From patchwork Tue Mar 17 20:03:13 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Don Brace X-Patchwork-Id: 6034111 Return-Path: X-Original-To: patchwork-linux-scsi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 3A3829F2A9 for ; Tue, 17 Mar 2015 20:04:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 429122046F for ; Tue, 17 Mar 2015 20:04:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1032920459 for ; Tue, 17 Mar 2015 20:04:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932164AbbCQUEx (ORCPT ); Tue, 17 Mar 2015 16:04:53 -0400 Received: from g4t3427.houston.hp.com ([15.201.208.55]:54180 "EHLO g4t3427.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932141AbbCQUEw (ORCPT ); Tue, 17 Mar 2015 16:04:52 -0400 Received: from g4t3433.houston.hp.com (g4t3433.houston.hp.com [16.210.25.219]) by g4t3427.houston.hp.com (Postfix) with ESMTP id 71431A0; Tue, 17 Mar 2015 20:04:52 +0000 (UTC) Received: from [127.0.1.1] (brunhilda.americas.hpqcorp.net [16.100.201.25]) by g4t3433.houston.hp.com (Postfix) with ESMTP id 4F29070; Tue, 17 Mar 2015 20:04:52 +0000 (UTC) Subject: [PATCH v3 09/42] hpsa: factor out hpsa_init_cmd function From: Don Brace To: scott.teel@pmcs.com, Kevin.Barnett@pmcs.com, james.bottomley@parallels.com, hch@infradead.org, Justin.Lindley@pmcs.com, brace@pmcs.com Cc: linux-scsi@vger.kernel.org Date: Tue, 17 Mar 2015 15:03:13 -0500 Message-ID: <20150317200313.19856.45915.stgit@brunhilda> In-Reply-To: <20150317200139.19856.87982.stgit@brunhilda> References: <20150317200139.19856.87982.stgit@brunhilda> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Stephen Cameron Factor out hpsa_cmd_init from cmd_alloc(). We also need this for resubmitting commands down the default RAID path when they have returned from the ioaccel paths with errors. In particular, reinitialize the cmd_type and busaddr fields as these will not be correct for submitting down the RAID stack path after ioaccel command completion. This saves time when submitting commands. Reviewed-by: Scott Teel Reviewed-by: Kevin Barnett Signed-off-by: Don Brace --- drivers/scsi/hpsa.c | 77 ++++++++++++++++++++++++++++++++--------------- drivers/scsi/hpsa_cmd.h | 2 + 2 files changed, 53 insertions(+), 26 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 9a13525..d57fa4b 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -4317,7 +4317,6 @@ static int hpsa_ciss_submit(struct ctlr_info *h, /* Fill in the request block... */ c->Request.Timeout = 0; - memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); c->Request.CDBLen = cmd->cmd_len; memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); @@ -4368,6 +4367,48 @@ static int hpsa_ciss_submit(struct ctlr_info *h, return 0; } +static void hpsa_cmd_init(struct ctlr_info *h, int index, + struct CommandList *c) +{ + 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)); + 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; + memset(c->err_info, 0, sizeof(*c->err_info)); + err_dma_handle = h->errinfo_pool_dhandle + + index * sizeof(*c->err_info); + c->cmdindex = index; + c->busaddr = (u32) cmd_dma_handle; + c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle); + c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info)); + c->h = h; +} + +static void hpsa_preinitialize_commands(struct ctlr_info *h) +{ + int i; + + for (i = 0; i < h->nr_cmds; i++) { + struct CommandList *c = h->cmd_pool + i; + + hpsa_cmd_init(h, i, c); + atomic_set(&c->refcount, 0); + } +} + +static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index, + struct CommandList *c) +{ + dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c); + + memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); + memset(c->err_info, 0, sizeof(*c->err_info)); + c->busaddr = (u32) cmd_dma_handle; +} + static void hpsa_command_resubmit_worker(struct work_struct *work) { struct scsi_cmnd *cmd; @@ -4382,6 +4423,7 @@ static void hpsa_command_resubmit_worker(struct work_struct *work) cmd->scsi_done(cmd); return; } + hpsa_cmd_partial_init(c->h, c->cmdindex, c); if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) { /* * If we get here, it means dma mapping failed. Try @@ -4438,10 +4480,11 @@ static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd) h->acciopath_status)) { cmd->host_scribble = (unsigned char *) c; - c->cmd_type = CMD_SCSI; - c->scsi_cmd = cmd; if (dev->offload_enabled) { + hpsa_cmd_init(h, c->cmdindex, c); + c->cmd_type = CMD_SCSI; + c->scsi_cmd = cmd; rc = hpsa_scsi_ioaccel_raid_map(h, c); if (rc == 0) return 0; /* Sent on ioaccel path */ @@ -4450,6 +4493,9 @@ static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd) return SCSI_MLQUEUE_HOST_BUSY; } } else if (dev->ioaccel_handle) { + hpsa_cmd_init(h, c->cmdindex, c); + c->cmd_type = CMD_SCSI; + c->scsi_cmd = cmd; rc = hpsa_scsi_ioaccel_direct_map(h, c); if (rc == 0) return 0; /* Sent on direct map path */ @@ -5061,10 +5107,7 @@ static int hpsa_eh_abort_handler(struct scsi_cmnd *sc) static struct CommandList *cmd_alloc(struct ctlr_info *h) { struct CommandList *c; - int i; - union u64bit temp64; - dma_addr_t cmd_dma_handle, err_dma_handle; - int refcount; + int refcount, i; unsigned long offset; /* @@ -5098,24 +5141,7 @@ static struct CommandList *cmd_alloc(struct ctlr_info *h) break; /* it's ours now. */ } h->last_allocation = i; /* benignly racy */ - - /* Zero out all of commandlist except the last field, refcount */ - memset(c, 0, offsetof(struct CommandList, refcount)); - c->Header.tag = cpu_to_le64((u64) (i << DIRECT_LOOKUP_SHIFT)); - cmd_dma_handle = h->cmd_pool_dhandle + i * sizeof(*c); - c->err_info = h->errinfo_pool + i; - memset(c->err_info, 0, sizeof(*c->err_info)); - err_dma_handle = h->errinfo_pool_dhandle - + i * sizeof(*c->err_info); - - c->cmdindex = i; - - c->busaddr = (u32) cmd_dma_handle; - temp64.val = (u64) err_dma_handle; - c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle); - c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info)); - - c->h = h; + hpsa_cmd_partial_init(h, i, c); return c; } @@ -6834,6 +6860,7 @@ static int hpsa_alloc_cmd_pool(struct ctlr_info *h) dev_err(&h->pdev->dev, "out of memory in %s", __func__); goto clean_up; } + hpsa_preinitialize_commands(h); return 0; clean_up: hpsa_free_cmd_pool(h); diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h index f6ca5fa..0efb6f2b 100644 --- a/drivers/scsi/hpsa_cmd.h +++ b/drivers/scsi/hpsa_cmd.h @@ -438,7 +438,7 @@ struct CommandList { * not used. */ struct hpsa_scsi_dev_t *phys_disk; - atomic_t refcount; /* Must be last to avoid memset in cmd_alloc */ + 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 */