i40e: Add IWARP support for X722

X722 supports IWARP, this patch handles checking for PE critical errors.
Since the driver doesn't support the IWARP interface for now, this patch
just does bare minimum to log a message oif a PE critical error
happens.

Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index d9cb87f383dddf67b3b5838d60140b1a3e9b5c7c..3bb832a2ec51a6997a7fab7d832176ce9a606977 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -2908,6 +2908,9 @@ static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
              I40E_PFINT_ICR0_ENA_VFLR_MASK          |
              I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
 
+       if (pf->flags & I40E_FLAG_IWARP_ENABLED)
+               val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
+
        if (pf->flags & I40E_FLAG_PTP)
                val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
 
@@ -3198,6 +3201,13 @@ static irqreturn_t i40e_intr(int irq, void *data)
            (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
                pf->sw_int_count++;
 
+       if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
+           (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
+               ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
+               icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
+               dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
+       }
+
        /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
        if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {