From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04D1FC4320A for ; Thu, 26 Aug 2021 11:26:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DE4B060F35 for ; Thu, 26 Aug 2021 11:26:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242199AbhHZL0o (ORCPT ); Thu, 26 Aug 2021 07:26:44 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]:8777 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241883AbhHZL0l (ORCPT ); Thu, 26 Aug 2021 07:26:41 -0400 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.57]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4GwL9n5VYwzYtrv; Thu, 26 Aug 2021 19:25:17 +0800 (CST) Received: from dggemi759-chm.china.huawei.com (10.1.198.145) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Thu, 26 Aug 2021 19:25:52 +0800 Received: from localhost.localdomain (10.67.165.24) by dggemi759-chm.china.huawei.com (10.1.198.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Thu, 26 Aug 2021 19:25:52 +0800 From: Guangbin Huang To: , CC: , , , Subject: [PATCH net 1/7] net: hns3: clear hardware resource when loading driver Date: Thu, 26 Aug 2021 19:21:55 +0800 Message-ID: <1629976921-43438-2-git-send-email-huangguangbin2@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1629976921-43438-1-git-send-email-huangguangbin2@huawei.com> References: <1629976921-43438-1-git-send-email-huangguangbin2@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.67.165.24] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggemi759-chm.china.huawei.com (10.1.198.145) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yufeng Mo 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 --- .../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h | 3 +++ .../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 26 ++++++++++++++++++++++ 2 files changed, 29 insertions(+) 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; -- 2.8.1