100baseT_Half + | SUPPORTED_100baseT_Full + | SUPPORTED_Autoneg + /* | SUPPORTED_Pause | SUPPORTED_Asym_Pause */ + | SUPPORTED_MII + | SUPPORTED_TP); + + phydev->advertising = phydev->supported; + + aup->old_link = 0; + aup->old_speed = 0; + aup->old_duplex = -1; + aup->phy_dev = phydev; + + netdev_info(dev, "attached PHY driver [%s] " + "(mii_bus:phy_addr=%s, irq=%d)\n", + phydev->drv->name, dev_name(&phydev->dev), phydev->irq); + + return 0; +} + + +/* + * Buffer allocation/deallocation routines. The buffer descriptor returned + * has the virtual and dma address of a buffer suitable for + * both, receive and transmit operations. + */ +static struct db_dest *au1000_GetFreeDB(struct au1000_private *aup) +{ + struct db_dest *pDB; + pDB = aup->pDBfree; + + if (pDB) + aup->pDBfree = pDB->pnext; + + return pDB; +} + +void au1000_ReleaseDB(struct au1000_private *aup, struct db_dest *pDB) +{ + struct db_dest *pDBfree = aup->pDBfree; + if (pDBfree) + pDBfree->pnext = pDB; + aup->pDBfree = pDB; +} + +static void au1000_reset_mac_unlocked(struct net_device *dev) +{ + struct au1000_private *const aup = netdev_priv(dev); + int i; + + au1000_hard_stop(dev); + + writel(MAC_EN_CLOCK_ENABLE, aup->enable); + au_sync_delay(2); + writel(0, aup->enable); + au_sync_delay(2); + + aup->tx_full = 0; + for (i = 0; i < NUM_RX_DMA; i++) { + /* reset control bits */ + aup->rx_dma_ring[i]->buff_stat &= ~0xf; + } + for (i = 0; i < NUM_TX_DMA; i++) { + /* reset control bits */ + aup->tx_dma_ring[i]->buff_stat &= ~0xf; + } + + aup->mac_enabled = 0; + +} + +static void au1000_reset_mac(struct net_device *dev) +{ + struct au1000_private *const aup = netdev_priv(dev); + unsigned long flags; + + netif_dbg(aup, hw, dev, "reset mac, aup %x\n", + (unsigned)aup); + + spin_lock_irqsave(&aup->lock, flags); + + au1000_reset_mac_unlocked(dev); + + spin_unlock_irqrestore(&aup->lock, flags); +} + +/* + * Setup the receive and transmit "rings". These pointers are the addresses + * of the rx and tx MAC DMA registers so they are fixed by the hardware -- + * these are not descriptors sitting in memory. + */ +static void +au1000_setup_hw_rings(struct au1000_private *aup, u32 rx_base, u32 tx_base) +{ + int i; + + for (i = 0; i < NUM_RX_DMA; i++) { + aup->rx_dma_ring[i] = + (struct rx_dma *) + (rx_base + sizeof(struct rx_dma)*i); + } + for (i = 0; i < NUM_TX_DMA; i++) { + aup->tx_dma_ring[i] = + (struct tx_dma *) + (tx_base + sizeof(struct tx_dma)*i); + } +} + +/* + * ethtool operations + */ + +static int au1000_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct au1000_private *aup = netdev_priv(dev); + + if (aup->phy_dev) + return phy_ethtool_gset(aup->phy_dev, cmd); + + return -EINVAL; +} + +static int au1000_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct au1000_private *aup = netdev_priv(dev); + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + if (aup->phy_dev) + return phy_ethtool_sset(aup->phy_dev, cmd); + + return -EINVAL; +} + +static void +au1000_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) +{ + struct au1000_private *aup = netdev_priv(dev); + + strcpy(info->driver, DRV_NAME); + strcpy(info->version, DRV_VERSION); + info->fw_version[0] = '\0'; + sprintf(info->bus_info, "%s %d", DRV_NAME, aup->mac_id); + info->regdump_len = 0; +} + +static void au1000_set_msglevel(struct net_device *dev, u32 value) +{ + struct au1000_private *aup = netdev_priv(dev); + aup->msg_enable = value; +} + +static u32 au1000_get_msglevel(struct net_device *dev) +{ + struct au1000_private *aup = netdev_priv(dev); + return aup->msg_enable; +} + +static const struct ethtool_ops au1000_ethtool_ops = { + .get_settings = au1000_get_settings, + .set_settings = au1000_set_settings, + .get_drvinfo = au1000_get_drvinfo, + .get_link = ethtool_op_get_link, + .get_msglevel = au1000_get_msglevel, + .set_msglevel = au1000_set_msglevel, +}; + + +/* + * Initialize the interface. + * + * When the device powers up, the clocks are disabled and the + * mac is in reset state. When the interface is closed, we + * do the same -- reset the device and disable the clocks to + * conserve power. Thus, whenever au1000_init() is called, + * the device should already be in reset state. + */ +static int au1000_init(struct net_device *dev) +{ + struct au1000_private *aup = netdev_priv(dev); + unsigned long flags; + int i; + u32 control; + + netif_dbg(aup, hw, dev, "au1000_init\n"); + + /* bring the device out of reset */ + au1000_enable_mac(dev, 1); + + spin_lock_irqsave(&aup->lock, flags); + + writel(0, &aup->mac->control); + aup->tx_head = (aup->tx_dma_ring[0]->buff_stat & 0xC) >> 2; + aup->tx_tail = aup->tx_head; + aup->rx_head = (aup->rx_dma_ring[0]->buff_stat & 0xC) >> 2; + + writel(dev->dev_addr[5]<<8 | dev->dev_addr[4], + &aup->mac->mac_addr_high); + writel(dev->dev_addr[3]<<24 | dev->dev_addr[2]<<16 | + dev->dev_addr[1]<<8 | dev->dev_addr[0], + &aup->mac->mac_addr_low); + + + for (i = 0; i < NUM_RX_DMA; i++) + aup->rx_dma_ring[i]->buff_stat |= RX_DMA_ENABLE; + + au_sync(); + + control = MAC_RX_ENABLE | MAC_TX_ENABLE; +#ifndef CONFIG_CPU_LITTLE_ENDIAN + control |= MAC_BIG_ENDIAN; +#endif + if (aup->phy_dev) { + if (aup->phy_dev->link && (DUPLEX_FULL == aup->phy_dev->duplex)) + control |= MAC_FULL_DUPLEX; + else + control |= MAC_DISABLE_RX_OWN; + } else { /* PHY-less op, assume full-duplex */ + control |= MAC_FULL_DUPLEX; + } + + writel(control, &aup->mac->control); + writel(0x8100, &aup->mac->vlan1_tag); /* activate vlan support */ + au_sync(); + + spin_unlock_irqrestore(&aup->lock, flags); + return 0; +} + +static inline void au1000_update_rx_stats(struct net_device *dev, u32 status) +{ + struct net_device_stats *ps = &dev->stats; + + ps->rx_packets++; + if (status & RX_MCAST_FRAME) + ps->multicast++; + + if (status & RX_ERROR) { + ps->rx_errors++; + if (status & RX_MISSED_FRAME) + ps->rx_missed_errors++; + if (status & (RX_OVERLEN | RX_RUNT | RX_LEN_ERROR)) + ps->rx_length_errors++; + if (status & RX_CRC_ERROR) + ps->rx_crc_errors++; + if (status & RX_COLL) + ps->collisions++; + } else + ps->rx_bytes += status & RX_FRAME_LEN_MASK; + +} + +/* + * Au1000 receive routine. + */ +static int au1000_rx(struct net_device *dev) +{ + struct au1000_private *aup = netdev_priv(dev); + struct sk_buff *skb; + struct rx_dma *prxd; + u32 buff_stat, status; + struct db_dest *pDB; + u32 frmlen; + + netif_dbg(aup, rx_status, dev, "au1000_rx head %d\n", aup->rx_head); + + prxd = aup->rx_dma_ring[aup->rx_head]; + buff_stat = prxd->buff_stat; + while (buff_stat & RX_T_DONE) { + status = prxd->status; + pDB = aup->rx_db_inuse[aup->rx_head]; + au1000_update_rx_stats(dev, status); + if (!(status & RX_ERROR)) { + + /* good frame */ + frmlen = (status & RX_FRAME_LEN_MASK); + frmlen -= 4; /* Remove FCS */ + skb = dev_alloc_skb(frmlen + 2); + if (skb == NULL) { + netdev_err(dev, "Memory squeeze, dropping packet.\n"); + dev->stats.rx_dropped++; + continue; + } + skb_reserve(skb, 2); /* 16 byte IP header align */ + skb_copy_to_linear_data(skb, + (unsigned char *)pDB->vaddr, frmlen); + skb_put(skb, frmlen); + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); /* pass the packet to upper layers */ + } else { + if (au1000_debug > 4) { + pr_err("rx_error(s):"); + if (status & RX_MISSED_FRAME) + pr_cont(" miss"); + if (status & RX_WDOG_TIMER) + pr_cont(" wdog"); + if (status & RX_RUNT) + pr_cont(" runt"); + if (status & RX_OVERLEN) + pr_cont(" overlen"); + if (status & RX_COLL) + pr_cont(" coll"); + if (status & RX_MII_ERROR) + pr_cont(" mii error"); + if (status & RX_CRC_ERROR) + pr_cont(" crc error"); + if (status & RX_LEN_ERROR) + pr_cont(" len error"); + if (status & RX_U_CNTRL_FRAME) + pr_cont(" u control frame"); + pr_cont("\n"); + } + } + prxd->buff_stat = (u32)(pDB->dma_addr | RX_DMA_ENABLE); + aup->rx_head = (aup->rx_head + 1) & (NUM_RX_DMA - 1); + au_sync(); + + /* next descriptor */ + prxd = aup->rx_dma_ring[aup->rx_head]; + buff_stat = prxd->buff_stat; + } + return 0; +} + +static void au1000_update_tx_stats(struct net_device *dev, u32 status) +{ + struct au1000_private *aup = netdev_priv(dev); + struct net_device_stats *ps = &dev->stats; + + if (status & TX_FRAME_ABORTED) { + if (!aup->phy_dev || (DUPLEX_FULL == aup->phy_dev->duplex)) { + if (status & (TX_JAB_TIMEOUT | TX_UNDERRUN)) { + /* any other tx errors are only valid + * in half duplex mode + */ + ps->tx_errors++; + ps->tx_aborted_errors++; + } + } else { + ps->tx_errors++; + ps->tx_aborted_errors++; + if (status & (TX_NO_CARRIER | TX_LOSS_CARRIER)) + ps->tx_carrier_errors++; + } + } +} + +/* + * Called from the interrupt service routine to acknowledge + * the TX DONE bits. This is a must if the irq is setup as + * edge triggered. + */ +static void au1000_tx_ack(struct net_device *dev) +{ + struct au1000_private *aup = netdev_priv(dev); + struct tx_dma *ptxd; + + ptxd = aup->tx_dma_ring[aup->tx_tail]; + + while (ptxd->buff_stat & TX_T_DONE) { + au1000_update_tx_stats(dev, ptxd->status); + ptxd->buff_stat &= ~TX_T_DONE; + ptxd->len = 0; + au_sync(); + + aup->tx_tail = (aup->tx_tail + 1) & (NUM_TX_DMA - 1); + ptxd = aup->tx_dma_ring[aup->tx_tail]; + + if (aup->tx_full) { + aup->tx_full = 0; + netif_wake_queue(dev); + } + } +} + +/* + * Au1000 interrupt service routine. + */ +static irqreturn_t au1000_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + + /* Handle RX interrupts first to minimize chance of overrun */ + + au1000_rx(dev); + au1000_tx_ack(dev); + return IRQ_RETVAL(1); +} + +static int au1000_open(struct net_device *dev) +{ + int retval; + struct au1000_private *aup = netdev_priv(dev); + + netif_dbg(aup, drv, dev, "open: dev=%p\n", dev); + + retval = request_irq(dev->irq, au1000_interrupt, 0, + dev->name, dev); + if (retval) { + netdev_err(dev, "unable to get IRQ %d\n", dev->irq); + return retval; + } + + retval = au1000_init(dev); + if (retval) { + netdev_err(dev, "error in au1000_init\n"); + free_irq(dev->irq, dev); + return retval; + } + + if (aup->phy_dev) { + /* cause the PHY state machine to schedule a link state check */ + aup->phy_dev->state = PHY_CHANGELINK; + phy_start(aup->phy_dev); + } + + netif_start_queue(dev); + + netif_dbg(aup, drv, dev, "open: Initialization done.\n"); + + return 0; +} + +static int au1000_close(struct net_device *dev) +{ + unsigned long flags; + struct au1000_private *const aup = netdev_priv(dev); + + netif_dbg(aup, drv, dev, "close: dev=%p\n", dev); + + if (aup->phy_dev) + phy_stop(aup->phy_dev); + + spin_lock_irqsave(&aup->lock, flags); + + au1000_reset_mac_unlocked(dev); + + /* stop the device */ + netif_stop_queue(dev); + + /* disable the interrupt */ + free_irq(dev->irq, dev); + spin_unlock_irqrestore(&aup->lock, flags); + + return 0; +} + +/* + * Au1000 transmit routine. + */ +static netdev_tx_t au1000_tx(struct sk_buff *skb, struct net_device *dev) +{ + struct au1000_private *aup = netdev_priv(dev); + struct net_device_stats *ps = &dev->stats; + struct tx_dma *ptxd; + u32 buff_stat; + struct db_dest *pDB; + int i; + + netif_dbg(aup, tx_queued, dev, "tx: aup %x len=%d, data=%p, head %d\n", + (unsigned)aup, skb->len, + skb->data, aup->tx_head); + + ptxd = aup->tx_dma_ring[aup->tx_head]; + buff_stat = ptxd->buff_stat; + if (buff_stat & TX_DMA_ENABLE) { + /* We've wrapped around and the transmitter is still busy */ + netif_stop_queue(dev); + aup->tx_full = 1; + return NETDEV_TX_BUSY; + } else if (buff_stat & TX_T_DONE) { + au1000_update_tx_stats(dev, ptxd->status); + ptxd->len = 0; + } + + if (aup->tx_full) { + aup->tx_full = 0; + netif_wake_queue(dev); + } + + pDB = aup->tx_db_inuse[aup->tx_head]; + skb_copy_from_linear_data(skb, (void *)pDB->vaddr, skb->len); + if (skb->len < ETH_ZLEN) { + for (i = skb->len; i < ETH_ZLEN; i++) + ((char *)pDB->vaddr)[i] = 0; + + ptxd->len = ETH_ZLEN; + } else + ptxd->len = skb->len; + + ps->tx_packets++; + ps->tx_bytes += ptxd->len; + + ptxd->buff_stat = pDB->dma_addr | TX_DMA_ENABLE; + au_sync(); + dev_kfree_skb(skb); + aup->tx_head = (aup->tx_head + 1) & (NUM_TX_DMA - 1); + return NETDEV_TX_OK; +} + +/* + * The Tx ring has been full longer than the watchdog timeout + * value. The transmitter must be hung? + */ +static void au1000_tx_timeout(struct net_device *dev) +{ + netdev_err(dev, "au1000_tx_timeout: dev=%p\n", dev); + au1000_reset_mac(dev); + au1000_init(dev); + dev->trans_start = jiffies; /* prevent tx timeout */ + netif_wake_queue(dev); +} + +static void au1000_multicast_list(struct net_device *dev) +{ + struct au1000_private *aup = netdev_priv(dev); + u32 reg; + + netif_dbg(aup, drv, dev, "%s: flags=%x\n", __func__, dev->flags); + reg = readl(&aup->mac->control); + if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ + reg |= MAC_PROMISCUOUS; + } else if ((dev->flags & IFF_ALLMULTI) || + netdev_mc_count(dev) > MULTICAST_FILTER_LIMIT) { + reg |= MAC_PASS_ALL_MULTI; + reg &= ~MAC_PROMISCUOUS; + netdev_info(dev, "Pass all multicast\n"); + } else { + struct netdev_hw_addr *ha; + u32 mc_filter[2]; /* Multicast hash filter */ + + mc_filter[1] = mc_filter[0] = 0; + netdev_for_each_mc_addr(ha, dev) + set_bit(ether_crc(ETH_ALEN, ha->addr)>>26, + (long *)mc_filter); + writel(mc_filter[1], &aup->mac->multi_hash_high); + writel(mc_filter[0], &aup->mac->multi_hash_low); + reg &= ~MAC_PROMISCUOUS; + reg |= MAC_HASH_MODE; + } + writel(reg, &aup->mac->control); +} + +static int au1000_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct au1000_private *aup = netdev_priv(dev); + + if (!netif_running(dev)) + return -EINVAL; + + if (!aup->phy_dev) + return -EINVAL; /* PHY not controllable */ + + return phy_mii_ioctl(aup->phy_dev, rq, cmd); +} + +static const struct net_device_ops au1000_netdev_ops = { + .ndo_open = au1000_open, + .ndo_stop = au1000_close, + .ndo_start_xmit = au1000_tx, + .ndo_set_rx_mode = au1000_multicast_list, + .ndo_do_ioctl = au1000_ioctl, + .ndo_tx_timeout = au1000_tx_timeout, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, + .ndo_change_mtu = eth_change_mtu, +}; + +static int __devinit au1000_probe(struct platform_device *pdev) +{ + static unsigned version_printed; + struct au1000_private *aup = NULL; + struct au1000_eth_platform_data *pd; + struct net_device *dev = NULL; + struct db_dest *pDB, *pDBfree; + int irq, i, err = 0; + struct resource *base, *macen; + + base = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!base) { + dev_err(&pdev->dev, "failed to retrieve base register\n"); + err = -ENODEV; + goto out; + } + + macen = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!macen) { + dev_err(&pdev->dev, "failed to retrieve MAC Enable register\n"); + err = -ENODEV; + goto out; + } + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "failed to retrieve IRQ\n"); + err = -ENODEV; + goto out; + } + + if (!request_mem_region(base->start, resource_size(base), + pdev->name)) { + dev_err(&pdev->dev, "failed to request memory region for base registers\n"); + err = -ENXIO; + goto out; + } + + if (!request_mem_region(macen->start, resource_size(macen), + pdev->name)) { + dev_err(&pdev->dev, "failed to request memory region for MAC enable register\n"); + err = -ENXIO; + goto err_request; + } + + dev = alloc_etherdev(sizeof(struct au1000_private)); + if (!dev) { + dev_err(&pdev->dev, "alloc_etherdev failed\n"); + err = -ENOMEM; + goto err_alloc; + } + + SET_NETDEV_DEV(dev, &pdev->dev); + platform_set_drvdata(pdev, dev); + aup = netdev_priv(dev); + + spin_lock_init(&aup->lock); + aup->msg_enable = (au1000_debug < 4 ? + AU1000_DEF_MSG_ENABLE : au1000_debug); + + /* Allocate the data buffers + * Snooping works fine with eth on all au1xxx + */ + aup->vaddr = (u32)dma_alloc_noncoherent(NULL, MAX_BUF_SIZE * + (NUM_TX_BUFFS + NUM_RX_BUFFS), + &aup->dma_addr, 0); + if (!aup->vaddr) { + dev_err(&pdev->dev, "failed to allocate data buffers\n"); + err = -ENOMEM; + goto err_vaddr; + } + + /* aup->mac is the base address of the MAC's registers */ + aup->mac = (struct mac_reg *) + ioremap_nocache(base->start, resource_size(base)); + if (!aup->mac) { + dev_err(&pdev->dev, "failed to ioremap MAC registers\n"); + err = -ENXIO; + goto err_remap1; + } + + /* Setup some variables for quick register address access */ + aup->enable = (u32 *)ioremap_nocache(macen->start, + resource_size(macen)); + if (!aup->enable) { + dev_err(&pdev->dev, "failed to ioremap MAC enable register\n"); + err = -ENXIO; + goto err_remap2; + } + aup->mac_id = pdev->id; + + if (pdev->id == 0) + au1000_setup_hw_rings(aup, MAC0_RX_DMA_ADDR, MAC0_TX_DMA_ADDR); + else if (pdev->id == 1) + au1000_setup_hw_rings(aup, MAC1_RX_DMA_ADDR, MAC1_TX_DMA_ADDR); + + /* set a random MAC now in case platform_data doesn't provide one */ + random_ether_addr(dev->dev_addr); + + writel(0, aup->enable); + aup->mac_enabled = 0; + + pd = pdev->dev.platform_data; + if (!pd) { + dev_info(&pdev->dev, "no platform_data passed," + " PHY search on MAC0\n"); + aup->phy1_search_mac0 = 1; + } else { + if (is_valid_ether_addr(pd->mac)) + memcpy(dev->dev_addr, pd->mac, 6); + + aup->phy_static_config = pd->phy_static_config; + aup->phy_search_highest_addr = pd->phy_search_highest_addr; + aup->phy1_search_mac0 = pd->phy1_search_mac0; + aup->phy_addr = pd->phy_addr; + aup->phy_busid = pd->phy_busid; + aup->phy_irq = pd->phy_irq; + } + + if (aup->phy_busid && aup->phy_busid > 0) { + dev_err(&pdev->dev, "MAC0-associated PHY attached 2nd MACs MII bus not supported yet\n"); + err = -ENODEV; + goto err_mdiobus_alloc; + } + + aup->mii_bus = mdiobus_alloc(); + if (aup->mii_bus == NULL) { + dev_err(&pdev->dev, "failed to allocate mdiobus structure\n"); + err = -ENOMEM; + goto err_mdiobus_alloc; + } + + aup->mii_bus->priv = dev; + aup->mii_bus->read = au1000_mdiobus_read; + aup->mii_bus->write = au1000_mdiobus_write; + aup->mii_bus->reset = au1000_mdiobus_reset; + aup->mii_bus->name = "au1000_eth_mii"; + snprintf(aup->mii_bus->id, MII_BUS_ID_SIZE, "%x", aup->mac_id); + aup->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL); + if (aup->mii_bus->irq == NULL) + goto err_out; + + for (i = 0; i < PHY_MAX_ADDR; ++i) + aup->mii_bus->irq[i] = PHY_POLL; + /* if known, set corresponding PHY IRQs */ + if (aup->phy_static_config) + if (aup->phy_irq && aup->phy_busid == aup->mac_id) + aup->mii_bus->irq[aup->phy_addr] = aup->phy_irq; + + err = mdiobus_register(aup->mii_bus); + if (err) { + dev_err(&pdev->dev, "failed to register MDIO bus\n"); + goto err_mdiobus_reg; + } + + if (au1000_mii_probe(dev) != 0) + goto err_out; + + pDBfree = NULL; + /* setup the data buffer descriptors and attach a buffer to each one */ + pDB = aup->db; + for (i = 0; i < (NUM_TX_BUFFS+NUM_RX_BUFFS); i++) { + pDB->pnext = pDBfree; + pDBfree = pDB; + pDB->vaddr = (u32 *)((unsigned)aup->vaddr + MAX_BUF_SIZE*i); + pDB->dma_addr = (dma_addr_t)virt_to_bus(pDB->vaddr); + pDB++; + } + aup->pDBfree = pDBfree; + + for (i = 0; i < NUM_RX_DMA; i++) { + pDB = au1000_GetFreeDB(aup); + if (!pDB) + goto err_out; + + aup->rx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr; + aup->rx_db_inuse[i] = pDB; + } + for (i = 0; i < NUM_TX_DMA; i++) { + pDB = au1000_GetFreeDB(aup); + if (!pDB) + goto err_out; + + aup->tx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr; + aup->tx_dma_ring[i]->len = 0; + aup->tx_db_inuse[i] = pDB; + } + + dev->base_addr = base->start; + dev->irq = irq; + dev->netdev_ops = &au1000_netdev_ops; + SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops); + dev->watchdog_timeo = ETH_TX_TIMEOUT; + + /* + * The boot code uses the ethernet controller, so reset it to start + * fresh. au1000_init() expects that the device is in reset state. + */ + au1000_reset_mac(dev); + + err = register_netdev(dev); + if (err) { + netdev_err(dev, "Cannot register net device, aborting.\n"); + goto err_out; + } + + netdev_info(dev, "Au1xx0 Ethernet found at 0x%lx, irq %d\n", + (unsigned long)base->start, irq); + if (version_printed++ == 0) + pr_info("%s version %s %s\n", + DRV_NAME, DRV_VERSION, DRV_AUTHOR); + + return 0; + +err_out: + if (aup->mii_bus != NULL) + mdiobus_unregister(aup->mii_bus); + + /* here we should have a valid dev plus aup-> register addresses + * so we can reset the mac properly. + */ + au1000_reset_mac(dev); + + for (i = 0; i < NUM_RX_DMA; i++) { + if (aup->rx_db_inuse[i]) + au1000_ReleaseDB(aup, aup->rx_db_inuse[i]); + } + for (i = 0; i < NUM_TX_DMA; i++) { + if (aup->tx_db_inuse[i]) + au1000_ReleaseDB(aup, aup->tx_db_inuse[i]); + } +err_mdiobus_reg: + mdiobus_free(aup->mii_bus); +err_mdiobus_alloc: + iounmap(aup->enable); +err_remap2: + iounmap(aup->mac); +err_remap1: + dma_free_noncoherent(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS), + (void *)aup->vaddr, aup->dma_addr); +err_vaddr: + free_netdev(dev); +err_alloc: + release_mem_region(macen->start, resource_size(macen)); +err_request: + release_mem_region(base->start, resource_size(base)); +out: + return err; +} + +static int __devexit au1000_remove(struct platform_device *pdev) +{ + struct net_device *dev = platform_get_drvdata(pdev); + struct au1000_private *aup = netdev_priv(dev); + int i; + struct resource *base, *macen; + + platform_set_drvdata(pdev, NULL); + + unregister_netdev(dev); + mdiobus_unregister(aup->mii_bus); + mdiobus_free(aup->mii_bus); + + for (i = 0; i < NUM_RX_DMA; i++) + if (aup->rx_db_inuse[i]) + au1000_ReleaseDB(aup, aup->rx_db_inuse[i]); + + for (i = 0; i < NUM_TX_DMA; i++) + if (aup->tx_db_inuse[i]) + au1000_ReleaseDB(aup, aup->tx_db_inuse[i]); + + dma_free_noncoherent(NULL, MAX_BUF_SIZE * + (NUM_TX_BUFFS + NUM_RX_BUFFS), + (void *)aup->vaddr, aup->dma_addr); + + iounmap(aup->mac); + iounmap(aup->enable); + + base = platform_get_resource(pdev, IORESOURCE_MEM, 0); + release_mem_region(base->start, resource_size(base)); + + macen = platform_get_resource(pdev, IORESOURCE_MEM, 1); + release_mem_region(macen->start, resource_size(macen)); + + free_netdev(dev); + + return 0; +} + +static struct platform_driver au1000_eth_driver = { + .probe = au1000_probe, + .remove = __devexit_p(au1000_remove), + .driver = { + .name = "au1000-eth", + .owner = THIS_MODULE, + }, +}; +MODULE_ALIAS("platform:au1000-eth"); + + +static int __init au1000_init_module(void) +{ + return platform_driver_register(&au1000_eth_driver); +} + +static void __exit au1000_exit_module(void) +{ + platform_driver_unregister(&au1000_eth_driver); +} + +module_init(au1000_init_module); +module_exit(au1000_exit_module); diff --git a/drivers/net/ethernet/amd/au1000_eth.h b/drivers/net/ethernet/amd/au1000_eth.h new file mode 100644 index 000000000000..6229c774552c --- /dev/null +++ b/drivers/net/ethernet/amd/au1000_eth.h @@ -0,0 +1,134 @@ +/* + * + * Alchemy Au1x00 ethernet driver include file + * + * Author: Pete Popov <ppopov@mvista.com> + * + * Copyright 2001 MontaVista Software Inc. + * + * ######################################################################## + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * ######################################################################## + * + * + */ + + +#define MAC_IOSIZE 0x10000 +#define NUM_RX_DMA 4 /* Au1x00 has 4 rx hardware descriptors */ +#define NUM_TX_DMA 4 /* Au1x00 has 4 tx hardware descriptors */ + +#define NUM_RX_BUFFS 4 +#define NUM_TX_BUFFS 4 +#define MAX_BUF_SIZE 2048 + +#define ETH_TX_TIMEOUT (HZ/4) +#define MAC_MIN_PKT_SIZE 64 + +#define MULTICAST_FILTER_LIMIT 64 + +/* + * Data Buffer Descriptor. Data buffers must be aligned on 32 byte + * boundary for both, receive and transmit. + */ +struct db_dest { + struct db_dest *pnext; + u32 *vaddr; + dma_addr_t dma_addr; +}; + +/* + * The transmit and receive descriptors are memory + * mapped registers. + */ +struct tx_dma { + u32 status; + u32 buff_stat; + u32 len; + u32 pad; +}; + +struct rx_dma { + u32 status; + u32 buff_stat; + u32 pad[2]; +}; + + +/* + * MAC control registers, memory mapped. + */ +struct mac_reg { + u32 control; + u32 mac_addr_high; + u32 mac_addr_low; + u32 multi_hash_high; + u32 multi_hash_low; + u32 mii_control; + u32 mii_data; + u32 flow_control; + u32 vlan1_tag; + u32 vlan2_tag; +}; + + +struct au1000_private { + struct db_dest *pDBfree; + struct db_dest db[NUM_RX_BUFFS+NUM_TX_BUFFS]; + struct rx_dma *rx_dma_ring[NUM_RX_DMA]; + struct tx_dma *tx_dma_ring[NUM_TX_DMA]; + struct db_dest *rx_db_inuse[NUM_RX_DMA]; + struct db_dest *tx_db_inuse[NUM_TX_DMA]; + u32 rx_head; + u32 tx_head; + u32 tx_tail; + u32 tx_full; + + int mac_id; + + int mac_enabled; /* whether MAC is currently enabled and running + * (req. for mdio) + */ + + int old_link; /* used by au1000_adjust_link */ + int old_speed; + int old_duplex; + + struct phy_device *phy_dev; + struct mii_bus *mii_bus; + + /* PHY configuration */ + int phy_static_config; + int phy_search_highest_addr; + int phy1_search_mac0; + + int phy_addr; + int phy_busid; + int phy_irq; + + /* These variables are just for quick access + * to certain regs addresses. + */ + struct mac_reg *mac; /* mac registers */ + u32 *enable; /* address of MAC Enable Register */ + + u32 vaddr; /* virtual address of rx/tx buffers */ + dma_addr_t dma_addr; /* dma address of rx/tx buffers */ + + spinlock_t lock; /* Serialise access to device */ + + u32 msg_enable; +}; diff --git a/drivers/net/ethernet/amd/declance.c b/drivers/net/ethernet/amd/declance.c new file mode 100644 index 000000000000..73f8d4fa682d --- /dev/null +++ b/drivers/net/ethernet/amd/declance.c @@ -0,0 +1,1381 @@ +/* + * Lance ethernet driver for the MIPS processor based + * DECstation family + * + * + * adopted from sunlance.c by Richard van den Berg + * + * Copyright (C) 2002, 2003, 2005, 2006 Maciej W. Rozycki + * + * additional sources: + * - PMAD-AA TURBOchannel Ethernet Module Functional Specification, + * Revision 1.2 + * + * History: + * + * v0.001: The kernel accepts the code and it shows the hardware address. + * + * v0.002: Removed most sparc stuff, left only some module and dma stuff. + * + * v0.003: Enhanced base address calculation from proposals by + * Harald Koerfgen and Thomas Riemer. + * + * v0.004: lance-regs is pointing at the right addresses, added prom + * check. First start of address mapping and DMA. + * + * v0.005: started to play around with LANCE-DMA. This driver will not + * work for non IOASIC lances. HK + * + * v0.006: added pointer arrays to lance_private and setup routine for + * them in dec_lance_init. HK + * + * v0.007: Big shit. The LANCE seems to use a different DMA mechanism to + * access the init block. This looks like one (short) word at a + * time, but the smallest amount the IOASIC can transfer is a + * (long) word. So we have a 2-2 padding here. Changed + * lance_init_block accordingly. The 16-16 padding for the buffers + * seems to be correct. HK + * + * v0.008: mods to make PMAX_LANCE work. 01/09/1999 triemer + * + * v0.009: Module support fixes, multiple interfaces support, various + * bits. macro + * + * v0.010: Fixes for the PMAD mapping of the LANCE buffer and for the + * PMAX requirement to only use halfword accesses to the + * buffer. macro + * + * v0.011: Converted the PMAD to the driver model. macro + */ + +#include <linux/crc32.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/if_ether.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/spinlock.h> +#include <linux/stddef.h> +#include <linux/string.h> +#include <linux/tc.h> +#include <linux/types.h> + +#include <asm/addrspace.h> +#include <asm/system.h> + +#include <asm/dec/interrupts.h> +#include <asm/dec/ioasic.h> +#include <asm/dec/ioasic_addrs.h> +#include <asm/dec/kn01.h> +#include <asm/dec/machtype.h> +#include <asm/dec/system.h> + +static char version[] __devinitdata = +"declance.c: v0.011 by Linux MIPS DECstation task force\n"; + +MODULE_AUTHOR("Linux MIPS DECstation task force"); +MODULE_DESCRIPTION("DEC LANCE (DECstation onboard, PMAD-xx) driver"); +MODULE_LICENSE("GPL"); + +#define __unused __attribute__ ((unused)) + +/* + * card types + */ +#define ASIC_LANCE 1 +#define PMAD_LANCE 2 +#define PMAX_LANCE 3 + + +#define LE_CSR0 0 +#define LE_CSR1 1 +#define LE_CSR2 2 +#define LE_CSR3 3 + +#define LE_MO_PROM 0x8000 /* Enable promiscuous mode */ + +#define LE_C0_ERR 0x8000 /* Error: set if BAB, SQE, MISS or ME is set */ +#define LE_C0_BABL 0x4000 /* BAB: Babble: tx timeout. */ +#define LE_C0_CERR 0x2000 /* SQE: Signal quality error */ +#define LE_C0_MISS 0x1000 /* MISS: Missed a packet */ +#define LE_C0_MERR 0x0800 /* ME: Memory error */ +#define LE_C0_RINT 0x0400 /* Received interrupt */ +#define LE_C0_TINT 0x0200 /* Transmitter Interrupt */ +#define LE_C0_IDON 0x0100 /* IFIN: Init finished. */ +#define LE_C0_INTR 0x0080 /* Interrupt or error */ +#define LE_C0_INEA 0x0040 /* Interrupt enable */ +#define LE_C0_RXON 0x0020 /* Receiver on */ +#define LE_C0_TXON 0x0010 /* Transmitter on */ +#define LE_C0_TDMD 0x0008 /* Transmitter demand */ +#define LE_C0_STOP 0x0004 /* Stop the card */ +#define LE_C0_STRT 0x0002 /* Start the card */ +#define LE_C0_INIT 0x0001 /* Init the card */ + +#define LE_C3_BSWP 0x4 /* SWAP */ +#define LE_C3_ACON 0x2 /* ALE Control */ +#define LE_C3_BCON 0x1 /* Byte control */ + +/* Receive message descriptor 1 */ +#define LE_R1_OWN 0x8000 /* Who owns the entry */ +#define LE_R1_ERR 0x4000 /* Error: if FRA, OFL, CRC or BUF is set */ +#define LE_R1_FRA 0x2000 /* FRA: Frame error */ +#define LE_R1_OFL 0x1000 /* OFL: Frame overflow */ +#define LE_R1_CRC 0x0800 /* CRC error */ +#define LE_R1_BUF 0x0400 /* BUF: Buffer error */ +#define LE_R1_SOP 0x0200 /* Start of packet */ +#define LE_R1_EOP 0x0100 /* End of packet */ +#define LE_R1_POK 0x0300 /* Packet is complete: SOP + EOP */ + +/* Transmit message descriptor 1 */ +#define LE_T1_OWN 0x8000 /* Lance owns the packet */ +#define LE_T1_ERR 0x4000 /* Error summary */ +#define LE_T1_EMORE 0x1000 /* Error: more than one retry needed */ +#define LE_T1_EONE 0x0800 /* Error: one retry needed */ +#define LE_T1_EDEF 0x0400 /* Error: deferred */ +#define LE_T1_SOP 0x0200 /* Start of packet */ +#define LE_T1_EOP 0x0100 /* End of packet */ +#define LE_T1_POK 0x0300 /* Packet is complete: SOP + EOP */ + +#define LE_T3_BUF 0x8000 /* Buffer error */ +#define LE_T3_UFL 0x4000 /* Error underflow */ +#define LE_T3_LCOL 0x1000 /* Error late collision */ +#define LE_T3_CLOS 0x0800 /* Error carrier loss */ +#define LE_T3_RTY 0x0400 /* Error retry */ +#define LE_T3_TDR 0x03ff /* Time Domain Reflectometry counter */ + +/* Define: 2^4 Tx buffers and 2^4 Rx buffers */ + +#ifndef LANCE_LOG_TX_BUFFERS +#define LANCE_LOG_TX_BUFFERS 4 +#define LANCE_LOG_RX_BUFFERS 4 +#endif + +#define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS)) +#define TX_RING_MOD_MASK (TX_RING_SIZE - 1) + +#define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS)) +#define RX_RING_MOD_MASK (RX_RING_SIZE - 1) + +#define PKT_BUF_SZ 1536 +#define RX_BUFF_SIZE PKT_BUF_SZ +#define TX_BUFF_SIZE PKT_BUF_SZ + +#undef TEST_HITS +#define ZERO 0 + +/* + * The DS2100/3100 have a linear 64 kB buffer which supports halfword + * accesses only. Each halfword of the buffer is word-aligned in the + * CPU address space. + * + * The PMAD-AA has a 128 kB buffer on-board. + * + * The IOASIC LANCE devices use a shared memory region. This region + * as seen from the CPU is (max) 128 kB long and has to be on an 128 kB + * boundary. The LANCE sees this as a 64 kB long continuous memory + * region. + * + * The LANCE's DMA address is used as an index in this buffer and DMA + * takes place in bursts of eight 16-bit words which are packed into + * four 32-bit words by the IOASIC. This leads to a strange padding: + * 16 bytes of valid data followed by a 16 byte gap :-(. + */ + +struct lance_rx_desc { + unsigned short rmd0; /* low address of packet */ + unsigned short rmd1; /* high address of packet + and descriptor bits */ + short length; /* 2s complement (negative!) + of buffer length */ + unsigned short mblength; /* actual number of bytes received */ +}; + +struct lance_tx_desc { + unsigned short tmd0; /* low address of packet */ + unsigned short tmd1; /* high address of packet + and descriptor bits */ + short length; /* 2s complement (negative!) + of buffer length */ + unsigned short misc; +}; + + +/* First part of the LANCE initialization block, described in databook. */ +struct lance_init_block { + unsigned short mode; /* pre-set mode (reg. 15) */ + + unsigned short phys_addr[3]; /* physical ethernet address */ + unsigned short filter[4]; /* multicast filter */ + + /* Receive and transmit ring base, along with extra bits. */ + unsigned short rx_ptr; /* receive descriptor addr */ + unsigned short rx_len; /* receive len and high addr */ + unsigned short tx_ptr; /* transmit descriptor addr */ + unsigned short tx_len; /* transmit len and high addr */ + + short gap[4]; + + /* The buffer descriptors */ + struct lance_rx_desc brx_ring[RX_RING_SIZE]; + struct lance_tx_desc btx_ring[TX_RING_SIZE]; +}; + +#define BUF_OFFSET_CPU sizeof(struct lance_init_block) +#define BUF_OFFSET_LNC sizeof(struct lance_init_block) + +#define shift_off(off, type) \ + (type == ASIC_LANCE || type == PMAX_LANCE ? off << 1 : off) + +#define lib_off(rt, type) \ + shift_off(offsetof(struct lance_init_block, rt), type) + +#define lib_ptr(ib, rt, type) \ + ((volatile u16 *)((u8 *)(ib) + lib_off(rt, type))) + +#define rds_off(rt, type) \ + shift_off(offsetof(struct lance_rx_desc, rt), type) + +#define rds_ptr(rd, rt, type) \ + ((volatile u16 *)((u8 *)(rd) + rds_off(rt, type))) + +#define tds_off(rt, type) \ + shift_off(offsetof(struct lance_tx_desc, rt), type) + +#define tds_ptr(td, rt, type) \ + ((volatile u16 *)((u8 *)(td) + tds_off(rt, type))) + +struct lance_private { + struct net_device *next; + int type; + int dma_irq; + volatile struct lance_regs *ll; + + spinlock_t lock; + + int rx_new, tx_new; + int rx_old, tx_old; + + unsigned short busmaster_regval; + + struct timer_list multicast_timer; + + /* Pointers to the ring buffers as seen from the CPU */ + char *rx_buf_ptr_cpu[RX_RING_SIZE]; + char *tx_buf_ptr_cpu[TX_RING_SIZE]; + + /* Pointers to the ring buffers as seen from the LANCE */ + uint rx_buf_ptr_lnc[RX_RING_SIZE]; + uint tx_buf_ptr_lnc[TX_RING_SIZE]; +}; + +#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ + lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:\ + lp->tx_old - lp->tx_new-1) + +/* The lance control ports are at an absolute address, machine and tc-slot + * dependent. + * DECstations do only 32-bit access and the LANCE uses 16 bit addresses, + * so we have to give the structure an extra member making rap pointing + * at the right address + */ +struct lance_regs { + volatile unsigned short rdp; /* register data port */ + unsigned short pad; + volatile unsigned short rap; /* register address port */ +}; + +int dec_lance_debug = 2; + +static struct tc_driver dec_lance_tc_driver; +static struct net_device *root_lance_dev; + +static inline void writereg(volatile unsigned short *regptr, short value) +{ + *regptr = value; + iob(); +} + +/* Load the CSR registers */ +static void load_csrs(struct lance_private *lp) +{ + volatile struct lance_regs *ll = lp->ll; + uint leptr; + + /* The address space as seen from the LANCE + * begins at address 0. HK + */ + leptr = 0; + + writereg(&ll->rap, LE_CSR1); + writereg(&ll->rdp, (leptr & 0xFFFF)); + writereg(&ll->rap, LE_CSR2); + writereg(&ll->rdp, leptr >> 16); + writereg(&ll->rap, LE_CSR3); + writereg(&ll->rdp, lp->busmaster_regval); + + /* Point back to csr0 */ + writereg(&ll->rap, LE_CSR0); +} + +/* + * Our specialized copy routines + * + */ +static void cp_to_buf(const int type, void *to, const void *from, int len) +{ + unsigned short *tp; + const unsigned short *fp; + unsigned short clen; + unsigned char *rtp; + const unsigned char *rfp; + + if (type == PMAD_LANCE) { + memcpy(to, from, len); + } else if (type == PMAX_LANCE) { + clen = len >> 1; + tp = to; + fp = from; + + while (clen--) { + *tp++ = *fp++; + tp++; + } + + clen = len & 1; + rtp = tp; + rfp = fp; + while (clen--) { + *rtp++ = *rfp++; + } + } else { + /* + * copy 16 Byte chunks + */ + clen = len >> 4; + tp = to; + fp = from; + while (clen--) { + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + tp += 8; + } + + /* + * do the rest, if any. + */ + clen = len & 15; + rtp = (unsigned char *) tp; + rfp = (unsigned char *) fp; + while (clen--) { + *rtp++ = *rfp++; + } + } + + iob(); +} + +static void cp_from_buf(const int type, void *to, const void *from, int len) +{ + unsigned short *tp; + const unsigned short *fp; + unsigned short clen; + unsigned char *rtp; + const unsigned char *rfp; + + if (type == PMAD_LANCE) { + memcpy(to, from, len); + } else if (type == PMAX_LANCE) { + clen = len >> 1; + tp = to; + fp = from; + while (clen--) { + *tp++ = *fp++; + fp++; + } + + clen = len & 1; + + rtp = tp; + rfp = fp; + + while (clen--) { + *rtp++ = *rfp++; + } + } else { + + /* + * copy 16 Byte chunks + */ + clen = len >> 4; + tp = to; + fp = from; + while (clen--) { + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + *tp++ = *fp++; + fp += 8; + } + + /* + * do the rest, if any. + */ + clen = len & 15; + rtp = (unsigned char *) tp; + rfp = (unsigned char *) fp; + while (clen--) { + *rtp++ = *rfp++; + } + + + } + +} + +/* Setup the Lance Rx and Tx rings */ +static void lance_init_ring(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile u16 *ib = (volatile u16 *)dev->mem_start; + uint leptr; + int i; + + /* Lock out other processes while setting up hardware */ + netif_stop_queue(dev); + lp->rx_new = lp->tx_new = 0; + lp->rx_old = lp->tx_old = 0; + + /* Copy the ethernet address to the lance init block. + * XXX bit 0 of the physical address registers has to be zero + */ + *lib_ptr(ib, phys_addr[0], lp->type) = (dev->dev_addr[1] << 8) | + dev->dev_addr[0]; + *lib_ptr(ib, phys_addr[1], lp->type) = (dev->dev_addr[3] << 8) | + dev->dev_addr[2]; + *lib_ptr(ib, phys_addr[2], lp->type) = (dev->dev_addr[5] << 8) | + dev->dev_addr[4]; + /* Setup the initialization block */ + + /* Setup rx descriptor pointer */ + leptr = offsetof(struct lance_init_block, brx_ring); + *lib_ptr(ib, rx_len, lp->type) = (LANCE_LOG_RX_BUFFERS << 13) | + (leptr >> 16); + *lib_ptr(ib, rx_ptr, lp->type) = leptr; + if (ZERO) + printk("RX ptr: %8.8x(%8.8x)\n", + leptr, lib_off(brx_ring, lp->type)); + + /* Setup tx descriptor pointer */ + leptr = offsetof(struct lance_init_block, btx_ring); + *lib_ptr(ib, tx_len, lp->type) = (LANCE_LOG_TX_BUFFERS << 13) | + (leptr >> 16); + *lib_ptr(ib, tx_ptr, lp->type) = leptr; + if (ZERO) + printk("TX ptr: %8.8x(%8.8x)\n", + leptr, lib_off(btx_ring, lp->type)); + + if (ZERO) + printk("TX rings:\n"); + + /* Setup the Tx ring entries */ + for (i = 0; i < TX_RING_SIZE; i++) { + leptr = lp->tx_buf_ptr_lnc[i]; + *lib_ptr(ib, btx_ring[i].tmd0, lp->type) = leptr; + *lib_ptr(ib, btx_ring[i].tmd1, lp->type) = (leptr >> 16) & + 0xff; + *lib_ptr(ib, btx_ring[i].length, lp->type) = 0xf000; + /* The ones required by tmd2 */ + *lib_ptr(ib, btx_ring[i].misc, lp->type) = 0; + if (i < 3 && ZERO) + printk("%d: 0x%8.8x(0x%8.8x)\n", + i, leptr, (uint)lp->tx_buf_ptr_cpu[i]); + } + + /* Setup the Rx ring entries */ + if (ZERO) + printk("RX rings:\n"); + for (i = 0; i < RX_RING_SIZE; i++) { + leptr = lp->rx_buf_ptr_lnc[i]; + *lib_ptr(ib, brx_ring[i].rmd0, lp->type) = leptr; + *lib_ptr(ib, brx_ring[i].rmd1, lp->type) = ((leptr >> 16) & + 0xff) | + LE_R1_OWN; + *lib_ptr(ib, brx_ring[i].length, lp->type) = -RX_BUFF_SIZE | + 0xf000; + *lib_ptr(ib, brx_ring[i].mblength, lp->type) = 0; + if (i < 3 && ZERO) + printk("%d: 0x%8.8x(0x%8.8x)\n", + i, leptr, (uint)lp->rx_buf_ptr_cpu[i]); + } + iob(); +} + +static int init_restart_lance(struct lance_private *lp) +{ + volatile struct lance_regs *ll = lp->ll; + int i; + + writereg(&ll->rap, LE_CSR0); + writereg(&ll->rdp, LE_C0_INIT); + + /* Wait for the lance to complete initialization */ + for (i = 0; (i < 100) && !(ll->rdp & LE_C0_IDON); i++) { + udelay(10); + } + if ((i == 100) || (ll->rdp & LE_C0_ERR)) { + printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", + i, ll->rdp); + return -1; + } + if ((ll->rdp & LE_C0_ERR)) { + printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", + i, ll->rdp); + return -1; + } + writereg(&ll->rdp, LE_C0_IDON); + writereg(&ll->rdp, LE_C0_STRT); + writereg(&ll->rdp, LE_C0_INEA); + + return 0; +} + +static int lance_rx(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile u16 *ib = (volatile u16 *)dev->mem_start; + volatile u16 *rd; + unsigned short bits; + int entry, len; + struct sk_buff *skb; + +#ifdef TEST_HITS + { + int i; + + printk("["); + for (i = 0; i < RX_RING_SIZE; i++) { + if (i == lp->rx_new) + printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, + lp->type) & + LE_R1_OWN ? "_" : "X"); + else + printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, + lp->type) & + LE_R1_OWN ? "." : "1"); + } + printk("]"); + } +#endif + + for (rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type); + !((bits = *rds_ptr(rd, rmd1, lp->type)) & LE_R1_OWN); + rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type)) { + entry = lp->rx_new; + + /* We got an incomplete frame? */ + if ((bits & LE_R1_POK) != LE_R1_POK) { + dev->stats.rx_over_errors++; + dev->stats.rx_errors++; + } else if (bits & LE_R1_ERR) { + /* Count only the end frame as a rx error, + * not the beginning + */ + if (bits & LE_R1_BUF) + dev->stats.rx_fifo_errors++; + if (bits & LE_R1_CRC) + dev->stats.rx_crc_errors++; + if (bits & LE_R1_OFL) + dev->stats.rx_over_errors++; + if (bits & LE_R1_FRA) + dev->stats.rx_frame_errors++; + if (bits & LE_R1_EOP) + dev->stats.rx_errors++; + } else { + len = (*rds_ptr(rd, mblength, lp->type) & 0xfff) - 4; + skb = dev_alloc_skb(len + 2); + + if (skb == 0) { + printk("%s: Memory squeeze, deferring packet.\n", + dev->name); + dev->stats.rx_dropped++; + *rds_ptr(rd, mblength, lp->type) = 0; + *rds_ptr(rd, rmd1, lp->type) = + ((lp->rx_buf_ptr_lnc[entry] >> 16) & + 0xff) | LE_R1_OWN; + lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; + return 0; + } + dev->stats.rx_bytes += len; + + skb_reserve(skb, 2); /* 16 byte align */ + skb_put(skb, len); /* make room */ + + cp_from_buf(lp->type, skb->data, + (char *)lp->rx_buf_ptr_cpu[entry], len); + + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + dev->stats.rx_packets++; + } + + /* Return the packet to the pool */ + *rds_ptr(rd, mblength, lp->type) = 0; + *rds_ptr(rd, length, lp->type) = -RX_BUFF_SIZE | 0xf000; + *rds_ptr(rd, rmd1, lp->type) = + ((lp->rx_buf_ptr_lnc[entry] >> 16) & 0xff) | LE_R1_OWN; + lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; + } + return 0; +} + +static void lance_tx(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile u16 *ib = (volatile u16 *)dev->mem_start; + volatile struct lance_regs *ll = lp->ll; + volatile u16 *td; + int i, j; + int status; + + j = lp->tx_old; + + spin_lock(&lp->lock); + + for (i = j; i != lp->tx_new; i = j) { + td = lib_ptr(ib, btx_ring[i], lp->type); + /* If we hit a packet not owned by us, stop */ + if (*tds_ptr(td, tmd1, lp->type) & LE_T1_OWN) + break; + + if (*tds_ptr(td, tmd1, lp->type) & LE_T1_ERR) { + status = *tds_ptr(td, misc, lp->type); + + dev->stats.tx_errors++; + if (status & LE_T3_RTY) + dev->stats.tx_aborted_errors++; + if (status & LE_T3_LCOL) + dev->stats.tx_window_errors++; + + if (status & LE_T3_CLOS) { + dev->stats.tx_carrier_errors++; + printk("%s: Carrier Lost\n", dev->name); + /* Stop the lance */ + writereg(&ll->rap, LE_CSR0); + writereg(&ll->rdp, LE_C0_STOP); + lance_init_ring(dev); + load_csrs(lp); + init_restart_lance(lp); + goto out; + } + /* Buffer errors and underflows turn off the + * transmitter, restart the adapter. + */ + if (status & (LE_T3_BUF | LE_T3_UFL)) { + dev->stats.tx_fifo_errors++; + + printk("%s: Tx: ERR_BUF|ERR_UFL, restarting\n", + dev->name); + /* Stop the lance */ + writereg(&ll->rap, LE_CSR0); + writereg(&ll->rdp, LE_C0_STOP); + lance_init_ring(dev); + load_csrs(lp); + init_restart_lance(lp); + goto out; + } + } else if ((*tds_ptr(td, tmd1, lp->type) & LE_T1_POK) == + LE_T1_POK) { + /* + * So we don't count the packet more than once. + */ + *tds_ptr(td, tmd1, lp->type) &= ~(LE_T1_POK); + + /* One collision before packet was sent. */ + if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EONE) + dev->stats.collisions++; + + /* More than one collision, be optimistic. */ + if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EMORE) + dev->stats.collisions += 2; + + dev->stats.tx_packets++; + } + j = (j + 1) & TX_RING_MOD_MASK; + } + lp->tx_old = j; +out: + if (netif_queue_stopped(dev) && + TX_BUFFS_AVAIL > 0) + netif_wake_queue(dev); + + spin_unlock(&lp->lock); +} + +static irqreturn_t lance_dma_merr_int(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + + printk(KERN_ERR "%s: DMA error\n", dev->name); + return IRQ_HANDLED; +} + +static irqreturn_t lance_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + int csr0; + + writereg(&ll->rap, LE_CSR0); + csr0 = ll->rdp; + + /* Acknowledge all the interrupt sources ASAP */ + writereg(&ll->rdp, csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT)); + + if ((csr0 & LE_C0_ERR)) { + /* Clear the error condition */ + writereg(&ll->rdp, LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | + LE_C0_CERR | LE_C0_MERR); + } + if (csr0 & LE_C0_RINT) + lance_rx(dev); + + if (csr0 & LE_C0_TINT) + lance_tx(dev); + + if (csr0 & LE_C0_BABL) + dev->stats.tx_errors++; + + if (csr0 & LE_C0_MISS) + dev->stats.rx_errors++; + + if (csr0 & LE_C0_MERR) { + printk("%s: Memory error, status %04x\n", dev->name, csr0); + + writereg(&ll->rdp, LE_C0_STOP); + + lance_init_ring(dev); + load_csrs(lp); + init_restart_lance(lp); + netif_wake_queue(dev); + } + + writereg(&ll->rdp, LE_C0_INEA); + writereg(&ll->rdp, LE_C0_INEA); + return IRQ_HANDLED; +} + +static int lance_open(struct net_device *dev) +{ + volatile u16 *ib = (volatile u16 *)dev->mem_start; + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + int status = 0; + + /* Stop the Lance */ + writereg(&ll->rap, LE_CSR0); + writereg(&ll->rdp, LE_C0_STOP); + + /* Set mode and clear multicast filter only at device open, + * so that lance_init_ring() called at any error will not + * forget multicast filters. + * + * BTW it is common bug in all lance drivers! --ANK + */ + *lib_ptr(ib, mode, lp->type) = 0; + *lib_ptr(ib, filter[0], lp->type) = 0; + *lib_ptr(ib, filter[1], lp->type) = 0; + *lib_ptr(ib, filter[2], lp->type) = 0; + *lib_ptr(ib, filter[3], lp->type) = 0; + + lance_init_ring(dev); + load_csrs(lp); + + netif_start_queue(dev); + + /* Associate IRQ with lance_interrupt */ + if (request_irq(dev->irq, lance_interrupt, 0, "lance", dev)) { + printk("%s: Can't get IRQ %d\n", dev->name, dev->irq); + return -EAGAIN; + } + if (lp->dma_irq >= 0) { + unsigned long flags; + + if (request_irq(lp->dma_irq, lance_dma_merr_int, 0, + "lance error", dev)) { + free_irq(dev->irq, dev); + printk("%s: Can't get DMA IRQ %d\n", dev->name, + lp->dma_irq); + return -EAGAIN; + } + + spin_lock_irqsave(&ioasic_ssr_lock, flags); + + fast_mb(); + /* Enable I/O ASIC LANCE DMA. */ + ioasic_write(IO_REG_SSR, + ioasic_read(IO_REG_SSR) | IO_SSR_LANCE_DMA_EN); + + fast_mb(); + spin_unlock_irqrestore(&ioasic_ssr_lock, flags); + } + + status = init_restart_lance(lp); + return status; +} + +static int lance_close(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + + netif_stop_queue(dev); + del_timer_sync(&lp->multicast_timer); + + /* Stop the card */ + writereg(&ll->rap, LE_CSR0); + writereg(&ll->rdp, LE_C0_STOP); + + if (lp->dma_irq >= 0) { + unsigned long flags; + + spin_lock_irqsave(&ioasic_ssr_lock, flags); + + fast_mb(); + /* Disable I/O ASIC LANCE DMA. */ + ioasic_write(IO_REG_SSR, + ioasic_read(IO_REG_SSR) & ~IO_SSR_LANCE_DMA_EN); + + fast_iob(); + spin_unlock_irqrestore(&ioasic_ssr_lock, flags); + + free_irq(lp->dma_irq, dev); + } + free_irq(dev->irq, dev); + return 0; +} + +static inline int lance_reset(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + int status; + + /* Stop the lance */ + writereg(&ll->rap, LE_CSR0); + writereg(&ll->rdp, LE_C0_STOP); + + lance_init_ring(dev); + load_csrs(lp); + dev->trans_start = jiffies; /* prevent tx timeout */ + status = init_restart_lance(lp); + return status; +} + +static void lance_tx_timeout(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + + printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n", + dev->name, ll->rdp); + lance_reset(dev); + netif_wake_queue(dev); +} + +static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile struct lance_regs *ll = lp->ll; + volatile u16 *ib = (volatile u16 *)dev->mem_start; + unsigned long flags; + int entry, len; + + len = skb->len; + + if (len < ETH_ZLEN) { + if (skb_padto(skb, ETH_ZLEN)) + return NETDEV_TX_OK; + len = ETH_ZLEN; + } + + dev->stats.tx_bytes += len; + + spin_lock_irqsave(&lp->lock, flags); + + entry = lp->tx_new; + *lib_ptr(ib, btx_ring[entry].length, lp->type) = (-len); + *lib_ptr(ib, btx_ring[entry].misc, lp->type) = 0; + + cp_to_buf(lp->type, (char *)lp->tx_buf_ptr_cpu[entry], skb->data, len); + + /* Now, give the packet to the lance */ + *lib_ptr(ib, btx_ring[entry].tmd1, lp->type) = + ((lp->tx_buf_ptr_lnc[entry] >> 16) & 0xff) | + (LE_T1_POK | LE_T1_OWN); + lp->tx_new = (entry + 1) & TX_RING_MOD_MASK; + + if (TX_BUFFS_AVAIL <= 0) + netif_stop_queue(dev); + + /* Kick the lance: transmit now */ + writereg(&ll->rdp, LE_C0_INEA | LE_C0_TDMD); + + spin_unlock_irqrestore(&lp->lock, flags); + + dev_kfree_skb(skb); + + return NETDEV_TX_OK; +} + +static void lance_load_multicast(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile u16 *ib = (volatile u16 *)dev->mem_start; + struct netdev_hw_addr *ha; + u32 crc; + + /* set all multicast bits */ + if (dev->flags & IFF_ALLMULTI) { + *lib_ptr(ib, filter[0], lp->type) = 0xffff; + *lib_ptr(ib, filter[1], lp->type) = 0xffff; + *lib_ptr(ib, filter[2], lp->type) = 0xffff; + *lib_ptr(ib, filter[3], lp->type) = 0xffff; + return; + } + /* clear the multicast filter */ + *lib_ptr(ib, filter[0], lp->type) = 0; + *lib_ptr(ib, filter[1], lp->type) = 0; + *lib_ptr(ib, filter[2], lp->type) = 0; + *lib_ptr(ib, filter[3], lp->type) = 0; + + /* Add addresses */ + netdev_for_each_mc_addr(ha, dev) { + crc = ether_crc_le(ETH_ALEN, ha->addr); + crc = crc >> 26; + *lib_ptr(ib, filter[crc >> 4], lp->type) |= 1 << (crc & 0xf); + } +} + +static void lance_set_multicast(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + volatile u16 *ib = (volatile u16 *)dev->mem_start; + volatile struct lance_regs *ll = lp->ll; + + if (!netif_running(dev)) + return; + + if (lp->tx_old != lp->tx_new) { + mod_timer(&lp->multicast_timer, jiffies + 4 * HZ/100); + netif_wake_queue(dev); + return; + } + + netif_stop_queue(dev); + + writereg(&ll->rap, LE_CSR0); + writereg(&ll->rdp, LE_C0_STOP); + + lance_init_ring(dev); + + if (dev->flags & IFF_PROMISC) { + *lib_ptr(ib, mode, lp->type) |= LE_MO_PROM; + } else { + *lib_ptr(ib, mode, lp->type) &= ~LE_MO_PROM; + lance_load_multicast(dev); + } + load_csrs(lp); + init_restart_lance(lp); + netif_wake_queue(dev); +} + +static void lance_set_multicast_retry(unsigned long _opaque) +{ + struct net_device *dev = (struct net_device *) _opaque; + + lance_set_multicast(dev); +} + +static const struct net_device_ops lance_netdev_ops = { + .ndo_open = lance_open, + .ndo_stop = lance_close, + .ndo_start_xmit = lance_start_xmit, + .ndo_tx_timeout = lance_tx_timeout, + .ndo_set_rx_mode = lance_set_multicast, + .ndo_change_mtu = eth_change_mtu, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = eth_mac_addr, +}; + +static int __devinit dec_lance_probe(struct device *bdev, const int type) +{ + static unsigned version_printed; + static const char fmt[] = "declance%d"; + char name[10]; + struct net_device *dev; + struct lance_private *lp; + volatile struct lance_regs *ll; + resource_size_t start = 0, len = 0; + int i, ret; + unsigned long esar_base; + unsigned char *esar; + + if (dec_lance_debug && version_printed++ == 0) + printk(version); + + if (bdev) + snprintf(name, sizeof(name), "%s", dev_name(bdev)); + else { + i = 0; + dev = root_lance_dev; + while (dev) { + i++; + lp = netdev_priv(dev); + dev = lp->next; + } + snprintf(name, sizeof(name), fmt, i); + } + + dev = alloc_etherdev(sizeof(struct lance_private)); + if (!dev) { + printk(KERN_ERR "%s: Unable to allocate etherdev, aborting.