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| author | gnn <gnn@FreeBSD.org> | 2008-12-04 20:32:53 +0000 |
|---|---|---|
| committer | gnn <gnn@FreeBSD.org> | 2008-12-04 20:32:53 +0000 |
| commit | 886616b21131ba2533dd307fdd8459de46be616b (patch) | |
| tree | 7d84349fd34d97e30c71a14e54c8698e104e5175 /sys | |
| parent | 40f437cf7fe146b784e57ffdac3177c408dac285 (diff) | |
| download | FreeBSD-src-886616b21131ba2533dd307fdd8459de46be616b.zip FreeBSD-src-886616b21131ba2533dd307fdd8459de46be616b.tar.gz | |
Fix a bug with the ael1006 PHY. The bug shows up as persistent but incomplete
packet loss, of between 10-30%. The fix is to put the PHY into
and take it out of local loopback mode when resetting the interface.
Obtained from: Chelsio Inc.
MFC after: 3 days
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/cxgb/common/cxgb_ael1002.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/dev/cxgb/common/cxgb_ael1002.c b/sys/dev/cxgb/common/cxgb_ael1002.c index 99bfb76..55c6421 100644 --- a/sys/dev/cxgb/common/cxgb_ael1002.c +++ b/sys/dev/cxgb/common/cxgb_ael1002.c @@ -205,6 +205,16 @@ static int ael1006_reset(struct cphy *phy, int wait) t3_write_reg(phy->adapter, A_T3DBG_GPIO_EN, gpio_out); msleep(125); t3_phy_reset(phy, MDIO_DEV_PMA_PMD, wait); + + /* Phy loopback work around for ael1006 */ + /* Soft reset phy by toggling loopback */ + msleep(125); + /* Put phy into local loopback */ + t3_mdio_change_bits(phy, MDIO_DEV_PMA_PMD, MII_BMCR, 0, 1); + msleep(125); + /* Take phy out of local loopback */ + t3_mdio_change_bits(phy, MDIO_DEV_PMA_PMD, MII_BMCR, 1, 0); + return 0; } |
