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drivers/scsi/sd.c
75.8 KB
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/* * sd.c Copyright (C) 1992 Drew Eckhardt * Copyright (C) 1993, 1994, 1995, 1999 Eric Youngdale * * Linux scsi disk driver * Initial versions: Drew Eckhardt * Subsequent revisions: Eric Youngdale * Modification history: * - Drew Eckhardt <drew@colorado.edu> original * - Eric Youngdale <eric@andante.org> add scatter-gather, multiple * outstanding request, and other enhancements. * Support loadable low-level scsi drivers. * - Jirka Hanika <geo@ff.cuni.cz> support more scsi disks using * eight major numbers. * - Richard Gooch <rgooch@atnf.csiro.au> support devfs. * - Torben Mathiasen <tmm@image.dk> Resource allocation fixes in * sd_init and cleanups. * - Alex Davis <letmein@erols.com> Fix problem where partition info * not being read in sd_open. Fix problem where removable media * could be ejected after sd_open. * - Douglas Gilbert <dgilbert@interlog.com> cleanup for lk 2.5.x * - Badari Pulavarty <pbadari@us.ibm.com>, Matthew Wilcox * <willy@debian.org>, Kurt Garloff <garloff@suse.de>: * Support 32k/1M disks. * * Logging policy (needs CONFIG_SCSI_LOGGING defined): * - setting up transfer: SCSI_LOG_HLQUEUE levels 1 and 2 * - end of transfer (bh + scsi_lib): SCSI_LOG_HLCOMPLETE level 1 * - entering sd_ioctl: SCSI_LOG_IOCTL level 1 * - entering other commands: SCSI_LOG_HLQUEUE level 3 * Note: when the logging level is set by the user, it must be greater * than the level indicated above to trigger output. */ |
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#include <linux/module.h> #include <linux/fs.h> #include <linux/kernel.h> |
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#include <linux/mm.h> #include <linux/bio.h> #include <linux/genhd.h> #include <linux/hdreg.h> #include <linux/errno.h> #include <linux/idr.h> #include <linux/interrupt.h> #include <linux/init.h> #include <linux/blkdev.h> #include <linux/blkpg.h> |
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#include <linux/delay.h> |
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#include <linux/mutex.h> |
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#include <linux/string_helpers.h> |
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#include <linux/async.h> |
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#include <linux/slab.h> |
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#include <linux/pm_runtime.h> |
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#include <asm/uaccess.h> |
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#include <asm/unaligned.h> |
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#include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_dbg.h> #include <scsi/scsi_device.h> #include <scsi/scsi_driver.h> #include <scsi/scsi_eh.h> #include <scsi/scsi_host.h> #include <scsi/scsi_ioctl.h> |
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#include <scsi/scsicam.h> |
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#include "sd.h" |
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#include "scsi_logging.h" |
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MODULE_AUTHOR("Eric Youngdale"); MODULE_DESCRIPTION("SCSI disk (sd) driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK0_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK1_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK2_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK3_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK4_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK5_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK6_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK7_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK8_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK9_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK10_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK11_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK12_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK13_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK14_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK15_MAJOR); |
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MODULE_ALIAS_SCSI_DEVICE(TYPE_DISK); MODULE_ALIAS_SCSI_DEVICE(TYPE_MOD); MODULE_ALIAS_SCSI_DEVICE(TYPE_RBC); |
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#if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT) |
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#define SD_MINORS 16 |
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#else |
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#define SD_MINORS 0 |
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#endif |
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static void sd_config_discard(struct scsi_disk *, unsigned int); |
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static int sd_revalidate_disk(struct gendisk *); |
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static void sd_unlock_native_capacity(struct gendisk *disk); |
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static int sd_probe(struct device *); static int sd_remove(struct device *); static void sd_shutdown(struct device *); static int sd_suspend(struct device *, pm_message_t state); static int sd_resume(struct device *); static void sd_rescan(struct device *); static int sd_done(struct scsi_cmnd *); static void sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer); |
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static void scsi_disk_release(struct device *cdev); |
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static void sd_print_sense_hdr(struct scsi_disk *, struct scsi_sense_hdr *); static void sd_print_result(struct scsi_disk *, int); |
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static DEFINE_SPINLOCK(sd_index_lock); |
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static DEFINE_IDA(sd_index_ida); |
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/* This semaphore is used to mediate the 0->1 reference get in the * face of object destruction (i.e. we can't allow a get on an * object after last put) */ |
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static DEFINE_MUTEX(sd_ref_mutex); |
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static struct kmem_cache *sd_cdb_cache; static mempool_t *sd_cdb_pool; |
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static const char *sd_cache_types[] = { "write through", "none", "write back", "write back, no read (daft)" }; |
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static ssize_t sd_store_cache_type(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
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{ int i, ct = -1, rcd, wce, sp; |
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struct scsi_disk *sdkp = to_scsi_disk(dev); |
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struct scsi_device *sdp = sdkp->device; char buffer[64]; char *buffer_data; struct scsi_mode_data data; struct scsi_sense_hdr sshdr; int len; if (sdp->type != TYPE_DISK) /* no cache control on RBC devices; theoretically they * can do it, but there's probably so many exceptions * it's not worth the risk */ return -EINVAL; |
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for (i = 0; i < ARRAY_SIZE(sd_cache_types); i++) { |
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len = strlen(sd_cache_types[i]); |
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if (strncmp(sd_cache_types[i], buf, len) == 0 && buf[len] == ' ') { ct = i; break; } } if (ct < 0) return -EINVAL; rcd = ct & 0x01 ? 1 : 0; wce = ct & 0x02 ? 1 : 0; if (scsi_mode_sense(sdp, 0x08, 8, buffer, sizeof(buffer), SD_TIMEOUT, SD_MAX_RETRIES, &data, NULL)) return -EINVAL; |
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len = min_t(size_t, sizeof(buffer), data.length - data.header_length - |
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data.block_descriptor_length); buffer_data = buffer + data.header_length + data.block_descriptor_length; buffer_data[2] &= ~0x05; buffer_data[2] |= wce << 2 | rcd; sp = buffer_data[0] & 0x80 ? 1 : 0; if (scsi_mode_select(sdp, 1, sp, 8, buffer_data, len, SD_TIMEOUT, SD_MAX_RETRIES, &data, &sshdr)) { if (scsi_sense_valid(&sshdr)) |
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sd_print_sense_hdr(sdkp, &sshdr); |
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return -EINVAL; } |
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revalidate_disk(sdkp->disk); |
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return count; } |
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static ssize_t sd_store_manage_start_stop(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
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{ |
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struct scsi_disk *sdkp = to_scsi_disk(dev); |
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struct scsi_device *sdp = sdkp->device; if (!capable(CAP_SYS_ADMIN)) return -EACCES; sdp->manage_start_stop = simple_strtoul(buf, NULL, 10); return count; } |
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static ssize_t sd_store_allow_restart(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
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{ |
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struct scsi_disk *sdkp = to_scsi_disk(dev); |
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struct scsi_device *sdp = sdkp->device; if (!capable(CAP_SYS_ADMIN)) return -EACCES; if (sdp->type != TYPE_DISK) return -EINVAL; sdp->allow_restart = simple_strtoul(buf, NULL, 10); return count; } |
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static ssize_t sd_show_cache_type(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct scsi_disk *sdkp = to_scsi_disk(dev); |
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int ct = sdkp->RCD + 2*sdkp->WCE; return snprintf(buf, 40, "%s ", sd_cache_types[ct]); } |
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static ssize_t sd_show_fua(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct scsi_disk *sdkp = to_scsi_disk(dev); |
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return snprintf(buf, 20, "%u ", sdkp->DPOFUA); } |
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static ssize_t sd_show_manage_start_stop(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct scsi_disk *sdkp = to_scsi_disk(dev); |
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struct scsi_device *sdp = sdkp->device; return snprintf(buf, 20, "%u ", sdp->manage_start_stop); } |
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static ssize_t sd_show_allow_restart(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct scsi_disk *sdkp = to_scsi_disk(dev); |
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return snprintf(buf, 40, "%d ", sdkp->device->allow_restart); } |
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static ssize_t sd_show_protection_type(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_disk *sdkp = to_scsi_disk(dev); return snprintf(buf, 20, "%u ", sdkp->protection_type); } static ssize_t |
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sd_show_protection_mode(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_disk *sdkp = to_scsi_disk(dev); struct scsi_device *sdp = sdkp->device; unsigned int dif, dix; dif = scsi_host_dif_capable(sdp->host, sdkp->protection_type); dix = scsi_host_dix_capable(sdp->host, sdkp->protection_type); if (!dix && scsi_host_dix_capable(sdp->host, SD_DIF_TYPE0_PROTECTION)) { dif = 0; dix = 1; } if (!dif && !dix) return snprintf(buf, 20, "none "); return snprintf(buf, 20, "%s%u ", dix ? "dix" : "dif", dif); } static ssize_t |
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sd_show_app_tag_own(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_disk *sdkp = to_scsi_disk(dev); return snprintf(buf, 20, "%u ", sdkp->ATO); } |
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static ssize_t sd_show_thin_provisioning(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_disk *sdkp = to_scsi_disk(dev); |
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return snprintf(buf, 20, "%u ", sdkp->lbpme); } static const char *lbp_mode[] = { [SD_LBP_FULL] = "full", [SD_LBP_UNMAP] = "unmap", [SD_LBP_WS16] = "writesame_16", [SD_LBP_WS10] = "writesame_10", [SD_LBP_ZERO] = "writesame_zero", [SD_LBP_DISABLE] = "disabled", }; static ssize_t sd_show_provisioning_mode(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_disk *sdkp = to_scsi_disk(dev); return snprintf(buf, 20, "%s ", lbp_mode[sdkp->provisioning_mode]); } static ssize_t sd_store_provisioning_mode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct scsi_disk *sdkp = to_scsi_disk(dev); struct scsi_device *sdp = sdkp->device; if (!capable(CAP_SYS_ADMIN)) return -EACCES; if (sdp->type != TYPE_DISK) return -EINVAL; if (!strncmp(buf, lbp_mode[SD_LBP_UNMAP], 20)) sd_config_discard(sdkp, SD_LBP_UNMAP); else if (!strncmp(buf, lbp_mode[SD_LBP_WS16], 20)) sd_config_discard(sdkp, SD_LBP_WS16); else if (!strncmp(buf, lbp_mode[SD_LBP_WS10], 20)) sd_config_discard(sdkp, SD_LBP_WS10); else if (!strncmp(buf, lbp_mode[SD_LBP_ZERO], 20)) sd_config_discard(sdkp, SD_LBP_ZERO); else if (!strncmp(buf, lbp_mode[SD_LBP_DISABLE], 20)) sd_config_discard(sdkp, SD_LBP_DISABLE); else return -EINVAL; return count; |
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} |
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static struct device_attribute sd_disk_attrs[] = { |
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__ATTR(cache_type, S_IRUGO|S_IWUSR, sd_show_cache_type, sd_store_cache_type), __ATTR(FUA, S_IRUGO, sd_show_fua, NULL), |
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__ATTR(allow_restart, S_IRUGO|S_IWUSR, sd_show_allow_restart, sd_store_allow_restart), |
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__ATTR(manage_start_stop, S_IRUGO|S_IWUSR, sd_show_manage_start_stop, sd_store_manage_start_stop), |
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__ATTR(protection_type, S_IRUGO, sd_show_protection_type, NULL), |
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__ATTR(protection_mode, S_IRUGO, sd_show_protection_mode, NULL), |
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__ATTR(app_tag_own, S_IRUGO, sd_show_app_tag_own, NULL), |
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__ATTR(thin_provisioning, S_IRUGO, sd_show_thin_provisioning, NULL), |
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__ATTR(provisioning_mode, S_IRUGO|S_IWUSR, sd_show_provisioning_mode, sd_store_provisioning_mode), |