\n", + name); + ret = -ENOMEM; + goto err_out; + } + + /* + * alloc_etherdev ensures the data structures used by the LANCE + * are aligned. + */ + lp = netdev_priv(dev); + spin_lock_init(&lp->lock); + + lp->type = type; + switch (type) { + case ASIC_LANCE: + dev->base_addr = CKSEG1ADDR(dec_kn_slot_base + IOASIC_LANCE); + + /* buffer space for the on-board LANCE shared memory */ + /* + * FIXME: ugly hack! + */ + dev->mem_start = CKSEG1ADDR(0x00020000); + dev->mem_end = dev->mem_start + 0x00020000; + dev->irq = dec_interrupt[DEC_IRQ_LANCE]; + esar_base = CKSEG1ADDR(dec_kn_slot_base + IOASIC_ESAR); + + /* Workaround crash with booting KN04 2.1k from Disk */ + memset((void *)dev->mem_start, 0, + dev->mem_end - dev->mem_start); + + /* + * setup the pointer arrays, this sucks [tm] :-( + */ + for (i = 0; i < RX_RING_SIZE; i++) { + lp->rx_buf_ptr_cpu[i] = + (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + + 2 * i * RX_BUFF_SIZE); + lp->rx_buf_ptr_lnc[i] = + (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); + } + for (i = 0; i < TX_RING_SIZE; i++) { + lp->tx_buf_ptr_cpu[i] = + (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + + 2 * RX_RING_SIZE * RX_BUFF_SIZE + + 2 * i * TX_BUFF_SIZE); + lp->tx_buf_ptr_lnc[i] = + (BUF_OFFSET_LNC + + RX_RING_SIZE * RX_BUFF_SIZE + + i * TX_BUFF_SIZE); + } + + /* Setup I/O ASIC LANCE DMA. */ + lp->dma_irq = dec_interrupt[DEC_IRQ_LANCE_MERR]; + ioasic_write(IO_REG_LANCE_DMA_P, + CPHYSADDR(dev->mem_start) << 3); + + break; +#ifdef CONFIG_TC + case PMAD_LANCE: + dev_set_drvdata(bdev, dev); + + start = to_tc_dev(bdev)->resource.start; + len = to_tc_dev(bdev)->resource.end - start + 1; + if (!request_mem_region(start, len, dev_name(bdev))) { + printk(KERN_ERR + "%s: Unable to reserve MMIO resource\n", + dev_name(bdev)); + ret = -EBUSY; + goto err_out_dev; + } + + dev->mem_start = CKSEG1ADDR(start); + dev->mem_end = dev->mem_start + 0x100000; + dev->base_addr = dev->mem_start + 0x100000; + dev->irq = to_tc_dev(bdev)->interrupt; + esar_base = dev->mem_start + 0x1c0002; + lp->dma_irq = -1; + + for (i = 0; i < RX_RING_SIZE; i++) { + lp->rx_buf_ptr_cpu[i] = + (char *)(dev->mem_start + BUF_OFFSET_CPU + + i * RX_BUFF_SIZE); + lp->rx_buf_ptr_lnc[i] = + (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); + } + for (i = 0; i < TX_RING_SIZE; i++) { + lp->tx_buf_ptr_cpu[i] = + (char *)(dev->mem_start + BUF_OFFSET_CPU + + RX_RING_SIZE * RX_BUFF_SIZE + + i * TX_BUFF_SIZE); + lp->tx_buf_ptr_lnc[i] = + (BUF_OFFSET_LNC + + RX_RING_SIZE * RX_BUFF_SIZE + + i * TX_BUFF_SIZE); + } + + break; +#endif + case PMAX_LANCE: + dev->irq = dec_interrupt[DEC_IRQ_LANCE]; + dev->base_addr = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE); + dev->mem_start = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE_MEM); + dev->mem_end = dev->mem_start + KN01_SLOT_SIZE; + esar_base = CKSEG1ADDR(KN01_SLOT_BASE + KN01_ESAR + 1); + lp->dma_irq = -1; + + /* + * setup the pointer arrays, this sucks [tm] :-( + */ + for (i = 0; i < RX_RING_SIZE; i++) { + lp->rx_buf_ptr_cpu[i] = + (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + + 2 * i * RX_BUFF_SIZE); + lp->rx_buf_ptr_lnc[i] = + (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); + } + for (i = 0; i < TX_RING_SIZE; i++) { + lp->tx_buf_ptr_cpu[i] = + (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + + 2 * RX_RING_SIZE * RX_BUFF_SIZE + + 2 * i * TX_BUFF_SIZE); + lp->tx_buf_ptr_lnc[i] = + (BUF_OFFSET_LNC + + RX_RING_SIZE * RX_BUFF_SIZE + + i * TX_BUFF_SIZE); + } + + break; + + default: + printk(KERN_ERR "%s: declance_init called with unknown type\n", + name); + ret = -ENODEV; + goto err_out_dev; + } + + ll = (struct lance_regs *) dev->base_addr; + esar = (unsigned char *) esar_base; + + /* prom checks */ + /* First, check for test pattern */ + if (esar[0x60] != 0xff && esar[0x64] != 0x00 && + esar[0x68] != 0x55 && esar[0x6c] != 0xaa) { + printk(KERN_ERR + "%s: Ethernet station address prom not found!\n", + name); + ret = -ENODEV; + goto err_out_resource; + } + /* Check the prom contents */ + for (i = 0; i < 8; i++) { + if (esar[i * 4] != esar[0x3c - i * 4] && + esar[i * 4] != esar[0x40 + i * 4] && + esar[0x3c - i * 4] != esar[0x40 + i * 4]) { + printk(KERN_ERR "%s: Something is wrong with the " + "ethernet station address prom!\n", name); + ret = -ENODEV; + goto err_out_resource; + } + } + + /* Copy the ethernet address to the device structure, later to the + * lance initialization block so the lance gets it every time it's + * (re)initialized. + */ + switch (type) { + case ASIC_LANCE: + printk("%s: IOASIC onboard LANCE", name); + break; + case PMAD_LANCE: + printk("%s: PMAD-AA", name); + break; + case PMAX_LANCE: + printk("%s: PMAX onboard LANCE", name); + break; + } + for (i = 0; i < 6; i++) + dev->dev_addr[i] = esar[i * 4]; + + printk(", addr = %pM, irq = %d\n", dev->dev_addr, dev->irq); + + dev->netdev_ops = &lance_netdev_ops; + dev->watchdog_timeo = 5*HZ; + + /* lp->ll is the location of the registers for lance card */ + lp->ll = ll; + + /* busmaster_regval (CSR3) should be zero according to the PMAD-AA + * specification. + */ + lp->busmaster_regval = 0; + + dev->dma = 0; + + /* We cannot sleep if the chip is busy during a + * multicast list update event, because such events + * can occur from interrupts (ex. IPv6). So we + * use a timer to try again later when necessary. -DaveM + */ + init_timer(&lp->multicast_timer); + lp->multicast_timer.data = (unsigned long) dev; + lp->multicast_timer.function = lance_set_multicast_retry; + + ret = register_netdev(dev); + if (ret) { + printk(KERN_ERR + "%s: Unable to register netdev, aborting.\n", name); + goto err_out_resource; + } + + if (!bdev) { + lp->next = root_lance_dev; + root_lance_dev = dev; + } + + printk("%s: registered as %s.\n", name, dev->name); + return 0; + +err_out_resource: + if (bdev) + release_mem_region(start, len); + +err_out_dev: + free_netdev(dev); + +err_out: + return ret; +} + +static void __exit dec_lance_remove(struct device *bdev) +{ + struct net_device *dev = dev_get_drvdata(bdev); + resource_size_t start, len; + + unregister_netdev(dev); + start = to_tc_dev(bdev)->resource.start; + len = to_tc_dev(bdev)->resource.end - start + 1; + release_mem_region(start, len); + free_netdev(dev); +} + +/* Find all the lance cards on the system and initialize them */ +static int __init dec_lance_platform_probe(void) +{ + int count = 0; + + if (dec_interrupt[DEC_IRQ_LANCE] >= 0) { + if (dec_interrupt[DEC_IRQ_LANCE_MERR] >= 0) { + if (dec_lance_probe(NULL, ASIC_LANCE) >= 0) + count++; + } else if (!TURBOCHANNEL) { + if (dec_lance_probe(NULL, PMAX_LANCE) >= 0) + count++; + } + } + + return (count > 0) ? 0 : -ENODEV; +} + +static void __exit dec_lance_platform_remove(void) +{ + while (root_lance_dev) { + struct net_device *dev = root_lance_dev; + struct lance_private *lp = netdev_priv(dev); + + unregister_netdev(dev); + root_lance_dev = lp->next; + free_netdev(dev); + } +} + +#ifdef CONFIG_TC +static int __devinit dec_lance_tc_probe(struct device *dev); +static int __exit dec_lance_tc_remove(struct device *dev); + +static const struct tc_device_id dec_lance_tc_table[] = { + { "DEC ", "PMAD-AA " }, + { } +}; +MODULE_DEVICE_TABLE(tc, dec_lance_tc_table); + +static struct tc_driver dec_lance_tc_driver = { + .id_table = dec_lance_tc_table, + .driver = { + .name = "declance", + .bus = &tc_bus_type, + .probe = dec_lance_tc_probe, + .remove = __exit_p(dec_lance_tc_remove), + }, +}; + +static int __devinit dec_lance_tc_probe(struct device *dev) +{ + int status = dec_lance_probe(dev, PMAD_LANCE); + if (!status) + get_device(dev); + return status; +} + +static int __exit dec_lance_tc_remove(struct device *dev) +{ + put_device(dev); + dec_lance_remove(dev); + return 0; +} +#endif + +static int __init dec_lance_init(void) +{ + int status; + + status = tc_register_driver(&dec_lance_tc_driver); + if (!status) + dec_lance_platform_probe(); + return status; +} + +static void __exit dec_lance_exit(void) +{ + dec_lance_platform_remove(); + tc_unregister_driver(&dec_lance_tc_driver); +} + + +module_init(dec_lance_init); +module_exit(dec_lance_exit); diff --git a/drivers/net/ethernet/amd/depca.c b/drivers/net/ethernet/amd/depca.c new file mode 100644 index 000000000000..681970c07f22 --- /dev/null +++ b/drivers/net/ethernet/amd/depca.c @@ -0,0 +1,2111 @@ +/* depca.c: A DIGITAL DEPCA & EtherWORKS ethernet driver for linux. + + Written 1994, 1995 by David C. Davies. + + + Copyright 1994 David C. Davies + and + United States Government + (as represented by the Director, National Security Agency). + + Copyright 1995 Digital Equipment Corporation. + + + This software may be used and distributed according to the terms of + the GNU General Public License, incorporated herein by reference. + + This driver is written for the Digital Equipment Corporation series + of DEPCA and EtherWORKS ethernet cards: + + DEPCA (the original) + DE100 + DE101 + DE200 Turbo + DE201 Turbo + DE202 Turbo (TP BNC) + DE210 + DE422 (EISA) + + The driver has been tested on DE100, DE200 and DE202 cards in a + relatively busy network. The DE422 has been tested a little. + + This driver will NOT work for the DE203, DE204 and DE205 series of + cards, since they have a new custom ASIC in place of the AMD LANCE + chip. See the 'ewrk3.c' driver in the Linux source tree for running + those cards. + + I have benchmarked the driver with a DE100 at 595kB/s to (542kB/s from) + a DECstation 5000/200. + + The author may be reached at davies@maniac.ultranet.com + + ========================================================================= + + The driver was originally based on the 'lance.c' driver from Donald + Becker which is included with the standard driver distribution for + linux. V0.4 is a complete re-write with only the kernel interface + remaining from the original code. + + 1) Lance.c code in /linux/drivers/net/ + 2) "Ethernet/IEEE 802.3 Family. 1992 World Network Data Book/Handbook", + AMD, 1992 [(800) 222-9323]. + 3) "Am79C90 CMOS Local Area Network Controller for Ethernet (C-LANCE)", + AMD, Pub. #17881, May 1993. + 4) "Am79C960 PCnet-ISA(tm), Single-Chip Ethernet Controller for ISA", + AMD, Pub. #16907, May 1992 + 5) "DEC EtherWORKS LC Ethernet Controller Owners Manual", + Digital Equipment corporation, 1990, Pub. #EK-DE100-OM.003 + 6) "DEC EtherWORKS Turbo Ethernet Controller Owners Manual", + Digital Equipment corporation, 1990, Pub. #EK-DE200-OM.003 + 7) "DEPCA Hardware Reference Manual", Pub. #EK-DEPCA-PR + Digital Equipment Corporation, 1989 + 8) "DEC EtherWORKS Turbo_(TP BNC) Ethernet Controller Owners Manual", + Digital Equipment corporation, 1991, Pub. #EK-DE202-OM.001 + + + Peter Bauer's depca.c (V0.5) was referred to when debugging V0.1 of this + driver. + + The original DEPCA card requires that the ethernet ROM address counter + be enabled to count and has an 8 bit NICSR. The ROM counter enabling is + only done when a 0x08 is read as the first address octet (to minimise + the chances of writing over some other hardware's I/O register). The + NICSR accesses have been changed to byte accesses for all the cards + supported by this driver, since there is only one useful bit in the MSB + (remote boot timeout) and it is not used. Also, there is a maximum of + only 48kB network RAM for this card. My thanks to Torbjorn Lindh for + help debugging all this (and holding my feet to the fire until I got it + right). + + The DE200 series boards have on-board 64kB RAM for use as a shared + memory network buffer. Only the DE100 cards make use of a 2kB buffer + mode which has not been implemented in this driver (only the 32kB and + 64kB modes are supported [16kB/48kB for the original DEPCA]). + + At the most only 2 DEPCA cards can be supported on the ISA bus because + there is only provision for two I/O base addresses on each card (0x300 + and 0x200). The I/O address is detected by searching for a byte sequence + in the Ethernet station address PROM at the expected I/O address for the + Ethernet PROM. The shared memory base address is 'autoprobed' by + looking for the self test PROM and detecting the card name. When a + second DEPCA is detected, information is placed in the base_addr + variable of the next device structure (which is created if necessary), + thus enabling ethif_probe initialization for the device. More than 2 + EISA cards can be supported, but care will be needed assigning the + shared memory to ensure that each slot has the correct IRQ, I/O address + and shared memory address assigned. + + ************************************************************************ + + NOTE: If you are using two ISA DEPCAs, it is important that you assign + the base memory addresses correctly. The driver autoprobes I/O 0x300 + then 0x200. The base memory address for the first device must be less + than that of the second so that the auto probe will correctly assign the + I/O and memory addresses on the same card. I can't think of a way to do + this unambiguously at the moment, since there is nothing on the cards to + tie I/O and memory information together. + + I am unable to test 2 cards together for now, so this code is + unchecked. All reports, good or bad, are welcome. + + ************************************************************************ + + The board IRQ setting must be at an unused IRQ which is auto-probed + using Donald Becker's autoprobe routines. DEPCA and DE100 board IRQs are + {2,3,4,5,7}, whereas the DE200 is at {5,9,10,11,15}. Note that IRQ2 is + really IRQ9 in machines with 16 IRQ lines. + + No 16MB memory limitation should exist with this driver as DMA is not + used and the common memory area is in low memory on the network card (my + current system has 20MB and I've not had problems yet). + + The ability to load this driver as a loadable module has been added. To + utilise this ability, you have to do <8 things: + + 0) have a copy of the loadable modules code installed on your system. + 1) copy depca.c from the /linux/drivers/net directory to your favourite + temporary directory. + 2) if you wish, edit the source code near line 1530 to reflect the I/O + address and IRQ you're using (see also 5). + 3) compile depca.c, but include -DMODULE in the command line to ensure + that the correct bits are compiled (see end of source code). + 4) if you are wanting to add a new card, goto 5. Otherwise, recompile a + kernel with the depca configuration turned off and reboot. + 5) insmod depca.o [irq=7] [io=0x200] [mem=0xd0000] [adapter_name=DE100] + [Alan Cox: Changed the code to allow command line irq/io assignments] + [Dave Davies: Changed the code to allow command line mem/name + assignments] + 6) run the net startup bits for your eth?? interface manually + (usually /etc/rc.inet[12] at boot time). + 7) enjoy! + + Note that autoprobing is not allowed in loadable modules - the system is + already up and running and you're messing with interrupts. + + To unload a module, turn off the associated interface + 'ifconfig eth?? down' then 'rmmod depca'. + + To assign a base memory address for the shared memory when running as a + loadable module, see 5 above. To include the adapter name (if you have + no PROM but know the card name) also see 5 above. Note that this last + option will not work with kernel built-in depca's. + + The shared memory assignment for a loadable module makes sense to avoid + the 'memory autoprobe' picking the wrong shared memory (for the case of + 2 depca's in a PC). + + ************************************************************************ + Support for MCA EtherWORKS cards added 11-3-98. + Verified to work with up to 2 DE212 cards in a system (although not + fully stress-tested). + + Currently known bugs/limitations: + + Note: with the MCA stuff as a module, it trusts the MCA configuration, + not the command line for IRQ and memory address. You can + specify them if you want, but it will throw your values out. + You still have to pass the IO address it was configured as + though. + + ************************************************************************ + TO DO: + ------ + + + Revision History + ---------------- + + Version Date Description + + 0.1 25-jan-94 Initial writing. + 0.2 27-jan-94 Added LANCE TX hardware buffer chaining. + 0.3 1-feb-94 Added multiple DEPCA support. + 0.31 4-feb-94 Added DE202 recognition. + 0.32 19-feb-94 Tidy up. Improve multi-DEPCA support. + 0.33 25-feb-94 Fix DEPCA ethernet ROM counter enable. + Add jabber packet fix from murf@perftech.com + and becker@super.org + 0.34 7-mar-94 Fix DEPCA max network memory RAM & NICSR access. + 0.35 8-mar-94 Added DE201 recognition. Tidied up. + 0.351 30-apr-94 Added EISA support. Added DE422 recognition. + 0.36 16-may-94 DE422 fix released. + 0.37 22-jul-94 Added MODULE support + 0.38 15-aug-94 Added DBR ROM switch in depca_close(). + Multi DEPCA bug fix. + 0.38axp 15-sep-94 Special version for Alpha AXP Linux V1.0. + 0.381 12-dec-94 Added DE101 recognition, fix multicast bug. + 0.382 9-feb-95 Fix recognition bug reported by <bkm@star.rl.ac.uk>. + 0.383 22-feb-95 Fix for conflict with VESA SCSI reported by + <stromain@alf.dec.com> + 0.384 17-mar-95 Fix a ring full bug reported by <bkm@star.rl.ac.uk> + 0.385 3-apr-95 Fix a recognition bug reported by + <ryan.niemi@lastfrontier.com> + 0.386 21-apr-95 Fix the last fix...sorry, must be galloping senility + 0.40 25-May-95 Rewrite for portability & updated. + ALPHA support from <jestabro@amt.tay1.dec.com> + 0.41 26-Jun-95 Added verify_area() calls in depca_ioctl() from + suggestion by <heiko@colossus.escape.de> + 0.42 27-Dec-95 Add 'mem' shared memory assignment for loadable + modules. + Add 'adapter_name' for loadable modules when no PROM. + Both above from a suggestion by + <pchen@woodruffs121.residence.gatech.edu>. + Add new multicasting code. + 0.421 22-Apr-96 Fix alloc_device() bug <jari@markkus2.fimr.fi> + 0.422 29-Apr-96 Fix depca_hw_init() bug <jari@markkus2.fimr.fi> + 0.423 7-Jun-96 Fix module load bug <kmg@barco.be> + 0.43 16-Aug-96 Update alloc_device() to conform to de4x5.c + 0.44 1-Sep-97 Fix *_probe() to test check_region() first - bug + reported by <mmogilvi@elbert.uccs.edu> + 0.45 3-Nov-98 Added support for MCA EtherWORKS (DE210/DE212) cards + by <tymm@computer.org> + 0.451 5-Nov-98 Fixed mca stuff cuz I'm a dummy. <tymm@computer.org> + 0.5 14-Nov-98 Re-spin for 2.1.x kernels. + 0.51 27-Jun-99 Correct received packet length for CRC from + report by <worm@dkik.dk> + 0.52 16-Oct-00 Fixes for 2.3 io memory accesses + Fix show-stopper (ints left masked) in depca_interrupt + by <peterd@pnd-pc.demon.co.uk> + 0.53 12-Jan-01 Release resources on failure, bss tidbits + by acme@conectiva.com.br + 0.54 08-Nov-01 use library crc32 functions + by Matt_Domsch@dell.com + 0.55 01-Mar-03 Use EISA/sysfs framework <maz@wild-wind.fr.eu.org> + + ========================================================================= +*/ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/crc32.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/time.h> +#include <linux/types.h> +#include <linux/unistd.h> +#include <linux/ctype.h> +#include <linux/moduleparam.h> +#include <linux/platform_device.h> +#include <linux/bitops.h> + +#include <asm/uaccess.h> +#include <asm/io.h> +#include <asm/dma.h> + +#ifdef CONFIG_MCA +#include <linux/mca.h> +#endif + +#ifdef CONFIG_EISA +#include <linux/eisa.h> +#endif + +#include "depca.h" + +static char version[] __initdata = "depca.c:v0.53 2001/1/12 davies@maniac.ultranet.com\n"; + +#ifdef DEPCA_DEBUG +static int depca_debug = DEPCA_DEBUG; +#else +static int depca_debug = 1; +#endif + +#define DEPCA_NDA 0xffe0 /* No Device Address */ + +#define TX_TIMEOUT (1*HZ) + +/* +** Ethernet PROM defines +*/ +#define PROBE_LENGTH 32 +#define ETH_PROM_SIG 0xAA5500FFUL + +/* +** Set the number of Tx and Rx buffers. Ensure that the memory requested +** here is <= to the amount of shared memory set up by the board switches. +** The number of descriptors MUST BE A POWER OF 2. +** +** total_memory = NUM_RX_DESC*(8+RX_BUFF_SZ) + NUM_TX_DESC*(8+TX_BUFF_SZ) +*/ +#define NUM_RX_DESC 8 /* Number of RX descriptors */ +#define NUM_TX_DESC 8 /* Number of TX descriptors */ +#define RX_BUFF_SZ 1536 /* Buffer size for each Rx buffer */ +#define TX_BUFF_SZ 1536 /* Buffer size for each Tx buffer */ + +/* +** EISA bus defines +*/ +#define DEPCA_EISA_IO_PORTS 0x0c00 /* I/O port base address, slot 0 */ + +/* +** ISA Bus defines +*/ +#define DEPCA_RAM_BASE_ADDRESSES {0xc0000,0xd0000,0xe0000,0x00000} +#define DEPCA_TOTAL_SIZE 0x10 + +static struct { + u_long iobase; + struct platform_device *device; +} depca_io_ports[] = { + { 0x300, NULL }, + { 0x200, NULL }, + { 0 , NULL }, +}; + +/* +** Name <-> Adapter mapping +*/ +#define DEPCA_SIGNATURE {"DEPCA",\ + "DE100","DE101",\ + "DE200","DE201","DE202",\ + "DE210","DE212",\ + "DE422",\ + ""} + +static char* __initdata depca_signature[] = DEPCA_SIGNATURE; + +enum depca_type { + DEPCA, de100, de101, de200, de201, de202, de210, de212, de422, unknown +}; + +static char depca_string[] = "depca"; + +static int depca_device_remove (struct device *device); + +#ifdef CONFIG_EISA +static struct eisa_device_id depca_eisa_ids[] = { + { "DEC4220", de422 }, + { "" } +}; +MODULE_DEVICE_TABLE(eisa, depca_eisa_ids); + +static int depca_eisa_probe (struct device *device); + +static struct eisa_driver depca_eisa_driver = { + .id_table = depca_eisa_ids, + .driver = { + .name = depca_string, + .probe = depca_eisa_probe, + .remove = __devexit_p (depca_device_remove) + } +}; +#endif + +#ifdef CONFIG_MCA +/* +** Adapter ID for the MCA EtherWORKS DE210/212 adapter +*/ +#define DE210_ID 0x628d +#define DE212_ID 0x6def + +static short depca_mca_adapter_ids[] = { + DE210_ID, + DE212_ID, + 0x0000 +}; + +static char *depca_mca_adapter_name[] = { + "DEC EtherWORKS MC Adapter (DE210)", + "DEC EtherWORKS MC Adapter (DE212)", + NULL +}; + +static enum depca_type depca_mca_adapter_type[] = { + de210, + de212, + 0 +}; + +static int depca_mca_probe (struct device *); + +static struct mca_driver depca_mca_driver = { + .id_table = depca_mca_adapter_ids, + .driver = { + .name = depca_string, + .bus = &mca_bus_type, + .probe = depca_mca_probe, + .remove = __devexit_p(depca_device_remove), + }, +}; +#endif + +static int depca_isa_probe (struct platform_device *); + +static int __devexit depca_isa_remove(struct platform_device *pdev) +{ + return depca_device_remove(&pdev->dev); +} + +static struct platform_driver depca_isa_driver = { + .probe = depca_isa_probe, + .remove = __devexit_p(depca_isa_remove), + .driver = { + .name = depca_string, + }, +}; + +/* +** Miscellaneous info... +*/ +#define DEPCA_STRLEN 16 + +/* +** Memory Alignment. Each descriptor is 4 longwords long. To force a +** particular alignment on the TX descriptor, adjust DESC_SKIP_LEN and +** DESC_ALIGN. DEPCA_ALIGN aligns the start address of the private memory area +** and hence the RX descriptor ring's first entry. +*/ +#define DEPCA_ALIGN4 ((u_long)4 - 1) /* 1 longword align */ +#define DEPCA_ALIGN8 ((u_long)8 - 1) /* 2 longword (quadword) align */ +#define DEPCA_ALIGN DEPCA_ALIGN8 /* Keep the LANCE happy... */ + +/* +** The DEPCA Rx and Tx ring descriptors. +*/ +struct depca_rx_desc { + volatile s32 base; + s16 buf_length; /* This length is negative 2's complement! */ + s16 msg_length; /* This length is "normal". */ +}; + +struct depca_tx_desc { + volatile s32 base; + s16 length; /* This length is negative 2's complement! */ + s16 misc; /* Errors and TDR info */ +}; + +#define LA_MASK 0x0000ffff /* LANCE address mask for mapping network RAM + to LANCE memory address space */ + +/* +** The Lance initialization block, described in databook, in common memory. +*/ +struct depca_init { + u16 mode; /* Mode register */ + u8 phys_addr[ETH_ALEN]; /* Physical ethernet address */ + u8 mcast_table[8]; /* Multicast Hash Table. */ + u32 rx_ring; /* Rx ring base pointer & ring length */ + u32 tx_ring; /* Tx ring base pointer & ring length */ +}; + +#define DEPCA_PKT_STAT_SZ 16 +#define DEPCA_PKT_BIN_SZ 128 /* Should be >=100 unless you + increase DEPCA_PKT_STAT_SZ */ +struct depca_private { + char adapter_name[DEPCA_STRLEN]; /* /proc/ioports string */ + enum depca_type adapter; /* Adapter type */ + enum { + DEPCA_BUS_MCA = 1, + DEPCA_BUS_ISA, + DEPCA_BUS_EISA, + } depca_bus; /* type of bus */ + struct depca_init init_block; /* Shadow Initialization block */ +/* CPU address space fields */ + struct depca_rx_desc __iomem *rx_ring; /* Pointer to start of RX descriptor ring */ + struct depca_tx_desc __iomem *tx_ring; /* Pointer to start of TX descriptor ring */ + void __iomem *rx_buff[NUM_RX_DESC]; /* CPU virt address of sh'd memory buffs */ + void __iomem *tx_buff[NUM_TX_DESC]; /* CPU virt address of sh'd memory buffs */ + void __iomem *sh_mem; /* CPU mapped virt address of device RAM */ + u_long mem_start; /* Bus address of device RAM (before remap) */ + u_long mem_len; /* device memory size */ +/* Device address space fields */ + u_long device_ram_start; /* Start of RAM in device addr space */ +/* Offsets used in both address spaces */ + u_long rx_ring_offset; /* Offset from start of RAM to rx_ring */ + u_long tx_ring_offset; /* Offset from start of RAM to tx_ring */ + u_long buffs_offset; /* LANCE Rx and Tx buffers start address. */ +/* Kernel-only (not device) fields */ + int rx_new, tx_new; /* The next free ring entry */ + int rx_old, tx_old; /* The ring entries to be free()ed. */ + spinlock_t lock; + struct { /* Private stats counters */ + u32 bins[DEPCA_PKT_STAT_SZ]; + u32 unicast; + u32 multicast; + u32 broadcast; + u32 excessive_collisions; + u32 tx_underruns; + u32 excessive_underruns; + } pktStats; + int txRingMask; /* TX ring mask */ + int rxRingMask; /* RX ring mask */ + s32 rx_rlen; /* log2(rxRingMask+1) for the descriptors */ + s32 tx_rlen; /* log2(txRingMask+1) for the descriptors */ +}; + +/* +** The transmit ring full condition is described by the tx_old and tx_new +** pointers by: +** tx_old = tx_new Empty ring +** tx_old = tx_new+1 Full ring +** tx_old+txRingMask = tx_new Full ring (wrapped condition) +*/ +#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ + lp->tx_old+lp->txRingMask-lp->tx_new:\ + lp->tx_old -lp->tx_new-1) + +/* +** Public Functions +*/ +static int depca_open(struct net_device *dev); +static netdev_tx_t depca_start_xmit(struct sk_buff *skb, + struct net_device *dev); +static irqreturn_t depca_interrupt(int irq, void *dev_id); +static int depca_close(struct net_device *dev); +static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +static void depca_tx_timeout(struct net_device *dev); +static void set_multicast_list(struct net_device *dev); + +/* +** Private functions +*/ +static void depca_init_ring(struct net_device *dev); +static int depca_rx(struct net_device *dev); +static int depca_tx(struct net_device *dev); + +static void LoadCSRs(struct net_device *dev); +static int InitRestartDepca(struct net_device *dev); +static int DepcaSignature(char *name, u_long paddr); +static int DevicePresent(u_long ioaddr); +static int get_hw_addr(struct net_device *dev); +static void SetMulticastFilter(struct net_device *dev); +static int load_packet(struct net_device *dev, struct sk_buff *skb); +static void depca_dbg_open(struct net_device *dev); + +static u_char de1xx_irq[] __initdata = { 2, 3, 4, 5, 7, 9, 0 }; +static u_char de2xx_irq[] __initdata = { 5, 9, 10, 11, 15, 0 }; +static u_char de422_irq[] __initdata = { 5, 9, 10, 11, 0 }; +static u_char *depca_irq; + +static int irq; +static int io; +static char *adapter_name; +static int mem; /* For loadable module assignment + use insmod mem=0x????? .... */ +module_param (irq, int, 0); +module_param (io, int, 0); +module_param (adapter_name, charp, 0); +module_param (mem, int, 0); +MODULE_PARM_DESC(irq, "DEPCA IRQ number"); +MODULE_PARM_DESC(io, "DEPCA I/O base address"); +MODULE_PARM_DESC(adapter_name, "DEPCA adapter name"); +MODULE_PARM_DESC(mem, "DEPCA shared memory address"); +MODULE_LICENSE("GPL"); + +/* +** Miscellaneous defines... +*/ +#define STOP_DEPCA \ + outw(CSR0, DEPCA_ADDR);\ + outw(STOP, DEPCA_DATA) + +static const struct net_device_ops depca_netdev_ops = { + .ndo_open = depca_open, + .ndo_start_xmit = depca_start_xmit, + .ndo_stop = depca_close, + .ndo_set_rx_mode = set_multicast_list, + .ndo_do_ioctl = depca_ioctl, + .ndo_tx_timeout = depca_tx_timeout, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, +}; + +static int __init depca_hw_init (struct net_device *dev, struct device *device) +{ + struct depca_private *lp; + int i, j, offset, netRAM, mem_len, status = 0; + s16 nicsr; + u_long ioaddr; + u_long mem_start; + + /* + * We are now supposed to enter this function with the + * following fields filled with proper values : + * + * dev->base_addr + * lp->mem_start + * lp->depca_bus + * lp->adapter + * + * dev->irq can be set if known from device configuration (on + * MCA or EISA) or module option. Otherwise, it will be auto + * detected. + */ + + ioaddr = dev->base_addr; + + STOP_DEPCA; + + nicsr = inb(DEPCA_NICSR); + nicsr = ((nicsr & ~SHE & ~RBE & ~IEN) | IM); + outb(nicsr, DEPCA_NICSR); + + if (inw(DEPCA_DATA) != STOP) { + return -ENXIO; + } + + lp = netdev_priv(dev); + mem_start = lp->mem_start; + + if (!mem_start || lp->adapter < DEPCA || lp->adapter >=unknown) + return -ENXIO; + + printk("%s: %s at 0x%04lx", + dev_name(device), depca_signature[lp->adapter], ioaddr); + + switch (lp->depca_bus) { +#ifdef CONFIG_MCA + case DEPCA_BUS_MCA: + printk(" (MCA slot %d)", to_mca_device(device)->slot + 1); + break; +#endif + +#ifdef CONFIG_EISA + case DEPCA_BUS_EISA: + printk(" (EISA slot %d)", to_eisa_device(device)->slot); + break; +#endif + + case DEPCA_BUS_ISA: + break; + + default: + printk("Unknown DEPCA bus %d\n", lp->depca_bus); + return -ENXIO; + } + + printk(", h/w address "); + status = get_hw_addr(dev); + printk("%pM", dev->dev_addr); + if (status != 0) { + printk(" which has an Ethernet PROM CRC error.\n"); + return -ENXIO; + } + + /* Set up the maximum amount of network RAM(kB) */ + netRAM = ((lp->adapter != DEPCA) ? 64 : 48); + if ((nicsr & _128KB) && (lp->adapter == de422)) + netRAM = 128; + + /* Shared Memory Base Address */ + if (nicsr & BUF) { + nicsr &= ~BS; /* DEPCA RAM in top 32k */ + netRAM -= 32; + + /* Only EISA/ISA needs start address to be re-computed */ + if (lp->depca_bus != DEPCA_BUS_MCA) + mem_start += 0x8000; + } + + if ((mem_len = (NUM_RX_DESC * (sizeof(struct depca_rx_desc) + RX_BUFF_SZ) + NUM_TX_DESC * (sizeof(struct depca_tx_desc) + TX_BUFF_SZ) + sizeof(struct depca_init))) + > (netRAM << 10)) { + printk(",\n requests %dkB RAM: only %dkB is available!\n", (mem_len >> 10), netRAM); + return -ENXIO; + } + + printk(",\n has %dkB RAM at 0x%.5lx", netRAM, mem_start); + + /* Enable the shadow RAM. */ + if (lp->adapter != DEPCA) { + nicsr |= SHE; + outb(nicsr, DEPCA_NICSR); + } + + spin_lock_init(&lp->lock); + sprintf(lp->adapter_name, "%s (%s)", + depca_signature[lp->adapter], dev_name(device)); + status = -EBUSY; + + /* Initialisation Block */ + if (!request_mem_region (mem_start, mem_len, lp->adapter_name)) { + printk(KERN_ERR "depca: cannot request ISA memory, aborting\n"); + goto out_priv; + } + + status = -EIO; + lp->sh_mem = ioremap(mem_start, mem_len); + if (lp->sh_mem == NULL) { + printk(KERN_ERR "depca: cannot remap ISA memory, aborting\n"); + goto out1; + } + + lp->mem_start = mem_start; + lp->mem_len = mem_len; + lp->device_ram_start = mem_start & LA_MASK; + + offset = 0; + offset += sizeof(struct depca_init); + + /* Tx & Rx descriptors (aligned to a quadword boundary) */ + offset = (offset + DEPCA_ALIGN) & ~DEPCA_ALIGN; + lp->rx_ring = lp->sh_mem + offset; + lp->rx_ring_offset = offset; + + offset += (sizeof(struct depca_rx_desc) * NUM_RX_DESC); + lp->tx_ring = lp->sh_mem + offset; + lp->tx_ring_offset = offset; + + offset += (sizeof(struct depca_tx_desc) * NUM_TX_DESC); + + lp->buffs_offset = offset; + + /* Finish initialising the ring information. */ + lp->rxRingMask = NUM_RX_DESC - 1; + lp->txRingMask = NUM_TX_DESC - 1; + + /* Calculate Tx/Rx RLEN size for the descriptors. */ + for (i = 0, j = lp->rxRingMask; j > 0; i++) { + j >>= 1; + } + lp->rx_rlen = (s32) (i << 29); + for (i = 0, j = lp->txRingMask; j > 0; i++) { + j >>= 1; + } + lp->tx_rlen = (s32) (i << 29); + + /* Load the initialisation block */ + depca_init_ring(dev); + + /* Initialise the control and status registers */ + LoadCSRs(dev); + + /* Enable DEPCA board interrupts for autoprobing */ + nicsr = ((nicsr & ~IM) | IEN); + outb(nicsr, DEPCA_NICSR); + + /* To auto-IRQ we enable the initialization-done and DMA err, + interrupts. For now we will always get a DMA error. */ + if (dev->irq < 2) { + unsigned char irqnum; + unsigned long irq_mask, delay; + + irq_mask = probe_irq_on(); + + /* Assign the correct irq list */ + switch (lp->adapter) { + case DEPCA: + case de100: + case de101: + depca_irq = de1xx_irq; + break; + case de200: + case de201: + case de202: + case de210: + case de212: + depca_irq = de2xx_irq; + break; + case de422: + depca_irq = de422_irq; + break; + + default: + break; /* Not reached */ + } + + /* Trigger an initialization just for the interrupt. */ + outw(INEA | INIT, DEPCA_DATA); + + delay = jiffies + HZ/50; + while (time_before(jiffies, delay)) + yield(); + + irqnum = probe_irq_off(irq_mask); + + status = -ENXIO; + if (!irqnum) { + printk(" and failed to detect IRQ line.\n"); + goto out2; + } else { + for (dev->irq = 0, i = 0; (depca_irq[i]) && (!dev->irq); i++) + if (irqnum == depca_irq[i]) { + dev->irq = irqnum; + printk(" and uses IRQ%d.\n", dev->irq); + } + + if (!dev->irq) { + printk(" but incorrect IRQ line detected.\n"); + goto out2; + } + } + } else { + printk(" and assigned IRQ%d.\n", dev->irq); + } + + if (depca_debug > 1) { + printk(version); + } + + /* The DEPCA-specific entries in the device structure. */ + dev->netdev_ops = &depca_netdev_ops; + dev->watchdog_timeo = TX_TIMEOUT; + + dev->mem_start = 0; + + dev_set_drvdata(device, dev); + SET_NETDEV_DEV (dev, device); + + status = register_netdev(dev); + if (status == 0) + return 0; +out2: + iounmap(lp->sh_mem); +out1: + release_mem_region (mem_start, mem_len); +out_priv: + return status; +} + + +static int depca_open(struct net_device *dev) +{ + struct depca_private *lp = netdev_priv(dev); + u_long ioaddr = dev->base_addr; + s16 nicsr; + int status = 0; + + STOP_DEPCA; + nicsr = inb(DEPCA_NICSR); + + /* Make sure the shadow RAM is enabled */ + if (lp->adapter != DEPCA) { + nicsr |= SHE; + outb(nicsr, DEPCA_NICSR); + } + + /* Re-initialize the DEPCA... */ + depca_init_ring(dev); + LoadCSRs(dev); + + depca_dbg_open(dev); + + if (request_irq(dev->irq, depca_interrupt, 0, lp->adapter_name, dev)) { + printk("depca_open(): Requested IRQ%d is busy\n", dev->irq); + status = -EAGAIN; + } else { + + /* Enable DEPCA board interrupts and turn off LED */ + nicsr = ((nicsr & ~IM & ~LED) | IEN); + outb(nicsr, DEPCA_NICSR); + outw(CSR0, DEPCA_ADDR); + + netif_start_queue(dev); + + status = InitRestartDepca(dev); + + if (depca_debug > 1) { + printk("CSR0: 0x%4.4x\n", inw(DEPCA_DATA)); + printk("nicsr: 0x%02x\n", inb(DEPCA_NICSR)); + } + } + return status; +} + +/* Initialize the lance Rx and Tx descriptor rings. */ +static void depca_init_ring(struct net_device *dev) +{ + struct depca_private *lp = netdev_priv(dev); + u_int i; + u_long offset; + + /* Lock out other processes whilst setting up the hardware */ + netif_stop_queue(dev); + + lp->rx_new = lp->tx_new = 0; + lp->rx_old = lp->tx_old = 0; + + /* Initialize the base address and length of each buffer in the ring */ + for (i = 0; i <= lp->rxRingMask; i++) { + offset = lp->buffs_offset + i * RX_BUFF_SZ; + writel((lp->device_ram_start + offset) | R_OWN, &lp->rx_ring[i].base); + writew(-RX_BUFF_SZ, &lp->rx_ring[i].buf_length); + lp->rx_buff[i] = lp->sh_mem + offset; + } + + for (i = 0; i <= lp->txRingMask; i++) { + offset = lp->buffs_offset + (i + lp->rxRingMask + 1) * TX_BUFF_SZ; + writel((lp->device_ram_start + offset) & 0x00ffffff, &lp->tx_ring[i].base); + lp->tx_buff[i] = lp->sh_mem + offset; + } + + /* Set up the initialization block */ + lp->init_block.rx_ring = (lp->device_ram_start + lp->rx_ring_offset) | lp->rx_rlen; + lp->init_block.tx_ring = (lp->device_ram_start + lp->tx_ring_offset) | lp->tx_rlen; + + SetMulticastFilter(dev); + + for (i = 0; i < ETH_ALEN; i++) { + lp->init_block.phys_addr[i] = dev->dev_addr[i]; + } + + lp->init_block.mode = 0x0000; /* Enable the Tx and Rx */ +} + + +static void depca_tx_timeout(struct net_device *dev) +{ + u_long ioaddr = dev->base_addr; + + printk("%s: transmit timed out, status %04x, resetting.\n", dev->name, inw(DEPCA_DATA)); + + STOP_DEPCA; + depca_init_ring(dev); + LoadCSRs(dev); + dev->trans_start = jiffies; /* prevent tx timeout */ + netif_wake_queue(dev); + InitRestartDepca(dev); +} + + +/* +** Writes a socket buffer to TX descriptor ring and starts transmission +*/ +static netdev_tx_t depca_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct depca_private *lp = netdev_priv(dev); + u_long ioaddr = dev->base_addr; + int status = 0; + + /* Transmitter timeout, serious problems. */ + if (skb->len < 1) + goto out; + + if (skb_padto(skb, ETH_ZLEN)) + goto out; + + netif_stop_queue(dev); + + if (TX_BUFFS_AVAIL) { /* Fill in a Tx ring entry */ + status = load_packet(dev, skb); + + if (!status) { + /* Trigger an immediate send demand. */ + outw(CSR0, DEPCA_ADDR); + outw(INEA | TDMD, DEPCA_DATA); + + dev_kfree_skb(skb); + } + if (TX_BUFFS_AVAIL) + netif_start_queue(dev); + } else + status = NETDEV_TX_LOCKED; + + out: + return status; +} + +/* +** The DEPCA interrupt handler. +*/ +static irqreturn_t depca_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct depca_private *lp; + s16 csr0, nicsr; + u_long ioaddr; + + if (dev == NULL) { + printk("depca_interrupt(): irq %d for unknown device.\n", irq); + return IRQ_NONE; + } + + lp = netdev_priv(dev); + ioaddr = dev->base_addr; + + spin_lock(&lp->lock); + + /* mask the DEPCA board interrupts and turn on the LED */ + nicsr = inb(DEPCA_NICSR); + nicsr |= (IM | LED); + outb(nicsr, DEPCA_NICSR); + + outw(CSR0, DEPCA_ADDR); + csr0 = inw(DEPCA_DATA); + + /* Acknowledge all of the current interrupt sources ASAP. */ + outw(csr0 & INTE, DEPCA_DATA); + + if (csr0 & RINT) /* Rx interrupt (packet arrived) */ + depca_rx(dev); + + if (csr0 & TINT) /* Tx interrupt (packet sent) */ + depca_tx(dev); + + /* Any resources available? */ + if ((TX_BUFFS_AVAIL >= 0) && netif_queue_stopped(dev)) { + netif_wake_queue(dev); + } + + /* Unmask the DEPCA board interrupts and turn off the LED */ + nicsr = (nicsr & ~IM & ~LED); + outb(nicsr, DEPCA_NICSR); + + spin_unlock(&lp->lock); + return IRQ_HANDLED; +} + +/* Called with lp->lock held */ +static int depca_rx(struct net_device *dev) +{ + struct depca_private *lp = netdev_priv(dev); + int i, entry; + s32 status; + + for (entry = lp->rx_new; !(readl(&lp->rx_ring[entry].base) & R_OWN); entry = lp->rx_new) { + status = readl(&lp->rx_ring[entry].base) >> 16; + if (status & R_STP) { /* Remember start of frame */ + lp->rx_old = entry; + } + if (status & R_ENP) { /* Valid frame status */ + if (status & R_ERR) { /* There was an error. */ + dev->stats.rx_errors++; /* Update the error stats. */ + if (status & R_FRAM) + dev->stats.rx_frame_errors++; + if (status & R_OFLO) + dev->stats.rx_over_errors++; + if (status & R_CRC) + dev->stats.rx_crc_errors++; + if (status & R_BUFF) + dev->stats.rx_fifo_errors++; + } else { + short len, pkt_len = readw(&lp->rx_ring[entry].msg_length) - 4; + struct sk_buff *skb; + + skb = dev_alloc_skb(pkt_len + 2); + if (skb != NULL) { + unsigned char *buf; + skb_reserve(skb, 2); /* 16 byte align the IP header */ + buf = skb_put(skb, pkt_len); + if (entry < lp->rx_old) { /* Wrapped buffer */ + len = (lp->rxRingMask - lp->rx_old + 1) * RX_BUFF_SZ; + memcpy_fromio(buf, lp->rx_buff[lp->rx_old], len); + memcpy_fromio(buf + len, lp->rx_buff[0], pkt_len - len); + } else { /* Linear buffer */ + memcpy_fromio(buf, lp->rx_buff[lp->rx_old], pkt_len); + } + + /* + ** Notify the upper protocol layers that there is another + ** packet to handle + */ + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + + /* + ** Update stats + */ + dev->stats.rx_packets++; + dev->stats.rx_bytes += pkt_len; + for (i = 1; i < DEPCA_PKT_STAT_SZ - 1; i++) { + if (pkt_len < (i * DEPCA_PKT_BIN_SZ)) { + lp->pktStats.bins[i]++; + i = DEPCA_PKT_STAT_SZ; + } + } + if (is_multicast_ether_addr(buf)) { + if (is_broadcast_ether_addr(buf)) { + lp->pktStats.broadcast++; + } else { + lp->pktStats.multicast++; + } + } else if (compare_ether_addr(buf, dev->dev_addr) == 0) { + lp->pktStats.unicast++; + } + + lp->pktStats.bins[0]++; /* Duplicates stats.rx_packets */ + if (lp->pktStats.bins[0] == 0) { /* Reset counters */ + memset((char *) &lp->pktStats, 0, sizeof(lp->pktStats)); + } + } else { + printk("%s: Memory squeeze, deferring packet.\n", dev->name); + dev->stats.rx_dropped++; /* Really, deferred. */ + break; + } + } + /* Change buffer ownership for this last frame, back to the adapter */ + for (; lp->rx_old != entry; lp->rx_old = (lp->rx_old + 1) & lp->rxRingMask) { + writel(readl(&lp->rx_ring[lp->rx_old].base) | R_OWN, &lp->rx_ring[lp->rx_old].base); + } + writel(readl(&lp->rx_ring[entry].base) | R_OWN, &lp->rx_ring[entry].base); + } + + /* + ** Update entry information + */ + lp->rx_new = (lp->rx_new + 1) & lp->rxRingMask; + } + + return 0; +} + +/* +** Buffer sent - check for buffer errors. +** Called with lp->lock held +*/ +static int depca_tx(struct net_device *dev) +{ + struct depca_private *lp = netdev_priv(dev); + int entry; + s32 status; + u_long ioaddr = dev->base_addr; + + for (entry = lp->tx_old; entry != lp->tx_new; entry = lp->tx_old) { + status = readl(&lp->tx_ring[entry].base) >> 16; + + if (status < 0) { /* Packet not yet sent! */ + break; + } else if (status & T_ERR) { /* An error occurred. */ + status = readl(&lp->tx_ring[entry].misc); + dev->stats.tx_errors++; + if (status & TMD3_RTRY) + dev->stats.tx_aborted_errors++; + if (status & TMD3_LCAR) + dev->stats.tx_carrier_errors++; + if (status & TMD3_LCOL) + dev->stats.tx_window_errors++; + if (status & TMD3_UFLO) + dev->stats.tx_fifo_errors++; + if (status & (TMD3_BUFF | TMD3_UFLO)) { + /* Trigger an immediate send demand. */ + outw(CSR0, DEPCA_ADDR); + outw(INEA | TDMD, DEPCA_DATA); + } + } else if (status & (T_MORE | T_ONE)) { + dev->stats.collisions++; + } else { + dev->stats.tx_packets++; + } + + /* Update all the pointers */ + lp->tx_old = (lp->tx_old + 1) & lp->txRingMask; + } + + return 0; +} + +static int depca_close(struct net_device *dev) +{ + struct depca_private *lp = netdev_priv(dev); + s16 nicsr; + u_long ioaddr = dev->base_addr; + + netif_stop_queue(dev); + + outw(CSR0, DEPCA_ADDR); + + if (depca_debug > 1) { + printk("%s: Shutting down ethercard, status was %2.2x.\n", dev->name, inw(DEPCA_DATA)); + } + + /* + ** We stop the DEPCA here -- it occasionally polls + ** memory if we don't. + */ + outw(STOP, DEPCA_DATA); + + /* + ** Give back the ROM in case the user wants to go to DOS + */ + if (lp->adapter != DEPCA) { + nicsr = inb(DEPCA_NICSR); + nicsr &= ~SHE; + outb(nicsr, DEPCA_NICSR); + } + + /* + ** Free the associated irq + */ + free_irq(dev->irq, dev); + return 0; +} + +static void LoadCSRs(struct net_device *dev) +{ + struct depca_private *lp = netdev_priv(dev); + u_long ioaddr = dev->base_addr; + + outw(CSR1, DEPCA_ADDR); /* initialisation block address LSW */ + outw((u16) lp->device_ram_start, DEPCA_DATA); + outw(CSR2, DEPCA_ADDR); /* initialisation block address MSW */ + outw((u16) (lp->device_ram_start >> 16), DEPCA_DATA); + outw(CSR3, DEPCA_ADDR); /* ALE control */ + outw(ACON, DEPCA_DATA); + + outw(CSR0, DEPCA_ADDR); /* Point back to CSR0 */ +} + +static int InitRestartDepca(struct net_device *dev) +{ + struct depca_private *lp = netdev_priv(dev); + u_long ioaddr = dev->base_addr; + int i, status = 0; + + /* Copy the shadow init_block to shared memory */ + memcpy_toio(lp->sh_mem, &lp->init_block, sizeof(struct depca_init)); + + outw(CSR0, DEPCA_ADDR); /* point back to CSR0 */ + outw(INIT, DEPCA_DATA); /* initialize DEPCA */ + + /* wait for lance to complete initialisation */ + for (i = 0; (i < 100) && !(inw(DEPCA_DATA) & IDON); i++); + + if (i != 100) { + /* clear IDON by writing a "1", enable interrupts and start lance */ + outw(IDON | INEA | STRT, DEPCA_DATA); + if (depca_debug > 2) { + printk("%s: DEPCA open after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA)); + } + } else { + printk("%s: DEPCA unopen after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA)); + status = -1; + } + + return status; +} + +/* +** Set or clear the multicast filter for this adaptor. +*/ +static void set_multicast_list(struct net_device *dev) +{ + struct depca_private *lp = netdev_priv(dev); + u_long ioaddr = dev->base_addr; + + netif_stop_queue(dev); + while (lp->tx_old != lp->tx_new); /* Wait for the ring to empty */ + + STOP_DEPCA; /* Temporarily stop the depca. */ + depca_init_ring(dev); /* Initialize the descriptor rings */ + + if (dev->flags & IFF_PROMISC) { /* Set promiscuous mode */ + lp->init_block.mode |= PROM; + } else { + SetMulticastFilter(dev); + lp->init_block.mode &= ~PROM; /* Unset promiscuous mode */ + } + + LoadCSRs(dev); /* Reload CSR3 */ + InitRestartDepca(dev); /* Resume normal operation. */ + netif_start_queue(dev); /* Unlock the TX ring */ +} + +/* +** Calculate the hash code and update the logical address filter +** from a list of ethernet multicast addresses. +** Big endian crc one liner is mine, all mine, ha ha ha ha! +** LANCE calculates its hash codes big endian. +*/ +static void SetMulticastFilter(struct net_device *dev) +{ + struct depca_private *lp = netdev_priv(dev); + struct netdev_hw_addr *ha; + int i, j, bit, byte; + u16 hashcode; + u32 crc; + + if (dev->flags & IFF_ALLMULTI) { /* Set all multicast bits */ + for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) { + lp->init_block.mcast_table[i] = (char) 0xff; + } + } else { + for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) { /* Clear the multicast table */ + lp->init_block.mcast_table[i] = 0; + } + /* Add multicast addresses */ + netdev_for_each_mc_addr(ha, dev) { + crc = ether_crc(ETH_ALEN, ha->addr); + hashcode = (crc & 1); /* hashcode is 6 LSb of CRC ... */ + for (j = 0; j < 5; j++) { /* ... in reverse order. */ + hashcode = (hashcode << 1) | ((crc >>= 1) & 1); + } + + byte = hashcode >> 3; /* bit[3-5] -> byte in filter */ + bit = 1 << (hashcode & 0x07); /* bit[0-2] -> bit in byte */ + lp->init_block.mcast_table[byte] |= bit; + } + } +} + +static int __init depca_common_init (u_long ioaddr, struct net_device **devp) +{ + int status = 0; + + if (!request_region (ioaddr, DEPCA_TOTAL_SIZE, depca_string)) { + status = -EBUSY; + goto out; + } + + if (DevicePresent(ioaddr)) { + status = -ENODEV; + goto out_release; + } + + if (!(*devp = alloc_etherdev (sizeof (struct depca_private)))) { + status = -ENOMEM; + goto out_release; + } + + return 0; + + out_release: + release_region (ioaddr, DEPCA_TOTAL_SIZE); + out: + return status; +} + +#ifdef CONFIG_MCA +/* +** Microchannel bus I/O device probe +*/ +static int __init depca_mca_probe(struct device *device) +{ + unsigned char pos[2]; + unsigned char where; + unsigned long iobase, mem_start; + int irq, err; + struct mca_device *mdev = to_mca_device (device); + struct net_device *dev; + struct depca_private *lp; + + /* + ** Search for the adapter. If an address has been given, search + ** specifically for the card at that address. Otherwise find the + ** first card in the system. + */ + + pos[0] = mca_device_read_stored_pos(mdev, 2); + pos[1] = mca_device_read_stored_pos(mdev, 3); + + /* + ** IO of card is handled by bits 1 and 2 of pos0. + ** + ** bit2 bit1 IO + ** 0 0 0x2c00 + ** 0 1 0x2c10 + ** 1 0 0x2c20 + ** 1 1 0x2c30 + */ + where = (pos[0] & 6) >> 1; + iobase = 0x2c00 + (0x10 * where); + + /* + ** Found the adapter we were looking for. Now start setting it up. + ** + ** First work on decoding the IRQ. It's stored in the lower 4 bits + ** of pos1. Bits are as follows (from the ADF file): + ** + ** Bits + ** 3 2 1 0 IRQ + ** -------------------- + ** 0 0 1 0 5 + ** 0 0 0 1 9 + ** 0 1 0 0 10 + ** 1 0 0 0 11 + */ + where = pos[1] & 0x0f; + switch (where) { + case 1: + irq = 9; + break; + case 2: + irq = 5; + break; + case 4: + irq = 10; + break; + case 8: + irq = 11; + break; + default: + printk("%s: mca_probe IRQ error. You should never get here (%d).