diff options
Diffstat (limited to 'drivers/net/fec.c')
| -rw-r--r-- | drivers/net/fec.c | 2259 |
1 files changed, 2259 insertions, 0 deletions
diff --git a/drivers/net/fec.c b/drivers/net/fec.c new file mode 100644 index 000000000000..2c7008491378 --- /dev/null +++ b/drivers/net/fec.c @@ -0,0 +1,2259 @@ +/* + * Fast Ethernet Controller (FEC) driver for Motorola MPC8xx. + * Copyright (c) 1997 Dan Malek (dmalek@jlc.net) + * + * This version of the driver is specific to the FADS implementation, + * since the board contains control registers external to the processor + * for the control of the LevelOne LXT970 transceiver. The MPC860T manual + * describes connections using the internal parallel port I/O, which + * is basically all of Port D. + * + * Right now, I am very watseful with the buffers. I allocate memory + * pages and then divide them into 2K frame buffers. This way I know I + * have buffers large enough to hold one frame within one buffer descriptor. + * Once I get this working, I will use 64 or 128 byte CPM buffers, which + * will be much more memory efficient and will easily handle lots of + * small packets. + * + * Much better multiple PHY support by Magnus Damm. + * Copyright (c) 2000 Ericsson Radio Systems AB. + * + * Support for FEC controller of ColdFire/5270/5271/5272/5274/5275/5280/5282. + * Copyrught (c) 2001-2004 Greg Ungerer (gerg@snapgear.com) + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/ptrace.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/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/workqueue.h> +#include <linux/bitops.h> + +#include <asm/irq.h> +#include <asm/uaccess.h> +#include <asm/io.h> +#include <asm/pgtable.h> + +#if defined(CONFIG_M527x) || defined(CONFIG_M5272) || defined(CONFIG_M528x) +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include "fec.h" +#else +#include <asm/8xx_immap.h> +#include <asm/mpc8xx.h> +#include "commproc.h" +#endif + +#if defined(CONFIG_FEC2) +#define FEC_MAX_PORTS 2 +#else +#define FEC_MAX_PORTS 1 +#endif + +/* + * Define the fixed address of the FEC hardware. + */ +static unsigned int fec_hw[] = { +#if defined(CONFIG_M5272) + (MCF_MBAR + 0x840), +#elif defined(CONFIG_M527x) + (MCF_MBAR + 0x1000), + (MCF_MBAR + 0x1800), +#elif defined(CONFIG_M528x) + (MCF_MBAR + 0x1000), +#else + &(((immap_t *)IMAP_ADDR)->im_cpm.cp_fec), +#endif +}; + +static unsigned char fec_mac_default[] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; + +/* + * Some hardware gets it MAC address out of local flash memory. + * if this is non-zero then assume it is the address to get MAC from. + */ +#if defined(CONFIG_NETtel) +#define FEC_FLASHMAC 0xf0006006 +#elif defined(CONFIG_GILBARCONAP) || defined(CONFIG_SCALES) +#define FEC_FLASHMAC 0xf0006000 +#elif defined (CONFIG_MTD_KeyTechnology) +#define FEC_FLASHMAC 0xffe04000 +#elif defined(CONFIG_CANCam) +#define FEC_FLASHMAC 0xf0020000 +#else +#define FEC_FLASHMAC 0 +#endif + +unsigned char *fec_flashmac = (unsigned char *) FEC_FLASHMAC; + +/* Forward declarations of some structures to support different PHYs +*/ + +typedef struct { + uint mii_data; + void (*funct)(uint mii_reg, struct net_device *dev); +} phy_cmd_t; + +typedef struct { + uint id; + char *name; + + const phy_cmd_t *config; + const phy_cmd_t *startup; + const phy_cmd_t *ack_int; + const phy_cmd_t *shutdown; +} phy_info_t; + +/* The number of Tx and Rx buffers. These are allocated from the page + * pool. The code may assume these are power of two, so it it best + * to keep them that size. + * We don't need to allocate pages for the transmitter. We just use + * the skbuffer directly. + */ +#define FEC_ENET_RX_PAGES 8 +#define FEC_ENET_RX_FRSIZE 2048 +#define FEC_ENET_RX_FRPPG (PAGE_SIZE / FEC_ENET_RX_FRSIZE) +#define RX_RING_SIZE (FEC_ENET_RX_FRPPG * FEC_ENET_RX_PAGES) +#define FEC_ENET_TX_FRSIZE 2048 +#define FEC_ENET_TX_FRPPG (PAGE_SIZE / FEC_ENET_TX_FRSIZE) +#define TX_RING_SIZE 16 /* Must be power of two */ +#define TX_RING_MOD_MASK 15 /* for this to work */ + +/* Interrupt events/masks. +*/ +#define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */ +#define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */ +#define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */ +#define FEC_ENET_GRA ((uint)0x10000000) /* Graceful stop complete */ +#define FEC_ENET_TXF ((uint)0x08000000) /* Full frame transmitted */ +#define FEC_ENET_TXB ((uint)0x04000000) /* A buffer was transmitted */ +#define FEC_ENET_RXF ((uint)0x02000000) /* Full frame received */ +#define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */ +#define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */ +#define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */ + +/* The FEC stores dest/src/type, data, and checksum for receive packets. + */ +#define PKT_MAXBUF_SIZE 1518 +#define PKT_MINBUF_SIZE 64 +#define PKT_MAXBLR_SIZE 1520 + + +/* + * The 5270/5271/5280/5282 RX control register also contains maximum frame + * size bits. Other FEC hardware does not, so we need to take that into + * account when setting it. + */ +#if defined(CONFIG_M527x) || defined(CONFIG_M528x) +#define OPT_FRAME_SIZE (PKT_MAXBUF_SIZE << 16) +#else +#define OPT_FRAME_SIZE 0 +#endif + +/* The FEC buffer descriptors track the ring buffers. The rx_bd_base and + * tx_bd_base always point to the base of the buffer descriptors. The + * cur_rx and cur_tx point to the currently available buffer. + * The dirty_tx tracks the current buffer that is being sent by the + * controller. The cur_tx and dirty_tx are equal under both completely + * empty and completely full conditions. The empty/ready indicator in + * the buffer descriptor determines the actual condition. + */ +struct fec_enet_private { + /* Hardware registers of the FEC device */ + volatile fec_t *hwp; + + /* The saved address of a sent-in-place packet/buffer, for skfree(). */ + unsigned char *tx_bounce[TX_RING_SIZE]; + struct sk_buff* tx_skbuff[TX_RING_SIZE]; + ushort skb_cur; + ushort skb_dirty; + + /* CPM dual port RAM relative addresses. + */ + cbd_t *rx_bd_base; /* Address of Rx and Tx buffers. */ + cbd_t *tx_bd_base; + cbd_t *cur_rx, *cur_tx; /* The next free ring entry */ + cbd_t *dirty_tx; /* The ring entries to be free()ed. */ + struct net_device_stats stats; + uint tx_full; + spinlock_t lock; + + uint phy_id; + uint phy_id_done; + uint phy_status; + uint phy_speed; + phy_info_t *phy; + struct work_struct phy_task; + + uint sequence_done; + uint mii_phy_task_queued; + + uint phy_addr; + + int index; + int opened; + int link; + int old_link; + int full_duplex; + unsigned char mac_addr[ETH_ALEN]; +}; + +static int fec_enet_open(struct net_device *dev); +static int fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev); +static void fec_enet_mii(struct net_device *dev); +static irqreturn_t fec_enet_interrupt(int irq, void * dev_id, struct pt_regs * regs); +static void fec_enet_tx(struct net_device *dev); +static void fec_enet_rx(struct net_device *dev); +static int fec_enet_close(struct net_device *dev); +static struct net_device_stats *fec_enet_get_stats(struct net_device *dev); +static void set_multicast_list(struct net_device *dev); +static void fec_restart(struct net_device *dev, int duplex); +static void fec_stop(struct net_device *dev); +static void fec_set_mac_address(struct net_device *dev); + + +/* MII processing. We keep this as simple as possible. Requests are + * placed on the list (if there is