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__ATTR_NULL, }; static struct class sd_disk_class = { .name = "scsi_disk", .owner = THIS_MODULE, |
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.dev_release = scsi_disk_release, .dev_attrs = sd_disk_attrs, |
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}; |
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static struct scsi_driver sd_template = { .owner = THIS_MODULE, .gendrv = { .name = "sd", .probe = sd_probe, .remove = sd_remove, |
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.suspend = sd_suspend, .resume = sd_resume, |
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.shutdown = sd_shutdown, }, .rescan = sd_rescan, |
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.done = sd_done, |
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}; /* * Device no to disk mapping: * * major disc2 disc p1 * |............|.............|....|....| <- dev_t * 31 20 19 8 7 4 3 0 * * Inside a major, we have 16k disks, however mapped non- * contiguously. The first 16 disks are for major0, the next * ones with major1, ... Disk 256 is for major0 again, disk 272 * for major1, ... * As we stay compatible with our numbering scheme, we can reuse * the well-know SCSI majors 8, 65--71, 136--143. */ static int sd_major(int major_idx) { switch (major_idx) { case 0: return SCSI_DISK0_MAJOR; case 1 ... 7: return SCSI_DISK1_MAJOR + major_idx - 1; case 8 ... 15: return SCSI_DISK8_MAJOR + major_idx - 8; default: BUG(); return 0; /* shut up gcc */ } } |
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static struct scsi_disk *__scsi_disk_get(struct gendisk *disk) |
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{ struct scsi_disk *sdkp = NULL; |
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if (disk->private_data) { sdkp = scsi_disk(disk); if (scsi_device_get(sdkp->device) == 0) |
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get_device(&sdkp->dev); |
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else sdkp = NULL; } return sdkp; } static struct scsi_disk *scsi_disk_get(struct gendisk *disk) { struct scsi_disk *sdkp; |
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mutex_lock(&sd_ref_mutex); |
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sdkp = __scsi_disk_get(disk); |
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mutex_unlock(&sd_ref_mutex); |
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return sdkp; |
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} |
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static struct scsi_disk *scsi_disk_get_from_dev(struct device *dev) { struct scsi_disk *sdkp; |
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mutex_lock(&sd_ref_mutex); |
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sdkp = dev_get_drvdata(dev); if (sdkp) sdkp = __scsi_disk_get(sdkp->disk); |
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mutex_unlock(&sd_ref_mutex); |
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return sdkp; } static void scsi_disk_put(struct scsi_disk *sdkp) { struct scsi_device *sdev = sdkp->device; |
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mutex_lock(&sd_ref_mutex); |
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put_device(&sdkp->dev); |
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scsi_device_put(sdev); |
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mutex_unlock(&sd_ref_mutex); |
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} |
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static void sd_prot_op(struct scsi_cmnd *scmd, unsigned int dif) { unsigned int prot_op = SCSI_PROT_NORMAL; unsigned int dix = scsi_prot_sg_count(scmd); if (scmd->sc_data_direction == DMA_FROM_DEVICE) { if (dif && dix) prot_op = SCSI_PROT_READ_PASS; else if (dif && !dix) prot_op = SCSI_PROT_READ_STRIP; else if (!dif && dix) prot_op = SCSI_PROT_READ_INSERT; } else { if (dif && dix) prot_op = SCSI_PROT_WRITE_PASS; else if (dif && !dix) prot_op = SCSI_PROT_WRITE_INSERT; else if (!dif && dix) prot_op = SCSI_PROT_WRITE_STRIP; } scsi_set_prot_op(scmd, prot_op); scsi_set_prot_type(scmd, dif); } |
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static void sd_config_discard(struct scsi_disk *sdkp, unsigned int mode) { struct request_queue *q = sdkp->disk->queue; unsigned int logical_block_size = sdkp->device->sector_size; unsigned int max_blocks = 0; q->limits.discard_zeroes_data = sdkp->lbprz; |
2a8cfad06 [SCSI] sd: Unmap ... |
481 482 |
q->limits.discard_alignment = sdkp->unmap_alignment * logical_block_size; |
c98a0eb0e [SCSI] sd: Logica... |
483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 |
q->limits.discard_granularity = max(sdkp->physical_block_size, sdkp->unmap_granularity * logical_block_size); switch (mode) { case SD_LBP_DISABLE: q->limits.max_discard_sectors = 0; queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, q); return; case SD_LBP_UNMAP: max_blocks = min_not_zero(sdkp->max_unmap_blocks, 0xffffffff); break; case SD_LBP_WS16: max_blocks = min_not_zero(sdkp->max_ws_blocks, 0xffffffff); break; case SD_LBP_WS10: max_blocks = min_not_zero(sdkp->max_ws_blocks, (u32)0xffff); break; case SD_LBP_ZERO: max_blocks = min_not_zero(sdkp->max_ws_blocks, (u32)0xffff); q->limits.discard_zeroes_data = 1; break; } q->limits.max_discard_sectors = max_blocks * (logical_block_size >> 9); queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q); sdkp->provisioning_mode = mode; } |
1da177e4c Linux-2.6.12-rc2 |
517 |
/** |
66ac02801 block: don't allo... |
518 519 |
* scsi_setup_discard_cmnd - unmap blocks on thinly provisioned device * @sdp: scsi device to operate one |
e339c1a7c [SCSI] sd: WRITE ... |
520 521 522 523 524 |
* @rq: Request to prepare * * Will issue either UNMAP or WRITE SAME(16) depending on preference * indicated by target device. **/ |
66ac02801 block: don't allo... |
525 |
static int scsi_setup_discard_cmnd(struct scsi_device *sdp, struct request *rq) |
e339c1a7c [SCSI] sd: WRITE ... |
526 527 528 529 |
{ struct scsi_disk *sdkp = scsi_disk(rq->rq_disk); struct bio *bio = rq->bio; sector_t sector = bio->bi_sector; |
66ac02801 block: don't allo... |
530 531 |
unsigned int nr_sectors = bio_sectors(bio); unsigned int len; |
f1126e950 scsi: add sd_unpr... |
532 |
int ret; |
c98a0eb0e [SCSI] sd: Logica... |
533 |
char *buf; |
66ac02801 block: don't allo... |
534 |
struct page *page; |
e339c1a7c [SCSI] sd: WRITE ... |
535 536 537 |
if (sdkp->device->sector_size == 4096) { sector >>= 3; |
66ac02801 block: don't allo... |
538 |
nr_sectors >>= 3; |
e339c1a7c [SCSI] sd: WRITE ... |
539 |
} |
e339c1a7c [SCSI] sd: WRITE ... |
540 541 542 |
rq->timeout = SD_TIMEOUT; memset(rq->cmd, 0, rq->cmd_len); |
66ac02801 block: don't allo... |
543 544 545 |
page = alloc_page(GFP_ATOMIC | __GFP_ZERO); if (!page) return BLKPREP_DEFER; |
c98a0eb0e [SCSI] sd: Logica... |
546 547 548 |
switch (sdkp->provisioning_mode) { case SD_LBP_UNMAP: buf = page_address(page); |
e339c1a7c [SCSI] sd: WRITE ... |
549 |
|
66ac02801 block: don't allo... |
550 |
rq->cmd_len = 10; |
e339c1a7c [SCSI] sd: WRITE ... |
551 552 |
rq->cmd[0] = UNMAP; rq->cmd[8] = 24; |
e339c1a7c [SCSI] sd: WRITE ... |
553 554 555 556 |
put_unaligned_be16(6 + 16, &buf[0]); put_unaligned_be16(16, &buf[2]); put_unaligned_be64(sector, &buf[8]); |
66ac02801 block: don't allo... |
557 |
put_unaligned_be32(nr_sectors, &buf[16]); |
e339c1a7c [SCSI] sd: WRITE ... |
558 |
|
66ac02801 block: don't allo... |
559 |
len = 24; |
c98a0eb0e [SCSI] sd: Logica... |
560 561 562 |
break; case SD_LBP_WS16: |
66ac02801 block: don't allo... |
563 |
rq->cmd_len = 16; |
e339c1a7c [SCSI] sd: WRITE ... |
564 565 566 |
rq->cmd[0] = WRITE_SAME_16; rq->cmd[1] = 0x8; /* UNMAP */ put_unaligned_be64(sector, &rq->cmd[2]); |
66ac02801 block: don't allo... |
567 568 569 |
put_unaligned_be32(nr_sectors, &rq->cmd[10]); len = sdkp->device->sector_size; |
c98a0eb0e [SCSI] sd: Logica... |
570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 |
break; case SD_LBP_WS10: case SD_LBP_ZERO: rq->cmd_len = 10; rq->cmd[0] = WRITE_SAME; if (sdkp->provisioning_mode == SD_LBP_WS10) rq->cmd[1] = 0x8; /* UNMAP */ put_unaligned_be32(sector, &rq->cmd[2]); put_unaligned_be16(nr_sectors, &rq->cmd[7]); len = sdkp->device->sector_size; break; default: |
09b9cc44c sd: Fail discard ... |
585 |
ret = BLKPREP_KILL; |
c98a0eb0e [SCSI] sd: Logica... |
586 |
goto out; |
e339c1a7c [SCSI] sd: WRITE ... |
587 |
} |
66ac02801 block: don't allo... |
588 |
blk_add_request_payload(rq, page, len); |
f1126e950 scsi: add sd_unpr... |
589 590 |
ret = scsi_setup_blk_pc_cmnd(sdp, rq); rq->buffer = page_address(page); |
c98a0eb0e [SCSI] sd: Logica... |
591 592 |
out: |
610a63498 scsi: fix discard... |
593 594 595 596 |
if (ret != BLKPREP_OK) { __free_page(page); rq->buffer = NULL; } |
f1126e950 scsi: add sd_unpr... |
597 598 |
return ret; } |
90467c294 scsi: stop using ... |
599 600 |
static int scsi_setup_flush_cmnd(struct scsi_device *sdp, struct request *rq) { |
e3b3e6246 [SCSI] scsi/block... |
601 |
rq->timeout = SD_FLUSH_TIMEOUT; |
90467c294 scsi: stop using ... |
602 603 604 605 606 607 |
rq->retries = SD_MAX_RETRIES; rq->cmd[0] = SYNCHRONIZE_CACHE; rq->cmd_len = 10; return scsi_setup_blk_pc_cmnd(sdp, rq); } |
f1126e950 scsi: add sd_unpr... |
608 609 |
static void sd_unprep_fn(struct request_queue *q, struct request *rq) { |
610a63498 scsi: fix discard... |
610 611 612 613 |
if (rq->cmd_flags & REQ_DISCARD) { free_page((unsigned long)rq->buffer); rq->buffer = NULL; } |
e339c1a7c [SCSI] sd: WRITE ... |
614 615 616 |
} /** |
1da177e4c Linux-2.6.12-rc2 |
617 618 619 620 621 622 623 |
* sd_init_command - build a scsi (read or write) command from * information in the request structure. * @SCpnt: pointer to mid-level's per scsi command structure that * contains request and into which the scsi command is written * * Returns 1 if successful and 0 if error (or cannot be done now). **/ |
7f9a6bc4e [SCSI] move ULD a... |
624 |
static int sd_prep_fn(struct request_queue *q, struct request *rq) |
1da177e4c Linux-2.6.12-rc2 |
625 |
{ |
7f9a6bc4e [SCSI] move ULD a... |
626 627 |
struct scsi_cmnd *SCpnt; struct scsi_device *sdp = q->queuedata; |
776b23a03 [SCSI] always han... |
628 |
struct gendisk *disk = rq->rq_disk; |
af55ff675 [SCSI] sd: Suppor... |
629 |
struct scsi_disk *sdkp; |
83096ebf1 block: convert to... |
630 |
sector_t block = blk_rq_pos(rq); |
18351070b Re-introduce "[SC... |
631 |
sector_t threshold; |
83096ebf1 block: convert to... |
632 |
unsigned int this_count = blk_rq_sectors(rq); |
bd623e79f [SCSI] sd: Issue ... |
633 |
int ret, host_dif; |
4e7392ec5 [SCSI] sd: Suppor... |
634 |
unsigned char protect; |
7f9a6bc4e [SCSI] move ULD a... |
635 |
|
e339c1a7c [SCSI] sd: WRITE ... |
636 637 638 639 |
/* * Discard request come in as REQ_TYPE_FS but we turn them into * block PC requests to make life easier. */ |
66ac02801 block: don't allo... |
640 641 642 |
if (rq->cmd_flags & REQ_DISCARD) { ret = scsi_setup_discard_cmnd(sdp, rq); goto out; |
90467c294 scsi: stop using ... |
643 644 645 |
} else if (rq->cmd_flags & REQ_FLUSH) { ret = scsi_setup_flush_cmnd(sdp, rq); goto out; |
66ac02801 block: don't allo... |
646 |
} else if (rq->cmd_type == REQ_TYPE_BLOCK_PC) { |
7f9a6bc4e [SCSI] move ULD a... |
647 648 649 650 651 652 653 654 655 656 |
ret = scsi_setup_blk_pc_cmnd(sdp, rq); goto out; } else if (rq->cmd_type != REQ_TYPE_FS) { ret = BLKPREP_KILL; goto out; } ret = scsi_setup_fs_cmnd(sdp, rq); if (ret != BLKPREP_OK) goto out; SCpnt = rq->special; |
af55ff675 [SCSI] sd: Suppor... |
657 |
sdkp = scsi_disk(disk); |
7f9a6bc4e [SCSI] move ULD a... |
658 659 660 661 |
/* from here on until we're complete, any goto out * is used for a killable error condition */ ret = BLKPREP_KILL; |
1da177e4c Linux-2.6.12-rc2 |
662 |
|
fa0d34be0 [SCSI] sd: conver... |
663 664 665 666 667 668 |
SCSI_LOG_HLQUEUE(1, scmd_printk(KERN_INFO, SCpnt, "sd_init_command: block=%llu, " "count=%d ", (unsigned long long)block, this_count)); |
1da177e4c Linux-2.6.12-rc2 |
669 670 |
if (!sdp || !scsi_device_online(sdp) || |
83096ebf1 block: convert to... |
671 |
block + blk_rq_sectors(rq) > get_capacity(disk)) { |
fa0d34be0 [SCSI] sd: conver... |
672 |
SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt, |
83096ebf1 block: convert to... |
673 674 675 |
"Finishing %u sectors ", blk_rq_sectors(rq))); |
fa0d34be0 [SCSI] sd: conver... |
676 677 678 |
SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt, "Retry with 0x%p ", SCpnt)); |
7f9a6bc4e [SCSI] move ULD a... |
679 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
680 681 682 683 684 685 686 |
} if (sdp->changed) { /* * quietly refuse to do anything to a changed disc until * the changed bit has been reset */ |
3ff5588d3 [SCSI] sd: improv... |
687 688 |
/* printk("SCSI disk has been changed or is not present. Prohibiting further I/O. "); */ |
7f9a6bc4e [SCSI] move ULD a... |
689 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
690 |
} |
7f9a6bc4e [SCSI] move ULD a... |
691 |
|
a0899d4df [SCSI] sd: add fi... |
692 |
/* |
18351070b Re-introduce "[SC... |
693 694 |
* Some SD card readers can't handle multi-sector accesses which touch * the last one or two hardware sectors. Split accesses as needed. |
a0899d4df [SCSI] sd: add fi... |
695 |
*/ |
18351070b Re-introduce "[SC... |
696 697 698 699 700 701 702 703 704 705 706 707 |
threshold = get_capacity(disk) - SD_LAST_BUGGY_SECTORS * (sdp->sector_size / 512); if (unlikely(sdp->last_sector_bug && block + this_count > threshold)) { if (block < threshold) { /* Access up to the threshold but not beyond */ this_count = threshold - block; } else { /* Access only a single hardware sector */ this_count = sdp->sector_size / 512; } } |
a0899d4df [SCSI] sd: add fi... |
708 |
|
fa0d34be0 [SCSI] sd: conver... |
709 710 711 |
SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt, "block=%llu ", (unsigned long long)block)); |
1da177e4c Linux-2.6.12-rc2 |
712 713 714 715 716 717 718 719 720 721 722 723 724 |
/* * If we have a 1K hardware sectorsize, prevent access to single * 512 byte sectors. In theory we could handle this - in fact * the scsi cdrom driver must be able to handle this because * we typically use 1K blocksizes, and cdroms typically have * 2K hardware sectorsizes. Of course, things are simpler * with the cdrom, since it is read-only. For performance * reasons, the filesystems should be able to handle this * and not force the scsi disk driver to use bounce buffers * for this. */ if (sdp->sector_size == 1024) { |
83096ebf1 block: convert to... |
725 |
if ((block & 1) || (blk_rq_sectors(rq) & 1)) { |
e73aec824 [SCSI] sd: make p... |
726 727 728 |
scmd_printk(KERN_ERR, SCpnt, "Bad block number requested "); |
7f9a6bc4e [SCSI] move ULD a... |
729 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
730 731 732 733 734 735 |