\n", mdev->name, where); + return -EINVAL; + } + + /* + ** Shared memory address of adapter is stored in bits 3-5 of pos0. + ** They are mapped as follows: + ** + ** Bit + ** 5 4 3 Memory Addresses + ** 0 0 0 C0000-CFFFF (64K) + ** 1 0 0 C8000-CFFFF (32K) + ** 0 0 1 D0000-DFFFF (64K) + ** 1 0 1 D8000-DFFFF (32K) + ** 0 1 0 E0000-EFFFF (64K) + ** 1 1 0 E8000-EFFFF (32K) + */ + where = (pos[0] & 0x18) >> 3; + mem_start = 0xc0000 + (where * 0x10000); + if (pos[0] & 0x20) { + mem_start += 0x8000; + } + + /* claim the slot */ + strncpy(mdev->name, depca_mca_adapter_name[mdev->index], + sizeof(mdev->name)); + mca_device_set_claim(mdev, 1); + + /* + ** Get everything allocated and initialized... (almost just + ** like the ISA and EISA probes) + */ + irq = mca_device_transform_irq(mdev, irq); + iobase = mca_device_transform_ioport(mdev, iobase); + + if ((err = depca_common_init (iobase, &dev))) + goto out_unclaim; + + dev->irq = irq; + dev->base_addr = iobase; + lp = netdev_priv(dev); + lp->depca_bus = DEPCA_BUS_MCA; + lp->adapter = depca_mca_adapter_type[mdev->index]; + lp->mem_start = mem_start; + + if ((err = depca_hw_init(dev, device))) + goto out_free; + + return 0; + + out_free: + free_netdev (dev); + release_region (iobase, DEPCA_TOTAL_SIZE); + out_unclaim: + mca_device_set_claim(mdev, 0); + + return err; +} +#endif + +/* +** ISA bus I/O device probe +*/ + +static void __init depca_platform_probe (void) +{ + int i; + struct platform_device *pldev; + + for (i = 0; depca_io_ports[i].iobase; i++) { + depca_io_ports[i].device = NULL; + + /* if an address has been specified on the command + * line, use it (if valid) */ + if (io && io != depca_io_ports[i].iobase) + continue; + + pldev = platform_device_alloc(depca_string, i); + if (!pldev) + continue; + + pldev->dev.platform_data = (void *) depca_io_ports[i].iobase; + depca_io_ports[i].device = pldev; + + if (platform_device_add(pldev)) { + depca_io_ports[i].device = NULL; + pldev->dev.platform_data = NULL; + platform_device_put(pldev); + continue; + } + + if (!pldev->dev.driver) { + /* The driver was not bound to this device, there was + * no hardware at this address. Unregister it, as the + * release function will take care of freeing the + * allocated structure */ + + depca_io_ports[i].device = NULL; + pldev->dev.platform_data = NULL; + platform_device_unregister (pldev); + } + } +} + +static enum depca_type __init depca_shmem_probe (ulong *mem_start) +{ + u_long mem_base[] = DEPCA_RAM_BASE_ADDRESSES; + enum depca_type adapter = unknown; + int i; + + for (i = 0; mem_base[i]; i++) { + *mem_start = mem ? mem : mem_base[i]; + adapter = DepcaSignature (adapter_name, *mem_start); + if (adapter != unknown) + break; + } + + return adapter; +} + +static int __devinit depca_isa_probe (struct platform_device *device) +{ + struct net_device *dev; + struct depca_private *lp; + u_long ioaddr, mem_start = 0; + enum depca_type adapter = unknown; + int status = 0; + + ioaddr = (u_long) device->dev.platform_data; + + if ((status = depca_common_init (ioaddr, &dev))) + goto out; + + adapter = depca_shmem_probe (&mem_start); + + if (adapter == unknown) { + status = -ENODEV; + goto out_free; + } + + dev->base_addr = ioaddr; + dev->irq = irq; /* Use whatever value the user gave + * us, and 0 if he didn't. */ + lp = netdev_priv(dev); + lp->depca_bus = DEPCA_BUS_ISA; + lp->adapter = adapter; + lp->mem_start = mem_start; + + if ((status = depca_hw_init(dev, &device->dev))) + goto out_free; + + return 0; + + out_free: + free_netdev (dev); + release_region (ioaddr, DEPCA_TOTAL_SIZE); + out: + return status; +} + +/* +** EISA callbacks from sysfs. +*/ + +#ifdef CONFIG_EISA +static int __init depca_eisa_probe (struct device *device) +{ + enum depca_type adapter = unknown; + struct eisa_device *edev; + struct net_device *dev; + struct depca_private *lp; + u_long ioaddr, mem_start; + int status = 0; + + edev = to_eisa_device (device); + ioaddr = edev->base_addr + DEPCA_EISA_IO_PORTS; + + if ((status = depca_common_init (ioaddr, &dev))) + goto out; + + /* It would have been nice to get card configuration from the + * card. Unfortunately, this register is write-only (shares + * it's address with the ethernet prom)... As we don't parse + * the EISA configuration structures (yet... :-), just rely on + * the ISA probing to sort it out... */ + + adapter = depca_shmem_probe (&mem_start); + if (adapter == unknown) { + status = -ENODEV; + goto out_free; + } + + dev->base_addr = ioaddr; + dev->irq = irq; + lp = netdev_priv(dev); + lp->depca_bus = DEPCA_BUS_EISA; + lp->adapter = edev->id.driver_data; + lp->mem_start = mem_start; + + if ((status = depca_hw_init(dev, device))) + goto out_free; + + return 0; + + out_free: + free_netdev (dev); + release_region (ioaddr, DEPCA_TOTAL_SIZE); + out: + return status; +} +#endif + +static int __devexit depca_device_remove (struct device *device) +{ + struct net_device *dev; + struct depca_private *lp; + int bus; + + dev = dev_get_drvdata(device); + lp = netdev_priv(dev); + + unregister_netdev (dev); + iounmap (lp->sh_mem); + release_mem_region (lp->mem_start, lp->mem_len); + release_region (dev->base_addr, DEPCA_TOTAL_SIZE); + bus = lp->depca_bus; + free_netdev (dev); + + return 0; +} + +/* +** Look for a particular board name in the on-board Remote Diagnostics +** and Boot (readb) ROM. This will also give us a clue to the network RAM +** base address. +*/ +static int __init DepcaSignature(char *name, u_long base_addr) +{ + u_int i, j, k; + void __iomem *ptr; + char tmpstr[16]; + u_long prom_addr = base_addr + 0xc000; + u_long mem_addr = base_addr + 0x8000; /* 32KB */ + + /* Can't reserve the prom region, it is already marked as + * used, at least on x86. Instead, reserve a memory region a + * board would certainly use. If it works, go ahead. If not, + * run like hell... */ + + if (!request_mem_region (mem_addr, 16, depca_string)) + return unknown; + + /* Copy the first 16 bytes of ROM */ + + ptr = ioremap(prom_addr, 16); + if (ptr == NULL) { + printk(KERN_ERR "depca: I/O remap failed at %lx\n", prom_addr); + return unknown; + } + for (i = 0; i < 16; i++) { + tmpstr[i] = readb(ptr + i); + } + iounmap(ptr); + + release_mem_region (mem_addr, 16); + + /* Check if PROM contains a valid string */ + for (i = 0; *depca_signature[i] != '\0'; i++) { + for (j = 0, k = 0; j < 16 && k < strlen(depca_signature[i]); j++) { + if (depca_signature[i][k] == tmpstr[j]) { /* track signature */ + k++; + } else { /* lost signature; begin search again */ + k = 0; + } + } + if (k == strlen(depca_signature[i])) + break; + } + + /* Check if name string is valid, provided there's no PROM */ + if (name && *name && (i == unknown)) { + for (i = 0; *depca_signature[i] != '\0'; i++) { + if (strcmp(name, depca_signature[i]) == 0) + break; + } + } + + return i; +} + +/* +** Look for a special sequence in the Ethernet station address PROM that +** is common across all DEPCA products. Note that the original DEPCA needs +** its ROM address counter to be initialized and enabled. Only enable +** if the first address octet is a 0x08 - this minimises the chances of +** messing around with some other hardware, but it assumes that this DEPCA +** card initialized itself correctly. +** +** Search the Ethernet address ROM for the signature. Since the ROM address +** counter can start at an arbitrary point, the search must include the entire +** probe sequence length plus the (length_of_the_signature - 1). +** Stop the search IMMEDIATELY after the signature is found so that the +** PROM address counter is correctly positioned at the start of the +** ethernet address for later read out. +*/ +static int __init DevicePresent(u_long ioaddr) +{ + union { + struct { + u32 a; + u32 b; + } llsig; + char Sig[sizeof(u32) << 1]; + } + dev; + short sigLength = 0; + s8 data; + s16 nicsr; + int i, j, status = 0; + + data = inb(DEPCA_PROM); /* clear counter on DEPCA */ + data = inb(DEPCA_PROM); /* read data */ + + if (data == 0x08) { /* Enable counter on DEPCA */ + nicsr = inb(DEPCA_NICSR); + nicsr |= AAC; + outb(nicsr, DEPCA_NICSR); + } + + dev.llsig.a = ETH_PROM_SIG; + dev.llsig.b = ETH_PROM_SIG; + sigLength = sizeof(u32) << 1; + + for (i = 0, j = 0; j < sigLength && i < PROBE_LENGTH + sigLength - 1; i++) { + data = inb(DEPCA_PROM); + if (dev.Sig[j] == data) { /* track signature */ + j++; + } else { /* lost signature; begin search again */ + if (data == dev.Sig[0]) { /* rare case.... */ + j = 1; + } else { + j = 0; + } + } + } + + if (j != sigLength) { + status = -ENODEV; /* search failed */ + } + + return status; +} + +/* +** The DE100 and DE101 PROM accesses were made non-standard for some bizarre +** reason: access the upper half of the PROM with x=0; access the lower half +** with x=1. +*/ +static int __init get_hw_addr(struct net_device *dev) +{ + u_long ioaddr = dev->base_addr; + struct depca_private *lp = netdev_priv(dev); + int i, k, tmp, status = 0; + u_short j, x, chksum; + + x = (((lp->adapter == de100) || (lp->adapter == de101)) ? 1 : 0); + + for (i = 0, k = 0, j = 0; j < 3; j++) { + k <<= 1; + if (k > 0xffff) + k -= 0xffff; + + k += (u_char) (tmp = inb(DEPCA_PROM + x)); + dev->dev_addr[i++] = (u_char) tmp; + k += (u_short) ((tmp = inb(DEPCA_PROM + x)) << 8); + dev->dev_addr[i++] = (u_char) tmp; + + if (k > 0xffff) + k -= 0xffff; + } + if (k == 0xffff) + k = 0; + + chksum = (u_char) inb(DEPCA_PROM + x); + chksum |= (u_short) (inb(DEPCA_PROM + x) << 8); + if (k != chksum) + status = -1; + + return status; +} + +/* +** Load a packet into the shared memory +*/ +static int load_packet(struct net_device *dev, struct sk_buff *skb) +{ + struct depca_private *lp = netdev_priv(dev); + int i, entry, end, len, status = NETDEV_TX_OK; + + entry = lp->tx_new; /* Ring around buffer number. */ + end = (entry + (skb->len - 1) / TX_BUFF_SZ) & lp->txRingMask; + if (!(readl(&lp->tx_ring[end].base) & T_OWN)) { /* Enough room? */ + /* + ** Caution: the write order is important here... don't set up the + ** ownership rights until all the other information is in place. + */ + if (end < entry) { /* wrapped buffer */ + len = (lp->txRingMask - entry + 1) * TX_BUFF_SZ; + memcpy_toio(lp->tx_buff[entry], skb->data, len); + memcpy_toio(lp->tx_buff[0], skb->data + len, skb->len - len); + } else { /* linear buffer */ + memcpy_toio(lp->tx_buff[entry], skb->data, skb->len); + } + + /* set up the buffer descriptors */ + len = (skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len; + for (i = entry; i != end; i = (i+1) & lp->txRingMask) { + /* clean out flags */ + writel(readl(&lp->tx_ring[i].base) & ~T_FLAGS, &lp->tx_ring[i].base); + writew(0x0000, &lp->tx_ring[i].misc); /* clears other error flags */ + writew(-TX_BUFF_SZ, &lp->tx_ring[i].length); /* packet length in buffer */ + len -= TX_BUFF_SZ; + } + /* clean out flags */ + writel(readl(&lp->tx_ring[end].base) & ~T_FLAGS, &lp->tx_ring[end].base); + writew(0x0000, &lp->tx_ring[end].misc); /* clears other error flags */ + writew(-len, &lp->tx_ring[end].length); /* packet length in last buff */ + + /* start of packet */ + writel(readl(&lp->tx_ring[entry].base) | T_STP, &lp->tx_ring[entry].base); + /* end of packet */ + writel(readl(&lp->tx_ring[end].base) | T_ENP, &lp->tx_ring[end].base); + + for (i = end; i != entry; --i) { + /* ownership of packet */ + writel(readl(&lp->tx_ring[i].base) | T_OWN, &lp->tx_ring[i].base); + if (i == 0) + i = lp->txRingMask + 1; + } + writel(readl(&lp->tx_ring[entry].base) | T_OWN, &lp->tx_ring[entry].base); + + lp->tx_new = (++end) & lp->txRingMask; /* update current pointers */ + } else { + status = NETDEV_TX_LOCKED; + } + + return status; +} + +static void depca_dbg_open(struct net_device *dev) +{ + struct depca_private *lp = netdev_priv(dev); + u_long ioaddr = dev->base_addr; + struct depca_init *p = &lp->init_block; + int i; + + if (depca_debug > 1) { + /* Do not copy the shadow init block into shared memory */ + /* Debugging should not affect normal operation! */ + /* The shadow init block will get copied across during InitRestartDepca */ + printk("%s: depca open with irq %d\n", dev->name, dev->irq); + printk("Descriptor head addresses (CPU):\n"); + printk(" 0x%lx 0x%lx\n", (u_long) lp->rx_ring, (u_long) lp->tx_ring); + printk("Descriptor addresses (CPU):\nRX: "); + for (i = 0; i < lp->rxRingMask; i++) { + if (i < 3) { + printk("%p ", &lp->rx_ring[i].base); + } + } + printk("...%p\n", &lp->rx_ring[i].base); + printk("TX: "); + for (i = 0; i < lp->txRingMask; i++) { + if (i < 3) { + printk("%p ", &lp->tx_ring[i].base); + } + } + printk("...%p\n", &lp->tx_ring[i].base); + printk("\nDescriptor buffers (Device):\nRX: "); + for (i = 0; i < lp->rxRingMask; i++) { + if (i < 3) { + printk("0x%8.8x ", readl(&lp->rx_ring[i].base)); + } + } + printk("...0x%8.8x\n", readl(&lp->rx_ring[i].base)); + printk("TX: "); + for (i = 0; i < lp->txRingMask; i++) { + if (i < 3) { + printk("0x%8.8x ", readl(&lp->tx_ring[i].base)); + } + } + printk("...0x%8.8x\n", readl(&lp->tx_ring[i].base)); + printk("Initialisation block at 0x%8.8lx(Phys)\n", lp->mem_start); + printk(" mode: 0x%4.4x\n", p->mode); + printk(" physical address: %pM\n", p->phys_addr); + printk(" multicast hash table: "); + for (i = 0; i < (HASH_TABLE_LEN >> 3) - 1; i++) { + printk("%2.2x:", p->mcast_table[i]); + } + printk("%2.2x\n", p->mcast_table[i]); + printk(" rx_ring at: 0x%8.8x\n", p->rx_ring); + printk(" tx_ring at: 0x%8.8x\n", p->tx_ring); + printk("buffers (Phys): 0x%8.8lx\n", lp->mem_start + lp->buffs_offset); + printk("Ring size:\nRX: %d Log2(rxRingMask): 0x%8.8x\n", (int) lp->rxRingMask + 1, lp->rx_rlen); + printk("TX: %d Log2(txRingMask): 0x%8.8x\n", (int) lp->txRingMask + 1, lp->tx_rlen); + outw(CSR2, DEPCA_ADDR); + printk("CSR2&1: 0x%4.4x", inw(DEPCA_DATA)); + outw(CSR1, DEPCA_ADDR); + printk("%4.4x\n", inw(DEPCA_DATA)); + outw(CSR3, DEPCA_ADDR); + printk("CSR3: 0x%4.4x\n", inw(DEPCA_DATA)); + } +} + +/* +** Perform IOCTL call functions here. Some are privileged operations and the +** effective uid is checked in those cases. +** All multicast IOCTLs will not work here and are for testing purposes only. +*/ +static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct depca_private *lp = netdev_priv(dev); + struct depca_ioctl *ioc = (struct depca_ioctl *) &rq->ifr_ifru; + int i, status = 0; + u_long ioaddr = dev->base_addr; + union { + u8 addr[(HASH_TABLE_LEN * ETH_ALEN)]; + u16 sval[(HASH_TABLE_LEN * ETH_ALEN) >> 1]; + u32 lval[(HASH_TABLE_LEN * ETH_ALEN) >> 2]; + } tmp; + unsigned long flags; + void *buf; + + switch (ioc->cmd) { + case DEPCA_GET_HWADDR: /* Get the hardware address */ + for (i = 0; i < ETH_ALEN; i++) { + tmp.addr[i] = dev->dev_addr[i]; + } + ioc->len = ETH_ALEN; + if (copy_to_user(ioc->data, tmp.addr, ioc->len)) + return -EFAULT; + break; + + case DEPCA_SET_HWADDR: /* Set the hardware address */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN)) + return -EFAULT; + for (i = 0; i < ETH_ALEN; i++) { + dev->dev_addr[i] = tmp.addr[i]; + } + netif_stop_queue(dev); + while (lp->tx_old != lp->tx_new) + cpu_relax(); /* Wait for the ring to empty */ + + STOP_DEPCA; /* Temporarily stop the depca. */ + depca_init_ring(dev); /* Initialize the descriptor rings */ + LoadCSRs(dev); /* Reload CSR3 */ + InitRestartDepca(dev); /* Resume normal operation. */ + netif_start_queue(dev); /* Unlock the TX ring */ + break; + + case DEPCA_SET_PROM: /* Set Promiscuous Mode */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + netif_stop_queue(dev); + while (lp->tx_old != lp->tx_new) + cpu_relax(); /* Wait for the ring to empty */ + + STOP_DEPCA; /* Temporarily stop the depca. */ + depca_init_ring(dev); /* Initialize the descriptor rings */ + lp->init_block.mode |= PROM; /* Set promiscuous mode */ + + LoadCSRs(dev); /* Reload CSR3 */ + InitRestartDepca(dev); /* Resume normal operation. */ + netif_start_queue(dev); /* Unlock the TX ring */ + break; + + case DEPCA_CLR_PROM: /* Clear Promiscuous Mode */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + netif_stop_queue(dev); + while (lp->tx_old != lp->tx_new) + cpu_relax(); /* Wait for the ring to empty */ + + STOP_DEPCA; /* Temporarily stop the depca. */ + depca_init_ring(dev); /* Initialize the descriptor rings */ + lp->init_block.mode &= ~PROM; /* Clear promiscuous mode */ + + LoadCSRs(dev); /* Reload CSR3 */ + InitRestartDepca(dev); /* Resume normal operation. */ + netif_start_queue(dev); /* Unlock the TX ring */ + break; + + case DEPCA_SAY_BOO: /* Say "Boo!" to the kernel log file */ + if(!capable(CAP_NET_ADMIN)) + return -EPERM; + printk("%s: Boo!\n", dev->name); + break; + + case DEPCA_GET_MCA: /* Get the multicast address table */ + ioc->len = (HASH_TABLE_LEN >> 3); + if (copy_to_user(ioc->data, lp->init_block.mcast_table, ioc->len)) + return -EFAULT; + break; + + case DEPCA_SET_MCA: /* Set a multicast address */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (ioc->len >= HASH_TABLE_LEN) + return -EINVAL; + if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN * ioc->len)) + return -EFAULT; + set_multicast_list(dev); + break; + + case DEPCA_CLR_MCA: /* Clear all multicast addresses */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + set_multicast_list(dev); + break; + + case DEPCA_MCA_EN: /* Enable pass all multicast addressing */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + set_multicast_list(dev); + break; + + case DEPCA_GET_STATS: /* Get the driver statistics */ + ioc->len = sizeof(lp->pktStats); + buf = kmalloc(ioc->len, GFP_KERNEL); + if(!buf) + return -ENOMEM; + spin_lock_irqsave(&lp->lock, flags); + memcpy(buf, &lp->pktStats, ioc->len); + spin_unlock_irqrestore(&lp->lock, flags); + if (copy_to_user(ioc->data, buf, ioc->len)) + status = -EFAULT; + kfree(buf); + break; + + case DEPCA_CLR_STATS: /* Zero out the driver statistics */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + spin_lock_irqsave(&lp->lock, flags); + memset(&lp->pktStats, 0, sizeof(lp->pktStats)); + spin_unlock_irqrestore(&lp->lock, flags); + break; + + case DEPCA_GET_REG: /* Get the DEPCA Registers */ + i = 0; + tmp.sval[i++] = inw(DEPCA_NICSR); + outw(CSR0, DEPCA_ADDR); /* status register */ + tmp.sval[i++] = inw(DEPCA_DATA); + memcpy(&tmp.sval[i], &lp->init_block, sizeof(struct depca_init)); + ioc->len = i + sizeof(struct depca_init); + if (copy_to_user(ioc->data, tmp.addr, ioc->len)) + return -EFAULT; + break; + + default: + return -EOPNOTSUPP; + } + + return status; +} + +static int __init depca_module_init (void) +{ + int err = 0; + +#ifdef CONFIG_MCA + err = mca_register_driver(&depca_mca_driver); + if (err) + goto err; +#endif +#ifdef CONFIG_EISA + err = eisa_driver_register(&depca_eisa_driver); + if (err) + goto err_mca; +#endif + err = platform_driver_register(&depca_isa_driver); + if (err) + goto err_eisa; + + depca_platform_probe(); + return 0; + +err_eisa: +#ifdef CONFIG_EISA + eisa_driver_unregister(&depca_eisa_driver); +err_mca: +#endif +#ifdef CONFIG_MCA + mca_unregister_driver(&depca_mca_driver); +err: +#endif + return err; +} + +static void __exit depca_module_exit (void) +{ + int i; +#ifdef CONFIG_MCA + mca_unregister_driver (&depca_mca_driver); +#endif +#ifdef CONFIG_EISA + eisa_driver_unregister (&depca_eisa_driver); +#endif + platform_driver_unregister (&depca_isa_driver); + + for (i = 0; depca_io_ports[i].iobase; i++) { + if (depca_io_ports[i].device) { + depca_io_ports[i].device->dev.platform_data = NULL; + platform_device_unregister (depca_io_ports[i].device); + depca_io_ports[i].device = NULL; + } + } +} + +module_init (depca_module_init); +module_exit (depca_module_exit); diff --git a/drivers/net/ethernet/amd/depca.h b/drivers/net/ethernet/amd/depca.h new file mode 100644 index 000000000000..ee42648dbde6 --- /dev/null +++ b/drivers/net/ethernet/amd/depca.h @@ -0,0 +1,185 @@ +/* + Written 1994 by David C. Davies. + + Copyright 1994 David C. Davies. This software may be used and distributed + according to the terms of the GNU General Public License, incorporated herein by + reference. +*/ + +/* +** I/O addresses. Note that the 2k buffer option is not supported in +** this driver. +*/ +#define DEPCA_NICSR ioaddr+0x00 /* Network interface CSR */ +#define DEPCA_RBI ioaddr+0x02 /* RAM buffer index (2k buffer mode) */ +#define DEPCA_DATA ioaddr+0x04 /* LANCE registers' data port */ +#define DEPCA_ADDR ioaddr+0x06 /* LANCE registers' address port */ +#define DEPCA_HBASE ioaddr+0x08 /* EISA high memory base address reg. */ +#define DEPCA_PROM ioaddr+0x0c /* Ethernet address ROM data port */ +#define DEPCA_CNFG ioaddr+0x0c /* EISA Configuration port */ +#define DEPCA_RBSA ioaddr+0x0e /* RAM buffer starting address (2k buff.) */ + +/* +** These are LANCE registers addressable through DEPCA_ADDR +*/ +#define CSR0 0 +#define CSR1 1 +#define CSR2 2 +#define CSR3 3 + +/* +** NETWORK INTERFACE CSR (NI_CSR) bit definitions +*/ + +#define TO 0x0100 /* Time Out for remote boot */ +#define SHE 0x0080 /* SHadow memory Enable */ +#define BS 0x0040 /* Bank Select */ +#define BUF 0x0020 /* BUFfer size (1->32k, 0->64k) */ +#define RBE 0x0010 /* Remote Boot Enable (1->net boot) */ +#define AAC 0x0008 /* Address ROM Address Counter (1->enable) */ +#define _128KB 0x0008 /* 128kB Network RAM (1->enable) */ +#define IM 0x0004 /* Interrupt Mask (1->mask) */ +#define IEN 0x0002 /* Interrupt tristate ENable (1->enable) */ +#define LED 0x0001 /* LED control */ + +/* +** Control and Status Register 0 (CSR0) bit definitions +*/ + +#define ERR 0x8000 /* Error summary */ +#define BABL 0x4000 /* Babble transmitter timeout error */ +#define CERR 0x2000 /* Collision Error */ +#define MISS 0x1000 /* Missed packet */ +#define MERR 0x0800 /* Memory Error */ +#define RINT 0x0400 /* Receiver Interrupt */ +#define TINT 0x0200 /* Transmit Interrupt */ +#define IDON 0x0100 /* Initialization Done */ +#define INTR 0x0080 /* Interrupt Flag */ +#define INEA 0x0040 /* Interrupt Enable */ +#define RXON 0x0020 /* Receiver on */ +#define TXON 0x0010 /* Transmitter on */ +#define TDMD 0x0008 /* Transmit Demand */ +#define STOP 0x0004 /* Stop */ +#define STRT 0x0002 /* Start */ +#define INIT 0x0001 /* Initialize */ +#define INTM 0xff00 /* Interrupt Mask */ +#define INTE 0xfff0 /* Interrupt Enable */ + +/* +** CONTROL AND STATUS REGISTER 3 (CSR3) +*/ + +#define BSWP 0x0004 /* Byte SWaP */ +#define ACON 0x0002 /* ALE control */ +#define BCON 0x0001 /* Byte CONtrol */ + +/* +** Initialization Block Mode Register +*/ + +#define PROM 0x8000 /* Promiscuous Mode */ +#define EMBA 0x0080 /* Enable Modified Back-off Algorithm */ +#define INTL 0x0040 /* Internal Loopback */ +#define DRTY 0x0020 /* Disable Retry */ +#define COLL 0x0010 /* Force Collision */ +#define DTCR 0x0008 /* Disable Transmit CRC */ +#define LOOP 0x0004 /* Loopback */ +#define DTX 0x0002 /* Disable the Transmitter */ +#define DRX 0x0001 /* Disable the Receiver */ + +/* +** Receive Message Descriptor 1 (RMD1) bit definitions. +*/ + +#define R_OWN 0x80000000 /* Owner bit 0 = host, 1 = lance */ +#define R_ERR 0x4000 /* Error Summary */ +#define R_FRAM 0x2000 /* Framing Error */ +#define R_OFLO 0x1000 /* Overflow Error */ +#define R_CRC 0x0800 /* CRC Error */ +#define R_BUFF 0x0400 /* Buffer Error */ +#define R_STP 0x0200 /* Start of Packet */ +#define R_ENP 0x0100 /* End of Packet */ + +/* +** Transmit Message Descriptor 1 (TMD1) bit definitions. +*/ + +#define T_OWN 0x80000000 /* Owner bit 0 = host, 1 = lance */ +#define T_ERR 0x4000 /* Error Summary */ +#define T_ADD_FCS 0x2000 /* More the 1 retry needed to Xmit */ +#define T_MORE 0x1000 /* >1 retry to transmit packet */ +#define T_ONE 0x0800 /* 1 try needed to transmit the packet */ +#define T_DEF 0x0400 /* Deferred */ +#define T_STP 0x02000000 /* Start of Packet */ +#define T_ENP 0x01000000 /* End of Packet */ +#define T_FLAGS 0xff000000 /* TX Flags Field */ + +/* +** Transmit Message Descriptor 3 (TMD3) bit definitions. +*/ + +#define TMD3_BUFF 0x8000 /* BUFFer error */ +#define TMD3_UFLO 0x4000 /* UnderFLOw error */ +#define TMD3_RES 0x2000 /* REServed */ +#define TMD3_LCOL 0x1000 /* Late COLlision */ +#define TMD3_LCAR 0x0800 /* Loss of CARrier */ +#define TMD3_RTRY 0x0400 /* ReTRY error */ + +/* +** EISA configuration Register (CNFG) bit definitions +*/ + +#define TIMEOUT 0x0100 /* 0:2.5 mins, 1: 30 secs */ +#define REMOTE 0x0080 /* Remote Boot Enable -> 1 */ +#define IRQ11 0x0040 /* Enable -> 1 */ +#define IRQ10 0x0020 /* Enable -> 1 */ +#define IRQ9 0x0010 /* Enable -> 1 */ +#define IRQ5 0x0008 /* Enable -> 1 */ +#define BUFF 0x0004 /* 0: 64kB or 128kB, 1: 32kB */ +#define PADR16 0x0002 /* RAM on 64kB boundary */ +#define PADR17 0x0001 /* RAM on 128kB boundary */ + +/* +** Miscellaneous +*/ +#define HASH_TABLE_LEN 64 /* Bits */ +#define HASH_BITS 0x003f /* 6 LS bits */ + +#define MASK_INTERRUPTS 1 +#define UNMASK_INTERRUPTS 0 + +#define EISA_EN 0x0001 /* Enable EISA bus buffers */ +#define EISA_ID iobase+0x0080 /* ID long word for EISA card */ +#define EISA_CTRL iobase+0x0084 /* Control word for EISA card */ + +/* +** Include the IOCTL stuff +*/ +#include <linux/sockios.h> + +#define DEPCAIOCTL SIOCDEVPRIVATE + +struct depca_ioctl { + unsigned short cmd; /* Command to run */ + unsigned short len; /* Length of the data buffer */ + unsigned char __user *data; /* Pointer to the data buffer */ +}; + +/* +** Recognised commands for the driver +*/ +#define DEPCA_GET_HWADDR 0x01 /* Get the hardware address */ +#define DEPCA_SET_HWADDR 0x02 /* Get the hardware address */ +#define DEPCA_SET_PROM 0x03 /* Set Promiscuous Mode */ +#define DEPCA_CLR_PROM 0x04 /* Clear Promiscuous Mode */ +#define DEPCA_SAY_BOO 0x05 /* Say "Boo!" to the kernel log file */ +#define DEPCA_GET_MCA 0x06 /* Get a multicast address */ +#define DEPCA_SET_MCA 0x07 /* Set a multicast address */ +#define DEPCA_CLR_MCA 0x08 /* Clear a multicast address */ +#define DEPCA_MCA_EN 0x09 /* Enable a multicast address group */ +#define DEPCA_GET_STATS 0x0a /* Get the driver statistics */ +#define DEPCA_CLR_STATS 0x0b /* Zero out the driver statistics */ +#define DEPCA_GET_REG 0x0c /* Get the Register contents */ +#define DEPCA_SET_REG 0x0d /* Set the Register contents */ +#define DEPCA_DUMP 0x0f /* Dump the DEPCA Status */ + diff --git a/drivers/net/ethernet/amd/hplance.c b/drivers/net/ethernet/amd/hplance.c new file mode 100644 index 000000000000..86aa0d546a5b --- /dev/null +++ b/drivers/net/ethernet/amd/hplance.c @@ -0,0 +1,242 @@ +/* hplance.c : the Linux/hp300/lance ethernet driver + * + * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk> + * Based on the Sun Lance driver and the NetBSD HP Lance driver + * Uses the generic 7990.c LANCE code. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/string.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/errno.h> +/* Used for the temporal inet entries and routing */ +#include <linux/socket.h> +#include <linux/route.h> +#include <linux/dio.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/pgtable.h> + +#include "hplance.h" + +/* We have 16834 bytes of RAM for the init block and buffers. This places + * an upper limit on the number of buffers we can use. NetBSD uses 8 Rx + * buffers and 2 Tx buffers. + */ +#define LANCE_LOG_TX_BUFFERS 1 +#define LANCE_LOG_RX_BUFFERS 3 + +#include "7990.h" /* use generic LANCE code */ + +/* Our private data structure */ +struct hplance_private { + struct lance_private lance; +}; + +/* function prototypes... This is easy because all the grot is in the + * generic LANCE support. All we have to support is probing for boards, + * plus board-specific init, open and close actions. + * Oh, and we need to tell the generic code how to read and write LANCE registers... + */ +static int __devinit hplance_init_one(struct dio_dev *d, + const struct dio_device_id *ent); +static void __devinit hplance_init(struct net_device *dev, + struct dio_dev *d); +static void __devexit hplance_remove_one(struct dio_dev *d); +static void hplance_writerap(void *priv, unsigned short value); +static void hplance_writerdp(void *priv, unsigned short value); +static unsigned short hplance_readrdp(void *priv); +static int hplance_open(struct net_device *dev); +static int hplance_close(struct net_device *dev); + +static struct dio_device_id hplance_dio_tbl[] = { + { DIO_ID_LAN }, + { 0 } +}; + +static struct dio_driver hplance_driver = { + .name = "hplance", + .id_table = hplance_dio_tbl, + .probe = hplance_init_one, + .remove = __devexit_p(hplance_remove_one), +}; + +static const struct net_device_ops hplance_netdev_ops = { + .ndo_open = hplance_open, + .ndo_stop = hplance_close, + .ndo_start_xmit = lance_start_xmit, + .ndo_set_rx_mode = lance_set_multicast, + .ndo_change_mtu = eth_change_mtu, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = eth_mac_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = lance_poll, +#endif +}; + +/* Find all the HP Lance boards and initialise them... */ +static int __devinit hplance_init_one(struct dio_dev *d, + const struct dio_device_id *ent) +{ + struct net_device *dev; + int err = -ENOMEM; + int i; + + dev = alloc_etherdev(sizeof(struct hplance_private)); + if (!dev) + goto out; + + err = -EBUSY; + if (!request_mem_region(dio_resource_start(d), + dio_resource_len(d), d->name)) + goto out_free_netdev; + + hplance_init(dev, d); + err = register_netdev(dev); + if (err) + goto out_release_mem_region; + + dio_set_drvdata(d, dev); + + printk(KERN_INFO "%s: %s; select code %d, addr %2.2x", dev->name, d->name, d->scode, dev->dev_addr[0]); + + for (i=1; i<6; i++) { + printk(":%2.2x", dev->dev_addr[i]); + } + + printk(", irq %d\n", d->ipl); + + return 0; + + out_release_mem_region: + release_mem_region(dio_resource_start(d), dio_resource_len(d)); + out_free_netdev: + free_netdev(dev); + out: + return err; +} + +static void __devexit hplance_remove_one(struct dio_dev *d) +{ + struct net_device *dev = dio_get_drvdata(d); + + unregister_netdev(dev); + release_mem_region(dio_resource_start(d), dio_resource_len(d)); + free_netdev(dev); +} + +/* Initialise a single lance board at the given DIO device */ +static void __devinit hplance_init(struct net_device *dev, struct dio_dev *d) +{ + unsigned long va = (d->resource.start + DIO_VIRADDRBASE); + struct hplance_private *lp; + int i; + + /* reset the board */ + out_8(va+DIO_IDOFF, 0xff); + udelay(100); /* ariba! ariba! udelay! udelay! */ + + /* Fill the dev fields */ + dev->base_addr = va; + dev->netdev_ops = &hplance_netdev_ops; + dev->dma = 0; + + for (i=0; i<6; i++) { + /* The NVRAM holds our ethernet address, one nibble per byte, + * at bytes NVRAMOFF+1,3,5,7,9... + */ + dev->dev_addr[i] = ((in_8(va + HPLANCE_NVRAMOFF + i*4 + 1) & 0xF) << 4) + | (in_8(va + HPLANCE_NVRAMOFF + i*4 + 3) & 0xF); + } + + lp = netdev_priv(dev); + lp->lance.name = (char*)d->name; /* discards const, shut up gcc */ + lp->lance.base = va; + lp->lance.init_block = (struct lance_init_block *)(va + HPLANCE_MEMOFF); /* CPU addr */ + lp->lance.lance_init_block = NULL; /* LANCE addr of same RAM */ + lp->lance.busmaster_regval = LE_C3_BSWP; /* we're bigendian */ + lp->lance.irq = d->ipl; + lp->lance.writerap = hplance_writerap; + lp->lance.writerdp = hplance_writerdp; + lp->lance.readrdp = hplance_readrdp; + lp->lance.lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS; + lp->lance.lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS; + lp->lance.rx_ring_mod_mask = RX_RING_MOD_MASK; + lp->lance.tx_ring_mod_mask = TX_RING_MOD_MASK; +} + +/* This is disgusting. We have to check the DIO status register for ack every + * time we read or write the LANCE registers. + */ +static void hplance_writerap(void *priv, unsigned short value) +{ + struct lance_private *lp = (struct lance_private *)priv; + do { + out_be16(lp->base + HPLANCE_REGOFF + LANCE_RAP, value); + } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); +} + +static void hplance_writerdp(void *priv, unsigned short value) +{ + struct lance_private *lp = (struct lance_private *)priv; + do { + out_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP, value); + } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); +} + +static unsigned short hplance_readrdp(void *priv) +{ + struct lance_private *lp = (struct lance_private *)priv; + __u16 value; + do { + value = in_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP); + } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0); + return value; +} + +static int hplance_open(struct net_device *dev) +{ + int status; + struct lance_private *lp = netdev_priv(dev); + + status = lance_open(dev); /* call generic lance open code */ + if (status) + return status; + /* enable interrupts at board level. */ + out_8(lp->base + HPLANCE_STATUS, LE_IE); + + return 0; +} + +static int hplance_close(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + + out_8(lp->base + HPLANCE_STATUS, 0); /* disable interrupts at boardlevel */ + lance_close(dev); + return 0; +} + +static int __init hplance_init_module(void) +{ + return dio_register_driver(&hplance_driver); +} + +static void __exit hplance_cleanup_module(void) +{ + dio_unregister_driver(&hplance_driver); +} + +module_init(hplance_init_module); +module_exit(hplance_cleanup_module); + +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ethernet/amd/hplance.h b/drivers/net/ethernet/amd/hplance.h new file mode 100644 index 000000000000..04aee9e0376a --- /dev/null +++ b/drivers/net/ethernet/amd/hplance.h @@ -0,0 +1,26 @@ +/* Random defines and structures for the HP Lance driver. + * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk> + * Based on the Sun Lance driver and the NetBSD HP Lance driver + */ + +/* Registers */ +#define HPLANCE_ID 0x01 /* DIO register: ID byte */ +#define HPLANCE_STATUS 0x03 /* DIO register: interrupt enable/status */ + +/* Control and status bits for the status register */ +#define LE_IE 0x80 /* interrupt enable */ +#define LE_IR 0x40 /* interrupt requested */ +#define LE_LOCK 0x08 /* lock status register */ +#define LE_ACK 0x04 /* ack of lock */ +#define LE_JAB 0x02 /* loss of tx clock (???) */ +/* We can also extract the IPL from the status register with the standard + * DIO_IPL(hplance) macro, or using dio_scodetoipl() + */ + +/* These are the offsets for the DIO regs (hplance_reg), lance_ioreg, + * memory and NVRAM: + */ +#define HPLANCE_IDOFF 0 /* board baseaddr */ +#define HPLANCE_REGOFF 0x4000 /* lance registers */ +#define HPLANCE_MEMOFF 0x8000 /* struct lance_init_block */ +#define HPLANCE_NVRAMOFF 0xC008 /* etheraddress as one *nibble* per byte */ diff --git a/drivers/net/ethernet/amd/lance.c b/drivers/net/ethernet/amd/lance.c new file mode 100644 index 000000000000..a6e2e840884e --- /dev/null +++ b/drivers/net/ethernet/amd/lance.c @@ -0,0 +1,1313 @@ +/* lance.c: An AMD LANCE/PCnet ethernet driver for Linux. */ +/* + Written/copyright 1993-1998 by Donald Becker. + + Copyright 1993 United States Government as represented by the + Director, National Security Agency. + This software may be used and distributed according to the terms + of the GNU General Public License, incorporated herein by reference. + + This driver is for the Allied Telesis AT1500 and HP J2405A, and should work + with most other LANCE-based bus-master (NE2100/NE2500) ethercards. + + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 410 Severn Ave., Suite 210 + Annapolis MD 21403 + + Andrey V. Savochkin: + - alignment problem with 1.3.* kernel and some minor changes. + Thomas Bogendoerfer (tsbogend@bigbug.franken.de): + - added support for Linux/Alpha, but removed most of it, because + it worked only for the PCI chip. + - added hook for the 32bit lance driver + - added PCnetPCI II (79C970A) to chip table + Paul Gortmaker (gpg109@rsphy1.anu.edu.au): + - hopefully fix above so Linux/Alpha can use ISA cards too. + 8/20/96 Fixed 7990 autoIRQ failure and reversed unneeded alignment -djb + v1.12 10/27/97 Module support -djb + v1.14 2/3/98 Module support modified, made PCI support optional -djb + v1.15 5/27/99 Fixed bug in the cleanup_module(). dev->priv was freed + before unregister_netdev() which caused NULL pointer + reference later in the chain (in rtnetlink_fill_ifinfo()) + -- Mika Kuoppala <miku@iki.fi> + + Forward ported v1.14 to 2.1.129, merged the PCI and misc changes from + the 2.1 version of the old driver - Alan Cox + + Get rid of check_region, check kmalloc return in lance_probe1 + Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 11/01/2001 + + Reworked detection, added support for Racal InterLan EtherBlaster cards + Vesselin Kostadinov <vesok at yahoo dot com > - 22/4/2004 +*/ + +static const char version[] = "lance.c:v1.16 2006/11/09 dplatt@3do.com, becker@cesdis.gsfc.nasa.gov\n"; + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/mm.h> +#include <linux/bitops.h> + +#include <asm/io.h> +#include <asm/dma.h> + +static unsigned int lance_portlist[] __initdata = { 0x300, 0x320, 0x340, 0x360, 0}; +static int lance_probe1(struct net_device *dev, int ioaddr, int irq, int options); +static int __init do_lance_probe(struct net_device *dev); + + +static struct card { + char id_offset14; + char id_offset15; +} cards[] = { + { //"normal" + .id_offset14 = 0x57, + .id_offset15 = 0x57, + }, + { //NI6510EB + .id_offset14 = 0x52, + .id_offset15 = 0x44, + }, + { //Racal InterLan EtherBlaster + .id_offset14 = 0x52, + .id_offset15 = 0x49, + }, +}; +#define NUM_CARDS 3 + +#ifdef LANCE_DEBUG +static int lance_debug = LANCE_DEBUG; +#else +static int lance_debug = 1; +#endif + +/* + Theory of Operation + +I. Board Compatibility + +This device driver is designed for the AMD 79C960, the "PCnet-ISA +single-chip ethernet controller for ISA". This chip is used in a wide +variety of boards from vendors such as Allied Telesis, HP, Kingston, +and Boca. This driver is also intended to work with older AMD 7990 +designs, such as the NE1500 and NE2100, and newer 79C961. For convenience, +I use the name LANCE to refer to all of the AMD chips, even though it properly +refers only to the original 7990. + +II. Board-specific settings + +The driver is designed to work the boards that use the faster +bus-master mode, rather than in shared memory mode. (Only older designs +have on-board buffer memory needed to support the slower shared memory mode.) + +Most ISA boards have jumpered settings for the I/O base, IRQ line, and DMA +channel. This driver probes the likely base addresses: +{0x300, 0x320, 0x340, 0x360}. +After the board is found it generates a DMA-timeout interrupt and uses +autoIRQ to find the IRQ line. The DMA channel can be set with the low bits +of the otherwise-unused dev->mem_start value (aka PARAM1). If unset it is +probed for by enabling each free DMA channel in turn and checking if +initialization succeeds. + +The HP-J2405A board is an exception: with this board it is easy to read the +EEPROM-set values for the base, IRQ, and DMA. (Of course you must already +_know_ the base address -- that field is for writing the EEPROM.) + +III. Driver operation + +IIIa. Ring buffers +The LANCE uses ring buffers of Tx and Rx descriptors. Each entry describes +the base and length of the data buffer, along with status bits. The length +of these buffers is set by LANCE_LOG_{RX,TX}_BUFFERS, which is log_2() of +the buffer length (rather than being directly the buffer length) for +implementation ease. The current values are 2 (Tx) and 4 (Rx), which leads to +ring sizes of 4 (Tx) and 16 (Rx). Increasing the number of ring entries +needlessly uses extra space and reduces the chance that an upper layer will +be able to reorder queued Tx packets based on priority. Decreasing the number +of entries makes it more difficult to achieve back-to-back packet transmission +and increases the chance that Rx ring will overflow. (Consider the worst case +of receiving back-to-back minimum-sized packets.) + +The LANCE has the capability to "chain" both Rx and Tx buffers, but this driver +statically allocates full-sized (slightly oversized -- PKT_BUF_SZ) buffers to +avoid the administrative overhead. For the Rx side this avoids dynamically +allocating full-sized buffers "just in case", at the expense of a +memory-to-memory data copy for each packet received. For most systems this +is a good tradeoff: the Rx buffer will always be in low memory, the copy +is inexpensive, and it primes the cache for later packet processing. For Tx +the buffers are only used when needed as low-memory bounce buffers. + +IIIB. 16M memory limitations. +For the ISA bus master mode all structures used directly by the LANCE, +the initialization block, Rx and Tx rings, and data buffers, must be +accessible from the ISA bus, i.e. in the lower 16M of real memory. +This is a problem for current Linux kernels on >16M machines. The network +devices are initialized after memory initialization, and the kernel doles out +memory from the top of memory downward. The current solution is to have a +special network initialization routine that's called before memory +initialization; this will eventually be generalized for all network devices. +As mentioned before, low-memory "bounce-buffers" are used when needed. + +IIIC. Synchronization +The driver runs as two independent, single-threaded flows of control. One +is the send-packet routine, which enforces single-threaded use by the +dev->tbusy flag. The other thread is the interrupt handler, which is single +threaded by the hardware and other software. + +The send packet thread has partial control over the Tx ring and 'dev->tbusy' +flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next +queue slot is empty, it clears the tbusy flag when finished otherwise it sets +the 'lp->tx_full' flag. + +The interrupt handler has exclusive control over the Rx ring and records stats +from the Tx ring. (The Tx-done interrupt can't be selectively turned off, so +we can't avoid the interrupt overhead by having the Tx routine reap the Tx +stats.) After reaping the stats, it marks the queue entry as empty by setting +the 'base' to zero. Iff the 'lp->tx_full' flag is set, it clears both the +tx_full and tbusy flags. + +*/ + +/* Set the number of Tx and Rx buffers, using Log_2(# buffers). + Reasonable default values are 16 Tx buffers, and 16 Rx buffers. + That translates to 4 and 4 (16 == 2^^4). + This is a compile-time option for efficiency. + */ +#ifndef LANCE_LOG_TX_BUFFERS +#define LANCE_LOG_TX_BUFFERS 4 +#define LANCE_LOG_RX_BUFFERS 4 +#endif + +#define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS)) +#define TX_RING_MOD_MASK (TX_RING_SIZE - 1) +#define TX_RING_LEN_BITS ((LANCE_LOG_TX_BUFFERS) << 29) + +#define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS)) +#define RX_RING_MOD_MASK (RX_RING_SIZE - 1) +#define RX_RING_LEN_BITS ((LANCE_LOG_RX_BUFFERS) << 29) + +#define PKT_BUF_SZ 1544 + +/* Offsets from base I/O address. */ +#define LANCE_DATA 0x10 +#define LANCE_ADDR 0x12 +#define LANCE_RESET 0x14 +#define LANCE_BUS_IF 0x16 +#define LANCE_TOTAL_SIZE 0x18 + +#define TX_TIMEOUT (HZ/5) + +/* The LANCE Rx and Tx ring descriptors. */ +struct lance_rx_head { + s32 base; + s16 buf_length; /* This length is 2s complement (negative)! */ + s16 msg_length; /* This length is "normal". */ +}; + +struct lance_tx_head { + s32 base; + s16 length; /* Length is 2s complement (negative)! */ + s16 misc; +}; + +/* The LANCE initialization block, described in databook. */ +struct lance_init_block { + u16 mode; /* Pre-set mode (reg. 15) */ + u8 phys_addr[6]; /* Physical ethernet address */ + u32 filter[2]; /* Multicast filter (unused). */ + /* Receive and transmit ring base, along with extra bits. */ + u32 rx_ring; /* Tx and Rx ring base pointers */ + u32 tx_ring; +}; + +struct lance_private { + /* The Tx and Rx ring entries must be aligned on 8-byte boundaries. */ + struct lance_rx_head rx_ring[RX_RING_SIZE]; + struct lance_tx_head tx_ring[TX_RING_SIZE]; + struct lance_init_block init_block; + const char *name; + /* The saved address of a sent-in-place packet/buffer, for skfree(). */ + struct sk_buff* tx_skbuff[TX_RING_SIZE]; + /* The addresses of receive-in-place skbuffs. */ + struct sk_buff* rx_skbuff[RX_RING_SIZE]; + unsigned long rx_buffs; /* Address of Rx and Tx buffers. */ + /* Tx low-memory "bounce buffer" address. */ + char (*tx_bounce_buffs)[PKT_BUF_SZ]; + int cur_rx, cur_tx; /* The next free ring entry */ + int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */ + int dma; + unsigned char chip_version; /* See lance_chip_type. */ + spinlock_t devlock; +}; + +#define LANCE_MUST_PAD 0x00000001 +#define LANCE_ENABLE_AUTOSELECT 0x00000002 +#define LANCE_MUST_REINIT_RING 0x00000004 +#define LANCE_MUST_UNRESET 0x00000008 +#define LANCE_HAS_MISSED_FRAME 0x00000010 + +/* A mapping from the chip ID number to the part number and features. + These are from the datasheets -- in real life the '970 version + reportedly has the same ID as the '965. */ +static struct lance_chip_type { + int id_number; + const char *name; + int flags; +} chip_table[] = { + {0x0000, "LANCE 7990", /* Ancient lance chip. */ + LANCE_MUST_PAD + LANCE_MUST_UNRESET}, + {0x0003, "PCnet/ISA 79C960", /* 79C960 PCnet/ISA. */ + LANCE_ENABLE_AUTOSELECT + LANCE_MUST_REINIT_RING + + LANCE_HAS_MISSED_FRAME}, + {0x2260, "PCnet/ISA+ 79C961", /* 79C961 PCnet/ISA+, Plug-n-Play. */ + LANCE_ENABLE_AUTOSELECT + LANCE_MUST_REINIT_RING + + LANCE_HAS_MISSED_FRAME}, + {0x2420, "PCnet/PCI 79C970", /* 79C970 or 79C974 PCnet-SCSI, PCI. */ + LANCE_ENABLE_AUTOSELECT + LANCE_MUST_REINIT_RING + + LANCE_HAS_MISSED_FRAME}, + /* Bug: the PCnet/PCI actually uses the PCnet/VLB ID number, so just call + it the PCnet32. */ + {0x2430, "PCnet32", /* 79C965 PCnet for VL bus. */ + LANCE_ENABLE_AUTOSELECT + LANCE_MUST_REINIT_RING + + LANCE_HAS_MISSED_FRAME}, + {0x2621, "PCnet/PCI-II 79C970A", /* 79C970A PCInetPCI II. */ + LANCE_ENABLE_AUTOSELECT + LANCE_MUST_REINIT_RING + + LANCE_HAS_MISSED_FRAME}, + {0x0, "PCnet (unknown)", + LANCE_ENABLE_AUTOSELECT + LANCE_MUST_REINIT_RING + + LANCE_HAS_MISSED_FRAME}, +}; + +enum {OLD_LANCE = 0, PCNET_ISA=1, PCNET_ISAP=2, PCNET_PCI=3, PCNET_VLB=4, PCNET_PCI_II=5, LANCE_UNKNOWN=6}; + + +/* Non-zero if lance_probe1() needs to allocate low-memory bounce buffers. + Assume yes until we know the memory size. */ +static unsigned char lance_need_isa_bounce_buffers = 1; + +static int lance_open(struct net_device *dev); +static void lance_init_ring(struct net_device *dev, gfp_t mode); +static netdev_tx_t lance_start_xmit(struct sk_buff *skb, + struct net_device *dev); +static int lance_rx(struct net_device *dev); +static irqreturn_t lance_interrupt(int irq, void *dev_id); +static int lance_close(struct net_device *dev); +static struct net_device_stats *lance_get_stats(struct net_device *dev); +static void set_multicast_list(struct net_device *dev); +static void lance_tx_timeout (struct net_device *dev); + + + +#ifdef MODULE +#define MAX_CARDS 8 /* Max number of interfaces (cards) per module */ + +static struct net_device *dev_lance[MAX_CARDS]; +static int io[MAX_CARDS]; +static int dma[MAX_CARDS]; +static int irq[MAX_CARDS]; + +module_param_array(io, int, NULL, 0); +module_param_array(dma, int, NULL, 0); +module_param_array(irq, int, NULL, 0); +module_param(lance_debug, int, 0); +MODULE_PARM_DESC(io, "LANCE/PCnet I/O base address(es),required"); +MODULE_PARM_DESC(dma, "LANCE/PCnet ISA DMA channel (ignored for some devices)"); +MODULE_PARM_DESC(irq, "LANCE/PCnet IRQ number (ignored for some devices)"); +MODULE_PARM_DESC(lance_debug, "LANCE/PCnet debug level (0-7)"); + +int __init init_module(void) +{ + struct net_device *dev; + int this_dev, found = 0; + + for (this_dev = 0; this_dev < MAX_CARDS; this_dev++) { + if (io[this_dev] == 0) { + if (this_dev != 0) /* only complain once */ + break; + printk(KERN_NOTICE "lance.c: Module autoprobing not allowed. Append \"io=0xNNN\" value(s).\n"); + return -EPERM; + } + dev = alloc_etherdev(0); + if (!dev) + break; + dev->irq = irq[this_dev]; + dev->base_addr = io[this_dev]; + dev->dma = dma[this_dev]; + if (do_lance_probe(dev) == 0) { + dev_lance[found++] = dev; + continue; + } + free_netdev(dev); + break; + } + if (found != 0) + return 0; + return -ENXIO; +} + +static void cleanup_card(struct net_device *dev) +{ + struct lance_private *lp = dev->ml_priv; + if (dev->dma != 4) + free_dma(dev->dma); + release_region(dev->base_addr, LANCE_TOTAL_SIZE); + kfree(lp->tx_bounce_buffs); + kfree((void*)lp->rx_buffs); + kfree(lp); +} + +void __exit cleanup_module(void) +{ + int this_dev; + + for (this_dev = 0; this_dev < MAX_CARDS; this_dev++) { + struct net_device *dev = dev_lance[this_dev]; + if (dev) { + unregister_netdev(dev); + cleanup_card(dev); + free_netdev(dev); + } + } +} +#endif /* MODULE */ +MODULE_LICENSE("GPL"); + + +/* Starting in v2.1.*, the LANCE/PCnet probe is now similar to the other + board probes now that kmalloc() can allocate ISA DMA-able regions. + This also allows the LANCE driver to be used as a module. + */ +static int __init do_lance_probe(struct net_device *dev) +{ + unsigned int *port; + int result; + + if (high_memory <= phys_to_virt(16*1024*1024)) + lance_need_isa_bounce_buffers = 0; + + for (port = lance_portlist; *port; port++) { + int ioaddr = *port; + struct resource *r = request_region(ioaddr, LANCE_TOTAL_SIZE, + "lance-probe"); + + if (r) { + /* Detect the card with minimal I/O reads */ + char offset14 = inb(ioaddr + 14); + int card; + for (card = 0; card < NUM_CARDS; ++card) + if (cards[card].id_offset14 == offset14) + break; + if (card < NUM_CARDS) {/*yes, the first byte matches*/ + char offset15 = inb(ioaddr + 15); + for (card = 0; card < NUM_CARDS; ++card) + if ((cards[card].id_offset14 == offset14) && + (cards[card].id_offset15 == offset15)) + break; + } + if (card < NUM_CARDS) { /*Signature OK*/ + result = lance_probe1(dev, ioaddr, 0, 0); + if (!result) { + struct lance_private *lp = dev->ml_priv; + int ver = lp->chip_version; + + r->name = chip_table[ver].name; + return 0; + } + } + release_region(ioaddr, LANCE_TOTAL_SIZE); + } + } + return -ENODEV; +} + +#ifndef MODULE +struct net_device * __init lance_probe(int unit) +{ + struct net_device *dev = alloc_etherdev(0); + int err; + + if (!dev) + return ERR_PTR(-ENODEV); + + sprintf(dev->name, "eth%d", unit); + netdev_boot_setup_check(dev); + + err = do_lance_probe(dev); + if (err) + goto out; + return dev; +out: + free_netdev(dev); + return ERR_PTR(err); +} +#endif + +static const struct net_device_ops lance_netdev_ops = { + .ndo_open = lance_open, + .ndo_start_xmit = lance_start_xmit, + .ndo_stop = lance_close, + .ndo_get_stats = lance_get_stats, + .ndo_set_rx_mode = set_multicast_list, + .ndo_tx_timeout = lance_tx_timeout, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, +}; + +static int __init lance_probe1(struct net_device *dev, int ioaddr, int irq, int options) +{ + struct lance_private *lp; + unsigned long dma_channels; /* Mark spuriously-busy DMA channels */ + int i, reset_val, lance_version; + const char *chipname; + /* Flags for specific chips or boards. */ + unsigned char hpJ2405A = 0; /* HP ISA adaptor */ + int hp_builtin = 0; /* HP on-board ethernet. */ + static int did_version; /* Already printed version info. */ + unsigned long flags; + int err = -ENOMEM; + void __iomem *bios; + + /* First we look for special cases. + Check for HP's on-board ethernet by looking for 'HP' in the BIOS. + There are two HP versions, check the BIOS for the configuration port. + This method provided by L. Julliard, Laurent_Julliard@grenoble.hp.com. + */ + bios = ioremap(0xf00f0, 0x14); + if (!bios) + return -ENOMEM; + if (readw(bios + 0x12) == 0x5048) { + static const short ioaddr_table[] = { 0x300, 0x320, 0x340, 0x360}; + int hp_port = (readl(bios + 1) & 1) ? 0x499 : 0x99; + /* We can have boards other than the built-in! Verify this is on-board. */ + if ((inb(hp_port) & 0xc0) == 0x80 && + ioaddr_table[inb(hp_port) & 3] == ioaddr) + hp_builtin = hp_port; + } + iounmap(bios); + /* We also recognize the HP Vectra on-board here, but check below. */ + hpJ2405A = (inb(ioaddr) == 0x08 && inb(ioaddr+1) == 0x00 && + inb(ioaddr+2) == 0x09); + + /* Reset the LANCE. */ + reset_val = inw(ioaddr+LANCE_RESET); /* Reset the LANCE */ + + /* The Un-Reset needed is only needed for the real NE2100, and will + confuse the HP board. */ + if (!hpJ2405A) + outw(reset_val, ioaddr+LANCE_RESET); + + outw(0x0000, ioaddr+LANCE_ADDR); /* Switch to window 0 */ + if (inw(ioaddr+LANCE_DATA) != 0x0004) + return -ENODEV; + + /* Get the version of the chip. */ + outw(88, ioaddr+LANCE_ADDR); + if (inw(ioaddr+LANCE_ADDR) != 88) { + lance_version = 0; + } else { /* Good, it's a newer chip. */ + int chip_version = inw(ioaddr+LANCE_DATA); + outw(89, ioaddr+LANCE_ADDR); + chip_version |= inw(ioaddr+LANCE_DATA) << 16; + if (lance_debug > 2) + printk(" LANCE chip version is %#x.\n", chip_version); + if ((chip_version & 0xfff) != 0x003) + return -ENODEV; + chip_version = (chip_version >> 12) & 0xffff; + for (lance_version = 1; chip_table[lance_version].id_number; lance_version++) { + if (chip_table[lance_version].id_number == chip_version) + break; + } + } + + /* We can't allocate private data from alloc_etherdev() because it must + a ISA DMA-able region. */ + chipname = chip_table[lance_version].name; + printk("%s: %s at %#3x, ", dev->name, chipname, ioaddr); + + /* There is a 16 byte station address PROM at the base address. + The first six bytes are the station address. */ + for (i = 0; i < 6; i++) + dev->dev_addr[i] = inb(ioaddr + i); + printk("%pM", dev->dev_addr); + + dev->base_addr = ioaddr; + /* Make certain the data structures used by the LANCE are aligned and DMAble. */ + + lp = kzalloc(sizeof(*lp), GFP_DMA | GFP_KERNEL); + if(lp==NULL) + return -ENODEV; + if (lance_debug > 6) printk(" (#0x%05lx)", (unsigned long)lp); + dev->ml_priv = lp; + lp->name = chipname; + lp->rx_buffs = (unsigned long)kmalloc(PKT_BUF_SZ*RX_RING_SIZE, + GFP_DMA | GFP_KERNEL); + if (!lp->rx_buffs) + goto out_lp; + if (lance_need_isa_bounce_buffers) { + lp->tx_bounce_buffs = kmalloc(PKT_BUF_SZ*TX_RING_SIZE, + GFP_DMA | GFP_KERNEL); + if (!lp->tx_bounce_buffs) + goto out_rx; + } else + lp->tx_bounce_buffs = NULL; + + lp->chip_version = lance_version; + spin_lock_init(&lp->devlock); + + lp->init_block.mode = 0x0003; /* Disable Rx and Tx. */ + for (i = 0; i < 6; i++) + lp->init_block.phys_addr[i] = dev->dev_addr[i]; + lp->init_block.filter[0] = 0x00000000; + lp->init_block.filter[1] = 0x00000000; + lp->init_block.rx_ring = ((u32)isa_virt_to_bus(lp->rx_ring) & 0xffffff) | RX_RING_LEN_BITS; + lp->init_block.tx_ring = ((u32)isa_virt_to_bus(lp->tx_ring) & 0xffffff) | TX_RING_LEN_BITS; + + outw(0x0001, ioaddr+LANCE_ADDR); + inw(ioaddr+LANCE_ADDR); + outw((short) (u32) isa_virt_to_bus(&lp->init_block), ioaddr+LANCE_DATA); + outw(0x0002, ioaddr+LANCE_ADDR); + inw(ioaddr+LANCE_ADDR); + outw(((u32)isa_virt_to_bus(&lp->init_block)) >> 16, ioaddr+LANCE_DATA); + outw(0x0000, ioaddr+LANCE_ADDR); + inw(ioaddr+LANCE_ADDR); + + if (irq) { /* Set iff PCI card. */ + dev->dma = 4; /* Native bus-master, no DMA channel needed. */ + dev->irq = irq; + } else if (hp_builtin) { + static const char dma_tbl[4] = {3, 5, 6, 0}; + static const char irq_tbl[4] = {3, 4, 5, 9}; + unsigned char port_val = inb(hp_builtin); + dev->dma = dma_tbl[(port_val >> 4) & 3]; + dev->irq = irq_tbl[(port_val >> 2) & 3]; + printk(" HP Vectra IRQ %d DMA %d.\n", dev->irq, dev->dma); + } else if (hpJ2405A) { + static const char dma_tbl[4] = {3, 5, 6, 7}; + static const char irq_tbl[8] = {3, 4, 5, 9, 10, 11, 12, 15}; + short reset_val = inw(ioaddr+LANCE_RESET); + dev->dma = dma_tbl[(reset_val >> 2) & 3]; + dev->irq = irq_tbl[(reset_val >> 4) & 7]; + printk(" HP J2405A IRQ %d DMA %d.\n", dev->irq, dev->dma); + } else if (lance_version == PCNET_ISAP) { /* The plug-n-play version. */ + short bus_info; + outw(8, ioaddr+LANCE_ADDR); + bus_info = inw(ioaddr+LANCE_BUS_IF); + dev->dma = bus_info & 0x07; + dev->irq = (bus_info >> 4) & 0x0F; + } else { + /* The DMA channel may be passed in PARAM1. */ + if (dev->mem_start & 0x07) + dev->dma = dev->mem_start & 0x07; + } + + if (dev->dma == 0) { + /* Read the DMA channel status register, so that we can avoid + stuck DMA channels in the DMA detection below. */ + dma_channels = ((inb(DMA1_STAT_REG) >> 4) & 0x0f) | + (inb(DMA2_STAT_REG) & 0xf0); + } + err = -ENODEV; + if (dev->irq >= 2) + printk(" assigned IRQ %d", dev->irq); + else if (lance_version != 0) { /* 7990 boards need DMA detection first. */ + unsigned long irq_mask; + + /* To auto-IRQ we enable the initialization-done and DMA error + interrupts. For ISA boards we get a DMA error, but VLB and PCI + boards will work. */ + irq_mask = probe_irq_on(); + + /* Trigger an initialization just for the interrupt. */ + outw(0x0041, ioaddr+LANCE_DATA); + + mdelay(20); + dev->irq = probe_irq_off(irq_mask); + if (dev->irq) + printk(", probed IRQ %d", dev->irq); + else { + printk(", failed to detect IRQ line.\n"); + goto out_tx; + } + + /* Check for the initialization done bit, 0x0100, which means + that we don't need a DMA channel. */ + if (inw(ioaddr+LANCE_DATA) & 0x0100) + dev->dma = 4; + } + + if (dev->dma == 4) { + printk(", no DMA needed.\n"); + } else if (dev->dma) { + if (request_dma(dev->dma, chipname)) { + printk("DMA %d allocation failed.\n", dev->dma); + goto out_tx; + } else + printk(", assigned DMA %d.\n", dev->dma); + } else { /* OK, we have to auto-DMA. */ + for (i = 0; i < 4; i++) { + static const char dmas[] = { 5, 6, 7, 3 }; + int dma = dmas[i]; + int boguscnt; + + /* Don't enable a permanently busy DMA channel, or the machine + will hang. */ + if (test_bit(dma, &dma_channels)) + continue; + outw(0x7f04, ioaddr+LANCE_DATA); /* Clear the memory error bits. */ + if (request_dma(dma, chipname)) + continue; + + flags=claim_dma_lock(); + set_dma_mode(dma, DMA_MODE_CASCADE); + enable_dma(dma); + release_dma_lock(flags); + + /* Trigger an initialization. */ + outw(0x0001, ioaddr+LANCE_DATA); + for (boguscnt = 100; boguscnt > 0; --boguscnt) + if (inw(ioaddr+LANCE_DATA) & 0x0900) + break; + if (inw(ioaddr+LANCE_DATA) & 0x0100) { + dev->dma = dma; + printk(", DMA %d.\n", dev->dma); + break; + } else { + flags=claim_dma_lock(); + disable_dma(dma); + release_dma_lock(flags); + free_dma(dma); + } + } + if (i == 4) { /* Failure: bail. */ + printk("DMA detection failed.\n"); + goto out_tx; + } + } + + if (lance_version == 0 && dev->irq == 0) { + /* We may auto-IRQ now that we have a DMA channel. */ + /* Trigger an initialization just for the interrupt. */ + unsigned long irq_mask; + + irq_mask = probe_irq_on(); + outw(0x0041, ioaddr+LANCE_DATA); + + mdelay(40); + dev->irq = probe_irq_off(irq_mask); + if (dev->irq == 0) { + printk(" Failed to detect the 7990 IRQ line.\n"); + goto out_dma; + } + printk(" Auto-IRQ detected IRQ%d.\n", dev->irq); + } + + if (chip_table[lp->chip_version].flags & LANCE_ENABLE_AUTOSELECT) { + /* Turn on auto-select of media (10baseT or BNC) so that the user + can watch the LEDs even if the board isn't opened. */ + outw(0x0002, ioaddr+LANCE_ADDR); + /* Don't touch 10base2 power bit. */ + outw(inw(ioaddr+LANCE_BUS_IF) | 0x0002, ioaddr+LANCE_BUS_IF); + } + + if (lance_debug > 0 && did_version++ == 0) + printk(version); + + /* The LANCE-specific entries in the device structure. */ + dev->netdev_ops = &lance_netdev_ops; + dev->watchdog_timeo = TX_TIMEOUT; + + err = register_netdev(dev); + if (err) + goto out_dma; + return 0; +out_dma: + if (dev->dma != 4) + free_dma(dev->dma); +out_tx: + kfree(lp->tx_bounce_buffs); +out_rx: + kfree((void*)lp->rx_buffs); +out_lp: + kfree(lp); + return err; +} + + +static int +lance_open(struct net_device *dev) +{ + struct lance_private *lp = dev->ml_priv; + int ioaddr = dev->base_addr; + int i; + + if (dev->irq == 0 || + request_irq(dev->irq, lance_interrupt, 0, lp->name, dev)) { + return -EAGAIN; + } + + /* We used to allocate DMA here, but that was silly. + DMA lines can't be shared! We now permanently allocate them. */ + + /* Reset the LANCE */ + inw(ioaddr+LANCE_RESET); + + /* The DMA controller is used as a no-operation slave, "cascade mode". */ + if (dev->dma != 4) { + unsigned long flags=claim_dma_lock(); + enable_dma(dev->dma); + set_dma_mode(dev->dma, DMA_MODE_CASCADE); + release_dma_lock(flags); + } + + /* Un-Reset the LANCE, needed only for the NE2100. */ + if (chip_table[lp->chip_version].flags & LANCE_MUST_UNRESET) + outw(0, ioaddr+LANCE_RESET); + + if (chip_table[lp->chip_version].flags & LANCE_ENABLE_AUTOSELECT) { + /* This is 79C960-specific: Turn on auto-select of media (AUI, BNC). */ + outw(0x0002, ioaddr+LANCE_ADDR); + /* Only touch autoselect bit. */ + outw(inw(ioaddr+LANCE_BUS_IF) | 0x0002, ioaddr+LANCE_BUS_IF); + } + + if (lance_debug > 1) + printk("%s: lance_open() irq %d dma %d tx/rx rings %#x/%#x init %#x.\n", + dev->name, dev->irq, dev->dma, + (u32) isa_virt_to_bus(lp->tx_ring), + (u32) isa_virt_to_bus(lp->rx_ring), + (u32) isa_virt_to_bus(&lp->init_block)); + + lance_init_ring(dev, GFP_KERNEL); + /* Re-initialize the LANCE, and start it when done. */ + outw(0x0001, ioaddr+LANCE_ADDR); + outw((short) (u32) isa_virt_to_bus(&lp->init_block), ioaddr+LANCE_DATA); + outw(0x0002, ioaddr+LANCE_ADDR); + outw(((u32)isa_virt_to_bus(&lp->init_block)) >> 16, ioaddr+LANCE_DATA); + + outw(0x0004, ioaddr+LANCE_ADDR); + outw(0x0915, ioaddr+LANCE_DATA); + + outw(0x0000, ioaddr+LANCE_ADDR); + outw(0x0001, ioaddr+LANCE_DATA); + + netif_start_queue (dev); + + i = 0; + while (i++ < 100) + if (inw(ioaddr+LANCE_DATA) & 0x0100) + break; + /* + * We used to clear the InitDone bit, 0x0100, here but Mark Stockton + * reports that doing so triggers a bug in the '974. + */ + outw(0x0042, ioaddr+LANCE_DATA); + + if (lance_debug > 2) + printk("%s: LANCE open after %d ticks, init block %#x csr0 %4.4x.\n", + dev->name, i, (u32) isa_virt_to_bus(&lp->init_block), inw(ioaddr+LANCE_DATA)); + + return 0; /* Always succeed */ +} + +/* The LANCE has been halted for one reason or another (busmaster memory + arbitration error, Tx FIFO underflow, driver stopped it to reconfigure, + etc.). Modern LANCE variants always reload their ring-buffer + configuration when restarted, so we must reinitialize our ring + context before restarting. As part of this reinitialization, + find all packets still on the Tx ring and pretend that they had been + sent (in effect, drop the packets on the floor) - the higher-level + protocols will time out and retransmit. It'd be better to shuffle + these skbs to a temp list and then actually re-Tx them after + restarting the chip, but I'm too lazy to do so right now. dplatt@3do.com +*/ + +static void +lance_purge_ring(struct net_device *dev) +{ + struct lance_private *lp = dev->ml_priv; + int i; + + /* Free all the skbuffs in the Rx and Tx queues. */ + for (i = 0; i < RX_RING_SIZE; i++) { + struct sk_buff *skb = lp->rx_skbuff[i]; + lp->rx_skbuff[i] = NULL; + lp->rx_ring[i].base = 0; /* Not owned by LANCE chip. */ + if (skb) + dev_kfree_skb_any(skb); + } + for (i = 0; i < TX_RING_SIZE; i++) { + if (lp->tx_skbuff[i]) { + dev_kfree_skb_any(lp->tx_skbuff[i]); + lp->tx_skbuff[i] = NULL; + } + } +} + + +/* Initialize the LANCE Rx and Tx rings. */ +static void +lance_init_ring(struct net_device *dev, gfp_t gfp) +{ + struct lance_private *lp = dev->ml_priv; + int i; + + lp->cur_rx = lp->cur_tx = 0; + lp->dirty_rx = lp->dirty_tx = 0; + + for (i = 0; i < RX_RING_SIZE; i++) { + struct sk_buff *skb; + void *rx_buff; + + skb = alloc_skb(PKT_BUF_SZ, GFP_DMA | gfp); + lp->rx_skbuff[i] = skb; + if (skb) { + skb->dev = dev; + rx_buff = skb->data; + } else + rx_buff = kmalloc(PKT_BUF_SZ, GFP_DMA | gfp); + if (rx_buff == NULL) + lp->rx_ring[i].base = 0; + else + lp->rx_ring[i].base = (u32)isa_virt_to_bus(rx_buff) | 0x80000000; + lp->rx_ring[i].buf_length = -PKT_BUF_SZ; + } + /* The Tx buffer address is filled in as needed, but we do need to clear + the upper ownership bit. */ + for (i = 0; i < TX_RING_SIZE; i++) { + lp->tx_skbuff[i] = NULL; + lp->tx_ring[i].base = 0; + } + + lp->init_block.mode = 0x0000; + for (i = 0; i < 6; i++) + lp->init_block.phys_addr[i] = dev->dev_addr[i]; + lp->init_block.filter[0] = 0x00000000; + lp->init_block.filter[1] = 0x00000000; + lp->init_block.rx_ring = ((u32)isa_virt_to_bus(lp->rx_ring) & 0xffffff) | RX_RING_LEN_BITS; + lp->init_block.tx_ring = ((u32)isa_virt_to_bus(lp->tx_ring) & 0xffffff) | TX_RING_LEN_BITS; +} + +static void +lance_restart(struct net_device *dev, unsigned int csr0_bits, int must_reinit) +{ + struct lance_private *lp = dev->ml_priv; + + if (must_reinit || + (chip_table[lp->chip_version].flags & LANCE_MUST_REINIT_RING)) { + lance_purge_ring(dev); + lance_init_ring(dev, GFP_ATOMIC); + } + outw(0x0000, dev->base_addr + LANCE_ADDR); + outw(csr0_bits, dev->base_addr + LANCE_DATA); +} + + +static void lance_tx_timeout (struct net_device *dev) +{ + struct lance_private *lp = (struct lance_private *) dev->ml_priv; + int ioaddr = dev->base_addr; + + outw (0, ioaddr + LANCE_ADDR); + printk ("%s: transmit timed out, status %4.4x, resetting.\n", + dev->name, inw (ioaddr + LANCE_DATA)); + outw (0x0004, ioaddr + LANCE_DATA); + dev->stats.tx_errors++; +#ifndef final_version + if (lance_debug > 3) { + int i; + printk (" Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.", + lp->dirty_tx, lp->cur_tx, netif_queue_stopped(dev) ? " (full)" : "", + lp->cur_rx); + for (i = 0; i < RX_RING_SIZE; i++) + printk ("%s %08x %04x %04x", i & 0x3 ? "" : "\n ", + lp->rx_ring[i].base, -lp->rx_ring[i].buf_length, + lp->rx_ring[i].msg_length); + for (i = 0; i < TX_RING_SIZE; i++) + printk ("%s %08x %04x %04x", i & 0x3 ? "" : "\n ", + lp->tx_ring[i].base, -lp->tx_ring[i].length, + lp->tx_ring[i].misc); + printk ("\n"); + } +#endif + lance_restart (dev, 0x0043, 1); + + dev->trans_start = jiffies; /* prevent tx timeout */ + netif_wake_queue (dev); +} + + +static netdev_tx_t lance_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct lance_private *lp = dev->ml_priv; + int ioaddr = dev->base_addr; + int entry; + unsigned long flags; + + spin_lock_irqsave(&lp->devlock, flags); + + if (lance_debug > 3) { + outw(0x0000, ioaddr+LANCE_ADDR); + printk("%s: lance_start_xmit() called, csr0 %4.4x.\n", dev->name, + inw(ioaddr+LANCE_DATA)); + outw(0x0000, ioaddr+LANCE_DATA); + } + + /* Fill in a Tx ring entry */ + + /* Mask to ring buffer boundary. */ + entry = lp->cur_tx & TX_RING_MOD_MASK; + + /* Caution: the write order is important here, set the base address + with the "ownership" bits last. */ + + /* The old LANCE chips doesn't automatically pad buffers to min. size. */ + if (chip_table[lp->chip_version].flags & LANCE_MUST_PAD) { + if (skb->len < ETH_ZLEN) { + if (skb_padto(skb, ETH_ZLEN)) + goto out; + lp->tx_ring[entry].length = -ETH_ZLEN; + } + else + lp->tx_ring[entry].length = -skb->len; + } else + lp->tx_ring[entry].length = -skb->len; + + lp->tx_ring[entry].misc = 0x0000; + + dev->stats.tx_bytes += skb->len; + + /* If any part of this buffer is >16M we must copy it to a low-memory + buffer. */ + if ((u32)isa_virt_to_bus(skb->data) + skb->len > 0x01000000) { + if (lance_debug > 5) + printk("%s: bouncing a high-memory packet (%#x).\n", + dev->name, (u32)isa_virt_to_bus(skb->data)); + skb_copy_from_linear_data(skb, &lp->tx_bounce_buffs[entry], skb->len); + lp->tx_ring[entry].base = + ((u32)isa_virt_to_bus((lp->tx_bounce_buffs + entry)) & 0xffffff) | 0x83000000; + dev_kfree_skb(skb); + } else { + lp->tx_skbuff[entry] = skb; + lp->tx_ring[entry].base = ((u32)isa_virt_to_bus(skb->data) & 0xffffff) | 0x83000000; + } + lp->cur_tx++; + + /* Trigger an immediate send poll. */ + outw(0x0000, ioaddr+LANCE_ADDR); + outw(0x0048, ioaddr+LANCE_DATA); + + if ((lp->cur_tx - lp->dirty_tx) >= TX_RING_SIZE) + netif_stop_queue(dev); + +out: + spin_unlock_irqrestore(&lp->devlock, flags); + return NETDEV_TX_OK; +} + +/* The LANCE interrupt handler. */ +static irqreturn_t lance_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct lance_private *lp; + int csr0, ioaddr, boguscnt=10; + int must_restart; + + ioaddr = dev->base_addr; + lp = dev->ml_priv; + + spin_lock (&lp->devlock); + + outw(0x00, dev->base_addr + LANCE_ADDR); + while ((csr0 = inw(dev->base_addr + LANCE_DATA)) & 0x8600 && + --boguscnt >= 0) { + /* Acknowledge all of the current interrupt sources ASAP. */ + outw(csr0 & ~0x004f, dev->base_addr + LANCE_DATA); + + must_restart = 0; + + if (lance_debug > 5) + printk("%s: interrupt csr0=%#2.2x new csr=%#2.2x.\n", + dev->name, csr0, inw(dev->base_addr + LANCE_DATA)); + + if (csr0 & 0x0400) /* Rx interrupt */ + lance_rx(dev); + + if (csr0 & 0x0200) { /* Tx-done interrupt */ + int dirty_tx = lp->dirty_tx; + + while (dirty_tx < lp->cur_tx) { + int entry = dirty_tx & TX_RING_MOD_MASK; + int status = lp->tx_ring[entry].base; + + if (status < 0) + break; /* It still hasn't been Txed */ + + lp->tx_ring[entry].base = 0; + + if (status & 0x40000000) { + /* There was an major error, log it. */ + int err_status = lp->tx_ring[entry].misc; + dev->stats.tx_errors++; + if (err_status & 0x0400) + dev->stats.tx_aborted_errors++; + if (err_status & 0x0800) + dev->stats.tx_carrier_errors++; + if (err_status & 0x1000) + dev->stats.tx_window_errors++; + if (err_status & 0x4000) { + /* Ackk! On FIFO errors the Tx unit is turned off! */ + dev->stats.tx_fifo_errors++; + /* Remove this verbosity later! */ + printk("%s: Tx FIFO error! Status %4.4x.\n", + dev->name, csr0); + /* Restart the chip. */ + must_restart = 1; + } + } else { + if (status & 0x18000000) + dev->stats.collisions++; + dev->stats.tx_packets++; + } + + /* We must free the original skb if it's not a data-only copy + in the bounce buffer. */ + if (lp->tx_skbuff[entry]) { + dev_kfree_skb_irq(lp->tx_skbuff[entry]); + lp->tx_skbuff[entry] = NULL; + } + dirty_tx++; + } + +#ifndef final_version + if (lp->cur_tx - dirty_tx >= TX_RING_SIZE) { + printk("out-of-sync dirty pointer, %d vs. %d, full=%s.\n", + dirty_tx, lp->cur_tx, + netif_queue_stopped(dev) ? "yes" : "no"); + dirty_tx += TX_RING_SIZE; + } +#endif + + /* if the ring is no longer full, accept more packets */ + if (netif_queue_stopped(dev) && + dirty_tx > lp->cur_tx - TX_RING_SIZE + 2) + netif_wake_queue (dev); + + lp->dirty_tx = dirty_tx; + } + + /* Log misc errors. */ + if (csr0 & 0x4000) + dev->stats.tx_errors++; /* Tx babble. */ + if (csr0 & 0x1000) + dev->stats.rx_errors++; /* Missed a Rx frame. */ + if (csr0 & 0x0800) { + printk("%s: Bus master arbitration failure, status %4.4x.\n", + dev->name, csr0); + /* Restart the chip. */ + must_restart = 1; + } + + if (must_restart) { + /* stop the chip to clear the error condition, then restart */ + outw(0x0000, dev->base_addr + LANCE_ADDR); + outw(0x0004, dev->base_addr + LANCE_DATA); + lance_restart(dev, 0x0002, 0); + } + } + + /* Clear any other interrupt, and set interrupt enable. */ + outw(0x0000, dev->base_addr + LANCE_ADDR); + outw(0x7940, dev->base_addr + LANCE_DATA); + + if (lance_debug > 4) + printk("%s: exiting interrupt, csr%d=%#4.4x.\n", + dev->name, inw(ioaddr + LANCE_ADDR), + inw(dev->base_addr + LANCE_DATA)); + + spin_unlock (&lp->devlock); + return IRQ_HANDLED; +} + +static int +lance_rx(struct net_device *dev) +{ + struct lance_private *lp = dev->ml_priv; + int entry = lp->cur_rx & RX_RING_MOD_MASK; + int i; + + /* If we own the next entry, it's a new packet. Send it up. */ + while (lp->rx_ring[entry].base >= 0) { + int status = lp->rx_ring[entry].base >> 24; + + if (status != 0x03) { /* There was an error. */ + /* There is a tricky error noted by John Murphy, + <murf@perftech.com> to Russ Nelson: Even with full-sized + buffers it's possible for a jabber packet to use two + buffers, with only the last correctly noting the error. */ + if (status & 0x01) /* Only count a general error at the */ + dev->stats.rx_errors++; /* end of a packet.*/ + if (status & 0x20) + dev->stats.rx_frame_errors++; + if (status & 0x10) + dev->stats.rx_over_errors++; + if (status & 0x08) + dev->stats.rx_crc_errors++; + if (status & 0x04) + dev->stats.rx_fifo_errors++; + lp->rx_ring[entry].base &= 0x03ffffff; + } + else + { + /* Malloc up new buffer, compatible with net3. */ + short pkt_len = (lp->rx_ring[entry].msg_length & 0xfff)-4; + struct sk_buff *skb; + + if(pkt_len<60) + { + printk("%s: Runt packet!\n",dev->name); + dev->stats.rx_errors++; + } + else + { + skb = dev_alloc_skb(pkt_len+2); + if (skb == NULL) + { + printk("%s: Memory squeeze, deferring packet.\n", dev->name); + for (i=0; i < RX_RING_SIZE; i++) + if (lp->rx_ring[(entry+i) & RX_RING_MOD_MASK].base < 0) + break; + + if (i > RX_RING_SIZE -2) + { + dev->stats.rx_dropped++; + lp->rx_ring[entry].base |= 0x80000000; + lp->cur_rx++; + } + break; + } + skb_reserve(skb,2); /* 16 byte align */ + skb_put(skb,pkt_len); /* Make room */ + skb_copy_to_linear_data(skb, + (unsigned char *)isa_bus_to_virt((lp->rx_ring[entry].base & 0x00ffffff)), + pkt_len); + skb->protocol=eth_type_trans(skb,dev); + netif_rx(skb); + dev->stats.rx_packets++; + dev->stats.rx_bytes += pkt_len; + } + } + /* The docs say that the buffer length isn't touched, but Andrew Boyd + of QNX reports that some revs of the 79C965 clear it. */ + lp->rx_ring[entry].buf_length = -PKT_BUF_SZ; + lp->rx_ring[entry].base |= 0x80000000; + entry = (++lp->cur_rx) & RX_RING_MOD_MASK; + } + + /* We should check that at least two ring entries are free. If not, + we should free one and mark stats->rx_dropped++. */ + + return 0; +} + +static int +lance_close(struct net_device *dev) +{ + int ioaddr = dev->base_addr; + struct lance_private *lp = dev->ml_priv; + + netif_stop_queue (dev); + + if (chip_table[lp->chip_version].flags & LANCE_HAS_MISSED_FRAME) { + outw(112, ioaddr+LANCE_ADDR); + dev->stats.rx_missed_errors = inw(ioaddr+LANCE_DATA); + } + outw(0, ioaddr+LANCE_ADDR); + + if (lance_debug > 1) + printk("%s: Shutting down ethercard, status was %2.2x.\n", + dev->name, inw(ioaddr+LANCE_DATA)); + + /* We stop the LANCE here -- it occasionally polls + memory if we don't. */ + outw(0x0004, ioaddr+LANCE_DATA); + + if (dev->dma != 4) + { + unsigned long flags=claim_dma_lock(); + disable_dma(dev->dma); + release_dma_lock(flags); + } + free_irq(dev->irq, dev); + + lance_purge_ring(dev); + + return 0; +} + +static struct net_device_stats *lance_get_stats(struct net_device *dev) +{ + struct lance_private *lp = dev->ml_priv; + + if (chip_table[lp->chip_version].flags & LANCE_HAS_MISSED_FRAME) { + short ioaddr = dev->base_addr; + short saved_addr; + unsigned long flags; + + spin_lock_irqsave(&lp->devlock, flags); + saved_addr = inw(ioaddr+LANCE_ADDR); + outw(112, ioaddr+LANCE_ADDR); + dev->stats.rx_missed_errors = inw(ioaddr+LANCE_DATA); + outw(saved_addr, ioaddr+LANCE_ADDR); + spin_unlock_irqrestore(&lp->devlock, flags); + } + + return &dev->stats; +} + +/* Set or clear the multicast filter for this adaptor. + */ + +static void set_multicast_list(struct net_device *dev) +{ + short ioaddr = dev->base_addr; + + outw(0, ioaddr+LANCE_ADDR); + outw(0x0004, ioaddr+LANCE_DATA); /* Temporarily stop the lance. */ + + if (dev->flags&IFF_PROMISC) { + outw(15, ioaddr+LANCE_ADDR); + outw(0x8000, ioaddr+LANCE_DATA); /* Set promiscuous mode */ + } else { + short multicast_table[4]; + int i; + int num_addrs=netdev_mc_count(dev); + if(dev->flags&IFF_ALLMULTI) + num_addrs=1; + /* FIXIT: We don't use the multicast table, but rely on upper-layer filtering. */ + memset(multicast_table, (num_addrs == 0) ? 0 : -1, sizeof(multicast_table)); + for (i = 0; i < 4; i++) { + outw(8 + i, ioaddr+LANCE_ADDR); + outw(multicast_table[i], ioaddr+LANCE_DATA); + } + outw(15, ioaddr+LANCE_ADDR); + outw(0x0000, ioaddr+LANCE_DATA); /* Unset promiscuous mode */ + } + + lance_restart(dev, 0x0142, 0); /* Resume normal operation */ + +} + diff --git a/drivers/net/ethernet/amd/mvme147.c b/drivers/net/ethernet/amd/mvme147.c new file mode 100644 index 000000000000..56bc47a94186 --- /dev/null +++ b/drivers/net/ethernet/amd/mvme147.c @@ -0,0 +1,205 @@ +/* mvme147.c : the Linux/mvme147/lance ethernet driver + * + * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk> + * Based on the Sun Lance driver and the NetBSD HP Lance driver + * Uses the generic 7990.c LANCE code. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/string.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/gfp.h> +/* Used for the temporal inet entries and routing */ +#include <linux/socket.h> +#include <linux/route.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/pgtable.h> +#include <asm/mvme147hw.h> + +/* We have 16834 bytes of RAM for the init block and buffers. This places + * an upper limit on the number of buffers we can use. NetBSD uses 8 Rx + * buffers and 2 Tx buffers. + */ +#define LANCE_LOG_TX_BUFFERS 1 +#define LANCE_LOG_RX_BUFFERS 3 + +#include "7990.h" /* use generic LANCE code */ + +/* Our private data structure */ +struct m147lance_private { + struct lance_private lance; + unsigned long ram; +}; + +/* function prototypes... This is easy because all the grot is in the + * generic LANCE support. All we have to support is probing for boards, + * plus board-specific init, open and close actions. + * Oh, and we need to tell the generic code how to read and write LANCE registers... + */ +static int m147lance_open(struct net_device *dev); +static int m147lance_close(struct net_device *dev); +static void m147lance_writerap(struct lance_private *lp, unsigned short value); +static void m147lance_writerdp(struct lance_private *lp, unsigned short value); +static unsigned short m147lance_readrdp(struct lance_private *lp); + +typedef void (*writerap_t)(void *, unsigned short); +typedef void (*writerdp_t)(void *, unsigned short); +typedef unsigned short (*readrdp_t)(void *); + +static const struct net_device_ops lance_netdev_ops = { + .ndo_open = m147lance_open, + .ndo_stop = m147lance_close, + .ndo_start_xmit = lance_start_xmit, + .ndo_set_rx_mode = lance_set_multicast, + .ndo_tx_timeout = lance_tx_timeout, + .ndo_change_mtu = eth_change_mtu, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = eth_mac_addr, +}; + +/* Initialise the one and only on-board 7990 */ +struct net_device * __init mvme147lance_probe(int unit) +{ + struct net_device *dev; + static int called; + static const char name[] = "MVME147 LANCE"; + struct m147lance_private *lp; + u_long *addr; + u_long address; + int err; + + if (!MACH_IS_MVME147 || called) + return ERR_PTR(-ENODEV); + called++; + + dev = alloc_etherdev(sizeof(struct m147lance_private)); + if (!dev) + return ERR_PTR(-ENOMEM); + + if (unit >= 0) + sprintf(dev->name, "eth%d", unit); + + /* Fill the dev fields */ + dev->base_addr = (unsigned long)MVME147_LANCE_BASE; + dev->netdev_ops = &lance_netdev_ops; + dev->dma = 0; + + addr=(u_long *)ETHERNET_ADDRESS; + address = *addr; + dev->dev_addr[0]=0x08; + dev->dev_addr[1]=0x00; + dev->dev_addr[2]=0x3e; + address=address>>8; + dev->dev_addr[5]=address&0xff; + address=address>>8; + dev->dev_addr[4]=address&0xff; + address=address>>8; + dev->dev_addr[3]=address&0xff; + + printk("%s: MVME147 at 0x%08lx, irq %d, " + "Hardware Address %pM\n", + dev->name, dev->base_addr, MVME147_LANCE_IRQ, + dev->dev_addr); + + lp = netdev_priv(dev); + lp->ram = __get_dma_pages(GFP_ATOMIC, 3); /* 16K */ + if (!lp->ram) + { + printk("%s: No memory for LANCE buffers\n", dev->name); + free_netdev(dev); + return ERR_PTR(-ENOMEM); + } + + lp->lance.name = (char*)name; /* discards const, shut up gcc */ + lp->lance.base = dev->base_addr; + lp->lance.init_block = (struct lance_init_block *)(lp->ram); /* CPU addr */ + lp->lance.lance_init_block = (struct lance_init_block *)(lp->ram); /* LANCE addr of same RAM */ + lp->lance.busmaster_regval = LE_C3_BSWP; /* we're bigendian */ + lp->lance.irq = MVME147_LANCE_IRQ; + lp->lance.writerap = (writerap_t)m147lance_writerap; + lp->lance.writerdp = (writerdp_t)m147lance_writerdp; + lp->lance.readrdp = (readrdp_t)m147lance_readrdp; + lp->lance.lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS; + lp->lance.lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS; + lp->lance.rx_ring_mod_mask = RX_RING_MOD_MASK; + lp->lance.tx_ring_mod_mask = TX_RING_MOD_MASK; + + err = register_netdev(dev); + if (err) { + free_pages(lp->ram, 3); + free_netdev(dev); + return ERR_PTR(err); + } + + return dev; +} + +static void m147lance_writerap(struct lance_private *lp, unsigned short value) +{ + out_be16(lp->base + LANCE_RAP, value); +} + +static void m147lance_writerdp(struct lance_private *lp, unsigned short value) +{ + out_be16(lp->base + LANCE_RDP, value); +} + +static unsigned short m147lance_readrdp(struct lance_private *lp) +{ + return in_be16(lp->base + LANCE_RDP); +} + +static int m147lance_open(struct net_device *dev) +{ + int status; + + status = lance_open(dev); /* call generic lance open code */ + if (status) + return status; + /* enable interrupts at board level. */ + m147_pcc->lan_cntrl=0; /* clear the interrupts (if any) */ + m147_pcc->lan_cntrl=0x08 | 0x04; /* Enable irq 4 */ + + return 0; +} + +static int m147lance_close(struct net_device *dev) +{ + /* disable interrupts at boardlevel */ + m147_pcc->lan_cntrl=0x0; /* disable interrupts */ + lance_close(dev); + return 0; +} + +#ifdef MODULE +MODULE_LICENSE("GPL"); + +static struct net_device *dev_mvme147_lance; +int __init init_module(void) +{ + dev_mvme147_lance = mvme147lance_probe(-1); + if (IS_ERR(dev_mvme147_lance)) + return PTR_ERR(dev_mvme147_lance); + return 0; +} + +void __exit cleanup_module(void) +{ + struct m147lance_private *lp = netdev_priv(dev_mvme147_lance); + unregister_netdev(dev_mvme147_lance); + free_pages(lp->ram, 3); + free_netdev(dev_mvme147_lance); +} + +#endif /* MODULE */ diff --git a/drivers/net/ethernet/amd/ni65.c b/drivers/net/ethernet/amd/ni65.c new file mode 100644 index 000000000000..6e6aa7213aab --- /dev/null +++ b/drivers/net/ethernet/amd/ni65.c @@ -0,0 +1,1254 @@ +/* + * ni6510 (am7990 'lance' chip) driver for Linux-net-3 + * BETAcode v0.71 (96/09/29) for 2.0.0 (or later) + * copyrights (c) 1994,1995,1996 by M.Hipp + * + * This driver can handle the old ni6510 board and the newer ni6510 + * EtherBlaster. (probably it also works with every full NE2100 + * compatible card) + * + * driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7 + * + * This is an extension to the Linux operating system, and is covered by the + * same GNU General Public License that covers the Linux-kernel. + * + * comments/bugs/suggestions can be sent to: + * Michael Hipp + * email: hippm@informatik.uni-tuebingen.de + * + * sources: + * some things are from the 'ni6510-packet-driver for dos by Russ Nelson' + * and from the original drivers by D.Becker + * + * known problems: + * - on some PCI boards (including my own) the card/board/ISA-bridge has + * problems with bus master DMA. This results in lotsa overruns. + * It may help to '#define RCV_PARANOIA_CHECK' or try to #undef + * the XMT and RCV_VIA_SKB option .. this reduces driver performance. + * Or just play with your BIOS options to optimize ISA-DMA access. + * Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE + * defines -> please report me your experience then + * - Harald reported for ASUS SP3G mainboards, that you should use + * the 'optimal settings' from the user's manual on page 3-12! + * + * credits: + * thanx to Jason Sullivan for sending me a ni6510 card! + * lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig + * + * simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB) + * average: FTP -> 8384421 bytes received in 8.5 seconds + * (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS) + * peak: FTP -> 8384421 bytes received in 7.5 seconds + * (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS) + */ + +/* + * 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK) + * 96.Sept.29: virt_to_bus stuff added for new memory modell + * 96.April.29: Added Harald Koenig's Patches (MH) + * 96.April.13: enhanced error handling .. more tests (MH) + * 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH) + * 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH) + * 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH) + * hopefully no more 16MB limit + * + * 95.Nov.18: multicast tweaked (AC). + * + * 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH) + * + * 94.July.16: fixed bugs in recv_skb and skb-alloc stuff (MH) + */ + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/module.h> +#include <linux/bitops.h> + +#include <asm/io.h> +#include <asm/dma.h> + +#include "ni65.h" + +/* + * the current setting allows an acceptable performance + * for 'RCV_PARANOIA_CHECK' read the 'known problems' part in + * the header of this file + * 'invert' the defines for max. performance. This may cause DMA problems + * on some boards (e.g on my ASUS SP3G) + */ +#undef XMT_VIA_SKB +#undef RCV_VIA_SKB +#define RCV_PARANOIA_CHECK + +#define MID_PERFORMANCE + +#if defined( LOW_PERFORMANCE ) + static int isa0=7,isa1=7,csr80=0x0c10; +#elif defined( MID_PERFORMANCE ) + static int isa0=5,isa1=5,csr80=0x2810; +#else /* high performance */ + static int isa0=4,isa1=4,csr80=0x0017; +#endif + +/* + * a few card/vendor specific defines + */ +#define NI65_ID0 0x00 +#define NI65_ID1 0x55 +#define NI65_EB_ID0 0x52 +#define NI65_EB_ID1 0x44 +#define NE2100_ID0 0x57 +#define NE2100_ID1 0x57 + +#define PORT p->cmdr_addr + +/* + * buffer configuration + */ +#if 1 +#define RMDNUM 16 +#define RMDNUMMASK 0x80000000 +#else +#define RMDNUM 8 +#define RMDNUMMASK 0x60000000 /* log2(RMDNUM)<<29 */ +#endif + +#if 0 +#define TMDNUM 1 +#define TMDNUMMASK 0x00000000 +#else +#define TMDNUM 4 +#define TMDNUMMASK 0x40000000 /* log2(TMDNUM)<<29 */ +#endif + +/* slightly oversized */ +#define R_BUF_SIZE 1544 +#define T_BUF_SIZE 1544 + +/* + * lance register defines + */ +#define L_DATAREG 0x00 +#define L_ADDRREG 0x02 +#define L_RESET 0x04 +#define L_CONFIG 0x05 +#define L_BUSIF 0x06 + +/* + * to access the lance/am7990-regs, you have to write + * reg-number into L_ADDRREG, then you can access it using L_DATAREG + */ +#define CSR0 0x00 +#define CSR1 0x01 +#define CSR2 0x02 +#define CSR3 0x03 + +#define INIT_RING_BEFORE_START 0x1 +#define FULL_RESET_ON_ERROR 0x2 + +#if 0 +#define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \ + outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} +#define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\ + inw(PORT+L_DATAREG)) +#if 0 +#define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} +#else +#define writedatareg(val) { writereg(val,CSR0); } +#endif +#else +#define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);} +#define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG)) +#define writedatareg(val) { writereg(val,CSR0); } +#endif + +static unsigned char ni_vendor[] = { 0x02,0x07,0x01 }; + +static struct card { + unsigned char id0,id1; + short id_offset; + short total_size; + short cmd_offset; + short addr_offset; + unsigned char *vendor_id; + char *cardname; + unsigned long config; +} cards[] = { + { + .id0 = NI65_ID0, + .id1 = NI65_ID1, + .id_offset = 0x0e, + .total_size = 0x10, + .cmd_offset = 0x0, + .addr_offset = 0x8, + .vendor_id = ni_vendor, + .cardname = "ni6510", + .config = 0x1, + }, + { + .id0 = NI65_EB_ID0, + .id1 = NI65_EB_ID1, + .id_offset = 0x0e, + .total_size = 0x18, + .cmd_offset = 0x10, + .addr_offset = 0x0, + .vendor_id = ni_vendor, + .cardname = "ni6510 EtherBlaster", + .config = 0x2, + }, + { + .id0 = NE2100_ID0, + .id1 = NE2100_ID1, + .id_offset = 0x0e, + .total_size = 0x18, + .cmd_offset = 0x10, + .addr_offset = 0x0, + .vendor_id = NULL, + .cardname = "generic NE2100", + .config = 0x0, + }, +}; +#define NUM_CARDS 3 + +struct priv +{ + struct rmd rmdhead[RMDNUM]; + struct tmd tmdhead[TMDNUM]; + struct init_block ib; + int rmdnum; + int tmdnum,tmdlast; +#ifdef RCV_VIA_SKB + struct sk_buff *recv_skb[RMDNUM]; +#else + void *recvbounce[RMDNUM]; +#endif +#ifdef XMT_VIA_SKB + struct sk_buff *tmd_skb[TMDNUM]; +#endif + void *tmdbounce[TMDNUM]; + int tmdbouncenum; + int lock,xmit_queued; + + void *self; + int cmdr_addr; + int cardno; + int features; + spinlock_t ring_lock; +}; + +static int ni65_probe1(struct net_device *dev,int); +static irqreturn_t ni65_interrupt(int irq, void * dev_id); +static void ni65_recv_intr(struct net_device *dev,int); +static void ni65_xmit_intr(struct net_device *dev,int); +static int ni65_open(struct net_device *dev); +static int ni65_lance_reinit(struct net_device *dev); +static void ni65_init_lance(struct priv *p,unsigned char*,int,int); +static netdev_tx_t ni65_send_packet(struct sk_buff *skb, + struct net_device *dev); +static void ni65_timeout(struct net_device *dev); +static int ni65_close(struct net_device *dev); +static int ni65_alloc_buffer(struct net_device *dev); +static void ni65_free_buffer(struct priv *p); +static void set_multicast_list(struct net_device *dev); + +static int irqtab[] __initdata = { 9,12,15,5 }; /* irq config-translate */ +static int dmatab[] __initdata = { 0,3,5,6,7 }; /* dma config-translate and autodetect */ + +static int debuglevel = 1; + +/* + * set 'performance' registers .. we must STOP lance for that + */ +static void ni65_set_performance(struct priv *p) +{ + writereg(CSR0_STOP | CSR0_CLRALL,CSR0); /* STOP */ + + if( !(cards[p->cardno].config & 0x02) ) + return; + + outw(80,PORT+L_ADDRREG); + if(inw(PORT+L_ADDRREG) != 80) + return; + + writereg( (csr80 & 0x3fff) ,80); /* FIFO watermarks */ + outw(0,PORT+L_ADDRREG); + outw((short)isa0,PORT+L_BUSIF); /* write ISA 0: DMA_R : isa0 * 50ns */ + outw(1,PORT+L_ADDRREG); + outw((short)isa1,PORT+L_BUSIF); /* write ISA 1: DMA_W : isa1 * 50ns */ + + outw(CSR0,PORT+L_ADDRREG); /* switch back to CSR0 */ +} + +/* + * open interface (up) + */ +static int ni65_open(struct net_device *dev) +{ + struct priv *p = dev->ml_priv; + int irqval = request_irq(dev->irq, ni65_interrupt,0, + cards[p->cardno].cardname,dev); + if (irqval) { + printk(KERN_ERR "%s: unable to get IRQ %d (irqval=%d).\n", + dev->name,dev->irq, irqval); + return -EAGAIN; + } + + if(ni65_lance_reinit(dev)) + { + netif_start_queue(dev); + return 0; + } + else + { + free_irq(dev->irq,dev); + return -EAGAIN; + } +} + +/* + * close interface (down) + */ +static int ni65_close(struct net_device *dev) +{ + struct priv *p = dev->ml_priv; + + netif_stop_queue(dev); + + outw(inw(PORT+L_RESET),PORT+L_RESET); /* that's the hard way */ + +#ifdef XMT_VIA_SKB + { + int i; + for(i=0;i<TMDNUM;i++) + { + if(p->tmd_skb[i]) { + dev_kfree_skb(p->tmd_skb[i]); + p->tmd_skb[i] = NULL; + } + } + } +#endif + free_irq(dev->irq,dev); + return 0; +} + +static void cleanup_card(struct net_device *dev) +{ + struct priv *p = dev->ml_priv; + disable_dma(dev->dma); + free_dma(dev->dma); + release_region(dev->base_addr, cards[p->cardno].total_size); + ni65_free_buffer(p); +} + +/* set: io,irq,dma or set it when calling insmod */ +static int irq; +static int io; +static int dma; + +/* + * Probe The Card (not the lance-chip) + */ +struct net_device * __init ni65_probe(int unit) +{ + struct net_device *dev = alloc_etherdev(0); + static const int ports[] = { 0x360, 0x300, 0x320, 0x340, 0 }; + const int *port; + int err = 0; + + if (!dev) + return ERR_PTR(-ENOMEM); + + if (unit >= 0) { + sprintf(dev->name, "eth%d", unit); + netdev_boot_setup_check(dev); + irq = dev->irq; + dma = dev->dma; + } else { + dev->base_addr = io; + } + + if (dev->base_addr > 0x1ff) { /* Check a single specified location. */ + err = ni65_probe1(dev, dev->base_addr); + } else if (dev->base_addr > 0) { /* Don't probe at all. */ + err = -ENXIO; + } else { + for (port = ports; *port && ni65_probe1(dev, *port); port++) + ; + if (!*port) + err = -ENODEV; + } + if (err) + goto out; + + err = register_netdev(dev); + if (err) + goto out1; + return dev; +out1: + cleanup_card(dev); +out: + free_netdev(dev); + return ERR_PTR(err); +} + +static const struct net_device_ops ni65_netdev_ops = { + .ndo_open = ni65_open, + .ndo_stop = ni65_close, + .ndo_start_xmit = ni65_send_packet, + .ndo_tx_timeout = ni65_timeout, + .ndo_set_rx_mode = set_multicast_list, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, +}; + +/* + * this is the real card probe .. + */ +static int __init ni65_probe1(struct net_device *dev,int ioaddr) +{ + int i,j; + struct priv *p; + unsigned long flags; + + dev->irq = irq; + dev->dma = dma; + + for(i=0;i<NUM_CARDS;i++) { + if(!request_region(ioaddr, cards[i].total_size, cards[i].cardname)) + continue; + if(cards[i].id_offset >= 0) { + if(inb(ioaddr+cards[i].id_offset+0) != cards[i].id0 || + inb(ioaddr+cards[i].id_offset+1) != cards[i].id1) { + release_region(ioaddr, cards[i].total_size); + continue; + } + } + if(cards[i].vendor_id) { + for(j=0;j<3;j++) + if(inb(ioaddr+cards[i].addr_offset+j) != cards[i].vendor_id[j]) { + release_region(ioaddr, cards[i].total_size); + continue; + } + } + break; + } + if(i == NUM_CARDS) + return -ENODEV; + + for(j=0;j<6;j++) + dev->dev_addr[j] = inb(ioaddr+cards[i].addr_offset+j); + + if( (j=ni65_alloc_buffer(dev)) < 0) { + release_region(ioaddr, cards[i].total_size); + return j; + } + p = dev->ml_priv; + p->cmdr_addr = ioaddr + cards[i].cmd_offset; + p->cardno = i; + spin_lock_init(&p->ring_lock); + + printk(KERN_INFO "%s: %s found at %#3x, ", dev->name, cards[p->cardno].cardname , ioaddr); + + outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */ + if( (j=readreg(CSR0)) != 0x4) { + printk("failed.\n"); + printk(KERN_ERR "%s: Can't RESET card: %04x\n", dev->name, j); + ni65_free_buffer(p); + release_region(ioaddr, cards[p->cardno].total_size); + return -EAGAIN; + } + + outw(88,PORT+L_ADDRREG); + if(inw(PORT+L_ADDRREG) == 88) { + unsigned long v; + v = inw(PORT+L_DATAREG); + v <<= 16; + outw(89,PORT+L_ADDRREG); + v |= inw(PORT+L_DATAREG); + printk("Version %#08lx, ",v); + p->features = INIT_RING_BEFORE_START; + } + else { + printk("ancient LANCE, "); + p->features = 0x0; + } + + if(test_bit(0,&cards[i].config)) { + dev->irq = irqtab[(inw(ioaddr+L_CONFIG)>>2)&3]; + dev->dma = dmatab[inw(ioaddr+L_CONFIG)&3]; + printk("IRQ %d (from card), DMA %d (from card).\n",dev->irq,dev->dma); + } + else { + if(dev->dma == 0) { + /* 'stuck test' from lance.c */ + unsigned long dma_channels = + ((inb(DMA1_STAT_REG) >> 4) & 0x0f) + | (inb(DMA2_STAT_REG) & 0xf0); + for(i=1;i<5;i++) { + int dma = dmatab[i]; + if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510")) + continue; + + flags=claim_dma_lock(); + disable_dma(dma); + set_dma_mode(dma,DMA_MODE_CASCADE); + enable_dma(dma); + release_dma_lock(flags); + + ni65_init_lance(p,dev->dev_addr,0,0); /* trigger memory access */ + + flags=claim_dma_lock(); + disable_dma(dma); + free_dma(dma); + release_dma_lock(flags); + + if(readreg(CSR0) & CSR0_IDON) + break; + } + if(i == 5) { + printk("failed.\n"); + printk(KERN_ERR "%s: Can't detect DMA channel!\n", dev->name); + ni65_free_buffer(p); + release_region(ioaddr, cards[p->cardno].total_size); + return -EAGAIN; + } + dev->dma = dmatab[i]; + printk("DMA %d (autodetected), ",dev->dma); + } + else + printk("DMA %d (assigned), ",dev->dma); + + if(dev->irq < 2) + { + unsigned long irq_mask; + + ni65_init_lance(p,dev->dev_addr,0,0); + irq_mask = probe_irq_on(); + writereg(CSR0_INIT|CSR0_INEA,CSR0); /* trigger interrupt */ + msleep(20); + dev->irq = probe_irq_off(irq_mask); + if(!dev->irq) + { + printk("Failed to detect IRQ line!\n"); + ni65_free_buffer(p); + release_region(ioaddr, cards[p->cardno].total_size); + return -EAGAIN; + } + printk("IRQ %d (autodetected).\n",dev->irq); + } + else + printk("IRQ %d (assigned).\n",dev->irq); + } + + if(request_dma(dev->dma, cards[p->cardno].cardname ) != 0) + { + printk(KERN_ERR "%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma); + ni65_free_buffer(p); + release_region(ioaddr, cards[p->cardno].total_size); + return -EAGAIN; + } + + dev->base_addr = ioaddr; + dev->netdev_ops = &ni65_netdev_ops; + dev->watchdog_timeo = HZ/2; + + return 0; /* everything is OK */ +} + +/* + * set lance register and trigger init + */ +static void ni65_init_lance(struct priv *p,unsigned char *daddr,int filter,int mode) +{ + int i; + u32 pib; + + writereg(CSR0_CLRALL|CSR0_STOP,CSR0); + + for(i=0;i<6;i++) + p->ib.eaddr[i] = daddr[i]; + + for(i=0;i<8;i++) + p->ib.filter[i] = filter; + p->ib.mode = mode; + + p->ib.trp = (u32) isa_virt_to_bus(p->tmdhead) | TMDNUMMASK; + p->ib.rrp = (u32) isa_virt_to_bus(p->rmdhead) | RMDNUMMASK; + writereg(0,CSR3); /* busmaster/no word-swap */ + pib = (u32) isa_virt_to_bus(&p->ib); + writereg(pib & 0xffff,CSR1); + writereg(pib >> 16,CSR2); + + writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */ + + for(i=0;i<32;i++) + { + mdelay(4); + if(inw(PORT+L_DATAREG) & (CSR0_IDON | CSR0_MERR) ) + break; /* init ok ? */ + } +} + +/* + * allocate memory area and check the 16MB border + */ +static void *ni65_alloc_mem(struct net_device *dev,char *what,int size,int type) +{ + struct sk_buff *skb=NULL; + unsigned char *ptr; + void *ret; + + if(type) { + ret = skb = alloc_skb(2+16+size,GFP_KERNEL|GFP_DMA); + if(!skb) { + printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what); + return NULL; + } + skb_reserve(skb,2+16); + skb_put(skb,R_BUF_SIZE); /* grab the whole space .. (not necessary) */ + ptr = skb->data; + } + else { + ret = ptr = kmalloc(T_BUF_SIZE,GFP_KERNEL | GFP_DMA); + if(!ret) { + printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what); + return NULL; + } + } + if( (u32) virt_to_phys(ptr+size) > 0x1000000) { + printk(KERN_WARNING "%s: unable to allocate %s memory in lower 16MB!\n",dev->name,what); + if(type) + kfree_skb(skb); + else + kfree(ptr); + return NULL; + } + return ret; +} + +/* + * allocate all memory structures .. send/recv buffers etc ... + */ +static int ni65_alloc_buffer(struct net_device *dev) +{ + unsigned char *ptr; + struct priv *p; + int i; + + /* + * we need 8-aligned memory .. + */ + ptr = ni65_alloc_mem(dev,"BUFFER",sizeof(struct priv)+8,0); + if(!ptr) + return -ENOMEM; + + p = dev->ml_priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7); + memset((char *)p, 0, sizeof(struct priv)); + p->self = ptr; + + for(i=0;i<TMDNUM;i++) + { +#ifdef XMT_VIA_SKB + p->tmd_skb[i] = NULL; +#endif + p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0); + if(!p->tmdbounce[i]) { + ni65_free_buffer(p); + return -ENOMEM; + } + } + + for(i=0;i<RMDNUM;i++) + { +#ifdef RCV_VIA_SKB + p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1); + if(!p->recv_skb[i]) { + ni65_free_buffer(p); + return -ENOMEM; + } +#else + p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0); + if(!p->recvbounce[i]) { + ni65_free_buffer(p); + return -ENOMEM; + } +#endif + } + + return 0; /* everything is OK */ +} + +/* + * free buffers and private struct + */ +static void ni65_free_buffer(struct priv *p) +{ + int i; + + if(!p) + return; + + for(i=0;i<TMDNUM;i++) { + kfree(p->tmdbounce[i]); +#ifdef XMT_VIA_SKB + if(p->tmd_skb[i]) + dev_kfree_skb(p->tmd_skb[i]); +#endif + } + + for(i=0;i<RMDNUM;i++) + { +#ifdef RCV_VIA_SKB + if(p->recv_skb[i]) + dev_kfree_skb(p->recv_skb[i]); +#else + kfree(p->recvbounce[i]); +#endif + } + kfree(p->self); +} + + +/* + * stop and (re)start lance .. e.g after an error + */ +static void ni65_stop_start(struct net_device *dev,struct priv *p) +{ + int csr0 = CSR0_INEA; + + writedatareg(CSR0_STOP); + + if(debuglevel > 1) + printk(KERN_DEBUG "ni65_stop_start\n"); + + if(p->features & INIT_RING_BEFORE_START) { + int i; +#ifdef XMT_VIA_SKB + struct sk_buff *skb_save[TMDNUM]; +#endif + unsigned long buffer[TMDNUM]; + short blen[TMDNUM]; + + if(p->xmit_queued) { + while(1) { + if((p->tmdhead[p->tmdlast].u.s.status & XMIT_OWN)) + break; + p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1); + if(p->tmdlast == p->tmdnum) + break; + } + } + + for(i=0;i<TMDNUM;i++) { + struct tmd *tmdp = p->tmdhead + i; +#ifdef XMT_VIA_SKB + skb_save[i] = p->tmd_skb[i]; +#endif + buffer[i] = (u32) isa_bus_to_virt(tmdp->u.buffer); + blen[i] = tmdp->blen; + tmdp->u.s.status = 0x0; + } + + for(i=0;i<RMDNUM;i++) { + struct rmd *rmdp = p->rmdhead + i; + rmdp->u.s.status = RCV_OWN; + } + p->tmdnum = p->xmit_queued = 0; + writedatareg(CSR0_STRT | csr0); + + for(i=0;i<TMDNUM;i++) { + int num = (i + p->tmdlast) & (TMDNUM-1); + p->tmdhead[i].u.buffer = (u32) isa_virt_to_bus((char *)buffer[num]); /* status is part of buffer field */ + p->tmdhead[i].blen = blen[num]; + if(p->tmdhead[i].u.s.status & XMIT_OWN) { + p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1); + p->xmit_queued = 1; + writedatareg(CSR0_TDMD | CSR0_INEA | csr0); + } +#ifdef XMT_VIA_SKB + p->tmd_skb[i] = skb_save[num]; +#endif + } + p->rmdnum = p->tmdlast = 0; + if(!p->lock) + if (p->tmdnum || !p->xmit_queued) + netif_wake_queue(dev); + dev->trans_start = jiffies; /* prevent tx timeout */ + } + else + writedatareg(CSR0_STRT | csr0); +} + +/* + * init lance (write init-values .. init-buffers) (open-helper) + */ +static int ni65_lance_reinit(struct net_device *dev) +{ + int i; + struct priv *p = dev->ml_priv; + unsigned long flags; + + p->lock = 0; + p->xmit_queued = 0; + + flags=claim_dma_lock(); + disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */ + set_dma_mode(dev->dma,DMA_MODE_CASCADE); + enable_dma(dev->dma); + release_dma_lock(flags); + + outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */ + if( (i=readreg(CSR0) ) != 0x4) + { + printk(KERN_ERR "%s: can't RESET %s card: %04x\n",dev->name, + cards[p->cardno].cardname,(int) i); + flags=claim_dma_lock(); + disable_dma(dev->dma); + release_dma_lock(flags); + return 0; + } + + p->rmdnum = p->tmdnum = p->tmdlast = p->tmdbouncenum = 0; + for(i=0;i<TMDNUM;i++) + { + struct tmd *tmdp = p->tmdhead + i; +#ifdef XMT_VIA_SKB + if(p->tmd_skb[i]) { + dev_kfree_skb(p->tmd_skb[i]); + p->tmd_skb[i] = NULL; + } +#endif + tmdp->u.buffer = 0x0; + tmdp->u.s.status = XMIT_START | XMIT_END; + tmdp->blen = tmdp->status2 = 0; + } + + for(i=0;i<RMDNUM;i++) + { + struct rmd *rmdp = p->rmdhead + i; +#ifdef RCV_VIA_SKB + rmdp->u.buffer = (u32) isa_virt_to_bus(p->recv_skb[i]->data); +#else + rmdp->u.buffer = (u32) isa_virt_to_bus(p->recvbounce[i]); +#endif + rmdp->blen = -(R_BUF_SIZE-8); + rmdp->mlen = 0; + rmdp->u.s.status = RCV_OWN; + } + + if(dev->flags & IFF_PROMISC) + ni65_init_lance(p,dev->dev_addr,0x00,M_PROM); + else if (netdev_mc_count(dev) || dev->flags & IFF_ALLMULTI) + ni65_init_lance(p,dev->dev_addr,0xff,0x0); + else + ni65_init_lance(p,dev->dev_addr,0x00,0x00); + + /* + * ni65_set_lance_mem() sets L_ADDRREG to CSR0 + * NOW, WE WILL NEVER CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED + */ + + if(inw(PORT+L_DATAREG) & CSR0_IDON) { + ni65_set_performance(p); + /* init OK: start lance , enable interrupts */ + writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT); + return 1; /* ->OK */ + } + printk(KERN_ERR "%s: can't init lance, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG)); + flags=claim_dma_lock(); + disable_dma(dev->dma); + release_dma_lock(flags); + return 0; /* ->Error */ +} + +/* + * interrupt handler + */ +static irqreturn_t ni65_interrupt(int irq, void * dev_id) +{ + int csr0 = 0; + struct net_device *dev = dev_id; + struct priv *p; + int bcnt = 32; + + p = dev->ml_priv; + + spin_lock(&p->ring_lock); + + while(--bcnt) { + csr0 = inw(PORT+L_DATAREG); + +#if 0 + writedatareg( (csr0 & CSR0_CLRALL) ); /* ack interrupts, disable int. */ +#else + writedatareg( (csr0 & CSR0_CLRALL) | CSR0_INEA ); /* ack interrupts, interrupts enabled */ +#endif + + if(!(csr0 & (CSR0_ERR | CSR0_RINT | CSR0_TINT))) + break; + + if(csr0 & CSR0_RINT) /* RECV-int? */ + ni65_recv_intr(dev,csr0); + if(csr0 & CSR0_TINT) /* XMIT-int? */ + ni65_xmit_intr(dev,csr0); + + if(csr0 & CSR0_ERR) + { + if(debuglevel > 1) + printk(KERN_ERR "%s: general error: %04x.\n",dev->name,csr0); + if(csr0 & CSR0_BABL) + dev->stats.tx_errors++; + if(csr0 & CSR0_MISS) { + int i; + for(i=0;i<RMDNUM;i++) + printk("%02x ",p->rmdhead[i].u.s.status); + printk("\n"); + dev->stats.rx_errors++; + } + if(csr0 & CSR0_MERR) { + if(debuglevel > 1) + printk(KERN_ERR "%s: Ooops .. memory error: %04x.\n",dev->name,csr0); + ni65_stop_start(dev,p); + } + } + } + +#ifdef RCV_PARANOIA_CHECK +{ + int j; + for(j=0;j<RMDNUM;j++) + { + int i, num2; + for(i=RMDNUM-1;i>0;i--) { + num2 = (p->rmdnum + i) & (RMDNUM-1); + if(!(p->rmdhead[num2].u.s.status & RCV_OWN)) + break; + } + + if(i) { + int k, num1; + for(k=0;k<RMDNUM;k++) { + num1 = (p->rmdnum + k) & (RMDNUM-1); + if(!