diff options
Diffstat (limited to 'drivers/net/cxgb3/vsc8211.c')
| -rw-r--r-- | drivers/net/cxgb3/vsc8211.c | 196 |
1 files changed, 184 insertions, 12 deletions
diff --git a/drivers/net/cxgb3/vsc8211.c b/drivers/net/cxgb3/vsc8211.c index 68e6334c206a..306c2dc4ab34 100644 --- a/drivers/net/cxgb3/vsc8211.c +++ b/drivers/net/cxgb3/vsc8211.c @@ -33,28 +33,40 @@ /* VSC8211 PHY specific registers. */ enum { + VSC8211_SIGDET_CTRL = 19, + VSC8211_EXT_CTRL = 23, VSC8211_INTR_ENABLE = 25, VSC8211_INTR_STATUS = 26, + VSC8211_LED_CTRL = 27, VSC8211_AUX_CTRL_STAT = 28, + VSC8211_EXT_PAGE_AXS = 31, }; enum { VSC_INTR_RX_ERR = 1 << 0, - VSC_INTR_MS_ERR = 1 << 1, /* master/slave resolution error */ - VSC_INTR_CABLE = 1 << 2, /* cable impairment */ - VSC_INTR_FALSE_CARR = 1 << 3, /* false carrier */ - VSC_INTR_MEDIA_CHG = 1 << 4, /* AMS media change */ - VSC_INTR_RX_FIFO = 1 << 5, /* Rx FIFO over/underflow */ - VSC_INTR_TX_FIFO = 1 << 6, /* Tx FIFO over/underflow */ - VSC_INTR_DESCRAMBL = 1 << 7, /* descrambler lock-lost */ - VSC_INTR_SYMBOL_ERR = 1 << 8, /* symbol error */ - VSC_INTR_NEG_DONE = 1 << 10, /* autoneg done */ - VSC_INTR_NEG_ERR = 1 << 11, /* autoneg error */ - VSC_INTR_LINK_CHG = 1 << 13, /* link change */ - VSC_INTR_ENABLE = 1 << 15, /* interrupt enable */ + VSC_INTR_MS_ERR = 1 << 1, /* master/slave resolution error */ + VSC_INTR_CABLE = 1 << 2, /* cable impairment */ + VSC_INTR_FALSE_CARR = 1 << 3, /* false carrier */ + VSC_INTR_MEDIA_CHG = 1 << 4, /* AMS media change */ + VSC_INTR_RX_FIFO = 1 << 5, /* Rx FIFO over/underflow */ + VSC_INTR_TX_FIFO = 1 << 6, /* Tx FIFO over/underflow */ + VSC_INTR_DESCRAMBL = 1 << 7, /* descrambler lock-lost */ + VSC_INTR_SYMBOL_ERR = 1 << 8, /* symbol error */ + VSC_INTR_NEG_DONE = 1 << 10, /* autoneg done */ + VSC_INTR_NEG_ERR = 1 << 11, /* autoneg error */ + VSC_INTR_DPLX_CHG = 1 << 12, /* duplex change */ + VSC_INTR_LINK_CHG = 1 << 13, /* link change */ + VSC_INTR_SPD_CHG = 1 << 14, /* speed change */ + VSC_INTR_ENABLE = 1 << 15, /* interrupt enable */ +}; + +enum { + VSC_CTRL_CLAUSE37_VIEW = 1 << 4, /* Switch to Clause 37 view */ + VSC_CTRL_MEDIA_MODE_HI = 0xf000 /* High part of media mode select */ }; #define CFG_CHG_INTR_MASK (VSC_INTR_LINK_CHG | VSC_INTR_NEG_ERR | \ + VSC_INTR_DPLX_CHG | VSC_INTR_SPD_CHG | \ VSC_INTR_NEG_DONE) #define INTR_MASK (CFG_CHG_INTR_MASK | VSC_INTR_TX_FIFO | VSC_INTR_RX_FIFO | \ VSC_INTR_ENABLE) @@ -184,6 +196,112 @@ static int vsc8211_get_link_status(struct cphy *cphy, int *link_ok, return 0; } +static int vsc8211_get_link_status_fiber(struct cphy *cphy, int *link_ok, + int *speed, int *duplex, int *fc) +{ + unsigned int bmcr, status, lpa, adv; + int err, sp = -1, dplx = -1, pause = 0; + + err = mdio_read(cphy, 0, MII_BMCR, &bmcr); + if (!err) + err = mdio_read(cphy, 0, MII_BMSR, &status); + if (err) + return err; + + if (link_ok) { + /* + * BMSR_LSTATUS is latch-low, so if it is 0 we need to read it + * once more to get the current link state. + */ + if (!(status & BMSR_LSTATUS)) + err = mdio_read(cphy, 0, MII_BMSR, &status); + if (err) + return err; + *link_ok = (status & BMSR_LSTATUS) != 0; + } + if (!(bmcr & BMCR_ANENABLE)) { + dplx = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF; + if (bmcr & BMCR_SPEED1000) + sp = SPEED_1000; + else if (bmcr & BMCR_SPEED100) + sp = SPEED_100; + else + sp = SPEED_10; + } else if (status & BMSR_ANEGCOMPLETE) { + err = mdio_read(cphy, 0, MII_LPA, &lpa); + if (!err) + err = mdio_read(cphy, 0, MII_ADVERTISE, &adv); + if (err) + return err; + + if (adv & lpa & ADVERTISE_1000XFULL) { + dplx = DUPLEX_FULL; + sp = SPEED_1000; + } else if (adv & lpa & ADVERTISE_1000XHALF) { + dplx = DUPLEX_HALF; + sp = SPEED_1000; + } + + if (fc && dplx == DUPLEX_FULL) { + if (lpa & adv & ADVERTISE_1000XPAUSE) + pause = PAUSE_RX | PAUSE_TX; + else if ((lpa & ADVERTISE_1000XPAUSE) && + (adv & lpa & ADVERTISE_1000XPSE_ASYM)) + pause = PAUSE_TX; + else if ((lpa & ADVERTISE_1000XPSE_ASYM) && + (adv & ADVERTISE_1000XPAUSE)) + pause = PAUSE_RX; + } + } + if (speed) + *speed = sp; + if (duplex) + *duplex = dplx; + if (fc) + *fc = pause; + return 0; +} + +/* + * Enable/disable auto MDI/MDI-X in forced link speed mode. + */ +static int vsc8211_set_automdi(struct cphy *phy, int enable) +{ + int err; + + err = mdio_write(phy, 0, VSC8211_EXT_PAGE_AXS, 0x52b5); + if (err) + return err; + + err = mdio_write(phy, 0, 18, 0x12); + if (err) + return err; + + err = mdio_write(phy, 0, 17, enable ? 0x2803 : 0x3003); + if (err) + return err; + + err = mdio_write(phy, 0, 16, 0x87fa); + if (err) + return err; + + err = mdio_write(phy, 0, VSC8211_EXT_PAGE_AXS, 0); + if (err) + return err; + + return 0; +} + +int vsc8211_set_speed_duplex(struct cphy *phy, int speed, int duplex) +{ + int err; + + err = t3_set_phy_speed_duplex(phy, speed, duplex); + if (!err) + err = vsc8211_set_automdi(phy, 1); + return err; +} + static int vsc8211_power_down(struct cphy *cphy, int enable) { return t3_mdio_change_bits(cphy, 0, MII_BMCR, BMCR_PDOWN, @@ -221,12 +339,66 @@ static struct cphy_ops vsc8211_ops = { .power_down = vsc8211_power_down, }; +static struct cphy_ops vsc8211_fiber_ops = { + .reset = vsc8211_reset, + .intr_enable = vsc8211_intr_enable, + .intr_disable = vsc8211_intr_disable, + .intr_clear = vsc8211_intr_clear, + .intr_handler = vsc8211_intr_handler, + .autoneg_enable = vsc8211_autoneg_enable, + .autoneg_restart = vsc8211_autoneg_restart, + .advertise = t3_phy_advertise_fiber, + .set_speed_duplex = t3_set_phy_speed_duplex, + .get_link_status = vsc8211_get_link_status_fiber, + .power_down = vsc8211_power_down, +}; + int t3_vsc8211_phy_prep(struct cphy *phy, struct adapter *adapter, int phy_addr, const struct mdio_ops *mdio_ops) { + int err; + unsigned int val; + cphy_init(phy, adapter, phy_addr, &vsc8211_ops, mdio_ops, SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Full | SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_MII | SUPPORTED_TP | SUPPORTED_IRQ, "10/100/1000BASE-T"); + msleep(20); /* PHY needs ~10ms to start responding to MDIO */ + + err = mdio_read(phy, 0, VSC8211_EXT_CTRL, &val); + if (err) + return err; + if (val & VSC_CTRL_MEDIA_MODE_HI) { + /* copper interface, just need to configure the LEDs */ + return mdio_write(phy, 0, VSC8211_LED_CTRL, 0x100); + } + + phy->caps = SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | + SUPPORTED_MII | SUPPORTED_FIBRE | SUPPORTED_IRQ; + phy->desc = "1000BASE-X"; + phy->ops = &vsc8211_fiber_ops; + + err = mdio_write(phy, 0, VSC8211_EXT_PAGE_AXS, 1); + if (err) + return err; + + err = mdio_write(phy, 0, VSC8211_SIGDET_CTRL, 1); + if (err) + return err; + + err = mdio_write(phy, 0, VSC8211_EXT_PAGE_AXS, 0); + if (err) + return err; + + err = mdio_write(phy, 0, VSC8211_EXT_CTRL, + val | VSC_CTRL_CLAUSE37_VIEW); + if (err) + return err; + + err = vsc8211_reset(phy, 0); + if (err) + return err; + + udelay(5); /* delay after reset before next SMI */ return 0; } |