room). When the request is finished + * by the MII, an optional function may be called. + */ +typedef struct mii_list { + uint mii_regval; + void (*mii_func)(uint val, struct net_device *dev); + struct mii_list *mii_next; +} mii_list_t; + +#define NMII 20 +mii_list_t mii_cmds[NMII]; +mii_list_t *mii_free; +mii_list_t *mii_head; +mii_list_t *mii_tail; + +static int mii_queue(struct net_device *dev, int request, + void (*func)(uint, struct net_device *)); + +/* Make MII read/write commands for the FEC. +*/ +#define mk_mii_read(REG) (0x60020000 | ((REG & 0x1f) << 18)) +#define mk_mii_write(REG, VAL) (0x50020000 | ((REG & 0x1f) << 18) | \ + (VAL & 0xffff)) +#define mk_mii_end 0 + +/* Transmitter timeout. +*/ +#define TX_TIMEOUT (2*HZ) + +/* Register definitions for the PHY. +*/ + +#define MII_REG_CR 0 /* Control Register */ +#define MII_REG_SR 1 /* Status Register */ +#define MII_REG_PHYIR1 2 /* PHY Identification Register 1 */ +#define MII_REG_PHYIR2 3 /* PHY Identification Register 2 */ +#define MII_REG_ANAR 4 /* A-N Advertisement Register */ +#define MII_REG_ANLPAR 5 /* A-N Link Partner Ability Register */ +#define MII_REG_ANER 6 /* A-N Expansion Register */ +#define MII_REG_ANNPTR 7 /* A-N Next Page Transmit Register */ +#define MII_REG_ANLPRNPR 8 /* A-N Link Partner Received Next Page Reg. */ + +/* values for phy_status */ + +#define PHY_CONF_ANE 0x0001 /* 1 auto-negotiation enabled */ +#define PHY_CONF_LOOP 0x0002 /* 1 loopback mode enabled */ +#define PHY_CONF_SPMASK 0x00f0 /* mask for speed */ +#define PHY_CONF_10HDX 0x0010 /* 10 Mbit half duplex supported */ +#define PHY_CONF_10FDX 0x0020 /* 10 Mbit full duplex supported */ +#define PHY_CONF_100HDX 0x0040 /* 100 Mbit half duplex supported */ +#define PHY_CONF_100FDX 0x0080 /* 100 Mbit full duplex supported */ + +#define PHY_STAT_LINK 0x0100 /* 1 up - 0 down */ +#define PHY_STAT_FAULT 0x0200 /* 1 remote fault */ +#define PHY_STAT_ANC 0x0400 /* 1 auto-negotiation complete */ +#define PHY_STAT_SPMASK 0xf000 /* mask for speed */ +#define PHY_STAT_10HDX 0x1000 /* 10 Mbit half duplex selected */ +#define PHY_STAT_10FDX 0x2000 /* 10 Mbit full duplex selected */ +#define PHY_STAT_100HDX 0x4000 /* 100 Mbit half duplex selected */ +#define PHY_STAT_100FDX 0x8000 /* 100 Mbit full duplex selected */ + + +static int +fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct fec_enet_private *fep; + volatile fec_t *fecp; + volatile cbd_t *bdp; + + fep = netdev_priv(dev); + fecp = (volatile fec_t*)dev->base_addr; + + if (!fep->link) { + /* Link is down or autonegotiation is in progress. */ + return 1; + } + + /* Fill in a Tx ring entry */ + bdp = fep->cur_tx; + +#ifndef final_version + if (bdp->cbd_sc & BD_ENET_TX_READY) { + /* Ooops. All transmit buffers are full. Bail out. + * This should not happen, since dev->tbusy should be set. + */ + printk("%s: tx queue full!.\n", dev->name); + return 1; + } +#endif + + /* Clear all of the status flags. + */ + bdp->cbd_sc &= ~BD_ENET_TX_STATS; + + /* Set buffer length and buffer pointer. + */ + bdp->cbd_bufaddr = __pa(skb->data); + bdp->cbd_datlen = skb->len; + + /* + * On some FEC implementations data must be aligned on + * 4-byte boundaries. Use bounce buffers to copy data + * and get it aligned. Ugh. + */ + if (bdp->cbd_bufaddr & 0x3) { + unsigned int index; + index = bdp - fep->tx_bd_base; + memcpy(fep->tx_bounce[index], (void *) bdp->cbd_bufaddr, bdp->cbd_datlen); + bdp->cbd_bufaddr = __pa(fep->tx_bounce[index]); + } + + /* Save skb pointer. + */ + fep->tx_skbuff[fep->skb_cur] = skb; + + fep->stats.tx_bytes += skb->len; + fep->skb_cur = (fep->skb_cur+1) & TX_RING_MOD_MASK; + + /* Push the data cache so the CPM does not get stale memory + * data. + */ + flush_dcache_range((unsigned long)skb->data, + (unsigned long)skb->data + skb->len); + + spin_lock_irq(&fep->lock); + + /* Send it on its way. Tell FEC its ready, interrupt when done, + * its the last BD of the frame, and to put the CRC on the end. + */ + + bdp->cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_INTR + | BD_ENET_TX_LAST | BD_ENET_TX_TC); + + dev->trans_start = jiffies; + + /* Trigger transmission start */ + fecp->fec_x_des_active = 0x01000000; + + /* If this was the last BD in the ring, start at the beginning again. + */ + if (bdp->cbd_sc & BD_ENET_TX_WRAP) { + bdp = fep->tx_bd_base; + } else { + bdp++; + } + + if (bdp == fep->dirty_tx) { + fep->tx_full = 1; + netif_stop_queue(dev); + } + + fep->cur_tx = (cbd_t *)bdp; + + spin_unlock_irq(&fep->lock); + + return 0; +} + +static void +fec_timeout(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + + printk("%s: transmit timed out.\n", dev->name); + fep->stats.tx_errors++; +#ifndef final_version + { + int i; + cbd_t *bdp; + + printk("Ring data dump: cur_tx %lx%s, dirty_tx %lx cur_rx: %lx\n", + (unsigned long)fep->cur_tx, fep->tx_full ? " (full)" : "", + (unsigned long)fep->dirty_tx, + (unsigned long)fep->cur_rx); + + bdp = fep->tx_bd_base; + printk(" tx: %u buffers\n", TX_RING_SIZE); + for (i = 0 ; i < TX_RING_SIZE; i++) { + printk(" %08x: %04x %04x %08x\n", + (uint) bdp, + bdp->cbd_sc, + bdp->cbd_datlen, + (int) bdp->cbd_bufaddr); + bdp++; + } + + bdp = fep->rx_bd_base; + printk(" rx: %lu buffers\n", (unsigned long) RX_RING_SIZE); + for (i = 0 ; i < RX_RING_SIZE; i++) { + printk(" %08x: %04x %04x %08x\n", + (uint) bdp, + bdp->cbd_sc, + bdp->cbd_datlen, + (int) bdp->cbd_bufaddr); + bdp++; + } + } +#endif + fec_restart(dev, 0); + netif_wake_queue(dev); +} + +/* The interrupt handler. + * This is called from the MPC core interrupt. + */ +static irqreturn_t +fec_enet_interrupt(int irq, void * dev_id, struct pt_regs * regs) +{ + struct net_device *dev = dev_id; + volatile fec_t *fecp; + uint int_events; + int handled = 0; + + fecp = (volatile fec_t*)dev->base_addr; + + /* Get the interrupt events that caused us to be here. + */ + while ((int_events = fecp->fec_ievent) != 0) { + fecp->fec_ievent = int_events; + + /* Handle receive event in its own function. + */ + if (int_events & FEC_ENET_RXF) { + handled = 1; + fec_enet_rx(dev); + } + + /* Transmit OK, or non-fatal error. Update the buffer + descriptors. FEC handles all errors, we just discover + them as part of the transmit process. + */ + if (int_events & FEC_ENET_TXF) { + handled = 1; + fec_enet_tx(dev); + } + + if (int_events & FEC_ENET_MII) { + handled = 1; + fec_enet_mii(dev); + } + + } + return IRQ_RETVAL(handled); +} + + +static void +fec_enet_tx(struct net_device *dev) +{ + struct fec_enet_private *fep; + volatile cbd_t *bdp; + struct sk_buff *skb; + + fep = netdev_priv(dev); + spin_lock(&fep->lock); + bdp = fep->dirty_tx; + + while ((bdp->cbd_sc&BD_ENET_TX_READY) == 0) { + if (bdp == fep->cur_tx && fep->tx_full == 0) break; + + skb = fep->tx_skbuff[fep->skb_dirty]; + /* Check for errors. */ + if (bdp->cbd_sc & (BD_ENET_TX_HB | BD_ENET_TX_LC | + BD_ENET_TX_RL | BD_ENET_TX_UN | + BD_ENET_TX_CSL)) { + fep->stats.tx_errors++; + if (bdp->cbd_sc & BD_ENET_TX_HB) /* No heartbeat */ + fep->stats.tx_heartbeat_errors++; + if (bdp->cbd_sc & BD_ENET_TX_LC) /* Late collision */ + fep->stats.tx_window_errors++; + if (bdp->cbd_sc & BD_ENET_TX_RL) /* Retrans limit */ + fep->stats.tx_aborted_errors++; + if (bdp->cbd_sc & BD_ENET_TX_UN) /* Underrun */ + fep->stats.tx_fifo_errors++; + if (bdp->cbd_sc & BD_ENET_TX_CSL) /* Carrier lost */ + fep->stats.tx_carrier_errors++; + } else { + fep->stats.tx_packets++; + } + +#ifndef final_version + if (bdp->cbd_sc & BD_ENET_TX_READY) + printk("HEY! Enet xmit interrupt and TX_READY.\n"); +#endif + /* Deferred means some collisions occurred during transmit, + * but we eventually sent the packet OK. + */ + if (bdp->cbd_sc & BD_ENET_TX_DEF) + fep->stats.collisions++; + + /* Free the sk buffer associated with this last transmit. + */ + dev_kfree_skb_any(skb); + fep->tx_skbuff[fep->skb_dirty] = NULL; + fep->skb_dirty = (fep->skb_dirty + 1) & TX_RING_MOD_MASK; + + /* Update pointer to next buffer descriptor to be transmitted. + */ + if (bdp->cbd_sc & BD_ENET_TX_WRAP) + bdp = fep->tx_bd_base; + else + bdp++; + + /* Since we have freed up a buffer, the ring is no longer + * full. + */ + if (fep->tx_full) { + fep->tx_full = 0; + if (netif_queue_stopped(dev)) + netif_wake_queue(dev); + } + } + fep->dirty_tx = (cbd_t *)bdp; + spin_unlock(&fep->lock); +} + + +/* During a receive, the cur_rx points to the current incoming buffer. + * When we update through the ring, if the next incoming buffer has + * not been given to the system, we just set the empty indicator, + * effectively tossing the packet. + */ +static void +fec_enet_rx(struct net_device *dev) +{ + struct fec_enet_private *fep; + volatile fec_t *fecp; + volatile cbd_t *bdp; + struct sk_buff *skb; + ushort pkt_len; + __u8 *data; + + fep = netdev_priv(dev); + fecp = (volatile fec_t*)dev->base_addr; + + /* First, grab all of the stats for the incoming packet. + * These get messed up if we get called due to a busy condition. + */ + bdp = fep->cur_rx; + +while (!(bdp->cbd_sc & BD_ENET_RX_EMPTY)) { + +#ifndef final_version + /* Since we have allocated space to hold a complete frame, + * the last indicator should be set. + */ + if ((bdp->cbd_sc & BD_ENET_RX_LAST) == 0) + printk("FEC ENET: rcv is not +last\n"); +#endif + + if (!fep->opened) + goto rx_processing_done; + + /* Check for errors. */ + if (bdp->cbd_sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO | + BD_ENET_RX_CR | BD_ENET_RX_OV)) { + fep->stats.rx_errors++; + if (bdp->cbd_sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) { + /* Frame too long or too short. */ + fep->stats.rx_length_errors++; + } + if (bdp->cbd_sc & BD_ENET_RX_NO) /* Frame alignment */ + fep->stats.rx_frame_errors++; + if (bdp->cbd_sc & BD_ENET_RX_CR) /* CRC Error */ + fep->stats.rx_crc_errors++; + if (bdp->cbd_sc & BD_ENET_RX_OV) /* FIFO overrun */ + fep->stats.rx_crc_errors++; + } + + /* Report late collisions as a frame error. + * On this error, the BD is closed, but we don't know what we + * have in the buffer. So, just drop this frame on the floor. + */ + if (bdp->cbd_sc & BD_ENET_RX_CL) { + fep->stats.rx_errors++; + fep->stats.rx_frame_errors++; + goto rx_processing_done; + } + + /* Process the incoming frame. + */ + fep->stats.rx_packets++; + pkt_len = bdp->cbd_datlen; + fep->stats.rx_bytes += pkt_len; + data = (__u8*)__va(bdp->cbd_bufaddr); + + /* This does 16 byte alignment, exactly what we need. + * The packet length includes FCS, but we don't want to + * include that when passing upstream as it messes up + * bridging applications. + */ + skb = dev_alloc_skb(pkt_len-4); + + if (skb == NULL) { + printk("%s: Memory squeeze, dropping packet.\n", dev->name); + fep->stats.rx_dropped++; + } else { + skb->dev = dev; + skb_put(skb,pkt_len-4); /* Make room */ + eth_copy_and_sum(skb, + (unsigned char *)__va(bdp->cbd_bufaddr), + pkt_len-4, 0); + skb->protocol=eth_type_trans(skb,dev); + netif_rx(skb); + } + rx_processing_done: + + /* Clear the status flags for this buffer. + */ + bdp->cbd_sc &= ~BD_ENET_RX_STATS; + + /* Mark the buffer empty. + */ + bdp->cbd_sc |= BD_ENET_RX_EMPTY; + + /* Update BD pointer to next entry. + */ + if (bdp->cbd_sc & BD_ENET_RX_WRAP) + bdp = fep->rx_bd_base; + else + bdp++; + +#if 1 + /* Doing this here will keep the FEC running while we process + * incoming frames. On a heavily loaded network, we should be + * able to keep up at the expense of system resources. + */ + fecp->fec_r_des_active = 0x01000000; +#endif + } /* while (!(bdp->cbd_sc & BD_ENET_RX_EMPTY)) */ + fep->cur_rx = (cbd_t *)bdp; + +#if 0 + /* Doing this here will allow us to process all frames in the + * ring before the FEC is allowed to put more there. On a heavily + * loaded network, some frames may be lost. Unfortunately, this + * increases the interrupt overhead since we can potentially work + * our way back to the interrupt return only to come right back + * here. + */ + fecp->fec_r_des_active = 0x01000000; +#endif +} + + +static void +fec_enet_mii(struct net_device *dev) +{ + struct fec_enet_private *fep; + volatile fec_t *ep; + mii_list_t *mip; + uint mii_reg; + + fep = netdev_priv(dev); + ep = fep->hwp; + mii_reg = ep->fec_mii_data; + + if ((mip = mii_head) == NULL) { + printk("MII and no head!\n"); + return; + } + + if (mip->mii_func != NULL) + (*(mip->mii_func))(mii_reg, dev); + + mii_head = mip->mii_next; + mip->mii_next = mii_free; + mii_free = mip; + + if ((mip = mii_head) != NULL) + ep->fec_mii_data = mip->mii_regval; +} + +static int +mii_queue(struct net_device *dev, int regval, void (*func)(uint, struct net_device *)) +{ + struct fec_enet_private *fep; + unsigned long flags; + mii_list_t *mip; + int retval; + + /* Add PHY address to register command. + */ + fep = netdev_priv(dev); + regval |= fep->phy_addr << 23; + + retval = 0; + + save_flags(flags); + cli(); + + if ((mip = mii_free) != NULL) { + mii_free = mip->mii_next; + mip->mii_regval = regval; + mip->mii_func = func; + mip->mii_next = NULL; + if (mii_head) { + mii_tail->mii_next = mip; + mii_tail = mip; + } + else { + mii_head = mii_tail = mip; + fep->hwp->fec_mii_data = regval; + } + } + else { + retval = 1; + } + + restore_flags(flags); + + return(retval); +} + +static void mii_do_cmd(struct net_device *dev, const phy_cmd_t *c) +{ + int k; + + if(!c) + return; + + for(k = 0; (c+k)->mii_data != mk_mii_end; k++) { + mii_queue(dev, (c+k)->mii_data, (c+k)->funct); + } +} + +static void mii_parse_sr(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile uint *s = &(fep->phy_status); + + *s &= ~(PHY_STAT_LINK | PHY_STAT_FAULT | PHY_STAT_ANC); + + if (mii_reg & 0x0004) + *s |= PHY_STAT_LINK; + if (mii_reg & 0x0010) + *s |= PHY_STAT_FAULT; + if (mii_reg & 0x0020) + *s |= PHY_STAT_ANC; +} + +static void mii_parse_cr(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile uint *s = &(fep->phy_status); + + *s &= ~(PHY_CONF_ANE | PHY_CONF_LOOP); + + if (mii_reg & 0x1000) + *s |= PHY_CONF_ANE; + if (mii_reg & 0x4000) + *s |= PHY_CONF_LOOP; +} + +static void mii_parse_anar(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile uint *s = &(fep->phy_status); + + *s &= ~(PHY_CONF_SPMASK); + + if (mii_reg & 0x0020) + *s |= PHY_CONF_10HDX; + if (mii_reg & 0x0040) + *s |= PHY_CONF_10FDX; + if (mii_reg & 0x0080) + *s |= PHY_CONF_100HDX; + if (mii_reg & 0x00100) + *s |= PHY_CONF_100FDX; +} + +/* ------------------------------------------------------------------------- */ +/* The Level one LXT970 is used by many boards */ + +#define MII_LXT970_MIRROR 16 /* Mirror register */ +#define MII_LXT970_IER 17 /* Interrupt Enable Register */ +#define MII_LXT970_ISR 18 /* Interrupt Status Register */ +#define MII_LXT970_CONFIG 19 /* Configuration Register */ +#define MII_LXT970_CSR 20 /* Chip Status Register */ + +static void mii_parse_lxt970_csr(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile uint *s = &(fep->phy_status); + + *s &= ~(PHY_STAT_SPMASK); + + if (mii_reg & 0x0800) { + if (mii_reg & 0x1000) + *s |= PHY_STAT_100FDX; + else + *s |= PHY_STAT_100HDX; + } else { + if (mii_reg & 0x1000) + *s |= PHY_STAT_10FDX; + else + *s |= PHY_STAT_10HDX; + } +} + +static phy_info_t phy_info_lxt970 = { + 0x07810000, + "LXT970", + + (const phy_cmd_t []) { /* config */ + { mk_mii_read(MII_REG_CR), mii_parse_cr }, + { mk_mii_read(MII_REG_ANAR), mii_parse_anar }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* startup - enable interrupts */ + { mk_mii_write(MII_LXT970_IER, 0x0002), NULL }, + { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */ + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* ack_int */ + /* read SR and ISR to acknowledge */ + { mk_mii_read(MII_REG_SR), mii_parse_sr }, + { mk_mii_read(MII_LXT970_ISR), NULL }, + + /* find out the current status */ + { mk_mii_read(MII_LXT970_CSR), mii_parse_lxt970_csr }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* shutdown - disable interrupts */ + { mk_mii_write(MII_LXT970_IER, 0x0000), NULL }, + { mk_mii_end, } + }, +}; + +/* ------------------------------------------------------------------------- */ +/* The Level one LXT971 is used on some of my custom boards */ + +/* register definitions for the 971 */ + +#define MII_LXT971_PCR 16 /* Port Control Register */ +#define MII_LXT971_SR2 17 /* Status Register 2 */ +#define MII_LXT971_IER 18 /* Interrupt Enable Register */ +#define MII_LXT971_ISR 19 /* Interrupt Status Register */ +#define MII_LXT971_LCR 20 /* LED Control Register */ +#define MII_LXT971_TCR 30 /* Transmit Control Register */ + +/* + * I had some nice ideas of running the MDIO faster... + * The 971 should support 8MHz and I tried it, but things acted really + * weird, so 2.5 MHz ought to be enough for anyone... + */ + +static void mii_parse_lxt971_sr2(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile uint *s = &(fep->phy_status); + + *s &= ~(PHY_STAT_SPMASK | PHY_STAT_LINK | PHY_STAT_ANC); + + if (mii_reg & 0x0400) { + fep->link = 1; + *s |= PHY_STAT_LINK; + } else { + fep->link = 0; + } + if (mii_reg & 0x0080) + *s |= PHY_STAT_ANC; + if (mii_reg & 0x4000) { + if (mii_reg & 0x0200) + *s |= PHY_STAT_100FDX; + else + *s |= PHY_STAT_100HDX; + } else { + if (mii_reg & 0x0200) + *s |= PHY_STAT_10FDX; + else + *s |= PHY_STAT_10HDX; + } + if (mii_reg & 0x0008) + *s |= PHY_STAT_FAULT; +} + +static phy_info_t phy_info_lxt971 = { + 0x0001378e, + "LXT971", + + (const phy_cmd_t []) { /* config */ + /* limit to 10MBit because my protorype board + * doesn't work with 100. */ + { mk_mii_read(MII_REG_CR), mii_parse_cr }, + { mk_mii_read(MII_REG_ANAR), mii_parse_anar }, + { mk_mii_read(MII_LXT971_SR2), mii_parse_lxt971_sr2 }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* startup - enable interrupts */ + { mk_mii_write(MII_LXT971_IER, 0x00f2), NULL }, + { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */ + { mk_mii_write(MII_LXT971_LCR, 0xd422), NULL }, /* LED config */ + /* Somehow does the 971 tell me that the link is down + * the first read after power-up. + * read here to get a valid value in ack_int */ + { mk_mii_read(MII_REG_SR), mii_parse_sr }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* ack_int */ + /* find out the current status */ + { mk_mii_read(MII_REG_SR), mii_parse_sr }, + { mk_mii_read(MII_LXT971_SR2), mii_parse_lxt971_sr2 }, + /* we only need to read ISR to acknowledge */ + { mk_mii_read(MII_LXT971_ISR), NULL }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* shutdown - disable interrupts */ + { mk_mii_write(MII_LXT971_IER, 0x0000), NULL }, + { mk_mii_end, } + }, +}; + +/* ------------------------------------------------------------------------- */ +/* The Quality Semiconductor QS6612 is used on the RPX CLLF */ + +/* register definitions */ + +#define MII_QS6612_MCR 17 /* Mode Control Register */ +#define MII_QS6612_FTR 27 /* Factory Test Register */ +#define MII_QS6612_MCO 28 /* Misc. Control Register */ +#define MII_QS6612_ISR 29 /* Interrupt Source Register */ +#define MII_QS6612_IMR 30 /* Interrupt Mask Register */ +#define MII_QS6612_PCR 31 /* 100BaseTx PHY Control Reg. */ + +static void mii_parse_qs6612_pcr(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile uint *s = &(fep->phy_status); + + *s &= ~(PHY_STAT_SPMASK); + + switch((mii_reg >> 2) & 7) { + case 1: *s |= PHY_STAT_10HDX; break; + case 2: *s |= PHY_STAT_100HDX; break; + case 5: *s |= PHY_STAT_10FDX; break; + case 6: *s |= PHY_STAT_100FDX; break; + } +} + +static phy_info_t phy_info_qs6612 = { + 0x00181440, + "QS6612", + + (const phy_cmd_t []) { /* config */ + /* The PHY powers up isolated on the RPX, + * so send a command to allow operation. + */ + { mk_mii_write(MII_QS6612_PCR, 0x0dc0), NULL }, + + /* parse cr and anar to get some info */ + { mk_mii_read(MII_REG_CR), mii_parse_cr }, + { mk_mii_read(MII_REG_ANAR), mii_parse_anar }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* startup - enable interrupts */ + { mk_mii_write(MII_QS6612_IMR, 0x003a), NULL }, + { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */ + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* ack_int */ + /* we need to read ISR, SR and ANER to acknowledge */ + { mk_mii_read(MII_QS6612_ISR), NULL }, + { mk_mii_read(MII_REG_SR), mii_parse_sr }, + { mk_mii_read(MII_REG_ANER), NULL }, + + /* read pcr to get info */ + { mk_mii_read(MII_QS6612_PCR), mii_parse_qs6612_pcr }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* shutdown - disable interrupts */ + { mk_mii_write(MII_QS6612_IMR, 0x0000), NULL }, + { mk_mii_end, } + }, +}; + +/* ------------------------------------------------------------------------- */ +/* AMD AM79C874 phy */ + +/* register definitions for the 874 */ + +#define MII_AM79C874_MFR 16 /* Miscellaneous Feature Register */ +#define MII_AM79C874_ICSR 17 /* Interrupt/Status Register */ +#define MII_AM79C874_DR 18 /* Diagnostic Register */ +#define MII_AM79C874_PMLR 19 /* Power and Loopback Register */ +#define MII_AM79C874_MCR 21 /* ModeControl Register */ +#define MII_AM79C874_DC 23 /* Disconnect Counter */ +#define MII_AM79C874_REC 24 /* Recieve Error Counter */ + +static void mii_parse_am79c874_dr(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile uint *s = &(fep->phy_status); + + *s &= ~(PHY_STAT_SPMASK | PHY_STAT_ANC); + + if (mii_reg & 0x0080) + *s |= PHY_STAT_ANC; + if (mii_reg & 0x0400) + *s |= ((mii_reg & 0x0800) ? PHY_STAT_100FDX : PHY_STAT_100HDX); + else + *s |= ((mii_reg & 0x0800) ? PHY_STAT_10FDX : PHY_STAT_10HDX); +} + +static phy_info_t phy_info_am79c874 = { + 0x00022561, + "AM79C874", + + (const phy_cmd_t []) { /* config */ + /* limit to 10MBit because my protorype board + * doesn't work with 100. */ + { mk_mii_read(MII_REG_CR), mii_parse_cr }, + { mk_mii_read(MII_REG_ANAR), mii_parse_anar }, + { mk_mii_read(MII_AM79C874_DR), mii_parse_am79c874_dr }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* startup - enable interrupts */ + { mk_mii_write(MII_AM79C874_ICSR, 0xff00), NULL }, + { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */ + { mk_mii_read(MII_REG_SR), mii_parse_sr }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* ack_int */ + /* find out the current status */ + { mk_mii_read(MII_REG_SR), mii_parse_sr }, + { mk_mii_read(MII_AM79C874_DR), mii_parse_am79c874_dr }, + /* we only need to read ISR to acknowledge */ + { mk_mii_read(MII_AM79C874_ICSR), NULL }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* shutdown - disable interrupts */ + { mk_mii_write(MII_AM79C874_ICSR, 0x0000), NULL }, + { mk_mii_end, } + }, +}; + +/* ------------------------------------------------------------------------- */ +/* Kendin KS8721BL phy */ + +/* register definitions for the 8721 */ + +#define MII_KS8721BL_RXERCR 21 +#define MII_KS8721BL_ICSR 22 +#define MII_KS8721BL_PHYCR 31 + +static phy_info_t phy_info_ks8721bl = { + 0x00022161, + "KS8721BL", + + (const phy_cmd_t []) { /* config */ + { mk_mii_read(MII_REG_CR), mii_parse_cr }, + { mk_mii_read(MII_REG_ANAR), mii_parse_anar }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* startup */ + { mk_mii_write(MII_KS8721BL_ICSR, 0xff00), NULL }, + { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */ + { mk_mii_read(MII_REG_SR), mii_parse_sr }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* ack_int */ + /* find out the current status */ + { mk_mii_read(MII_REG_SR), mii_parse_sr }, + /* we only need to read ISR to acknowledge */ + { mk_mii_read(MII_KS8721BL_ICSR), NULL }, + { mk_mii_end, } + }, + (const phy_cmd_t []) { /* shutdown */ + { mk_mii_write(MII_KS8721BL_ICSR, 0x0000), NULL }, + { mk_mii_end, } + }, +}; + +/* ------------------------------------------------------------------------- */ + +static phy_info_t *phy_info[] = { + &phy_info_lxt970, + &phy_info_lxt971, + &phy_info_qs6612, + &phy_info_am79c874, + &phy_info_ks8721bl, + NULL +}; + +/* ------------------------------------------------------------------------- */ + +#ifdef CONFIG_RPXCLASSIC +static void +mii_link_interrupt(void *dev_id); +#else +static irqreturn_t +mii_link_interrupt(int irq, void * dev_id, struct pt_regs * regs); +#endif + +#if defined(CONFIG_M5272) + +/* + * Code specific to Coldfire 5272 setup. + */ +static void __inline__ fec_request_intrs(struct net_device *dev) +{ + volatile unsigned long *icrp; + + /* Setup interrupt handlers. */ + if (request_irq(86, fec_enet_interrupt, 0, "fec(RX)", dev) != 0) + printk("FEC: Could not allocate FEC(RC) IRQ(86)!\n"); + if (request_irq(87, fec_enet_interrupt, 0, "fec(TX)", dev) != 0) + printk("FEC: Could not allocate FEC(RC) IRQ(87)!\n"); + if (request_irq(88, fec_enet_interrupt, 0, "fec(OTHER)", dev) != 0) + printk("FEC: Could not allocate FEC(OTHER) IRQ(88)!\n"); + if (request_irq(66, mii_link_interrupt, 0, "fec(MII)", dev) != 0) + printk("FEC: Could not allocate MII IRQ(66)!\n"); + + /* Unmask interrupt at ColdFire 5272 SIM */ + icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR3); + *icrp = 0x00000ddd; + icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1); + *icrp = (*icrp & 0x70777777) | 0x0d000000; +} + +static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep) +{ + volatile fec_t *fecp; + + fecp = fep->hwp; + fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04; + fecp->fec_x_cntrl = 0x00; + + /* + * Set MII speed to 2.5 MHz + * See 5272 manual section 11.5.8: MSCR + */ + fep->phy_speed = ((((MCF_CLK / 4) / (2500000 / 10)) + 5) / 10) * 2; + fecp->fec_mii_speed = fep->phy_speed; + + fec_restart(dev, 0); +} + +static void __inline__ fec_get_mac(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile fec_t *fecp; + unsigned char *iap, tmpaddr[6]; + int i; + + fecp = fep->hwp; + + if (fec_flashmac) { + /* + * Get MAC address from FLASH. + * If it is all 1's or 0's, use the default. + */ + iap = fec_flashmac; + if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) && + (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0)) + iap = fec_mac_default; + if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) && + (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff)) + iap = fec_mac_default; + } else { + *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low; + *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16); + iap = &tmpaddr[0]; + } + + for (i=0; i<ETH_ALEN; i++) + dev->dev_addr[i] = fep->mac_addr[i] = *iap++; + + /* Adjust MAC if using default MAC address */ + if (iap == fec_mac_default) { + dev->dev_addr[ETH_ALEN-1] = fep->mac_addr[ETH_ALEN-1] = + iap[ETH_ALEN-1] + fep->index; + } +} + +static void __inline__ fec_enable_phy_intr(void) +{ +} + +static void __inline__ fec_disable_phy_intr(void) +{ + volatile unsigned long *icrp; + icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1); + *icrp = (*icrp & 0x70777777) | 0x08000000; +} + +static void __inline__ fec_phy_ack_intr(void) +{ + volatile unsigned long *icrp; + /* Acknowledge the interrupt */ + icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1); + *icrp = (*icrp & 0x77777777) | 0x08000000; +} + +static void __inline__ fec_localhw_setup(void) +{ +} + +/* + * Do not need to make region uncached on 5272. + */ +static void __inline__ fec_uncache(unsigned long addr) +{ +} + +/* ------------------------------------------------------------------------- */ + +#elif defined(CONFIG_M527x) || defined(CONFIG_M528x) + +/* + * Code specific to Coldfire 5270/5271/5274/5275 and 5280/5282 setups. + */ +static void __inline__ fec_request_intrs(struct net_device *dev) +{ + struct fec_enet_private *fep; + int b; + + fep = netdev_priv(dev); + b = (fep->index) ? 128 : 64; + + /* Setup interrupt handlers. */ + if (request_irq(b+23, fec_enet_interrupt, 0, "fec(TXF)", dev) != 0) + printk("FEC: Could not allocate FEC(TXF) IRQ(%d+23)!\n", b); + if (request_irq(b+24, fec_enet_interrupt, 0, "fec(TXB)", dev) != 0) + printk("FEC: Could not allocate FEC(TXB) IRQ(%d+24)!\n", b); + if (request_irq(b+25, fec_enet_interrupt, 0, "fec(TXFIFO)", dev) != 0) + printk("FEC: Could not allocate FEC(TXFIFO) IRQ(%d+25)!\n", b); + if (request_irq(b+26, fec_enet_interrupt, 0, "fec(TXCR)", dev) != 0) + printk("FEC: Could not allocate FEC(TXCR) IRQ(%d+26)!\n", b); + + if (request_irq(b+27, fec_enet_interrupt, 0, "fec(RXF)", dev) != 0) + printk("FEC: Could not allocate FEC(RXF) IRQ(%d+27)!\n", b); + if (request_irq(b+28, fec_enet_interrupt, 0, "fec(RXB)", dev) != 0) + printk("FEC: Could not allocate FEC(RXB) IRQ(%d+28)!\n", b); + + if (request_irq(b+29, fec_enet_interrupt, 0, "fec(MII)", dev) != 0) + printk("FEC: Could not allocate FEC(MII) IRQ(%d+29)!\n", b); + if (request_irq(b+30, fec_enet_interrupt, 0, "fec(LC)", dev) != 0) + printk("FEC: Could not allocate FEC(LC) IRQ(%d+30)!\n", b); + if (request_irq(b+31, fec_enet_interrupt, 0, "fec(HBERR)", dev) != 0) + printk("FEC: Could not allocate FEC(HBERR) IRQ(%d+31)!\n", b); + if (request_irq(b+32, fec_enet_interrupt, 0, "fec(GRA)", dev) != 0) + printk("FEC: Could not allocate FEC(GRA) IRQ(%d+32)!\n", b); + if (request_irq(b+33, fec_enet_interrupt, 0, "fec(EBERR)", dev) != 0) + printk("FEC: Could not allocate FEC(EBERR) IRQ(%d+33)!\n", b); + if (request_irq(b+34, fec_enet_interrupt, 0, "fec(BABT)", dev) != 0) + printk("FEC: Could not allocate FEC(BABT) IRQ(%d+34)!\n", b); + if (request_irq(b+35, fec_enet_interrupt, 0, "fec(BABR)", dev) != 0) + printk("FEC: Could not allocate FEC(BABR) IRQ(%d+35)!\n", b); + + /* Unmask interrupts at ColdFire 5280/5282 interrupt controller */ + { + volatile unsigned char *icrp; + volatile unsigned long *imrp; + int i; + + b = (fep->index) ? MCFICM_INTC1 : MCFICM_INTC0; + icrp = (volatile unsigned char *) (MCF_IPSBAR + b + + MCFINTC_ICR0); + for (i = 23; (i < 36); i++) + icrp[i] = 0x23; + + imrp = (volatile unsigned long *) (MCF_IPSBAR + b + + MCFINTC_IMRH); + *imrp &= ~0x0000000f; + imrp = (volatile unsigned long *) (MCF_IPSBAR + b + + MCFINTC_IMRL); + *imrp &= ~0xff800001; + } + +#if defined(CONFIG_M528x) + /* Set up gpio outputs for MII lines */ + { + volatile unsigned short *gpio_paspar; + + gpio_paspar = (volatile unsigned short *) (MCF_IPSBAR + + 0x100056); + *gpio_paspar = 0x0f00; + } +#endif +} + +static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep) +{ + volatile fec_t *fecp; + + fecp = fep->hwp; + fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04; + fecp->fec_x_cntrl = 0x00; + + /* + * Set MII speed to 2.5 MHz + * See 5282 manual section 17.5.4.7: MSCR + */ + fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2; + fecp->fec_mii_speed = fep->phy_speed; + + fec_restart(dev, 0); +} + +static void __inline__ fec_get_mac(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile fec_t *fecp; + unsigned char *iap, tmpaddr[6]; + int i; + + fecp = fep->hwp; + + if (fec_flashmac) { + /* + * Get MAC address from FLASH. + * If it is all 1's or 0's, use the default. + */ + iap = fec_flashmac; + if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) && + (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0)) + iap = fec_mac_default; + if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) && + (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff)) + iap = fec_mac_default; + } else { + *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low; + *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16); + iap = &tmpaddr[0]; + } + + for (i=0; i<ETH_ALEN; i++) + dev->dev_addr[i] = fep->mac_addr[i] = *iap++; + + /* Adjust MAC if using default MAC address */ + if (iap == fec_mac_default) { + dev->dev_addr[ETH_ALEN-1] = fep->mac_addr[ETH_ALEN-1] = + iap[ETH_ALEN-1] + fep->index; + } +} + +static void __inline__ fec_enable_phy_intr(void) +{ +} + +static void __inline__ fec_disable_phy_intr(void) +{ +} + +static void __inline__ fec_phy_ack_intr(void) +{ +} + +static void __inline__ fec_localhw_setup(void) +{ +} + +/* + * Do not need to make region uncached on 5272. + */ +static void __inline__ fec_uncache(unsigned long addr) +{ +} + +/* ------------------------------------------------------------------------- */ + +#else + +/* + * Code sepcific to the MPC860T setup. + */ +static void __inline__ fec_request_intrs(struct net_device *dev) +{ + volatile immap_t *immap; + + immap = (immap_t *)IMAP_ADDR; /* pointer to internal registers */ + + if (request_8xxirq(FEC_INTERRUPT, fec_enet_interrupt, 0, "fec", dev) != 0) + panic("Could not allocate FEC IRQ!"); + +#ifdef CONFIG_RPXCLASSIC + /* Make Port C, bit 15 an input that causes interrupts. + */ + immap->im_ioport.iop_pcpar &= ~0x0001; + immap->im_ioport.iop_pcdir &= ~0x0001; + immap->im_ioport.iop_pcso &= ~0x0001; + immap->im_ioport.iop_pcint |= 0x0001; + cpm_install_handler(CPMVEC_PIO_PC15, mii_link_interrupt, dev); + + /* Make LEDS reflect Link status. + */ + *((uint *) RPX_CSR_ADDR) &= ~BCSR2_FETHLEDMODE; +#endif +#ifdef CONFIG_FADS + if (request_8xxirq(SIU_IRQ2, mii_link_interrupt, 0, "mii", dev) != 0) + panic("Could not allocate MII IRQ!"); +#endif +} + +static void __inline__ fec_get_mac(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + unsigned char *iap, tmpaddr[6]; + bd_t *bd; + int i; + + iap = bd->bi_enetaddr; + bd = (bd_t *)__res; + +#ifdef CONFIG_RPXCLASSIC + /* The Embedded Planet boards have only one MAC address in + * the EEPROM, but can have two Ethernet ports. For the + * FEC port, we create another address by setting one of + * the address bits above something that would have (up to + * now) been allocated. + */ + for (i=0; i<6; i++) + tmpaddr[i] = *iap++; + tmpaddr[3] |= 0x80; + iap = tmpaddr; +#endif + + for (i=0; i<6; i++) + dev->dev_addr[i] = fep->mac_addr[i] = *iap++; +} + +static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep) +{ + extern uint _get_IMMR(void); + volatile immap_t *immap; + volatile fec_t *fecp; + + fecp = fep->hwp; + immap = (immap_t *)IMAP_ADDR; /* pointer to internal registers */ + + /* Configure all of port D for MII. + */ + immap->im_ioport.iop_pdpar = 0x1fff; + + /* Bits moved from Rev. D onward. + */ + if ((_get_IMMR() & 0xffff) < 0x0501) + immap->im_ioport.iop_pddir = 0x1c58; /* Pre rev. D */ + else + immap->im_ioport.iop_pddir = 0x1fff; /* Rev. D and later */ + + /* Set MII speed to 2.5 MHz + */ + fecp->fec_mii_speed = fep->phy_speed = + ((bd->bi_busfreq * 1000000) / 2500000) & 0x7e; +} + +static void __inline__ fec_enable_phy_intr(void) +{ + volatile fec_t *fecp; + + fecp = fep->hwp; + + /* Enable MII command finished interrupt + */ + fecp->fec_ivec = (FEC_INTERRUPT/2) << 29; +} + +static void __inline__ fec_disable_phy_intr(void) +{ +} + +static void __inline__ fec_phy_ack_intr(void) +{ +} + +static void __inline__ fec_localhw_setup(void) +{ + volatile fec_t *fecp; + + fecp = fep->hwp; + fecp->fec_r_hash = PKT_MAXBUF_SIZE; + /* Enable big endian and don't care about SDMA FC. + */ + fecp->fec_fun_code = 0x78000000; +} + +static void __inline__ fec_uncache(unsigned long addr) +{ + pte_t *pte; + pte = va_to_pte(mem_addr); + pte_val(*pte) |= _PAGE_NO_CACHE; + flush_tlb_page(init_mm.mmap, mem_addr); +} + +#endif + +/* ------------------------------------------------------------------------- */ + +static void mii_display_status(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile uint *s = &(fep->phy_status); + + if (!fep->link && !fep->old_link) { + /* Link is still down - don't print anything */ + return; + } + + printk("%s: status: ", dev->name); + + if (!fep->link) { + printk("link down"); + } else { + printk("link up"); + + switch(*s & PHY_STAT_SPMASK) { + case PHY_STAT_100FDX: printk(", 100MBit Full Duplex"); break; + case PHY_STAT_100HDX: printk(", 100MBit Half Duplex"); break; + case PHY_STAT_10FDX: printk(", 10MBit Full Duplex"); break; + case PHY_STAT_10HDX: printk(", 10MBit Half Duplex"); break; + default: + printk(", Unknown speed/duplex"); + } + + if (*s & PHY_STAT_ANC) + printk(", auto-negotiation complete"); + } + + if (*s & PHY_STAT_FAULT) + printk(", remote fault"); + + printk(".\n"); +} + +static void mii_display_config(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + volatile uint *s = &(fep->phy_status); + + /* + ** When we get here, phy_task is already removed from + ** the workqueue. It is thus safe to allow to reuse it. + */ + fep->mii_phy_task_queued = 0; + printk("%s: config: auto-negotiation ", dev->name); + + if (*s & PHY_CONF_ANE) + printk("on"); + else + printk("off"); + + if (*s & PHY_CONF_100FDX) + printk(", 100FDX"); + if (*s & PHY_CONF_100HDX) + printk(", 100HDX"); + if (*s & PHY_CONF_10FDX) + printk(", 10FDX"); + if (*s & PHY_CONF_10HDX) + printk(", 10HDX"); + if (!(*s & PHY_CONF_SPMASK)) + printk(", No speed/duplex selected?"); + + if (*s & PHY_CONF_LOOP) + printk(", loopback enabled"); + + printk(".\n"); + + fep->sequence_done = 1; +} + +static void mii_relink(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + int duplex; + + /* + ** When we get here, phy_task is already removed from + ** the workqueue. It is thus safe to allow to reuse it. + */ + fep->mii_phy_task_queued = 0; + fep->link = (fep->phy_status & PHY_STAT_LINK) ? 1 : 0; + mii_display_status(dev); + fep->old_link = fep->link; + + if (fep->link) { + duplex = 0; + if (fep->phy_status + & (PHY_STAT_100FDX | PHY_STAT_10FDX)) + duplex = 1; + fec_restart(dev, duplex); + } + else + fec_stop(dev); + +#if 0 + enable_irq(fep->mii_irq); +#endif + +} + +/* mii_queue_relink is called in interrupt context from mii_link_interrupt */ +static void mii_queue_relink(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + + /* + ** We cannot queue phy_task twice in the workqueue. It + ** would cause an endless loop in the workqueue. + ** Fortunately, if the last mii_relink entry has not yet been + ** executed now, it will do the job for the current interrupt, + ** which is just what we want. + */ + if (fep->mii_phy_task_queued) + return; + + fep->mii_phy_task_queued = 1; + INIT_WORK(&fep->phy_task, (void*)mii_relink, dev); + schedule_work(&fep->phy_task); +} + +/* mii_queue_config is called in user context from fec_enet_open */ +static void mii_queue_config(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + + if (fep->mii_phy_task_queued) + return; + + fep->mii_phy_task_queued = 1; + INIT_WORK(&fep->phy_task, (void*)mii_display_config, dev); + schedule_work(&fep->phy_task); +} + + + +phy_cmd_t phy_cmd_relink[] = { { mk_mii_read(MII_REG_CR), mii_queue_relink }, + { mk_mii_end, } }; +phy_cmd_t phy_cmd_config[] = { { mk_mii_read(MII_REG_CR), mii_queue_config }, + { mk_mii_end, } }; + + + +/* Read remainder of PHY ID. +*/ +static void +mii_discover_phy3(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep; + int i; + + fep = netdev_priv(dev); + fep->phy_id |= (mii_reg & 0xffff); + printk("fec: PHY @ 0x%x, ID 0x%08x", fep->phy_addr, fep->phy_id); + + for(i = 0; phy_info[i]; i++) { + if(phy_info[i]->id == (fep->phy_id >> 4)) + break; + } + + if (phy_info[i]) + printk(" -- %s\n", phy_info[i]->name); + else + printk(" -- unknown PHY!\n"); + + fep->phy = phy_info[i]; + fep->phy_id_done = 1; +} + +/* Scan all of the MII PHY addresses looking for someone to respond + * with a valid ID. This usually happens quickly. + */ +static void +mii_discover_phy(uint mii_reg, struct net_device *dev) +{ + struct fec_enet_private *fep; + volatile fec_t *fecp; + uint phytype; + + fep = netdev_priv(dev); + fecp = fep->hwp; + + if (fep->phy_addr < 32) { + if ((phytype = (mii_reg & 0xffff)) != 0xffff && phytype != 0) { + + /* Got first part of ID, now get remainder. + */ + fep->phy_id = phytype << 16; + mii_queue(dev, mk_mii_read(MII_REG_PHYIR2), + mii_discover_phy3); + } + else { + fep->phy_addr++; + mii_queue(dev, mk_mii_read(MII_REG_PHYIR1), + mii_discover_phy); + } + } else { + printk("FEC: No PHY device found.\n"); + /* Disable external MII interface */ + fecp->fec_mii_speed = fep->phy_speed = 0; + fec_disable_phy_intr(); + } +} + +/* This interrupt occurs when the PHY detects a link change. +*/ +#ifdef CONFIG_RPXCLASSIC +static void +mii_link_interrupt(void *dev_id) +#else +static irqreturn_t +mii_link_interrupt(int irq, void * dev_id, struct pt_regs * regs) +#endif +{ + struct net_device *dev = dev_id; + struct fec_enet_private *fep = netdev_priv(dev); + + fec_phy_ack_intr(); + +#if 0 + disable_irq(fep->mii_irq); /* disable now, enable later */ +#endif + + mii_do_cmd(dev, fep->phy->ack_int); + mii_do_cmd(dev, phy_cmd_relink); /* restart and display status */ + + return IRQ_HANDLED; +} + +static int +fec_enet_open(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + + /* I should reset the ring buffers here, but I don't yet know + * a simple way to do that. + */ + fec_set_mac_address(dev); + + fep->sequence_done = 0; + fep->link = 0; + + if (fep->phy) { + mii_do_cmd(dev, fep->phy->ack_int); + mii_do_cmd(dev, fep->phy->config); + mii_do_cmd(dev, phy_cmd_config); /* display configuration */ + + /* FIXME: use netif_carrier_{on,off} ; this polls + * until link is up which is wrong... could be + * 30 seconds or more we are trapped in here. -jgarzik + */ + while(!fep->sequence_done) + schedule(); + + mii_do_cmd(dev, fep->phy->startup); + + /* Set the initial link state to true. A lot of hardware + * based on this device does not implement a PHY interrupt, + * so we are never notified of link change. + */ + fep->link = 1; + } else { + fep->link = 1; /* lets just try it and see */ + /* no phy, go full duplex, it's most likely a hub chip */ + fec_restart(dev, 1); + } + + netif_start_queue(dev); + fep->opened = 1; + return 0; /* Success */ +} + +static int +fec_enet_close(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + + /* Don't know what to do yet. + */ + fep->opened = 0; + netif_stop_queue(dev); + fec_stop(dev); + + return 0; +} + +static struct net_device_stats *fec_enet_get_stats(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + + return &fep->stats; +} + +/* Set or clear the multicast filter for this adaptor. + * Skeleton taken from sunlance driver. + * The CPM Ethernet implementation allows Multicast as well as individual + * MAC address filtering. Some of the drivers check to make sure it is + * a group multicast address, and discard those that are not. I guess I + * will do the same for now, but just remove the test if you want + * individual filtering as well (do the upper net layers want or support + * this kind of feature?). + */ + +#define HASH_BITS 6 /* #bits in hash */ +#define CRC32_POLY 0xEDB88320 + +static void set_multicast_list(struct net_device *dev) +{ + struct fec_enet_private *fep; + volatile fec_t *ep; + struct dev_mc_list *dmi; + unsigned int i, j, bit, data, crc; + unsigned char hash; + + fep = netdev_priv(dev); + ep = fep->hwp; + + if (dev->flags&IFF_PROMISC) { + /* Log any net taps. */ + printk("%s: Promiscuous mode enabled.\n", dev->name); + ep->fec_r_cntrl |= 0x0008; + } else { + + ep->fec_r_cntrl &= ~0x0008; + + if (dev->flags & IFF_ALLMULTI) { + /* Catch all multicast addresses, so set the + * filter to all 1's. + */ + ep->fec_hash_table_high = 0xffffffff; + ep->fec_hash_table_low = 0xffffffff; + } else { + /* Clear filter and add the addresses in hash register. + */ + ep->fec_hash_table_high = 0; + ep->fec_hash_table_low = 0; + + dmi = dev->mc_list; + + for (j = 0; j < dev->mc_count; j++, dmi = dmi->next) + { + /* Only support group multicast for now. + */ + if (!(dmi->dmi_addr[0] & 1)) + continue; + + /* calculate crc32 value of mac address + */ + crc = 0xffffffff; + + for (i = 0; i < dmi->dmi_addrlen; i++) + { + data = dmi->dmi_addr[i]; + for (bit = 0; bit < 8; bit++, data >>= 1) + { + crc = (crc >> 1) ^ + (((crc ^ data) & 1) ? CRC32_POLY : 0); + } + } + + /* only upper 6 bits (HASH_BITS) are used + which point to specific bit in he hash registers + */ + hash = (crc >> (32 - HASH_BITS)) & 0x3f; + + if (hash > 31) + ep->fec_hash_table_high |= 1 << (hash - 32); + else + ep->fec_hash_table_low |= 1 << hash; + } + } + } +} + +/* Set a MAC change in hardware. + */ +static void +fec_set_mac_address(struct net_device *dev) +{ + struct fec_enet_private *fep; + volatile fec_t *fecp; + + fep = netdev_priv(dev); + fecp = fep->hwp; + + /* Set station address. */ + fecp->fec_addr_low = fep->mac_addr[3] | (fep->mac_addr[2] << 8) | + (fep->mac_addr[1] << 16) | (fep->mac_addr[0] << 24); + fecp->fec_addr_high = (fep->mac_addr[5] << 16) | + (fep->mac_addr[4] << 24); + +} + +/* Initialize the FEC Ethernet on 860T (or ColdFire 5272). + */ + /* + * XXX: We need to clean up on failure exits here. + */ +int __init fec_enet_init(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + unsigned long mem_addr; + volatile cbd_t *bdp; + cbd_t *cbd_base; + volatile fec_t *fecp; + int i, j; + static int index = 0; + + /* Only allow us to be probed once. */ + if (index >= FEC_MAX_PORTS) + return -ENXIO; + + /* Create an Ethernet device instance. + */ + fecp = (volatile fec_t *) fec_hw[index]; + + fep->index = index; + fep->hwp = fecp; + + /* Whack a reset. We should wait for this. + */ + fecp->fec_ecntrl = 1; + udelay(10); + + /* Clear and enable interrupts */ + fecp->fec_ievent = 0xffc0; + fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_TXB | + FEC_ENET_RXF | FEC_ENET_RXB | FEC_ENET_MII); + fecp->fec_hash_table_high = 0; + fecp->fec_hash_table_low = 0; + fecp->fec_r_buff_size = PKT_MAXBLR_SIZE; + fecp->fec_ecntrl = 2; + fecp->fec_r_des_active = 0x01000000; + + /* Set the Ethernet address. If using multiple Enets on the 8xx, + * this needs some work to get unique addresses. + * + * This is our default MAC address unless the user changes + * it via eth_mac_addr (our dev->set_mac_addr handler). + */ + fec_get_mac(dev); + + /* Allocate memory for buffer descriptors. + */ + if (((RX_RING_SIZE + TX_RING_SIZE) * sizeof(cbd_t)) > PAGE_SIZE) { + printk("FEC init error. Need more space.