} else { block = block >> 1; this_count = this_count >> 1; } } if (sdp->sector_size == 2048) { |
83096ebf1 block: convert to... |
736 |
if ((block & 3) || (blk_rq_sectors(rq) & 3)) { |
e73aec824 [SCSI] sd: make p... |
737 738 739 |
scmd_printk(KERN_ERR, SCpnt, "Bad block number requested "); |
7f9a6bc4e [SCSI] move ULD a... |
740 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
741 742 743 744 745 746 |
} else { block = block >> 2; this_count = this_count >> 2; } } if (sdp->sector_size == 4096) { |
83096ebf1 block: convert to... |
747 |
if ((block & 7) || (blk_rq_sectors(rq) & 7)) { |
e73aec824 [SCSI] sd: make p... |
748 749 750 |
scmd_printk(KERN_ERR, SCpnt, "Bad block number requested "); |
7f9a6bc4e [SCSI] move ULD a... |
751 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
752 753 754 755 756 757 758 |
} else { block = block >> 3; this_count = this_count >> 3; } } if (rq_data_dir(rq) == WRITE) { if (!sdp->writeable) { |
7f9a6bc4e [SCSI] move ULD a... |
759 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
760 761 762 |
} SCpnt->cmnd[0] = WRITE_6; SCpnt->sc_data_direction = DMA_TO_DEVICE; |
af55ff675 [SCSI] sd: Suppor... |
763 764 765 766 |
if (blk_integrity_rq(rq) && sd_dif_prepare(rq, block, sdp->sector_size) == -EIO) goto out; |
1da177e4c Linux-2.6.12-rc2 |
767 768 769 770 |
} else if (rq_data_dir(rq) == READ) { SCpnt->cmnd[0] = READ_6; SCpnt->sc_data_direction = DMA_FROM_DEVICE; } else { |
e73aec824 [SCSI] sd: make p... |
771 772 |
scmd_printk(KERN_ERR, SCpnt, "Unknown command %x ", rq->cmd_flags); |
7f9a6bc4e [SCSI] move ULD a... |
773 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
774 |
} |
fa0d34be0 [SCSI] sd: conver... |
775 |
SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt, |
83096ebf1 block: convert to... |
776 777 |
"%s %d/%u 512 byte blocks. ", |
fa0d34be0 [SCSI] sd: conver... |
778 779 |
(rq_data_dir(rq) == WRITE) ? "writing" : "reading", this_count, |
83096ebf1 block: convert to... |
780 |
blk_rq_sectors(rq))); |
1da177e4c Linux-2.6.12-rc2 |
781 |
|
af55ff675 [SCSI] sd: Suppor... |
782 |
/* Set RDPROTECT/WRPROTECT if disk is formatted with DIF */ |
bd623e79f [SCSI] sd: Issue ... |
783 784 |
host_dif = scsi_host_dif_capable(sdp->host, sdkp->protection_type); if (host_dif) |
4e7392ec5 [SCSI] sd: Suppor... |
785 |
protect = 1 << 5; |
af55ff675 [SCSI] sd: Suppor... |
786 |
else |
4e7392ec5 [SCSI] sd: Suppor... |
787 788 789 790 791 792 793 794 795 |
protect = 0; if (host_dif == SD_DIF_TYPE2_PROTECTION) { SCpnt->cmnd = mempool_alloc(sd_cdb_pool, GFP_ATOMIC); if (unlikely(SCpnt->cmnd == NULL)) { ret = BLKPREP_DEFER; goto out; } |
af55ff675 [SCSI] sd: Suppor... |
796 |
|
4e7392ec5 [SCSI] sd: Suppor... |
797 798 799 800 801 |
SCpnt->cmd_len = SD_EXT_CDB_SIZE; memset(SCpnt->cmnd, 0, SCpnt->cmd_len); SCpnt->cmnd[0] = VARIABLE_LENGTH_CMD; SCpnt->cmnd[7] = 0x18; SCpnt->cmnd[9] = (rq_data_dir(rq) == READ) ? READ_32 : WRITE_32; |
33659ebba block: remove wra... |
802 |
SCpnt->cmnd[10] = protect | ((rq->cmd_flags & REQ_FUA) ? 0x8 : 0); |
4e7392ec5 [SCSI] sd: Suppor... |
803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 |
/* LBA */ SCpnt->cmnd[12] = sizeof(block) > 4 ? (unsigned char) (block >> 56) & 0xff : 0; SCpnt->cmnd[13] = sizeof(block) > 4 ? (unsigned char) (block >> 48) & 0xff : 0; SCpnt->cmnd[14] = sizeof(block) > 4 ? (unsigned char) (block >> 40) & 0xff : 0; SCpnt->cmnd[15] = sizeof(block) > 4 ? (unsigned char) (block >> 32) & 0xff : 0; SCpnt->cmnd[16] = (unsigned char) (block >> 24) & 0xff; SCpnt->cmnd[17] = (unsigned char) (block >> 16) & 0xff; SCpnt->cmnd[18] = (unsigned char) (block >> 8) & 0xff; SCpnt->cmnd[19] = (unsigned char) block & 0xff; /* Expected Indirect LBA */ SCpnt->cmnd[20] = (unsigned char) (block >> 24) & 0xff; SCpnt->cmnd[21] = (unsigned char) (block >> 16) & 0xff; SCpnt->cmnd[22] = (unsigned char) (block >> 8) & 0xff; SCpnt->cmnd[23] = (unsigned char) block & 0xff; /* Transfer length */ SCpnt->cmnd[28] = (unsigned char) (this_count >> 24) & 0xff; SCpnt->cmnd[29] = (unsigned char) (this_count >> 16) & 0xff; SCpnt->cmnd[30] = (unsigned char) (this_count >> 8) & 0xff; SCpnt->cmnd[31] = (unsigned char) this_count & 0xff; } else if (block > 0xffffffff) { |
1da177e4c Linux-2.6.12-rc2 |
826 |
SCpnt->cmnd[0] += READ_16 - READ_6; |
33659ebba block: remove wra... |
827 |
SCpnt->cmnd[1] = protect | ((rq->cmd_flags & REQ_FUA) ? 0x8 : 0); |
1da177e4c Linux-2.6.12-rc2 |
828 829 830 831 832 833 834 835 836 837 838 839 840 841 |
SCpnt->cmnd[2] = sizeof(block) > 4 ? (unsigned char) (block >> 56) & 0xff : 0; SCpnt->cmnd[3] = sizeof(block) > 4 ? (unsigned char) (block >> 48) & 0xff : 0; SCpnt->cmnd[4] = sizeof(block) > 4 ? (unsigned char) (block >> 40) & 0xff : 0; SCpnt->cmnd[5] = sizeof(block) > 4 ? (unsigned char) (block >> 32) & 0xff : 0; SCpnt->cmnd[6] = (unsigned char) (block >> 24) & 0xff; SCpnt->cmnd[7] = (unsigned char) (block >> 16) & 0xff; SCpnt->cmnd[8] = (unsigned char) (block >> 8) & 0xff; SCpnt->cmnd[9] = (unsigned char) block & 0xff; SCpnt->cmnd[10] = (unsigned char) (this_count >> 24) & 0xff; SCpnt->cmnd[11] = (unsigned char) (this_count >> 16) & 0xff; SCpnt->cmnd[12] = (unsigned char) (this_count >> 8) & 0xff; SCpnt->cmnd[13] = (unsigned char) this_count & 0xff; SCpnt->cmnd[14] = SCpnt->cmnd[15] = 0; } else if ((this_count > 0xff) || (block > 0x1fffff) || |
af55ff675 [SCSI] sd: Suppor... |
842 |
scsi_device_protection(SCpnt->device) || |
1da177e4c Linux-2.6.12-rc2 |
843 844 845 846 847 |
SCpnt->device->use_10_for_rw) { if (this_count > 0xffff) this_count = 0xffff; SCpnt->cmnd[0] += READ_10 - READ_6; |
33659ebba block: remove wra... |
848 |
SCpnt->cmnd[1] = protect | ((rq->cmd_flags & REQ_FUA) ? 0x8 : 0); |
1da177e4c Linux-2.6.12-rc2 |
849 850 851 852 853 854 855 856 |
SCpnt->cmnd[2] = (unsigned char) (block >> 24) & 0xff; SCpnt->cmnd[3] = (unsigned char) (block >> 16) & 0xff; SCpnt->cmnd[4] = (unsigned char) (block >> 8) & 0xff; SCpnt->cmnd[5] = (unsigned char) block & 0xff; SCpnt->cmnd[6] = SCpnt->cmnd[9] = 0; SCpnt->cmnd[7] = (unsigned char) (this_count >> 8) & 0xff; SCpnt->cmnd[8] = (unsigned char) this_count & 0xff; } else { |
33659ebba block: remove wra... |
857 |
if (unlikely(rq->cmd_flags & REQ_FUA)) { |
007365ad6 [BLOCK] scsi: add... |
858 859 860 861 862 863 |
/* * This happens only if this drive failed * 10byte rw command with ILLEGAL_REQUEST * during operation and thus turned off * use_10_for_rw. */ |
e73aec824 [SCSI] sd: make p... |
864 865 866 |
scmd_printk(KERN_ERR, SCpnt, "FUA write on READ/WRITE(6) drive "); |
7f9a6bc4e [SCSI] move ULD a... |
867 |
goto out; |
007365ad6 [BLOCK] scsi: add... |
868 |
} |
1da177e4c Linux-2.6.12-rc2 |
869 870 871 872 873 874 |
SCpnt->cmnd[1] |= (unsigned char) ((block >> 16) & 0x1f); SCpnt->cmnd[2] = (unsigned char) ((block >> 8) & 0xff); SCpnt->cmnd[3] = (unsigned char) block & 0xff; SCpnt->cmnd[4] = (unsigned char) this_count; SCpnt->cmnd[5] = 0; } |
30b0c37b2 [SCSI] implement ... |
875 |
SCpnt->sdb.length = this_count * sdp->sector_size; |
1da177e4c Linux-2.6.12-rc2 |
876 |
|
af55ff675 [SCSI] sd: Suppor... |
877 |
/* If DIF or DIX is enabled, tell HBA how to handle request */ |
bd623e79f [SCSI] sd: Issue ... |
878 |
if (host_dif || scsi_prot_sg_count(SCpnt)) |
35e1a5d90 [SCSI] sd: Detach... |
879 |
sd_prot_op(SCpnt, host_dif); |
af55ff675 [SCSI] sd: Suppor... |
880 |
|
1da177e4c Linux-2.6.12-rc2 |
881 882 883 884 885 886 887 888 |
/* * We shouldn't disconnect in the middle of a sector, so with a dumb * host adapter, it's safe to assume that we can at least transfer * this many bytes between each connect / disconnect. */ SCpnt->transfersize = sdp->sector_size; SCpnt->underflow = this_count << 9; SCpnt->allowed = SD_MAX_RETRIES; |
1da177e4c Linux-2.6.12-rc2 |
889 890 |
/* |
1da177e4c Linux-2.6.12-rc2 |
891 892 893 |
* This indicates that the command is ready from our end to be * queued. */ |
7f9a6bc4e [SCSI] move ULD a... |
894 895 896 |
ret = BLKPREP_OK; out: return scsi_prep_return(q, rq, ret); |
1da177e4c Linux-2.6.12-rc2 |
897 898 899 900 901 902 903 904 905 906 907 908 909 910 |
} /** * sd_open - open a scsi disk device * @inode: only i_rdev member may be used * @filp: only f_mode and f_flags may be used * * Returns 0 if successful. Returns a negated errno value in case * of error. * * Note: This can be called from a user context (e.g. fsck(1) ) * or from within the kernel (e.g. as a result of a mount(1) ). * In the latter case @inode and @filp carry an abridged amount * of information as noted above. |
409f3499a scsi/sd: remove b... |
911 912 |
* * Locking: called with bdev->bd_mutex held. |
1da177e4c Linux-2.6.12-rc2 |
913 |
**/ |
0338e2917 [PATCH] switch sd |
914 |
static int sd_open(struct block_device *bdev, fmode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
915 |
{ |
0338e2917 [PATCH] switch sd |
916 |
struct scsi_disk *sdkp = scsi_disk_get(bdev->bd_disk); |
1da177e4c Linux-2.6.12-rc2 |
917 918 |
struct scsi_device *sdev; int retval; |
0338e2917 [PATCH] switch sd |
919 |
if (!sdkp) |
1da177e4c Linux-2.6.12-rc2 |
920 |
return -ENXIO; |
fa0d34be0 [SCSI] sd: conver... |
921 922 |
SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_open ")); |
1da177e4c Linux-2.6.12-rc2 |
923 924 |
sdev = sdkp->device; |
478a8a054 [SCSI] sd: add su... |
925 926 927 |
retval = scsi_autopm_get_device(sdev); if (retval) goto error_autopm; |
1da177e4c Linux-2.6.12-rc2 |
928 929 930 931 932 933 934 935 936 |
/* * If the device is in error recovery, wait until it is done. * If the device is offline, then disallow any access to it. */ retval = -ENXIO; if (!scsi_block_when_processing_errors(sdev)) goto error_out; if (sdev->removable || sdkp->write_prot) |
0338e2917 [PATCH] switch sd |
937 |
check_disk_change(bdev); |
1da177e4c Linux-2.6.12-rc2 |
938 939 940 941 942 |
/* * If the drive is empty, just let the open fail. */ retval = -ENOMEDIUM; |
0338e2917 [PATCH] switch sd |
943 |
if (sdev->removable && !sdkp->media_present && !(mode & FMODE_NDELAY)) |
1da177e4c Linux-2.6.12-rc2 |
944 945 946 947 948 949 950 |
goto error_out; /* * If the device has the write protect tab set, have the open fail * if the user expects to be able to write to the thing. */ retval = -EROFS; |
0338e2917 [PATCH] switch sd |
951 |
if (sdkp->write_prot && (mode & FMODE_WRITE)) |
1da177e4c Linux-2.6.12-rc2 |
952 953 954 955 956 957 958 959 960 961 962 |
goto error_out; /* * It is possible that the disk changing stuff resulted in * the device being taken offline. If this is the case, * report this to the user, and don't pretend that the * open actually succeeded. */ retval = -ENXIO; if (!scsi_device_online(sdev)) goto error_out; |
409f3499a scsi/sd: remove b... |
963 |
if ((atomic_inc_return(&sdkp->openers) == 1) && sdev->removable) { |
1da177e4c Linux-2.6.12-rc2 |
964 965 966 967 968 969 970 |
if (scsi_block_when_processing_errors(sdev)) scsi_set_medium_removal(sdev, SCSI_REMOVAL_PREVENT); } return 0; error_out: |
478a8a054 [SCSI] sd: add su... |
971 972 |
scsi_autopm_put_device(sdev); error_autopm: |
1da177e4c Linux-2.6.12-rc2 |
973 974 975 976 977 978 979 980 981 982 983 984 985 986 |
scsi_disk_put(sdkp); return retval; } /** * sd_release - invoked when the (last) close(2) is called on this * scsi disk. * @inode: only i_rdev member may be used * @filp: only f_mode and f_flags may be used * * Returns 0. * * Note: may block (uninterruptible) if error recovery is underway * on this disk. |
409f3499a scsi/sd: remove b... |
987 988 |
* * Locking: called with bdev->bd_mutex held. |
1da177e4c Linux-2.6.12-rc2 |
989 |
**/ |
0338e2917 [PATCH] switch sd |
990 |
static int sd_release(struct gendisk *disk, fmode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
991 |
{ |
1da177e4c Linux-2.6.12-rc2 |
992 993 |
struct scsi_disk *sdkp = scsi_disk(disk); struct scsi_device *sdev = sdkp->device; |
56937f7b7 [SCSI] sd: typo f... |
994 995 |
SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_release ")); |
1da177e4c Linux-2.6.12-rc2 |
996 |
|
7e4433124 [SCSI] sd: fix me... |
997 |
if (atomic_dec_return(&sdkp->openers) == 0 && sdev->removable) { |
1da177e4c Linux-2.6.12-rc2 |
998 999 1000 1001 1002 1003 1004 1005 |
if (scsi_block_when_processing_errors(sdev)) scsi_set_medium_removal(sdev, SCSI_REMOVAL_ALLOW); } /* * XXX and what if there are packets in flight and this close() * XXX is followed by a "rmmod sd_mod"? */ |
478a8a054 [SCSI] sd: add su... |
1006 1007 |
scsi_autopm_put_device(sdev); |
1da177e4c Linux-2.6.12-rc2 |
1008 1009 1010 |
scsi_disk_put(sdkp); return 0; } |
a885c8c43 [PATCH] Add block... |
1011 |
static int sd_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1da177e4c Linux-2.6.12-rc2 |
1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 |
{ struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk); struct scsi_device *sdp = sdkp->device; struct Scsi_Host *host = sdp->host; int diskinfo[4]; /* default to most commonly used values */ diskinfo[0] = 0x40; /* 1 << 6 */ diskinfo[1] = 0x20; /* 1 << 5 */ diskinfo[2] = sdkp->capacity >> 11; /* override with calculated, extended default, or driver values */ if (host->hostt->bios_param) host->hostt->bios_param(sdp, bdev, sdkp->capacity, diskinfo); else scsicam_bios_param(bdev, sdkp->capacity, diskinfo); |
a885c8c43 [PATCH] Add block... |
1028 1029 1030 |
geo->heads = diskinfo[0]; geo->sectors = diskinfo[1]; geo->cylinders = diskinfo[2]; |
1da177e4c Linux-2.6.12-rc2 |
1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 |
return 0; } /** * sd_ioctl - process an ioctl * @inode: only i_rdev/i_bdev members may be used * @filp: only f_mode and f_flags may be used * @cmd: ioctl command number * @arg: this is third argument given to ioctl(2) system call. * Often contains a pointer. * |
25985edce Fix common misspe... |
1042 |
* Returns 0 if successful (some ioctls return positive numbers on |
1da177e4c Linux-2.6.12-rc2 |
1043 1044 1045 |
* success as well). Returns a negated errno value in case of error. * * Note: most ioctls are forward onto the block subsystem or further |
3a4fa0a25 Fix misspellings ... |
1046 |
* down in the scsi subsystem. |
1da177e4c Linux-2.6.12-rc2 |
1047 |
**/ |
0338e2917 [PATCH] switch sd |
1048 |
static int sd_ioctl(struct block_device *bdev, fmode_t mode, |
1da177e4c Linux-2.6.12-rc2 |
1049 1050 |
unsigned int cmd, unsigned long arg) { |
1da177e4c Linux-2.6.12-rc2 |
1051 |
struct gendisk *disk = bdev->bd_disk; |
fe2d1851e [SCSI] sd: Use sd... |
1052 1053 |
struct scsi_disk *sdkp = scsi_disk(disk); struct scsi_device *sdp = sdkp->device; |
1da177e4c Linux-2.6.12-rc2 |
1054 1055 1056 |
void __user *p = (void __user *)arg; int error; |
fe2d1851e [SCSI] sd: Use sd... |
1057 1058 1059 |
SCSI_LOG_IOCTL(1, sd_printk(KERN_INFO, sdkp, "sd_ioctl: disk=%s, " "cmd=0x%x ", disk->disk_name, cmd)); |
1da177e4c Linux-2.6.12-rc2 |
1060 |
|
