From patchwork Mon Feb 22 13:23:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386506 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A3DDAC433E9 for ; Mon, 22 Feb 2021 13:28:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5BE1D64E5C for ; Mon, 22 Feb 2021 13:28:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231712AbhBVN1s (ORCPT ); Mon, 22 Feb 2021 08:27:48 -0500 Received: from mx2.suse.de ([195.135.220.15]:45146 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231628AbhBVNY6 (ORCPT ); Mon, 22 Feb 2021 08:24:58 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 73D53AF3E; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 01/31] block: add flag for internal commands Date: Mon, 22 Feb 2021 14:23:35 +0100 Message-Id: <20210222132405.91369-2-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Some drivers require to allocate requests for internal command submission. These request will never be passed through the block layer, but nevertheless require a valid tag to avoid them clashing with normal I/O commands. This patch adds a new request flag REQ_INTERNAL to mark such requests and a terminates any such commands in blk_execute_rq_nowait() with a WARN_ON_ONCE to signal such an invalid usage. Signed-off-by: Hannes Reinecke --- block/blk-exec.c | 5 +++++ include/linux/blk_types.h | 2 ++ include/linux/blkdev.h | 5 +++++ 3 files changed, 12 insertions(+) diff --git a/block/blk-exec.c b/block/blk-exec.c index 85324d53d072..6869877e0d21 100644 --- a/block/blk-exec.c +++ b/block/blk-exec.c @@ -55,6 +55,11 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk, rq->rq_disk = bd_disk; rq->end_io = done; + if (WARN_ON_ONCE(blk_rq_is_internal(rq))) { + blk_mq_end_request(rq, BLK_STS_NOTSUPP); + return; + } + blk_account_io_start(rq); /* diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 866f74261b3b..27e248335ad5 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -424,6 +424,7 @@ enum req_flag_bits { /* for driver use */ __REQ_DRV, __REQ_SWAP, /* swapping request. */ + __REQ_INTERNAL, /* driver-internal command */ __REQ_NR_BITS, /* stops here */ }; @@ -448,6 +449,7 @@ enum req_flag_bits { #define REQ_DRV (1ULL << __REQ_DRV) #define REQ_SWAP (1ULL << __REQ_SWAP) +#define REQ_INTERNAL (1ULL << __REQ_INTERNAL) #define REQ_FAILFAST_MASK \ (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f94ee3089e01..5e1e2a549c37 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -269,6 +269,11 @@ static inline bool blk_rq_is_passthrough(struct request *rq) return blk_rq_is_scsi(rq) || blk_rq_is_private(rq); } +static inline bool blk_rq_is_internal(struct request *rq) +{ + return rq->cmd_flags & REQ_INTERNAL; +} + static inline bool bio_is_passthrough(struct bio *bio) { unsigned op = bio_op(bio); From patchwork Mon Feb 22 13:23:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386508 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 50987C433E6 for ; Mon, 22 Feb 2021 13:27:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F3D9964E27 for ; Mon, 22 Feb 2021 13:27:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229995AbhBVN1J (ORCPT ); Mon, 22 Feb 2021 08:27:09 -0500 Received: from mx2.suse.de ([195.135.220.15]:45210 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231712AbhBVNY5 (ORCPT ); Mon, 22 Feb 2021 08:24:57 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 75C93AF49; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 02/31] scsi: add scsi_{get,put}_internal_cmd() helper Date: Mon, 22 Feb 2021 14:23:36 +0100 Message-Id: <20210222132405.91369-3-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Add helper functions to allow LLDDs to allocate and free internal commands. Signed-off-by: Hannes Reinecke --- drivers/scsi/scsi_lib.c | 45 ++++++++++++++++++++++++++++++++++++++ include/scsi/scsi_device.h | 4 ++++ 2 files changed, 49 insertions(+) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index d0ae586565f8..5cb464972682 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1934,6 +1934,51 @@ void scsi_mq_destroy_tags(struct Scsi_Host *shost) blk_mq_free_tag_set(&shost->tag_set); } +/** + * scsi_get_internal_cmd - allocate an internal SCSI command + * @sdev: SCSI device from which to allocate the command + * @data_direction: Data direction for the allocated command + * @op_flags: request allocation flags + * + * Allocates a SCSI command for internal LLDD use. + */ +struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, + enum dma_data_direction data_direction, int op_flags) +{ + struct request *rq; + struct scsi_cmnd *scmd; + blk_mq_req_flags_t flags = 0; + unsigned int op = REQ_INTERNAL | op_flags; + + op |= (data_direction == DMA_TO_DEVICE) ? + REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN; + rq = blk_mq_alloc_request(sdev->request_queue, op, flags); + if (IS_ERR(rq)) + return NULL; + scmd = blk_mq_rq_to_pdu(rq); + scmd->request = rq; + scmd->device = sdev; + return scmd; +} +EXPORT_SYMBOL_GPL(scsi_get_internal_cmd); + +/** + * scsi_put_internal_cmd - free an internal SCSI command + * @scmd: SCSI command to be freed + * + * Check if @scmd is an internal command, and call + * blk_mq_free_request() if true. + */ +void scsi_put_internal_cmd(struct scsi_cmnd *scmd) +{ + struct request *rq = blk_mq_rq_from_pdu(scmd); + + if (WARN_ON(!blk_rq_is_internal(rq))) + return; + blk_mq_free_request(rq); +} +EXPORT_SYMBOL_GPL(scsi_put_internal_cmd); + /** * scsi_device_from_queue - return sdev associated with a request_queue * @q: The request queue to return the sdev from diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index 1a5c9a3df6d6..d915728cc3c2 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -8,6 +8,7 @@ #include #include #include +#include struct device; struct request_queue; @@ -461,6 +462,9 @@ static inline int scsi_execute_req(struct scsi_device *sdev, return scsi_execute(sdev, cmd, data_direction, buffer, bufflen, NULL, sshdr, timeout, retries, 0, 0, resid); } +struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, + enum dma_data_direction data_direction, int op_flags); +void scsi_put_internal_cmd(struct scsi_cmnd *scmd); extern void sdev_disable_disk_events(struct scsi_device *sdev); extern void sdev_enable_disk_events(struct scsi_device *sdev); extern int scsi_vpd_lun_id(struct scsi_device *, char *, size_t); From patchwork Mon Feb 22 13:23:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386032 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9908C433DB for ; Mon, 22 Feb 2021 13:28:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 634C764E5C for ; Mon, 22 Feb 2021 13:28:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231598AbhBVN1q (ORCPT ); Mon, 22 Feb 2021 08:27:46 -0500 Received: from mx2.suse.de ([195.135.220.15]:45166 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231676AbhBVNY5 (ORCPT ); Mon, 22 Feb 2021 08:24:57 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 7A1D2AF4F; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 03/31] fnic: use internal commands Date: Mon, 22 Feb 2021 14:23:37 +0100 Message-Id: <20210222132405.91369-4-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Remove hack to get tag for the reset command by using internal commands. Signed-off-by: Hannes Reinecke --- drivers/scsi/fnic/fnic_scsi.c | 149 ++++++++++++---------------------- 1 file changed, 50 insertions(+), 99 deletions(-) diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c index 36744968378f..d851e75b0074 100644 --- a/drivers/scsi/fnic/fnic_scsi.c +++ b/drivers/scsi/fnic/fnic_scsi.c @@ -102,7 +102,7 @@ static const char *fnic_fcpio_status_to_str(unsigned int status) return fcpio_status_str[status]; } -static void fnic_cleanup_io(struct fnic *fnic, int exclude_id); +static void fnic_cleanup_io(struct fnic *fnic); static inline spinlock_t *fnic_io_lock_hash(struct fnic *fnic, struct scsi_cmnd *sc) @@ -638,7 +638,7 @@ static int fnic_fcpio_fw_reset_cmpl_handler(struct fnic *fnic, atomic64_inc(&reset_stats->fw_reset_completions); /* Clean up all outstanding io requests */ - fnic_cleanup_io(fnic, SCSI_NO_TAG); + fnic_cleanup_io(fnic); atomic64_set(&fnic->fnic_stats.fw_stats.active_fw_reqs, 0); atomic64_set(&fnic->fnic_stats.io_stats.active_ios, 0); @@ -1361,7 +1361,7 @@ int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int copy_work_to_do) return wq_work_done; } -static void fnic_cleanup_io(struct fnic *fnic, int exclude_id) +static void fnic_cleanup_io(struct fnic *fnic) { int i; struct fnic_io_req *io_req; @@ -1372,9 +1372,6 @@ static void fnic_cleanup_io(struct fnic *fnic, int exclude_id) struct fnic_stats *fnic_stats = &fnic->fnic_stats; for (i = 0; i < fnic->fnic_max_tag_id; i++) { - if (i == exclude_id) - continue; - io_lock = fnic_io_lock_tag(fnic, i); spin_lock_irqsave(io_lock, flags); sc = scsi_host_find_tag(fnic->lport->host, i); @@ -2125,9 +2122,7 @@ static inline int fnic_queue_dr_io_req(struct fnic *fnic, * successfully aborted, 1 otherwise */ static int fnic_clean_pending_aborts(struct fnic *fnic, - struct scsi_cmnd *lr_sc, - bool new_sc) - + struct scsi_cmnd *lr_sc) { int tag, abt_tag; struct fnic_io_req *io_req; @@ -2148,7 +2143,7 @@ static int fnic_clean_pending_aborts(struct fnic *fnic, * ignore this lun reset cmd if issued using new SC * or cmds that do not belong to this lun */ - if (!sc || ((sc == lr_sc) && new_sc) || sc->device != lun_dev) { + if (!sc || sc == lr_sc || sc->device != lun_dev) { spin_unlock_irqrestore(io_lock, flags); continue; } @@ -2287,38 +2282,6 @@ static int fnic_clean_pending_aborts(struct fnic *fnic, return ret; } -/** - * fnic_scsi_host_start_tag - * Allocates tagid from host's tag list - **/ -static inline int -fnic_scsi_host_start_tag(struct fnic *fnic, struct scsi_cmnd *sc) -{ - struct request_queue *q = sc->request->q; - struct request *dummy; - - dummy = blk_mq_alloc_request(q, REQ_OP_WRITE, BLK_MQ_REQ_NOWAIT); - if (IS_ERR(dummy)) - return SCSI_NO_TAG; - - sc->tag = sc->request->tag = dummy->tag; - sc->host_scribble = (unsigned char *)dummy; - - return dummy->tag; -} - -/** - * fnic_scsi_host_end_tag - * frees tag allocated by fnic_scsi_host_start_tag. - **/ -static inline void -fnic_scsi_host_end_tag(struct fnic *fnic, struct scsi_cmnd *sc) -{ - struct request *dummy = (struct request *)sc->host_scribble; - - blk_mq_free_request(dummy); -} - /* * SCSI Eh thread issues a Lun Reset when one or more commands on a LUN * fail to get aborted. It calls driver's eh_device_reset with a SCSI command @@ -2335,19 +2298,19 @@ int fnic_device_reset(struct scsi_cmnd *sc) spinlock_t *io_lock; unsigned long flags; unsigned long start_time = 0; + struct scsi_device *sdev = sc->device; struct scsi_lun fc_lun; struct fnic_stats *fnic_stats; struct reset_stats *reset_stats; int tag = 0; DECLARE_COMPLETION_ONSTACK(tm_done); - int tag_gen_flag = 0; /*to track tags allocated by fnic driver*/ - bool new_sc = 0; + struct scsi_cmnd *reset_sc = NULL; /* Wait for rport to unblock */ fc_block_scsi_eh(sc); /* Get local-port, check ready and link up */ - lp = shost_priv(sc->device->host); + lp = shost_priv(sdev->host); fnic = lport_priv(lp); fnic_stats = &fnic->fnic_stats; @@ -2355,10 +2318,10 @@ int fnic_device_reset(struct scsi_cmnd *sc) atomic64_inc(&reset_stats->device_resets); - rport = starget_to_rport(scsi_target(sc->device)); + rport = starget_to_rport(scsi_target(sdev)); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "Device reset called FCID 0x%x, LUN 0x%llx sc 0x%p\n", - rport->port_id, sc->device->lun, sc); + rport->port_id, sdev->lun, sc); if (lp->state != LPORT_ST_READY || !(lp->link_up)) goto fnic_device_reset_end; @@ -2369,42 +2332,30 @@ int fnic_device_reset(struct scsi_cmnd *sc) goto fnic_device_reset_end; } - CMD_FLAGS(sc) = FNIC_DEVICE_RESET; - /* Allocate tag if not present */ + reset_sc = scsi_get_internal_cmd(sdev, DMA_NONE, REQ_NOWAIT); + if (unlikely(!reset_sc)) + goto fnic_device_reset_end; - tag = sc->request->tag; - if (unlikely(tag < 0)) { - /* - * Really should fix the midlayer to pass in a proper - * request for ioctls... - */ - tag = fnic_scsi_host_start_tag(fnic, sc); - if (unlikely(tag == SCSI_NO_TAG)) - goto fnic_device_reset_end; - tag_gen_flag = 1; - new_sc = 1; - } - io_lock = fnic_io_lock_hash(fnic, sc); + CMD_FLAGS(reset_sc) = FNIC_DEVICE_RESET; + tag = reset_sc->request->tag; + io_lock = fnic_io_lock_hash(fnic, reset_sc); spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); /* - * If there is a io_req attached to this command, then use it, - * else allocate a new one. + * Allocate a new io_req. */ + io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); if (!io_req) { - io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); - if (!io_req) { - spin_unlock_irqrestore(io_lock, flags); - goto fnic_device_reset_end; - } - memset(io_req, 0, sizeof(*io_req)); - io_req->port_id = rport->port_id; - CMD_SP(sc) = (char *)io_req; + spin_unlock_irqrestore(io_lock, flags); + goto fnic_device_reset_end; } + memset(io_req, 0, sizeof(*io_req)); + io_req->port_id = rport->port_id; + CMD_SP(reset_sc) = (char *)io_req; + io_req->dr_done = &tm_done; - CMD_STATE(sc) = FNIC_IOREQ_CMD_PENDING; - CMD_LR_STATUS(sc) = FCPIO_INVALID_CODE; + CMD_STATE(reset_sc) = FNIC_IOREQ_CMD_PENDING; + CMD_LR_STATUS(reset_sc) = FCPIO_INVALID_CODE; spin_unlock_irqrestore(io_lock, flags); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "TAG %x\n", tag); @@ -2413,15 +2364,15 @@ int fnic_device_reset(struct scsi_cmnd *sc) * issue the device reset, if enqueue failed, clean up the ioreq * and break assoc with scsi cmd */ - if (fnic_queue_dr_io_req(fnic, sc, io_req)) { + if (fnic_queue_dr_io_req(fnic, reset_sc, io_req)) { spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(reset_sc); if (io_req) io_req->dr_done = NULL; goto fnic_device_reset_clean; } spin_lock_irqsave(io_lock, flags); - CMD_FLAGS(sc) |= FNIC_DEV_RST_ISSUED; + CMD_FLAGS(reset_sc) |= FNIC_DEV_RST_ISSUED; spin_unlock_irqrestore(io_lock, flags); /* @@ -2432,16 +2383,16 @@ int fnic_device_reset(struct scsi_cmnd *sc) msecs_to_jiffies(FNIC_LUN_RESET_TIMEOUT)); spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(reset_sc); if (!io_req) { spin_unlock_irqrestore(io_lock, flags); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "io_req is null tag 0x%x sc 0x%p\n", tag, sc); + "io_req is null tag 0x%x sc 0x%p\n", tag, reset_sc); goto fnic_device_reset_end; } io_req->dr_done = NULL; - status = CMD_LR_STATUS(sc); + status = CMD_LR_STATUS(reset_sc); /* * If lun reset not completed, bail out with failed. io_req @@ -2451,16 +2402,16 @@ int fnic_device_reset(struct scsi_cmnd *sc) atomic64_inc(&reset_stats->device_reset_timeouts); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "Device reset timed out\n"); - CMD_FLAGS(sc) |= FNIC_DEV_RST_TIMED_OUT; + CMD_FLAGS(reset_sc) |= FNIC_DEV_RST_TIMED_OUT; spin_unlock_irqrestore(io_lock, flags); - int_to_scsilun(sc->device->lun, &fc_lun); + int_to_scsilun(sdev->lun, &fc_lun); /* * Issue abort and terminate on device reset request. * If q'ing of terminate fails, retry it after a delay. */ while (1) { spin_lock_irqsave(io_lock, flags); - if (CMD_FLAGS(sc) & FNIC_DEV_RST_TERM_ISSUED) { + if (CMD_FLAGS(reset_sc) & FNIC_DEV_RST_TERM_ISSUED) { spin_unlock_irqrestore(io_lock, flags); break; } @@ -2473,13 +2424,13 @@ int fnic_device_reset(struct scsi_cmnd *sc) msecs_to_jiffies(FNIC_ABT_TERM_DELAY_TIMEOUT)); } else { spin_lock_irqsave(io_lock, flags); - CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; - CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; + CMD_FLAGS(reset_sc) |= FNIC_DEV_RST_TERM_ISSUED; + CMD_STATE(reset_sc) = FNIC_IOREQ_ABTS_PENDING; io_req->abts_done = &tm_done; spin_unlock_irqrestore(io_lock, flags); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "Abort and terminate issued on Device reset " - "tag 0x%x sc 0x%p\n", tag, sc); + "tag 0x%x sc 0x%p\n", tag, reset_sc); break; } } @@ -2491,7 +2442,7 @@ int fnic_device_reset(struct scsi_cmnd *sc) msecs_to_jiffies(FNIC_LUN_RESET_TIMEOUT)); break; } else { - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(reset_sc); io_req->abts_done = NULL; goto fnic_device_reset_clean; } @@ -2506,7 +2457,7 @@ int fnic_device_reset(struct scsi_cmnd *sc) FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "Device reset completed - failed\n"); - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(reset_sc); goto fnic_device_reset_clean; } @@ -2517,7 +2468,7 @@ int fnic_device_reset(struct scsi_cmnd *sc) * the lun reset cmd. If all cmds get cleaned, the lun reset * succeeds */ - if (fnic_clean_pending_aborts(fnic, sc, new_sc)) { + if (fnic_clean_pending_aborts(fnic, reset_sc)) { spin_lock_irqsave(io_lock, flags); io_req = (struct fnic_io_req *)CMD_SP(sc); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, @@ -2528,35 +2479,35 @@ int fnic_device_reset(struct scsi_cmnd *sc) /* Clean lun reset command */ spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(reset_sc); if (io_req) /* Completed, and successful */ ret = SUCCESS; fnic_device_reset_clean: if (io_req) - CMD_SP(sc) = NULL; + CMD_SP(reset_sc) = NULL; spin_unlock_irqrestore(io_lock, flags); if (io_req) { start_time = io_req->start_time; - fnic_release_ioreq_buf(fnic, io_req, sc); + fnic_release_ioreq_buf(fnic, io_req, reset_sc); mempool_free(io_req, fnic->io_req_pool); } fnic_device_reset_end: - FNIC_TRACE(fnic_device_reset, sc->device->host->host_no, - sc->request->tag, sc, + FNIC_TRACE(fnic_device_reset, sdev->host->host_no, + reset_sc->request->tag, reset_sc, jiffies_to_msecs(jiffies - start_time), - 0, ((u64)sc->cmnd[0] << 32 | + 0, ((u64)reset_sc->cmnd[0] << 32 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); - /* free tag if it is allocated */ - if (unlikely(tag_gen_flag)) - fnic_scsi_host_end_tag(fnic, sc); + /* free internal command if it is allocated */ + if (reset_sc) + scsi_put_internal_cmd(reset_sc); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "Returning from device reset %s\n", From patchwork Mon Feb 22 13:23:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386028 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6BEB9C433DB for ; Mon, 22 Feb 2021 13:29:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 14C5164E12 for ; Mon, 22 Feb 2021 13:29:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231308AbhBVN3d (ORCPT ); Mon, 22 Feb 2021 08:29:33 -0500 Received: from mx2.suse.de ([195.135.220.15]:47788 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231511AbhBVN1l (ORCPT ); Mon, 22 Feb 2021 08:27:41 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 93869AF62; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 04/31] fnic: use scsi_host_busy_iter() to traverse commands Date: Mon, 22 Feb 2021 14:23:38 +0100 Message-Id: <20210222132405.91369-5-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Use scsi_host_busy_iter() to traverse commands instead of hand-crafted routines walking the command list. Signed-off-by: Hannes Reinecke --- drivers/scsi/fnic/fnic_scsi.c | 801 +++++++++++++++------------------- 1 file changed, 357 insertions(+), 444 deletions(-) diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c index d851e75b0074..c7f37afa3069 100644 --- a/drivers/scsi/fnic/fnic_scsi.c +++ b/drivers/scsi/fnic/fnic_scsi.c @@ -1361,90 +1361,90 @@ int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int copy_work_to_do) return wq_work_done; } -static void fnic_cleanup_io(struct fnic *fnic) +static bool fnic_cleanup_io_iter(struct scsi_cmnd *sc, void *data, + bool reserved) { - int i; + struct fnic *fnic = data; struct fnic_io_req *io_req; unsigned long flags = 0; - struct scsi_cmnd *sc; spinlock_t *io_lock; unsigned long start_time = 0; struct fnic_stats *fnic_stats = &fnic->fnic_stats; - for (i = 0; i < fnic->fnic_max_tag_id; i++) { - io_lock = fnic_io_lock_tag(fnic, i); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(fnic->lport->host, i); - if (!sc) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - io_req = (struct fnic_io_req *)CMD_SP(sc); - if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && - !(CMD_FLAGS(sc) & FNIC_DEV_RST_DONE)) { - /* - * We will be here only when FW completes reset - * without sending completions for outstanding ios. - */ - CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; - if (io_req && io_req->dr_done) - complete(io_req->dr_done); - else if (io_req && io_req->abts_done) - complete(io_req->abts_done); - spin_unlock_irqrestore(io_lock, flags); - continue; - } else if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - if (!io_req) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - CMD_SP(sc) = NULL; - - spin_unlock_irqrestore(io_lock, flags); + io_lock = fnic_io_lock_tag(fnic, sc->request->tag); + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && + !(CMD_FLAGS(sc) & FNIC_DEV_RST_DONE)) { /* - * If there is a scsi_cmnd associated with this io_req, then - * free the corresponding state + * We will be here only when FW completes reset + * without sending completions for outstanding ios. */ - start_time = io_req->start_time; - fnic_release_ioreq_buf(fnic, io_req, sc); - mempool_free(io_req, fnic->io_req_pool); + CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; + if (io_req && io_req->dr_done) + complete(io_req->dr_done); + else if (io_req && io_req->abts_done) + complete(io_req->abts_done); + spin_unlock_irqrestore(io_lock, flags); + return true; + } else if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + goto cleanup_scsi_cmd; + } - sc->result = DID_TRANSPORT_DISRUPTED << 16; - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "%s: tag:0x%x : sc:0x%p duration = %lu DID_TRANSPORT_DISRUPTED\n", - __func__, sc->request->tag, sc, - (jiffies - start_time)); + CMD_SP(sc) = NULL; - if (atomic64_read(&fnic->io_cmpl_skip)) - atomic64_dec(&fnic->io_cmpl_skip); - else - atomic64_inc(&fnic_stats->io_stats.io_completions); + spin_unlock_irqrestore(io_lock, flags); - /* Complete the command to SCSI */ - if (sc->scsi_done) { - if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) - shost_printk(KERN_ERR, fnic->lport->host, - "Calling done for IO not issued to fw: tag:0x%x sc:0x%p\n", - sc->request->tag, sc); + /* + * If there is a scsi_cmnd associated with this io_req, then + * free the corresponding state + */ + start_time = io_req->start_time; + fnic_release_ioreq_buf(fnic, io_req, sc); + mempool_free(io_req, fnic->io_req_pool); - FNIC_TRACE(fnic_cleanup_io, - sc->device->host->host_no, i, sc, - jiffies_to_msecs(jiffies - start_time), - 0, ((u64)sc->cmnd[0] << 32 | - (u64)sc->cmnd[2] << 24 | - (u64)sc->cmnd[3] << 16 | - (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), - (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); +cleanup_scsi_cmd: + sc->result = DID_TRANSPORT_DISRUPTED << 16; + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "fnic_cleanup_io: tag:0x%x : sc:0x%p duration = %lu DID_TRANSPORT_DISRUPTED\n", + sc->request->tag, sc, (jiffies - start_time)); - sc->scsi_done(sc); - } + if (atomic64_read(&fnic->io_cmpl_skip)) + atomic64_dec(&fnic->io_cmpl_skip); + else + atomic64_inc(&fnic_stats->io_stats.io_completions); + + /* Complete the command to SCSI */ + if (sc->scsi_done) { + if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) + shost_printk(KERN_ERR, fnic->lport->host, + "Calling done for IO not issued to fw: tag:0x%x sc:0x%p\n", + sc->request->tag, sc); + + FNIC_TRACE(fnic_cleanup_io, + sc->device->host->host_no, sc->request->tag, sc, + jiffies_to_msecs(jiffies - start_time), + 0, ((u64)sc->cmnd[0] << 32 | + (u64)sc->cmnd[2] << 24 | + (u64)sc->cmnd[3] << 16 | + (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), + (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); + + sc->scsi_done(sc); } + return true; +} + +static void fnic_cleanup_io(struct fnic *fnic) +{ + scsi_host_busy_iter(fnic->lport->host, + fnic_cleanup_io_iter, fnic); } void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq, @@ -1555,143 +1555,140 @@ static inline int fnic_queue_abort_io_req(struct fnic *fnic, int tag, return 0; } -static void fnic_rport_exch_reset(struct fnic *fnic, u32 port_id) +struct fnic_rport_abort_io_iter_data { + struct fnic *fnic; + u32 port_id; + int term_cnt; +}; + +static bool fnic_rport_abort_io(struct scsi_cmnd *sc, void *data, bool reserved) { - int tag; - int abt_tag; - int term_cnt = 0; + struct fnic_rport_abort_io_iter_data *iter_data = data; + struct fnic *fnic = iter_data->fnic; + int abt_tag = sc->request->tag; struct fnic_io_req *io_req; spinlock_t *io_lock; unsigned long flags; - struct scsi_cmnd *sc; struct reset_stats *reset_stats = &fnic->fnic_stats.reset_stats; struct terminate_stats *term_stats = &fnic->fnic_stats.term_stats; struct scsi_lun fc_lun; enum fnic_ioreq_state old_ioreq_state; - FNIC_SCSI_DBG(KERN_DEBUG, - fnic->lport->host, - "fnic_rport_exch_reset called portid 0x%06x\n", - port_id); - - if (fnic->in_remove) - return; - - for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { - abt_tag = tag; - io_lock = fnic_io_lock_tag(fnic, tag); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(fnic->lport->host, tag); - if (!sc) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } + io_lock = fnic_io_lock_tag(fnic, abt_tag); + spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(sc); - if (!io_req || io_req->port_id != port_id) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } + if (!io_req || io_req->port_id != iter_data->port_id) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } - if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && - (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && + (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "fnic_rport_exch_reset dev rst not pending sc 0x%p\n", sc); - spin_unlock_irqrestore(io_lock, flags); - continue; - } + spin_unlock_irqrestore(io_lock, flags); + return true; + } - /* - * Found IO that is still pending with firmware and - * belongs to rport that went away - */ - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - if (io_req->abts_done) { - shost_printk(KERN_ERR, fnic->lport->host, + /* + * Found IO that is still pending with firmware and + * belongs to rport that went away + */ + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } + if (io_req->abts_done) { + shost_printk(KERN_ERR, fnic->lport->host, "fnic_rport_exch_reset: io_req->abts_done is set " "state is %s\n", fnic_ioreq_state_to_str(CMD_STATE(sc))); - } + } - if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) { - shost_printk(KERN_ERR, fnic->lport->host, - "rport_exch_reset " - "IO not yet issued %p tag 0x%x flags " - "%x state %d\n", - sc, tag, CMD_FLAGS(sc), CMD_STATE(sc)); - } - old_ioreq_state = CMD_STATE(sc); - CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; - CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { - atomic64_inc(&reset_stats->device_reset_terminates); - abt_tag = (tag | FNIC_TAG_DEV_RST); - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "fnic_rport_exch_reset dev rst sc 0x%p\n", - sc); - } + if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) { + shost_printk(KERN_ERR, fnic->lport->host, + "rport_exch_reset " + "IO not yet issued %p tag 0x%x flags " + "%x state %d\n", + sc, abt_tag, CMD_FLAGS(sc), CMD_STATE(sc)); + } + old_ioreq_state = CMD_STATE(sc); + CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; + CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; + if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { + atomic64_inc(&reset_stats->device_reset_terminates); + abt_tag |= FNIC_TAG_DEV_RST; + } + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "fnic_rport_exch_reset dev rst sc 0x%p\n", sc); + BUG_ON(io_req->abts_done); - BUG_ON(io_req->abts_done); + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "fnic_rport_reset_exch: Issuing abts\n"); - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "fnic_rport_reset_exch: Issuing abts\n"); + spin_unlock_irqrestore(io_lock, flags); + + /* Now queue the abort command to firmware */ + int_to_scsilun(sc->device->lun, &fc_lun); + if (fnic_queue_abort_io_req(fnic, abt_tag, + FCPIO_ITMF_ABT_TASK_TERM, + fc_lun.scsi_lun, io_req)) { + /* + * Revert the cmd state back to old state, if + * it hasn't changed in between. This cmd will get + * aborted later by scsi_eh, or cleaned up during + * lun reset + */ + spin_lock_irqsave(io_lock, flags); + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) + CMD_STATE(sc) = old_ioreq_state; spin_unlock_irqrestore(io_lock, flags); + } else { + spin_lock_irqsave(io_lock, flags); + if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) + CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; + else + CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; + spin_unlock_irqrestore(io_lock, flags); + atomic64_inc(&term_stats->terminates); + iter_data->term_cnt++; + } + return true; +} - /* Now queue the abort command to firmware */ - int_to_scsilun(sc->device->lun, &fc_lun); +static void fnic_rport_exch_reset(struct fnic *fnic, u32 port_id) +{ + struct terminate_stats *term_stats = &fnic->fnic_stats.term_stats; + struct fnic_rport_abort_io_iter_data iter_data = { + .fnic = fnic, + .port_id = port_id, + .term_cnt = 0, + }; - if (fnic_queue_abort_io_req(fnic, abt_tag, - FCPIO_ITMF_ABT_TASK_TERM, - fc_lun.scsi_lun, io_req)) { - /* - * Revert the cmd state back to old state, if - * it hasn't changed in between. This cmd will get - * aborted later by scsi_eh, or cleaned up during - * lun reset - */ - spin_lock_irqsave(io_lock, flags); - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) - CMD_STATE(sc) = old_ioreq_state; - spin_unlock_irqrestore(io_lock, flags); - } else { - spin_lock_irqsave(io_lock, flags); - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) - CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; - else - CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; - spin_unlock_irqrestore(io_lock, flags); - atomic64_inc(&term_stats->terminates); - term_cnt++; - } - } - if (term_cnt > atomic64_read(&term_stats->max_terminates)) - atomic64_set(&term_stats->max_terminates, term_cnt); + FNIC_SCSI_DBG(KERN_DEBUG, + fnic->lport->host, + "fnic_rport_exch_reset called portid 0x%06x\n", + port_id); + + if (fnic->in_remove) + return; + + scsi_host_busy_iter(fnic->lport->host, fnic_rport_abort_io, + &iter_data); + if (iter_data.term_cnt > atomic64_read(&term_stats->max_terminates)) + atomic64_set(&term_stats->max_terminates, iter_data.term_cnt); } void fnic_terminate_rport_io(struct fc_rport *rport) { - int tag; - int abt_tag; - int term_cnt = 0; - struct fnic_io_req *io_req; - spinlock_t *io_lock; - unsigned long flags; - struct scsi_cmnd *sc; - struct scsi_lun fc_lun; struct fc_rport_libfc_priv *rdata; struct fc_lport *lport; struct fnic *fnic; - struct fc_rport *cmd_rport; - struct reset_stats *reset_stats; - struct terminate_stats *term_stats; - enum fnic_ioreq_state old_ioreq_state; if (!rport) { printk(KERN_ERR "fnic_terminate_rport_io: rport is NULL\n"); @@ -1719,108 +1716,7 @@ void fnic_terminate_rport_io(struct fc_rport *rport) if (fnic->in_remove) return; - reset_stats = &fnic->fnic_stats.reset_stats; - term_stats = &fnic->fnic_stats.term_stats; - - for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { - abt_tag = tag; - io_lock = fnic_io_lock_tag(fnic, tag); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(fnic->lport->host, tag); - if (!sc) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - io_req = (struct fnic_io_req *)CMD_SP(sc); - if (!io_req) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - cmd_rport = starget_to_rport(scsi_target(sc->device)); - if (rport != cmd_rport) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && - (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "fnic_terminate_rport_io dev rst not pending sc 0x%p\n", - sc); - spin_unlock_irqrestore(io_lock, flags); - continue; - } - /* - * Found IO that is still pending with firmware and - * belongs to rport that went away - */ - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - if (io_req->abts_done) { - shost_printk(KERN_ERR, fnic->lport->host, - "fnic_terminate_rport_io: io_req->abts_done is set " - "state is %s\n", - fnic_ioreq_state_to_str(CMD_STATE(sc))); - } - if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) { - FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, - "fnic_terminate_rport_io " - "IO not yet issued %p tag 0x%x flags " - "%x state %d\n", - sc, tag, CMD_FLAGS(sc), CMD_STATE(sc)); - } - old_ioreq_state = CMD_STATE(sc); - CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; - CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { - atomic64_inc(&reset_stats->device_reset_terminates); - abt_tag = (tag | FNIC_TAG_DEV_RST); - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "fnic_terminate_rport_io dev rst sc 0x%p\n", sc); - } - - BUG_ON(io_req->abts_done); - - FNIC_SCSI_DBG(KERN_DEBUG, - fnic->lport->host, - "fnic_terminate_rport_io: Issuing abts\n"); - - spin_unlock_irqrestore(io_lock, flags); - - /* Now queue the abort command to firmware */ - int_to_scsilun(sc->device->lun, &fc_lun); - - if (fnic_queue_abort_io_req(fnic, abt_tag, - FCPIO_ITMF_ABT_TASK_TERM, - fc_lun.scsi_lun, io_req)) { - /* - * Revert the cmd state back to old state, if - * it hasn't changed in between. This cmd will get - * aborted later by scsi_eh, or cleaned up during - * lun reset - */ - spin_lock_irqsave(io_lock, flags); - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) - CMD_STATE(sc) = old_ioreq_state; - spin_unlock_irqrestore(io_lock, flags); - } else { - spin_lock_irqsave(io_lock, flags); - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) - CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; - else - CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; - spin_unlock_irqrestore(io_lock, flags); - atomic64_inc(&term_stats->terminates); - term_cnt++; - } - } - if (term_cnt > atomic64_read(&term_stats->max_terminates)) - atomic64_set(&term_stats->max_terminates, term_cnt); - + fnic_rport_exch_reset(fnic, rport->port_id); } /* @@ -2115,163 +2011,174 @@ static inline int fnic_queue_dr_io_req(struct fnic *fnic, return ret; } -/* - * Clean up any pending aborts on the lun - * For each outstanding IO on this lun, whose abort is not completed by fw, - * issue a local abort. Wait for abort to complete. Return 0 if all commands - * successfully aborted, 1 otherwise - */ -static int fnic_clean_pending_aborts(struct fnic *fnic, - struct scsi_cmnd *lr_sc) +struct fnic_pending_aborts_iter_data { + struct fnic *fnic; + struct scsi_device *lun_dev; + int ret; +}; + +static bool fnic_pending_aborts_iter(struct scsi_cmnd *sc, + void *data, bool reserved) { - int tag, abt_tag; + struct fnic_pending_aborts_iter_data *iter_data = data; + struct fnic *fnic = iter_data->fnic; + struct scsi_device *lun_dev = iter_data->lun_dev; + int abt_tag = sc->request->tag; struct fnic_io_req *io_req; spinlock_t *io_lock; unsigned long flags; - int ret = 0; - struct scsi_cmnd *sc; struct scsi_lun fc_lun; - struct scsi_device *lun_dev = lr_sc->device; DECLARE_COMPLETION_ONSTACK(tm_done); enum fnic_ioreq_state old_ioreq_state; - for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { - io_lock = fnic_io_lock_tag(fnic, tag); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(fnic->lport->host, tag); - /* - * ignore this lun reset cmd if issued using new SC - * or cmds that do not belong to this lun - */ - if (!sc || sc == lr_sc || sc->device != lun_dev) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - io_req = (struct fnic_io_req *)CMD_SP(sc); - - if (!io_req || sc->device != lun_dev) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - /* - * Found IO that is still pending with firmware and - * belongs to the LUN that we are resetting - */ - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "Found IO in %s on lun\n", - fnic_ioreq_state_to_str(CMD_STATE(sc))); + if (sc->device != lun_dev) + return true; + if (reserved) + return true; - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && - (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { - FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, - "%s dev rst not pending sc 0x%p\n", __func__, - sc); - spin_unlock_irqrestore(io_lock, flags); - continue; - } + io_lock = fnic_io_lock_tag(fnic, abt_tag); + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } - if (io_req->abts_done) - shost_printk(KERN_ERR, fnic->lport->host, - "%s: io_req->abts_done is set state is %s\n", - __func__, fnic_ioreq_state_to_str(CMD_STATE(sc))); - old_ioreq_state = CMD_STATE(sc); - /* - * Any pending IO issued prior to reset is expected to be - * in abts pending state, if not we need to set - * FNIC_IOREQ_ABTS_PENDING to indicate the IO is abort pending. - * When IO is completed, the IO will be handed over and - * handled in this function. - */ - CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; + /* + * Found IO that is still pending with firmware and + * belongs to the LUN that we are resetting + */ + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "Found IO in %s on lun\n", + fnic_ioreq_state_to_str(CMD_STATE(sc))); - BUG_ON(io_req->abts_done); + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } + if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && + (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { + FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, + "%s dev rst not pending sc 0x%p\n", __func__, + sc); + spin_unlock_irqrestore(io_lock, flags); + return true; + } - abt_tag = tag; - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { - abt_tag |= FNIC_TAG_DEV_RST; - FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, - "%s: dev rst sc 0x%p\n", __func__, sc); - } + if (io_req->abts_done) + shost_printk(KERN_ERR, fnic->lport->host, + "%s: io_req->abts_done is set state is %s\n", + __func__, fnic_ioreq_state_to_str(CMD_STATE(sc))); + old_ioreq_state = CMD_STATE(sc); + /* + * Any pending IO issued prior to reset is expected to be + * in abts pending state, if not we need to set + * FNIC_IOREQ_ABTS_PENDING to indicate the IO is abort pending. + * When IO is completed, the IO will be handed over and + * handled in this function. + */ + CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; - CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; - io_req->abts_done = &tm_done; - spin_unlock_irqrestore(io_lock, flags); + BUG_ON(io_req->abts_done); - /* Now queue the abort command to firmware */ - int_to_scsilun(sc->device->lun, &fc_lun); + if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { + abt_tag |= FNIC_TAG_DEV_RST; + FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, + "%s: dev rst sc 0x%p\n", __func__, sc); + } - if (fnic_queue_abort_io_req(fnic, abt_tag, - FCPIO_ITMF_ABT_TASK_TERM, - fc_lun.scsi_lun, io_req)) { - spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); - if (io_req) - io_req->abts_done = NULL; - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) - CMD_STATE(sc) = old_ioreq_state; - spin_unlock_irqrestore(io_lock, flags); - ret = 1; - goto clean_pending_aborts_end; - } else { - spin_lock_irqsave(io_lock, flags); - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) - CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; - spin_unlock_irqrestore(io_lock, flags); - } - CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; + CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; + io_req->abts_done = &tm_done; + spin_unlock_irqrestore(io_lock, flags); - wait_for_completion_timeout(&tm_done, - msecs_to_jiffies - (fnic->config.ed_tov)); + /* Now queue the abort command to firmware */ + int_to_scsilun(sc->device->lun, &fc_lun); - /* Recheck cmd state to check if it is now aborted */ + if (fnic_queue_abort_io_req(fnic, abt_tag, + FCPIO_ITMF_ABT_TASK_TERM, + fc_lun.scsi_lun, io_req)) { spin_lock_irqsave(io_lock, flags); io_req = (struct fnic_io_req *)CMD_SP(sc); - if (!io_req) { - spin_unlock_irqrestore(io_lock, flags); - CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; - continue; - } + if (io_req) + io_req->abts_done = NULL; + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) + CMD_STATE(sc) = old_ioreq_state; + spin_unlock_irqrestore(io_lock, flags); + return false; + } else { + spin_lock_irqsave(io_lock, flags); + if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) + CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; + spin_unlock_irqrestore(io_lock, flags); + } + CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; - io_req->abts_done = NULL; + wait_for_completion_timeout(&tm_done, msecs_to_jiffies + (fnic->config.ed_tov)); - /* if abort is still pending with fw, fail */ - if (CMD_ABTS_STATUS(sc) == FCPIO_INVALID_CODE) { - spin_unlock_irqrestore(io_lock, flags); - CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_DONE; - ret = 1; - goto clean_pending_aborts_end; - } - CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; + /* Recheck cmd state to check if it is now aborted */ + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; + return true; + } - /* original sc used for lr is handled by dev reset code */ - if (sc != lr_sc) - CMD_SP(sc) = NULL; + io_req->abts_done = NULL; + + /* if abort is still pending with fw, fail */ + if (CMD_ABTS_STATUS(sc) == FCPIO_INVALID_CODE) { spin_unlock_irqrestore(io_lock, flags); + CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_DONE; + iter_data->ret = FAILED; + return false; + } + CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; - /* original sc used for lr is handled by dev reset code */ - if (sc != lr_sc) { - fnic_release_ioreq_buf(fnic, io_req, sc); - mempool_free(io_req, fnic->io_req_pool); - } + /* original sc used for lr is handled by dev reset code */ + CMD_SP(sc) = NULL; + spin_unlock_irqrestore(io_lock, flags); - /* - * Any IO is returned during reset, it needs to call scsi_done - * to return the scsi_cmnd to upper layer. - */ - if (sc->scsi_done) { - /* Set result to let upper SCSI layer retry */ - sc->result = DID_RESET << 16; - sc->scsi_done(sc); - } + /* original sc used for lr is handled by dev reset code */ + fnic_release_ioreq_buf(fnic, io_req, sc); + mempool_free(io_req, fnic->io_req_pool); + + /* + * Any IO is returned during reset, it needs to call scsi_done + * to return the scsi_cmnd to upper layer. + */ + if (sc->scsi_done) { + /* Set result to let upper SCSI layer retry */ + sc->result = DID_RESET << 16; + sc->scsi_done(sc); } + return true; +} + +/* + * Clean up any pending aborts on the lun + * For each outstanding IO on this lun, whose abort is not completed by fw, + * issue a local abort. Wait for abort to complete. Return 0 if all commands + * successfully aborted, 1 otherwise + */ +static int fnic_clean_pending_aborts(struct fnic *fnic, + struct scsi_cmnd *lr_sc) +{ + int ret = SUCCESS; + struct fnic_pending_aborts_iter_data iter_data = { + .fnic = fnic, + .lun_dev = lr_sc->device, + .ret = SUCCESS, + }; + + scsi_host_busy_iter(fnic->lport->host, + fnic_pending_aborts_iter, &iter_data); + if (iter_data.ret == FAILED) { + ret = iter_data.ret; + goto clean_pending_aborts_end; + } schedule_timeout(msecs_to_jiffies(2 * fnic->config.ed_tov)); /* walk again to check, if IOs are still pending in fw */ @@ -2726,6 +2633,43 @@ void fnic_exch_mgr_reset(struct fc_lport *lp, u32 sid, u32 did) } +static bool fnic_abts_pending_iter(struct scsi_cmnd *sc, void *data, + bool reserved) +{ + struct fnic_pending_aborts_iter_data *iter_data = data; + struct fnic *fnic = iter_data->fnic; + int cmd_state; + struct fnic_io_req *io_req; + spinlock_t *io_lock; + unsigned long flags; + + if (iter_data->lun_dev && sc->device != iter_data->lun_dev) + return true; + + io_lock = fnic_io_lock_hash(fnic, sc); + spin_lock_irqsave(io_lock, flags); + + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } + + /* + * Found IO that is still pending with firmware and + * belongs to the LUN that we are resetting + */ + FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, + "Found IO in %s on lun\n", + fnic_ioreq_state_to_str(CMD_STATE(sc))); + cmd_state = CMD_STATE(sc); + spin_unlock_irqrestore(io_lock, flags); + if (cmd_state == FNIC_IOREQ_ABTS_PENDING) + iter_data->ret = 1; + + return iter_data->ret ? false : true; +} + /* * fnic_is_abts_pending() is a helper function that * walks through tag map to check if there is any IOs pending,if there is one, @@ -2735,49 +2679,18 @@ void fnic_exch_mgr_reset(struct fc_lport *lp, u32 sid, u32 did) */ int fnic_is_abts_pending(struct fnic *fnic, struct scsi_cmnd *lr_sc) { - int tag; - struct fnic_io_req *io_req; - spinlock_t *io_lock; - unsigned long flags; - int ret = 0; - struct scsi_cmnd *sc; - struct scsi_device *lun_dev = NULL; + struct fnic_pending_aborts_iter_data iter_data = { + .fnic = fnic, + .lun_dev = NULL, + .ret = 0, + }; if (lr_sc) - lun_dev = lr_sc->device; + iter_data.lun_dev = lr_sc->device; /* walk again to check, if IOs are still pending in fw */ - for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { - sc = scsi_host_find_tag(fnic->lport->host, tag); - /* - * ignore this lun reset cmd or cmds that do not belong to - * this lun - */ - if (!sc || (lr_sc && (sc->device != lun_dev || sc == lr_sc))) - continue; - - io_lock = fnic_io_lock_hash(fnic, sc); - spin_lock_irqsave(io_lock, flags); - - io_req = (struct fnic_io_req *)CMD_SP(sc); + scsi_host_busy_iter(fnic->lport->host, + fnic_abts_pending_iter, &iter_data); - if (!io_req || sc->device != lun_dev) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - /* - * Found IO that is still pending with firmware and - * belongs to the LUN that we are resetting - */ - FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, - "Found IO in %s on lun\n", - fnic_ioreq_state_to_str(CMD_STATE(sc))); - - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) - ret = 1; - spin_unlock_irqrestore(io_lock, flags); - } - - return ret; + return iter_data.ret; } From patchwork Mon Feb 22 13:23:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386033 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4C52AC433DB for ; Mon, 22 Feb 2021 13:27:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 05A2064E5C for ; Mon, 22 Feb 2021 13:27:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231442AbhBVN1U (ORCPT ); Mon, 22 Feb 2021 08:27:20 -0500 Received: from mx2.suse.de ([195.135.220.15]:45266 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231736AbhBVNY5 (ORCPT ); Mon, 22 Feb 2021 08:24:57 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id AB72EAFB7; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 05/31] fnic: check for started requests in fnic_wq_copy_cleanup_handler() Date: Mon, 22 Feb 2021 14:23:39 +0100 Message-Id: <20210222132405.91369-6-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org fnic_wq_copy_cleanup_handler() is using scsi_host_find_tag() to map id to a scsi command. However, as per discussion on the mailinglist scsi_host_find_tag() might return a non-started request, so we need to check the returned command with blk_mq_request_started() to avoid the function tripping over a non-initialized command. Signed-off-by: Hannes Reinecke --- drivers/scsi/fnic/fnic_scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c index c7f37afa3069..19324b52c089 100644 --- a/drivers/scsi/fnic/fnic_scsi.c +++ b/drivers/scsi/fnic/fnic_scsi.c @@ -1466,7 +1466,7 @@ void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq, return; sc = scsi_host_find_tag(fnic->lport->host, id); - if (!sc) + if (!sc || !blk_mq_request_started(sc->request)) return; io_lock = fnic_io_lock_hash(fnic, sc); From patchwork Mon Feb 22 13:23:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386031 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58F00C433E0 for ; Mon, 22 Feb 2021 13:28:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 123E064E40 for ; Mon, 22 Feb 2021 13:28:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230349AbhBVN2S (ORCPT ); Mon, 22 Feb 2021 08:28:18 -0500 Received: from mx2.suse.de ([195.135.220.15]:47786 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231497AbhBVN1j (ORCPT ); Mon, 22 Feb 2021 08:27:39 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id A838EAFB0; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 06/31] scsi: use real inquiry data when initialising devices Date: Mon, 22 Feb 2021 14:23:40 +0100 Message-Id: <20210222132405.91369-7-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Use dummy inquiry data when initialising devices and not just some 'nullnullnull' string. Signed-off-by: Hannes Reinecke --- drivers/scsi/scsi_scan.c | 34 +++++++++++++++++++++++++--------- 1 file changed, 25 insertions(+), 9 deletions(-) diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 9af50e6f94c4..11aec38250ca 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -81,7 +81,27 @@ #define SCSI_SCAN_TARGET_PRESENT 1 #define SCSI_SCAN_LUN_PRESENT 2 -static const char *scsi_null_device_strs = "nullnullnullnull"; +/* + * Dummy inquiry for virtual LUNs: + * + * standard INQUIRY: [qualifier indicates no connected LU] + * PQual=1 Device_type=31 RMB=0 LU_CONG=0 version=0x05 [SPC-3] + * [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=2 + * SCCS=0 ACC=0 TPGS=0 3PC=0 Protect=0 [BQue=0] + * EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0 + * [RelAdr=0] WBus16=0 Sync=0 [Linked=0] [TranDis=0] CmdQue=0 + * length=36 (0x24) Peripheral device type: no physical device on this lu + * Vendor identification: LINUX + * Product identification: VIRTUALLUN + * Product revision level: 1.0 + */ +static const unsigned char scsi_null_inquiry[36] = { + 0x3f, 0x00, 0x05, 0x02, 0x1f, 0x00, 0x00, 0x00, + 0x4c, 0x49, 0x4e, 0x55, 0x58, 0x20, 0x20, 0x20, + 0x56, 0x49, 0x52, 0x54, 0x55, 0x41, 0x4c, 0x4c, + 0x55, 0x4e, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, + 0x31, 0x2e, 0x30, 0x20 +}; #define MAX_SCSI_LUNS 512 @@ -224,9 +244,10 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget, if (!sdev) goto out; - sdev->vendor = scsi_null_device_strs; - sdev->model = scsi_null_device_strs; - sdev->rev = scsi_null_device_strs; + sdev->type = scsi_null_inquiry[0] & 0x1f; + sdev->vendor = scsi_null_inquiry + 8; + sdev->model = scsi_null_inquiry + 16; + sdev->rev = scsi_null_inquiry + 32; sdev->host = shost; sdev->queue_ramp_up_period = SCSI_DEFAULT_RAMP_UP_PERIOD; sdev->id = starget->id; @@ -253,11 +274,6 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget, * slave_configure function */ sdev->max_device_blocked = SCSI_DEFAULT_DEVICE_BLOCKED; - /* - * Some low level driver could use device->type - */ - sdev->type = -1; - /* * Assume that the device will have handshaking problems, * and then fix this field later if it turns out it From patchwork Mon Feb 22 13:23:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386030 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9EC94C433E0 for ; Mon, 22 Feb 2021 13:28:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5278A64E76 for ; Mon, 22 Feb 2021 13:28:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231314AbhBVN2g (ORCPT ); Mon, 22 Feb 2021 08:28:36 -0500 Received: from mx2.suse.de ([195.135.220.15]:47794 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231526AbhBVN1k (ORCPT ); Mon, 22 Feb 2021 08:27:40 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id ACE17AFCD; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 07/31] scsi: Use dummy inquiry data for the host device Date: Mon, 22 Feb 2021 14:23:41 +0100 Message-Id: <20210222132405.91369-8-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Attach the dummy inquiry data to the scsi host device and use it to check if any given device is a scsi host device. Signed-off-by: Hannes Reinecke --- drivers/scsi/scsi_scan.c | 17 +++++++++++++++-- drivers/scsi/scsi_sysfs.c | 3 ++- include/scsi/scsi_host.h | 7 ++++--- 3 files changed, 21 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 11aec38250ca..234b1cd6b50d 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -1921,9 +1921,11 @@ struct scsi_device *scsi_get_host_dev(struct Scsi_Host *shost) goto out; sdev = scsi_alloc_sdev(starget, 0, NULL); - if (sdev) + if (sdev) { sdev->borken = 0; - else + sdev->inquiry = (unsigned char *)scsi_null_inquiry; + sdev->inquiry_len = sizeof(scsi_null_inquiry); + } else scsi_target_reap(starget); put_device(&starget->dev); out: @@ -1948,3 +1950,14 @@ void scsi_free_host_dev(struct scsi_device *sdev) } EXPORT_SYMBOL(scsi_free_host_dev); +/** + * scsi_device_is_host_dev - Check if a scsi device is a host device + * @sdev: SCSI device to test + * + * Returns: true if @sdev is a host device, false otherwise + */ +bool scsi_device_is_host_dev(struct scsi_device *sdev) +{ + return ((const unsigned char *)sdev->inquiry == scsi_null_inquiry); +} +EXPORT_SYMBOL_GPL(scsi_device_is_host_dev); diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index b6378c8ca783..64b51ebdca76 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -496,7 +496,8 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work) kfree_rcu(vpd_pg80, rcu); if (vpd_pg89) kfree_rcu(vpd_pg89, rcu); - kfree(sdev->inquiry); + if (!scsi_device_is_host_dev(sdev)) + kfree(sdev->inquiry); kfree(sdev); if (parent) diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index e30fd963b97d..b077ad9c666b 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -788,14 +788,15 @@ void scsi_host_busy_iter(struct Scsi_Host *, struct class_container; /* - * These two functions are used to allocate and free a pseudo device - * which will connect to the host adapter itself rather than any - * physical device. You must deallocate when you are done with the + * These three functions are used to allocate, free, and test for + * a pseudo device which will connect to the host adapter itself rather + * than any physical device. You must deallocate when you are done with the * thing. This physical pseudo-device isn't real and won't be available * from any high-level drivers. */ extern void scsi_free_host_dev(struct scsi_device *); extern struct scsi_device *scsi_get_host_dev(struct Scsi_Host *); +bool scsi_device_is_host_dev(struct scsi_device *); /* * DIF defines the exchange of protection information between From patchwork Mon Feb 22 13:23:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386505 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A43A9C433E0 for ; Mon, 22 Feb 2021 13:28:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 65A5364E74 for ; Mon, 22 Feb 2021 13:28:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231219AbhBVN21 (ORCPT ); Mon, 22 Feb 2021 08:28:27 -0500 Received: from mx2.suse.de ([195.135.220.15]:47812 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230218AbhBVN1k (ORCPT ); Mon, 22 Feb 2021 08:27:40 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id AFBD7AFD2; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 08/31] scsi: revamp host device handling Date: Mon, 22 Feb 2021 14:23:42 +0100 Message-Id: <20210222132405.91369-9-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Ensure that the host device is excluded from scanning by setting the BLIST_NOLUN flag, and avoid it being presented in sysfs. Also move the device id from using the ->this_id value as target id (which is a bit odd as it's typically is set to -1 anyway) to using ->max_channel + 1 as the channel number and '0' as the target id. With that the host device is now handled like any other scsi device, which means we can drop the scsi_put_host_dev() function and let scsi_forget_host() etc handle the deallocation. We only need to ensure that the host device is deallocated last is the driver might need it to send commands during teardown. Signed-off-by: Hannes Reinecke --- drivers/scsi/scsi_devinfo.c | 1 + drivers/scsi/scsi_scan.c | 55 +++++++++++++++++++------------------ include/scsi/scsi_host.h | 13 +++++---- 3 files changed, 37 insertions(+), 32 deletions(-) diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c index d92cec12454c..e70d87c5342b 100644 --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -195,6 +195,7 @@ static struct { {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, + {"LINUX", "VIRTUALLUN", NULL, BLIST_NOLUN}, {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 234b1cd6b50d..573cf3a3ca28 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -1094,6 +1094,15 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget, if (!sdev) goto out; + if (scsi_device_is_host_dev(sdev)) { + bflags = scsi_get_device_flags(sdev, + sdev->vendor, + sdev->model); + if (bflagsp) + *bflagsp = bflags; + return SCSI_SCAN_LUN_PRESENT; + } + result = kmalloc(result_len, GFP_KERNEL | ((shost->unchecked_isa_dma) ? __GFP_DMA : 0)); if (!result) @@ -1712,6 +1721,9 @@ static void scsi_sysfs_add_devices(struct Scsi_Host *shost) /* If device is already visible, skip adding it to sysfs */ if (sdev->is_visible) continue; + /* Host devices should never be visible in sysfs */ + if (scsi_device_is_host_dev(sdev)) + continue; if (!scsi_host_scan_allowed(shost) || scsi_sysfs_add_sdev(sdev) != 0) __scsi_remove_device(sdev); @@ -1876,12 +1888,16 @@ EXPORT_SYMBOL(scsi_scan_host); void scsi_forget_host(struct Scsi_Host *shost) { - struct scsi_device *sdev; + struct scsi_device *sdev, *host_sdev = NULL; unsigned long flags; restart: spin_lock_irqsave(shost->host_lock, flags); list_for_each_entry(sdev, &shost->__devices, siblings) { + if (scsi_device_is_host_dev(sdev)) { + host_sdev = sdev; + continue; + } if (sdev->sdev_state == SDEV_DEL) continue; spin_unlock_irqrestore(shost->host_lock, flags); @@ -1889,10 +1905,13 @@ void scsi_forget_host(struct Scsi_Host *shost) goto restart; } spin_unlock_irqrestore(shost->host_lock, flags); + /* Remove host device last, might be needed to send commands */ + if (host_sdev) + __scsi_remove_device(host_sdev); } /** - * scsi_get_host_dev - Create a scsi_device that points to the host adapter itself + * scsi_get_host_dev - Create a virtual scsi_device to the host adapter * @shost: Host that needs a scsi_device * * Lock status: None assumed. @@ -1900,13 +1919,12 @@ void scsi_forget_host(struct Scsi_Host *shost) * Returns: The scsi_device or NULL * * Notes: - * Attach a single scsi_device to the Scsi_Host - this should - * be made to look like a "pseudo-device" that points to the - * HA itself. - * - * Note - this device is not accessible from any high-level - * drivers (including generics), which is probably not - * optimal. We can add hooks later to attach. + * Attach a single scsi_device to the Scsi_Host. The primary aim + * for this device is to serve as a container from which valid + * scsi commands can be allocated from. Each scsi command will carry + * an unused/free command tag, which then can be used by the LLDD to + * send internal or passthrough commands without having to find a + * valid command tag internally. */ struct scsi_device *scsi_get_host_dev(struct Scsi_Host *shost) { @@ -1916,7 +1934,8 @@ struct scsi_device *scsi_get_host_dev(struct Scsi_Host *shost) mutex_lock(&shost->scan_mutex); if (!scsi_host_scan_allowed(shost)) goto out; - starget = scsi_alloc_target(&shost->shost_gendev, 0, shost->this_id); + starget = scsi_alloc_target(&shost->shost_gendev, + shost->max_channel + 1, 0); if (!starget) goto out; @@ -1934,22 +1953,6 @@ struct scsi_device *scsi_get_host_dev(struct Scsi_Host *shost) } EXPORT_SYMBOL(scsi_get_host_dev); -/** - * scsi_free_host_dev - Free a scsi_device that points to the host adapter itself - * @sdev: Host device to be freed - * - * Lock status: None assumed. - * - * Returns: Nothing - */ -void scsi_free_host_dev(struct scsi_device *sdev) -{ - BUG_ON(sdev->id != sdev->host->this_id); - - __scsi_remove_device(sdev); -} -EXPORT_SYMBOL(scsi_free_host_dev); - /** * scsi_device_is_host_dev - Check if a scsi device is a host device * @sdev: SCSI device to test diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index b077ad9c666b..ecc2d9dcfdf3 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -788,14 +788,15 @@ void scsi_host_busy_iter(struct Scsi_Host *, struct class_container; /* - * These three functions are used to allocate, free, and test for - * a pseudo device which will connect to the host adapter itself rather - * than any physical device. You must deallocate when you are done with the - * thing. This physical pseudo-device isn't real and won't be available + * These functions are used to allocate and test a pseudo device + * which will refer to the host adapter itself rather than any + * physical device. The device will be deallocated together with + * all other scsi devices, so there is no need to have a separate + * function to free it. + * This device will not show up in sysfs and won't be available * from any high-level drivers. */ -extern void scsi_free_host_dev(struct scsi_device *); -extern struct scsi_device *scsi_get_host_dev(struct Scsi_Host *); +struct scsi_device *scsi_get_host_dev(struct Scsi_Host *); bool scsi_device_is_host_dev(struct scsi_device *); /* From patchwork Mon Feb 22 13:23:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ACE82C433E0 for ; Mon, 22 Feb 2021 13:30:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4C37364DD0 for ; Mon, 22 Feb 2021 13:30:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229902AbhBVNaP (ORCPT ); Mon, 22 Feb 2021 08:30:15 -0500 Received: from mx2.suse.de ([195.135.220.15]:47810 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231129AbhBVN1k (ORCPT ); Mon, 22 Feb 2021 08:27:40 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id B180CAFDF; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 09/31] snic: use reserved commands Date: Mon, 22 Feb 2021 14:23:43 +0100 Message-Id: <20210222132405.91369-10-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Allocate a host device and use internal commands for host and device reset. This allows us to remove the special handling of host and bus reset commands. Signed-off-by: Hannes Reinecke --- drivers/scsi/snic/snic.h | 4 +- drivers/scsi/snic/snic_main.c | 7 ++ drivers/scsi/snic/snic_scsi.c | 159 ++++++++++++++-------------------- 3 files changed, 73 insertions(+), 97 deletions(-) diff --git a/drivers/scsi/snic/snic.h b/drivers/scsi/snic/snic.h index f4c666285bba..5a2428033190 100644 --- a/drivers/scsi/snic/snic.h +++ b/drivers/scsi/snic/snic.h @@ -59,7 +59,6 @@ */ #define SNIC_TAG_ABORT BIT(30) /* Tag indicating abort */ #define SNIC_TAG_DEV_RST BIT(29) /* Tag for device reset */ -#define SNIC_TAG_IOCTL_DEV_RST BIT(28) /* Tag for User Device Reset */ #define SNIC_TAG_MASK (BIT(24) - 1) /* Mask for lookup */ #define SNIC_NO_TAG -1 @@ -278,6 +277,7 @@ struct snic { /* Scsi Host info */ struct Scsi_Host *shost; + struct scsi_device *shost_dev; /* vnic related structures */ struct vnic_dev_bar bar0; @@ -380,7 +380,7 @@ int snic_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); int snic_abort_cmd(struct scsi_cmnd *); int snic_device_reset(struct scsi_cmnd *); int snic_host_reset(struct scsi_cmnd *); -int snic_reset(struct Scsi_Host *, struct scsi_cmnd *); +int snic_reset(struct Scsi_Host *); void snic_shutdown_scsi_cleanup(struct snic *); diff --git a/drivers/scsi/snic/snic_main.c b/drivers/scsi/snic/snic_main.c index 14f4ce665e58..ce0e7ab4ef1d 100644 --- a/drivers/scsi/snic/snic_main.c +++ b/drivers/scsi/snic/snic_main.c @@ -303,6 +303,7 @@ static int snic_add_host(struct Scsi_Host *shost, struct pci_dev *pdev) { int ret = 0; + struct snic *snic = shost_priv(shost); ret = scsi_add_host(shost, &pdev->dev); if (ret) { @@ -313,6 +314,12 @@ snic_add_host(struct Scsi_Host *shost, struct pci_dev *pdev) return ret; } + snic->shost_dev = scsi_get_host_dev(shost); + if (!snic->shost_dev) { + SNIC_HOST_ERR(shost, + "snic: scsi_get_virtual_dev failed\n"); + return -ENOMEM; + } SNIC_BUG_ON(shost->work_q != NULL); snprintf(shost->work_q_name, sizeof(shost->work_q_name), "scsi_wq_%d", shost->host_no); diff --git a/drivers/scsi/snic/snic_scsi.c b/drivers/scsi/snic/snic_scsi.c index 6dd0ff188bb4..f5aca883b693 100644 --- a/drivers/scsi/snic/snic_scsi.c +++ b/drivers/scsi/snic/snic_scsi.c @@ -77,7 +77,7 @@ static const char * const snic_io_status_str[] = { [SNIC_STAT_FATAL_ERROR] = "SNIC_STAT_FATAL_ERROR", }; -static void snic_scsi_cleanup(struct snic *, int); +static void snic_scsi_cleanup(struct snic *); const char * snic_state_to_str(unsigned int state) @@ -867,7 +867,6 @@ snic_process_itmf_cmpl(struct snic *snic, break; case SNIC_TAG_DEV_RST: - case SNIC_TAG_DEV_RST | SNIC_TAG_IOCTL_DEV_RST: snic_proc_dr_cmpl_locked(snic, fwreq, cmpl_stat, cmnd_id, sc); spin_unlock_irqrestore(io_lock, flags); ret = 0; @@ -920,7 +919,6 @@ static void snic_itmf_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) { struct scsi_cmnd *sc = NULL; - struct snic_req_info *rqi = NULL; struct snic_itmf_cmpl *itmf_cmpl = NULL; ulong ctx; u32 cmnd_id; @@ -938,14 +936,6 @@ snic_itmf_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) "Itmf_cmpl: nterm %u , flags 0x%x\n", le32_to_cpu(itmf_cmpl->nterminated), itmf_cmpl->flags); - /* spl case, dev reset issued through ioctl */ - if (cmnd_id & SNIC_TAG_IOCTL_DEV_RST) { - rqi = (struct snic_req_info *) ctx; - sc = rqi->sc; - - goto ioctl_dev_rst; - } - if ((cmnd_id & SNIC_TAG_MASK) >= snic->max_tag_id) { SNIC_HOST_ERR(snic->shost, "Itmf_cmpl: Tag 0x%x out of Range,HdrStat %s\n", @@ -958,7 +948,6 @@ snic_itmf_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) sc = scsi_host_find_tag(snic->shost, cmnd_id & SNIC_TAG_MASK); WARN_ON_ONCE(!sc); -ioctl_dev_rst: if (!sc) { atomic64_inc(&snic->s_stats.io.sc_null); SNIC_HOST_ERR(snic->shost, @@ -974,13 +963,13 @@ snic_itmf_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) static void -snic_hba_reset_scsi_cleanup(struct snic *snic, struct scsi_cmnd *sc) +snic_hba_reset_scsi_cleanup(struct snic *snic) { struct snic_stats *st = &snic->s_stats; long act_ios = 0, act_fwreqs = 0; SNIC_SCSI_DBG(snic->shost, "HBA Reset scsi cleanup.\n"); - snic_scsi_cleanup(snic, snic_cmd_tag(sc)); + snic_scsi_cleanup(snic); /* Update stats on pending IOs */ act_ios = atomic64_read(&st->io.active); @@ -1021,17 +1010,6 @@ snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) "reset_cmpl: type = %x, hdr_stat = %x, cmnd_id = %x, hid = %x, ctx = %lx\n", typ, hdr_stat, cmnd_id, hid, ctx); - /* spl case, host reset issued through ioctl */ - if (cmnd_id == SCSI_NO_TAG) { - rqi = (struct snic_req_info *) ctx; - SNIC_HOST_INFO(snic->shost, - "reset_cmpl:Tag %d ctx %lx cmpl stat %s\n", - cmnd_id, ctx, snic_io_status_to_str(hdr_stat)); - sc = rqi->sc; - - goto ioctl_hba_rst; - } - if (cmnd_id >= snic->max_tag_id) { SNIC_HOST_ERR(snic->shost, "reset_cmpl: Tag 0x%x out of Range,HdrStat %s\n", @@ -1042,7 +1020,6 @@ snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) } sc = scsi_host_find_tag(snic->shost, cmnd_id); -ioctl_hba_rst: if (!sc) { atomic64_inc(&snic->s_stats.io.sc_null); SNIC_HOST_ERR(snic->shost, @@ -1089,7 +1066,7 @@ snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) spin_unlock_irqrestore(io_lock, flags); /* scsi cleanup */ - snic_hba_reset_scsi_cleanup(snic, sc); + snic_hba_reset_scsi_cleanup(snic); SNIC_BUG_ON(snic_get_state(snic) != SNIC_OFFLINE && snic_get_state(snic) != SNIC_FWRESET); @@ -1359,7 +1336,7 @@ snic_issue_tm_req(struct snic *snic, int tmf) { struct snic_host_req *tmreq = NULL; - int req_id = 0, tag = snic_cmd_tag(sc); + int tag = snic_cmd_tag(sc); int ret = 0; if (snic_get_state(snic) == SNIC_FWRESET) @@ -1372,13 +1349,10 @@ snic_issue_tm_req(struct snic *snic, tmf, rqi, tag); - if (tmf == SNIC_ITMF_LUN_RESET) { + if (tmf == SNIC_ITMF_LUN_RESET) tmreq = snic_dr_req_init(snic, rqi); - req_id = SCSI_NO_TAG; - } else { + else tmreq = snic_abort_req_init(snic, rqi); - req_id = tag; - } if (!tmreq) { ret = -ENOMEM; @@ -1386,17 +1360,17 @@ snic_issue_tm_req(struct snic *snic, goto tmreq_err; } - ret = snic_queue_itmf_req(snic, tmreq, sc, tmf, req_id); + ret = snic_queue_itmf_req(snic, tmreq, sc, tmf, tag); tmreq_err: if (ret) { SNIC_HOST_ERR(snic->shost, - "issu_tmreq: Queueing ITMF(%d) Req, sc %p rqi %p req_id %d tag %x fails err = %d\n", - tmf, sc, rqi, req_id, tag, ret); + "issu_tmreq: Queing ITMF(%d) Req, sc %p rqi %p tag %x fails err = %d\n", + tmf, sc, rqi, tag, ret); } else { SNIC_SCSI_DBG(snic->shost, - "issu_tmreq: Queueing ITMF(%d) Req, sc %p, rqi %p, req_id %d tag %x - Success.\n", - tmf, sc, rqi, req_id, tag); + "issu_tmreq: Queuing ITMF(%d) Req, sc %p, rqi %p, tag %x - Success.\n", + tmf, sc, rqi, tag); } atomic_dec(&snic->ios_inflight); @@ -2146,7 +2120,7 @@ snic_device_reset(struct scsi_cmnd *sc) struct Scsi_Host *shost = sc->device->host; struct snic *snic = shost_priv(shost); struct snic_req_info *rqi = NULL; - int tag = snic_cmd_tag(sc); + struct scsi_cmnd *reset_sc = NULL; int start_time = jiffies; int ret = FAILED; int dr_supp = 0; @@ -2170,42 +2144,41 @@ snic_device_reset(struct scsi_cmnd *sc) goto dev_rst_end; } - /* There is no tag when lun reset is issue through ioctl. */ - if (unlikely(tag <= SNIC_NO_TAG)) { - SNIC_HOST_INFO(snic->shost, - "Devrst: LUN Reset Recvd thru IOCTL.\n"); + reset_sc = scsi_get_internal_cmd(sc->device, DMA_NONE, REQ_NOWAIT); + if (!reset_sc) + goto dev_rst_end; - rqi = snic_req_init(snic, 0); - if (!rqi) - goto dev_rst_end; + rqi = snic_req_init(snic, 0); + if (!rqi) + goto dev_rst_end; - memset(scsi_cmd_priv(sc), 0, - sizeof(struct snic_internal_io_state)); - CMD_SP(sc) = (char *)rqi; - CMD_FLAGS(sc) = SNIC_NO_FLAGS; + memset(scsi_cmd_priv(reset_sc), 0, + sizeof(struct snic_internal_io_state)); + CMD_SP(reset_sc) = (char *)rqi; + CMD_FLAGS(reset_sc) = SNIC_NO_FLAGS; - /* Add special tag for dr coming from user spc */ - rqi->tm_tag = SNIC_TAG_IOCTL_DEV_RST; - rqi->sc = sc; - } + rqi->sc = reset_sc; - ret = snic_send_dr_and_wait(snic, sc); + ret = snic_send_dr_and_wait(snic, reset_sc); if (ret) { SNIC_HOST_ERR(snic->shost, "Devrst: IO w/ Tag %x Failed w/ err = %d\n", - tag, ret); + snic_cmd_tag(reset_sc), ret); - snic_unlink_and_release_req(snic, sc, 0); + snic_unlink_and_release_req(snic, reset_sc, 0); goto dev_rst_end; } - ret = snic_dr_finish(snic, sc); + ret = snic_dr_finish(snic, reset_sc); dev_rst_end: - SNIC_TRC(snic->shost->host_no, tag, (ulong) sc, - jiffies_to_msecs(jiffies - start_time), - 0, SNIC_TRC_CMD(sc), SNIC_TRC_CMD_STATE_FLAGS(sc)); + if (reset_sc) { + SNIC_TRC(snic->shost->host_no, snic_cmd_tag(reset_sc), (ulong) reset_sc, + jiffies_to_msecs(jiffies - start_time), + 0, SNIC_TRC_CMD(reset_sc), SNIC_TRC_CMD_STATE_FLAGS(reset_sc)); + scsi_put_internal_cmd(reset_sc); + } SNIC_SCSI_DBG(snic->shost, "Devrst: Returning from Device Reset : %s\n", @@ -2225,10 +2198,11 @@ snic_device_reset(struct scsi_cmnd *sc) * snic_issue_hba_reset : Queues FW Reset Request. */ static int -snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) +snic_issue_hba_reset(struct snic *snic) { struct snic_req_info *rqi = NULL; struct snic_host_req *req = NULL; + struct scsi_cmnd *reset_sc; spinlock_t *io_lock = NULL; DECLARE_COMPLETION_ONSTACK(wait); unsigned long flags; @@ -2237,30 +2211,31 @@ snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) rqi = snic_req_init(snic, 0); if (!rqi) { ret = -ENOMEM; - goto hba_rst_end; } - if (snic_cmd_tag(sc) == SCSI_NO_TAG) { - memset(scsi_cmd_priv(sc), 0, - sizeof(struct snic_internal_io_state)); - SNIC_HOST_INFO(snic->shost, "issu_hr:Host reset thru ioctl.\n"); - rqi->sc = sc; + reset_sc = scsi_get_internal_cmd(snic->shost_dev, + DMA_NONE, REQ_NOWAIT); + if (!reset_sc) { + ret = -EBUSY; + goto hba_rst_end_put; } - + memset(scsi_cmd_priv(reset_sc), 0, + sizeof(struct snic_internal_io_state)); + rqi->sc = reset_sc; req = rqi_to_req(rqi); - io_lock = snic_io_lock_hash(snic, sc); + io_lock = snic_io_lock_hash(snic, reset_sc); spin_lock_irqsave(io_lock, flags); - SNIC_BUG_ON(CMD_SP(sc) != NULL); - CMD_STATE(sc) = SNIC_IOREQ_PENDING; - CMD_SP(sc) = (char *) rqi; - CMD_FLAGS(sc) |= SNIC_IO_INITIALIZED; + SNIC_BUG_ON(CMD_SP(reset_sc) != NULL); + CMD_STATE(reset_sc) = SNIC_IOREQ_PENDING; + CMD_SP(reset_sc) = (char *) rqi; + CMD_FLAGS(reset_sc) |= SNIC_IO_INITIALIZED; snic->remove_wait = &wait; spin_unlock_irqrestore(io_lock, flags); /* Initialize Request */ - snic_io_hdr_enc(&req->hdr, SNIC_REQ_HBA_RESET, 0, snic_cmd_tag(sc), + snic_io_hdr_enc(&req->hdr, SNIC_REQ_HBA_RESET, 0, snic_cmd_tag(reset_sc), snic->config.hid, 0, (ulong) rqi); req->u.reset.flags = 0; @@ -2275,7 +2250,7 @@ snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) } spin_lock_irqsave(io_lock, flags); - CMD_FLAGS(sc) |= SNIC_HOST_RESET_ISSUED; + CMD_FLAGS(reset_sc) |= SNIC_HOST_RESET_ISSUED; spin_unlock_irqrestore(io_lock, flags); atomic64_inc(&snic->s_stats.reset.hba_resets); SNIC_HOST_INFO(snic->shost, "Queued HBA Reset Successfully.\n"); @@ -2292,13 +2267,14 @@ snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) spin_lock_irqsave(io_lock, flags); snic->remove_wait = NULL; - rqi = (struct snic_req_info *) CMD_SP(sc); - CMD_SP(sc) = NULL; + rqi = (struct snic_req_info *) CMD_SP(reset_sc); + CMD_SP(reset_sc) = NULL; spin_unlock_irqrestore(io_lock, flags); if (rqi) snic_req_free(snic, rqi); + scsi_put_internal_cmd(reset_sc); ret = 0; return ret; @@ -2306,10 +2282,13 @@ snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) hba_rst_err: spin_lock_irqsave(io_lock, flags); snic->remove_wait = NULL; - rqi = (struct snic_req_info *) CMD_SP(sc); - CMD_SP(sc) = NULL; + rqi = (struct snic_req_info *) CMD_SP(reset_sc); + CMD_SP(reset_sc) = NULL; spin_unlock_irqrestore(io_lock, flags); +hba_rst_end_put: + if (reset_sc) + scsi_put_internal_cmd(reset_sc); if (rqi) snic_req_free(snic, rqi); @@ -2322,7 +2301,7 @@ snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) } /* end of snic_issue_hba_reset */ int -snic_reset(struct Scsi_Host *shost, struct scsi_cmnd *sc) +snic_reset(struct Scsi_Host *shost) { struct snic *snic = shost_priv(shost); enum snic_state sv_state; @@ -2351,7 +2330,7 @@ snic_reset(struct Scsi_Host *shost, struct scsi_cmnd *sc) while (atomic_read(&snic->ios_inflight)) schedule_timeout(msecs_to_jiffies(1)); - ret = snic_issue_hba_reset(snic, sc); + ret = snic_issue_hba_reset(snic); if (ret) { SNIC_HOST_ERR(shost, "reset:Host Reset Failed w/ err %d.\n", @@ -2390,7 +2369,7 @@ snic_host_reset(struct scsi_cmnd *sc) sc, sc->cmnd[0], sc->request, snic_cmd_tag(sc), CMD_FLAGS(sc)); - ret = snic_reset(shost, sc); + ret = snic_reset(shost); SNIC_TRC(shost->host_no, snic_cmd_tag(sc), (ulong) sc, jiffies_to_msecs(jiffies - start_time), @@ -2432,7 +2411,7 @@ snic_cmpl_pending_tmreq(struct snic *snic, struct scsi_cmnd *sc) * snic_scsi_cleanup: Walks through tag map and releases the reqs */ static void -snic_scsi_cleanup(struct snic *snic, int ex_tag) +snic_scsi_cleanup(struct snic *snic) { struct snic_req_info *rqi = NULL; struct scsi_cmnd *sc = NULL; @@ -2444,19 +2423,9 @@ snic_scsi_cleanup(struct snic *snic, int ex_tag) SNIC_SCSI_DBG(snic->shost, "sc_clean: scsi cleanup.\n"); for (tag = 0; tag < snic->max_tag_id; tag++) { - /* Skip ex_tag */ - if (tag == ex_tag) - continue; - io_lock = snic_io_lock_tag(snic, tag); spin_lock_irqsave(io_lock, flags); sc = scsi_host_find_tag(snic->shost, tag); - if (!sc) { - spin_unlock_irqrestore(io_lock, flags); - - continue; - } - if (unlikely(snic_tmreq_pending(sc))) { /* * When FW Completes reset w/o sending completions @@ -2516,7 +2485,7 @@ snic_shutdown_scsi_cleanup(struct snic *snic) { SNIC_HOST_INFO(snic->shost, "Shutdown time SCSI Cleanup.\n"); - snic_scsi_cleanup(snic, SCSI_NO_TAG); + snic_scsi_cleanup(snic); } /* end of snic_shutdown_scsi_cleanup */ /* From patchwork Mon Feb 22 13:23:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386502 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 217F1C433E0 for ; Mon, 22 Feb 2021 13:30:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C4F6764E27 for ; Mon, 22 Feb 2021 13:30:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230526AbhBVN3l (ORCPT ); Mon, 22 Feb 2021 08:29:41 -0500 Received: from mx2.suse.de ([195.135.220.15]:47796 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231556AbhBVN1k (ORCPT ); Mon, 22 Feb 2021 08:27:40 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id CD12AAFEF; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 10/31] snic: use tagset iter for traversing commands Date: Mon, 22 Feb 2021 14:23:44 +0100 Message-Id: <20210222132405.91369-11-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Use the tagset iter to traverse active commands during device and hba reset. Signed-off-by: Hannes Reinecke --- drivers/scsi/snic/snic_scsi.c | 366 +++++++++++++++++----------------- 1 file changed, 187 insertions(+), 179 deletions(-) diff --git a/drivers/scsi/snic/snic_scsi.c b/drivers/scsi/snic/snic_scsi.c index f5aca883b693..16502633287a 100644 --- a/drivers/scsi/snic/snic_scsi.c +++ b/drivers/scsi/snic/snic_scsi.c @@ -1641,90 +1641,97 @@ snic_abort_cmd(struct scsi_cmnd *sc) return ret; } +struct snic_cmd_pending_iter_data { + struct snic *snic; + struct scsi_device *sdev; + int ret; +}; - -static int -snic_is_abts_pending(struct snic *snic, struct scsi_cmnd *lr_sc) +static bool +snic_is_abts_pending_iter(struct scsi_cmnd *sc, void *data, bool reserved) { + struct snic_cmd_pending_iter_data *iter_data = data; struct snic_req_info *rqi = NULL; - struct scsi_cmnd *sc = NULL; - struct scsi_device *lr_sdev = NULL; spinlock_t *io_lock = NULL; - u32 tag; unsigned long flags; - if (lr_sc) - lr_sdev = lr_sc->device; + if (reserved) + return true; - /* walk through the tag map, an dcheck if IOs are still pending in fw*/ - for (tag = 0; tag < snic->max_tag_id; tag++) { - io_lock = snic_io_lock_tag(snic, tag); - - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(snic->shost, tag); - - if (!sc || (lr_sc && (sc->device != lr_sdev || sc == lr_sc))) { - spin_unlock_irqrestore(io_lock, flags); + if (iter_data->sdev && iter_data->sdev != sc->device) + return true; - continue; - } + io_lock = snic_io_lock_hash(iter_data->snic, sc); + spin_lock_irqsave(io_lock, flags); - rqi = (struct snic_req_info *) CMD_SP(sc); - if (!rqi) { - spin_unlock_irqrestore(io_lock, flags); + rqi = (struct snic_req_info *) CMD_SP(sc); + if (!rqi) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } - continue; - } + /* + * Found IO that is still pending w/ firmware and belongs to + * the LUN that is under reset, if lr_sc != NULL + */ + SNIC_SCSI_DBG(iter_data->snic->shost, "Found IO in %s on LUN\n", + snic_ioreq_state_to_str(CMD_STATE(sc))); - /* - * Found IO that is still pending w/ firmware and belongs to - * the LUN that is under reset, if lr_sc != NULL - */ - SNIC_SCSI_DBG(snic->shost, "Found IO in %s on LUN\n", - snic_ioreq_state_to_str(CMD_STATE(sc))); + if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) + iter_data->ret = 1; + spin_unlock_irqrestore(io_lock, flags); - if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) { - spin_unlock_irqrestore(io_lock, flags); + return true; +} - return 1; - } +static int +snic_is_abts_pending(struct snic *snic, struct scsi_device *lr_sdev) +{ + struct snic_cmd_pending_iter_data iter_data = { + .snic = snic, + .sdev = lr_sdev, + .ret = 0, + }; - spin_unlock_irqrestore(io_lock, flags); - } + /* walk through the tag map, an dcheck if IOs are still pending in fw*/ + scsi_host_busy_iter(snic->shost, + snic_is_abts_pending_iter, &iter_data); - return 0; + return iter_data.ret; } /* end of snic_is_abts_pending */ -static int -snic_dr_clean_single_req(struct snic *snic, - u32 tag, - struct scsi_device *lr_sdev) +static bool +snic_dr_clean_single_req(struct scsi_cmnd *sc, void *data, bool reserved) { struct snic_req_info *rqi = NULL; struct snic_tgt *tgt = NULL; - struct scsi_cmnd *sc = NULL; spinlock_t *io_lock = NULL; u32 sv_state = 0, tmf = 0; DECLARE_COMPLETION_ONSTACK(tm_done); unsigned long flags; int ret = 0; + struct snic_cmd_pending_iter_data *iter_data = data; + struct snic *snic = iter_data->snic; - io_lock = snic_io_lock_tag(snic, tag); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(snic->shost, tag); + if (reserved) + return true; - /* Ignore Cmd that don't belong to Lun Reset device */ - if (!sc || sc->device != lr_sdev) - goto skip_clean; + if (sc->device != iter_data->sdev) + return true; + io_lock = snic_io_lock_hash(snic, sc); + spin_lock_irqsave(io_lock, flags); rqi = (struct snic_req_info *) CMD_SP(sc); - - if (!rqi) - goto skip_clean; + if (!rqi) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } - if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) - goto skip_clean; + if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } if ((CMD_FLAGS(sc) & SNIC_DEVICE_RESET) && @@ -1733,8 +1740,8 @@ snic_dr_clean_single_req(struct snic *snic, SNIC_SCSI_DBG(snic->shost, "clean_single_req: devrst is not pending sc 0x%p\n", sc); - - goto skip_clean; + spin_unlock_irqrestore(io_lock, flags); + return true; } SNIC_SCSI_DBG(snic->shost, @@ -1777,7 +1784,7 @@ snic_dr_clean_single_req(struct snic *snic, if (ret) { SNIC_HOST_ERR(snic->shost, "clean_single_req_err:sc %p, tag %d abt failed. tm_tag %d flags 0x%llx\n", - sc, tag, rqi->tm_tag, CMD_FLAGS(sc)); + sc, snic_cmd_tag(sc), rqi->tm_tag, CMD_FLAGS(sc)); spin_lock_irqsave(io_lock, flags); rqi = (struct snic_req_info *) CMD_SP(sc); @@ -1788,8 +1795,9 @@ snic_dr_clean_single_req(struct snic *snic, if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) CMD_STATE(sc) = sv_state; - ret = 1; - goto skip_clean; + iter_data->ret = 1; + spin_unlock_irqrestore(io_lock, flags); + return false; } spin_lock_irqsave(io_lock, flags); @@ -1806,7 +1814,8 @@ snic_dr_clean_single_req(struct snic *snic, rqi = (struct snic_req_info *) CMD_SP(sc); if (!rqi) { CMD_FLAGS(sc) |= SNIC_IO_ABTS_TERM_REQ_NULL; - goto skip_clean; + spin_unlock_irqrestore(io_lock, flags); + return true;; } rqi->abts_done = NULL; @@ -1814,14 +1823,13 @@ snic_dr_clean_single_req(struct snic *snic, if (CMD_ABTS_STATUS(sc) == SNIC_INVALID_CODE) { SNIC_HOST_ERR(snic->shost, "clean_single_req_err:sc %p tag %d abt still pending w/ fw, tm_tag %d flags 0x%llx\n", - sc, tag, rqi->tm_tag, CMD_FLAGS(sc)); + sc, snic_cmd_tag(sc), rqi->tm_tag, CMD_FLAGS(sc)); CMD_FLAGS(sc) |= SNIC_IO_ABTS_TERM_DONE; - ret = 1; - - goto skip_clean; + iter_data->ret = 1; + spin_unlock_irqrestore(io_lock, flags); + return false; } - CMD_STATE(sc) = SNIC_IOREQ_ABTS_COMPLETE; CMD_SP(sc) = NULL; spin_unlock_irqrestore(io_lock, flags); @@ -1831,39 +1839,31 @@ snic_dr_clean_single_req(struct snic *snic, sc->result = (DID_ERROR << 16); sc->scsi_done(sc); - ret = 0; - - return ret; - -skip_clean: - spin_unlock_irqrestore(io_lock, flags); - - return ret; + return true; } /* end of snic_dr_clean_single_req */ static int -snic_dr_clean_pending_req(struct snic *snic, struct scsi_cmnd *lr_sc) +snic_dr_clean_pending_req(struct snic *snic, struct scsi_device *lr_sdev) { - struct scsi_device *lr_sdev = lr_sc->device; - u32 tag = 0; int ret = FAILED; + struct snic_cmd_pending_iter_data iter_data = { + .snic = snic, + .sdev = lr_sdev, + .ret = 0, + }; - for (tag = 0; tag < snic->max_tag_id; tag++) { - if (tag == snic_cmd_tag(lr_sc)) - continue; + scsi_host_busy_iter(snic->shost, + snic_dr_clean_single_req, &iter_data); + if (iter_data.ret) { + SNIC_HOST_ERR(snic->shost, "clean_err = %d\n", iter_data.ret); - ret = snic_dr_clean_single_req(snic, tag, lr_sdev); - if (ret) { - SNIC_HOST_ERR(snic->shost, "clean_err:tag = %d\n", tag); - - goto clean_err; - } + goto clean_err; } schedule_timeout(msecs_to_jiffies(100)); /* Walk through all the cmds and check abts status. */ - if (snic_is_abts_pending(snic, lr_sc)) { + if (snic_is_abts_pending(snic, lr_sdev)) { ret = FAILED; goto clean_err; @@ -1950,7 +1950,7 @@ snic_dr_finish(struct snic *snic, struct scsi_cmnd *sc) * succeeds. */ - ret = snic_dr_clean_pending_req(snic, sc); + ret = snic_dr_clean_pending_req(snic, sc->device); if (ret) { spin_lock_irqsave(io_lock, flags); SNIC_SCSI_DBG(snic->shost, @@ -2407,77 +2407,79 @@ snic_cmpl_pending_tmreq(struct snic *snic, struct scsi_cmnd *sc) complete(rqi->abts_done); } -/* - * snic_scsi_cleanup: Walks through tag map and releases the reqs - */ -static void -snic_scsi_cleanup(struct snic *snic) +static bool +snic_scsi_cleanup_iter(struct scsi_cmnd *sc, void *data, bool rsvd) { + struct snic *snic = data; struct snic_req_info *rqi = NULL; - struct scsi_cmnd *sc = NULL; spinlock_t *io_lock = NULL; unsigned long flags; - int tag; + int tag = snic_cmd_tag(sc); u64 st_time = 0; - SNIC_SCSI_DBG(snic->shost, "sc_clean: scsi cleanup.\n"); - - for (tag = 0; tag < snic->max_tag_id; tag++) { - io_lock = snic_io_lock_tag(snic, tag); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(snic->shost, tag); - if (unlikely(snic_tmreq_pending(sc))) { - /* - * When FW Completes reset w/o sending completions - * for outstanding ios. - */ - snic_cmpl_pending_tmreq(snic, sc); - spin_unlock_irqrestore(io_lock, flags); - - continue; - } - - rqi = (struct snic_req_info *) CMD_SP(sc); - if (!rqi) { - spin_unlock_irqrestore(io_lock, flags); + io_lock = snic_io_lock_hash(snic, sc); + spin_lock_irqsave(io_lock, flags); + if (unlikely(snic_tmreq_pending(sc))) { + /* + * When FW Completes reset w/o sending completions + * for outstanding ios. + */ + snic_cmpl_pending_tmreq(snic, sc); + spin_unlock_irqrestore(io_lock, flags); - goto cleanup; - } + return true; + } + rqi = (struct snic_req_info *) CMD_SP(sc); + if (!rqi) { + spin_unlock_irqrestore(io_lock, flags); + goto cleanup; + } - SNIC_SCSI_DBG(snic->shost, - "sc_clean: sc %p, rqi %p, tag %d flags 0x%llx\n", - sc, rqi, tag, CMD_FLAGS(sc)); + SNIC_SCSI_DBG(snic->shost, + "sc_clean: sc %p, rqi %p, tag %d flags 0x%llx\n", + sc, rqi, tag, CMD_FLAGS(sc)); - CMD_SP(sc) = NULL; - CMD_FLAGS(sc) |= SNIC_SCSI_CLEANUP; - spin_unlock_irqrestore(io_lock, flags); - st_time = rqi->start_time; + CMD_SP(sc) = NULL; + CMD_FLAGS(sc) |= SNIC_SCSI_CLEANUP; + spin_unlock_irqrestore(io_lock, flags); + st_time = rqi->start_time; - SNIC_HOST_INFO(snic->shost, - "sc_clean: Releasing rqi %p : flags 0x%llx\n", - rqi, CMD_FLAGS(sc)); + SNIC_HOST_INFO(snic->shost, + "sc_clean: Releasing rqi %p : flags 0x%llx\n", + rqi, CMD_FLAGS(sc)); - snic_release_req_buf(snic, rqi, sc); + snic_release_req_buf(snic, rqi, sc); cleanup: - sc->result = DID_TRANSPORT_DISRUPTED << 16; - SNIC_HOST_INFO(snic->shost, - "sc_clean: DID_TRANSPORT_DISRUPTED for sc %p, Tag %d flags 0x%llx rqi %p duration %u msecs\n", - sc, sc->request->tag, CMD_FLAGS(sc), rqi, - jiffies_to_msecs(jiffies - st_time)); + sc->result = DID_TRANSPORT_DISRUPTED << 16; + SNIC_HOST_INFO(snic->shost, + "sc_clean: DID_TRANSPORT_DISRUPTED for sc %p, Tag %d flags 0x%llx rqi %p duration %u msecs\n", + sc, tag, CMD_FLAGS(sc), rqi, + jiffies_to_msecs(jiffies - st_time)); - /* Update IO stats */ - snic_stats_update_io_cmpl(&snic->s_stats); + /* Update IO stats */ + snic_stats_update_io_cmpl(&snic->s_stats); - if (sc->scsi_done) { - SNIC_TRC(snic->shost->host_no, tag, (ulong) sc, - jiffies_to_msecs(jiffies - st_time), 0, - SNIC_TRC_CMD(sc), - SNIC_TRC_CMD_STATE_FLAGS(sc)); + if (sc->scsi_done) { + SNIC_TRC(snic->shost->host_no, tag, (ulong) sc, + jiffies_to_msecs(jiffies - st_time), 0, + SNIC_TRC_CMD(sc), + SNIC_TRC_CMD_STATE_FLAGS(sc)); - sc->scsi_done(sc); - } + sc->scsi_done(sc); } + return true; +} + +/* + * snic_scsi_cleanup: Walks through tag map and releases the reqs + */ +static void +snic_scsi_cleanup(struct snic *snic) +{ + SNIC_SCSI_DBG(snic->shost, "sc_clean: scsi cleanup.\n"); + + scsi_host_busy_iter(snic->shost, snic_scsi_cleanup_iter, snic); } /* end of snic_scsi_cleanup */ void @@ -2574,6 +2576,40 @@ snic_internal_abort_io(struct snic *snic, struct scsi_cmnd *sc, int tmf) return ret; } /* end of snic_internal_abort_io */ +struct snic_tgt_scsi_abort_io_iter_data { + struct snic *snic; + struct snic_tgt *tgt; + int tmf; + int abt_cnt; +}; + +static bool +snic_tgt_scsi_abort_io_iter(struct scsi_cmnd *sc, void *data, bool reserved) +{ + struct snic_tgt_scsi_abort_io_iter_data *iter_data = data; + struct snic_tgt *sc_tgt = NULL; + int ret; + + if (reserved) + return true; + + sc_tgt = starget_to_tgt(scsi_target(sc->device)); + if (sc_tgt != iter_data->tgt) + return true; + + ret = snic_internal_abort_io(iter_data->snic, sc, iter_data->tmf); + if (ret < 0) { + SNIC_HOST_ERR(iter_data->snic->shost, + "tgt_abt_io: Tag %x, Failed w err = %d\n", + snic_cmd_tag(sc), ret); + return true; + } + + if (ret == SUCCESS) + iter_data->abt_cnt++; + return true; +} + /* * snic_tgt_scsi_abort_io : called by snic_tgt_del */ @@ -2581,11 +2617,10 @@ int snic_tgt_scsi_abort_io(struct snic_tgt *tgt) { struct snic *snic = NULL; - struct scsi_cmnd *sc = NULL; - struct snic_tgt *sc_tgt = NULL; - spinlock_t *io_lock = NULL; - unsigned long flags; - int ret = 0, tag, abt_cnt = 0, tmf = 0; + struct snic_tgt_scsi_abort_io_iter_data iter_data = { + .tgt = tgt, + .abt_cnt = 0, + }; if (!tgt) return -1; @@ -2594,43 +2629,16 @@ snic_tgt_scsi_abort_io(struct snic_tgt *tgt) SNIC_SCSI_DBG(snic->shost, "tgt_abt_io: Cleaning Pending IOs.\n"); if (tgt->tdata.typ == SNIC_TGT_DAS) - tmf = SNIC_ITMF_ABTS_TASK; + iter_data.tmf = SNIC_ITMF_ABTS_TASK; else - tmf = SNIC_ITMF_ABTS_TASK_TERM; - - for (tag = 0; tag < snic->max_tag_id; tag++) { - io_lock = snic_io_lock_tag(snic, tag); - - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(snic->shost, tag); - if (!sc) { - spin_unlock_irqrestore(io_lock, flags); - - continue; - } + iter_data.tmf = SNIC_ITMF_ABTS_TASK_TERM; + iter_data.snic = snic; - sc_tgt = starget_to_tgt(scsi_target(sc->device)); - if (sc_tgt != tgt) { - spin_unlock_irqrestore(io_lock, flags); - - continue; - } - spin_unlock_irqrestore(io_lock, flags); - - ret = snic_internal_abort_io(snic, sc, tmf); - if (ret < 0) { - SNIC_HOST_ERR(snic->shost, - "tgt_abt_io: Tag %x, Failed w err = %d\n", - tag, ret); - - continue; - } - - if (ret == SUCCESS) - abt_cnt++; - } + scsi_host_busy_iter(snic->shost, + snic_tgt_scsi_abort_io_iter, &iter_data); - SNIC_SCSI_DBG(snic->shost, "tgt_abt_io: abt_cnt = %d\n", abt_cnt); + SNIC_SCSI_DBG(snic->shost, "tgt_abt_io: abt_cnt = %d\n", + iter_data.abt_cnt); return 0; } /* end of snic_tgt_scsi_abort_io */ From patchwork Mon Feb 22 13:23:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386027 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4CDF6C433E0 for ; Mon, 22 Feb 2021 13:30:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EB0F064E27 for ; Mon, 22 Feb 2021 13:30:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231863AbhBVN3s (ORCPT ); Mon, 22 Feb 2021 08:29:48 -0500 Received: from mx2.suse.de ([195.135.220.15]:47844 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231555AbhBVN1l (ORCPT ); Mon, 22 Feb 2021 08:27:41 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id D3B63AFF0; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 11/31] snic: check for started requests in snic_hba_reset_cmpl_handler() Date: Mon, 22 Feb 2021 14:23:45 +0100 Message-Id: <20210222132405.91369-12-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org snic_hba_reset_cmpl_handler() is using scsi_host_find_tag() to map id to a scsi command. However, as per discussion on the mailinglist scsi_host_find_tag() might return a non-started request, so we need to check the returned command with blk_mq_request_started() to avoid the function tripping over a non-initialized command. Signed-off-by: Hannes Reinecke --- drivers/scsi/snic/snic_scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/snic/snic_scsi.c b/drivers/scsi/snic/snic_scsi.c index 16502633287a..904eba42727c 100644 --- a/drivers/scsi/snic/snic_scsi.c +++ b/drivers/scsi/snic/snic_scsi.c @@ -1020,7 +1020,7 @@ snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) } sc = scsi_host_find_tag(snic->shost, cmnd_id); - if (!sc) { + if (!sc || !blk_mq_request_started(sc->request)) { atomic64_inc(&snic->s_stats.io.sc_null); SNIC_HOST_ERR(snic->shost, "reset_cmpl: sc is NULL - Hdr Stat %s Tag 0x%x\n", From patchwork Mon Feb 22 13:23:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386500 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B4BAC433DB for ; Mon, 22 Feb 2021 13:30:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DEBA464E27 for ; Mon, 22 Feb 2021 13:30:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231889AbhBVNa2 (ORCPT ); Mon, 22 Feb 2021 08:30:28 -0500 Received: from mx2.suse.de ([195.135.220.15]:47794 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230340AbhBVN2Q (ORCPT ); Mon, 22 Feb 2021 08:28:16 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id DF3F7AFF5; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 12/31] scsi: implement reserved command handling Date: Mon, 22 Feb 2021 14:23:46 +0100 Message-Id: <20210222132405.91369-13-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Quite some drivers are using management commands internally, which typically use the same hardware tag pool (ie they are being allocated from the same hardware resources) as the 'normal' I/O commands. These commands are set aside before allocating the block-mq tag bitmap, so they'll never show up as busy in the tag map. The block-layer, OTOH, already has 'reserved_tags' to handle precisely this situation. So this patch adds a new field 'nr_reserved_cmds' to the SCSI host template to instruct the block layer to set aside a tag space for these management commands by using reserved tags. Signed-off-by: Hannes Reinecke --- drivers/scsi/hosts.c | 3 +++ drivers/scsi/scsi_lib.c | 10 +++++++++- include/scsi/scsi_host.h | 22 +++++++++++++++++++++- 3 files changed, 33 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 2f162603876f..661ed7696562 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -469,6 +469,9 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) if (sht->virt_boundary_mask) shost->virt_boundary_mask = sht->virt_boundary_mask; + if (sht->nr_reserved_cmds) + shost->nr_reserved_cmds = sht->nr_reserved_cmds; + device_initialize(&shost->shost_gendev); dev_set_name(&shost->shost_gendev, "host%d", shost->host_no); shost->shost_gendev.bus = &scsi_bus_type; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 5cb464972682..90af1ab6f4f5 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1916,7 +1916,9 @@ int scsi_mq_setup_tags(struct Scsi_Host *shost) else tag_set->ops = &scsi_mq_ops_no_commit; tag_set->nr_hw_queues = shost->nr_hw_queues ? : 1; - tag_set->queue_depth = shost->can_queue; + tag_set->queue_depth = + shost->can_queue + shost->nr_reserved_cmds; + tag_set->reserved_tags = shost->nr_reserved_cmds; tag_set->cmd_size = cmd_size; tag_set->numa_node = NUMA_NO_NODE; tag_set->flags = BLK_MQ_F_SHOULD_MERGE; @@ -1941,6 +1943,9 @@ void scsi_mq_destroy_tags(struct Scsi_Host *shost) * @op_flags: request allocation flags * * Allocates a SCSI command for internal LLDD use. + * If 'nr_reserved_commands' is spectified by the host the + * command will be allocated from the reserved tag pool; + * otherwise the normal tag pool will be used. */ struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, enum dma_data_direction data_direction, int op_flags) @@ -1950,6 +1955,9 @@ struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, blk_mq_req_flags_t flags = 0; unsigned int op = REQ_INTERNAL | op_flags; + if (sdev->host->nr_reserved_cmds) + flags = BLK_MQ_REQ_RESERVED; + op |= (data_direction == DMA_TO_DEVICE) ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN; rq = blk_mq_alloc_request(sdev->request_queue, op, flags); diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index ecc2d9dcfdf3..e826658bcecf 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -348,10 +348,19 @@ struct scsi_host_template { /* * This determines if we will use a non-interrupt driven * or an interrupt driven scheme. It is set to the maximum number - * of simultaneous commands a single hw queue in HBA will accept. + * of simultaneous commands a single hw queue in HBA will accept + * excluding internal commands. */ int can_queue; + /* + * This determines how many commands the HBA will set aside + * for internal commands. This number will be added to + * @can_queue to calcumate the maximum number of simultaneous + * commands sent to the host. + */ + int nr_reserved_cmds; + /* * In many instances, especially where disconnect / reconnect are * supported, our host also has an ID on the SCSI bus. If this is @@ -599,6 +608,11 @@ struct Scsi_Host { unsigned short max_cmd_len; int this_id; + + /* + * Number of commands this host can handle at the same time. + * This excludes reserved commands as specified by nr_reserved_cmds. + */ int can_queue; short cmd_per_lun; short unsigned int sg_tablesize; @@ -616,6 +630,12 @@ struct Scsi_Host { * the total queue depth is can_queue. */ unsigned nr_hw_queues; + + /* + * Number of reserved commands to allocate, if any. + */ + unsigned nr_reserved_cmds; + unsigned active_mode:2; unsigned unchecked_isa_dma:1; From patchwork Mon Feb 22 13:23:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386499 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D4D4FC433E6 for ; Mon, 22 Feb 2021 