From patchwork Wed Dec 6 18:46:08 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: 13482160 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=cisco.com header.i=@cisco.com header.b="BkN0Evff" Received: from rcdn-iport-5.cisco.com (rcdn-iport-5.cisco.com [173.37.86.76]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 73C32D59; Wed, 6 Dec 2023 10:46:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3327; q=dns/txt; s=iport; t=1701888411; x=1703098011; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=mMh+WNlCdtd3lCTwGeXXwQz4B4E1AJ+tU8QHShz8zGE=; b=BkN0EvffQzec6RjQGlpRG+42BKfX6ZyzgBoRBBTB3T7if0omUm5e6aRx WBT17pPXlDrFBXi10WrKGze0rJZluvs58GdaqDn9c+abpjm+K4uzBgXyb 4ae9bXpNMeBEWwqgEH2YqkVVZXHAQNvf3zK1FcSBgWUYnfsO+Uya9RpEY s=; X-CSE-ConnectionGUID: abVJPVZpRyeW6DKlGoAGkw== X-CSE-MsgGUID: w+trfc3xQI++hcKheDSeiA== X-IronPort-AV: E=Sophos;i="6.04,256,1695686400"; d="scan'208";a="155557849" Received: from alln-core-4.cisco.com ([173.36.13.137]) by rcdn-iport-5.cisco.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Dec 2023 18:46:50 +0000 Received: from localhost.cisco.com ([10.193.101.253]) (authenticated bits=0) by alln-core-4.cisco.com (8.15.2/8.15.2) with ESMTPSA id 3B6IkHD2010013 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 6 Dec 2023 18:46:49 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 v5 06/13] scsi: fnic: Refactor and redefine fnic.h for multiqueue Date: Wed, 6 Dec 2023 10:46:08 -0800 Message-Id: <20231206184615.878755-7-kartilak@cisco.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20231206184615.878755-1-kartilak@cisco.com> References: <20231206184615.878755-1-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: alln-core-4.cisco.com Refactor and re-define values in fnic.h to implement multiqueue(MQ) functionality. VIC firmware allows fnic to create up to 64 copy workqueues. Update the copy workqueue max to 64. Modify the interrupt index to be in sync with the firmware to support MQ. Add irq number to the MSIX entry. Define a software workqueue table to track the status of io_reqs. Define a base for the copy workqueue. Reviewed-by: Sesidhar Baddela Reviewed-by: Arulprabhu Ponnusamy Signed-off-by: Karan Tilak Kumar --- Changes between v4 and v5: Incorporate review comments from Martin: Modify patch commits to include a "---" separator. Changes between v2 and v3: Replace cpy_wq_base with copy_wq_base. --- drivers/scsi/fnic/fnic.h | 30 ++++++++++++++++++++++-------- 1 file changed, 22 insertions(+), 8 deletions(-) diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h index f4bd0e13203d..07d67fe903f2 100644 --- a/drivers/scsi/fnic/fnic.h +++ b/drivers/scsi/fnic/fnic.h @@ -167,12 +167,21 @@ do { \ #define FNIC_MAIN_NOTE(kern_level, host, fmt, args...) \ shost_printk(kern_level, host, fmt, ##args) +#define FNIC_WQ_COPY_MAX 64 +#define FNIC_WQ_MAX 1 +#define FNIC_RQ_MAX 1 +#define FNIC_CQ_MAX (FNIC_WQ_COPY_MAX + FNIC_WQ_MAX + FNIC_RQ_MAX) +#define FNIC_DFLT_IO_COMPLETIONS 256 + +#define FNIC_MQ_CQ_INDEX 2 + extern const char *fnic_state_str[]; enum fnic_intx_intr_index { FNIC_INTX_WQ_RQ_COPYWQ, - FNIC_INTX_ERR, + FNIC_INTX_DUMMY, FNIC_INTX_NOTIFY, + FNIC_INTX_ERR, FNIC_INTX_INTR_MAX, }; @@ -180,7 +189,7 @@ enum fnic_msix_intr_index { FNIC_MSIX_RQ, FNIC_MSIX_WQ, FNIC_MSIX_WQ_COPY, - FNIC_MSIX_ERR_NOTIFY, + FNIC_MSIX_ERR_NOTIFY = FNIC_MSIX_WQ_COPY + FNIC_WQ_COPY_MAX, FNIC_MSIX_INTR_MAX, }; @@ -189,6 +198,7 @@ struct fnic_msix_entry { char devname[IFNAMSIZ + 11]; irqreturn_t (*isr)(int, void *); void *devid; + int irq_num; }; enum fnic_state { @@ -198,12 +208,6 @@ enum fnic_state { FNIC_IN_ETH_TRANS_FC_MODE, }; -#define FNIC_WQ_COPY_MAX 1 -#define FNIC_WQ_MAX 1 -#define FNIC_RQ_MAX 1 -#define FNIC_CQ_MAX (FNIC_WQ_COPY_MAX + FNIC_WQ_MAX + FNIC_RQ_MAX) -#define FNIC_DFLT_IO_COMPLETIONS 256 - struct mempool; enum fnic_evt { @@ -218,6 +222,13 @@ struct fnic_event { enum fnic_evt event; }; +struct fnic_cpy_wq { + unsigned long hw_lock_flags; + u16 active_ioreq_count; + u16 ioreq_table_size; + ____cacheline_aligned struct fnic_io_req **io_req_table; +}; + /* Per-instance private data structure */ struct fnic { int fnic_num; @@ -287,6 +298,7 @@ struct fnic { mempool_t *io_sgl_pool[FNIC_SGL_NUM_CACHES]; spinlock_t io_req_lock[FNIC_IO_LOCKS]; /* locks for scsi cmnds */ + unsigned int copy_wq_base; struct work_struct link_work; struct work_struct frame_work; struct sk_buff_head frame_queue; @@ -306,6 +318,8 @@ struct fnic { /* copy work queue cache line section */ ____cacheline_aligned struct vnic_wq_copy hw_copy_wq[FNIC_WQ_COPY_MAX]; + ____cacheline_aligned struct fnic_cpy_wq sw_copy_wq[FNIC_WQ_COPY_MAX]; + /* completion queue cache line section */ ____cacheline_aligned struct vnic_cq cq[FNIC_CQ_MAX];