From aac9e053f1044bf21ac068eeb0e8518d080f4a66 Mon Sep 17 00:00:00 2001 From: Don Skidmore Date: Tue, 19 Jul 2016 19:43:28 -0400 Subject: ixgbe: cleanup crosstalk fix This patch address a few issues with the initial crosstalk fix. Most important of which is the SDP that indicates the presents of a SFP+ module changes between HW types. With this change that is taken in to consideration It also moves the check closer to the base code that checks link. This makes it so we only need to do the check in one spot. Signed-off-by: Don Skidmore Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_common.c | 71 +++++++++++++++++++++++++ 1 file changed, 71 insertions(+) (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_common.c') diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c index ce881a718abe..b4217f30e89c 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c @@ -277,6 +277,7 @@ s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw) { s32 ret_val; u32 ctrl_ext; + u16 device_caps; /* Set the media type */ hw->phy.media_type = hw->mac.ops.get_media_type(hw); @@ -301,6 +302,22 @@ s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw) if (ret_val) return ret_val; + /* Cashe bit indicating need for crosstalk fix */ + switch (hw->mac.type) { + case ixgbe_mac_82599EB: + case ixgbe_mac_X550EM_x: + case ixgbe_mac_x550em_a: + hw->mac.ops.get_device_caps(hw, &device_caps); + if (device_caps & IXGBE_DEVICE_CAPS_NO_CROSSTALK_WR) + hw->need_crosstalk_fix = false; + else + hw->need_crosstalk_fix = true; + break; + default: + hw->need_crosstalk_fix = false; + break; + } + /* Clear adapter stopped flag */ hw->adapter_stopped = false; @@ -3199,6 +3216,31 @@ s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw) return 0; } +/** + * ixgbe_need_crosstalk_fix - Determine if we need to do cross talk fix + * @hw: pointer to hardware structure + * + * Contains the logic to identify if we need to verify link for the + * crosstalk fix + **/ +static bool ixgbe_need_crosstalk_fix(struct ixgbe_hw *hw) +{ + /* Does FW say we need the fix */ + if (!hw->need_crosstalk_fix) + return false; + + /* Only consider SFP+ PHYs i.e. media type fiber */ + switch (hw->mac.ops.get_media_type(hw)) { + case ixgbe_media_type_fiber: + case ixgbe_media_type_fiber_qsfp: + break; + default: + return false; + } + + return true; +} + /** * ixgbe_check_mac_link_generic - Determine link and speed status * @hw: pointer to hardware structure @@ -3214,6 +3256,35 @@ s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed, u32 links_reg, links_orig; u32 i; + /* If Crosstalk fix enabled do the sanity check of making sure + * the SFP+ cage is full. + */ + if (ixgbe_need_crosstalk_fix(hw)) { + u32 sfp_cage_full; + + switch (hw->mac.type) { + case ixgbe_mac_82599EB: + sfp_cage_full = IXGBE_READ_REG(hw, IXGBE_ESDP) & + IXGBE_ESDP_SDP2; + break; + case ixgbe_mac_X550EM_x: + case ixgbe_mac_x550em_a: + sfp_cage_full = IXGBE_READ_REG(hw, IXGBE_ESDP) & + IXGBE_ESDP_SDP0; + break; + default: + /* sanity check - No SFP+ devices here */ + sfp_cage_full = false; + break; + } + + if (!sfp_cage_full) { + *link_up = false; + *speed = IXGBE_LINK_SPEED_UNKNOWN; + return 0; + } + } + /* clear the old state */ links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS); -- cgit v1.2.3