sungem.c
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上传日期:2013-04-10
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- /* $Id: sungem.c,v 1.44.2.22 2002/03/13 01:18:12 davem Exp $
- * sungem.c: Sun GEM ethernet driver.
- *
- * Copyright (C) 2000, 2001, 2002 David S. Miller (davem@redhat.com)
- *
- * Support for Apple GMAC and assorted PHYs by
- * Benjamin Herrenscmidt (benh@kernel.crashing.org)
- *
- * TODO:
- * - Get rid of all those nasty mdelay's and replace them
- * with schedule_timeout.
- * - Implement WOL
- * - Currently, forced Gb mode is only supported on bcm54xx
- * PHY for which I use the SPD2 bit of the control register.
- * On m1011 PHY, I can't force as I don't have the specs, but
- * I can at least detect gigabit with autoneg.
- */
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/types.h>
- #include <linux/fcntl.h>
- #include <linux/interrupt.h>
- #include <linux/ptrace.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/errno.h>
- #include <linux/pci.h>
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/skbuff.h>
- #include <linux/mii.h>
- #include <linux/ethtool.h>
- #include <linux/crc32.h>
- #include <linux/random.h>
- #include <asm/system.h>
- #include <asm/bitops.h>
- #include <asm/io.h>
- #include <asm/byteorder.h>
- #include <asm/uaccess.h>
- #include <asm/irq.h>
- #ifdef __sparc__
- #include <asm/idprom.h>
- #include <asm/openprom.h>
- #include <asm/oplib.h>
- #include <asm/pbm.h>
- #endif
- #ifdef CONFIG_ALL_PPC
- #include <asm/pci-bridge.h>
- #include <asm/prom.h>
- #include <asm/machdep.h>
- #include <asm/pmac_feature.h>
- #endif
- #include "sungem.h"
- #define DEFAULT_MSG (NETIF_MSG_DRV |
- NETIF_MSG_PROBE |
- NETIF_MSG_LINK)
- #define DRV_NAME "sungem"
- #define DRV_VERSION "0.97"
- #define DRV_RELDATE "3/20/02"
- #define DRV_AUTHOR "David S. Miller (davem@redhat.com)"
- static char version[] __devinitdata =
- DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " " DRV_AUTHOR "n";
- MODULE_AUTHOR(DRV_AUTHOR);
- MODULE_DESCRIPTION("Sun GEM Gbit ethernet driver");
- MODULE_LICENSE("GPL");
- MODULE_PARM(gem_debug, "i");
- MODULE_PARM_DESC(gem_debug, "bitmapped message enable number");
- MODULE_PARM(link_mode, "i");
- MODULE_PARM_DESC(link_mode, "default link mode");
- int gem_debug = -1;
- static int link_mode;
- static u16 link_modes[] __devinitdata = {
- BMCR_ANENABLE, /* 0 : autoneg */
- 0, /* 1 : 10bt half duplex */
- BMCR_SPEED100, /* 2 : 100bt half duplex */
- BMCR_SPD2, /* bcm54xx only */ /* 3 : 1000bt half duplex */
- BMCR_FULLDPLX, /* 4 : 10bt full duplex */
- BMCR_SPEED100|BMCR_FULLDPLX, /* 5 : 100bt full duplex */
- BMCR_SPD2|BMCR_FULLDPLX /* 6 : 1000bt full duplex */
- };
- #define GEM_MODULE_NAME "gem"
- #define PFX GEM_MODULE_NAME ": "
- static struct pci_device_id gem_pci_tbl[] __devinitdata = {
- { PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_GEM,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
- /* These models only differ from the original GEM in
- * that their tx/rx fifos are of a different size and
- * they only support 10/100 speeds. -DaveM
- *
- * Apple's GMAC does support gigabit on machines with
- * the BCM54xx PHYs. -BenH
- */
- { PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_RIO_GEM,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
- { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMAC,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
- { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMACP,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
- {0, }
- };
- MODULE_DEVICE_TABLE(pci, gem_pci_tbl);
- static u16 __phy_read(struct gem *gp, int reg, int phy_addr)
- {
- u32 cmd;
- int limit = 10000;
- cmd = (1 << 30);
- cmd |= (2 << 28);
- cmd |= (phy_addr << 23) & MIF_FRAME_PHYAD;
- cmd |= (reg << 18) & MIF_FRAME_REGAD;
- cmd |= (MIF_FRAME_TAMSB);
- writel(cmd, gp->regs + MIF_FRAME);
- while (limit--) {
- cmd = readl(gp->regs + MIF_FRAME);
- if (cmd & MIF_FRAME_TALSB)
- break;
- udelay(10);
- }
- if (!limit)
- cmd = 0xffff;
- return cmd & MIF_FRAME_DATA;
- }
- static inline u16 phy_read(struct gem *gp, int reg)
- {
- return __phy_read(gp, reg, gp->mii_phy_addr);
- }
- static void __phy_write(struct gem *gp, int reg, u16 val, int phy_addr)
- {
- u32 cmd;
- int limit = 10000;
- cmd = (1 << 30);
- cmd |= (1 << 28);
- cmd |= (phy_addr << 23) & MIF_FRAME_PHYAD;
- cmd |= (reg << 18) & MIF_FRAME_REGAD;
- cmd |= (MIF_FRAME_TAMSB);
- cmd |= (val & MIF_FRAME_DATA);
- writel(cmd, gp->regs + MIF_FRAME);
- while (limit--) {
- cmd = readl(gp->regs + MIF_FRAME);
- if (cmd & MIF_FRAME_TALSB)
- break;
- udelay(10);
- }
- }
- static inline void phy_write(struct gem *gp, int reg, u16 val)
- {
- __phy_write(gp, reg, val, gp->mii_phy_addr);
- }
- static void gem_handle_mif_event(struct gem *gp, u32 reg_val, u32 changed_bits)
- {
- if (netif_msg_intr(gp))
- printk(KERN_DEBUG "%s: mif interruptn", gp->dev->name);
- }
- static int gem_pcs_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
- {
- u32 pcs_istat = readl(gp->regs + PCS_ISTAT);
- u32 pcs_miistat;
- if (netif_msg_intr(gp))
- printk(KERN_DEBUG "%s: pcs interrupt, pcs_istat: 0x%xn",
- gp->dev->name, pcs_istat);
- if (!(pcs_istat & PCS_ISTAT_LSC)) {
- printk(KERN_ERR "%s: PCS irq but no link status change???n",
- dev->name);
- return 0;
- }
- /* The link status bit latches on zero, so you must
- * read it twice in such a case to see a transition
- * to the link being up.
- */
- pcs_miistat = readl(gp->regs + PCS_MIISTAT);
- if (!(pcs_miistat & PCS_MIISTAT_LS))
- pcs_miistat |=
- (readl(gp->regs + PCS_MIISTAT) &
- PCS_MIISTAT_LS);
- if (pcs_miistat & PCS_MIISTAT_ANC) {
- /* The remote-fault indication is only valid
- * when autoneg has completed.
- */
- if (pcs_miistat & PCS_MIISTAT_RF)
- printk(KERN_INFO "%s: PCS AutoNEG complete, "
- "RemoteFaultn", dev->name);
- else
- printk(KERN_INFO "%s: PCS AutoNEG complete.n",
- dev->name);
- }
- if (pcs_miistat & PCS_MIISTAT_LS) {
- printk(KERN_INFO "%s: PCS link is now up.n",
- dev->name);
- } else {
- printk(KERN_INFO "%s: PCS link is now down.n",
- dev->name);
- /* If this happens and the link timer is not running,
- * reset so we re-negotiate.
- */
- if (!timer_pending(&gp->link_timer))
- return 1;
- }
- return 0;
- }
- static int gem_txmac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
- {
- u32 txmac_stat = readl(gp->regs + MAC_TXSTAT);
- if (netif_msg_intr(gp))
- printk(KERN_DEBUG "%s: txmac interrupt, txmac_stat: 0x%xn",
- gp->dev->name, txmac_stat);
- /* Defer timer expiration is quite normal,
- * don't even log the event.
- */
- if ((txmac_stat & MAC_TXSTAT_DTE) &&
- !(txmac_stat & ~MAC_TXSTAT_DTE))
- return 0;
- if (txmac_stat & MAC_TXSTAT_URUN) {
- printk(KERN_ERR "%s: TX MAC xmit underrun.n",
- dev->name);
- gp->net_stats.tx_fifo_errors++;
- }
- if (txmac_stat & MAC_TXSTAT_MPE) {
- printk(KERN_ERR "%s: TX MAC max packet size error.n",
- dev->name);
- gp->net_stats.tx_errors++;
- }
- /* The rest are all cases of one of the 16-bit TX
- * counters expiring.
- */
- if (txmac_stat & MAC_TXSTAT_NCE)
- gp->net_stats.collisions += 0x10000;
- if (txmac_stat & MAC_TXSTAT_ECE) {
- gp->net_stats.tx_aborted_errors += 0x10000;
- gp->net_stats.collisions += 0x10000;
- }
- if (txmac_stat & MAC_TXSTAT_LCE) {
- gp->net_stats.tx_aborted_errors += 0x10000;
- gp->net_stats.collisions += 0x10000;
- }
- /* We do not keep track of MAC_TXSTAT_FCE and
- * MAC_TXSTAT_PCE events.
- */
- return 0;
- }
- /* When we get a RX fifo overflow, the RX unit in GEM is probably hung
- * so we do the following.
- *
- * If any part of the reset goes wrong, we return 1 and that causes the
- * whole chip to be reset.
- */
- static int gem_rxmac_reset(struct gem *gp)
- {
- struct net_device *dev = gp->dev;
- int limit, i;
- u64 desc_dma;
- u32 val;
- /* First, reset MAC RX. */
- writel(gp->mac_rx_cfg & ~MAC_RXCFG_ENAB,
- gp->regs + MAC_RXCFG);
- for (limit = 0; limit < 5000; limit++) {
- if (!(readl(gp->regs + MAC_RXCFG) & MAC_RXCFG_ENAB))
- break;
- udelay(10);
- }
- if (limit == 5000) {
- printk(KERN_ERR "%s: RX MAC will not disable, resetting whole "
- "chip.n", dev->name);
- return 1;
- }
- /* Second, disable RX DMA. */
- writel(0, gp->regs + RXDMA_CFG);
- for (limit = 0; limit < 5000; limit++) {
- if (!(readl(gp->regs + RXDMA_CFG) & RXDMA_CFG_ENABLE))
- break;
- udelay(10);
- }
- if (limit == 5000) {
- printk(KERN_ERR "%s: RX DMA will not disable, resetting whole "
- "chip.n", dev->name);
- return 1;
- }
- udelay(5000);
- /* Execute RX reset command. */
- writel(gp->swrst_base | GREG_SWRST_RXRST,
- gp->regs + GREG_SWRST);
- for (limit = 0; limit < 5000; limit++) {
- if (!(readl(gp->regs + GREG_SWRST) & GREG_SWRST_RXRST))
- break;
- udelay(10);
- }
- if (limit == 5000) {
- printk(KERN_ERR "%s: RX reset command will not execute, resetting "
- "whole chip.n", dev->name);
- return 1;
- }
- /* Refresh the RX ring. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- struct gem_rxd *rxd = &gp->init_block->rxd[i];
- if (gp->rx_skbs[i] == NULL) {
- printk(KERN_ERR "%s: Parts of RX ring empty, resetting "
- "whole chip.n", dev->name);
- return 1;
- }
- rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
- }
- gp->rx_new = gp->rx_old = 0;
- /* Now we must reprogram the rest of RX unit. */
- desc_dma = (u64) gp->gblock_dvma;
- desc_dma += (INIT_BLOCK_TX_RING_SIZE * sizeof(struct gem_txd));
- writel(desc_dma >> 32, gp->regs + RXDMA_DBHI);
- writel(desc_dma & 0xffffffff, gp->regs + RXDMA_DBLOW);
- writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
- val = (RXDMA_CFG_BASE | (RX_OFFSET << 10) |
- ((14 / 2) << 13) | RXDMA_CFG_FTHRESH_128);
- writel(val, gp->regs + RXDMA_CFG);
- if (readl(gp->regs + GREG_BIFCFG) & GREG_BIFCFG_M66EN)
- writel(((5 & RXDMA_BLANK_IPKTS) |
- ((8 << 12) & RXDMA_BLANK_ITIME)),
- gp->regs + RXDMA_BLANK);
- else
- writel(((5 & RXDMA_BLANK_IPKTS) |
- ((4 << 12) & RXDMA_BLANK_ITIME)),
- gp->regs + RXDMA_BLANK);
- val = (((gp->rx_pause_off / 64) << 0) & RXDMA_PTHRESH_OFF);
- val |= (((gp->rx_pause_on / 64) << 12) & RXDMA_PTHRESH_ON);
- writel(val, gp->regs + RXDMA_PTHRESH);
- val = readl(gp->regs + RXDMA_CFG);
- writel(val | RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG);
- writel(MAC_RXSTAT_RCV, gp->regs + MAC_RXMASK);
- val = readl(gp->regs + MAC_RXCFG);
- writel(val | MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
- return 0;
- }
- static int gem_rxmac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
- {
- u32 rxmac_stat = readl(gp->regs + MAC_RXSTAT);
- int ret = 0;
- if (netif_msg_intr(gp))
- printk(KERN_DEBUG "%s: rxmac interrupt, rxmac_stat: 0x%xn",
- gp->dev->name, rxmac_stat);
- if (rxmac_stat & MAC_RXSTAT_OFLW) {
- gp->net_stats.rx_over_errors++;
- gp->net_stats.rx_fifo_errors++;
- ret = gem_rxmac_reset(gp);
- }
- if (rxmac_stat & MAC_RXSTAT_ACE)
- gp->net_stats.rx_frame_errors += 0x10000;
- if (rxmac_stat & MAC_RXSTAT_CCE)
- gp->net_stats.rx_crc_errors += 0x10000;
- if (rxmac_stat & MAC_RXSTAT_LCE)
- gp->net_stats.rx_length_errors += 0x10000;
- /* We do not track MAC_RXSTAT_FCE and MAC_RXSTAT_VCE
- * events.
