From 1a6d281946c330cee2855f6d0cd796616e54601f Mon Sep 17 00:00:00 2001 From: Yufeng Mo Date: Thu, 26 Aug 2021 19:21:55 +0800 Subject: net: hns3: clear hardware resource when loading driver If a PF is bonded to a virtual machine and the virtual machine exits unexpectedly, some hardware resource cannot be cleared. In this case, loading driver may cause exceptions. Therefore, the hardware resource needs to be cleared when the driver is loaded. Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Yufeng Mo Signed-off-by: Salil Mehta Signed-off-by: Guangbin Huang Signed-off-by: Jakub Kicinski --- .../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h | 3 +++ .../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 26 ++++++++++++++++++++++ 2 files changed, 29 insertions(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h index 18bde77ef944..d455d689d93a 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h @@ -270,6 +270,9 @@ enum hclge_opcode_type { /* Led command */ HCLGE_OPC_LED_STATUS_CFG = 0xB000, + /* clear hardware resource command */ + HCLGE_OPC_CLEAR_HW_RESOURCE = 0x700B, + /* NCL config command */ HCLGE_OPC_QUERY_NCL_CONFIG = 0x7011, diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index ebeaf12e409b..ac88608a94b6 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -11443,6 +11443,28 @@ static void hclge_clear_resetting_state(struct hclge_dev *hdev) } } +static int hclge_clear_hw_resource(struct hclge_dev *hdev) +{ + struct hclge_desc desc; + int ret; + + hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_CLEAR_HW_RESOURCE, false); + + ret = hclge_cmd_send(&hdev->hw, &desc, 1); + /* This new command is only supported by new firmware, it will + * fail with older firmware. Error value -EOPNOSUPP can only be + * returned by older firmware running this command, to keep code + * backward compatible we will override this value and return + * success. + */ + if (ret && ret != -EOPNOTSUPP) { + dev_err(&hdev->pdev->dev, + "failed to clear hw resource, ret = %d\n", ret); + return ret; + } + return 0; +} + static void hclge_init_rxd_adv_layout(struct hclge_dev *hdev) { if (hnae3_ae_dev_rxd_adv_layout_supported(hdev->ae_dev)) @@ -11492,6 +11514,10 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev) if (ret) goto err_cmd_uninit; + ret = hclge_clear_hw_resource(hdev); + if (ret) + goto err_cmd_uninit; + ret = hclge_get_cap(hdev); if (ret) goto err_cmd_uninit; -- cgit v1.2.3