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| author | George V. Neville-Neil <gnn@FreeBSD.org> | 2008-12-04 20:32:53 +0000 |
|---|---|---|
| committer | George V. Neville-Neil <gnn@FreeBSD.org> | 2008-12-04 20:32:53 +0000 |
| commit | 9036240993b3c7d76e2403a71780c46f964ec0d0 (patch) | |
| tree | 7d84349fd34d97e30c71a14e54c8698e104e5175 /sys/dev/cxgb/common | |
| parent | 78bc7eec0d82029231825ee8782ab2920b2c66a5 (diff) | |
| download | src-9036240993b3c7d76e2403a71780c46f964ec0d0.tar.gz src-9036240993b3c7d76e2403a71780c46f964ec0d0.zip | |
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
Notes
Notes:
svn path=/head/; revision=185620
Diffstat (limited to 'sys/dev/cxgb/common')
| -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 99bfb7611427..55c642155dc0 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; } |