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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/sunhme.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/net/sunhme.c')
-rw-r--r--drivers/net/sunhme.c3426
1 files changed, 3426 insertions, 0 deletions
diff --git a/drivers/net/sunhme.c b/drivers/net/sunhme.c
new file mode 100644
index 000000000000..d837b3c35723
--- /dev/null
+++ b/drivers/net/sunhme.c
@@ -0,0 +1,3426 @@
+/* $Id: sunhme.c,v 1.124 2002/01/15 06:25:51 davem Exp $
+ * sunhme.c: Sparc HME/BigMac 10/100baseT half/full duplex auto switching,
+ * auto carrier detecting ethernet driver. Also known as the
+ * "Happy Meal Ethernet" found on SunSwift SBUS cards.
+ *
+ * Copyright (C) 1996, 1998, 1999, 2002, 2003 David S. Miller (davem@redhat.com)
+ *
+ * Changes :
+ * 2000/11/11 Willy Tarreau <willy AT meta-x.org>
+ * - port to non-sparc architectures. Tested only on x86 and
+ * only currently works with QFE PCI cards.
+ * - ability to specify the MAC address at module load time by passing this
+ * argument : macaddr=0x00,0x10,0x20,0x30,0x40,0x50
+ */
+
+static char version[] =
+ "sunhme.c:v2.02 24/Aug/2003 David S. Miller (davem@redhat.com)\n";
+
+#include <linux/config.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/slab.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/crc32.h>
+#include <linux/random.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/bitops.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/byteorder.h>
+
+#ifdef __sparc__
+#include <asm/idprom.h>
+#include <asm/sbus.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/auxio.h>
+#ifndef __sparc_v9__
+#include <asm/io-unit.h>
+#endif
+#endif
+#include <asm/uaccess.h>
+
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+
+#ifdef CONFIG_PCI
+#include <linux/pci.h>
+#ifdef __sparc__
+#include <asm/pbm.h>
+#endif
+#endif
+
+#include "sunhme.h"
+
+
+#define DRV_NAME "sunhme"
+
+static int macaddr[6];
+
+/* accept MAC address of the form macaddr=0x08,0x00,0x20,0x30,0x40,0x50 */
+module_param_array(macaddr, int, NULL, 0);
+MODULE_PARM_DESC(macaddr, "Happy Meal MAC address to set");
+MODULE_LICENSE("GPL");
+
+static struct happy_meal *root_happy_dev;
+
+#ifdef CONFIG_SBUS
+static struct quattro *qfe_sbus_list;
+#endif
+
+#ifdef CONFIG_PCI
+static struct quattro *qfe_pci_list;
+#endif
+
+#undef HMEDEBUG
+#undef SXDEBUG
+#undef RXDEBUG
+#undef TXDEBUG
+#undef TXLOGGING
+
+#ifdef TXLOGGING
+struct hme_tx_logent {
+ unsigned int tstamp;
+ int tx_new, tx_old;
+ unsigned int action;
+#define TXLOG_ACTION_IRQ 0x01
+#define TXLOG_ACTION_TXMIT 0x02
+#define TXLOG_ACTION_TBUSY 0x04
+#define TXLOG_ACTION_NBUFS 0x08
+ unsigned int status;
+};
+#define TX_LOG_LEN 128
+static struct hme_tx_logent tx_log[TX_LOG_LEN];
+static int txlog_cur_entry;
+static __inline__ void tx_add_log(struct happy_meal *hp, unsigned int a, unsigned int s)
+{
+ struct hme_tx_logent *tlp;
+ unsigned long flags;
+
+ save_and_cli(flags);
+ tlp = &tx_log[txlog_cur_entry];
+ tlp->tstamp = (unsigned int)jiffies;
+ tlp->tx_new = hp->tx_new;
+ tlp->tx_old = hp->tx_old;
+ tlp->action = a;
+ tlp->status = s;
+ txlog_cur_entry = (txlog_cur_entry + 1) & (TX_LOG_LEN - 1);
+ restore_flags(flags);
+}
+static __inline__ void tx_dump_log(void)
+{
+ int i, this;
+
+ this = txlog_cur_entry;
+ for (i = 0; i < TX_LOG_LEN; i++) {
+ printk("TXLOG[%d]: j[%08x] tx[N(%d)O(%d)] action[%08x] stat[%08x]\n", i,
+ tx_log[this].tstamp,
+ tx_log[this].tx_new, tx_log[this].tx_old,
+ tx_log[this].action, tx_log[this].status);
+ this = (this + 1) & (TX_LOG_LEN - 1);
+ }
+}
+static __inline__ void tx_dump_ring(struct happy_meal *hp)
+{
+ struct hmeal_init_block *hb = hp->happy_block;
+ struct happy_meal_txd *tp = &hb->happy_meal_txd[0];
+ int i;
+
+ for (i = 0; i < TX_RING_SIZE; i+=4) {
+ printk("TXD[%d..%d]: [%08x:%08x] [%08x:%08x] [%08x:%08x] [%08x:%08x]\n",
+ i, i + 4,
+ le32_to_cpu(tp[i].tx_flags), le32_to_cpu(tp[i].tx_addr),
+ le32_to_cpu(tp[i + 1].tx_flags), le32_to_cpu(tp[i + 1].tx_addr),
+ le32_to_cpu(tp[i + 2].tx_flags), le32_to_cpu(tp[i + 2].tx_addr),
+ le32_to_cpu(tp[i + 3].tx_flags), le32_to_cpu(tp[i + 3].tx_addr));
+ }
+}
+#else
+#define tx_add_log(hp, a, s) do { } while(0)
+#define tx_dump_log() do { } while(0)
+#define tx_dump_ring(hp) do { } while(0)
+#endif
+
+#ifdef HMEDEBUG
+#define HMD(x) printk x
+#else
+#define HMD(x)
+#endif
+
+/* #define AUTO_SWITCH_DEBUG */
+
+#ifdef AUTO_SWITCH_DEBUG
+#define ASD(x) printk x
+#else
+#define ASD(x)
+#endif
+
+#define DEFAULT_IPG0 16 /* For lance-mode only */
+#define DEFAULT_IPG1 8 /* For all modes */
+#define DEFAULT_IPG2 4 /* For all modes */
+#define DEFAULT_JAMSIZE 4 /* Toe jam */
+
+#if defined(CONFIG_PCI) && defined(MODULE)
+/* This happy_pci_ids is declared __initdata because it is only used
+ as an advisory to depmod. If this is ported to the new PCI interface
+ where it could be referenced at any time due to hot plugging,
+ the __initdata reference should be removed. */
+
+static struct pci_device_id happymeal_pci_ids[] = {
+ {
+ .vendor = PCI_VENDOR_ID_SUN,
+ .device = PCI_DEVICE_ID_SUN_HAPPYMEAL,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ },
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(pci, happymeal_pci_ids);
+
+#endif
+
+/* NOTE: In the descriptor writes one _must_ write the address
+ * member _first_. The card must not be allowed to see
+ * the updated descriptor flags until the address is
+ * correct. I've added a write memory barrier between
+ * the two stores so that I can sleep well at night... -DaveM
+ */
+
+#if defined(CONFIG_SBUS) && defined(CONFIG_PCI)
+static void sbus_hme_write32(void __iomem *reg, u32 val)
+{
+ sbus_writel(val, reg);
+}
+
+static u32 sbus_hme_read32(void __iomem *reg)
+{
+ return sbus_readl(reg);
+}
+
+static void sbus_hme_write_rxd(struct happy_meal_rxd *rxd, u32 flags, u32 addr)
+{
+ rxd->rx_addr = addr;
+ wmb();
+ rxd->rx_flags = flags;
+}
+
+static void sbus_hme_write_txd(struct happy_meal_txd *txd, u32 flags, u32 addr)
+{
+ txd->tx_addr = addr;
+ wmb();
+ txd->tx_flags = flags;
+}
+
+static u32 sbus_hme_read_desc32(u32 *p)
+{
+ return *p;
+}
+
+static void pci_hme_write32(void __iomem *reg, u32 val)
+{
+ writel(val, reg);
+}
+
+static u32 pci_hme_read32(void __iomem *reg)
+{
+ return readl(reg);
+}
+
+static void pci_hme_write_rxd(struct happy_meal_rxd *rxd, u32 flags, u32 addr)
+{
+ rxd->rx_addr = cpu_to_le32(addr);
+ wmb();
+ rxd->rx_flags = cpu_to_le32(flags);
+}
+
+static void pci_hme_write_txd(struct happy_meal_txd *txd, u32 flags, u32 addr)
+{
+ txd->tx_addr = cpu_to_le32(addr);
+ wmb();
+ txd->tx_flags = cpu_to_le32(flags);
+}
+
+static u32 pci_hme_read_desc32(u32 *p)
+{
+ return cpu_to_le32p(p);
+}
+
+#define hme_write32(__hp, __reg, __val) \
+ ((__hp)->write32((__reg), (__val)))
+#define hme_read32(__hp, __reg) \
+ ((__hp)->read32(__reg))
+#define hme_write_rxd(__hp, __rxd, __flags, __addr) \
+ ((__hp)->write_rxd((__rxd), (__flags), (__addr)))
+#define hme_write_txd(__hp, __txd, __flags, __addr) \
+ ((__hp)->write_txd((__txd), (__flags), (__addr)))
+#define hme_read_desc32(__hp, __p) \
+ ((__hp)->read_desc32(__p))
+#define hme_dma_map(__hp, __ptr, __size, __dir) \
+ ((__hp)->dma_map((__hp)->happy_dev, (__ptr), (__size), (__dir)))
+#define hme_dma_unmap(__hp, __addr, __size, __dir) \
+ ((__hp)->dma_unmap((__hp)->happy_dev, (__addr), (__size), (__dir)))
+#define hme_dma_sync_for_cpu(__hp, __addr, __size, __dir) \
+ ((__hp)->dma_sync_for_cpu((__hp)->happy_dev, (__addr), (__size), (__dir)))
+#define hme_dma_sync_for_device(__hp, __addr, __size, __dir) \
+ ((__hp)->dma_sync_for_device((__hp)->happy_dev, (__addr), (__size), (__dir)))
+#else
+#ifdef CONFIG_SBUS
+/* SBUS only compilation */
+#define hme_write32(__hp, __reg, __val) \
+ sbus_writel((__val), (__reg))
+#define hme_read32(__hp, __reg) \
+ sbus_readl(__reg)
+#define hme_write_rxd(__hp, __rxd, __flags, __addr) \
+do { (__rxd)->rx_addr = (__addr); \
+ wmb(); \
+ (__rxd)->rx_flags = (__flags); \
+} while(0)
+#define hme_write_txd(__hp, __txd, __flags, __addr) \
+do { (__txd)->tx_addr = (__addr); \
+ wmb(); \
+ (__txd)->tx_flags = (__flags); \
+} while(0)
+#define hme_read_desc32(__hp, __p) (*(__p))
+#define hme_dma_map(__hp, __ptr, __size, __dir) \
+ sbus_map_single((__hp)->happy_dev, (__ptr), (__size), (__dir))
+#define hme_dma_unmap(__hp, __addr, __size, __dir) \
+ sbus_unmap_single((__hp)->happy_dev, (__addr), (__size), (__dir))
+#define hme_dma_sync_for_cpu(__hp, __addr, __size, __dir) \
+ sbus_dma_sync_single_for_cpu((__hp)->happy_dev, (__addr), (__size), (__dir))
+#define hme_dma_sync_for_device(__hp, __addr, __size, __dir) \
+ sbus_dma_sync_single_for_device((__hp)->happy_dev, (__addr), (__size), (__dir))
+#else
+/* PCI only compilation */
+#define hme_write32(__hp, __reg, __val) \
+ writel((__val), (__reg))
+#define hme_read32(__hp, __reg) \
+ readl(__reg)
+#define hme_write_rxd(__hp, __rxd, __flags, __addr) \
+do { (__rxd)->rx_addr = cpu_to_le32(__addr); \
+ wmb(); \
+ (__rxd)->rx_flags = cpu_to_le32(__flags); \
+} while(0)
+#define hme_write_txd(__hp, __txd, __flags, __addr) \
+do { (__txd)->tx_addr = cpu_to_le32(__addr); \
+ wmb(); \
+ (__txd)->tx_flags = cpu_to_le32(__flags); \
+} while(0)
+#define hme_read_desc32(__hp, __p) cpu_to_le32p(__p)
+#define hme_dma_map(__hp, __ptr, __size, __dir) \
+ pci_map_single((__hp)->happy_dev, (__ptr), (__size), (__dir))
+#define hme_dma_unmap(__hp, __addr, __size, __dir) \
+ pci_unmap_single((__hp)->happy_dev, (__addr), (__size), (__dir))
+#define hme_dma_sync_for_cpu(__hp, __addr, __size, __dir) \
+ pci_dma_sync_single_for_cpu((__hp)->happy_dev, (__addr), (__size), (__dir))
+#define hme_dma_sync_for_device(__hp, __addr, __size, __dir) \
+ pci_dma_sync_single_for_device((__hp)->happy_dev, (__addr), (__size), (__dir))
+#endif
+#endif
+
+
+#ifdef SBUS_DMA_BIDIRECTIONAL
+# define DMA_BIDIRECTIONAL SBUS_DMA_BIDIRECTIONAL
+#else
+# define DMA_BIDIRECTIONAL 0
+#endif
+
+#ifdef SBUS_DMA_FROMDEVICE
+# define DMA_FROMDEVICE SBUS_DMA_FROMDEVICE
+#else
+# define DMA_TODEVICE 1
+#endif
+
+#ifdef SBUS_DMA_TODEVICE
+# define DMA_TODEVICE SBUS_DMA_TODEVICE
+#else
+# define DMA_FROMDEVICE 2
+#endif
+
+
+/* Oh yes, the MIF BitBang is mighty fun to program. BitBucket is more like it. */
+static void BB_PUT_BIT(struct happy_meal *hp, void __iomem *tregs, int bit)
+{
+ hme_write32(hp, tregs + TCVR_BBDATA, bit);
+ hme_write32(hp, tregs + TCVR_BBCLOCK, 0);
+ hme_write32(hp, tregs + TCVR_BBCLOCK, 1);
+}
+
+#if 0
+static u32 BB_GET_BIT(struct happy_meal *hp, void __iomem *tregs, int internal)
+{
+ u32 ret;
+
+ hme_write32(hp, tregs + TCVR_BBCLOCK, 0);
+ hme_write32(hp, tregs + TCVR_BBCLOCK, 1);
+ ret = hme_read32(hp, tregs + TCVR_CFG);
+ if (internal)
+ ret &= TCV_CFG_MDIO0;
+ else
+ ret &= TCV_CFG_MDIO1;
+
+ return ret;
+}
+#endif
+
+static u32 BB_GET_BIT2(struct happy_meal *hp, void __iomem *tregs, int internal)
+{
+ u32 retval;
+
+ hme_write32(hp, tregs + TCVR_BBCLOCK, 0);
+ udelay(1);
+ retval = hme_read32(hp, tregs + TCVR_CFG);
+ if (internal)
+ retval &= TCV_CFG_MDIO0;
+ else
+ retval &= TCV_CFG_MDIO1;
+ hme_write32(hp, tregs + TCVR_BBCLOCK, 1);
+
+ return retval;
+}
+
+#define TCVR_FAILURE 0x80000000 /* Impossible MIF read value */
+
+static int happy_meal_bb_read(struct happy_meal *hp,
+ void __iomem *tregs, int reg)
+{
+ u32 tmp;
+ int retval = 0;
+ int i;
+
+ ASD(("happy_meal_bb_read: reg=%d ", reg));
+
+ /* Enable the MIF BitBang outputs. */
+ hme_write32(hp, tregs + TCVR_BBOENAB, 1);
+
+ /* Force BitBang into the idle state. */
+ for (i = 0; i < 32; i++)
+ BB_PUT_BIT(hp, tregs, 1);
+
+ /* Give it the read sequence. */
+ BB_PUT_BIT(hp, tregs, 0);
+ BB_PUT_BIT(hp, tregs, 1);
+ BB_PUT_BIT(hp, tregs, 1);
+ BB_PUT_BIT(hp, tregs, 0);
+
+ /* Give it the PHY address. */
+ tmp = hp->paddr & 0xff;
+ for (i = 4; i >= 0; i--)
+ BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1));
+
+ /* Tell it what register we want to read. */
+ tmp = (reg & 0xff);
+ for (i = 4; i >= 0; i--)
+ BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1));
+
+ /* Close down the MIF BitBang outputs. */
+ hme_write32(hp, tregs + TCVR_BBOENAB, 0);
+
+ /* Now read in the value. */
+ (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal));
+ for (i = 15; i >= 0; i--)
+ retval |= BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal));
+ (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal));
+ (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal));
+ (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal));
+ ASD(("value=%x\n", retval));
+ return retval;
+}
+
+static void happy_meal_bb_write(struct happy_meal *hp,
+ void __iomem *tregs, int reg,
+ unsigned short value)
+{
+ u32 tmp;
+ int i;
+
+ ASD(("happy_meal_bb_write: reg=%d value=%x\n", reg, value));
+
+ /* Enable the MIF BitBang outputs. */
+ hme_write32(hp, tregs + TCVR_BBOENAB, 1);
+
+ /* Force BitBang into the idle state. */
+ for (i = 0; i < 32; i++)
+ BB_PUT_BIT(hp, tregs, 1);
+
+ /* Give it write sequence. */
+ BB_PUT_BIT(hp, tregs, 0);
+ BB_PUT_BIT(hp, tregs, 1);
+ BB_PUT_BIT(hp, tregs, 0);
+ BB_PUT_BIT(hp, tregs, 1);
+
+ /* Give it the PHY address. */
+ tmp = (hp->paddr & 0xff);
+ for (i = 4; i >= 0; i--)
+ BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1));
+
+ /* Tell it what register we will be writing. */
+ tmp = (reg & 0xff);
+ for (i = 4; i >= 0; i--)
+ BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1));
+
+ /* Tell it to become ready for the bits. */
+ BB_PUT_BIT(hp, tregs, 1);
+ BB_PUT_BIT(hp, tregs, 0);
+
+ for (i = 15; i >= 0; i--)
+ BB_PUT_BIT(hp, tregs, ((value >> i) & 1));
+
+ /* Close down the MIF BitBang outputs. */
+ hme_write32(hp, tregs + TCVR_BBOENAB, 0);
+}
+
+#define TCVR_READ_TRIES 16
+
+static int happy_meal_tcvr_read(struct happy_meal *hp,
+ void __iomem *tregs, int reg)
+{
+ int tries = TCVR_READ_TRIES;
+ int retval;
+
+ ASD(("happy_meal_tcvr_read: reg=0x%02x ", reg));
+ if (hp->tcvr_type == none) {
+ ASD(("no transceiver, value=TCVR_FAILURE\n"));
+ return TCVR_FAILURE;
+ }
+
+ if (!(hp->happy_flags & HFLAG_FENABLE)) {
+ ASD(("doing bit bang\n"));
+ return happy_meal_bb_read(hp, tregs, reg);
+ }
+
+ hme_write32(hp, tregs + TCVR_FRAME,
+ (FRAME_READ | (hp->paddr << 23) | ((reg & 0xff) << 18)));
+ while (!(hme_read32(hp, tregs + TCVR_FRAME) & 0x10000) && --tries)
+ udelay(20);
+ if (!tries) {
+ printk(KERN_ERR "happy meal: Aieee, transceiver MIF read bolixed\n");
+ return TCVR_FAILURE;
+ }
+ retval = hme_read32(hp, tregs + TCVR_FRAME) & 0xffff;
+ ASD(("value=%04x\n", retval));
+ return retval;
+}
+
+#define TCVR_WRITE_TRIES 16
+
+static void happy_meal_tcvr_write(struct happy_meal *hp,
+ void __iomem *tregs, int reg,
+ unsigned short value)
+{
+ int tries = TCVR_WRITE_TRIES;
+
+ ASD(("happy_meal_tcvr_write: reg=0x%02x value=%04x\n", reg, value));
+
+ /* Welcome to Sun Microsystems, can I take your order please? */
+ if (!(hp->happy_flags & HFLAG_FENABLE)) {
+ happy_meal_bb_write(hp, tregs, reg, value);
+ return;
+ }
+
+ /* Would you like fries with that? */
+ hme_write32(hp, tregs + TCVR_FRAME,
+ (FRAME_WRITE | (hp->paddr << 23) |
+ ((reg & 0xff) << 18) | (value & 0xffff)));
+ while (!(hme_read32(hp, tregs + TCVR_FRAME) & 0x10000) && --tries)
+ udelay(20);
+
+ /* Anything else? */
+ if (!tries)
+ printk(KERN_ERR "happy meal: Aieee, transceiver MIF write bolixed\n");
+
+ /* Fifty-two cents is your change, have a nice day. */
+}
+
+/* Auto negotiation. The scheme is very simple. We have a timer routine
+ * that keeps watching the auto negotiation process as it progresses.
