From patchwork Tue Oct 18 11:15:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 13010243 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 E7DFCC433FE for ; Tue, 18 Oct 2022 10:45:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229957AbiJRKpt (ORCPT ); Tue, 18 Oct 2022 06:45:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59060 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229845AbiJRKpn (ORCPT ); Tue, 18 Oct 2022 06:45:43 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CED15B4892; Tue, 18 Oct 2022 03:45:42 -0700 (PDT) Received: from fraeml734-chm.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Ms9TB287pz67NY6; Tue, 18 Oct 2022 18:43:58 +0800 (CST) Received: from lhrpeml500003.china.huawei.com (7.191.162.67) 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 15.1.2375.31; Tue, 18 Oct 2022 12:45:41 +0200 Received: from localhost.localdomain (10.69.192.58) by lhrpeml500003.china.huawei.com (7.191.162.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 18 Oct 2022 11:45:37 +0100 From: John Garry To: , , , CC: , , , , , , John Garry Subject: [PATCH v4 1/7] scsi: libsas: Add sas_task_find_rq() Date: Tue, 18 Oct 2022 19:15:57 +0800 Message-ID: <1666091763-11023-2-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1666091763-11023-1-git-send-email-john.garry@huawei.com> References: <1666091763-11023-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To lhrpeml500003.china.huawei.com (7.191.162.67) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org blk-mq already provides a unique tag per request. Some libsas LLDDs - like hisi_sas - already use this tag as the unique per-IO HW tag. Add a common function to provide the request associated with a sas_task for all libsas LLDDs. Signed-off-by: John Garry Reviewed-by: Jack Wang Reviewed-by: Jason Yan Reviewed-by: Hannes Reinecke --- include/scsi/libsas.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index ec6c9ecd8d12..1aee3d0ebbb2 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -644,6 +644,24 @@ static inline bool sas_is_internal_abort(struct sas_task *task) return task->task_proto == SAS_PROTOCOL_INTERNAL_ABORT; } +static inline struct request *sas_task_find_rq(struct sas_task *task) +{ + struct scsi_cmnd *scmd; + + if (task->task_proto & SAS_PROTOCOL_STP_ALL) { + struct ata_queued_cmd *qc = task->uldd_task; + + scmd = qc ? qc->scsicmd : NULL; + } else { + scmd = task->uldd_task; + } + + if (!scmd) + return NULL; + + return scsi_cmd_to_rq(scmd); +} + struct sas_domain_function_template { /* The class calls these to notify the LLDD of an event. */ void (*lldd_port_formed)(struct asd_sas_phy *); From patchwork Tue Oct 18 11:15:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 13010244 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 901ECC4332F for ; Tue, 18 Oct 2022 10:45:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229970AbiJRKpx (ORCPT ); Tue, 18 Oct 2022 06:45:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59074 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229605AbiJRKpr (ORCPT ); Tue, 18 Oct 2022 06:45:47 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E7B28B44A5; Tue, 18 Oct 2022 03:45:45 -0700 (PDT) Received: from fraeml714-chm.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Ms9TF2yy5z67hlj; Tue, 18 Oct 2022 18:44:01 +0800 (CST) Received: from lhrpeml500003.china.huawei.com (7.191.162.67) by fraeml714-chm.china.huawei.com (10.206.15.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 18 Oct 2022 12:45:44 +0200 Received: from localhost.localdomain (10.69.192.58) by lhrpeml500003.china.huawei.com (7.191.162.