0bfc96cb7 block: fail SCSI ... |
1061 1062 1063 |
error = scsi_verify_blk_ioctl(bdev, cmd); if (error < 0) return error; |
1da177e4c Linux-2.6.12-rc2 |
1064 1065 1066 1067 1068 1069 |
/* * If we are in the middle of error recovery, don't let anyone * else try and use this device. Also, if error recovery fails, it * may try and take the device offline, in which case all further * access to the device is prohibited. */ |
83ff6fe85 [PATCH] don't mes... |
1070 |
error = scsi_nonblockable_ioctl(sdp, cmd, p, |
fd4ce1acd [PATCH 1/2] kill ... |
1071 |
(mode & FMODE_NDELAY) != 0); |
1da177e4c Linux-2.6.12-rc2 |
1072 |
if (!scsi_block_when_processing_errors(sdp) || !error) |
8a6cfeb6d block: push down ... |
1073 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1074 |
|
1da177e4c Linux-2.6.12-rc2 |
1075 1076 1077 1078 1079 1080 1081 1082 |
/* * Send SCSI addressing ioctls directly to mid level, send other * ioctls to block level and then onto mid level if they can't be * resolved. */ switch (cmd) { case SCSI_IOCTL_GET_IDLUN: case SCSI_IOCTL_GET_BUS_NUMBER: |
8a6cfeb6d block: push down ... |
1083 1084 |
error = scsi_ioctl(sdp, cmd, p); break; |
1da177e4c Linux-2.6.12-rc2 |
1085 |
default: |
577ebb374 block: add and us... |
1086 |
error = scsi_cmd_blk_ioctl(bdev, mode, cmd, p); |
1da177e4c Linux-2.6.12-rc2 |
1087 |
if (error != -ENOTTY) |
8a6cfeb6d block: push down ... |
1088 1089 1090 |
break; error = scsi_ioctl(sdp, cmd, p); break; |
1da177e4c Linux-2.6.12-rc2 |
1091 |
} |
8a6cfeb6d block: push down ... |
1092 |
out: |
8a6cfeb6d block: push down ... |
1093 |
return error; |
1da177e4c Linux-2.6.12-rc2 |
1094 1095 1096 1097 |
} static void set_media_not_present(struct scsi_disk *sdkp) { |
2bae0093c [SCSI] sd: implem... |
1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 |
if (sdkp->media_present) sdkp->device->changed = 1; if (sdkp->device->removable) { sdkp->media_present = 0; sdkp->capacity = 0; } } static int media_not_present(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr) { if (!scsi_sense_valid(sshdr)) return 0; /* not invoked for commands that could return deferred errors */ switch (sshdr->sense_key) { case UNIT_ATTENTION: case NOT_READY: /* medium not present */ if (sshdr->asc == 0x3A) { set_media_not_present(sdkp); return 1; } } return 0; |
1da177e4c Linux-2.6.12-rc2 |
1124 1125 1126 |
} /** |
2bae0093c [SCSI] sd: implem... |
1127 1128 1129 |
* sd_check_events - check media events * @disk: kernel device descriptor * @clearing: disk events currently being cleared |
1da177e4c Linux-2.6.12-rc2 |
1130 |
* |
2bae0093c [SCSI] sd: implem... |
1131 |
* Returns mask of DISK_EVENT_*. |
1da177e4c Linux-2.6.12-rc2 |
1132 1133 1134 |
* * Note: this function is invoked from the block subsystem. **/ |
2bae0093c [SCSI] sd: implem... |
1135 |
static unsigned int sd_check_events(struct gendisk *disk, unsigned int clearing) |
1da177e4c Linux-2.6.12-rc2 |
1136 1137 1138 |
{ struct scsi_disk *sdkp = scsi_disk(disk); struct scsi_device *sdp = sdkp->device; |
001aac257 [SCSI] sd,sr: add... |
1139 |
struct scsi_sense_hdr *sshdr = NULL; |
1da177e4c Linux-2.6.12-rc2 |
1140 |
int retval; |
2bae0093c [SCSI] sd: implem... |
1141 1142 |
SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_check_events ")); |
1da177e4c Linux-2.6.12-rc2 |
1143 1144 1145 1146 1147 1148 1149 |
/* * If the device is offline, don't send any commands - just pretend as * if the command failed. If the device ever comes back online, we * can deal with it then. It is only because of unrecoverable errors * that we would ever take a device offline in the first place. */ |
285e9670d [SCSI] sr,sd: sen... |
1150 1151 |
if (!scsi_device_online(sdp)) { set_media_not_present(sdkp); |
285e9670d [SCSI] sr,sd: sen... |
1152 1153 |
goto out; } |
1da177e4c Linux-2.6.12-rc2 |
1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 |
/* * Using TEST_UNIT_READY enables differentiation between drive with * no cartridge loaded - NOT READY, drive with changed cartridge - * UNIT ATTENTION, or with same cartridge - GOOD STATUS. * * Drives that auto spin down. eg iomega jaz 1G, will be started * by sd_spinup_disk() from sd_revalidate_disk(), which happens whenever * sd_revalidate() is called. */ retval = -ENODEV; |
285e9670d [SCSI] sr,sd: sen... |
1165 |
|
001aac257 [SCSI] sd,sr: add... |
1166 1167 1168 1169 1170 |
if (scsi_block_when_processing_errors(sdp)) { sshdr = kzalloc(sizeof(*sshdr), GFP_KERNEL); retval = scsi_test_unit_ready(sdp, SD_TIMEOUT, SD_MAX_RETRIES, sshdr); } |
1da177e4c Linux-2.6.12-rc2 |
1171 |
|
2bae0093c [SCSI] sd: implem... |
1172 1173 |
/* failed to execute TUR, assume media not present */ if (host_byte(retval)) { |
285e9670d [SCSI] sr,sd: sen... |
1174 |
set_media_not_present(sdkp); |
285e9670d [SCSI] sr,sd: sen... |
1175 1176 |
goto out; } |
1da177e4c Linux-2.6.12-rc2 |
1177 |
|
2bae0093c [SCSI] sd: implem... |
1178 1179 |
if (media_not_present(sdkp, sshdr)) goto out; |
1da177e4c Linux-2.6.12-rc2 |
1180 1181 |
/* * For removable scsi disk we have to recognise the presence |
2bae0093c [SCSI] sd: implem... |
1182 |
* of a disk in the drive. |
1da177e4c Linux-2.6.12-rc2 |
1183 |
*/ |
2bae0093c [SCSI] sd: implem... |
1184 1185 |
if (!sdkp->media_present) sdp->changed = 1; |
1da177e4c Linux-2.6.12-rc2 |
1186 |
sdkp->media_present = 1; |
285e9670d [SCSI] sr,sd: sen... |
1187 |
out: |
3ff5588d3 [SCSI] sd: improv... |
1188 |
/* |
2bae0093c [SCSI] sd: implem... |
1189 |
* sdp->changed is set under the following conditions: |
3ff5588d3 [SCSI] sd: improv... |
1190 |
* |
2bae0093c [SCSI] sd: implem... |
1191 1192 |
* Medium present state has changed in either direction. * Device has indicated UNIT_ATTENTION. |
3ff5588d3 [SCSI] sd: improv... |
1193 |
*/ |
001aac257 [SCSI] sd,sr: add... |
1194 |
kfree(sshdr); |
2bae0093c [SCSI] sd: implem... |
1195 1196 |
retval = sdp->changed ? DISK_EVENT_MEDIA_CHANGE : 0; sdp->changed = 0; |
1da177e4c Linux-2.6.12-rc2 |
1197 |
return retval; |
1da177e4c Linux-2.6.12-rc2 |
1198 |
} |
e73aec824 [SCSI] sd: make p... |
1199 |
static int sd_sync_cache(struct scsi_disk *sdkp) |
1da177e4c Linux-2.6.12-rc2 |
1200 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1201 |
int retries, res; |
e73aec824 [SCSI] sd: make p... |
1202 |
struct scsi_device *sdp = sdkp->device; |
ea73a9f23 [SCSI] convert sd... |
1203 |
struct scsi_sense_hdr sshdr; |
1da177e4c Linux-2.6.12-rc2 |
1204 1205 1206 |
if (!scsi_device_online(sdp)) return -ENODEV; |
1da177e4c Linux-2.6.12-rc2 |
1207 |
|
1da177e4c Linux-2.6.12-rc2 |
1208 1209 1210 1211 1212 1213 1214 1215 |
for (retries = 3; retries > 0; --retries) { unsigned char cmd[10] = { 0 }; cmd[0] = SYNCHRONIZE_CACHE; /* * Leave the rest of the command zero to indicate * flush everything. */ |
ea73a9f23 [SCSI] convert sd... |
1216 |
res = scsi_execute_req(sdp, cmd, DMA_NONE, NULL, 0, &sshdr, |
e3b3e6246 [SCSI] scsi/block... |
1217 |
SD_FLUSH_TIMEOUT, SD_MAX_RETRIES, NULL); |
ea73a9f23 [SCSI] convert sd... |
1218 |
if (res == 0) |
1da177e4c Linux-2.6.12-rc2 |
1219 1220 |
break; } |
e73aec824 [SCSI] sd: make p... |
1221 1222 1223 1224 |
if (res) { sd_print_result(sdkp, res); if (driver_byte(res) & DRIVER_SENSE) sd_print_sense_hdr(sdkp, &sshdr); |
1da177e4c Linux-2.6.12-rc2 |
1225 |
} |
3721050af [SCSI] sd: fix re... |
1226 1227 1228 |
if (res) return -EIO; return 0; |
1da177e4c Linux-2.6.12-rc2 |
1229 |
} |
1da177e4c Linux-2.6.12-rc2 |
1230 1231 |
static void sd_rescan(struct device *dev) { |
39b7f1e25 [SCSI] sd: Fix re... |
1232 1233 1234 |
struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev); if (sdkp) { |
f98a8cae1 SCSI sd driver ca... |
1235 |
revalidate_disk(sdkp->disk); |
39b7f1e25 [SCSI] sd: Fix re... |
1236 1237 |
scsi_disk_put(sdkp); } |
1da177e4c Linux-2.6.12-rc2 |
1238 1239 1240 1241 1242 1243 1244 1245 |
} #ifdef CONFIG_COMPAT /* * This gets directly called from VFS. When the ioctl * is not recognized we go back to the other translation paths. */ |
0338e2917 [PATCH] switch sd |
1246 1247 |
static int sd_compat_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg) |
1da177e4c Linux-2.6.12-rc2 |
1248 |
{ |
0338e2917 [PATCH] switch sd |
1249 |
struct scsi_device *sdev = scsi_disk(bdev->bd_disk)->device; |
0bfc96cb7 block: fail SCSI ... |
1250 1251 1252 1253 1254 |
int ret; ret = scsi_verify_blk_ioctl(bdev, cmd); if (ret < 0) return ret; |
1da177e4c Linux-2.6.12-rc2 |
1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 |
/* * If we are in the middle of error recovery, don't let anyone * else try and use this device. Also, if error recovery fails, it * may try and take the device offline, in which case all further * access to the device is prohibited. */ if (!scsi_block_when_processing_errors(sdev)) return -ENODEV; if (sdev->host->hostt->compat_ioctl) { |
1da177e4c Linux-2.6.12-rc2 |
1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 |
ret = sdev->host->hostt->compat_ioctl(sdev, cmd, (void __user *)arg); return ret; } /* * Let the static ioctl translation table take care of it. */ return -ENOIOCTLCMD; } #endif |
83d5cde47 const: make block... |
1277 |
static const struct block_device_operations sd_fops = { |
1da177e4c Linux-2.6.12-rc2 |
1278 |
.owner = THIS_MODULE, |
0338e2917 [PATCH] switch sd |
1279 1280 |
.open = sd_open, .release = sd_release, |
8a6cfeb6d block: push down ... |
1281 |
.ioctl = sd_ioctl, |
a885c8c43 [PATCH] Add block... |
1282 |
.getgeo = sd_getgeo, |
1da177e4c Linux-2.6.12-rc2 |
1283 |
#ifdef CONFIG_COMPAT |
0338e2917 [PATCH] switch sd |
1284 |
.compat_ioctl = sd_compat_ioctl, |
1da177e4c Linux-2.6.12-rc2 |
1285 |
#endif |
2bae0093c [SCSI] sd: implem... |
1286 |
.check_events = sd_check_events, |
1da177e4c Linux-2.6.12-rc2 |
1287 |
.revalidate_disk = sd_revalidate_disk, |
72ec24bd7 SCSI: implement s... |
1288 |
.unlock_native_capacity = sd_unlock_native_capacity, |
1da177e4c Linux-2.6.12-rc2 |
1289 |
}; |
af55ff675 [SCSI] sd: Suppor... |
1290 1291 |
static unsigned int sd_completed_bytes(struct scsi_cmnd *scmd) { |
83096ebf1 block: convert to... |
1292 1293 |
u64 start_lba = blk_rq_pos(scmd->request); u64 end_lba = blk_rq_pos(scmd->request) + (scsi_bufflen(scmd) / 512); |
af55ff675 [SCSI] sd: Suppor... |
1294 1295 |
u64 bad_lba; int info_valid; |
a8733c7ba [SCSI] fix medium... |
1296 1297 1298 1299 1300 1301 |
/* * resid is optional but mostly filled in. When it's unused, * its value is zero, so we assume the whole buffer transferred */ unsigned int transferred = scsi_bufflen(scmd) - scsi_get_resid(scmd); unsigned int good_bytes; |
af55ff675 [SCSI] sd: Suppor... |
1302 |
|
33659ebba block: remove wra... |
1303 |
if (scmd->request->cmd_type != REQ_TYPE_FS) |
af55ff675 [SCSI] sd: Suppor... |
1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 |
return 0; info_valid = scsi_get_sense_info_fld(scmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, &bad_lba); if (!info_valid) return 0; if (scsi_bufflen(scmd) <= scmd->device->sector_size) return 0; if (scmd->device->sector_size < 512) { /* only legitimate sector_size here is 256 */ start_lba <<= 1; end_lba <<= 1; } else { /* be careful ... don't want any overflows */ u64 factor = scmd->device->sector_size / 512; do_div(start_lba, factor); do_div(end_lba, factor); } /* The bad lba was reported incorrectly, we have no idea where * the error is. */ if (bad_lba < start_lba || bad_lba >= end_lba) return 0; /* This computation should always be done in terms of * the resolution of the device's medium. */ |
a8733c7ba [SCSI] fix medium... |
1335 1336 |
good_bytes = (bad_lba - start_lba) * scmd->device->sector_size; return min(good_bytes, transferred); |
af55ff675 [SCSI] sd: Suppor... |
1337 |
} |
1da177e4c Linux-2.6.12-rc2 |
1338 |
/** |
7b3d9545f Revert "scsi: rev... |
1339 |
* sd_done - bottom half handler: called when the lower level |
1da177e4c Linux-2.6.12-rc2 |
1340 1341 1342 1343 1344 |
* driver has completed (successfully or otherwise) a scsi command. * @SCpnt: mid-level's per command structure. * * Note: potentially run from within an ISR. Must not block. **/ |
7b3d9545f Revert "scsi: rev... |
1345 |
static int sd_done(struct scsi_cmnd *SCpnt) |
1da177e4c Linux-2.6.12-rc2 |
1346 1347 |
{ int result = SCpnt->result; |
af55ff675 [SCSI] sd: Suppor... |
1348 |
unsigned int good_bytes = result ? 0 : scsi_bufflen(SCpnt); |
1da177e4c Linux-2.6.12-rc2 |
1349 |
struct scsi_sense_hdr sshdr; |
4e7392ec5 [SCSI] sd: Suppor... |
1350 |
struct scsi_disk *sdkp = scsi_disk(SCpnt->request->rq_disk); |
1da177e4c Linux-2.6.12-rc2 |
1351 1352 |
int sense_valid = 0; int sense_deferred = 0; |
c98a0eb0e [SCSI] sd: Logica... |
1353 |
unsigned char op = SCpnt->cmnd[0]; |
1da177e4c Linux-2.6.12-rc2 |
1354 |
|
c98a0eb0e [SCSI] sd: Logica... |
1355 1356 |
if ((SCpnt->request->cmd_flags & REQ_DISCARD) && !result) scsi_set_resid(SCpnt, 0); |
6a32a8aed scsi: convert dis... |
1357 |
|
1da177e4c Linux-2.6.12-rc2 |
1358 1359 1360 1361 1362 |
if (result) { sense_valid = scsi_command_normalize_sense(SCpnt, &sshdr); if (sense_valid) sense_deferred = scsi_sense_is_deferred(&sshdr); } |
1da177e4c Linux-2.6.12-rc2 |
1363 |
#ifdef CONFIG_SCSI_LOGGING |
fa0d34be0 [SCSI] sd: conver... |
1364 |
SCSI_LOG_HLCOMPLETE(1, scsi_print_result(SCpnt)); |
1da177e4c Linux-2.6.12-rc2 |
1365 |
if (sense_valid) { |
fa0d34be0 [SCSI] sd: conver... |
1366 |
SCSI_LOG_HLCOMPLETE(1, scmd_printk(KERN_INFO, SCpnt, |
7b3d9545f Revert "scsi: rev... |
1367 |
"sd_done: sb[respc,sk,asc," |
fa0d34be0 [SCSI] sd: conver... |
1368 1369 1370 1371 1372 |
"ascq]=%x,%x,%x,%x ", sshdr.response_code, sshdr.sense_key, sshdr.asc, sshdr.ascq)); |
1da177e4c Linux-2.6.12-rc2 |
1373 1374 |
} #endif |
03aba2f79 [SCSI] sd/scsi_li... |
1375 1376 1377 1378 1379 1380 1381 |
if (driver_byte(result) != DRIVER_SENSE && (!sense_valid || sense_deferred)) goto out; switch (sshdr.sense_key) { case HARDWARE_ERROR: case MEDIUM_ERROR: |
af55ff675 [SCSI] sd: Suppor... |
1382 |
good_bytes = sd_completed_bytes(SCpnt); |
03aba2f79 [SCSI] sd/scsi_li... |
1383 1384 |
break; case RECOVERED_ERROR: |
af55ff675 [SCSI] sd: Suppor... |
1385 1386 |
good_bytes = scsi_bufflen(SCpnt); break; |
10dab2266 [SCSI] sd: Fix ha... |
1387 1388 1389 1390 1391 1392 1393 1394 1395 |
case NO_SENSE: /* This indicates a false check condition, so ignore it. An * unknown amount of data was transferred so treat it as an * error. */ scsi_print_sense("sd", SCpnt); SCpnt->result = 0; memset(SCpnt->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); break; |
c98a0eb0e [SCSI] sd: Logica... |
1396 1397 1398 1399 1400 1401 |
case ABORTED_COMMAND: if (sshdr.asc == 0x10) /* DIF: Target detected corruption */ good_bytes = sd_completed_bytes(SCpnt); break; case ILLEGAL_REQUEST: if (sshdr.asc == 0x10) /* DIX: Host detected corruption */ |
af55ff675 [SCSI] sd: Suppor... |
1402 |
good_bytes = sd_completed_bytes(SCpnt); |