13:31:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8528B64DD0 for ; Mon, 22 Feb 2021 13:31:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229995AbhBVNam (ORCPT ); Mon, 22 Feb 2021 08:30:42 -0500 Received: from mx2.suse.de ([195.135.220.15]:47812 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231237AbhBVN2R (ORCPT ); Mon, 22 Feb 2021 08:28:17 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 1D942B001; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke , Don Brace Subject: [PATCH 13/31] hpsa: move hpsa_hba_inquiry after scsi_add_host() Date: Mon, 22 Feb 2021 14:23:47 +0100 Message-Id: <20210222132405.91369-14-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Move hpsa_hba_inquiry to after scsi_add_host() so that the host is fully initialized. Signed-off-by: Hannes Reinecke Tested-by: Don Brace --- drivers/scsi/hpsa.c | 37 +++++++++++++++++++------------------ 1 file changed, 19 insertions(+), 18 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 337d3aa91945..1603982dd5e8 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -5851,6 +5851,22 @@ static int hpsa_scsi_host_alloc(struct ctlr_info *h) return 0; } +static void hpsa_hba_inquiry(struct ctlr_info *h) +{ + int rc; + +#define HBA_INQUIRY_BYTE_COUNT 64 + h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); + if (!h->hba_inquiry_data) + return; + rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, + h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); + if (rc != 0) { + kfree(h->hba_inquiry_data); + h->hba_inquiry_data = NULL; + } +} + static int hpsa_scsi_add_host(struct ctlr_info *h) { int rv; @@ -5860,6 +5876,9 @@ static int hpsa_scsi_add_host(struct ctlr_info *h) dev_err(&h->pdev->dev, "scsi_add_host failed\n"); return rv; } + + hpsa_hba_inquiry(h); + scsi_scan_host(h->scsi_host); return 0; } @@ -7912,22 +7931,6 @@ static int hpsa_pci_init(struct ctlr_info *h) return err; } -static void hpsa_hba_inquiry(struct ctlr_info *h) -{ - int rc; - -#define HBA_INQUIRY_BYTE_COUNT 64 - h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); - if (!h->hba_inquiry_data) - return; - rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, - h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); - if (rc != 0) { - kfree(h->hba_inquiry_data); - h->hba_inquiry_data = NULL; - } -} - static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id) { int rc, i; @@ -8832,8 +8835,6 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) /* Turn the interrupts on so we can service requests */ h->access.set_intr_mask(h, HPSA_INTR_ON); - hpsa_hba_inquiry(h); - h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL); if (!h->lastlogicals) dev_info(&h->pdev->dev, From patchwork Mon Feb 22 13:23:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386498 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 391C5C433E0 for ; Mon, 22 Feb 2021 13:31:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C371164E40 for ; Mon, 22 Feb 2021 13:31:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231936AbhBVNbB (ORCPT ); Mon, 22 Feb 2021 08:31:01 -0500 Received: from mx2.suse.de ([195.135.220.15]:47844 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231270AbhBVN2S (ORCPT ); Mon, 22 Feb 2021 08:28:18 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 2C484B00D; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke , Don Brace Subject: [PATCH 14/31] hpsa: use reserved commands Date: Mon, 22 Feb 2021 14:23:48 +0100 Message-Id: <20210222132405.91369-15-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Enable the use of reserved commands, and drop the hand-crafted command allocation. Signed-off-by: Hannes Reinecke Tested-by: Don Brace --- drivers/scsi/hpsa.c | 204 +++++++++++++++++--------------------------- drivers/scsi/hpsa.h | 3 +- 2 files changed, 78 insertions(+), 129 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 1603982dd5e8..506cd9faa7b9 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -245,10 +245,6 @@ static struct hpsa_scsi_dev_t *hpsa_find_device_by_sas_rphy(struct ctlr_info *h, struct sas_rphy *rphy); -#define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy) -static const struct scsi_cmnd hpsa_cmd_busy; -#define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle) -static const struct scsi_cmnd hpsa_cmd_idle; static int number_of_controllers; static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id); @@ -266,7 +262,7 @@ static int hpsa_compat_ioctl(struct scsi_device *dev, unsigned int cmd, #endif static void cmd_free(struct ctlr_info *h, struct CommandList *c); -static struct CommandList *cmd_alloc(struct ctlr_info *h); +static struct CommandList *cmd_alloc(struct ctlr_info *h, u8 direction); static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c); static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, struct scsi_cmnd *scmd); @@ -347,7 +343,7 @@ static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) static inline bool hpsa_is_cmd_idle(struct CommandList *c) { - return c->scsi_cmd == SCSI_CMD_IDLE; + return c->scsi_cmd == NULL; } /* extract sense key, asc, and ascq from sense data. -1 means invalid. */ @@ -2459,7 +2455,12 @@ static void hpsa_cmd_resolve_events(struct ctlr_info *h, * this command has completed. Then, check to see if the handler is * waiting for this command, and, if so, wake it. */ - c->scsi_cmd = SCSI_CMD_IDLE; + if (c->scsi_cmd && c->cmd_type == CMD_IOCTL_PEND) { + struct scsi_cmnd *scmd = c->scsi_cmd; + + scsi_put_internal_cmd(scmd); + } + c->scsi_cmd = NULL; mb(); /* Declare command idle before checking for pending events. */ if (dev) { atomic_dec(&dev->commands_outstanding); @@ -3001,7 +3002,7 @@ static int hpsa_do_receive_diagnostic(struct ctlr_info *h, u8 *scsi3addr, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); if (fill_cmd(c, RECEIVE_DIAGNOSTIC, h, buf, bufsize, page, scsi3addr, TYPE_CMD)) { rc = -1; @@ -3053,7 +3054,7 @@ static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD)) { @@ -3081,7 +3082,7 @@ static int hpsa_send_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_NONE); c->device = dev; /* fill_cmd can't fail here, no data buffer to map. */ @@ -3307,7 +3308,7 @@ static int hpsa_get_raid_map(struct ctlr_info *h, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map, sizeof(this_device->raid_map), 0, @@ -3349,7 +3350,7 @@ static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize, 0, RAID_CTLR_LUNID, TYPE_CMD); @@ -3380,7 +3381,7 @@ static int hpsa_bmic_id_controller(struct ctlr_info *h, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize, 0, RAID_CTLR_LUNID, TYPE_CMD); @@ -3409,7 +3410,7 @@ static int hpsa_bmic_id_physical_device(struct ctlr_info *h, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize, 0, RAID_CTLR_LUNID, TYPE_CMD); if (rc) @@ -3486,7 +3487,7 @@ static void hpsa_get_enclosure_info(struct ctlr_info *h, goto out; } - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); rc = fill_cmd(c, BMIC_SENSE_STORAGE_BOX_PARAMS, h, bssbp, sizeof(*bssbp), 0, RAID_CTLR_LUNID, TYPE_CMD); @@ -3742,7 +3743,7 @@ static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, unsigned char scsi3addr[8]; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); /* address the controller */ memset(scsi3addr, 0, sizeof(scsi3addr)); @@ -3883,7 +3884,7 @@ static unsigned char hpsa_volume_offline(struct ctlr_info *h, #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02 - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_NONE); (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD); rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, @@ -5539,7 +5540,6 @@ static void hpsa_cmd_init(struct ctlr_info *h, int index, c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle); c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info)); c->h = h; - c->scsi_cmd = SCSI_CMD_IDLE; } static void hpsa_preinitialize_commands(struct ctlr_info *h) @@ -5834,12 +5834,12 @@ static int hpsa_scsi_host_alloc(struct ctlr_info *h) sh->io_port = 0; sh->n_io_port = 0; - sh->this_id = -1; sh->max_channel = 3; sh->max_cmd_len = MAX_COMMAND_SIZE; sh->max_lun = HPSA_MAX_LUN; sh->max_id = HPSA_MAX_LUN; sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS; + sh->nr_reserved_cmds = HPSA_NRESERVED_CMDS; sh->cmd_per_lun = sh->can_queue; sh->sg_tablesize = h->maxsgentries; sh->transportt = hpsa_sas_transport_template; @@ -5876,30 +5876,18 @@ static int hpsa_scsi_add_host(struct ctlr_info *h) dev_err(&h->pdev->dev, "scsi_add_host failed\n"); return rv; } - + h->raid_ctrl_sdev = scsi_get_host_dev(h->scsi_host); + if (!h->raid_ctrl_sdev) { + dev_err(&h->pdev->dev, + "allocate raid controller device failed\n"); + return -ENOMEM; + } hpsa_hba_inquiry(h); scsi_scan_host(h->scsi_host); return 0; } -/* - * The block layer has already gone to the trouble of picking out a unique, - * small-integer tag for this request. We use an offset from that value as - * an index to select our command block. (The offset allows us to reserve the - * low-numbered entries for our own uses.) - */ -static int hpsa_get_cmd_index(struct scsi_cmnd *scmd) -{ - int idx = scmd->request->tag; - - if (idx < 0) - return idx; - - /* Offset to leave space for internal cmds. */ - return idx += HPSA_NRESERVED_CMDS; -} - /* * Send a TEST_UNIT_READY command to the specified LUN using the specified * reply queue; returns zero if the unit is ready, and non-zero otherwise. @@ -5983,7 +5971,7 @@ static int wait_for_device_to_become_ready(struct ctlr_info *h, int rc = 0; struct CommandList *c; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_NONE); /* * If no specific reply queue was requested, then send the TUR @@ -6056,7 +6044,7 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) if (lockup_detected(h)) { snprintf(msg, sizeof(msg), "cmd %d RESET FAILED, lockup detected", - hpsa_get_cmd_index(scsicmd)); + scsicmd->request->tag); hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); rc = FAILED; goto return_reset_status; @@ -6066,7 +6054,7 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) if (detect_controller_lockup(h)) { snprintf(msg, sizeof(msg), "cmd %d RESET FAILED, new lockup detected", - hpsa_get_cmd_index(scsicmd)); + scsicmd->request->tag); hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); rc = FAILED; goto return_reset_status; @@ -6128,12 +6116,12 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, struct scsi_cmnd *scmd) { - int idx = hpsa_get_cmd_index(scmd); + int idx = scmd->request->tag; struct CommandList *c = h->cmd_pool + idx; - if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) { + if (idx < 0 || idx >= h->nr_cmds) { dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n", - idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1); + idx, 0, h->nr_cmds - 1); /* The index value comes from the block layer, so if it's out of * bounds, it's probably not our bug. */ @@ -6170,80 +6158,52 @@ static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c) * else to free it, because it is accessed by index. */ (void)atomic_dec(&c->refcount); + c->scsi_cmd = NULL; } -/* - * For operations that cannot sleep, a command block is allocated at init, - * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track - * which ones are free or in use. Lock must be held when calling this. - * cmd_free() is the complement. - * This function never gives up and returns NULL. If it hangs, - * another thread must call cmd_free() to free some tags. - */ - -static struct CommandList *cmd_alloc(struct ctlr_info *h) +static struct CommandList *cmd_alloc(struct ctlr_info *h, u8 direction) { + struct scsi_cmnd *scmd; struct CommandList *c; - int refcount, i; - int offset = 0; - - /* - * There is some *extremely* small but non-zero chance that that - * multiple threads could get in here, and one thread could - * be scanning through the list of bits looking for a free - * one, but the free ones are always behind him, and other - * threads sneak in behind him and eat them before he can - * get to them, so that while there is always a free one, a - * very unlucky thread might be starved anyway, never able to - * beat the other threads. In reality, this happens so - * infrequently as to be indistinguishable from never. - * - * Note that we start allocating commands before the SCSI host structure - * is initialized. Since the search starts at bit zero, this - * all works, since we have at least one command structure available; - * however, it means that the structures with the low indexes have to be - * reserved for driver-initiated requests, while requests from the block - * layer will use the higher indexes. - */ - - for (;;) { - i = find_next_zero_bit(h->cmd_pool_bits, - HPSA_NRESERVED_CMDS, - offset); - if (unlikely(i >= HPSA_NRESERVED_CMDS)) { - offset = 0; - continue; - } - c = h->cmd_pool + i; - refcount = atomic_inc_return(&c->refcount); - if (unlikely(refcount > 1)) { - cmd_free(h, c); /* already in use */ - offset = (i + 1) % HPSA_NRESERVED_CMDS; - continue; - } - set_bit(i & (BITS_PER_LONG - 1), - h->cmd_pool_bits + (i / BITS_PER_LONG)); - break; /* it's ours now. */ + int idx; + + scmd = scsi_get_internal_cmd(h->raid_ctrl_sdev, + (direction & XFER_WRITE) ? + DMA_TO_DEVICE : DMA_FROM_DEVICE, + REQ_NOWAIT); + if (!scmd) { + dev_warn(&h->pdev->dev, "failed to allocate reserved cmd\n"); + return NULL; + } + idx = scmd->request->tag; + c = cmd_tagged_alloc(h, scmd); + if (!c) { + dev_warn(&h->pdev->dev, "failed to allocate reserved cmd %u\n", + idx); + scsi_put_internal_cmd(scmd); + return NULL; } - hpsa_cmd_partial_init(h, i, c); + hpsa_cmd_partial_init(h, idx, c); + c->scsi_cmd = scmd; c->device = NULL; + c->cmd_type = CMD_IOCTL_PEND; + dev_dbg(&h->pdev->dev, "using reserved cmd %u\n", idx); return c; } -/* - * This is the complementary operation to cmd_alloc(). Note, however, in some - * corner cases it may also be used to free blocks allocated by - * cmd_tagged_alloc() in which case the ref-count decrement does the trick and - * the clear-bit is harmless. - */ static void cmd_free(struct ctlr_info *h, struct CommandList *c) { - if (atomic_dec_and_test(&c->refcount)) { - int i; + struct scsi_cmnd *scmd = c->scsi_cmd; - i = c - h->cmd_pool; - clear_bit(i & (BITS_PER_LONG - 1), - h->cmd_pool_bits + (i / BITS_PER_LONG)); + if (!scmd) { + dev_warn(&h->pdev->dev, "freeing idle cmd\n"); + return; + } + cmd_tagged_free(h, c); + if (c->cmd_type == CMD_IOCTL_PEND) { + dev_dbg(&h->pdev->dev, "returning reserved cmd %u\n", + scmd->request->tag); + scsi_put_internal_cmd(scmd); } } @@ -6410,11 +6370,8 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, memset(buff, 0, iocommand->buf_size); } } - c = cmd_alloc(h); + c = cmd_alloc(h, iocommand->Request.Type.Direction); - /* Fill in the command type */ - c->cmd_type = CMD_IOCTL_PEND; - c->scsi_cmd = SCSI_CMD_BUSY; /* Fill in Command Header */ c->Header.ReplyQueue = 0; /* unused in simple mode */ if (iocommand->buf_size > 0) { /* buffer to fill */ @@ -6527,10 +6484,8 @@ static int hpsa_big_passthru_ioctl(struct ctlr_info *h, data_ptr += sz; sg_used++; } - c = cmd_alloc(h); + c = cmd_alloc(h, ioc->Request.Type.Direction); - c->cmd_type = CMD_IOCTL_PEND; - c->scsi_cmd = SCSI_CMD_BUSY; c->Header.ReplyQueue = 0; c->Header.SGList = (u8) sg_used; c->Header.SGTotal = cpu_to_le16(sg_used); @@ -6661,7 +6616,7 @@ static void hpsa_send_host_reset(struct ctlr_info *h, u8 reset_type) { struct CommandList *c; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_NONE); /* fill_cmd can't fail here, no data buffer to map */ (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, @@ -6682,8 +6637,6 @@ static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, { enum dma_data_direction dir = DMA_NONE; - c->cmd_type = CMD_IOCTL_PEND; - c->scsi_cmd = SCSI_CMD_BUSY; c->Header.ReplyQueue = 0; if (buff != NULL && size > 0) { c->Header.SGList = 1; @@ -7995,8 +7948,6 @@ static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id) static void hpsa_free_cmd_pool(struct ctlr_info *h) { - kfree(h->cmd_pool_bits); - h->cmd_pool_bits = NULL; if (h->cmd_pool) { dma_free_coherent(&h->pdev->dev, h->nr_cmds * sizeof(struct CommandList), @@ -8017,17 +7968,13 @@ static void hpsa_free_cmd_pool(struct ctlr_info *h) static int hpsa_alloc_cmd_pool(struct ctlr_info *h) { - h->cmd_pool_bits = kcalloc(DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG), - sizeof(unsigned long), - GFP_KERNEL); h->cmd_pool = dma_alloc_coherent(&h->pdev->dev, h->nr_cmds * sizeof(*h->cmd_pool), &h->cmd_pool_dhandle, GFP_KERNEL); h->errinfo_pool = dma_alloc_coherent(&h->pdev->dev, h->nr_cmds * sizeof(*h->errinfo_pool), &h->errinfo_pool_dhandle, GFP_KERNEL); - if ((h->cmd_pool_bits == NULL) - || (h->cmd_pool == NULL) + if ((h->cmd_pool == NULL) || (h->errinfo_pool == NULL)) { dev_err(&h->pdev->dev, "out of memory in %s", __func__); goto clean_up; @@ -8908,7 +8855,7 @@ static void hpsa_flush_cache(struct ctlr_info *h) if (!flush_buf) return; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_NONE); if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, RAID_CTLR_LUNID, TYPE_CMD)) { @@ -8943,7 +8890,7 @@ static void hpsa_disable_rld_caching(struct ctlr_info *h) if (!options) return; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); /* first, get the current diag options settings */ if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0, @@ -8993,11 +8940,10 @@ static void __hpsa_shutdown(struct pci_dev *pdev) struct ctlr_info *h; h = pci_get_drvdata(pdev); - /* Turn board interrupts off and send the flush cache command - * sendcmd will turn off interrupt, and send the flush... - * To write all data in the battery backed cache to disks + /* + * Turn board interrupts off; + * flush cache command has already been sent. */ - hpsa_flush_cache(h); h->access.set_intr_mask(h, HPSA_INTR_OFF); hpsa_free_irqs(h); /* init_one 4 */ hpsa_disable_interrupt_mode(h); /* pci_init 2 */ @@ -9005,6 +8951,7 @@ static void __hpsa_shutdown(struct pci_dev *pdev) static void hpsa_shutdown(struct pci_dev *pdev) { + hpsa_flush_cache(pci_get_drvdata(pdev)); __hpsa_shutdown(pdev); pci_disable_device(pdev); } @@ -9049,6 +8996,7 @@ static void hpsa_remove_one(struct pci_dev *pdev) * when multipath is enabled. There can be SYNCHRONIZE CACHE * operations which cannot complete and will hang the system. */ + hpsa_flush_cache(h); if (h->scsi_host) scsi_remove_host(h->scsi_host); /* init_one 8 */ /* includes hpsa_free_irqs - init_one 4 */ diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h index 99b0750850b2..93e9fd9b931c 100644 --- a/drivers/scsi/hpsa.h +++ b/drivers/scsi/hpsa.h @@ -206,7 +206,6 @@ struct ctlr_info { dma_addr_t ioaccel2_cmd_pool_dhandle; struct ErrorInfo *errinfo_pool; dma_addr_t errinfo_pool_dhandle; - unsigned long *cmd_pool_bits; int scan_finished; u8 scan_waiting : 1; spinlock_t scan_lock; @@ -216,6 +215,8 @@ struct ctlr_info { spinlock_t devlock; /* to protect hba[ctlr]->dev[]; */ int ndevices; /* number of used elements in .dev[] array. */ struct hpsa_scsi_dev_t *dev[HPSA_MAX_DEVICES]; + struct scsi_device *raid_ctrl_sdev; + /* * Performant mode tables. */ From patchwork Mon Feb 22 13:23:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386503 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C616CC43381 for ; Mon, 22 Feb 2021 13:29:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7E41164E76 for ; Mon, 22 Feb 2021 13:29:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231209AbhBVN3V (ORCPT ); Mon, 22 Feb 2021 08:29:21 -0500 Received: from mx2.suse.de ([195.135.220.15]:47842 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231364AbhBVN1l (ORCPT ); Mon, 22 Feb 2021 08:27:41 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id DA7D1AFF3; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 15/31] hpsa: use scsi_host_busy_iter() to traverse outstanding commands Date: Mon, 22 Feb 2021 14:23:49 +0100 Message-Id: <20210222132405.91369-16-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Replace all hand-crafted command iterations with scsi_host_busy_iter() calls. Signed-off-by: Hannes Reinecke --- drivers/scsi/hpsa.c | 117 +++++++++++++++++++++++++------------------- 1 file changed, 67 insertions(+), 50 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 506cd9faa7b9..c0f46f11789b 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -1817,30 +1817,26 @@ static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) return rc; } -static int hpsa_find_outstanding_commands_for_dev(struct ctlr_info *h, - struct hpsa_scsi_dev_t *dev) -{ - int i; - int count = 0; - - for (i = 0; i < h->nr_cmds; i++) { - struct CommandList *c = h->cmd_pool + i; - int refcount = atomic_inc_return(&c->refcount); - - if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, - dev->scsi3addr)) { - unsigned long flags; +struct hpsa_command_iter_data { + struct ctlr_info *h; + struct hpsa_scsi_dev_t *dev; + unsigned char *scsi3addr; + int count; +}; - spin_lock_irqsave(&h->lock, flags); /* Implied MB */ - if (!hpsa_is_cmd_idle(c)) - ++count; - spin_unlock_irqrestore(&h->lock, flags); - } +static bool hpsa_find_outstanding_commands_iter(struct scsi_cmnd *sc, + void *data, bool reserved) +{ + struct hpsa_command_iter_data *iter_data = data; + struct ctlr_info *h = iter_data->h; + struct hpsa_scsi_dev_t *dev = iter_data->dev; + struct CommandList *c = h->cmd_pool + sc->request->tag; - cmd_free(h, c); + if (hpsa_cmd_dev_match(h, c, dev, dev->scsi3addr)) { + iter_data->count++; + return false; } - - return count; + return true; } #define NUM_WAIT 20 @@ -1850,13 +1846,20 @@ static void hpsa_wait_for_outstanding_commands_for_dev(struct ctlr_info *h, int cmds = 0; int waits = 0; int num_wait = NUM_WAIT; + struct hpsa_command_iter_data iter_data = { + .h = h, + .dev = device, + }; if (device->external) num_wait = HPSA_EH_PTRAID_TIMEOUT; while (1) { - cmds = hpsa_find_outstanding_commands_for_dev(h, device); - if (cmds == 0) + iter_data.count = 0; + scsi_host_busy_iter(h->scsi_host, + hpsa_find_outstanding_commands_iter, + &iter_data); + if (iter_data.count == 0) break; if (++waits > num_wait) break; @@ -8145,27 +8148,34 @@ static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h) kfree(h); /* init_one 1 */ } +static bool fail_all_outstanding_cmds_iter(struct scsi_cmnd *sc, void *data, + bool reserved) +{ + struct hpsa_command_iter_data *iter_data = data; + struct ctlr_info *h = iter_data->h; + struct CommandList *c = h->cmd_pool + sc->request->tag; + + c->err_info->CommandStatus = CMD_CTLR_LOCKUP; + finish_cmd(c); + atomic_dec(&h->commands_outstanding); + iter_data->count++; + + return true; +} + /* Called when controller lockup detected. */ static void fail_all_outstanding_cmds(struct ctlr_info *h) { - int i, refcount; - struct CommandList *c; - int failcount = 0; + struct hpsa_command_iter_data iter_data = { + .h = h, + .count = 0, + }; flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */ - for (i = 0; i < h->nr_cmds; i++) { - c = h->cmd_pool + i; - refcount = atomic_inc_return(&c->refcount); - if (refcount > 1) { - c->err_info->CommandStatus = CMD_CTLR_LOCKUP; - finish_cmd(c); - atomic_dec(&h->commands_outstanding); - failcount++; - } - cmd_free(h, c); - } + scsi_host_busy_iter(h->scsi_host, + fail_all_outstanding_cmds_iter, &iter_data); dev_warn(&h->pdev->dev, - "failed %d commands in fail_all\n", failcount); + "failed %d commands in fail_all\n", iter_data.count); } static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value) @@ -9464,22 +9474,29 @@ static int is_accelerated_cmd(struct CommandList *c) return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2; } +static bool hpsa_drain_accel_commands_iter(struct scsi_cmnd *sc, void *data, + bool reserved) +{ + struct hpsa_command_iter_data *iter_data = data; + struct ctlr_info *h = iter_data->h; + struct CommandList *c = h->cmd_pool + sc->request->tag; + + iter_data->count += is_accelerated_cmd(c); + return true; +} + static void hpsa_drain_accel_commands(struct ctlr_info *h) { - struct CommandList *c = NULL; - int i, accel_cmds_out; - int refcount; + struct hpsa_command_iter_data iter_data = { + .h = h, + }; do { /* wait for all outstanding ioaccel commands to drain out */ - accel_cmds_out = 0; - for (i = 0; i < h->nr_cmds; i++) { - c = h->cmd_pool + i; - refcount = atomic_inc_return(&c->refcount); - if (refcount > 1) /* Command is allocated */ - accel_cmds_out += is_accelerated_cmd(c); - cmd_free(h, c); - } - if (accel_cmds_out <= 0) + iter_data.count = 0; + scsi_host_busy_iter(h->scsi_host, + hpsa_drain_accel_commands_iter, + &iter_data); + if (iter_data.count <= 0) break; msleep(100); } while (1); From patchwork Mon Feb 22 13:23:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386029 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4BEA6C433E0 for ; Mon, 22 Feb 2021 13:29:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E045F64E27 for ; Mon, 22 Feb 2021 13:29:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230454AbhBVN25 (ORCPT ); Mon, 22 Feb 2021 08:28:57 -0500 Received: from mx2.suse.de ([195.135.220.15]:47950 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231672AbhBVN1r (ORCPT ); Mon, 22 Feb 2021 08:27:47 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id E8B79AFF7; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke , Hannes Reinecke Subject: [PATCH 16/31] hpsa: drop refcount field from CommandList Date: Mon, 22 Feb 2021 14:23:50 +0100 Message-Id: <20210222132405.91369-17-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Field is now unused, so drop it. Signed-off-by: Hannes Reinecke --- drivers/scsi/hpsa.c | 12 ++---------- drivers/scsi/hpsa_cmd.h | 1 - 2 files changed, 2 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index c0f46f11789b..38f6a7589653 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -5530,8 +5530,8 @@ static void hpsa_cmd_init(struct ctlr_info *h, int index, { dma_addr_t cmd_dma_handle, err_dma_handle; - /* Zero out all of commandlist except the last field, refcount */ - memset(c, 0, offsetof(struct CommandList, refcount)); + /* Zero out all of commandlist */ + memset(c, 0, sizeof(struct CommandList)); c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT)); cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c); c->err_info = h->errinfo_pool + index; @@ -5553,7 +5553,6 @@ static void hpsa_preinitialize_commands(struct ctlr_info *h) struct CommandList *c = h->cmd_pool + i; hpsa_cmd_init(h, i, c); - atomic_set(&c->refcount, 0); } } @@ -6148,19 +6147,12 @@ static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, return NULL; } - atomic_inc(&c->refcount); - hpsa_cmd_partial_init(h, idx, c); return c; } static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c) { - /* - * Release our reference to the block. We don't need to do anything - * else to free it, because it is accessed by index. - */ - (void)atomic_dec(&c->refcount); c->scsi_cmd = NULL; } diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h index 46df2e3ff89b..aaccb520b858 100644 --- a/drivers/scsi/hpsa_cmd.h +++ b/drivers/scsi/hpsa_cmd.h @@ -450,7 +450,6 @@ struct CommandList { int abort_pending; struct hpsa_scsi_dev_t *device; - atomic_t refcount; /* Must be last to avoid memset in hpsa_cmd_init() */ } __aligned(COMMANDLIST_ALIGNMENT); /* Max S/G elements in I/O accelerator command */ From patchwork Mon Feb 22 13:23:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386501 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EF293C433DB for ; Mon, 22 Feb 2021 13:30:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AC17B64E27 for ; Mon, 22 Feb 2021 13:30:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231887AbhBVN36 (ORCPT ); Mon, 22 Feb 2021 08:29:58 -0500 Received: from mx2.suse.de ([195.135.220.15]:47786 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231185AbhBVN2Q (ORCPT ); Mon, 22 Feb 2021 08:28:16 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 13CBBB000; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke , Hannes Reinecke Subject: [PATCH 17/31] aacraid: move scsi_add_host() Date: Mon, 22 Feb 2021 14:23:51 +0100 Message-Id: <20210222132405.91369-18-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Move the call to scsi_add_host() so that the Scsi_Host structure is initialized before any I/O is sent. Signed-off-by: Hannes Reinecke --- drivers/scsi/aacraid/linit.c | 31 +++++++++++++++---------------- 1 file changed, 15 insertions(+), 16 deletions(-) diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index 3168915adaa7..e5d89b309c3a 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -1639,6 +1639,9 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) shost->irq = pdev->irq; shost->unique_id = unique_id; shost->max_cmd_len = 16; + shost->max_id = MAXIMUM_NUM_CONTAINERS; + shost->max_lun = AAC_MAX_LUN; + shost->sg_tablesize = HBA_MAX_SG_SEPARATE; if (aac_cfg_major == AAC_CHARDEV_NEEDS_REINIT) aac_init_char(); @@ -1677,7 +1680,7 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) aac->base_size = AAC_MIN_FOOTPRINT_SIZE; if ((*aac_drivers[index].init)(aac)) { error = -ENODEV; - goto out_unmap; + goto out_free_fibs; } if (aac->sync_mode) { @@ -1703,9 +1706,15 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) printk(KERN_ERR "aacraid: Unable to create command thread.