[dpdk-dev] [PATCH 2/3] i40e: rework of PF interrupt cause enable flags processing

[Helin Zhang]

To get the code cleaner and more straightforward, a macro
is defined for all interrupt cause enable flags. Two more
causes are enabled, and all the interrupt causes for
reporting any errors are compiled conditionally, as they
are for debug only.

Signed-off-by: Helin Zhang <helin.zhang at intel.com>
Reviewed-by: Jing Chen <jing.d.chen at intel.com>
Reviewed-by: Jijiang Liu <jijiang.liu at intel.com>
---
 lib/librte_pmd_i40e/i40e_ethdev.c | 72 +++++++++++++++++++--------------------
 1 file changed, 35 insertions(+), 37 deletions(-)

diff --git a/lib/librte_pmd_i40e/i40e_ethdev.c b/lib/librte_pmd_i40e/i40e_ethdev.c
index 003b084..6df41ea 100644
--- a/lib/librte_pmd_i40e/i40e_ethdev.c
+++ b/lib/librte_pmd_i40e/i40e_ethdev.c
@@ -117,6 +117,19 @@
 	(1ULL << I40E_FILTER_PCTYPE_FCOE_OTHER) | \
 	(1ULL << I40E_FILTER_PCTYPE_L2_PAYLOAD))
 
+/* Mask of PF interrupt causes */
+#define I40E_PFINT_ICR0_ENA_MASK ( \
+		I40E_PFINT_ICR0_ENA_ECC_ERR_MASK | \
+		I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK | \
+		I40E_PFINT_ICR0_ENA_GRST_MASK | \
+		I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK | \
+		I40E_PFINT_ICR0_ENA_STORM_DETECT_MASK | \
+		I40E_PFINT_ICR0_ENA_LINK_STAT_CHANGE_MASK | \
+		I40E_PFINT_ICR0_ENA_HMC_ERR_MASK | \
+		I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK | \
+		I40E_PFINT_ICR0_ENA_VFLR_MASK | \
+		I40E_PFINT_ICR0_ENA_ADMINQ_MASK)
+
 static int eth_i40e_dev_init(\
 			__attribute__((unused)) struct eth_driver *eth_drv,
 			struct rte_eth_dev *eth_dev);
@@ -3261,24 +3274,9 @@ i40e_pf_enable_irq0(struct i40e_hw *hw)
 static void
 i40e_pf_config_irq0(struct i40e_hw *hw)
 {
-	uint32_t enable;
-
 	/* read pending request and disable first */
 	i40e_pf_disable_irq0(hw);
-	/**
-	 * Enable all interrupt error options to detect possible errors,
-	 * other informative int are ignored
-	 */
-	enable = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK |
-	         I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK |
-	         I40E_PFINT_ICR0_ENA_GRST_MASK |
-	         I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
-	         I40E_PFINT_ICR0_ENA_LINK_STAT_CHANGE_MASK |
-	         I40E_PFINT_ICR0_ENA_HMC_ERR_MASK |
-	         I40E_PFINT_ICR0_ENA_VFLR_MASK |
-	         I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
-
-	I40E_WRITE_REG(hw, I40E_PFINT_ICR0_ENA, enable);
+	I40E_WRITE_REG(hw, I40E_PFINT_ICR0_ENA, I40E_PFINT_ICR0_ENA_MASK);
 	I40E_WRITE_REG(hw, I40E_PFINT_STAT_CTL0,
 		I40E_PFINT_STAT_CTL0_OTHER_ITR_INDX_MASK);
 
@@ -3398,44 +3396,44 @@ i40e_dev_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
 	icr0 = I40E_READ_REG(hw, I40E_PFINT_ICR0);
 	icr0_ena = I40E_READ_REG(hw, I40E_PFINT_ICR0_ENA);
 
-	/* Shared IRQ case, return */
+	/* No interrupt event indicated */
 	if (!(icr0 & I40E_PFINT_ICR0_INTEVENT_MASK)) {
-		PMD_DRV_LOG(INFO, "Port%d INT0:share IRQ case, "
-			"no INT event to process\n", hw->pf_id);
+		PMD_DRV_LOG(INFO, "No interrupt event\n");
 		goto done;
 	}
 
-	if (icr0 & I40E_PFINT_ICR0_LINK_STAT_CHANGE_MASK) {
-		PMD_DRV_LOG(INFO, "INT:Link status changed\n");
-		i40e_dev_link_update(dev, 0);
-	}
-
+#ifdef RTE_LIBRTE_I40E_DEBUG_DRIVER
 	if (icr0 & I40E_PFINT_ICR0_ECC_ERR_MASK)
-		PMD_DRV_LOG(INFO, "INT:Unrecoverable ECC Error\n");
-
+		PMD_DRV_LOG(ERR, "ICR0: unrecoverable ECC error\n");
 	if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK)
-		PMD_DRV_LOG(INFO, "INT:Malicious programming detected\n");
-
+		PMD_DRV_LOG(ERR, "ICR0: malicious programming detected\n");
 	if (icr0 & I40E_PFINT_ICR0_GRST_MASK)
-		PMD_DRV_LOG(INFO, "INT:Global Resets Requested\n");
-
+		PMD_DRV_LOG(INFO, "ICR0: global reset requested\n");
 	if (icr0 & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK)
-		PMD_DRV_LOG(INFO, "INT:PCI EXCEPTION occured\n");
-
+		PMD_DRV_LOG(INFO, "ICR0: PCI exception\n activated\n");
+	if (icr0 & I40E_PFINT_ICR0_STORM_DETECT_MASK)
+		PMD_DRV_LOG(INFO, "ICR0: a change in the storm control "
+								"state\n");
 	if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK)
-		PMD_DRV_LOG(INFO, "INT:HMC error occured\n");
+		PMD_DRV_LOG(ERR, "ICR0: HMC error\n");
+	if (icr0 & I40E_PFINT_ICR0_PE_CRITERR_MASK)
+		PMD_DRV_LOG(ERR, "ICR0: protocol engine critical error\n");
+#endif /* RTE_LIBRTE_I40E_DEBUG_DRIVER */
 
-	/* Add processing func to deal with VF reset vent */
 	if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
-		PMD_DRV_LOG(INFO, "INT:VF reset detected\n");
+		PMD_DRV_LOG(INFO, "ICR0: VF reset detected\n");
 		i40e_dev_handle_vfr_event(dev);
 	}
-	/* Find admin queue event */
 	if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
-		PMD_DRV_LOG(INFO, "INT:ADMINQ event\n");
+		PMD_DRV_LOG(INFO, "ICR0: adminq event\n");
 		i40e_dev_handle_aq_msg(dev);
 	}
 
+	if (icr0 & I40E_PFINT_ICR0_LINK_STAT_CHANGE_MASK) {
+		PMD_DRV_LOG(INFO, "INT:Link status changed\n");
+		i40e_dev_link_update(dev, 0);
+	}
+
 done:
 	I40E_WRITE_REG(hw, I40E_PFINT_ICR0_ENA, icr0_ena);
 	/* Re-enable interrupt from device side */
-- 
1.8.1.4