c98a0eb0e [SCSI] sd: Logica... |
1403 1404 1405 1406 |
/* INVALID COMMAND OPCODE or INVALID FIELD IN CDB */ if ((sshdr.asc == 0x20 || sshdr.asc == 0x24) && (op == UNMAP || op == WRITE_SAME_16 || op == WRITE_SAME)) sd_config_discard(sdkp, SD_LBP_DISABLE); |
03aba2f79 [SCSI] sd/scsi_li... |
1407 1408 1409 |
break; default: break; |
1da177e4c Linux-2.6.12-rc2 |
1410 |
} |
03aba2f79 [SCSI] sd/scsi_li... |
1411 |
out: |
af55ff675 [SCSI] sd: Suppor... |
1412 1413 |
if (rq_data_dir(SCpnt->request) == READ && scsi_prot_sg_count(SCpnt)) sd_dif_complete(SCpnt, good_bytes); |
4e7392ec5 [SCSI] sd: Suppor... |
1414 |
if (scsi_host_dif_capable(sdkp->device->host, sdkp->protection_type) |
77c9cfc51 [SCSI] Fix printi... |
1415 1416 1417 1418 1419 1420 1421 1422 |
== SD_DIF_TYPE2_PROTECTION && SCpnt->cmnd != SCpnt->request->cmd) { /* We have to print a failed command here as the * extended CDB gets freed before scsi_io_completion() * is called. */ if (result) scsi_print_command(SCpnt); |
4e7392ec5 [SCSI] sd: Suppor... |
1423 |
mempool_free(SCpnt->cmnd, sd_cdb_pool); |
77c9cfc51 [SCSI] Fix printi... |
1424 1425 1426 |
SCpnt->cmnd = NULL; SCpnt->cmd_len = 0; } |
4e7392ec5 [SCSI] sd: Suppor... |
1427 |
|
7b3d9545f Revert "scsi: rev... |
1428 |
return good_bytes; |
1da177e4c Linux-2.6.12-rc2 |
1429 |
} |
1da177e4c Linux-2.6.12-rc2 |
1430 1431 1432 1433 |
/* * spinup disk - called only in sd_revalidate_disk() */ static void |
e73aec824 [SCSI] sd: make p... |
1434 |
sd_spinup_disk(struct scsi_disk *sdkp) |
ea73a9f23 [SCSI] convert sd... |
1435 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1436 |
unsigned char cmd[10]; |
4451e4726 [SCSI] sd: pause ... |
1437 |
unsigned long spintime_expire = 0; |
1da177e4c Linux-2.6.12-rc2 |
1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 |
int retries, spintime; unsigned int the_result; struct scsi_sense_hdr sshdr; int sense_valid = 0; spintime = 0; /* Spin up drives, as required. Only do this at boot time */ /* Spinup needs to be done for module loads too. */ do { retries = 0; do { cmd[0] = TEST_UNIT_READY; memset((void *) &cmd[1], 0, 9); |
ea73a9f23 [SCSI] convert sd... |
1453 1454 1455 |
the_result = scsi_execute_req(sdkp->device, cmd, DMA_NONE, NULL, 0, &sshdr, SD_TIMEOUT, |
f4f4e47e4 [SCSI] add residu... |
1456 |
SD_MAX_RETRIES, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1457 |
|
b4d38e38e [SCSI] Reduce pol... |
1458 1459 1460 1461 1462 1463 1464 |
/* * If the drive has indicated to us that it * doesn't have any media in it, don't bother * with any more polling. */ if (media_not_present(sdkp, &sshdr)) return; |
1da177e4c Linux-2.6.12-rc2 |
1465 |
if (the_result) |
ea73a9f23 [SCSI] convert sd... |
1466 |
sense_valid = scsi_sense_valid(&sshdr); |
1da177e4c Linux-2.6.12-rc2 |
1467 1468 1469 1470 1471 |
retries++; } while (retries < 3 && (!scsi_status_is_good(the_result) || ((driver_byte(the_result) & DRIVER_SENSE) && sense_valid && sshdr.sense_key == UNIT_ATTENTION))); |
1da177e4c Linux-2.6.12-rc2 |
1472 1473 1474 |
if ((driver_byte(the_result) & DRIVER_SENSE) == 0) { /* no sense, TUR either succeeded or failed * with a status error */ |
e73aec824 [SCSI] sd: make p... |
1475 1476 1477 1478 1479 |
if(!spintime && !scsi_status_is_good(the_result)) { sd_printk(KERN_NOTICE, sdkp, "Unit Not Ready "); sd_print_result(sdkp, the_result); } |
1da177e4c Linux-2.6.12-rc2 |
1480 1481 1482 1483 1484 1485 |
break; } /* * The device does not want the automatic start to be issued. */ |
33dd6f92a [SCSI] sd: Don't ... |
1486 |
if (sdkp->device->no_start_on_add) |
1da177e4c Linux-2.6.12-rc2 |
1487 |
break; |
1da177e4c Linux-2.6.12-rc2 |
1488 |
|
33dd6f92a [SCSI] sd: Don't ... |
1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 |
if (sense_valid && sshdr.sense_key == NOT_READY) { if (sshdr.asc == 4 && sshdr.ascq == 3) break; /* manual intervention required */ if (sshdr.asc == 4 && sshdr.ascq == 0xb) break; /* standby */ if (sshdr.asc == 4 && sshdr.ascq == 0xc) break; /* unavailable */ /* * Issue command to spin up drive when not ready */ |
1da177e4c Linux-2.6.12-rc2 |
1499 |
if (!spintime) { |
e73aec824 [SCSI] sd: make p... |
1500 |
sd_printk(KERN_NOTICE, sdkp, "Spinning up disk..."); |
1da177e4c Linux-2.6.12-rc2 |
1501 1502 1503 1504 |
cmd[0] = START_STOP; cmd[1] = 1; /* Return immediately */ memset((void *) &cmd[2], 0, 8); cmd[4] = 1; /* Start spin cycle */ |
d2886ea36 scsi: sd: optiona... |
1505 1506 |
if (sdkp->device->start_stop_pwr_cond) cmd[4] |= 1 << 4; |
ea73a9f23 [SCSI] convert sd... |
1507 1508 |
scsi_execute_req(sdkp->device, cmd, DMA_NONE, NULL, 0, &sshdr, |
f4f4e47e4 [SCSI] add residu... |
1509 1510 |
SD_TIMEOUT, SD_MAX_RETRIES, NULL); |
4451e4726 [SCSI] sd: pause ... |
1511 1512 |
spintime_expire = jiffies + 100 * HZ; spintime = 1; |
1da177e4c Linux-2.6.12-rc2 |
1513 |
} |
1da177e4c Linux-2.6.12-rc2 |
1514 1515 1516 |
/* Wait 1 second for next try */ msleep(1000); printk("."); |
4451e4726 [SCSI] sd: pause ... |
1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 |
/* * Wait for USB flash devices with slow firmware. * Yes, this sense key/ASC combination shouldn't * occur here. It's characteristic of these devices. */ } else if (sense_valid && sshdr.sense_key == UNIT_ATTENTION && sshdr.asc == 0x28) { if (!spintime) { spintime_expire = jiffies + 5 * HZ; spintime = 1; } /* Wait 1 second for next try */ msleep(1000); |
1da177e4c Linux-2.6.12-rc2 |
1532 1533 1534 1535 |
} else { /* we don't understand the sense code, so it's * probably pointless to loop */ if(!spintime) { |
e73aec824 [SCSI] sd: make p... |
1536 1537 1538 |
sd_printk(KERN_NOTICE, sdkp, "Unit Not Ready "); sd_print_sense_hdr(sdkp, &sshdr); |
1da177e4c Linux-2.6.12-rc2 |
1539 1540 1541 1542 |
} break; } |
4451e4726 [SCSI] sd: pause ... |
1543 |
} while (spintime && time_before_eq(jiffies, spintime_expire)); |
1da177e4c Linux-2.6.12-rc2 |
1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 |
if (spintime) { if (scsi_status_is_good(the_result)) printk("ready "); else printk("not responding... "); } } |
e0597d700 [SCSI] sd: Identi... |
1554 1555 1556 1557 |
/* * Determine whether disk supports Data Integrity Field. */ |
439d77f70 scsi/sd.c: quiet ... |
1558 |
static void sd_read_protection_type(struct scsi_disk *sdkp, unsigned char *buffer) |
e0597d700 [SCSI] sd: Identi... |
1559 1560 1561 1562 1563 |
{ struct scsi_device *sdp = sdkp->device; u8 type; if (scsi_device_protection(sdp) == 0 || (buffer[12] & 1) == 0) |
35e1a5d90 [SCSI] sd: Detach... |
1564 1565 1566 1567 1568 1569 |
return; type = ((buffer[12] >> 1) & 7) + 1; /* P_TYPE 0 = Type 1 */ if (type == sdkp->protection_type || !sdkp->first_scan) return; |
e0597d700 [SCSI] sd: Identi... |
1570 |
|
be922f478 [SCSI] sd: Always... |
1571 |
sdkp->protection_type = type; |
4e7392ec5 [SCSI] sd: Suppor... |
1572 |
if (type > SD_DIF_TYPE3_PROTECTION) { |
35e1a5d90 [SCSI] sd: Detach... |
1573 1574 1575 1576 1577 |
sd_printk(KERN_ERR, sdkp, "formatted with unsupported " \ "protection type %u. Disabling disk! ", type); sdkp->capacity = 0; return; |
e0597d700 [SCSI] sd: Identi... |
1578 |
} |
35e1a5d90 [SCSI] sd: Detach... |
1579 1580 1581 1582 1583 1584 1585 1586 |
if (scsi_host_dif_capable(sdp->host, type)) sd_printk(KERN_NOTICE, sdkp, "Enabling DIF Type %u protection ", type); else sd_printk(KERN_NOTICE, sdkp, "Disabling DIF Type %u protection ", type); |
e0597d700 [SCSI] sd: Identi... |
1587 |
} |
0da205e01 [SCSI] sd: Refact... |
1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 |
static void read_capacity_error(struct scsi_disk *sdkp, struct scsi_device *sdp, struct scsi_sense_hdr *sshdr, int sense_valid, int the_result) { sd_print_result(sdkp, the_result); if (driver_byte(the_result) & DRIVER_SENSE) sd_print_sense_hdr(sdkp, sshdr); else sd_printk(KERN_NOTICE, sdkp, "Sense not available. "); /* * Set dirty bit for removable devices if not ready - * sometimes drives will not report this properly. */ if (sdp->removable && sense_valid && sshdr->sense_key == NOT_READY) |
2bae0093c [SCSI] sd: implem... |
1605 |
set_media_not_present(sdkp); |
0da205e01 [SCSI] sd: Refact... |
1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 |
/* * We used to set media_present to 0 here to indicate no media * in the drive, but some drives fail read capacity even with * media present, so we can't do that. */ sdkp->capacity = 0; /* unknown mapped to zero - as usual */ } #define RC16_LEN 32 #if RC16_LEN > SD_BUF_SIZE #error RC16_LEN must not be more than SD_BUF_SIZE #endif |
3233ac198 [SCSI] sd: retry ... |
1619 |
#define READ_CAPACITY_RETRIES_ON_RESET 10 |
0da205e01 [SCSI] sd: Refact... |
1620 1621 |
static int read_capacity_16(struct scsi_disk *sdkp, struct scsi_device *sdp, unsigned char *buffer) |
ea73a9f23 [SCSI] convert sd... |
1622 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1623 |
unsigned char cmd[16]; |
1da177e4c Linux-2.6.12-rc2 |
1624 1625 |
struct scsi_sense_hdr sshdr; int sense_valid = 0; |
0da205e01 [SCSI] sd: Refact... |
1626 |
int the_result; |
3233ac198 [SCSI] sd: retry ... |
1627 |
int retries = 3, reset_retries = READ_CAPACITY_RETRIES_ON_RESET; |
ea09bcc9c sd: Physical bloc... |
1628 |
unsigned int alignment; |
0da205e01 [SCSI] sd: Refact... |
1629 1630 |
unsigned long long lba; unsigned sector_size; |
1da177e4c Linux-2.6.12-rc2 |
1631 |
|
5ce524bdf scsi/sd: add a no... |
1632 1633 |
if (sdp->no_read_capacity_16) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1634 |
do { |
0da205e01 [SCSI] sd: Refact... |
1635 1636 1637 1638 1639 |
memset(cmd, 0, 16); cmd[0] = SERVICE_ACTION_IN; cmd[1] = SAI_READ_CAPACITY_16; cmd[13] = RC16_LEN; memset(buffer, 0, RC16_LEN); |
ea73a9f23 [SCSI] convert sd... |
1640 |
the_result = scsi_execute_req(sdp, cmd, DMA_FROM_DEVICE, |
0da205e01 [SCSI] sd: Refact... |
1641 1642 |
buffer, RC16_LEN, &sshdr, SD_TIMEOUT, SD_MAX_RETRIES, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1643 |
|
ea73a9f23 [SCSI] convert sd... |
1644 |
if (media_not_present(sdkp, &sshdr)) |
0da205e01 [SCSI] sd: Refact... |
1645 |
return -ENODEV; |
1da177e4c Linux-2.6.12-rc2 |
1646 |
|
2b301307f [SCSI] sd: Try RE... |
1647 |
if (the_result) { |
ea73a9f23 [SCSI] convert sd... |
1648 |
sense_valid = scsi_sense_valid(&sshdr); |
2b301307f [SCSI] sd: Try RE... |
1649 1650 1651 1652 1653 1654 1655 1656 |
if (sense_valid && sshdr.sense_key == ILLEGAL_REQUEST && (sshdr.asc == 0x20 || sshdr.asc == 0x24) && sshdr.ascq == 0x00) /* Invalid Command Operation Code or * Invalid Field in CDB, just retry * silently with RC10 */ return -EINVAL; |
3233ac198 [SCSI] sd: retry ... |
1657 1658 1659 1660 1661 1662 1663 |
if (sense_valid && sshdr.sense_key == UNIT_ATTENTION && sshdr.asc == 0x29 && sshdr.ascq == 0x00) /* Device reset might occur several times, * give it one more chance */ if (--reset_retries > 0) continue; |
2b301307f [SCSI] sd: Try RE... |
1664 |
} |
1da177e4c Linux-2.6.12-rc2 |
1665 1666 1667 |
retries--; } while (the_result && retries); |
0da205e01 [SCSI] sd: Refact... |
1668 |
if (the_result) { |
e73aec824 [SCSI] sd: make p... |
1669 1670 |
sd_printk(KERN_NOTICE, sdkp, "READ CAPACITY(16) failed "); |
0da205e01 [SCSI] sd: Refact... |
1671 1672 1673 |
read_capacity_error(sdkp, sdp, &sshdr, sense_valid, the_result); return -EINVAL; } |
e73aec824 [SCSI] sd: make p... |
1674 |
|
8f76d151b [SCSI] fix sign e... |
1675 1676 |
sector_size = get_unaligned_be32(&buffer[8]); lba = get_unaligned_be64(&buffer[0]); |
0da205e01 [SCSI] sd: Refact... |
1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 |
sd_read_protection_type(sdkp, buffer); if ((sizeof(sdkp->capacity) == 4) && (lba >= 0xffffffffULL)) { sd_printk(KERN_ERR, sdkp, "Too big for this kernel. Use a " "kernel compiled with support for large block " "devices. "); sdkp->capacity = 0; return -EOVERFLOW; } |
ea09bcc9c sd: Physical bloc... |
1688 |
/* Logical blocks per physical block exponent */ |
526f7c795 [SCSI] sd: Fix ov... |
1689 |
sdkp->physical_block_size = (1 << (buffer[13] & 0xf)) * sector_size; |
ea09bcc9c sd: Physical bloc... |
1690 1691 1692 1693 1694 1695 1696 1697 |
/* Lowest aligned logical block */ alignment = ((buffer[14] & 0x3f) << 8 | buffer[15]) * sector_size; blk_queue_alignment_offset(sdp->request_queue, alignment); if (alignment && sdkp->first_scan) sd_printk(KERN_NOTICE, sdkp, "physical block alignment offset: %u ", alignment); |
c98a0eb0e [SCSI] sd: Logica... |
1698 1699 |
if (buffer[14] & 0x80) { /* LBPME */ sdkp->lbpme = 1; |
e339c1a7c [SCSI] sd: WRITE ... |
1700 |
|
c98a0eb0e [SCSI] sd: Logica... |
1701 1702 |
if (buffer[14] & 0x40) /* LBPRZ */ sdkp->lbprz = 1; |
e339c1a7c [SCSI] sd: WRITE ... |
1703 |
|
c98a0eb0e [SCSI] sd: Logica... |
1704 |
sd_config_discard(sdkp, SD_LBP_WS16); |
e339c1a7c [SCSI] sd: WRITE ... |
1705 |
} |
0da205e01 [SCSI] sd: Refact... |
1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 |
sdkp->capacity = lba + 1; return sector_size; } static int read_capacity_10(struct scsi_disk *sdkp, struct scsi_device *sdp, unsigned char *buffer) { unsigned char cmd[16]; struct scsi_sense_hdr sshdr; int sense_valid = 0; int the_result; |
3233ac198 [SCSI] sd: retry ... |
1717 |
int retries = 3, reset_retries = READ_CAPACITY_RETRIES_ON_RESET; |
0da205e01 [SCSI] sd: Refact... |
1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 |
sector_t lba; unsigned sector_size; do { cmd[0] = READ_CAPACITY; memset(&cmd[1], 0, 9); memset(buffer, 0, 8); the_result = scsi_execute_req(sdp, cmd, DMA_FROM_DEVICE, buffer, 8, &sshdr, SD_TIMEOUT, SD_MAX_RETRIES, NULL); if (media_not_present(sdkp, &sshdr)) return -ENODEV; |
3233ac198 [SCSI] sd: retry ... |
1732 |
if (the_result) { |
0da205e01 [SCSI] sd: Refact... |
1733 |
sense_valid = scsi_sense_valid(&sshdr); |
3233ac198 [SCSI] sd: retry ... |
1734 1735 1736 1737 1738 1739 1740 1741 |
if (sense_valid && sshdr.sense_key == UNIT_ATTENTION && sshdr.asc == 0x29 && sshdr.ascq == 0x00) /* Device reset might occur several times, * give it one more chance */ if (--reset_retries > 0) continue; } |
0da205e01 [SCSI] sd: Refact... |
1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 |
retries--; } while (the_result && retries); if (the_result) { sd_printk(KERN_NOTICE, sdkp, "READ CAPACITY failed "); read_capacity_error(sdkp, sdp, &sshdr, sense_valid, the_result); return -EINVAL; } |
8f76d151b [SCSI] fix sign e... |
1752 1753 |
sector_size = get_unaligned_be32(&buffer[4]); lba = get_unaligned_be32(&buffer[0]); |
0da205e01 [SCSI] sd: Refact... |
1754 |
|
5ce524bdf scsi/sd: add a no... |
1755 1756 1757 1758 1759 |
if (sdp->no_read_capacity_16 && (lba == 0xffffffff)) { /* Some buggy (usb cardreader) devices return an lba of 0xffffffff when the want to report a size of 0 (with which they really mean no media is present) */ sdkp->capacity = 0; |
5cc103506 Merge git://git.k... |
1760 |
sdkp->physical_block_size = sector_size; |
5ce524bdf scsi/sd: add a no... |