\n"); error = PTR_ERR(aac->thread); aac->thread = NULL; - goto out_deinit; + goto out_unmap; } + pci_set_drvdata(pdev, shost); + + error = scsi_add_host(shost, &pdev->dev); + if (error) + goto out_deinit; + aac->maximum_num_channels = aac_drivers[index].channels; error = aac_get_adapter_info(aac); if (error < 0) @@ -1764,18 +1773,6 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) if (!aac->sa_firmware && aac_drivers[index].quirks & AAC_QUIRK_SRC) aac_intr_normal(aac, 0, 2, 0, NULL); - /* - * dmb - we may need to move the setting of these parms somewhere else once - * we get a fib that can report the actual numbers - */ - shost->max_lun = AAC_MAX_LUN; - - pci_set_drvdata(pdev, shost); - - error = scsi_add_host(shost, &pdev->dev); - if (error) - goto out_deinit; - aac_scan_host(aac); pci_enable_pcie_error_reporting(pdev); @@ -1792,10 +1789,12 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) aac->comm_addr, aac->comm_phys); kfree(aac->queues); aac_adapter_ioremap(aac, 0); - kfree(aac->fibs); kfree(aac->fsa_dev); + out_free_fibs: + kfree(aac->fibs); out_free_host: scsi_host_put(shost); + pci_set_drvdata(pdev, NULL); out_disable_pdev: pci_disable_device(pdev); out: @@ -1903,9 +1902,9 @@ static void aac_remove_one(struct pci_dev *pdev) struct aac_dev *aac = (struct aac_dev *)shost->hostdata; aac_cancel_rescan_worker(aac); - scsi_remove_host(shost); __aac_shutdown(aac); + scsi_remove_host(shost); aac_fib_map_free(aac); dma_free_coherent(&aac->pdev->dev, aac->comm_size, aac->comm_addr, aac->comm_phys); From patchwork Mon Feb 22 13:23:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386504 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5A197C433E6 for ; Mon, 22 Feb 2021 13:28:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1095564E27 for ; Mon, 22 Feb 2021 13:28:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230206AbhBVN2p (ORCPT ); Mon, 22 Feb 2021 08:28:45 -0500 Received: from mx2.suse.de ([195.135.220.15]:47948 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231691AbhBVN1s (ORCPT ); Mon, 22 Feb 2021 08:27:48 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id DE992AFF4; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 18/31] aacraid: store target id in host_scribble Date: Mon, 22 Feb 2021 14:23:52 +0100 Message-Id: <20210222132405.91369-19-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The probe_container mechanism requires a target id to be present, even if the device itself isn't present (yet). As we're now allocating internal commands the target id of the device is immutable, so store the requested target id in the host_scribble field. Signed-off-by: Hannes Reinecke --- drivers/scsi/aacraid/aachba.c | 53 +++++++++++++++++++++++++---------- 1 file changed, 38 insertions(+), 15 deletions(-) diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c index 4ca5e13a26a6..97967e4e904c 100644 --- a/drivers/scsi/aacraid/aachba.c +++ b/drivers/scsi/aacraid/aachba.c @@ -609,9 +609,11 @@ static int aac_get_container_name(struct scsi_cmnd * scsicmd) static int aac_probe_container_callback2(struct scsi_cmnd * scsicmd) { - struct fsa_dev_info *fsa_dev_ptr = ((struct aac_dev *)(scsicmd->device->host->hostdata))->fsa_dev; + struct aac_dev *dev = (struct aac_dev *)(scsicmd->device->host->hostdata); + struct fsa_dev_info *fsa_dev_ptr = dev->fsa_dev; - if ((fsa_dev_ptr[scmd_id(scsicmd)].valid & 1)) + if (scmd_id(scsicmd) < dev->maximum_num_containers && + (fsa_dev_ptr[scmd_id(scsicmd)].valid & 1)) return aac_scsi_cmd(scsicmd); scsicmd->result = DID_NO_CONNECT << 16; @@ -624,6 +626,7 @@ static void _aac_probe_container2(void * context, struct fib * fibptr) struct fsa_dev_info *fsa_dev_ptr; int (*callback)(struct scsi_cmnd *); struct scsi_cmnd * scsicmd = (struct scsi_cmnd *)context; + int cid = scmd_id(scsicmd); int i; @@ -631,12 +634,15 @@ static void _aac_probe_container2(void * context, struct fib * fibptr) return; scsicmd->SCp.Status = 0; + if (scsicmd->host_scribble) + cid = *(int *)scsicmd->host_scribble; + fsa_dev_ptr = fibptr->dev->fsa_dev; - if (fsa_dev_ptr) { + if (fsa_dev_ptr && cid < fibptr->dev->maximum_num_containers) { struct aac_mount * dresp = (struct aac_mount *) fib_data(fibptr); __le32 sup_options2; - fsa_dev_ptr += scmd_id(scsicmd); + fsa_dev_ptr += cid; sup_options2 = fibptr->dev->supplement_adapter_info.supported_options2; @@ -671,7 +677,6 @@ static void _aac_probe_container2(void * context, struct fib * fibptr) scsicmd->SCp.Status = le32_to_cpu(dresp->count); } aac_fib_complete(fibptr); - aac_fib_free(fibptr); callback = (int (*)(struct scsi_cmnd *))(scsicmd->SCp.ptr); scsicmd->SCp.ptr = NULL; (*callback)(scsicmd); @@ -683,6 +688,7 @@ static void _aac_probe_container1(void * context, struct fib * fibptr) struct scsi_cmnd * scsicmd; struct aac_mount * dresp; struct aac_query_mount *dinfo; + int cid; int status; dresp = (struct aac_mount *) fib_data(fibptr); @@ -695,10 +701,15 @@ static void _aac_probe_container1(void * context, struct fib * fibptr) } } scsicmd = (struct scsi_cmnd *) context; - if (!aac_valid_context(scsicmd, fibptr)) return; - + cid = scmd_id(scsicmd); + if (scsicmd->host_scribble) + cid = *(int *)scsicmd->host_scribble; + if (cid >= fibptr->dev->maximum_num_containers) { + _aac_probe_container2(context, fibptr); + return; + } aac_fib_init(fibptr); dinfo = (struct aac_query_mount *)fib_data(fibptr); @@ -709,7 +720,7 @@ static void _aac_probe_container1(void * context, struct fib * fibptr) else dinfo->command = cpu_to_le32(VM_NameServe64); - dinfo->count = cpu_to_le32(scmd_id(scsicmd)); + dinfo->count = cpu_to_le32(cid); dinfo->type = cpu_to_le32(FT_FILESYS); scsicmd->SCp.phase = AAC_OWNER_FIRMWARE; @@ -732,10 +743,20 @@ static void _aac_probe_container1(void * context, struct fib * fibptr) static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(struct scsi_cmnd *)) { + struct aac_dev * dev; struct fib * fibptr; int status = -ENOMEM; + int cid = scmd_id(scsicmd); - if ((fibptr = aac_fib_alloc((struct aac_dev *)scsicmd->device->host->hostdata))) { + dev = (struct aac_dev *)scsicmd->device->host->hostdata; + if (scsicmd->host_scribble) { + cid = *(int *)scsicmd->host_scribble; + if (cid > dev->maximum_num_containers) { + status = -ENODEV; + goto out_status; + } + } + if ((fibptr = aac_fib_alloc(dev))) { struct aac_query_mount *dinfo; aac_fib_init(fibptr); @@ -748,7 +769,7 @@ static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(stru else dinfo->command = cpu_to_le32(VM_NameServe); - dinfo->count = cpu_to_le32(scmd_id(scsicmd)); + dinfo->count = cpu_to_le32(cid); dinfo->type = cpu_to_le32(FT_FILESYS); scsicmd->SCp.ptr = (char *)callback; scsicmd->SCp.phase = AAC_OWNER_FIRMWARE; @@ -772,10 +793,11 @@ static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(stru aac_fib_free(fibptr); } } +out_status: if (status < 0) { - struct fsa_dev_info *fsa_dev_ptr = ((struct aac_dev *)(scsicmd->device->host->hostdata))->fsa_dev; - if (fsa_dev_ptr) { - fsa_dev_ptr += scmd_id(scsicmd); + struct fsa_dev_info *fsa_dev_ptr = dev->fsa_dev; + if (fsa_dev_ptr && cid < dev->maximum_num_containers) { + fsa_dev_ptr += cid; if ((fsa_dev_ptr->valid & 1) == 0) { fsa_dev_ptr->valid = 0; return (*callback)(scsicmd); @@ -794,7 +816,7 @@ static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(stru */ static int aac_probe_container_callback1(struct scsi_cmnd * scsicmd) { - scsicmd->device = NULL; + scsicmd->host_scribble = NULL; return 0; } @@ -815,6 +837,7 @@ int aac_probe_container(struct aac_dev *dev, int cid) return -ENOMEM; } scsicmd->scsi_done = aac_probe_container_scsi_done; + scsicmd->host_scribble = (unsigned char *)&cid; scsicmd->device = scsidev; scsidev->sdev_state = 0; @@ -822,7 +845,7 @@ int aac_probe_container(struct aac_dev *dev, int cid) scsidev->host = dev->scsi_host_ptr; if (_aac_probe_container(scsicmd, aac_probe_container_callback1) == 0) - while (scsicmd->device == scsidev) + while (scsicmd->host_scribble == (unsigned char *)&cid) schedule(); kfree(scsidev); status = scsicmd->SCp.Status; From patchwork Mon Feb 22 13:23:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386020 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF883C433E0 for ; Mon, 22 Feb 2021 13:32:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B47964E32 for ; Mon, 22 Feb 2021 13:32:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231795AbhBVNcb (ORCPT ); Mon, 22 Feb 2021 08:32:31 -0500 Received: from mx2.suse.de ([195.135.220.15]:48664 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231262AbhBVN2n (ORCPT ); Mon, 22 Feb 2021 08:28:43 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 009FBAFF9; Mon, 22 Feb 2021 13:24:15 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 19/31] aacraid: use scsi_get_internal_cmd() Date: Mon, 22 Feb 2021 14:23:53 +0100 Message-Id: <20210222132405.91369-20-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Hannes Reinecke Use scsi_get_internal_cmd() to allocate internal commands. And move scsi_add_host() such that it's allocated early enough to provide tags for the initialisation commands. Signed-off-by: Hannes Reinecke --- drivers/scsi/aacraid/aachba.c | 92 +++++++++++++++------------------ drivers/scsi/aacraid/aacraid.h | 10 ++-- drivers/scsi/aacraid/commctrl.c | 25 +++++---- drivers/scsi/aacraid/comminit.c | 2 +- drivers/scsi/aacraid/commsup.c | 60 ++++++++++----------- drivers/scsi/aacraid/dpcsup.c | 2 +- drivers/scsi/aacraid/linit.c | 13 +++-- 7 files changed, 102 insertions(+), 102 deletions(-) diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c index 97967e4e904c..8bcf76ed4239 100644 --- a/drivers/scsi/aacraid/aachba.c +++ b/drivers/scsi/aacraid/aachba.c @@ -360,7 +360,7 @@ int aac_get_config_status(struct aac_dev *dev, int commit_flag) int status = 0; struct fib * fibptr; - if (!(fibptr = aac_fib_alloc(dev))) + if (!(fibptr = aac_fib_alloc(dev, DMA_FROM_DEVICE))) return -ENOMEM; aac_fib_init(fibptr); @@ -457,7 +457,7 @@ int aac_get_containers(struct aac_dev *dev) struct aac_get_container_count_resp *dresp; int maximum_num_containers = MAXIMUM_NUM_CONTAINERS; - if (!(fibptr = aac_fib_alloc(dev))) + if (!(fibptr = aac_fib_alloc(dev, DMA_FROM_DEVICE))) return -ENOMEM; aac_fib_init(fibptr); @@ -741,61 +741,56 @@ static void _aac_probe_container1(void * context, struct fib * fibptr) } } -static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(struct scsi_cmnd *)) +static int _aac_probe_container(struct fib * fibptr, int (*callback)(struct scsi_cmnd *)) { + struct scsi_cmnd *scsicmd = fibptr->scmd; struct aac_dev * dev; - struct fib * fibptr; int status = -ENOMEM; + struct aac_query_mount *dinfo; int cid = scmd_id(scsicmd); dev = (struct aac_dev *)scsicmd->device->host->hostdata; if (scsicmd->host_scribble) { - cid = *(int *)scsicmd->host_scribble; - if (cid > dev->maximum_num_containers) { + cid = *(unsigned int *)scsicmd->host_scribble; + if (cid >= dev->maximum_num_containers) { status = -ENODEV; goto out_status; } } - if ((fibptr = aac_fib_alloc(dev))) { - struct aac_query_mount *dinfo; - aac_fib_init(fibptr); + aac_fib_init(fibptr); - dinfo = (struct aac_query_mount *)fib_data(fibptr); + dinfo = (struct aac_query_mount *)fib_data(fibptr); - if (fibptr->dev->supplement_adapter_info.supported_options2 & - AAC_OPTION_VARIABLE_BLOCK_SIZE) - dinfo->command = cpu_to_le32(VM_NameServeAllBlk); - else - dinfo->command = cpu_to_le32(VM_NameServe); + if (fibptr->dev->supplement_adapter_info.supported_options2 & + AAC_OPTION_VARIABLE_BLOCK_SIZE) + dinfo->command = cpu_to_le32(VM_NameServeAllBlk); + else + dinfo->command = cpu_to_le32(VM_NameServe); - dinfo->count = cpu_to_le32(cid); - dinfo->type = cpu_to_le32(FT_FILESYS); - scsicmd->SCp.ptr = (char *)callback; - scsicmd->SCp.phase = AAC_OWNER_FIRMWARE; + dinfo->count = cpu_to_le32(cid); + dinfo->type = cpu_to_le32(FT_FILESYS); + scsicmd->SCp.ptr = (char *)callback; + scsicmd->SCp.phase = AAC_OWNER_FIRMWARE; - status = aac_fib_send(ContainerCommand, + status = aac_fib_send(ContainerCommand, fibptr, sizeof(struct aac_query_mount), FsaNormal, 0, 1, _aac_probe_container1, (void *) scsicmd); - /* - * Check that the command queued to the controller - */ - if (status == -EINPROGRESS) - return 0; - - if (status < 0) { - scsicmd->SCp.ptr = NULL; - aac_fib_complete(fibptr); - aac_fib_free(fibptr); - } - } + /* + * Check that the command queued to the controller + */ + if (status == -EINPROGRESS) + return 0; out_status: if (status < 0) { struct fsa_dev_info *fsa_dev_ptr = dev->fsa_dev; + + scsicmd->SCp.ptr = NULL; + aac_fib_complete(fibptr); if (fsa_dev_ptr && cid < dev->maximum_num_containers) { fsa_dev_ptr += cid; if ((fsa_dev_ptr->valid & 1) == 0) { @@ -827,29 +822,23 @@ static void aac_probe_container_scsi_done(struct scsi_cmnd *scsi_cmnd) int aac_probe_container(struct aac_dev *dev, int cid) { - struct scsi_cmnd *scsicmd = kmalloc(sizeof(*scsicmd), GFP_KERNEL); - struct scsi_device *scsidev = kmalloc(sizeof(*scsidev), GFP_KERNEL); + struct fib *fibptr; + struct scsi_cmnd *scsicmd; int status; - if (!scsicmd || !scsidev) { - kfree(scsicmd); - kfree(scsidev); + fibptr = aac_fib_alloc(dev, DMA_FROM_DEVICE); + if (!fibptr) return -ENOMEM; - } + + scsicmd = fibptr->scmd; scsicmd->scsi_done = aac_probe_container_scsi_done; scsicmd->host_scribble = (unsigned char *)&cid; - scsicmd->device = scsidev; - scsidev->sdev_state = 0; - scsidev->id = cid; - scsidev->host = dev->scsi_host_ptr; - - if (_aac_probe_container(scsicmd, aac_probe_container_callback1) == 0) + if (_aac_probe_container(fibptr, aac_probe_container_callback1) == 0) while (scsicmd->host_scribble == (unsigned char *)&cid) schedule(); - kfree(scsidev); status = scsicmd->SCp.Status; - kfree(scsicmd); + aac_fib_free(fibptr); return status; } @@ -1694,7 +1683,7 @@ static int aac_send_safw_bmic_cmd(struct aac_dev *dev, return 0; /* allocate FIB */ - fibptr = aac_fib_alloc(dev); + fibptr = aac_fib_alloc(dev, DMA_BIDIRECTIONAL); if (!fibptr) return -ENOMEM; @@ -2059,7 +2048,7 @@ int aac_get_adapter_info(struct aac_dev* dev) struct aac_bus_info *command; struct aac_bus_info_response *bus_info; - if (!(fibptr = aac_fib_alloc(dev))) + if (!(fibptr = aac_fib_alloc(dev, DMA_FROM_DEVICE))) return -ENOMEM; aac_fib_init(fibptr); @@ -2106,7 +2095,7 @@ int aac_get_adapter_info(struct aac_dev* dev) if (rcode >= 0) memcpy(&dev->supplement_adapter_info, sinfo, sizeof(*sinfo)); if (rcode == -ERESTARTSYS) { - fibptr = aac_fib_alloc(dev); + fibptr = aac_fib_alloc(dev, DMA_FROM_DEVICE); if (!fibptr) return -ENOMEM; } @@ -2816,6 +2805,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd) if (((fsa_dev_ptr[cid].valid & 1) == 0) || (fsa_dev_ptr[cid].sense_data.sense_key == NOT_READY)) { + struct fib * fibptr; + switch (scsicmd->cmnd[0]) { case SERVICE_ACTION_IN_16: if (!(dev->raw_io_interface) || @@ -2828,7 +2819,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd) case TEST_UNIT_READY: if (dev->in_reset) return -1; - return _aac_probe_container(scsicmd, + fibptr = aac_fib_alloc_tag(dev, scsicmd); + return _aac_probe_container(fibptr, aac_probe_container_callback2); default: break; diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h index e3e4ecbea726..3cd7f33497d8 100644 --- a/drivers/scsi/aacraid/aacraid.h +++ b/drivers/scsi/aacraid/aacraid.h @@ -1291,13 +1291,16 @@ struct fsa_dev_info { }; struct fib { - void *next; /* this is used by the allocator */ s16 type; s16 size; /* * The Adapter that this I/O is destined for. */ struct aac_dev *dev; + /* + * The associated scsi command + */ + struct scsi_cmnd *scmd; /* * This is the event the sendfib routine will wait on if the * caller did not pass one and this is synch io. @@ -1552,7 +1555,6 @@ struct aac_dev */ struct fib *fibs; - struct fib *free_fib; spinlock_t fib_lock; struct mutex ioctl_mutex; @@ -1597,6 +1599,7 @@ struct aac_dev size_t comm_size; struct Scsi_Host *scsi_host_ptr; + struct scsi_device *scsi_host_dev; int maximum_num_containers; int maximum_num_physicals; int maximum_num_channels; @@ -1729,6 +1732,7 @@ struct aac_dev #define FIB_CONTEXT_FLAG_NATIVE_HBA_TMF (0x00000020) #define FIB_CONTEXT_FLAG_SCSI_CMD (0x00000040) #define FIB_CONTEXT_FLAG_EH_RESET (0x00000080) +#define FIB_CONTEXT_FLAG_INTERNAL_CMD (0x00000100) /* * Define the command values @@ -2686,7 +2690,7 @@ void aac_free_irq(struct aac_dev *dev); int aac_setup_safw_adapter(struct aac_dev *dev); const char *aac_driverinfo(struct Scsi_Host *); void aac_fib_vector_assign(struct aac_dev *dev); -struct fib *aac_fib_alloc(struct aac_dev *dev); +struct fib *aac_fib_alloc(struct aac_dev *dev, int direction); struct fib *aac_fib_alloc_tag(struct aac_dev *dev, struct scsi_cmnd *scmd); int aac_fib_setup(struct aac_dev *dev); void aac_fib_map_free(struct aac_dev *dev); diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c index 1b1da162f5f6..65c6079cfa94 100644 --- a/drivers/scsi/aacraid/commctrl.c +++ b/drivers/scsi/aacraid/commctrl.c @@ -55,7 +55,7 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user *arg) if (dev->in_reset) { return -EBUSY; } - fibptr = aac_fib_alloc(dev); + fibptr = aac_fib_alloc(dev, DMA_BIDIRECTIONAL); if(fibptr == NULL) { return -ENOMEM; } @@ -478,7 +478,7 @@ static int check_revision(struct aac_dev *dev, void __user *arg) */ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) { - struct fib* srbfib; + struct fib* srbfib = NULL; int status; struct aac_srb *srbcmd = NULL; struct aac_hba_cmd_req *hbacmd = NULL; @@ -509,12 +509,6 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n")); return -EPERM; } - /* - * Allocate and initialize a Fib then setup a SRB command - */ - if (!(srbfib = aac_fib_alloc(dev))) { - return -ENOMEM; - } memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */ if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){ @@ -561,6 +555,15 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) rcode = -EINVAL; goto cleanup; } + + /* + * Allocate and initialize a Fib + */ + if (!(srbfib = aac_fib_alloc(dev, data_dir))) { + rcode = -ENOMEM; + goto cleanup; + } + actual_fibsize = sizeof(struct aac_srb) - sizeof(struct sgentry) + ((user_srbcmd->sg.count & 0xff) * sizeof(struct sgentry)); actual_fibsize64 = actual_fibsize + (user_srbcmd->sg.count & 0xff) * @@ -988,8 +991,10 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) if (rcode != -ERESTARTSYS) { for (i = 0; i <= sg_indx; i++) kfree(sg_list[i]); - aac_fib_complete(srbfib); - aac_fib_free(srbfib); + if (srbfib) { + aac_fib_complete(srbfib); + aac_fib_free(srbfib); + } } return rcode; diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c index 355b16f0b145..0d5be76891b0 100644 --- a/drivers/scsi/aacraid/comminit.c +++ b/drivers/scsi/aacraid/comminit.c @@ -327,7 +327,7 @@ int aac_send_shutdown(struct aac_dev * dev) aac_wait_for_io_completion(dev); - fibctx = aac_fib_alloc(dev); + fibctx = aac_fib_alloc(dev, DMA_NONE); if (!fibctx) return -ENOMEM; aac_fib_init(fibctx); diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c index 0ae0d1fa2b50..96c8226309ba 100644 --- a/drivers/scsi/aacraid/commsup.c +++ b/drivers/scsi/aacraid/commsup.c @@ -173,7 +173,6 @@ int aac_fib_setup(struct aac_dev * dev) fibptr->dev = dev; fibptr->hw_fib_va = hw_fib; fibptr->data = (void *) fibptr->hw_fib_va->data; - fibptr->next = fibptr+1; /* Forward chain the fibs */ init_completion(&fibptr->event_wait); spin_lock_init(&fibptr->event_lock); hw_fib->header.XferState = cpu_to_le32(0xffffffff); @@ -200,14 +199,6 @@ int aac_fib_setup(struct aac_dev * dev) */ aac_fib_vector_assign(dev); - /* - * Add the fib chain to the free list - */ - dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL; - /* - * Set 8 fibs aside for management tools - */ - dev->free_fib = &dev->fibs[dev->scsi_host_ptr->can_queue]; return 0; } @@ -233,7 +224,7 @@ struct fib *aac_fib_alloc_tag(struct aac_dev *dev, struct scsi_cmnd *scmd) fibptr->type = FSAFS_NTC_FIB_CONTEXT; fibptr->callback_data = NULL; fibptr->callback = NULL; - fibptr->flags = 0; + fibptr->scmd = scmd; return fibptr; } @@ -241,36 +232,30 @@ struct fib *aac_fib_alloc_tag(struct aac_dev *dev, struct scsi_cmnd *scmd) /** * aac_fib_alloc - allocate a fib * @dev: Adapter to allocate the fib for + * @direction: DMA data direction * * Allocate a fib from the adapter fib pool. If the pool is empty we * return NULL. */ -struct fib *aac_fib_alloc(struct aac_dev *dev) +struct fib *aac_fib_alloc(struct aac_dev *dev, int direction) { - struct fib * fibptr; + struct scsi_cmnd *scmd; + struct fib * fibptr = NULL; unsigned long flags; + spin_lock_irqsave(&dev->fib_lock, flags); - fibptr = dev->free_fib; - if(!fibptr){ - spin_unlock_irqrestore(&dev->fib_lock, flags); - return fibptr; + scmd = scsi_get_internal_cmd(dev->scsi_host_dev, direction, + REQ_NOWAIT); + if (scmd) { + fibptr = aac_fib_alloc_tag(dev, scmd); + fibptr->flags |= FIB_CONTEXT_FLAG_INTERNAL_CMD; } - dev->free_fib = fibptr->next; spin_unlock_irqrestore(&dev->fib_lock, flags); - /* - * Set the proper node type code and node byte size - */ - fibptr->type = FSAFS_NTC_FIB_CONTEXT; + if (!fibptr) + return NULL; + fibptr->size = sizeof(struct fib); - /* - * Null out fields that depend on being zero at the start of - * each I/O - */ - fibptr->hw_fib_va->header.XferState = 0; - fibptr->flags = 0; - fibptr->callback = NULL; - fibptr->callback_data = NULL; return fibptr; } @@ -298,8 +283,15 @@ void aac_fib_free(struct fib *fibptr) (void*)fibptr, le32_to_cpu(fibptr->hw_fib_va->header.XferState)); } - fibptr->next = fibptr->dev->free_fib; - fibptr->dev->free_fib = fibptr; + if (fibptr->scmd) { + struct scsi_cmnd *scmd = fibptr->scmd; + + fibptr->scmd = NULL; + if (fibptr->flags & FIB_CONTEXT_FLAG_INTERNAL_CMD) { + scsi_put_internal_cmd(scmd); + fibptr->flags &= ~FIB_CONTEXT_FLAG_INTERNAL_CMD; + } + } spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags); } @@ -1663,7 +1655,7 @@ int aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) retval = unblock_retval; if ((forced < 2) && (retval == -ENODEV)) { /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */ - struct fib * fibctx = aac_fib_alloc(aac); + struct fib * fibctx = aac_fib_alloc(aac, DMA_NONE); if (fibctx) { struct aac_pause *cmd; int status; @@ -2290,7 +2282,7 @@ static int aac_send_wellness_command(struct aac_dev *dev, char *wellness_str, int ret = -ENOMEM; u32 vbus, vid; - fibptr = aac_fib_alloc(dev); + fibptr = aac_fib_alloc(dev, DMA_TO_DEVICE); if (!fibptr) goto out; @@ -2388,7 +2380,7 @@ static int aac_send_hosttime(struct aac_dev *dev, struct timespec64 *now) struct fib *fibptr; __le32 *info; - fibptr = aac_fib_alloc(dev); + fibptr = aac_fib_alloc(dev, DMA_TO_DEVICE); if (!fibptr) goto out; diff --git a/drivers/scsi/aacraid/dpcsup.c b/drivers/scsi/aacraid/dpcsup.c index fbe334c59f37..9424792432ec 100644 --- a/drivers/scsi/aacraid/dpcsup.c +++ b/drivers/scsi/aacraid/dpcsup.c @@ -315,7 +315,7 @@ unsigned int aac_intr_normal(struct aac_dev *dev, u32 index, int isAif, struct fib *fibctx; struct aac_aifcmd *cmd; - fibctx = aac_fib_alloc(dev); + fibctx = aac_fib_alloc(dev, DMA_FROM_DEVICE); if (!fibctx) return 1; aac_fib_init(fibctx); diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index e5d89b309c3a..ab3762c01738 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -714,7 +714,7 @@ static int aac_eh_abort(struct scsi_cmnd* cmd) return ret; /* start a HBA_TMF_ABORT_TASK TMF request */ - fib = aac_fib_alloc(aac); + fib = aac_fib_alloc(aac, DMA_NONE); if (!fib) return ret; @@ -925,7 +925,7 @@ static int aac_eh_dev_reset(struct scsi_cmnd *cmd) pr_err("%s: Host device reset request. SCSI hang ?\n", AAC_DRIVERNAME); - fib = aac_fib_alloc(aac); + fib = aac_fib_alloc(aac, DMA_NONE); if (!fib) return ret; @@ -988,7 +988,7 @@ static int aac_eh_target_reset(struct scsi_cmnd *cmd) pr_err("%s: Host target reset request. SCSI hang ?\n", AAC_DRIVERNAME); - fib = aac_fib_alloc(aac); + fib = aac_fib_alloc(aac, DMA_NONE); if (!fib) return ret; @@ -1641,6 +1641,7 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) shost->max_cmd_len = 16; shost->max_id = MAXIMUM_NUM_CONTAINERS; shost->max_lun = AAC_MAX_LUN; + shost->nr_reserved_cmds = AAC_NUM_MGT_FIB; shost->sg_tablesize = HBA_MAX_SG_SEPARATE; if (aac_cfg_major == AAC_CHARDEV_NEEDS_REINIT) @@ -1715,6 +1716,10 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) if (error) goto out_deinit; + aac->scsi_host_dev = scsi_get_host_dev(shost); + if (!aac->scsi_host_dev) + goto out_remove_host; + aac->maximum_num_channels = aac_drivers[index].channels; error = aac_get_adapter_info(aac); if (error < 0) @@ -1790,6 +1795,8 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) kfree(aac->queues); aac_adapter_ioremap(aac, 0); kfree(aac->fsa_dev); + out_remove_host: + scsi_remove_host(shost); out_free_fibs: kfree(aac->fibs); out_free_host: From patchwork Mon Feb 22 13:23:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386495 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 85B7AC433E9 for ; Mon, 22 Feb 2021 13:32:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4419C64DD0 for ; Mon, 22 Feb 2021 13:32:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231511AbhBVNcV (ORCPT ); Mon, 22 Feb 2021 08:32:21 -0500 Received: from mx2.suse.de ([195.135.220.15]:48674 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231497AbhBVN2o (ORCPT ); Mon, 22 Feb 2021 08:28:44 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 424EAB019; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 20/31] aacraid: use scsi_host_busy_iter() to traverse outstanding commands Date: Mon, 22 Feb 2021 14:23:54 +0100 Message-Id: <20210222132405.91369-21-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Instead of walking the array of potential commands and trying to figure out which one might be pending the driver should be using scsi_host_busy_iter() to traverse all outstanding commands. And for command abort we can now lookup the fibs directly as we now have a 1:1 mapping between request tags and fibs. Signed-off-by: Hannes Reinecke --- drivers/scsi/aacraid/commsup.c | 49 ++++++------ drivers/scsi/aacraid/linit.c | 131 ++++++++++++++------------------- 2 files changed, 84 insertions(+), 96 deletions(-) diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c index 96c8226309ba..d4c63ba1a89f 100644 --- a/drivers/scsi/aacraid/commsup.c +++ b/drivers/scsi/aacraid/commsup.c @@ -1465,6 +1465,32 @@ static void aac_schedule_bus_scan(struct aac_dev *aac) aac_schedule_src_reinit_aif_worker(aac); } +static bool aac_close_sync_fib_iter(struct scsi_cmnd *command, void *data, + bool reserved) +{ + struct Scsi_Host *host = command->device->host; + struct aac_dev *aac = (struct aac_dev *)host->hostdata; + struct fib *fib = &aac->fibs[command->request->tag]; + int *retval = data; + __le32 XferState = fib->hw_fib_va->header.XferState; + bool is_response_expected = false; + + if (!(XferState & cpu_to_le32(NoResponseExpected | Async)) && + (XferState & cpu_to_le32(ResponseExpected))) + is_response_expected = true; + + if (is_response_expected + || fib->flags & FIB_CONTEXT_FLAG_WAIT) { + unsigned long flagv; + spin_lock_irqsave(&fib->event_lock, flagv); + complete(&fib->event_wait); + spin_unlock_irqrestore(&fib->event_lock, flagv); + schedule(); + *retval = 0; + } + return true; +} + static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) { int index, quirks; @@ -1473,7 +1499,6 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) int jafo = 0; int bled; u64 dmamask; - int num_of_fibs = 0; /* * Assumptions: @@ -1507,27 +1532,7 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) * Loop through the fibs, close the synchronous FIBS */ retval = 1; - num_of_fibs = aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB; - for (index = 0; index < num_of_fibs; index++) { - - struct fib *fib = &aac->fibs[index]; - __le32 XferState = fib->hw_fib_va->header.XferState; - bool is_response_expected = false; - - if (!(XferState & cpu_to_le32(NoResponseExpected | Async)) && - (XferState & cpu_to_le32(ResponseExpected))) - is_response_expected = true; - - if (is_response_expected - || fib->flags & FIB_CONTEXT_FLAG_WAIT) { - unsigned long flagv; - spin_lock_irqsave(&fib->event_lock, flagv); - complete(&fib->event_wait); - spin_unlock_irqrestore(&fib->event_lock, flagv); - schedule(); - retval = 0; - } - } + scsi_host_busy_iter(host, aac_close_sync_fib_iter, &retval); /* Give some extra time for ioctls to complete. */ if (retval == 0) ssleep(2); diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index ab3762c01738..52c29cc55846 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -681,7 +681,8 @@ static int aac_eh_abort(struct scsi_cmnd* cmd) struct scsi_device * dev = cmd->device; struct Scsi_Host * host = dev->host; struct aac_dev * aac = (struct aac_dev *)host->hostdata; - int count, found; + struct fib *fib; + int count; u32 bus, cid; int ret = FAILED; @@ -691,26 +692,20 @@ static int aac_eh_abort(struct scsi_cmnd* cmd) bus = aac_logical_to_phys(scmd_channel(cmd)); cid = scmd_id(cmd); if (aac->hba_map[bus][cid].devtype == AAC_DEVTYPE_NATIVE_RAW) { - struct fib *fib; struct aac_hba_tm_req *tmf; int status; u64 address; pr_err("%s: Host adapter abort request (%d,%d,%d,%d)\n", - AAC_DRIVERNAME, - host->host_no, sdev_channel(dev), sdev_id(dev), (int)dev->lun); - - found = 0; - for (count = 0; count < (host->can_queue + AAC_NUM_MGT_FIB); ++count) { - fib = &aac->fibs[count]; - if (*(u8 *)fib->hw_fib_va != 0 && - (fib->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) && - (fib->callback_data == cmd)) { - found = 1; - break; - } - } - if (!found) + AAC_DRIVERNAME, host->host_no, + sdev_channel(dev), sdev_id(dev), (int)dev->lun); + + fib = &aac->fibs[cmd->request->tag]; + if (*(u8 *)fib->hw_fib_va != 0 && + (fib->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) && + (fib->callback_data == cmd)) + ret = SUCCESS; + if (ret == FAILED) return ret; /* start a HBA_TMF_ABORT_TASK TMF request */ @@ -772,20 +767,13 @@ static int aac_eh_abort(struct scsi_cmnd* cmd) * Mark associated FIB to not complete, * eh handler does this */ - for (count = 0; - count < (host->can_queue + AAC_NUM_MGT_FIB); - ++count) { - struct fib *fib = &aac->fibs[count]; - - if (fib->hw_fib_va->header.XferState && - (fib->flags & FIB_CONTEXT_FLAG) && - (fib->callback_data == cmd)) { - fib->flags |= - FIB_CONTEXT_FLAG_TIMED_OUT; - cmd->SCp.phase = - AAC_OWNER_ERROR_HANDLER; - ret = SUCCESS; - } + fib = &aac->fibs[cmd->request->tag]; + if (fib->hw_fib_va->header.XferState && + (fib->flags & FIB_CONTEXT_FLAG) && + (fib->callback_data == cmd)) { + fib->flags |= FIB_CONTEXT_FLAG_TIMED_OUT; + cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER; + ret = SUCCESS; } break; case TEST_UNIT_READY: @@ -793,27 +781,14 @@ static int aac_eh_abort(struct scsi_cmnd* cmd) * Mark associated FIB to not complete, * eh handler does this */ - for (count = 0; - count < (host->can_queue + AAC_NUM_MGT_FIB); - ++count) { - struct scsi_cmnd *command; - struct fib *fib = &aac->fibs[count]; - - command = fib->callback_data; - - if ((fib->hw_fib_va->header.XferState & - cpu_to_le32 - (Async | NoResponseExpected)) && - (fib->flags & FIB_CONTEXT_FLAG) && - ((command)) && - (command->device == cmd->device)) { - fib->flags |= - FIB_CONTEXT_FLAG_TIMED_OUT; - command->SCp.phase = - AAC_OWNER_ERROR_HANDLER; - if (command == cmd) - ret = SUCCESS; - } + fib = &aac->fibs[cmd->request->tag]; + if ((fib->hw_fib_va->header.XferState & + cpu_to_le32(Async | NoResponseExpected)) && + (fib->flags & FIB_CONTEXT_FLAG) && + (fib->callback_data == cmd)) { + fib->flags |= FIB_CONTEXT_FLAG_TIMED_OUT; + cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER; + ret = SUCCESS; } break; } @@ -1021,6 +996,36 @@ static int aac_eh_target_reset(struct scsi_cmnd *cmd) return ret; } +static bool aac_eh_bus_reset_iter(struct scsi_cmnd *cmd, void *data, + bool reserved) +{ + struct Scsi_Host *host = cmd->device->host; + struct aac_dev *aac = (struct aac_dev *)host->hostdata; + struct fib *fib = &aac->fibs[cmd->request->tag]; + int *cmd_bus = data; + + if (fib->hw_fib_va->header.XferState && + (fib->flags & FIB_CONTEXT_FLAG) && + (fib->flags & FIB_CONTEXT_FLAG_SCSI_CMD)) { + struct aac_hba_map_info *info; + u32 bus, cid; + + if (cmd != (struct scsi_cmnd *)fib->callback_data) + return true; + bus = aac_logical_to_phys(scmd_channel(cmd)); + if (bus != *cmd_bus) + return true; + cid = scmd_id(cmd); + info = &aac->hba_map[bus][cid]; + if (bus >= AAC_MAX_BUSES || cid >= AAC_MAX_TARGETS || + info->devtype != AAC_DEVTYPE_NATIVE_RAW) { + fib->flags |= FIB_CONTEXT_FLAG_EH_RESET; + cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER; + } + } + return true; +} + /* * aac_eh_bus_reset - Bus reset command handling * @scsi_cmd: SCSI command block causing the reset @@ -1038,29 +1043,7 @@ static int aac_eh_bus_reset(struct scsi_cmnd* cmd) cmd_bus = aac_logical_to_phys(scmd_channel(cmd)); /* Mark the assoc. FIB to not complete, eh handler does this */ - for (count = 0; count < (host->can_queue + AAC_NUM_MGT_FIB); ++count) { - struct fib *fib = &aac->fibs[count]; - - if (fib->hw_fib_va->header.XferState && - (fib->flags & FIB_CONTEXT_FLAG) && - (fib->flags & FIB_CONTEXT_FLAG_SCSI_CMD)) { - struct aac_hba_map_info *info; - u32 bus, cid; - - cmd = (struct scsi_cmnd *)fib->callback_data; - bus = aac_logical_to_phys(scmd_channel(cmd)); - if (bus != cmd_bus) - continue; - cid = scmd_id(cmd); - info = &aac->hba_map[bus][cid]; - if (bus >= AAC_MAX_BUSES || cid >= AAC_MAX_TARGETS || - info->devtype != AAC_DEVTYPE_NATIVE_RAW) { - fib->flags |= FIB_CONTEXT_FLAG_EH_RESET; - cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER; - } - } - } - + scsi_host_busy_iter(host, aac_eh_bus_reset_iter, &cmd_bus); pr_err("%s: Host bus reset request. SCSI hang ?\n", AAC_DRIVERNAME); /* From patchwork Mon Feb 22 13:23:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386494 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 023DDC433DB for ; Mon, 22 Feb 2021 13:32:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A326464E32 for ; Mon, 22 Feb 2021 13:32:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231846AbhBVNch (ORCPT ); Mon, 22 Feb 2021 08:32:37 -0500 Received: from mx2.suse.de ([195.135.220.15]:48668 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231361AbhBVN2n (ORCPT ); Mon, 22 Feb 2021 08:28:43 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 1FC99B008; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 21/31] mv_sas: kill mvsas_debug_issue_ssp_tmf() Date: Mon, 22 Feb 2021 14:23:55 +0100 Message-Id: <20210222132405.91369-22-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Just a wrapper around mvs_exec_internal_tmf_task(), so call it directly and kill the wrapper. Signed-off-by: Hannes Reinecke --- drivers/scsi/mvsas/mv_sas.c | 33 +++++++++++---------------------- 1 file changed, 11 insertions(+), 22 deletions(-) diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c index 1acea528f27f..543b435f4c8c 100644 --- a/drivers/scsi/mvsas/mv_sas.c +++ b/drivers/scsi/mvsas/mv_sas.c @@ -1275,11 +1275,14 @@ static void mvs_tmf_timedout(struct timer_list *t) #define MVS_TASK_TIMEOUT 20 static int mvs_exec_internal_tmf_task(struct domain_device *dev, - void *parameter, u32 para_len, struct mvs_tmf_task *tmf) + u8 *lun, struct mvs_tmf_task *tmf) { int res, retry; struct sas_task *task = NULL; + if (!