From patchwork Thu Jun 9 10:29:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 12875214 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 B77F2CCA47E for ; Thu, 9 Jun 2022 10:37:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243171AbiFIKhS (ORCPT ); Thu, 9 Jun 2022 06:37:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243090AbiFIKgx (ORCPT ); Thu, 9 Jun 2022 06:36:53 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2D3DD215659; Thu, 9 Jun 2022 03:36:31 -0700 (PDT) Received: from fraeml711-chm.china.huawei.com (unknown [172.18.147.207]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4LJgTW6TRpz67bS0; Thu, 9 Jun 2022 18:35:11 +0800 (CST) Received: from lhreml724-chm.china.huawei.com (10.201.108.75) by fraeml711-chm.china.huawei.com (10.206.15.60) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Thu, 9 Jun 2022 12:36:29 +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 15.1.2375.24; Thu, 9 Jun 2022 11:36:26 +0100 From: John Garry To: , , , , , , CC: , , , , , John Garry Subject: [PATCH RFC v2 10/18] libata/scsi: libsas: Add sas_queuecommand_internal() Date: Thu, 9 Jun 2022 18:29:11 +0800 Message-ID: <1654770559-101375-11-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1654770559-101375-1-git-send-email-john.garry@huawei.com> References: <1654770559-101375-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To lhreml724-chm.china.huawei.com (10.201.108.75) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Add a callback for sht reserved_queuecommand callback. We need to add libata helper ata_is_scmd_ata_internal() as it is difficult to know whether the request should be queued as an ATA internal command. We will store the sas_task in the scsi_cmnd payload also in future. Signed-off-by: John Garry --- drivers/ata/libata-core.c | 8 ++++++++ drivers/scsi/libsas/sas_scsi_host.c | 21 +++++++++++++++++++++ include/linux/libata.h | 1 + include/scsi/libsas.h | 8 ++++++++ 4 files changed, 38 insertions(+) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 6b1aaeccb253..a9645951a0f0 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1454,6 +1454,14 @@ static void ata_internal_end_rq(struct request *rq, blk_status_t error) complete(waiting); } +bool ata_is_scmd_ata_internal(struct scsi_cmnd *scmd) +{ + struct request *rq = scsi_cmd_to_rq(scmd); + + return rq->end_io == ata_internal_end_rq; +} +EXPORT_SYMBOL_GPL(ata_is_scmd_ata_internal); + /** * ata_exec_internal_sg - execute libata internal command * @dev: Device to which the command is sent diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c index 9c82e5dc4fcc..42279a6d6b06 100644 --- a/drivers/scsi/libsas/sas_scsi_host.c +++ b/drivers/scsi/libsas/sas_scsi_host.c @@ -158,6 +158,27 @@ static struct sas_task *sas_create_task(struct scsi_cmnd *cmd, return task; } +int sas_queuecommand_internal(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) +{ + struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost); + struct sas_internal *i = to_sas_internal(ha->core.shost->transportt); + struct request *rq = scsi_cmd_to_rq(cmnd); + + if (ata_is_scmd_ata_internal(cmnd)) { + struct ata_queued_cmd *qc = (struct ata_queued_cmd *)cmnd->host_scribble; + struct ata_port *ap = qc->ap; + int res; + + spin_lock_irq(ap->lock); + res = ata_sas_queuecmd(cmnd, ap); + spin_unlock_irq(ap->lock); + return res; + } + + return i->dft->lldd_execute_task(sas_rq_to_task(rq), GFP_KERNEL); +} +EXPORT_SYMBOL_GPL(sas_queuecommand_internal); + int sas_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) { struct sas_internal *i = to_sas_internal(host->transportt); diff --git a/include/linux/libata.h b/include/linux/libata.h index 5fa6f56bba81..6cb7a5bcb308 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1238,6 +1238,7 @@ extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); extern void ata_tf_to_fis(const struct ata_taskfile *tf, u8 pmp, int is_cmd, u8 *fis); +extern bool ata_is_scmd_ata_internal(struct scsi_cmnd *scmd); extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active); extern bool sata_lpm_ignore_phy_events(struct ata_link *link); diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index ff04eb6d250b..261169ffdca6 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -725,6 +725,7 @@ int sas_discover_sata(struct domain_device *); int sas_discover_end_dev(struct domain_device *); void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *); +int sas_queuecommand_internal(struct Scsi_Host *shost, struct scsi_cmnd *cmnd); void sas_init_dev(struct domain_device *); @@ -756,4 +757,11 @@ void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event, void sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event, gfp_t gfp_flags); +static inline struct sas_task *sas_rq_to_task(struct request *rq) +{ + struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); + + return (struct sas_task *)(scmd + 1); +} + #endif /* _SASLIB_H_ */