From patchwork Fri Apr 8 23:29:41 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Bottomley X-Patchwork-Id: 8786841 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 B64F89F71A for ; Fri, 8 Apr 2016 23:30:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0C4A920222 for ; Fri, 8 Apr 2016 23:30:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 29E8D202EB for ; Fri, 8 Apr 2016 23:29:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759293AbcDHX3q (ORCPT ); Fri, 8 Apr 2016 19:29:46 -0400 Received: from bedivere.hansenpartnership.com ([66.63.167.143]:36766 "EHLO bedivere.hansenpartnership.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759280AbcDHX3o (ORCPT ); Fri, 8 Apr 2016 19:29:44 -0400 Received: from localhost (localhost [127.0.0.1]) by bedivere.hansenpartnership.com (Postfix) with ESMTP id 5883E8EE215; Fri, 8 Apr 2016 16:29:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=hansenpartnership.com; s=20151216; t=1460158183; bh=vlJXmOH5yEREDPRa4NZE4zwu+HhkcZNTZxdUFCKfqi8=; h=Subject:From:To:Cc:Date:From; b=f7R5vHByWv+R/u500q2BgQ6xfOEHxgb5bM9jODoTbBj1DcLbCPNG39/aiHpWym4cX 3CJs/tONk2cTb9s9L05ICVhuT7O0RRR2V1vJOuNnCMZKy1qcpkCZRilu+E2jlHGumq AK8Owla/opMQOleSFikFysj06ZGoezB7jMqvnlj4= Received: from bedivere.hansenpartnership.com ([127.0.0.1]) by localhost (bedivere.hansenpartnership.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gW2vFYvfudFz; Fri, 8 Apr 2016 16:29:43 -0700 (PDT) Received: from [153.66.254.194] (unknown [50.46.144.141]) by bedivere.hansenpartnership.com (Postfix) with ESMTPSA id 702888EE07D; Fri, 8 Apr 2016 16:29:42 -0700 (PDT) Message-ID: <1460158181.2340.79.camel@HansenPartnership.com> Subject: [GIT PULL] SCSI fixes for 4.6-rc2 From: James Bottomley To: Andrew Morton , Linus Torvalds Cc: linux-scsi , linux-kernel Date: Fri, 08 Apr 2016 16:29:41 -0700 X-Mailer: Evolution 3.16.5 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=-7.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID,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 This is a set of 8 fixes. Two are trivial gcc-6 updates (brace additions and unused variable removal). There's a couple of cxlflash regressions, a correction for sd being overly chatty on revalidation (causing excess log increases). A VPD issue which could crash USB devices because they seem very intolerant to VPD inquiries, an ALUA deadlock fix and a mpt3sas buffer overrun fix. The patch is available here: git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes The short changelog is: Arnd Bergmann (1): aacraid: add missing curly braces Bart Van Assche (2): scsi_dh_alua: Fix a recently introduced deadlock scsi: Declare local symbols static Calvin Owens (1): mpt3sas: Don't overreach ioc->reply_post[] during initialization Hannes Reinecke (1): scsi: Do not attach VPD to devices that don't support it Manoj N. Kumar (2): cxlflash: Move to exponential back-off when cmd_room is not available cxlflash: Fix regression issue with re-ordering patch Martin K. Petersen (1): sd: Fix excessive capacity printing on devices with blocks bigger than 512 bytes And the diffstat drivers/scsi/aacraid/linit.c | 3 +- drivers/scsi/cxlflash/main.c | 138 ++++++++++++++++++++--------- drivers/scsi/cxlflash/main.h | 5 +- drivers/scsi/device_handler/scsi_dh_alua.c | 4 +- drivers/scsi/mpt3sas/mpt3sas_base.c | 33 ++++--- drivers/scsi/scsi.c | 3 +- drivers/scsi/scsi_sysfs.c | 8 +- drivers/scsi/sd.c | 47 ++-------- drivers/scsi/sd.h | 7 +- include/scsi/scsi_device.h | 25 ++++++ 10 files changed, 164 insertions(+), 109 deletions(-) With full diff below. James --- -- 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/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index 21a67ed..ff6caab 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -452,10 +452,11 @@ static int aac_slave_configure(struct scsi_device *sdev) else if (depth < 2) depth = 2; scsi_change_queue_depth(sdev, depth); - } else + } else { scsi_change_queue_depth(sdev, 1); sdev->tagged_supported = 1; + } return 0; } diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c index 35968bd..8fb9643 100644 --- a/drivers/scsi/cxlflash/main.c +++ b/drivers/scsi/cxlflash/main.c @@ -289,7 +289,7 @@ static void context_reset(struct afu_cmd *cmd) atomic64_set(&afu->room, room); if (room) goto write_rrin; - udelay(nretry); + udelay(1 << nretry); } while (nretry++ < MC_ROOM_RETRY_CNT); pr_err("%s: no cmd_room to send reset\n", __func__); @@ -303,7 +303,7 @@ write_rrin: if (rrin != 0x1) break; /* Double delay each time */ - udelay(2 << nretry); + udelay(1 << nretry); } while (nretry++ < MC_ROOM_RETRY_CNT); } @@ -338,7 +338,7 @@ retry: atomic64_set(&afu->room, room); if (room) goto write_ioarrin; - udelay(nretry); + udelay(1 << nretry); } while (nretry++ < MC_ROOM_RETRY_CNT); dev_err(dev, "%s: no cmd_room to send 0x%X\n", @@ -352,7 +352,7 @@ retry: * afu->room. */ if (nretry++ < MC_ROOM_RETRY_CNT) { - udelay(nretry); + udelay(1 << nretry); goto retry; } @@ -683,28 +683,23 @@ static void stop_afu(struct cxlflash_cfg *cfg) } /** - * term_mc() - terminates the master context + * term_intr() - disables all AFU interrupts * @cfg: Internal structure associated with the host. * @level: Depth of allocation, where to begin waterfall tear down. * * Safe to call with AFU/MC in partially allocated/initialized state. */ -static void term_mc(struct cxlflash_cfg *cfg, enum undo_level level) +static void term_intr(struct cxlflash_cfg *cfg, enum undo_level level) { - int rc = 0; struct afu *afu = cfg->afu; struct device *dev = &cfg->dev->dev; if (!afu || !cfg->mcctx) { - dev_err(dev, "%s: returning from term_mc with NULL afu or MC\n", - __func__); + dev_err(dev, "%s: returning with NULL afu or MC\n", __func__); return; } switch (level) { - case UNDO_START: - rc = cxl_stop_context(cfg->mcctx); - BUG_ON(rc); case UNMAP_THREE: cxl_unmap_afu_irq(cfg->mcctx, 3, afu); case UNMAP_TWO: @@ -713,9 +708,34 @@ static void term_mc(struct cxlflash_cfg *cfg, enum undo_level level) cxl_unmap_afu_irq(cfg->mcctx, 1, afu); case FREE_IRQ: cxl_free_afu_irqs(cfg->mcctx); - case RELEASE_CONTEXT: - cfg->mcctx = NULL; + /* fall through */ + case UNDO_NOOP: + /* No action required */ + break; + } +} + +/** + * term_mc() - terminates the master context + * @cfg: Internal structure associated with the host. + * @level: Depth of allocation, where to begin waterfall tear down. + * + * Safe to call with AFU/MC in partially allocated/initialized state. + */ +static void term_mc(struct cxlflash_cfg *cfg) +{ + int rc = 0; + struct afu *afu = cfg->afu; + struct device *dev = &cfg->dev->dev; + + if (!afu || !cfg->mcctx) { + dev_err(dev, "%s: returning with NULL