(p->rmdhead[num1].u.s.status & RCV_OWN)) + break; + } + if(!k) + break; + + if(debuglevel > 0) + { + char buf[256],*buf1; + buf1 = buf; + for(k=0;k<RMDNUM;k++) { + sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status)); /* & RCV_OWN) ); */ + buf1 += 3; + } + *buf1 = 0; + printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev->name,p->rmdnum,i,buf); + } + + p->rmdnum = num1; + ni65_recv_intr(dev,csr0); + if((p->rmdhead[num2].u.s.status & RCV_OWN)) + break; /* ok, we are 'in sync' again */ + } + else + break; + } +} +#endif + + if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) { + printk(KERN_DEBUG "%s: RX or TX was offline -> restart\n",dev->name); + ni65_stop_start(dev,p); + } + else + writedatareg(CSR0_INEA); + + spin_unlock(&p->ring_lock); + return IRQ_HANDLED; +} + +/* + * We have received an Xmit-Interrupt .. + * send a new packet if necessary + */ +static void ni65_xmit_intr(struct net_device *dev,int csr0) +{ + struct priv *p = dev->ml_priv; + + while(p->xmit_queued) + { + struct tmd *tmdp = p->tmdhead + p->tmdlast; + int tmdstat = tmdp->u.s.status; + + if(tmdstat & XMIT_OWN) + break; + + if(tmdstat & XMIT_ERR) + { +#if 0 + if(tmdp->status2 & XMIT_TDRMASK && debuglevel > 3) + printk(KERN_ERR "%s: tdr-problems (e.g. no resistor)\n",dev->name); +#endif + /* checking some errors */ + if(tmdp->status2 & XMIT_RTRY) + dev->stats.tx_aborted_errors++; + if(tmdp->status2 & XMIT_LCAR) + dev->stats.tx_carrier_errors++; + if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) { + /* this stops the xmitter */ + dev->stats.tx_fifo_errors++; + if(debuglevel > 0) + printk(KERN_ERR "%s: Xmit FIFO/BUFF error\n",dev->name); + if(p->features & INIT_RING_BEFORE_START) { + tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; /* test: resend this frame */ + ni65_stop_start(dev,p); + break; /* no more Xmit processing .. */ + } + else + ni65_stop_start(dev,p); + } + if(debuglevel > 2) + printk(KERN_ERR "%s: xmit-error: %04x %02x-%04x\n",dev->name,csr0,(int) tmdstat,(int) tmdp->status2); + if(!(csr0 & CSR0_BABL)) /* don't count errors twice */ + dev->stats.tx_errors++; + tmdp->status2 = 0; + } + else { + dev->stats.tx_bytes -= (short)(tmdp->blen); + dev->stats.tx_packets++; + } + +#ifdef XMT_VIA_SKB + if(p->tmd_skb[p->tmdlast]) { + dev_kfree_skb_irq(p->tmd_skb[p->tmdlast]); + p->tmd_skb[p->tmdlast] = NULL; + } +#endif + + p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1); + if(p->tmdlast == p->tmdnum) + p->xmit_queued = 0; + } + netif_wake_queue(dev); +} + +/* + * We have received a packet + */ +static void ni65_recv_intr(struct net_device *dev,int csr0) +{ + struct rmd *rmdp; + int rmdstat,len; + int cnt=0; + struct priv *p = dev->ml_priv; + + rmdp = p->rmdhead + p->rmdnum; + while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN)) + { + cnt++; + if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) ) /* error or oversized? */ + { + if(!(rmdstat & RCV_ERR)) { + if(rmdstat & RCV_START) + { + dev->stats.rx_length_errors++; + printk(KERN_ERR "%s: recv, packet too long: %d\n",dev->name,rmdp->mlen & 0x0fff); + } + } + else { + if(debuglevel > 2) + printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04x\n", + dev->name,(int) rmdstat,csr0,(int) inw(PORT+L_DATAREG) ); + if(rmdstat & RCV_FRAM) + dev->stats.rx_frame_errors++; + if(rmdstat & RCV_OFLO) + dev->stats.rx_over_errors++; + if(rmdstat & RCV_CRC) + dev->stats.rx_crc_errors++; + if(rmdstat & RCV_BUF_ERR) + dev->stats.rx_fifo_errors++; + } + if(!(csr0 & CSR0_MISS)) /* don't count errors twice */ + dev->stats.rx_errors++; + } + else if( (len = (rmdp->mlen & 0x0fff) - 4) >= 60) + { +#ifdef RCV_VIA_SKB + struct sk_buff *skb = alloc_skb(R_BUF_SIZE+2+16,GFP_ATOMIC); + if (skb) + skb_reserve(skb,16); +#else + struct sk_buff *skb = dev_alloc_skb(len+2); +#endif + if(skb) + { + skb_reserve(skb,2); +#ifdef RCV_VIA_SKB + if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) { + skb_put(skb,len); + skb_copy_to_linear_data(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len); + } + else { + struct sk_buff *skb1 = p->recv_skb[p->rmdnum]; + skb_put(skb,R_BUF_SIZE); + p->recv_skb[p->rmdnum] = skb; + rmdp->u.buffer = (u32) isa_virt_to_bus(skb->data); + skb = skb1; + skb_trim(skb,len); + } +#else + skb_put(skb,len); + skb_copy_to_linear_data(skb, (unsigned char *) p->recvbounce[p->rmdnum],len); +#endif + dev->stats.rx_packets++; + dev->stats.rx_bytes += len; + skb->protocol=eth_type_trans(skb,dev); + netif_rx(skb); + } + else + { + printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name); + dev->stats.rx_dropped++; + } + } + else { + printk(KERN_INFO "%s: received runt packet\n",dev->name); + dev->stats.rx_errors++; + } + rmdp->blen = -(R_BUF_SIZE-8); + rmdp->mlen = 0; + rmdp->u.s.status = RCV_OWN; /* change owner */ + p->rmdnum = (p->rmdnum + 1) & (RMDNUM-1); + rmdp = p->rmdhead + p->rmdnum; + } +} + +/* + * kick xmitter .. + */ + +static void ni65_timeout(struct net_device *dev) +{ + int i; + struct priv *p = dev->ml_priv; + + printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name); + for(i=0;i<TMDNUM;i++) + printk("%02x ",p->tmdhead[i].u.s.status); + printk("\n"); + ni65_lance_reinit(dev); + dev->trans_start = jiffies; /* prevent tx timeout */ + netif_wake_queue(dev); +} + +/* + * Send a packet + */ + +static netdev_tx_t ni65_send_packet(struct sk_buff *skb, + struct net_device *dev) +{ + struct priv *p = dev->ml_priv; + + netif_stop_queue(dev); + + if (test_and_set_bit(0, (void*)&p->lock)) { + printk(KERN_ERR "%s: Queue was locked.\n", dev->name); + return NETDEV_TX_BUSY; + } + + { + short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; + struct tmd *tmdp; + unsigned long flags; + +#ifdef XMT_VIA_SKB + if( (unsigned long) (skb->data + skb->len) > 0x1000000) { +#endif + + skb_copy_from_linear_data(skb, p->tmdbounce[p->tmdbouncenum], + skb->len > T_BUF_SIZE ? T_BUF_SIZE : + skb->len); + if (len > skb->len) + memset((char *)p->tmdbounce[p->tmdbouncenum]+skb->len, 0, len-skb->len); + dev_kfree_skb (skb); + + spin_lock_irqsave(&p->ring_lock, flags); + tmdp = p->tmdhead + p->tmdnum; + tmdp->u.buffer = (u32) isa_virt_to_bus(p->tmdbounce[p->tmdbouncenum]); + p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1); + +#ifdef XMT_VIA_SKB + } + else { + spin_lock_irqsave(&p->ring_lock, flags); + + tmdp = p->tmdhead + p->tmdnum; + tmdp->u.buffer = (u32) isa_virt_to_bus(skb->data); + p->tmd_skb[p->tmdnum] = skb; + } +#endif + tmdp->blen = -len; + + tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; + writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */ + + p->xmit_queued = 1; + p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1); + + if(p->tmdnum != p->tmdlast) + netif_wake_queue(dev); + + p->lock = 0; + + spin_unlock_irqrestore(&p->ring_lock, flags); + } + + return NETDEV_TX_OK; +} + +static void set_multicast_list(struct net_device *dev) +{ + if(!ni65_lance_reinit(dev)) + printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name); + netif_wake_queue(dev); +} + +#ifdef MODULE +static struct net_device *dev_ni65; + +module_param(irq, int, 0); +module_param(io, int, 0); +module_param(dma, int, 0); +MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)"); +MODULE_PARM_DESC(io, "ni6510 I/O base address"); +MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)"); + +int __init init_module(void) +{ + dev_ni65 = ni65_probe(-1); + return IS_ERR(dev_ni65) ? PTR_ERR(dev_ni65) : 0; +} + +void __exit cleanup_module(void) +{ + unregister_netdev(dev_ni65); + cleanup_card(dev_ni65); + free_netdev(dev_ni65); +} +#endif /* MODULE */ + +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ethernet/amd/ni65.h b/drivers/net/ethernet/amd/ni65.h new file mode 100644 index 000000000000..e6217e35edf0 --- /dev/null +++ b/drivers/net/ethernet/amd/ni65.h @@ -0,0 +1,121 @@ +/* am7990 (lance) definitions + * + * This is an extension to the Linux operating system, and is covered by + * same GNU General Public License that covers that work. + * + * Michael Hipp + * email: mhipp@student.uni-tuebingen.de + * + * sources: (mail me or ask archie if you need them) + * crynwr-packet-driver + */ + +/* + * Control and Status Register 0 (CSR0) bit definitions + * (R=Readable) (W=Writeable) (S=Set on write) (C-Clear on write) + * + */ + +#define CSR0_ERR 0x8000 /* Error summary (R) */ +#define CSR0_BABL 0x4000 /* Babble transmitter timeout error (RC) */ +#define CSR0_CERR 0x2000 /* Collision Error (RC) */ +#define CSR0_MISS 0x1000 /* Missed packet (RC) */ +#define CSR0_MERR 0x0800 /* Memory Error (RC) */ +#define CSR0_RINT 0x0400 /* Receiver Interrupt (RC) */ +#define CSR0_TINT 0x0200 /* Transmit Interrupt (RC) */ +#define CSR0_IDON 0x0100 /* Initialization Done (RC) */ +#define CSR0_INTR 0x0080 /* Interrupt Flag (R) */ +#define CSR0_INEA 0x0040 /* Interrupt Enable (RW) */ +#define CSR0_RXON 0x0020 /* Receiver on (R) */ +#define CSR0_TXON 0x0010 /* Transmitter on (R) */ +#define CSR0_TDMD 0x0008 /* Transmit Demand (RS) */ +#define CSR0_STOP 0x0004 /* Stop (RS) */ +#define CSR0_STRT 0x0002 /* Start (RS) */ +#define CSR0_INIT 0x0001 /* Initialize (RS) */ + +#define CSR0_CLRALL 0x7f00 /* mask for all clearable bits */ +/* + * Initialization Block Mode operation Bit Definitions. + */ + +#define M_PROM 0x8000 /* Promiscuous Mode */ +#define M_INTL 0x0040 /* Internal Loopback */ +#define M_DRTY 0x0020 /* Disable Retry */ +#define M_COLL 0x0010 /* Force Collision */ +#define M_DTCR 0x0008 /* Disable Transmit CRC) */ +#define M_LOOP 0x0004 /* Loopback */ +#define M_DTX 0x0002 /* Disable the Transmitter */ +#define M_DRX 0x0001 /* Disable the Receiver */ + + +/* + * Receive message descriptor bit definitions. + */ + +#define RCV_OWN 0x80 /* owner bit 0 = host, 1 = lance */ +#define RCV_ERR 0x40 /* Error Summary */ +#define RCV_FRAM 0x20 /* Framing Error */ +#define RCV_OFLO 0x10 /* Overflow Error */ +#define RCV_CRC 0x08 /* CRC Error */ +#define RCV_BUF_ERR 0x04 /* Buffer Error */ +#define RCV_START 0x02 /* Start of Packet */ +#define RCV_END 0x01 /* End of Packet */ + + +/* + * Transmit message descriptor bit definitions. + */ + +#define XMIT_OWN 0x80 /* owner bit 0 = host, 1 = lance */ +#define XMIT_ERR 0x40 /* Error Summary */ +#define XMIT_RETRY 0x10 /* more the 1 retry needed to Xmit */ +#define XMIT_1_RETRY 0x08 /* one retry needed to Xmit */ +#define XMIT_DEF 0x04 /* Deferred */ +#define XMIT_START 0x02 /* Start of Packet */ +#define XMIT_END 0x01 /* End of Packet */ + +/* + * transmit status (2) (valid if XMIT_ERR == 1) + */ + +#define XMIT_TDRMASK 0x03ff /* time-domain-reflectometer-value */ +#define XMIT_RTRY 0x0400 /* Failed after 16 retransmissions */ +#define XMIT_LCAR 0x0800 /* Loss of Carrier */ +#define XMIT_LCOL 0x1000 /* Late collision */ +#define XMIT_RESERV 0x2000 /* Reserved */ +#define XMIT_UFLO 0x4000 /* Underflow (late memory) */ +#define XMIT_BUFF 0x8000 /* Buffering error (no ENP) */ + +struct init_block { + unsigned short mode; + unsigned char eaddr[6]; + unsigned char filter[8]; + /* bit 29-31: number of rmd's (power of 2) */ + u32 rrp; /* receive ring pointer (align 8) */ + /* bit 29-31: number of tmd's (power of 2) */ + u32 trp; /* transmit ring pointer (align 8) */ +}; + +struct rmd { /* Receive Message Descriptor */ + union { + volatile u32 buffer; + struct { + volatile unsigned char dummy[3]; + volatile unsigned char status; + } s; + } u; + volatile short blen; + volatile unsigned short mlen; +}; + +struct tmd { + union { + volatile u32 buffer; + struct { + volatile unsigned char dummy[3]; + volatile unsigned char status; + } s; + } u; + volatile unsigned short blen; + volatile unsigned short status2; +}; diff --git a/drivers/net/ethernet/amd/nmclan_cs.c b/drivers/net/ethernet/amd/nmclan_cs.c new file mode 100644 index 000000000000..3accd5d21b08 --- /dev/null +++ b/drivers/net/ethernet/amd/nmclan_cs.c @@ -0,0 +1,1525 @@ +/* ---------------------------------------------------------------------------- +Linux PCMCIA ethernet adapter driver for the New Media Ethernet LAN. + nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao + + The Ethernet LAN uses the Advanced Micro Devices (AMD) Am79C940 Media + Access Controller for Ethernet (MACE). It is essentially the Am2150 + PCMCIA Ethernet card contained in the Am2150 Demo Kit. + +Written by Roger C. Pao <rpao@paonet.org> + Copyright 1995 Roger C. Pao + Linux 2.5 cleanups Copyright Red Hat 2003 + + This software may be used and distributed according to the terms of + the GNU General Public License. + +Ported to Linux 1.3.* network driver environment by + Matti Aarnio <mea@utu.fi> + +References + + Am2150 Technical Reference Manual, Revision 1.0, August 17, 1993 + Am79C940 (MACE) Data Sheet, 1994 + Am79C90 (C-LANCE) Data Sheet, 1994 + Linux PCMCIA Programmer's Guide v1.17 + /usr/src/linux/net/inet/dev.c, Linux kernel 1.2.8 + + Eric Mears, New Media Corporation + Tom Pollard, New Media Corporation + Dean Siasoyco, New Media Corporation + Ken Lesniak, Silicon Graphics, Inc. <lesniak@boston.sgi.com> + Donald Becker <becker@scyld.com> + David Hinds <dahinds@users.sourceforge.net> + + The Linux client driver is based on the 3c589_cs.c client driver by + David Hinds. + + The Linux network driver outline is based on the 3c589_cs.c driver, + the 8390.c driver, and the example skeleton.c kernel code, which are + by Donald Becker. + + The Am2150 network driver hardware interface code is based on the + OS/9000 driver for the New Media Ethernet LAN by Eric Mears. + + Special thanks for testing and help in debugging this driver goes + to Ken Lesniak. + +------------------------------------------------------------------------------- +Driver Notes and Issues +------------------------------------------------------------------------------- + +1. Developed on a Dell 320SLi + PCMCIA Card Services 2.6.2 + Linux dell 1.2.10 #1 Thu Jun 29 20:23:41 PDT 1995 i386 + +2. rc.pcmcia may require loading pcmcia_core with io_speed=300: + 'insmod pcmcia_core.o io_speed=300'. + This will avoid problems with fast systems which causes rx_framecnt + to return random values. + +3. If hot extraction does not work for you, use 'ifconfig eth0 down' + before extraction. + +4. There is a bad slow-down problem in this driver. + +5. Future: Multicast processing. In the meantime, do _not_ compile your + kernel with multicast ip enabled. + +------------------------------------------------------------------------------- +History +------------------------------------------------------------------------------- +Log: nmclan_cs.c,v + * 2.5.75-ac1 2003/07/11 Alan Cox <alan@lxorguk.ukuu.org.uk> + * Fixed hang on card eject as we probe it + * Cleaned up to use new style locking. + * + * Revision 0.16 1995/07/01 06:42:17 rpao + * Bug fix: nmclan_reset() called CardServices incorrectly. + * + * Revision 0.15 1995/05/24 08:09:47 rpao + * Re-implement MULTI_TX dev->tbusy handling. + * + * Revision 0.14 1995/05/23 03:19:30 rpao + * Added, in nmclan_config(), "tuple.Attributes = 0;". + * Modified MACE ID check to ignore chip revision level. + * Avoid tx_free_frames race condition between _start_xmit and _interrupt. + * + * Revision 0.13 1995/05/18 05:56:34 rpao + * Statistics changes. + * Bug fix: nmclan_reset did not enable TX and RX: call restore_multicast_list. + * Bug fix: mace_interrupt checks ~MACE_IMR_DEFAULT. Fixes driver lockup. + * + * Revision 0.12 1995/05/14 00:12:23 rpao + * Statistics overhaul. + * + +95/05/13 rpao V0.10a + Bug fix: MACE statistics counters used wrong I/O ports. + Bug fix: mace_interrupt() needed to allow statistics to be + processed without RX or TX interrupts pending. +95/05/11 rpao V0.10 + Multiple transmit request processing. + Modified statistics to use MACE counters where possible. +95/05/10 rpao V0.09 Bug fix: Must use IO_DATA_PATH_WIDTH_AUTO. + *Released +95/05/10 rpao V0.08 + Bug fix: Make all non-exported functions private by using + static keyword. + Bug fix: Test IntrCnt _before_ reading MACE_IR. +95/05/10 rpao V0.07 Statistics. +95/05/09 rpao V0.06 Fix rx_framecnt problem by addition of PCIC wait states. + +---------------------------------------------------------------------------- */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#define DRV_NAME "nmclan_cs" +#define DRV_VERSION "0.16" + + +/* ---------------------------------------------------------------------------- +Conditional Compilation Options +---------------------------------------------------------------------------- */ + +#define MULTI_TX 0 +#define RESET_ON_TIMEOUT 1 +#define TX_INTERRUPTABLE 1 +#define RESET_XILINX 0 + +/* ---------------------------------------------------------------------------- +Include Files +---------------------------------------------------------------------------- */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/ptrace.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/interrupt.h> +#include <linux/in.h> +#include <linux/delay.h> +#include <linux/ethtool.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/if_arp.h> +#include <linux/ioport.h> +#include <linux/bitops.h> + +#include <pcmcia/cisreg.h> +#include <pcmcia/cistpl.h> +#include <pcmcia/ds.h> + +#include <asm/uaccess.h> +#include <asm/io.h> +#include <asm/system.h> + +/* ---------------------------------------------------------------------------- +Defines +---------------------------------------------------------------------------- */ + +#define ETHER_ADDR_LEN ETH_ALEN + /* 6 bytes in an Ethernet Address */ +#define MACE_LADRF_LEN 8 + /* 8 bytes in Logical Address Filter */ + +/* Loop Control Defines */ +#define MACE_MAX_IR_ITERATIONS 10 +#define MACE_MAX_RX_ITERATIONS 12 + /* + TBD: Dean brought this up, and I assumed the hardware would + handle it: + + If MACE_MAX_RX_ITERATIONS is > 1, rx_framecnt may still be + non-zero when the isr exits. We may not get another interrupt + to process the remaining packets for some time. + */ + +/* +The Am2150 has a Xilinx XC3042 field programmable gate array (FPGA) +which manages the interface between the MACE and the PCMCIA bus. It +also includes buffer management for the 32K x 8 SRAM to control up to +four transmit and 12 receive frames at a time. +*/ +#define AM2150_MAX_TX_FRAMES 4 +#define AM2150_MAX_RX_FRAMES 12 + +/* Am2150 Ethernet Card I/O Mapping */ +#define AM2150_RCV 0x00 +#define AM2150_XMT 0x04 +#define AM2150_XMT_SKIP 0x09 +#define AM2150_RCV_NEXT 0x0A +#define AM2150_RCV_FRAME_COUNT 0x0B +#define AM2150_MACE_BANK 0x0C +#define AM2150_MACE_BASE 0x10 + +/* MACE Registers */ +#define MACE_RCVFIFO 0 +#define MACE_XMTFIFO 1 +#define MACE_XMTFC 2 +#define MACE_XMTFS 3 +#define MACE_XMTRC 4 +#define MACE_RCVFC 5 +#define MACE_RCVFS 6 +#define MACE_FIFOFC 7 +#define MACE_IR 8 +#define MACE_IMR 9 +#define MACE_PR 10 +#define MACE_BIUCC 11 +#define MACE_FIFOCC 12 +#define MACE_MACCC 13 +#define MACE_PLSCC 14 +#define MACE_PHYCC 15 +#define MACE_CHIPIDL 16 +#define MACE_CHIPIDH 17 +#define MACE_IAC 18 +/* Reserved */ +#define MACE_LADRF 20 +#define MACE_PADR 21 +/* Reserved */ +/* Reserved */ +#define MACE_MPC 24 +/* Reserved */ +#define MACE_RNTPC 26 +#define MACE_RCVCC 27 +/* Reserved */ +#define MACE_UTR 29 +#define MACE_RTR1 30 +#define MACE_RTR2 31 + +/* MACE Bit Masks */ +#define MACE_XMTRC_EXDEF 0x80 +#define MACE_XMTRC_XMTRC 0x0F + +#define MACE_XMTFS_XMTSV 0x80 +#define MACE_XMTFS_UFLO 0x40 +#define MACE_XMTFS_LCOL 0x20 +#define MACE_XMTFS_MORE 0x10 +#define MACE_XMTFS_ONE 0x08 +#define MACE_XMTFS_DEFER 0x04 +#define MACE_XMTFS_LCAR 0x02 +#define MACE_XMTFS_RTRY 0x01 + +#define MACE_RCVFS_RCVSTS 0xF000 +#define MACE_RCVFS_OFLO 0x8000 +#define MACE_RCVFS_CLSN 0x4000 +#define MACE_RCVFS_FRAM 0x2000 +#define MACE_RCVFS_FCS 0x1000 + +#define MACE_FIFOFC_RCVFC 0xF0 +#define MACE_FIFOFC_XMTFC 0x0F + +#define MACE_IR_JAB 0x80 +#define MACE_IR_BABL 0x40 +#define MACE_IR_CERR 0x20 +#define MACE_IR_RCVCCO 0x10 +#define MACE_IR_RNTPCO 0x08 +#define MACE_IR_MPCO 0x04 +#define MACE_IR_RCVINT 0x02 +#define MACE_IR_XMTINT 0x01 + +#define MACE_MACCC_PROM 0x80 +#define MACE_MACCC_DXMT2PD 0x40 +#define MACE_MACCC_EMBA 0x20 +#define MACE_MACCC_RESERVED 0x10 +#define MACE_MACCC_DRCVPA 0x08 +#define MACE_MACCC_DRCVBC 0x04 +#define MACE_MACCC_ENXMT 0x02 +#define MACE_MACCC_ENRCV 0x01 + +#define MACE_PHYCC_LNKFL 0x80 +#define MACE_PHYCC_DLNKTST 0x40 +#define MACE_PHYCC_REVPOL 0x20 +#define MACE_PHYCC_DAPC 0x10 +#define MACE_PHYCC_LRT 0x08 +#define MACE_PHYCC_ASEL 0x04 +#define MACE_PHYCC_RWAKE 0x02 +#define MACE_PHYCC_AWAKE 0x01 + +#define MACE_IAC_ADDRCHG 0x80 +#define MACE_IAC_PHYADDR 0x04 +#define MACE_IAC_LOGADDR 0x02 + +#define MACE_UTR_RTRE 0x80 +#define MACE_UTR_RTRD 0x40 +#define MACE_UTR_RPA 0x20 +#define MACE_UTR_FCOLL 0x10 +#define MACE_UTR_RCVFCSE 0x08 +#define MACE_UTR_LOOP_INCL_MENDEC 0x06 +#define MACE_UTR_LOOP_NO_MENDEC 0x04 +#define MACE_UTR_LOOP_EXTERNAL 0x02 +#define MACE_UTR_LOOP_NONE 0x00 +#define MACE_UTR_RESERVED 0x01 + +/* Switch MACE register bank (only 0 and 1 are valid) */ +#define MACEBANK(win_num) outb((win_num), ioaddr + AM2150_MACE_BANK) + +#define MACE_IMR_DEFAULT \ + (0xFF - \ + ( \ + MACE_IR_CERR | \ + MACE_IR_RCVCCO | \ + MACE_IR_RNTPCO | \ + MACE_IR_MPCO | \ + MACE_IR_RCVINT | \ + MACE_IR_XMTINT \ + ) \ + ) +#undef MACE_IMR_DEFAULT +#define MACE_IMR_DEFAULT 0x00 /* New statistics handling: grab everything */ + +#define TX_TIMEOUT ((400*HZ)/1000) + +/* ---------------------------------------------------------------------------- +Type Definitions +---------------------------------------------------------------------------- */ + +typedef struct _mace_statistics { + /* MACE_XMTFS */ + int xmtsv; + int uflo; + int lcol; + int more; + int one; + int defer; + int lcar; + int rtry; + + /* MACE_XMTRC */ + int exdef; + int xmtrc; + + /* RFS1--Receive Status (RCVSTS) */ + int oflo; + int clsn; + int fram; + int fcs; + + /* RFS2--Runt Packet Count (RNTPC) */ + int rfs_rntpc; + + /* RFS3--Receive Collision Count (RCVCC) */ + int rfs_rcvcc; + + /* MACE_IR */ + int jab; + int babl; + int cerr; + int rcvcco; + int rntpco; + int mpco; + + /* MACE_MPC */ + int mpc; + + /* MACE_RNTPC */ + int rntpc; + + /* MACE_RCVCC */ + int rcvcc; +} mace_statistics; + +typedef struct _mace_private { + struct pcmcia_device *p_dev; + struct net_device_stats linux_stats; /* Linux statistics counters */ + mace_statistics mace_stats; /* MACE chip statistics counters */ + + /* restore_multicast_list() state variables */ + int multicast_ladrf[MACE_LADRF_LEN]; /* Logical address filter */ + int multicast_num_addrs; + + char tx_free_frames; /* Number of free transmit frame buffers */ + char tx_irq_disabled; /* MACE TX interrupt disabled */ + + spinlock_t bank_lock; /* Must be held if you step off bank 0 */ +} mace_private; + +/* ---------------------------------------------------------------------------- +Private Global Variables +---------------------------------------------------------------------------- */ + +static const char *if_names[]={ + "Auto", "10baseT", "BNC", +}; + +/* ---------------------------------------------------------------------------- +Parameters + These are the parameters that can be set during loading with + 'insmod'. +---------------------------------------------------------------------------- */ + +MODULE_DESCRIPTION("New Media PCMCIA ethernet driver"); +MODULE_LICENSE("GPL"); + +#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) + +/* 0=auto, 1=10baseT, 2 = 10base2, default=auto */ +INT_MODULE_PARM(if_port, 0); + + +/* ---------------------------------------------------------------------------- +Function Prototypes +---------------------------------------------------------------------------- */ + +static int nmclan_config(struct pcmcia_device *link); +static void nmclan_release(struct pcmcia_device *link); + +static void nmclan_reset(struct net_device *dev); +static int mace_config(struct net_device *dev, struct ifmap *map); +static int mace_open(struct net_device *dev); +static int mace_close(struct net_device *dev); +static netdev_tx_t mace_start_xmit(struct sk_buff *skb, + struct net_device *dev); +static void mace_tx_timeout(struct net_device *dev); +static irqreturn_t mace_interrupt(int irq, void *dev_id); +static struct net_device_stats *mace_get_stats(struct net_device *dev); +static int mace_rx(struct net_device *dev, unsigned char RxCnt); +static void restore_multicast_list(struct net_device *dev); +static void set_multicast_list(struct net_device *dev); +static const struct ethtool_ops netdev_ethtool_ops; + + +static void nmclan_detach(struct pcmcia_device *p_dev); + +static const struct net_device_ops mace_netdev_ops = { + .ndo_open = mace_open, + .ndo_stop = mace_close, + .ndo_start_xmit = mace_start_xmit, + .ndo_tx_timeout = mace_tx_timeout, + .ndo_set_config = mace_config, + .ndo_get_stats = mace_get_stats, + .ndo_set_rx_mode = set_multicast_list, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, +}; + +static int nmclan_probe(struct pcmcia_device *link) +{ + mace_private *lp; + struct net_device *dev; + + dev_dbg(&link->dev, "nmclan_attach()\n"); + + /* Create new ethernet device */ + dev = alloc_etherdev(sizeof(mace_private)); + if (!dev) + return -ENOMEM; + lp = netdev_priv(dev); + lp->p_dev = link; + link->priv = dev; + + spin_lock_init(&lp->bank_lock); + link->resource[0]->end = 32; + link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; + link->config_flags |= CONF_ENABLE_IRQ; + link->config_index = 1; + link->config_regs = PRESENT_OPTION; + + lp->tx_free_frames=AM2150_MAX_TX_FRAMES; + + dev->netdev_ops = &mace_netdev_ops; + SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); + dev->watchdog_timeo = TX_TIMEOUT; + + return nmclan_config(link); +} /* nmclan_attach */ + +static void nmclan_detach(struct pcmcia_device *link) +{ + struct net_device *dev = link->priv; + + dev_dbg(&link->dev, "nmclan_detach\n"); + + unregister_netdev(dev); + + nmclan_release(link); + + free_netdev(dev); +} /* nmclan_detach */ + +/* ---------------------------------------------------------------------------- +mace_read + Reads a MACE register. This is bank independent; however, the + caller must ensure that this call is not interruptable. We are + assuming that during normal operation, the MACE is always in + bank 0. +---------------------------------------------------------------------------- */ +static int mace_read(mace_private *lp, unsigned int ioaddr, int reg) +{ + int data = 0xFF; + unsigned long flags; + + switch (reg >> 4) { + case 0: /* register 0-15 */ + data = inb(ioaddr + AM2150_MACE_BASE + reg); + break; + case 1: /* register 16-31 */ + spin_lock_irqsave(&lp->bank_lock, flags); + MACEBANK(1); + data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F)); + MACEBANK(0); + spin_unlock_irqrestore(&lp->bank_lock, flags); + break; + } + return data & 0xFF; +} /* mace_read */ + +/* ---------------------------------------------------------------------------- +mace_write + Writes to a MACE register. This is bank independent; however, + the caller must ensure that this call is not interruptable. We + are assuming that during normal operation, the MACE is always in + bank 0. +---------------------------------------------------------------------------- */ +static void mace_write(mace_private *lp, unsigned int ioaddr, int reg, + int data) +{ + unsigned long flags; + + switch (reg >> 4) { + case 0: /* register 0-15 */ + outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + reg); + break; + case 1: /* register 16-31 */ + spin_lock_irqsave(&lp->bank_lock, flags); + MACEBANK(1); + outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F)); + MACEBANK(0); + spin_unlock_irqrestore(&lp->bank_lock, flags); + break; + } +} /* mace_write */ + +/* ---------------------------------------------------------------------------- +mace_init + Resets the MACE chip. +---------------------------------------------------------------------------- */ +static int mace_init(mace_private *lp, unsigned int ioaddr, char *enet_addr) +{ + int i; + int ct = 0; + + /* MACE Software reset */ + mace_write(lp, ioaddr, MACE_BIUCC, 1); + while (mace_read(lp, ioaddr, MACE_BIUCC) & 0x01) { + /* Wait for reset bit to be cleared automatically after <= 200ns */; + if(++ct > 500) + { + pr_err("reset failed, card removed?\n"); + return -1; + } + udelay(1); + } + mace_write(lp, ioaddr, MACE_BIUCC, 0); + + /* The Am2150 requires that the MACE FIFOs operate in burst mode. */ + mace_write(lp, ioaddr, MACE_FIFOCC, 0x0F); + + mace_write(lp,ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */ + mace_write(lp, ioaddr, MACE_IMR, 0xFF); /* Disable all interrupts until _open */ + + /* + * Bit 2-1 PORTSEL[1-0] Port Select. + * 00 AUI/10Base-2 + * 01 10Base-T + * 10 DAI Port (reserved in Am2150) + * 11 GPSI + * For this card, only the first two are valid. + * So, PLSCC should be set to + * 0x00 for 10Base-2 + * 0x02 for 10Base-T + * Or just set ASEL in PHYCC below! + */ + switch (if_port) { + case 1: + mace_write(lp, ioaddr, MACE_PLSCC, 0x02); + break; + case 2: + mace_write(lp, ioaddr, MACE_PLSCC, 0x00); + break; + default: + mace_write(lp, ioaddr, MACE_PHYCC, /* ASEL */ 4); + /* ASEL Auto Select. When set, the PORTSEL[1-0] bits are overridden, + and the MACE device will automatically select the operating media + interface port. */ + break; + } + + mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR); + /* Poll ADDRCHG bit */ + ct = 0; + while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG) + { + if(++ ct > 500) + { + pr_err("ADDRCHG timeout, card removed?\n"); + return -1; + } + } + /* Set PADR register */ + for (i = 0; i < ETHER_ADDR_LEN; i++) + mace_write(lp, ioaddr, MACE_PADR, enet_addr[i]); + + /* MAC Configuration Control Register should be written last */ + /* Let set_multicast_list set this. */ + /* mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */ + mace_write(lp, ioaddr, MACE_MACCC, 0x00); + return 0; +} /* mace_init */ + +static int nmclan_config(struct pcmcia_device *link) +{ + struct net_device *dev = link->priv; + mace_private *lp = netdev_priv(dev); + u8 *buf; + size_t len; + int i, ret; + unsigned int ioaddr; + + dev_dbg(&link->dev, "nmclan_config\n"); + + link->io_lines = 5; + ret = pcmcia_request_io(link); + if (ret) + goto failed; + ret = pcmcia_request_exclusive_irq(link, mace_interrupt); + if (ret) + goto failed; + ret = pcmcia_enable_device(link); + if (ret) + goto failed; + + dev->irq = link->irq; + dev->base_addr = link->resource[0]->start; + + ioaddr = dev->base_addr; + + /* Read the ethernet address from the CIS. */ + len = pcmcia_get_tuple(link, 0x80, &buf); + if (!buf || len < ETHER_ADDR_LEN) { + kfree(buf); + goto failed; + } + memcpy(dev->dev_addr, buf, ETHER_ADDR_LEN); + kfree(buf); + + /* Verify configuration by reading the MACE ID. */ + { + char sig[2]; + + sig[0] = mace_read(lp, ioaddr, MACE_CHIPIDL); + sig[1] = mace_read(lp, ioaddr, MACE_CHIPIDH); + if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) { + dev_dbg(&link->dev, "nmclan_cs configured: mace id=%x %x\n", + sig[0], sig[1]); + } else { + pr_notice("mace id not found: %x %x should be 0x40 0x?9\n", + sig[0], sig[1]); + return -ENODEV; + } + } + + if(mace_init(lp, ioaddr, dev->dev_addr) == -1) + goto failed; + + /* The if_port symbol can be set when the module is loaded */ + if (if_port <= 2) + dev->if_port = if_port; + else + pr_notice("invalid if_port requested\n"); + + SET_NETDEV_DEV(dev, &link->dev); + + i = register_netdev(dev); + if (i != 0) { + pr_notice("register_netdev() failed\n"); + goto failed; + } + + netdev_info(dev, "nmclan: port %#3lx, irq %d, %s port, hw_addr %pM\n", + dev->base_addr, dev->irq, if_names[dev->if_port], dev->dev_addr); + return 0; + +failed: + nmclan_release(link); + return -ENODEV; +} /* nmclan_config */ + +static void nmclan_release(struct pcmcia_device *link) +{ + dev_dbg(&link->dev, "nmclan_release\n"); + pcmcia_disable_device(link); +} + +static int nmclan_suspend(struct pcmcia_device *link) +{ + struct net_device *dev = link->priv; + + if (link->open) + netif_device_detach(dev); + + return 0; +} + +static int nmclan_resume(struct pcmcia_device *link) +{ + struct net_device *dev = link->priv; + + if (link->open) { + nmclan_reset(dev); + netif_device_attach(dev); + } + + return 0; +} + + +/* ---------------------------------------------------------------------------- +nmclan_reset + Reset and restore all of the Xilinx and MACE registers. +---------------------------------------------------------------------------- */ +static void nmclan_reset(struct net_device *dev) +{ + mace_private *lp = netdev_priv(dev); + +#if RESET_XILINX + struct pcmcia_device *link = &lp->link; + u8 OrigCorValue; + + /* Save original COR value */ + pcmcia_read_config_byte(link, CISREG_COR, &OrigCorValue); + + /* Reset Xilinx */ + dev_dbg(&link->dev, "nmclan_reset: OrigCorValue=0x%x, resetting...\n", + OrigCorValue); + pcmcia_write_config_byte(link, CISREG_COR, COR_SOFT_RESET); + /* Need to wait for 20 ms for PCMCIA to finish reset. */ + + /* Restore original COR configuration index */ + pcmcia_write_config_byte(link, CISREG_COR, + (COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK))); + /* Xilinx is now completely reset along with the MACE chip. */ + lp->tx_free_frames=AM2150_MAX_TX_FRAMES; + +#endif /* #if RESET_XILINX */ + + /* Xilinx is now completely reset along with the MACE chip. */ + lp->tx_free_frames=AM2150_MAX_TX_FRAMES; + + /* Reinitialize the MACE chip for operation. */ + mace_init(lp, dev->base_addr, dev->dev_addr); + mace_write(lp, dev->base_addr, MACE_IMR, MACE_IMR_DEFAULT); + + /* Restore the multicast list and enable TX and RX. */ + restore_multicast_list(dev); +} /* nmclan_reset */ + +/* ---------------------------------------------------------------------------- +mace_config + [Someone tell me what this is supposed to do? Is if_port a defined + standard? If so, there should be defines to indicate 1=10Base-T, + 2=10Base-2, etc. including limited automatic detection.] +---------------------------------------------------------------------------- */ +static int mace_config(struct net_device *dev, struct ifmap *map) +{ + if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) { + if (map->port <= 2) { + dev->if_port = map->port; + netdev_info(dev, "switched to %s port\n", if_names[dev->if_port]); + } else + return -EINVAL; + } + return 0; +} /* mace_config */ + +/* ---------------------------------------------------------------------------- +mace_open + Open device driver. +---------------------------------------------------------------------------- */ +static int mace_open(struct net_device *dev) +{ + unsigned int ioaddr = dev->base_addr; + mace_private *lp = netdev_priv(dev); + struct pcmcia_device *link = lp->p_dev; + + if (!pcmcia_dev_present(link)) + return -ENODEV; + + link->open++; + + MACEBANK(0); + + netif_start_queue(dev); + nmclan_reset(dev); + + return 0; /* Always succeed */ +} /* mace_open */ + +/* ---------------------------------------------------------------------------- +mace_close + Closes device driver. +---------------------------------------------------------------------------- */ +static int mace_close(struct net_device *dev) +{ + unsigned int ioaddr = dev->base_addr; + mace_private *lp = netdev_priv(dev); + struct pcmcia_device *link = lp->p_dev; + + dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name); + + /* Mask off all interrupts from the MACE chip. */ + outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR); + + link->open--; + netif_stop_queue(dev); + + return 0; +} /* mace_close */ + +static void netdev_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + strcpy(info->driver, DRV_NAME); + strcpy(info->version, DRV_VERSION); + sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr); +} + +static const struct ethtool_ops netdev_ethtool_ops = { + .get_drvinfo = netdev_get_drvinfo, +}; + +/* ---------------------------------------------------------------------------- +mace_start_xmit + This routine begins the packet transmit function. When completed, + it will generate a transmit interrupt. + + According to /usr/src/linux/net/inet/dev.c, if _start_xmit + returns 0, the "packet is now solely the responsibility of the + driver." If _start_xmit returns non-zero, the "transmission + failed, put skb back into a list." +---------------------------------------------------------------------------- */ + +static void mace_tx_timeout(struct net_device *dev) +{ + mace_private *lp = netdev_priv(dev); + struct pcmcia_device *link = lp->p_dev; + + netdev_notice(dev, "transmit timed out -- "); +#if RESET_ON_TIMEOUT + pr_cont("resetting card\n"); + pcmcia_reset_card(link->socket); +#else /* #if RESET_ON_TIMEOUT */ + pr_cont("NOT resetting card\n"); +#endif /* #if RESET_ON_TIMEOUT */ + dev->trans_start = jiffies; /* prevent tx timeout */ + netif_wake_queue(dev); +} + +static netdev_tx_t mace_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + mace_private *lp = netdev_priv(dev); + unsigned int ioaddr = dev->base_addr; + + netif_stop_queue(dev); + + pr_debug("%s: mace_start_xmit(length = %ld) called.\n", + dev->name, (long)skb->len); + +#if (!TX_INTERRUPTABLE) + /* Disable MACE TX interrupts. */ + outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT, + ioaddr + AM2150_MACE_BASE + MACE_IMR); + lp->tx_irq_disabled=1; +#endif /* #if (!TX_INTERRUPTABLE) */ + + { + /* This block must not be interrupted by another transmit request! + mace_tx_timeout will take care of timer-based retransmissions from + the upper layers. The interrupt handler is guaranteed never to + service a transmit interrupt while we are in here. + */ + + lp->linux_stats.tx_bytes += skb->len; + lp->tx_free_frames--; + + /* WARNING: Write the _exact_ number of bytes written in the header! */ + /* Put out the word header [must be an outw()] . . . */ + outw(skb->len, ioaddr + AM2150_XMT); + /* . . . and the packet [may be any combination of outw() and outb()] */ + outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1); + if (skb->len & 1) { + /* Odd byte transfer */ + outb(skb->data[skb->len-1], ioaddr + AM2150_XMT); + } + +#if MULTI_TX + if (lp->tx_free_frames > 0) + netif_start_queue(dev); +#endif /* #if MULTI_TX */ + } + +#if (!TX_INTERRUPTABLE) + /* Re-enable MACE TX interrupts. */ + lp->tx_irq_disabled=0; + outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR); +#endif /* #if (!TX_INTERRUPTABLE) */ + + dev_kfree_skb(skb); + + return NETDEV_TX_OK; +} /* mace_start_xmit */ + +/* ---------------------------------------------------------------------------- +mace_interrupt + The interrupt handler. +---------------------------------------------------------------------------- */ +static irqreturn_t mace_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = (struct net_device *) dev_id; + mace_private *lp = netdev_priv(dev); + unsigned int ioaddr; + int status; + int IntrCnt = MACE_MAX_IR_ITERATIONS; + + if (dev == NULL) { + pr_debug("mace_interrupt(): irq 0x%X for unknown device.\n", + irq); + return IRQ_NONE; + } + + ioaddr = dev->base_addr; + + if (lp->tx_irq_disabled) { + const char *msg; + if (lp->tx_irq_disabled) + msg = "Interrupt with tx_irq_disabled"; + else + msg = "Re-entering the interrupt handler"; + netdev_notice(dev, "%s [isr=%02X, imr=%02X]\n", + msg, + inb(ioaddr + AM2150_MACE_BASE + MACE_IR), + inb(ioaddr + AM2150_MACE_BASE + MACE_IMR)); + /* WARNING: MACE_IR has been read! */ + return IRQ_NONE; + } + + if (!netif_device_present(dev)) { + netdev_dbg(dev, "interrupt from dead card\n"); + return IRQ_NONE; + } + + do { + /* WARNING: MACE_IR is a READ/CLEAR port! */ + status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR); + + pr_debug("mace_interrupt: irq 0x%X status 0x%X.\n", irq, status); + + if (status & MACE_IR_RCVINT) { + mace_rx(dev, MACE_MAX_RX_ITERATIONS); + } + + if (status & MACE_IR_XMTINT) { + unsigned char fifofc; + unsigned char xmtrc; + unsigned char xmtfs; + + fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC); + if ((fifofc & MACE_FIFOFC_XMTFC)==0) { + lp->linux_stats.tx_errors++; + outb(0xFF, ioaddr + AM2150_XMT_SKIP); + } + + /* Transmit Retry Count (XMTRC, reg 4) */ + xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC); + if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++; + lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC); + + if ( + (xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) & + MACE_XMTFS_XMTSV /* Transmit Status Valid */ + ) { + lp->mace_stats.xmtsv++; + + if (xmtfs & ~MACE_XMTFS_XMTSV) { + if (xmtfs & MACE_XMTFS_UFLO) { + /* Underflow. Indicates that the Transmit FIFO emptied before + the end of frame was reached. */ + lp->mace_stats.uflo++; + } + if (xmtfs & MACE_XMTFS_LCOL) { + /* Late Collision */ + lp->mace_stats.lcol++; + } + if (xmtfs & MACE_XMTFS_MORE) { + /* MORE than one retry was needed */ + lp->mace_stats.more++; + } + if (xmtfs & MACE_XMTFS_ONE) { + /* Exactly ONE retry occurred */ + lp->mace_stats.one++; + } + if (xmtfs & MACE_XMTFS_DEFER) { + /* Transmission was defered */ + lp->mace_stats.defer++; + } + if (xmtfs & MACE_XMTFS_LCAR) { + /* Loss of carrier */ + lp->mace_stats.lcar++; + } + if (xmtfs & MACE_XMTFS_RTRY) { + /* Retry error: transmit aborted after 16 attempts */ + lp->mace_stats.rtry++; + } + } /* if (xmtfs & ~MACE_XMTFS_XMTSV) */ + + } /* if (xmtfs & MACE_XMTFS_XMTSV) */ + + lp->linux_stats.tx_packets++; + lp->tx_free_frames++; + netif_wake_queue(dev); + } /* if (status & MACE_IR_XMTINT) */ + + if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) { + if (status & MACE_IR_JAB) { + /* Jabber Error. Excessive transmit duration (20-150ms). */ + lp->mace_stats.jab++; + } + if (status & MACE_IR_BABL) { + /* Babble Error. >1518 bytes transmitted. */ + lp->mace_stats.babl++; + } + if (status & MACE_IR_CERR) { + /* Collision Error. CERR indicates the absence of the + Signal Quality Error Test message after a packet + transmission. */ + lp->mace_stats.cerr++; + } + if (status & MACE_IR_RCVCCO) { + /* Receive Collision Count Overflow; */ + lp->mace_stats.rcvcco++; + } + if (status & MACE_IR_RNTPCO) { + /* Runt Packet Count Overflow */ + lp->mace_stats.rntpco++; + } + if (status & MACE_IR_MPCO) { + /* Missed Packet Count Overflow */ + lp->mace_stats.mpco++; + } + } /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */ + + } while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt)); + + return IRQ_HANDLED; +} /* mace_interrupt */ + +/* ---------------------------------------------------------------------------- +mace_rx + Receives packets. +---------------------------------------------------------------------------- */ +static int mace_rx(struct net_device *dev, unsigned char RxCnt) +{ + mace_private *lp = netdev_priv(dev); + unsigned int ioaddr = dev->base_addr; + unsigned char rx_framecnt; + unsigned short rx_status; + + while ( + ((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) && + (rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */ + (RxCnt--) + ) { + rx_status = inw(ioaddr + AM2150_RCV); + + pr_debug("%s: in mace_rx(), framecnt 0x%X, rx_status" + " 0x%X.\n", dev->name, rx_framecnt, rx_status); + + if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */ + lp->linux_stats.rx_errors++; + if (rx_status & MACE_RCVFS_OFLO) { + lp->mace_stats.oflo++; + } + if (rx_status & MACE_RCVFS_CLSN) { + lp->mace_stats.clsn++; + } + if (rx_status & MACE_RCVFS_FRAM) { + lp->mace_stats.fram++; + } + if (rx_status & MACE_RCVFS_FCS) { + lp->mace_stats.fcs++; + } + } else { + short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4; + /* Auto Strip is off, always subtract 4 */ + struct sk_buff *skb; + + lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV); + /* runt packet count */ + lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV); + /* rcv collision count */ + + pr_debug(" receiving packet size 0x%X rx_status" + " 0x%X.\n", pkt_len, rx_status); + + skb = dev_alloc_skb(pkt_len+2); + + if (skb != NULL) { + skb_reserve(skb, 2); + insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1); + if (pkt_len & 1) + *(skb_tail_pointer(skb) - 1) = inb(ioaddr + AM2150_RCV); + skb->protocol = eth_type_trans(skb, dev); + + netif_rx(skb); /* Send the packet to the upper (protocol) layers. */ + + lp->linux_stats.rx_packets++; + lp->linux_stats.rx_bytes += pkt_len; + outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */ + continue; + } else { + pr_debug("%s: couldn't allocate a sk_buff of size" + " %d.\n", dev->name, pkt_len); + lp->linux_stats.rx_dropped++; + } + } + outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */ + } /* while */ + + return 0; +} /* mace_rx */ + +/* ---------------------------------------------------------------------------- +pr_linux_stats +---------------------------------------------------------------------------- */ +static void pr_linux_stats(struct net_device_stats *pstats) +{ + pr_debug("pr_linux_stats\n"); + pr_debug(" rx_packets=%-7ld tx_packets=%ld\n", + (long)pstats->rx_packets, (long)pstats->tx_packets); + pr_debug(" rx_errors=%-7ld tx_errors=%ld\n", + (long)pstats->rx_errors, (long)pstats->tx_errors); + pr_debug(" rx_dropped=%-7ld tx_dropped=%ld\n", + (long)pstats->rx_dropped, (long)pstats->tx_dropped); + pr_debug(" multicast=%-7ld collisions=%ld\n", + (long)pstats->multicast, (long)pstats->collisions); + + pr_debug(" rx_length_errors=%-7ld rx_over_errors=%ld\n", + (long)pstats->rx_length_errors, (long)pstats->rx_over_errors); + pr_debug(" rx_crc_errors=%-7ld rx_frame_errors=%ld\n", + (long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors); + pr_debug(" rx_fifo_errors=%-7ld rx_missed_errors=%ld\n", + (long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors); + + pr_debug(" tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n", + (long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors); + pr_debug(" tx_fifo_errors=%-7ld tx_heartbeat_errors=%ld\n", + (long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors); + pr_debug(" tx_window_errors=%ld\n", + (long)pstats->tx_window_errors); +} /* pr_linux_stats */ + +/* ---------------------------------------------------------------------------- +pr_mace_stats +---------------------------------------------------------------------------- */ +static void pr_mace_stats(mace_statistics *pstats) +{ + pr_debug("pr_mace_stats\n"); + + pr_debug(" xmtsv=%-7d uflo=%d\n", + pstats->xmtsv, pstats->uflo); + pr_debug(" lcol=%-7d more=%d\n", + pstats->lcol, pstats->more); + pr_debug(" one=%-7d defer=%d\n", + pstats->one, pstats->defer); + pr_debug(" lcar=%-7d rtry=%d\n", + pstats->lcar, pstats->rtry); + + /* MACE_XMTRC */ + pr_debug(" exdef=%-7d xmtrc=%d\n", + pstats->exdef, pstats->xmtrc); + + /* RFS1--Receive Status (RCVSTS) */ + pr_debug(" oflo=%-7d clsn=%d\n", + pstats->oflo, pstats->clsn); + pr_debug(" fram=%-7d fcs=%d\n", + pstats->fram, pstats->fcs); + + /* RFS2--Runt Packet Count (RNTPC) */ + /* RFS3--Receive Collision Count (RCVCC) */ + pr_debug(" rfs_rntpc=%-7d rfs_rcvcc=%d\n", + pstats->rfs_rntpc, pstats->rfs_rcvcc); + + /* MACE_IR */ + pr_debug(" jab=%-7d babl=%d\n", + pstats->jab, pstats->babl); + pr_debug(" cerr=%-7d rcvcco=%d\n", + pstats->cerr, pstats->rcvcco); + pr_debug(" rntpco=%-7d mpco=%d\n", + pstats->rntpco, pstats->mpco); + + /* MACE_MPC */ + pr_debug(" mpc=%d\n", pstats->mpc); + + /* MACE_RNTPC */ + pr_debug(" rntpc=%d\n", pstats->rntpc); + + /* MACE_RCVCC */ + pr_debug(" rcvcc=%d\n", pstats->rcvcc); + +} /* pr_mace_stats */ + +/* ---------------------------------------------------------------------------- +update_stats + Update statistics. We change to register window 1, so this + should be run single-threaded if the device is active. This is + expected to be a rare operation, and it's simpler for the rest + of the driver to assume that window 0 is always valid rather + than use a special window-state variable. + + oflo & uflo should _never_ occur since it would mean the Xilinx + was not able to transfer data between the MACE FIFO and the + card's SRAM fast enough. If this happens, something is + seriously wrong with the hardware. +---------------------------------------------------------------------------- */ +static void update_stats(unsigned int ioaddr, struct net_device *dev) +{ + mace_private *lp = netdev_priv(dev); + + lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC); + lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC); + lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC); + /* At this point, mace_stats is fully updated for this call. + We may now update the linux_stats. */ + + /* The MACE has no equivalent for linux_stats field which are commented + out. */ + + /* lp->linux_stats.multicast; */ + lp->linux_stats.collisions = + lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc; + /* Collision: The MACE may retry sending a packet 15 times + before giving up. The retry count is in XMTRC. + Does each retry constitute a collision? + If so, why doesn't the RCVCC record these collisions? */ + + /* detailed rx_errors: */ + lp->linux_stats.rx_length_errors = + lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc; + /* lp->linux_stats.rx_over_errors */ + lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs; + lp->linux_stats.rx_frame_errors = lp->mace_stats.fram; + lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo; + lp->linux_stats.rx_missed_errors = + lp->mace_stats.mpco * 256 + lp->mace_stats.mpc; + + /* detailed tx_errors */ + lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry; + lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar; + /* LCAR usually results from bad cabling. */ + lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo; + lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr; + /* lp->linux_stats.tx_window_errors; */ +} /* update_stats */ + +/* ---------------------------------------------------------------------------- +mace_get_stats + Gathers ethernet statistics from the MACE chip. +---------------------------------------------------------------------------- */ +static struct net_device_stats *mace_get_stats(struct net_device *dev) +{ + mace_private *lp = netdev_priv(dev); + + update_stats(dev->base_addr, dev); + + pr_debug("%s: updating the statistics.\n", dev->name); + pr_linux_stats(&lp->linux_stats); + pr_mace_stats(&lp->mace_stats); + + return &lp->linux_stats; +} /* net_device_stats */ + +/* ---------------------------------------------------------------------------- +updateCRC + Modified from Am79C90 data sheet. +---------------------------------------------------------------------------- */ + +#ifdef BROKEN_MULTICAST + +static void updateCRC(int *CRC, int bit) +{ + static const int poly[]={ + 1,1,1,0, 1,1,0,1, + 1,0,1,1, 1,0,0,0, + 1,0,0,0, 0,0,1,1, + 0,0,1,0, 0,0,0,0 + }; /* CRC polynomial. poly[n] = coefficient of the x**n term of the + CRC generator polynomial. */ + + int j; + + /* shift CRC and control bit (CRC[32]) */ + for (j = 32; j > 0; j--) + CRC[j] = CRC[j-1]; + CRC[0] = 0; + + /* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */ + if (bit ^ CRC[32]) + for (j = 0; j < 32; j++) + CRC[j] ^= poly[j]; +} /* updateCRC */ + +/* ---------------------------------------------------------------------------- +BuildLAF + Build logical address filter. + Modified from Am79C90 data sheet. + +Input + ladrf: logical address filter (contents initialized to 0) + adr: ethernet address +---------------------------------------------------------------------------- */ +static void BuildLAF(int *ladrf, int *adr) +{ + int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */ + + int i, byte; /* temporary array indices */ + int hashcode; /* the output object */ + + CRC[32]=0; + + for (byte = 0; byte < 6; byte++) + for (i = 0; i < 8; i++) + updateCRC(CRC, (adr[byte] >> i) & 1); + + hashcode = 0; + for (i = 0; i < 6; i++) + hashcode = (hashcode << 1) + CRC[i]; + + byte = hashcode >> 3; + ladrf[byte] |= (1 << (hashcode & 7)); + +#ifdef PCMCIA_DEBUG + if (0) + printk(KERN_DEBUG " adr =%pM\n", adr); + printk(KERN_DEBUG " hashcode = %d(decimal), ladrf[0:63] =", hashcode); + for (i = 0; i < 8; i++) + pr_cont(" %02X", ladrf[i]); + pr_cont("\n"); +#endif +} /* BuildLAF */ + +/* ---------------------------------------------------------------------------- +restore_multicast_list + Restores the multicast filter for MACE chip to the last + set_multicast_list() call. + +Input + multicast_num_addrs + multicast_ladrf[] +---------------------------------------------------------------------------- */ +static void restore_multicast_list(struct net_device *dev) +{ + mace_private *lp = netdev_priv(dev); + int num_addrs = lp->multicast_num_addrs; + int *ladrf = lp->multicast_ladrf; + unsigned int ioaddr = dev->base_addr; + int i; + + pr_debug("%s: restoring Rx mode to %d addresses.