- */
- return ret;
- }
- static int gem_mac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
- {
- u32 mac_cstat = readl(gp->regs + MAC_CSTAT);
- if (netif_msg_intr(gp))
- printk(KERN_DEBUG "%s: mac interrupt, mac_cstat: 0x%xn",
- gp->dev->name, mac_cstat);
- /* This interrupt is just for pause frame and pause
- * tracking. It is useful for diagnostics and debug
- * but probably by default we will mask these events.
- */
- if (mac_cstat & MAC_CSTAT_PS)
- gp->pause_entered++;
- if (mac_cstat & MAC_CSTAT_PRCV)
- gp->pause_last_time_recvd = (mac_cstat >> 16);
- return 0;
- }
- static int gem_mif_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
- {
- u32 mif_status = readl(gp->regs + MIF_STATUS);
- u32 reg_val, changed_bits;
- reg_val = (mif_status & MIF_STATUS_DATA) >> 16;
- changed_bits = (mif_status & MIF_STATUS_STAT);
- gem_handle_mif_event(gp, reg_val, changed_bits);
- return 0;
- }
- static int gem_pci_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
- {
- u32 pci_estat = readl(gp->regs + GREG_PCIESTAT);
- if (gp->pdev->vendor == PCI_VENDOR_ID_SUN &&
- gp->pdev->device == PCI_DEVICE_ID_SUN_GEM) {
- printk(KERN_ERR "%s: PCI error [%04x] ",
- dev->name, pci_estat);
- if (pci_estat & GREG_PCIESTAT_BADACK)
- printk("<No ACK64# during ABS64 cycle> ");
- if (pci_estat & GREG_PCIESTAT_DTRTO)
- printk("<Delayed transaction timeout> ");
- if (pci_estat & GREG_PCIESTAT_OTHER)
- printk("<other>");
- printk("n");
- } else {
- pci_estat |= GREG_PCIESTAT_OTHER;
- printk(KERN_ERR "%s: PCI errorn", dev->name);
- }
- if (pci_estat & GREG_PCIESTAT_OTHER) {
- u16 pci_cfg_stat;
- /* Interrogate PCI config space for the
- * true cause.
- */
- pci_read_config_word(gp->pdev, PCI_STATUS,
- &pci_cfg_stat);
- printk(KERN_ERR "%s: Read PCI cfg space status [%04x]n",
- dev->name, pci_cfg_stat);
- if (pci_cfg_stat & PCI_STATUS_PARITY)
- printk(KERN_ERR "%s: PCI parity error detected.n",
- dev->name);
- if (pci_cfg_stat & PCI_STATUS_SIG_TARGET_ABORT)
- printk(KERN_ERR "%s: PCI target abort.n",
- dev->name);
- if (pci_cfg_stat & PCI_STATUS_REC_TARGET_ABORT)
- printk(KERN_ERR "%s: PCI master acks target abort.n",
- dev->name);
- if (pci_cfg_stat & PCI_STATUS_REC_MASTER_ABORT)
- printk(KERN_ERR "%s: PCI master abort.n",
- dev->name);
- if (pci_cfg_stat & PCI_STATUS_SIG_SYSTEM_ERROR)
- printk(KERN_ERR "%s: PCI system error SERR#.n",
- dev->name);
- if (pci_cfg_stat & PCI_STATUS_DETECTED_PARITY)
- printk(KERN_ERR "%s: PCI parity error.n",
- dev->name);
- /* Write the error bits back to clear them. */
- pci_cfg_stat &= (PCI_STATUS_PARITY |
- PCI_STATUS_SIG_TARGET_ABORT |
- PCI_STATUS_REC_TARGET_ABORT |
- PCI_STATUS_REC_MASTER_ABORT |
- PCI_STATUS_SIG_SYSTEM_ERROR |
- PCI_STATUS_DETECTED_PARITY);
- pci_write_config_word(gp->pdev,
- PCI_STATUS, pci_cfg_stat);
- }
- /* For all PCI errors, we should reset the chip. */
- return 1;
- }
- /* All non-normal interrupt conditions get serviced here.
- * Returns non-zero if we should just exit the interrupt
- * handler right now (ie. if we reset the card which invalidates
- * all of the other original irq status bits).
- */
- static int gem_abnormal_irq(struct net_device *dev, struct gem *gp, u32 gem_status)
- {
- if (gem_status & GREG_STAT_RXNOBUF) {
- /* Frame arrived, no free RX buffers available. */
- if (netif_msg_rx_err(gp))
- printk(KERN_DEBUG "%s: no buffer for rx framen",
- gp->dev->name);
- gp->net_stats.rx_dropped++;
- }
- if (gem_status & GREG_STAT_RXTAGERR) {
- /* corrupt RX tag framing */
- if (netif_msg_rx_err(gp))
- printk(KERN_DEBUG "%s: corrupt rx tag framingn",
- gp->dev->name);
- gp->net_stats.rx_errors++;
- goto do_reset;
- }
- if (gem_status & GREG_STAT_PCS) {
- if (gem_pcs_interrupt(dev, gp, gem_status))
- goto do_reset;
- }
- if (gem_status & GREG_STAT_TXMAC) {
- if (gem_txmac_interrupt(dev, gp, gem_status))
- goto do_reset;
- }
- if (gem_status & GREG_STAT_RXMAC) {
- if (gem_rxmac_interrupt(dev, gp, gem_status))
- goto do_reset;
- }
- if (gem_status & GREG_STAT_MAC) {
- if (gem_mac_interrupt(dev, gp, gem_status))
- goto do_reset;
- }
- if (gem_status & GREG_STAT_MIF) {
- if (gem_mif_interrupt(dev, gp, gem_status))
- goto do_reset;
- }
- if (gem_status & GREG_STAT_PCIERR) {
- if (gem_pci_interrupt(dev, gp, gem_status))
- goto do_reset;
- }
- return 0;
- do_reset:
- gp->reset_task_pending = 2;
- schedule_task(&gp->reset_task);
- return 1;
- }
- static __inline__ void gem_tx(struct net_device *dev, struct gem *gp, u32 gem_status)
- {
- int entry, limit;
- if (netif_msg_intr(gp))
- printk(KERN_DEBUG "%s: tx interrupt, gem_status: 0x%xn",
- gp->dev->name, gem_status);
- entry = gp->tx_old;
- limit = ((gem_status & GREG_STAT_TXNR) >> GREG_STAT_TXNR_SHIFT);
- while (entry != limit) {
- struct sk_buff *skb;
- struct gem_txd *txd;
- dma_addr_t dma_addr;
- u32 dma_len;
- int frag;
- if (netif_msg_tx_done(gp))
- printk(KERN_DEBUG "%s: tx done, slot %dn",
- gp->dev->name, entry);
- skb = gp->tx_skbs[entry];
- if (skb_shinfo(skb)->nr_frags) {
- int last = entry + skb_shinfo(skb)->nr_frags;
- int walk = entry;
- int incomplete = 0;
- last &= (TX_RING_SIZE - 1);
- for (;;) {
- walk = NEXT_TX(walk);
- if (walk == limit)
- incomplete = 1;
- if (walk == last)
- break;
- }
- if (incomplete)
- break;
- }
- gp->tx_skbs[entry] = NULL;
- gp->net_stats.tx_bytes += skb->len;
- for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
- txd = &gp->init_block->txd[entry];
- dma_addr = le64_to_cpu(txd->buffer);
- dma_len = le64_to_cpu(txd->control_word) & TXDCTRL_BUFSZ;
- pci_unmap_page(gp->pdev, dma_addr, dma_len, PCI_DMA_TODEVICE);
- entry = NEXT_TX(entry);
- }
- gp->net_stats.tx_packets++;
- dev_kfree_skb_irq(skb);
- }
- gp->tx_old = entry;
- if (netif_queue_stopped(dev) &&
- TX_BUFFS_AVAIL(gp) > (MAX_SKB_FRAGS + 1))
- netif_wake_queue(dev);
- }
- static __inline__ void gem_post_rxds(struct gem *gp, int limit)
- {
- int cluster_start, curr, count, kick;
- cluster_start = curr = (gp->rx_new & ~(4 - 1));
- count = 0;
- kick = -1;
- while (curr != limit) {
- curr = NEXT_RX(curr);
- if (++count == 4) {
- struct gem_rxd *rxd =
- &gp->init_block->rxd[cluster_start];
- for (;;) {
- rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
- rxd++;
- cluster_start = NEXT_RX(cluster_start);
- if (cluster_start == curr)
- break;
- }
- kick = curr;
- count = 0;
- }
- }
- if (kick >= 0)
- writel(kick, gp->regs + RXDMA_KICK);
- }
- static void gem_rx(struct gem *gp)
- {
- int entry, drops;
- if (netif_msg_intr(gp))
- printk(KERN_DEBUG "%s: rx interrupt, done: %d, rx_new: %dn",
- gp->dev->name, readl(gp->regs + RXDMA_DONE), gp->rx_new);
- entry = gp->rx_new;
- drops = 0;
- for (;;) {
- struct gem_rxd *rxd = &gp->init_block->rxd[entry];
- struct sk_buff *skb;
- u64 status = cpu_to_le64(rxd->status_word);
- dma_addr_t dma_addr;
- int len;
- if ((status & RXDCTRL_OWN) != 0)
- break;
- skb = gp->rx_skbs[entry];
- len = (status & RXDCTRL_BUFSZ) >> 16;
- if ((len < ETH_ZLEN) || (status & RXDCTRL_BAD)) {
- gp->net_stats.rx_errors++;
- if (len < ETH_ZLEN)
- gp->net_stats.rx_length_errors++;
- if (len & RXDCTRL_BAD)
- gp->net_stats.rx_crc_errors++;
- /* We'll just return it to GEM. */
- drop_it:
- gp->net_stats.rx_dropped++;
- goto next;
- }
- dma_addr = cpu_to_le64(rxd->buffer);
- if (len > RX_COPY_THRESHOLD) {
- struct sk_buff *new_skb;
- new_skb = gem_alloc_skb(RX_BUF_ALLOC_SIZE(gp), GFP_ATOMIC);
- if (new_skb == NULL) {
- drops++;
- goto drop_it;
- }
- pci_unmap_page(gp->pdev, dma_addr,
- RX_BUF_ALLOC_SIZE(gp),
- PCI_DMA_FROMDEVICE);
- gp->rx_skbs[entry] = new_skb;
- new_skb->dev = gp->dev;
- skb_put(new_skb, (ETH_FRAME_LEN + RX_OFFSET));
- rxd->buffer = cpu_to_le64(pci_map_page(gp->pdev,
- virt_to_page(new_skb->data),
- ((unsigned long) new_skb->data &
- ~PAGE_MASK),
- RX_BUF_ALLOC_SIZE(gp),
- PCI_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 = gp->dev;
- skb_reserve(copy_skb, 2);
- skb_put(copy_skb, len);
- pci_dma_sync_single(gp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE);
- memcpy(copy_skb->data, skb->data, len);
- /* We'll reuse the original ring buffer. */
- skb = copy_skb;
- }
- skb->csum = ntohs((status & RXDCTRL_TCPCSUM) ^ 0xffff);
- skb->ip_summed = CHECKSUM_HW;
- skb->protocol = eth_type_trans(skb, gp->dev);
- netif_rx(skb);
- gp->net_stats.rx_packets++;
- gp->net_stats.rx_bytes += len;
- gp->dev->last_rx = jiffies;
- next:
- entry = NEXT_RX(entry);
- }
- gem_post_rxds(gp, entry);
- gp->rx_new = entry;
- if (drops)
- printk(KERN_INFO "%s: Memory squeeze, deferring packet.n",
- gp->dev->name);
- }
- static void gem_interrupt(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct net_device *dev = dev_id;
- struct gem *gp = dev->priv;
- u32 gem_status = readl(gp->regs + GREG_STAT);
- spin_lock(&gp->lock);
- if (gem_status & GREG_STAT_ABNORMAL) {
- if (gem_abnormal_irq(dev, gp, gem_status))
- goto out;
- }
- if (gem_status & (GREG_STAT_TXALL | GREG_STAT_TXINTME))
- gem_tx(dev, gp, gem_status);
- if (gem_status & GREG_STAT_RXDONE)
- gem_rx(gp);
- out:
- spin_unlock(&gp->lock);
- }
- static void gem_tx_timeout(struct net_device *dev)
- {
- struct gem *gp = dev->priv;
- printk(KERN_ERR "%s: transmit timed out, resettingn", dev->name);
- if (!gp->hw_running) {
- printk("%s: hrm.. hw not running !n", dev->name);
- return;
- }
- printk(KERN_ERR "%s: TX_STATE[%08x:%08x:%08x]n",
- dev->name,
- readl(gp->regs + TXDMA_CFG),
- readl(gp->regs + MAC_TXSTAT),
- readl(gp->regs + MAC_TXCFG));
- printk(KERN_ERR "%s: RX_STATE[%08x:%08x:%08x]n",
- dev->name,
- readl(gp->regs + RXDMA_CFG),
- readl(gp->regs + MAC_RXSTAT),
- readl(gp->regs + MAC_RXCFG));
- spin_lock_irq(&gp->lock);
- gp->reset_task_pending = 2;
- schedule_task(&gp->reset_task);
- spin_unlock_irq(&gp->lock);
- }
- static __inline__ int gem_intme(int entry)
- {
- /* Algorithm: IRQ every 1/2 of descriptors. */
- if (!(entry & ((TX_RING_SIZE>>1)-1)))
- return 1;
- return 0;
- }
- static int gem_start_xmit(struct sk_buff *skb, struct net_device *dev)
- {
- struct gem *gp = dev->priv;
- int entry;
- u64 ctrl;
- ctrl = 0;
- if (skb->ip_summed == CHECKSUM_HW) {
- u64 csum_start_off, csum_stuff_off;
- csum_start_off = (u64) (skb->h.raw - skb->data);
- csum_stuff_off = (u64) ((skb->h.raw + skb->csum) - skb->data);
- ctrl = (TXDCTRL_CENAB |
- (csum_start_off << 15) |
- (csum_stuff_off << 21));
- }
- spin_lock_irq(&gp->lock);
- /* This is a hard error, log it. */
- if (TX_BUFFS_AVAIL(gp) <= (skb_shinfo(skb)->nr_frags + 1)) {
- netif_stop_queue(dev);
- spin_unlock_irq(&gp->lock);
- printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!n",
- dev->name);
- return 1;
- }
- entry = gp->tx_new;
- gp->tx_skbs[entry] = skb;
- if (skb_shinfo(skb)->nr_frags == 0) {
- struct gem_txd *txd = &gp->init_block->txd[entry];
- dma_addr_t mapping;
- u32 len;
- len = skb->len;
- mapping = pci_map_page(gp->pdev,
- virt_to_page(skb->data),
- ((unsigned long) skb->data &
- ~PAGE_MASK),
- len, PCI_DMA_TODEVICE);
- ctrl |= TXDCTRL_SOF | TXDCTRL_EOF | len;
- if (gem_intme(entry))
- ctrl |= TXDCTRL_INTME;
- txd->buffer = cpu_to_le64(mapping);
- txd->control_word = cpu_to_le64(ctrl);
- entry = NEXT_TX(entry);
- } else {
- struct gem_txd *txd;
- u32 first_len;
- u64 intme;
- dma_addr_t first_mapping;
- int frag, first_entry = entry;
- intme = 0;
- if (gem_intme(entry))
- intme |= TXDCTRL_INTME;
- /* We must give this initial chunk to the device last.