afu or MC\n", __func__); + return; } + + rc = cxl_stop_context(cfg->mcctx); + WARN_ON(rc); + cfg->mcctx = NULL; } /** @@ -726,10 +746,20 @@ static void term_mc(struct cxlflash_cfg *cfg, enum undo_level level) */ static void term_afu(struct cxlflash_cfg *cfg) { + /* + * Tear down is carefully orchestrated to ensure + * no interrupts can come in when the problem state + * area is unmapped. + * + * 1) Disable all AFU interrupts + * 2) Unmap the problem state area + * 3) Stop the master context + */ + term_intr(cfg, UNMAP_THREE); if (cfg->afu) stop_afu(cfg); - term_mc(cfg, UNDO_START); + term_mc(cfg); pr_debug("%s: returning\n", __func__); } @@ -1597,41 +1627,24 @@ static int start_afu(struct cxlflash_cfg *cfg) } /** - * init_mc() - create and register as the master context + * init_intr() - setup interrupt handlers for the master context * @cfg: Internal structure associated with the host. * * Return: 0 on success, -errno on failure */ -static int init_mc(struct cxlflash_cfg *cfg) +static enum undo_level init_intr(struct cxlflash_cfg *cfg, + struct cxl_context *ctx) { - struct cxl_context *ctx; - struct device *dev = &cfg->dev->dev; struct afu *afu = cfg->afu; + struct device *dev = &cfg->dev->dev; int rc = 0; - enum undo_level level; - - ctx = cxl_get_context(cfg->dev); - if (unlikely(!ctx)) - return -ENOMEM; - cfg->mcctx = ctx; - - /* Set it up as a master with the CXL */ - cxl_set_master(ctx); - - /* During initialization reset the AFU to start from a clean slate */ - rc = cxl_afu_reset(cfg->mcctx); - if (unlikely(rc)) { - dev_err(dev, "%s: initial AFU reset failed rc=%d\n", - __func__, rc); - level = RELEASE_CONTEXT; - goto out; - } + enum undo_level level = UNDO_NOOP; rc = cxl_allocate_afu_irqs(ctx, 3); if (unlikely(rc)) { dev_err(dev, "%s: call to allocate_afu_irqs failed rc=%d!\n", __func__, rc); - level = RELEASE_CONTEXT; + level = UNDO_NOOP; goto out; } @@ -1661,8 +1674,47 @@ static int init_mc(struct cxlflash_cfg *cfg) level = UNMAP_TWO; goto out; } +out: + return level; +} - rc = 0; +/** + * init_mc() - create and register as the master context + * @cfg: Internal structure associated with the host. + * + * Return: 0 on success, -errno on failure + */ +static int init_mc(struct cxlflash_cfg *cfg) +{ + struct cxl_context *ctx; + struct device *dev = &cfg->dev->dev; + int rc = 0; + enum undo_level level; + + ctx = cxl_get_context(cfg->dev); + if (unlikely(!ctx)) { + rc = -ENOMEM; + goto ret; + } + cfg->mcctx = ctx; + + /* Set it up as a master with the CXL */ + cxl_set_master(ctx); + + /* During initialization reset the AFU to start from a clean slate */ + rc = cxl_afu_reset(cfg->mcctx); + if (unlikely(rc)) { + dev_err(dev, "%s: initial AFU reset failed rc=%d\n", + __func__, rc); + goto ret; + } + + level = init_intr(cfg, ctx); + if (unlikely(level)) { + dev_err(dev, "%s: setting up interrupts failed rc=%d\n", + __func__, rc); + goto out; + } /* This performs the equivalent of the CXL_IOCTL_START_WORK. * The CXL_IOCTL_GET_PROCESS_ELEMENT is implicit in the process @@ -1678,7 +1730,7 @@ ret: pr_debug("%s: returning rc=%d\n", __func__, rc); return rc; out: - term_mc(cfg, level); + term_intr(cfg, level); goto ret; } @@ -1751,7 +1803,8 @@ out: err2: kref_put(&afu->mapcount, afu_unmap); err1: - term_mc(cfg, UNDO_START); + term_intr(cfg, UNMAP_THREE); + term_mc(cfg); goto out; } @@ -2488,8 +2541,7 @@ static pci_ers_result_t cxlflash_pci_error_detected(struct pci_dev *pdev, if (unlikely(rc)) dev_err(dev, "%s: Failed to mark user contexts!