1761 1762 |
return sector_size; } |
0da205e01 [SCSI] sd: Refact... |
1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 |
if ((sizeof(sdkp->capacity) == 4) && (lba == 0xffffffff)) { sd_printk(KERN_ERR, sdkp, "Too big for this kernel. Use a " "kernel compiled with support for large block " "devices. "); sdkp->capacity = 0; return -EOVERFLOW; } sdkp->capacity = lba + 1; |
526f7c795 [SCSI] sd: Fix ov... |
1773 |
sdkp->physical_block_size = sector_size; |
0da205e01 [SCSI] sd: Refact... |
1774 1775 |
return sector_size; } |
2b301307f [SCSI] sd: Try RE... |
1776 1777 |
static int sd_try_rc16_first(struct scsi_device *sdp) { |
f87146bba [SCSI] sd: quiet ... |
1778 1779 |
if (sdp->host->max_cmd_len < 16) return 0; |
2b301307f [SCSI] sd: Try RE... |
1780 1781 1782 1783 1784 1785 |
if (sdp->scsi_level > SCSI_SPC_2) return 1; if (scsi_device_protection(sdp)) return 1; return 0; } |
0da205e01 [SCSI] sd: Refact... |
1786 1787 1788 1789 1790 1791 1792 1793 |
/* * read disk capacity */ static void sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer) { int sector_size; struct scsi_device *sdp = sdkp->device; |
70a9b8734 [SCSI] sd: Make r... |
1794 |
sector_t old_capacity = sdkp->capacity; |
0da205e01 [SCSI] sd: Refact... |
1795 |
|
2b301307f [SCSI] sd: Try RE... |
1796 |
if (sd_try_rc16_first(sdp)) { |
0da205e01 [SCSI] sd: Refact... |
1797 1798 |
sector_size = read_capacity_16(sdkp, sdp, buffer); if (sector_size == -EOVERFLOW) |
1da177e4c Linux-2.6.12-rc2 |
1799 |
goto got_data; |
2b301307f [SCSI] sd: Try RE... |
1800 1801 1802 1803 |
if (sector_size == -ENODEV) return; if (sector_size < 0) sector_size = read_capacity_10(sdkp, sdp, buffer); |
0da205e01 [SCSI] sd: Refact... |
1804 1805 |
if (sector_size < 0) return; |
1da177e4c Linux-2.6.12-rc2 |
1806 |
} else { |
0da205e01 [SCSI] sd: Refact... |
1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 |
sector_size = read_capacity_10(sdkp, sdp, buffer); if (sector_size == -EOVERFLOW) goto got_data; if (sector_size < 0) return; if ((sizeof(sdkp->capacity) > 4) && (sdkp->capacity > 0xffffffffULL)) { int old_sector_size = sector_size; sd_printk(KERN_NOTICE, sdkp, "Very big device. " "Trying to use READ CAPACITY(16). "); sector_size = read_capacity_16(sdkp, sdp, buffer); if (sector_size < 0) { sd_printk(KERN_NOTICE, sdkp, "Using 0xffffffff as device size "); sdkp->capacity = 1 + (sector_t) 0xffffffff; sector_size = old_sector_size; goto got_data; } } } |
1da177e4c Linux-2.6.12-rc2 |
1829 |
|
5c211caa9 [SCSI] sd: tell t... |
1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 |
/* Some devices are known to return the total number of blocks, * not the highest block number. Some devices have versions * which do this and others which do not. Some devices we might * suspect of doing this but we don't know for certain. * * If we know the reported capacity is wrong, decrement it. If * we can only guess, then assume the number of blocks is even * (usually true but not always) and err on the side of lowering * the capacity. */ if (sdp->fix_capacity || (sdp->guess_capacity && (sdkp->capacity & 0x01))) { sd_printk(KERN_INFO, sdkp, "Adjusting the sector count " "from its reported value: %llu ", (unsigned long long) sdkp->capacity); |
1da177e4c Linux-2.6.12-rc2 |
1846 |
--sdkp->capacity; |
61bf54b71 USB Storage: indi... |
1847 |
} |
1da177e4c Linux-2.6.12-rc2 |
1848 1849 1850 |
got_data: if (sector_size == 0) { sector_size = 512; |
e73aec824 [SCSI] sd: make p... |
1851 1852 1853 |
sd_printk(KERN_NOTICE, sdkp, "Sector size 0 reported, " "assuming 512. "); |
1da177e4c Linux-2.6.12-rc2 |
1854 1855 1856 1857 1858 1859 1860 |
} if (sector_size != 512 && sector_size != 1024 && sector_size != 2048 && sector_size != 4096 && sector_size != 256) { |
e73aec824 [SCSI] sd: make p... |
1861 1862 1863 |
sd_printk(KERN_NOTICE, sdkp, "Unsupported sector size %d. ", sector_size); |
1da177e4c Linux-2.6.12-rc2 |
1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 |
/* * The user might want to re-format the drive with * a supported sectorsize. Once this happens, it * would be relatively trivial to set the thing up. * For this reason, we leave the thing in the table. */ sdkp->capacity = 0; /* * set a bogus sector size so the normal read/write * logic in the block layer will eventually refuse any * request on this device without tripping over power * of two sector size assumptions */ sector_size = 512; } |
e1defc4ff block: Do away wi... |
1879 |
blk_queue_logical_block_size(sdp->request_queue, sector_size); |
7404ad3b6 [SCSI] sd: use ge... |
1880 |
|
1da177e4c Linux-2.6.12-rc2 |
1881 |
{ |
7404ad3b6 [SCSI] sd: use ge... |
1882 |
char cap_str_2[10], cap_str_10[10]; |
520a2c274 [SCSI] sd: fix co... |
1883 |
u64 sz = (u64)sdkp->capacity << ilog2(sector_size); |
1da177e4c Linux-2.6.12-rc2 |
1884 |
|
7404ad3b6 [SCSI] sd: use ge... |
1885 1886 1887 1888 |
string_get_size(sz, STRING_UNITS_2, cap_str_2, sizeof(cap_str_2)); string_get_size(sz, STRING_UNITS_10, cap_str_10, sizeof(cap_str_10)); |
1da177e4c Linux-2.6.12-rc2 |
1889 |
|
ea09bcc9c sd: Physical bloc... |
1890 |
if (sdkp->first_scan || old_capacity != sdkp->capacity) { |
70a9b8734 [SCSI] sd: Make r... |
1891 |
sd_printk(KERN_NOTICE, sdkp, |
ea09bcc9c sd: Physical bloc... |
1892 1893 |
"%llu %d-byte logical blocks: (%s/%s) ", |
70a9b8734 [SCSI] sd: Make r... |
1894 1895 |
(unsigned long long)sdkp->capacity, sector_size, cap_str_10, cap_str_2); |
ea09bcc9c sd: Physical bloc... |
1896 |
|
526f7c795 [SCSI] sd: Fix ov... |
1897 |
if (sdkp->physical_block_size != sector_size) |
ea09bcc9c sd: Physical bloc... |
1898 1899 1900 |
sd_printk(KERN_NOTICE, sdkp, "%u-byte physical blocks ", |
526f7c795 [SCSI] sd: Fix ov... |
1901 |
sdkp->physical_block_size); |
ea09bcc9c sd: Physical bloc... |
1902 |
} |
1da177e4c Linux-2.6.12-rc2 |
1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 |
} /* 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; else if (sector_size == 256) sdkp->capacity >>= 1; |
526f7c795 [SCSI] sd: Fix ov... |
1914 1915 |
blk_queue_physical_block_size(sdp->request_queue, sdkp->physical_block_size); |
1da177e4c Linux-2.6.12-rc2 |
1916 1917 1918 1919 1920 |
sdkp->device->sector_size = sector_size; } /* called with buffer of length 512 */ static inline int |
ea73a9f23 [SCSI] convert sd... |
1921 1922 1923 |
sd_do_mode_sense(struct scsi_device *sdp, int dbd, int modepage, unsigned char *buffer, int len, struct scsi_mode_data *data, struct scsi_sense_hdr *sshdr) |
1da177e4c Linux-2.6.12-rc2 |
1924 |
{ |
ea73a9f23 [SCSI] convert sd... |
1925 |
return scsi_mode_sense(sdp, dbd, modepage, buffer, len, |
1cf72699c [SCSI] convert th... |
1926 |
SD_TIMEOUT, SD_MAX_RETRIES, data, |
ea73a9f23 [SCSI] convert sd... |
1927 |
sshdr); |
1da177e4c Linux-2.6.12-rc2 |
1928 1929 1930 1931 |
} /* * read write protect setting, if possible - called only in sd_revalidate_disk() |
489708007 [PATCH] sd: fix m... |
1932 |
* called with buffer of length SD_BUF_SIZE |
1da177e4c Linux-2.6.12-rc2 |
1933 1934 |
*/ static void |
e73aec824 [SCSI] sd: make p... |
1935 |
sd_read_write_protect_flag(struct scsi_disk *sdkp, unsigned char *buffer) |
ea73a9f23 [SCSI] convert sd... |
1936 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1937 |
int res; |
ea73a9f23 [SCSI] convert sd... |
1938 |
struct scsi_device *sdp = sdkp->device; |
1da177e4c Linux-2.6.12-rc2 |
1939 |
struct scsi_mode_data data; |
70a9b8734 [SCSI] sd: Make r... |
1940 |
int old_wp = sdkp->write_prot; |
1da177e4c Linux-2.6.12-rc2 |
1941 1942 |
set_disk_ro(sdkp->disk, 0); |
ea73a9f23 [SCSI] convert sd... |
1943 |
if (sdp->skip_ms_page_3f) { |
e73aec824 [SCSI] sd: make p... |
1944 1945 |
sd_printk(KERN_NOTICE, sdkp, "Assuming Write Enabled "); |
1da177e4c Linux-2.6.12-rc2 |
1946 1947 |
return; } |
ea73a9f23 [SCSI] convert sd... |
1948 1949 |
if (sdp->use_192_bytes_for_3f) { res = sd_do_mode_sense(sdp, 0, 0x3F, buffer, 192, &data, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1950 1951 1952 1953 1954 1955 |
} else { /* * First attempt: ask for all pages (0x3F), but only 4 bytes. * We have to start carefully: some devices hang if we ask * for more than is available. */ |
ea73a9f23 [SCSI] convert sd... |
1956 |
res = sd_do_mode_sense(sdp, 0, 0x3F, buffer, 4, &data, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1957 1958 1959 1960 1961 1962 1963 1964 |
/* * Second attempt: ask for page 0 When only page 0 is * implemented, a request for page 3F may return Sense Key * 5: Illegal Request, Sense Code 24: Invalid field in * CDB. */ if (!scsi_status_is_good(res)) |
ea73a9f23 [SCSI] convert sd... |
1965 |
res = sd_do_mode_sense(sdp, 0, 0, buffer, 4, &data, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1966 1967 1968 1969 1970 |
/* * Third attempt: ask 255 bytes, as we did earlier. */ if (!scsi_status_is_good(res)) |
ea73a9f23 [SCSI] convert sd... |
1971 1972 |
res = sd_do_mode_sense(sdp, 0, 0x3F, buffer, 255, &data, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1973 1974 1975 |
} if (!scsi_status_is_good(res)) { |
e73aec824 [SCSI] sd: make p... |
1976 1977 1978 |
sd_printk(KERN_WARNING, sdkp, "Test WP failed, assume Write Enabled "); |
1da177e4c Linux-2.6.12-rc2 |
1979 1980 1981 |
} else { sdkp->write_prot = ((data.device_specific & 0x80) != 0); set_disk_ro(sdkp->disk, sdkp->write_prot); |
70a9b8734 [SCSI] sd: Make r... |
1982 1983 1984 1985 1986 1987 1988 1989 1990 |
if (sdkp->first_scan || old_wp != sdkp->write_prot) { sd_printk(KERN_NOTICE, sdkp, "Write Protect is %s ", sdkp->write_prot ? "on" : "off"); sd_printk(KERN_DEBUG, sdkp, "Mode Sense: %02x %02x %02x %02x ", buffer[0], buffer[1], buffer[2], buffer[3]); } |
1da177e4c Linux-2.6.12-rc2 |
1991 1992 1993 1994 1995 |
} } /* * sd_read_cache_type - called only from sd_revalidate_disk() |
489708007 [PATCH] sd: fix m... |
1996 |
* called with buffer of length SD_BUF_SIZE |
1da177e4c Linux-2.6.12-rc2 |
1997 1998 |
*/ static void |
e73aec824 [SCSI] sd: make p... |
1999 |
sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer) |
631e8a139 [SCSI] TYPE_RBC c... |
2000 |
{ |
1da177e4c Linux-2.6.12-rc2 |
2001 |
int len = 0, res; |
ea73a9f23 [SCSI] convert sd... |
2002 |
struct scsi_device *sdp = sdkp->device; |
1da177e4c Linux-2.6.12-rc2 |
2003 |
|
631e8a139 [SCSI] TYPE_RBC c... |
2004 2005 |
int dbd; int modepage; |
0bcaa1115 [SCSI] Retrieve t... |
2006 |
int first_len; |
1da177e4c Linux-2.6.12-rc2 |
2007 2008 |
struct scsi_mode_data data; struct scsi_sense_hdr sshdr; |
70a9b8734 [SCSI] sd: Make r... |
2009 2010 2011 |
int old_wce = sdkp->WCE; int old_rcd = sdkp->RCD; int old_dpofua = sdkp->DPOFUA; |
1da177e4c Linux-2.6.12-rc2 |
2012 |
|
0bcaa1115 [SCSI] Retrieve t... |
2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 |
first_len = 4; if (sdp->skip_ms_page_8) { if (sdp->type == TYPE_RBC) goto defaults; else { if (sdp->skip_ms_page_3f) goto defaults; modepage = 0x3F; if (sdp->use_192_bytes_for_3f) first_len = 192; dbd = 0; } } else if (sdp->type == TYPE_RBC) { |
631e8a139 [SCSI] TYPE_RBC c... |
2026 2027 2028 2029 2030 2031 |
modepage = 6; dbd = 8; } else { modepage = 8; dbd = 0; } |
1da177e4c Linux-2.6.12-rc2 |
2032 |
/* cautiously ask */ |
0bcaa1115 [SCSI] Retrieve t... |
2033 2034 |
res = sd_do_mode_sense(sdp, dbd, modepage, buffer, first_len, &data, &sshdr); |
1da177e4c Linux-2.6.12-rc2 |
2035 2036 2037 |
if (!scsi_status_is_good(res)) goto bad_sense; |
6d73c8514 [SCSI] scsi_lib: ... |
2038 2039 |
if (!data.header_length) { modepage = 6; |
0bcaa1115 [SCSI] Retrieve t... |
2040 |
first_len = 0; |
e73aec824 [SCSI] sd: make p... |
2041 2042 |
sd_printk(KERN_ERR, sdkp, "Missing header in MODE_SENSE response "); |
6d73c8514 [SCSI] scsi_lib: ... |
2043 |
} |
1da177e4c Linux-2.6.12-rc2 |
2044 2045 2046 2047 2048 2049 2050 2051 2052 |
/* that went OK, now ask for the proper length */ len = data.length; /* * We're only interested in the first three bytes, actually. * But the data cache page is defined for the first 20. */ if (len < 3) goto bad_sense; |
0bcaa1115 [SCSI] Retrieve t... |
2053 2054 2055 2056 2057 2058 2059 2060 |
else if (len > SD_BUF_SIZE) { sd_printk(KERN_NOTICE, sdkp, "Truncating mode parameter " "data from %d to %d bytes ", len, SD_BUF_SIZE); len = SD_BUF_SIZE; } if (modepage == 0x3F && sdp->use_192_bytes_for_3f) len = 192; |
1da177e4c Linux-2.6.12-rc2 |
2061 2062 |
/* Get the data */ |
0bcaa1115 [SCSI] Retrieve t... |
2063 2064 2065 |
if (len > first_len) res = sd_do_mode_sense(sdp, dbd, modepage, buffer, len, &data, &sshdr); |
1da177e4c Linux-2.6.12-rc2 |
2066 2067 |
if (scsi_status_is_good(res)) { |
631e8a139 [SCSI] TYPE_RBC c... |
2068 |
int offset = data.header_length + data.block_descriptor_length; |
1da177e4c Linux-2.6.12-rc2 |
2069 |
|
0bcaa1115 [SCSI] Retrieve t... |
2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 |
while (offset < len) { u8 page_code = buffer[offset] & 0x3F; u8 spf = buffer[offset] & 0x40; if (page_code == 8 || page_code == 6) { /* We're interested only in the first 3 bytes. */ if (len - offset <= 2) { sd_printk(KERN_ERR, sdkp, "Incomplete " "mode parameter data "); goto defaults; } else { modepage = page_code; goto Page_found; } } else { /* Go to the next page */ if (spf && len - offset > 3) offset += 4 + (buffer[offset+2] << 8) + buffer[offset+3]; else if (!spf && len - offset > 1) offset += 2 + buffer[offset+1]; else { sd_printk(KERN_ERR, sdkp, "Incomplete " "mode parameter data "); goto defaults; } } |
489708007 [PATCH] sd: fix m... |
2100 |
} |
0bcaa1115 [SCSI] Retrieve t... |
2101 2102 2103 2104 2105 2106 |
if (modepage == 0x3F) { sd_printk(KERN_ERR, sdkp, "No Caching mode page " "present "); goto defaults; } else if ((buffer[offset] & 0x3f) != modepage) { |
e73aec824 [SCSI] sd: make p... |
2107 2108 |
sd_printk(KERN_ERR, sdkp, "Got wrong page "); |
631e8a139 [SCSI] TYPE_RBC c... |
2109 2110 |
goto defaults; } |
0bcaa1115 [SCSI] Retrieve t... |
2111 |
Page_found: |
631e8a139 [SCSI] TYPE_RBC c... |
2112 2113 2114 2115 2116 2117 2118 |
if (modepage == 8) { sdkp->WCE = ((buffer[offset + 2] & 0x04) != 0); sdkp->RCD = ((buffer[offset + 2] & 0x01) != 0); } else { sdkp->WCE = ((buffer[offset + 2] & 0x01) == 0); sdkp->RCD = 0; } |
1da177e4c Linux-2.6.12-rc2 |
2119 |
|
007365ad6 [BLOCK] scsi: add... |
2120 2121 |
sdkp->DPOFUA = (data.device_specific & 0x10) != 0; if (sdkp->DPOFUA && !sdkp->device->use_10_for_rw) { |
e73aec824 [SCSI] sd: make p... |
2122 2123 2124 |
sd_printk(KERN_NOTICE, sdkp, "Uses READ/WRITE(6), disabling FUA "); |
007365ad6 [BLOCK] scsi: add... |
2125 2126 |
sdkp->DPOFUA = 0; } |
70a9b8734 [SCSI] sd: Make r... |
2127 2128 2129 2130 2131 2132 2133 2134 2135 |
if (sdkp->first_scan || old_wce != sdkp->WCE || old_rcd != sdkp->RCD || old_dpofua != sdkp->DPOFUA) sd_printk(KERN_NOTICE, sdkp, "Write cache: %s, read cache: %s, %s ", sdkp->WCE ? "enabled" : "disabled", sdkp->RCD ? "disabled" : "enabled", sdkp->DPOFUA ? "supports DPO and FUA" : "doesn't support DPO or FUA"); |
