From patchwork Thu Nov 30 02:33:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Karan Tilak Kumar (kartilak)" X-Patchwork-Id: 13473994 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=cisco.com header.i=@cisco.com header.b="G4KoGP5M" Received: from rcdn-iport-4.cisco.com (rcdn-iport-4.cisco.com [173.37.86.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CA194D7D; Wed, 29 Nov 2023 18:36:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=10271; q=dns/txt; s=iport; t=1701311774; x=1702521374; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=UYqpk+5Te3Of7WdQeb2x1BuiQlpqIfQK/u1dIBFYGRY=; b=G4KoGP5MxFk/gnWGmq75dGEOU1pp2+yyM+CtULm4Ff3xzQInHxvBiSfY MT4IJOv4sv5zk+om0bZC7qYANnjZnRvAhh9GkIpCNnoFQZv88lGXLYoRN Jx2xW7I0Z41v1VoNTim34kqVo1wbQ5sUIdcXv3CbtMniJb2LnfgUKiMda U=; X-CSE-ConnectionGUID: lD06uO88Tf2QHjnLOiRK/A== X-CSE-MsgGUID: 5AvtyRODTJGV/xTfgBIV3A== X-IronPort-AV: E=Sophos;i="6.04,237,1695686400"; d="scan'208";a="149343610" Received: from rcdn-core-9.cisco.com ([173.37.93.145]) by rcdn-iport-4.cisco.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Nov 2023 02:36:14 +0000 Received: from localhost.cisco.com ([10.193.101.253]) (authenticated bits=0) by rcdn-core-9.cisco.com (8.15.2/8.15.2) with ESMTPSA id 3AU2YA4C007614 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 30 Nov 2023 02:36:13 GMT From: Karan Tilak Kumar To: sebaddel@cisco.com Cc: arulponn@cisco.com, djhawar@cisco.com, gcboffa@cisco.com, mkai2@cisco.com, satishkh@cisco.com, jejb@linux.ibm.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Karan Tilak Kumar , Hannes Reinecke , John Garry Subject: [PATCH v4 10/13] scsi: fnic: Add support for multiqueue (MQ) in fnic_main.c Date: Wed, 29 Nov 2023 18:33:59 -0800 Message-Id: <20231130023402.802282-11-kartilak@cisco.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20231130023402.802282-1-kartilak@cisco.com> References: <20231130023402.802282-1-kartilak@cisco.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Authenticated-User: kartilak@cisco.com X-Outbound-SMTP-Client: 10.193.101.253, [10.193.101.253] X-Outbound-Node: rcdn-core-9.cisco.com Set map_queues in the fnic_host_template to fnic_mq_map_queues_cpus. Define fnic_mq_map_queues_cpus to set cpu assignment to fnic queues. Refactor code in fnic_probe to enable vnic queues before scsi_add_host. Modify notify set to the correct index. Changes between v2 and v3: Incorporate review comment from Hannes: Replace cpy_wq_base with copy_wq_base. Incorporate review comment from John Garry: Replace code in fnic_mq_map_queues_cpus with blk_mq_pci_map_queues. Replace shost_printk logs with FNIC_MAIN_DBG. Reviewed-by: Sesidhar Baddela Reviewed-by: Arulprabhu Ponnusamy Reviewed-by: Hannes Reinecke Reviewed-by: John Garry Signed-off-by: Karan Tilak Kumar --- drivers/scsi/fnic/fnic.h | 4 +- drivers/scsi/fnic/fnic_main.c | 107 ++++++++++++++++++++++++---------- 2 files changed, 77 insertions(+), 34 deletions(-) diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h index 97a2e547584a..5777a54c99c3 100644 --- a/drivers/scsi/fnic/fnic.h +++ b/drivers/scsi/fnic/fnic.h @@ -109,7 +109,7 @@ static inline u64 fnic_flags_and_state(struct scsi_cmnd *cmd) #define FNIC_ABT_TERM_DELAY_TIMEOUT 500 /* mSec */ #define FNIC_MAX_FCP_TARGET 256 - +#define FNIC_PCI_OFFSET 2 /** * state_flags to identify host state along along with fnic's state **/ @@ -384,7 +384,7 @@ void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq, int fnic_fw_reset_handler(struct fnic *fnic); void fnic_terminate_rport_io(struct fc_rport *); const char *fnic_state_to_str(unsigned int state); - +void fnic_mq_map_queues_cpus(struct Scsi_Host *host); void