From 605387b03f8f038be604fff3d63c9c49b20848ec Mon Sep 17 00:00:00 2001
From: Alok Prasad <palok@marvell.com>
Date: Tue, 24 Aug 2021 04:02:46 +0000
Subject: [PATCH] qed: Enable automatic recovery on error condition.
Patch-mainline: v5.14
Git-commit: 755f905340802e2efb1ea96b9ce0f442916c2645
References: jsc#SLE-19875

This patch enables automatic recovery by default in case of various
error condition like fw assert , hardware error etc.
This also ensure driver can handle multiple iteration of assertion
conditions.

Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Alok Prasad <palok@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Denis Kirjanov <denis.kirjanov@suse.com>
---
 drivers/net/ethernet/qlogic/qed/qed_devlink.c  |  2 +-
 drivers/net/ethernet/qlogic/qed/qed_int.c      | 10 ++++++++++
 drivers/net/ethernet/qlogic/qed/qed_reg_addr.h |  8 ++++++++
 drivers/net/ethernet/qlogic/qede/qede_main.c   | 21 ++++++++++++++++++++-
 4 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_devlink.c b/drivers/net/ethernet/qlogic/qed/qed_devlink.c
index cf7f4da68e69..61349b8adf75 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_devlink.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_devlink.c
@@ -93,7 +93,7 @@ static const struct devlink_health_reporter_ops qed_fw_fatal_reporter_ops = {
 		.dump = qed_fw_fatal_reporter_dump,
 };
 
-#define QED_REPORTER_FW_GRACEFUL_PERIOD 1200000
+#define QED_REPORTER_FW_GRACEFUL_PERIOD 0
 
 void qed_fw_reporters_create(struct devlink *devlink)
 {
diff --git a/drivers/net/ethernet/qlogic/qed/qed_int.c b/drivers/net/ethernet/qlogic/qed/qed_int.c
index 578935f643b8..0993fea75ea1 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_int.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_int.c
@@ -351,6 +351,9 @@ static int qed_fw_assertion(struct qed_hwfn *p_hwfn)
 	qed_hw_err_notify(p_hwfn, p_hwfn->p_dpc_ptt, QED_HW_ERR_FW_ASSERT,
 			  "FW assertion!\n");
 
+	/* Clear assert indications */
+	qed_wr(p_hwfn, p_hwfn->p_dpc_ptt, MISC_REG_AEU_GENERAL_ATTN_32, 0);
+
 	return -EINVAL;
 }
 
@@ -943,6 +946,13 @@ qed_int_deassertion_aeu_bit(struct qed_hwfn *p_hwfn,
 	DP_INFO(p_hwfn, "`%s' - Disabled future attentions\n",
 		p_bit_name);
 
+	/* Re-enable FW aassertion (Gen 32) interrupts */
+	val = qed_rd(p_hwfn, p_hwfn->p_dpc_ptt,
+		     MISC_REG_AEU_ENABLE4_IGU_OUT_0);
+	val |= MISC_REG_AEU_ENABLE4_IGU_OUT_0_GENERAL_ATTN32;
+	qed_wr(p_hwfn, p_hwfn->p_dpc_ptt,
+	       MISC_REG_AEU_ENABLE4_IGU_OUT_0, val);
+
 out:
 	return rc;
 }
diff --git a/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h b/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
index 9db22be42476..da1b7fdcbda7 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
@@ -504,6 +504,8 @@
 	0x180824UL
 #define  MISC_REG_AEU_GENERAL_ATTN_0 \
 	0x008400UL
+#define MISC_REG_AEU_GENERAL_ATTN_32 \
+	0x008480UL
 #define MISC_REG_AEU_GENERAL_ATTN_35 \
 	0x00848cUL
 #define  CAU_REG_SB_ADDR_MEMORY \
@@ -518,6 +520,12 @@
 	0x180804UL
 #define  MISC_REG_AEU_ENABLE1_IGU_OUT_0 \
 	0x00849cUL
+#define MISC_REG_AEU_ENABLE4_IGU_OUT_0 \
+	0x0084a8UL
+#define MISC_REG_AEU_ENABLE4_IGU_OUT_0_GENERAL_ATTN32      \
+	(0x1UL << 0)
+#define MISC_REG_AEU_ENABLE4_IGU_OUT_0_GENERAL_ATTN32_SHIFT \
+	0
 #define MISC_REG_AEU_AFTER_INVERT_1_IGU	\
 	0x0087b4UL
 #define  MISC_REG_AEU_MASK_ATTN_IGU \
diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index 1c7f9ed6f1c1..9e964db23eb3 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -1907,6 +1907,12 @@ static int qede_req_msix_irqs(struct qede_dev *edev)
 				 &edev->fp_array[i]);
 		if (rc) {
 			DP_ERR(edev, "Request fp %d irq failed\n", i);
+#ifdef CONFIG_RFS_ACCEL
+			if (edev->ndev->rx_cpu_rmap)
+				free_irq_cpu_rmap(edev->ndev->rx_cpu_rmap);
+
+			edev->ndev->rx_cpu_rmap = NULL;
+#endif
 			qede_sync_free_irqs(edev);
 			return rc;
 		}
@@ -2299,6 +2305,15 @@ static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
 
 		rc = qede_stop_queues(edev);
 		if (rc) {
+#ifdef CONFIG_RFS_ACCEL
+			if (edev->dev_info.common.b_arfs_capable) {
+				qede_poll_for_freeing_arfs_filters(edev);
+				if (edev->ndev->rx_cpu_rmap)
+					free_irq_cpu_rmap(edev->ndev->rx_cpu_rmap);
+
+				edev->ndev->rx_cpu_rmap = NULL;
+			}
+#endif
 			qede_sync_free_irqs(edev);
 			goto out;
 		}
@@ -2628,8 +2643,10 @@ static void qede_generic_hw_err_handler(struct qede_dev *edev)
 		  "Generic sleepable HW error handling started - err_flags 0x%lx\n",
 		  edev->err_flags);
 
-	if (edev->devlink)
+	if (edev->devlink) {
+		DP_NOTICE(edev, "Reporting fatal error to devlink\n");
 		edev->ops->common->report_fatal_error(edev->devlink, edev->last_err_type);
+	}
 
 	clear_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags);
 
@@ -2651,6 +2668,8 @@ static void qede_set_hw_err_flags(struct qede_dev *edev,
 	case QED_HW_ERR_FW_ASSERT:
 		set_bit(QEDE_ERR_ATTN_CLR_EN, &err_flags);
 		set_bit(QEDE_ERR_GET_DBG_INFO, &err_flags);
+		/* make this error as recoverable and start recovery*/
+		set_bit(QEDE_ERR_IS_RECOVERABLE, &err_flags);
 		break;
 
 	default:
-- 
2.16.4