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 18 Oct 2022 11:45:41 +0100 From: John Garry To: , , , CC: , , , , , , John Garry Subject: [PATCH v4 2/7] scsi: hisi_sas: Use sas_task_find_rq() Date: Tue, 18 Oct 2022 19:15:58 +0800 Message-ID: <1666091763-11023-3-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1666091763-11023-1-git-send-email-john.garry@huawei.com> References: <1666091763-11023-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To lhrpeml500003.china.huawei.com (7.191.162.67) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Use sas_task_find_rq() to lookup the request per task for its driver tag. Signed-off-by: John Garry Reviewed-by: Damien Le Moal Reviewed-by: Hannes Reinecke --- drivers/scsi/hisi_sas/hisi_sas_main.c | 26 ++++++++------------------ 1 file changed, 8 insertions(+), 18 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 10813836a728..26e474b0f53f 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -177,13 +177,13 @@ static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx) } static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, - struct scsi_cmnd *scsi_cmnd) + struct request *rq) { int index; void *bitmap = hisi_hba->slot_index_tags; - if (scsi_cmnd) - return scsi_cmd_to_rq(scsi_cmnd)->tag; + if (rq) + return rq->tag; spin_lock(&hisi_hba->lock); index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count, @@ -461,11 +461,11 @@ static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) struct asd_sas_port *sas_port = device->port; struct hisi_sas_device *sas_dev = device->lldd_dev; bool internal_abort = sas_is_internal_abort(task); - struct scsi_cmnd *scmd = NULL; struct hisi_sas_dq *dq = NULL; struct hisi_sas_port *port; struct hisi_hba *hisi_hba; struct hisi_sas_slot *slot; + struct request *rq = NULL; struct device *dev; int rc; @@ -520,22 +520,12 @@ static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) return -ECOMM; } - if (task->uldd_task) { - struct ata_queued_cmd *qc; - - if (dev_is_sata(device)) { - qc = task->uldd_task; - scmd = qc->scsicmd; - } else { - scmd = task->uldd_task; - } - } - - if (scmd) { + rq = sas_task_find_rq(task); + if (rq) { unsigned int dq_index; u32 blk_tag; - blk_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd)); + blk_tag = blk_mq_unique_tag(rq); dq_index = blk_mq_unique_tag_to_hwq(blk_tag); dq = &hisi_hba->dq[dq_index]; } else { @@ -580,7 +570,7 @@ static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) if (!internal_abort && hisi_hba->hw->slot_index_alloc) rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device); else - rc = hisi_sas_slot_index_alloc(hisi_hba, scmd); + rc = hisi_sas_slot_index_alloc(hisi_hba, rq); if (rc < 0) goto err_out_dif_dma_unmap; From patchwork Tue Oct 18 11:15:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 13010245 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 E9424C43217 for ; Tue, 18 Oct 2022 10:45:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229958AbiJRKp4 (ORCPT ); Tue, 18 Oct 2022 06:45:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229968AbiJRKpx (ORCPT ); Tue, 18 Oct 2022 06:45:53 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AE1C6B48B6; Tue, 18 Oct 2022 03:45:49 -0700 (PDT) Received: from fraeml713-chm.china.huawei.com (unknown [172.18.147.201]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Ms9V56fvlz689QP; Tue, 18 Oct 2022 18:44:45 +0800 (CST) Received: from lhrpeml500003.china.huawei.com (7.191.162.67) by fraeml713-chm.china.huawei.com (10.206.15.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 18 Oct 2022 12:45:47 +0200 Received: from localhost.localdomain (10.69.192.58) by lhrpeml500003.china.huawei.com (7.191.162.