\n", + dev->name, num_addrs); + + if (num_addrs > 0) { + + pr_debug("Attempt to restore multicast list detected.\n"); + + mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR); + /* Poll ADDRCHG bit */ + while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG) + ; + /* Set LADRF register */ + for (i = 0; i < MACE_LADRF_LEN; i++) + mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]); + + mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL); + mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); + + } else if (num_addrs < 0) { + + /* Promiscuous mode: receive all packets */ + mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); + mace_write(lp, ioaddr, MACE_MACCC, + MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV + ); + + } else { + + /* Normal mode */ + mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); + mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); + + } +} /* restore_multicast_list */ + +/* ---------------------------------------------------------------------------- +set_multicast_list + Set or clear the multicast filter for this adaptor. + +Input + num_addrs == -1 Promiscuous mode, receive all packets + num_addrs == 0 Normal mode, clear multicast list + num_addrs > 0 Multicast mode, receive normal and MC packets, and do + best-effort filtering. +Output + multicast_num_addrs + multicast_ladrf[] +---------------------------------------------------------------------------- */ + +static void set_multicast_list(struct net_device *dev) +{ + mace_private *lp = netdev_priv(dev); + int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */ + struct netdev_hw_addr *ha; + +#ifdef PCMCIA_DEBUG + { + static int old; + if (netdev_mc_count(dev) != old) { + old = netdev_mc_count(dev); + pr_debug("%s: setting Rx mode to %d addresses.\n", + dev->name, old); + } + } +#endif + + /* Set multicast_num_addrs. */ + lp->multicast_num_addrs = netdev_mc_count(dev); + + /* Set multicast_ladrf. */ + if (num_addrs > 0) { + /* Calculate multicast logical address filter */ + memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN); + netdev_for_each_mc_addr(ha, dev) { + memcpy(adr, ha->addr, ETHER_ADDR_LEN); + BuildLAF(lp->multicast_ladrf, adr); + } + } + + restore_multicast_list(dev); + +} /* set_multicast_list */ + +#endif /* BROKEN_MULTICAST */ + +static void restore_multicast_list(struct net_device *dev) +{ + unsigned int ioaddr = dev->base_addr; + mace_private *lp = netdev_priv(dev); + + pr_debug("%s: restoring Rx mode to %d addresses.\n", dev->name, + lp->multicast_num_addrs); + + if (dev->flags & IFF_PROMISC) { + /* Promiscuous mode: receive all packets */ + mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); + mace_write(lp, ioaddr, MACE_MACCC, + MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV + ); + } else { + /* Normal mode */ + mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); + mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); + } +} /* restore_multicast_list */ + +static void set_multicast_list(struct net_device *dev) +{ + mace_private *lp = netdev_priv(dev); + +#ifdef PCMCIA_DEBUG + { + static int old; + if (netdev_mc_count(dev) != old) { + old = netdev_mc_count(dev); + pr_debug("%s: setting Rx mode to %d addresses.\n", + dev->name, old); + } + } +#endif + + lp->multicast_num_addrs = netdev_mc_count(dev); + restore_multicast_list(dev); + +} /* set_multicast_list */ + +static const struct pcmcia_device_id nmclan_ids[] = { + PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "Ethernet", 0x085a850b, 0x00b2e941), + PCMCIA_DEVICE_PROD_ID12("Portable Add-ons", "Ethernet+", 0xebf1d60, 0xad673aaf), + PCMCIA_DEVICE_NULL, +}; +MODULE_DEVICE_TABLE(pcmcia, nmclan_ids); + +static struct pcmcia_driver nmclan_cs_driver = { + .owner = THIS_MODULE, + .name = "nmclan_cs", + .probe = nmclan_probe, + .remove = nmclan_detach, + .id_table = nmclan_ids, + .suspend = nmclan_suspend, + .resume = nmclan_resume, +}; + +static int __init init_nmclan_cs(void) +{ + return pcmcia_register_driver(&nmclan_cs_driver); +} + +static void __exit exit_nmclan_cs(void) +{ + pcmcia_unregister_driver(&nmclan_cs_driver); +} + +module_init(init_nmclan_cs); +module_exit(exit_nmclan_cs); diff --git a/drivers/net/ethernet/amd/pcnet32.c b/drivers/net/ethernet/amd/pcnet32.c new file mode 100644 index 000000000000..f92bc6e34828 --- /dev/null +++ b/drivers/net/ethernet/amd/pcnet32.c @@ -0,0 +1,2937 @@ +/* pcnet32.c: An AMD PCnet32 ethernet driver for linux. */ +/* + * Copyright 1996-1999 Thomas Bogendoerfer + * + * Derived from the lance driver written 1993,1994,1995 by Donald Becker. + * + * Copyright 1993 United States Government as represented by the + * Director, National Security Agency. + * + * This software may be used and distributed according to the terms + * of the GNU General Public License, incorporated herein by reference. + * + * This driver is for PCnet32 and PCnetPCI based ethercards + */ +/************************************************************************** + * 23 Oct, 2000. + * Fixed a few bugs, related to running the controller in 32bit mode. + * + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. + * + *************************************************************************/ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#define DRV_NAME "pcnet32" +#define DRV_VERSION "1.35" +#define DRV_RELDATE "21.Apr.2008" +#define PFX DRV_NAME ": " + +static const char *const version = + DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " tsbogend@alpha.franken.de\n"; + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/ethtool.h> +#include <linux/mii.h> +#include <linux/crc32.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/if_ether.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/moduleparam.h> +#include <linux/bitops.h> +#include <linux/io.h> +#include <linux/uaccess.h> + +#include <asm/dma.h> +#include <asm/irq.h> + +/* + * PCI device identifiers for "new style" Linux PCI Device Drivers + */ +static DEFINE_PCI_DEVICE_TABLE(pcnet32_pci_tbl) = { + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE_HOME), }, + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE), }, + + /* + * Adapters that were sold with IBM's RS/6000 or pSeries hardware have + * the incorrect vendor id. + */ + { PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_AMD_LANCE), + .class = (PCI_CLASS_NETWORK_ETHERNET << 8), .class_mask = 0xffff00, }, + + { } /* terminate list */ +}; + +MODULE_DEVICE_TABLE(pci, pcnet32_pci_tbl); + +static int cards_found; + +/* + * VLB I/O addresses + */ +static unsigned int pcnet32_portlist[] = + { 0x300, 0x320, 0x340, 0x360, 0 }; + +static int pcnet32_debug; +static int tx_start = 1; /* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */ +static int pcnet32vlb; /* check for VLB cards ? */ + +static struct net_device *pcnet32_dev; + +static int max_interrupt_work = 2; +static int rx_copybreak = 200; + +#define PCNET32_PORT_AUI 0x00 +#define PCNET32_PORT_10BT 0x01 +#define PCNET32_PORT_GPSI 0x02 +#define PCNET32_PORT_MII 0x03 + +#define PCNET32_PORT_PORTSEL 0x03 +#define PCNET32_PORT_ASEL 0x04 +#define PCNET32_PORT_100 0x40 +#define PCNET32_PORT_FD 0x80 + +#define PCNET32_DMA_MASK 0xffffffff + +#define PCNET32_WATCHDOG_TIMEOUT (jiffies + (2 * HZ)) +#define PCNET32_BLINK_TIMEOUT (jiffies + (HZ/4)) + +/* + * table to translate option values from tulip + * to internal options + */ +static const unsigned char options_mapping[] = { + PCNET32_PORT_ASEL, /* 0 Auto-select */ + PCNET32_PORT_AUI, /* 1 BNC/AUI */ + PCNET32_PORT_AUI, /* 2 AUI/BNC */ + PCNET32_PORT_ASEL, /* 3 not supported */ + PCNET32_PORT_10BT | PCNET32_PORT_FD, /* 4 10baseT-FD */ + PCNET32_PORT_ASEL, /* 5 not supported */ + PCNET32_PORT_ASEL, /* 6 not supported */ + PCNET32_PORT_ASEL, /* 7 not supported */ + PCNET32_PORT_ASEL, /* 8 not supported */ + PCNET32_PORT_MII, /* 9 MII 10baseT */ + PCNET32_PORT_MII | PCNET32_PORT_FD, /* 10 MII 10baseT-FD */ + PCNET32_PORT_MII, /* 11 MII (autosel) */ + PCNET32_PORT_10BT, /* 12 10BaseT */ + PCNET32_PORT_MII | PCNET32_PORT_100, /* 13 MII 100BaseTx */ + /* 14 MII 100BaseTx-FD */ + PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD, + PCNET32_PORT_ASEL /* 15 not supported */ +}; + +static const char pcnet32_gstrings_test[][ETH_GSTRING_LEN] = { + "Loopback test (offline)" +}; + +#define PCNET32_TEST_LEN ARRAY_SIZE(pcnet32_gstrings_test) + +#define PCNET32_NUM_REGS 136 + +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS]; +static int full_duplex[MAX_UNITS]; +static int homepna[MAX_UNITS]; + +/* + * Theory of Operation + * + * This driver uses the same software structure as the normal lance + * driver. So look for a verbose description in lance.c. The differences + * to the normal lance driver is the use of the 32bit mode of PCnet32 + * and PCnetPCI chips. Because these chips are 32bit chips, there is no + * 16MB limitation and we don't need bounce buffers. + */ + +/* + * Set the number of Tx and Rx buffers, using Log_2(# buffers). + * Reasonable default values are 4 Tx buffers, and 16 Rx buffers. + * That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4). + */ +#ifndef PCNET32_LOG_TX_BUFFERS +#define PCNET32_LOG_TX_BUFFERS 4 +#define PCNET32_LOG_RX_BUFFERS 5 +#define PCNET32_LOG_MAX_TX_BUFFERS 9 /* 2^9 == 512 */ +#define PCNET32_LOG_MAX_RX_BUFFERS 9 +#endif + +#define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS)) +#define TX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_TX_BUFFERS)) + +#define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS)) +#define RX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_RX_BUFFERS)) + +#define PKT_BUF_SKB 1544 +/* actual buffer length after being aligned */ +#define PKT_BUF_SIZE (PKT_BUF_SKB - NET_IP_ALIGN) +/* chip wants twos complement of the (aligned) buffer length */ +#define NEG_BUF_SIZE (NET_IP_ALIGN - PKT_BUF_SKB) + +/* Offsets from base I/O address. */ +#define PCNET32_WIO_RDP 0x10 +#define PCNET32_WIO_RAP 0x12 +#define PCNET32_WIO_RESET 0x14 +#define PCNET32_WIO_BDP 0x16 + +#define PCNET32_DWIO_RDP 0x10 +#define PCNET32_DWIO_RAP 0x14 +#define PCNET32_DWIO_RESET 0x18 +#define PCNET32_DWIO_BDP 0x1C + +#define PCNET32_TOTAL_SIZE 0x20 + +#define CSR0 0 +#define CSR0_INIT 0x1 +#define CSR0_START 0x2 +#define CSR0_STOP 0x4 +#define CSR0_TXPOLL 0x8 +#define CSR0_INTEN 0x40 +#define CSR0_IDON 0x0100 +#define CSR0_NORMAL (CSR0_START | CSR0_INTEN) +#define PCNET32_INIT_LOW 1 +#define PCNET32_INIT_HIGH 2 +#define CSR3 3 +#define CSR4 4 +#define CSR5 5 +#define CSR5_SUSPEND 0x0001 +#define CSR15 15 +#define PCNET32_MC_FILTER 8 + +#define PCNET32_79C970A 0x2621 + +/* The PCNET32 Rx and Tx ring descriptors. */ +struct pcnet32_rx_head { + __le32 base; + __le16 buf_length; /* two`s complement of length */ + __le16 status; + __le32 msg_length; + __le32 reserved; +}; + +struct pcnet32_tx_head { + __le32 base; + __le16 length; /* two`s complement of length */ + __le16 status; + __le32 misc; + __le32 reserved; +}; + +/* The PCNET32 32-Bit initialization block, described in databook. */ +struct pcnet32_init_block { + __le16 mode; + __le16 tlen_rlen; + u8 phys_addr[6]; + __le16 reserved; + __le32 filter[2]; + /* Receive and transmit ring base, along with extra bits. */ + __le32 rx_ring; + __le32 tx_ring; +}; + +/* PCnet32 access functions */ +struct pcnet32_access { + u16 (*read_csr) (unsigned long, int); + void (*write_csr) (unsigned long, int, u16); + u16 (*read_bcr) (unsigned long, int); + void (*write_bcr) (unsigned long, int, u16); + u16 (*read_rap) (unsigned long); + void (*write_rap) (unsigned long, u16); + void (*reset) (unsigned long); +}; + +/* + * The first field of pcnet32_private is read by the ethernet device + * so the structure should be allocated using pci_alloc_consistent(). + */ +struct pcnet32_private { + struct pcnet32_init_block *init_block; + /* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */ + struct pcnet32_rx_head *rx_ring; + struct pcnet32_tx_head *tx_ring; + dma_addr_t init_dma_addr;/* DMA address of beginning of the init block, + returned by pci_alloc_consistent */ + struct pci_dev *pci_dev; + const char *name; + /* The saved address of a sent-in-place packet/buffer, for skfree(). */ + struct sk_buff **tx_skbuff; + struct sk_buff **rx_skbuff; + dma_addr_t *tx_dma_addr; + dma_addr_t *rx_dma_addr; + const struct pcnet32_access *a; + spinlock_t lock; /* Guard lock */ + unsigned int cur_rx, cur_tx; /* The next free ring entry */ + unsigned int rx_ring_size; /* current rx ring size */ + unsigned int tx_ring_size; /* current tx ring size */ + unsigned int rx_mod_mask; /* rx ring modular mask */ + unsigned int tx_mod_mask; /* tx ring modular mask */ + unsigned short rx_len_bits; + unsigned short tx_len_bits; + dma_addr_t rx_ring_dma_addr; + dma_addr_t tx_ring_dma_addr; + unsigned int dirty_rx, /* ring entries to be freed. */ + dirty_tx; + + struct net_device *dev; + struct napi_struct napi; + char tx_full; + char phycount; /* number of phys found */ + int options; + unsigned int shared_irq:1, /* shared irq possible */ + dxsuflo:1, /* disable transmit stop on uflo */ + mii:1; /* mii port available */ + struct net_device *next; + struct mii_if_info mii_if; + struct timer_list watchdog_timer; + u32 msg_enable; /* debug message level */ + + /* each bit indicates an available PHY */ + u32 phymask; + unsigned short chip_version; /* which variant this is */ + + /* saved registers during ethtool blink */ + u16 save_regs[4]; +}; + +static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *); +static int pcnet32_probe1(unsigned long, int, struct pci_dev *); +static int pcnet32_open(struct net_device *); +static int pcnet32_init_ring(struct net_device *); +static netdev_tx_t pcnet32_start_xmit(struct sk_buff *, + struct net_device *); +static void pcnet32_tx_timeout(struct net_device *dev); +static irqreturn_t pcnet32_interrupt(int, void *); +static int pcnet32_close(struct net_device *); +static struct net_device_stats *pcnet32_get_stats(struct net_device *); +static void pcnet32_load_multicast(struct net_device *dev); +static void pcnet32_set_multicast_list(struct net_device *); +static int pcnet32_ioctl(struct net_device *, struct ifreq *, int); +static void pcnet32_watchdog(struct net_device *); +static int mdio_read(struct net_device *dev, int phy_id, int reg_num); +static void mdio_write(struct net_device *dev, int phy_id, int reg_num, + int val); +static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits); +static void pcnet32_ethtool_test(struct net_device *dev, + struct ethtool_test *eth_test, u64 * data); +static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1); +static int pcnet32_get_regs_len(struct net_device *dev); +static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs, + void *ptr); +static void pcnet32_purge_tx_ring(struct net_device *dev); +static int pcnet32_alloc_ring(struct net_device *dev, const char *name); +static void pcnet32_free_ring(struct net_device *dev); +static void pcnet32_check_media(struct net_device *dev, int verbose); + +static u16 pcnet32_wio_read_csr(unsigned long addr, int index) +{ + outw(index, addr + PCNET32_WIO_RAP); + return inw(addr + PCNET32_WIO_RDP); +} + +static void pcnet32_wio_write_csr(unsigned long addr, int index, u16 val) +{ + outw(index, addr + PCNET32_WIO_RAP); + outw(val, addr + PCNET32_WIO_RDP); +} + +static u16 pcnet32_wio_read_bcr(unsigned long addr, int index) +{ + outw(index, addr + PCNET32_WIO_RAP); + return inw(addr + PCNET32_WIO_BDP); +} + +static void pcnet32_wio_write_bcr(unsigned long addr, int index, u16 val) +{ + outw(index, addr + PCNET32_WIO_RAP); + outw(val, addr + PCNET32_WIO_BDP); +} + +static u16 pcnet32_wio_read_rap(unsigned long addr) +{ + return inw(addr + PCNET32_WIO_RAP); +} + +static void pcnet32_wio_write_rap(unsigned long addr, u16 val) +{ + outw(val, addr + PCNET32_WIO_RAP); +} + +static void pcnet32_wio_reset(unsigned long addr) +{ + inw(addr + PCNET32_WIO_RESET); +} + +static int pcnet32_wio_check(unsigned long addr) +{ + outw(88, addr + PCNET32_WIO_RAP); + return inw(addr + PCNET32_WIO_RAP) == 88; +} + +static const struct pcnet32_access pcnet32_wio = { + .read_csr = pcnet32_wio_read_csr, + .write_csr = pcnet32_wio_write_csr, + .read_bcr = pcnet32_wio_read_bcr, + .write_bcr = pcnet32_wio_write_bcr, + .read_rap = pcnet32_wio_read_rap, + .write_rap = pcnet32_wio_write_rap, + .reset = pcnet32_wio_reset +}; + +static u16 pcnet32_dwio_read_csr(unsigned long addr, int index) +{ + outl(index, addr + PCNET32_DWIO_RAP); + return inl(addr + PCNET32_DWIO_RDP) & 0xffff; +} + +static void pcnet32_dwio_write_csr(unsigned long addr, int index, u16 val) +{ + outl(index, addr + PCNET32_DWIO_RAP); + outl(val, addr + PCNET32_DWIO_RDP); +} + +static u16 pcnet32_dwio_read_bcr(unsigned long addr, int index) +{ + outl(index, addr + PCNET32_DWIO_RAP); + return inl(addr + PCNET32_DWIO_BDP) & 0xffff; +} + +static void pcnet32_dwio_write_bcr(unsigned long addr, int index, u16 val) +{ + outl(index, addr + PCNET32_DWIO_RAP); + outl(val, addr + PCNET32_DWIO_BDP); +} + +static u16 pcnet32_dwio_read_rap(unsigned long addr) +{ + return inl(addr + PCNET32_DWIO_RAP) & 0xffff; +} + +static void pcnet32_dwio_write_rap(unsigned long addr, u16 val) +{ + outl(val, addr + PCNET32_DWIO_RAP); +} + +static void pcnet32_dwio_reset(unsigned long addr) +{ + inl(addr + PCNET32_DWIO_RESET); +} + +static int pcnet32_dwio_check(unsigned long addr) +{ + outl(88, addr + PCNET32_DWIO_RAP); + return (inl(addr + PCNET32_DWIO_RAP) & 0xffff) == 88; +} + +static const struct pcnet32_access pcnet32_dwio = { + .read_csr = pcnet32_dwio_read_csr, + .write_csr = pcnet32_dwio_write_csr, + .read_bcr = pcnet32_dwio_read_bcr, + .write_bcr = pcnet32_dwio_write_bcr, + .read_rap = pcnet32_dwio_read_rap, + .write_rap = pcnet32_dwio_write_rap, + .reset = pcnet32_dwio_reset +}; + +static void pcnet32_netif_stop(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + + dev->trans_start = jiffies; /* prevent tx timeout */ + napi_disable(&lp->napi); + netif_tx_disable(dev); +} + +static void pcnet32_netif_start(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + ulong ioaddr = dev->base_addr; + u16 val; + + netif_wake_queue(dev); + val = lp->a->read_csr(ioaddr, CSR3); + val &= 0x00ff; + lp->a->write_csr(ioaddr, CSR3, val); + napi_enable(&lp->napi); +} + +/* + * Allocate space for the new sized tx ring. + * Free old resources + * Save new resources. + * Any failure keeps old resources. + * Must be called with lp->lock held. + */ +static void pcnet32_realloc_tx_ring(struct net_device *dev, + struct pcnet32_private *lp, + unsigned int size) +{ + dma_addr_t new_ring_dma_addr; + dma_addr_t *new_dma_addr_list; + struct pcnet32_tx_head *new_tx_ring; + struct sk_buff **new_skb_list; + + pcnet32_purge_tx_ring(dev); + + new_tx_ring = pci_alloc_consistent(lp->pci_dev, + sizeof(struct pcnet32_tx_head) * + (1 << size), + &new_ring_dma_addr); + if (new_tx_ring == NULL) { + netif_err(lp, drv, dev, "Consistent memory allocation failed\n"); + return; + } + memset(new_tx_ring, 0, sizeof(struct pcnet32_tx_head) * (1 << size)); + + new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t), + GFP_ATOMIC); + if (!new_dma_addr_list) { + netif_err(lp, drv, dev, "Memory allocation failed\n"); + goto free_new_tx_ring; + } + + new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *), + GFP_ATOMIC); + if (!new_skb_list) { + netif_err(lp, drv, dev, "Memory allocation failed\n"); + goto free_new_lists; + } + + kfree(lp->tx_skbuff); + kfree(lp->tx_dma_addr); + pci_free_consistent(lp->pci_dev, + sizeof(struct pcnet32_tx_head) * + lp->tx_ring_size, lp->tx_ring, + lp->tx_ring_dma_addr); + + lp->tx_ring_size = (1 << size); + lp->tx_mod_mask = lp->tx_ring_size - 1; + lp->tx_len_bits = (size << 12); + lp->tx_ring = new_tx_ring; + lp->tx_ring_dma_addr = new_ring_dma_addr; + lp->tx_dma_addr = new_dma_addr_list; + lp->tx_skbuff = new_skb_list; + return; + +free_new_lists: + kfree(new_dma_addr_list); +free_new_tx_ring: + pci_free_consistent(lp->pci_dev, + sizeof(struct pcnet32_tx_head) * + (1 << size), + new_tx_ring, + new_ring_dma_addr); +} + +/* + * Allocate space for the new sized rx ring. + * Re-use old receive buffers. + * alloc extra buffers + * free unneeded buffers + * free unneeded buffers + * Save new resources. + * Any failure keeps old resources. + * Must be called with lp->lock held. + */ +static void pcnet32_realloc_rx_ring(struct net_device *dev, + struct pcnet32_private *lp, + unsigned int size) +{ + dma_addr_t new_ring_dma_addr; + dma_addr_t *new_dma_addr_list; + struct pcnet32_rx_head *new_rx_ring; + struct sk_buff **new_skb_list; + int new, overlap; + + new_rx_ring = pci_alloc_consistent(lp->pci_dev, + sizeof(struct pcnet32_rx_head) * + (1 << size), + &new_ring_dma_addr); + if (new_rx_ring == NULL) { + netif_err(lp, drv, dev, "Consistent memory allocation failed\n"); + return; + } + memset(new_rx_ring, 0, sizeof(struct pcnet32_rx_head) * (1 << size)); + + new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t), + GFP_ATOMIC); + if (!new_dma_addr_list) { + netif_err(lp, drv, dev, "Memory allocation failed\n"); + goto free_new_rx_ring; + } + + new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *), + GFP_ATOMIC); + if (!new_skb_list) { + netif_err(lp, drv, dev, "Memory allocation failed\n"); + goto free_new_lists; + } + + /* first copy the current receive buffers */ + overlap = min(size, lp->rx_ring_size); + for (new = 0; new < overlap; new++) { + new_rx_ring[new] = lp->rx_ring[new]; + new_dma_addr_list[new] = lp->rx_dma_addr[new]; + new_skb_list[new] = lp->rx_skbuff[new]; + } + /* now allocate any new buffers needed */ + for (; new < size; new++) { + struct sk_buff *rx_skbuff; + new_skb_list[new] = dev_alloc_skb(PKT_BUF_SKB); + rx_skbuff = new_skb_list[new]; + if (!rx_skbuff) { + /* keep the original lists and buffers */ + netif_err(lp, drv, dev, "%s dev_alloc_skb failed\n", + __func__); + goto free_all_new; + } + skb_reserve(rx_skbuff, NET_IP_ALIGN); + + new_dma_addr_list[new] = + pci_map_single(lp->pci_dev, rx_skbuff->data, + PKT_BUF_SIZE, PCI_DMA_FROMDEVICE); + new_rx_ring[new].base = cpu_to_le32(new_dma_addr_list[new]); + new_rx_ring[new].buf_length = cpu_to_le16(NEG_BUF_SIZE); + new_rx_ring[new].status = cpu_to_le16(0x8000); + } + /* and free any unneeded buffers */ + for (; new < lp->rx_ring_size; new++) { + if (lp->rx_skbuff[new]) { + pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[new], + PKT_BUF_SIZE, PCI_DMA_FROMDEVICE); + dev_kfree_skb(lp->rx_skbuff[new]); + } + } + + kfree(lp->rx_skbuff); + kfree(lp->rx_dma_addr); + pci_free_consistent(lp->pci_dev, + sizeof(struct pcnet32_rx_head) * + lp->rx_ring_size, lp->rx_ring, + lp->rx_ring_dma_addr); + + lp->rx_ring_size = (1 << size); + lp->rx_mod_mask = lp->rx_ring_size - 1; + lp->rx_len_bits = (size << 4); + lp->rx_ring = new_rx_ring; + lp->rx_ring_dma_addr = new_ring_dma_addr; + lp->rx_dma_addr = new_dma_addr_list; + lp->rx_skbuff = new_skb_list; + return; + +free_all_new: + while (--new >= lp->rx_ring_size) { + if (new_skb_list[new]) { + pci_unmap_single(lp->pci_dev, new_dma_addr_list[new], + PKT_BUF_SIZE, PCI_DMA_FROMDEVICE); + dev_kfree_skb(new_skb_list[new]); + } + } + kfree(new_skb_list); +free_new_lists: + kfree(new_dma_addr_list); +free_new_rx_ring: + pci_free_consistent(lp->pci_dev, + sizeof(struct pcnet32_rx_head) * + (1 << size), + new_rx_ring, + new_ring_dma_addr); +} + +static void pcnet32_purge_rx_ring(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + int i; + + /* free all allocated skbuffs */ + for (i = 0; i < lp->rx_ring_size; i++) { + lp->rx_ring[i].status = 0; /* CPU owns buffer */ + wmb(); /* Make sure adapter sees owner change */ + if (lp->rx_skbuff[i]) { + pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i], + PKT_BUF_SIZE, PCI_DMA_FROMDEVICE); + dev_kfree_skb_any(lp->rx_skbuff[i]); + } + lp->rx_skbuff[i] = NULL; + lp->rx_dma_addr[i] = 0; + } +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void pcnet32_poll_controller(struct net_device *dev) +{ + disable_irq(dev->irq); + pcnet32_interrupt(0, dev); + enable_irq(dev->irq); +} +#endif + +static int pcnet32_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long flags; + int r = -EOPNOTSUPP; + + if (lp->mii) { + spin_lock_irqsave(&lp->lock, flags); + mii_ethtool_gset(&lp->mii_if, cmd); + spin_unlock_irqrestore(&lp->lock, flags); + r = 0; + } + return r; +} + +static int pcnet32_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long flags; + int r = -EOPNOTSUPP; + + if (lp->mii) { + spin_lock_irqsave(&lp->lock, flags); + r = mii_ethtool_sset(&lp->mii_if, cmd); + spin_unlock_irqrestore(&lp->lock, flags); + } + return r; +} + +static void pcnet32_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + struct pcnet32_private *lp = netdev_priv(dev); + + strcpy(info->driver, DRV_NAME); + strcpy(info->version, DRV_VERSION); + if (lp->pci_dev) + strcpy(info->bus_info, pci_name(lp->pci_dev)); + else + sprintf(info->bus_info, "VLB 0x%lx", dev->base_addr); +} + +static u32 pcnet32_get_link(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long flags; + int r; + + spin_lock_irqsave(&lp->lock, flags); + if (lp->mii) { + r = mii_link_ok(&lp->mii_if); + } else if (lp->chip_version >= PCNET32_79C970A) { + ulong ioaddr = dev->base_addr; /* card base I/O address */ + r = (lp->a->read_bcr(ioaddr, 4) != 0xc0); + } else { /* can not detect link on really old chips */ + r = 1; + } + spin_unlock_irqrestore(&lp->lock, flags); + + return r; +} + +static u32 pcnet32_get_msglevel(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + return lp->msg_enable; +} + +static void pcnet32_set_msglevel(struct net_device *dev, u32 value) +{ + struct pcnet32_private *lp = netdev_priv(dev); + lp->msg_enable = value; +} + +static int pcnet32_nway_reset(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long flags; + int r = -EOPNOTSUPP; + + if (lp->mii) { + spin_lock_irqsave(&lp->lock, flags); + r = mii_nway_restart(&lp->mii_if); + spin_unlock_irqrestore(&lp->lock, flags); + } + return r; +} + +static void pcnet32_get_ringparam(struct net_device *dev, + struct ethtool_ringparam *ering) +{ + struct pcnet32_private *lp = netdev_priv(dev); + + ering->tx_max_pending = TX_MAX_RING_SIZE; + ering->tx_pending = lp->tx_ring_size; + ering->rx_max_pending = RX_MAX_RING_SIZE; + ering->rx_pending = lp->rx_ring_size; +} + +static int pcnet32_set_ringparam(struct net_device *dev, + struct ethtool_ringparam *ering) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long flags; + unsigned int size; + ulong ioaddr = dev->base_addr; + int i; + + if (ering->rx_mini_pending || ering->rx_jumbo_pending) + return -EINVAL; + + if (netif_running(dev)) + pcnet32_netif_stop(dev); + + spin_lock_irqsave(&lp->lock, flags); + lp->a->write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */ + + size = min(ering->tx_pending, (unsigned int)TX_MAX_RING_SIZE); + + /* set the minimum ring size to 4, to allow the loopback test to work + * unchanged. + */ + for (i = 2; i <= PCNET32_LOG_MAX_TX_BUFFERS; i++) { + if (size <= (1 << i)) + break; + } + if ((1 << i) != lp->tx_ring_size) + pcnet32_realloc_tx_ring(dev, lp, i); + + size = min(ering->rx_pending, (unsigned int)RX_MAX_RING_SIZE); + for (i = 2; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) { + if (size <= (1 << i)) + break; + } + if ((1 << i) != lp->rx_ring_size) + pcnet32_realloc_rx_ring(dev, lp, i); + + lp->napi.weight = lp->rx_ring_size / 2; + + if (netif_running(dev)) { + pcnet32_netif_start(dev); + pcnet32_restart(dev, CSR0_NORMAL); + } + + spin_unlock_irqrestore(&lp->lock, flags); + + netif_info(lp, drv, dev, "Ring Param Settings: RX: %d, TX: %d\n", + lp->rx_ring_size, lp->tx_ring_size); + + return 0; +} + +static void pcnet32_get_strings(struct net_device *dev, u32 stringset, + u8 *data) +{ + memcpy(data, pcnet32_gstrings_test, sizeof(pcnet32_gstrings_test)); +} + +static int pcnet32_get_sset_count(struct net_device *dev, int sset) +{ + switch (sset) { + case ETH_SS_TEST: + return PCNET32_TEST_LEN; + default: + return -EOPNOTSUPP; + } +} + +static void pcnet32_ethtool_test(struct net_device *dev, + struct ethtool_test *test, u64 * data) +{ + struct pcnet32_private *lp = netdev_priv(dev); + int rc; + + if (test->flags == ETH_TEST_FL_OFFLINE) { + rc = pcnet32_loopback_test(dev, data); + if (rc) { + netif_printk(lp, hw, KERN_DEBUG, dev, + "Loopback test failed\n"); + test->flags |= ETH_TEST_FL_FAILED; + } else + netif_printk(lp, hw, KERN_DEBUG, dev, + "Loopback test passed\n"); + } else + netif_printk(lp, hw, KERN_DEBUG, dev, + "No tests to run (specify 'Offline' on ethtool)\n"); +} /* end pcnet32_ethtool_test */ + +static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1) +{ + struct pcnet32_private *lp = netdev_priv(dev); + const struct pcnet32_access *a = lp->a; /* access to registers */ + ulong ioaddr = dev->base_addr; /* card base I/O address */ + struct sk_buff *skb; /* sk buff */ + int x, i; /* counters */ + int numbuffs = 4; /* number of TX/RX buffers and descs */ + u16 status = 0x8300; /* TX ring status */ + __le16 teststatus; /* test of ring status */ + int rc; /* return code */ + int size; /* size of packets */ + unsigned char *packet; /* source packet data */ + static const int data_len = 60; /* length of source packets */ + unsigned long flags; + unsigned long ticks; + + rc = 1; /* default to fail */ + + if (netif_running(dev)) + pcnet32_netif_stop(dev); + + spin_lock_irqsave(&lp->lock, flags); + lp->a->write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */ + + numbuffs = min(numbuffs, (int)min(lp->rx_ring_size, lp->tx_ring_size)); + + /* Reset the PCNET32 */ + lp->a->reset(ioaddr); + lp->a->write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */ + + /* switch pcnet32 to 32bit mode */ + lp->a->write_bcr(ioaddr, 20, 2); + + /* purge & init rings but don't actually restart */ + pcnet32_restart(dev, 0x0000); + + lp->a->write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */ + + /* Initialize Transmit buffers. */ + size = data_len + 15; + for (x = 0; x < numbuffs; x++) { + skb = dev_alloc_skb(size); + if (!skb) { + netif_printk(lp, hw, KERN_DEBUG, dev, + "Cannot allocate skb at line: %d!\n", + __LINE__); + goto clean_up; + } + packet = skb->data; + skb_put(skb, size); /* create space for data */ + lp->tx_skbuff[x] = skb; + lp->tx_ring[x].length = cpu_to_le16(-skb->len); + lp->tx_ring[x].misc = 0; + + /* put DA and SA into the skb */ + for (i = 0; i < 6; i++) + *packet++ = dev->dev_addr[i]; + for (i = 0; i < 6; i++) + *packet++ = dev->dev_addr[i]; + /* type */ + *packet++ = 0x08; + *packet++ = 0x06; + /* packet number */ + *packet++ = x; + /* fill packet with data */ + for (i = 0; i < data_len; i++) + *packet++ = i; + + lp->tx_dma_addr[x] = + pci_map_single(lp->pci_dev, skb->data, skb->len, + PCI_DMA_TODEVICE); + lp->tx_ring[x].base = cpu_to_le32(lp->tx_dma_addr[x]); + wmb(); /* Make sure owner changes after all others are visible */ + lp->tx_ring[x].status = cpu_to_le16(status); + } + + x = a->read_bcr(ioaddr, 32); /* set internal loopback in BCR32 */ + a->write_bcr(ioaddr, 32, x | 0x0002); + + /* set int loopback in CSR15 */ + x = a->read_csr(ioaddr, CSR15) & 0xfffc; + lp->a->write_csr(ioaddr, CSR15, x | 0x0044); + + teststatus = cpu_to_le16(0x8000); + lp->a->write_csr(ioaddr, CSR0, CSR0_START); /* Set STRT bit */ + + /* Check status of descriptors */ + for (x = 0; x < numbuffs; x++) { + ticks = 0; + rmb(); + while ((lp->rx_ring[x].status & teststatus) && (ticks < 200)) { + spin_unlock_irqrestore(&lp->lock, flags); + msleep(1); + spin_lock_irqsave(&lp->lock, flags); + rmb(); + ticks++; + } + if (ticks == 200) { + netif_err(lp, hw, dev, "Desc %d failed to reset!\n", x); + break; + } + } + + lp->a->write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */ + wmb(); + if (netif_msg_hw(lp) && netif_msg_pktdata(lp)) { + netdev_printk(KERN_DEBUG, dev, "RX loopback packets:\n"); + + for (x = 0; x < numbuffs; x++) { + netdev_printk(KERN_DEBUG, dev, "Packet %d: ", x); + skb = lp->rx_skbuff[x]; + for (i = 0; i < size; i++) + pr_cont(" %02x", *(skb->data + i)); + pr_cont("\n"); + } + } + + x = 0; + rc = 0; + while (x < numbuffs && !rc) { + skb = lp->rx_skbuff[x]; + packet = lp->tx_skbuff[x]->data; + for (i = 0; i < size; i++) { + if (*(skb->data + i) != packet[i]) { + netif_printk(lp, hw, KERN_DEBUG, dev, + "Error in compare! %2x - %02x %02x\n", + i, *(skb->data + i), packet[i]); + rc = 1; + break; + } + } + x++; + } + +clean_up: + *data1 = rc; + pcnet32_purge_tx_ring(dev); + + x = a->read_csr(ioaddr, CSR15); + a->write_csr(ioaddr, CSR15, (x & ~0x0044)); /* reset bits 6 and 2 */ + + x = a->read_bcr(ioaddr, 32); /* reset internal loopback */ + a->write_bcr(ioaddr, 32, (x & ~0x0002)); + + if (netif_running(dev)) { + pcnet32_netif_start(dev); + pcnet32_restart(dev, CSR0_NORMAL); + } else { + pcnet32_purge_rx_ring(dev); + lp->a->write_bcr(ioaddr, 20, 4); /* return to 16bit mode */ + } + spin_unlock_irqrestore(&lp->lock, flags); + + return rc; +} /* end pcnet32_loopback_test */ + +static int pcnet32_set_phys_id(struct net_device *dev, + enum ethtool_phys_id_state state) +{ + struct pcnet32_private *lp = netdev_priv(dev); + const struct pcnet32_access *a = lp->a; + ulong ioaddr = dev->base_addr; + unsigned long flags; + int i; + + switch (state) { + case ETHTOOL_ID_ACTIVE: + /* Save the current value of the bcrs */ + spin_lock_irqsave(&lp->lock, flags); + for (i = 4; i < 8; i++) + lp->save_regs[i - 4] = a->read_bcr(ioaddr, i); + spin_unlock_irqrestore(&lp->lock, flags); + return 2; /* cycle on/off twice per second */ + + case ETHTOOL_ID_ON: + case ETHTOOL_ID_OFF: + /* Blink the led */ + spin_lock_irqsave(&lp->lock, flags); + for (i = 4; i < 8; i++) + a->write_bcr(ioaddr, i, a->read_bcr(ioaddr, i) ^ 0x4000); + spin_unlock_irqrestore(&lp->lock, flags); + break; + + case ETHTOOL_ID_INACTIVE: + /* Restore the original value of the bcrs */ + spin_lock_irqsave(&lp->lock, flags); + for (i = 4; i < 8; i++) + a->write_bcr(ioaddr, i, lp->save_regs[i - 4]); + spin_unlock_irqrestore(&lp->lock, flags); + } + return 0; +} + +/* + * lp->lock must be held. + */ +static int pcnet32_suspend(struct net_device *dev, unsigned long *flags, + int can_sleep) +{ + int csr5; + struct pcnet32_private *lp = netdev_priv(dev); + const struct pcnet32_access *a = lp->a; + ulong ioaddr = dev->base_addr; + int ticks; + + /* really old chips have to be stopped. */ + if (lp->chip_version < PCNET32_79C970A) + return 0; + + /* set SUSPEND (SPND) - CSR5 bit 0 */ + csr5 = a->read_csr(ioaddr, CSR5); + a->write_csr(ioaddr, CSR5, csr5 | CSR5_SUSPEND); + + /* poll waiting for bit to be set */ + ticks = 0; + while (!(a->read_csr(ioaddr, CSR5) & CSR5_SUSPEND)) { + spin_unlock_irqrestore(&lp->lock, *flags); + if (can_sleep) + msleep(1); + else + mdelay(1); + spin_lock_irqsave(&lp->lock, *flags); + ticks++; + if (ticks > 200) { + netif_printk(lp, hw, KERN_DEBUG, dev, + "Error getting into suspend!\n"); + return 0; + } + } + return 1; +} + +/* + * process one receive descriptor entry + */ + +static void pcnet32_rx_entry(struct net_device *dev, + struct pcnet32_private *lp, + struct pcnet32_rx_head *rxp, + int entry) +{ + int status = (short)le16_to_cpu(rxp->status) >> 8; + int rx_in_place = 0; + struct sk_buff *skb; + short pkt_len; + + if (status != 0x03) { /* There was an error. */ + /* + * There is a tricky error noted by John Murphy, + * <murf@perftech.com> to Russ Nelson: Even with full-sized + * buffers it's possible for a jabber packet to use two + * buffers, with only the last correctly noting the error. + */ + if (status & 0x01) /* Only count a general error at the */ + dev->stats.rx_errors++; /* end of a packet. */ + if (status & 0x20) + dev->stats.rx_frame_errors++; + if (status & 0x10) + dev->stats.rx_over_errors++; + if (status & 0x08) + dev->stats.rx_crc_errors++; + if (status & 0x04) + dev->stats.rx_fifo_errors++; + return; + } + + pkt_len = (le32_to_cpu(rxp->msg_length) & 0xfff) - 4; + + /* Discard oversize frames. */ + if (unlikely(pkt_len > PKT_BUF_SIZE)) { + netif_err(lp, drv, dev, "Impossible packet size %d!\n", + pkt_len); + dev->stats.rx_errors++; + return; + } + if (pkt_len < 60) { + netif_err(lp, rx_err, dev, "Runt packet!\n"); + dev->stats.rx_errors++; + return; + } + + if (pkt_len > rx_copybreak) { + struct sk_buff *newskb; + + newskb = dev_alloc_skb(PKT_BUF_SKB); + if (newskb) { + skb_reserve(newskb, NET_IP_ALIGN); + skb = lp->rx_skbuff[entry]; + pci_unmap_single(lp->pci_dev, + lp->rx_dma_addr[entry], + PKT_BUF_SIZE, + PCI_DMA_FROMDEVICE); + skb_put(skb, pkt_len); + lp->rx_skbuff[entry] = newskb; + lp->rx_dma_addr[entry] = + pci_map_single(lp->pci_dev, + newskb->data, + PKT_BUF_SIZE, + PCI_DMA_FROMDEVICE); + rxp->base = cpu_to_le32(lp->rx_dma_addr[entry]); + rx_in_place = 1; + } else + skb = NULL; + } else + skb = dev_alloc_skb(pkt_len + NET_IP_ALIGN); + + if (skb == NULL) { + netif_err(lp, drv, dev, "Memory squeeze, dropping packet\n"); + dev->stats.rx_dropped++; + return; + } + if (!rx_in_place) { + skb_reserve(skb, NET_IP_ALIGN); + skb_put(skb, pkt_len); /* Make room */ + pci_dma_sync_single_for_cpu(lp->pci_dev, + lp->rx_dma_addr[entry], + pkt_len, + PCI_DMA_FROMDEVICE); + skb_copy_to_linear_data(skb, + (unsigned char *)(lp->rx_skbuff[entry]->data), + pkt_len); + pci_dma_sync_single_for_device(lp->pci_dev, + lp->rx_dma_addr[entry], + pkt_len, + PCI_DMA_FROMDEVICE); + } + dev->stats.rx_bytes += skb->len; + skb->protocol = eth_type_trans(skb, dev); + netif_receive_skb(skb); + dev->stats.rx_packets++; +} + +static int pcnet32_rx(struct net_device *dev, int budget) +{ + struct pcnet32_private *lp = netdev_priv(dev); + int entry = lp->cur_rx & lp->rx_mod_mask; + struct pcnet32_rx_head *rxp = &lp->rx_ring[entry]; + int npackets = 0; + + /* If we own the next entry, it's a new packet. Send it up. */ + while (npackets < budget && (short)le16_to_cpu(rxp->status) >= 0) { + pcnet32_rx_entry(dev, lp, rxp, entry); + npackets += 1; + /* + * The docs say that the buffer length isn't touched, but Andrew + * Boyd of QNX reports that some revs of the 79C965 clear it. + */ + rxp->buf_length = cpu_to_le16(NEG_BUF_SIZE); + wmb(); /* Make sure owner changes after others are visible */ + rxp->status = cpu_to_le16(0x8000); + entry = (++lp->cur_rx) & lp->rx_mod_mask; + rxp = &lp->rx_ring[entry]; + } + + return npackets; +} + +static int pcnet32_tx(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned int dirty_tx = lp->dirty_tx; + int delta; + int must_restart = 0; + + while (dirty_tx != lp->cur_tx) { + int entry = dirty_tx & lp->tx_mod_mask; + int status = (short)le16_to_cpu(lp->tx_ring[entry].status); + + if (status < 0) + break; /* It still hasn't been Txed */ + + lp->tx_ring[entry].base = 0; + + if (status & 0x4000) { + /* There was a major error, log it. */ + int err_status = le32_to_cpu(lp->tx_ring[entry].misc); + dev->stats.tx_errors++; + netif_err(lp, tx_err, dev, + "Tx error status=%04x err_status=%08x\n", + status, err_status); + if (err_status & 0x04000000) + dev->stats.tx_aborted_errors++; + if (err_status & 0x08000000) + dev->stats.tx_carrier_errors++; + if (err_status & 0x10000000) + dev->stats.tx_window_errors++; +#ifndef DO_DXSUFLO + if (err_status & 0x40000000) { + dev->stats.tx_fifo_errors++; + /* Ackk! On FIFO errors the Tx unit is turned off! */ + /* Remove this verbosity later! */ + netif_err(lp, tx_err, dev, "Tx FIFO error!\n"); + must_restart = 1; + } +#else + if (err_status & 0x40000000) { + dev->stats.tx_fifo_errors++; + if (!lp->dxsuflo) { /* If controller doesn't recover ... */ + /* Ackk! On FIFO errors the Tx unit is turned off! */ + /* Remove this verbosity later! */ + netif_err(lp, tx_err, dev, "Tx FIFO error!\n"); + must_restart = 1; + } + } +#endif + } else { + if (status & 0x1800) + dev->stats.collisions++; + dev->stats.tx_packets++; + } + + /* We must free the original skb */ + if (lp->tx_skbuff[entry]) { + pci_unmap_single(lp->pci_dev, + lp->tx_dma_addr[entry], + lp->tx_skbuff[entry]-> + len, PCI_DMA_TODEVICE); + dev_kfree_skb_any(lp->tx_skbuff[entry]); + lp->tx_skbuff[entry] = NULL; + lp->tx_dma_addr[entry] = 0; + } + dirty_tx++; + } + + delta = (lp->cur_tx - dirty_tx) & (lp->tx_mod_mask + lp->tx_ring_size); + if (delta > lp->tx_ring_size) { + netif_err(lp, drv, dev, "out-of-sync dirty pointer, %d vs. %d, full=%d\n", + dirty_tx, lp->cur_tx, lp->tx_full); + dirty_tx += lp->tx_ring_size; + delta -= lp->tx_ring_size; + } + + if (lp->tx_full && + netif_queue_stopped(dev) && + delta < lp->tx_ring_size - 2) { + /* The ring is no longer full, clear tbusy. */ + lp->tx_full = 0; + netif_wake_queue(dev); + } + lp->dirty_tx = dirty_tx; + + return must_restart; +} + +static int pcnet32_poll(struct napi_struct *napi, int budget) +{ + struct pcnet32_private *lp = container_of(napi, struct pcnet32_private, napi); + struct net_device *dev = lp->dev; + unsigned long ioaddr = dev->base_addr; + unsigned long flags; + int work_done; + u16 val; + + work_done = pcnet32_rx(dev, budget); + + spin_lock_irqsave(&lp->lock, flags); + if (pcnet32_tx(dev)) { + /* reset the chip to clear the error condition, then restart */ + lp->a->reset(ioaddr); + lp->a->write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */ + pcnet32_restart(dev, CSR0_START); + netif_wake_queue(dev); + } + spin_unlock_irqrestore(&lp->lock, flags); + + if (work_done < budget) { + spin_lock_irqsave(&lp->lock, flags); + + __napi_complete(napi); + + /* clear interrupt masks */ + val = lp->a->read_csr(ioaddr, CSR3); + val &= 0x00ff; + lp->a->write_csr(ioaddr, CSR3, val); + + /* Set interrupt enable. */ + lp->a->write_csr(ioaddr, CSR0, CSR0_INTEN); + + spin_unlock_irqrestore(&lp->lock, flags); + } + return work_done; +} + +#define PCNET32_REGS_PER_PHY 32 +#define PCNET32_MAX_PHYS 32 +static int pcnet32_get_regs_len(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + int j = lp->phycount * PCNET32_REGS_PER_PHY; + + return (PCNET32_NUM_REGS + j) * sizeof(u16); +} + +static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs, + void *ptr) +{ + int i, csr0; + u16 *buff = ptr; + struct pcnet32_private *lp = netdev_priv(dev); + const struct pcnet32_access *a = lp->a; + ulong ioaddr = dev->base_addr; + unsigned long flags; + + spin_lock_irqsave(&lp->lock, flags); + + csr0 = a->read_csr(ioaddr, CSR0); + if (!(csr0 & CSR0_STOP)) /* If not stopped */ + pcnet32_suspend(dev, &flags, 1); + + /* read address PROM */ + for (i = 0; i < 16; i += 2) + *buff++ = inw(ioaddr + i); + + /* read control and status registers */ + for (i = 0; i < 90; i++) + *buff++ = a->read_csr(ioaddr, i); + + *buff++ = a->read_csr(ioaddr, 112); + *buff++ = a->read_csr(ioaddr, 114); + + /* read bus configuration registers */ + for (i = 0; i < 30; i++) + *buff++ = a->read_bcr(ioaddr, i); + + *buff++ = 0; /* skip bcr30 so as not to hang 79C976 */ + + for (i = 31; i < 36; i++) + *buff++ = a->read_bcr(ioaddr, i); + + /* read mii phy registers */ + if (lp->mii) { + int j; + for (j = 0; j < PCNET32_MAX_PHYS; j++) { + if (lp->phymask & (1 << j)) { + for (i = 0; i < PCNET32_REGS_PER_PHY; i++) { + lp->a->write_bcr(ioaddr, 33, + (j << 5) | i); + *buff++ = lp->a->read_bcr(ioaddr, 34); + } + } + } + } + + if (!(csr0 & CSR0_STOP)) { /* If not stopped */ + int csr5; + + /* clear SUSPEND (SPND) - CSR5 bit 0 */ + csr5 = a->read_csr(ioaddr, CSR5); + a->write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND)); + } + + spin_unlock_irqrestore(&lp->lock, flags); +} + +static const struct ethtool_ops pcnet32_ethtool_ops = { + .get_settings = pcnet32_get_settings, + .set_settings = pcnet32_set_settings, + .get_drvinfo = pcnet32_get_drvinfo, + .get_msglevel = pcnet32_get_msglevel, + .set_msglevel = pcnet32_set_msglevel, + .nway_reset = pcnet32_nway_reset, + .get_link = pcnet32_get_link, + .get_ringparam = pcnet32_get_ringparam, + .set_ringparam = pcnet32_set_ringparam, + .get_strings = pcnet32_get_strings, + .self_test = pcnet32_ethtool_test, + .set_phys_id = pcnet32_set_phys_id, + .get_regs_len = pcnet32_get_regs_len, + .get_regs = pcnet32_get_regs, + .get_sset_count = pcnet32_get_sset_count, +}; + +/* only probes for non-PCI devices, the rest are handled by + * pci_register_driver via pcnet32_probe_pci */ + +static void __devinit pcnet32_probe_vlbus(unsigned int *pcnet32_portlist) +{ + unsigned int *port, ioaddr; + + /* search for PCnet32 VLB cards at known addresses */ + for (port = pcnet32_portlist; (ioaddr = *port); port++) { + if (request_region + (ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_vlbus")) { + /* check if there is really a pcnet chip on that ioaddr */ + if ((inb(ioaddr + 14) == 0x57) && + (inb(ioaddr + 15) == 0x57)) { + pcnet32_probe1(ioaddr, 0, NULL); + } else { + release_region(ioaddr, PCNET32_TOTAL_SIZE); + } + } + } +} + +static int __devinit +pcnet32_probe_pci(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + unsigned long ioaddr; + int err; + + err = pci_enable_device(pdev); + if (err < 0) { + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_err("failed to enable device -- err=%d\n", err); + return err; + } + pci_set_master(pdev); + + ioaddr = pci_resource_start(pdev, 0); + if (!ioaddr) { + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_err("card has no PCI IO resources, aborting\n"); + return -ENODEV; + } + + if (!pci_dma_supported(pdev, PCNET32_DMA_MASK)) { + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_err("architecture does not support 32bit PCI busmaster DMA\n"); + return -ENODEV; + } + if (!request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_pci")) { + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_err("io address range already allocated\n"); + return -EBUSY; + } + + err = pcnet32_probe1(ioaddr, 1, pdev); + if (err < 0) + pci_disable_device(pdev); + + return err; +} + +static const struct net_device_ops pcnet32_netdev_ops = { + .ndo_open = pcnet32_open, + .ndo_stop = pcnet32_close, + .ndo_start_xmit = pcnet32_start_xmit, + .ndo_tx_timeout = pcnet32_tx_timeout, + .ndo_get_stats = pcnet32_get_stats, + .ndo_set_rx_mode = pcnet32_set_multicast_list, + .ndo_do_ioctl = pcnet32_ioctl, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = pcnet32_poll_controller, +#endif +}; + +/* pcnet32_probe1 + * Called from both pcnet32_probe_vlbus and pcnet_probe_pci. + * pdev will be NULL when called from pcnet32_probe_vlbus. + */ +static int __devinit +pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev) +{ + struct pcnet32_private *lp; + int i, media; + int fdx, mii, fset, dxsuflo; + int chip_version; + char *chipname; + struct net_device *dev; + const struct pcnet32_access *a = NULL; + u8 promaddr[6]; + int ret = -ENODEV; + + /* reset the chip */ + pcnet32_wio_reset(ioaddr); + + /* NOTE: 16-bit check is first, otherwise some older PCnet chips fail */ + if (pcnet32_wio_read_csr(ioaddr, 0) == 4 && pcnet32_wio_check(ioaddr)) { + a = &pcnet32_wio; + } else { + pcnet32_dwio_reset(ioaddr); + if (pcnet32_dwio_read_csr(ioaddr, 0) == 4 && + pcnet32_dwio_check(ioaddr)) { + a = &pcnet32_dwio; + } else { + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_err("No access methods\n"); + goto err_release_region; + } + } + + chip_version = + a->read_csr(ioaddr, 88) | (a->read_csr(ioaddr, 89) << 16); + if ((pcnet32_debug & NETIF_MSG_PROBE) && (pcnet32_debug & NETIF_MSG_HW)) + pr_info(" PCnet chip version is %#x\n", chip_version); + if ((chip_version & 0xfff) != 0x003) { + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_info("Unsupported chip version\n"); + goto err_release_region; + } + + /* initialize variables */ + fdx = mii = fset = dxsuflo = 0; + chip_version = (chip_version >> 12) & 0xffff; + + switch (chip_version) { + case 0x2420: + chipname = "PCnet/PCI 79C970"; /* PCI */ + break; + case 0x2430: + if (shared) + chipname = "PCnet/PCI 79C970"; /* 970 gives the wrong chip id back */ + else + chipname = "PCnet/32 79C965"; /* 486/VL bus */ + break; + case 0x2621: + chipname = "PCnet/PCI II 79C970A"; /* PCI */ + fdx = 1; + break; + case 0x2623: + chipname = "PCnet/FAST 79C971"; /* PCI */ + fdx = 1; + mii = 1; + fset = 1; + break; + case 0x2624: + chipname = "PCnet/FAST+ 79C972"; /* PCI */ + fdx = 1; + mii = 1; + fset = 1; + break; + case 0x2625: + chipname = "PCnet/FAST III 79C973"; /* PCI */ + fdx = 1; + mii = 1; + break; + case 0x2626: + chipname = "PCnet/Home 79C978"; /* PCI */ + fdx = 1; + /* + * This is based on specs published at www.amd.com. This section + * assumes that a card with a 79C978 wants to go into standard + * ethernet mode. The 79C978 can also go into 1Mb HomePNA mode, + * and the module option homepna=1 can select this instead. + */ + media = a->read_bcr(ioaddr, 49); + media &= ~3; /* default to 10Mb ethernet */ + if (cards_found < MAX_UNITS && homepna[cards_found]) + media |= 1; /* switch to home wiring mode */ + if (pcnet32_debug & NETIF_MSG_PROBE) + printk(KERN_DEBUG PFX "media set to %sMbit mode\n", + (media & 1) ? "1" : "10"); + a->write_bcr(ioaddr, 49, media); + break; + case 0x2627: + chipname = "PCnet/FAST III 79C975"; /* PCI */ + fdx = 1; + mii = 1; + break; + case 0x2628: + chipname = "PCnet/PRO 79C976"; + fdx = 1; + mii = 1; + break; + default: + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_info("PCnet version %#x, no PCnet32 chip\n", + chip_version); + goto err_release_region; + } + + /* + * On selected chips turn on the BCR18:NOUFLO bit. This stops transmit + * starting until the packet is loaded. Strike one for reliability, lose + * one for latency - although on PCI this isn't a big loss. Older chips + * have FIFO's smaller than a packet, so you can't do this. + * Turn on BCR18:BurstRdEn and BCR18:BurstWrEn. + */ + + if (fset) { + a->write_bcr(ioaddr, 18, (a->read_bcr(ioaddr, 18) | 0x0860)); + a->write_csr(ioaddr, 80, + (a->read_csr(ioaddr, 80) & 0x0C00) | 0x0c00); + dxsuflo = 1; + } + + dev = alloc_etherdev(sizeof(*lp)); + if (!dev) { + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_err("Memory allocation failed\n"); + ret = -ENOMEM; + goto err_release_region; + } + + if (pdev) + SET_NETDEV_DEV(dev, &pdev->dev); + + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_info("%s at %#3lx,", chipname, ioaddr); + + /* In most chips, after a chip reset, the ethernet address is read from the + * station address PROM at the base address and programmed into the + * "Physical Address Registers" CSR12-14. + * As a precautionary measure, we read the PROM values and complain if + * they disagree with the CSRs. If they miscompare, and the PROM addr + * is valid, then the PROM addr is used. + */ + for (i = 0; i < 3; i++) { + unsigned int val; + val = a->read_csr(ioaddr, i + 12) & 0x0ffff; + /* There may be endianness issues here. */ + dev->dev_addr[2 * i] = val & 0x0ff; + dev->dev_addr[2 * i + 1] = (val >> 8) & 0x0ff; + } + + /* read PROM address and compare with CSR address */ + for (i = 0; i < 6; i++) + promaddr[i] = inb(ioaddr + i); + + if (memcmp(promaddr, dev->dev_addr, 6) || + !is_valid_ether_addr(dev->dev_addr)) { + if (is_valid_ether_addr(promaddr)) { + if (pcnet32_debug & NETIF_MSG_PROBE) { + pr_cont(" warning: CSR address invalid,\n"); + pr_info(" using instead PROM address of"); + } + memcpy(dev->dev_addr, promaddr, 6); + } + } + memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); + + /* if the ethernet address is not valid, force to 00:00:00:00:00:00 */ + if (!is_valid_ether_addr(dev->perm_addr)) + memset(dev->dev_addr, 0, ETH_ALEN); + + if (pcnet32_debug & NETIF_MSG_PROBE) { + pr_cont(" %pM", dev->dev_addr); + + /* Version 0x2623 and 0x2624 */ + if (((chip_version + 1) & 0xfffe) == 0x2624) { + i = a->read_csr(ioaddr, 80) & 0x0C00; /* Check tx_start_pt */ + pr_info(" tx_start_pt(0x%04x):", i); + switch (i >> 10) { + case 0: + pr_cont(" 20 bytes,"); + break; + case 1: + pr_cont(" 64 bytes,"); + break; + case 2: + pr_cont(" 128 bytes,"); + break; + case 3: + pr_cont("~220 bytes,"); + break; + } + i = a->read_bcr(ioaddr, 18); /* Check Burst/Bus control */ + pr_cont(" BCR18(%x):", i & 0xffff); + if (i & (1 << 5)) + pr_cont("BurstWrEn "); + if (i & (1 << 6)) + pr_cont("BurstRdEn "); + if (i & (1 << 7)) + pr_cont("DWordIO "); + if (i & (1 << 11)) + pr_cont("NoUFlow "); + i = a->read_bcr(ioaddr, 25); + pr_info(" SRAMSIZE=0x%04x,", i << 8); + i = a->read_bcr(ioaddr, 26); + pr_cont(" SRAM_BND=0x%04x,", i << 8); + i = a->read_bcr(ioaddr, 27); + if (i & (1 << 14)) + pr_cont("LowLatRx"); + } + } + + dev->base_addr = ioaddr; + lp = netdev_priv(dev); + /* pci_alloc_consistent returns page-aligned memory, so we do not have to check the alignment */ + lp->init_block = pci_alloc_consistent(pdev, sizeof(*lp->init_block), + &lp->init_dma_addr); + if (!lp->init_block) { + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_err("Consistent memory allocation failed\n"); + ret = -ENOMEM; + goto err_free_netdev; + } + lp->pci_dev = pdev; + + lp->dev = dev; + + spin_lock_init(&lp->lock); + + lp->name = chipname; + lp->shared_irq = shared; + lp->tx_ring_size = TX_RING_SIZE; /* default tx ring size */ + lp->rx_ring_size = RX_RING_SIZE; /* default rx ring size */ + lp->tx_mod_mask = lp->tx_ring_size - 1; + lp->rx_mod_mask = lp->rx_ring_size - 1; + lp->tx_len_bits = (PCNET32_LOG_TX_BUFFERS << 12); + lp->rx_len_bits = (PCNET32_LOG_RX_BUFFERS << 4); + lp->mii_if.full_duplex = fdx; + lp->mii_if.phy_id_mask = 0x1f; + lp->mii_if.reg_num_mask = 0x1f; + lp->dxsuflo = dxsuflo; + lp->mii = mii; + lp->chip_version = chip_version; + lp->msg_enable = pcnet32_debug; + if ((cards_found >= MAX_UNITS) || + (options[cards_found] >= sizeof(options_mapping))) + lp->options = PCNET32_PORT_ASEL; + else + lp->options = options_mapping[options[cards_found]]; + lp->mii_if.dev = dev; + lp->mii_if.mdio_read = mdio_read; + lp->mii_if.mdio_write = mdio_write; + + /* napi.weight is used in both the napi and non-napi cases */ + lp->napi.weight = lp->rx_ring_size / 2; + + netif_napi_add(dev, &lp->napi, pcnet32_poll, lp->rx_ring_size / 2); + + if (fdx && !