From: Shiju Jose <shiju.jose@huawei.com>
Date: Fri, 19 Oct 2018 20:15:28 +0100
Subject: net: hns3: Add support to enable and disable hw errors
Patch-mainline: v4.20-rc1
Git-commit: 997141950380931073e13f7db8daf0c27b79af16
References: bsc#1104353 FATE#326415

This patch adds functions to enable and disable hw errors.

Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.c  |   22 ++++++++++++++++
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.h  |    2 +
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c |    8 +++++
 3 files changed, 32 insertions(+)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.c
@@ -7,6 +7,28 @@ static const struct hclge_hw_blk hw_blk[
 	{ /* sentinel */ }
 };
 
+int hclge_hw_error_set_state(struct hclge_dev *hdev, bool state)
+{
+	struct device *dev = &hdev->pdev->dev;
+	int ret = 0;
+	int i = 0;
+
+	while (hw_blk[i].name) {
+		if (!hw_blk[i].enable_error) {
+			i++;
+			continue;
+		}
+		ret = hw_blk[i].enable_error(hdev, state);
+		if (ret) {
+			dev_err(dev, "fail(%d) to en/disable err int\n", ret);
+			return ret;
+		}
+		i++;
+	}
+
+	return ret;
+}
+
 pci_ers_result_t hclge_process_ras_hw_error(struct hnae3_ae_dev *ae_dev)
 {
 	struct hclge_dev *hdev = ae_dev->priv;
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.h
@@ -21,9 +21,11 @@ enum hclge_err_int_type {
 struct hclge_hw_blk {
 	u32 msk;
 	const char *name;
+	int (*enable_error)(struct hclge_dev *hdev, bool en);
 	void (*process_error)(struct hclge_dev *hdev,
 			      enum hclge_err_int_type type);
 };
 
+int hclge_hw_error_set_state(struct hclge_dev *hdev, bool state);
 pci_ers_result_t hclge_process_ras_hw_error(struct hnae3_ae_dev *ae_dev);
 #endif
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -6769,6 +6769,13 @@ static int hclge_init_ae_dev(struct hnae
 		goto err_mdiobus_unreg;
 	}
 
+	ret = hclge_hw_error_set_state(hdev, true);
+	if (ret) {
+		dev_err(&pdev->dev,
+			"hw error interrupts enable failed, ret =%d\n", ret);
+		goto err_mdiobus_unreg;
+	}
+
 	hclge_dcb_ops_set(hdev);
 
 	timer_setup(&hdev->service_timer, hclge_service_timer, 0);
@@ -6906,6 +6913,7 @@ static void hclge_uninit_ae_dev(struct h
 	hclge_enable_vector(&hdev->misc_vector, false);
 	synchronize_irq(hdev->misc_vector.vector_irq);
 
+	hclge_hw_error_set_state(hdev, false);
 	hclge_destroy_cmd_queue(&hdev->hw);
 	hclge_misc_irq_uninit(hdev);
 	hclge_pci_uninit(hdev);