From patchwork Fri Oct 20 19:06:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karan Tilak Kumar X-Patchwork-Id: 736528 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 31F9DC0032E for ; Fri, 20 Oct 2023 19:08:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230162AbjJTTIC (ORCPT ); Fri, 20 Oct 2023 15:08:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53412 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230190AbjJTTHV (ORCPT ); Fri, 20 Oct 2023 15:07:21 -0400 Received: from rcdn-iport-2.cisco.com (rcdn-iport-2.cisco.com [173.37.86.73]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1C3B6D6B; Fri, 20 Oct 2023 12:07:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=10379; q=dns/txt; s=iport; t=1697828839; x=1699038439; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=aT4ditRrYjCWvqrXVFbK+ZNBht4l64SOiW4neDulBpU=; b=Vn45NzACE0UID05XEAMnQiEMppL71HwAVeumkYG23QHmThEarh8UaacT ZKmhEMXmjCPM7UiPNSaVKOrtZVUh3N9N6v3cy30JXCgcX6cx/wMvspMkg /S9Ee8eYSPWv3++AKVf6YnNrFyediHNTw+lfj728Tix1Ti0NV2f8W1oSo 8=; X-CSE-ConnectionGUID: 6jusVPlCQBuh87WwFqxFGQ== X-CSE-MsgGUID: SNeyOtoCSkSNNFivPn+WsA== X-IronPort-AV: E=Sophos;i="6.03,239,1694736000"; d="scan'208";a="127269694" Received: from rcdn-core-11.cisco.com ([173.37.93.147]) by rcdn-iport-2.cisco.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2023 19:07:18 +0000 Received: from localhost.cisco.com ([10.193.101.253]) (authenticated bits=0) by rcdn-core-11.cisco.com (8.15.2/8.15.2) with ESMTPSA id 39KJ6XPM026372 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 20 Oct 2023 19:07:17 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 Subject: [PATCH 10/13] scsi: fnic: Add support for multiqueue (MQ) in fnic_main.c Date: Fri, 20 Oct 2023 12:06:26 -0700 Message-Id: <20231020190629.338623-11-kartilak@cisco.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20231020190629.338623-1-kartilak@cisco.com> References: <20231020190629.338623-1-kartilak@cisco.com> 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-11.cisco.com Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org 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. Reviewed-by: Sesidhar Baddela Reviewed-by: Arulprabhu Ponnusamy Signed-off-by: Karan Tilak Kumar --- drivers/scsi/fnic/fnic.h | 2 +- drivers/scsi/fnic/fnic_main.c | 137 ++++++++++++++++++++++++++-------- 2 files changed, 105 insertions(+), 34 deletions(-) diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h index 692175cfa557..182194b6d51d 100644 --- a/drivers/scsi/fnic/fnic.h +++ b/drivers/scsi/fnic/fnic.h @@ -377,7 +377,7 @@ 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 66e85754c1d6..5b60396e7349 100644 --- a/drivers/scsi/fnic/fnic_main.c +++ b/drivers/scsi/fnic/fnic_main.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -116,6 +117,7 @@ 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 @@ -392,7 +394,7 @@ 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->cpy_wq_base); break; default: shost_printk(KERN_ERR, fnic->lport->host, @@ -565,11 +567,6 @@ 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", @@ -582,15 +579,71 @@ static int fnic_scsi_drv_init(struct fnic *fnic) return 0; } +void fnic_mq_map_queues_cpus(struct Scsi_Host *host) +{ + const struct cpumask *mask; + unsigned int queue, cpu; + int irq_num; + struct fc_lport *lp = shost_priv(host); + struct fnic *fnic = lport_priv(lp); + struct pci_dev *l_pdev = fnic->pdev; + struct blk_mq_tag_set *set = &host->tag_set; + int intr_mode = fnic->config.intr_mode; + + if (intr_mode == VNIC_DEV_INTR_MODE_MSI || intr_mode == VNIC_DEV_INTR_MODE_INTX) { + shost_printk(KERN_ERR, fnic->lport->host, + "fnic<%d>: %s: %d: intr_mode is not msix\n", + fnic->fnic_num, __func__, __LINE__); + return; + } + + shost_printk(KERN_INFO, fnic->lport->host, + "fnic<%d>: %s: %d: set->nr_hw_queues: %d\n", + fnic->fnic_num, __func__, __LINE__, set->nr_hw_queues); + + for (queue = 0; queue < set->nr_hw_queues; queue++) { + if (l_pdev == NULL) { + shost_printk(KERN_ERR, fnic->lport->host, + "fnic<%d>: %s: %d: l_pdev is null\n", + fnic->fnic_num, __func__, __LINE__); + return; + } + + irq_num = pci_irq_vector(l_pdev, queue+2); + if (irq_num < 0) { + shost_printk(KERN_ERR, fnic->lport->host, + "fnic<%d>: %s: %d: irq_num less than zero: %d\n", + fnic->fnic_num, __func__, __LINE__, irq_num); + continue; + } + + mask = irq_get_effective_affinity_mask(irq_num); + if (!mask) { + shost_printk(KERN_ERR, fnic->lport->host, + "fnic<%d>: %s: %d: failed to get irq_affinity map for queue: %d\n", + fnic->fnic_num, __func__, __LINE__, irq_num); + continue; + } + + for_each_cpu(cpu, mask) { + set->map[HCTX_TYPE_DEFAULT].mq_map[cpu] = queue; + shost_printk(KERN_INFO, fnic->lport->host, + "fnic<%d>: %s: %d: cpu: %d <=> queue: %d\n", + fnic->fnic_num, __func__, __LINE__, cpu, irq_num); + } + } +} + static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct Scsi_Host *host; struct fc_lport *lp; struct fnic *fnic; mempool_t *pool; - int err; + int err = 0; int i; unsigned long flags; + int hwq; atomic_inc(&fnic_num); /* @@ -607,8 +660,8 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) fnic = lport_priv(lp); 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); @@ -617,11 +670,6 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) fnic->fnic_num = atomic_read(&fnic_num); 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, @@ -723,7 +771,8 @@ 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); @@ -743,6 +792,16 @@ 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); @@ -827,16 +886,32 @@ 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 @@ -845,9 +920,10 @@ 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; @@ -871,7 +947,7 @@ 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); @@ -899,21 +975,8 @@ 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++) @@ -925,12 +988,15 @@ 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]); @@ -939,6 +1005,8 @@ 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); @@ -965,6 +1033,7 @@ 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 @@ -1025,6 +1094,8 @@ 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);