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drivers/scsi/scsi_sysfs.c
37.7 KB
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/* * scsi_sysfs.c * * SCSI sysfs interface routines. * * Created to pull SCSI mid layer sysfs routines into one file. */ |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/init.h> #include <linux/blkdev.h> #include <linux/device.h> |
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#include <linux/pm_runtime.h> |
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#include <scsi/scsi.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsi_tcq.h> |
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#include <scsi/scsi_dh.h> |
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#include <scsi/scsi_transport.h> |
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#include <scsi/scsi_driver.h> |
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#include "scsi_priv.h" #include "scsi_logging.h" |
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static struct device_type scsi_dev_type; |
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static const struct { |
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enum scsi_device_state value; char *name; } sdev_states[] = { { SDEV_CREATED, "created" }, { SDEV_RUNNING, "running" }, { SDEV_CANCEL, "cancel" }, { SDEV_DEL, "deleted" }, { SDEV_QUIESCE, "quiesce" }, { SDEV_OFFLINE, "offline" }, |
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{ SDEV_TRANSPORT_OFFLINE, "transport-offline" }, |
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{ SDEV_BLOCK, "blocked" }, |
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{ SDEV_CREATED_BLOCK, "created-blocked" }, |
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}; const char *scsi_device_state_name(enum scsi_device_state state) { int i; char *name = NULL; |
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for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
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if (sdev_states[i].value == state) { name = sdev_states[i].name; break; } } return name; } |
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static const struct { |
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enum scsi_host_state value; char *name; } shost_states[] = { { SHOST_CREATED, "created" }, { SHOST_RUNNING, "running" }, { SHOST_CANCEL, "cancel" }, { SHOST_DEL, "deleted" }, { SHOST_RECOVERY, "recovery" }, |
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{ SHOST_CANCEL_RECOVERY, "cancel/recovery" }, { SHOST_DEL_RECOVERY, "deleted/recovery", }, |
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}; const char *scsi_host_state_name(enum scsi_host_state state) { int i; char *name = NULL; |
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for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
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if (shost_states[i].value == state) { name = shost_states[i].name; break; } } return name; } |
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#ifdef CONFIG_SCSI_DH |
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static const struct { unsigned char value; char *name; } sdev_access_states[] = { { SCSI_ACCESS_STATE_OPTIMAL, "active/optimized" }, { SCSI_ACCESS_STATE_ACTIVE, "active/non-optimized" }, { SCSI_ACCESS_STATE_STANDBY, "standby" }, { SCSI_ACCESS_STATE_UNAVAILABLE, "unavailable" }, { SCSI_ACCESS_STATE_LBA, "lba-dependent" }, { SCSI_ACCESS_STATE_OFFLINE, "offline" }, { SCSI_ACCESS_STATE_TRANSITIONING, "transitioning" }, }; |
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static const char *scsi_access_state_name(unsigned char state) |
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{ int i; char *name = NULL; for (i = 0; i < ARRAY_SIZE(sdev_access_states); i++) { if (sdev_access_states[i].value == state) { name = sdev_access_states[i].name; break; } } return name; } |
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#endif |
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static int check_set(unsigned long long *val, char *src) |
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{ char *last; if (strncmp(src, "-", 20) == 0) { *val = SCAN_WILD_CARD; } else { /* * Doesn't check for int overflow */ |
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*val = simple_strtoull(src, &last, 0); |
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if (*last != '\0') return 1; } return 0; } static int scsi_scan(struct Scsi_Host *shost, const char *str) { |
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char s1[15], s2[15], s3[17], junk; unsigned long long channel, id, lun; |
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int res; |
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res = sscanf(str, "%10s %10s %16s %c", s1, s2, s3, &junk); |
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if (res != 3) return -EINVAL; if (check_set(&channel, s1)) return -EINVAL; if (check_set(&id, s2)) return -EINVAL; if (check_set(&lun, s3)) return -EINVAL; |
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if (shost->transportt->user_scan) res = shost->transportt->user_scan(shost, channel, id, lun); else |
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res = scsi_scan_host_selected(shost, channel, id, lun, SCSI_SCAN_MANUAL); |