1da177e4c Linux-2.6.12-rc2 |
2136 2137 2138 2139 2140 |
return; } bad_sense: |
ea73a9f23 [SCSI] convert sd... |
2141 |
if (scsi_sense_valid(&sshdr) && |
1da177e4c Linux-2.6.12-rc2 |
2142 2143 |
sshdr.sense_key == ILLEGAL_REQUEST && sshdr.asc == 0x24 && sshdr.ascq == 0x0) |
e73aec824 [SCSI] sd: make p... |
2144 2145 2146 |
/* Invalid field in CDB */ sd_printk(KERN_NOTICE, sdkp, "Cache data unavailable "); |
1da177e4c Linux-2.6.12-rc2 |
2147 |
else |
e73aec824 [SCSI] sd: make p... |
2148 2149 |
sd_printk(KERN_ERR, sdkp, "Asking for cache data failed "); |
1da177e4c Linux-2.6.12-rc2 |
2150 2151 |
defaults: |
e73aec824 [SCSI] sd: make p... |
2152 2153 |
sd_printk(KERN_ERR, sdkp, "Assuming drive cache: write through "); |
1da177e4c Linux-2.6.12-rc2 |
2154 2155 |
sdkp->WCE = 0; sdkp->RCD = 0; |
489708007 [PATCH] sd: fix m... |
2156 |
sdkp->DPOFUA = 0; |
1da177e4c Linux-2.6.12-rc2 |
2157 |
} |
e0597d700 [SCSI] sd: Identi... |
2158 2159 2160 2161 |
/* * The ATO bit indicates whether the DIF application tag is available * for use by the operating system. */ |
439d77f70 scsi/sd.c: quiet ... |
2162 |
static void sd_read_app_tag_own(struct scsi_disk *sdkp, unsigned char *buffer) |
e0597d700 [SCSI] sd: Identi... |
2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 |
{ int res, offset; struct scsi_device *sdp = sdkp->device; struct scsi_mode_data data; struct scsi_sense_hdr sshdr; if (sdp->type != TYPE_DISK) return; if (sdkp->protection_type == 0) return; res = scsi_mode_sense(sdp, 1, 0x0a, buffer, 36, SD_TIMEOUT, SD_MAX_RETRIES, &data, &sshdr); if (!scsi_status_is_good(res) || !data.header_length || data.length < 6) { sd_printk(KERN_WARNING, sdkp, "getting Control mode page failed, assume no ATO "); if (scsi_sense_valid(&sshdr)) sd_print_sense_hdr(sdkp, &sshdr); return; } offset = data.header_length + data.block_descriptor_length; if ((buffer[offset] & 0x3f) != 0x0a) { sd_printk(KERN_ERR, sdkp, "ATO Got wrong page "); return; } if ((buffer[offset + 5] & 0x80) == 0) return; sdkp->ATO = 1; return; } |
1da177e4c Linux-2.6.12-rc2 |
2205 |
/** |
d11b69169 sd: Block limits ... |
2206 2207 2208 2209 2210 2211 |
* sd_read_block_limits - Query disk device for preferred I/O sizes. * @disk: disk to query */ static void sd_read_block_limits(struct scsi_disk *sdkp) { unsigned int sector_sz = sdkp->device->sector_size; |
bb2d3de18 [SCSI] sd: Fix VP... |
2212 |
const int vpd_len = 64; |
e3deec090 [SCSI] eliminate ... |
2213 |
unsigned char *buffer = kmalloc(vpd_len, GFP_KERNEL); |
d11b69169 sd: Block limits ... |
2214 |
|
e3deec090 [SCSI] eliminate ... |
2215 2216 2217 2218 |
if (!buffer || /* Block Limits VPD */ scsi_get_vpd_page(sdkp->device, 0xb0, buffer, vpd_len)) goto out; |
d11b69169 sd: Block limits ... |
2219 2220 2221 2222 2223 |
blk_queue_io_min(sdkp->disk->queue, get_unaligned_be16(&buffer[6]) * sector_sz); blk_queue_io_opt(sdkp->disk->queue, get_unaligned_be32(&buffer[12]) * sector_sz); |
c98a0eb0e [SCSI] sd: Logica... |
2224 2225 |
if (buffer[3] == 0x3c) { unsigned int lba_count, desc_count; |
e339c1a7c [SCSI] sd: WRITE ... |
2226 |
|
c98a0eb0e [SCSI] sd: Logica... |
2227 2228 2229 |
sdkp->max_ws_blocks = (u32) min_not_zero(get_unaligned_be64(&buffer[36]), (u64)0xffffffff); |
e339c1a7c [SCSI] sd: WRITE ... |
2230 |
|
c98a0eb0e [SCSI] sd: Logica... |
2231 |
if (!sdkp->lbpme) |
045d3fe76 [SCSI] sd: Update... |
2232 |
goto out; |
045d3fe76 [SCSI] sd: Update... |
2233 |
|
c98a0eb0e [SCSI] sd: Logica... |
2234 2235 |
lba_count = get_unaligned_be32(&buffer[20]); desc_count = get_unaligned_be32(&buffer[24]); |
045d3fe76 [SCSI] sd: Update... |
2236 |
|
c98a0eb0e [SCSI] sd: Logica... |
2237 2238 |
if (lba_count && desc_count) sdkp->max_unmap_blocks = lba_count; |
e339c1a7c [SCSI] sd: WRITE ... |
2239 |
|
c98a0eb0e [SCSI] sd: Logica... |
2240 |
sdkp->unmap_granularity = get_unaligned_be32(&buffer[28]); |
e339c1a7c [SCSI] sd: WRITE ... |
2241 2242 |
if (buffer[32] & 0x80) |
c98a0eb0e [SCSI] sd: Logica... |
2243 |
sdkp->unmap_alignment = |
e339c1a7c [SCSI] sd: WRITE ... |
2244 |
get_unaligned_be32(&buffer[32]) & ~(1 << 31); |
c98a0eb0e [SCSI] sd: Logica... |
2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 |
if (!sdkp->lbpvpd) { /* LBP VPD page not provided */ if (sdkp->max_unmap_blocks) sd_config_discard(sdkp, SD_LBP_UNMAP); else sd_config_discard(sdkp, SD_LBP_WS16); } else { /* LBP VPD page tells us what to use */ if (sdkp->lbpu && sdkp->max_unmap_blocks) sd_config_discard(sdkp, SD_LBP_UNMAP); else if (sdkp->lbpws) sd_config_discard(sdkp, SD_LBP_WS16); else if (sdkp->lbpws10) sd_config_discard(sdkp, SD_LBP_WS10); else sd_config_discard(sdkp, SD_LBP_DISABLE); } |
e339c1a7c [SCSI] sd: WRITE ... |
2264 |
} |
e3deec090 [SCSI] eliminate ... |
2265 |
out: |
d11b69169 sd: Block limits ... |
2266 2267 2268 2269 |
kfree(buffer); } /** |
3821d7689 sd: Detect non-ro... |
2270 2271 2272 2273 2274 |
* sd_read_block_characteristics - Query block dev. characteristics * @disk: disk to query */ static void sd_read_block_characteristics(struct scsi_disk *sdkp) { |
e3deec090 [SCSI] eliminate ... |
2275 |
unsigned char *buffer; |
3821d7689 sd: Detect non-ro... |
2276 |
u16 rot; |
bb2d3de18 [SCSI] sd: Fix VP... |
2277 |
const int vpd_len = 64; |
3821d7689 sd: Detect non-ro... |
2278 |
|
e3deec090 [SCSI] eliminate ... |
2279 |
buffer = kmalloc(vpd_len, GFP_KERNEL); |
3821d7689 sd: Detect non-ro... |
2280 |
|
e3deec090 [SCSI] eliminate ... |
2281 2282 2283 2284 |
if (!buffer || /* Block Device Characteristics VPD */ scsi_get_vpd_page(sdkp->device, 0xb1, buffer, vpd_len)) goto out; |
3821d7689 sd: Detect non-ro... |
2285 2286 2287 2288 2289 |
rot = get_unaligned_be16(&buffer[4]); if (rot == 1) queue_flag_set_unlocked(QUEUE_FLAG_NONROT, sdkp->disk->queue); |
e3deec090 [SCSI] eliminate ... |
2290 |
out: |
3821d7689 sd: Detect non-ro... |
2291 2292 |
kfree(buffer); } |
045d3fe76 [SCSI] sd: Update... |
2293 |
/** |
c98a0eb0e [SCSI] sd: Logica... |
2294 |
* sd_read_block_provisioning - Query provisioning VPD page |
045d3fe76 [SCSI] sd: Update... |
2295 2296 |
* @disk: disk to query */ |
c98a0eb0e [SCSI] sd: Logica... |
2297 |
static void sd_read_block_provisioning(struct scsi_disk *sdkp) |
045d3fe76 [SCSI] sd: Update... |
2298 2299 2300 |
{ unsigned char *buffer; const int vpd_len = 8; |
c98a0eb0e [SCSI] sd: Logica... |
2301 |
if (sdkp->lbpme == 0) |
045d3fe76 [SCSI] sd: Update... |
2302 2303 2304 2305 2306 2307 |
return; buffer = kmalloc(vpd_len, GFP_KERNEL); if (!buffer || scsi_get_vpd_page(sdkp->device, 0xb2, buffer, vpd_len)) goto out; |
c98a0eb0e [SCSI] sd: Logica... |
2308 2309 2310 2311 |
sdkp->lbpvpd = 1; sdkp->lbpu = (buffer[5] >> 7) & 1; /* UNMAP */ sdkp->lbpws = (buffer[5] >> 6) & 1; /* WRITE SAME(16) with UNMAP */ sdkp->lbpws10 = (buffer[5] >> 5) & 1; /* WRITE SAME(10) with UNMAP */ |
045d3fe76 [SCSI] sd: Update... |
2312 2313 2314 2315 |
out: kfree(buffer); } |
ffd4bc2a9 [SCSI] sd: Avoid ... |
2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 |
static int sd_try_extended_inquiry(struct scsi_device *sdp) { /* * 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) return 1; return 0; } |
3821d7689 sd: Detect non-ro... |
2327 |
/** |
1da177e4c Linux-2.6.12-rc2 |
2328 2329 2330 2331 2332 2333 2334 2335 |
* sd_revalidate_disk - called the first time a new disk is seen, * performs disk spin up, read_capacity, etc. * @disk: struct gendisk we care about **/ static int sd_revalidate_disk(struct gendisk *disk) { struct scsi_disk *sdkp = scsi_disk(disk); struct scsi_device *sdp = sdkp->device; |
1da177e4c Linux-2.6.12-rc2 |
2336 |
unsigned char *buffer; |
4913efe45 block: deprecate ... |
2337 |
unsigned flush = 0; |
1da177e4c Linux-2.6.12-rc2 |
2338 |
|
fa0d34be0 [SCSI] sd: conver... |
2339 2340 2341 |
SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_revalidate_disk ")); |
1da177e4c Linux-2.6.12-rc2 |
2342 2343 2344 2345 2346 2347 2348 |
/* * If the device is offline, don't try and read capacity or any * of the other niceties. */ if (!scsi_device_online(sdp)) goto out; |
a6123f142 [SCSI] sd: remove... |
2349 |
buffer = kmalloc(SD_BUF_SIZE, GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
2350 |
if (!buffer) { |
e73aec824 [SCSI] sd: make p... |
2351 2352 2353 |
sd_printk(KERN_WARNING, sdkp, "sd_revalidate_disk: Memory " "allocation failure. "); |
ea73a9f23 [SCSI] convert sd... |
2354 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2355 |
} |
e73aec824 [SCSI] sd: make p... |
2356 |
sd_spinup_disk(sdkp); |
1da177e4c Linux-2.6.12-rc2 |
2357 2358 2359 2360 2361 2362 |
/* * Without media there is no reason to ask; moreover, some devices * react badly if we do. */ if (sdkp->media_present) { |
e73aec824 [SCSI] sd: make p... |
2363 |
sd_read_capacity(sdkp, buffer); |
ffd4bc2a9 [SCSI] sd: Avoid ... |
2364 2365 |
if (sd_try_extended_inquiry(sdp)) { |
c98a0eb0e [SCSI] sd: Logica... |
2366 |
sd_read_block_provisioning(sdkp); |
ffd4bc2a9 [SCSI] sd: Avoid ... |
2367 2368 2369 |
sd_read_block_limits(sdkp); sd_read_block_characteristics(sdkp); } |
e73aec824 [SCSI] sd: make p... |
2370 2371 |
sd_read_write_protect_flag(sdkp, buffer); sd_read_cache_type(sdkp, buffer); |
e0597d700 [SCSI] sd: Identi... |
2372 |
sd_read_app_tag_own(sdkp, buffer); |
1da177e4c Linux-2.6.12-rc2 |
2373 |
} |
461d4e90c [BLOCK] update SC... |
2374 |
|
70a9b8734 [SCSI] sd: Make r... |
2375 |
sdkp->first_scan = 0; |
461d4e90c [BLOCK] update SC... |
2376 2377 |
/* * We now have all cache related info, determine how we deal |
4913efe45 block: deprecate ... |
2378 |
* with flush requests. |
461d4e90c [BLOCK] update SC... |
2379 |
*/ |
4913efe45 block: deprecate ... |
2380 2381 2382 2383 2384 |
if (sdkp->WCE) { flush |= REQ_FLUSH; if (sdkp->DPOFUA) flush |= REQ_FUA; } |
461d4e90c [BLOCK] update SC... |
2385 |
|
4913efe45 block: deprecate ... |
2386 |
blk_queue_flush(sdkp->disk->queue, flush); |
461d4e90c [BLOCK] update SC... |
2387 |
|
1da177e4c Linux-2.6.12-rc2 |
2388 2389 |
set_capacity(disk, sdkp->capacity); kfree(buffer); |
1da177e4c Linux-2.6.12-rc2 |
2390 2391 2392 2393 2394 |
out: return 0; } /** |
72ec24bd7 SCSI: implement s... |
2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 |
* sd_unlock_native_capacity - unlock native capacity * @disk: struct gendisk to set capacity for * * Block layer calls this function if it detects that partitions * on @disk reach beyond the end of the device. If the SCSI host * implements ->unlock_native_capacity() method, it's invoked to * give it a chance to adjust the device capacity. * * CONTEXT: * Defined by block layer. Might sleep. */ static void sd_unlock_native_capacity(struct gendisk *disk) { struct scsi_device *sdev = scsi_disk(disk)->device; if (sdev->host->hostt->unlock_native_capacity) sdev->host->hostt->unlock_native_capacity(sdev); } /** |
3e1a7ff8a block: allow disk... |
2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 |
* sd_format_disk_name - format disk name * @prefix: name prefix - ie. "sd" for SCSI disks * @index: index of the disk to format name for * @buf: output buffer * @buflen: length of the output buffer * * SCSI disk names starts at sda. The 26th device is sdz and the * 27th is sdaa. The last one for two lettered suffix is sdzz * which is followed by sdaaa. * * This is basically 26 base counting with one extra 'nil' entry |
3ad2f3fbb tree-wide: Assort... |
2426 |
* at the beginning from the second digit on and can be |
3e1a7ff8a block: allow disk... |
2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 |
* determined using similar method as 26 base conversion with the * index shifted -1 after each digit is computed. * * CONTEXT: * Don't care. * * RETURNS: * 0 on success, -errno on failure. */ static int sd_format_disk_name(char *prefix, int index, char *buf, int buflen) { const int base = 'z' - 'a' + 1; char *begin = buf + strlen(prefix); char *end = buf + buflen; char *p; int unit; p = end - 1; *p = '\0'; unit = base; do { if (p == begin) return -EINVAL; *--p = 'a' + (index % unit); index = (index / unit) - 1; } while (index >= 0); memmove(begin, p, end - p); memcpy(buf, prefix, strlen(prefix)); return 0; } |
4ace92fc1 fastboot: make sc... |
2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 |
/* * The asynchronous part of sd_probe */ static void sd_probe_async(void *data, async_cookie_t cookie) { struct scsi_disk *sdkp = data; struct scsi_device *sdp; struct gendisk *gd; u32 index; struct device *dev; sdp = sdkp->device; gd = sdkp->disk; index = sdkp->index; dev = &sdp->sdev_gendev; |
1a03ae0f5 [SCSI] sd name sp... |
2474 2475 2476 |
gd->major = sd_major((index & 0xf0) >> 4); gd->first_minor = ((index & 0xf) << 4) | (index & 0xfff00); gd->minors = SD_MINORS; |
4ace92fc1 fastboot: make sc... |
2477 2478 2479 |
gd->fops = &sd_fops; gd->private_data = &sdkp->driver; gd->queue = sdkp->device->request_queue; |
70a9b8734 [SCSI] sd: Make r... |
2480 2481 2482 2483 2484 2485 2486 2487 2488 |
/* defaults, until the device tells us otherwise */ sdp->sector_size = 512; sdkp->capacity = 0; sdkp->media_present = 1; sdkp->write_prot = 0; sdkp->WCE = 0; sdkp->RCD = 0; sdkp->ATO = 0; sdkp->first_scan = 1; |
4ace92fc1 fastboot: make sc... |
2489 2490 2491 |
sd_revalidate_disk(gd); blk_queue_prep_rq(sdp->request_queue, sd_prep_fn); |
f1126e950 scsi: add sd_unpr... |
2492 |
blk_queue_unprep_rq(sdp->request_queue, sd_unprep_fn); |
4ace92fc1 fastboot: make sc... |
2493 2494 |
gd->driverfs_dev = &sdp->sdev_gendev; |
97fedbbe1 Remove GENHD_FL_D... |
2495 |
gd->flags = GENHD_FL_EXT_DEVT; |
2bae0093c [SCSI] sd: implem... |
2496 |
if (sdp->removable) { |
4ace92fc1 fastboot: make sc... |
2497 |
gd->flags |= GENHD_FL_REMOVABLE; |
2bae0093c [SCSI] sd: implem... |
2498 2499 |
gd->events |= DISK_EVENT_MEDIA_CHANGE; } |
4ace92fc1 fastboot: make sc... |
2500 |
|
4ace92fc1 fastboot: make sc... |
2501 2502 |
add_disk(gd); sd_dif_config_host(sdkp); |
3821d7689 sd: Detect non-ro... |
2503 |
sd_revalidate_disk(gd); |
4ace92fc1 fastboot: make sc... |
2504 2505 2506 |
sd_printk(KERN_NOTICE, sdkp, "Attached SCSI %sdisk ", sdp->removable ? "removable " : ""); |
478a8a054 [SCSI] sd: add su... |
2507 |
scsi_autopm_put_device(sdp); |
ea038f63a [SCSI] fix oops d... |
2508 |
put_device(&sdkp->dev); |
4ace92fc1 fastboot: make sc... |
2509 |
} |
3e1a7ff8a block: allow disk... |
2510 |
/** |
1da177e4c Linux-2.6.12-rc2 |
2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 |
