Commit-Id: 9b1e36566c5fafbcc732c971acfcf8580332931a From: Divy Le Ray Date: Wed, 8 Oct 2008 17:39:31 -0700 Acked-by: Karsten Keil Subject: [PATCH] cxgb3: commnonize LASI phy code Reference: bnc#446739 Add generic code to manage interrupt driven PHYs. Do not reset the phy after link parameters update, the new values might get lost. Return early from link change notification when the link parameters remain unchanged. Signed-off-by: Divy Le Ray Signed-off-by: David S. Miller Index: linux-2.6.27/drivers/net/cxgb3/ael1002.c =================================================================== --- linux-2.6.27.orig/drivers/net/cxgb3/ael1002.c +++ linux-2.6.27/drivers/net/cxgb3/ael1002.c @@ -39,9 +39,6 @@ enum { AEL1002_PWR_DOWN_LO = 0xc012, AEL1002_XFI_EQL = 0xc015, AEL1002_LB_EN = 0xc017, - - LASI_CTRL = 0x9002, - LASI_STAT = 0x9005 }; static void ael100x_txon(struct cphy *phy) @@ -134,33 +131,6 @@ static int ael1006_reset(struct cphy *ph return t3_phy_reset(phy, MDIO_DEV_PMA_PMD, wait); } -static int ael1006_intr_enable(struct cphy *phy) -{ - return mdio_write(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, 1); -} - -static int ael1006_intr_disable(struct cphy *phy) -{ - return mdio_write(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, 0); -} - -static int ael1006_intr_clear(struct cphy *phy) -{ - u32 val; - - return mdio_read(phy, MDIO_DEV_PMA_PMD, LASI_STAT, &val); -} - -static int ael1006_intr_handler(struct cphy *phy) -{ - unsigned int status; - int err = mdio_read(phy, MDIO_DEV_PMA_PMD, LASI_STAT, &status); - - if (err) - return err; - return (status & 1) ? cphy_cause_link_change : 0; -} - static int ael1006_power_down(struct cphy *phy, int enable) { return t3_mdio_change_bits(phy, MDIO_DEV_PMA_PMD, MII_BMCR, @@ -169,10 +139,10 @@ static int ael1006_power_down(struct cph static struct cphy_ops ael1006_ops = { .reset = ael1006_reset, - .intr_enable = ael1006_intr_enable, - .intr_disable = ael1006_intr_disable, - .intr_clear = ael1006_intr_clear, - .intr_handler = ael1006_intr_handler, + .intr_enable = t3_phy_lasi_intr_enable, + .intr_disable = t3_phy_lasi_intr_disable, + .intr_clear = t3_phy_lasi_intr_clear, + .intr_handler = t3_phy_lasi_intr_handler, .get_link_status = ael100x_get_link_status, .power_down = ael1006_power_down, }; @@ -189,10 +159,10 @@ int t3_ael1006_phy_prep(struct cphy *phy static struct cphy_ops qt2045_ops = { .reset = ael1006_reset, - .intr_enable = ael1006_intr_enable, - .intr_disable = ael1006_intr_disable, - .intr_clear = ael1006_intr_clear, - .intr_handler = ael1006_intr_handler, + .intr_enable = t3_phy_lasi_intr_enable, + .intr_disable = t3_phy_lasi_intr_disable, + .intr_clear = t3_phy_lasi_intr_clear, + .intr_handler = t3_phy_lasi_intr_handler, .get_link_status = ael100x_get_link_status, .power_down = ael1006_power_down, }; Index: linux-2.6.27/drivers/net/cxgb3/common.h =================================================================== --- linux-2.6.27.orig/drivers/net/cxgb3/common.h +++ linux-2.6.27/drivers/net/cxgb3/common.h @@ -522,7 +522,20 @@ enum { MDIO_DEV_PMA_PMD = 1, MDIO_DEV_WIS = 2, MDIO_DEV_PCS = 3, - MDIO_DEV_XGXS = 4 + MDIO_DEV_XGXS = 4, + MDIO_DEV_ANEG = 7, + MDIO_DEV_VEND1 = 30, + MDIO_DEV_VEND2 = 31 +}; + +/* LASI control and status registers */ +enum { + RX_ALARM_CTRL = 0x9000, + TX_ALARM_CTRL = 0x9001, + LASI_CTRL = 0x9002, + RX_ALARM_STAT = 0x9003, + TX_ALARM_STAT = 0x9004, + LASI_STAT = 0x9005 }; /* PHY loopback direction */ @@ -665,6 +678,10 @@ int t3_mdio_change_bits(struct cphy *phy int t3_phy_reset(struct cphy *phy, int mmd, int wait); int t3_phy_advertise(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); +int t3_phy_lasi_intr_clear(struct