- * Otherwise we could race with the device.
- */
- first_len = skb->len - skb->data_len;
- first_mapping = pci_map_page(gp->pdev, virt_to_page(skb->data),
- ((unsigned long) skb->data & ~PAGE_MASK),
- first_len, PCI_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;
- dma_addr_t mapping;
- u64 this_ctrl;
- len = this_frag->size;
- mapping = pci_map_page(gp->pdev,
- this_frag->page,
- this_frag->page_offset,
- len, PCI_DMA_TODEVICE);
- this_ctrl = ctrl;
- if (frag == skb_shinfo(skb)->nr_frags - 1)
- this_ctrl |= TXDCTRL_EOF;
-
- txd = &gp->init_block->txd[entry];
- txd->buffer = cpu_to_le64(mapping);
- txd->control_word = cpu_to_le64(this_ctrl | len);
- if (gem_intme(entry))
- intme |= TXDCTRL_INTME;
- entry = NEXT_TX(entry);
- }
- txd = &gp->init_block->txd[first_entry];
- txd->buffer = cpu_to_le64(first_mapping);
- txd->control_word =
- cpu_to_le64(ctrl | TXDCTRL_SOF | intme | first_len);
- }
- gp->tx_new = entry;
- if (TX_BUFFS_AVAIL(gp) <= (MAX_SKB_FRAGS + 1))
- netif_stop_queue(dev);
- if (netif_msg_tx_queued(gp))
- printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %dn",
- dev->name, entry, skb->len);
- writel(gp->tx_new, gp->regs + TXDMA_KICK);
- spin_unlock_irq(&gp->lock);
- dev->trans_start = jiffies;
- return 0;
- }
- /* Jumbo-grams don't seem to work :-( */
- #define GEM_MIN_MTU 68
- #if 1
- #define GEM_MAX_MTU 1500
- #else
- #define GEM_MAX_MTU 9000
- #endif
- static int gem_change_mtu(struct net_device *dev, int new_mtu)
- {
- struct gem *gp = dev->priv;
- if (new_mtu < GEM_MIN_MTU || new_mtu > GEM_MAX_MTU)
- return -EINVAL;
- if (!netif_running(dev) || !netif_device_present(dev)) {
- /* We'll just catch it later when the
- * device is up'd or resumed.
- */
- dev->mtu = new_mtu;
- return 0;
- }
- spin_lock_irq(&gp->lock);
- dev->mtu = new_mtu;
- gp->reset_task_pending = 1;
- schedule_task(&gp->reset_task);
- spin_unlock_irq(&gp->lock);
- flush_scheduled_tasks();
- return 0;
- }
- #define STOP_TRIES 32
- /* Must be invoked under gp->lock. */
- static void gem_stop(struct gem *gp)
- {
- int limit;
- u32 val;
- /* Make sure we won't get any more interrupts */
- writel(0xffffffff, gp->regs + GREG_IMASK);
- /* Reset the chip */
- writel(gp->swrst_base | GREG_SWRST_TXRST | GREG_SWRST_RXRST,
- gp->regs + GREG_SWRST);
- limit = STOP_TRIES;
- do {
- udelay(20);
- val = readl(gp->regs + GREG_SWRST);
- if (limit-- <= 0)
- break;
- } while (val & (GREG_SWRST_TXRST | GREG_SWRST_RXRST));
- if (limit <= 0)
- printk(KERN_ERR "gem: SW reset is ghetto.n");
- }
- /* Must be invoked under gp->lock. */
- static void gem_start_dma(struct gem *gp)
- {
- unsigned long val;
-
- /* We are ready to rock, turn everything on. */
- val = readl(gp->regs + TXDMA_CFG);
- writel(val | TXDMA_CFG_ENABLE, gp->regs + TXDMA_CFG);
- val = readl(gp->regs + RXDMA_CFG);
- writel(val | RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG);
- val = readl(gp->regs + MAC_TXCFG);
- writel(val | MAC_TXCFG_ENAB, gp->regs + MAC_TXCFG);
- val = readl(gp->regs + MAC_RXCFG);
- writel(val | MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
- (void) readl(gp->regs + MAC_RXCFG);
- udelay(100);
- writel(GREG_STAT_TXDONE, gp->regs + GREG_IMASK);
- writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
- }
- /* Link modes of the BCM5400 PHY */
- static int phy_BCM5400_link_table[8][3] = {
- { 0, 0, 0 }, /* No link */
- { 0, 0, 0 }, /* 10BT Half Duplex */
- { 1, 0, 0 }, /* 10BT Full Duplex */
- { 0, 1, 0 }, /* 100BT Half Duplex */
- { 0, 1, 0 }, /* 100BT Half Duplex */
- { 1, 1, 0 }, /* 100BT Full Duplex*/
- { 1, 0, 1 }, /* 1000BT */
- { 1, 0, 1 }, /* 1000BT */
- };
- /* Must be invoked under gp->lock. */
- static void gem_begin_auto_negotiation(struct gem *gp, struct ethtool_cmd *ep)
- {
- u16 ctl;
-
- /* Setup link parameters */
- if (!ep)
- goto start_aneg;
- if (ep->autoneg == AUTONEG_ENABLE) {
- /* TODO: parse ep->advertising */
- gp->link_advertise |= (ADVERTISE_10HALF | ADVERTISE_10FULL);
- gp->link_advertise |= (ADVERTISE_100HALF | ADVERTISE_100FULL);
- /* Can I advertise gigabit here ? I'd need BCM PHY docs... */
- gp->link_cntl = BMCR_ANENABLE;
- } else {
- gp->link_cntl = 0;
- if (ep->speed == SPEED_100)
- gp->link_cntl |= BMCR_SPEED100;
- else if (ep->speed == SPEED_1000 && gp->gigabit_capable)
- /* Hrm... check if this is right... */
- gp->link_cntl |= BMCR_SPD2;
- if (ep->duplex == DUPLEX_FULL)
- gp->link_cntl |= BMCR_FULLDPLX;
- }
- start_aneg:
- if (!gp->hw_running)
- return;
- /* Configure PHY & start aneg */
- ctl = phy_read(gp, MII_BMCR);
- ctl &= ~(BMCR_FULLDPLX|BMCR_SPEED100|BMCR_ANENABLE);
- ctl |= gp->link_cntl;
- if (ctl & BMCR_ANENABLE) {
- ctl |= BMCR_ANRESTART;
- gp->lstate = link_aneg;
- } else {
- gp->lstate = link_force_ok;
- }
- phy_write(gp, MII_BMCR, ctl);
- gp->timer_ticks = 0;
- mod_timer(&gp->link_timer, jiffies + ((12 * HZ) / 10));
- }
- /* Must be invoked under gp->lock. */
- static void gem_read_mii_link_mode(struct gem *gp, int *fd, int *spd, int *pause)
- {
- u32 val;
- *fd = 0;
- *spd = 10;
- *pause = 0;
-
- if (gp->phy_mod == phymod_bcm5400 ||
- gp->phy_mod == phymod_bcm5401 ||
- gp->phy_mod == phymod_bcm5411) {
- int link_mode;
- val = phy_read(gp, MII_BCM5400_AUXSTATUS);
- link_mode = ((val & MII_BCM5400_AUXSTATUS_LINKMODE_MASK) >>
- MII_BCM5400_AUXSTATUS_LINKMODE_SHIFT);
- *fd = phy_BCM5400_link_table[link_mode][0];
- *spd = phy_BCM5400_link_table[link_mode][2] ?
- 1000 :
- (phy_BCM5400_link_table[link_mode][1] ? 100 : 10);
- val = phy_read(gp, MII_LPA);
- if (val & LPA_PAUSE)
- *pause = 1;
- } else {
- val = phy_read(gp, MII_LPA);
- if (val & (LPA_10FULL | LPA_100FULL))
- *fd = 1;
- if (val & (LPA_100FULL | LPA_100HALF))
- *spd = 100;
- if (gp->phy_mod == phymod_m1011) {
- val = phy_read(gp, 0x0a);
- if (val & 0xc00)
- *spd = 1000;
- if (val & 0x800)
- *fd = 1;
- }
- }
- }
- /* A link-up condition has occurred, initialize and enable the
- * rest of the chip.
- *
- * Must be invoked under gp->lock.
- */
- static void gem_set_link_modes(struct gem *gp)
- {
- u32 val;
- int full_duplex, speed, pause;
- full_duplex = 0;
- speed = 10;
- pause = 0;
- if (gp->phy_type == phy_mii_mdio0 ||
- gp->phy_type == phy_mii_mdio1) {
- val = phy_read(gp, MII_BMCR);
- if (val & BMCR_ANENABLE)
- gem_read_mii_link_mode(gp, &full_duplex, &speed, &pause);
- else {
- if (val & BMCR_FULLDPLX)
- full_duplex = 1;
- if (val & BMCR_SPEED100)
- speed = 100;
- }
- } else {
- u32 pcs_lpa = readl(gp->regs + PCS_MIILP);
- if (pcs_lpa & PCS_MIIADV_FD)
- full_duplex = 1;
- speed = 1000;
- }
- if (netif_msg_link(gp))
- printk(KERN_INFO "%s: Link is up at %d Mbps, %s-duplex.n",
- gp->dev->name, speed, (full_duplex ? "full" : "half"));
- val = (MAC_TXCFG_EIPG0 | MAC_TXCFG_NGU);
- if (full_duplex) {
- val |= (MAC_TXCFG_ICS | MAC_TXCFG_ICOLL);
- } else {
- /* MAC_TXCFG_NBO must be zero. */
- }
- writel(val, gp->regs + MAC_TXCFG);
- val = (MAC_XIFCFG_OE | MAC_XIFCFG_LLED);
- if (!full_duplex &&
- (gp->phy_type == phy_mii_mdio0 ||
- gp->phy_type == phy_mii_mdio1)) {
- val |= MAC_XIFCFG_DISE;
- } else if (full_duplex) {
- val |= MAC_XIFCFG_FLED;
- }
- if (speed == 1000)
- val |= (MAC_XIFCFG_GMII);
- writel(val, gp->regs + MAC_XIFCFG);
- /* If gigabit and half-duplex, enable carrier extension
- * mode. Else, disable it.
