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ixgbe: Fix 1G link WoL 

We reset during the shutdown path which will reset AUTOC register.  This
would change LMS to 10G.  If we were currently linked at 1G we will lose
link, which is a bad thing if we wanted WoL to work.  For the fix I needed
to know if WoL is supported so I created a new bool in the ixgbe_hw struct.
If this is set we will not allow the reset to change the current LMS value
in AUTOC.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Don Skidmore 2013-02-28 08:08:44 +00:00 committed by Jeff Kirsher
parent 0b2679d61c
commit b8f8363895
3 changed files with 8 additions and 2 deletions
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5
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
View File

@ -1051,8 +1051,11 @@ mac_reset_top:
/* If MNG FW is running on a multi-speed device that
* doesn't autoneg with out driver support we need to
* leave LMS in the state it was before we MAC reset.
* Likewise if we support WoL we don't want change the
* LMS state either.
*/
if (hw->phy.multispeed_fiber && hw->mng_fw_enabled)
if ((hw->phy.multispeed_fiber && hw->mng_fw_enabled) ||
hw->wol_supported)
hw->mac.orig_autoc =
(hw->mac.orig_autoc & ~IXGBE_AUTOC_LMS_MASK) |
curr_lms;

4
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

@ -7526,7 +7526,9 @@ skip_sriov:
/* WOL not supported for all devices */
adapter->wol = 0;
hw->eeprom.ops.read(hw, 0x2c, &adapter->eeprom_cap);
if (ixgbe_wol_supported(adapter, pdev->device, pdev->subsystem_device))
hw->wol_supported = ixgbe_wol_supported(adapter, pdev->device,
pdev->subsystem_device);
if (hw->wol_supported)
adapter->wol = IXGBE_WUFC_MAG;
device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);

1
drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
View File

@ -2998,6 +2998,7 @@ struct ixgbe_hw {
bool force_full_reset;
bool allow_unsupported_sfp;
bool mng_fw_enabled;
bool wol_supported;
};
struct ixgbe_info {