(lp->options & PCNET32_PORT_ASEL) && + ((cards_found >= MAX_UNITS) || full_duplex[cards_found])) + lp->options |= PCNET32_PORT_FD; + + lp->a = a; + + /* prior to register_netdev, dev->name is not yet correct */ + if (pcnet32_alloc_ring(dev, pci_name(lp->pci_dev))) { + ret = -ENOMEM; + goto err_free_ring; + } + /* detect special T1/E1 WAN card by checking for MAC address */ + if (dev->dev_addr[0] == 0x00 && dev->dev_addr[1] == 0xe0 && + dev->dev_addr[2] == 0x75) + lp->options = PCNET32_PORT_FD | PCNET32_PORT_GPSI; + + lp->init_block->mode = cpu_to_le16(0x0003); /* Disable Rx and Tx. */ + lp->init_block->tlen_rlen = + cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits); + for (i = 0; i < 6; i++) + lp->init_block->phys_addr[i] = dev->dev_addr[i]; + lp->init_block->filter[0] = 0x00000000; + lp->init_block->filter[1] = 0x00000000; + lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr); + lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr); + + /* switch pcnet32 to 32bit mode */ + a->write_bcr(ioaddr, 20, 2); + + a->write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff)); + a->write_csr(ioaddr, 2, (lp->init_dma_addr >> 16)); + + if (pdev) { /* use the IRQ provided by PCI */ + dev->irq = pdev->irq; + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_cont(" assigned IRQ %d\n", dev->irq); + } else { + unsigned long irq_mask = probe_irq_on(); + + /* + * To auto-IRQ we enable the initialization-done and DMA error + * interrupts. For ISA boards we get a DMA error, but VLB and PCI + * boards will work. + */ + /* Trigger an initialization just for the interrupt. */ + a->write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_INIT); + mdelay(1); + + dev->irq = probe_irq_off(irq_mask); + if (!dev->irq) { + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_cont(", failed to detect IRQ line\n"); + ret = -ENODEV; + goto err_free_ring; + } + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_cont(", probed IRQ %d\n", dev->irq); + } + + /* Set the mii phy_id so that we can query the link state */ + if (lp->mii) { + /* lp->phycount and lp->phymask are set to 0 by memset above */ + + lp->mii_if.phy_id = ((lp->a->read_bcr(ioaddr, 33)) >> 5) & 0x1f; + /* scan for PHYs */ + for (i = 0; i < PCNET32_MAX_PHYS; i++) { + unsigned short id1, id2; + + id1 = mdio_read(dev, i, MII_PHYSID1); + if (id1 == 0xffff) + continue; + id2 = mdio_read(dev, i, MII_PHYSID2); + if (id2 == 0xffff) + continue; + if (i == 31 && ((chip_version + 1) & 0xfffe) == 0x2624) + continue; /* 79C971 & 79C972 have phantom phy at id 31 */ + lp->phycount++; + lp->phymask |= (1 << i); + lp->mii_if.phy_id = i; + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_info("Found PHY %04x:%04x at address %d\n", + id1, id2, i); + } + lp->a->write_bcr(ioaddr, 33, (lp->mii_if.phy_id) << 5); + if (lp->phycount > 1) + lp->options |= PCNET32_PORT_MII; + } + + init_timer(&lp->watchdog_timer); + lp->watchdog_timer.data = (unsigned long)dev; + lp->watchdog_timer.function = (void *)&pcnet32_watchdog; + + /* The PCNET32-specific entries in the device structure. */ + dev->netdev_ops = &pcnet32_netdev_ops; + dev->ethtool_ops = &pcnet32_ethtool_ops; + dev->watchdog_timeo = (5 * HZ); + + /* Fill in the generic fields of the device structure. */ + if (register_netdev(dev)) + goto err_free_ring; + + if (pdev) { + pci_set_drvdata(pdev, dev); + } else { + lp->next = pcnet32_dev; + pcnet32_dev = dev; + } + + if (pcnet32_debug & NETIF_MSG_PROBE) + pr_info("%s: registered as %s\n", dev->name, lp->name); + cards_found++; + + /* enable LED writes */ + a->write_bcr(ioaddr, 2, a->read_bcr(ioaddr, 2) | 0x1000); + + return 0; + +err_free_ring: + pcnet32_free_ring(dev); + pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block), + lp->init_block, lp->init_dma_addr); +err_free_netdev: + free_netdev(dev); +err_release_region: + release_region(ioaddr, PCNET32_TOTAL_SIZE); + return ret; +} + +/* if any allocation fails, caller must also call pcnet32_free_ring */ +static int pcnet32_alloc_ring(struct net_device *dev, const char *name) +{ + struct pcnet32_private *lp = netdev_priv(dev); + + lp->tx_ring = pci_alloc_consistent(lp->pci_dev, + sizeof(struct pcnet32_tx_head) * + lp->tx_ring_size, + &lp->tx_ring_dma_addr); + if (lp->tx_ring == NULL) { + netif_err(lp, drv, dev, "Consistent memory allocation failed\n"); + return -ENOMEM; + } + + lp->rx_ring = pci_alloc_consistent(lp->pci_dev, + sizeof(struct pcnet32_rx_head) * + lp->rx_ring_size, + &lp->rx_ring_dma_addr); + if (lp->rx_ring == NULL) { + netif_err(lp, drv, dev, "Consistent memory allocation failed\n"); + return -ENOMEM; + } + + lp->tx_dma_addr = kcalloc(lp->tx_ring_size, sizeof(dma_addr_t), + GFP_ATOMIC); + if (!lp->tx_dma_addr) { + netif_err(lp, drv, dev, "Memory allocation failed\n"); + return -ENOMEM; + } + + lp->rx_dma_addr = kcalloc(lp->rx_ring_size, sizeof(dma_addr_t), + GFP_ATOMIC); + if (!lp->rx_dma_addr) { + netif_err(lp, drv, dev, "Memory allocation failed\n"); + return -ENOMEM; + } + + lp->tx_skbuff = kcalloc(lp->tx_ring_size, sizeof(struct sk_buff *), + GFP_ATOMIC); + if (!lp->tx_skbuff) { + netif_err(lp, drv, dev, "Memory allocation failed\n"); + return -ENOMEM; + } + + lp->rx_skbuff = kcalloc(lp->rx_ring_size, sizeof(struct sk_buff *), + GFP_ATOMIC); + if (!lp->rx_skbuff) { + netif_err(lp, drv, dev, "Memory allocation failed\n"); + return -ENOMEM; + } + + return 0; +} + +static void pcnet32_free_ring(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + + kfree(lp->tx_skbuff); + lp->tx_skbuff = NULL; + + kfree(lp->rx_skbuff); + lp->rx_skbuff = NULL; + + kfree(lp->tx_dma_addr); + lp->tx_dma_addr = NULL; + + kfree(lp->rx_dma_addr); + lp->rx_dma_addr = NULL; + + if (lp->tx_ring) { + pci_free_consistent(lp->pci_dev, + sizeof(struct pcnet32_tx_head) * + lp->tx_ring_size, lp->tx_ring, + lp->tx_ring_dma_addr); + lp->tx_ring = NULL; + } + + if (lp->rx_ring) { + pci_free_consistent(lp->pci_dev, + sizeof(struct pcnet32_rx_head) * + lp->rx_ring_size, lp->rx_ring, + lp->rx_ring_dma_addr); + lp->rx_ring = NULL; + } +} + +static int pcnet32_open(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + struct pci_dev *pdev = lp->pci_dev; + unsigned long ioaddr = dev->base_addr; + u16 val; + int i; + int rc; + unsigned long flags; + + if (request_irq(dev->irq, pcnet32_interrupt, + lp->shared_irq ? IRQF_SHARED : 0, dev->name, + (void *)dev)) { + return -EAGAIN; + } + + spin_lock_irqsave(&lp->lock, flags); + /* Check for a valid station address */ + if (!is_valid_ether_addr(dev->dev_addr)) { + rc = -EINVAL; + goto err_free_irq; + } + + /* Reset the PCNET32 */ + lp->a->reset(ioaddr); + + /* switch pcnet32 to 32bit mode */ + lp->a->write_bcr(ioaddr, 20, 2); + + netif_printk(lp, ifup, KERN_DEBUG, dev, + "%s() irq %d tx/rx rings %#x/%#x init %#x\n", + __func__, dev->irq, (u32) (lp->tx_ring_dma_addr), + (u32) (lp->rx_ring_dma_addr), + (u32) (lp->init_dma_addr)); + + /* set/reset autoselect bit */ + val = lp->a->read_bcr(ioaddr, 2) & ~2; + if (lp->options & PCNET32_PORT_ASEL) + val |= 2; + lp->a->write_bcr(ioaddr, 2, val); + + /* handle full duplex setting */ + if (lp->mii_if.full_duplex) { + val = lp->a->read_bcr(ioaddr, 9) & ~3; + if (lp->options & PCNET32_PORT_FD) { + val |= 1; + if (lp->options == (PCNET32_PORT_FD | PCNET32_PORT_AUI)) + val |= 2; + } else if (lp->options & PCNET32_PORT_ASEL) { + /* workaround of xSeries250, turn on for 79C975 only */ + if (lp->chip_version == 0x2627) + val |= 3; + } + lp->a->write_bcr(ioaddr, 9, val); + } + + /* set/reset GPSI bit in test register */ + val = lp->a->read_csr(ioaddr, 124) & ~0x10; + if ((lp->options & PCNET32_PORT_PORTSEL) == PCNET32_PORT_GPSI) + val |= 0x10; + lp->a->write_csr(ioaddr, 124, val); + + /* Allied Telesyn AT 2700/2701 FX are 100Mbit only and do not negotiate */ + if (pdev && pdev->subsystem_vendor == PCI_VENDOR_ID_AT && + (pdev->subsystem_device == PCI_SUBDEVICE_ID_AT_2700FX || + pdev->subsystem_device == PCI_SUBDEVICE_ID_AT_2701FX)) { + if (lp->options & PCNET32_PORT_ASEL) { + lp->options = PCNET32_PORT_FD | PCNET32_PORT_100; + netif_printk(lp, link, KERN_DEBUG, dev, + "Setting 100Mb-Full Duplex\n"); + } + } + if (lp->phycount < 2) { + /* + * 24 Jun 2004 according AMD, in order to change the PHY, + * DANAS (or DISPM for 79C976) must be set; then select the speed, + * duplex, and/or enable auto negotiation, and clear DANAS + */ + if (lp->mii && !(lp->options & PCNET32_PORT_ASEL)) { + lp->a->write_bcr(ioaddr, 32, + lp->a->read_bcr(ioaddr, 32) | 0x0080); + /* disable Auto Negotiation, set 10Mpbs, HD */ + val = lp->a->read_bcr(ioaddr, 32) & ~0xb8; + if (lp->options & PCNET32_PORT_FD) + val |= 0x10; + if (lp->options & PCNET32_PORT_100) + val |= 0x08; + lp->a->write_bcr(ioaddr, 32, val); + } else { + if (lp->options & PCNET32_PORT_ASEL) { + lp->a->write_bcr(ioaddr, 32, + lp->a->read_bcr(ioaddr, + 32) | 0x0080); + /* enable auto negotiate, setup, disable fd */ + val = lp->a->read_bcr(ioaddr, 32) & ~0x98; + val |= 0x20; + lp->a->write_bcr(ioaddr, 32, val); + } + } + } else { + int first_phy = -1; + u16 bmcr; + u32 bcr9; + struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; + + /* + * There is really no good other way to handle multiple PHYs + * other than turning off all automatics + */ + val = lp->a->read_bcr(ioaddr, 2); + lp->a->write_bcr(ioaddr, 2, val & ~2); + val = lp->a->read_bcr(ioaddr, 32); + lp->a->write_bcr(ioaddr, 32, val & ~(1 << 7)); /* stop MII manager */ + + if (!(lp->options & PCNET32_PORT_ASEL)) { + /* setup ecmd */ + ecmd.port = PORT_MII; + ecmd.transceiver = XCVR_INTERNAL; + ecmd.autoneg = AUTONEG_DISABLE; + ethtool_cmd_speed_set(&ecmd, + (lp->options & PCNET32_PORT_100) ? + SPEED_100 : SPEED_10); + bcr9 = lp->a->read_bcr(ioaddr, 9); + + if (lp->options & PCNET32_PORT_FD) { + ecmd.duplex = DUPLEX_FULL; + bcr9 |= (1 << 0); + } else { + ecmd.duplex = DUPLEX_HALF; + bcr9 |= ~(1 << 0); + } + lp->a->write_bcr(ioaddr, 9, bcr9); + } + + for (i = 0; i < PCNET32_MAX_PHYS; i++) { + if (lp->phymask & (1 << i)) { + /* isolate all but the first PHY */ + bmcr = mdio_read(dev, i, MII_BMCR); + if (first_phy == -1) { + first_phy = i; + mdio_write(dev, i, MII_BMCR, + bmcr & ~BMCR_ISOLATE); + } else { + mdio_write(dev, i, MII_BMCR, + bmcr | BMCR_ISOLATE); + } + /* use mii_ethtool_sset to setup PHY */ + lp->mii_if.phy_id = i; + ecmd.phy_address = i; + if (lp->options & PCNET32_PORT_ASEL) { + mii_ethtool_gset(&lp->mii_if, &ecmd); + ecmd.autoneg = AUTONEG_ENABLE; + } + mii_ethtool_sset(&lp->mii_if, &ecmd); + } + } + lp->mii_if.phy_id = first_phy; + netif_info(lp, link, dev, "Using PHY number %d\n", first_phy); + } + +#ifdef DO_DXSUFLO + if (lp->dxsuflo) { /* Disable transmit stop on underflow */ + val = lp->a->read_csr(ioaddr, CSR3); + val |= 0x40; + lp->a->write_csr(ioaddr, CSR3, val); + } +#endif + + lp->init_block->mode = + cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7); + pcnet32_load_multicast(dev); + + if (pcnet32_init_ring(dev)) { + rc = -ENOMEM; + goto err_free_ring; + } + + napi_enable(&lp->napi); + + /* Re-initialize the PCNET32, and start it when done. */ + lp->a->write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff)); + lp->a->write_csr(ioaddr, 2, (lp->init_dma_addr >> 16)); + + lp->a->write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */ + lp->a->write_csr(ioaddr, CSR0, CSR0_INIT); + + netif_start_queue(dev); + + if (lp->chip_version >= PCNET32_79C970A) { + /* Print the link status and start the watchdog */ + pcnet32_check_media(dev, 1); + mod_timer(&lp->watchdog_timer, PCNET32_WATCHDOG_TIMEOUT); + } + + i = 0; + while (i++ < 100) + if (lp->a->read_csr(ioaddr, CSR0) & CSR0_IDON) + break; + /* + * We used to clear the InitDone bit, 0x0100, here but Mark Stockton + * reports that doing so triggers a bug in the '974. + */ + lp->a->write_csr(ioaddr, CSR0, CSR0_NORMAL); + + netif_printk(lp, ifup, KERN_DEBUG, dev, + "pcnet32 open after %d ticks, init block %#x csr0 %4.4x\n", + i, + (u32) (lp->init_dma_addr), + lp->a->read_csr(ioaddr, CSR0)); + + spin_unlock_irqrestore(&lp->lock, flags); + + return 0; /* Always succeed */ + +err_free_ring: + /* free any allocated skbuffs */ + pcnet32_purge_rx_ring(dev); + + /* + * Switch back to 16bit mode to avoid problems with dumb + * DOS packet driver after a warm reboot + */ + lp->a->write_bcr(ioaddr, 20, 4); + +err_free_irq: + spin_unlock_irqrestore(&lp->lock, flags); + free_irq(dev->irq, dev); + return rc; +} + +/* + * The LANCE has been halted for one reason or another (busmaster memory + * arbitration error, Tx FIFO underflow, driver stopped it to reconfigure, + * etc.). Modern LANCE variants always reload their ring-buffer + * configuration when restarted, so we must reinitialize our ring + * context before restarting. As part of this reinitialization, + * find all packets still on the Tx ring and pretend that they had been + * sent (in effect, drop the packets on the floor) - the higher-level + * protocols will time out and retransmit. It'd be better to shuffle + * these skbs to a temp list and then actually re-Tx them after + * restarting the chip, but I'm too lazy to do so right now. dplatt@3do.com + */ + +static void pcnet32_purge_tx_ring(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + int i; + + for (i = 0; i < lp->tx_ring_size; i++) { + lp->tx_ring[i].status = 0; /* CPU owns buffer */ + wmb(); /* Make sure adapter sees owner change */ + if (lp->tx_skbuff[i]) { + pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[i], + lp->tx_skbuff[i]->len, + PCI_DMA_TODEVICE); + dev_kfree_skb_any(lp->tx_skbuff[i]); + } + lp->tx_skbuff[i] = NULL; + lp->tx_dma_addr[i] = 0; + } +} + +/* Initialize the PCNET32 Rx and Tx rings. */ +static int pcnet32_init_ring(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + int i; + + lp->tx_full = 0; + lp->cur_rx = lp->cur_tx = 0; + lp->dirty_rx = lp->dirty_tx = 0; + + for (i = 0; i < lp->rx_ring_size; i++) { + struct sk_buff *rx_skbuff = lp->rx_skbuff[i]; + if (rx_skbuff == NULL) { + lp->rx_skbuff[i] = dev_alloc_skb(PKT_BUF_SKB); + rx_skbuff = lp->rx_skbuff[i]; + if (!rx_skbuff) { + /* there is not much we can do at this point */ + netif_err(lp, drv, dev, "%s dev_alloc_skb failed\n", + __func__); + return -1; + } + skb_reserve(rx_skbuff, NET_IP_ALIGN); + } + + rmb(); + if (lp->rx_dma_addr[i] == 0) + lp->rx_dma_addr[i] = + pci_map_single(lp->pci_dev, rx_skbuff->data, + PKT_BUF_SIZE, PCI_DMA_FROMDEVICE); + lp->rx_ring[i].base = cpu_to_le32(lp->rx_dma_addr[i]); + lp->rx_ring[i].buf_length = cpu_to_le16(NEG_BUF_SIZE); + wmb(); /* Make sure owner changes after all others are visible */ + lp->rx_ring[i].status = cpu_to_le16(0x8000); + } + /* The Tx buffer address is filled in as needed, but we do need to clear + * the upper ownership bit. */ + for (i = 0; i < lp->tx_ring_size; i++) { + lp->tx_ring[i].status = 0; /* CPU owns buffer */ + wmb(); /* Make sure adapter sees owner change */ + lp->tx_ring[i].base = 0; + lp->tx_dma_addr[i] = 0; + } + + lp->init_block->tlen_rlen = + cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits); + for (i = 0; i < 6; i++) + lp->init_block->phys_addr[i] = dev->dev_addr[i]; + lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr); + lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr); + wmb(); /* Make sure all changes are visible */ + return 0; +} + +/* the pcnet32 has been issued a stop or reset. Wait for the stop bit + * then flush the pending transmit operations, re-initialize the ring, + * and tell the chip to initialize. + */ +static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + int i; + + /* wait for stop */ + for (i = 0; i < 100; i++) + if (lp->a->read_csr(ioaddr, CSR0) & CSR0_STOP) + break; + + if (i >= 100) + netif_err(lp, drv, dev, "%s timed out waiting for stop\n", + __func__); + + pcnet32_purge_tx_ring(dev); + if (pcnet32_init_ring(dev)) + return; + + /* ReInit Ring */ + lp->a->write_csr(ioaddr, CSR0, CSR0_INIT); + i = 0; + while (i++ < 1000) + if (lp->a->read_csr(ioaddr, CSR0) & CSR0_IDON) + break; + + lp->a->write_csr(ioaddr, CSR0, csr0_bits); +} + +static void pcnet32_tx_timeout(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr, flags; + + spin_lock_irqsave(&lp->lock, flags); + /* Transmitter timeout, serious problems. */ + if (pcnet32_debug & NETIF_MSG_DRV) + pr_err("%s: transmit timed out, status %4.4x, resetting\n", + dev->name, lp->a->read_csr(ioaddr, CSR0)); + lp->a->write_csr(ioaddr, CSR0, CSR0_STOP); + dev->stats.tx_errors++; + if (netif_msg_tx_err(lp)) { + int i; + printk(KERN_DEBUG + " Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.", + lp->dirty_tx, lp->cur_tx, lp->tx_full ? " (full)" : "", + lp->cur_rx); + for (i = 0; i < lp->rx_ring_size; i++) + printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ", + le32_to_cpu(lp->rx_ring[i].base), + (-le16_to_cpu(lp->rx_ring[i].buf_length)) & + 0xffff, le32_to_cpu(lp->rx_ring[i].msg_length), + le16_to_cpu(lp->rx_ring[i].status)); + for (i = 0; i < lp->tx_ring_size; i++) + printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ", + le32_to_cpu(lp->tx_ring[i].base), + (-le16_to_cpu(lp->tx_ring[i].length)) & 0xffff, + le32_to_cpu(lp->tx_ring[i].misc), + le16_to_cpu(lp->tx_ring[i].status)); + printk("\n"); + } + pcnet32_restart(dev, CSR0_NORMAL); + + dev->trans_start = jiffies; /* prevent tx timeout */ + netif_wake_queue(dev); + + spin_unlock_irqrestore(&lp->lock, flags); +} + +static netdev_tx_t pcnet32_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + u16 status; + int entry; + unsigned long flags; + + spin_lock_irqsave(&lp->lock, flags); + + netif_printk(lp, tx_queued, KERN_DEBUG, dev, + "%s() called, csr0 %4.4x\n", + __func__, lp->a->read_csr(ioaddr, CSR0)); + + /* Default status -- will not enable Successful-TxDone + * interrupt when that option is available to us. + */ + status = 0x8300; + + /* Fill in a Tx ring entry */ + + /* Mask to ring buffer boundary. */ + entry = lp->cur_tx & lp->tx_mod_mask; + + /* Caution: the write order is important here, set the status + * with the "ownership" bits last. */ + + lp->tx_ring[entry].length = cpu_to_le16(-skb->len); + + lp->tx_ring[entry].misc = 0x00000000; + + lp->tx_skbuff[entry] = skb; + lp->tx_dma_addr[entry] = + pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE); + lp->tx_ring[entry].base = cpu_to_le32(lp->tx_dma_addr[entry]); + wmb(); /* Make sure owner changes after all others are visible */ + lp->tx_ring[entry].status = cpu_to_le16(status); + + lp->cur_tx++; + dev->stats.tx_bytes += skb->len; + + /* Trigger an immediate send poll. */ + lp->a->write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL); + + if (lp->tx_ring[(entry + 1) & lp->tx_mod_mask].base != 0) { + lp->tx_full = 1; + netif_stop_queue(dev); + } + spin_unlock_irqrestore(&lp->lock, flags); + return NETDEV_TX_OK; +} + +/* The PCNET32 interrupt handler. */ +static irqreturn_t +pcnet32_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct pcnet32_private *lp; + unsigned long ioaddr; + u16 csr0; + int boguscnt = max_interrupt_work; + + ioaddr = dev->base_addr; + lp = netdev_priv(dev); + + spin_lock(&lp->lock); + + csr0 = lp->a->read_csr(ioaddr, CSR0); + while ((csr0 & 0x8f00) && --boguscnt >= 0) { + if (csr0 == 0xffff) + break; /* PCMCIA remove happened */ + /* Acknowledge all of the current interrupt sources ASAP. */ + lp->a->write_csr(ioaddr, CSR0, csr0 & ~0x004f); + + netif_printk(lp, intr, KERN_DEBUG, dev, + "interrupt csr0=%#2.2x new csr=%#2.2x\n", + csr0, lp->a->read_csr(ioaddr, CSR0)); + + /* Log misc errors. */ + if (csr0 & 0x4000) + dev->stats.tx_errors++; /* Tx babble. */ + if (csr0 & 0x1000) { + /* + * This happens when our receive ring is full. This + * shouldn't be a problem as we will see normal rx + * interrupts for the frames in the receive ring. But + * there are some PCI chipsets (I can reproduce this + * on SP3G with Intel saturn chipset) which have + * sometimes problems and will fill up the receive + * ring with error descriptors. In this situation we + * don't get a rx interrupt, but a missed frame + * interrupt sooner or later. + */ + dev->stats.rx_errors++; /* Missed a Rx frame. */ + } + if (csr0 & 0x0800) { + netif_err(lp, drv, dev, "Bus master arbitration failure, status %4.4x\n", + csr0); + /* unlike for the lance, there is no restart needed */ + } + if (napi_schedule_prep(&lp->napi)) { + u16 val; + /* set interrupt masks */ + val = lp->a->read_csr(ioaddr, CSR3); + val |= 0x5f00; + lp->a->write_csr(ioaddr, CSR3, val); + + __napi_schedule(&lp->napi); + break; + } + csr0 = lp->a->read_csr(ioaddr, CSR0); + } + + netif_printk(lp, intr, KERN_DEBUG, dev, + "exiting interrupt, csr0=%#4.4x\n", + lp->a->read_csr(ioaddr, CSR0)); + + spin_unlock(&lp->lock); + + return IRQ_HANDLED; +} + +static int pcnet32_close(struct net_device *dev) +{ + unsigned long ioaddr = dev->base_addr; + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long flags; + + del_timer_sync(&lp->watchdog_timer); + + netif_stop_queue(dev); + napi_disable(&lp->napi); + + spin_lock_irqsave(&lp->lock, flags); + + dev->stats.rx_missed_errors = lp->a->read_csr(ioaddr, 112); + + netif_printk(lp, ifdown, KERN_DEBUG, dev, + "Shutting down ethercard, status was %2.2x\n", + lp->a->read_csr(ioaddr, CSR0)); + + /* We stop the PCNET32 here -- it occasionally polls memory if we don't. */ + lp->a->write_csr(ioaddr, CSR0, CSR0_STOP); + + /* + * Switch back to 16bit mode to avoid problems with dumb + * DOS packet driver after a warm reboot + */ + lp->a->write_bcr(ioaddr, 20, 4); + + spin_unlock_irqrestore(&lp->lock, flags); + + free_irq(dev->irq, dev); + + spin_lock_irqsave(&lp->lock, flags); + + pcnet32_purge_rx_ring(dev); + pcnet32_purge_tx_ring(dev); + + spin_unlock_irqrestore(&lp->lock, flags); + + return 0; +} + +static struct net_device_stats *pcnet32_get_stats(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + unsigned long flags; + + spin_lock_irqsave(&lp->lock, flags); + dev->stats.rx_missed_errors = lp->a->read_csr(ioaddr, 112); + spin_unlock_irqrestore(&lp->lock, flags); + + return &dev->stats; +} + +/* taken from the sunlance driver, which it took from the depca driver */ +static void pcnet32_load_multicast(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + volatile struct pcnet32_init_block *ib = lp->init_block; + volatile __le16 *mcast_table = (__le16 *)ib->filter; + struct netdev_hw_addr *ha; + unsigned long ioaddr = dev->base_addr; + int i; + u32 crc; + + /* set all multicast bits */ + if (dev->flags & IFF_ALLMULTI) { + ib->filter[0] = cpu_to_le32(~0U); + ib->filter[1] = cpu_to_le32(~0U); + lp->a->write_csr(ioaddr, PCNET32_MC_FILTER, 0xffff); + lp->a->write_csr(ioaddr, PCNET32_MC_FILTER+1, 0xffff); + lp->a->write_csr(ioaddr, PCNET32_MC_FILTER+2, 0xffff); + lp->a->write_csr(ioaddr, PCNET32_MC_FILTER+3, 0xffff); + return; + } + /* clear the multicast filter */ + ib->filter[0] = 0; + ib->filter[1] = 0; + + /* Add addresses */ + netdev_for_each_mc_addr(ha, dev) { + crc = ether_crc_le(6, ha->addr); + crc = crc >> 26; + mcast_table[crc >> 4] |= cpu_to_le16(1 << (crc & 0xf)); + } + for (i = 0; i < 4; i++) + lp->a->write_csr(ioaddr, PCNET32_MC_FILTER + i, + le16_to_cpu(mcast_table[i])); +} + +/* + * Set or clear the multicast filter for this adaptor. + */ +static void pcnet32_set_multicast_list(struct net_device *dev) +{ + unsigned long ioaddr = dev->base_addr, flags; + struct pcnet32_private *lp = netdev_priv(dev); + int csr15, suspended; + + spin_lock_irqsave(&lp->lock, flags); + suspended = pcnet32_suspend(dev, &flags, 0); + csr15 = lp->a->read_csr(ioaddr, CSR15); + if (dev->flags & IFF_PROMISC) { + /* Log any net taps. */ + netif_info(lp, hw, dev, "Promiscuous mode enabled\n"); + lp->init_block->mode = + cpu_to_le16(0x8000 | (lp->options & PCNET32_PORT_PORTSEL) << + 7); + lp->a->write_csr(ioaddr, CSR15, csr15 | 0x8000); + } else { + lp->init_block->mode = + cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7); + lp->a->write_csr(ioaddr, CSR15, csr15 & 0x7fff); + pcnet32_load_multicast(dev); + } + + if (suspended) { + int csr5; + /* clear SUSPEND (SPND) - CSR5 bit 0 */ + csr5 = lp->a->read_csr(ioaddr, CSR5); + lp->a->write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND)); + } else { + lp->a->write_csr(ioaddr, CSR0, CSR0_STOP); + pcnet32_restart(dev, CSR0_NORMAL); + netif_wake_queue(dev); + } + + spin_unlock_irqrestore(&lp->lock, flags); +} + +/* This routine assumes that the lp->lock is held */ +static int mdio_read(struct net_device *dev, int phy_id, int reg_num) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + u16 val_out; + + if (!lp->mii) + return 0; + + lp->a->write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f)); + val_out = lp->a->read_bcr(ioaddr, 34); + + return val_out; +} + +/* This routine assumes that the lp->lock is held */ +static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + + if (!lp->mii) + return; + + lp->a->write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f)); + lp->a->write_bcr(ioaddr, 34, val); +} + +static int pcnet32_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct pcnet32_private *lp = netdev_priv(dev); + int rc; + unsigned long flags; + + /* SIOC[GS]MIIxxx ioctls */ + if (lp->mii) { + spin_lock_irqsave(&lp->lock, flags); + rc = generic_mii_ioctl(&lp->mii_if, if_mii(rq), cmd, NULL); + spin_unlock_irqrestore(&lp->lock, flags); + } else { + rc = -EOPNOTSUPP; + } + + return rc; +} + +static int pcnet32_check_otherphy(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + struct mii_if_info mii = lp->mii_if; + u16 bmcr; + int i; + + for (i = 0; i < PCNET32_MAX_PHYS; i++) { + if (i == lp->mii_if.phy_id) + continue; /* skip active phy */ + if (lp->phymask & (1 << i)) { + mii.phy_id = i; + if (mii_link_ok(&mii)) { + /* found PHY with active link */ + netif_info(lp, link, dev, "Using PHY number %d\n", + i); + + /* isolate inactive phy */ + bmcr = + mdio_read(dev, lp->mii_if.phy_id, MII_BMCR); + mdio_write(dev, lp->mii_if.phy_id, MII_BMCR, + bmcr | BMCR_ISOLATE); + + /* de-isolate new phy */ + bmcr = mdio_read(dev, i, MII_BMCR); + mdio_write(dev, i, MII_BMCR, + bmcr & ~BMCR_ISOLATE); + + /* set new phy address */ + lp->mii_if.phy_id = i; + return 1; + } + } + } + return 0; +} + +/* + * Show the status of the media. Similar to mii_check_media however it + * correctly shows the link speed for all (tested) pcnet32 variants. + * Devices with no mii just report link state without speed. + * + * Caller is assumed to hold and release the lp->lock. + */ + +static void pcnet32_check_media(struct net_device *dev, int verbose) +{ + struct pcnet32_private *lp = netdev_priv(dev); + int curr_link; + int prev_link = netif_carrier_ok(dev) ? 1 : 0; + u32 bcr9; + + if (lp->mii) { + curr_link = mii_link_ok(&lp->mii_if); + } else { + ulong ioaddr = dev->base_addr; /* card base I/O address */ + curr_link = (lp->a->read_bcr(ioaddr, 4) != 0xc0); + } + if (!curr_link) { + if (prev_link || verbose) { + netif_carrier_off(dev); + netif_info(lp, link, dev, "link down\n"); + } + if (lp->phycount > 1) { + curr_link = pcnet32_check_otherphy(dev); + prev_link = 0; + } + } else if (verbose || !prev_link) { + netif_carrier_on(dev); + if (lp->mii) { + if (netif_msg_link(lp)) { + struct ethtool_cmd ecmd = { + .cmd = ETHTOOL_GSET }; + mii_ethtool_gset(&lp->mii_if, &ecmd); + netdev_info(dev, "link up, %uMbps, %s-duplex\n", + ethtool_cmd_speed(&ecmd), + (ecmd.duplex == DUPLEX_FULL) + ? "full" : "half"); + } + bcr9 = lp->a->read_bcr(dev->base_addr, 9); + if ((bcr9 & (1 << 0)) != lp->mii_if.full_duplex) { + if (lp->mii_if.full_duplex) + bcr9 |= (1 << 0); + else + bcr9 &= ~(1 << 0); + lp->a->write_bcr(dev->base_addr, 9, bcr9); + } + } else { + netif_info(lp, link, dev, "link up\n"); + } + } +} + +/* + * Check for loss of link and link establishment. + * Can not use mii_check_media because it does nothing if mode is forced. + */ + +static void pcnet32_watchdog(struct net_device *dev) +{ + struct pcnet32_private *lp = netdev_priv(dev); + unsigned long flags; + + /* Print the link status if it has changed */ + spin_lock_irqsave(&lp->lock, flags); + pcnet32_check_media(dev, 0); + spin_unlock_irqrestore(&lp->lock, flags); + + mod_timer(&lp->watchdog_timer, round_jiffies(PCNET32_WATCHDOG_TIMEOUT)); +} + +static int pcnet32_pm_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct net_device *dev = pci_get_drvdata(pdev); + + if (netif_running(dev)) { + netif_device_detach(dev); + pcnet32_close(dev); + } + pci_save_state(pdev); + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + return 0; +} + +static int pcnet32_pm_resume(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + + if (netif_running(dev)) { + pcnet32_open(dev); + netif_device_attach(dev); + } + return 0; +} + +static void __devexit pcnet32_remove_one(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + + if (dev) { + struct pcnet32_private *lp = netdev_priv(dev); + + unregister_netdev(dev); + pcnet32_free_ring(dev); + release_region(dev->base_addr, PCNET32_TOTAL_SIZE); + pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block), + lp->init_block, lp->init_dma_addr); + free_netdev(dev); + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); + } +} + +static struct pci_driver pcnet32_driver = { + .name = DRV_NAME, + .probe = pcnet32_probe_pci, + .remove = __devexit_p(pcnet32_remove_one), + .id_table = pcnet32_pci_tbl, + .suspend = pcnet32_pm_suspend, + .resume = pcnet32_pm_resume, +}; + +/* An additional parameter that may be passed in... */ +static int debug = -1; +static int tx_start_pt = -1; +static int pcnet32_have_pci; + +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, DRV_NAME " debug level"); +module_param(max_interrupt_work, int, 0); +MODULE_PARM_DESC(max_interrupt_work, + DRV_NAME " maximum events handled per interrupt"); +module_param(rx_copybreak, int, 0); +MODULE_PARM_DESC(rx_copybreak, + DRV_NAME " copy breakpoint for copy-only-tiny-frames"); +module_param(tx_start_pt, int, 0); +MODULE_PARM_DESC(tx_start_pt, DRV_NAME " transmit start point (0-3)"); +module_param(pcnet32vlb, int, 0); +MODULE_PARM_DESC(pcnet32vlb, DRV_NAME " Vesa local bus (VLB) support (0/1)"); +module_param_array(options, int, NULL, 0); +MODULE_PARM_DESC(options, DRV_NAME " initial option setting(s) (0-15)"); +module_param_array(full_duplex, int, NULL, 0); +MODULE_PARM_DESC(full_duplex, DRV_NAME " full duplex setting(s) (1)"); +/* Module Parameter for HomePNA cards added by Patrick Simmons, 2004 */ +module_param_array(homepna, int, NULL, 0); +MODULE_PARM_DESC(homepna, + DRV_NAME + " mode for 79C978 cards (1 for HomePNA, 0 for Ethernet, default Ethernet"); + +MODULE_AUTHOR("Thomas Bogendoerfer"); +MODULE_DESCRIPTION("Driver for PCnet32 and PCnetPCI based ethercards"); +MODULE_LICENSE("GPL"); + +#define PCNET32_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK) + +static int __init pcnet32_init_module(void) +{ + pr_info("%s", version); + + pcnet32_debug = netif_msg_init(debug, PCNET32_MSG_DEFAULT); + + if ((tx_start_pt >= 0) && (tx_start_pt <= 3)) + tx_start = tx_start_pt; + + /* find the PCI devices */ + if (!pci_register_driver(&pcnet32_driver)) + pcnet32_have_pci = 1; + + /* should we find any remaining VLbus devices ? */ + if (pcnet32vlb) + pcnet32_probe_vlbus(pcnet32_portlist); + + if (cards_found && (pcnet32_debug & NETIF_MSG_PROBE)) + pr_info("%d cards_found\n", cards_found); + + return (pcnet32_have_pci + cards_found) ? 0 : -ENODEV; +} + +static void __exit pcnet32_cleanup_module(void) +{ + struct net_device *next_dev; + + while (pcnet32_dev) { + struct pcnet32_private *lp = netdev_priv(pcnet32_dev); + next_dev = lp->next; + unregister_netdev(pcnet32_dev); + pcnet32_free_ring(pcnet32_dev); + release_region(pcnet32_dev->base_addr, PCNET32_TOTAL_SIZE); + pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block), + lp->init_block, lp->init_dma_addr); + free_netdev(pcnet32_dev); + pcnet32_dev = next_dev; + } + + if (pcnet32_have_pci) + pci_unregister_driver(&pcnet32_driver); +} + +module_init(pcnet32_init_module); +module_exit(pcnet32_cleanup_module); + +/* + * Local variables: + * c-indent-level: 4 + * tab-width: 8 + * End: + */ diff --git a/drivers/net/ethernet/amd/sun3lance.c b/drivers/net/ethernet/amd/sun3lance.c new file mode 100644 index 000000000000..080b71fcc683 --- /dev/null +++ b/drivers/net/ethernet/amd/sun3lance.c @@ -0,0 +1,961 @@ +/* sun3lance.c: Ethernet driver for SUN3 Lance chip */ +/* + + Sun3 Lance ethernet driver, by Sam Creasey (sammy@users.qual.net). + This driver is a part of the linux kernel, and is thus distributed + under the GNU General Public License. + + The values used in LANCE_OBIO and LANCE_IRQ seem to be empirically + true for the correct IRQ and address of the lance registers. They + have not been widely tested, however. What we probably need is a + "proper" way to search for a device in the sun3's prom, but, alas, + linux has no such thing. + + This driver is largely based on atarilance.c, by Roman Hodek. Other + sources of inspiration were the NetBSD sun3 am7990 driver, and the + linux sparc lance driver (sunlance.c). + + There are more assumptions made throughout this driver, it almost + certainly still needs work, but it does work at least for RARP/BOOTP and + mounting the root NFS filesystem. + +*/ + +static char *version = "sun3lance.c: v1.2 1/12/2001 Sam Creasey (sammy@sammy.net)\n"; + +#include <linux/module.h> +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/bitops.h> + +#include <asm/cacheflush.h> +#include <asm/setup.h> +#include <asm/irq.h> +#include <asm/io.h> +#include <asm/pgtable.h> +#include <asm/dvma.h> +#include <asm/idprom.h> +#include <asm/machines.h> + +#ifdef CONFIG_SUN3 +#include <asm/sun3mmu.h> +#else +#include <asm/sun3xprom.h> +#endif + +/* sun3/60 addr/irq for the lance chip. If your sun is different, + change this. */ +#define LANCE_OBIO 0x120000 +#define LANCE_IRQ IRQ_AUTO_3 + +/* Debug level: + * 0 = silent, print only serious errors + * 1 = normal, print error messages + * 2 = debug, print debug infos + * 3 = debug, print even more debug infos (packet data) + */ + +#define LANCE_DEBUG 0 + +#ifdef LANCE_DEBUG +static int lance_debug = LANCE_DEBUG; +#else +static int lance_debug = 1; +#endif +module_param(lance_debug, int, 0); +MODULE_PARM_DESC(lance_debug, "SUN3 Lance debug level (0-3)"); +MODULE_LICENSE("GPL"); + +#define DPRINTK(n,a) \ + do { \ + if (lance_debug >= n) \ + printk a; \ + } while( 0 ) + + +/* we're only using 32k of memory, so we use 4 TX + buffers and 16 RX buffers. These values are expressed as log2. */ + +#define TX_LOG_RING_SIZE 3 +#define RX_LOG_RING_SIZE 5 + +/* These are the derived values */ + +#define TX_RING_SIZE (1 << TX_LOG_RING_SIZE) +#define TX_RING_LEN_BITS (TX_LOG_RING_SIZE << 5) +#define TX_RING_MOD_MASK (TX_RING_SIZE - 1) + +#define RX_RING_SIZE (1 << RX_LOG_RING_SIZE) +#define RX_RING_LEN_BITS (RX_LOG_RING_SIZE << 5) +#define RX_RING_MOD_MASK (RX_RING_SIZE - 1) + +/* Definitions for packet buffer access: */ +#define PKT_BUF_SZ 1544 + +/* Get the address of a packet buffer corresponding to a given buffer head */ +#define PKTBUF_ADDR(head) (void *)((unsigned long)(MEM) | (head)->base) + + +/* The LANCE Rx and Tx ring descriptors. */ +struct lance_rx_head { + unsigned short base; /* Low word of base addr */ + volatile unsigned char flag; + unsigned char base_hi; /* High word of base addr (unused) */ + short buf_length; /* This length is 2s complement! */ + volatile short msg_length; /* This length is "normal". */ +}; + +struct lance_tx_head { + unsigned short base; /* Low word of base addr */ + volatile unsigned char flag; + unsigned char base_hi; /* High word of base addr (unused) */ + short length; /* Length is 2s complement! */ + volatile short misc; +}; + +/* The LANCE initialization block, described in databook. */ +struct lance_init_block { + unsigned short mode; /* Pre-set mode */ + unsigned char hwaddr[6]; /* Physical ethernet address */ + unsigned int filter[2]; /* Multicast filter (unused). */ + /* Receive and transmit ring base, along with length bits. */ + unsigned short rdra; + unsigned short rlen; + unsigned short tdra; + unsigned short tlen; + unsigned short pad[4]; /* is thie needed? */ +}; + +/* The whole layout of the Lance shared memory */ +struct lance_memory { + struct lance_init_block init; + struct lance_tx_head tx_head[TX_RING_SIZE]; + struct lance_rx_head rx_head[RX_RING_SIZE]; + char rx_data[RX_RING_SIZE][PKT_BUF_SZ]; + char tx_data[TX_RING_SIZE][PKT_BUF_SZ]; +}; + +/* The driver's private device structure */ + +struct lance_private { + volatile unsigned short *iobase; + struct lance_memory *mem; + int new_rx, new_tx; /* The next free ring entry */ + int old_tx, old_rx; /* ring entry to be processed */ +/* These two must be longs for set_bit() */ + long tx_full; + long lock; +}; + +/* I/O register access macros */ + +#define MEM lp->mem +#define DREG lp->iobase[0] +#define AREG lp->iobase[1] +#define REGA(a) (*( AREG = (a), &DREG )) + +/* Definitions for the Lance */ + +/* tx_head flags */ +#define TMD1_ENP 0x01 /* end of packet */ +#define TMD1_STP 0x02 /* start of packet */ +#define TMD1_DEF 0x04 /* deferred */ +#define TMD1_ONE 0x08 /* one retry needed */ +#define TMD1_MORE 0x10 /* more than one retry needed */ +#define TMD1_ERR 0x40 /* error summary */ +#define TMD1_OWN 0x80 /* ownership (set: chip owns) */ + +#define TMD1_OWN_CHIP TMD1_OWN +#define TMD1_OWN_HOST 0 + +/* tx_head misc field */ +#define TMD3_TDR 0x03FF /* Time Domain Reflectometry counter */ +#define TMD3_RTRY 0x0400 /* failed after 16 retries */ +#define TMD3_LCAR 0x0800 /* carrier lost */ +#define TMD3_LCOL 0x1000 /* late collision */ +#define TMD3_UFLO 0x4000 /* underflow (late memory) */ +#define TMD3_BUFF 0x8000 /* buffering error (no ENP) */ + +/* rx_head flags */ +#define RMD1_ENP 0x01 /* end of packet */ +#define RMD1_STP 0x02 /* start of packet */ +#define RMD1_BUFF 0x04 /* buffer error */ +#define RMD1_CRC 0x08 /* CRC error */ +#define RMD1_OFLO 0x10 /* overflow */ +#define RMD1_FRAM 0x20 /* framing error */ +#define RMD1_ERR 0x40 /* error summary */ +#define RMD1_OWN 0x80 /* ownership (set: ship owns) */ + +#define RMD1_OWN_CHIP RMD1_OWN +#define RMD1_OWN_HOST 0 + +/* register names */ +#define CSR0 0 /* mode/status */ +#define CSR1 1 /* init block addr (low) */ +#define CSR2 2 /* init block addr (high) */ +#define CSR3 3 /* misc */ +#define CSR8 8 /* address filter */ +#define CSR15 15 /* promiscuous mode */ + +/* CSR0 */ +/* (R=readable, W=writeable, S=set on write, C=clear on write) */ +#define CSR0_INIT 0x0001 /* initialize (RS) */ +#define CSR0_STRT 0x0002 /* start (RS) */ +#define CSR0_STOP 0x0004 /* stop (RS) */ +#define CSR0_TDMD 0x0008 /* transmit demand (RS) */ +#define CSR0_TXON 0x0010 /* transmitter on (R) */ +#define CSR0_RXON 0x0020 /* receiver on (R) */ +#define CSR0_INEA 0x0040 /* interrupt enable (RW) */ +#define CSR0_INTR 0x0080 /* interrupt active (R) */ +#define CSR0_IDON 0x0100 /* initialization done (RC) */ +#define CSR0_TINT 0x0200 /* transmitter interrupt (RC) */ +#define CSR0_RINT 0x0400 /* receiver interrupt (RC) */ +#define CSR0_MERR 0x0800 /* memory error (RC) */ +#define CSR0_MISS 0x1000 /* missed frame (RC) */ +#define CSR0_CERR 0x2000 /* carrier error (no heartbeat :-) (RC) */ +#define CSR0_BABL 0x4000 /* babble: tx-ed too many bits (RC) */ +#define CSR0_ERR 0x8000 /* error (RC) */ + +/* CSR3 */ +#define CSR3_BCON 0x0001 /* byte control */ +#define CSR3_ACON 0x0002 /* ALE control */ +#define CSR3_BSWP 0x0004 /* byte swap (1=big endian) */ + +/***************************** Prototypes *****************************/ + +static int lance_probe( struct net_device *dev); +static int lance_open( struct net_device *dev ); +static void lance_init_ring( struct net_device *dev ); +static int lance_start_xmit( struct sk_buff *skb, struct net_device *dev ); +static irqreturn_t lance_interrupt( int irq, void *dev_id); +static int lance_rx( struct net_device *dev ); +static int lance_close( struct net_device *dev ); +static void set_multicast_list( struct net_device *dev ); + +/************************* End of Prototypes **************************/ + +struct net_device * __init sun3lance_probe(int unit) +{ + struct net_device *dev; + static int found; + int err = -ENODEV; + + if (!MACH_IS_SUN3 && !MACH_IS_SUN3X) + return ERR_PTR(-ENODEV); + + /* check that this machine has an onboard lance */ + switch(idprom->id_machtype) { + case SM_SUN3|SM_3_50: + case SM_SUN3|SM_3_60: + case SM_SUN3X|SM_3_80: + /* these machines have lance */ + break; + + default: + return ERR_PTR(-ENODEV); + } + + if (found) + return ERR_PTR(-ENODEV); + + dev = alloc_etherdev(sizeof(struct lance_private)); + if (!dev) + return ERR_PTR(-ENOMEM); + if (unit >= 0) { + sprintf(dev->name, "eth%d", unit); + netdev_boot_setup_check(dev); + } + + if (!lance_probe(dev)) + goto out; + + err = register_netdev(dev); + if (err) + goto out1; + found = 1; + return dev; + +out1: +#ifdef CONFIG_SUN3 + iounmap((void __iomem *)dev->base_addr); +#endif +out: + free_netdev(dev); + return ERR_PTR(err); +} + +static const struct net_device_ops lance_netdev_ops = { + .ndo_open = lance_open, + .ndo_stop = lance_close, + .ndo_start_xmit = lance_start_xmit, + .ndo_set_rx_mode = set_multicast_list, + .ndo_set_mac_address = NULL, + .ndo_change_mtu = eth_change_mtu, + .ndo_validate_addr = eth_validate_addr, +}; + +static int __init lance_probe( struct net_device *dev) +{ + unsigned long ioaddr; + + struct lance_private *lp; + int i; + static int did_version; + volatile unsigned short *ioaddr_probe; + unsigned short tmp1, tmp2; + +#ifdef CONFIG_SUN3 + ioaddr = (unsigned long)ioremap(LANCE_OBIO, PAGE_SIZE); + if (!ioaddr) + return 0; +#else + ioaddr = SUN3X_LANCE; +#endif + + /* test to see if there's really a lance here */ + /* (CSRO_INIT shouldn't be readable) */ + + ioaddr_probe = (volatile unsigned short *)ioaddr; + tmp1 = ioaddr_probe[0]; + tmp2 = ioaddr_probe[1]; + + ioaddr_probe[1] = CSR0; + ioaddr_probe[0] = CSR0_INIT | CSR0_STOP; + + if(ioaddr_probe[0] != CSR0_STOP) { + ioaddr_probe[0] = tmp1; + ioaddr_probe[1] = tmp2; + +#ifdef CONFIG_SUN3 + iounmap((void __iomem *)ioaddr); +#endif + return 0; + } + + lp = netdev_priv(dev); + + /* XXX - leak? */ + MEM = dvma_malloc_align(sizeof(struct lance_memory), 0x10000); + if (MEM == NULL) { +#ifdef CONFIG_SUN3 + iounmap((void __iomem *)ioaddr); +#endif + printk(KERN_WARNING "SUN3 Lance couldn't allocate DVMA memory\n"); + return 0; + } + + lp->iobase = (volatile unsigned short *)ioaddr; + dev->base_addr = (unsigned long)ioaddr; /* informational only */ + + REGA(CSR0) = CSR0_STOP; + + if (request_irq(LANCE_IRQ, lance_interrupt, IRQF_DISABLED, "SUN3 Lance", dev) < 0) { +#ifdef CONFIG_SUN3 + iounmap((void __iomem *)ioaddr); +#endif + dvma_free((void *)MEM); + printk(KERN_WARNING "SUN3 Lance unable to allocate IRQ\n"); + return 0; + } + dev->irq = (unsigned short)LANCE_IRQ; + + + printk("%s: SUN3 Lance at io %#lx, mem %#lx, irq %d, hwaddr ", + dev->name, + (unsigned long)ioaddr, + (unsigned long)MEM, + dev->irq); + + /* copy in the ethernet address from the prom */ + for(i = 0; i < 6 ; i++) + dev->dev_addr[i] = idprom->id_ethaddr[i]; + + /* tell the card it's ether address, bytes swapped */ + MEM->init.hwaddr[0] = dev->dev_addr[1]; + MEM->init.hwaddr[1] = dev->dev_addr[0]; + MEM->init.hwaddr[2] = dev->dev_addr[3]; + MEM->init.hwaddr[3] = dev->dev_addr[2]; + MEM->init.hwaddr[4] = dev->dev_addr[5]; + MEM->init.hwaddr[5] = dev->dev_addr[4]; + + printk("%pM\n", dev->dev_addr); + + MEM->init.mode = 0x0000; + MEM->init.filter[0] = 0x00000000; + MEM->init.filter[1] = 0x00000000; + MEM->init.rdra = dvma_vtob(MEM->rx_head); + MEM->init.rlen = (RX_LOG_RING_SIZE << 13) | + (dvma_vtob(MEM->rx_head) >> 16); + MEM->init.tdra = dvma_vtob(MEM->tx_head); + MEM->init.tlen = (TX_LOG_RING_SIZE << 13) | + (dvma_vtob(MEM->tx_head) >> 16); + + DPRINTK(2, ("initaddr: %08lx rx_ring: %08lx tx_ring: %08lx\n", + dvma_vtob(&(MEM->init)), dvma_vtob(MEM->rx_head), + (dvma_vtob(MEM->tx_head)))); + + if (did_version++ == 0) + printk( version ); + + dev->netdev_ops = &lance_netdev_ops; +// KLUDGE -- REMOVE ME + set_bit(__LINK_STATE_PRESENT, &dev->state); + + + return 1; +} + +static int lance_open( struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + int i; + + DPRINTK( 2, ( "%s: lance_open()\n", dev->name )); + + REGA(CSR0) = CSR0_STOP; + + lance_init_ring(dev); + + /* From now on, AREG is kept to point to CSR0 */ + REGA(CSR0) = CSR0_INIT; + + i = 1000000; + while (--i > 0) + if (DREG & CSR0_IDON) + break; + if (i <= 0 || (DREG & CSR0_ERR)) { + DPRINTK( 2, ( "lance_open(): opening %s failed, i=%d, csr0=%04x\n", + dev->name, i, DREG )); + DREG = CSR0_STOP; + return -EIO; + } + + DREG = CSR0_IDON | CSR0_STRT | CSR0_INEA; + + netif_start_queue(dev); + + DPRINTK( 2, ( "%s: LANCE is open, csr0 %04x\n", dev->name, DREG )); + + return 0; +} + + +/* Initialize the LANCE Rx and Tx rings. */ + +static void lance_init_ring( struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + int i; + + lp->lock = 0; + lp->tx_full = 0; + lp->new_rx = lp->new_tx = 0; + lp->old_rx = lp->old_tx = 0; + + for( i = 0; i < TX_RING_SIZE; i++ ) { + MEM->tx_head[i].base = dvma_vtob(MEM->tx_data[i]); + MEM->tx_head[i].flag = 0; + MEM->tx_head[i].base_hi = + (dvma_vtob(MEM->tx_data[i])) >>16; + MEM->tx_head[i].length = 0; + MEM->tx_head[i].misc = 0; + } + + for( i = 0; i < RX_RING_SIZE; i++ ) { + MEM->rx_head[i].base = dvma_vtob(MEM->rx_data[i]); + MEM->rx_head[i].flag = RMD1_OWN_CHIP; + MEM->rx_head[i].base_hi = + (dvma_vtob(MEM->rx_data[i])) >> 16; + MEM->rx_head[i].buf_length = -PKT_BUF_SZ | 0xf000; + MEM->rx_head[i].msg_length = 0; + } + + /* tell the card it's ether address, bytes swapped */ + MEM->init.hwaddr[0] = dev->dev_addr[1]; + MEM->init.hwaddr[1] = dev->dev_addr[0]; + MEM->init.hwaddr[2] = dev->dev_addr[3]; + MEM->init.hwaddr[3] = dev->dev_addr[2]; + MEM->init.hwaddr[4] = dev->dev_addr[5]; + MEM->init.hwaddr[5] = dev->dev_addr[4]; + + MEM->init.mode = 0x0000; + MEM->init.filter[0] = 0x00000000; + MEM->init.filter[1] = 0x00000000; + MEM->init.rdra = dvma_vtob(MEM->rx_head); + MEM->init.rlen = (RX_LOG_RING_SIZE << 13) | + (dvma_vtob(MEM->rx_head) >> 16); + MEM->init.tdra = dvma_vtob(MEM->tx_head); + MEM->init.tlen = (TX_LOG_RING_SIZE << 13) | + (dvma_vtob(MEM->tx_head) >> 16); + + + /* tell the lance the address of its init block */ + REGA(CSR1) = dvma_vtob(&(MEM->init)); + REGA(CSR2) = dvma_vtob(&(MEM->init)) >> 16; + +#ifdef CONFIG_SUN3X + REGA(CSR3) = CSR3_BSWP | CSR3_ACON | CSR3_BCON; +#else + REGA(CSR3) = CSR3_BSWP; +#endif + +} + + +static int lance_start_xmit( struct sk_buff *skb, struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + int entry, len; + struct lance_tx_head *head; + unsigned long flags; + + DPRINTK( 1, ( "%s: transmit start.\n", + dev->name)); + + /* Transmitter timeout, serious problems. */ + if (netif_queue_stopped(dev)) { + int tickssofar = jiffies - dev_trans_start(dev); + if (tickssofar < HZ/5) + return NETDEV_TX_BUSY; + + DPRINTK( 1, ( "%s: transmit timed out, status %04x, resetting.\n", + dev->name, DREG )); + DREG = CSR0_STOP; + /* + * Always set BSWP after a STOP as STOP puts it back into + * little endian mode. + */ + REGA(CSR3) = CSR3_BSWP; + dev->stats.tx_errors++; + + if(lance_debug >= 2) { + int i; + printk("Ring data: old_tx %d new_tx %d%s new_rx %d\n", + lp->old_tx, lp->new_tx, + lp->tx_full ? " (full)" : "", + lp->new_rx ); + for( i = 0 ; i < RX_RING_SIZE; i++ ) + printk( "rx #%d: base=%04x blen=%04x mlen=%04x\n", + i, MEM->rx_head[i].base, + -MEM->rx_head[i].buf_length, + MEM->rx_head[i].msg_length); + for( i = 0 ; i < TX_RING_SIZE; i++ ) + printk("tx #%d: base=%04x len=%04x misc=%04x\n", + i, MEM->tx_head[i].base, + -MEM->tx_head[i].length, + MEM->tx_head[i].misc ); + } + + lance_init_ring(dev); + REGA( CSR0 ) = CSR0_INEA | CSR0_INIT | CSR0_STRT; + + netif_start_queue(dev); + + return NETDEV_TX_OK; + } + + + /* Block a timer-based transmit from overlapping. This could better be + done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */ + + /* Block a timer-based transmit from overlapping with us by + stopping the queue for a bit... */ + + netif_stop_queue(dev); + + if (test_and_set_bit( 0, (void*)&lp->lock ) != 0) { + printk( "%s: tx queue lock!.