Commit 80be4434 authored by Michael Chan's avatar Michael Chan Committed by David S. Miller

[BNX2]: Improve SerDes handling.

1. Add support for 2.5Gbps forced speed setting.
2. Remove a long udelay() loop and change to msleep().
3. Other misc. SerDes fixes.
Signed-off-by: default avatarMichael Chan <mchan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7510873d
......@@ -860,7 +860,7 @@ bnx2_set_link(struct bnx2 *bp)
u32 bmsr;
u8 link_up;
if (bp->loopback == MAC_LOOPBACK) {
if (bp->loopback == MAC_LOOPBACK || bp->loopback == PHY_LOOPBACK) {
bp->link_up = 1;
return 0;
}
......@@ -902,6 +902,7 @@ bnx2_set_link(struct bnx2 *bp)
u32 bmcr;
bnx2_read_phy(bp, MII_BMCR, &bmcr);
bmcr &= ~BCM5708S_BMCR_FORCE_2500;
if (!(bmcr & BMCR_ANENABLE)) {
bnx2_write_phy(bp, MII_BMCR, bmcr |
BMCR_ANENABLE);
......@@ -988,7 +989,21 @@ bnx2_setup_serdes_phy(struct bnx2 *bp)
u32 new_bmcr;
int force_link_down = 0;
if (CHIP_NUM(bp) == CHIP_NUM_5708) {
bnx2_read_phy(bp, MII_ADVERTISE, &adv);
adv &= ~(ADVERTISE_1000XFULL | ADVERTISE_1000XHALF);
bnx2_read_phy(bp, MII_BMCR, &bmcr);
new_bmcr = bmcr & ~(BMCR_ANENABLE | BCM5708S_BMCR_FORCE_2500);
new_bmcr |= BMCR_SPEED1000;
if (bp->req_line_speed == SPEED_2500) {
new_bmcr |= BCM5708S_BMCR_FORCE_2500;
bnx2_read_phy(bp, BCM5708S_UP1, &up1);
if (!(up1 & BCM5708S_UP1_2G5)) {
up1 |= BCM5708S_UP1_2G5;
bnx2_write_phy(bp, BCM5708S_UP1, up1);
force_link_down = 1;
}
} else if (CHIP_NUM(bp) == CHIP_NUM_5708) {
bnx2_read_phy(bp, BCM5708S_UP1, &up1);
if (up1 & BCM5708S_UP1_2G5) {
up1 &= ~BCM5708S_UP1_2G5;
......@@ -997,12 +1012,6 @@ bnx2_setup_serdes_phy(struct bnx2 *bp)
}
}
bnx2_read_phy(bp, MII_ADVERTISE, &adv);
adv &= ~(ADVERTISE_1000XFULL | ADVERTISE_1000XHALF);
bnx2_read_phy(bp, MII_BMCR, &bmcr);
new_bmcr = bmcr & ~BMCR_ANENABLE;
new_bmcr |= BMCR_SPEED1000;
if (bp->req_duplex == DUPLEX_FULL) {
adv |= ADVERTISE_1000XFULL;
new_bmcr |= BMCR_FULLDPLX;
......@@ -1023,6 +1032,7 @@ bnx2_setup_serdes_phy(struct bnx2 *bp)
bp->link_up = 0;
netif_carrier_off(bp->dev);
bnx2_write_phy(bp, MII_BMCR, new_bmcr);
bnx2_report_link(bp);
}
bnx2_write_phy(bp, MII_ADVERTISE, adv);
bnx2_write_phy(bp, MII_BMCR, new_bmcr);
......@@ -1048,12 +1058,10 @@ bnx2_setup_serdes_phy(struct bnx2 *bp)
if ((adv != new_adv) || ((bmcr & BMCR_ANENABLE) == 0)) {
/* Force a link down visible on the other side */
if (bp->link_up) {
int i;
bnx2_write_phy(bp, MII_BMCR, BMCR_LOOPBACK);
for (i = 0; i < 110; i++) {
udelay(100);
}
spin_unlock_bh(&bp->phy_lock);
msleep(20);
spin_lock_bh(&bp->phy_lock);
}
bnx2_write_phy(bp, MII_ADVERTISE, new_adv);
......@@ -1397,7 +1405,7 @@ bnx2_set_phy_loopback(struct bnx2 *bp)
for (i = 0; i < 10; i++) {
if (bnx2_test_link(bp) == 0)
break;
udelay(10);
msleep(100);
}
mac_mode = REG_RD(bp, BNX2_EMAC_MODE);
......@@ -3713,7 +3721,9 @@ bnx2_init_nic(struct bnx2 *bp)
if ((rc = bnx2_reset_nic(bp, BNX2_DRV_MSG_CODE_RESET)) != 0)
return rc;
spin_lock_bh(&bp->phy_lock);
bnx2_init_phy(bp);
spin_unlock_bh(&bp->phy_lock);
bnx2_set_link(bp);
return 0;
}
......@@ -3953,7 +3963,7 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode)
bnx2_set_mac_loopback(bp);
}
else if (loopback_mode == BNX2_PHY_LOOPBACK) {
bp->loopback = 0;
bp->loopback = PHY_LOOPBACK;
bnx2_set_phy_loopback(bp);
}
else
......@@ -4744,10 +4754,14 @@ bnx2_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
}
else {
if (bp->phy_flags & PHY_SERDES_FLAG) {
if ((cmd->speed != SPEED_1000) ||
(cmd->duplex != DUPLEX_FULL)) {
if ((cmd->speed != SPEED_1000 &&
cmd->speed != SPEED_2500) ||
(cmd->duplex != DUPLEX_FULL))
return -EINVAL;
if (cmd->speed == SPEED_2500 &&
!(bp->phy_flags & PHY_2_5G_CAPABLE_FLAG))
return -EINVAL;
}
}
else if (cmd->speed == SPEED_1000) {
return -EINVAL;
......@@ -5289,6 +5303,8 @@ bnx2_self_test(struct net_device *dev, struct ethtool_test *etest, u64 *buf)
memset(buf, 0, sizeof(u64) * BNX2_NUM_TESTS);
if (etest->flags & ETH_TEST_FL_OFFLINE) {
int i;
bnx2_netif_stop(bp);
bnx2_reset_chip(bp, BNX2_DRV_MSG_CODE_DIAG);
bnx2_free_skbs(bp);
......@@ -5313,9 +5329,11 @@ bnx2_self_test(struct net_device *dev, struct ethtool_test *etest, u64 *buf)
}
/* wait for link up */
msleep_interruptible(3000);
if ((!bp->link_up) && !(bp->phy_flags & PHY_SERDES_FLAG))
msleep_interruptible(4000);
for (i = 0; i < 7; i++) {
if (bp->link_up)
break;
msleep_interruptible(1000);
}
}
if (bnx2_test_nvram(bp) != 0) {
......
......@@ -3696,6 +3696,8 @@ struct l2_fhdr {
/* 5708 Serdes PHY registers */
#define BCM5708S_BMCR_FORCE_2500 0x20
#define BCM5708S_UP1 0xb
#define BCM5708S_UP1_2G5 0x1
......
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