net: hns3: dump some debug information when reset fail

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

When reset fails, there is some information that will help for
finding out why does reset fail.

Feature or Bugfix:Bugfix
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Reviewed-by: Nshenjian <shenjian15@huawei.com>
Reviewed-by: Nlinyunsheng <linyunsheng@huawei.com>
Reviewed-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c

@@ -1022,7 +1022,7 @@ static void hclge_dbg_fd_tcam(struct hclge_dev *hdev)
 	kfree(rule_locs);
 }
 
-static void hclge_dbg_dump_rst_info(struct hclge_dev *hdev)
+void hclge_dbg_dump_rst_info(struct hclge_dev *hdev)
 {
 	dev_info(&hdev->pdev->dev, "PF reset count: %u\n",
 		 hdev->rst_stats.pf_rst_cnt);

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c

@@ -3550,6 +3550,8 @@ static bool hclge_reset_err_handle(struct hclge_dev *hdev)
 	if (handle && handle->ae_algo->ops->reset_done)
 		handle->ae_algo->ops->reset_done(handle, false);
 
+	hclge_dbg_dump_rst_info(hdev);
+
 	return false;
 }
 

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h

@@ -1053,4 +1053,5 @@ void hclge_task_schedule(struct hclge_dev *hdev, unsigned long delay_time);
 int hclge_query_bd_num_cmd_send(struct hclge_dev *hdev,
 				struct hclge_desc *desc);
 void hclge_inform_vf_promisc_info(struct hclge_vport *vport);
+void hclge_dbg_dump_rst_info(struct hclge_dev *hdev);
 #endif

drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c

@@ -1569,6 +1569,31 @@ static int hclgevf_reset_prepare_wait(struct hclgevf_dev *hdev)
 	return ret;
 }
 
+static void hclgevf_dump_rst_info(struct hclgevf_dev *hdev)
+{
+	dev_info(&hdev->pdev->dev, "VF function reset count: %u\n",
+		 hdev->rst_stats.vf_func_rst_cnt);
+	dev_info(&hdev->pdev->dev, "FLR reset count: %u\n",
+		 hdev->rst_stats.flr_rst_cnt);
+	dev_info(&hdev->pdev->dev, "VF reset count: %u\n",
+		 hdev->rst_stats.vf_rst_cnt);
+	dev_info(&hdev->pdev->dev, "reset done count: %u\n",
+		 hdev->rst_stats.rst_done_cnt);
+	dev_info(&hdev->pdev->dev, "reset count: %u\n",
+		 hdev->rst_stats.rst_cnt);
+	dev_info(&hdev->pdev->dev, "reset fail count: %u\n",
+		 hdev->rst_stats.rst_fail_cnt);
+	dev_info(&hdev->pdev->dev, "vector0 interrupt enable status: 0x%x\n",
+		 hclgevf_read_dev(&hdev->hw, HCLGEVF_MISC_VECTOR_REG_BASE));
+	dev_info(&hdev->pdev->dev, "vector0 interrupt status: 0x%x\n",
+		 hclgevf_read_dev(&hdev->hw, HCLGEVF_VECTOR0_CMDQ_STAT_REG));
+	dev_info(&hdev->pdev->dev, "handshake status: 0x%x\n",
+		 hclgevf_read_dev(&hdev->hw, HCLGEVF_CMDQ_TX_DEPTH_REG));
+	dev_info(&hdev->pdev->dev, "function reset status: 0x%x\n",
+		 hclgevf_read_dev(&hdev->hw, HCLGEVF_RST_ING));
+	dev_info(&hdev->pdev->dev, "hdev state: 0x%lx\n", hdev->state);
+}
+
 static void hclgevf_reset_err_handle(struct hclgevf_dev *hdev)
 {
 	/* recover handshake status with IMP when reset fail */
@@ -1583,6 +1608,8 @@ static void hclgevf_reset_err_handle(struct hclgevf_dev *hdev)
 	if (hclgevf_is_reset_pending(hdev)) {
 		set_bit(HCLGEVF_RESET_PENDING, &hdev->reset_state);
 		hclgevf_reset_task_schedule(hdev);
+	} else {
+		hclgevf_dump_rst_info(hdev);
 	}
 }