\n"); + printk("FEC initialization failed.\n"); + return 1; + } + mem_addr = __get_free_page(GFP_KERNEL); + cbd_base = (cbd_t *)mem_addr; + /* XXX: missing check for allocation failure */ + + fec_uncache(mem_addr); + + /* Set receive and transmit descriptor base. + */ + fep->rx_bd_base = cbd_base; + fep->tx_bd_base = cbd_base + RX_RING_SIZE; + + fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; + fep->cur_rx = fep->rx_bd_base; + + fep->skb_cur = fep->skb_dirty = 0; + + /* Initialize the receive buffer descriptors. + */ + bdp = fep->rx_bd_base; + for (i=0; i<FEC_ENET_RX_PAGES; i++) { + + /* Allocate a page. + */ + mem_addr = __get_free_page(GFP_KERNEL); + /* XXX: missing check for allocation failure */ + + fec_uncache(mem_addr); + + /* Initialize the BD for every fragment in the page. + */ + for (j=0; j<FEC_ENET_RX_FRPPG; j++) { + bdp->cbd_sc = BD_ENET_RX_EMPTY; + bdp->cbd_bufaddr = __pa(mem_addr); + mem_addr += FEC_ENET_RX_FRSIZE; + bdp++; + } + } + + /* Set the last buffer to wrap. + */ + bdp--; + bdp->cbd_sc |= BD_SC_WRAP; + + /* ...and the same for transmmit. + */ + bdp = fep->tx_bd_base; + for (i=0, j=FEC_ENET_TX_FRPPG; i<TX_RING_SIZE; i++) { + if (j >= FEC_ENET_TX_FRPPG) { + mem_addr = __get_free_page(GFP_KERNEL); + j = 1; + } else { + mem_addr += FEC_ENET_TX_FRSIZE; + j++; + } + fep->tx_bounce[i] = (unsigned char *) mem_addr; + + /* Initialize the BD for every fragment in the page. + */ + bdp->cbd_sc = 0; + bdp->cbd_bufaddr = 0; + bdp++; + } + + /* Set the last buffer to wrap. + */ + bdp--; + bdp->cbd_sc |= BD_SC_WRAP; + + /* Set receive and transmit descriptor base. + */ + fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base)); + fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base)); + + /* Install our interrupt handlers. This varies depending on + * the architecture. + */ + fec_request_intrs(dev); + + dev->base_addr = (unsigned long)fecp; + + /* The FEC Ethernet specific entries in the device structure. */ + dev->open = fec_enet_open; + dev->hard_start_xmit = fec_enet_start_xmit; + dev->tx_timeout = fec_timeout; + dev->watchdog_timeo = TX_TIMEOUT; + dev->stop = fec_enet_close; + dev->get_stats = fec_enet_get_stats; + dev->set_multicast_list = set_multicast_list; + + for (i=0; i<NMII-1; i++) + mii_cmds[i].mii_next = &mii_cmds[i+1]; + mii_free = mii_cmds; + + /* setup MII interface */ + fec_set_mii(dev, fep); + + printk("%s: FEC ENET Version 0.2, ", dev->name); + for (i=0; i<5; i++) + printk("%02x:", dev->dev_addr[i]); + printk("%02x\n", dev->dev_addr[5]); + + /* Queue up command to detect the PHY and initialize the + * remainder of the interface. + */ + fep->phy_id_done = 0; + fep->phy_addr = 0; + mii_queue(dev, mk_mii_read(MII_REG_PHYIR1), mii_discover_phy); + + index++; + return 0; +} + +/* This function is called to start or restart the FEC during a link + * change. This only happens when switching between half and full + * duplex. + */ +static void +fec_restart(struct net_device *dev, int duplex) +{ + struct fec_enet_private *fep; + volatile cbd_t *bdp; + volatile fec_t *fecp; + int i; + + fep = netdev_priv(dev); + fecp = fep->hwp; + + /* Whack a reset. We should wait for this. + */ + fecp->fec_ecntrl = 1; + udelay(10); + + /* Enable interrupts we wish to service. + */ + fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_TXB | + FEC_ENET_RXF | FEC_ENET_RXB | FEC_ENET_MII); + + /* Clear any outstanding interrupt. + */ + fecp->fec_ievent = 0xffc0; + fec_enable_phy_intr(); + + /* Set station address. + */ + fecp->fec_addr_low = fep->mac_addr[3] | (fep->mac_addr[2] << 8) | + (fep->mac_addr[1] << 16) | (fep->mac_addr[0] << 24); + fecp->fec_addr_high = (fep->mac_addr[5] << 16) | + (fep->mac_addr[4] << 24); + + for (i=0; i<ETH_ALEN; i++) + dev->dev_addr[i] = fep->mac_addr[i]; + + /* Reset all multicast. + */ + fecp->fec_hash_table_high = 0; + fecp->fec_hash_table_low = 0; + + /* Set maximum receive buffer size. + */ + fecp->fec_r_buff_size = PKT_MAXBLR_SIZE; + + fec_localhw_setup(); + + /* Set receive and transmit descriptor base. + */ + fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base)); + fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base)); + + fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; + fep->cur_rx = fep->rx_bd_base; + + /* Reset SKB transmit buffers. + */ + fep->skb_cur = fep->skb_dirty = 0; + for (i=0; i<=TX_RING_MOD_MASK; i++) { + if (fep->tx_skbuff[i] != NULL) { + dev_kfree_skb_any(fep->tx_skbuff[i]); + fep->tx_skbuff[i] = NULL; + } + } + + /* Initialize the receive buffer descriptors. + */ + bdp = fep->rx_bd_base; + for (i=0; i<RX_RING_SIZE; i++) { + + /* Initialize the BD for every fragment in the page. + */ + bdp->cbd_sc = BD_ENET_RX_EMPTY; + bdp++; + } + + /* Set the last buffer to wrap. + */ + bdp--; + bdp->cbd_sc |= BD_SC_WRAP; + + /* ...and the same for transmmit. + */ + bdp = fep->tx_bd_base; + for (i=0; i<TX_RING_SIZE; i++) { + + /* Initialize the BD for every fragment in the page. + */ + bdp->cbd_sc = 0; + bdp->cbd_bufaddr = 0; + bdp++; + } + + /* Set the last buffer to wrap. + */ + bdp--; + bdp->cbd_sc |= BD_SC_WRAP; + + /* Enable MII mode. + */ + if (duplex) { + fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;/* MII enable */ + fecp->fec_x_cntrl = 0x04; /* FD enable */ + } + else { + /* MII enable|No Rcv on Xmit */ + fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x06; + fecp->fec_x_cntrl = 0x00; + } + fep->full_duplex = duplex; + + /* Set MII speed. + */ + fecp->fec_mii_speed = fep->phy_speed; + + /* And last, enable the transmit and receive processing. + */ + fecp->fec_ecntrl = 2; + fecp->fec_r_des_active = 0x01000000; +} + +static void +fec_stop(struct net_device *dev) +{ + volatile fec_t *fecp; + struct fec_enet_private *fep; + + fep = netdev_priv(dev); + fecp = fep->hwp; + + fecp->fec_x_cntrl = 0x01; /* Graceful transmit stop */ + + while(!(fecp->fec_ievent & 0x10000000)); + + /* Whack a reset. We should wait for this. + */ + fecp->fec_ecntrl = 1; + udelay(10); + + /* Clear outstanding MII command interrupts. + */ + fecp->fec_ievent = FEC_ENET_MII; + fec_enable_phy_intr(); + + fecp->fec_imask = FEC_ENET_MII; + fecp->fec_mii_speed = fep->phy_speed; +} + +static int __init fec_enet_module_init(void) +{ + struct net_device *dev; + int i, err; + + for (i = 0; (i < FEC_MAX_PORTS); i++) { + dev = alloc_etherdev(sizeof(struct fec_enet_private)); + if (!dev) + return -ENOMEM; + err = fec_enet_init(dev); + if (err) { + free_netdev(dev); + continue; + } + if (register_netdev(dev) != 0) { + /* XXX: missing cleanup here */ + free_netdev(dev); + return -EIO; + } + } + return 0; +} + +module_init(fec_enet_module_init); + +MODULE_LICENSE("GPL"); |