cphy *phy); +int t3_phy_lasi_intr_handler(struct cphy *phy); void t3_intr_enable(struct adapter *adapter); void t3_intr_disable(struct adapter *adapter); Index: linux-2.6.27/drivers/net/cxgb3/cxgb3_main.c =================================================================== --- linux-2.6.27.orig/drivers/net/cxgb3/cxgb3_main.c +++ linux-2.6.27/drivers/net/cxgb3/cxgb3_main.c @@ -1586,11 +1586,22 @@ static int speed_duplex_to_caps(int spee static int set_settings(struct net_device *dev, struct ethtool_cmd *cmd) { + int cap; struct port_info *p = netdev_priv(dev); struct link_config *lc = &p->link_config; - if (!(lc->supported & SUPPORTED_Autoneg)) - return -EOPNOTSUPP; /* can't change speed/duplex */ + if (!(lc->supported & SUPPORTED_Autoneg)) { + /* + * PHY offers a single speed/duplex. See if that's what's + * being requested. + */ + if (cmd->autoneg == AUTONEG_DISABLE) { + cap = speed_duplex_to_caps(cmd->speed, cmd->duplex); + if (lc->supported & cap) + return 0; + } + return -EINVAL; + } if (cmd->autoneg == AUTONEG_DISABLE) { int cap = speed_duplex_to_caps(cmd->speed, cmd->duplex); @@ -2281,7 +2292,7 @@ static int cxgb_ioctl(struct net_device mmd = data->phy_id >> 8; if (!mmd) mmd = MDIO_DEV_PCS; - else if (mmd > MDIO_DEV_XGXS) + else if (mmd > MDIO_DEV_VEND2) return -EINVAL; ret = @@ -2307,7 +2318,7 @@ static int cxgb_ioctl(struct net_device mmd = data->phy_id >> 8; if (!mmd) mmd = MDIO_DEV_PCS; - else if (mmd > MDIO_DEV_XGXS) + else if (mmd > MDIO_DEV_VEND2) return -EINVAL; ret = Index: linux-2.6.27/drivers/net/cxgb3/t3_hw.c =================================================================== --- linux-2.6.27.orig/drivers/net/cxgb3/t3_hw.c +++ linux-2.6.27/drivers/net/cxgb3/t3_hw.c @@ -442,6 +442,33 @@ int t3_set_phy_speed_duplex(struct cphy return mdio_write(phy, 0, MII_BMCR, ctl); } +int t3_phy_lasi_intr_enable(struct cphy *phy) +{ + return mdio_write(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, 1); +} + +int t3_phy_lasi_intr_disable(struct cphy *phy) +{ + return mdio_write(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, 0); +} + +int t3_phy_lasi_intr_clear(struct cphy *phy) +{ + u32 val; + + return mdio_read(phy, MDIO_DEV_PMA_PMD, LASI_STAT, &val); +} + +int t3_phy_lasi_intr_handler(struct cphy *phy) +{ + unsigned int status; + int err = mdio_read(phy, MDIO_DEV_PMA_PMD, LASI_STAT, &status); + + if (err) + return err; + return (status & 1) ? cphy_cause_link_change : 0; +} + static const struct adapter_info t3_adap_info[] = { {2, 0, F_GPIO2_OEN | F_GPIO4_OEN | @@ -1132,6 +1159,15 @@ void t3_link_changed(struct adapter *ada phy->ops->get_link_status(phy, &link_ok, &speed, &duplex, &fc); + if (lc->requested_fc & PAUSE_AUTONEG) + fc &= lc->requested_fc; + else + fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX); + + if (link_ok == lc->link_ok && speed == lc->speed && + duplex == lc->duplex && fc == lc->fc) + return; /* nothing changed */ + if (link_ok != lc->link_ok && adapter->params.rev > 0 && uses_xaui(adapter)) { if (link_ok) @@ -1142,10 +1178,6 @@ void t3_link_changed(struct adapter *ada lc->link_ok = link_ok; lc->speed = speed < 0 ? SPEED_INVALID : speed; lc->duplex = duplex < 0 ? DUPLEX_INVALID : duplex; - if (lc->requested_fc & PAUSE_AUTONEG) - fc &= lc->requested_fc; - else - fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX); if (link_ok && speed >= 0 && lc->autoneg == AUTONEG_ENABLE) { /* Set MAC speed, duplex, and flow control to match PHY. */ @@ -1191,7 +1223,6 @@ int t3_link_start(struct cphy *phy, stru fc); /* Also disables autoneg */ phy->ops->set_speed_duplex(phy, lc->speed, lc->duplex); - phy->ops->reset(phy, 0); } else phy->ops->autoneg_enable(phy); } else {