(dev->tproto & SAS_PROTOCOL_SSP)) + return TMF_RESP_FUNC_ESUPP; + for (retry = 0; retry < 3; retry++) { task = sas_alloc_slow_task(GFP_KERNEL); if (!task) @@ -1288,7 +1291,7 @@ static int mvs_exec_internal_tmf_task(struct domain_device *dev, task->dev = dev; task->task_proto = dev->tproto; - memcpy(&task->ssp_task, parameter, para_len); + memcpy(task->ssp_task.LUN, lun, 8); task->task_done = mvs_task_done; task->slow_task->timer.function = mvs_tmf_timedout; @@ -1349,20 +1352,6 @@ static int mvs_exec_internal_tmf_task(struct domain_device *dev, return res; } -static int mvs_debug_issue_ssp_tmf(struct domain_device *dev, - u8 *lun, struct mvs_tmf_task *tmf) -{ - struct sas_ssp_task ssp_task; - if (!(dev->tproto & SAS_PROTOCOL_SSP)) - return TMF_RESP_FUNC_ESUPP; - - memcpy(ssp_task.LUN, lun, 8); - - return mvs_exec_internal_tmf_task(dev, &ssp_task, - sizeof(ssp_task), tmf); -} - - /* Standard mandates link reset for ATA (type 0) and hard reset for SSP (type 1) , only for RECOVERY */ static int mvs_debug_I_T_nexus_reset(struct domain_device *dev) @@ -1388,7 +1377,7 @@ int mvs_lu_reset(struct domain_device *dev, u8 *lun) tmf_task.tmf = TMF_LU_RESET; mvi_dev->dev_status = MVS_DEV_EH; - rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); + rc = mvs_exec_internal_tmf_task(dev, lun, &tmf_task); if (rc == TMF_RESP_FUNC_COMPLETE) { spin_lock_irqsave(&mvi->lock, flags); mvs_release_task(mvi, dev); @@ -1445,7 +1434,7 @@ int mvs_query_task(struct sas_task *task) tmf_task.tmf = TMF_QUERY_TASK; tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); - rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); + rc = mvs_exec_internal_tmf_task(dev, lun.scsi_lun, &tmf_task); switch (rc) { /* The task is still in Lun, release it then */ case TMF_RESP_FUNC_SUCC: @@ -1500,7 +1489,7 @@ int mvs_abort_task(struct sas_task *task) tmf_task.tmf = TMF_ABORT_TASK; tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); - rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); + rc = mvs_exec_internal_tmf_task(dev, lun.scsi_lun, &tmf_task); /* if successful, clear the task and callback forwards.*/ if (rc == TMF_RESP_FUNC_COMPLETE) { @@ -1543,7 +1532,7 @@ int mvs_abort_task_set(struct domain_device *dev, u8 *lun) struct mvs_tmf_task tmf_task; tmf_task.tmf = TMF_ABORT_TASK_SET; - rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); + rc = mvs_exec_internal_tmf_task(dev, lun, &tmf_task); return rc; } @@ -1554,7 +1543,7 @@ int mvs_clear_aca(struct domain_device *dev, u8 *lun) struct mvs_tmf_task tmf_task; tmf_task.tmf = TMF_CLEAR_ACA; - rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); + rc = mvs_exec_internal_tmf_task(dev, lun, &tmf_task); return rc; } @@ -1565,7 +1554,7 @@ int mvs_clear_task_set(struct domain_device *dev, u8 *lun) struct mvs_tmf_task tmf_task; tmf_task.tmf = TMF_CLEAR_TASK_SET; - rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task); + rc = mvs_exec_internal_tmf_task(dev, lun, &tmf_task); return rc; } From patchwork Mon Feb 22 13:23:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386493 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EBF8AC43333 for ; Mon, 22 Feb 2021 13:34:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 873DA64DD0 for ; Mon, 22 Feb 2021 13:33:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231358AbhBVNcx (ORCPT ); Mon, 22 Feb 2021 08:32:53 -0500 Received: from mx2.suse.de ([195.135.220.15]:48670 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231402AbhBVN2n (ORCPT ); Mon, 22 Feb 2021 08:28:43 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 265DAB009; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 22/31] pm8001: kill pm8001_issue_ssp_tmf() Date: Mon, 22 Feb 2021 14:23:56 +0100 Message-Id: <20210222132405.91369-23-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Just a wrapper around pm8001_exec_internal_tmf_task(), so call it directly and kill the wrapper. Signed-off-by: Hannes Reinecke --- drivers/scsi/pm8001/pm8001_sas.c | 42 +++++++++++++------------------- 1 file changed, 17 insertions(+), 25 deletions(-) diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c index a98d4496ff8b..6e1c1bbbfdd9 100644 --- a/drivers/scsi/pm8001/pm8001_sas.c +++ b/drivers/scsi/pm8001/pm8001_sas.c @@ -697,16 +697,15 @@ static void pm8001_tmf_timedout(struct timer_list *t) /** * pm8001_exec_internal_tmf_task - execute some task management commands. * @dev: the wanted device. + * @lun: the logical unit number of the device * @tmf: which task management wanted to be take. - * @para_len: para_len. - * @parameter: ssp task parameter. * * when errors or exception happened, we may want to do something, for example * abort the issued task which result in this execption, it is done by calling * this function, note it is also with the task execute interface. */ static int pm8001_exec_internal_tmf_task(struct domain_device *dev, - void *parameter, u32 para_len, struct pm8001_tmf_task *tmf) + u8 *lun, struct pm8001_tmf_task *tmf) { int res, retry; struct sas_task *task = NULL; @@ -714,6 +713,9 @@ static int pm8001_exec_internal_tmf_task(struct domain_device *dev, struct pm8001_device *pm8001_dev = dev->lldd_dev; DECLARE_COMPLETION_ONSTACK(completion_setstate); + if (!(dev->tproto & SAS_PROTOCOL_SSP)) + return TMF_RESP_FUNC_ESUPP; + for (retry = 0; retry < 3; retry++) { task = sas_alloc_slow_task(GFP_KERNEL); if (!task) @@ -721,7 +723,7 @@ static int pm8001_exec_internal_tmf_task(struct domain_device *dev, task->dev = dev; task->task_proto = dev->tproto; - memcpy(&task->ssp_task, parameter, para_len); + memcpy(task->ssp_task.LUN, lun, 8); task->task_done = pm8001_task_done; task->slow_task->timer.function = pm8001_tmf_timedout; task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ; @@ -897,18 +899,6 @@ void pm8001_dev_gone(struct domain_device *dev) pm8001_dev_gone_notify(dev); } -static int pm8001_issue_ssp_tmf(struct domain_device *dev, - u8 *lun, struct pm8001_tmf_task *tmf) -{ - struct sas_ssp_task ssp_task; - if (!(dev->tproto & SAS_PROTOCOL_SSP)) - return TMF_RESP_FUNC_ESUPP; - - memcpy((u8 *)&ssp_task.LUN, lun, 8); - return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task), - tmf); -} - /* retry commands by ha, by task and/or by device */ void pm8001_open_reject_retry( struct pm8001_hba_info *pm8001_ha, @@ -1114,7 +1104,7 @@ int pm8001_lu_reset(struct domain_device *dev, u8 *lun) wait_for_completion(&completion_setstate); } else { tmf_task.tmf = TMF_LU_RESET; - rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); + rc = pm8001_exec_internal_tmf_task(dev, lun, &tmf_task); } /* If failed, fall-through I_T_Nexus reset */ pm8001_dbg(pm8001_ha, EH, "for device[%x]:rc=%d\n", @@ -1145,10 +1135,10 @@ int pm8001_query_task(struct sas_task *task) return rc; } pm8001_dbg(pm8001_ha, EH, "Query:[%16ph]\n", cmnd->cmnd); - tmf_task.tmf = TMF_QUERY_TASK; + tmf_task.tmf = TMF_QUERY_TASK; tmf_task.tag_of_task_to_be_managed = tag; - rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); + rc = pm8001_exec_internal_tmf_task(dev, lun.scsi_lun, &tmf_task); switch (rc) { /* The task is still in Lun, release it then */ case TMF_RESP_FUNC_SUCC: @@ -1216,9 +1206,11 @@ int pm8001_abort_task(struct sas_task *task) int_to_scsilun(cmnd->device->lun, &lun); tmf_task.tmf = TMF_ABORT_TASK; tmf_task.tag_of_task_to_be_managed = tag; - rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); - pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, - pm8001_dev->sas_device, 0, tag); + rc = pm8001_exec_internal_tmf_task(dev, lun.scsi_lun, + &tmf_task); + if (rc == TMF_RESP_FUNC_SUCC) + pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, + pm8001_dev->sas_device, 0, tag); } else if (task->task_proto & SAS_PROTOCOL_SATA || task->task_proto & SAS_PROTOCOL_STP) { if (pm8001_ha->chip_id == chip_8006) { @@ -1328,7 +1320,7 @@ int pm8001_abort_task_set(struct domain_device *dev, u8 *lun) struct pm8001_tmf_task tmf_task; tmf_task.tmf = TMF_ABORT_TASK_SET; - return pm8001_issue_ssp_tmf(dev, lun, &tmf_task); + return pm8001_exec_internal_tmf_task(dev, lun, &tmf_task); } int pm8001_clear_aca(struct domain_device *dev, u8 *lun) @@ -1336,7 +1328,7 @@ int pm8001_clear_aca(struct domain_device *dev, u8 *lun) struct pm8001_tmf_task tmf_task; tmf_task.tmf = TMF_CLEAR_ACA; - return pm8001_issue_ssp_tmf(dev, lun, &tmf_task); + return pm8001_exec_internal_tmf_task(dev, lun, &tmf_task); } int pm8001_clear_task_set(struct domain_device *dev, u8 *lun) @@ -1348,5 +1340,5 @@ int pm8001_clear_task_set(struct domain_device *dev, u8 *lun) pm8001_dbg(pm8001_ha, EH, "I_T_L_Q clear task set[%x]\n", pm8001_dev->device_id); tmf_task.tmf = TMF_CLEAR_TASK_SET; - return pm8001_issue_ssp_tmf(dev, lun, &tmf_task); + return pm8001_exec_internal_tmf_task(dev, lun, &tmf_task); } From patchwork Mon Feb 22 13:23:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386024 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4C8D5C433DB for ; Mon, 22 Feb 2021 13:31:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F0C6F64E5C for ; Mon, 22 Feb 2021 13:31:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231924AbhBVNav (ORCPT ); Mon, 22 Feb 2021 08:30:51 -0500 Received: from mx2.suse.de ([195.135.220.15]:47796 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231260AbhBVN2R (ORCPT ); Mon, 22 Feb 2021 08:28:17 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 4CD8FB01D; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 23/31] pm8001: kill 'dev' argument from pm8001_exec_internal_task_abort() Date: Mon, 22 Feb 2021 14:23:57 +0100 Message-Id: <20210222132405.91369-24-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org 'dev' is always pm8001_dev->sas_device, so we can kill it. Signed-off-by: Hannes Reinecke --- drivers/scsi/pm8001/pm8001_sas.c | 31 ++++++++++++++++--------------- 1 file changed, 16 insertions(+), 15 deletions(-) diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c index 6e1c1bbbfdd9..01e91347eb41 100644 --- a/drivers/scsi/pm8001/pm8001_sas.c +++ b/drivers/scsi/pm8001/pm8001_sas.c @@ -791,9 +791,10 @@ static int pm8001_exec_internal_tmf_task(struct domain_device *dev, static int pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, - struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag, + struct pm8001_device *pm8001_dev, u32 flag, u32 task_tag) { + struct domain_device *dev = pm8001_dev->sas_device; int res, retry; u32 ccb_tag; struct pm8001_ccb_info *ccb; @@ -879,8 +880,8 @@ static void pm8001_dev_gone_notify(struct domain_device *dev) pm8001_dev->device_id, pm8001_dev->dev_type); if (atomic_read(&pm8001_dev->running_req)) { spin_unlock_irqrestore(&pm8001_ha->lock, flags); - pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , - dev, 1, 0); + pm8001_exec_internal_task_abort(pm8001_ha, + pm8001_dev, 1, 0); while (atomic_read(&pm8001_dev->running_req)) msleep(20); spin_lock_irqsave(&pm8001_ha->lock, flags); @@ -1003,8 +1004,8 @@ int pm8001_I_T_nexus_reset(struct domain_device *dev) goto out; } msleep(2000); - rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , - dev, 1, 0); + rc = pm8001_exec_internal_task_abort(pm8001_ha, + pm8001_dev, 1, 0); if (rc) { pm8001_dbg(pm8001_ha, EH, "task abort failed %x\n" "with rc %d\n", pm8001_dev->device_id, rc); @@ -1049,8 +1050,8 @@ int pm8001_I_T_nexus_event_handler(struct domain_device *dev) goto out; } /* send internal ssp/sata/smp abort command to FW */ - rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , - dev, 1, 0); + rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, + 1, 0); msleep(100); /* deregister the target device */ @@ -1065,8 +1066,8 @@ int pm8001_I_T_nexus_event_handler(struct domain_device *dev) wait_for_completion(&completion_setstate); } else { /* send internal ssp/sata/smp abort command to FW */ - rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , - dev, 1, 0); + rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, + 1, 0); msleep(100); /* deregister the target device */ @@ -1094,8 +1095,8 @@ int pm8001_lu_reset(struct domain_device *dev, u8 *lun) DECLARE_COMPLETION_ONSTACK(completion_setstate); if (dev_is_sata(dev)) { struct sas_phy *phy = sas_get_local_phy(dev); - rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , - dev, 1, 0); + rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, + 1, 0); rc = sas_phy_reset(phy, 1); sas_put_local_phy(phy); pm8001_dev->setds_completion = &completion_setstate; @@ -1210,7 +1211,7 @@ int pm8001_abort_task(struct sas_task *task) &tmf_task); if (rc == TMF_RESP_FUNC_SUCC) pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, - pm8001_dev->sas_device, 0, tag); + 0, tag); } else if (task->task_proto & SAS_PROTOCOL_SATA || task->task_proto & SAS_PROTOCOL_STP) { if (pm8001_ha->chip_id == chip_8006) { @@ -1279,7 +1280,7 @@ int pm8001_abort_task(struct sas_task *task) * going to free the task. */ ret = pm8001_exec_internal_task_abort(pm8001_ha, - pm8001_dev, pm8001_dev->sas_device, 1, tag); + pm8001_dev, 1, tag); if (ret) goto out; ret = wait_for_completion_timeout( @@ -1296,13 +1297,13 @@ int pm8001_abort_task(struct sas_task *task) wait_for_completion(&completion); } else { rc = pm8001_exec_internal_task_abort(pm8001_ha, - pm8001_dev, pm8001_dev->sas_device, 0, tag); + pm8001_dev, 0, tag); } rc = TMF_RESP_FUNC_COMPLETE; } else if (task->task_proto & SAS_PROTOCOL_SMP) { /* SMP */ rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, - pm8001_dev->sas_device, 0, tag); + 0, tag); } out: From patchwork Mon Feb 22 13:23:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7FA26C433E0 for ; Mon, 22 Feb 2021 13:30:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 33CD064E5C for ; Mon, 22 Feb 2021 13:30:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231897AbhBVNac (ORCPT ); Mon, 22 Feb 2021 08:30:32 -0500 Received: from mx2.suse.de ([195.135.220.15]:47788 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231274AbhBVN2S (ORCPT ); Mon, 22 Feb 2021 08:28:18 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 643F8B02E; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 24/31] pm8001: use libsas-provided domain devices for SATA Date: Mon, 22 Feb 2021 14:23:58 +0100 Message-Id: <20210222132405.91369-25-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The pm8001 driver assumes that libsas does not provide any domain devices for SATA, which is actually not true. So use the libsas-provided domain devices for SATA and don't allocate private ones. Signed-off-by: Hannes Reinecke --- drivers/scsi/pm8001/pm8001_hwi.c | 14 +------------- drivers/scsi/pm8001/pm80xx_hwi.c | 15 +-------------- 2 files changed, 2 insertions(+), 27 deletions(-) diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c index 49bf2f70a470..3998fcd69acb 100644 --- a/drivers/scsi/pm8001/pm8001_hwi.c +++ b/drivers/scsi/pm8001/pm8001_hwi.c @@ -1749,7 +1749,7 @@ static void pm8001_send_read_log(struct pm8001_hba_info *pm8001_ha, struct pm8001_ccb_info *ccb; struct sas_task *task = NULL; struct host_to_dev_fis fis; - struct domain_device *dev; + struct domain_device *dev = pm8001_ha_dev->sas_device; struct inbound_queue_table *circularQ; u32 opc = OPC_INB_SATA_HOST_OPSTART; @@ -1768,17 +1768,6 @@ static void pm8001_send_read_log(struct pm8001_hba_info *pm8001_ha, return; } - /* allocate domain device by ourselves as libsas - * is not going to provide any - */ - dev = kzalloc(sizeof(struct domain_device), GFP_ATOMIC); - if (!dev) { - sas_free_task(task); - pm8001_tag_free(pm8001_ha, ccb_tag); - pm8001_dbg(pm8001_ha, FAIL, - "Domain device cannot be allocated\n"); - return; - } task->dev = dev; task->dev->lldd_dev = pm8001_ha_dev; @@ -1810,7 +1799,6 @@ static void pm8001_send_read_log(struct pm8001_hba_info *pm8001_ha, if (res) { sas_free_task(task); pm8001_tag_free(pm8001_ha, ccb_tag); - kfree(dev); } } diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index 84315560e8e1..bc1929b230c4 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.c +++ b/drivers/scsi/pm8001/pm80xx_hwi.c @@ -1824,7 +1824,7 @@ static void pm80xx_send_read_log(struct pm8001_hba_info *pm8001_ha, struct pm8001_ccb_info *ccb; struct sas_task *task = NULL; struct host_to_dev_fis fis; - struct domain_device *dev; + struct domain_device *dev = pm8001_ha_dev->sas_device; struct inbound_queue_table *circularQ; u32 opc = OPC_INB_SATA_HOST_OPSTART; @@ -1843,18 +1843,6 @@ static void pm80xx_send_read_log(struct pm8001_hba_info *pm8001_ha, return; } - /* allocate domain device by ourselves as libsas - * is not going to provide any - */ - dev = kzalloc(sizeof(struct domain_device), GFP_ATOMIC); - if (!dev) { - sas_free_task(task); - pm8001_tag_free(pm8001_ha, ccb_tag); - pm8001_dbg(pm8001_ha, FAIL, - "Domain device cannot be allocated\n"); - return; - } - task->dev = dev; task->dev->lldd_dev = pm8001_ha_dev; @@ -1888,7 +1876,6 @@ static void pm80xx_send_read_log(struct pm8001_hba_info *pm8001_ha, if (res) { sas_free_task(task); pm8001_tag_free(pm8001_ha, ccb_tag); - kfree(dev); } } From patchwork Mon Feb 22 13:23:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386497 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37DC8C4332B for ; Mon, 22 Feb 2021 13:31:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0F21864E32 for ; Mon, 22 Feb 2021 13:31:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230349AbhBVNbS (ORCPT ); Mon, 22 Feb 2021 08:31:18 -0500 Received: from mx2.suse.de ([195.135.220.15]:48666 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231273AbhBVN2m (ORCPT ); Mon, 22 Feb 2021 08:28:42 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 33416B013; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 25/31] libsas: add SCSI target pointer to struct domain_device Date: Mon, 22 Feb 2021 14:23:59 +0100 Message-Id: <20210222132405.91369-26-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Add a pointer to the SCSI target which corresponds to the domain device. Signed-off-by: Hannes Reinecke --- drivers/scsi/libsas/sas_scsi_host.c | 2 ++ include/scsi/libsas.h | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c index 1bf939818c98..ae247aed857f 100644 --- a/drivers/scsi/libsas/sas_scsi_host.c +++ b/drivers/scsi/libsas/sas_scsi_host.c @@ -830,6 +830,7 @@ int sas_target_alloc(struct scsi_target *starget) kref_get(&found_dev->kref); starget->hostdata = found_dev; + found_dev->starget = starget; return 0; } @@ -919,6 +920,7 @@ void sas_target_destroy(struct scsi_target *starget) return; starget->hostdata = NULL; + found_dev->starget = NULL; sas_put_device(found_dev); } diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index 9271d7a49b90..3a024eced38c 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -175,6 +175,7 @@ struct domain_device { struct domain_device *parent; struct list_head siblings; /* devices on the same level */ + struct scsi_target *starget; /* Corresponding SCSI target device */ struct asd_sas_port *port; /* shortcut to root of the tree */ struct sas_phy *phy; From patchwork Mon Feb 22 13:24:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 385780 Delivered-To: patch@linaro.org Received: by 2002:a02:290e:0:0:0:0:0 with SMTP id p14csp1276312jap; Mon, 22 Feb 2021 05:34:05 -0800 (PST) X-Google-Smtp-Source: ABdhPJxZZOIK0jkmu3bu0DRvM3UuGdaTRAvFVJlG100WmYgOqi3RZXFHB/C2a8XIxlYuXi+0wU6W X-Received: by 2002:a17:906:25c4:: with SMTP id n4mr21036476ejb.359.1614000845277; Mon, 22 Feb 2021 05:34:05 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1614000845; cv=none; d=google.com; s=arc-20160816; b=Nmho83Vcl/JEjidUs5+knXD1Jf9fN4YtmupaIlYYZUvdacc6P+0BH1yZTsAxjjicDU 2YbjCbohuqR1bn9XG2EwHeTwy99ByYwaFTvZlL02IpAv8r4vzQMHEhRjPbyHQaJMVMlC UbG+/vOq4b1Q3dB9EY9t0p2Sk1AxajlKulPUAV1XWQzKU79bqf8ETDwLQ8voEb1GTCEu OHbwMb+eXxkoTJ1ycWjC9g56u2jHG22LTTrMexzqIAAwvrTt84Aszn1UagkbVE0REjvs 3hwTaNYFoRBXRii0whTAKGwULzbd5alCyDaOBrWmx5yA880+jb7vB+Sx9UkjYmfW/l/s bbmA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=3/IyHZeNEF7kjyYgrNXXYQyJq0SaJoyMqniYJ0bTfJ4=; b=cYRmYgqqZ3gBuF5aa4vPXgLvKSYzEneVonUY/aO4T167wDF5iVtbxwJpn/WqmGAgBu hqXYISjKvJLpCGXZkOKYkYg/z9jQ75TunbBr+tUKWEd0yDLYibyy5UUJT+qcSaNliHBH seCNtSKJnt5ultYecrheYwcXBm0u24+MdNGpvpZ0sdlo2CgmCbrO58oLcM/dZ9AaTBTp d2Cf+LVJuNWeSdDtS6vZ+EvHRXyd/bpKQevN3b96moixz6iHi8MLv1htgnmb9iy3QDpA aOPqyhYMgdRh9UyUn9EunAndmeQj8BeKoF3JzIeacX/XW69BcM0yR0lfz4DMWzGvSXer O9bg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-scsi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-scsi-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id e17si12685682edz.241.2021.02.22.05.34.05 for ; Mon, 22 Feb 2021 05:34:05 -0800 (PST) Received-SPF: pass (google.com: domain of linux-scsi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-scsi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-scsi-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231338AbhBVNcI (ORCPT ); Mon, 22 Feb 2021 08:32:08 -0500 Received: from mx2.suse.de ([195.135.220.15]:47842 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231351AbhBVN3y (ORCPT ); Mon, 22 Feb 2021 08:29:54 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 807D6B0EA; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 26/31] scsi: libsas, hisi_sas, mvsas, pm8001: Allocate Scsi_cmd for slow task Date: Mon, 22 Feb 2021 14:24:00 +0100 Message-Id: <20210222132405.91369-27-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: John Garry Allocate a Scsi_cmd for SAS slow tasks, so they can be accounted for in the blk-mq layer. Signed-off-by: John Garry Signed-off-by: Hannes Reinecke --- drivers/scsi/hisi_sas/hisi_sas_main.c | 56 ++++++++++++++++-------- drivers/scsi/libsas/sas_expander.c | 7 ++- drivers/scsi/libsas/sas_init.c | 61 ++++++++++++++++++++++++--- drivers/scsi/mvsas/mv_sas.c | 5 ++- drivers/scsi/pm8001/pm8001_hwi.c | 9 +++- drivers/scsi/pm8001/pm8001_sas.c | 39 +++++++++++------ drivers/scsi/pm8001/pm80xx_hwi.c | 9 +++- include/scsi/libsas.h | 8 +++- 8 files changed, 148 insertions(+), 46 deletions(-) -- 2.29.2 diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index a979edfd9a78..6a69a90a1b82 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -15,6 +15,7 @@ static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device, static int hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, struct domain_device *device, + struct scsi_lun *lun, int abort_flag, int tag); static int hisi_sas_softreset_ata_disk(struct domain_device *device); static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, @@ -1055,15 +1056,17 @@ static void hisi_sas_dev_gone(struct domain_device *device) struct hisi_sas_device *sas_dev = device->lldd_dev; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct device *dev = hisi_hba->dev; + struct scsi_lun lun; int ret = 0; dev_info(dev, "dev[%d:%x] is gone\n", sas_dev->device_id, sas_dev->dev_type); down(&hisi_hba->sem); + int_to_scsilun(0, &lun); if (!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) { hisi_sas_internal_task_abort(hisi_hba, device, - HISI_SAS_INT_ABT_DEV, 0); + &lun, HISI_SAS_INT_ABT_DEV, 0); hisi_sas_dereg_device(hisi_hba, device); @@ -1191,12 +1194,21 @@ static int hisi_sas_exec_internal_tmf_task(struct domain_device *device, { struct hisi_sas_device *sas_dev = device->lldd_dev; struct hisi_hba *hisi_hba = sas_dev->hisi_hba; + struct sas_ha_struct *sha = &hisi_hba->sha; struct device *dev = hisi_hba->dev; struct sas_task *task; int res, retry; for (retry = 0; retry < TASK_RETRY; retry++) { - task = sas_alloc_slow_task(GFP_KERNEL); + struct scsilun lun; + + int_to_scsilun(0, &lun); + if (!dev_is_sata) { + struct sas_ssp_task ssp_task = parameter; + + memcpy(lun.scsi_lun, ssp_task.LUN, 8); + } + task = sas_alloc_slow_task(sha, device, &lun, GFP_KERNEL); if (!task) return -ENOMEM; @@ -1494,7 +1506,9 @@ static void hisi_sas_terminate_stp_reject(struct hisi_hba *hisi_hba) { struct device *dev = hisi_hba->dev; int port_no, rc, i; + struct scsi_lun lun; + int_to_scsilun(0, &lun); for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { struct hisi_sas_device *sas_dev = &hisi_hba->devices[i]; struct domain_device *device = sas_dev->sas_device; @@ -1503,7 +1517,7 @@ static void hisi_sas_terminate_stp_reject(struct hisi_hba *hisi_hba) continue; rc = hisi_sas_internal_task_abort(hisi_hba, device, - HISI_SAS_INT_ABT_DEV, 0); + &lun, HISI_SAS_INT_ABT_DEV, 0); if (rc < 0) dev_err(dev, "STP reject: abort dev failed %d\n", rc); } @@ -1653,7 +1667,7 @@ static int hisi_sas_abort_task(struct sas_task *task) &tmf_task); rc2 = hisi_sas_internal_task_abort(hisi_hba, device, - HISI_SAS_INT_ABT_CMD, tag); + &lun, HISI_SAS_INT_ABT_CMD, tag); if (rc2 < 0) { dev_err(dev, "abort task: internal abort (%d)\n", rc2); return TMF_RESP_FUNC_FAILED; @@ -1673,9 +1687,9 @@ static int hisi_sas_abort_task(struct sas_task *task) } else if (task->task_proto & SAS_PROTOCOL_SATA || task->task_proto & SAS_PROTOCOL_STP) { if (task->dev->dev_type == SAS_SATA_DEV) { + int_to_scsilun(0, &lun); rc = hisi_sas_internal_task_abort(hisi_hba, device, - HISI_SAS_INT_ABT_DEV, - 0); + &lun, HISI_SAS_INT_ABT_DEV, 0); if (rc < 0) { dev_err(dev, "abort task: internal abort failed\n"); goto out; @@ -1689,8 +1703,9 @@ static int hisi_sas_abort_task(struct sas_task *task) u32 tag = slot->idx; struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue]; + int_to_scsilun(0, &lun); rc = hisi_sas_internal_task_abort(hisi_hba, device, - HISI_SAS_INT_ABT_CMD, tag); + &lun, HISI_SAS_INT_ABT_CMD, tag); if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) && task->lldd_task) { /* @@ -1716,7 +1731,7 @@ static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun) int rc; rc = hisi_sas_internal_task_abort(hisi_hba, device, - HISI_SAS_INT_ABT_DEV, 0); + (struct scsi_lun *)lun, HISI_SAS_INT_ABT_DEV, 0); if (rc < 0) { dev_err(dev, "abort task set: internal abort rc=%d\n", rc); return TMF_RESP_FUNC_FAILED; @@ -1804,10 +1819,12 @@ static int hisi_sas_I_T_nexus_reset(struct domain_device *device) { struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct device *dev = hisi_hba->dev; + struct scsi_lun lun; int rc; + int_to_scsilun(0, &lun); rc = hisi_sas_internal_task_abort(hisi_hba, device, - HISI_SAS_INT_ABT_DEV, 0); + &lun, HISI_SAS_INT_ABT_DEV, 0); if (rc < 0) { dev_err(dev, "I_T nexus reset: internal abort (%d)\n", rc); return TMF_RESP_FUNC_FAILED; @@ -1837,7 +1854,7 @@ static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun) /* Clear internal IO and then lu reset */ rc = hisi_sas_internal_task_abort(hisi_hba, device, - HISI_SAS_INT_ABT_DEV, 0); + (struct scsi_lun *)lun, HISI_SAS_INT_ABT_DEV, 0); if (rc < 0) { dev_err(dev, "lu_reset: internal abort failed\n"); goto out; @@ -2018,6 +2035,7 @@ hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id, * abort command for single IO command or a device * @hisi_hba: host controller struct * @device: domain device + * @lun: logical unit number * @abort_flag: mode of operation, device or single IO * @tag: tag of IO to be aborted (only relevant to single * IO mode) @@ -2025,12 +2043,15 @@ hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id, */ static int _hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, - struct domain_device *device, int abort_flag, - int tag, struct hisi_sas_dq *dq) + struct domain_device *device, + struct scsi_lun *lun, + int abort_flag, int tag, + struct hisi_sas_dq *dq) { - struct sas_task *task; struct hisi_sas_device *sas_dev = device->lldd_dev; + struct sas_ha_struct *sha = &hisi_hba->sha; struct device *dev = hisi_hba->dev; + struct sas_task *task; int res; /* @@ -2042,7 +2063,8 @@ _hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, if (!hisi_hba->hw->prep_abort) return TMF_RESP_FUNC_FAILED; - task = sas_alloc_slow_task(GFP_KERNEL); + task = sas_alloc_slow_task(sha, device, + (struct scsi_lun *)lun, GFP_KERNEL); if (!task) return -ENOMEM; @@ -2115,6 +2137,7 @@ _hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, static int hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, struct domain_device *device, + struct scsi_lun *lun, int abort_flag, int tag) { struct hisi_sas_slot *slot; @@ -2127,7 +2150,7 @@ hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, slot = &hisi_hba->slot_info[tag]; dq = &hisi_hba->dq[slot->dlvry_queue]; return _hisi_sas_internal_task_abort(hisi_hba, device, - abort_flag, tag, dq); + lun, abort_flag, tag, dq); case HISI_SAS_INT_ABT_DEV: for (i = 0; i < hisi_hba->cq_nvecs; i++) { struct hisi_sas_cq *cq = &hisi_hba->cq[i]; @@ -2137,8 +2160,7 @@ hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, continue; dq = &hisi_hba->dq[i]; rc = _hisi_sas_internal_task_abort(hisi_hba, device, - abort_flag, tag, - dq); + lun, abort_flag, tag, dq); if (rc) return rc; } diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 8d6bcc19359f..9e4a7c85a037 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -56,9 +56,12 @@ static int smp_execute_task_sg(struct domain_device *dev, { int res, retry; struct sas_task *task = NULL; + struct sas_ha_struct *ha = dev->port->ha; struct sas_internal *i = - to_sas_internal(dev->port->ha->core.shost->transportt); + to_sas_internal(ha->core.shost->transportt); + struct scsi_lun lun; + int_to_scsilun(0, &lun); mutex_lock(&dev->ex_dev.cmd_mutex); for (retry = 0; retry < 3; retry++) { if (test_bit(SAS_DEV_GONE, &dev->state)) { @@ -66,7 +69,7 @@ static int smp_execute_task_sg(struct domain_device *dev, break; } - task = sas_alloc_slow_task(GFP_KERNEL); + task = sas_alloc_slow_task(ha, dev, &lun, GFP_KERNEL); if (!task) { res = -ENOMEM; break; diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c index 2b0f98ca6ec3..9d0448b76a2f 100644 --- a/drivers/scsi/libsas/sas_init.c +++ b/drivers/scsi/libsas/sas_init.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include @@ -37,16 +38,36 @@ struct sas_task *sas_alloc_task(gfp_t flags) } EXPORT_SYMBOL_GPL(sas_alloc_task); -struct sas_task *sas_alloc_slow_task(gfp_t flags) +struct sas_task *sas_alloc_slow_task(struct sas_ha_struct *ha, + struct domain_device *dev, + struct scsi_lun *lun, gfp_t flags) { struct sas_task *task = sas_alloc_task(flags); - struct sas_task_slow *slow = kmalloc(sizeof(*slow), flags); + struct Scsi_Host *shost = ha->core.shost; + struct sas_task_slow *slow; - if (!task || !slow) { - if (task) - kmem_cache_free(sas_task_cache, task); - kfree(slow); + if (!task) return NULL; + + slow = kzalloc(sizeof(*slow), flags); + if (!slow) + goto out_err_slow; + + if (shost->nr_reserved_cmds) { + struct scsi_device *sdev; + + if (dev && dev->starget) { + sdev = scsi_device_lookup_by_target(dev->starget, + scsilun_to_int(lun)); + if (!sdev) + goto out_err_scmd; + } else + sdev = ha->core.shost_dev; + slow->scmd = scsi_get_internal_cmd(sdev, DMA_BIDIRECTIONAL, + REQ_NOWAIT); + if (!slow->scmd) + goto out_err_scmd; + ASSIGN_SAS_TASK(slow->scmd, task); } task->slow_task = slow; @@ -55,13 +76,31 @@ struct sas_task *sas_alloc_slow_task(gfp_t flags) init_completion(&slow->completion); return task; + +out_err_scmd: + kfree(slow); +out_err_slow: + kmem_cache_free(sas_task_cache, task); + return NULL; } EXPORT_SYMBOL_GPL(sas_alloc_slow_task); void sas_free_task(struct sas_task *task) { if (task) { - kfree(task->slow_task); + /* + * It could be good to just introduce separate sas_free_slow_task() to + * avoid the following in the fastpath. + */ + if (task->slow_task) { + struct scsi_cmnd *scmd = task->slow_task->scmd; + + if (scmd) { + ASSIGN_SAS_TASK(scmd, NULL); + scsi_put_internal_cmd(scmd); + } + kfree(task->slow_task); + } kmem_cache_free(sas_task_cache, task); } } @@ -95,6 +134,7 @@ void sas_hash_addr(u8 *hashed, const u8 *sas_addr) int sas_register_ha(struct sas_ha_struct *sas_ha) { + struct Scsi_Host *shost = sas_ha->core.shost; char name[64]; int error = 0; @@ -111,6 +151,13 @@ int sas_register_ha(struct sas_ha_struct *sas_ha) sas_ha->event_thres = SAS_PHY_SHUTDOWN_THRES; + if (shost->nr_reserved_cmds) { + sas_ha->core.shost_dev = scsi_get_host_dev(shost); + if (!sas_ha->core.shost_dev) { + pr_notice("couldn't register sas host device\n"); + return -ENOMEM; + } + } error = sas_register_phys(sas_ha); if (error) { pr_notice("couldn't register sas phys:%d\n", error); diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c index 543b435f4c8c..99bdb88b3e86 100644 --- a/drivers/scsi/mvsas/mv_sas.c +++ b/drivers/scsi/mvsas/mv_sas.c @@ -1278,13 +1278,16 @@ static int mvs_exec_internal_tmf_task(struct domain_device *dev, u8 *lun, struct mvs_tmf_task *tmf) { int res, retry; + struct sas_ha_struct *ha = dev->port->ha; struct sas_task *task = NULL; + struct scsi_lun scsilun; if (!