- */
- if (speed == 1000 && !full_duplex) {
- val = readl(gp->regs + MAC_TXCFG);
- writel(val | MAC_TXCFG_TCE, gp->regs + MAC_TXCFG);
- val = readl(gp->regs + MAC_RXCFG);
- writel(val | MAC_RXCFG_RCE, gp->regs + MAC_RXCFG);
- } else {
- val = readl(gp->regs + MAC_TXCFG);
- writel(val & ~MAC_TXCFG_TCE, gp->regs + MAC_TXCFG);
- val = readl(gp->regs + MAC_RXCFG);
- writel(val & ~MAC_RXCFG_RCE, gp->regs + MAC_RXCFG);
- }
- if (gp->phy_type == phy_serialink ||
- gp->phy_type == phy_serdes) {
- u32 pcs_lpa = readl(gp->regs + PCS_MIILP);
- if (pcs_lpa & (PCS_MIIADV_SP | PCS_MIIADV_AP))
- pause = 1;
- }
- if (netif_msg_link(gp)) {
- if (pause) {
- printk(KERN_INFO "%s: Pause is enabled "
- "(rxfifo: %d off: %d on: %d)n",
- gp->dev->name,
- gp->rx_fifo_sz,
- gp->rx_pause_off,
- gp->rx_pause_on);
- } else {
- printk(KERN_INFO "%s: Pause is disabledn",
- gp->dev->name);
- }
- }
- if (!full_duplex)
- writel(512, gp->regs + MAC_STIME);
- else
- writel(64, gp->regs + MAC_STIME);
- val = readl(gp->regs + MAC_MCCFG);
- if (pause)
- val |= (MAC_MCCFG_SPE | MAC_MCCFG_RPE);
- else
- val &= ~(MAC_MCCFG_SPE | MAC_MCCFG_RPE);
- writel(val, gp->regs + MAC_MCCFG);
- gem_start_dma(gp);
- }
- /* Must be invoked under gp->lock. */
- static int gem_mdio_link_not_up(struct gem *gp)
- {
- u16 val;
-
- if (gp->lstate == link_force_ret) {
- if (netif_msg_link(gp))
- printk(KERN_INFO "%s: Autoneg failed again, keeping"
- " forced moden", gp->dev->name);
- phy_write(gp, MII_BMCR, gp->link_fcntl);
- gp->timer_ticks = 5;
- gp->lstate = link_force_ok;
- } else if (gp->lstate == link_aneg) {
- val = phy_read(gp, MII_BMCR);
- if (netif_msg_link(gp))
- printk(KERN_INFO "%s: switching to forced 100btn",
- gp->dev->name);
- /* Try forced modes. */
- val &= ~(BMCR_ANRESTART | BMCR_ANENABLE);
- val &= ~(BMCR_FULLDPLX);
- val |= BMCR_SPEED100;
- phy_write(gp, MII_BMCR, val);
- gp->timer_ticks = 5;
- gp->lstate = link_force_try;
- } else {
- /* Downgrade from 100 to 10 Mbps if necessary.
- * If already at 10Mbps, warn user about the
- * situation every 10 ticks.
- */
- val = phy_read(gp, MII_BMCR);
- if (val & BMCR_SPEED100) {
- val &= ~BMCR_SPEED100;
- phy_write(gp, MII_BMCR, val);
- gp->timer_ticks = 5;
- if (netif_msg_link(gp))
- printk(KERN_INFO "%s: switching to forced 10btn",
- gp->dev->name);
- } else
- return 1;
- }
- return 0;
- }
- static void gem_init_rings(struct gem *);
- static void gem_init_hw(struct gem *, int);
- static void gem_reset_task(void *data)
- {
- struct gem *gp = (struct gem *) data;
- /* The link went down, we reset the ring, but keep
- * DMA stopped. Todo: Use this function for reset
- * on error as well.
- */
- spin_lock_irq(&gp->lock);
- if (gp->hw_running && gp->opened) {
- /* Make sure we don't get interrupts or tx packets */
- netif_stop_queue(gp->dev);
- writel(0xffffffff, gp->regs + GREG_IMASK);
- /* Reset the chip & rings */
- gem_stop(gp);
- gem_init_rings(gp);
- gem_init_hw(gp,
- (gp->reset_task_pending == 2));
- netif_wake_queue(gp->dev);
- }
- gp->reset_task_pending = 0;
- spin_unlock_irq(&gp->lock);
- }
- static void gem_link_timer(unsigned long data)
- {
- struct gem *gp = (struct gem *) data;
- if (!gp->hw_running)
- return;
- spin_lock_irq(&gp->lock);
- /* If the link of task is still pending, we just
- * reschedule the link timer
- */
- if (gp->reset_task_pending)
- goto restart;
-
- if (gp->phy_type == phy_mii_mdio0 ||
- gp->phy_type == phy_mii_mdio1) {
- u16 val = phy_read(gp, MII_BMSR);
- u16 cntl = phy_read(gp, MII_BMCR);
- int up;
- /* When using autoneg, we really wait for ANEGCOMPLETE or we may
- * get a "transcient" incorrect link state
- */
- if (cntl & BMCR_ANENABLE)
- up = (val & (BMSR_ANEGCOMPLETE | BMSR_LSTATUS)) == (BMSR_ANEGCOMPLETE | BMSR_LSTATUS);
- else
- up = (val & BMSR_LSTATUS) != 0;
- if (up) {
- /* Ok, here we got a link. If we had it due to a forced
- * fallback, and we were configured for autoneg, we do
- * retry a short autoneg pass. If you know your hub is
- * broken, use ethtool ;)
- */
- if (gp->lstate == link_force_try && (gp->link_cntl & BMCR_ANENABLE)) {
- gp->lstate = link_force_ret;
- gp->link_fcntl = phy_read(gp, MII_BMCR);
- gp->timer_ticks = 5;
- if (netif_msg_link(gp))
- printk(KERN_INFO "%s: Got link after fallback, retrying"
- " autoneg once...n", gp->dev->name);
- phy_write(gp, MII_BMCR,
- gp->link_fcntl | BMCR_ANENABLE | BMCR_ANRESTART);
- } else if (gp->lstate != link_up) {
- gp->lstate = link_up;
- if (gp->opened)
- gem_set_link_modes(gp);
- }
- } else {
- int restart = 0;
- /* If the link was previously up, we restart the
- * whole process
- */
- if (gp->lstate == link_up) {
- gp->lstate = link_down;
- if (netif_msg_link(gp))
- printk(KERN_INFO "%s: Link downn",
- gp->dev->name);
- gp->reset_task_pending = 2;
- schedule_task(&gp->reset_task);
- restart = 1;
- } else if (++gp->timer_ticks > 10)
- restart = gem_mdio_link_not_up(gp);
- if (restart) {
- gem_begin_auto_negotiation(gp, NULL);
- goto out_unlock;
- }
- }
- } else {
- u32 val = readl(gp->regs + PCS_MIISTAT);
- if (!(val & PCS_MIISTAT_LS))
- val = readl(gp->regs + PCS_MIISTAT);
- if ((val & PCS_MIISTAT_LS) != 0) {
- gp->lstate = link_up;
- if (gp->opened)
- gem_set_link_modes(gp);
- }
- }
- restart:
- mod_timer(&gp->link_timer, jiffies + ((12 * HZ) / 10));
- out_unlock:
- spin_unlock_irq(&gp->lock);
- }
- /* Must be invoked under gp->lock. */
- static void gem_clean_rings(struct gem *gp)
- {
- struct gem_init_block *gb = gp->init_block;
- struct sk_buff *skb;
- int i;
- dma_addr_t dma_addr;
- for (i = 0; i < RX_RING_SIZE; i++) {
- struct gem_rxd *rxd;
- rxd = &gb->rxd[i];
- if (gp->rx_skbs[i] != NULL) {
- skb = gp->rx_skbs[i];
- dma_addr = le64_to_cpu(rxd->buffer);
- pci_unmap_page(gp->pdev, dma_addr,
- RX_BUF_ALLOC_SIZE(gp),
- PCI_DMA_FROMDEVICE);
- dev_kfree_skb_any(skb);
- gp->rx_skbs[i] = NULL;
- }
- rxd->status_word = 0;
- rxd->buffer = 0;
- }
- for (i = 0; i < TX_RING_SIZE; i++) {
- if (gp->tx_skbs[i] != NULL) {
- struct gem_txd *txd;
- int frag;
- skb = gp->tx_skbs[i];
- gp->tx_skbs[i] = NULL;
- for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
- int ent = i & (TX_RING_SIZE - 1);
- txd = &gb->txd[ent];
- dma_addr = le64_to_cpu(txd->buffer);
- pci_unmap_page(gp->pdev, dma_addr,
- le64_to_cpu(txd->control_word) &
- TXDCTRL_BUFSZ, PCI_DMA_TODEVICE);
- if (frag != skb_shinfo(skb)->nr_frags)
- i++;
- }
- dev_kfree_skb_any(skb);
- }
- }
- }
- /* Must be invoked under gp->lock. */
- static void gem_init_rings(struct gem *gp)
- {
- struct gem_init_block *gb = gp->init_block;
- struct net_device *dev = gp->dev;
- int i;
- dma_addr_t dma_addr;
- gp->rx_new = gp->rx_old = gp->tx_new = gp->tx_old = 0;
- gem_clean_rings(gp);
- for (i = 0; i < RX_RING_SIZE; i++) {
- struct sk_buff *skb;
- struct gem_rxd *rxd = &gb->rxd[i];
- skb = gem_alloc_skb(RX_BUF_ALLOC_SIZE(gp), GFP_ATOMIC);
- if (!skb) {
- rxd->buffer = 0;
- rxd->status_word = 0;
- continue;
- }
- gp->rx_skbs[i] = skb;
- skb->dev = dev;
- skb_put(skb, (ETH_FRAME_LEN + RX_OFFSET));
- dma_addr = pci_map_page(gp->pdev,
- virt_to_page(skb->data),
- ((unsigned long) skb->data &
- ~PAGE_MASK),
- RX_BUF_ALLOC_SIZE(gp),
- PCI_DMA_FROMDEVICE);
- rxd->buffer = cpu_to_le64(dma_addr);
- rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
- skb_reserve(skb, RX_OFFSET);
- }
- for (i = 0; i < TX_RING_SIZE; i++) {
- struct gem_txd *txd = &gb->txd[i];
- txd->control_word = 0;
- txd->buffer = 0;
- }
- }
- /* Must be invoked under gp->lock. */
- static int gem_reset_one_mii_phy(struct gem *gp, int phy_addr)
- {
- u16 val;
- int limit = 10000;
-
- val = __phy_read(gp, MII_BMCR, phy_addr);
- val &= ~BMCR_ISOLATE;
- val |= BMCR_RESET;
- __phy_write(gp, MII_BMCR, val, phy_addr);
- udelay(100);
- while (limit--) {
- val = __phy_read(gp, MII_BMCR, phy_addr);
- if ((val & BMCR_RESET) == 0)
- break;
- udelay(10);
- }
- if ((val & BMCR_ISOLATE) && limit > 0)
- __phy_write(gp, MII_BMCR, val & ~BMCR_ISOLATE, phy_addr);
-
- return (limit <= 0);
- }
- /* Must be invoked under gp->lock. */
- static void gem_init_bcm5201_phy(struct gem *gp)
- {
- u16 data;
- data = phy_read(gp, MII_BCM5201_MULTIPHY);
- data &= ~MII_BCM5201_MULTIPHY_SUPERISOLATE;
- phy_write(gp, MII_BCM5201_MULTIPHY, data);
- }
- /* Must be invoked under gp->lock. */
- static void gem_init_bcm5400_phy(struct gem *gp)
- {
- u16 data;
- /* Configure for gigabit full duplex */
- data = phy_read(gp, MII_BCM5400_AUXCONTROL);
- data |= MII_BCM5400_AUXCONTROL_PWR10BASET;
- phy_write(gp, MII_BCM5400_AUXCONTROL, data);
-
- data = phy_read(gp, MII_BCM5400_GB_CONTROL);
- data |= MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP;
- phy_write(gp, MII_BCM5400_GB_CONTROL, data);
-
- mdelay(10);
- /* Reset and configure cascaded 10/100 PHY */
- gem_reset_one_mii_phy(gp, 0x1f);
-
- data = __phy_read(gp, MII_BCM5201_MULTIPHY, 0x1f);
- data |= MII_BCM5201_MULTIPHY_SERIALMODE;
- __phy_write(gp, MII_BCM5201_MULTIPHY, data, 0x1f);
- data = phy_read(gp, MII_BCM5400_AUXCONTROL);
- data &= ~MII_BCM5400_AUXCONTROL_PWR10BASET;
- phy_write(gp, MII_BCM5400_AUXCONTROL, data);
- }
- /* Must be invoked under gp->lock. */
- static void gem_init_bcm5401_phy(struct gem *gp)
- {
- u16 data;
- int rev;
- rev = phy_read(gp, MII_PHYSID2) & 0x000f;
- if (rev == 0 || rev == 3) {
- /* Some revisions of 5401 appear to need this
- * initialisation sequence to disable, according
- * to OF, "tap power management"
- *
- * WARNING ! OF and Darwin don't agree on the
- * register addresses. OF seem to interpret the
- * register numbers below as decimal
- *
- * Note: This should (and does) match tg3_init_5401phy_dsp
- * in the tg3.c driver. -DaveM
- */
- phy_write(gp, 0x18, 0x0c20);
- phy_write(gp, 0x17, 0x0012);
- phy_write(gp, 0x15, 0x1804);
- phy_write(gp, 0x17, 0x0013);
- phy_write(gp, 0x15, 0x1204);
- phy_write(gp, 0x17, 0x8006);
- phy_write(gp, 0x15, 0x0132);
- phy_write(gp, 0x17, 0x8006);
- phy_write(gp, 0x15, 0x0232);
- phy_write(gp, 0x17, 0x201f);
- phy_write(gp, 0x15, 0x0a20);
- }
-
- /* Configure for gigabit full duplex */
- data = phy_read(gp, MII_BCM5400_GB_CONTROL);
- data |= MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP;
- phy_write(gp, MII_BCM5400_GB_CONTROL, data);
- mdelay(1);
- /* Reset and configure cascaded 10/100 PHY */
- gem_reset_one_mii_phy(gp, 0x1f);
-
- data = __phy_read(gp, MII_BCM5201_MULTIPHY, 0x1f);
- data |= MII_BCM5201_MULTIPHY_SERIALMODE;
- __phy_write(gp, MII_BCM5201_MULTIPHY, data, 0x1f);
- }
- /* Must be invoked under gp->lock. */
- static void gem_init_bcm5411_phy(struct gem *gp)
- {
- u16 data;
- /* Here's some more Apple black magic to setup
- * some voltage stuffs.
- */
- phy_write(gp, 0x1c, 0x8c23);
- phy_write(gp, 0x1c, 0x8ca3);
- phy_write(gp, 0x1c, 0x8c23);
- /* Here, Apple seems to want to reset it, do
- * it as well
- */
- phy_write(gp, MII_BMCR, BMCR_RESET);
- /* Start autoneg */
- phy_write(gp, MII_BMCR,
- (BMCR_ANENABLE | BMCR_FULLDPLX |
- BMCR_ANRESTART | BMCR_SPD2));
- data = phy_read(gp, MII_BCM5400_GB_CONTROL);
- data |= MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP;
- phy_write(gp, MII_BCM5400_GB_CONTROL, data);
- }
- /* Must be invoked under gp->lock. */
- static void gem_init_phy(struct gem *gp)
- {
- u32 mifcfg;
- if (!gp->wake_on_lan && gp->phy_mod == phymod_bcm5201)
- phy_write(gp, MII_BCM5201_INTERRUPT, 0);
- /* Revert MIF CFG setting done on stop_phy */
- mifcfg = readl(gp->regs + MIF_CFG);
- mifcfg &= ~MIF_CFG_BBMODE;
- writel(mifcfg, gp->regs + MIF_CFG);
-
- #ifdef CONFIG_ALL_PPC
- if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE) {
- int i;
- pmac_call_feature(PMAC_FTR_GMAC_PHY_RESET, gp->of_node, 0, 0);
- for (i = 0; i < 32; i++) {
- gp->mii_phy_addr = i;
- if (phy_read(gp, MII_BMCR) != 0xffff)
- break;
- }
- if (i == 32) {
- printk(KERN_WARNING "%s: GMAC PHY not responding !n",
- gp->dev->name);
- return;
- }
- }
- #endif /* CONFIG_ALL_PPC */
- if (gp->pdev->vendor == PCI_VENDOR_ID_SUN &&
- gp->pdev->device == PCI_DEVICE_ID_SUN_GEM) {
- u32 val;
- /* Init datapath mode register. */
- if (gp->phy_type == phy_mii_mdio0 ||
- gp->phy_type == phy_mii_mdio1) {
- val = PCS_DMODE_MGM;
- } else if (gp->phy_type == phy_serialink) {
- val = PCS_DMODE_SM | PCS_DMODE_GMOE;
- } else {
- val = PCS_DMODE_ESM;
- }
- writel(val, gp->regs + PCS_DMODE);
- }
- if (gp->phy_type == phy_mii_mdio0 ||
- gp->phy_type == phy_mii_mdio1) {
- u32 phy_id;
- u16 val;
-
- /* Take PHY out of isloate mode and reset it. */
- gem_reset_one_mii_phy(gp, gp->mii_phy_addr);
- phy_id = (phy_read(gp, MII_PHYSID1) << 16 | phy_read(gp, MII_PHYSID2))
- & 0xfffffff0;
- printk(KERN_INFO "%s: MII PHY ID: %x ", gp->dev->name, phy_id);
- switch(phy_id) {
- case 0x406210:
- gp->phy_mod = phymod_bcm5201;
- gem_init_bcm5201_phy(gp);
- printk("BCM 5201n");
- break;
- case 0x4061e0:
- printk("BCM 5221n");
- gp->phy_mod = phymod_bcm5221;
- break;
- case 0x206040:
- printk("BCM 5400n");
- gp->phy_mod = phymod_bcm5400;
- gem_init_bcm5400_phy(gp);
- gp->gigabit_capable = 1;
- break;
- case 0x206050:
- printk("BCM 5401n");
- gp->phy_mod = phymod_bcm5401;
- gem_init_bcm5401_phy(gp);
- gp->gigabit_capable = 1;
- break;
- case 0x206070:
- printk("BCM 5411n");
- gp->phy_mod = phymod_bcm5411;
- gem_init_bcm5411_phy(gp);
- gp->gigabit_capable = 1;
- break;
- case 0x1410c60:
- printk("M1011 (Marvel ?)n");
- gp->phy_mod = phymod_m1011;
- gp->gigabit_capable = 1;
- break;
- case 0x18074c0:
- printk("Lucentn");
- gp->phy_mod = phymod_generic;
- break;
- case 0x437420:
- printk("Enable Semiconductorn");
- gp->phy_mod = phymod_generic;
- break;
- default:
- printk("Unknown (Using generic mode)n");
- gp->phy_mod = phymod_generic;
- break;
- };
- /* Init advertisement and enable autonegotiation. */
- val = phy_read(gp, MII_BMCR);
- val &= ~BMCR_ANENABLE;
- phy_write(gp, MII_BMCR, val);
- udelay(10);
-
- phy_write(gp, MII_ADVERTISE,
- phy_read(gp, MII_ADVERTISE) |
- (ADVERTISE_10HALF | ADVERTISE_10FULL |
- ADVERTISE_100HALF | ADVERTISE_100FULL));
- } else {
- u32 val;
- int limit;
- /* Reset PCS unit. */
- val = readl(gp->regs + PCS_MIICTRL);
- val |= PCS_MIICTRL_RST;
- writeb(val, gp->regs + PCS_MIICTRL);
- limit = 32;
- while (readl(gp->regs + PCS_MIICTRL) & PCS_MIICTRL_RST) {
- udelay(100);
- if (limit-- <= 0)
- break;
- }
- if (limit <= 0)
- printk(KERN_WARNING "%s: PCS reset bit would not clear.n",
- gp->dev->name);
- /* Make sure PCS is disabled while changing advertisement
- * configuration.
- */
- val = readl(gp->regs + PCS_CFG);
- val &= ~(PCS_CFG_ENABLE | PCS_CFG_TO);
- writel(val, gp->regs + PCS_CFG);
- /* Advertise all capabilities except assymetric
- * pause.
- */
- val = readl(gp->regs + PCS_MIIADV);
- val |= (PCS_MIIADV_FD | PCS_MIIADV_HD |
- PCS_MIIADV_SP | PCS_MIIADV_AP);
- writel(val, gp->regs + PCS_MIIADV);
- /* Enable and restart auto-negotiation, disable wrapback/loopback,
- * and re-enable PCS.
- */
- val = readl(gp->regs + PCS_MIICTRL);
- val |= (PCS_MIICTRL_RAN | PCS_MIICTRL_ANE);
- val &= ~PCS_MIICTRL_WB;
- writel(val, gp->regs + PCS_MIICTRL);
- val = readl(gp->regs + PCS_CFG);
- val |= PCS_CFG_ENABLE;
- writel(val, gp->regs + PCS_CFG);
- /* Make sure serialink loopback is off. The meaning
- * of this bit is logically inverted based upon whether
- * you are in Serialink or SERDES mode.
- */
- val = readl(gp->regs + PCS_SCTRL);
- if (gp->phy_type == phy_serialink)
- val &= ~PCS_SCTRL_LOOP;
- else
- val |= PCS_SCTRL_LOOP;
- writel(val, gp->regs + PCS_SCTRL);
- gp->gigabit_capable = 1;
- }
- /* BMCR_SPD2 is a broadcom 54xx specific thing afaik */
- if (gp->phy_mod != phymod_bcm5400 && gp->phy_mod != phymod_bcm5401 &&
- gp->phy_mod != phymod_bcm5411)
- gp->link_cntl &= ~BMCR_SPD2;
- }
- /* Must be invoked under gp->lock. */
- static void gem_init_dma(struct gem *gp)
- {
- u64 desc_dma = (u64) gp->gblock_dvma;
- u32 val;
- val = (TXDMA_CFG_BASE | (0x7ff << 10) | TXDMA_CFG_PMODE);
- writel(val, gp->regs + TXDMA_CFG);
- writel(desc_dma >> 32, gp->regs + TXDMA_DBHI);
- writel(desc_dma & 0xffffffff, gp->regs + TXDMA_DBLOW);
- desc_dma += (INIT_BLOCK_TX_RING_SIZE * sizeof(struct gem_txd));
- writel(0, gp->regs + TXDMA_KICK);
- val = (RXDMA_CFG_BASE | (RX_OFFSET << 10) |
- ((14 / 2) << 13) | RXDMA_CFG_FTHRESH_128);
- writel(val, gp->regs + RXDMA_CFG);
- writel(desc_dma >> 32, gp->regs + RXDMA_DBHI);
- writel(desc_dma & 0xffffffff, gp->regs + RXDMA_DBLOW);
- writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
- val = (((gp->rx_pause_off / 64) << 0) & RXDMA_PTHRESH_OFF);
- val |= (((gp->rx_pause_on / 64) << 12) & RXDMA_PTHRESH_ON);
- writel(val, gp->regs + RXDMA_PTHRESH);
- if (readl(gp->regs + GREG_BIFCFG) & GREG_BIFCFG_M66EN)
- writel(((5 & RXDMA_BLANK_IPKTS) |
- ((8 << 12) & RXDMA_BLANK_ITIME)),
- gp->regs + RXDMA_BLANK);
- else
- writel(((5 & RXDMA_BLANK_IPKTS) |
- ((4 << 12) & RXDMA_BLANK_ITIME)),
- gp->regs + RXDMA_BLANK);
- }
- /* Must be invoked under gp->lock. */
- static u32
- gem_setup_multicast(struct gem *gp)
- {
- u32 rxcfg = 0;
- int i;
-
- if ((gp->dev->flags & IFF_ALLMULTI) ||
- (gp->dev->mc_count > 256)) {
- for (i=0; i<16; i++)
- writel(0xffff, gp->regs + MAC_HASH0 + (i << 2));
- rxcfg |= MAC_RXCFG_HFE;
- } else if (gp->dev->flags & IFF_PROMISC) {
- rxcfg |= MAC_RXCFG_PROM;
- } else {
- u16 hash_table[16];
- u32 crc;
- struct dev_mc_list *dmi = gp->dev->mc_list;
- int i;
- for (i = 0; i < 16; i++)
- hash_table[i] = 0;
- for (i = 0; i < gp->dev->mc_count; i++) {
- char *addrs = dmi->dmi_addr;
- dmi = dmi->next;
- if (!(*addrs & 1))
- continue;
- crc = ether_crc_le(6, addrs);
- crc >>= 24;
- hash_table[crc >> 4] |= 1 << (15 - (crc & 0xf));
- }
- for (i=0; i<16; i++)
- writel(hash_table[i], gp->regs + MAC_HASH0 + (i << 2));
- rxcfg |= MAC_RXCFG_HFE;
- }
- return rxcfg;
- }
- /* Must be invoked under gp->lock. */
- static void gem_init_mac(struct gem *gp)
- {
- unsigned char *e = &gp->dev->dev_addr[0];
- if (gp->pdev->vendor == PCI_VENDOR_ID_SUN &&
- gp->pdev->device == PCI_DEVICE_ID_SUN_GEM)
- writel(0x1bf0, gp->regs + MAC_SNDPAUSE);
- writel(0x00, gp->regs + MAC_IPG0);
- writel(0x08, gp->regs + MAC_IPG1);
- writel(0x04, gp->regs + MAC_IPG2);
- writel(0x40, gp->regs + MAC_STIME);
- writel(0x40, gp->regs + MAC_MINFSZ);
- /* Ethernet payload + header + FCS + optional VLAN tag. */
- writel(0x20000000 | (gp->dev->mtu + ETH_HLEN + 4 + 4), gp->regs + MAC_MAXFSZ);
- writel(0x07, gp->regs + MAC_PASIZE);
- writel(0x04, gp->regs + MAC_JAMSIZE);
- writel(0x10, gp->regs + MAC_ATTLIM);
- writel(0x8808, gp->regs + MAC_MCTYPE);
- writel((e[5] | (e[4] << 8)) & 0x3ff, gp->regs + MAC_RANDSEED);
- writel((e[4] << 8) | e[5], gp->regs + MAC_ADDR0);
- writel((e[2] << 8) | e[3], gp->regs + MAC_ADDR1);
- writel((e[0] << 8) | e[1], gp->regs + MAC_ADDR2);
- writel(0, gp->regs + MAC_ADDR3);
- writel(0, gp->regs + MAC_ADDR4);
- writel(0, gp->regs + MAC_ADDR5);
- writel(0x0001, gp->regs + MAC_ADDR6);
- writel(0xc200, gp->regs + MAC_ADDR7);
- writel(0x0180, gp->regs + MAC_ADDR8);
- writel(0, gp->regs + MAC_AFILT0);
- writel(0, gp->regs + MAC_AFILT1);
- writel(0, gp->regs + MAC_AFILT2);
- writel(0, gp->regs + MAC_AF21MSK);
- writel(0, gp->regs + MAC_AF0MSK);
- gp->mac_rx_cfg = gem_setup_multicast(gp);
- writel(0, gp->regs + MAC_NCOLL);
- writel(0, gp->regs + MAC_FASUCC);
- writel(0, gp->regs + MAC_ECOLL);
- writel(0, gp->regs + MAC_LCOLL);
- writel(0, gp->regs + MAC_DTIMER);
- writel(0, gp->regs + MAC_PATMPS);
- writel(0, gp->regs + MAC_RFCTR);
- writel(0, gp->regs + MAC_LERR);
- writel(0, gp->regs + MAC_AERR);
- writel(0, gp->regs + MAC_FCSERR);
- writel(0, gp->regs + MAC_RXCVERR);
- /* Clear RX/TX/MAC/XIF config, we will set these up and enable
- * them once a link is established.