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return res; } /* * shost_show_function: macro to create an attr function that can be used to * show a non-bit field. */ #define shost_show_function(name, field, format_string) \ static ssize_t \ |
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show_##name (struct device *dev, struct device_attribute *attr, \ char *buf) \ |
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{ \ |
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struct Scsi_Host *shost = class_to_shost(dev); \ |
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return snprintf (buf, 20, format_string, shost->field); \ } /* * shost_rd_attr: macro to create a function and attribute variable for a * read only field. */ #define shost_rd_attr2(name, field, format_string) \ shost_show_function(name, field, format_string) \ |
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static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL); |
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#define shost_rd_attr(field, format_string) \ shost_rd_attr2(field, field, format_string) /* * Create the actual show/store functions and data structures. */ |
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static ssize_t store_scan(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
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{ |
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struct Scsi_Host *shost = class_to_shost(dev); |
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int res; res = scsi_scan(shost, buf); if (res == 0) res = count; return res; }; |
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static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan); |
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static ssize_t |
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store_shost_state(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
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{ int i; |
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struct Scsi_Host *shost = class_to_shost(dev); |
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enum scsi_host_state state = 0; |
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for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
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const int len = strlen(shost_states[i].name); if (strncmp(shost_states[i].name, buf, len) == 0 && buf[len] == ' ') { state = shost_states[i].value; break; } } if (!state) return -EINVAL; if (scsi_host_set_state(shost, state)) return -EINVAL; return count; } static ssize_t |
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show_shost_state(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct Scsi_Host *shost = class_to_shost(dev); |
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const char *name = scsi_host_state_name(shost->shost_state); if (!name) return -EINVAL; return snprintf(buf, 20, "%s ", name); } |
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/* DEVICE_ATTR(state) clashes with dev_attr_state for sdev */ |
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static struct device_attribute dev_attr_hstate = |
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__ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state); |
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static ssize_t show_shost_mode(unsigned int mode, char *buf) { ssize_t len = 0; if (mode & MODE_INITIATOR) len = sprintf(buf, "%s", "Initiator"); if (mode & MODE_TARGET) len += sprintf(buf + len, "%s%s", len ? ", " : "", "Target"); len += sprintf(buf + len, " "); return len; } |
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static ssize_t show_shost_supported_mode(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct Scsi_Host *shost = class_to_shost(dev); |
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unsigned int supported_mode = shost->hostt->supported_mode; |
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if (supported_mode == MODE_UNKNOWN) /* by default this should be initiator */ supported_mode = MODE_INITIATOR; return show_shost_mode(supported_mode, buf); |
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} |
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static DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL); |
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static ssize_t show_shost_active_mode(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct Scsi_Host *shost = class_to_shost(dev); |
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if (shost->active_mode == MODE_UNKNOWN) return snprintf(buf, 20, "unknown "); else return show_shost_mode(shost->active_mode, buf); } |
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static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL); |
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static int check_reset_type(const char *str) |
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{ |
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if (sysfs_streq(str, "adapter")) |
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return SCSI_ADAPTER_RESET; |
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else if (sysfs_streq(str, "firmware")) |
