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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1A632C433EF for ; Tue, 12 Oct 2021 12:31:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 00CAE610E5 for ; Tue, 12 Oct 2021 12:31:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236600AbhJLMdz (ORCPT ); Tue, 12 Oct 2021 08:33:55 -0400 Received: from frasgout.his.huawei.com ([185.176.79.56]:3971 "EHLO frasgout.his.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236437AbhJLMdn (ORCPT ); Tue, 12 Oct 2021 08:33:43 -0400 Received: from fraeml734-chm.china.huawei.com (unknown [172.18.147.226]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4HTFLh46pcz67bMk; Tue, 12 Oct 2021 20:28:12 +0800 (CST) Received: from lhreml724-chm.china.huawei.com (10.201.108.75) by fraeml734-chm.china.huawei.com (10.206.15.215) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.8; Tue, 12 Oct 2021 14:31:39 +0200 Received: from localhost.localdomain (10.69.192.58) by lhreml724-chm.china.huawei.com (10.201.108.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.8; Tue, 12 Oct 2021 13:31:37 +0100 From: John Garry To: , CC: , , , , Luo Jiaxing , John Garry Subject: [PATCH 4/4] scsi: hisi_sas: Disable SATA disk phy for severe I_T nexus reset failure Date: Tue, 12 Oct 2021 20:26:28 +0800 Message-ID: <1634041588-74824-5-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1634041588-74824-1-git-send-email-john.garry@huawei.com> References: <1634041588-74824-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To lhreml724-chm.china.huawei.com (10.201.108.75) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Luo Jiaxing If the softreset fails in the I_T reset, libsas will then continue to issue a controller reset to try to recover. However a faulty disk may cause the softreset to fail, and resetting the controller will not help this scenario. Indeed, we will just continue the cycle of error handle handling to try to recover. So if the softreset fails upon certain conditions, just disable the phy associated with the disk. The user needs to handle this problem. Signed-off-by: Luo Jiaxing Signed-off-by: John Garry --- drivers/scsi/hisi_sas/hisi_sas_main.c | 29 ++++++++++++++++++++++----- 1 file changed, 24 insertions(+), 5 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 5b091388c095..f206c433de32 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -1870,14 +1870,33 @@ static int hisi_sas_I_T_nexus_reset(struct domain_device *device) } hisi_sas_dereg_device(hisi_hba, device); - if (dev_is_sata(device)) { + rc = hisi_sas_debug_I_T_nexus_reset(device); + if (rc == TMF_RESP_FUNC_COMPLETE && dev_is_sata(device)) { + struct sas_phy *local_phy; + rc = hisi_sas_softreset_ata_disk(device); - if (rc == TMF_RESP_FUNC_FAILED) - return TMF_RESP_FUNC_FAILED; + switch (rc) { + case -ECOMM: + rc = -ENODEV; + break; + case TMF_RESP_FUNC_FAILED: + case -EMSGSIZE: + case -EIO: + local_phy = sas_get_local_phy(device); + rc = sas_phy_enable(local_phy, 0); + if (!rc) { + local_phy->enabled = 0; + dev_err(dev, "Disabled local phy of ATA disk %016llx due to softreset fail (%d)\n", + SAS_ADDR(device->sas_addr), rc); + rc = -ENODEV; + } + sas_put_local_phy(local_phy); + break; + default: + break; + } } - rc = hisi_sas_debug_I_T_nexus_reset(device); - if ((rc == TMF_RESP_FUNC_COMPLETE) || (rc == -ENODEV)) hisi_sas_release_task(hisi_hba, device); -- 2.26.2