From patchwork Tue Jul 11 03:14:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: chenxiang X-Patchwork-Id: 13308007 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DCC2EB64DA for ; Tue, 11 Jul 2023 02:44:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229627AbjGKCol (ORCPT ); Mon, 10 Jul 2023 22:44:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41976 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229906AbjGKCoi (ORCPT ); Mon, 10 Jul 2023 22:44:38 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6472C188 for ; Mon, 10 Jul 2023 19:44:37 -0700 (PDT) Received: from kwepemi500016.china.huawei.com (unknown [172.30.72.56]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4R0Q9W0KYKzMqW1; Tue, 11 Jul 2023 10:41:19 +0800 (CST) Received: from localhost.localdomain (10.69.192.58) by kwepemi500016.china.huawei.com (7.221.188.220) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Tue, 11 Jul 2023 10:44:34 +0800 From: chenxiang To: , CC: , , Xingui Yang , Xiang Chen Subject: [PATCH 1/3] scsi: hisi_sas: Fix normally completed I/O analysed as failed Date: Tue, 11 Jul 2023 11:14:58 +0800 Message-ID: <1689045300-44318-2-git-send-email-chenxiang66@hisilicon.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1689045300-44318-1-git-send-email-chenxiang66@hisilicon.com> References: <1689045300-44318-1-git-send-email-chenxiang66@hisilicon.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemi500016.china.huawei.com (7.221.188.220) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Xingui Yang Pio read command has no response frame and the struct iu[1024] won't be filled, and it's found that I/Os which are normally completed will be analysed as failed in sas_ata_task_done() when iu contain abnormal dirty data. So ending_fis should not be filled by iu when the response frame hasn't been written to the memory. Fixes: d380f55503ed ("scsi: hisi_sas: Don't bother clearing status buffer IU in task prep") Signed-off-by: Xingui Yang Signed-off-by: Xiang Chen --- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 11 +++++++++-- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 6 ++++-- 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index 87d8e40..404aa7e 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -2026,6 +2026,11 @@ static void slot_err_v2_hw(struct hisi_hba *hisi_hba, u16 dma_tx_err_type = le16_to_cpu(err_record->dma_tx_err_type); u16 sipc_rx_err_type = le16_to_cpu(err_record->sipc_rx_err_type); u32 dma_rx_err_type = le32_to_cpu(err_record->dma_rx_err_type); + struct hisi_sas_complete_v2_hdr *complete_queue = + hisi_hba->complete_hdr[slot->cmplt_queue]; + struct hisi_sas_complete_v2_hdr *complete_hdr = + &complete_queue[slot->cmplt_queue_slot]; + u32 dw0 = le32_to_cpu(complete_hdr->dw0); int error = -1; if (err_phase == 1) { @@ -2310,7 +2315,8 @@ static void slot_err_v2_hw(struct hisi_hba *hisi_hba, break; } } - hisi_sas_sata_done(task, slot); + if (dw0 & CMPLT_HDR_RSPNS_XFRD_MSK) + hisi_sas_sata_done(task, slot); } break; default: @@ -2443,7 +2449,8 @@ static void slot_complete_v2_hw(struct hisi_hba *hisi_hba, case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: { ts->stat = SAS_SAM_STAT_GOOD; - hisi_sas_sata_done(task, slot); + if (dw0 & CMPLT_HDR_RSPNS_XFRD_MSK) + hisi_sas_sata_done(task, slot); break; } default: diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 20e1607..2f33e6b 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -2257,7 +2257,8 @@ slot_err_v3_hw(struct hisi_hba *hisi_hba, struct sas_task *task, ts->stat = SAS_OPEN_REJECT; ts->open_rej_reason = SAS_OREJ_RSVD_RETRY; } - hisi_sas_sata_done(task, slot); + if (dw0 & CMPLT_HDR_RSPNS_XFRD_MSK) + hisi_sas_sata_done(task, slot); break; case SAS_PROTOCOL_SMP: ts->stat = SAS_SAM_STAT_CHECK_CONDITION; @@ -2384,7 +2385,8 @@ static void slot_complete_v3_hw(struct hisi_hba *hisi_hba, case SAS_PROTOCOL_STP: case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: ts->stat = SAS_SAM_STAT_GOOD; - hisi_sas_sata_done(task, slot); + if (dw0 & CMPLT_HDR_RSPNS_XFRD_MSK) + hisi_sas_sata_done(task, slot); break; default: ts->stat = SAS_SAM_STAT_CHECK_CONDITION; From patchwork Tue Jul 11 03:14:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: chenxiang X-Patchwork-Id: 13308005 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8EB7EB64D9 for ; Tue, 11 Jul 2023 02:44:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229987AbjGKCok (ORCPT ); Mon, 10 Jul 2023 22:44:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41980 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229947AbjGKCoj (ORCPT ); Mon, 10 Jul 2023 22:44:39 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9961E1BB for ; Mon, 10 Jul 2023 19:44:37 -0700 (PDT) Received: from kwepemi500016.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4R0Q9W2y9WzMqYn; Tue, 11 Jul 2023 10:41:19 +0800 (CST) Received: from localhost.localdomain (10.69.192.58) by kwepemi500016.china.huawei.com (7.221.188.220) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Tue, 11 Jul 2023 10:44:35 +0800 From: chenxiang To: , CC: , , Yihang Li , Xiang Chen Subject: [PATCH 2/3] scsi: hisi_sas: Block requests before a debugfs snapshot Date: Tue, 11 Jul 2023 11:14:59 +0800 Message-ID: <1689045300-44318-3-git-send-email-chenxiang66@hisilicon.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1689045300-44318-1-git-send-email-chenxiang66@hisilicon.com> References: <1689045300-44318-1-git-send-email-chenxiang66@hisilicon.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemi500016.china.huawei.com (7.221.188.220) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Yihang Li When FIO and debugfs snapshot occur concurrently, some SATA I/Os are failed to return to the upper layer due to the setting of HISI_SAS_REJECT_CMD_BIT. Then the SCSI layer invokes the error processing thread. However, sas_ata_hard_reset() in EH also fails to be reset due to the setting of HISI_SAS_REJECT_CMD_BIT. As a result, the device is disabled. Calling scsi_block_requests() in the front of a debugfs snapshot and wait command complete before setting HISI_SAS_REJECT_CMD_BIT to avoid SATA I/O failures. Signed-off-by: Yihang Li Signed-off-by: Xiang Chen --- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 2f33e6b..7aad495 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -3106,21 +3106,25 @@ static const struct hisi_sas_debugfs_reg debugfs_ras_reg = { static void debugfs_snapshot_prepare_v3_hw(struct hisi_hba *hisi_hba) { - set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); - - hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0); + struct Scsi_Host *shost = hisi_hba->shost; + scsi_block_requests(shost); wait_cmds_complete_timeout_v3_hw(hisi_hba, 100, 5000); + set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); hisi_sas_sync_cqs(hisi_hba); + hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0); } static void debugfs_snapshot_restore_v3_hw(struct hisi_hba *hisi_hba) { + struct Scsi_Host *shost = hisi_hba->shost; + hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, (u32)((1ULL << hisi_hba->queue_count) - 1)); clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); + scsi_unblock_requests(shost); } static void read_iost_itct_cache_v3_hw(struct hisi_hba *hisi_hba, From patchwork Tue Jul 11 03:15:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: chenxiang X-Patchwork-Id: 13308006 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 74BC7C001DD for ; Tue, 11 Jul 2023 02:44:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230018AbjGKCom (ORCPT ); Mon, 10 Jul 2023 22:44:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229970AbjGKCoj (ORCPT ); Mon, 10 Jul 2023 22:44:39 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50E88E49 for ; Mon, 10 Jul 2023 19:44:38 -0700 (PDT) Received: from kwepemi500016.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4R0Q9t1kykztR9l; Tue, 11 Jul 2023 10:41:38 +0800 (CST) Received: from localhost.localdomain (10.69.192.58) by kwepemi500016.china.huawei.com (7.221.188.220) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Tue, 11 Jul 2023 10:44:35 +0800 From: chenxiang To: , CC: , , Yihang Li , Xiang Chen Subject: [PATCH 3/3] scsi: hisi_sas: Delete unused lock in hisi_sas_port_notify_formed() Date: Tue, 11 Jul 2023 11:15:00 +0800 Message-ID: <1689045300-44318-4-git-send-email-chenxiang66@hisilicon.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1689045300-44318-1-git-send-email-chenxiang66@hisilicon.com> References: <1689045300-44318-1-git-send-email-chenxiang66@hisilicon.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemi500016.china.huawei.com (7.221.188.220) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Yihang Li Currently spinlock hisi_hba->lock is used by interrupt and thread together which require to use spin_lock_irqsave/spin_unlcok_irqrestore, but some places still use spin_lock/unlock. Check with the code and find there is no necessary to use hisi_hba->lock in function hisi_sas_port_notify_formed() which is the only place that use spinlock in interrupt. So delete unused lock in hisi_sas_port_notify_formed(). Signed-off-by: Yihang Li Signed-off-by: Xiang Chen --- drivers/scsi/hisi_sas/hisi_sas_main.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 8f22ece..7a62590 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -1065,23 +1065,18 @@ EXPORT_SYMBOL_GPL(hisi_sas_phy_enable); static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy) { - struct sas_ha_struct *sas_ha = sas_phy->ha; - struct hisi_hba *hisi_hba = sas_ha->lldd_ha; struct hisi_sas_phy *phy = sas_phy->lldd_phy; struct asd_sas_port *sas_port = sas_phy->port; struct hisi_sas_port *port; - unsigned long flags; if (!sas_port) return; port = to_hisi_sas_port(sas_port); - spin_lock_irqsave(&hisi_hba->lock, flags); port->port_attached = 1; port->id = phy->port_id; phy->port = port; sas_port->lldd_port = port; - spin_unlock_irqrestore(&hisi_hba->lock, flags); } static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task *task,