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 18 Oct 2022 11:45:44 +0100 From: John Garry To: , , , CC: , , , , , , John Garry Subject: [PATCH v4 3/7] scsi: hisi_sas: Put reserved tags in lower region of tagset Date: Tue, 18 Oct 2022 19:15:59 +0800 Message-ID: <1666091763-11023-4-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1666091763-11023-1-git-send-email-john.garry@huawei.com> References: <1666091763-11023-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To lhrpeml500003.china.huawei.com (7.191.162.67) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org To be consistent with blk-mq, put the reserved tags in the lower region of the tagset. Eventually we hope to get rid of all this reserved tag management. Signed-off-by: John Garry Reviewed-by: Hannes Reinecke --- drivers/scsi/hisi_sas/hisi_sas_main.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 26e474b0f53f..54860d252466 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -183,16 +183,16 @@ static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, void *bitmap = hisi_hba->slot_index_tags; if (rq) - return rq->tag; + return rq->tag + HISI_SAS_RESERVED_IPTT; spin_lock(&hisi_hba->lock); - index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count, + index = find_next_zero_bit(bitmap, HISI_SAS_RESERVED_IPTT, hisi_hba->last_slot_index + 1); - if (index >= hisi_hba->slot_index_count) { + if (index >= HISI_SAS_RESERVED_IPTT) { index = find_next_zero_bit(bitmap, - hisi_hba->slot_index_count, - HISI_SAS_UNRESERVED_IPTT); - if (index >= hisi_hba->slot_index_count) { + HISI_SAS_RESERVED_IPTT, + 0); + if (index >= HISI_SAS_RESERVED_IPTT) { spin_unlock(&hisi_hba->lock); return -SAS_QUEUE_FULL; } @@ -2216,7 +2216,7 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba) if (!hisi_hba->sata_breakpoint) goto err_out; - hisi_hba->last_slot_index = HISI_SAS_UNRESERVED_IPTT; + hisi_hba->last_slot_index = 0; hisi_hba->wq = create_singlethread_workqueue(dev_name(dev)); if (!hisi_hba->wq) { From patchwork Tue Oct 18 11:16:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 13010246 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 EE1A7C433FE for ; Tue, 18 Oct 2022 10:46:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229845AbiJRKp7 (ORCPT ); Tue, 18 Oct 2022 06:45:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59250 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229914AbiJRKpy (ORCPT ); Tue, 18 Oct 2022 06:45:54 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 318F4B5141; Tue, 18 Oct 2022 03:45:52 -0700 (PDT) Received: from fraeml715-chm.china.huawei.com (unknown [172.18.147.226]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Ms9Rj5DQRz67nGj; Tue, 18 Oct 2022 18:42:41 +0800 (CST) Received: from lhrpeml500003.china.huawei.com (7.191.162.67) by fraeml715-chm.china.huawei.com (10.206.15.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 18 Oct 2022 12:45:50 +0200 Received: from localhost.localdomain (10.69.192.58) by lhrpeml500003.china.huawei.com (7.191.162.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 18 Oct 2022 11:45:47 +0100 From: John Garry To: , , , CC: , , , , , , John Garry Subject: [PATCH v4 4/7] scsi: pm8001: Remove pm8001_tag_init() Date: Tue, 18 Oct 2022 19:16:00 +0800 Message-ID: <1666091763-11023-5-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1666091763-11023-1-git-send-email-john.garry@huawei.com> References: <1666091763-11023-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To lhrpeml500003.china.huawei.com (7.191.162.67) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Igor Pylypiv In commit 5a141315ed7c ("scsi: pm80xx: Increase the number of outstanding I/O supported to 1024") the pm8001_ha->tags allocation was moved into pm8001_init_ccb_tag(). This changed the execution order of allocation. pm8001_tag_init() used to be called after the pm8001_ha->tags allocation and now it is called before the allocation. Before: pm8001_pci_probe() `--> pm8001_pci_alloc() `--> pm8001_alloc() `--> pm8001_ha->tags = kzalloc(...) `--> pm8001_tag_init(pm8001_ha); // OK: tags are allocated After: pm8001_pci_probe() `--> pm8001_pci_alloc() | `--> pm8001_alloc() | `--> pm8001_tag_init(pm8001_ha); // NOK: tags are not allocated | `--> pm8001_init_ccb_tag() `--> pm8001_ha->tags = kzalloc(...) // today it is bitmap_zalloc() Since pm8001_ha->tags_num is zero when pm8001_tag_init() is called it does nothing. Tags memory is allocated with bitmap_zalloc() so there is no need to manually clear each bit with pm8001_tag_free(). Reviewed-by: Changyuan Lyu Signed-off-by: Igor Pylypiv Signed-off-by: John Garry Reviewed-by: Damien Le Moal Reviewed-by: Jack Wang Reviewed-by: Hannes Reinecke --- drivers/scsi/pm8001/pm8001_init.c | 2 -- drivers/scsi/pm8001/pm8001_sas.c | 7 ------- drivers/scsi/pm8001/pm8001_sas.h | 1 - 3 files changed, 10 deletions(-) diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c index 2ff2fac1e403..040a8280f23b 100644 --- a/drivers/scsi/pm8001/pm8001_init.c +++ b/drivers/scsi/pm8001/pm8001_init.c @@ -436,8 +436,6 @@ static int pm8001_alloc(struct pm8001_hba_info *pm8001_ha, atomic_set(&pm8001_ha->devices[i].running_req, 0); } pm8001_ha->flags = PM8001F_INIT_TIME; - /* Initialize tags */ - pm8001_tag_init(pm8001_ha); return 0; err_out_nodev: diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c index 51230b827149..c9fa3328f3fa 100644 --- a/drivers/scsi/pm8001/pm8001_sas.c +++ b/drivers/scsi/pm8001/pm8001_sas.c @@ -96,13 +96,6 @@ int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out) return 0; } -void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha) -{ - int i; - for (i = 0; i < pm8001_ha->tags_num; ++i) - pm8001_tag_free(pm8001_ha, i); -} - /** * pm8001_mem_alloc - allocate memory for pm8001. * @pdev: pci device. diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h index 16a753d5e8a7..ecb98bc5a8d0 100644 --- a/drivers/scsi/pm8001/pm8001_sas.h +++ b/drivers/scsi/pm8001/pm8001_sas.h @@ -632,7 +632,6 @@ extern struct workqueue_struct *pm8001_wq; /******************** function prototype *********************/ int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out); -void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha); u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag); void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha, struct pm8001_ccb_info *ccb); From patchwork Tue Oct 18 11:16:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 13010247 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 35D89C4332F for ; Tue, 18 Oct 2022 10:46:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229914AbiJRKq0 (ORCPT ); Tue, 18 Oct 2022 06:46:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59366 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229950AbiJRKp7 (ORCPT ); Tue, 18 Oct 2022 06:45:59 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4CFDFB48BB; Tue, 18 Oct 2022 03:45:56 -0700 (PDT) Received: from fraeml712-chm.china.huawei.com (unknown [172.18.147.206]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Ms9Rn2v8hz67lLL; Tue, 18 Oct 2022 18:42:45 +0800 (CST) Received: from lhrpeml500003.china.huawei.com (7.191.162.67) by fraeml712-chm.china.huawei.com (10.206.15.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 18 Oct 2022 12:45:53 +0200 Received: from localhost.localdomain (10.69.192.58) by lhrpeml500003.china.huawei.com (7.191.162.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 18 Oct 2022 11:45:50 +0100 From: John Garry To: , , , CC: , , , , , , John Garry Subject: [PATCH v4 5/7] scsi: pm8001: Use sas_task_find_rq() for tagging Date: Tue, 18 Oct 2022 19:16:01 +0800 Message-ID: <1666091763-11023-6-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1666091763-11023-1-git-send-email-john.garry@huawei.com> References: <1666091763-11023-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To lhrpeml500003.china.huawei.com (7.191.162.67) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The request associated with