+ * The DP83840 is first told to start doing it's thing, we set up the time
+ * and place the timer state machine in it's initial state.
+ *
+ * Here the timer peeks at the DP83840 status registers at each click to see
+ * if the auto negotiation has completed, we assume here that the DP83840 PHY
+ * will time out at some point and just tell us what (didn't) happen. For
+ * complete coverage we only allow so many of the ticks at this level to run,
+ * when this has expired we print a warning message and try another strategy.
+ * This "other" strategy is to force the interface into various speed/duplex
+ * configurations and we stop when we see a link-up condition before the
+ * maximum number of "peek" ticks have occurred.
+ *
+ * Once a valid link status has been detected we configure the BigMAC and
+ * the rest of the Happy Meal to speak the most efficient protocol we could
+ * get a clean link for. The priority for link configurations, highest first
+ * is:
+ * 100 Base-T Full Duplex
+ * 100 Base-T Half Duplex
+ * 10 Base-T Full Duplex
+ * 10 Base-T Half Duplex
+ *
+ * We start a new timer now, after a successful auto negotiation status has
+ * been detected. This timer just waits for the link-up bit to get set in
+ * the BMCR of the DP83840. When this occurs we print a kernel log message
+ * describing the link type in use and the fact that it is up.
+ *
+ * If a fatal error of some sort is signalled and detected in the interrupt
+ * service routine, and the chip is reset, or the link is ifconfig'd down
+ * and then back up, this entire process repeats itself all over again.
+ */
+static int try_next_permutation(struct happy_meal *hp, void __iomem *tregs)
+{
+ hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+
+ /* Downgrade from full to half duplex. Only possible
+ * via ethtool.
+ */
+ if (hp->sw_bmcr & BMCR_FULLDPLX) {
+ hp->sw_bmcr &= ~(BMCR_FULLDPLX);
+ happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+ return 0;
+ }
+
+ /* Downgrade from 100 to 10. */
+ if (hp->sw_bmcr & BMCR_SPEED100) {
+ hp->sw_bmcr &= ~(BMCR_SPEED100);
+ happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+ return 0;
+ }
+
+ /* We've tried everything. */
+ return -1;
+}
+
+static void display_link_mode(struct happy_meal *hp, void __iomem *tregs)
+{
+ printk(KERN_INFO "%s: Link is up using ", hp->dev->name);
+ if (hp->tcvr_type == external)
+ printk("external ");
+ else
+ printk("internal ");
+ printk("transceiver at ");
+ hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA);
+ if (hp->sw_lpa & (LPA_100HALF | LPA_100FULL)) {
+ if (hp->sw_lpa & LPA_100FULL)
+ printk("100Mb/s, Full Duplex.\n");
+ else
+ printk("100Mb/s, Half Duplex.\n");
+ } else {
+ if (hp->sw_lpa & LPA_10FULL)
+ printk("10Mb/s, Full Duplex.\n");
+ else
+ printk("10Mb/s, Half Duplex.\n");
+ }
+}
+
+static void display_forced_link_mode(struct happy_meal *hp, void __iomem *tregs)
+{
+ printk(KERN_INFO "%s: Link has been forced up using ", hp->dev->name);
+ if (hp->tcvr_type == external)
+ printk("external ");
+ else
+ printk("internal ");
+ printk("transceiver at ");
+ hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+ if (hp->sw_bmcr & BMCR_SPEED100)
+ printk("100Mb/s, ");
+ else
+ printk("10Mb/s, ");
+ if (hp->sw_bmcr & BMCR_FULLDPLX)
+ printk("Full Duplex.\n");
+ else
+ printk("Half Duplex.\n");
+}
+
+static int set_happy_link_modes(struct happy_meal *hp, void __iomem *tregs)
+{
+ int full;
+
+ /* All we care about is making sure the bigmac tx_cfg has a
+ * proper duplex setting.
+ */
+ if (hp->timer_state == arbwait) {
+ hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA);
+ if (!(hp->sw_lpa & (LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL)))
+ goto no_response;
+ if (hp->sw_lpa & LPA_100FULL)
+ full = 1;
+ else if (hp->sw_lpa & LPA_100HALF)
+ full = 0;
+ else if (hp->sw_lpa & LPA_10FULL)
+ full = 1;
+ else
+ full = 0;
+ } else {
+ /* Forcing a link mode. */
+ hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+ if (hp->sw_bmcr & BMCR_FULLDPLX)
+ full = 1;
+ else
+ full = 0;
+ }
+
+ /* Before changing other bits in the tx_cfg register, and in
+ * general any of other the TX config registers too, you
+ * must:
+ * 1) Clear Enable
+ * 2) Poll with reads until that bit reads back as zero
+ * 3) Make TX configuration changes
+ * 4) Set Enable once more
+ */
+ hme_write32(hp, hp->bigmacregs + BMAC_TXCFG,
+ hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) &
+ ~(BIGMAC_TXCFG_ENABLE));
+ while (hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) & BIGMAC_TXCFG_ENABLE)
+ barrier();
+ if (full) {
+ hp->happy_flags |= HFLAG_FULL;
+ hme_write32(hp, hp->bigmacregs + BMAC_TXCFG,
+ hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) |
+ BIGMAC_TXCFG_FULLDPLX);
+ } else {
+ hp->happy_flags &= ~(HFLAG_FULL);
+ hme_write32(hp, hp->bigmacregs + BMAC_TXCFG,
+ hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) &
+ ~(BIGMAC_TXCFG_FULLDPLX));
+ }
+ hme_write32(hp, hp->bigmacregs + BMAC_TXCFG,
+ hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) |
+ BIGMAC_TXCFG_ENABLE);
+ return 0;
+no_response:
+ return 1;
+}
+
+static int happy_meal_init(struct happy_meal *hp);
+
+static int is_lucent_phy(struct happy_meal *hp)
+{
+ void __iomem *tregs = hp->tcvregs;
+ unsigned short mr2, mr3;
+ int ret = 0;
+
+ mr2 = happy_meal_tcvr_read(hp, tregs, 2);
+ mr3 = happy_meal_tcvr_read(hp, tregs, 3);
+ if ((mr2 & 0xffff) == 0x0180 &&
+ ((mr3 & 0xffff) >> 10) == 0x1d)
+ ret = 1;
+
+ return ret;
+}
+
+static void happy_meal_timer(unsigned long data)
+{
+ struct happy_meal *hp = (struct happy_meal *) data;
+ void __iomem *tregs = hp->tcvregs;
+ int restart_timer = 0;
+
+ spin_lock_irq(&hp->happy_lock);
+
+ hp->timer_ticks++;
+ switch(hp->timer_state) {
+ case arbwait:
+ /* Only allow for 5 ticks, thats 10 seconds and much too
+ * long to wait for arbitration to complete.
+ */
+ if (hp->timer_ticks >= 10) {
+ /* Enter force mode. */
+ do_force_mode:
+ hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+ printk(KERN_NOTICE "%s: Auto-Negotiation unsuccessful, trying force link mode\n",
+ hp->dev->name);
+ hp->sw_bmcr = BMCR_SPEED100;
+ happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+ if (!is_lucent_phy(hp)) {
+ /* OK, seems we need do disable the transceiver for the first
+ * tick to make sure we get an accurate link state at the
+ * second tick.
+ */
+ hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, DP83840_CSCONFIG);
+ hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB);
+ happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG, hp->sw_csconfig);
+ }
+ hp->timer_state = ltrywait;
+ hp->timer_ticks = 0;
+ restart_timer = 1;
+ } else {
+ /* Anything interesting happen? */
+ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+ if (hp->sw_bmsr & BMSR_ANEGCOMPLETE) {
+ int ret;
+
+ /* Just what we've been waiting for... */
+ ret = set_happy_link_modes(hp, tregs);
+ if (ret) {
+ /* Ooops, something bad happened, go to force
+ * mode.
+ *
+ * XXX Broken hubs which don't support 802.3u
+ * XXX auto-negotiation make this happen as well.
+ */
+ goto do_force_mode;
+ }
+
+ /* Success, at least so far, advance our state engine. */
+ hp->timer_state = lupwait;
+ restart_timer = 1;
+ } else {
+ restart_timer = 1;
+ }
+ }
+ break;
+
+ case lupwait:
+ /* Auto negotiation was successful and we are awaiting a
+ * link up status. I have decided to let this timer run
+ * forever until some sort of error is signalled, reporting
+ * a message to the user at 10 second intervals.
+ */
+ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+ if (hp->sw_bmsr & BMSR_LSTATUS) {
+ /* Wheee, it's up, display the link mode in use and put
+ * the timer to sleep.
+ */
+ display_link_mode(hp, tregs);
+ hp->timer_state = asleep;
+ restart_timer = 0;
+ } else {
+ if (hp->timer_ticks >= 10) {
+ printk(KERN_NOTICE "%s: Auto negotiation successful, link still "
+ "not completely up.\n", hp->dev->name);
+ hp->timer_ticks = 0;
+ restart_timer = 1;
+ } else {
+ restart_timer = 1;
+ }
+ }
+ break;
+
+ case ltrywait:
+ /* Making the timeout here too long can make it take
+ * annoyingly long to attempt all of the link mode
+ * permutations, but then again this is essentially
+ * error recovery code for the most part.
+ */
+ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+ hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, DP83840_CSCONFIG);
+ if (hp->timer_ticks == 1) {
+ if (!is_lucent_phy(hp)) {
+ /* Re-enable transceiver, we'll re-enable the transceiver next
+ * tick, then check link state on the following tick.
+ */
+ hp->sw_csconfig |= CSCONFIG_TCVDISAB;
+ happy_meal_tcvr_write(hp, tregs,
+ DP83840_CSCONFIG, hp->sw_csconfig);
+ }
+ restart_timer = 1;
+ break;
+ }
+ if (hp->timer_ticks == 2) {
+ if (!is_lucent_phy(hp)) {
+ hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB);
+ happy_meal_tcvr_write(hp, tregs,
+ DP83840_CSCONFIG, hp->sw_csconfig);
+ }
+ restart_timer = 1;
+ break;
+ }
+ if (hp->sw_bmsr & BMSR_LSTATUS) {
+ /* Force mode selection success. */
+ display_forced_link_mode(hp, tregs);
+ set_happy_link_modes(hp, tregs); /* XXX error? then what? */
+ hp->timer_state = asleep;
+ restart_timer = 0;
+ } else {
+ if (hp->timer_ticks >= 4) { /* 6 seconds or so... */
+ int ret;
+
+ ret = try_next_permutation(hp, tregs);
+ if (ret == -1) {
+ /* Aieee, tried them all, reset the
+ * chip and try all over again.
+ */
+
+ /* Let the user know... */
+ printk(KERN_NOTICE "%s: Link down, cable problem?\n",
+ hp->dev->name);
+
+ ret = happy_meal_init(hp);
+ if (ret) {
+ /* ho hum... */
+ printk(KERN_ERR "%s: Error, cannot re-init the "
+ "Happy Meal.\n", hp->dev->name);
+ }
+ goto out;
+ }
+ if (!is_lucent_phy(hp)) {
+ hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs,
+ DP83840_CSCONFIG);
+ hp->sw_csconfig |= CSCONFIG_TCVDISAB;
+ happy_meal_tcvr_write(hp, tregs,
+ DP83840_CSCONFIG, hp->sw_csconfig);
+ }
+ hp->timer_ticks = 0;
+ restart_timer = 1;
+ } else {
+ restart_timer = 1;
+ }
+ }
+ break;
+
+ case asleep:
+ default:
+ /* Can't happens.... */
+ printk(KERN_ERR "%s: Aieee, link timer is asleep but we got one anyways!\n",
+ hp->dev->name);
+ restart_timer = 0;
+ hp->timer_ticks = 0;
+ hp->timer_state = asleep; /* foo on you */
+ break;
+ };
+
+ if (restart_timer) {
+ hp->happy_timer.expires = jiffies + ((12 * HZ)/10); /* 1.2 sec. */
+ add_timer(&hp->happy_timer);
+ }
+
+out:
+ spin_unlock_irq(&hp->happy_lock);
+}
+
+#define TX_RESET_TRIES 32
+#define RX_RESET_TRIES 32
+
+/* hp->happy_lock must be held */
+static void happy_meal_tx_reset(struct happy_meal *hp, void __iomem *bregs)
+{
+ int tries = TX_RESET_TRIES;
+
+ HMD(("happy_meal_tx_reset: reset, "));
+
+ /* Would you like to try our SMCC Delux? */
+ hme_write32(hp, bregs + BMAC_TXSWRESET, 0);
+ while ((hme_read32(hp, bregs + BMAC_TXSWRESET) & 1) && --tries)
+ udelay(20);
+
+ /* Lettuce, tomato, buggy hardware (no extra charge)? */
+ if (!tries)
+ printk(KERN_ERR "happy meal: Transceiver BigMac ATTACK!");
+
+ /* Take care. */
+ HMD(("done\n"));
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_rx_reset(struct happy_meal *hp, void __iomem *bregs)
+{
+ int tries = RX_RESET_TRIES;
+
+ HMD(("happy_meal_rx_reset: reset, "));
+
+ /* We have a special on GNU/Viking hardware bugs today. */
+ hme_write32(hp, bregs + BMAC_RXSWRESET, 0);
+ while ((hme_read32(hp, bregs + BMAC_RXSWRESET) & 1) && --tries)
+ udelay(20);
+
+ /* Will that be all? */
+ if (!tries)
+ printk(KERN_ERR "happy meal: Receiver BigMac ATTACK!");
+
+ /* Don't forget your vik_1137125_wa. Have a nice day. */
+ HMD(("done\n"));
+}
+
+#define STOP_TRIES 16
+
+/* hp->happy_lock must be held */
+static void happy_meal_stop(struct happy_meal *hp, void __iomem *gregs)
+{
+ int tries = STOP_TRIES;
+
+ HMD(("happy_meal_stop: reset, "));
+
+ /* We're consolidating our STB products, it's your lucky day. */
+ hme_write32(hp, gregs + GREG_SWRESET, GREG_RESET_ALL);
+ while (hme_read32(hp, gregs + GREG_SWRESET) && --tries)
+ udelay(20);
+
+ /* Come back next week when we are "Sun Microelectronics". */
+ if (!tries)
+ printk(KERN_ERR "happy meal: Fry guys.");
+
+ /* Remember: "Different name, same old buggy as shit hardware." */
+ HMD(("done\n"));
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_get_counters(struct happy_meal *hp, void __iomem *bregs)
+{
+ struct net_device_stats *stats = &hp->net_stats;
+
+ stats->rx_crc_errors += hme_read32(hp, bregs + BMAC_RCRCECTR);
+ hme_write32(hp, bregs + BMAC_RCRCECTR, 0);
+
+ stats->rx_frame_errors += hme_read32(hp, bregs + BMAC_UNALECTR);
+ hme_write32(hp, bregs + BMAC_UNALECTR, 0);
+
+ stats->rx_length_errors += hme_read32(hp, bregs + BMAC_GLECTR);
+ hme_write32(hp, bregs + BMAC_GLECTR, 0);
+
+ stats->tx_aborted_errors += hme_read32(hp, bregs + BMAC_EXCTR);
+
+ stats->collisions +=
+ (hme_read32(hp, bregs + BMAC_EXCTR) +
+ hme_read32(hp, bregs + BMAC_LTCTR));
+ hme_write32(hp, bregs + BMAC_EXCTR, 0);
+ hme_write32(hp, bregs + BMAC_LTCTR, 0);
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_poll_stop(struct happy_meal *hp, void __iomem *tregs)
+{
+ ASD(("happy_meal_poll_stop: "));
+
+ /* If polling disabled or not polling already, nothing to do. */
+ if ((hp->happy_flags & (HFLAG_POLLENABLE | HFLAG_POLL)) !=
+ (HFLAG_POLLENABLE | HFLAG_POLL)) {
+ HMD(("not polling, return\n"));
+ return;
+ }
+
+ /* Shut up the MIF. */
+ ASD(("were polling, mif ints off, "));
+ hme_write32(hp, tregs + TCVR_IMASK, 0xffff);
+
+ /* Turn off polling. */
+ ASD(("polling off, "));
+ hme_write32(hp, tregs + TCVR_CFG,
+ hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_PENABLE));
+
+ /* We are no longer polling. */
+ hp->happy_flags &= ~(HFLAG_POLL);
+
+ /* Let the bits set. */
+ udelay(200);
+ ASD(("done\n"));
+}
+
+/* Only Sun can take such nice parts and fuck up the programming interface
+ * like this. Good job guys...
+ */
+#define TCVR_RESET_TRIES 16 /* It should reset quickly */
+#define TCVR_UNISOLATE_TRIES 32 /* Dis-isolation can take longer. */
+
+/* hp->happy_lock must be held */
+static int happy_meal_tcvr_reset(struct happy_meal *hp, void __iomem *tregs)
+{
+ u32 tconfig;
+ int result, tries = TCVR_RESET_TRIES;
+
+ tconfig = hme_read32(hp, tregs + TCVR_CFG);
+ ASD(("happy_meal_tcvr_reset: tcfg<%08lx> ", tconfig));
+ if (hp->tcvr_type == external) {
+ ASD(("external<"));
+ hme_write32(hp, tregs + TCVR_CFG, tconfig & ~(TCV_CFG_PSELECT));
+ hp->tcvr_type = internal;
+ hp->paddr = TCV_PADDR_ITX;
+ ASD(("ISOLATE,"));
+ happy_meal_tcvr_write(hp, tregs, MII_BMCR,
+ (BMCR_LOOPBACK|BMCR_PDOWN|BMCR_ISOLATE));
+ result = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+ if (result == TCVR_FAILURE) {
+ ASD(("phyread_fail>\n"));
+ return -1;
+ }
+ ASD(("phyread_ok,PSELECT>"));
+ hme_write32(hp, tregs + TCVR_CFG, tconfig | TCV_CFG_PSELECT);
+ hp->tcvr_type = external;
+ hp->paddr = TCV_PADDR_ETX;
+ } else {
+ if (tconfig & TCV_CFG_MDIO1) {
+ ASD(("internal<PSELECT,"));
+ hme_write32(hp, tregs + TCVR_CFG, (tconfig | TCV_CFG_PSELECT));
+ ASD(("ISOLATE,"));
+ happy_meal_tcvr_write(hp, tregs, MII_BMCR,
+ (BMCR_LOOPBACK|BMCR_PDOWN|BMCR_ISOLATE));
+ result = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+ if (result == TCVR_FAILURE) {
+ ASD(("phyread_fail>\n"));
+ return -1;
+ }
+ ASD(("phyread_ok,~PSELECT>"));
+ hme_write32(hp, tregs + TCVR_CFG, (tconfig & ~(TCV_CFG_PSELECT)));
+ hp->tcvr_type = internal;
+ hp->paddr = TCV_PADDR_ITX;
+ }
+ }
+
+ ASD(("BMCR_RESET "));
+ happy_meal_tcvr_write(hp, tregs, MII_BMCR, BMCR_RESET);
+
+ while (--tries) {
+ result = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+ if (result == TCVR_FAILURE)
+ return -1;
+ hp->sw_bmcr = result;
+ if (!(result & BMCR_RESET))
+ break;
+ udelay(20);
+ }
+ if (!tries) {
+ ASD(("BMCR RESET FAILED!\n"));
+ return -1;
+ }
+ ASD(("RESET_OK\n"));
+
+ /* Get fresh copies of the PHY registers. */
+ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+ hp->sw_physid1 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID1);
+ hp->sw_physid2 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID2);
+ hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE);
+
+ ASD(("UNISOLATE"));
+ hp->sw_bmcr &= ~(BMCR_ISOLATE);
+ happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+ tries = TCVR_UNISOLATE_TRIES;
+ while (--tries) {
+ result = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+ if (result == TCVR_FAILURE)
+ return -1;
+ if (!(result & BMCR_ISOLATE))
+ break;
+ udelay(20);
+ }
+ if (!tries) {
+ ASD((" FAILED!\n"));
+ return -1;
+ }
+ ASD((" SUCCESS and CSCONFIG_DFBYPASS\n"));
+ if (!is_lucent_phy(hp)) {
+ result = happy_meal_tcvr_read(hp, tregs,
+ DP83840_CSCONFIG);
+ happy_meal_tcvr_write(hp, tregs,
+ DP83840_CSCONFIG, (result | CSCONFIG_DFBYPASS));
+ }
+ return 0;
+}
+
+/* Figure out whether we have an internal or external transceiver.
+ *
+ * hp->happy_lock must be held
+ */
+static void happy_meal_transceiver_check(struct happy_meal *hp, void __iomem *tregs)
+{
+ unsigned long tconfig = hme_read32(hp, tregs + TCVR_CFG);
+
+ ASD(("happy_meal_transceiver_check: tcfg=%08lx ", tconfig));
+ if (hp->happy_flags & HFLAG_POLL) {
+ /* If we are polling, we must stop to get the transceiver type. */
+ ASD(("<polling> "));
+ if (hp->tcvr_type == internal) {
+ if (tconfig & TCV_CFG_MDIO1) {
+ ASD(("<internal> <poll stop> "));
+ happy_meal_poll_stop(hp, tregs);
+ hp->paddr = TCV_PADDR_ETX;
+ hp->tcvr_type = external;
+ ASD(("<external>\n"));
+ tconfig &= ~(TCV_CFG_PENABLE);
+ tconfig |= TCV_CFG_PSELECT;
+ hme_write32(hp, tregs + TCVR_CFG, tconfig);
+ }
+ } else {
+ if (hp->tcvr_type == external) {
+ ASD(("<external> "));
+ if (!(hme_read32(hp, tregs + TCVR_STATUS) >> 16)) {
+ ASD(("<poll stop> "));
+ happy_meal_poll_stop(hp, tregs);
+ hp->paddr = TCV_PADDR_ITX;
+ hp->tcvr_type = internal;
+ ASD(("<internal>\n"));
+ hme_write32(hp, tregs + TCVR_CFG,
+ hme_read32(hp, tregs + TCVR_CFG) &
+ ~(TCV_CFG_PSELECT));
+ }
+ ASD(("\n"));
+ } else {
+ ASD(("<none>\n"));
+ }
+ }
+ } else {
+ u32 reread = hme_read32(hp, tregs + TCVR_CFG);
+
+ /* Else we can just work off of the MDIO bits. */
+ ASD(("<not polling> "));
+ if (reread & TCV_CFG_MDIO1) {
+ hme_write32(hp, tregs + TCVR_CFG, tconfig | TCV_CFG_PSELECT);
+ hp->paddr = TCV_PADDR_ETX;
+ hp->tcvr_type = external;
+ ASD(("<external>\n"));
+ } else {
+ if (reread & TCV_CFG_MDIO0) {
+ hme_write32(hp, tregs + TCVR_CFG,
+ tconfig & ~(TCV_CFG_PSELECT));
+ hp->paddr = TCV_PADDR_ITX;
+ hp->tcvr_type = internal;
+ ASD(("<internal>\n"));
+ } else {
+ printk(KERN_ERR "happy meal: Transceiver and a coke please.");
+ hp->tcvr_type = none; /* Grrr... */
+ ASD(("<none>\n"));
+ }
+ }
+ }
+}
+
+/* The receive ring buffers are a bit tricky to get right. Here goes...
+ *
+ * The buffers we dma into must be 64 byte aligned. So we use a special
+ * alloc_skb() routine for the happy meal to allocate 64 bytes more than
+ * we really need.
+ *
+ * We use skb_reserve() to align the data block we get in the skb. We
+ * also program the etxregs->cfg register to use an offset of 2. This
+ * imperical constant plus the ethernet header size will always leave
+ * us with a nicely aligned ip header once we pass things up to the
+ * protocol layers.
+ *
+ * The numbers work out to:
+ *
+ * Max ethernet frame size 1518
+ * Ethernet header size 14
+ * Happy Meal base offset 2
+ *
+ * Say a skb data area is at 0xf001b010, and its size alloced is
+ * (ETH_FRAME_LEN + 64 + 2) = (1514 + 64 + 2) = 1580 bytes.
+ *
+ * First our alloc_skb() routine aligns the data base to a 64 byte
+ * boundary. We now have 0xf001b040 as our skb data address. We
+ * plug this into the receive descriptor address.
+ *
+ * Next, we skb_reserve() 2 bytes to account for the Happy Meal offset.
+ * So now the data we will end up looking at starts at 0xf001b042. When
+ * the packet arrives, we will check out the size received and subtract
+ * this from the skb->length. Then we just pass the packet up to the
+ * protocols as is, and allocate a new skb to replace this slot we have
+ * just received from.
+ *
+ * The ethernet layer will strip the ether header from the front of the
+ * skb we just sent to it, this leaves us with the ip header sitting
+ * nicely aligned at 0xf001b050. Also, for tcp and udp packets the
+ * Happy Meal has even checksummed the tcp/udp data for us. The 16
+ * bit checksum is obtained from the low bits of the receive descriptor
+ * flags, thus:
+ *
+ * skb->csum = rxd->rx_flags & 0xffff;
+ * skb->ip_summed = CHECKSUM_HW;
+ *
+ * before sending off the skb to the protocols, and we are good as gold.