(dev->tproto & SAS_PROTOCOL_SSP)) return TMF_RESP_FUNC_ESUPP; + memcpy(scsilun.scsi_lun, lun, 8); for (retry = 0; retry < 3; retry++) { - task = sas_alloc_slow_task(GFP_KERNEL); + task = sas_alloc_slow_task(ha, dev, &scsilun, GFP_KERNEL); if (!task) return -ENOMEM; diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c index 3998fcd69acb..105962b0c815 100644 --- a/drivers/scsi/pm8001/pm8001_hwi.c +++ b/drivers/scsi/pm8001/pm8001_hwi.c @@ -1701,6 +1701,7 @@ static void pm8001_send_abort_all(struct pm8001_hba_info *pm8001_ha, struct task_abort_req task_abort; struct inbound_queue_table *circularQ; u32 opc = OPC_INB_SATA_ABORT; + struct scsi_lun lun; int ret; if (!pm8001_ha_dev) { @@ -1708,7 +1709,9 @@ static void pm8001_send_abort_all(struct pm8001_hba_info *pm8001_ha, return; } - task = sas_alloc_slow_task(GFP_ATOMIC); + int_to_scsilun(0, &lun); + task = sas_alloc_slow_task(pm8001_ha->sas, pm8001_ha_dev->sas_device, + &lun, GFP_ATOMIC); if (!task) { pm8001_dbg(pm8001_ha, FAIL, "cannot allocate task\n"); @@ -1752,8 +1755,10 @@ static void pm8001_send_read_log(struct pm8001_hba_info *pm8001_ha, struct domain_device *dev = pm8001_ha_dev->sas_device; struct inbound_queue_table *circularQ; u32 opc = OPC_INB_SATA_HOST_OPSTART; + struct scsi_lun lun;; - task = sas_alloc_slow_task(GFP_ATOMIC); + int_to_scsilun(0, &lun); + task = sas_alloc_slow_task(pm8001_ha->sas, dev, &lun, GFP_ATOMIC); if (!task) { pm8001_dbg(pm8001_ha, FAIL, "cannot allocate task !!!\n"); diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c index 01e91347eb41..b1f12d671611 100644 --- a/drivers/scsi/pm8001/pm8001_sas.c +++ b/drivers/scsi/pm8001/pm8001_sas.c @@ -717,7 +717,9 @@ static int pm8001_exec_internal_tmf_task(struct domain_device *dev, return TMF_RESP_FUNC_ESUPP; for (retry = 0; retry < 3; retry++) { - task = sas_alloc_slow_task(GFP_KERNEL); + task = sas_alloc_slow_task(pm8001_ha->sas, + pm8001_dev->sas_device, + (struct scsi_lun *)lun, GFP_KERNEL); if (!task) return -ENOMEM; @@ -791,7 +793,7 @@ static int pm8001_exec_internal_tmf_task(struct domain_device *dev, static int pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, - struct pm8001_device *pm8001_dev, u32 flag, + struct pm8001_device *pm8001_dev, u8 *lun, u32 flag, u32 task_tag) { struct domain_device *dev = pm8001_dev->sas_device; @@ -801,7 +803,8 @@ pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, struct sas_task *task = NULL; for (retry = 0; retry < 3; retry++) { - task = sas_alloc_slow_task(GFP_KERNEL); + task = sas_alloc_slow_task(pm8001_ha->sas, dev, + (struct scsi_lun *)lun, GFP_KERNEL); if (!task) return -ENOMEM; @@ -875,13 +878,15 @@ static void pm8001_dev_gone_notify(struct domain_device *dev) spin_lock_irqsave(&pm8001_ha->lock, flags); if (pm8001_dev) { u32 device_id = pm8001_dev->device_id; + struct scsi_lun lun; + int_to_scsilun(0, &lun); pm8001_dbg(pm8001_ha, DISC, "found dev[%d:%x] is gone.\n", pm8001_dev->device_id, pm8001_dev->dev_type); if (atomic_read(&pm8001_dev->running_req)) { spin_unlock_irqrestore(&pm8001_ha->lock, flags); pm8001_exec_internal_task_abort(pm8001_ha, - pm8001_dev, 1, 0); + pm8001_dev, lun.scsi_lun, 1, 0); while (atomic_read(&pm8001_dev->running_req)) msleep(20); spin_lock_irqsave(&pm8001_ha->lock, flags); @@ -991,6 +996,9 @@ int pm8001_I_T_nexus_reset(struct domain_device *dev) phy = sas_get_local_phy(dev); if (dev_is_sata(dev)) { + struct scsi_lun lun; + + int_to_scsilun(0, &lun); if (scsi_is_sas_phy_local(phy)) { rc = 0; goto out; @@ -1005,7 +1013,7 @@ int pm8001_I_T_nexus_reset(struct domain_device *dev) } msleep(2000); rc = pm8001_exec_internal_task_abort(pm8001_ha, - pm8001_dev, 1, 0); + pm8001_dev, lun.scsi_lun, 1, 0); if (rc) { pm8001_dbg(pm8001_ha, EH, "task abort failed %x\n" "with rc %d\n", pm8001_dev->device_id, rc); @@ -1032,7 +1040,9 @@ int pm8001_I_T_nexus_event_handler(struct domain_device *dev) struct pm8001_device *pm8001_dev; struct pm8001_hba_info *pm8001_ha; struct sas_phy *phy; + struct scsi_lun lun; + int_to_scsilun(0, &lun); if (!dev || !dev->lldd_dev) return -1; @@ -1051,7 +1061,7 @@ int pm8001_I_T_nexus_event_handler(struct domain_device *dev) } /* send internal ssp/sata/smp abort command to FW */ rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, - 1, 0); + lun.scsi_lun, 1, 0); msleep(100); /* deregister the target device */ @@ -1067,7 +1077,7 @@ int pm8001_I_T_nexus_event_handler(struct domain_device *dev) } else { /* send internal ssp/sata/smp abort command to FW */ rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, - 1, 0); + lun.scsi_lun, 1, 0); msleep(100); /* deregister the target device */ @@ -1095,8 +1105,8 @@ int pm8001_lu_reset(struct domain_device *dev, u8 *lun) DECLARE_COMPLETION_ONSTACK(completion_setstate); if (dev_is_sata(dev)) { struct sas_phy *phy = sas_get_local_phy(dev); - rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, - 1, 0); + rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , + lun, 1, 0); rc = sas_phy_reset(phy, 1); sas_put_local_phy(phy); pm8001_dev->setds_completion = &completion_setstate; @@ -1211,9 +1221,10 @@ int pm8001_abort_task(struct sas_task *task) &tmf_task); if (rc == TMF_RESP_FUNC_SUCC) pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, - 0, tag); + lun.scsi_lun, 0, tag); } else if (task->task_proto & SAS_PROTOCOL_SATA || task->task_proto & SAS_PROTOCOL_STP) { + memset(lun.scsi_lun, 0, sizeof(lun.scsi_lun)); if (pm8001_ha->chip_id == chip_8006) { DECLARE_COMPLETION_ONSTACK(completion_reset); DECLARE_COMPLETION_ONSTACK(completion); @@ -1280,7 +1291,7 @@ int pm8001_abort_task(struct sas_task *task) * going to free the task. */ ret = pm8001_exec_internal_task_abort(pm8001_ha, - pm8001_dev, 1, tag); + pm8001_dev, lun.scsi_lun, 1, tag); if (ret) goto out; ret = wait_for_completion_timeout( @@ -1297,13 +1308,15 @@ int pm8001_abort_task(struct sas_task *task) wait_for_completion(&completion); } else { rc = pm8001_exec_internal_task_abort(pm8001_ha, - pm8001_dev, 0, tag); + pm8001_dev, lun.scsi_lun, 0, tag); } rc = TMF_RESP_FUNC_COMPLETE; } else if (task->task_proto & SAS_PROTOCOL_SMP) { /* SMP */ + + int_to_scsilun(0, &lun); rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, - 0, tag); + lun.scsi_lun, 0, tag); } out: diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index bc1929b230c4..03bfb4d72895 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.c +++ b/drivers/scsi/pm8001/pm80xx_hwi.c @@ -1772,6 +1772,7 @@ static void pm80xx_send_abort_all(struct pm8001_hba_info *pm8001_ha, struct task_abort_req task_abort; struct inbound_queue_table *circularQ; u32 opc = OPC_INB_SATA_ABORT; + struct scsi_lun lun; int ret; if (!pm8001_ha_dev) { @@ -1779,7 +1780,9 @@ static void pm80xx_send_abort_all(struct pm8001_hba_info *pm8001_ha, return; } - task = sas_alloc_slow_task(GFP_ATOMIC); + int_to_scsilun(0, &lun); + task = sas_alloc_slow_task(pm8001_ha->sas,pm8001_ha_dev->sas_device, + &lun, GFP_ATOMIC); if (!task) { pm8001_dbg(pm8001_ha, FAIL, "cannot allocate task\n"); @@ -1827,8 +1830,10 @@ static void pm80xx_send_read_log(struct pm8001_hba_info *pm8001_ha, struct domain_device *dev = pm8001_ha_dev->sas_device; struct inbound_queue_table *circularQ; u32 opc = OPC_INB_SATA_HOST_OPSTART; + struct scsi_lun lun; - task = sas_alloc_slow_task(GFP_ATOMIC); + int_to_scsilun(0, &lun); + task = sas_alloc_slow_task(pm8001_ha->sas, dev, &lun, GFP_ATOMIC); if (!task) { pm8001_dbg(pm8001_ha, FAIL, "cannot allocate task !!!\n"); diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index 3a024eced38c..9b8c06a8329a 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -349,7 +349,7 @@ struct asd_sas_phy { struct scsi_core { struct Scsi_Host *shost; - + struct scsi_device *shost_dev; }; enum sas_ha_state { @@ -605,6 +605,7 @@ struct sas_task_slow { struct timer_list timer; struct completion completion; struct sas_task *task; + struct scsi_cmnd *scmd; }; #define SAS_TASK_STATE_PENDING 1 @@ -614,7 +615,10 @@ struct sas_task_slow { #define SAS_TASK_AT_INITIATOR 16 extern struct sas_task *sas_alloc_task(gfp_t flags); -extern struct sas_task *sas_alloc_slow_task(gfp_t flags); +extern struct sas_task *sas_alloc_slow_task(struct sas_ha_struct *ha, + struct domain_device *dev, + struct scsi_lun *lun, + gfp_t flags); extern void sas_free_task(struct sas_task *task); struct sas_domain_function_template { From patchwork Mon Feb 22 13:24:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386023 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E99C2C433E0 for ; Mon, 22 Feb 2021 13:31:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A32BB64E40 for ; Mon, 22 Feb 2021 13:31:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231474AbhBVNbL (ORCPT ); Mon, 22 Feb 2021 08:31:11 -0500 Received: from mx2.suse.de ([195.135.220.15]:47810 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231240AbhBVN2Q (ORCPT ); Mon, 22 Feb 2021 08:28:16 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 4C949B01C; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 27/31] libsas: add tag to struct sas_task Date: Mon, 22 Feb 2021 14:24:01 +0100 Message-Id: <20210222132405.91369-28-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org All block layer commands now have a tag, so we should be storing it in the sas_task structure for easier lookup. Signed-off-by: Hannes Reinecke --- drivers/scsi/libsas/sas_ata.c | 4 ++++ drivers/scsi/libsas/sas_init.c | 2 ++ drivers/scsi/libsas/sas_scsi_host.c | 2 +- include/scsi/libsas.h | 2 ++ 4 files changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index 024e5a550759..2b05ca68d091 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -214,6 +214,10 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc) else task->data_dir = qc->dma_dir; task->scatter = qc->sg; + if (qc->scsicmd) + task->tag = qc->scsicmd->request->tag; + else + task->tag = qc->tag; task->ata_task.retry_count = 1; task->task_state_flags = SAS_TASK_STATE_PENDING; qc->lldd_task = task; diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c index 9d0448b76a2f..a2f1789c7a6a 100644 --- a/drivers/scsi/libsas/sas_init.c +++ b/drivers/scsi/libsas/sas_init.c @@ -53,6 +53,7 @@ struct sas_task *sas_alloc_slow_task(struct sas_ha_struct *ha, if (!slow) goto out_err_slow; + task->tag = -1; if (shost->nr_reserved_cmds) { struct scsi_device *sdev; @@ -67,6 +68,7 @@ struct sas_task *sas_alloc_slow_task(struct sas_ha_struct *ha, REQ_NOWAIT); if (!slow->scmd) goto out_err_scmd; + task->tag = slow->scmd->request->tag; ASSIGN_SAS_TASK(slow->scmd, task); } diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c index ae247aed857f..37b9ca483522 100644 --- a/drivers/scsi/libsas/sas_scsi_host.c +++ b/drivers/scsi/libsas/sas_scsi_host.c @@ -149,7 +149,7 @@ static struct sas_task *sas_create_task(struct scsi_cmnd *cmd, memcpy(task->ssp_task.LUN, &lun.scsi_lun, 8); task->ssp_task.task_attr = TASK_ATTR_SIMPLE; task->ssp_task.cmd = cmd; - + task->tag = cmd->request->tag; task->scatter = scsi_sglist(cmd); task->num_scatter = scsi_sg_count(cmd); task->total_xfer_len = scsi_bufflen(cmd); diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index 9b8c06a8329a..d047b7734343 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -590,6 +590,8 @@ struct sas_task { u32 total_xfer_len; u8 data_dir:2; /* Use PCI_DMA_... */ + u32 tag; + struct task_status_struct task_status; void (*task_done)(struct sas_task *); From patchwork Mon Feb 22 13:24:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 385781 Delivered-To: patch@linaro.org Received: by 2002:a02:290e:0:0:0:0:0 with SMTP id p14csp1276453jap; Mon, 22 Feb 2021 05:34:16 -0800 (PST) X-Google-Smtp-Source: ABdhPJxxr9PqUE4gaVj/lUhKWYiOkQL4R5w39lQOX02RSeGUCvK2AAKALIXvSDihVVf5SDpjwt3W X-Received: by 2002:a05:6402:b9a:: with SMTP id cf26mr7568022edb.183.1614000856087; Mon, 22 Feb 2021 05:34:16 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1614000856; cv=none; d=google.com; s=arc-20160816; b=tMdxs8SGdYBW1aim4m/DG8trfkH2VOKk6etOtXinKkYLIF6UQ+zNDzf1oKFbXaGDYq TAMvjjwlSN0X9A5Kjtr4u962x37bS0gG6VrdLVrX0ZP/eTHU+1JVgufMAuZV120YvYDw eAFqIqlkIHkxpGrrXy+2dBvFtDsw+oWMI56p0p9RMKReQPpbZWyljnOYK5+qpbFAbkgG krd0UlwHyNLoodrri2KakkcqRTAkTKihb5vf5h/63buWc7zE2D4vgyb6TPUByigKEJI3 l27eb1oaZvFekN7qUdsJO96+aiWIUCrRUHKT0nze9ZfxGN58jmO3p43EL/+46Vze20Sq ++9Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=/1LC63b/J89nrbdF2vYTJdLsZjNdmnyDk/C9qRxzcvQ=; b=X3UjRAwfbZxiLRNPpd2I9Jji6BCUqX/I2B6H4gqutky58zIy8ZkZC/H9vo/2qLdKR1 AKaPx0zx+DXy5+57GFLqqM4R1QFxGO1exylKijTWKwFu+RdvSisUJUhFIsBHbeaI6mmK yE6+p2ylmKAsoIwmKrjU5wCzBq7vl9rBc086xEHMQ8B7wd0JaSYT19EDV0I6U4xeafW5 zfq8dCcIXD7npHkc0Xozzy6/3RVbQtmiLvSAu/OeBQi3MM+SNGdIvKW6qM8idK9UX9ga Aq4qwn5XRCT88SCNDsqnLAxUaECtZnxtw07OtiaAbsKKUploTxyh4v9QQNsXz1mjVaCG AK9w== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-scsi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-scsi-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id e17si12685682edz.241.2021.02.22.05.34.15 for ; Mon, 22 Feb 2021 05:34:16 -0800 (PST) Received-SPF: pass (google.com: domain of linux-scsi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-scsi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-scsi-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231262AbhBVNcn (ORCPT ); Mon, 22 Feb 2021 08:32:43 -0500 Received: from mx2.suse.de ([195.135.220.15]:48680 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231602AbhBVN2n (ORCPT ); Mon, 22 Feb 2021 08:28:43 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 9261AB113; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org Subject: [PATCH 28/31] scsi: hisi_sas: Use libsas slow task SCSI command Date: Mon, 22 Feb 2021 14:24:02 +0100 Message-Id: <20210222132405.91369-29-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: John Garry Now that a SCSI command can be allocated for a libsas slow tasks, make the task prep code use it. Signed-off-by: John Garry --- drivers/scsi/hisi_sas/hisi_sas_main.c | 17 ++++++++++------- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 5 +++-- 2 files changed, 13 insertions(+), 9 deletions(-) -- 2.29.2 diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 6a69a90a1b82..af653f4393ea 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -179,15 +179,11 @@ static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx) set_bit(slot_idx, bitmap); } -static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, - struct scsi_cmnd *scsi_cmnd) +static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba) { int index; void *bitmap = hisi_hba->slot_index_tags; - if (scsi_cmnd) - return scsi_cmnd->request->tag; - spin_lock(&hisi_hba->lock); index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count, hisi_hba->last_slot_index + 1); @@ -444,6 +440,8 @@ static int hisi_sas_task_prep(struct sas_task *task, } else { scmd = task->uldd_task; } + } else { + scmd = task->slow_task->scmd; } if (scmd) { @@ -484,8 +482,10 @@ static int hisi_sas_task_prep(struct sas_task *task, if (hisi_hba->hw->slot_index_alloc) rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device); + else if (scmd) + rc = scmd->request->tag; else - rc = hisi_sas_slot_index_alloc(hisi_hba, scmd); + rc = hisi_sas_slot_index_alloc(hisi_hba); if (rc < 0) goto err_out_dif_dma_unmap; @@ -1975,7 +1975,9 @@ hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id, port = to_hisi_sas_port(sas_port); /* simply get a slot and send abort command */ - rc = hisi_sas_slot_index_alloc(hisi_hba, NULL); + rc = = task->tag; + if (rc < 0) + rc = hisi_sas_slot_index_alloc(hisi_hba); if (rc < 0) goto err_out; @@ -2683,6 +2685,7 @@ int hisi_sas_probe(struct platform_device *pdev, } else { shost->can_queue = HISI_SAS_UNRESERVED_IPTT; shost->cmd_per_lun = HISI_SAS_UNRESERVED_IPTT; + shost->nr_reserved_cmds = HISI_SAS_RESERVED_IPTT; } sha->sas_ha_name = DRV_NAME; diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 4580e081e489..c728c782e21a 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -4720,8 +4720,9 @@ hisi_sas_v3_probe(struct pci_dev *pdev, const struct pci_device_id *id) shost->max_lun = ~0; shost->max_channel = 1; shost->max_cmd_len = 16; - shost->can_queue = HISI_SAS_UNRESERVED_IPTT; - shost->cmd_per_lun = HISI_SAS_UNRESERVED_IPTT; + shost->can_queue = HISI_SAS_MAX_COMMANDS; + shost->cmd_per_lun = HISI_SAS_MAX_COMMANDS; + shost->nr_reserved_cmds = HISI_SAS_RESERVED_IPTT; sha->sas_ha_name = DRV_NAME; sha->dev = dev; From patchwork Mon Feb 22 13:24:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386018 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B5D9C433E6 for ; Mon, 22 Feb 2021 13:34:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1015F64E5C for ; Mon, 22 Feb 2021 13:34:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231402AbhBVNea (ORCPT ); Mon, 22 Feb 2021 08:34:30 -0500 Received: from mx2.suse.de ([195.135.220.15]:48672 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231403AbhBVN2n (ORCPT ); Mon, 22 Feb 2021 08:28:43 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 58354B027; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 29/31] hisi_sas: use task tag to reference the slot Date: Mon, 22 Feb 2021 14:24:03 +0100 Message-Id: <20210222132405.91369-30-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Use the task task to reference the command slot and drop the internal slot bitmap. Signed-off-by: Hannes Reinecke --- drivers/scsi/hisi_sas/hisi_sas.h | 1 - drivers/scsi/hisi_sas/hisi_sas_main.c | 78 ++------------------------- 2 files changed, 5 insertions(+), 74 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index 2401a9575215..6efe980789ee 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -419,7 +419,6 @@ struct hisi_hba { struct workqueue_struct *wq; int slot_index_count; - int last_slot_index; int last_dev_id; unsigned long *slot_index_tags; unsigned long reject_stp_links_msk; diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index af653f4393ea..6402c4e4befa 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -155,62 +155,6 @@ void hisi_sas_stop_phys(struct hisi_hba *hisi_hba) } EXPORT_SYMBOL_GPL(hisi_sas_stop_phys); -static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx) -{ - void *bitmap = hisi_hba->slot_index_tags; - - clear_bit(slot_idx, bitmap); -} - -static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx) -{ - if (hisi_hba->hw->slot_index_alloc || - slot_idx >= HISI_SAS_UNRESERVED_IPTT) { - spin_lock(&hisi_hba->lock); - hisi_sas_slot_index_clear(hisi_hba, slot_idx); - spin_unlock(&hisi_hba->lock); - } -} - -static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx) -{ - void *bitmap = hisi_hba->slot_index_tags; - - set_bit(slot_idx, bitmap); -} - -static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba) -{ - int index; - void *bitmap = hisi_hba->slot_index_tags; - - spin_lock(&hisi_hba->lock); - index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count, - hisi_hba->last_slot_index + 1); - if (index >= hisi_hba->slot_index_count) { - index = find_next_zero_bit(bitmap, - hisi_hba->slot_index_count, - HISI_SAS_UNRESERVED_IPTT); - if (index >= hisi_hba->slot_index_count) { - spin_unlock(&hisi_hba->lock); - return -SAS_QUEUE_FULL; - } - } - hisi_sas_slot_index_set(hisi_hba, index); - hisi_hba->last_slot_index = index; - spin_unlock(&hisi_hba->lock); - - return index; -} - -static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba) -{ - int i; - - for (i = 0; i < hisi_hba->slot_index_count; ++i) - hisi_sas_slot_index_clear(hisi_hba, i); -} - void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, struct hisi_sas_slot *slot) { @@ -246,8 +190,6 @@ void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, spin_unlock(&sas_dev->lock); memset(slot, 0, offsetof(struct hisi_sas_slot, buf)); - - hisi_sas_slot_index_free(hisi_hba, slot->idx); } EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free); @@ -482,10 +424,8 @@ static int hisi_sas_task_prep(struct sas_task *task, if (hisi_hba->hw->slot_index_alloc) rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device); - else if (scmd) - rc = scmd->request->tag; else - rc = hisi_sas_slot_index_alloc(hisi_hba); + rc = scmd->request->tag; if (rc < 0) goto err_out_dif_dma_unmap; @@ -1975,9 +1915,10 @@ hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id, port = to_hisi_sas_port(sas_port); /* simply get a slot and send abort command */ - rc = = task->tag; - if (rc < 0) - rc = hisi_sas_slot_index_alloc(hisi_hba); + if (hisi_hha->hw->slot_index_alloc) + rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device); + else + rc = = task->tag; if (rc < 0) goto err_out; @@ -2440,12 +2381,6 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba) if (!hisi_hba->breakpoint) goto err_out; - hisi_hba->slot_index_count = max_command_entries; - s = hisi_hba->slot_index_count / BITS_PER_BYTE; - hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL); - if (!hisi_hba->slot_index_tags) - goto err_out; - s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; hisi_hba->initial_fis = dmam_alloc_coherent(dev, s, &hisi_hba->initial_fis_dma, @@ -2460,9 +2395,6 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba) if (!hisi_hba->sata_breakpoint) goto err_out; - hisi_sas_slot_index_init(hisi_hba); - hisi_hba->last_slot_index = HISI_SAS_UNRESERVED_IPTT; - hisi_hba->wq = create_singlethread_workqueue(dev_name(dev)); if (!hisi_hba->wq) { dev_err(dev, "sas_alloc: failed to create workqueue\n"); From patchwork Mon Feb 22 13:24:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386022 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73C65C433E9 for ; Mon, 22 Feb 2021 13:32:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 41FEB64E74 for ; Mon, 22 Feb 2021 13:32:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230431AbhBVNcC (ORCPT ); Mon, 22 Feb 2021 08:32:02 -0500 Received: from mx2.suse.de ([195.135.220.15]:48682 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230368AbhBVN2o (ORCPT ); Mon, 22 Feb 2021 08:28:44 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id B4208B114; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 30/31] mv_sas: use reserved tags and drop private tag allocation Date: Mon, 22 Feb 2021 14:24:04 +0100 Message-Id: <20210222132405.91369-31-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Switch to use reserved tags. With that all tags are maintained by the block layer and we can drop the private tag allocation. Signed-off-by: Hannes Reinecke --- drivers/scsi/mvsas/mv_init.c | 10 +--- drivers/scsi/mvsas/mv_sas.c | 98 ++++++++---------------------------- drivers/scsi/mvsas/mv_sas.h | 13 +++-- 3 files changed, 27 insertions(+), 94 deletions(-) diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c index 6aa2697c4a15..befcce55a705 100644 --- a/drivers/scsi/mvsas/mv_init.c +++ b/drivers/scsi/mvsas/mv_init.c @@ -142,7 +142,6 @@ 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); } @@ -284,10 +283,6 @@ 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; - - /* Initialize tags */ - mvs_tag_init(mvi); return 0; err_out: return 1; @@ -369,10 +364,6 @@ 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) - goto err_out; - if (MVS_CHIP_DISP->chip_ioremap(mvi)) goto err_out; if (!mvs_alloc(mvi, shost)) @@ -471,6 +462,7 @@ static void mvs_post_sas_ha_init(struct Scsi_Host *shost, else can_queue = MVS_CHIP_SLOT_SZ; + shost->nr_reserved_cmds = 2; 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 99bdb88b3e86..a2b52a67bfa7 100644 --- a/drivers/scsi/mvsas/mv_sas.c +++ b/drivers/scsi/mvsas/mv_sas.c @@ -9,55 +9,6 @@ #include "mv_sas.h" -static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag) -{ - if (task->lldd_task) { - struct mvs_slot_info *slot; - slot = task->lldd_task; - *tag = slot->slot_tag; - return 1; - } - return 0; -} - -void mvs_tag_clear(struct mvs_info *mvi, u32 tag) -{ - void *bitmap = mvi->tags; - clear_bit(tag, bitmap); -} - -void mvs_tag_free(struct mvs_info *mvi, u32 tag) -{ - mvs_tag_clear(mvi, tag); -} - -void mvs_tag_set(struct mvs_info *mvi, unsigned int tag) -{ - void *bitmap = mvi->tags; - set_bit(tag, bitmap); -} - -inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out) -{ - unsigned int index, tag; - void *bitmap = mvi->tags; - - index = find_first_zero_bit(bitmap, mvi->tags_num); - tag = index; - if (tag >= mvi->tags_num) - return -SAS_QUEUE_FULL; - mvs_tag_set(mvi, tag); - *tag_out = tag; - 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; @@ -762,10 +713,13 @@ 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) + if (task->tag == -1) { + dev_printk(KERN_ERR, mvi->dev, + "invalid sas_task tag\n"); + rc = -EINVAL; goto err_out; - + } + tag = task->tag; slot = &mvi->slot_info[tag]; task->lldd_task = NULL; @@ -775,7 +729,7 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf slot->buf = dma_pool_zalloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma); if (!slot->buf) { rc = -ENOMEM; - goto err_out_tag; + goto err_out; } tei.task = task; @@ -822,8 +776,6 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf err_out_slot_buf: dma_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma); -err_out_tag: - mvs_tag_free(mvi, tag); err_out: dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc); @@ -864,12 +816,6 @@ int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags) return mvs_task_exec(task, gfp_flags, NULL, 0, NULL); } -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); -} - static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task, struct mvs_slot_info *slot, u32 slot_idx) { @@ -907,7 +853,6 @@ static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task, slot->task = NULL; slot->port = NULL; slot->slot_tag = 0xFFFFFFFF; - mvs_slot_free(mvi, slot_idx); } static void mvs_update_wideport(struct mvs_info *mvi, int phy_no) @@ -1416,7 +1361,6 @@ int mvs_I_T_nexus_reset(struct domain_device *dev) /* optional SAM-3 */ int mvs_query_task(struct sas_task *task) { - u32 tag; struct scsi_lun lun; struct mvs_tmf_task tmf_task; int rc = TMF_RESP_FUNC_FAILED; @@ -1424,18 +1368,15 @@ int mvs_query_task(struct sas_task *task) if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task; struct domain_device *dev = task->dev; - struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; - struct mvs_info *mvi = mvi_dev->mvi_info; int_to_scsilun(cmnd->device->lun, &lun); - rc = mvs_find_tag(mvi, task, &tag); - if (rc == 0) { + if (task->tag == -1) { rc = TMF_RESP_FUNC_FAILED; return rc; } tmf_task.tmf = TMF_QUERY_TASK; - tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); + tmf_task.tag_of_task_to_be_managed = cpu_to_le16(task->tag); rc = mvs_exec_internal_tmf_task(dev, lun.scsi_lun, &tmf_task); switch (rc) { @@ -1461,7 +1402,6 @@ int mvs_abort_task(struct sas_task *task) struct mvs_info *mvi; int rc = TMF_RESP_FUNC_FAILED; unsigned long flags; - u32 tag; if (!mvi_dev) { mv_printk("Device has removed\n"); @@ -1482,15 +1422,14 @@ int mvs_abort_task(struct sas_task *task) struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task; int_to_scsilun(cmnd->device->lun, &lun); - rc = mvs_find_tag(mvi, task, &tag); - if (rc == 0) { + if (task->tag == -1) { mv_printk("No such tag in %s\n", __func__); rc = TMF_RESP_FUNC_FAILED; return rc; } tmf_task.tmf = TMF_ABORT_TASK; - tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); + tmf_task.tag_of_task_to_be_managed = cpu_to_le16(task->tag); rc = mvs_exec_internal_tmf_task(dev, lun.scsi_lun, &tmf_task); @@ -1712,7 +1651,8 @@ int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags) ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR); task->task_state_flags |= SAS_TASK_STATE_DONE; /* race condition*/ - aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED; + aborted = (task->task_state_flags & SAS_TASK_STATE_ABORTED) || + (flags & MVS_SLOT_CMPL_SLOT_RESET); spin_unlock(&task->task_state_lock); memset(tstat, 0, sizeof(*tstat)); @@ -1730,7 +1670,7 @@ int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags) } /* when no device attaching, go ahead and complete by error handling*/ - if (unlikely(!mvi_dev || flags)) { + if (unlikely(!mvi_dev || (flags & MVS_SLOT_CMPL_PHY_GONE))) { if (!mvi_dev) mv_dprintk("port has not device.\n"); tstat->stat = SAS_PHY_DOWN; @@ -1843,7 +1783,7 @@ void mvs_do_release_task(struct mvs_info *mvi, slot_idx, slot->slot_tag, task); MVS_CHIP_DISP->command_active(mvi, slot_idx); - mvs_slot_complete(mvi, slot_idx, 1); + mvs_slot_complete(mvi, slot_idx, MVS_SLOT_CMPL_PHY_GONE); } } @@ -2064,14 +2004,16 @@ int mvs_int_rx(struct mvs_info *mvi, bool self_clear) rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]); if (likely(rx_desc & RXQ_DONE)) - mvs_slot_complete(mvi, rx_desc, 0); + mvs_slot_complete(mvi, rx_desc, MVS_SLOT_CMPL_NONE); if (rx_desc & RXQ_ATTN) { attn = true; } else if (rx_desc & RXQ_ERR) { if (!(rx_desc & RXQ_DONE)) - mvs_slot_complete(mvi, rx_desc, 0); + mvs_slot_complete(mvi, rx_desc, + MVS_SLOT_CMPL_NONE); } else if (rx_desc & RXQ_SLOT_RESET) { - mvs_slot_free(mvi, rx_desc); + mvs_slot_complete(mvi, rx_desc, + MVS_SLOT_CMPL_SLOT_RESET); } } diff --git a/drivers/scsi/mvsas/mv_sas.h b/drivers/scsi/mvsas/mv_sas.h index 327fdd5ee962..480a5129eff4 100644 --- a/drivers/scsi/mvsas/mv_sas.h +++ b/drivers/scsi/mvsas/mv_sas.h @@ -83,6 +83,12 @@ enum dev_reset { MVS_PHY_TUNE = 2, }; +enum mvs_slot_complete_flags { + MVS_SLOT_CMPL_NONE = 0, + MVS_SLOT_CMPL_PHY_GONE = 1, + MVS_SLOT_CMPL_SLOT_RESET = 2, +}; + struct mvs_info; struct mvs_prv_info; @@ -370,8 +376,6 @@ struct mvs_info { u32 chip_id; const struct mvs_chip_info *chip; - int tags_num; - unsigned long *tags; /* further per-slot information */ struct mvs_phy phy[MVS_MAX_PHYS]; struct mvs_port port[MVS_MAX_PHYS]; @@ -424,11 +428,6 @@ 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_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 Mon Feb 22 13:24:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 386496 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B610C433E0 for ; Mon, 22 Feb 2021 13:32:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CA08664DD0 for ; Mon, 22 Feb 2021 13:32:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231745AbhBVNbz (ORCPT ); Mon, 22 Feb 2021 08:31:55 -0500 Received: from mx2.suse.de ([195.135.220.15]:48678 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231573AbhBVN2p (ORCPT ); Mon, 22 Feb 2021 08:28:45 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 6C69AB048; Mon, 22 Feb 2021 13:24:16 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 31/31] pm8001: use block-layer tags for ccb allocation Date: Mon, 22 Feb 2021 14:24:05 +0100 Message-Id: <20210222132405.91369-32-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210222132405.91369-1-hare@suse.de> References: <20210222132405.91369-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Always allocate a command from the block layer whenever we need a tag. With that we can drop the internal ccb bitmap and allow the block layer control tag allocation. Signed-off-by: Hannes Reinecke --- drivers/scsi/pm8001/pm8001_hwi.c | 131 +++++++++++++++--------------- drivers/scsi/pm8001/pm8001_init.c | 24 +++--- drivers/scsi/pm8001/pm8001_sas.c | 107 +++++++++--------------- drivers/scsi/pm8001/pm8001_sas.h | 14 ++-- drivers/scsi/pm8001/pm80xx_hwi.c | 119 +++++++++++++-------------- 5 files changed, 183 insertions(+), 212 deletions(-) diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c index 105962b0c815..4bb3debc7458 100644 --- a/drivers/scsi/pm8001/pm8001_hwi.c +++ b/drivers/scsi/pm8001/pm8001_hwi.c @@ -1554,13 +1554,14 @@ void pm8001_work_fn(struct work_struct *work) t->task_state_flags |= SAS_TASK_STATE_DONE; if (unlikely((t->task_state_flags & SAS_TASK_STATE_ABORTED))) { spin_unlock_irqrestore(&t->task_state_lock, flags1); - pm8001_dbg(pm8001_ha, FAIL, "task 0x%p done with event 0x%x resp 0x%x stat 0x%x but aborted by upper layer!\n", + pm8001_dbg(pm8001_ha, FAIL, "task 0x%p done with event 0x%x " + "resp 0x%x stat 0x%x but aborted by upper layer!\n", t, pw->handler, ts->resp, ts->stat); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); spin_unlock_irqrestore(&pm8001_ha->lock, flags); } else { spin_unlock_irqrestore(&t->task_state_lock, flags1); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); mb();/* in order to force CPU ordering */ spin_unlock_irqrestore(&pm8001_ha->lock, flags); t->task_done(t); @@ -1694,8 +1695,6 @@ int pm8001_handle_event(struct pm8001_hba_info *pm8001_ha, void *data, static void pm8001_send_abort_all(struct pm8001_hba_info *pm8001_ha, struct pm8001_device *pm8001_ha_dev) { - int res; - u32 ccb_tag; struct pm8001_ccb_info *ccb; struct sas_task *task = NULL; struct task_abort_req task_abort; @@ -1720,13 +1719,16 @@ static void pm8001_send_abort_all(struct pm8001_hba_info *pm8001_ha, task->task_done = pm8001_task_done; - res = pm8001_tag_alloc(pm8001_ha, &ccb_tag); - if (res) + if (task->tag == -1) { + sas_free_task(task); + pm8001_dbg(pm8001_ha, FAIL, + "cannot allocate tag\n"); return; + } - ccb = &pm8001_ha->ccb_info[ccb_tag]; + ccb = &pm8001_ha->ccb_info[task->tag]; ccb->device = pm8001_ha_dev; - ccb->ccb_tag = ccb_tag; + ccb->ccb_tag = task->tag; ccb->task = task; circularQ = &pm8001_ha->inbnd_q_tbl[0]; @@ -1734,13 +1736,12 @@ static void pm8001_send_abort_all(struct pm8001_hba_info *pm8001_ha, memset(&task_abort, 0, sizeof(task_abort)); task_abort.abort_all = cpu_to_le32(1); task_abort.device_id = cpu_to_le32(pm8001_ha_dev->device_id); - task_abort.tag = cpu_to_le32(ccb_tag); + task_abort.tag = cpu_to_le32(task->tag); ret = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc, &task_abort, sizeof(task_abort), 0); if (ret) - pm8001_tag_free(pm8001_ha, ccb_tag); - + sas_free_task(task); } static void pm8001_send_read_log(struct pm8001_hba_info *pm8001_ha, @@ -1748,7 +1749,6 @@ static void pm8001_send_read_log(struct pm8001_hba_info *pm8001_ha, { struct sata_start_req sata_cmd; int res; - u32 ccb_tag; struct pm8001_ccb_info *ccb; struct sas_task *task = NULL; struct host_to_dev_fis fis; @@ -1766,8 +1766,7 @@ static void pm8001_send_read_log(struct pm8001_hba_info *pm8001_ha, } task->task_done = pm8001_task_done; - res = pm8001_tag_alloc(pm8001_ha, &ccb_tag); - if (res) { + if (task->tag == -1) { sas_free_task(task); pm8001_dbg(pm8001_ha, FAIL, "cannot allocate tag !!!\n"); return; @@ -1776,9 +1775,9 @@ static void pm8001_send_read_log(struct pm8001_hba_info *pm8001_ha, task->dev = dev; task->dev->lldd_dev = pm8001_ha_dev; - ccb = &pm8001_ha->ccb_info[ccb_tag]; + ccb = &pm8001_ha->ccb_info[task->tag]; ccb->device = pm8001_ha_dev; - ccb->ccb_tag = ccb_tag; + ccb->ccb_tag = task->tag; ccb->task = task; pm8001_ha_dev->id |= NCQ_READ_LOG_FLAG; pm8001_ha_dev->id |= NCQ_2ND_RLE_FLAG; @@ -1794,17 +1793,15 @@ static void pm8001_send_read_log(struct pm8001_hba_info *pm8001_ha, fis.lbal = 0x10; fis.sector_count = 0x1; - sata_cmd.tag = cpu_to_le32(ccb_tag); + sata_cmd.tag = cpu_to_le32(task->tag); sata_cmd.device_id = cpu_to_le32(pm8001_ha_dev->device_id); sata_cmd.ncqtag_atap_dir_m |= ((0x1 << 7) | (0x5 << 9)); memcpy(&sata_cmd.sata_fis, &fis, sizeof(struct host_to_dev_fis)); res = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc, &sata_cmd, sizeof(sata_cmd), 0); - if (res) { + if (res) sas_free_task(task); - pm8001_tag_free(pm8001_ha, ccb_tag); - } } /** @@ -2039,12 +2036,13 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb) t->task_state_flags |= SAS_TASK_STATE_DONE; if (unlikely((t->task_state_flags & SAS_TASK_STATE_ABORTED))) { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_dbg(pm8001_ha, FAIL, "task 0x%p done with io_status 0x%x resp 0x%x stat 0x%x but aborted by upper layer!\n", + pm8001_dbg(pm8001_ha, FAIL, "task 0x%p done with io_status 0x%x " + "resp 0x%x stat 0x%x but aborted by upper layer!\n", t, status, ts->resp, ts->stat); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); } else { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); mb();/* in order to force CPU ordering */ t->task_done(t); } @@ -2207,12 +2205,13 @@ static void mpi_ssp_event(struct pm8001_hba_info *pm8001_ha , void *piomb) t->task_state_flags |= SAS_TASK_STATE_DONE; if (unlikely((t->task_state_flags & SAS_TASK_STATE_ABORTED))) { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_dbg(pm8001_ha, FAIL, "task 0x%p done with event 0x%x resp 0x%x stat 0x%x but aborted by upper layer!\n", + pm8001_dbg(pm8001_ha, FAIL, "task 0x%p done with event 0x%x " + "resp 0x%x stat 0x%x but aborted by upper layer!\n", t, event, ts->resp, ts->stat); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); } else { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); mb();/* in order to force CPU ordering */ t->task_done(t); } @@ -2336,8 +2335,6 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) /* clear bit for read log */ pm8001_dev->id = pm8001_dev->id & 0x7FFFFFFF; pm8001_send_abort_all(pm8001_ha, pm8001_dev); - /* Free the tag */ - pm8001_tag_free(pm8001_ha, tag); sas_free_task(t); return; } @@ -2450,7 +2447,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS); ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2466,7 +2463,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS); ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2488,7 +2485,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) IO_OPEN_CNX_ERROR_STP_RESOURCES_BUSY); ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2559,7 +2556,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) IO_DS_NON_OPERATIONAL); ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2579,7 +2576,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) IO_DS_IN_ERROR); ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2608,12 +2605,13 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) if (unlikely((t->task_state_flags & SAS_TASK_STATE_ABORTED))) { spin_unlock_irqrestore(&t->task_state_lock, flags); pm8001_dbg(pm8001_ha, FAIL, - "task 0x%p done with io_status 0x%x resp 0x%x stat 0x%x but aborted by upper layer!\n", + "task 0x%p done with io_status 0x%x resp 0x%x " + "stat 0x%x but aborted by upper layer!\n", t, status, ts->resp, ts->stat); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); } else { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); } } @@ -2713,7 +2711,7 @@ static void mpi_sata_event(struct pm8001_hba_info *pm8001_ha , void *piomb) IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS); ts->resp = SAS_TASK_COMPLETE; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2806,12 +2804,13 @@ static void mpi_sata_event(struct pm8001_hba_info *pm8001_ha , void *piomb) if (unlikely((t->task_state_flags & SAS_TASK_STATE_ABORTED))) { spin_unlock_irqrestore(&t->task_state_lock, flags); pm8001_dbg(pm8001_ha, FAIL, - "task 0x%p done with io_status 0x%x resp 0x%x stat 0x%x but aborted by upper layer!\n", + "task 0x%p done with io_status 0x%x resp 0x%x " + "stat 0x%x but aborted by upper layer!\n", t, event, ts->resp, ts->stat); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); } else { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); } } @@ -2990,12 +2989,13 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) t->task_state_flags |= SAS_TASK_STATE_DONE; if (unlikely((t->task_state_flags & SAS_TASK_STATE_ABORTED))) { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_dbg(pm8001_ha, FAIL, "task 0x%p done with io_status 0x%x resp 0x%x stat 0x%x but aborted by upper layer!\n", + pm8001_dbg(pm8001_ha, FAIL, "task 0x%p done with io_status 0x%x " + "resp 0x%x stat 0x%x but aborted by upper layer!\n", t, status, ts->resp, ts->stat); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); } else { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); mb();/* in order to force CPU ordering */ t->task_done(t); } @@ -3659,11 +3659,10 @@ int pm8001_mpi_task_abort_resp(struct pm8001_hba_info *pm8001_ha, void *piomb) t->task_state_flags &= ~SAS_TASK_AT_INITIATOR; t->task_state_flags |= SAS_TASK_STATE_DONE; spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); mb(); if (pm8001_dev->id & NCQ_ABORT_ALL_FLAG) { - pm8001_tag_free(pm8001_ha, tag); sas_free_task(t); /* clear the flag */ pm8001_dev->id &= 0xBFFFFFFF; @@ -4301,15 +4300,15 @@ static int pm8001_chip_sata_req(struct pm8001_hba_info *pm8001_ha, spin_unlock_irqrestore(&task->task_state_lock, flags); pm8001_dbg(pm8001_ha, FAIL, - "task 0x%p resp 0x%x stat 0x%x but aborted by upper layer\n", + "task 0x%p resp 0x%x stat 0x%x but " + "aborted by upper layer\n", task, ts->resp, ts->stat); - pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, task, ccb); } else { spin_unlock_irqrestore(&task->task_state_lock, flags); - pm8001_ccb_task_free_done(pm8001_ha, task, - ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, task, ccb); return 0; } } @@ -4398,9 +4397,9 @@ static int pm8001_chip_reg_dev_req(struct pm8001_hba_info *pm8001_ha, circularQ = &pm8001_ha->inbnd_q_tbl[0]; memset(&payload, 0, sizeof(payload)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) - return rc; + tag = pm8001_tag_alloc(pm8001_ha, dev); + if (tag == -1) + return -SAS_QUEUE_FULL; ccb = &pm8001_ha->ccb_info[tag]; ccb->device = pm8001_dev; ccb->ccb_tag = tag; @@ -4434,6 +4433,8 @@ static int pm8001_chip_reg_dev_req(struct pm8001_hba_info *pm8001_ha, SAS_ADDR_SIZE); rc = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc, &payload, sizeof(payload), 0); + if (rc) + pm8001_tag_free(pm8001_ha, tag); return rc; } @@ -4612,10 +4613,10 @@ int pm8001_chip_get_nvmd_req(struct pm8001_hba_info *pm8001_ha, fw_control_context->len = ioctl_payload->rd_length; circularQ = &pm8001_ha->inbnd_q_tbl[0]; memset(&nvmd_req, 0, sizeof(nvmd_req)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) { + tag = pm8001_tag_alloc(pm8001_ha, NULL); + if (tag == -1) { kfree(fw_control_context); - return rc; + return -SAS_QUEUE_FULL; } ccb = &pm8001_ha->ccb_info[tag]; ccb->ccb_tag = tag; @@ -4708,8 +4709,8 @@ int pm8001_chip_set_nvmd_req(struct pm8001_hba_info *pm8001_ha, &ioctl_payload->func_specific, ioctl_payload->wr_length); memset(&nvmd_req, 0, sizeof(nvmd_req)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) { + tag = pm8001_tag_alloc(pm8001_ha, NULL); + if (tag == -1) { kfree(fw_control_context); return -EBUSY; } @@ -4836,8 +4837,8 @@ pm8001_chip_fw_flash_update_req(struct pm8001_hba_info *pm8001_ha, fw_control_context->virtAddr = buffer; fw_control_context->phys_addr = phys_addr; fw_control_context->len = fw_control->len; - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) { + tag = pm8001_tag_alloc(pm8001_ha, NULL); + if (tag == -1) { kfree(fw_control_context); return -EBUSY; } @@ -4938,8 +4939,8 @@ pm8001_chip_set_dev_state_req(struct pm8001_hba_info *pm8001_ha, u32 tag; u32 opc = OPC_INB_SET_DEVICE_STATE; memset(&payload, 0, sizeof(payload)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) + tag = pm8001_tag_alloc(pm8001_ha, pm8001_dev->sas_device); + if (tag == -1) return -1; ccb = &pm8001_ha->ccb_info[tag]; ccb->ccb_tag = tag; @@ -4950,6 +4951,8 @@ pm8001_chip_set_dev_state_req(struct pm8001_hba_info *pm8001_ha, payload.nds = cpu_to_le32(state); rc = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc, &payload, sizeof(payload), 0); + if (rc) + pm8001_tag_free(pm8001_ha, tag); return rc; } @@ -4964,8 +4967,8 @@ pm8001_chip_sas_re_initialization(struct pm8001_hba_info *pm8001_ha) u32 tag; u32 opc = OPC_INB_SAS_RE_INITIALIZE; memset(&payload, 0, sizeof(payload)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) + tag = pm8001_tag_alloc(pm8001_ha, NULL); + if (tag == -1) return -ENOMEM; ccb = &pm8001_ha->ccb_info[tag]; ccb->ccb_tag = tag; diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c index bd626ef876da..93eb1dcf03bc 100644 --- a/drivers/scsi/pm8001/pm8001_init.c +++ b/drivers/scsi/pm8001/pm8001_init.c @@ -177,7 +177,6 @@ static void pm8001_free(struct pm8001_hba_info *pm8001_ha) } PM8001_CHIP_DISP->chip_iounmap(pm8001_ha); flush_workqueue(pm8001_wq); - kfree(pm8001_ha->tags); kfree(pm8001_ha); } @@ -263,14 +262,13 @@ static u32 pm8001_request_irq(struct pm8001_hba_info *pm8001_ha); * @ent: PCI device ID structure to match on */ static int pm8001_alloc(struct pm8001_hba_info *pm8001_ha, - const struct pci_device_id *ent) + const struct pci_device_id *ent) { int i, count = 0, rc = 0; u32 ci_offset, ib_offset, ob_offset, pi_offset; struct inbound_queue_table *circularQ; spin_lock_init(&pm8001_ha->lock); - spin_lock_init(&pm8001_ha->bitmap_lock); pm8001_dbg(pm8001_ha, INIT, "pm8001_alloc: PHY:%x\n", pm8001_ha->chip->n_phy); @@ -414,8 +412,6 @@ 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_shost: @@ -621,7 +617,7 @@ static int pm8001_prep_sas_ha_init(struct Scsi_Host *shost, * @shost: scsi host which has been allocated outside * @chip_info: our ha struct. */ -static void pm8001_post_sas_ha_init(struct Scsi_Host *shost, +static bool pm8001_post_sas_ha_init(struct Scsi_Host *shost, const struct pm8001_chip_info *chip_info) { int i = 0; @@ -642,6 +638,12 @@ static void pm8001_post_sas_ha_init(struct Scsi_Host *shost, sha->sas_addr = &pm8001_ha->sas_addr[0]; sha->num_phys = chip_info->n_phy; sha->core.shost = shost; + + pm8001_ha->host_dev = scsi_get_host_dev(pm8001_ha->shost); + if (!pm8001_ha->host_dev) + return false; + + return true; } /** @@ -1136,7 +1138,11 @@ static int pm8001_pci_probe(struct pci_dev *pdev, if (rc) goto err_out_shost; - pm8001_post_sas_ha_init(shost, chip); + if (!pm8001_post_sas_ha_init(shost, chip)) { + pm8001_dbg(pm8001_ha, FAIL, + "pm8001_post_sas_ha_init failed\n"); + goto err_out_shost; + } rc = sas_register_ha(SHOST_TO_SAS_HA(shost)); if (rc) { pm8001_dbg(pm8001_ha, FAIL, @@ -1184,10 +1190,6 @@ pm8001_init_ccb_tag(struct pm8001_hba_info *pm8001_ha, struct Scsi_Host *shost, can_queue = ccb_count - PM8001_RESERVE_SLOT; shost->can_queue = can_queue; - pm8001_ha->tags = kzalloc(ccb_count, GFP_KERNEL); - if (!pm8001_ha->tags) - goto err_out; - /* Memory region for ccb_info*/ pm8001_ha->ccb_info = kcalloc(ccb_count, sizeof(struct pm8001_ccb_info), GFP_KERNEL); diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c index b1f12d671611..ae15e690a856 100644 --- a/drivers/scsi/pm8001/pm8001_sas.c +++ b/drivers/scsi/pm8001/pm8001_sas.c @@ -41,22 +41,6 @@ #include #include "pm8001_sas.h" -/** - * pm8001_find_tag - from sas task to find out tag that belongs to this task - * @task: the task sent to the LLDD - * @tag: the found tag associated with the task - */ -static int pm8001_find_tag(struct sas_task *task, u32 *tag) -{ - if (task->lldd_task) { - struct pm8001_ccb_info *ccb; - ccb = task->lldd_task; - *tag = ccb->ccb_tag; - return 1; - } - return 0; -} - /** * pm8001_tag_free - free the no more needed tag * @pm8001_ha: our hba struct @@ -64,38 +48,33 @@ 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; - clear_bit(tag, bitmap); + struct scsi_cmnd *scmd = scsi_host_find_tag(pm8001_ha->shost, tag); + struct sas_task *task; + + if (WARN_ON(!scmd)) + return; + task = (void *)scmd->host_scribble; + sas_free_task(task); } /** * pm8001_tag_alloc - allocate a empty tag for task used. * @pm8001_ha: our hba struct - * @tag_out: the found empty tag . + * @dev: device from which the tag should be allocated or NULL */ -inline int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out) +inline u32 pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, + struct domain_device *dev) { - unsigned int tag; - void *bitmap = pm8001_ha->tags; - unsigned long flags; + struct sas_task *task; + struct scsi_lun lun; - spin_lock_irqsave(&pm8001_ha->bitmap_lock, flags); - tag = find_first_zero_bit(bitmap, pm8001_ha->tags_num); - if (tag >= pm8001_ha->tags_num) { - spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags); - return -SAS_QUEUE_FULL; - } - set_bit(tag, bitmap); - spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags); - *tag_out = tag; - return 0; -} + int_to_scsilun(0, &lun); + task = sas_alloc_slow_task(pm8001_ha->sas, dev, + &lun, GFP_KERNEL); + if (!task) + return -1; -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); + return task->tag; } /** @@ -381,7 +360,7 @@ static int pm8001_task_exec(struct sas_task *task, struct pm8001_port *port = NULL; struct sas_task *t = task; struct pm8001_ccb_info *ccb; - u32 tag = 0xdeadbeef, rc = 0, n_elem = 0; + u32 rc = 0, n_elem = 0; unsigned long flags = 0; enum sas_protocol task_proto = t->task_proto; @@ -425,10 +404,13 @@ static int pm8001_task_exec(struct sas_task *task, continue; } } - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) + if (task->tag == -1) { + dev_printk(KERN_ERR, pm8001_ha->dev, + "invalid sas_task tag\n"); + rc = -EINVAL; goto err_out; - ccb = &pm8001_ha->ccb_info[tag]; + } + ccb = &pm8001_ha->ccb_info[task->tag]; if (!sas_protocol_ata(task_proto)) { if (t->num_scatter) { @@ -438,7 +420,7 @@ static int pm8001_task_exec(struct sas_task *task, t->data_dir); if (!n_elem) { rc = -ENOMEM; - goto err_out_tag; + goto err_out; } } } else { @@ -447,7 +429,7 @@ static int pm8001_task_exec(struct sas_task *task, t->lldd_task = ccb; ccb->n_elem = n_elem; - ccb->ccb_tag = tag; + ccb->ccb_tag = task->tag; ccb->task = t; ccb->device = pm8001_dev; switch (task_proto) { @@ -477,8 +459,7 @@ static int pm8001_task_exec(struct sas_task *task, if (rc) { pm8001_dbg(pm8001_ha, IO, "rc is %x\n", rc); - atomic_dec(&pm8001_dev->running_req); - goto err_out_tag; + goto err_out; } /* TODO: select normal or high priority */ spin_lock(&t->task_state_lock); @@ -488,8 +469,6 @@ static int pm8001_task_exec(struct sas_task *task, rc = 0; goto out_done; -err_out_tag: - pm8001_tag_free(pm8001_ha, tag); err_out: dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc); if (!sas_protocol_ata(task_proto)) @@ -517,10 +496,9 @@ int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags) * @pm8001_ha: our hba card information * @ccb: the ccb which attached to ssp task * @task: the task to be free. - * @ccb_idx: ccb index. */ void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha, - struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx) + struct sas_task *task, struct pm8001_ccb_info *ccb) { if (!ccb->task) return; @@ -548,7 +526,6 @@ void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha, ccb->task = NULL; ccb->ccb_tag = 0xFFFFFFFF; ccb->open_retry = 0; - pm8001_tag_free(pm8001_ha, ccb_idx); } /** @@ -798,7 +775,6 @@ pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, { struct domain_device *dev = pm8001_dev->sas_device; int res, retry; - u32 ccb_tag; struct pm8001_ccb_info *ccb; struct sas_task *task = NULL; @@ -815,17 +791,17 @@ pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ; add_timer(&task->slow_task->timer); - res = pm8001_tag_alloc(pm8001_ha, &ccb_tag); - if (res) - goto ex_err; - ccb = &pm8001_ha->ccb_info[ccb_tag]; + if (task->tag == -1) + return -SAS_QUEUE_FULL; + + ccb = &pm8001_ha->ccb_info[task->tag]; ccb->device = pm8001_dev; - ccb->ccb_tag = ccb_tag; + ccb->ccb_tag = task->tag; ccb->task = task; ccb->n_elem = 0; res = PM8001_CHIP_DISP->task_abort(pm8001_ha, - pm8001_dev, flag, task_tag, ccb_tag); + pm8001_dev, flag, task_tag, task->tag); if (res) { del_timer(&task->slow_task->timer); @@ -961,11 +937,11 @@ void pm8001_open_reject_retry( & SAS_TASK_STATE_ABORTED))) { spin_unlock_irqrestore(&task->task_state_lock, flags1); - pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, task, ccb); } else { spin_unlock_irqrestore(&task->task_state_lock, flags1); - pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, task, ccb); mb();/* in order to force CPU ordering */ spin_unlock_irqrestore(&pm8001_ha->lock, flags); task->task_done(task); @@ -1126,7 +1102,6 @@ int pm8001_lu_reset(struct domain_device *dev, u8 *lun) /* optional SAM-3 */ int pm8001_query_task(struct sas_task *task) { - u32 tag = 0xdeadbeef; struct scsi_lun lun; struct pm8001_tmf_task tmf_task; int rc = TMF_RESP_FUNC_FAILED; @@ -1140,14 +1115,13 @@ int pm8001_query_task(struct sas_task *task) pm8001_find_ha_by_dev(dev); int_to_scsilun(cmnd->device->lun, &lun); - rc = pm8001_find_tag(task, &tag); - if (rc == 0) { + if (task->tag == -1) { rc = TMF_RESP_FUNC_FAILED; return rc; } pm8001_dbg(pm8001_ha, EH, "Query:[%16ph]\n", cmnd->cmnd); tmf_task.tmf = TMF_QUERY_TASK; - tmf_task.tag_of_task_to_be_managed = tag; + tmf_task.tag_of_task_to_be_managed = task->tag; rc = pm8001_exec_internal_tmf_task(dev, lun.scsi_lun, &tmf_task); switch (rc) { @@ -1196,8 +1170,7 @@ int pm8001_abort_task(struct sas_task *task) return TMF_RESP_FUNC_FAILED; } - ret = pm8001_find_tag(task, &tag); - if (ret == 0) { + if (task->tag < 0) { pm8001_info(pm8001_ha, "no tag for task:%p\n", task); return TMF_RESP_FUNC_FAILED; } diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h index 039ed91e9841..d7ec43fd61bb 100644 --- a/drivers/scsi/pm8001/pm8001_sas.h +++ b/drivers/scsi/pm8001/pm8001_sas.h @@ -472,7 +472,6 @@ struct pm8001_hba_info { struct list_head list; unsigned long flags; spinlock_t lock;/* host-wide lock */ - spinlock_t bitmap_lock; struct pci_dev *pdev;/* our device */ struct device *dev; struct pm8001_hba_memspace io_mem[6]; @@ -504,11 +503,11 @@ struct pm8001_hba_info { u8 sas_addr[SAS_ADDR_SIZE]; struct sas_ha_struct *sas;/* SCSI/SAS glue */ struct Scsi_Host *shost; + struct scsi_device *host_dev; u32 chip_id; const struct pm8001_chip_info *chip; struct completion *nvmd_completion; int tags_num; - unsigned long *tags; struct pm8001_phy phy[PM8001_MAX_PHYS]; struct pm8001_port port[PM8001_MAX_PHYS]; u32 id; @@ -631,11 +630,11 @@ struct fw_control_ex { 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_tag_alloc(struct pm8001_hba_info *pm8001_ha, + struct domain_device *dev); u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag); void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha, - struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx); + struct sas_task *task, struct pm8001_ccb_info *ccb); int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, void *funcdata); void pm8001_scan_start(struct Scsi_Host *shost); @@ -732,10 +731,9 @@ extern struct device_attribute *pm8001_host_attrs[]; static inline void pm8001_ccb_task_free_done(struct pm8001_hba_info *pm8001_ha, - struct sas_task *task, struct pm8001_ccb_info *ccb, - u32 ccb_idx) + struct sas_task *task, struct pm8001_ccb_info *ccb) { - pm8001_ccb_task_free(pm8001_ha, task, ccb, ccb_idx); + pm8001_ccb_task_free(pm8001_ha, task, ccb); smp_mb(); /*in order to force CPU ordering*/ spin_unlock(&pm8001_ha->lock); task->task_done(task); diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index 03bfb4d72895..a024ed79721f 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.c +++ b/drivers/scsi/pm8001/pm80xx_hwi.c @@ -1188,8 +1188,8 @@ pm80xx_set_thermal_config(struct pm8001_hba_info *pm8001_ha) u32 page_code; memset(&payload, 0, sizeof(struct set_ctrl_cfg_req)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) + tag = pm8001_tag_alloc(pm8001_ha, NULL); + if (tag == -1) return -1; circularQ = &pm8001_ha->inbnd_q_tbl[0]; @@ -1234,9 +1234,9 @@ pm80xx_set_sas_protocol_timer_config(struct pm8001_hba_info *pm8001_ha) memset(&payload, 0, sizeof(struct set_ctrl_cfg_req)); memset(&SASConfigPage, 0, sizeof(SASProtocolTimerConfig_t)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); + tag = pm8001_tag_alloc(pm8001_ha, NULL); - if (rc) + if (tag == -1) return -1; circularQ = &pm8001_ha->inbnd_q_tbl[0]; @@ -1395,8 +1395,8 @@ static int pm80xx_encrypt_update(struct pm8001_hba_info *pm8001_ha) u32 opc = OPC_INB_KEK_MANAGEMENT; memset(&payload, 0, sizeof(struct kek_mgmt_req)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) + tag = pm8001_tag_alloc(pm8001_ha, NULL); + if (tag == -1) return -1; circularQ = &pm8001_ha->inbnd_q_tbl[0]; @@ -1765,8 +1765,6 @@ pm80xx_chip_interrupt_disable(struct pm8001_hba_info *pm8001_ha, u8 vec) static void pm80xx_send_abort_all(struct pm8001_hba_info *pm8001_ha, struct pm8001_device *pm8001_ha_dev) { - int res; - u32 ccb_tag; struct pm8001_ccb_info *ccb; struct sas_task *task = NULL; struct task_abort_req task_abort; @@ -1791,15 +1789,15 @@ static void pm80xx_send_abort_all(struct pm8001_hba_info *pm8001_ha, task->task_done = pm8001_task_done; - res = pm8001_tag_alloc(pm8001_ha, &ccb_tag); - if (res) { + if (task->tag == -1) { sas_free_task(task); + pm8001_dbg(pm8001_ha, FAIL, "invalid task tag\n"); return; } - ccb = &pm8001_ha->ccb_info[ccb_tag]; + ccb = &pm8001_ha->ccb_info[task->tag]; ccb->device = pm8001_ha_dev; - ccb->ccb_tag = ccb_tag; + ccb->ccb_tag = task->tag; ccb->task = task; circularQ = &pm8001_ha->inbnd_q_tbl[0]; @@ -1807,15 +1805,13 @@ static void pm80xx_send_abort_all(struct pm8001_hba_info *pm8001_ha, memset(&task_abort, 0, sizeof(task_abort)); task_abort.abort_all = cpu_to_le32(1); task_abort.device_id = cpu_to_le32(pm8001_ha_dev->device_id); - task_abort.tag = cpu_to_le32(ccb_tag); + task_abort.tag = cpu_to_le32(task->tag); ret = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc, &task_abort, sizeof(task_abort), 0); pm8001_dbg(pm8001_ha, FAIL, "Executing abort task end\n"); - if (ret) { + if (ret) sas_free_task(task); - pm8001_tag_free(pm8001_ha, ccb_tag); - } } static void pm80xx_send_read_log(struct pm8001_hba_info *pm8001_ha, @@ -1823,7 +1819,6 @@ static void pm80xx_send_read_log(struct pm8001_hba_info *pm8001_ha, { struct sata_start_req sata_cmd; int res; - u32 ccb_tag; struct pm8001_ccb_info *ccb; struct sas_task *task = NULL; struct host_to_dev_fis fis; @@ -1841,19 +1836,17 @@ static void pm80xx_send_read_log(struct pm8001_hba_info *pm8001_ha, } task->task_done = pm8001_task_done; - res = pm8001_tag_alloc(pm8001_ha, &ccb_tag); - if (res) { + if (task->tag == -1) { sas_free_task(task); pm8001_dbg(pm8001_ha, FAIL, "cannot allocate tag !!!\n"); return; } - task->dev = dev; task->dev->lldd_dev = pm8001_ha_dev; - ccb = &pm8001_ha->ccb_info[ccb_tag]; + ccb = &pm8001_ha->ccb_info[task->tag]; ccb->device = pm8001_ha_dev; - ccb->ccb_tag = ccb_tag; + ccb->ccb_tag = task->tag; ccb->task = task; ccb->n_elem = 0; pm8001_ha_dev->id |= NCQ_READ_LOG_FLAG; @@ -1870,7 +1863,7 @@ static void pm80xx_send_read_log(struct pm8001_hba_info *pm8001_ha, fis.lbal = 0x10; fis.sector_count = 0x1; - sata_cmd.tag = cpu_to_le32(ccb_tag); + sata_cmd.tag = cpu_to_le32(task->tag); sata_cmd.device_id = cpu_to_le32(pm8001_ha_dev->device_id); sata_cmd.ncqtag_atap_dir_m_dad |= ((0x1 << 7) | (0x5 << 9)); memcpy(&sata_cmd.sata_fis, &fis, sizeof(struct host_to_dev_fis)); @@ -1878,10 +1871,8 @@ static void pm80xx_send_read_log(struct pm8001_hba_info *pm8001_ha, res = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc, &sata_cmd, sizeof(sata_cmd), 0); pm8001_dbg(pm8001_ha, FAIL, "Executing read log end\n"); - if (res) { + if (res) sas_free_task(task); - pm8001_tag_free(pm8001_ha, ccb_tag); - } } /** @@ -2176,10 +2167,10 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb) t, status, ts->resp, ts->stat); if (t->slow_task) complete(&t->slow_task->completion); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); } else { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); mb();/* in order to force CPU ordering */ t->task_done(t); } @@ -2356,12 +2347,13 @@ static void mpi_ssp_event(struct pm8001_hba_info *pm8001_ha , void *piomb) if (unlikely((t->task_state_flags & SAS_TASK_STATE_ABORTED))) { spin_unlock_irqrestore(&t->task_state_lock, flags); pm8001_dbg(pm8001_ha, FAIL, - "task 0x%p done with event 0x%x resp 0x%x stat 0x%x but aborted by upper layer!\n", + "task 0x%p done with event 0x%x resp 0x%x " + "stat 0x%x but aborted by upper layer!\n", t, event, ts->resp, ts->stat); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); } else { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); mb();/* in order to force CPU ordering */ t->task_done(t); } @@ -2606,7 +2598,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS); ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2622,7 +2614,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS); ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2646,7 +2638,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) IO_OPEN_CNX_ERROR_STP_RESOURCES_BUSY); ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2717,7 +2709,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) IO_DS_NON_OPERATIONAL); ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2737,7 +2729,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) IO_DS_IN_ERROR); ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2772,10 +2764,10 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) t, status, ts->resp, ts->stat); if (t->slow_task) complete(&t->slow_task->completion); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); } else { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); } } @@ -2880,7 +2872,7 @@ static void mpi_sata_event(struct pm8001_hba_info *pm8001_ha , void *piomb) IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS); ts->resp = SAS_TASK_COMPLETE; ts->stat = SAS_QUEUE_FULL; - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); return; } break; @@ -2987,12 +2979,13 @@ static void mpi_sata_event(struct pm8001_hba_info *pm8001_ha , void *piomb) if (unlikely((t->task_state_flags & SAS_TASK_STATE_ABORTED))) { spin_unlock_irqrestore(&t->task_state_lock, flags); pm8001_dbg(pm8001_ha, FAIL, - "task 0x%p done with io_status 0x%x resp 0x%x stat 0x%x but aborted by upper layer!\n", + "task 0x%p done with io_status 0x%x resp 0x%x " + "stat 0x%x but aborted by upper layer!\n", t, event, ts->resp, ts->stat); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); } else { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_ccb_task_free_done(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free_done(pm8001_ha, t, ccb); } } @@ -3195,12 +3188,13 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) if (unlikely((t->task_state_flags & SAS_TASK_STATE_ABORTED))) { spin_unlock_irqrestore(&t->task_state_lock, flags); pm8001_dbg(pm8001_ha, FAIL, - "task 0x%p done with io_status 0x%x resp 0x%xstat 0x%x but aborted by upper layer!\n", + "task 0x%p done with io_status 0x%x resp 0x%x " + "stat 0x%x but aborted by upper layer!\n", t, status, ts->resp, ts->stat); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); } else { spin_unlock_irqrestore(&t->task_state_lock, flags); - pm8001_ccb_task_free(pm8001_ha, t, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, t, ccb); mb();/* in order to force CPU ordering */ t->task_done(t); } @@ -4697,17 +4691,16 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha, spin_unlock_irqrestore(&task->task_state_lock, flags); pm8001_dbg(pm8001_ha, FAIL, - "task 0x%p resp 0x%x stat 0x%x but aborted by upper layer\n", + "task 0x%p resp 0x%x stat 0x%x " + "but aborted by upper layer\n", task, ts->resp, ts->stat); - pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, task, ccb); return 0; } else { spin_unlock_irqrestore(&task->task_state_lock, flags); - pm8001_ccb_task_free_done(pm8001_ha, task, - ccb, tag); - atomic_dec(&pm8001_ha_dev->running_req); + pm8001_ccb_task_free_done(pm8001_ha, task, ccb); return 0; } } @@ -4800,9 +4793,9 @@ static int pm80xx_chip_reg_dev_req(struct pm8001_hba_info *pm8001_ha, circularQ = &pm8001_ha->inbnd_q_tbl[0]; memset(&payload, 0, sizeof(payload)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) - return rc; + tag = pm8001_tag_alloc(pm8001_ha, dev); + if (tag == -1) + return -1; ccb = &pm8001_ha->ccb_info[tag]; ccb->device = pm8001_dev; ccb->ccb_tag = tag; @@ -4859,14 +4852,13 @@ static int pm80xx_chip_phy_ctl_req(struct pm8001_hba_info *pm8001_ha, u32 phyId, u32 phy_op) { u32 tag; - int rc; struct local_phy_ctl_req payload; struct inbound_queue_table *circularQ; u32 opc = OPC_INB_LOCAL_PHY_CONTROL; memset(&payload, 0, sizeof(payload)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) - return rc; + tag = pm8001_tag_alloc(pm8001_ha, NULL); + if (tag == -1) + return -1; circularQ = &pm8001_ha->inbnd_q_tbl[0]; payload.tag = cpu_to_le32(tag); payload.phyop_phyid = @@ -4917,9 +4909,11 @@ static void mpi_set_phy_profile_req(struct pm8001_hba_info *pm8001_ha, u32 opc = OPC_INB_SET_PHY_PROFILE; memset(&payload, 0, sizeof(payload)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) + tag = pm8001_tag_alloc(pm8001_ha, NULL); + if (tag == -1) { pm8001_dbg(pm8001_ha, FAIL, "Invalid tag\n"); + return; + } circularQ = &pm8001_ha->inbnd_q_tbl[0]; payload.tag = cpu_to_le32(tag); payload.ppc_phyid = (((operation & 0xF) << 8) | (phyid & 0xFF)); @@ -4959,10 +4953,11 @@ void pm8001_set_phy_profile_single(struct pm8001_hba_info *pm8001_ha, memset(&payload, 0, sizeof(payload)); - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) + tag = pm8001_tag_alloc(pm8001_ha, NULL); + if (tag == -1) { pm8001_dbg(pm8001_ha, INIT, "Invalid tag\n"); - + return; + } circularQ = &pm8001_ha->inbnd_q_tbl[0]; opc = OPC_INB_SET_PHY_PROFILE;