diff options
| author | Emil Tantilov | 2011-03-18 09:18:32 +0100 |
|---|---|---|
| committer | Jeff Kirsher | 2011-04-14 04:22:44 +0200 |
| commit | 0fa6d83258252695203d24c8818092644df10fd7 (patch) | |
| tree | 9ac59ecec98e4c5ab7594271c0012e88f0a9a99c /drivers/net/ixgbe/ixgbe_82599.c | |
| parent | ixgbe: move disabling of relaxed ordering in start_hw() (diff) | |
| download | kernel-qcow2-linux-0fa6d83258252695203d24c8818092644df10fd7.tar.gz kernel-qcow2-linux-0fa6d83258252695203d24c8818092644df10fd7.tar.xz kernel-qcow2-linux-0fa6d83258252695203d24c8818092644df10fd7.zip | |
ixgbe: fix 82599 KR downshift coexistence with LESM FW module
Disable KR to KX4/KX downshift on 82599 backplane devices when
LESM (Link Establishment State Machine) is enabled in FW. Those
features cannot co-exist as they both manipulate the same registers.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Acked-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phillip Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ixgbe/ixgbe_82599.c')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_82599.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c index 09934a82eb30..d195278c62e3 100644 --- a/drivers/net/ixgbe/ixgbe_82599.c +++ b/drivers/net/ixgbe/ixgbe_82599.c @@ -61,6 +61,7 @@ static s32 ixgbe_setup_copper_link_82599(struct ixgbe_hw *hw, bool autoneg, bool autoneg_wait_to_complete); static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw); +static bool ixgbe_verify_lesm_fw_enabled_82599(struct ixgbe_hw *hw); static void ixgbe_init_mac_link_ops_82599(struct ixgbe_hw *hw) { @@ -86,7 +87,8 @@ static void ixgbe_init_mac_link_ops_82599(struct ixgbe_hw *hw) if ((mac->ops.get_media_type(hw) == ixgbe_media_type_backplane) && (hw->phy.smart_speed == ixgbe_smart_speed_auto || - hw->phy.smart_speed == ixgbe_smart_speed_on)) + hw->phy.smart_speed == ixgbe_smart_speed_on) && + !ixgbe_verify_lesm_fw_enabled_82599(hw)) mac->ops.setup_link = &ixgbe_setup_mac_link_smartspeed; else mac->ops.setup_link = &ixgbe_setup_mac_link_82599; @@ -2028,6 +2030,48 @@ fw_version_out: return status; } +/** + * ixgbe_verify_lesm_fw_enabled_82599 - Checks LESM FW module state. + * @hw: pointer to hardware structure + * + * Returns true if the LESM FW module is present and enabled. Otherwise + * returns false. Smart Speed must be disabled if LESM FW module is enabled. + **/ +static bool ixgbe_verify_lesm_fw_enabled_82599(struct ixgbe_hw *hw) +{ + bool lesm_enabled = false; + u16 fw_offset, fw_lesm_param_offset, fw_lesm_state; + s32 status; + + /* get the offset to the Firmware Module block */ + status = hw->eeprom.ops.read(hw, IXGBE_FW_PTR, &fw_offset); + + if ((status != 0) || + (fw_offset == 0) || (fw_offset == 0xFFFF)) + goto out; + + /* get the offset to the LESM Parameters block */ + status = hw->eeprom.ops.read(hw, (fw_offset + + IXGBE_FW_LESM_PARAMETERS_PTR), + &fw_lesm_param_offset); + + if ((status != 0) || + (fw_lesm_param_offset == 0) || (fw_lesm_param_offset == 0xFFFF)) + goto out; + + /* get the lesm state word */ + status = hw->eeprom.ops.read(hw, (fw_lesm_param_offset + + IXGBE_FW_LESM_STATE_1), + &fw_lesm_state); + + if ((status == 0) && + (fw_lesm_state & IXGBE_FW_LESM_STATE_ENABLED)) + lesm_enabled = true; + +out: + return lesm_enabled; +} + static struct ixgbe_mac_operations mac_ops_82599 = { .init_hw = &ixgbe_init_hw_generic, .reset_hw = &ixgbe_reset_hw_82599, |