fnic_log_q_error(struct fnic *fnic); void fnic_handle_link_event(struct fnic *fnic); diff --git a/drivers/scsi/fnic/fnic_main.c b/drivers/scsi/fnic/fnic_main.c index 32ae4b32e5ba..4ce933d5c15f 100644 --- a/drivers/scsi/fnic/fnic_main.c +++ b/drivers/scsi/fnic/fnic_main.c @@ -12,9 +12,11 @@ #include #include #include +#include #include #include #include +#include #include #include #include @@ -114,6 +116,7 @@ static const struct scsi_host_template fnic_host_template = { .shost_groups = fnic_host_groups, .track_queue_depth = 1, .cmd_size = sizeof(struct fnic_cmd_priv), + .map_queues = fnic_mq_map_queues_cpus, }; static void @@ -390,7 +393,7 @@ static int fnic_notify_set(struct fnic *fnic) err = vnic_dev_notify_set(fnic->vdev, -1); break; case VNIC_DEV_INTR_MODE_MSIX: - err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY); + err = vnic_dev_notify_set(fnic->vdev, fnic->wq_copy_count + fnic->copy_wq_base); break; default: shost_printk(KERN_ERR, fnic->lport->host, @@ -563,11 +566,6 @@ static int fnic_scsi_drv_init(struct fnic *fnic) host->max_cmd_len = FCOE_MAX_CMD_LEN; host->nr_hw_queues = fnic->wq_copy_count; - if (host->nr_hw_queues > 1) - shost_printk(KERN_ERR, host, - "fnic: blk-mq is not supported"); - - host->nr_hw_queues = fnic->wq_copy_count = 1; shost_printk(KERN_INFO, host, "fnic: can_queue: %d max_lun: %llu", @@ -580,6 +578,32 @@ static int fnic_scsi_drv_init(struct fnic *fnic) return 0; } +void fnic_mq_map_queues_cpus(struct Scsi_Host *host) +{ + struct fc_lport *lp = shost_priv(host); + struct fnic *fnic = lport_priv(lp); + struct pci_dev *l_pdev = fnic->pdev; + int intr_mode = fnic->config.intr_mode; + struct blk_mq_queue_map *qmap = &host->tag_set.map[HCTX_TYPE_DEFAULT]; + + if (intr_mode == VNIC_DEV_INTR_MODE_MSI || intr_mode == VNIC_DEV_INTR_MODE_INTX) { + FNIC_MAIN_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num, + "intr_mode is not msix\n"); + return; + } + + FNIC_MAIN_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "qmap->nr_queues: %d\n", qmap->nr_queues); + + if (l_pdev == NULL) { + FNIC_MAIN_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num, + "l_pdev is null\n"); + return; + } + + blk_mq_pci_map_queues(qmap, l_pdev, FNIC_PCI_OFFSET); +} + static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct Scsi_Host *host; @@ -590,6 +614,7 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) int fnic_id = 0; int i; unsigned long flags; + int hwq; /* * Allocate SCSI Host and set up association between host, @@ -613,8 +638,8 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) } fnic->lport = lp; fnic->ctlr.lp = lp; - fnic->link_events = 0; + fnic->pdev = pdev; snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME, host->host_no); @@ -623,11 +648,6 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) fnic->fnic_num = fnic_id; fnic_stats_debugfs_init(fnic); - /* Setup PCI resources */ - pci_set_drvdata(pdev, fnic); - - fnic->pdev = pdev; - err = pci_enable_device(pdev); if (err) { shost_printk(KERN_ERR, fnic->lport->host, @@ -729,7 +749,8 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) goto err_out_dev_close; } - fnic_scsi_drv_init(fnic); + /* Setup PCI resources */ + pci_set_drvdata(pdev, fnic); fnic_get_res_counts(fnic); @@ -749,6 +770,16 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) goto err_out_clear_intr; } + fnic_scsi_drv_init(fnic); + + for (hwq = 0; hwq < fnic->wq_copy_count; hwq++) { + fnic->sw_copy_wq[hwq].ioreq_table_size = fnic->fnic_max_tag_id; + fnic->sw_copy_wq[hwq].io_req_table = + kzalloc((fnic->sw_copy_wq[hwq].ioreq_table_size + 1) * + sizeof(struct fnic_io_req *), GFP_KERNEL); + } + shost_printk(KERN_INFO, fnic->lport->host, "fnic