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 <[email protected]>
Signed-off-by: Catherine Sullivan <[email protected]>
Tested-by: Jim Young <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>

Author: anjalisinghai1

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) {