diff options
Diffstat (limited to 'drivers/net/tg3.c')
| -rw-r--r-- | drivers/net/tg3.c | 128 |
1 files changed, 121 insertions, 7 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 538232586ee..ce04c64a8a6 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -32,6 +32,7 @@ #include <linux/skbuff.h> #include <linux/ethtool.h> #include <linux/mii.h> +#include <linux/phy.h> #include <linux/if_vlan.h> #include <linux/ip.h> #include <linux/tcp.h> @@ -835,6 +836,115 @@ static int tg3_bmcr_reset(struct tg3 *tp) return 0; } +static int tg3_mdio_read(struct mii_bus *bp, int mii_id, int reg) +{ + struct tg3 *tp = (struct tg3 *)bp->priv; + u32 val; + + if (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_PAUSED) + return -EAGAIN; + + if (tg3_readphy(tp, reg, &val)) + return -EIO; + + return val; +} + +static int tg3_mdio_write(struct mii_bus *bp, int mii_id, int reg, u16 val) +{ + struct tg3 *tp = (struct tg3 *)bp->priv; + + if (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_PAUSED) + return -EAGAIN; + + if (tg3_writephy(tp, reg, val)) + return -EIO; + + return 0; +} + +static int tg3_mdio_reset(struct mii_bus *bp) +{ + return 0; +} + +static void tg3_mdio_start(struct tg3 *tp) +{ + if (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_INITED) { + mutex_lock(&tp->mdio_bus.mdio_lock); + tp->tg3_flags3 &= ~TG3_FLG3_MDIOBUS_PAUSED; + mutex_unlock(&tp->mdio_bus.mdio_lock); + } + + tp->mi_mode &= ~MAC_MI_MODE_AUTO_POLL; + tw32_f(MAC_MI_MODE, tp->mi_mode); + udelay(80); +} + +static void tg3_mdio_stop(struct tg3 *tp) +{ + if (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_INITED) { + mutex_lock(&tp->mdio_bus.mdio_lock); + tp->tg3_flags3 |= TG3_FLG3_MDIOBUS_PAUSED; + mutex_unlock(&tp->mdio_bus.mdio_lock); + } +} + +static int tg3_mdio_init(struct tg3 *tp) +{ + int i; + u32 reg; + struct mii_bus *mdio_bus = &tp->mdio_bus; + + tg3_mdio_start(tp); + + if (!(tp->tg3_flags3 & TG3_FLG3_USE_PHYLIB) || + (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_INITED)) + return 0; + + memset(mdio_bus, 0, sizeof(*mdio_bus)); + + mdio_bus->name = "tg3 mdio bus"; + snprintf(mdio_bus->id, MII_BUS_ID_SIZE, "%x", + (tp->pdev->bus->number << 8) | tp->pdev->devfn); + mdio_bus->priv = tp; + mdio_bus->dev = &tp->pdev->dev; + mdio_bus->read = &tg3_mdio_read; + mdio_bus->write = &tg3_mdio_write; + mdio_bus->reset = &tg3_mdio_reset; + mdio_bus->phy_mask = ~(1 << PHY_ADDR); + mdio_bus->irq = &tp->mdio_irq[0]; + + for (i = 0; i < PHY_MAX_ADDR; i++) + mdio_bus->irq[i] = PHY_POLL; + + /* The bus registration will look for all the PHYs on the mdio bus. + * Unfortunately, it does not ensure the PHY is powered up before + * accessing the PHY ID registers. A chip reset is the + * quickest way to bring the device back to an operational state.. + */ + if (tg3_readphy(tp, MII_BMCR, ®) || (reg & BMCR_PDOWN)) + tg3_bmcr_reset(tp); + + i = mdiobus_register(mdio_bus); + if (!i) + tp->tg3_flags3 |= TG3_FLG3_MDIOBUS_INITED; + else + printk(KERN_WARNING "%s: mdiobus_reg failed (0x%x)\n", + tp->dev->name, i); + + return i; +} + +static void tg3_mdio_fini(struct tg3 *tp) +{ + if (tp->tg3_flags3 & TG3_FLG3_MDIOBUS_INITED) { + tp->tg3_flags3 &= ~TG3_FLG3_MDIOBUS_INITED; + mdiobus_unregister(&tp->mdio_bus); + tp->tg3_flags3 &= ~TG3_FLG3_MDIOBUS_PAUSED; + } +} + /* tp->lock is held. */ static void tg3_wait_for_event_ack(struct tg3 *tp) { @@ -5386,6 +5496,8 @@ static int tg3_chip_reset(struct tg3 *tp) tg3_nvram_lock(tp); + tg3_mdio_stop(tp); + /* No matching tg3_nvram_unlock() after this because * chip reset below will undo the nvram lock. */ @@ -5537,6 +5649,8 @@ static int tg3_chip_reset(struct tg3 *tp) tw32_f(MAC_MODE, 0); udelay(40); + tg3_mdio_start(tp); + err = tg3_poll_fw(tp); if (err) return err; @@ -7168,10 +7282,6 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy) tw32_f(MAC_RX_MODE, tp->rx_mode); udelay(10); - tp->mi_mode &= ~MAC_MI_MODE_AUTO_POLL; - tw32_f(MAC_MI_MODE, tp->mi_mode); - udelay(80); - tw32(MAC_LED_CTRL, tp->led_ctrl); tw32(MAC_MI_STAT, MAC_MI_STAT_LNKSTAT_ATTN_ENAB); @@ -11850,9 +11960,9 @@ static int __devinit tg3_get_invariants(struct tg3 *tp) GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5700_BX) tp->coalesce_mode |= HOSTCC_MODE_32BYTE; - /* Initialize MAC MI mode, polling disabled. */ - tw32_f(MAC_MI_MODE, tp->mi_mode); - udelay(80); + err = tg3_mdio_init(tp); + if (err) + return err; /* Initialize data/descriptor byte/word swapping. */ val = tr32(GRC_MODE); @@ -13052,6 +13162,10 @@ static void __devexit tg3_remove_one(struct pci_dev *pdev) struct tg3 *tp = netdev_priv(dev); flush_scheduled_work(); + + if (tp->tg3_flags3 & TG3_FLG3_USE_PHYLIB) + tg3_mdio_fini(tp); + unregister_netdev(dev); if (tp->aperegs) { iounmap(tp->aperegs); |