- */
- writel(0, gp->regs + MAC_TXCFG);
- writel(gp->mac_rx_cfg, gp->regs + MAC_RXCFG);
- writel(0, gp->regs + MAC_MCCFG);
- writel(0, gp->regs + MAC_XIFCFG);
- /* Setup MAC interrupts. We want to get all of the interesting
- * counter expiration events, but we do not want to hear about
- * normal rx/tx as the DMA engine tells us that.
- */
- writel(MAC_TXSTAT_XMIT, gp->regs + MAC_TXMASK);
- writel(MAC_RXSTAT_RCV, gp->regs + MAC_RXMASK);
- /* Don't enable even the PAUSE interrupts for now, we
- * make no use of those events other than to record them.
- */
- writel(0xffffffff, gp->regs + MAC_MCMASK);
- }
- /* Must be invoked under gp->lock. */
- static void gem_init_pause_thresholds(struct gem *gp)
- {
- /* Calculate pause thresholds. Setting the OFF threshold to the
- * full RX fifo size effectively disables PAUSE generation which
- * is what we do for 10/100 only GEMs which have FIFOs too small
- * to make real gains from PAUSE.
- */
- if (gp->rx_fifo_sz <= (2 * 1024)) {
- gp->rx_pause_off = gp->rx_pause_on = gp->rx_fifo_sz;
- } else {
- int max_frame = (gp->dev->mtu + ETH_HLEN + 4 + 4 + 64) & ~63;
- int off = (gp->rx_fifo_sz - (max_frame * 2));
- int on = off - max_frame;
- gp->rx_pause_off = off;
- gp->rx_pause_on = on;
- }
- {
- u32 cfg;
- cfg = 0;
- #if !defined(CONFIG_SPARC64) && !defined(CONFIG_ALPHA)
- cfg |= GREG_CFG_IBURST;
- #endif
- cfg |= ((31 << 1) & GREG_CFG_TXDMALIM);
- cfg |= ((31 << 6) & GREG_CFG_RXDMALIM);
- writel(cfg, gp->regs + GREG_CFG);
- }
- }
- static int gem_check_invariants(struct gem *gp)
- {
- struct pci_dev *pdev = gp->pdev;
- u32 mif_cfg;
- /* On Apple's sungem, we can't rely on registers as the chip
- * was been powered down by the firmware. The PHY is looked
- * up later on.
- */
- if (pdev->vendor == PCI_VENDOR_ID_APPLE) {
- gp->phy_type = phy_mii_mdio0;
- gp->tx_fifo_sz = readl(gp->regs + TXDMA_FSZ) * 64;
- gp->rx_fifo_sz = readl(gp->regs + RXDMA_FSZ) * 64;
- gp->swrst_base = 0;
- return 0;
- }
- mif_cfg = readl(gp->regs + MIF_CFG);
- if (pdev->vendor == PCI_VENDOR_ID_SUN &&
- pdev->device == PCI_DEVICE_ID_SUN_RIO_GEM) {
- /* One of the MII PHYs _must_ be present
- * as this chip has no gigabit PHY.
- */
- if ((mif_cfg & (MIF_CFG_MDI0 | MIF_CFG_MDI1)) == 0) {
- printk(KERN_ERR PFX "RIO GEM lacks MII phy, mif_cfg[%08x]n",
- mif_cfg);
- return -1;
- }
- }
- /* Determine initial PHY interface type guess. MDIO1 is the
- * external PHY and thus takes precedence over MDIO0.
- */
-
- if (mif_cfg & MIF_CFG_MDI1) {
- gp->phy_type = phy_mii_mdio1;
- mif_cfg |= MIF_CFG_PSELECT;
- writel(mif_cfg, gp->regs + MIF_CFG);
- } else if (mif_cfg & MIF_CFG_MDI0) {
- gp->phy_type = phy_mii_mdio0;
- mif_cfg &= ~MIF_CFG_PSELECT;
- writel(mif_cfg, gp->regs + MIF_CFG);
- } else {
- gp->phy_type = phy_serialink;
- }
- if (gp->phy_type == phy_mii_mdio1 ||
- gp->phy_type == phy_mii_mdio0) {
- int i;
- for (i = 0; i < 32; i++) {
- gp->mii_phy_addr = i;
- if (phy_read(gp, MII_BMCR) != 0xffff)
- break;
- }
- if (i == 32) {
- if (pdev->device != PCI_DEVICE_ID_SUN_GEM) {
- printk(KERN_ERR PFX "RIO MII phy will not respond.n");
- return -1;
- }
- gp->phy_type = phy_serdes;
- }
- }
- /* Fetch the FIFO configurations now too. */
- gp->tx_fifo_sz = readl(gp->regs + TXDMA_FSZ) * 64;
- gp->rx_fifo_sz = readl(gp->regs + RXDMA_FSZ) * 64;
- if (pdev->vendor == PCI_VENDOR_ID_SUN) {
- if (pdev->device == PCI_DEVICE_ID_SUN_GEM) {
- if (gp->tx_fifo_sz != (9 * 1024) ||
- gp->rx_fifo_sz != (20 * 1024)) {
- printk(KERN_ERR PFX "GEM has bogus fifo sizes tx(%d) rx(%d)n",
- gp->tx_fifo_sz, gp->rx_fifo_sz);
- return -1;
- }
- gp->swrst_base = 0;
- } else {
- if (gp->tx_fifo_sz != (2 * 1024) ||
- gp->rx_fifo_sz != (2 * 1024)) {
- printk(KERN_ERR PFX "RIO GEM has bogus fifo sizes tx(%d) rx(%d)n",
- gp->tx_fifo_sz, gp->rx_fifo_sz);
- return -1;
- }
- gp->swrst_base = (64 / 4) << GREG_SWRST_CACHE_SHIFT;
- }
- }
- return 0;
- }
- /* Must be invoked under gp->lock. */
- static void gem_init_hw(struct gem *gp, int restart_link)
- {
- /* On Apple's gmac, I initialize the PHY only after
- * setting up the chip. It appears the gigabit PHYs
- * don't quite like beeing talked to on the GII when
- * the chip is not running, I suspect it might not
- * be clocked at that point. --BenH
- */
- if (restart_link)
- gem_init_phy(gp);
- gem_init_pause_thresholds(gp);
- gem_init_dma(gp);
- gem_init_mac(gp);
- if (restart_link) {
- /* Default aneg parameters */
- gp->timer_ticks = 0;
- gp->lstate = link_down;
- /* Can I advertise gigabit here ? I'd need BCM PHY docs... */
- gem_begin_auto_negotiation(gp, NULL);
- } else {
- if (gp->lstate == link_up)
- gem_set_link_modes(gp);
- }
- }
- #ifdef CONFIG_ALL_PPC
- /* Enable the chip's clock and make sure it's config space is
- * setup properly. There appear to be no need to restore the
- * base addresses.
- */
- static void gem_apple_powerup(struct gem *gp)
- {
- u16 cmd;
- u32 mif_cfg;
- pmac_call_feature(PMAC_FTR_GMAC_ENABLE, gp->of_node, 0, 1);
- current->state = TASK_UNINTERRUPTIBLE;
- schedule_timeout((21 * HZ) / 1000);
- pci_read_config_word(gp->pdev, PCI_COMMAND, &cmd);
- cmd |= PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE;
- pci_write_config_word(gp->pdev, PCI_COMMAND, cmd);
- pci_write_config_byte(gp->pdev, PCI_LATENCY_TIMER, 6);
- pci_write_config_byte(gp->pdev, PCI_CACHE_LINE_SIZE, 8);
- mdelay(1);
-
- mif_cfg = readl(gp->regs + MIF_CFG);
- mif_cfg &= ~(MIF_CFG_PSELECT|MIF_CFG_POLL|MIF_CFG_BBMODE|MIF_CFG_MDI1);
- mif_cfg |= MIF_CFG_MDI0;
- writel(mif_cfg, gp->regs + MIF_CFG);
- writel(PCS_DMODE_MGM, gp->regs + PCS_DMODE);
- writel(MAC_XIFCFG_OE, gp->regs + MAC_XIFCFG);
- mdelay(1);
- }
- /* Turn off the chip's clock */
- static void gem_apple_powerdown(struct gem *gp)
- {
- pmac_call_feature(PMAC_FTR_GMAC_ENABLE, gp->of_node, 0, 0);
- }
- #endif /* CONFIG_ALL_PPC */
- /* Must be invoked under gp->lock. */
- static void gem_stop_phy(struct gem *gp)
- {
- u32 mifcfg;
- if (!gp->wake_on_lan && gp->phy_mod == phymod_bcm5201)
- phy_write(gp, MII_BCM5201_INTERRUPT, 0);
- /* Make sure we aren't polling PHY status change. We
- * don't currently use that feature though
- */
- mifcfg = readl(gp->regs + MIF_CFG);
- mifcfg &= ~MIF_CFG_POLL;
- writel(mifcfg, gp->regs + MIF_CFG);
- /* Here's a strange hack used by both MacOS 9 and X */
- phy_write(gp, MII_LPA, phy_read(gp, MII_LPA));
- if (gp->wake_on_lan) {
- /* Setup wake-on-lan */
- } else
- writel(0, gp->regs + MAC_RXCFG);
- writel(0, gp->regs + MAC_TXCFG);
- writel(0, gp->regs + MAC_XIFCFG);
- writel(0, gp->regs + TXDMA_CFG);
- writel(0, gp->regs + RXDMA_CFG);
- if (!gp->wake_on_lan) {
- gem_stop(gp);
- writel(MAC_TXRST_CMD, gp->regs + MAC_TXRST);
- writel(MAC_RXRST_CMD, gp->regs + MAC_RXRST);
- if (gp->phy_mod == phymod_bcm5400 || gp->phy_mod == phymod_bcm5401 ||
- gp->phy_mod == phymod_bcm5411) {
- #if 0 /* Commented out in Darwin... someone has those dawn docs ? */
- phy_write(gp, MII_BMCR, BMCR_PDOWN);
- #endif
- } else if (gp->phy_mod == phymod_bcm5201 || gp->phy_mod == phymod_bcm5221) {
- #if 0 /* Commented out in Darwin... someone has those dawn docs ? */
- u16 val = phy_read(gp, MII_BCM5201_AUXMODE2)
- phy_write(gp, MII_BCM5201_AUXMODE2,
- val & ~MII_BCM5201_AUXMODE2_LOWPOWER);
- #endif
- phy_write(gp, MII_BCM5201_MULTIPHY, MII_BCM5201_MULTIPHY_SUPERISOLATE);
- } else if (gp->phy_mod == phymod_m1011)
- phy_write(gp, MII_BMCR, BMCR_PDOWN);
- /* According to Apple, we must set the MDIO pins to this begnign
- * state or we may 1) eat more current, 2) damage some PHYs
- */
- writel(mifcfg | MIF_CFG_BBMODE, gp->regs + MIF_CFG);
- writel(0, gp->regs + MIF_BBCLK);
- writel(0, gp->regs + MIF_BBDATA);
- writel(0, gp->regs + MIF_BBOENAB);
- writel(MAC_XIFCFG_GMII | MAC_XIFCFG_LBCK, gp->regs + MAC_XIFCFG);
- (void) readl(gp->regs + MAC_XIFCFG);
- }
- }
- /* Shut down the chip, must be called with pm_sem held. */
- static void gem_shutdown(struct gem *gp)
- {
- /* Make us not-running to avoid timers respawning */
- gp->hw_running = 0;
- /* Stop the link timer */
- del_timer_sync(&gp->link_timer);
- /* Stop the reset task */
- while (gp->reset_task_pending)
- schedule();
-
- /* Actually stop the chip */
- spin_lock_irq(&gp->lock);
- if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE) {
- gem_stop_phy(gp);
- spin_unlock_irq(&gp->lock);
- #ifdef CONFIG_ALL_PPC
- /* Power down the chip */
- gem_apple_powerdown(gp);
- #endif /* CONFIG_ALL_PPC */
- } else {
- gem_stop(gp);
- spin_unlock_irq(&gp->lock);
- }
- }
- static void gem_pm_task(void *data)
- {
- struct gem *gp = (struct gem *) data;
- /* We assume if we can't lock the pm_sem, then open() was
- * called again (or suspend()), and we can safely ignore
- * the PM request
- */
- if (down_trylock(&gp->pm_sem))
- return;
- /* Driver was re-opened or already shut down */
- if (gp->opened || !gp->hw_running) {
- up(&gp->pm_sem);
- return;
- }
- gem_shutdown(gp);
- up(&gp->pm_sem);
- }
- static void gem_pm_timer(unsigned long data)
- {
- struct gem *gp = (struct gem *) data;
- schedule_task(&gp->pm_task);
- }
- static int gem_open(struct net_device *dev)
- {
- struct gem *gp = dev->priv;
- int hw_was_up;
- down(&gp->pm_sem);
- hw_was_up = gp->hw_running;
- /* Stop the PM timer/task */
- del_timer(&gp->pm_timer);
- flush_scheduled_tasks();
- /* The power-management semaphore protects the hw_running
- * etc. state so it is safe to do this bit without gp->lock
- */
- if (!gp->hw_running) {
- #ifdef CONFIG_ALL_PPC
- /* First, we need to bring up the chip */
- if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE) {
- gem_apple_powerup(gp);
- gem_check_invariants(gp);
- }
- #endif /* CONFIG_ALL_PPC */
- /* Reset the chip */
- spin_lock_irq(&gp->lock);
- gem_stop(gp);
- spin_unlock_irq(&gp->lock);
- gp->hw_running = 1;
- }
- spin_lock_irq(&gp->lock);
- /* We can now request the interrupt as we know it's masked
- * on the controller
- */
- if (request_irq(gp->pdev->irq, gem_interrupt,
- SA_SHIRQ, dev->name, (void *)dev)) {
- spin_unlock_irq(&gp->lock);
- printk(KERN_ERR "%s: failed to request irq !n", gp->dev->name);
- #ifdef CONFIG_ALL_PPC
- if (!hw_was_up && gp->pdev->vendor == PCI_VENDOR_ID_APPLE)
- gem_apple_powerdown(gp);
- #endif /* CONFIG_ALL_PPC */
- /* Fire the PM timer that will shut us down in about 10 seconds */
- gp->pm_timer.expires = jiffies + 10*HZ;
- add_timer(&gp->pm_timer);
- up(&gp->pm_sem);
- return -EAGAIN;
- }
- /* Allocate & setup ring buffers */
- gem_init_rings(gp);
- /* Init & setup chip hardware */
- gem_init_hw(gp, !hw_was_up);
- gp->opened = 1;
- spin_unlock_irq(&gp->lock);
- up(&gp->pm_sem);
- return 0;
- }
- static int gem_close(struct net_device *dev)
- {
- struct gem *gp = dev->priv;
- /* Make sure we don't get distracted by suspend/resume */
- down(&gp->pm_sem);
- /* Stop traffic, mark us closed */
- spin_lock_irq(&gp->lock);
- gp->opened = 0;
- writel(0xffffffff, gp->regs + GREG_IMASK);
- netif_stop_queue(dev);
- /* Stop chip */
- gem_stop(gp);
- /* Get rid of rings */
- gem_clean_rings(gp);
- /* Bye, the pm timer will finish the job */
- free_irq(gp->pdev->irq, (void *) dev);
- spin_unlock_irq(&gp->lock);
- /* Fire the PM timer that will shut us down in about 10 seconds */
- gp->pm_timer.expires = jiffies + 10*HZ;
- add_timer(&gp->pm_timer);
- up(&gp->pm_sem);
-
- return 0;
- }
- #ifdef CONFIG_PM
- static int gem_suspend(struct pci_dev *pdev, u32 state)
- {
- struct net_device *dev = pci_get_drvdata(pdev);
- struct gem *gp = dev->priv;
- /* We hold the PM semaphore during entire driver
- * sleep time
- */
- down(&gp->pm_sem);
- printk(KERN_INFO "%s: suspending, WakeOnLan %sn",
- dev->name, gp->wake_on_lan ? "enabled" : "disabled");
-
- /* If the driver is opened, we stop the DMA */
- if (gp->opened) {
- spin_lock_irq(&gp->lock);
- /* Stop traffic, mark us closed */
- netif_device_detach(dev);
- writel(0xffffffff, gp->regs + GREG_IMASK);
- /* Stop chip */
- gem_stop(gp);
- /* Get rid of ring buffers */
- gem_clean_rings(gp);
- spin_unlock_irq(&gp->lock);
- if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE)
- disable_irq(gp->pdev->irq);
- }
- if (gp->hw_running) {
- /* Kill PM timer if any */
- del_timer_sync(&gp->pm_timer);
- flush_scheduled_tasks();
- gem_shutdown(gp);
- }
- return 0;
- }
- static int gem_resume(struct pci_dev *pdev)
- {
- struct net_device *dev = pci_get_drvdata(pdev);
- struct gem *gp = dev->priv;
- printk(KERN_INFO "%s: resumingn", dev->name);
- if (gp->opened) {
- #ifdef CONFIG_ALL_PPC
- /* First, we need to bring up the chip */
- if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE) {
- gem_apple_powerup(gp);
- gem_check_invariants(gp);
- }
- #endif /* CONFIG_ALL_PPC */
- spin_lock_irq(&gp->lock);
- gem_stop(gp);
- gp->hw_running = 1;
- gem_init_rings(gp);
- gem_init_hw(gp, 1);
- spin_unlock_irq(&gp->lock);
- netif_device_attach(dev);
- if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE)
- enable_irq(gp->pdev->irq);
- }
- up(&gp->pm_sem);
- return 0;
- }
- #endif /* CONFIG_PM */
- static struct net_device_stats *gem_get_stats(struct net_device *dev)
- {
- struct gem *gp = dev->priv;
- struct net_device_stats *stats = &gp->net_stats;
- spin_lock_irq(&gp->lock);
- if (gp->hw_running) {
- stats->rx_crc_errors += readl(gp->regs + MAC_FCSERR);
- writel(0, gp->regs + MAC_FCSERR);
- stats->rx_frame_errors += readl(gp->regs + MAC_AERR);
- writel(0, gp->regs + MAC_AERR);
- stats->rx_length_errors += readl(gp->regs + MAC_LERR);
- writel(0, gp->regs + MAC_LERR);
- stats->tx_aborted_errors += readl(gp->regs + MAC_ECOLL);
- stats->collisions +=
- (readl(gp->regs + MAC_ECOLL) +
- readl(gp->regs + MAC_LCOLL));
- writel(0, gp->regs + MAC_ECOLL);
- writel(0, gp->regs + MAC_LCOLL);
- }
- spin_unlock_irq(&gp->lock);
- return &gp->net_stats;
- }
- static void gem_set_multicast(struct net_device *dev)
- {
- struct gem *gp = dev->priv;
- u32 rxcfg, rxcfg_new;
- int limit = 10000;
-
- if (!gp->hw_running)
- return;
-
- spin_lock_irq(&gp->lock);
- netif_stop_queue(dev);
- rxcfg = readl(gp->regs + MAC_RXCFG);
- gp->mac_rx_cfg = rxcfg_new = gem_setup_multicast(gp);
-
- writel(rxcfg & ~MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
- while (readl(gp->regs + MAC_RXCFG) & MAC_RXCFG_ENAB) {
- if (!limit--)
- break;
- udelay(10);
- }
- rxcfg &= ~(MAC_RXCFG_PROM | MAC_RXCFG_HFE);
- rxcfg |= rxcfg_new;
- writel(rxcfg, gp->regs + MAC_RXCFG);
- netif_wake_queue(dev);
- spin_unlock_irq(&gp->lock);
- }
- /* Eventually add support for changing the advertisement
- * on autoneg.
- */
- static int gem_ethtool_ioctl(struct net_device *dev, void *ep_user)
- {
- struct gem *gp = dev->priv;
- u16 bmcr;
- int full_duplex, speed, pause;
- struct ethtool_cmd ecmd;
- if (copy_from_user(&ecmd, ep_user, sizeof(ecmd)))
- return -EFAULT;
-
- switch(ecmd.cmd) {
- case ETHTOOL_GDRVINFO: {
- struct ethtool_drvinfo info = { cmd: ETHTOOL_GDRVINFO };
- strncpy(info.driver, DRV_NAME, ETHTOOL_BUSINFO_LEN);
- strncpy(info.version, DRV_VERSION, ETHTOOL_BUSINFO_LEN);
- info.fw_version[0] = ' ';
- strncpy(info.bus_info, gp->pdev->slot_name, ETHTOOL_BUSINFO_LEN);
- info.regdump_len = 0; /*SUNGEM_NREGS;*/
- if (copy_to_user(ep_user, &info, sizeof(info)))
- return -EFAULT;
- return 0;
- }
- case ETHTOOL_GSET:
- ecmd.supported =
- (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
- SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
- SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII);
- if (gp->gigabit_capable)
- ecmd.supported |=
- (SUPPORTED_1000baseT_Half |
- SUPPORTED_1000baseT_Full);
- /* XXX hardcoded stuff for now */
- ecmd.port = PORT_MII;
- ecmd.transceiver = XCVR_EXTERNAL;
- ecmd.phy_address = 0; /* XXX fixed PHYAD */
- /* Record PHY settings if HW is on. */
- spin_lock_irq(&gp->lock);
- if (gp->hw_running) {
- bmcr = phy_read(gp, MII_BMCR);
- gem_read_mii_link_mode(gp, &full_duplex, &speed, &pause);
- } else
- bmcr = 0;
- spin_unlock_irq(&gp->lock);
- if (bmcr & BMCR_ANENABLE) {
- ecmd.autoneg = AUTONEG_ENABLE;
- ecmd.speed = speed == 10 ? SPEED_10 : (speed == 1000 ? SPEED_1000 : SPEED_100);
- ecmd.duplex = full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
- } else {
- ecmd.autoneg = AUTONEG_DISABLE;
- ecmd.speed =
- (bmcr & BMCR_SPEED100) ?
- SPEED_100 : SPEED_10;
- ecmd.duplex =
- (bmcr & BMCR_FULLDPLX) ?