(%d)\n", __func__, rc); - stop_afu(cfg); - term_mc(cfg, UNDO_START); + term_afu(cfg); return PCI_ERS_RESULT_NEED_RESET; case pci_channel_io_perm_failure: cfg->state = STATE_FAILTERM; diff --git a/drivers/scsi/cxlflash/main.h b/drivers/scsi/cxlflash/main.h index 0faed42..eb9d8f7 100644 --- a/drivers/scsi/cxlflash/main.h +++ b/drivers/scsi/cxlflash/main.h @@ -79,12 +79,11 @@ #define WWPN_BUF_LEN (WWPN_LEN + 1) enum undo_level { - RELEASE_CONTEXT = 0, + UNDO_NOOP = 0, FREE_IRQ, UNMAP_ONE, UNMAP_TWO, - UNMAP_THREE, - UNDO_START + UNMAP_THREE }; struct dev_dependent_vals { diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index a404a41..8eaed05 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -1112,9 +1112,9 @@ static void alua_bus_detach(struct scsi_device *sdev) h->sdev = NULL; spin_unlock(&h->pg_lock); if (pg) { - spin_lock(&pg->lock); + spin_lock_irq(&pg->lock); list_del_rcu(&h->node); - spin_unlock(&pg->lock); + spin_unlock_irq(&pg->lock); kref_put(&pg->kref, release_port_group); } sdev->handler_data = NULL; diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c index e4db5fb..8c44b9c 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -5030,7 +5030,7 @@ _base_make_ioc_ready(struct MPT3SAS_ADAPTER *ioc, int sleep_flag, static int _base_make_ioc_operational(struct MPT3SAS_ADAPTER *ioc, int sleep_flag) { - int r, i; + int r, i, index; unsigned long flags; u32 reply_address; u16 smid; @@ -5039,8 +5039,7 @@ _base_make_ioc_operational(struct MPT3SAS_ADAPTER *ioc, int sleep_flag) struct _event_ack_list *delayed_event_ack, *delayed_event_ack_next; u8 hide_flag; struct adapter_reply_queue *reply_q; - long reply_post_free; - u32 reply_post_free_sz, index = 0; + Mpi2ReplyDescriptorsUnion_t *reply_post_free_contig; dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name, __func__)); @@ -5124,27 +5123,27 @@ _base_make_ioc_operational(struct MPT3SAS_ADAPTER *ioc, int sleep_flag) _base_assign_reply_queues(ioc); /* initialize Reply Post Free Queue */ - reply_post_free_sz = ioc->reply_post_queue_depth * - sizeof(Mpi2DefaultReplyDescriptor_t); - reply_post_free = (long)ioc->reply_post[index].reply_post_free; + index = 0; + reply_post_free_contig = ioc->reply_post[0].reply_post_free; list_for_each_entry(reply_q, &ioc->reply_queue_list, list) { + /* + * If RDPQ is enabled, switch to the next allocation. + * Otherwise advance within the contiguous region. + */ + if (ioc->rdpq_array_enable) { + reply_q->reply_post_free = + ioc->reply_post[index++].reply_post_free; + } else { + reply_q->reply_post_free = reply_post_free_contig; + reply_post_free_contig += ioc->reply_post_queue_depth; + } + reply_q->reply_post_host_index = 0; - reply_q->reply_post_free = (Mpi2ReplyDescriptorsUnion_t *) - reply_post_free; for (i = 0; i < ioc->reply_post_queue_depth; i++) reply_q->reply_post_free[i].Words = cpu_to_le64(ULLONG_MAX); if (!