[PATCH 3/3] sky2: turn of dynamic Tx watermark workaround (FE+ only)
From: Stephen Hemminger <hidden>
Date: 2007-11-27 22:10:31
Add workaround for issues FE+ (A0) transmit watermark. This is copied verbatim from vendor driver sk98lin (10.22.4.3). Don't have that chip version and no more information seems to be available. Signed-off-by: Stephen Hemminger <redacted>
--- a/drivers/net/sky2.c 2007-11-26 14:02:36.000000000 -0800
+++ b/drivers/net/sky2.c 2007-11-26 14:28:47.000000000 -0800@@ -845,6 +845,13 @@ static void sky2_mac_init(struct sky2_hw sky2_set_tx_stfwd(hw, port); } + if (hw->chip_id == CHIP_ID_YUKON_FE_P && + hw->chip_rev == CHIP_REV_YU_FE2_A0) { + /* disable dynamic watermark */ + reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA)); + reg &= ~TX_DYN_WM_ENA; + sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg); + } } /* Assign Ram Buffer allocation to queue */