- DUPLEX_FULL : DUPLEX_HALF;
- }
- if (copy_to_user(ep_user, &ecmd, sizeof(ecmd)))
- return -EFAULT;
- return 0;
- case ETHTOOL_SSET:
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- /* Verify the settings we care about. */
- if (ecmd.autoneg != AUTONEG_ENABLE &&
- ecmd.autoneg != AUTONEG_DISABLE)
- return -EINVAL;
- if (ecmd.autoneg == AUTONEG_DISABLE &&
- ((ecmd.speed != SPEED_100 &&
- ecmd.speed != SPEED_10) ||
- (ecmd.duplex != DUPLEX_HALF &&
- ecmd.duplex != DUPLEX_FULL)))
- return -EINVAL;
- /* Apply settings and restart link process. */
- spin_lock_irq(&gp->lock);
- gem_begin_auto_negotiation(gp, &ecmd);
- spin_unlock_irq(&gp->lock);
- return 0;
- case ETHTOOL_NWAY_RST:
- if ((gp->link_cntl & BMCR_ANENABLE) == 0)
- return -EINVAL;
- /* Restart link process. */
- spin_lock_irq(&gp->lock);
- gem_begin_auto_negotiation(gp, NULL);
- spin_unlock_irq(&gp->lock);
- return 0;
- case ETHTOOL_GWOL:
- case ETHTOOL_SWOL:
- break; /* todo */
- /* get link status */
- case ETHTOOL_GLINK: {
- struct ethtool_value edata = { cmd: ETHTOOL_GLINK };
- edata.data = (gp->lstate == link_up);
- if (copy_to_user(ep_user, &edata, sizeof(edata)))
- return -EFAULT;
- return 0;
- }
- /* get message-level */
- case ETHTOOL_GMSGLVL: {
- struct ethtool_value edata = { cmd: ETHTOOL_GMSGLVL };
- edata.data = gp->msg_enable;
- if (copy_to_user(ep_user, &edata, sizeof(edata)))
- return -EFAULT;
- return 0;
- }
- /* set message-level */
- case ETHTOOL_SMSGLVL: {
- struct ethtool_value edata;
- if (copy_from_user(&edata, ep_user, sizeof(edata)))
- return -EFAULT;
- gp->msg_enable = edata.data;
- return 0;
- }
- #if 0
- case ETHTOOL_GREGS: {
- struct ethtool_regs regs;
- u32 *regbuf;
- int r = 0;
- if (copy_from_user(®s, useraddr, sizeof(regs)))
- return -EFAULT;
-
- if (regs.len > SUNGEM_NREGS) {
- regs.len = SUNGEM_NREGS;
- }
- regs.version = 0;
- if (copy_to_user(useraddr, ®s, sizeof(regs)))
- return -EFAULT;
- if (!gp->hw_running)
- return -ENODEV;
- useraddr += offsetof(struct ethtool_regs, data);
- /* Use kmalloc to avoid bloating the stack */
- regbuf = kmalloc(4 * SUNGEM_NREGS, GFP_KERNEL);
- if (!regbuf)
- return -ENOMEM;
- spin_lock_irq(&np->lock);
- gem_get_regs(gp, regbuf);
- spin_unlock_irq(&np->lock);
- if (copy_to_user(useraddr, regbuf, regs.len*sizeof(u32)))
- r = -EFAULT;
- kfree(regbuf);
- return r;
- }
- #endif
- };
- return -EOPNOTSUPP;
- }
- static int gem_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
- {
- struct gem *gp = dev->priv;
- struct mii_ioctl_data *data = (struct mii_ioctl_data *)&ifr->ifr_data;
- int rc = -EOPNOTSUPP;
-
- /* Hold the PM semaphore while doing ioctl's or we may collide
- * with open/close and power management and oops.
- */
- down(&gp->pm_sem);
-
- switch (cmd) {
- case SIOCETHTOOL:
- rc = gem_ethtool_ioctl(dev, ifr->ifr_data);
- break;
- case SIOCGMIIPHY: /* Get address of MII PHY in use. */
- data->phy_id = gp->mii_phy_addr;
- /* Fallthrough... */
- case SIOCGMIIREG: /* Read MII PHY register. */
- data->val_out = __phy_read(gp, data->reg_num & 0x1f, data->phy_id & 0x1f);
- rc = 0;
- break;
- case SIOCSMIIREG: /* Write MII PHY register. */
- if (!capable(CAP_NET_ADMIN)) {
- rc = -EPERM;
- } else {
- __phy_write(gp, data->reg_num & 0x1f, data->val_in, data->phy_id & 0x1f);
- rc = 0;
- }
- break;
- };
- up(&gp->pm_sem);
-
- return rc;
- }
- #if (!defined(__sparc__) && !defined(CONFIG_ALL_PPC))
- /* Fetch MAC address from vital product data of PCI ROM. */
- static void find_eth_addr_in_vpd(void *rom_base, int len, unsigned char *dev_addr)
- {
- int this_offset;
- for (this_offset = 0x20; this_offset < len; this_offset++) {
- void *p = rom_base + this_offset;
- int i;
- 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;
- for (i = 0; i < 6; i++)
- dev_addr[i] = readb(p + i);
- break;
- }
- }
- static void get_gem_mac_nonobp(struct pci_dev *pdev, unsigned char *dev_addr)
- {
- u32 rom_reg_orig;
- void *p;
- 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), 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 /* not Sparc and not PPC */
- static int __devinit gem_get_device_address(struct gem *gp)
- {
- #if defined(__sparc__) || defined(CONFIG_ALL_PPC)
- struct net_device *dev = gp->dev;
- #endif
- #if defined(__sparc__)
- struct pci_dev *pdev = gp->pdev;
- struct pcidev_cookie *pcp = pdev->sysdata;
- int node = -1;
- if (pcp != NULL) {
- node = pcp->prom_node;
- if (prom_getproplen(node, "local-mac-address") == 6)
- prom_getproperty(node, "local-mac-address",
- dev->dev_addr, 6);
- else
- node = -1;
- }
- if (node == -1)
- memcpy(dev->dev_addr, idprom->id_ethaddr, 6);
- #elif defined(CONFIG_ALL_PPC)
- unsigned char *addr;
- addr = get_property(gp->of_node, "local-mac-address", NULL);
- if (addr == NULL) {
- printk("n");
- printk(KERN_ERR "%s: can't get mac-addressn", dev->name);
- return -1;
- }
- memcpy(dev->dev_addr, addr, MAX_ADDR_LEN);
- #else
- get_gem_mac_nonobp(gp->pdev, gp->dev->dev_addr);
- #endif
- return 0;
- }
- static int __devinit gem_init_one(struct pci_dev *pdev,
- const struct pci_device_id *ent)
- {
- static int gem_version_printed = 0;
- unsigned long gemreg_base, gemreg_len;
- struct net_device *dev;
- struct gem *gp;
- int i, err, pci_using_dac;
- if (gem_version_printed++ == 0)
- printk(KERN_INFO "%s", version);
- /* Apple gmac note: during probe, the chip is powered up by
- * the arch code to allow the code below to work (and to let
- * the chip be probed on the config space. It won't stay powered
- * up until the interface is brought up however, so we can't rely
- * on register configuration done at this point.
- */
- err = pci_enable_device(pdev);
- if (err) {
- printk(KERN_ERR PFX "Cannot enable MMIO operation, "
- "aborting.n");
- return err;
- }
- pci_set_master(pdev);
- /* Configure DMA attributes. */
- /* All of the GEM documentation states that 64-bit DMA addressing
- * is fully supported and should work just fine. However the
- * front end for RIO based GEMs is different and only supports
- * 32-bit addressing.
- *
- * For now we assume the various PPC GEMs are 32-bit only as well.
- */
- if (pdev->vendor == PCI_VENDOR_ID_SUN &&
- pdev->device == PCI_DEVICE_ID_SUN_GEM &&
- !pci_set_dma_mask(pdev, (u64) 0xffffffffffffffff)) {
- pci_using_dac = 1;
- } else {
- err = pci_set_dma_mask(pdev, (u64) 0xffffffff);
- if (err) {
- printk(KERN_ERR PFX "No usable DMA configuration, "
- "aborting.n");
- return err;
- }
- pci_using_dac = 0;
- }
- gemreg_base = pci_resource_start(pdev, 0);
- gemreg_len = pci_resource_len(pdev, 0);
- if ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) != 0) {
- printk(KERN_ERR PFX "Cannot find proper PCI device "
- "base address, aborting.n");
- return -ENODEV;
- }
- dev = alloc_etherdev(sizeof(*gp));
- if (!dev) {
- printk(KERN_ERR PFX "Etherdev alloc failed, aborting.n");
- return -ENOMEM;
- }
- SET_MODULE_OWNER(dev);
- gp = dev->priv;
- if (pci_request_regions(pdev, dev->name)) {
- printk(KERN_ERR PFX "Cannot obtain PCI resources, "
- "aborting.n");
- goto err_out_free_netdev;
- }
- gp->pdev = pdev;
- dev->base_addr = (long) pdev;
- gp->dev = dev;
- gp->msg_enable = (gem_debug < 0 ? DEFAULT_MSG : gem_debug);
- spin_lock_init(&gp->lock);
- init_MUTEX(&gp->pm_sem);
- init_timer(&gp->link_timer);
- gp->link_timer.function = gem_link_timer;
- gp->link_timer.data = (unsigned long) gp;
- init_timer(&gp->pm_timer);
- gp->pm_timer.function = gem_pm_timer;
- gp->pm_timer.data = (unsigned long) gp;
- INIT_TQUEUE(&gp->pm_task, gem_pm_task, gp);
- INIT_TQUEUE(&gp->reset_task, gem_reset_task, gp);
-
- /* Default link parameters */
- if (link_mode >= 0 && link_mode <= 6)
- gp->link_cntl = link_modes[link_mode];
- else
- gp->link_cntl = BMCR_ANENABLE;
- gp->lstate = link_down;
- gp->timer_ticks = 0;
- gp->regs = (unsigned long) ioremap(gemreg_base, gemreg_len);
- if (gp->regs == 0UL) {
- printk(KERN_ERR PFX "Cannot map device registers, "
- "aborting.n");
- goto err_out_free_res;
- }
- /* On Apple, we power the chip up now in order for check
- * invariants to work, but also because the firmware might
- * not have properly shut down the PHY.
- */
- #ifdef CONFIG_ALL_PPC
- if (pdev->vendor == PCI_VENDOR_ID_APPLE)
- gem_apple_powerup(gp);
- #endif
- spin_lock_irq(&gp->lock);
- gem_stop(gp);
- spin_unlock_irq(&gp->lock);
- if (gem_check_invariants(gp))
- goto err_out_iounmap;
- spin_lock_irq(&gp->lock);
- gp->hw_running = 1;
- gem_init_phy(gp);
- gem_begin_auto_negotiation(gp, NULL);
- spin_unlock_irq(&gp->lock);
- /* It is guarenteed that the returned buffer will be at least
- * PAGE_SIZE aligned.
- */
- gp->init_block = (struct gem_init_block *)
- pci_alloc_consistent(pdev, sizeof(struct gem_init_block),
- &gp->gblock_dvma);
- if (!gp->init_block) {
- printk(KERN_ERR PFX "Cannot allocate init block, "
- "aborting.n");
- goto err_out_iounmap;
- }
- #ifdef CONFIG_ALL_PPC
- gp->of_node = pci_device_to_OF_node(pdev);
- #endif
- if (gem_get_device_address(gp))
- goto err_out_free_consistent;
- if (register_netdev(dev)) {
- printk(KERN_ERR PFX "Cannot register net device, "
- "aborting.n");
- goto err_out_free_consistent;
- }
- printk(KERN_INFO "%s: Sun GEM (PCI) 10/100/1000BaseT Ethernet ",
- dev->name);
- for (i = 0; i < 6; i++)
- printk("%2.2x%c", dev->dev_addr[i],
- i == 5 ? ' ' : ':');
- printk("n");
- pci_set_drvdata(pdev, dev);
- dev->open = gem_open;
- dev->stop = gem_close;
- dev->hard_start_xmit = gem_start_xmit;
- dev->get_stats = gem_get_stats;
- dev->set_multicast_list = gem_set_multicast;
- dev->do_ioctl = gem_ioctl;
- dev->tx_timeout = gem_tx_timeout;
- dev->watchdog_timeo = 5 * HZ;
- dev->change_mtu = gem_change_mtu;
- dev->irq = pdev->irq;
- dev->dma = 0;
- /* GEM can do it all... */
- dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
- if (pci_using_dac)
- dev->features |= NETIF_F_HIGHDMA;
- /* Fire the PM timer that will shut us down in about 10 seconds */
- gp->pm_timer.expires = jiffies + 10*HZ;
- add_timer(&gp->pm_timer);
- return 0;
- err_out_free_consistent:
- pci_free_consistent(pdev,
- sizeof(struct gem_init_block),
- gp->init_block,
- gp->gblock_dvma);
- err_out_iounmap:
- down(&gp->pm_sem);
- /* Stop the PM timer & task */
- del_timer_sync(&gp->pm_timer);
- flush_scheduled_tasks();
- if (gp->hw_running)
- gem_shutdown(gp);
- up(&gp->pm_sem);
- iounmap((void *) gp->regs);
- err_out_free_res:
- pci_release_regions(pdev);
- err_out_free_netdev:
- kfree(dev);
- return -ENODEV;
- }
- static void __devexit gem_remove_one(struct pci_dev *pdev)
- {
- struct net_device *dev = pci_get_drvdata(pdev);
- if (dev) {
- struct gem *gp = dev->priv;
- unregister_netdev(dev);
- down(&gp->pm_sem);
- /* Stop the PM timer & task */
- del_timer_sync(&gp->pm_timer);
- flush_scheduled_tasks();
- if (gp->hw_running)
- gem_shutdown(gp);
- up(&gp->pm_sem);
- pci_free_consistent(pdev,
- sizeof(struct gem_init_block),
- gp->init_block,
- gp->gblock_dvma);
- iounmap((void *) gp->regs);
- pci_release_regions(pdev);
- kfree(dev);
- pci_set_drvdata(pdev, NULL);
- }
- }
- static struct pci_driver gem_driver = {
- name: GEM_MODULE_NAME,
- id_table: gem_pci_tbl,
- probe: gem_init_one,
- remove: __devexit_p(gem_remove_one),
- #ifdef CONFIG_PM
- suspend: gem_suspend,
- resume: gem_resume,
- #endif /* CONFIG_PM */
- };
- static int __init gem_init(void)
- {
- return pci_module_init(&gem_driver);
- }
- static void __exit gem_cleanup(void)
- {
- pci_unregister_driver(&gem_driver);
- }
- module_init(gem_init);
- module_exit(gem_cleanup);