+ */
+static void happy_meal_clean_rings(struct happy_meal *hp)
+{
+ int i;
+
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ if (hp->rx_skbs[i] != NULL) {
+ struct sk_buff *skb = hp->rx_skbs[i];
+ struct happy_meal_rxd *rxd;
+ u32 dma_addr;
+
+ rxd = &hp->happy_block->happy_meal_rxd[i];
+ dma_addr = hme_read_desc32(hp, &rxd->rx_addr);
+ hme_dma_unmap(hp, dma_addr, RX_BUF_ALLOC_SIZE, DMA_FROMDEVICE);
+ dev_kfree_skb_any(skb);
+ hp->rx_skbs[i] = NULL;
+ }
+ }
+
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ if (hp->tx_skbs[i] != NULL) {
+ struct sk_buff *skb = hp->tx_skbs[i];
+ struct happy_meal_txd *txd;
+ u32 dma_addr;
+ int frag;
+
+ hp->tx_skbs[i] = NULL;
+
+ for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
+ txd = &hp->happy_block->happy_meal_txd[i];
+ dma_addr = hme_read_desc32(hp, &txd->tx_addr);
+ hme_dma_unmap(hp, dma_addr,
+ (hme_read_desc32(hp, &txd->tx_flags)
+ & TXFLAG_SIZE),
+ DMA_TODEVICE);
+
+ if (frag != skb_shinfo(skb)->nr_frags)
+ i++;
+ }
+
+ dev_kfree_skb_any(skb);
+ }
+ }
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_init_rings(struct happy_meal *hp)
+{
+ struct hmeal_init_block *hb = hp->happy_block;
+ struct net_device *dev = hp->dev;
+ int i;
+
+ HMD(("happy_meal_init_rings: counters to zero, "));
+ hp->rx_new = hp->rx_old = hp->tx_new = hp->tx_old = 0;
+
+ /* Free any skippy bufs left around in the rings. */
+ HMD(("clean, "));
+ happy_meal_clean_rings(hp);
+
+ /* Now get new skippy bufs for the receive ring. */
+ HMD(("init rxring, "));
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ struct sk_buff *skb;
+
+ skb = happy_meal_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC);
+ if (!skb) {
+ hme_write_rxd(hp, &hb->happy_meal_rxd[i], 0, 0);
+ continue;
+ }
+ hp->rx_skbs[i] = skb;
+ skb->dev = dev;
+
+ /* Because we reserve afterwards. */
+ skb_put(skb, (ETH_FRAME_LEN + RX_OFFSET));
+ hme_write_rxd(hp, &hb->happy_meal_rxd[i],
+ (RXFLAG_OWN | ((RX_BUF_ALLOC_SIZE - RX_OFFSET) << 16)),
+ hme_dma_map(hp, skb->data, RX_BUF_ALLOC_SIZE, DMA_FROMDEVICE));
+ skb_reserve(skb, RX_OFFSET);
+ }
+
+ HMD(("init txring, "));
+ for (i = 0; i < TX_RING_SIZE; i++)
+ hme_write_txd(hp, &hb->happy_meal_txd[i], 0, 0);
+
+ HMD(("done\n"));
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_begin_auto_negotiation(struct happy_meal *hp,
+ void __iomem *tregs,
+ struct ethtool_cmd *ep)
+{
+ int timeout;
+
+ /* Read all of the registers we are interested in now. */
+ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+ hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+ hp->sw_physid1 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID1);
+ hp->sw_physid2 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID2);
+
+ /* XXX Check BMSR_ANEGCAPABLE, should not be necessary though. */
+
+ hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE);
+ if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) {
+ /* Advertise everything we can support. */
+ if (hp->sw_bmsr & BMSR_10HALF)
+ hp->sw_advertise |= (ADVERTISE_10HALF);
+ else
+ hp->sw_advertise &= ~(ADVERTISE_10HALF);
+
+ if (hp->sw_bmsr & BMSR_10FULL)
+ hp->sw_advertise |= (ADVERTISE_10FULL);
+ else
+ hp->sw_advertise &= ~(ADVERTISE_10FULL);
+ if (hp->sw_bmsr & BMSR_100HALF)
+ hp->sw_advertise |= (ADVERTISE_100HALF);
+ else
+ hp->sw_advertise &= ~(ADVERTISE_100HALF);
+ if (hp->sw_bmsr & BMSR_100FULL)
+ hp->sw_advertise |= (ADVERTISE_100FULL);
+ else
+ hp->sw_advertise &= ~(ADVERTISE_100FULL);
+ happy_meal_tcvr_write(hp, tregs, MII_ADVERTISE, hp->sw_advertise);
+
+ /* XXX Currently no Happy Meal cards I know off support 100BaseT4,
+ * XXX and this is because the DP83840 does not support it, changes
+ * XXX would need to be made to the tx/rx logic in the driver as well
+ * XXX so I completely skip checking for it in the BMSR for now.
+ */
+
+#ifdef AUTO_SWITCH_DEBUG
+ ASD(("%s: Advertising [ ", hp->dev->name));
+ if (hp->sw_advertise & ADVERTISE_10HALF)
+ ASD(("10H "));
+ if (hp->sw_advertise & ADVERTISE_10FULL)
+ ASD(("10F "));
+ if (hp->sw_advertise & ADVERTISE_100HALF)
+ ASD(("100H "));
+ if (hp->sw_advertise & ADVERTISE_100FULL)
+ ASD(("100F "));
+#endif
+
+ /* Enable Auto-Negotiation, this is usually on already... */
+ hp->sw_bmcr |= BMCR_ANENABLE;
+ happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+ /* Restart it to make sure it is going. */
+ hp->sw_bmcr |= BMCR_ANRESTART;
+ happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+ /* BMCR_ANRESTART self clears when the process has begun. */
+
+ timeout = 64; /* More than enough. */
+ while (--timeout) {
+ hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+ if (!(hp->sw_bmcr & BMCR_ANRESTART))
+ break; /* got it. */
+ udelay(10);
+ }
+ if (!timeout) {
+ printk(KERN_ERR "%s: Happy Meal would not start auto negotiation "
+ "BMCR=0x%04x\n", hp->dev->name, hp->sw_bmcr);
+ printk(KERN_NOTICE "%s: Performing force link detection.\n",
+ hp->dev->name);
+ goto force_link;
+ } else {
+ hp->timer_state = arbwait;
+ }
+ } else {
+force_link:
+ /* Force the link up, trying first a particular mode.
+ * Either we are here at the request of ethtool or
+ * because the Happy Meal would not start to autoneg.
+ */
+
+ /* Disable auto-negotiation in BMCR, enable the duplex and
+ * speed setting, init the timer state machine, and fire it off.
+ */
+ if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) {
+ hp->sw_bmcr = BMCR_SPEED100;
+ } else {
+ if (ep->speed == SPEED_100)
+ hp->sw_bmcr = BMCR_SPEED100;
+ else
+ hp->sw_bmcr = 0;
+ if (ep->duplex == DUPLEX_FULL)
+ hp->sw_bmcr |= BMCR_FULLDPLX;
+ }
+ happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+ if (!is_lucent_phy(hp)) {
+ /* OK, seems we need do disable the transceiver for the first
+ * tick to make sure we get an accurate link state at the
+ * second tick.
+ */
+ hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs,
+ DP83840_CSCONFIG);
+ hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB);
+ happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG,
+ hp->sw_csconfig);
+ }
+ hp->timer_state = ltrywait;
+ }
+
+ hp->timer_ticks = 0;
+ hp->happy_timer.expires = jiffies + (12 * HZ)/10; /* 1.2 sec. */
+ hp->happy_timer.data = (unsigned long) hp;
+ hp->happy_timer.function = &happy_meal_timer;
+ add_timer(&hp->happy_timer);
+}
+
+/* hp->happy_lock must be held */
+static int happy_meal_init(struct happy_meal *hp)
+{
+ void __iomem *gregs = hp->gregs;
+ void __iomem *etxregs = hp->etxregs;
+ void __iomem *erxregs = hp->erxregs;
+ void __iomem *bregs = hp->bigmacregs;
+ void __iomem *tregs = hp->tcvregs;
+ u32 regtmp, rxcfg;
+ unsigned char *e = &hp->dev->dev_addr[0];
+
+ /* If auto-negotiation timer is running, kill it. */
+ del_timer(&hp->happy_timer);
+
+ HMD(("happy_meal_init: happy_flags[%08x] ",
+ hp->happy_flags));
+ if (!(hp->happy_flags & HFLAG_INIT)) {
+ HMD(("set HFLAG_INIT, "));
+ hp->happy_flags |= HFLAG_INIT;
+ happy_meal_get_counters(hp, bregs);
+ }
+
+ /* Stop polling. */
+ HMD(("to happy_meal_poll_stop\n"));
+ happy_meal_poll_stop(hp, tregs);
+
+ /* Stop transmitter and receiver. */
+ HMD(("happy_meal_init: to happy_meal_stop\n"));
+ happy_meal_stop(hp, gregs);
+
+ /* Alloc and reset the tx/rx descriptor chains. */
+ HMD(("happy_meal_init: to happy_meal_init_rings\n"));
+ happy_meal_init_rings(hp);
+
+ /* Shut up the MIF. */
+ HMD(("happy_meal_init: Disable all MIF irqs (old[%08x]), ",
+ hme_read32(hp, tregs + TCVR_IMASK)));
+ hme_write32(hp, tregs + TCVR_IMASK, 0xffff);
+
+ /* See if we can enable the MIF frame on this card to speak to the DP83840. */
+ if (hp->happy_flags & HFLAG_FENABLE) {
+ HMD(("use frame old[%08x], ",
+ hme_read32(hp, tregs + TCVR_CFG)));
+ hme_write32(hp, tregs + TCVR_CFG,
+ hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_BENABLE));
+ } else {
+ HMD(("use bitbang old[%08x], ",
+ hme_read32(hp, tregs + TCVR_CFG)));
+ hme_write32(hp, tregs + TCVR_CFG,
+ hme_read32(hp, tregs + TCVR_CFG) | TCV_CFG_BENABLE);
+ }
+
+ /* Check the state of the transceiver. */
+ HMD(("to happy_meal_transceiver_check\n"));
+ happy_meal_transceiver_check(hp, tregs);
+
+ /* Put the Big Mac into a sane state. */
+ HMD(("happy_meal_init: "));
+ switch(hp->tcvr_type) {
+ case none:
+ /* Cannot operate if we don't know the transceiver type! */
+ HMD(("AAIEEE no transceiver type, EAGAIN"));
+ return -EAGAIN;
+
+ case internal:
+ /* Using the MII buffers. */
+ HMD(("internal, using MII, "));
+ hme_write32(hp, bregs + BMAC_XIFCFG, 0);
+ break;
+
+ case external:
+ /* Not using the MII, disable it. */
+ HMD(("external, disable MII, "));
+ hme_write32(hp, bregs + BMAC_XIFCFG, BIGMAC_XCFG_MIIDISAB);
+ break;
+ };
+
+ if (happy_meal_tcvr_reset(hp, tregs))
+ return -EAGAIN;
+
+ /* Reset the Happy Meal Big Mac transceiver and the receiver. */
+ HMD(("tx/rx reset, "));
+ happy_meal_tx_reset(hp, bregs);
+ happy_meal_rx_reset(hp, bregs);
+
+ /* Set jam size and inter-packet gaps to reasonable defaults. */
+ HMD(("jsize/ipg1/ipg2, "));
+ hme_write32(hp, bregs + BMAC_JSIZE, DEFAULT_JAMSIZE);
+ hme_write32(hp, bregs + BMAC_IGAP1, DEFAULT_IPG1);
+ hme_write32(hp, bregs + BMAC_IGAP2, DEFAULT_IPG2);
+
+ /* Load up the MAC address and random seed. */
+ HMD(("rseed/macaddr, "));
+
+ /* The docs recommend to use the 10LSB of our MAC here. */
+ hme_write32(hp, bregs + BMAC_RSEED, ((e[5] | e[4]<<8)&0x3ff));
+
+ hme_write32(hp, bregs + BMAC_MACADDR2, ((e[4] << 8) | e[5]));
+ hme_write32(hp, bregs + BMAC_MACADDR1, ((e[2] << 8) | e[3]));
+ hme_write32(hp, bregs + BMAC_MACADDR0, ((e[0] << 8) | e[1]));
+
+ HMD(("htable, "));
+ if ((hp->dev->flags & IFF_ALLMULTI) ||
+ (hp->dev->mc_count > 64)) {
+ hme_write32(hp, bregs + BMAC_HTABLE0, 0xffff);
+ hme_write32(hp, bregs + BMAC_HTABLE1, 0xffff);
+ hme_write32(hp, bregs + BMAC_HTABLE2, 0xffff);
+ hme_write32(hp, bregs + BMAC_HTABLE3, 0xffff);
+ } else if ((hp->dev->flags & IFF_PROMISC) == 0) {
+ u16 hash_table[4];
+ struct dev_mc_list *dmi = hp->dev->mc_list;
+ char *addrs;
+ int i;
+ u32 crc;
+
+ for (i = 0; i < 4; i++)
+ hash_table[i] = 0;
+
+ for (i = 0; i < hp->dev->mc_count; i++) {
+ addrs = dmi->dmi_addr;
+ dmi = dmi->next;
+
+ if (!(*addrs & 1))
+ continue;
+
+ crc = ether_crc_le(6, addrs);
+ crc >>= 26;
+ hash_table[crc >> 4] |= 1 << (crc & 0xf);
+ }
+ hme_write32(hp, bregs + BMAC_HTABLE0, hash_table[0]);
+ hme_write32(hp, bregs + BMAC_HTABLE1, hash_table[1]);
+ hme_write32(hp, bregs + BMAC_HTABLE2, hash_table[2]);
+ hme_write32(hp, bregs + BMAC_HTABLE3, hash_table[3]);
+ } else {
+ hme_write32(hp, bregs + BMAC_HTABLE3, 0);
+ hme_write32(hp, bregs + BMAC_HTABLE2, 0);
+ hme_write32(hp, bregs + BMAC_HTABLE1, 0);
+ hme_write32(hp, bregs + BMAC_HTABLE0, 0);
+ }
+
+ /* Set the RX and TX ring ptrs. */
+ HMD(("ring ptrs rxr[%08x] txr[%08x]\n",
+ ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0)),
+ ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_txd, 0))));
+ hme_write32(hp, erxregs + ERX_RING,
+ ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0)));
+ hme_write32(hp, etxregs + ETX_RING,
+ ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_txd, 0)));
+
+ /* Parity issues in the ERX unit of some HME revisions can cause some
+ * registers to not be written unless their parity is even. Detect such
+ * lost writes and simply rewrite with a low bit set (which will be ignored
+ * since the rxring needs to be 2K aligned).
+ */
+ if (hme_read32(hp, erxregs + ERX_RING) !=
+ ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0)))
+ hme_write32(hp, erxregs + ERX_RING,
+ ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0))
+ | 0x4);
+
+ /* Set the supported burst sizes. */
+ HMD(("happy_meal_init: old[%08x] bursts<",
+ hme_read32(hp, gregs + GREG_CFG)));
+
+#ifndef __sparc__
+ /* It is always PCI and can handle 64byte bursts. */
+ hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST64);
+#else
+ if ((hp->happy_bursts & DMA_BURST64) &&
+ ((hp->happy_flags & HFLAG_PCI) != 0
+#ifdef CONFIG_SBUS
+ || sbus_can_burst64(hp->happy_dev)
+#endif
+ || 0)) {
+ u32 gcfg = GREG_CFG_BURST64;
+
+ /* I have no idea if I should set the extended
+ * transfer mode bit for Cheerio, so for now I
+ * do not. -DaveM
+ */
+#ifdef CONFIG_SBUS
+ if ((hp->happy_flags & HFLAG_PCI) == 0 &&
+ sbus_can_dma_64bit(hp->happy_dev)) {
+ sbus_set_sbus64(hp->happy_dev,
+ hp->happy_bursts);
+ gcfg |= GREG_CFG_64BIT;
+ }
+#endif
+
+ HMD(("64>"));
+ hme_write32(hp, gregs + GREG_CFG, gcfg);
+ } else if (hp->happy_bursts & DMA_BURST32) {
+ HMD(("32>"));
+ hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST32);
+ } else if (hp->happy_bursts & DMA_BURST16) {
+ HMD(("16>"));
+ hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST16);
+ } else {
+ HMD(("XXX>"));
+ hme_write32(hp, gregs + GREG_CFG, 0);
+ }
+#endif /* __sparc__ */
+
+ /* Turn off interrupts we do not want to hear. */
+ HMD((", enable global interrupts, "));
+ hme_write32(hp, gregs + GREG_IMASK,
+ (GREG_IMASK_GOTFRAME | GREG_IMASK_RCNTEXP |
+ GREG_IMASK_SENTFRAME | GREG_IMASK_TXPERR));
+
+ /* Set the transmit ring buffer size. */
+ HMD(("tx rsize=%d oreg[%08x], ", (int)TX_RING_SIZE,
+ hme_read32(hp, etxregs + ETX_RSIZE)));
+ hme_write32(hp, etxregs + ETX_RSIZE, (TX_RING_SIZE >> ETX_RSIZE_SHIFT) - 1);
+
+ /* Enable transmitter DVMA. */
+ HMD(("tx dma enable old[%08x], ",
+ hme_read32(hp, etxregs + ETX_CFG)));
+ hme_write32(hp, etxregs + ETX_CFG,
+ hme_read32(hp, etxregs + ETX_CFG) | ETX_CFG_DMAENABLE);
+
+ /* This chip really rots, for the receiver sometimes when you
+ * write to its control registers not all the bits get there
+ * properly. I cannot think of a sane way to provide complete
+ * coverage for this hardware bug yet.