_base_is_controller_msix_enabled(ioc)) goto skip_init_reply_post_free_queue; - /* - * If RDPQ is enabled, switch to the next allocation. - * Otherwise advance within the contiguous region. - */ - if (ioc->rdpq_array_enable) - reply_post_free = (long) - ioc->reply_post[++index].reply_post_free; - else - reply_post_free += reply_post_free_sz; } skip_init_reply_post_free_queue: diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index b1bf42b..1deb6ad 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -784,8 +784,9 @@ void scsi_attach_vpd(struct scsi_device *sdev) int pg83_supported = 0; unsigned char __rcu *vpd_buf, *orig_vpd_buf = NULL; - if (sdev->skip_vpd_pages) + if (!scsi_device_supports_vpd(sdev)) return; + retry_pg0: vpd_buf = kmalloc(vpd_len, GFP_KERNEL); if (!vpd_buf) diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 92ffd24..2b642b1 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -81,6 +81,7 @@ const char *scsi_host_state_name(enum scsi_host_state state) return name; } +#ifdef CONFIG_SCSI_DH static const struct { unsigned char value; char *name; @@ -94,7 +95,7 @@ static const struct { { SCSI_ACCESS_STATE_TRANSITIONING, "transitioning" }, }; -const char *scsi_access_state_name(unsigned char state) +static const char *scsi_access_state_name(unsigned char state) { int i; char *name = NULL; @@ -107,6 +108,7 @@ const char *scsi_access_state_name(unsigned char state) } return name; } +#endif static int check_set(unsigned long long *val, char *src) { @@ -226,7 +228,7 @@ show_shost_state(struct device *dev, struct device_attribute *attr, char *buf) } /* DEVICE_ATTR(state) clashes with dev_attr_state for sdev */ -struct device_attribute dev_attr_hstate = +static struct device_attribute dev_attr_hstate = __ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state); static ssize_t @@ -401,7 +403,7 @@ static struct attribute *scsi_sysfs_shost_attrs[] = { NULL }; -struct attribute_group scsi_shost_attr_group = { +static struct attribute_group scsi_shost_attr_group = { .attrs = scsi_sysfs_shost_attrs, }; diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 5a5457a..974ca5b 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1275,18 +1275,19 @@ static int sd_getgeo(struct block_device *bdev, struct hd_geometry *geo) struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk); struct scsi_device *sdp = sdkp->device; struct Scsi_Host *host = sdp->host; + sector_t capacity = logical_to_sectors(sdp, sdkp->capacity); int diskinfo[4]; /* default to most commonly used values */ - diskinfo[0] = 0x40; /* 1 << 6 */ - diskinfo[1] = 0x20; /* 1 << 5 */ - diskinfo[2] = sdkp->capacity >> 11; - + diskinfo[0] = 0x40; /* 1 << 6 */ + diskinfo[1] = 0x20; /* 1 << 5 */ + diskinfo[2] = capacity >> 11; + /* override with calculated, extended default, or driver values */ if (host->hostt->bios_param) - host->hostt->bios_param(sdp, bdev, sdkp->capacity, diskinfo); + host->hostt->bios_param(sdp, bdev, capacity, diskinfo); else - scsicam_bios_param(bdev, sdkp->capacity, diskinfo); + scsicam_bios_param(bdev, capacity, diskinfo); geo->heads = diskinfo[0]; geo->sectors = diskinfo[1]; @@ -2337,14 +2338,6 @@ got_data: if (sdkp->capacity > 0xffffffff) sdp->use_16_for_rw = 1; - /* Rescale capacity to 512-byte units */ - if (sector_size == 4096) - sdkp->capacity <<= 3; - else if (sector_size == 2048) - sdkp->capacity <<= 2; - else if (sector_size == 1024) - sdkp->capacity <<= 1; - blk_queue_physical_block_size(sdp->request_queue, sdkp->physical_block_size); sdkp->device->sector_size = sector_size; @@ -2795,28 +2788,6 @@ static void sd_read_write_same(struct scsi_disk *sdkp, unsigned char *buffer) sdkp->ws10 = 1; } -static int sd_try_extended_inquiry(struct scsi_device *sdp) -{ - /* Attempt VPD inquiry if the device blacklist explicitly calls - * for it. - */ - if (sdp->try_vpd_pages) - return 1; - /* - * Although VPD inquiries can go to SCSI-2 type devices, - * some USB ones crash on receiving them, and the pages - * we currently ask for are for SPC-3 and beyond - */ - if (sdp->scsi_level > SCSI_SPC_2 && !sdp->skip_vpd_pages) - return 1; - return 0; -} - -static inline u32 logical_to_sectors(struct scsi_device *sdev, u32 blocks) -{ - return blocks << (ilog2(sdev->sector_size) - 9); -} - /** * sd_revalidate_disk - called the first time a new disk is seen, * performs disk spin up, read_capacity, etc. @@ -2856,7 +2827,7 @@ static int sd_revalidate_disk(struct gendisk *disk) if (sdkp->media_present) { sd_read_capacity(sdkp, buffer); - if (sd_try_extended_inquiry(sdp)) { + if (scsi_device_supports_vpd(sdp)) { sd_read_block_provisioning(sdkp); sd_read_block_limits(sdkp); sd_read_block_characteristics(sdkp); @@ -2900,7 +2871,7 @@ static int sd_revalidate_disk(struct gendisk *disk) /* Combine with controller limits */ q->limits.max_sectors = min(rw_max, queue_max_hw_sectors(q)); - set_capacity(disk, sdkp->capacity); + set_capacity(disk, logical_to_sectors(sdp, sdkp->capacity)); sd_config_write_same(sdkp); kfree(buffer); diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index 5f2a84a..654630b 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -65,7 +65,7 @@ struct scsi_disk { struct device dev; struct gendisk *disk; atomic_t openers; - sector_t capacity; /* size in 512-byte sectors */ + sector_t capacity; /* size in logical blocks */ u32 max_xfer_blocks; u32 opt_xfer_blocks; u32 max_ws_blocks; @@ -146,6 +146,11 @@ static inline int scsi_medium_access_command(struct scsi_cmnd *scmd) return 0; } +static inline sector_t logical_to_sectors(struct scsi_device *sdev, sector_t blocks) +{ + return blocks << (ilog2(sdev->sector_size) - 9); +} + /* * A DIF-capable target device can be formatted with different * protection schemes. Currently 0 through 3 are defined: diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index c067019..74d79bd 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -516,6 +516,31 @@ static inline int scsi_device_tpgs(struct scsi_device *sdev) return sdev->inquiry ? (sdev->inquiry[5] >> 4) & 0x3 : 0; } +/** + * scsi_device_supports_vpd - test if a device supports VPD pages + * @sdev: the &struct scsi_device to test + * + * If the 'try_vpd_pages' flag is set it takes precedence. + * Otherwise we will assume VPD pages are supported if the + * SCSI level is at least SPC-3 and 'skip_vpd_pages' is not set. + */ +static inline int scsi_device_supports_vpd(struct scsi_device *sdev) +{ + /* Attempt VPD inquiry if the device blacklist explicitly calls + * for it. + */ + if (sdev->try_vpd_pages) + return 1; + /* + * Although VPD inquiries can go to SCSI-2 type devices, + * some USB ones crash on receiving them, and the pages + * we currently ask for are for SPC-3 and beyond + */ + if (sdev->scsi_level > SCSI_SPC_2 && !sdev->skip_vpd_pages) + return 1; + return 0; +} + #define MODULE_ALIAS_SCSI_DEVICE(type) \ MODULE_ALIAS("scsi:t-" __stringify(type) "*") #define SCSI_DEVICE_MODALIAS_FMT "scsi:t-0x%02x"