a scsi command coming from the block layer has a unique tag, so use that when possible for getting a CCB. Unfortunately we don't support reserved commands in the SCSI midlayer yet, so in the interim continue to manage those tags internally (along with tags for private commands). Signed-off-by: John Garry Reviewed-by: Jack Wang Reviewed-by: Damien Le Moal Reviewed-by: Hannes Reinecke --- drivers/scsi/pm8001/pm8001_init.c | 12 ++++-------- drivers/scsi/pm8001/pm8001_sas.c | 13 +++++++++---- drivers/scsi/pm8001/pm8001_sas.h | 11 ++++++++--- drivers/scsi/pm8001/pm80xx_hwi.c | 19 +++---------------- 4 files changed, 24 insertions(+), 31 deletions(-) diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c index 040a8280f23b..a1df61205b20 100644 --- a/drivers/scsi/pm8001/pm8001_init.c +++ b/drivers/scsi/pm8001/pm8001_init.c @@ -196,7 +196,7 @@ static void pm8001_free(struct pm8001_hba_info *pm8001_ha) } PM8001_CHIP_DISP->chip_iounmap(pm8001_ha); flush_workqueue(pm8001_wq); - bitmap_free(pm8001_ha->tags); + bitmap_free(pm8001_ha->rsvd_tags); kfree(pm8001_ha); } @@ -1208,18 +1208,15 @@ static int pm8001_init_ccb_tag(struct pm8001_hba_info *pm8001_ha) struct Scsi_Host *shost = pm8001_ha->shost; struct device *dev = pm8001_ha->dev; u32 max_out_io, ccb_count; - u32 can_queue; int i; max_out_io = pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_out_io; ccb_count = min_t(int, PM8001_MAX_CCB, max_out_io); - /* Update to the scsi host*/ - can_queue = ccb_count - PM8001_RESERVE_SLOT; - shost->can_queue = can_queue; + shost->can_queue = ccb_count - PM8001_RESERVE_SLOT; - pm8001_ha->tags = bitmap_zalloc(ccb_count, GFP_KERNEL); - if (!pm8001_ha->tags) + pm8001_ha->rsvd_tags = bitmap_zalloc(PM8001_RESERVE_SLOT, GFP_KERNEL); + if (!pm8001_ha->rsvd_tags) goto err_out; /* Memory region for ccb_info*/ @@ -1244,7 +1241,6 @@ static int pm8001_init_ccb_tag(struct pm8001_hba_info *pm8001_ha) pm8001_ha->ccb_info[i].task = NULL; pm8001_ha->ccb_info[i].ccb_tag = PM8001_INVALID_TAG; pm8001_ha->ccb_info[i].device = NULL; - ++pm8001_ha->tags_num; } return 0; diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c index c9fa3328f3fa..2359e827c9e6 100644 --- a/drivers/scsi/pm8001/pm8001_sas.c +++ b/drivers/scsi/pm8001/pm8001_sas.c @@ -65,9 +65,12 @@ static int pm8001_find_tag(struct sas_task *task, u32 *tag) */ void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag) { - void *bitmap = pm8001_ha->tags; + void *bitmap = pm8001_ha->rsvd_tags; unsigned long flags; + if (tag >= PM8001_RESERVE_SLOT) + return; + spin_lock_irqsave(&pm8001_ha->bitmap_lock, flags); __clear_bit(tag, bitmap); spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags); @@ -80,18 +83,20 @@ void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag) */ int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out) { - void *bitmap = pm8001_ha->tags; + void *bitmap = pm8001_ha->rsvd_tags; unsigned long flags; unsigned int tag; spin_lock_irqsave(&pm8001_ha->bitmap_lock, flags); - tag = find_first_zero_bit(bitmap, pm8001_ha->tags_num); - if (tag >= pm8001_ha->tags_num) { + tag = find_first_zero_bit(bitmap, PM8001_RESERVE_SLOT); + if (tag >= PM8001_RESERVE_SLOT) { spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags); return -SAS_QUEUE_FULL; } __set_bit(tag, bitmap); spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags); + + /* reserved tags are in the lower region of the tagset */ *tag_out = tag; return 0; } diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h index ecb98bc5a8d0..cf5f1b091959 100644 --- a/drivers/scsi/pm8001/pm8001_sas.h +++ b/drivers/scsi/pm8001/pm8001_sas.h @@ -510,8 +510,7 @@ struct pm8001_hba_info { u32 chip_id; const struct pm8001_chip_info *chip; struct completion *nvmd_completion; - int tags_num; - unsigned long *tags; + unsigned long *rsvd_tags; struct pm8001_phy