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return SCSI_FIRMWARE_RESET; else return 0; } static ssize_t store_host_reset(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct Scsi_Host *shost = class_to_shost(dev); struct scsi_host_template *sht = shost->hostt; int ret = -EINVAL; |
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int type; |
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type = check_reset_type(buf); |
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if (!type) goto exit_store_host_reset; if (sht->host_reset) ret = sht->host_reset(shost, type); exit_store_host_reset: if (ret == 0) ret = count; return ret; } static DEVICE_ATTR(host_reset, S_IWUSR, NULL, store_host_reset); |
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static ssize_t show_shost_eh_deadline(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(dev); |
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if (shost->eh_deadline == -1) return snprintf(buf, strlen("off") + 2, "off "); return sprintf(buf, "%u ", shost->eh_deadline / HZ); |
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} static ssize_t store_shost_eh_deadline(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct Scsi_Host *shost = class_to_shost(dev); int ret = -EINVAL; |
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unsigned long deadline, flags; |
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if (shost->transportt && (shost->transportt->eh_strategy_handler || !shost->hostt->eh_host_reset_handler)) |
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return ret; |
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if (!strncmp(buf, "off", strlen("off"))) deadline = -1; else { ret = kstrtoul(buf, 10, &deadline); if (ret) return ret; if (deadline * HZ > UINT_MAX) return -EINVAL; } spin_lock_irqsave(shost->host_lock, flags); if (scsi_host_in_recovery(shost)) ret = -EBUSY; else { if (deadline == -1) shost->eh_deadline = -1; else |
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shost->eh_deadline = deadline * HZ; |
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ret = count; |
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} |
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spin_unlock_irqrestore(shost->host_lock, flags); |
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return ret; } static DEVICE_ATTR(eh_deadline, S_IRUGO | S_IWUSR, show_shost_eh_deadline, store_shost_eh_deadline); |
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shost_rd_attr(use_blk_mq, "%d "); |
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shost_rd_attr(unique_id, "%u "); |
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shost_rd_attr(cmd_per_lun, "%hd "); |
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shost_rd_attr(can_queue, "%hd "); |
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shost_rd_attr(sg_tablesize, "%hu "); |
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shost_rd_attr(sg_prot_tablesize, "%hu "); |
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shost_rd_attr(unchecked_isa_dma, "%d "); |
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shost_rd_attr(prot_capabilities, "%u "); shost_rd_attr(prot_guard_type, "%hd "); |
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shost_rd_attr2(proc_name, hostt->proc_name, "%s "); |
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static ssize_t show_host_busy(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(dev); return snprintf(buf, 20, "%d ", atomic_read(&shost->host_busy)); } static DEVICE_ATTR(host_busy, S_IRUGO, show_host_busy, NULL); |
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static struct attribute *scsi_sysfs_shost_attrs[] = { |
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&dev_attr_use_blk_mq.attr, |
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&dev_attr_unique_id.attr, &dev_attr_host_busy.attr, &dev_attr_cmd_per_lun.attr, &dev_attr_can_queue.attr, &dev_attr_sg_tablesize.attr, |
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&dev_attr_sg_prot_tablesize.attr, |
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&dev_attr_unchecked_isa_dma.attr, &dev_attr_proc_name.attr, &dev_attr_scan.attr, &dev_attr_hstate.attr, &dev_attr_supported_mode.attr, &dev_attr_active_mode.attr, |
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&dev_attr_prot_capabilities.attr, &dev_attr_prot_guard_type.attr, |
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&dev_attr_host_reset.attr, |
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&dev_attr_eh_deadline.attr, |
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NULL }; |
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static struct attribute_group scsi_shost_attr_group = { |
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.attrs = scsi_sysfs_shost_attrs, }; |
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const struct attribute_group *scsi_sysfs_shost_attr_groups[] = { |
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&scsi_shost_attr_group, |
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NULL }; |
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static void scsi_device_cls_release(struct device *class_dev) |
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{ struct scsi_device *sdev; sdev = class_to_sdev(class_dev); put_device(&sdev->sdev_gendev); } |
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static void scsi_device_dev_release_usercontext(struct work_struct *work) |
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{ struct scsi_device *sdev; struct device *parent; |
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struct list_head *this, *tmp; |
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unsigned long flags; |
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sdev = container_of(work, struct scsi_device, ew.work); |
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scsi_dh_release_device(sdev); |
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parent = sdev->sdev_gendev.parent; |
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spin_lock_irqsave(sdev->host->host_lock, flags); |
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list_del(&sdev->siblings); list_del(&sdev->same_target_siblings); list_del(&sdev->starved_entry); spin_unlock_irqrestore(sdev->host->host_lock, flags); |
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cancel_work_sync(&sdev->event_work); list_for_each_safe(this, tmp, &sdev->event_list) { struct scsi_event *evt; evt = list_entry(this, struct scsi_event, node); list_del(&evt->node); kfree(evt); } |
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blk_put_queue(sdev->request_queue); |
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/* NULL queue means the device can't be used */ sdev->request_queue = NULL; |
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kfree(sdev->vpd_pg83); kfree(sdev->vpd_pg80); |
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kfree(sdev->inquiry); kfree(sdev); if (parent) put_device(parent); } |
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static void scsi_device_dev_release(struct device *dev) { |
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struct scsi_device *sdp = to_scsi_device(dev); |
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execute_in_process_context(scsi_device_dev_release_usercontext, |
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&sdp->ew); |
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} |
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static struct class sdev_class = { |
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.name = "scsi_device", |
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.dev_release = scsi_device_cls_release, |
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}; /* all probing is done in the individual ->probe routines */ static int scsi_bus_match(struct device *dev, struct device_driver *gendrv) { |
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struct scsi_device *sdp; if (dev->type != &scsi_dev_type) return 0; sdp = to_scsi_device(dev); |
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if (sdp->no_uld_attach) return 0; return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0; } |
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static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
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{ |
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struct scsi_device *sdev; if (dev->type != &scsi_dev_type) return 0; sdev = to_scsi_device(dev); |
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add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); |
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return 0; } |
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struct bus_type scsi_bus_type = { .name = "scsi", .match = scsi_bus_match, |
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.uevent = scsi_bus_uevent, |
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#ifdef CONFIG_PM |
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.pm = &scsi_bus_pm_ops, |
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#endif |
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}; |
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EXPORT_SYMBOL_GPL(scsi_bus_type); |
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int scsi_sysfs_register(void) { int error; error = bus_register(&scsi_bus_type); if (!error) { error = class_register(&sdev_class); if (error) bus_unregister(&scsi_bus_type); } return error; } void scsi_sysfs_unregister(void) { class_unregister(&sdev_class); bus_unregister(&scsi_bus_type); } /* * sdev_show_function: macro to create an attr function that can be used to * show a non-bit field. */ #define sdev_show_function(field, format_string) \ static ssize_t \ |
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sdev_show_##field (struct device *dev, struct device_attribute *attr, \ char *buf) \ |
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{ \ struct scsi_device *sdev; \ sdev = to_scsi_device(dev); \ return snprintf (buf, 20, format_string, sdev->field); \ } \ /* * sdev_rd_attr: macro to create a function and attribute variable for a * read only field. */ #define sdev_rd_attr(field, format_string) \ sdev_show_function(field, format_string) \ static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL); /* |
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* sdev_rw_attr: create a function and attribute variable for a |
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* read/write field. */ #define sdev_rw_attr(field, format_string) \ sdev_show_function(field, format_string) \ \ static ssize_t \ |
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sdev_store_##field (struct device *dev, struct device_attribute *attr, \ const char *buf, size_t count) \ |
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|
549 550 551 |
{ \ struct scsi_device *sdev; \ sdev = to_scsi_device(dev); \ |
160e7f671
|
552 |
sscanf (buf, format_string, &sdev->field); \ |
1da177e4c
|
553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 |
return count; \ } \ static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); /* Currently we don't export bit fields, but we might in future, * so leave this code in */ #if 0 /* * sdev_rd_attr: create a function and attribute variable for a * read/write bit field. */ #define sdev_rw_attr_bit(field) \ sdev_show_function(field, "%d ") \ \ static ssize_t \ |
ee959b00c
|
569 570 |
sdev_store_##field (struct device *dev, struct device_attribute *attr, \ const char *buf, size_t count) \ |
1da177e4c
|
571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 |
{ \ int ret; \ struct scsi_device *sdev; \ ret = scsi_sdev_check_buf_bit(buf); \ if (ret >= 0) { \ sdev = to_scsi_device(dev); \ sdev->field = ret; \ ret = count; \ } \ return ret; \ } \ static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); /* * scsi_sdev_check_buf_bit: return 0 if buf is "0", return 1 if buf is "1", * else return -EINVAL. */ static int scsi_sdev_check_buf_bit(const char *buf) { if ((buf[1] == '\0') || ((buf[1] == ' ') && (buf[2] == '\0'))) { if (buf[0] == '1') return 1; else if (buf[0] == '0') return 0; else return -EINVAL; } else return -EINVAL; } #endif /* * Create the actual show/store functions and data structures. */ |
1da177e4c
|
605 606 607 608 609 610 611 612 613 614 |
sdev_rd_attr (type, "%d "); sdev_rd_attr (scsi_level, "%d "); sdev_rd_attr (vendor, "%.8s "); sdev_rd_attr (model, "%.16s "); sdev_rd_attr (rev, "%.4s "); |
71e75c97f
|
615 616 617 618 619 620 621 622 623 |
static ssize_t sdev_show_device_busy(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(dev); return snprintf(buf, 20, "%d ", atomic_read(&sdev->device_busy)); } static DEVICE_ATTR(device_busy, S_IRUGO, sdev_show_device_busy, NULL); |
cd9070c9c
|
624 625 626 627 628 629 630 631 632 |
static ssize_t sdev_show_device_blocked(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(dev); return snprintf(buf, 20, "%d ", atomic_read(&sdev->device_blocked)); } static DEVICE_ATTR(device_blocked, S_IRUGO, sdev_show_device_blocked, NULL); |
242f9dcb8
|
633 634 635 |
/* * TODO: can we make these symlinks to the block layer ones? */ |
1da177e4c
|
636 |
static ssize_t |
10523b3b8
|
637 |
sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c
|
638 639 640 |
{ struct scsi_device *sdev; sdev = to_scsi_device(dev); |
242f9dcb8
|
641 642 |
return snprintf(buf, 20, "%d ", sdev->request_queue->rq_timeout / HZ); |
1da177e4c
|
643 644 645 |
} static ssize_t |
ee959b00c
|
646 647 |
sdev_store_timeout (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c
|
648 649 650 651 652 653 |
{ struct scsi_device *sdev; int timeout; sdev = to_scsi_device(dev); sscanf (buf, "%d ", &timeout); |
242f9dcb8
|
654 |
blk_queue_rq_timeout(sdev->request_queue, timeout * HZ); |
1da177e4c
|
655 656 657 658 659 |
return count; } static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout); static ssize_t |
0816c9251
|
660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 |
sdev_show_eh_timeout(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev; sdev = to_scsi_device(dev); return snprintf(buf, 20, "%u ", sdev->eh_timeout / HZ); } static ssize_t sdev_store_eh_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct scsi_device *sdev; unsigned int eh_timeout; int err; if (!capable(CAP_SYS_ADMIN)) return -EACCES; sdev = to_scsi_device(dev); err = kstrtouint(buf, 10, &eh_timeout); if (err) return err; sdev->eh_timeout = eh_timeout * HZ; return count; } static DEVICE_ATTR(eh_timeout, S_IRUGO | S_IWUSR, sdev_show_eh_timeout, sdev_store_eh_timeout); static ssize_t |
ee959b00c
|
690 691 |
store_rescan_field (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c
|
692 693 694 695 696 |
{ scsi_rescan_device(dev); return count; } static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field); |
ee959b00c
|
697 698 699 |
static ssize_t sdev_store_delete(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c
|
700 |
{ |
ac0ece917
|
701 702 |
if (device_remove_file_self(dev, attr)) scsi_remove_device(to_scsi_device(dev)); |
1da177e4c
|
703 704 705 706 707 |
return count; }; static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete); static ssize_t |
ee959b00c
|
708 709 |
store_state_field(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c
|
710 711 712 713 |
{ int i; struct scsi_device *sdev = to_scsi_device(dev); enum scsi_device_state state = 0; |
6391a1137
|
714 |
for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4c
|
715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 |
const int len = strlen(sdev_states[i].name); if (strncmp(sdev_states[i].name, buf, len) == 0 && buf[len] == ' ') { state = sdev_states[i].value; break; } } if (!state) return -EINVAL; if (scsi_device_set_state(sdev, state)) return -EINVAL; return count; } static ssize_t |
10523b3b8
|
732 |
show_state_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c
|
733 734 735 736 737 738 739 740 741 742 743 744 745 746 |
{ struct scsi_device *sdev = to_scsi_device(dev); const char *name = scsi_device_state_name(sdev->sdev_state); if (!name) return -EINVAL; return snprintf(buf, 20, "%s ", name); } static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field); static ssize_t |
ee959b00c
|
747 748 |
show_queue_type_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c
|
749 750 751 |
{ struct scsi_device *sdev = to_scsi_device(dev); const char *name = "none"; |
609aa22f3
|
752 |
if (sdev->simple_tags) |
1da177e4c
|
753 754 755 756 757 |
name = "simple"; return snprintf(buf, 20, "%s ", name); } |
276b20d09
|
758 759 760 761 762 |
static ssize_t store_queue_type_field(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct scsi_device *sdev = to_scsi_device(dev); |
276b20d09
|
763 |
|
efc3c1df5
|
764 |
if (!sdev->tagged_supported) |
276b20d09
|
765 |
return -EINVAL; |
efc3c1df5
|
766 767 768 |
sdev_printk(KERN_INFO, sdev, "ignoring write to deprecated queue_type attribute"); |
276b20d09
|
769 770 771 772 773 |
return count; } static DEVICE_ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field, store_queue_type_field); |
1da177e4c
|
774 |
|
b3ae8780b
|
775 776 777 778 779 780 781 782 |
#define sdev_vpd_pg_attr(_page) \ static ssize_t \ show_vpd_##_page(struct file *filp, struct kobject *kobj, \ struct bin_attribute *bin_attr, \ char *buf, loff_t off, size_t count) \ { \ struct device *dev = container_of(kobj, struct device, kobj); \ struct scsi_device *sdev = to_scsi_device(dev); \ |
09e2b0b14
|
783 |
int ret; \ |
b3ae8780b
|
784 785 |
if (!sdev->vpd_##_page) \ return -EINVAL; \ |
09e2b0b14
|
786 787 788 |
rcu_read_lock(); \ ret = memory_read_from_buffer(buf, count, &off, \ rcu_dereference(sdev->vpd_##_page), \ |
b3ae8780b
|
789 |
sdev->vpd_##_page##_len); \ |
09e2b0b14
|
790 791 |
rcu_read_unlock(); \ return ret; \ |
b3ae8780b
|
792 793 794 795 796 797 798 799 800 |
} \ static struct bin_attribute dev_attr_vpd_##_page = { \ .attr = {.name = __stringify(vpd_##_page), .mode = S_IRUGO }, \ .size = 0, \ .read = show_vpd_##_page, \ }; sdev_vpd_pg_attr(pg83); sdev_vpd_pg_attr(pg80); |
1da177e4c
|
801 |
|
92e6246c8
|
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 |
static ssize_t show_inquiry(struct file *filep, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { struct device *dev = container_of(kobj, struct device, kobj); struct scsi_device *sdev = to_scsi_device(dev); if (!sdev->inquiry) return -EINVAL; return memory_read_from_buffer(buf, count, &off, sdev->inquiry, sdev->inquiry_len); } static struct bin_attribute dev_attr_inquiry = { .attr = { .name = "inquiry", .mode = S_IRUGO, }, .size = 0, .read = show_inquiry, }; |
1da177e4c
|
824 |
static ssize_t |
b3ae8780b
|
825 826 |
show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c
|
827 828 829 830 831 832 833 834 835 |
{ return snprintf(buf, 20, "%d ", (int)sizeof(atomic_t) * 8); } static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL); #define show_sdev_iostat(field) \ static ssize_t \ |
ee959b00c
|
836 837 |
show_iostat_##field(struct device *dev, struct device_attribute *attr, \ char *buf) \ |
1da177e4c
|
838 839 840 841 842 843 844 845 846 847 848 |
{ \ struct scsi_device *sdev = to_scsi_device(dev); \ unsigned long long count = atomic_read(&sdev->field); \ return snprintf(buf, 20, "0x%llx ", count); \ } \ static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL) show_sdev_iostat(iorequest_cnt); show_sdev_iostat(iodone_cnt); show_sdev_iostat(ioerr_cnt); |
d7b8bcb0a
|
849 850 851 852 853 854 855 856 857 |
static ssize_t sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev; sdev = to_scsi_device(dev); return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT " ", sdev->type); } static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL); |
1da177e4c
|
858 |
|
a341cd0f6
|
859 860 861 |
#define DECLARE_EVT_SHOW(name, Cap_name) \ static ssize_t \ sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \ |
ee959b00c
|
862 |
char *buf) \ |
a341cd0f6
|
863 864 865 866 867 868 869 870 871 |
{ \ struct scsi_device *sdev = to_scsi_device(dev); \ int val = test_bit(SDEV_EVT_##Cap_name, sdev->supported_events);\ return snprintf(buf, 20, "%d ", val); \ } #define DECLARE_EVT_STORE(name, Cap_name) \ static ssize_t \ |
ee959b00c
|
872 |
sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\ |
a341cd0f6
|
873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 |
const char *buf, size_t count) \ { \ struct scsi_device *sdev = to_scsi_device(dev); \ int val = simple_strtoul(buf, NULL, 0); \ if (val == 0) \ clear_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ else if (val == 1) \ set_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ else \ return -EINVAL; \ return count; \ } #define DECLARE_EVT(name, Cap_name) \ DECLARE_EVT_SHOW(name, Cap_name) \ DECLARE_EVT_STORE(name, Cap_name) \ static DEVICE_ATTR(evt_##name, S_IRUGO, sdev_show_evt_##name, \ sdev_store_evt_##name); #define REF_EVT(name) &dev_attr_evt_##name.attr DECLARE_EVT(media_change, MEDIA_CHANGE) |
279afdfe7
|
894 895 896 897 898 |
DECLARE_EVT(inquiry_change_reported, INQUIRY_CHANGE_REPORTED) DECLARE_EVT(capacity_change_reported, CAPACITY_CHANGE_REPORTED) DECLARE_EVT(soft_threshold_reached, SOFT_THRESHOLD_REACHED_REPORTED) DECLARE_EVT(mode_parameter_change_reported, MODE_PARAMETER_CHANGE_REPORTED) DECLARE_EVT(lun_change_reported, LUN_CHANGE_REPORTED) |
a341cd0f6
|
899 |
|
ee959b00c
|
900 |
static ssize_t |
276b20d09
|
901 902 |
sdev_store_queue_depth(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c
|
903 904 905 906 907 908 909 910 911 |
{ int depth, retval; struct scsi_device *sdev = to_scsi_device(dev); struct scsi_host_template *sht = sdev->host->hostt; if (!sht->change_queue_depth) return -EINVAL; depth = simple_strtoul(buf, NULL, 0); |
1278dd680
|
912 |
if (depth < 1 || depth > sdev->host->can_queue) |
1da177e4c
|
913 |
return -EINVAL; |
db5ed4dfd
|
914 |
retval = sht->change_queue_depth(sdev, depth); |
1da177e4c
|
915 916 |
if (retval < 0) return retval; |
4a84067db
|
917 |
sdev->max_queue_depth = sdev->queue_depth; |
1da177e4c
|
918 919 |
return count; } |
276b20d09
|
920 921 |
sdev_show_function(queue_depth, "%d "); |
1da177e4c
|
922 |
|
276b20d09
|
923 924 |
static DEVICE_ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth, sdev_store_queue_depth); |
1da177e4c
|
925 |
|
248d4fe95
|
926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 |
static ssize_t sdev_show_wwid(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(dev); ssize_t count; count = scsi_vpd_lun_id(sdev, buf, PAGE_SIZE); if (count > 0) { buf[count] = ' '; count++; } return count; } static DEVICE_ATTR(wwid, S_IRUGO, sdev_show_wwid, NULL); |
41f95dd2e
|
942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 |
#ifdef CONFIG_SCSI_DH static ssize_t sdev_show_dh_state(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(dev); if (!sdev->handler) return snprintf(buf, 20, "detached "); return snprintf(buf, 20, "%s ", sdev->handler->name); } static ssize_t sdev_store_dh_state(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct scsi_device *sdev = to_scsi_device(dev); int err = -EINVAL; if (sdev->sdev_state == SDEV_CANCEL || sdev->sdev_state == SDEV_DEL) return -ENODEV; if (!sdev->handler) { /* * Attach to a device handler */ err = scsi_dh_attach(sdev->request_queue, buf); } else if (!strncmp(buf, "activate", 8)) { /* * Activate a device handler */ if (sdev->handler->activate) err = sdev->handler->activate(sdev, NULL, NULL); else err = 0; } else if (!strncmp(buf, "detach", 6)) { /* * Detach from a device handler */ sdev_printk(KERN_WARNING, sdev, "can't detach handler %s. ", sdev->handler->name); err = -EINVAL; } return err < 0 ? err : count; } static DEVICE_ATTR(dh_state, S_IRUGO | S_IWUSR, sdev_show_dh_state, sdev_store_dh_state); |
77c9df964
|
997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 |
static ssize_t sdev_show_access_state(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(dev); unsigned char access_state; const char *access_state_name; if (!sdev->handler) return -EINVAL; access_state = (sdev->access_state & SCSI_ACCESS_STATE_MASK); access_state_name = scsi_access_state_name(access_state); return sprintf(buf, "%s ", access_state_name ? access_state_name : "unknown"); } static DEVICE_ATTR(access_state, S_IRUGO, sdev_show_access_state, NULL); static ssize_t sdev_show_preferred_path(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(dev); if (!sdev->handler) return -EINVAL; if (sdev->access_state & SCSI_ACCESS_STATE_PREFERRED) return sprintf(buf, "1 "); else return sprintf(buf, "0 "); } static DEVICE_ATTR(preferred_path, S_IRUGO, sdev_show_preferred_path, NULL); |
41f95dd2e
|
1037 |
#endif |
ee959b00c
|
1038 |
static ssize_t |
4a84067db
|
1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 |
sdev_show_queue_ramp_up_period(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev; sdev = to_scsi_device(dev); return snprintf(buf, 20, "%u ", jiffies_to_msecs(sdev->queue_ramp_up_period)); } static ssize_t sdev_store_queue_ramp_up_period(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct scsi_device *sdev = to_scsi_device(dev); |
f7c65af51
|
1056 |
unsigned int period; |
4a84067db
|
1057 |
|
f7c65af51
|
1058 |
if (kstrtouint(buf, 10, &period)) |
4a84067db
|
1059 1060 1061 |
return -EINVAL; sdev->queue_ramp_up_period = msecs_to_jiffies(period); |
5cb9b40d6
|
1062 |
return count; |
4a84067db
|
1063 |
} |
276b20d09
|
1064 1065 1066 |
static DEVICE_ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR, sdev_show_queue_ramp_up_period, sdev_store_queue_ramp_up_period); |
4a84067db
|
1067 |
|
276b20d09
|
1068 1069 |
static umode_t scsi_sdev_attr_is_visible(struct kobject *kobj, struct attribute *attr, int i) |
1da177e4c
|
1070 |
{ |
276b20d09
|
1071 |
struct device *dev = container_of(kobj, struct device, kobj); |
1da177e4c
|
1072 |
struct scsi_device *sdev = to_scsi_device(dev); |
1da177e4c
|
1073 |
|
1da177e4c
|
1074 |
|
276b20d09
|
1075 1076 1077 |
if (attr == &dev_attr_queue_depth.attr && !sdev->host->hostt->change_queue_depth) return S_IRUGO; |
1da177e4c
|
1078 |
|
276b20d09
|
1079 1080 1081 |
if (attr == &dev_attr_queue_ramp_up_period.attr && !sdev->host->hostt->change_queue_depth) return 0; |
1da177e4c
|
1082 |
|
77c9df964
|
1083 1084 1085 1086 1087 1088 1089 1090 |
#ifdef CONFIG_SCSI_DH if (attr == &dev_attr_access_state.attr && !sdev->handler) return 0; if (attr == &dev_attr_preferred_path.attr && !sdev->handler) return 0; #endif |
276b20d09
|
1091 |
return attr->mode; |
1da177e4c
|
1092 |
} |
7e47976bc
