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i40e: Detect ATR HW Evict NVM issue and disable the feature 

This patch fixes a problem with the HW ATR eviction feature where the
NVM setting was incorrect.  This patch detects the issue on X720
adapters and disables the feature if the NVM setting is incorrect.

Without this patch, HW ATR Evict feature does not work on broken NVMs
and is not detected either.  If the HW ATR Evict feature is disabled
the SW Eviction feature will take effect.

Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Alice Michael <alice.michael@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Anjali Singhai Jain 2017-06-23 04:24:48 -04:00 committed by Jeff Kirsher
parent 28921a0c2f
commit 10a955ff62
1 changed files with 8 additions and 0 deletions
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8
drivers/net/ethernet/intel/i40e/i40e_main.c
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@ -8963,6 +8963,14 @@ static int i40e_sw_init(struct i40e_pf *pf)
I40E_HW_PTP_L4_CAPABLE |
I40E_HW_WOL_MC_MAGIC_PKT_WAKE |
I40E_HW_OUTER_UDP_CSUM_CAPABLE);
#define I40E_FDEVICT_PCTYPE_DEFAULT 0xc03
if (rd32(&pf->hw, I40E_GLQF_FDEVICTENA(1)) !=
I40E_FDEVICT_PCTYPE_DEFAULT) {
dev_warn(&pf->pdev->dev,
"FD EVICT PCTYPES are not right, disable FD HW EVICT\n");
pf->hw_features &= ~I40E_HW_ATR_EVICT_CAPABLE;
}
} else if ((pf->hw.aq.api_maj_ver > 1) ||
((pf->hw.aq.api_maj_ver == 1) &&
(pf->hw.aq.api_min_ver > 4))) {