diff options
| author |   Bruce Allan <bruce.w.allan@intel.com> | 2010-01-13 01:53:08 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-01-13 17:12:46 -0800 |
| commit | baf86c9d36826fab0160251bbc87dfab3af48a21 (patch) | |
| tree | dc12219fe6c866cf5fc689eb303cecb4353fcdfb /drivers/net/e1000e | |
| parent | e1000e: MDIO slow mode should always be done for 82577 (diff) | |
| download | linux-dev-baf86c9d36826fab0160251bbc87dfab3af48a21.tar.xz linux-dev-baf86c9d36826fab0160251bbc87dfab3af48a21.zip | |
e1000e: workaround link issues on busy hub in half duplex on 82577/82578
This patch removes a delay in hardware after every received packet allowing
more time for transmitted packets to go out in between received packets in
half duplex.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/e1000e')
| -rw-r--r-- | drivers/net/e1000e/ich8lan.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c index c2ea86197503..8b6ecd127889 100644 --- a/drivers/net/e1000e/ich8lan.c +++ b/drivers/net/e1000e/ich8lan.c @@ -1122,6 +1122,7 @@ static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw) static s32 e1000_hv_phy_workarounds_ich8lan(struct e1000_hw *hw) { s32 ret_val = 0; + u16 phy_data; if (hw->mac.type != e1000_pchlan) return ret_val; @@ -1165,16 +1166,32 @@ static s32 e1000_hv_phy_workarounds_ich8lan(struct e1000_hw *hw) hw->phy.addr = 1; ret_val = e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, 0); + hw->phy.ops.release(hw); if (ret_val) goto out; - hw->phy.ops.release(hw); /* * Configure the K1 Si workaround during phy reset assuming there is * link so that it disables K1 if link is in 1Gbps. */ ret_val = e1000_k1_gig_workaround_hv(hw, true); + if (ret_val) + goto out; + /* Workaround for link disconnects on a busy hub in half duplex */ + ret_val = hw->phy.ops.acquire(hw); + if (ret_val) + goto out; + ret_val = hw->phy.ops.read_reg_locked(hw, + PHY_REG(BM_PORT_CTRL_PAGE, 17), + &phy_data); + if (ret_val) + goto release; + ret_val = hw->phy.ops.write_reg_locked(hw, + PHY_REG(BM_PORT_CTRL_PAGE, 17), + phy_data & 0x00FF); +release: + hw->phy.ops.release(hw); out: return ret_val; } |