phy[PM8001_MAX_PHYS]; struct pm8001_port port[PM8001_MAX_PHYS]; u32 id; @@ -736,9 +735,15 @@ pm8001_ccb_alloc(struct pm8001_hba_info *pm8001_ha, struct pm8001_device *dev, struct sas_task *task) { struct pm8001_ccb_info *ccb; + struct request *rq = NULL; u32 tag; - if (pm8001_tag_alloc(pm8001_ha, &tag)) { + if (task) + rq = sas_task_find_rq(task); + + if (rq) { + tag = rq->tag + PM8001_RESERVE_SLOT; + } else if (pm8001_tag_alloc(pm8001_ha, &tag)) { pm8001_dbg(pm8001_ha, FAIL, "Failed to allocate a tag\n"); return NULL; } diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index 4484c498bcb6..bc71db442dd9 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.c +++ b/drivers/scsi/pm8001/pm80xx_hwi.c @@ -4247,25 +4247,12 @@ static int check_enc_sat_cmd(struct sas_task *task) static u32 pm80xx_chip_get_q_index(struct sas_task *task) { - struct scsi_cmnd *scmd = NULL; - u32 blk_tag; + struct request *rq = sas_task_find_rq(task); - if (task->uldd_task) { - struct ata_queued_cmd *qc; - - if (dev_is_sata(task->dev)) { - qc = task->uldd_task; - scmd = qc->scsicmd; - } else { - scmd = task->uldd_task; - } - } - - if (!scmd) + if (!rq) return 0; - blk_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd)); - return blk_mq_unique_tag_to_hwq(blk_tag); + return blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(rq)); } /** From patchwork Tue Oct 18 11:16:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 13010248 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 0B801C433FE for ; Tue, 18 Oct 2022 10:46:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230086AbiJRKqt (ORCPT ); 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Tue, 18 Oct 2022 11:45:53 +0100 From: John Garry To: , , , CC: , , , , , , John Garry Subject: [PATCH v4 6/7] scsi: mvsas: Delete mvs_tag_init() Date: Tue, 18 Oct 2022 19:16:02 +0800 Message-ID: <1666091763-11023-7-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1666091763-11023-1-git-send-email-john.garry@huawei.com> References: <1666091763-11023-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To lhrpeml500003.china.huawei.com (7.191.162.67) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org All mvs_tag_init() does is zero the tag bitmap, but this is already done with the kzalloc() call to alloc the tags, so delete this unneeded function. Signed-off-by: John Garry Reviewed-by: Damien Le Moal Reviewed-by: Hannes Reinecke --- drivers/scsi/mvsas/mv_init.c | 2 -- drivers/scsi/mvsas/mv_sas.c | 7 ------- drivers/scsi/mvsas/mv_sas.h | 1 - 3 files changed, 10 deletions(-) diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c index 2fde496fff5f..c85fb812ad43 100644 --- a/drivers/scsi/mvsas/mv_init.c +++ b/drivers/scsi/mvsas/mv_init.c @@ -286,8 +286,6 @@ static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost) } mvi->tags_num = slot_nr; - /* Initialize tags */ - mvs_tag_init(mvi); return 0; err_out: return 1; diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c index bf7d4995b257..3aed5e3e0c8c 100644 --- a/drivers/scsi/mvsas/mv_sas.c +++ b/drivers/scsi/mvsas/mv_sas.c @@ -51,13 +51,6 @@ inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out) return 0; } -void mvs_tag_init(struct mvs_info *mvi) -{ - int i; - for (i = 0; i < mvi->tags_num; ++i) - mvs_tag_clear(mvi, i); -} - static struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev) { unsigned long i = 0, j = 0, hi = 0; diff --git a/drivers/scsi/mvsas/mv_sas.h b/drivers/scsi/mvsas/mv_sas.h index 509d8f32a04f..fe57665bdb50 100644 --- a/drivers/scsi/mvsas/mv_sas.h +++ b/drivers/scsi/mvsas/mv_sas.h @@ -428,7 +428,6 @@ void mvs_tag_clear(struct mvs_info *mvi, u32 tag); void mvs_tag_free(struct mvs_info *mvi, u32 tag); void mvs_tag_set(struct mvs_info *mvi, unsigned int tag); int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out); -void mvs_tag_init(struct mvs_info *mvi); void mvs_iounmap(void __iomem *regs); int mvs_ioremap(struct mvs_info *mvi, int bar, int bar_ex); void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard); From patchwork Tue Oct 18 11:16:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 13010249 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 104FDC4332F for ; Tue, 18 Oct 2022 10:46:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230109AbiJRKqv (ORCPT ); Tue, 18 Oct 2022 06:46:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60026 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229909AbiJRKqY (ORCPT ); Tue, 18 Oct 2022 06:46:24 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 66F30B5163; Tue, 18 Oct 2022 03:46:02 -0700 (PDT) Received: from fraeml709-chm.china.huawei.com (unknown [172.18.147.201]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Ms9Rv4Fcmz67Mrg; Tue, 18 Oct 2022 18:42:51 +0800 (CST) Received: from lhrpeml500003.china.huawei.com (7.191.162.67) by fraeml709-chm.china.huawei.com (10.206.15.37) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 18 Oct 2022 12:46:00 +0200 Received: from localhost.localdomain (10.69.192.58) by lhrpeml500003.china.huawei.com (7.191.162.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 18 Oct 2022 11:45:56 +0100 From: John Garry To: , , , CC: , , , , , , John Garry Subject: [PATCH v4 7/7] scsi: mvsas: Use sas_task_find_rq() for tagging Date: Tue, 18 Oct 2022 19:16:03 +0800 Message-ID: <1666091763-11023-8-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1666091763-11023-1-git-send-email-john.garry@huawei.com> References: <1666091763-11023-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To lhrpeml500003.china.huawei.com (7.191.162.67) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The request associated with a scsi command coming from the block layer has a unique tag, so use that when possible for getting a slot. Unfortunately we don't support reserved commands in the SCSI midlayer yet. As such, SMP tasks - as an example - will not have a request associated, so in the interim continue to manage those tags for that type of sas_task internally. We reserve an arbitrary 4 tags for these internal tags. Indeed, we already decrement MVS_RSVD_SLOTS by 2 for the shost can_queue when flag MVF_FLAG_SOC is set. This change was made in commit 20b09c2992fef ("[PATCH] [SCSI] mvsas: add support for 94xx; layout change; bug fixes"), but what those 2 slots are used for is not obvious. Also make the tag management functions static, where possible. Signed-off-by: John Garry --- drivers/scsi/mvsas/mv_defs.h | 1 + drivers/scsi/mvsas/mv_init.c | 9 +++++---- drivers/scsi/mvsas/mv_sas.c | 35 ++++++++++++++++++++++------------- drivers/scsi/mvsas/mv_sas.h | 7 +------ 4 files changed, 29 insertions(+), 23 deletions(-) diff --git a/drivers/scsi/mvsas/mv_defs.h b/drivers/scsi/mvsas/mv_defs.h index 7123a2efbf58..8ef174cd4d37 100644 --- a/drivers/scsi/mvsas/mv_defs.h +++ b/drivers/scsi/mvsas/mv_defs.h @@ -40,6 +40,7 @@ enum driver_configuration { MVS_ATA_CMD_SZ = 96, /* SATA command table buffer size */ MVS_OAF_SZ = 64, /* Open address frame buffer size */ MVS_QUEUE_SIZE = 64, /* Support Queue depth */ + MVS_RSVD_SLOTS = 4, MVS_SOC_CAN_QUEUE = MVS_SOC_SLOTS - 2, }; diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c index c85fb812ad43..cfe84473a515 100644 --- a/drivers/scsi/mvsas/mv_init.c +++ b/drivers/scsi/mvsas/mv_init.c @@ -142,7 +142,7 @@ static void mvs_free(struct mvs_info *mvi) scsi_host_put(mvi->shost); list_for_each_entry(mwq, &mvi->wq_list, entry) cancel_delayed_work(&mwq->work_q); - kfree(mvi->tags); + kfree(mvi->rsvd_tags); kfree(mvi); } @@ -284,7 +284,6 @@ static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost) printk(KERN_DEBUG "failed to create dma pool %s.\n", pool_name); goto err_out; } - mvi->tags_num = slot_nr; return 0; err_out: @@ -367,8 +366,8 @@ static struct mvs_info *mvs_pci_alloc(struct pci_dev *pdev, mvi->sas = sha; mvi->shost = shost; - mvi->tags = kzalloc(MVS_CHIP_SLOT_SZ>>3, GFP_KERNEL); - if (!mvi->tags) + mvi->rsvd_tags = bitmap_zalloc(MVS_RSVD_SLOTS, GFP_KERNEL); + if (!mvi->rsvd_tags) goto err_out; if (MVS_CHIP_DISP->chip_ioremap(mvi)) @@ -469,6 +468,8 @@ static void mvs_post_sas_ha_init(struct Scsi_Host *shost, else can_queue = MVS_CHIP_SLOT_SZ; + can_queue -= MVS_RSVD_SLOTS; + shost->sg_tablesize = min_t(u16, SG_ALL, MVS_MAX_SG); shost->can_queue = can_queue; mvi->shost->cmd_per_lun = MVS_QUEUE_SIZE; diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c index 3aed5e3e0c8c..9978c424214c 100644 --- a/drivers/scsi/mvsas/mv_sas.c +++ b/drivers/scsi/mvsas/mv_sas.c @@ -20,31 +20,34 @@ static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag) return 0; } -void mvs_tag_clear(struct mvs_info *mvi, u32 tag) +static void mvs_tag_clear(struct mvs_info *mvi, u32 tag) { - void *bitmap = mvi->tags; + void *bitmap = mvi->rsvd_tags; clear_bit(tag, bitmap); } -void mvs_tag_free(struct mvs_info *mvi, u32 tag) +static void mvs_tag_free(struct mvs_info *mvi, u32 tag) { + if (tag >= MVS_RSVD_SLOTS) + return; + mvs_tag_clear(mvi, tag); } -void mvs_tag_set(struct mvs_info *mvi, unsigned int tag) +static void mvs_tag_set(struct mvs_info *mvi, unsigned int tag) { - void *bitmap = mvi->tags; + void *bitmap = mvi->rsvd_tags; set_bit(tag, bitmap); } -inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out) +static int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out) { unsigned int index, tag; - void *bitmap = mvi->tags; + void *bitmap = mvi->rsvd_tags; - index = find_first_zero_bit(bitmap, mvi->tags_num); + index = find_first_zero_bit(bitmap, MVS_RSVD_SLOTS); tag = index; - if (tag >= mvi->tags_num) + if (tag >= MVS_RSVD_SLOTS) return -SAS_QUEUE_FULL; mvs_tag_set(mvi, tag); *tag_out = tag; @@ -696,6 +699,7 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf struct mvs_task_exec_info tei; struct mvs_slot_info *slot; u32 tag = 0xdeadbeef, n_elem = 0; + struct request *rq; int rc = 0; if (!dev->port) { @@ -760,9 +764,14 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf n_elem = task->num_scatter; } - rc = mvs_tag_alloc(mvi, &tag); - if (rc) - goto err_out; + rq = sas_task_find_rq(task); + if (rq) { + tag = rq->tag + MVS_RSVD_SLOTS; + } else { + rc = mvs_tag_alloc(mvi, &tag); + if (rc) + goto err_out; + } slot = &mvi->slot_info[tag]; @@ -857,7 +866,7 @@ int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags) static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc) { u32 slot_idx = rx_desc & RXQ_SLOT_MASK; - mvs_tag_clear(mvi, slot_idx); + mvs_tag_free(mvi, slot_idx); } static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task, diff --git a/drivers/scsi/mvsas/mv_sas.h b/drivers/scsi/mvsas/mv_sas.h index fe57665bdb50..68df771e2975 100644 --- a/drivers/scsi/mvsas/mv_sas.h +++ b/drivers/scsi/mvsas/mv_sas.h @@ -370,8 +370,7 @@ struct mvs_info { u32 chip_id; const struct mvs_chip_info *chip; - int tags_num; - unsigned long *tags; + unsigned long *rsvd_tags; /* further per-slot information */ struct mvs_phy phy[MVS_MAX_PHYS]; struct mvs_port port[MVS_MAX_PHYS]; @@ -424,10 +423,6 @@ struct mvs_task_exec_info { /******************** function prototype *********************/ void mvs_get_sas_addr(void *buf, u32 buflen); -void mvs_tag_clear(struct mvs_info *mvi, u32 tag); -void mvs_tag_free(struct mvs_info *mvi, u32 tag); -void mvs_tag_set(struct mvs_info *mvi, unsigned int tag); -int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out); void mvs_iounmap(void __iomem *regs); int mvs_ioremap(struct mvs_info *mvi, int bar, int bar_ex); void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard);