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cxgb3: Add 1G fiber support 

Add support for 1G optical Vitesse PHY.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Divy Le Ray 2008-10-08 17:40:28 -07:00 committed by David S. Miller
parent 1e8820256f
commit 0ce2f03bad
3 changed files with 208 additions and 12 deletions
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1
drivers/net/cxgb3/common.h
View File

@ -691,6 +691,7 @@ int t3_mdio_change_bits(struct cphy *phy, int mmd, int reg, unsigned int clear,
unsigned int set);
int t3_phy_reset(struct cphy *phy, int mmd, int wait);
int t3_phy_advertise(struct cphy *phy, unsigned int advert);
int t3_phy_advertise_fiber(struct cphy *phy, unsigned int advert);
int t3_set_phy_speed_duplex(struct cphy *phy, int speed, int duplex);
int t3_phy_lasi_intr_enable(struct cphy *phy);
int t3_phy_lasi_intr_disable(struct cphy *phy);

23
drivers/net/cxgb3/t3_hw.c
View File

@ -407,6 +407,29 @@ int t3_phy_advertise(struct cphy *phy, unsigned int advert)
return mdio_write(phy, 0, MII_ADVERTISE, val);
}
/**
* t3_phy_advertise_fiber - set fiber PHY advertisement register
* @phy: the PHY to operate on
* @advert: bitmap of capabilities the PHY should advertise
*
* Sets a fiber PHY's advertisement register to advertise the
* requested capabilities.
*/
int t3_phy_advertise_fiber(struct cphy *phy, unsigned int advert)
{
unsigned int val = 0;
if (advert & ADVERTISED_1000baseT_Half)
val |= ADVERTISE_1000XHALF;
if (advert & ADVERTISED_1000baseT_Full)
val |= ADVERTISE_1000XFULL;
if (advert & ADVERTISED_Pause)
val |= ADVERTISE_1000XPAUSE;
if (advert & ADVERTISED_Asym_Pause)
val |= ADVERTISE_1000XPSE_ASYM;
return mdio_write(phy, 0, MII_ADVERTISE, val);
}
/**
* t3_set_phy_speed_duplex - force PHY speed and duplex
* @phy: the PHY to operate on

196
drivers/net/cxgb3/vsc8211.c
View File

@ -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;
}