copy wqs: %d, Q0 ioreq table size: %d\n", + fnic->wq_copy_count, fnic->sw_copy_wq[0].ioreq_table_size); /* initialize all fnic locks */ spin_lock_init(&fnic->fnic_lock); @@ -833,16 +864,32 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) /* allocate RQ buffers and post them to RQ*/ for (i = 0; i < fnic->rq_count; i++) { - vnic_rq_enable(&fnic->rq[i]); err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); if (err) { shost_printk(KERN_ERR, fnic->lport->host, "fnic_alloc_rq_frame can't alloc " "frame\n"); - goto err_out_free_rq_buf; + goto err_out_rq_buf; } } + /* Enable all queues */ + for (i = 0; i < fnic->raw_wq_count; i++) + vnic_wq_enable(&fnic->wq[i]); + for (i = 0; i < fnic->rq_count; i++) { + if (!ioread32(&fnic->rq[i].ctrl->enable)) + vnic_rq_enable(&fnic->rq[i]); + } + for (i = 0; i < fnic->wq_copy_count; i++) + vnic_wq_copy_enable(&fnic->hw_copy_wq[i]); + + err = fnic_request_intr(fnic); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Unable to request irq.\n"); + goto err_out_request_intr; + } + /* * Initialization done with PCI system, hardware, firmware. * Add host to SCSI @@ -851,9 +898,10 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (err) { shost_printk(KERN_ERR, fnic->lport->host, "fnic: scsi_add_host failed...exiting\n"); - goto err_out_free_rq_buf; + goto err_out_scsi_add_host; } + /* Start local port initiatialization */ lp->link_up = 0; @@ -877,7 +925,7 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START, FCPIO_HOST_EXCH_RANGE_END, NULL)) { err = -ENOMEM; - goto err_out_remove_scsi_host; + goto err_out_fc_exch_mgr_alloc; } fc_lport_init_stats(lp); @@ -905,21 +953,8 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) skb_queue_head_init(&fnic->frame_queue); skb_queue_head_init(&fnic->tx_queue); - /* Enable all queues */ - for (i = 0; i < fnic->raw_wq_count; i++) - vnic_wq_enable(&fnic->wq[i]); - for (i = 0; i < fnic->wq_copy_count; i++) - vnic_wq_copy_enable(&fnic->hw_copy_wq[i]); - fc_fabric_login(lp); - err = fnic_request_intr(fnic); - if (err) { - shost_printk(KERN_ERR, fnic->lport->host, - "Unable to request irq.\n"); - goto err_out_free_exch_mgr; - } - vnic_dev_enable(fnic->vdev); for (i = 0; i < fnic->intr_count; i++) @@ -931,12 +966,15 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) err_out_free_exch_mgr: fc_exch_mgr_free(lp); -err_out_remove_scsi_host: +err_out_fc_exch_mgr_alloc: fc_remove_host(lp->host); scsi_remove_host(lp->host); -err_out_free_rq_buf: +err_out_scsi_add_host: + fnic_free_intr(fnic); +err_out_request_intr: for (i = 0; i < fnic->rq_count; i++) vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); +err_out_rq_buf: vnic_dev_notify_unset(fnic->vdev); err_out_free_max_pool: mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]); @@ -945,6 +983,8 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) err_out_free_ioreq_pool: mempool_destroy(fnic->io_req_pool); err_out_free_resources: + for (hwq = 0; hwq < fnic->wq_copy_count; hwq++) + kfree(fnic->sw_copy_wq[hwq].io_req_table); fnic_free_vnic_resources(fnic); err_out_clear_intr: fnic_clear_intr_mode(fnic); @@ -973,6 +1013,7 @@ static void fnic_remove(struct pci_dev *pdev) struct fnic *fnic = pci_get_drvdata(pdev); struct fc_lport *lp = fnic->lport; unsigned long flags; + int hwq; /* * Mark state so that the workqueue thread stops forwarding @@ -1033,6 +1074,8 @@ static void fnic_remove(struct pci_dev *pdev) fc_remove_host(fnic->lport->host); scsi_remove_host(fnic->lport->host); + for (hwq = 0; hwq < fnic->wq_copy_count; hwq++) + kfree(fnic->sw_copy_wq[hwq].io_req_table); fc_exch_mgr_free(fnic->lport); vnic_dev_notify_unset(fnic->vdev); fnic_free_intr(fnic);