* sd_probe - called during driver initialization and whenever a * new scsi device is attached to the system. It is called once * for each scsi device (not just disks) present. * @dev: pointer to device object * * Returns 0 if successful (or not interested in this scsi device * (e.g. scanner)); 1 when there is an error. * * Note: this function is invoked from the scsi mid-level. * This function sets up the mapping between a given * <host,channel,id,lun> (found in sdp) and new device name * (e.g. /dev/sda). More precisely it is the block device major * and minor number that is chosen here. * * Assume sd_attach is not re-entrant (for time being) * Also think about sd_attach() and sd_remove() running coincidentally. **/ static int sd_probe(struct device *dev) { struct scsi_device *sdp = to_scsi_device(dev); struct scsi_disk *sdkp; struct gendisk *gd; |
439d77f70 scsi/sd.c: quiet ... |
2533 |
int index; |
1da177e4c Linux-2.6.12-rc2 |
2534 2535 2536 |
int error; error = -ENODEV; |
631e8a139 [SCSI] TYPE_RBC c... |
2537 |
if (sdp->type != TYPE_DISK && sdp->type != TYPE_MOD && sdp->type != TYPE_RBC) |
1da177e4c Linux-2.6.12-rc2 |
2538 |
goto out; |
9ccfc756a [SCSI] move the m... |
2539 2540 2541 |
SCSI_LOG_HLQUEUE(3, sdev_printk(KERN_INFO, sdp, "sd_attach ")); |
1da177e4c Linux-2.6.12-rc2 |
2542 2543 |
error = -ENOMEM; |
24669f75a [SCSI] SCSI core ... |
2544 |
sdkp = kzalloc(sizeof(*sdkp), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
2545 2546 |
if (!sdkp) goto out; |
689d6fac4 block: replace @e... |
2547 |
gd = alloc_disk(SD_MINORS); |
1da177e4c Linux-2.6.12-rc2 |
2548 2549 |
if (!gd) goto out_free; |
f27bac276 [SCSI] sd: update... |
2550 2551 2552 |
do { if (!ida_pre_get(&sd_index_ida, GFP_KERNEL)) goto out_put; |
1da177e4c Linux-2.6.12-rc2 |
2553 |
|
4034cc681 [SCSI] sd: revive... |
2554 |
spin_lock(&sd_index_lock); |
f27bac276 [SCSI] sd: update... |
2555 |
error = ida_get_new(&sd_index_ida, &index); |
4034cc681 [SCSI] sd: revive... |
2556 |
spin_unlock(&sd_index_lock); |
f27bac276 [SCSI] sd: update... |
2557 |
} while (error == -EAGAIN); |
1da177e4c Linux-2.6.12-rc2 |
2558 |
|
21208ae5a [SCSI] sd: remove... |
2559 2560 2561 |
if (error) { sdev_printk(KERN_WARNING, sdp, "sd_probe: memory exhausted. "); |
1da177e4c Linux-2.6.12-rc2 |
2562 |
goto out_put; |
1a03ae0f5 [SCSI] sd name sp... |
2563 |
} |
3e1a7ff8a block: allow disk... |
2564 |
error = sd_format_disk_name("sd", index, gd->disk_name, DISK_NAME_LEN); |
21208ae5a [SCSI] sd: remove... |
2565 2566 2567 |
if (error) { sdev_printk(KERN_WARNING, sdp, "SCSI disk (sd) name length exceeded. "); |
f27bac276 [SCSI] sd: update... |
2568 |
goto out_free_index; |
21208ae5a [SCSI] sd: remove... |
2569 |
} |
f27bac276 [SCSI] sd: update... |
2570 |
|
1da177e4c Linux-2.6.12-rc2 |
2571 2572 2573 2574 |
sdkp->device = sdp; sdkp->driver = &sd_template; sdkp->disk = gd; sdkp->index = index; |
409f3499a scsi/sd: remove b... |
2575 |
atomic_set(&sdkp->openers, 0); |
1da177e4c Linux-2.6.12-rc2 |
2576 |
|
601e76382 [SCSI] sd: fix bu... |
2577 2578 2579 2580 2581 2582 2583 2584 2585 |
if (!sdp->request_queue->rq_timeout) { if (sdp->type != TYPE_MOD) blk_queue_rq_timeout(sdp->request_queue, SD_TIMEOUT); else blk_queue_rq_timeout(sdp->request_queue, SD_MOD_TIMEOUT); } device_initialize(&sdkp->dev); |
478a8a054 [SCSI] sd: add su... |
2586 |
sdkp->dev.parent = dev; |
601e76382 [SCSI] sd: fix bu... |
2587 |
sdkp->dev.class = &sd_disk_class; |
478a8a054 [SCSI] sd: add su... |
2588 |
dev_set_name(&sdkp->dev, dev_name(dev)); |
601e76382 [SCSI] sd: fix bu... |
2589 2590 2591 |
if (device_add(&sdkp->dev)) goto out_free_index; |
478a8a054 [SCSI] sd: add su... |
2592 2593 |
get_device(dev); dev_set_drvdata(dev, sdkp); |
601e76382 [SCSI] sd: fix bu... |
2594 |
|
ea038f63a [SCSI] fix oops d... |
2595 |
get_device(&sdkp->dev); /* prevent release before async_schedule */ |
4ace92fc1 fastboot: make sc... |
2596 |
async_schedule(sd_probe_async, sdkp); |
1da177e4c Linux-2.6.12-rc2 |
2597 2598 |
return 0; |
f27bac276 [SCSI] sd: update... |
2599 |
out_free_index: |
4034cc681 [SCSI] sd: revive... |
2600 |
spin_lock(&sd_index_lock); |
f27bac276 [SCSI] sd: update... |
2601 |
ida_remove(&sd_index_ida, index); |
4034cc681 [SCSI] sd: revive... |
2602 |
spin_unlock(&sd_index_lock); |
6bdaa1f17 [SCSI] allow disp... |
2603 |
out_put: |
1da177e4c Linux-2.6.12-rc2 |
2604 |
put_disk(gd); |
6bdaa1f17 [SCSI] allow disp... |
2605 |
out_free: |
1da177e4c Linux-2.6.12-rc2 |
2606 |
kfree(sdkp); |
6bdaa1f17 [SCSI] allow disp... |
2607 |
out: |
1da177e4c Linux-2.6.12-rc2 |
2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 |
return error; } /** * sd_remove - called whenever a scsi disk (previously recognized by * sd_probe) is detached from the system. It is called (potentially * multiple times) during sd module unload. * @sdp: pointer to mid level scsi device object * * Note: this function is invoked from the scsi mid-level. * This function potentially frees up a device name (e.g. /dev/sdc) * that could be re-used by a subsequent sd_probe(). * This function is not called when the built-in sd driver is "exit-ed". **/ static int sd_remove(struct device *dev) { |
601e76382 [SCSI] sd: fix bu... |
2624 |
struct scsi_disk *sdkp; |
1da177e4c Linux-2.6.12-rc2 |
2625 |
|
601e76382 [SCSI] sd: fix bu... |
2626 |
sdkp = dev_get_drvdata(dev); |
478a8a054 [SCSI] sd: add su... |
2627 2628 2629 |
scsi_autopm_get_device(sdkp->device); async_synchronize_full(); |
b391277a5 sd, sr: fix Drive... |
2630 |
blk_queue_prep_rq(sdkp->device->request_queue, scsi_prep_fn); |
82b6d57fb scsi: need to res... |
2631 |
blk_queue_unprep_rq(sdkp->device->request_queue, NULL); |
ee959b00c SCSI: convert str... |
2632 |
device_del(&sdkp->dev); |
1da177e4c Linux-2.6.12-rc2 |
2633 2634 |
del_gendisk(sdkp->disk); sd_shutdown(dev); |
39b7f1e25 [SCSI] sd: Fix re... |
2635 |
|
0b9506723 [SCSI] turn most ... |
2636 |
mutex_lock(&sd_ref_mutex); |
39b7f1e25 [SCSI] sd: Fix re... |
2637 |
dev_set_drvdata(dev, NULL); |
ee959b00c SCSI: convert str... |
2638 |
put_device(&sdkp->dev); |
0b9506723 [SCSI] turn most ... |
2639 |
mutex_unlock(&sd_ref_mutex); |
1da177e4c Linux-2.6.12-rc2 |
2640 2641 2642 2643 2644 2645 |
return 0; } /** * scsi_disk_release - Called to free the scsi_disk structure |
ee959b00c SCSI: convert str... |
2646 |
* @dev: pointer to embedded class device |
1da177e4c Linux-2.6.12-rc2 |
2647 |
* |
0b9506723 [SCSI] turn most ... |
2648 |
* sd_ref_mutex must be held entering this routine. Because it is |
1da177e4c Linux-2.6.12-rc2 |
2649 2650 |
* called on last put, you should always use the scsi_disk_get() * scsi_disk_put() helpers which manipulate the semaphore directly |
ee959b00c SCSI: convert str... |
2651 |
* and never do a direct put_device. |
1da177e4c Linux-2.6.12-rc2 |
2652 |
**/ |
ee959b00c SCSI: convert str... |
2653 |
static void scsi_disk_release(struct device *dev) |
1da177e4c Linux-2.6.12-rc2 |
2654 |
{ |
ee959b00c SCSI: convert str... |
2655 |
struct scsi_disk *sdkp = to_scsi_disk(dev); |
1da177e4c Linux-2.6.12-rc2 |
2656 2657 |
struct gendisk *disk = sdkp->disk; |
4034cc681 [SCSI] sd: revive... |
2658 |
spin_lock(&sd_index_lock); |
f27bac276 [SCSI] sd: update... |
2659 |
ida_remove(&sd_index_ida, sdkp->index); |
4034cc681 [SCSI] sd: revive... |
2660 |
spin_unlock(&sd_index_lock); |
1da177e4c Linux-2.6.12-rc2 |
2661 2662 |
disk->private_data = NULL; |
1da177e4c Linux-2.6.12-rc2 |
2663 |
put_disk(disk); |
39b7f1e25 [SCSI] sd: Fix re... |
2664 |
put_device(&sdkp->device->sdev_gendev); |
1da177e4c Linux-2.6.12-rc2 |
2665 2666 2667 |
kfree(sdkp); } |
cc5d2c8c6 [SCSI] sd: fix up... |
2668 |
static int sd_start_stop_device(struct scsi_disk *sdkp, int start) |
c3c94c5a2 [SCSI] sd: implem... |
2669 2670 2671 |
{ unsigned char cmd[6] = { START_STOP }; /* START_VALID */ struct scsi_sense_hdr sshdr; |
cc5d2c8c6 [SCSI] sd: fix up... |
2672 |
struct scsi_device *sdp = sdkp->device; |
c3c94c5a2 [SCSI] sd: implem... |
2673 2674 2675 2676 |
int res; if (start) cmd[4] |= 1; /* START */ |
d2886ea36 scsi: sd: optiona... |
2677 2678 |
if (sdp->start_stop_pwr_cond) cmd[4] |= start ? 1 << 4 : 3 << 4; /* Active or Standby */ |
c3c94c5a2 [SCSI] sd: implem... |
2679 2680 2681 2682 |
if (!scsi_device_online(sdp)) return -ENODEV; res = scsi_execute_req(sdp, cmd, DMA_NONE, NULL, 0, &sshdr, |
f4f4e47e4 [SCSI] add residu... |
2683 |
SD_TIMEOUT, SD_MAX_RETRIES, NULL); |
c3c94c5a2 [SCSI] sd: implem... |
2684 |
if (res) { |
cc5d2c8c6 [SCSI] sd: fix up... |
2685 2686 2687 |
sd_printk(KERN_WARNING, sdkp, "START_STOP FAILED "); sd_print_result(sdkp, res); |
c3c94c5a2 [SCSI] sd: implem... |
2688 |
if (driver_byte(res) & DRIVER_SENSE) |
cc5d2c8c6 [SCSI] sd: fix up... |
2689 |
sd_print_sense_hdr(sdkp, &sshdr); |
c3c94c5a2 [SCSI] sd: implem... |
2690 2691 2692 2693 |
} return res; } |
1da177e4c Linux-2.6.12-rc2 |
2694 2695 2696 2697 2698 2699 2700 |
/* * Send a SYNCHRONIZE CACHE instruction down to the device through * the normal SCSI command structure. Wait for the command to * complete. */ static void sd_shutdown(struct device *dev) { |
39b7f1e25 [SCSI] sd: Fix re... |
2701 |
struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev); |
1da177e4c Linux-2.6.12-rc2 |
2702 2703 2704 |
if (!sdkp) return; /* this can happen */ |
54f575884 [SCSI] sd: check ... |
2705 2706 |
if (pm_runtime_suspended(dev)) goto exit; |
39b7f1e25 [SCSI] sd: Fix re... |
2707 |
if (sdkp->WCE) { |
e73aec824 [SCSI] sd: make p... |
2708 2709 2710 |
sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache "); sd_sync_cache(sdkp); |
39b7f1e25 [SCSI] sd: Fix re... |
2711 |
} |
c3c94c5a2 [SCSI] sd: implem... |
2712 |
|
cc5d2c8c6 [SCSI] sd: fix up... |
2713 2714 2715 2716 |
if (system_state != SYSTEM_RESTART && sdkp->device->manage_start_stop) { sd_printk(KERN_NOTICE, sdkp, "Stopping disk "); sd_start_stop_device(sdkp, 0); |
c3c94c5a2 [SCSI] sd: implem... |
2717 |
} |
54f575884 [SCSI] sd: check ... |
2718 |
exit: |
39b7f1e25 [SCSI] sd: Fix re... |
2719 2720 |
scsi_disk_put(sdkp); } |
1da177e4c Linux-2.6.12-rc2 |
2721 |
|
c3c94c5a2 [SCSI] sd: implem... |
2722 2723 |
static int sd_suspend(struct device *dev, pm_message_t mesg) { |
c3c94c5a2 [SCSI] sd: implem... |
2724 |
struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev); |
09ff92fea [SCSI] sd: fix re... |
2725 |
int ret = 0; |
c3c94c5a2 [SCSI] sd: implem... |
2726 2727 2728 2729 2730 |
if (!sdkp) return 0; /* this can happen */ if (sdkp->WCE) { |
cc5d2c8c6 [SCSI] sd: fix up... |
2731 2732 |
sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache "); |
c3c94c5a2 [SCSI] sd: implem... |
2733 2734 |
ret = sd_sync_cache(sdkp); if (ret) |
09ff92fea [SCSI] sd: fix re... |
2735 |
goto done; |
c3c94c5a2 [SCSI] sd: implem... |
2736 |
} |
3a2d5b700 PM: Introduce PM_... |
2737 |
if ((mesg.event & PM_EVENT_SLEEP) && sdkp->device->manage_start_stop) { |
cc5d2c8c6 [SCSI] sd: fix up... |
2738 2739 2740 |
sd_printk(KERN_NOTICE, sdkp, "Stopping disk "); ret = sd_start_stop_device(sdkp, 0); |
c3c94c5a2 [SCSI] sd: implem... |
2741 |
} |
09ff92fea [SCSI] sd: fix re... |
2742 2743 2744 |
done: scsi_disk_put(sdkp); return ret; |
c3c94c5a2 [SCSI] sd: implem... |
2745 2746 2747 2748 |
} static int sd_resume(struct device *dev) { |
c3c94c5a2 [SCSI] sd: implem... |
2749 |
struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev); |
09ff92fea [SCSI] sd: fix re... |
2750 |
int ret = 0; |
c3c94c5a2 [SCSI] sd: implem... |
2751 |
|
cc5d2c8c6 [SCSI] sd: fix up... |
2752 |
if (!sdkp->device->manage_start_stop) |
09ff92fea [SCSI] sd: fix re... |
2753 |
goto done; |
c3c94c5a2 [SCSI] sd: implem... |
2754 |
|
cc5d2c8c6 [SCSI] sd: fix up... |
2755 2756 |
sd_printk(KERN_NOTICE, sdkp, "Starting disk "); |
09ff92fea [SCSI] sd: fix re... |
2757 |
ret = sd_start_stop_device(sdkp, 1); |
c3c94c5a2 [SCSI] sd: implem... |
2758 |
|
09ff92fea [SCSI] sd: fix re... |
2759 2760 2761 |
done: scsi_disk_put(sdkp); return ret; |
c3c94c5a2 [SCSI] sd: implem... |
2762 |
} |
1da177e4c Linux-2.6.12-rc2 |
2763 2764 2765 2766 2767 2768 2769 2770 |
/** * init_sd - entry point for this driver (both when built in or when * a module). * * Note: this function registers this driver with the scsi mid-level. **/ static int __init init_sd(void) { |
5e4009ba3 [SCSI] SCSI sd: f... |
2771 |
int majors = 0, i, err; |
1da177e4c Linux-2.6.12-rc2 |
2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 |
SCSI_LOG_HLQUEUE(3, printk("init_sd: sd driver entry point ")); for (i = 0; i < SD_MAJORS; i++) if (register_blkdev(sd_major(i), "sd") == 0) majors++; if (!majors) return -ENODEV; |
5e4009ba3 [SCSI] SCSI sd: f... |
2782 2783 2784 |
err = class_register(&sd_disk_class); if (err) goto err_out; |
6bdaa1f17 [SCSI] allow disp... |
2785 |
|
5e4009ba3 [SCSI] SCSI sd: f... |
2786 2787 2788 |
err = scsi_register_driver(&sd_template.gendrv); if (err) goto err_out_class; |
4e7392ec5 [SCSI] sd: Suppor... |
2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 |
sd_cdb_cache = kmem_cache_create("sd_ext_cdb", SD_EXT_CDB_SIZE, 0, 0, NULL); if (!sd_cdb_cache) { printk(KERN_ERR "sd: can't init extended cdb cache "); goto err_out_class; } sd_cdb_pool = mempool_create_slab_pool(SD_MEMPOOL_SIZE, sd_cdb_cache); if (!sd_cdb_pool) { printk(KERN_ERR "sd: can't init extended cdb pool "); goto err_out_cache; } |
5e4009ba3 [SCSI] SCSI sd: f... |
2803 |
return 0; |
4e7392ec5 [SCSI] sd: Suppor... |
2804 2805 |
err_out_cache: kmem_cache_destroy(sd_cdb_cache); |
5e4009ba3 [SCSI] SCSI sd: f... |
2806 2807 2808 2809 2810 2811 |
err_out_class: class_unregister(&sd_disk_class); err_out: for (i = 0; i < SD_MAJORS; i++) unregister_blkdev(sd_major(i), "sd"); return err; |
1da177e4c Linux-2.6.12-rc2 |
2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 |
} /** * exit_sd - exit point for this driver (when it is a module). * * Note: this function unregisters this driver from the scsi mid-level. **/ static void __exit exit_sd(void) { int i; SCSI_LOG_HLQUEUE(3, printk("exit_sd: exiting sd driver ")); |
4e7392ec5 [SCSI] sd: Suppor... |
2825 2826 |
mempool_destroy(sd_cdb_pool); kmem_cache_destroy(sd_cdb_cache); |
1da177e4c Linux-2.6.12-rc2 |
2827 |
scsi_unregister_driver(&sd_template.gendrv); |
5e4009ba3 [SCSI] SCSI sd: f... |
2828 |
class_unregister(&sd_disk_class); |
1da177e4c Linux-2.6.12-rc2 |
2829 2830 2831 |
for (i = 0; i < SD_MAJORS; i++) unregister_blkdev(sd_major(i), "sd"); } |
1da177e4c Linux-2.6.12-rc2 |
2832 2833 |
module_init(init_sd); module_exit(exit_sd); |
e73aec824 [SCSI] sd: make p... |
2834 2835 2836 2837 |
static void sd_print_sense_hdr(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr) { |
2e4c33291 [SCSI] sd, sym53c... |
2838 |
sd_printk(KERN_INFO, sdkp, " "); |
e73aec824 [SCSI] sd: make p... |
2839 |
scsi_show_sense_hdr(sshdr); |
2e4c33291 [SCSI] sd, sym53c... |
2840 |
sd_printk(KERN_INFO, sdkp, " "); |
e73aec824 [SCSI] sd: make p... |
2841 2842 2843 2844 2845 |
scsi_show_extd_sense(sshdr->asc, sshdr->ascq); } static void sd_print_result(struct scsi_disk *sdkp, int result) { |
2e4c33291 [SCSI] sd, sym53c... |
2846 |
sd_printk(KERN_INFO, sdkp, " "); |
e73aec824 [SCSI] sd: make p... |
2847 2848 |
scsi_show_result(result); } |