+ */
+ HMD(("erx regs bug old[%08x]\n",
+ hme_read32(hp, erxregs + ERX_CFG)));
+ hme_write32(hp, erxregs + ERX_CFG, ERX_CFG_DEFAULT(RX_OFFSET));
+ regtmp = hme_read32(hp, erxregs + ERX_CFG);
+ hme_write32(hp, erxregs + ERX_CFG, ERX_CFG_DEFAULT(RX_OFFSET));
+ if (hme_read32(hp, erxregs + ERX_CFG) != ERX_CFG_DEFAULT(RX_OFFSET)) {
+ printk(KERN_ERR "happy meal: Eieee, rx config register gets greasy fries.\n");
+ printk(KERN_ERR "happy meal: Trying to set %08x, reread gives %08x\n",
+ ERX_CFG_DEFAULT(RX_OFFSET), regtmp);
+ /* XXX Should return failure here... */
+ }
+
+ /* Enable Big Mac hash table filter. */
+ HMD(("happy_meal_init: enable hash rx_cfg_old[%08x], ",
+ hme_read32(hp, bregs + BMAC_RXCFG)));
+ rxcfg = BIGMAC_RXCFG_HENABLE | BIGMAC_RXCFG_REJME;
+ if (hp->dev->flags & IFF_PROMISC)
+ rxcfg |= BIGMAC_RXCFG_PMISC;
+ hme_write32(hp, bregs + BMAC_RXCFG, rxcfg);
+
+ /* Let the bits settle in the chip. */
+ udelay(10);
+
+ /* Ok, configure the Big Mac transmitter. */
+ HMD(("BIGMAC init, "));
+ regtmp = 0;
+ if (hp->happy_flags & HFLAG_FULL)
+ regtmp |= BIGMAC_TXCFG_FULLDPLX;
+
+ /* Don't turn on the "don't give up" bit for now. It could cause hme
+ * to deadlock with the PHY if a Jabber occurs.
+ */
+ hme_write32(hp, bregs + BMAC_TXCFG, regtmp /*| BIGMAC_TXCFG_DGIVEUP*/);
+
+ /* Give up after 16 TX attempts. */
+ hme_write32(hp, bregs + BMAC_ALIMIT, 16);
+
+ /* Enable the output drivers no matter what. */
+ regtmp = BIGMAC_XCFG_ODENABLE;
+
+ /* If card can do lance mode, enable it. */
+ if (hp->happy_flags & HFLAG_LANCE)
+ regtmp |= (DEFAULT_IPG0 << 5) | BIGMAC_XCFG_LANCE;
+
+ /* Disable the MII buffers if using external transceiver. */
+ if (hp->tcvr_type == external)
+ regtmp |= BIGMAC_XCFG_MIIDISAB;
+
+ HMD(("XIF config old[%08x], ",
+ hme_read32(hp, bregs + BMAC_XIFCFG)));
+ hme_write32(hp, bregs + BMAC_XIFCFG, regtmp);
+
+ /* Start things up. */
+ HMD(("tx old[%08x] and rx [%08x] ON!\n",
+ hme_read32(hp, bregs + BMAC_TXCFG),
+ hme_read32(hp, bregs + BMAC_RXCFG)));
+ hme_write32(hp, bregs + BMAC_TXCFG,
+ hme_read32(hp, bregs + BMAC_TXCFG) | BIGMAC_TXCFG_ENABLE);
+ hme_write32(hp, bregs + BMAC_RXCFG,
+ hme_read32(hp, bregs + BMAC_RXCFG) | BIGMAC_RXCFG_ENABLE);
+
+ /* Get the autonegotiation started, and the watch timer ticking. */
+ happy_meal_begin_auto_negotiation(hp, tregs, NULL);
+
+ /* Success. */
+ return 0;
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_set_initial_advertisement(struct happy_meal *hp)
+{
+ void __iomem *tregs = hp->tcvregs;
+ void __iomem *bregs = hp->bigmacregs;
+ void __iomem *gregs = hp->gregs;
+
+ happy_meal_stop(hp, gregs);
+ hme_write32(hp, tregs + TCVR_IMASK, 0xffff);
+ if (hp->happy_flags & HFLAG_FENABLE)
+ hme_write32(hp, tregs + TCVR_CFG,
+ hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_BENABLE));
+ else
+ hme_write32(hp, tregs + TCVR_CFG,
+ hme_read32(hp, tregs + TCVR_CFG) | TCV_CFG_BENABLE);
+ happy_meal_transceiver_check(hp, tregs);
+ switch(hp->tcvr_type) {
+ case none:
+ return;
+ case internal:
+ hme_write32(hp, bregs + BMAC_XIFCFG, 0);
+ break;
+ case external:
+ hme_write32(hp, bregs + BMAC_XIFCFG, BIGMAC_XCFG_MIIDISAB);
+ break;
+ };
+ if (happy_meal_tcvr_reset(hp, tregs))
+ return;
+
+ /* Latch PHY registers as of now. */
+ hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+ hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE);
+
+ /* Advertise everything we can support. */
+ if (hp->sw_bmsr & BMSR_10HALF)
+ hp->sw_advertise |= (ADVERTISE_10HALF);
+ else
+ hp->sw_advertise &= ~(ADVERTISE_10HALF);
+
+ if (hp->sw_bmsr & BMSR_10FULL)
+ hp->sw_advertise |= (ADVERTISE_10FULL);
+ else
+ hp->sw_advertise &= ~(ADVERTISE_10FULL);
+ if (hp->sw_bmsr & BMSR_100HALF)
+ hp->sw_advertise |= (ADVERTISE_100HALF);
+ else
+ hp->sw_advertise &= ~(ADVERTISE_100HALF);
+ if (hp->sw_bmsr & BMSR_100FULL)
+ hp->sw_advertise |= (ADVERTISE_100FULL);
+ else
+ hp->sw_advertise &= ~(ADVERTISE_100FULL);
+
+ /* Update the PHY advertisement register. */
+ happy_meal_tcvr_write(hp, tregs, MII_ADVERTISE, hp->sw_advertise);
+}
+
+/* Once status is latched (by happy_meal_interrupt) it is cleared by
+ * the hardware, so we cannot re-read it and get a correct value.
+ *
+ * hp->happy_lock must be held
+ */
+static int happy_meal_is_not_so_happy(struct happy_meal *hp, u32 status)
+{
+ int reset = 0;
+
+ /* Only print messages for non-counter related interrupts. */
+ if (status & (GREG_STAT_STSTERR | GREG_STAT_TFIFO_UND |
+ GREG_STAT_MAXPKTERR | GREG_STAT_RXERR |
+ GREG_STAT_RXPERR | GREG_STAT_RXTERR | GREG_STAT_EOPERR |
+ GREG_STAT_MIFIRQ | GREG_STAT_TXEACK | GREG_STAT_TXLERR |
+ GREG_STAT_TXPERR | GREG_STAT_TXTERR | GREG_STAT_SLVERR |
+ GREG_STAT_SLVPERR))
+ printk(KERN_ERR "%s: Error interrupt for happy meal, status = %08x\n",
+ hp->dev->name, status);
+
+ if (status & GREG_STAT_RFIFOVF) {
+ /* Receive FIFO overflow is harmless and the hardware will take
+ care of it, just some packets are lost. Who cares. */
+ printk(KERN_DEBUG "%s: Happy Meal receive FIFO overflow.\n", hp->dev->name);
+ }
+
+ if (status & GREG_STAT_STSTERR) {
+ /* BigMAC SQE link test failed. */
+ printk(KERN_ERR "%s: Happy Meal BigMAC SQE test failed.\n", hp->dev->name);
+ reset = 1;
+ }
+
+ if (status & GREG_STAT_TFIFO_UND) {
+ /* Transmit FIFO underrun, again DMA error likely. */
+ printk(KERN_ERR "%s: Happy Meal transmitter FIFO underrun, DMA error.\n",
+ hp->dev->name);
+ reset = 1;
+ }
+
+ if (status & GREG_STAT_MAXPKTERR) {
+ /* Driver error, tried to transmit something larger
+ * than ethernet max mtu.
+ */
+ printk(KERN_ERR "%s: Happy Meal MAX Packet size error.\n", hp->dev->name);
+ reset = 1;
+ }
+
+ if (status & GREG_STAT_NORXD) {
+ /* This is harmless, it just means the system is
+ * quite loaded and the incoming packet rate was
+ * faster than the interrupt handler could keep up
+ * with.
+ */
+ printk(KERN_INFO "%s: Happy Meal out of receive "
+ "descriptors, packet dropped.\n",
+ hp->dev->name);
+ }
+
+ if (status & (GREG_STAT_RXERR|GREG_STAT_RXPERR|GREG_STAT_RXTERR)) {
+ /* All sorts of DMA receive errors. */
+ printk(KERN_ERR "%s: Happy Meal rx DMA errors [ ", hp->dev->name);
+ if (status & GREG_STAT_RXERR)
+ printk("GenericError ");
+ if (status & GREG_STAT_RXPERR)
+ printk("ParityError ");
+ if (status & GREG_STAT_RXTERR)
+ printk("RxTagBotch ");
+ printk("]\n");
+ reset = 1;
+ }
+
+ if (status & GREG_STAT_EOPERR) {
+ /* Driver bug, didn't set EOP bit in tx descriptor given
+ * to the happy meal.
+ */
+ printk(KERN_ERR "%s: EOP not set in happy meal transmit descriptor!\n",
+ hp->dev->name);
+ reset = 1;
+ }
+
+ if (status & GREG_STAT_MIFIRQ) {
+ /* MIF signalled an interrupt, were we polling it? */
+ printk(KERN_ERR "%s: Happy Meal MIF interrupt.\n", hp->dev->name);
+ }
+
+ if (status &
+ (GREG_STAT_TXEACK|GREG_STAT_TXLERR|GREG_STAT_TXPERR|GREG_STAT_TXTERR)) {
+ /* All sorts of transmit DMA errors. */
+ printk(KERN_ERR "%s: Happy Meal tx DMA errors [ ", hp->dev->name);
+ if (status & GREG_STAT_TXEACK)
+ printk("GenericError ");
+ if (status & GREG_STAT_TXLERR)
+ printk("LateError ");
+ if (status & GREG_STAT_TXPERR)
+ printk("ParityErro ");
+ if (status & GREG_STAT_TXTERR)
+ printk("TagBotch ");
+ printk("]\n");
+ reset = 1;
+ }
+
+ if (status & (GREG_STAT_SLVERR|GREG_STAT_SLVPERR)) {
+ /* Bus or parity error when cpu accessed happy meal registers
+ * or it's internal FIFO's. Should never see this.
+ */
+ printk(KERN_ERR "%s: Happy Meal register access SBUS slave (%s) error.\n",
+ hp->dev->name,
+ (status & GREG_STAT_SLVPERR) ? "parity" : "generic");
+ reset = 1;
+ }
+
+ if (reset) {
+ printk(KERN_NOTICE "%s: Resetting...\n", hp->dev->name);
+ happy_meal_init(hp);
+ return 1;
+ }
+ return 0;
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_mif_interrupt(struct happy_meal *hp)
+{
+ void __iomem *tregs = hp->tcvregs;
+
+ printk(KERN_INFO "%s: Link status change.\n", hp->dev->name);
+ hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+ hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA);
+
+ /* Use the fastest transmission protocol possible. */
+ if (hp->sw_lpa & LPA_100FULL) {
+ printk(KERN_INFO "%s: Switching to 100Mbps at full duplex.", hp->dev->name);
+ hp->sw_bmcr |= (BMCR_FULLDPLX | BMCR_SPEED100);
+ } else if (hp->sw_lpa & LPA_100HALF) {
+ printk(KERN_INFO "%s: Switching to 100MBps at half duplex.", hp->dev->name);
+ hp->sw_bmcr |= BMCR_SPEED100;
+ } else if (hp->sw_lpa & LPA_10FULL) {
+ printk(KERN_INFO "%s: Switching to 10MBps at full duplex.", hp->dev->name);
+ hp->sw_bmcr |= BMCR_FULLDPLX;
+ } else {
+ printk(KERN_INFO "%s: Using 10Mbps at half duplex.", hp->dev->name);
+ }
+ happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+ /* Finally stop polling and shut up the MIF. */
+ happy_meal_poll_stop(hp, tregs);
+}
+
+#ifdef TXDEBUG
+#define TXD(x) printk x
+#else
+#define TXD(x)
+#endif
+
+/* hp->happy_lock must be held */
+static void happy_meal_tx(struct happy_meal *hp)
+{
+ struct happy_meal_txd *txbase = &hp->happy_block->happy_meal_txd[0];
+ struct happy_meal_txd *this;
+ struct net_device *dev = hp->dev;
+ int elem;
+
+ elem = hp->tx_old;
+ TXD(("TX<"));
+ while (elem != hp->tx_new) {
+ struct sk_buff *skb;
+ u32 flags, dma_addr, dma_len;
+ int frag;
+
+ TXD(("[%d]", elem));
+ this = &txbase[elem];
+ flags = hme_read_desc32(hp, &this->tx_flags);
+ if (flags & TXFLAG_OWN)
+ break;
+ skb = hp->tx_skbs[elem];
+ if (skb_shinfo(skb)->nr_frags) {
+ int last;
+
+ last = elem + skb_shinfo(skb)->nr_frags;
+ last &= (TX_RING_SIZE - 1);
+ flags = hme_read_desc32(hp, &txbase[last].tx_flags);
+ if (flags & TXFLAG_OWN)
+ break;
+ }
+ hp->tx_skbs[elem] = NULL;
+ hp->net_stats.tx_bytes += skb->len;
+
+ for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
+ dma_addr = hme_read_desc32(hp, &this->tx_addr);
+ dma_len = hme_read_desc32(hp, &this->tx_flags);
+
+ dma_len &= TXFLAG_SIZE;
+ hme_dma_unmap(hp, dma_addr, dma_len, DMA_TODEVICE);
+
+ elem = NEXT_TX(elem);
+ this = &txbase[elem];
+ }
+
+ dev_kfree_skb_irq(skb);
+ hp->net_stats.tx_packets++;
+ }
+ hp->tx_old = elem;
+ TXD((">"));
+
+ if (netif_queue_stopped(dev) &&
+ TX_BUFFS_AVAIL(hp) > (MAX_SKB_FRAGS + 1))
+ netif_wake_queue(dev);
+}
+
+#ifdef RXDEBUG
+#define RXD(x) printk x
+#else
+#define RXD(x)
+#endif
+
+/* Originally I used to handle the allocation failure by just giving back just
+ * that one ring buffer to the happy meal. Problem is that usually when that
+ * condition is triggered, the happy meal expects you to do something reasonable
+ * with all of the packets it has DMA'd in. So now I just drop the entire
+ * ring when we cannot get a new skb and give them all back to the happy meal,
+ * maybe things will be "happier" now.
+ *
+ * hp->happy_lock must be held
+ */
+static void happy_meal_rx(struct happy_meal *hp, struct net_device *dev)
+{
+ struct happy_meal_rxd *rxbase = &hp->happy_block->happy_meal_rxd[0];
+ struct happy_meal_rxd *this;
+ int elem = hp->rx_new, drops = 0;
+ u32 flags;
+
+ RXD(("RX<"));
+ this = &rxbase[elem];
+ while (!((flags = hme_read_desc32(hp, &this->rx_flags)) & RXFLAG_OWN)) {
+ struct sk_buff *skb;
+ int len = flags >> 16;
+ u16 csum = flags & RXFLAG_CSUM;
+ u32 dma_addr = hme_read_desc32(hp, &this->rx_addr);
+
+ RXD(("[%d ", elem));
+
+ /* Check for errors. */
+ if ((len < ETH_ZLEN) || (flags & RXFLAG_OVERFLOW)) {
+ RXD(("ERR(%08x)]", flags));
+ hp->net_stats.rx_errors++;
+ if (len < ETH_ZLEN)
+ hp->net_stats.rx_length_errors++;
+ if (len & (RXFLAG_OVERFLOW >> 16)) {
+ hp->net_stats.rx_over_errors++;
+ hp->net_stats.rx_fifo_errors++;
+ }
+
+ /* Return it to the Happy meal. */
+ drop_it:
+ hp->net_stats.rx_dropped++;
+ hme_write_rxd(hp, this,
+ (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)),
+ dma_addr);
+ goto next;
+ }
+ skb = hp->rx_skbs[elem];
+ if (len > RX_COPY_THRESHOLD) {
+ struct sk_buff *new_skb;
+
+ /* Now refill the entry, if we can. */
+ new_skb = happy_meal_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC);
+ if (new_skb == NULL) {
+ drops++;
+ goto drop_it;
+ }
+ hme_dma_unmap(hp, dma_addr, RX_BUF_ALLOC_SIZE, DMA_FROMDEVICE);
+ hp->rx_skbs[elem] = new_skb;
+ new_skb->dev = dev;
+ skb_put(new_skb, (ETH_FRAME_LEN + RX_OFFSET));
+ hme_write_rxd(hp, this,
+ (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)),
+ hme_dma_map(hp, new_skb->data, RX_BUF_ALLOC_SIZE, DMA_FROMDEVICE));
+ skb_reserve(new_skb, RX_OFFSET);
+
+ /* Trim the original skb for the netif. */
+ skb_trim(skb, len);
+ } else {
+ struct sk_buff *copy_skb = dev_alloc_skb(len + 2);
+
+ if (copy_skb == NULL) {
+ drops++;
+ goto drop_it;
+ }
+
+ copy_skb->dev = dev;
+ skb_reserve(copy_skb, 2);
+ skb_put(copy_skb, len);
+ hme_dma_sync_for_cpu(hp, dma_addr, len, DMA_FROMDEVICE);
+ memcpy(copy_skb->data, skb->data, len);
+ hme_dma_sync_for_device(hp, dma_addr, len, DMA_FROMDEVICE);
+
+ /* Reuse original ring buffer. */
+ hme_write_rxd(hp, this,
+ (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)),
+ dma_addr);
+
+ skb = copy_skb;
+ }
+
+ /* This card is _fucking_ hot... */
+ skb->csum = ntohs(csum ^ 0xffff);
+ skb->ip_summed = CHECKSUM_HW;
+
+ RXD(("len=%d csum=%4x]", len, csum));
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+
+ dev->last_rx = jiffies;
+ hp->net_stats.rx_packets++;
+ hp->net_stats.rx_bytes += len;
+ next:
+ elem = NEXT_RX(elem);
+ this = &rxbase[elem];
+ }
+ hp->rx_new = elem;
+ if (drops)
+ printk(KERN_INFO "%s: Memory squeeze, deferring packet.\n", hp->dev->name);
+ RXD((">"));
+}
+
+static irqreturn_t happy_meal_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct happy_meal *hp = dev->priv;
+ u32 happy_status = hme_read32(hp, hp->gregs + GREG_STAT);
+
+ HMD(("happy_meal_interrupt: status=%08x ", happy_status));
+
+ spin_lock(&hp->happy_lock);
+
+ if (happy_status & GREG_STAT_ERRORS) {
+ HMD(("ERRORS "));
+ if (happy_meal_is_not_so_happy(hp, /* un- */ happy_status))
+ goto out;
+ }
+
+ if (happy_status & GREG_STAT_MIFIRQ) {
+ HMD(("MIFIRQ "));
+ happy_meal_mif_interrupt(hp);
+ }
+
+ if (happy_status & GREG_STAT_TXALL) {
+ HMD(("TXALL "));
+ happy_meal_tx(hp);
+ }
+
+ if (happy_status & GREG_STAT_RXTOHOST) {
+ HMD(("RXTOHOST "));
+ happy_meal_rx(hp, dev);
+ }
+
+ HMD(("done\n"));
+out:
+ spin_unlock(&hp->happy_lock);
+
+ return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_SBUS
+static irqreturn_t quattro_sbus_interrupt(int irq, void *cookie, struct pt_regs *ptregs)
+{
+ struct quattro *qp = (struct quattro *) cookie;
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ struct net_device *dev = qp->happy_meals[i];
+ struct happy_meal *hp = dev->priv;
+ u32 happy_status = hme_read32(hp, hp->gregs + GREG_STAT);
+
+ HMD(("quattro_interrupt: status=%08x ", happy_status));
+
+ if (!(happy_status & (GREG_STAT_ERRORS |
+ GREG_STAT_MIFIRQ |
+ GREG_STAT_TXALL |
+ GREG_STAT_RXTOHOST)))
+ continue;
+
+ spin_lock(&hp->happy_lock);
+
+ if (happy_status & GREG_STAT_ERRORS) {
+ HMD(("ERRORS "));
+ if (happy_meal_is_not_so_happy(hp, happy_status))
+ goto next;
+ }
+
+ if (happy_status & GREG_STAT_MIFIRQ) {
+ HMD(("MIFIRQ "));
+ happy_meal_mif_interrupt(hp);
+ }
+
+ if (happy_status & GREG_STAT_TXALL) {
+ HMD(("TXALL "));
+ happy_meal_tx(hp);
+ }
+
+ if (happy_status & GREG_STAT_RXTOHOST) {
+ HMD(("RXTOHOST "));
+ happy_meal_rx(hp, dev);
+ }
+
+ next:
+ spin_unlock(&hp->happy_lock);
+ }
+ HMD(("done\n"));
+
+ return IRQ_HANDLED;
+}
+#endif
+
+static int happy_meal_open(struct net_device *dev)
+{
+ struct happy_meal *hp = dev->priv;
+ int res;
+
+ HMD(("happy_meal_open: "));
+
+ /* On SBUS Quattro QFE cards, all hme interrupts are concentrated
+ * into a single source which we register handling at probe time.
+ */
+ if ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO) {
+ if (request_irq(dev->irq, &happy_meal_interrupt,
+ SA_SHIRQ, dev->name, (void *)dev)) {
+ HMD(("EAGAIN\n"));
+#ifdef __sparc__
+ printk(KERN_ERR "happy_meal(SBUS): Can't order irq %s to go.\n",
+ __irq_itoa(dev->irq));
+#else
+ printk(KERN_ERR "happy_meal(SBUS): Can't order irq %d to go.\n",
+ dev->irq);
+#endif
+
+ return -EAGAIN;
+ }
+ }
+
+ HMD(("to happy_meal_init\n"));
+
+ spin_lock_irq(&hp->happy_lock);
+ res = happy_meal_init(hp);
+ spin_unlock_irq(&hp->happy_lock);
+
+ if (res && ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO))
+ free_irq(dev->irq, dev);
+ return res;
+}
+
+static int happy_meal_close(struct net_device *dev)
+{
+ struct happy_meal *hp = dev->priv;
+
+ spin_lock_irq(&hp->happy_lock);
+ happy_meal_stop(hp, hp->gregs);
+ happy_meal_clean_rings(hp);
+
+ /* If auto-negotiation timer is running, kill it. */
+ del_timer(&hp->happy_timer);
+
+ spin_unlock_irq(&hp->happy_lock);
+
+ /* On Quattro QFE cards, all hme interrupts are concentrated
+ * into a single source which we register handling at probe
+ * time and never unregister.
+ */
+ if ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO)
+ free_irq(dev->irq, dev);
+
+ return 0;
+}
+
+#ifdef SXDEBUG
+#define SXD(x) printk x
+#else
+#define SXD(x)
+#endif
+
+static void happy_meal_tx_timeout(struct net_device *dev)
+{
+ struct happy_meal *hp = dev->priv;
+
+ printk (KERN_ERR "%s: transmit timed out, resetting\n", dev->name);
+ tx_dump_log();
+ printk (KERN_ERR "%s: Happy Status %08x TX[%08x:%08x]\n", dev->name,
+ hme_read32(hp, hp->gregs + GREG_STAT),
+ hme_read32(hp, hp->etxregs + ETX_CFG),
+ hme_read32(hp, hp->bigmacregs + BMAC_TXCFG));
+
+ spin_lock_irq(&hp->happy_lock);
+ happy_meal_init(hp);
+ spin_unlock_irq(&hp->happy_lock);
+
+ netif_wake_queue(dev);
+}
+
+static int happy_meal_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct happy_meal *hp = dev->priv;
+ int entry;
+ u32 tx_flags;
+
+ tx_flags = TXFLAG_OWN;
+ if (skb->ip_summed == CHECKSUM_HW) {
+ u32 csum_start_off, csum_stuff_off;
+
+ csum_start_off = (u32) (skb->h.raw - skb->data);
+ csum_stuff_off = (u32) ((skb->h.raw + skb->csum) - skb->data);
+
+ tx_flags = (TXFLAG_OWN | TXFLAG_CSENABLE |
+ ((csum_start_off << 14) & TXFLAG_CSBUFBEGIN) |
+ ((csum_stuff_off << 20) & TXFLAG_CSLOCATION));
+ }
+
+ spin_lock_irq(&hp->happy_lock);
+
+ if (TX_BUFFS_AVAIL(hp) <= (skb_shinfo(skb)->nr_frags + 1)) {
+ netif_stop_queue(dev);
+ spin_unlock_irq(&hp->happy_lock);
+ printk(KERN_ERR "%s: BUG! Tx Ring full when queue awake!\n",
+ dev->name);
+ return 1;
+ }
+
+ entry = hp->tx_new;
+ SXD(("SX<l[%d]e[%d]>", len, entry));
+ hp->tx_skbs[entry] = skb;
+
+ if (skb_shinfo(skb)->nr_frags == 0) {
+ u32 mapping, len;
+
+ len = skb->len;
+ mapping = hme_dma_map(hp, skb->data, len, DMA_TODEVICE);
+ tx_flags |= (TXFLAG_SOP | TXFLAG_EOP);
+ hme_write_txd(hp, &hp->happy_block->happy_meal_txd[entry],
+ (tx_flags | (len & TXFLAG_SIZE)),
+ mapping);
+ entry = NEXT_TX(entry);
+ } else {
+ u32 first_len, first_mapping;
+ int frag, first_entry = entry;
+
+ /* We must give this initial chunk to the device last.
+ * Otherwise we could race with the device.
+ */
+ first_len = skb_headlen(skb);
+ first_mapping = hme_dma_map(hp, skb->data, first_len, DMA_TODEVICE);
+ entry = NEXT_TX(entry);
+
+ for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
+ skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
+ u32 len, mapping, this_txflags;
+
+ len = this_frag->size;
+ mapping = hme_dma_map(hp,
+ ((void *) page_address(this_frag->page) +
+ this_frag->page_offset),
+ len, DMA_TODEVICE);
+ this_txflags = tx_flags;
+ if (frag == skb_shinfo(skb)->nr_frags - 1)
+ this_txflags |= TXFLAG_EOP;
+ hme_write_txd(hp, &hp->happy_block->happy_meal_txd[entry],
+ (this_txflags | (len & TXFLAG_SIZE)),
+ mapping);
+ entry = NEXT_TX(entry);
+ }
+ hme_write_txd(hp, &hp->happy_block->happy_meal_txd[first_entry],
+ (tx_flags | TXFLAG_SOP | (first_len & TXFLAG_SIZE)),
+ first_mapping);
+ }
+
+ hp->tx_new = entry;
+
+ if (TX_BUFFS_AVAIL(hp) <= (MAX_SKB_FRAGS + 1))
+ netif_stop_queue(dev);
+
+ /* Get it going. */
+ hme_write32(hp, hp->etxregs + ETX_PENDING, ETX_TP_DMAWAKEUP);
+
+ spin_unlock_irq(&hp->happy_lock);
+
+ dev->trans_start = jiffies;
+
+ tx_add_log(hp, TXLOG_ACTION_TXMIT, 0);
+ return 0;
+}
+
+static struct net_device_stats *happy_meal_get_stats(struct net_device *dev)
+{
+ struct happy_meal *hp = dev->priv;
+
+ spin_lock_irq(&hp->happy_lock);
+ happy_meal_get_counters(hp, hp->bigmacregs);
+ spin_unlock_irq(&hp->happy_lock);
+
+ return &hp->net_stats;
+}
+
+static void happy_meal_set_multicast(struct net_device *dev)
+{
+ struct happy_meal *hp = dev->priv;
+ void __iomem *bregs = hp->bigmacregs;
+ struct dev_mc_list *dmi = dev->mc_list;
+ char *addrs;
+ int i;
+ u32 crc;
+
+ spin_lock_irq(&hp->happy_lock);
+
+ netif_stop_queue(dev);
+
+ if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 64)) {
+ hme_write32(hp, bregs + BMAC_HTABLE0, 0xffff);
+ hme_write32(hp, bregs + BMAC_HTABLE1, 0xffff);
+ hme_write32(hp, bregs + BMAC_HTABLE2, 0xffff);
+ hme_write32(hp, bregs + BMAC_HTABLE3, 0xffff);
+ } else if (dev->flags & IFF_PROMISC) {
+ hme_write32(hp, bregs + BMAC_RXCFG,
+ hme_read32(hp, bregs + BMAC_RXCFG) | BIGMAC_RXCFG_PMISC);
+ } else {
+ u16 hash_table[4];
+
+ for (i = 0; i < 4; i++)
+ hash_table[i] = 0;
+
+ for (i = 0; i < dev->mc_count; i++) {
+ addrs = dmi->dmi_addr;
+ dmi = dmi->next;
+
+ if (!(*addrs & 1))
+ continue;
+
+ crc = ether_crc_le(6, addrs);
+ crc >>= 26;
+ hash_table[crc >> 4] |= 1 << (crc & 0xf);
+ }
+ hme_write32(hp, bregs + BMAC_HTABLE0, hash_table[0]);
+ hme_write32(hp, bregs + BMAC_HTABLE1, hash_table[1]);
+ hme_write32(hp, bregs + BMAC_HTABLE2, hash_table[2]);
+ hme_write32(hp, bregs + BMAC_HTABLE3, hash_table[3]);
+ }
+
+ netif_wake_queue(dev);
+
+ spin_unlock_irq(&hp->happy_lock);
+}
+
+/* Ethtool support... */
+static int hme_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct happy_meal *hp = dev->priv;
+
+ cmd->supported =
+ (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
+ SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
+ SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII);
+
+ /* XXX hardcoded stuff for now */
+ cmd->port = PORT_TP; /* XXX no MII support */
+ cmd->transceiver = XCVR_INTERNAL; /* XXX no external xcvr support */
+ cmd->phy_address = 0; /* XXX fixed PHYAD */
+
+ /* Record PHY settings. */
+ spin_lock_irq(&hp->happy_lock);
+ hp->sw_bmcr = happy_meal_tcvr_read(hp, hp->tcvregs, MII_BMCR);
+ hp->sw_lpa = happy_meal_tcvr_read(hp, hp->tcvregs, MII_LPA);
+ spin_unlock_irq(&hp->happy_lock);
+
+ if (hp->sw_bmcr & BMCR_ANENABLE) {
+ cmd->autoneg = AUTONEG_ENABLE;
+ cmd->speed =
+ (hp->sw_lpa & (LPA_100HALF | LPA_100FULL)) ?
+ SPEED_100 : SPEED_10;
+ if (cmd->speed == SPEED_100)
+ cmd->duplex =
+ (hp->sw_lpa & (LPA_100FULL)) ?
+ DUPLEX_FULL : DUPLEX_HALF;
+ else
+ cmd->duplex =
+ (hp->sw_lpa & (LPA_10FULL)) ?
+ DUPLEX_FULL : DUPLEX_HALF;
+ } else {
+ cmd->autoneg = AUTONEG_DISABLE;
+ cmd->speed =
+ (hp->sw_bmcr & BMCR_SPEED100) ?
+ SPEED_100 : SPEED_10;
+ cmd->duplex =
+ (hp->sw_bmcr & BMCR_FULLDPLX) ?
+ DUPLEX_FULL : DUPLEX_HALF;
+ }
+ return 0;
+}
+
+static int hme_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct happy_meal *hp = dev->priv;
+
+ /* Verify the settings we care about. */
+ if (cmd->autoneg != AUTONEG_ENABLE &&
+ cmd->autoneg != AUTONEG_DISABLE)
+ return -EINVAL;
+ if (cmd->autoneg == AUTONEG_DISABLE &&
+ ((cmd->speed != SPEED_100 &&
+ cmd->speed != SPEED_10) ||
+ (cmd->duplex != DUPLEX_HALF &&
+ cmd->duplex != DUPLEX_FULL)))
+ return -EINVAL;
+
+ /* Ok, do it to it. */
+ spin_lock_irq(&hp->happy_lock);
+ del_timer(&hp->happy_timer);
+ happy_meal_begin_auto_negotiation(hp, hp->tcvregs, cmd);
+ spin_unlock_irq(&hp->happy_lock);
+
+ return 0;
+}
+
+static void hme_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+ struct happy_meal *hp = dev->priv;
+
+ strcpy(info->driver, "sunhme");
+ strcpy(info->version, "2.02");
+ if (hp->happy_flags & HFLAG_PCI) {
+ struct pci_dev *pdev = hp->happy_dev;
+ strcpy(info->bus_info, pci_name(pdev));
+ }
+#ifdef CONFIG_SBUS
+ else {
+ struct sbus_dev *sdev = hp->happy_dev;
+ sprintf(info->bus_info, "SBUS:%d",
+ sdev->slot);
+ }
+#endif
+}
+
+static u32 hme_get_link(struct net_device *dev)
+{
+ struct happy_meal *hp = dev->priv;
+
+ spin_lock_irq(&hp->happy_lock);
+ hp->sw_bmcr = happy_meal_tcvr_read(hp, hp->tcvregs, MII_BMCR);
+ spin_unlock_irq(&hp->happy_lock);
+
+ return (hp->sw_bmsr & BMSR_LSTATUS);
+}
+
+static struct ethtool_ops hme_ethtool_ops = {
+ .get_settings = hme_get_settings,
+ .set_settings = hme_set_settings,
+ .get_drvinfo = hme_get_drvinfo,
+ .get_link = hme_get_link,
+};
+
+static int hme_version_printed;
+
+#ifdef CONFIG_SBUS
+void __init quattro_get_ranges(struct quattro *qp)
+{
+ struct sbus_dev *sdev = qp->quattro_dev;
+ int err;
+
+ err = prom_getproperty(sdev->prom_node,
+ "ranges",
+ (char *)&qp->ranges[0],
+ sizeof(qp->ranges));
+ if (err == 0 || err == -1) {
+ qp->nranges = 0;
+ return;
+ }
+ qp->nranges = (err / sizeof(struct linux_prom_ranges));
+}
+
+static void __init quattro_apply_ranges(struct quattro *qp, struct happy_meal *hp)
+{
+ struct sbus_dev *sdev = hp->happy_dev;
+ int rng;
+
+ for (rng = 0; rng < qp->nranges; rng++) {
+ struct linux_prom_ranges *rngp = &qp->ranges[rng];
+ int reg;
+
+ for (reg = 0; reg < 5; reg++) {
+ if (sdev->reg_addrs[reg].which_io ==
+ rngp->ot_child_space)
+ break;
+ }
+ if (reg == 5)
+ continue;
+
+ sdev->reg_addrs[reg].which_io = rngp->ot_parent_space;
+ sdev->reg_addrs[reg].phys_addr += rngp->ot_parent_base;
+ }
+}
+
+/* Given a happy meal sbus device, find it's quattro parent.
+ * If none exist, allocate and return a new one.
+ *
+ * Return NULL on failure.
+ */
+static struct quattro * __init quattro_sbus_find(struct sbus_dev *goal_sdev)
+{
+ struct sbus_bus *sbus;
+ struct sbus_dev *sdev;
+ struct quattro *qp;
+ int i;
+
+ if (qfe_sbus_list == NULL)
+ goto found;
+
+ for (qp = qfe_sbus_list; qp != NULL; qp = qp->next) {
+ for (i = 0, sdev = qp->quattro_dev;
+ (sdev != NULL) && (i < 4);
+ sdev = sdev->next, i++) {
+ if (sdev == goal_sdev)
+ return qp;
+ }
+ }
+ for_each_sbus(sbus) {
+ for_each_sbusdev(sdev, sbus) {
+ if (sdev == goal_sdev)
+ goto found;
+ }
+ }
+
+ /* Cannot find quattro parent, fail. */
+ return NULL;
+
+found:
+ qp = kmalloc(sizeof(struct quattro), GFP_KERNEL);
+ if (qp != NULL) {
+ int i;
+
+ for (i = 0; i < 4; i++)
+ qp->happy_meals[i] = NULL;
+
+ qp->quattro_dev = goal_sdev;
+ qp->next = qfe_sbus_list;
+ qfe_sbus_list = qp;
+ quattro_get_ranges(qp);
+ }
+ return qp;
+}
+
+/* After all quattro cards have been probed, we call these functions
+ * to register the IRQ handlers.
+ */
+static void __init quattro_sbus_register_irqs(void)
+{
+ struct quattro *qp;
+
+ for (qp = qfe_sbus_list; qp != NULL; qp = qp->next) {
+ struct sbus_dev *sdev = qp->quattro_dev;
+ int err;
+
+ err = request_irq(sdev->irqs[0],
+ quattro_sbus_interrupt,
+ SA_SHIRQ, "Quattro",
+ qp);
+ if (err != 0) {
+ printk(KERN_ERR "Quattro: Fatal IRQ registery error %d.\n", err);
+ panic("QFE request irq");
+ }
+ }
+}
+#endif /* CONFIG_SBUS */
+
+#ifdef CONFIG_PCI
+static struct quattro * __init quattro_pci_find(struct pci_dev *pdev)
+{
+ struct pci_dev *bdev = pdev->bus->self;
+ struct quattro *qp;
+
+ if (!bdev) return NULL;
+ for (qp = qfe_pci_list; qp != NULL; qp = qp->next) {
+ struct pci_dev *qpdev = qp->quattro_dev;
+
+ if (qpdev == bdev)
+ return qp;
+ }
+ qp = kmalloc(sizeof(struct quattro), GFP_KERNEL);
+ if (qp != NULL) {
+ int i;
+
+ for (i = 0; i < 4; i++)
+ qp->happy_meals[i] = NULL;
+
+ qp->quattro_dev = bdev;
+ qp->next = qfe_pci_list;
+ qfe_pci_list = qp;
+
+ /* No range tricks necessary on PCI. */
+ qp->nranges = 0;
+ }
+ return qp;
+}
+#endif /* CONFIG_PCI */
+
+#ifdef CONFIG_SBUS
+static int __init happy_meal_sbus_init(struct sbus_dev *sdev, int is_qfe)
+{
+ struct quattro *qp = NULL;
+ struct happy_meal *hp;
+ struct net_device *dev;
+ int i, qfe_slot = -1;
+ int err = -ENODEV;
+
+ if (is_qfe) {
+ qp = quattro_sbus_find(sdev);
+ if (qp == NULL)
+ goto err_out;
+ for (qfe_slot = 0; qfe_slot < 4; qfe_slot++)
+ if (qp->happy_meals[qfe_slot] == NULL)
+ break;
+ if (qfe_slot == 4)
+ goto err_out;
+ }
+
+ err = -ENOMEM;
+ dev = alloc_etherdev(sizeof(struct happy_meal));
+ if (!dev)
+ goto err_out;
+ SET_MODULE_OWNER(dev);
+
+ if (hme_version_printed++ == 0)
+ printk(KERN_INFO "%s", version);
+
+ /* If user did not specify a MAC address specifically, use
+ * the Quattro local-mac-address property...
+ */
+ for (i = 0; i < 6; i++) {
+ if (macaddr[i] != 0)
+ break;
+ }
+ if (i < 6) { /* a mac address was given */
+ for (i = 0; i < 6; i++)
+ dev->dev_addr[i] = macaddr[i];
+ macaddr[5]++;
+ } else if (qfe_slot != -1 &&
+ prom_getproplen(sdev->prom_node,
+ "local-mac-address") == 6) {
+ prom_getproperty(sdev->prom_node, "local-mac-address",
+ dev->dev_addr, 6);
+ } else {
+ memcpy(dev->dev_addr, idprom->id_ethaddr, 6);
+ }
+
+ hp = dev->priv;
+
+ hp->happy_dev = sdev;
+
+ spin_lock_init(&hp->happy_lock);
+
+ err = -ENODEV;
+ if (sdev->num_registers != 5) {
+ printk(KERN_ERR "happymeal: Device does not have 5 regs, it has %d.\n",
+ sdev->num_registers);
+ printk(KERN_ERR "happymeal: Would you like that for here or to go?\n");
+ goto err_out_free_netdev;
+ }
+
+ if (qp != NULL) {
+ hp->qfe_parent = qp;
+ hp->qfe_ent = qfe_slot;
+ qp->happy_meals[qfe_slot] = dev;
+ quattro_apply_ranges(qp, hp);
+ }
+
+ hp->gregs = sbus_ioremap(&sdev->resource[0], 0,
+ GREG_REG_SIZE, "HME Global Regs");
+ if (!hp->gregs) {
+ printk(KERN_ERR "happymeal: Cannot map Happy Meal global registers.\n");
+ goto err_out_free_netdev;
+ }
+
+ hp->etxregs = sbus_ioremap(&sdev->resource[1], 0,
+ ETX_REG_SIZE, "HME TX Regs");
+ if (!hp->etxregs) {
+ printk(KERN_ERR "happymeal: Cannot map Happy Meal MAC Transmit registers.\n");
+ goto err_out_iounmap;
+ }
+
+ hp->erxregs = sbus_ioremap(&sdev->resource[2], 0,
+ ERX_REG_SIZE, "HME RX Regs");
+ if (!hp->erxregs) {
+ printk(KERN_ERR "happymeal: Cannot map Happy Meal MAC Receive registers.\n");
+ goto err_out_iounmap;
+ }
+
+ hp->bigmacregs = sbus_ioremap(&sdev->resource[3], 0,
+ BMAC_REG_SIZE, "HME BIGMAC Regs");
+ if (!hp->bigmacregs) {
+ printk(KERN_ERR "happymeal: Cannot map Happy Meal BIGMAC registers.\n");
+ goto err_out_iounmap;
+ }
+
+ hp->tcvregs = sbus_ioremap(&sdev->resource[4], 0,
+ TCVR_REG_SIZE, "HME Tranceiver Regs");
+ if (!hp->tcvregs) {
+ printk(KERN_ERR "happymeal: Cannot map Happy Meal Tranceiver registers.\n");
+ goto err_out_iounmap;
+ }
+
+ hp->hm_revision = prom_getintdefault(sdev->prom_node, "hm-rev", 0xff);
+ if (hp->hm_revision == 0xff)
+ hp->hm_revision = 0xa0;
+
+ /* Now enable the feature flags we can. */
+ if (hp->hm_revision == 0x20 || hp->hm_revision == 0x21)
+ hp->happy_flags = HFLAG_20_21;
+ else if (hp->hm_revision != 0xa0)
+ hp->happy_flags = HFLAG_NOT_A0;
+
+ if (qp != NULL)
+ hp->happy_flags |= HFLAG_QUATTRO;
+
+ /* Get the supported DVMA burst sizes from our Happy SBUS. */
+ hp->happy_bursts = prom_getintdefault(sdev->bus->prom_node,
+ "burst-sizes", 0x00);
+
+ hp->happy_block = sbus_alloc_consistent(hp->happy_dev,
+ PAGE_SIZE,
+ &hp->hblock_dvma);
+ err = -ENOMEM;
+ if (!hp->happy_block) {
+ printk(KERN_ERR "happymeal: Cannot allocate descriptors.\n");
+ goto err_out_iounmap;
+ }
+
+ /* Force check of the link first time we are brought up. */
+ hp->linkcheck = 0;
+
+ /* Force timer state to 'asleep' with count of zero. */
+ hp->timer_state = asleep;
+ hp->timer_ticks = 0;
+
+ init_timer(&hp->happy_timer);
+
+ hp->dev = dev;
+ dev->open = &happy_meal_open;
+ dev->stop = &happy_meal_close;
+ dev->hard_start_xmit = &happy_meal_start_xmit;
+ dev->get_stats = &happy_meal_get_stats;
+ dev->set_multicast_list = &happy_meal_set_multicast;
+ dev->tx_timeout = &happy_meal_tx_timeout;
+ dev->watchdog_timeo = 5*HZ;
+ dev->ethtool_ops = &hme_ethtool_ops;
+
+ /* Happy Meal can do it all... except VLAN. */
+ dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_VLAN_CHALLENGED;
+
+ dev->irq = sdev->irqs[0];
+
+#if defined(CONFIG_SBUS) && defined(CONFIG_PCI)
+ /* Hook up PCI register/dma accessors. */
+ hp->read_desc32 = sbus_hme_read_desc32;
+ hp->write_txd = sbus_hme_write_txd;
+ hp->write_rxd = sbus_hme_write_rxd;
+ hp->dma_map = (u32 (*)(void *, void *, long, int))sbus_map_single;
+ hp->dma_unmap = (void (*)(void *, u32, long, int))sbus_unmap_single;
+ hp->dma_sync_for_cpu = (void (*)(void *, u32, long, int))
+ sbus_dma_sync_single_for_cpu;
+ hp->dma_sync_for_device = (void (*)(void *, u32, long, int))
+ sbus_dma_sync_single_for_device;
+ hp->read32 = sbus_hme_read32;
+ hp->write32 = sbus_hme_write32;
+#endif
+
+ /* Grrr, Happy Meal comes up by default not advertising
+ * full duplex 100baseT capabilities, fix this.
+ */
+ spin_lock_irq(&hp->happy_lock);
+ happy_meal_set_initial_advertisement(hp);
+ spin_unlock_irq(&hp->happy_lock);
+
+ if (register_netdev(hp->dev)) {
+ printk(KERN_ERR "happymeal: Cannot register net device, "
+ "aborting.\n");
+ goto err_out_free_consistent;
+ }
+
+ if (qfe_slot != -1)
+ printk(KERN_INFO "%s: Quattro HME slot %d (SBUS) 10/100baseT Ethernet ",
+ dev->name, qfe_slot);
+ else
+ printk(KERN_INFO "%s: HAPPY MEAL (SBUS) 10/100baseT Ethernet ",
+ dev->name);
+
+ for (i = 0; i < 6; i++)
+ printk("%2.2x%c",
+ dev->dev_addr[i], i == 5 ? ' ' : ':');
+ printk("\n");
+
+ /* We are home free at this point, link us in to the happy
+ * device list.
+ */
+ hp->next_module = root_happy_dev;
+ root_happy_dev = hp;
+
+ return 0;
+
+err_out_free_consistent:
+ sbus_free_consistent(hp->happy_dev,
+ PAGE_SIZE,
+ hp->happy_block,
+ hp->hblock_dvma);
+
+err_out_iounmap:
+ if (hp->gregs)
+ sbus_iounmap(hp->gregs, GREG_REG_SIZE);
+ if (hp->etxregs)
+ sbus_iounmap(hp->etxregs, ETX_REG_SIZE);
+ if (hp->erxregs)
+ sbus_iounmap(hp->erxregs, ERX_REG_SIZE);
+ if (hp->bigmacregs)
+ sbus_iounmap(hp->bigmacregs, BMAC_REG_SIZE);
+ if (hp->tcvregs)
+ sbus_iounmap(hp->tcvregs, TCVR_REG_SIZE);
+
+err_out_free_netdev:
+ free_netdev(dev);
+
+err_out:
+ return err;
+}
+#endif
+
+#ifdef CONFIG_PCI
+#ifndef __sparc__
+static int is_quattro_p(struct pci_dev *pdev)
+{
+ struct pci_dev *busdev = pdev->bus->self;
+ struct list_head *tmp;
+ int n_hmes;
+
+ if (busdev == NULL ||
+ busdev->vendor != PCI_VENDOR_ID_DEC ||
+ busdev->device != PCI_DEVICE_ID_DEC_21153)
+ return 0;
+
+ n_hmes = 0;
+ tmp = pdev->bus->devices.next;
+ while (tmp != &pdev->bus->devices) {
+ struct pci_dev *this_pdev = pci_dev_b(tmp);
+
+ if (this_pdev->vendor == PCI_VENDOR_ID_SUN &&
+ this_pdev->device == PCI_DEVICE_ID_SUN_HAPPYMEAL)
+ n_hmes++;
+
+ tmp = tmp->next;
+ }
+
+ if (n_hmes != 4)
+ return 0;
+
+ return 1;
+}
+
+/* Fetch MAC address from vital product data of PCI ROM. */
+static void find_eth_addr_in_vpd(void __iomem *rom_base, int len, int index, unsigned char *dev_addr)
+{
+ int this_offset;
+
+ for (this_offset = 0x20; this_offset < len; this_offset++) {
+ void __iomem *p = rom_base + this_offset;
+
+ if (readb(p + 0) != 0x90 ||
+ readb(p + 1) != 0x00 ||
+ readb(p + 2) != 0x09 ||
+ readb(p + 3) != 0x4e ||
+ readb(p + 4) != 0x41 ||
+ readb(p + 5) != 0x06)
+ continue;
+
+ this_offset += 6;
+ p += 6;
+
+ if (index == 0) {
+ int i;
+
+ for (i = 0; i < 6; i++)
+ dev_addr[i] = readb(p + i);
+ break;
+ }
+ index--;
+ }
+}
+
+static void get_hme_mac_nonsparc(struct pci_dev *pdev, unsigned char *dev_addr)
+{
+ u32 rom_reg_orig;
+ void __iomem *p;
+ int index;
+
+ index = 0;
+ if (is_quattro_p(pdev))
+ index = PCI_SLOT(pdev->devfn);
+
+ if (pdev->resource[PCI_ROM_RESOURCE].parent == NULL) {
+ if (pci_assign_resource(pdev, PCI_ROM_RESOURCE) < 0)
+ goto use_random;
+ }
+
+ pci_read_config_dword(pdev, pdev->rom_base_reg, &rom_reg_orig);
+ pci_write_config_dword(pdev, pdev->rom_base_reg,
+ rom_reg_orig | PCI_ROM_ADDRESS_ENABLE);
+
+ p = ioremap(pci_resource_start(pdev, PCI_ROM_RESOURCE), (64 * 1024));
+ if (p != NULL && readb(p) == 0x55 && readb(p + 1) == 0xaa)
+ find_eth_addr_in_vpd(p, (64 * 1024), index, dev_addr);
+
+ if (p != NULL)
+ iounmap(p);
+
+ pci_write_config_dword(pdev, pdev->rom_base_reg, rom_reg_orig);
+ return;
+
+use_random:
+ /* Sun MAC prefix then 3 random bytes. */
+ dev_addr[0] = 0x08;
+ dev_addr[1] = 0x00;
+ dev_addr[2] = 0x20;
+ get_random_bytes(&dev_addr[3], 3);
+ return;
+}
+#endif /* !(__sparc__) */
+
+static int __init happy_meal_pci_init(struct pci_dev *pdev)
+{
+ struct quattro *qp = NULL;
+#ifdef __sparc__
+ struct pcidev_cookie *pcp;
+ int node;
+#endif
+ struct happy_meal *hp;
+ struct net_device *dev;
+ void __iomem *hpreg_base;
+ unsigned long hpreg_res;
+ int i, qfe_slot = -1;
+ char prom_name[64];
+ int err;
+
+ /* Now make sure pci_dev cookie is there. */
+#ifdef __sparc__
+ pcp = pdev->sysdata;
+ if (pcp == NULL || pcp->prom_node == -1) {
+ printk(KERN_ERR "happymeal(PCI): Some PCI device info missing\n");
+ return -ENODEV;
+ }
+ node = pcp->prom_node;
+
+ prom_getstring(node, "name", prom_name, sizeof(prom_name));
+#else
+ if (is_quattro_p(pdev))
+ strcpy(prom_name, "SUNW,qfe");
+ else
+ strcpy(prom_name, "SUNW,hme");
+#endif
+
+ err = -ENODEV;
+ if (!strcmp(prom_name, "SUNW,qfe") || !strcmp(prom_name, "qfe")) {
+ qp = quattro_pci_find(pdev);
+ if (qp == NULL)
+ goto err_out;
+ for (qfe_slot = 0; qfe_slot < 4; qfe_slot++)
+ if (qp->happy_meals[qfe_slot] == NULL)
+ break;
+ if (qfe_slot == 4)
+ goto err_out;
+ }
+
+ dev = alloc_etherdev(sizeof(struct happy_meal));
+ err = -ENOMEM;
+ if (!dev)
+ goto err_out;
+ SET_MODULE_OWNER(dev);
+ SET_NETDEV_DEV(dev, &pdev->dev);
+
+ if (hme_version_printed++ == 0)
+ printk(KERN_INFO "%s", version);
+
+ dev->base_addr = (long) pdev;
+
+ hp = (struct happy_meal *)dev->priv;
+ memset(hp, 0, sizeof(*hp));
+
+ hp->happy_dev = pdev;
+
+ spin_lock_init(&hp->happy_lock);
+
+ if (qp != NULL) {
+ hp->qfe_parent = qp;
+ hp->qfe_ent = qfe_slot;
+ qp->happy_meals[qfe_slot] = dev;
+ }
+
+ hpreg_res = pci_resource_start(pdev, 0);
+ err = -ENODEV;
+ if ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) != 0) {
+ printk(KERN_ERR "happymeal(PCI): Cannot find proper PCI device base address.\n");
+ goto err_out_clear_quattro;
+ }
+ if (pci_request_regions(pdev, DRV_NAME)) {
+ printk(KERN_ERR "happymeal(PCI): Cannot obtain PCI resources, "
+ "aborting.\n");
+ goto err_out_clear_quattro;
+ }
+
+ if ((hpreg_base = ioremap(hpreg_res, 0x8000)) == 0) {
+ printk(KERN_ERR "happymeal(PCI): Unable to remap card memory.\n");
+ goto err_out_free_res;
+ }
+
+ for (i = 0; i < 6; i++) {
+ if (macaddr[i] != 0)
+ break;
+ }
+ if (i < 6) { /* a mac address was given */
+ for (i = 0; i < 6; i++)
+ dev->dev_addr[i] = macaddr[i];
+ macaddr[5]++;
+ } else {
+#ifdef __sparc__
+ if (qfe_slot != -1 &&
+ prom_getproplen(node, "local-mac-address") == 6) {
+ prom_getproperty(node, "local-mac-address",
+ dev->dev_addr, 6);
+ } else {
+ memcpy(dev->dev_addr, idprom->id_ethaddr, 6);
+ }
+#else
+ get_hme_mac_nonsparc(pdev, &dev->dev_addr[0]);
+#endif
+ }
+
+ /* Layout registers. */
+ hp->gregs = (hpreg_base + 0x0000UL);
+ hp->etxregs = (hpreg_base + 0x2000UL);
+ hp->erxregs = (hpreg_base + 0x4000UL);
+ hp->bigmacregs = (hpreg_base + 0x6000UL);
+ hp->tcvregs = (hpreg_base + 0x7000UL);
+
+#ifdef __sparc__
+ hp->hm_revision = prom_getintdefault(node, "hm-rev", 0xff);
+ if (hp->hm_revision == 0xff) {
+ unsigned char prev;
+
+ pci_read_config_byte(pdev, PCI_REVISION_ID, &prev);
+ hp->hm_revision = 0xc0 | (prev & 0x0f);
+ }
+#else
+ /* works with this on non-sparc hosts */
+ hp->hm_revision = 0x20;
+#endif
+
+ /* Now enable the feature flags we can. */
+ if (hp->hm_revision == 0x20 || hp->hm_revision == 0x21)
+ hp->happy_flags = HFLAG_20_21;
+ else if (hp->hm_revision != 0xa0 && hp->hm_revision != 0xc0)
+ hp->happy_flags = HFLAG_NOT_A0;
+
+ if (qp != NULL)
+ hp->happy_flags |= HFLAG_QUATTRO;
+
+ /* And of course, indicate this is PCI. */
+ hp->happy_flags |= HFLAG_PCI;
+
+#ifdef __sparc__
+ /* Assume PCI happy meals can handle all burst sizes. */
+ hp->happy_bursts = DMA_BURSTBITS;
+#endif
+
+ hp->happy_block = (struct hmeal_init_block *)
+ pci_alloc_consistent(pdev, PAGE_SIZE, &hp->hblock_dvma);
+
+ err = -ENODEV;
+ if (!hp->happy_block) {
+ printk(KERN_ERR "happymeal(PCI): Cannot get hme init block.\n");
+ goto err_out_iounmap;
+ }
+
+ hp->linkcheck = 0;
+ hp->timer_state = asleep;
+ hp->timer_ticks = 0;
+
+ init_timer(&hp->happy_timer);
+
+ hp->dev = dev;
+ dev->open = &happy_meal_open;
+ dev->stop = &happy_meal_close;
+ dev->hard_start_xmit = &happy_meal_start_xmit;
+ dev->get_stats = &happy_meal_get_stats;
+ dev->set_multicast_list = &happy_meal_set_multicast;
+ dev->tx_timeout = &happy_meal_tx_timeout;
+ dev->watchdog_timeo = 5*HZ;
+ dev->ethtool_ops = &hme_ethtool_ops;
+ dev->irq = pdev->irq;
+ dev->dma = 0;
+
+ /* Happy Meal can do it all... */
+ dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
+
+#if defined(CONFIG_SBUS) && defined(CONFIG_PCI)
+ /* Hook up PCI register/dma accessors. */
+ hp->read_desc32 = pci_hme_read_desc32;
+ hp->write_txd = pci_hme_write_txd;
+ hp->write_rxd = pci_hme_write_rxd;
+ hp->dma_map = (u32 (*)(void *, void *, long, int))pci_map_single;
+ hp->dma_unmap = (void (*)(void *, u32, long, int))pci_unmap_single;
+ hp->dma_sync_for_cpu = (void (*)(void *, u32, long, int))
+ pci_dma_sync_single_for_cpu;
+ hp->dma_sync_for_device = (void (*)(void *, u32, long, int))
+ pci_dma_sync_single_for_device;
+ hp->read32 = pci_hme_read32;
+ hp->write32 = pci_hme_write32;
+#endif
+
+ /* Grrr, Happy Meal comes up by default not advertising
+ * full duplex 100baseT capabilities, fix this.
+ */
+ spin_lock_irq(&hp->happy_lock);
+ happy_meal_set_initial_advertisement(hp);
+ spin_unlock_irq(&hp->happy_lock);
+
+ if (register_netdev(hp->dev)) {
+ printk(KERN_ERR "happymeal(PCI): Cannot register net device, "
+ "aborting.\n");
+ goto err_out_iounmap;
+ }
+
+ if (!qfe_slot) {
+ struct pci_dev *qpdev = qp->quattro_dev;
+
+ prom_name[0] = 0;
+ if (!strncmp(dev->name, "eth", 3)) {
+ int i = simple_strtoul(dev->name + 3, NULL, 10);
+ sprintf(prom_name, "-%d", i + 3);
+ }
+ printk(KERN_INFO "%s%s: Quattro HME (PCI/CheerIO) 10/100baseT Ethernet ", dev->name, prom_name);
+ if (qpdev->vendor == PCI_VENDOR_ID_DEC &&
+ qpdev->device == PCI_DEVICE_ID_DEC_21153)
+ printk("DEC 21153 PCI Bridge\n");
+ else
+ printk("unknown bridge %04x.%04x\n",
+ qpdev->vendor, qpdev->device);
+ }
+
+ if (qfe_slot != -1)
+ printk(KERN_INFO "%s: Quattro HME slot %d (PCI/CheerIO) 10/100baseT Ethernet ",
+ dev->name, qfe_slot);
+ else
+ printk(KERN_INFO "%s: HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet ",
+ dev->name);
+
+ for (i = 0; i < 6; i++)
+ printk("%2.2x%c", dev->dev_addr[i], i == 5 ? ' ' : ':');
+
+ printk("\n");
+
+ /* We are home free at this point, link us in to the happy
+ * device list.
+ */
+ hp->next_module = root_happy_dev;
+ root_happy_dev = hp;
+
+ return 0;
+
+err_out_iounmap:
+ iounmap(hp->gregs);
+
+err_out_free_res:
+ pci_release_regions(pdev);
+
+err_out_clear_quattro:
+ if (qp != NULL)
+ qp->happy_meals[qfe_slot] = NULL;
+
+ free_netdev(dev);
+
+err_out:
+ return err;
+}
+#endif
+
+#ifdef CONFIG_SBUS
+static int __init happy_meal_sbus_probe(void)
+{
+ struct sbus_bus *sbus;
+ struct sbus_dev *sdev;
+ int cards = 0;
+ char model[128];
+
+ for_each_sbus(sbus) {
+ for_each_sbusdev(sdev, sbus) {
+ char *name = sdev->prom_name;
+
+ if (!strcmp(name, "SUNW,hme")) {
+ cards++;
+ prom_getstring(sdev->prom_node, "model",
+ model, sizeof(model));
+ if (!strcmp(model, "SUNW,sbus-qfe"))
+ happy_meal_sbus_init(sdev, 1);
+ else
+ happy_meal_sbus_init(sdev, 0);
+ } else if (!strcmp(name, "qfe") ||
+ !strcmp(name, "SUNW,qfe")) {
+ cards++;
+ happy_meal_sbus_init(sdev, 1);
+ }
+ }
+ }
+ if (cards != 0)
+ quattro_sbus_register_irqs();
+ return cards;
+}
+#endif
+
+#ifdef CONFIG_PCI
+static int __init happy_meal_pci_probe(void)
+{
+ struct pci_dev *pdev = NULL;
+ int cards = 0;
+
+ while ((pdev = pci_find_device(PCI_VENDOR_ID_SUN,
+ PCI_DEVICE_ID_SUN_HAPPYMEAL, pdev)) != NULL) {
+ if (pci_enable_device(pdev))
+ continue;
+ pci_set_master(pdev);
+ cards++;
+ happy_meal_pci_init(pdev);
+ }
+ return cards;
+}
+#endif
+
+static int __init happy_meal_probe(void)
+{
+ static int called = 0;
+ int cards;
+
+ root_happy_dev = NULL;
+
+ if (called)
+ return -ENODEV;
+ called++;
+
+ cards = 0;
+#ifdef CONFIG_SBUS
+ cards += happy_meal_sbus_probe();
+#endif
+#ifdef CONFIG_PCI
+ cards += happy_meal_pci_probe();
+#endif
+ if (!cards)
+ return -ENODEV;
+ return 0;
+}
+
+
+static void __exit happy_meal_cleanup_module(void)
+{
+#ifdef CONFIG_SBUS
+ struct quattro *last_seen_qfe = NULL;
+#endif
+
+ while (root_happy_dev) {
+ struct happy_meal *hp = root_happy_dev;
+ struct happy_meal *next = root_happy_dev->next_module;
+ struct net_device *dev = hp->dev;
+
+ /* Unregister netdev before unmapping registers as this
+ * call can end up trying to access those registers.
+ */
+ unregister_netdev(dev);
+
+#ifdef CONFIG_SBUS
+ if (!(hp->happy_flags & HFLAG_PCI)) {
+ if (hp->happy_flags & HFLAG_QUATTRO) {
+ if (hp->qfe_parent != last_seen_qfe) {
+ free_irq(dev->irq, hp->qfe_parent);
+ last_seen_qfe = hp->qfe_parent;
+ }
+ }
+
+ sbus_iounmap(hp->gregs, GREG_REG_SIZE);
+ sbus_iounmap(hp->etxregs, ETX_REG_SIZE);
+ sbus_iounmap(hp->erxregs, ERX_REG_SIZE);
+ sbus_iounmap(hp->bigmacregs, BMAC_REG_SIZE);
+ sbus_iounmap(hp->tcvregs, TCVR_REG_SIZE);
+ sbus_free_consistent(hp->happy_dev,
+ PAGE_SIZE,
+ hp->happy_block,
+ hp->hblock_dvma);
+ }
+#endif
+#ifdef CONFIG_PCI
+ if ((hp->happy_flags & HFLAG_PCI)) {
+ pci_free_consistent(hp->happy_dev,
+ PAGE_SIZE,
+ hp->happy_block,
+ hp->hblock_dvma);
+ iounmap(hp->gregs);
+ pci_release_regions(hp->happy_dev);
+ }
+#endif
+ free_netdev(dev);
+
+ root_happy_dev = next;
+ }
+
+ /* Now cleanup the quattro lists. */
+#ifdef CONFIG_SBUS
+ while (qfe_sbus_list) {
+ struct quattro *qfe = qfe_sbus_list;
+ struct quattro *next = qfe->next;
+
+ kfree(qfe);
+
+ qfe_sbus_list = next;
+ }
+#endif
+#ifdef CONFIG_PCI
+ while (qfe_pci_list) {
+ struct quattro *qfe = qfe_pci_list;
+ struct quattro *next = qfe->next;
+
+ kfree(qfe);
+
+ qfe_pci_list = next;
+ }
+#endif
+}
+
+module_init(happy_meal_probe);
+module_exit(happy_meal_cleanup_module);
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-16 16:40:13 +0000