\n", dev->name); + /* don't clear dev->tbusy flag. */ + return NETDEV_TX_BUSY; + } + + AREG = CSR0; + DPRINTK( 2, ( "%s: lance_start_xmit() called, csr0 %4.4x.\n", + dev->name, DREG )); + +#ifdef CONFIG_SUN3X + /* this weirdness doesn't appear on sun3... */ + if(!(DREG & CSR0_INIT)) { + DPRINTK( 1, ("INIT not set, reinitializing...\n")); + REGA( CSR0 ) = CSR0_STOP; + lance_init_ring(dev); + REGA( CSR0 ) = CSR0_INIT | CSR0_STRT; + } +#endif + + /* Fill in a Tx ring entry */ +#if 0 + if (lance_debug >= 2) { + printk( "%s: TX pkt %d type 0x%04x" + " from %s to %s" + " data at 0x%08x len %d\n", + dev->name, lp->new_tx, ((u_short *)skb->data)[6], + DEV_ADDR(&skb->data[6]), DEV_ADDR(skb->data), + (int)skb->data, (int)skb->len ); + } +#endif + /* We're not prepared for the int until the last flags are set/reset. + * And the int may happen already after setting the OWN_CHIP... */ + local_irq_save(flags); + + /* Mask to ring buffer boundary. */ + entry = lp->new_tx; + head = &(MEM->tx_head[entry]); + + /* Caution: the write order is important here, set the "ownership" bits + * last. + */ + + /* the sun3's lance needs it's buffer padded to the minimum + size */ + len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN; + +// head->length = -len; + head->length = (-len) | 0xf000; + head->misc = 0; + + skb_copy_from_linear_data(skb, PKTBUF_ADDR(head), skb->len); + if (len != skb->len) + memset(PKTBUF_ADDR(head) + skb->len, 0, len-skb->len); + + head->flag = TMD1_OWN_CHIP | TMD1_ENP | TMD1_STP; + lp->new_tx = (lp->new_tx + 1) & TX_RING_MOD_MASK; + dev->stats.tx_bytes += skb->len; + + /* Trigger an immediate send poll. */ + REGA(CSR0) = CSR0_INEA | CSR0_TDMD | CSR0_STRT; + AREG = CSR0; + DPRINTK( 2, ( "%s: lance_start_xmit() exiting, csr0 %4.4x.\n", + dev->name, DREG )); + dev_kfree_skb(skb); + + lp->lock = 0; + if ((MEM->tx_head[(entry+1) & TX_RING_MOD_MASK].flag & TMD1_OWN) == + TMD1_OWN_HOST) + netif_start_queue(dev); + + local_irq_restore(flags); + + return NETDEV_TX_OK; +} + +/* The LANCE interrupt handler. */ + +static irqreturn_t lance_interrupt( int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct lance_private *lp = netdev_priv(dev); + int csr0; + static int in_interrupt; + + if (dev == NULL) { + DPRINTK( 1, ( "lance_interrupt(): invalid dev_id\n" )); + return IRQ_NONE; + } + + if (in_interrupt) + DPRINTK( 2, ( "%s: Re-entering the interrupt handler.\n", dev->name )); + in_interrupt = 1; + + still_more: + flush_cache_all(); + + AREG = CSR0; + csr0 = DREG; + + /* ack interrupts */ + DREG = csr0 & (CSR0_TINT | CSR0_RINT | CSR0_IDON); + + /* clear errors */ + if(csr0 & CSR0_ERR) + DREG = CSR0_BABL | CSR0_MERR | CSR0_CERR | CSR0_MISS; + + + DPRINTK( 2, ( "%s: interrupt csr0=%04x new csr=%04x.\n", + dev->name, csr0, DREG )); + + if (csr0 & CSR0_TINT) { /* Tx-done interrupt */ + int old_tx = lp->old_tx; + +// if(lance_debug >= 3) { +// int i; +// +// printk("%s: tx int\n", dev->name); +// +// for(i = 0; i < TX_RING_SIZE; i++) +// printk("ring %d flag=%04x\n", i, +// MEM->tx_head[i].flag); +// } + + while( old_tx != lp->new_tx) { + struct lance_tx_head *head = &(MEM->tx_head[old_tx]); + + DPRINTK(3, ("on tx_ring %d\n", old_tx)); + + if (head->flag & TMD1_OWN_CHIP) + break; /* It still hasn't been Txed */ + + if (head->flag & TMD1_ERR) { + int status = head->misc; + dev->stats.tx_errors++; + if (status & TMD3_RTRY) dev->stats.tx_aborted_errors++; + if (status & TMD3_LCAR) dev->stats.tx_carrier_errors++; + if (status & TMD3_LCOL) dev->stats.tx_window_errors++; + if (status & (TMD3_UFLO | TMD3_BUFF)) { + dev->stats.tx_fifo_errors++; + printk("%s: Tx FIFO error\n", + dev->name); + REGA(CSR0) = CSR0_STOP; + REGA(CSR3) = CSR3_BSWP; + lance_init_ring(dev); + REGA(CSR0) = CSR0_STRT | CSR0_INEA; + return IRQ_HANDLED; + } + } else if(head->flag & (TMD1_ENP | TMD1_STP)) { + + head->flag &= ~(TMD1_ENP | TMD1_STP); + if(head->flag & (TMD1_ONE | TMD1_MORE)) + dev->stats.collisions++; + + dev->stats.tx_packets++; + DPRINTK(3, ("cleared tx ring %d\n", old_tx)); + } + old_tx = (old_tx +1) & TX_RING_MOD_MASK; + } + + lp->old_tx = old_tx; + } + + + if (netif_queue_stopped(dev)) { + /* The ring is no longer full, clear tbusy. */ + netif_start_queue(dev); + netif_wake_queue(dev); + } + + if (csr0 & CSR0_RINT) /* Rx interrupt */ + lance_rx( dev ); + + /* Log misc errors. */ + if (csr0 & CSR0_BABL) dev->stats.tx_errors++; /* Tx babble. */ + if (csr0 & CSR0_MISS) dev->stats.rx_errors++; /* Missed a Rx frame. */ + if (csr0 & CSR0_MERR) { + DPRINTK( 1, ( "%s: Bus master arbitration failure (?!?), " + "status %04x.\n", dev->name, csr0 )); + /* Restart the chip. */ + REGA(CSR0) = CSR0_STOP; + REGA(CSR3) = CSR3_BSWP; + lance_init_ring(dev); + REGA(CSR0) = CSR0_STRT | CSR0_INEA; + } + + + /* Clear any other interrupt, and set interrupt enable. */ +// DREG = CSR0_BABL | CSR0_CERR | CSR0_MISS | CSR0_MERR | +// CSR0_IDON | CSR0_INEA; + + REGA(CSR0) = CSR0_INEA; + + if(DREG & (CSR0_RINT | CSR0_TINT)) { + DPRINTK(2, ("restarting interrupt, csr0=%#04x\n", DREG)); + goto still_more; + } + + DPRINTK( 2, ( "%s: exiting interrupt, csr0=%#04x.\n", + dev->name, DREG )); + in_interrupt = 0; + return IRQ_HANDLED; +} + +/* get packet, toss into skbuff */ +static int lance_rx( struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + int entry = lp->new_rx; + + /* If we own the next entry, it's a new packet. Send it up. */ + while( (MEM->rx_head[entry].flag & RMD1_OWN) == RMD1_OWN_HOST ) { + struct lance_rx_head *head = &(MEM->rx_head[entry]); + int status = head->flag; + + if (status != (RMD1_ENP|RMD1_STP)) { /* There was an error. */ + /* There is a tricky error noted by John Murphy, + <murf@perftech.com> to Russ Nelson: Even with + full-sized buffers it's possible for a jabber packet to use two + buffers, with only the last correctly noting the error. */ + if (status & RMD1_ENP) /* Only count a general error at the */ + dev->stats.rx_errors++; /* end of a packet.*/ + if (status & RMD1_FRAM) dev->stats.rx_frame_errors++; + if (status & RMD1_OFLO) dev->stats.rx_over_errors++; + if (status & RMD1_CRC) dev->stats.rx_crc_errors++; + if (status & RMD1_BUFF) dev->stats.rx_fifo_errors++; + head->flag &= (RMD1_ENP|RMD1_STP); + } else { + /* Malloc up new buffer, compatible with net-3. */ +// short pkt_len = head->msg_length;// & 0xfff; + short pkt_len = (head->msg_length & 0xfff) - 4; + struct sk_buff *skb; + + if (pkt_len < 60) { + printk( "%s: Runt packet!\n", dev->name ); + dev->stats.rx_errors++; + } + else { + skb = dev_alloc_skb( pkt_len+2 ); + if (skb == NULL) { + DPRINTK( 1, ( "%s: Memory squeeze, deferring packet.\n", + dev->name )); + + dev->stats.rx_dropped++; + head->msg_length = 0; + head->flag |= RMD1_OWN_CHIP; + lp->new_rx = (lp->new_rx+1) & + RX_RING_MOD_MASK; + } + +#if 0 + if (lance_debug >= 3) { + u_char *data = PKTBUF_ADDR(head); + printk("%s: RX pkt %d type 0x%04x" + " from %pM to %pM", + dev->name, lp->new_tx, ((u_short *)data)[6], + &data[6], data); + + printk(" data %02x %02x %02x %02x %02x %02x %02x %02x " + "len %d at %08x\n", + data[15], data[16], data[17], data[18], + data[19], data[20], data[21], data[22], + pkt_len, data); + } +#endif + if (lance_debug >= 3) { + u_char *data = PKTBUF_ADDR(head); + printk( "%s: RX pkt %d type 0x%04x len %d\n ", dev->name, entry, ((u_short *)data)[6], pkt_len); + } + + + skb_reserve( skb, 2 ); /* 16 byte align */ + skb_put( skb, pkt_len ); /* Make room */ + skb_copy_to_linear_data(skb, + PKTBUF_ADDR(head), + pkt_len); + + skb->protocol = eth_type_trans( skb, dev ); + netif_rx( skb ); + dev->stats.rx_packets++; + dev->stats.rx_bytes += pkt_len; + } + } + +// head->buf_length = -PKT_BUF_SZ | 0xf000; + head->msg_length = 0; + head->flag = RMD1_OWN_CHIP; + + entry = lp->new_rx = (lp->new_rx +1) & RX_RING_MOD_MASK; + } + + /* From lance.c (Donald Becker): */ + /* We should check that at least two ring entries are free. + If not, we should free one and mark stats->rx_dropped++. */ + + return 0; +} + + +static int lance_close( struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + + netif_stop_queue(dev); + + AREG = CSR0; + + DPRINTK( 2, ( "%s: Shutting down ethercard, status was %2.2x.\n", + dev->name, DREG )); + + /* We stop the LANCE here -- it occasionally polls + memory if we don't. */ + DREG = CSR0_STOP; + return 0; +} + + +/* Set or clear the multicast filter for this adaptor. + num_addrs == -1 Promiscuous mode, receive all packets + num_addrs == 0 Normal mode, clear multicast list + num_addrs > 0 Multicast mode, receive normal and MC packets, and do + best-effort filtering. + */ + +/* completely untested on a sun3 */ +static void set_multicast_list( struct net_device *dev ) +{ + struct lance_private *lp = netdev_priv(dev); + + if(netif_queue_stopped(dev)) + /* Only possible if board is already started */ + return; + + /* We take the simple way out and always enable promiscuous mode. */ + DREG = CSR0_STOP; /* Temporarily stop the lance. */ + + if (dev->flags & IFF_PROMISC) { + /* Log any net taps. */ + DPRINTK( 3, ( "%s: Promiscuous mode enabled.\n", dev->name )); + REGA( CSR15 ) = 0x8000; /* Set promiscuous mode */ + } else { + short multicast_table[4]; + int num_addrs = netdev_mc_count(dev); + int i; + /* We don't use the multicast table, but rely on upper-layer + * filtering. */ + memset( multicast_table, (num_addrs == 0) ? 0 : -1, + sizeof(multicast_table) ); + for( i = 0; i < 4; i++ ) + REGA( CSR8+i ) = multicast_table[i]; + REGA( CSR15 ) = 0; /* Unset promiscuous mode */ + } + + /* + * Always set BSWP after a STOP as STOP puts it back into + * little endian mode. + */ + REGA( CSR3 ) = CSR3_BSWP; + + /* Resume normal operation and reset AREG to CSR0 */ + REGA( CSR0 ) = CSR0_IDON | CSR0_INEA | CSR0_STRT; +} + + +#ifdef MODULE + +static struct net_device *sun3lance_dev; + +int __init init_module(void) +{ + sun3lance_dev = sun3lance_probe(-1); + if (IS_ERR(sun3lance_dev)) + return PTR_ERR(sun3lance_dev); + return 0; +} + +void __exit cleanup_module(void) +{ + unregister_netdev(sun3lance_dev); +#ifdef CONFIG_SUN3 + iounmap((void __iomem *)sun3lance_dev->base_addr); +#endif + free_netdev(sun3lance_dev); +} + +#endif /* MODULE */ + diff --git a/drivers/net/ethernet/amd/sunlance.c b/drivers/net/ethernet/amd/sunlance.c new file mode 100644 index 000000000000..8fda457f94cf --- /dev/null +++ b/drivers/net/ethernet/amd/sunlance.c @@ -0,0 +1,1556 @@ +/* $Id: sunlance.c,v 1.112 2002/01/15 06:48:55 davem Exp $ + * lance.c: Linux/Sparc/Lance driver + * + * Written 1995, 1996 by Miguel de Icaza + * Sources: + * The Linux depca driver + * The Linux lance driver. + * The Linux skeleton driver. + * The NetBSD Sparc/Lance driver. + * Theo de Raadt (deraadt@openbsd.org) + * NCR92C990 Lan Controller manual + * + * 1.4: + * Added support to run with a ledma on the Sun4m + * + * 1.5: + * Added multiple card detection. + * + * 4/17/96: Burst sizes and tpe selection on sun4m by Eddie C. Dost + * (ecd@skynet.be) + * + * 5/15/96: auto carrier detection on sun4m by Eddie C. Dost + * (ecd@skynet.be) + * + * 5/17/96: lebuffer on scsi/ether cards now work David S. Miller + * (davem@caip.rutgers.edu) + * + * 5/29/96: override option 'tpe-link-test?', if it is 'false', as + * this disables auto carrier detection on sun4m. Eddie C. Dost + * (ecd@skynet.be) + * + * 1.7: + * 6/26/96: Bug fix for multiple ledmas, miguel. + * + * 1.8: + * Stole multicast code from depca.c, fixed lance_tx. + * + * 1.9: + * 8/21/96: Fixed the multicast code (Pedro Roque) + * + * 8/28/96: Send fake packet in lance_open() if auto_select is true, + * so we can detect the carrier loss condition in time. + * Eddie C. Dost (ecd@skynet.be) + * + * 9/15/96: Align rx_buf so that eth_copy_and_sum() won't cause an + * MNA trap during chksum_partial_copy(). (ecd@skynet.be) + * + * 11/17/96: Handle LE_C0_MERR in lance_interrupt(). (ecd@skynet.be) + * + * 12/22/96: Don't loop forever in lance_rx() on incomplete packets. + * This was the sun4c killer. Shit, stupid bug. + * (ecd@skynet.be) + * + * 1.10: + * 1/26/97: Modularize driver. (ecd@skynet.be) + * + * 1.11: + * 12/27/97: Added sun4d support. (jj@sunsite.mff.cuni.cz) + * + * 1.12: + * 11/3/99: Fixed SMP race in lance_start_xmit found by davem. + * Anton Blanchard (anton@progsoc.uts.edu.au) + * 2.00: 11/9/99: Massive overhaul and port to new SBUS driver interfaces. + * David S. Miller (davem@redhat.com) + * 2.01: + * 11/08/01: Use library crc32 functions (Matt_Domsch@dell.com) + * + */ + +#undef DEBUG_DRIVER + +static char lancestr[] = "LANCE"; + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/string.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/crc32.h> +#include <linux/errno.h> +#include <linux/socket.h> /* Used for the temporal inet entries and routing */ +#include <linux/route.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/ethtool.h> +#include <linux/bitops.h> +#include <linux/dma-mapping.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/gfp.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/dma.h> +#include <asm/pgtable.h> +#include <asm/byteorder.h> /* Used by the checksum routines */ +#include <asm/idprom.h> +#include <asm/prom.h> +#include <asm/auxio.h> /* For tpe-link-test? setting */ +#include <asm/irq.h> + +#define DRV_NAME "sunlance" +#define DRV_VERSION "2.02" +#define DRV_RELDATE "8/24/03" +#define DRV_AUTHOR "Miguel de Icaza (miguel@nuclecu.unam.mx)" + +static char version[] = + DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " " DRV_AUTHOR "\n"; + +MODULE_VERSION(DRV_VERSION); +MODULE_AUTHOR(DRV_AUTHOR); +MODULE_DESCRIPTION("Sun Lance ethernet driver"); +MODULE_LICENSE("GPL"); + +/* Define: 2^4 Tx buffers and 2^4 Rx buffers */ +#ifndef LANCE_LOG_TX_BUFFERS +#define LANCE_LOG_TX_BUFFERS 4 +#define LANCE_LOG_RX_BUFFERS 4 +#endif + +#define LE_CSR0 0 +#define LE_CSR1 1 +#define LE_CSR2 2 +#define LE_CSR3 3 + +#define LE_MO_PROM 0x8000 /* Enable promiscuous mode */ + +#define LE_C0_ERR 0x8000 /* Error: set if BAB, SQE, MISS or ME is set */ +#define LE_C0_BABL 0x4000 /* BAB: Babble: tx timeout. */ +#define LE_C0_CERR 0x2000 /* SQE: Signal quality error */ +#define LE_C0_MISS 0x1000 /* MISS: Missed a packet */ +#define LE_C0_MERR 0x0800 /* ME: Memory error */ +#define LE_C0_RINT 0x0400 /* Received interrupt */ +#define LE_C0_TINT 0x0200 /* Transmitter Interrupt */ +#define LE_C0_IDON 0x0100 /* IFIN: Init finished. */ +#define LE_C0_INTR 0x0080 /* Interrupt or error */ +#define LE_C0_INEA 0x0040 /* Interrupt enable */ +#define LE_C0_RXON 0x0020 /* Receiver on */ +#define LE_C0_TXON 0x0010 /* Transmitter on */ +#define LE_C0_TDMD 0x0008 /* Transmitter demand */ +#define LE_C0_STOP 0x0004 /* Stop the card */ +#define LE_C0_STRT 0x0002 /* Start the card */ +#define LE_C0_INIT 0x0001 /* Init the card */ + +#define LE_C3_BSWP 0x4 /* SWAP */ +#define LE_C3_ACON 0x2 /* ALE Control */ +#define LE_C3_BCON 0x1 /* Byte control */ + +/* Receive message descriptor 1 */ +#define LE_R1_OWN 0x80 /* Who owns the entry */ +#define LE_R1_ERR 0x40 /* Error: if FRA, OFL, CRC or BUF is set */ +#define LE_R1_FRA 0x20 /* FRA: Frame error */ +#define LE_R1_OFL 0x10 /* OFL: Frame overflow */ +#define LE_R1_CRC 0x08 /* CRC error */ +#define LE_R1_BUF 0x04 /* BUF: Buffer error */ +#define LE_R1_SOP 0x02 /* Start of packet */ +#define LE_R1_EOP 0x01 /* End of packet */ +#define LE_R1_POK 0x03 /* Packet is complete: SOP + EOP */ + +#define LE_T1_OWN 0x80 /* Lance owns the packet */ +#define LE_T1_ERR 0x40 /* Error summary */ +#define LE_T1_EMORE 0x10 /* Error: more than one retry needed */ +#define LE_T1_EONE 0x08 /* Error: one retry needed */ +#define LE_T1_EDEF 0x04 /* Error: deferred */ +#define LE_T1_SOP 0x02 /* Start of packet */ +#define LE_T1_EOP 0x01 /* End of packet */ +#define LE_T1_POK 0x03 /* Packet is complete: SOP + EOP */ + +#define LE_T3_BUF 0x8000 /* Buffer error */ +#define LE_T3_UFL 0x4000 /* Error underflow */ +#define LE_T3_LCOL 0x1000 /* Error late collision */ +#define LE_T3_CLOS 0x0800 /* Error carrier loss */ +#define LE_T3_RTY 0x0400 /* Error retry */ +#define LE_T3_TDR 0x03ff /* Time Domain Reflectometry counter */ + +#define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS)) +#define TX_RING_MOD_MASK (TX_RING_SIZE - 1) +#define TX_RING_LEN_BITS ((LANCE_LOG_TX_BUFFERS) << 29) +#define TX_NEXT(__x) (((__x)+1) & TX_RING_MOD_MASK) + +#define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS)) +#define RX_RING_MOD_MASK (RX_RING_SIZE - 1) +#define RX_RING_LEN_BITS ((LANCE_LOG_RX_BUFFERS) << 29) +#define RX_NEXT(__x) (((__x)+1) & RX_RING_MOD_MASK) + +#define PKT_BUF_SZ 1544 +#define RX_BUFF_SIZE PKT_BUF_SZ +#define TX_BUFF_SIZE PKT_BUF_SZ + +struct lance_rx_desc { + u16 rmd0; /* low address of packet */ + u8 rmd1_bits; /* descriptor bits */ + u8 rmd1_hadr; /* high address of packet */ + s16 length; /* This length is 2s complement (negative)! + * Buffer length + */ + u16 mblength; /* This is the actual number of bytes received */ +}; + +struct lance_tx_desc { + u16 tmd0; /* low address of packet */ + u8 tmd1_bits; /* descriptor bits */ + u8 tmd1_hadr; /* high address of packet */ + s16 length; /* Length is 2s complement (negative)! */ + u16 misc; +}; + +/* The LANCE initialization block, described in databook. */ +/* On the Sparc, this block should be on a DMA region */ +struct lance_init_block { + u16 mode; /* Pre-set mode (reg. 15) */ + u8 phys_addr[6]; /* Physical ethernet address */ + u32 filter[2]; /* Multicast filter. */ + + /* Receive and transmit ring base, along with extra bits. */ + u16 rx_ptr; /* receive descriptor addr */ + u16 rx_len; /* receive len and high addr */ + u16 tx_ptr; /* transmit descriptor addr */ + u16 tx_len; /* transmit len and high addr */ + + /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */ + struct lance_rx_desc brx_ring[RX_RING_SIZE]; + struct lance_tx_desc btx_ring[TX_RING_SIZE]; + + u8 tx_buf [TX_RING_SIZE][TX_BUFF_SIZE]; + u8 pad[2]; /* align rx_buf for copy_and_sum(). */ + u8 rx_buf [RX_RING_SIZE][RX_BUFF_SIZE]; +}; + +#define libdesc_offset(rt, elem) \ +((__u32)(((unsigned long)(&(((struct lance_init_block *)0)->rt[elem]))))) + +#define libbuff_offset(rt, elem) \ +((__u32)(((unsigned long)(&(((struct lance_init_block *)0)->rt[elem][0]))))) + +struct lance_private { + void __iomem *lregs; /* Lance RAP/RDP regs. */ + void __iomem *dregs; /* DMA controller regs. */ + struct lance_init_block __iomem *init_block_iomem; + struct lance_init_block *init_block_mem; + + spinlock_t lock; + + int rx_new, tx_new; + int rx_old, tx_old; + + struct platform_device *ledma; /* If set this points to ledma */ + char tpe; /* cable-selection is TPE */ + char auto_select; /* cable-selection by carrier */ + char burst_sizes; /* ledma SBus burst sizes */ + char pio_buffer; /* init block in PIO space? */ + + unsigned short busmaster_regval; + + void (*init_ring)(struct net_device *); + void (*rx)(struct net_device *); + void (*tx)(struct net_device *); + + char *name; + dma_addr_t init_block_dvma; + struct net_device *dev; /* Backpointer */ + struct platform_device *op; + struct platform_device *lebuffer; + struct timer_list multicast_timer; +}; + +#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ + lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:\ + lp->tx_old - lp->tx_new-1) + +/* Lance registers. */ +#define RDP 0x00UL /* register data port */ +#define RAP 0x02UL /* register address port */ +#define LANCE_REG_SIZE 0x04UL + +#define STOP_LANCE(__lp) \ +do { void __iomem *__base = (__lp)->lregs; \ + sbus_writew(LE_CSR0, __base + RAP); \ + sbus_writew(LE_C0_STOP, __base + RDP); \ +} while (0) + +int sparc_lance_debug = 2; + +/* The Lance uses 24 bit addresses */ +/* On the Sun4c the DVMA will provide the remaining bytes for us */ +/* On the Sun4m we have to instruct the ledma to provide them */ +/* Even worse, on scsi/ether SBUS cards, the init block and the + * transmit/receive buffers are addresses as offsets from absolute + * zero on the lebuffer PIO area. -DaveM + */ + +#define LANCE_ADDR(x) ((long)(x) & ~0xff000000) + +/* Load the CSR registers */ +static void load_csrs(struct lance_private *lp) +{ + u32 leptr; + + if (lp->pio_buffer) + leptr = 0; + else + leptr = LANCE_ADDR(lp->init_block_dvma); + + sbus_writew(LE_CSR1, lp->lregs + RAP); + sbus_writew(leptr & 0xffff, lp->lregs + RDP); + sbus_writew(LE_CSR2, lp->lregs + RAP); + sbus_writew(leptr >> 16, lp->lregs + RDP); + sbus_writew(LE_CSR3, lp->lregs + RAP); + sbus_writew(lp->busmaster_regval, lp->lregs + RDP); + + /* Point back to csr0 */ + sbus_writew(LE_CSR0, lp->lregs + RAP); +} + +/* Setup the Lance Rx and Tx rings */ +static void lance_init_ring_dvma(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_init_block *ib = lp->init_block_mem; + dma_addr_t aib = lp->init_block_dvma; + __u32 leptr; + int i; + + /* Lock out other processes while setting up hardware */ + netif_stop_queue(dev); + lp->rx_new = lp->tx_new = 0; + lp->rx_old = lp->tx_old = 0; + + /* Copy the ethernet address to the lance init block + * Note that on the sparc you need to swap the ethernet address. + */ + ib->phys_addr [0] = dev->dev_addr [1]; + ib->phys_addr [1] = dev->dev_addr [0]; + ib->phys_addr [2] = dev->dev_addr [3]; + ib->phys_addr [3] = dev->dev_addr [2]; + ib->phys_addr [4] = dev->dev_addr [5]; + ib->phys_addr [5] = dev->dev_addr [4]; + + /* Setup the Tx ring entries */ + for (i = 0; i < TX_RING_SIZE; i++) { + leptr = LANCE_ADDR(aib + libbuff_offset(tx_buf, i)); + ib->btx_ring [i].tmd0 = leptr; + ib->btx_ring [i].tmd1_hadr = leptr >> 16; + ib->btx_ring [i].tmd1_bits = 0; + ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */ + ib->btx_ring [i].misc = 0; + } + + /* Setup the Rx ring entries */ + for (i = 0; i < RX_RING_SIZE; i++) { + leptr = LANCE_ADDR(aib + libbuff_offset(rx_buf, i)); + + ib->brx_ring [i].rmd0 = leptr; + ib->brx_ring [i].rmd1_hadr = leptr >> 16; + ib->brx_ring [i].rmd1_bits = LE_R1_OWN; + ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000; + ib->brx_ring [i].mblength = 0; + } + + /* Setup the initialization block */ + + /* Setup rx descriptor pointer */ + leptr = LANCE_ADDR(aib + libdesc_offset(brx_ring, 0)); + ib->rx_len = (LANCE_LOG_RX_BUFFERS << 13) | (leptr >> 16); + ib->rx_ptr = leptr; + + /* Setup tx descriptor pointer */ + leptr = LANCE_ADDR(aib + libdesc_offset(btx_ring, 0)); + ib->tx_len = (LANCE_LOG_TX_BUFFERS << 13) | (leptr >> 16); + ib->tx_ptr = leptr; +} + +static void lance_init_ring_pio(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_init_block __iomem *ib = lp->init_block_iomem; + u32 leptr; + int i; + + /* Lock out other processes while setting up hardware */ + netif_stop_queue(dev); + lp->rx_new = lp->tx_new = 0; + lp->rx_old = lp->tx_old = 0; + + /* Copy the ethernet address to the lance init block + * Note that on the sparc you need to swap the ethernet address. + */ + sbus_writeb(dev->dev_addr[1], &ib->phys_addr[0]); + sbus_writeb(dev->dev_addr[0], &ib->phys_addr[1]); + sbus_writeb(dev->dev_addr[3], &ib->phys_addr[2]); + sbus_writeb(dev->dev_addr[2], &ib->phys_addr[3]); + sbus_writeb(dev->dev_addr[5], &ib->phys_addr[4]); + sbus_writeb(dev->dev_addr[4], &ib->phys_addr[5]); + + /* Setup the Tx ring entries */ + for (i = 0; i < TX_RING_SIZE; i++) { + leptr = libbuff_offset(tx_buf, i); + sbus_writew(leptr, &ib->btx_ring [i].tmd0); + sbus_writeb(leptr >> 16,&ib->btx_ring [i].tmd1_hadr); + sbus_writeb(0, &ib->btx_ring [i].tmd1_bits); + + /* The ones required by tmd2 */ + sbus_writew(0xf000, &ib->btx_ring [i].length); + sbus_writew(0, &ib->btx_ring [i].misc); + } + + /* Setup the Rx ring entries */ + for (i = 0; i < RX_RING_SIZE; i++) { + leptr = libbuff_offset(rx_buf, i); + + sbus_writew(leptr, &ib->brx_ring [i].rmd0); + sbus_writeb(leptr >> 16,&ib->brx_ring [i].rmd1_hadr); + sbus_writeb(LE_R1_OWN, &ib->brx_ring [i].rmd1_bits); + sbus_writew(-RX_BUFF_SIZE|0xf000, + &ib->brx_ring [i].length); + sbus_writew(0, &ib->brx_ring [i].mblength); + } + + /* Setup the initialization block */ + + /* Setup rx descriptor pointer */ + leptr = libdesc_offset(brx_ring, 0); + sbus_writew((LANCE_LOG_RX_BUFFERS << 13) | (leptr >> 16), + &ib->rx_len); + sbus_writew(leptr, &ib->rx_ptr); + + /* Setup tx descriptor pointer */ + leptr = libdesc_offset(btx_ring, 0); + sbus_writew((LANCE_LOG_TX_BUFFERS << 13) | (leptr >> 16), + &ib->tx_len); + sbus_writew(leptr, &ib->tx_ptr); +} + +static void init_restart_ledma(struct lance_private *lp) +{ + u32 csr = sbus_readl(lp->dregs + DMA_CSR); + + if (!(csr & DMA_HNDL_ERROR)) { + /* E-Cache draining */ + while (sbus_readl(lp->dregs + DMA_CSR) & DMA_FIFO_ISDRAIN) + barrier(); + } + + csr = sbus_readl(lp->dregs + DMA_CSR); + csr &= ~DMA_E_BURSTS; + if (lp->burst_sizes & DMA_BURST32) + csr |= DMA_E_BURST32; + else + csr |= DMA_E_BURST16; + + csr |= (DMA_DSBL_RD_DRN | DMA_DSBL_WR_INV | DMA_FIFO_INV); + + if (lp->tpe) + csr |= DMA_EN_ENETAUI; + else + csr &= ~DMA_EN_ENETAUI; + udelay(20); + sbus_writel(csr, lp->dregs + DMA_CSR); + udelay(200); +} + +static int init_restart_lance(struct lance_private *lp) +{ + u16 regval = 0; + int i; + + if (lp->dregs) + init_restart_ledma(lp); + + sbus_writew(LE_CSR0, lp->lregs + RAP); + sbus_writew(LE_C0_INIT, lp->lregs + RDP); + + /* Wait for the lance to complete initialization */ + for (i = 0; i < 100; i++) { + regval = sbus_readw(lp->lregs + RDP); + + if (regval & (LE_C0_ERR | LE_C0_IDON)) + break; + barrier(); + } + if (i == 100 || (regval & LE_C0_ERR)) { + printk(KERN_ERR "LANCE unopened after %d ticks, csr0=%4.4x.\n", + i, regval); + if (lp->dregs) + printk("dcsr=%8.8x\n", sbus_readl(lp->dregs + DMA_CSR)); + return -1; + } + + /* Clear IDON by writing a "1", enable interrupts and start lance */ + sbus_writew(LE_C0_IDON, lp->lregs + RDP); + sbus_writew(LE_C0_INEA | LE_C0_STRT, lp->lregs + RDP); + + if (lp->dregs) { + u32 csr = sbus_readl(lp->dregs + DMA_CSR); + + csr |= DMA_INT_ENAB; + sbus_writel(csr, lp->dregs + DMA_CSR); + } + + return 0; +} + +static void lance_rx_dvma(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_init_block *ib = lp->init_block_mem; + struct lance_rx_desc *rd; + u8 bits; + int len, entry = lp->rx_new; + struct sk_buff *skb; + + for (rd = &ib->brx_ring [entry]; + !((bits = rd->rmd1_bits) & LE_R1_OWN); + rd = &ib->brx_ring [entry]) { + + /* We got an incomplete frame? */ + if ((bits & LE_R1_POK) != LE_R1_POK) { + dev->stats.rx_over_errors++; + dev->stats.rx_errors++; + } else if (bits & LE_R1_ERR) { + /* Count only the end frame as a rx error, + * not the beginning + */ + if (bits & LE_R1_BUF) dev->stats.rx_fifo_errors++; + if (bits & LE_R1_CRC) dev->stats.rx_crc_errors++; + if (bits & LE_R1_OFL) dev->stats.rx_over_errors++; + if (bits & LE_R1_FRA) dev->stats.rx_frame_errors++; + if (bits & LE_R1_EOP) dev->stats.rx_errors++; + } else { + len = (rd->mblength & 0xfff) - 4; + skb = dev_alloc_skb(len + 2); + + if (skb == NULL) { + printk(KERN_INFO "%s: Memory squeeze, deferring packet.\n", + dev->name); + dev->stats.rx_dropped++; + rd->mblength = 0; + rd->rmd1_bits = LE_R1_OWN; + lp->rx_new = RX_NEXT(entry); + return; + } + + dev->stats.rx_bytes += len; + + skb_reserve(skb, 2); /* 16 byte align */ + skb_put(skb, len); /* make room */ + skb_copy_to_linear_data(skb, + (unsigned char *)&(ib->rx_buf [entry][0]), + len); + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + dev->stats.rx_packets++; + } + + /* Return the packet to the pool */ + rd->mblength = 0; + rd->rmd1_bits = LE_R1_OWN; + entry = RX_NEXT(entry); + } + + lp->rx_new = entry; +} + +static void lance_tx_dvma(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_init_block *ib = lp->init_block_mem; + int i, j; + + spin_lock(&lp->lock); + + j = lp->tx_old; + for (i = j; i != lp->tx_new; i = j) { + struct lance_tx_desc *td = &ib->btx_ring [i]; + u8 bits = td->tmd1_bits; + + /* If we hit a packet not owned by us, stop */ + if (bits & LE_T1_OWN) + break; + + if (bits & LE_T1_ERR) { + u16 status = td->misc; + + dev->stats.tx_errors++; + if (status & LE_T3_RTY) dev->stats.tx_aborted_errors++; + if (status & LE_T3_LCOL) dev->stats.tx_window_errors++; + + if (status & LE_T3_CLOS) { + dev->stats.tx_carrier_errors++; + if (lp->auto_select) { + lp->tpe = 1 - lp->tpe; + printk(KERN_NOTICE "%s: Carrier Lost, trying %s\n", + dev->name, lp->tpe?"TPE":"AUI"); + STOP_LANCE(lp); + lp->init_ring(dev); + load_csrs(lp); + init_restart_lance(lp); + goto out; + } + } + + /* Buffer errors and underflows turn off the + * transmitter, restart the adapter. + */ + if (status & (LE_T3_BUF|LE_T3_UFL)) { + dev->stats.tx_fifo_errors++; + + printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, restarting\n", + dev->name); + STOP_LANCE(lp); + lp->init_ring(dev); + load_csrs(lp); + init_restart_lance(lp); + goto out; + } + } else if ((bits & LE_T1_POK) == LE_T1_POK) { + /* + * So we don't count the packet more than once. + */ + td->tmd1_bits = bits & ~(LE_T1_POK); + + /* One collision before packet was sent. */ + if (bits & LE_T1_EONE) + dev->stats.collisions++; + + /* More than one collision, be optimistic. */ + if (bits & LE_T1_EMORE) + dev->stats.collisions += 2; + + dev->stats.tx_packets++; + } + + j = TX_NEXT(j); + } + lp->tx_old = j; +out: + if (netif_queue_stopped(dev) && + TX_BUFFS_AVAIL > 0) + netif_wake_queue(dev); + + spin_unlock(&lp->lock); +} + +static void lance_piocopy_to_skb(struct sk_buff *skb, void __iomem *piobuf, int len) +{ + u16 *p16 = (u16 *) skb->data; + u32 *p32; + u8 *p8; + void __iomem *pbuf = piobuf; + + /* We know here that both src and dest are on a 16bit boundary. */ + *p16++ = sbus_readw(pbuf); + p32 = (u32 *) p16; + pbuf += 2; + len -= 2; + + while (len >= 4) { + *p32++ = sbus_readl(pbuf); + pbuf += 4; + len -= 4; + } + p8 = (u8 *) p32; + if (len >= 2) { + p16 = (u16 *) p32; + *p16++ = sbus_readw(pbuf); + pbuf += 2; + len -= 2; + p8 = (u8 *) p16; + } + if (len >= 1) + *p8 = sbus_readb(pbuf); +} + +static void lance_rx_pio(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_init_block __iomem *ib = lp->init_block_iomem; + struct lance_rx_desc __iomem *rd; + unsigned char bits; + int len, entry; + struct sk_buff *skb; + + entry = lp->rx_new; + for (rd = &ib->brx_ring [entry]; + !((bits = sbus_readb(&rd->rmd1_bits)) & LE_R1_OWN); + rd = &ib->brx_ring [entry]) { + + /* We got an incomplete frame? */ + if ((bits & LE_R1_POK) != LE_R1_POK) { + dev->stats.rx_over_errors++; + dev->stats.rx_errors++; + } else if (bits & LE_R1_ERR) { + /* Count only the end frame as a rx error, + * not the beginning + */ + if (bits & LE_R1_BUF) dev->stats.rx_fifo_errors++; + if (bits & LE_R1_CRC) dev->stats.rx_crc_errors++; + if (bits & LE_R1_OFL) dev->stats.rx_over_errors++; + if (bits & LE_R1_FRA) dev->stats.rx_frame_errors++; + if (bits & LE_R1_EOP) dev->stats.rx_errors++; + } else { + len = (sbus_readw(&rd->mblength) & 0xfff) - 4; + skb = dev_alloc_skb(len + 2); + + if (skb == NULL) { + printk(KERN_INFO "%s: Memory squeeze, deferring packet.\n", + dev->name); + dev->stats.rx_dropped++; + sbus_writew(0, &rd->mblength); + sbus_writeb(LE_R1_OWN, &rd->rmd1_bits); + lp->rx_new = RX_NEXT(entry); + return; + } + + dev->stats.rx_bytes += len; + + skb_reserve (skb, 2); /* 16 byte align */ + skb_put(skb, len); /* make room */ + lance_piocopy_to_skb(skb, &(ib->rx_buf[entry][0]), len); + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + dev->stats.rx_packets++; + } + + /* Return the packet to the pool */ + sbus_writew(0, &rd->mblength); + sbus_writeb(LE_R1_OWN, &rd->rmd1_bits); + entry = RX_NEXT(entry); + } + + lp->rx_new = entry; +} + +static void lance_tx_pio(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_init_block __iomem *ib = lp->init_block_iomem; + int i, j; + + spin_lock(&lp->lock); + + j = lp->tx_old; + for (i = j; i != lp->tx_new; i = j) { + struct lance_tx_desc __iomem *td = &ib->btx_ring [i]; + u8 bits = sbus_readb(&td->tmd1_bits); + + /* If we hit a packet not owned by us, stop */ + if (bits & LE_T1_OWN) + break; + + if (bits & LE_T1_ERR) { + u16 status = sbus_readw(&td->misc); + + dev->stats.tx_errors++; + if (status & LE_T3_RTY) dev->stats.tx_aborted_errors++; + if (status & LE_T3_LCOL) dev->stats.tx_window_errors++; + + if (status & LE_T3_CLOS) { + dev->stats.tx_carrier_errors++; + if (lp->auto_select) { + lp->tpe = 1 - lp->tpe; + printk(KERN_NOTICE "%s: Carrier Lost, trying %s\n", + dev->name, lp->tpe?"TPE":"AUI"); + STOP_LANCE(lp); + lp->init_ring(dev); + load_csrs(lp); + init_restart_lance(lp); + goto out; + } + } + + /* Buffer errors and underflows turn off the + * transmitter, restart the adapter. + */ + if (status & (LE_T3_BUF|LE_T3_UFL)) { + dev->stats.tx_fifo_errors++; + + printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, restarting\n", + dev->name); + STOP_LANCE(lp); + lp->init_ring(dev); + load_csrs(lp); + init_restart_lance(lp); + goto out; + } + } else if ((bits & LE_T1_POK) == LE_T1_POK) { + /* + * So we don't count the packet more than once. + */ + sbus_writeb(bits & ~(LE_T1_POK), &td->tmd1_bits); + + /* One collision before packet was sent. */ + if (bits & LE_T1_EONE) + dev->stats.collisions++; + + /* More than one collision, be optimistic. */ + if (bits & LE_T1_EMORE) + dev->stats.collisions += 2; + + dev->stats.tx_packets++; + } + + j = TX_NEXT(j); + } + lp->tx_old = j; + + if (netif_queue_stopped(dev) && + TX_BUFFS_AVAIL > 0) + netif_wake_queue(dev); +out: + spin_unlock(&lp->lock); +} + +static irqreturn_t lance_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct lance_private *lp = netdev_priv(dev); + int csr0; + + sbus_writew(LE_CSR0, lp->lregs + RAP); + csr0 = sbus_readw(lp->lregs + RDP); + + /* Acknowledge all the interrupt sources ASAP */ + sbus_writew(csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT), + lp->lregs + RDP); + + if ((csr0 & LE_C0_ERR) != 0) { + /* Clear the error condition */ + sbus_writew((LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | + LE_C0_CERR | LE_C0_MERR), + lp->lregs + RDP); + } + + if (csr0 & LE_C0_RINT) + lp->rx(dev); + + if (csr0 & LE_C0_TINT) + lp->tx(dev); + + if (csr0 & LE_C0_BABL) + dev->stats.tx_errors++; + + if (csr0 & LE_C0_MISS) + dev->stats.rx_errors++; + + if (csr0 & LE_C0_MERR) { + if (lp->dregs) { + u32 addr = sbus_readl(lp->dregs + DMA_ADDR); + + printk(KERN_ERR "%s: Memory error, status %04x, addr %06x\n", + dev->name, csr0, addr & 0xffffff); + } else { + printk(KERN_ERR "%s: Memory error, status %04x\n", + dev->name, csr0); + } + + sbus_writew(LE_C0_STOP, lp->lregs + RDP); + + if (lp->dregs) { + u32 dma_csr = sbus_readl(lp->dregs + DMA_CSR); + + dma_csr |= DMA_FIFO_INV; + sbus_writel(dma_csr, lp->dregs + DMA_CSR); + } + + lp->init_ring(dev); + load_csrs(lp); + init_restart_lance(lp); + netif_wake_queue(dev); + } + + sbus_writew(LE_C0_INEA, lp->lregs + RDP); + + return IRQ_HANDLED; +} + +/* Build a fake network packet and send it to ourselves. */ +static void build_fake_packet(struct lance_private *lp) +{ + struct net_device *dev = lp->dev; + int i, entry; + + entry = lp->tx_new & TX_RING_MOD_MASK; + if (lp->pio_buffer) { + struct lance_init_block __iomem *ib = lp->init_block_iomem; + u16 __iomem *packet = (u16 __iomem *) &(ib->tx_buf[entry][0]); + struct ethhdr __iomem *eth = (struct ethhdr __iomem *) packet; + for (i = 0; i < (ETH_ZLEN / sizeof(u16)); i++) + sbus_writew(0, &packet[i]); + for (i = 0; i < 6; i++) { + sbus_writeb(dev->dev_addr[i], ð->h_dest[i]); + sbus_writeb(dev->dev_addr[i], ð->h_source[i]); + } + sbus_writew((-ETH_ZLEN) | 0xf000, &ib->btx_ring[entry].length); + sbus_writew(0, &ib->btx_ring[entry].misc); + sbus_writeb(LE_T1_POK|LE_T1_OWN, &ib->btx_ring[entry].tmd1_bits); + } else { + struct lance_init_block *ib = lp->init_block_mem; + u16 *packet = (u16 *) &(ib->tx_buf[entry][0]); + struct ethhdr *eth = (struct ethhdr *) packet; + memset(packet, 0, ETH_ZLEN); + for (i = 0; i < 6; i++) { + eth->h_dest[i] = dev->dev_addr[i]; + eth->h_source[i] = dev->dev_addr[i]; + } + ib->btx_ring[entry].length = (-ETH_ZLEN) | 0xf000; + ib->btx_ring[entry].misc = 0; + ib->btx_ring[entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN); + } + lp->tx_new = TX_NEXT(entry); +} + +static int lance_open(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + int status = 0; + + STOP_LANCE(lp); + + if (request_irq(dev->irq, lance_interrupt, IRQF_SHARED, + lancestr, (void *) dev)) { + printk(KERN_ERR "Lance: Can't get irq %d\n", dev->irq); + return -EAGAIN; + } + + /* On the 4m, setup the ledma to provide the upper bits for buffers */ + if (lp->dregs) { + u32 regval = lp->init_block_dvma & 0xff000000; + + sbus_writel(regval, lp->dregs + DMA_TEST); + } + + /* Set mode and clear multicast filter only at device open, + * so that lance_init_ring() called at any error will not + * forget multicast filters. + * + * BTW it is common bug in all lance drivers! --ANK + */ + if (lp->pio_buffer) { + struct lance_init_block __iomem *ib = lp->init_block_iomem; + sbus_writew(0, &ib->mode); + sbus_writel(0, &ib->filter[0]); + sbus_writel(0, &ib->filter[1]); + } else { + struct lance_init_block *ib = lp->init_block_mem; + ib->mode = 0; + ib->filter [0] = 0; + ib->filter [1] = 0; + } + + lp->init_ring(dev); + load_csrs(lp); + + netif_start_queue(dev); + + status = init_restart_lance(lp); + if (!status && lp->auto_select) { + build_fake_packet(lp); + sbus_writew(LE_C0_INEA | LE_C0_TDMD, lp->lregs + RDP); + } + + return status; +} + +static int lance_close(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + + netif_stop_queue(dev); + del_timer_sync(&lp->multicast_timer); + + STOP_LANCE(lp); + + free_irq(dev->irq, (void *) dev); + return 0; +} + +static int lance_reset(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + int status; + + STOP_LANCE(lp); + + /* On the 4m, reset the dma too */ + if (lp->dregs) { + u32 csr, addr; + + printk(KERN_ERR "resetting ledma\n"); + csr = sbus_readl(lp->dregs + DMA_CSR); + sbus_writel(csr | DMA_RST_ENET, lp->dregs + DMA_CSR); + udelay(200); + sbus_writel(csr & ~DMA_RST_ENET, lp->dregs + DMA_CSR); + + addr = lp->init_block_dvma & 0xff000000; + sbus_writel(addr, lp->dregs + DMA_TEST); + } + lp->init_ring(dev); + load_csrs(lp); + dev->trans_start = jiffies; /* prevent tx timeout */ + status = init_restart_lance(lp); + return status; +} + +static void lance_piocopy_from_skb(void __iomem *dest, unsigned char *src, int len) +{ + void __iomem *piobuf = dest; + u32 *p32; + u16 *p16; + u8 *p8; + + switch ((unsigned long)src & 0x3) { + case 0: + p32 = (u32 *) src; + while (len >= 4) { + sbus_writel(*p32, piobuf); + p32++; + piobuf += 4; + len -= 4; + } + src = (char *) p32; + break; + case 1: + case 3: + p8 = (u8 *) src; + while (len >= 4) { + u32 val; + + val = p8[0] << 24; + val |= p8[1] << 16; + val |= p8[2] << 8; + val |= p8[3]; + sbus_writel(val, piobuf); + p8 += 4; + piobuf += 4; + len -= 4; + } + src = (char *) p8; + break; + case 2: + p16 = (u16 *) src; + while (len >= 4) { + u32 val = p16[0]<<16 | p16[1]; + sbus_writel(val, piobuf); + p16 += 2; + piobuf += 4; + len -= 4; + } + src = (char *) p16; + break; + } + if (len >= 2) { + u16 val = src[0] << 8 | src[1]; + sbus_writew(val, piobuf); + src += 2; + piobuf += 2; + len -= 2; + } + if (len >= 1) + sbus_writeb(src[0], piobuf); +} + +static void lance_piozero(void __iomem *dest, int len) +{ + void __iomem *piobuf = dest; + + if ((unsigned long)piobuf & 1) { + sbus_writeb(0, piobuf); + piobuf += 1; + len -= 1; + if (len == 0) + return; + } + if (len == 1) { + sbus_writeb(0, piobuf); + return; + } + if ((unsigned long)piobuf & 2) { + sbus_writew(0, piobuf); + piobuf += 2; + len -= 2; + if (len == 0) + return; + } + while (len >= 4) { + sbus_writel(0, piobuf); + piobuf += 4; + len -= 4; + } + if (len >= 2) { + sbus_writew(0, piobuf); + piobuf += 2; + len -= 2; + } + if (len >= 1) + sbus_writeb(0, piobuf); +} + +static void lance_tx_timeout(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + + printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n", + dev->name, sbus_readw(lp->lregs + RDP)); + lance_reset(dev); + netif_wake_queue(dev); +} + +static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + int entry, skblen, len; + + skblen = skb->len; + + len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen; + + spin_lock_irq(&lp->lock); + + dev->stats.tx_bytes += len; + + entry = lp->tx_new & TX_RING_MOD_MASK; + if (lp->pio_buffer) { + struct lance_init_block __iomem *ib = lp->init_block_iomem; + sbus_writew((-len) | 0xf000, &ib->btx_ring[entry].length); + sbus_writew(0, &ib->btx_ring[entry].misc); + lance_piocopy_from_skb(&ib->tx_buf[entry][0], skb->data, skblen); + if (len != skblen) + lance_piozero(&ib->tx_buf[entry][skblen], len - skblen); + sbus_writeb(LE_T1_POK | LE_T1_OWN, &ib->btx_ring[entry].tmd1_bits); + } else { + struct lance_init_block *ib = lp->init_block_mem; + ib->btx_ring [entry].length = (-len) | 0xf000; + ib->btx_ring [entry].misc = 0; + skb_copy_from_linear_data(skb, &ib->tx_buf [entry][0], skblen); + if (len != skblen) + memset((char *) &ib->tx_buf [entry][skblen], 0, len - skblen); + ib->btx_ring [entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN); + } + + lp->tx_new = TX_NEXT(entry); + + if (TX_BUFFS_AVAIL <= 0) + netif_stop_queue(dev); + + /* Kick the lance: transmit now */ + sbus_writew(LE_C0_INEA | LE_C0_TDMD, lp->lregs + RDP); + + /* Read back CSR to invalidate the E-Cache. + * This is needed, because DMA_DSBL_WR_INV is set. + */ + if (lp->dregs) + sbus_readw(lp->lregs + RDP); + + spin_unlock_irq(&lp->lock); + + dev_kfree_skb(skb); + + return NETDEV_TX_OK; +} + +/* taken from the depca driver */ +static void lance_load_multicast(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + struct netdev_hw_addr *ha; + u32 crc; + u32 val; + + /* set all multicast bits */ + if (dev->flags & IFF_ALLMULTI) + val = ~0; + else + val = 0; + + if (lp->pio_buffer) { + struct lance_init_block __iomem *ib = lp->init_block_iomem; + sbus_writel(val, &ib->filter[0]); + sbus_writel(val, &ib->filter[1]); + } else { + struct lance_init_block *ib = lp->init_block_mem; + ib->filter [0] = val; + ib->filter [1] = val; + } + + if (dev->flags & IFF_ALLMULTI) + return; + + /* Add addresses */ + netdev_for_each_mc_addr(ha, dev) { + crc = ether_crc_le(6, ha->addr); + crc = crc >> 26; + if (lp->pio_buffer) { + struct lance_init_block __iomem *ib = lp->init_block_iomem; + u16 __iomem *mcast_table = (u16 __iomem *) &ib->filter; + u16 tmp = sbus_readw(&mcast_table[crc>>4]); + tmp |= 1 << (crc & 0xf); + sbus_writew(tmp, &mcast_table[crc>>4]); + } else { + struct lance_init_block *ib = lp->init_block_mem; + u16 *mcast_table = (u16 *) &ib->filter; + mcast_table [crc >> 4] |= 1 << (crc & 0xf); + } + } +} + +static void lance_set_multicast(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_init_block *ib_mem = lp->init_block_mem; + struct lance_init_block __iomem *ib_iomem = lp->init_block_iomem; + u16 mode; + + if (!netif_running(dev)) + return; + + if (lp->tx_old != lp->tx_new) { + mod_timer(&lp->multicast_timer, jiffies + 4); + netif_wake_queue(dev); + return; + } + + netif_stop_queue(dev); + + STOP_LANCE(lp); + lp->init_ring(dev); + + if (lp->pio_buffer) + mode = sbus_readw(&ib_iomem->mode); + else + mode = ib_mem->mode; + if (dev->flags & IFF_PROMISC) { + mode |= LE_MO_PROM; + if (lp->pio_buffer) + sbus_writew(mode, &ib_iomem->mode); + else + ib_mem->mode = mode; + } else { + mode &= ~LE_MO_PROM; + if (lp->pio_buffer) + sbus_writew(mode, &ib_iomem->mode); + else + ib_mem->mode = mode; + lance_load_multicast(dev); + } + load_csrs(lp); + init_restart_lance(lp); + netif_wake_queue(dev); +} + +static void lance_set_multicast_retry(unsigned long _opaque) +{ + struct net_device *dev = (struct net_device *) _opaque; + + lance_set_multicast(dev); +} + +static void lance_free_hwresources(struct lance_private *lp) +{ + if (lp->lregs) + of_iounmap(&lp->op->resource[0], lp->lregs, LANCE_REG_SIZE); + if (lp->dregs) { + struct platform_device *ledma = lp->ledma; + + of_iounmap(&ledma->resource[0], lp->dregs, + resource_size(&ledma->resource[0])); + } + if (lp->init_block_iomem) { + of_iounmap(&lp->lebuffer->resource[0], lp->init_block_iomem, + sizeof(struct lance_init_block)); + } else if (lp->init_block_mem) { + dma_free_coherent(&lp->op->dev, + sizeof(struct lance_init_block), + lp->init_block_mem, + lp->init_block_dvma); + } +} + +/* Ethtool support... */ +static void sparc_lance_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) +{ + strcpy(info->driver, "sunlance"); + strcpy(info->version, "2.02"); +} + +static const struct ethtool_ops sparc_lance_ethtool_ops = { + .get_drvinfo = sparc_lance_get_drvinfo, + .get_link = ethtool_op_get_link, +}; + +static const struct net_device_ops sparc_lance_ops = { + .ndo_open = lance_open, + .ndo_stop = lance_close, + .ndo_start_xmit = lance_start_xmit, + .ndo_set_rx_mode = lance_set_multicast, + .ndo_tx_timeout = lance_tx_timeout, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, +}; + +static int __devinit sparc_lance_probe_one(struct platform_device *op, + struct platform_device *ledma, + struct platform_device *lebuffer) +{ + struct device_node *dp = op->dev.of_node; + static unsigned version_printed; + struct lance_private *lp; + struct net_device *dev; + int i; + + dev = alloc_etherdev(sizeof(struct lance_private) + 8); + if (!dev) + return -ENOMEM; + + lp = netdev_priv(dev); + + if (sparc_lance_debug && version_printed++ == 0) + printk (KERN_INFO "%s", version); + + spin_lock_init(&lp->lock); + + /* Copy the IDPROM ethernet address to the device structure, later we + * will copy the address in the device structure to the lance + * initialization block. + */ + for (i = 0; i < 6; i++) + dev->dev_addr[i] = idprom->id_ethaddr[i]; + + /* Get the IO region */ + lp->lregs = of_ioremap(&op->resource[0], 0, + LANCE_REG_SIZE, lancestr); + if (!lp->lregs) { + printk(KERN_ERR "SunLance: Cannot map registers.\n"); + goto fail; + } + + lp->ledma = ledma; + if (lp->ledma) { + lp->dregs = of_ioremap(&ledma->resource[0], 0, + resource_size(&ledma->resource[0]), + "ledma"); + if (!lp->dregs) { + printk(KERN_ERR "SunLance: Cannot map " + "ledma registers.\n"); + goto fail; + } + } + + lp->op = op; + lp->lebuffer = lebuffer; + if (lebuffer) { + /* sanity check */ + if (lebuffer->resource[0].start & 7) { + printk(KERN_ERR "SunLance: ERROR: Rx and Tx rings not on even boundary.\n"); + goto fail; + } + lp->init_block_iomem = + of_ioremap(&lebuffer->resource[0], 0, + sizeof(struct lance_init_block), "lebuffer"); + if (!lp->init_block_iomem) { + printk(KERN_ERR "SunLance: Cannot map PIO buffer.\n"); + goto fail; + } + lp->init_block_dvma = 0; + lp->pio_buffer = 1; + lp->init_ring = lance_init_ring_pio; + lp->rx = lance_rx_pio; + lp->tx = lance_tx_pio; + } else { + lp->init_block_mem = + dma_alloc_coherent(&op->dev, + sizeof(struct lance_init_block), + &lp->init_block_dvma, GFP_ATOMIC); + if (!lp->init_block_mem) { + printk(KERN_ERR "SunLance: Cannot allocate consistent DMA memory.\n"); + goto fail; + } + lp->pio_buffer = 0; + lp->init_ring = lance_init_ring_dvma; + lp->rx = lance_rx_dvma; + lp->tx = lance_tx_dvma; + } + lp->busmaster_regval = of_getintprop_default(dp, "busmaster-regval", + (LE_C3_BSWP | + LE_C3_ACON | + LE_C3_BCON)); + + lp->name = lancestr; + + lp->burst_sizes = 0; + if (lp->ledma) { + struct device_node *ledma_dp = ledma->dev.of_node; + struct device_node *sbus_dp; + unsigned int sbmask; + const char *prop; + u32 csr; + + /* Find burst-size property for ledma */ + lp->burst_sizes = of_getintprop_default(ledma_dp, + "burst-sizes", 0); + + /* ledma may be capable of fast bursts, but sbus may not. */ + sbus_dp = ledma_dp->parent; + sbmask = of_getintprop_default(sbus_dp, "burst-sizes", + DMA_BURSTBITS); + lp->burst_sizes &= sbmask; + + /* Get the cable-selection property */ + prop = of_get_property(ledma_dp, "cable-selection", NULL); + if (!prop || prop[0] == '\0') { + struct device_node *nd; + + printk(KERN_INFO "SunLance: using " + "auto-carrier-detection.\n"); + + nd = of_find_node_by_path("/options"); + if (!nd) + goto no_link_test; + + prop = of_get_property(nd, "tpe-link-test?", NULL); + if (!prop) + goto no_link_test; + + if (strcmp(prop, "true")) { + printk(KERN_NOTICE "SunLance: warning: overriding option " + "'tpe-link-test?'\n"); + printk(KERN_NOTICE "SunLance: warning: mail any problems " + "to ecd@skynet.be\n"); + auxio_set_lte(AUXIO_LTE_ON); + } +no_link_test: + lp->auto_select = 1; + lp->tpe = 0; + } else if (!strcmp(prop, "aui")) { + lp->auto_select = 0; + lp->tpe = 0; + } else { + lp->auto_select = 0; + lp->tpe = 1; + } + + /* Reset ledma */ + csr = sbus_readl(lp->dregs + DMA_CSR); + sbus_writel(csr | DMA_RST_ENET, lp->dregs + DMA_CSR); + udelay(200); + sbus_writel(csr & ~DMA_RST_ENET, lp->dregs + DMA_CSR); + } else + lp->dregs = NULL; + + lp->dev = dev; + SET_NETDEV_DEV(dev, &op->dev); + dev->watchdog_timeo = 5*HZ; + dev->ethtool_ops = &sparc_lance_ethtool_ops; + dev->netdev_ops = &sparc_lance_ops; + + dev->irq = op->archdata.irqs[0]; + + /* We cannot sleep if the chip is busy during a + * multicast list update event, because such events + * can occur from interrupts (ex. IPv6). So we + * use a timer to try again later when necessary. -DaveM + */ + init_timer(&lp->multicast_timer); + lp->multicast_timer.data = (unsigned long) dev; + lp->multicast_timer.function = lance_set_multicast_retry; + + if (register_netdev(dev)) { + printk(KERN_ERR "SunLance: Cannot register device.\n"); + goto fail; + } + + dev_set_drvdata(&op->dev, lp); + + printk(KERN_INFO "%s: LANCE %pM\n", + dev->name, dev->dev_addr); + + return 0; + +fail: + lance_free_hwresources(lp); + free_netdev(dev); + return -ENODEV; +} + +static int __devinit sunlance_sbus_probe(struct platform_device *op) +{ + struct platform_device *parent = to_platform_device(op->dev.parent); + struct device_node *parent_dp = parent->dev.of_node; + int err; + + if (!strcmp(parent_dp->name, "ledma")) { + err = sparc_lance_probe_one(op, parent, NULL); + } else if (!strcmp(parent_dp->name, "lebuffer")) { + err = sparc_lance_probe_one(op, NULL, parent); + } else + err = sparc_lance_probe_one(op, NULL, NULL); + + return err; +} + +static int __devexit sunlance_sbus_remove(struct platform_device *op) +{ + struct lance_private *lp = dev_get_drvdata(&op->dev); + struct net_device *net_dev = lp->dev; + + unregister_netdev(net_dev); + + lance_free_hwresources(lp); + + free_netdev(net_dev); + + dev_set_drvdata(&op->dev, NULL); + + return 0; +} + +static const struct of_device_id sunlance_sbus_match[] = { + { + .name = "le", + }, + {}, +}; + +MODULE_DEVICE_TABLE(of, sunlance_sbus_match); + +static struct platform_driver sunlance_sbus_driver = { + .driver = { + .name = "sunlance", + .owner = THIS_MODULE, + .of_match_table = sunlance_sbus_match, + }, + .probe = sunlance_sbus_probe, + .remove = __devexit_p(sunlance_sbus_remove), +}; + + +/* Find all the lance cards on the system and initialize them */ +static int __init sparc_lance_init(void) +{ + return platform_driver_register(&sunlance_sbus_driver); +} + +static void __exit sparc_lance_exit(void) +{ + platform_driver_unregister(&sunlance_sbus_driver); +} + +module_init(sparc_lance_init); +module_exit(sparc_lance_exit); |