|
1093 1094 1095 1096 1097 1098 1099 1100 1101 |
static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj, struct bin_attribute *attr, int i) { struct device *dev = container_of(kobj, struct device, kobj); struct scsi_device *sdev = to_scsi_device(dev); if (attr == &dev_attr_vpd_pg80 && !sdev->vpd_pg80) return 0; |
688875826
|
1102 |
if (attr == &dev_attr_vpd_pg83 && !sdev->vpd_pg83) |
7e47976bc
|
1103 1104 1105 1106 |
return 0; return S_IRUGO; } |
276b20d09
|
1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 |
/* Default template for device attributes. May NOT be modified */ static struct attribute *scsi_sdev_attrs[] = { &dev_attr_device_blocked.attr, &dev_attr_type.attr, &dev_attr_scsi_level.attr, &dev_attr_device_busy.attr, &dev_attr_vendor.attr, &dev_attr_model.attr, &dev_attr_rev.attr, &dev_attr_rescan.attr, &dev_attr_delete.attr, &dev_attr_state.attr, &dev_attr_timeout.attr, &dev_attr_eh_timeout.attr, &dev_attr_iocounterbits.attr, &dev_attr_iorequest_cnt.attr, &dev_attr_iodone_cnt.attr, &dev_attr_ioerr_cnt.attr, &dev_attr_modalias.attr, &dev_attr_queue_depth.attr, &dev_attr_queue_type.attr, |
248d4fe95
|
1128 |
&dev_attr_wwid.attr, |
41f95dd2e
|
1129 1130 |
#ifdef CONFIG_SCSI_DH &dev_attr_dh_state.attr, |
77c9df964
|
1131 1132 |
&dev_attr_access_state.attr, &dev_attr_preferred_path.attr, |
41f95dd2e
|
1133 |
#endif |
276b20d09
|
1134 1135 1136 1137 1138 1139 1140 1141 1142 |
&dev_attr_queue_ramp_up_period.attr, REF_EVT(media_change), REF_EVT(inquiry_change_reported), REF_EVT(capacity_change_reported), REF_EVT(soft_threshold_reached), REF_EVT(mode_parameter_change_reported), REF_EVT(lun_change_reported), NULL }; |
b3ae8780b
|
1143 1144 1145 |
static struct bin_attribute *scsi_sdev_bin_attrs[] = { &dev_attr_vpd_pg83, &dev_attr_vpd_pg80, |
92e6246c8
|
1146 |
&dev_attr_inquiry, |
b3ae8780b
|
1147 1148 |
NULL }; |
276b20d09
|
1149 1150 |
static struct attribute_group scsi_sdev_attr_group = { .attrs = scsi_sdev_attrs, |
b3ae8780b
|
1151 |
.bin_attrs = scsi_sdev_bin_attrs, |
276b20d09
|
1152 |
.is_visible = scsi_sdev_attr_is_visible, |
7e47976bc
|
1153 |
.is_bin_visible = scsi_sdev_bin_attr_is_visible, |
276b20d09
|
1154 1155 1156 1157 1158 1159 |
}; static const struct attribute_group *scsi_sdev_attr_groups[] = { &scsi_sdev_attr_group, NULL }; |
643eb2d93
|
1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 |
static int scsi_target_add(struct scsi_target *starget) { int error; if (starget->state != STARGET_CREATED) return 0; error = device_add(&starget->dev); if (error) { dev_err(&starget->dev, "target device_add failed, error %d ", error); |
643eb2d93
|
1171 1172 1173 1174 |
return error; } transport_add_device(&starget->dev); starget->state = STARGET_RUNNING; |
bc4f24014
|
1175 1176 1177 |
pm_runtime_set_active(&starget->dev); pm_runtime_enable(&starget->dev); device_enable_async_suspend(&starget->dev); |
643eb2d93
|
1178 1179 |
return 0; } |
1da177e4c
|
1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 |
/** * scsi_sysfs_add_sdev - add scsi device to sysfs * @sdev: scsi_device to add * * Return value: * 0 on Success / non-zero on Failure **/ int scsi_sysfs_add_sdev(struct scsi_device *sdev) { int error, i; |
80ed71ce1
|
1190 |
struct request_queue *rq = sdev->request_queue; |
643eb2d93
|
1191 |
struct scsi_target *starget = sdev->sdev_target; |
1da177e4c
|
1192 |
|
ee37e09d8
|
1193 1194 |
error = scsi_device_set_state(sdev, SDEV_RUNNING); if (error) |
1da177e4c
|
1195 |
return error; |
643eb2d93
|
1196 1197 1198 1199 1200 |
error = scsi_target_add(starget); if (error) return error; transport_configure_device(&starget->dev); |
bc4f24014
|
1201 |
|
4cb077d93
|
1202 |
device_enable_async_suspend(&sdev->sdev_gendev); |
bc4f24014
|
1203 1204 1205 1206 1207 |
scsi_autopm_get_target(starget); pm_runtime_set_active(&sdev->sdev_gendev); pm_runtime_forbid(&sdev->sdev_gendev); pm_runtime_enable(&sdev->sdev_gendev); scsi_autopm_put_target(starget); |
bc4f24014
|
1208 |
scsi_autopm_get_device(sdev); |
086b91d05
|
1209 |
error = scsi_dh_add_device(sdev); |
221255aee
|
1210 1211 1212 1213 |
if (error) /* * device_handler is optional, so any error can be ignored */ |
086b91d05
|
1214 1215 1216 |
sdev_printk(KERN_INFO, sdev, "failed to add device handler: %d ", error); |
086b91d05
|
1217 |
|
4cd2459c0
|
1218 1219 1220 1221 1222 1223 1224 1225 |
error = device_add(&sdev->sdev_gendev); if (error) { sdev_printk(KERN_INFO, sdev, "failed to add device: %d ", error); scsi_dh_remove_device(sdev); return error; } |
4cb077d93
|
1226 |
device_enable_async_suspend(&sdev->sdev_dev); |
ee959b00c
|
1227 |
error = device_add(&sdev->sdev_dev); |
1da177e4c
|
1228 |
if (error) { |
73d8c34f3
|
1229 1230 1231 |
sdev_printk(KERN_INFO, sdev, "failed to add class device: %d ", error); |
086b91d05
|
1232 |
scsi_dh_remove_device(sdev); |
860dc7360
|
1233 |
device_del(&sdev->sdev_gendev); |
ee37e09d8
|
1234 |
return error; |
1da177e4c
|
1235 |
} |
860dc7360
|
1236 1237 |
transport_add_device(&sdev->sdev_gendev); sdev->is_visible = 1; |
1da177e4c
|
1238 |
|
97f46ae45
|
1239 |
error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL); |
80ed71ce1
|
1240 1241 |
if (error) |
860dc7360
|
1242 1243 |
/* we're treating error on bsg register as non-fatal, * so pretend nothing went wrong */ |
80ed71ce1
|
1244 1245 1246 |
sdev_printk(KERN_INFO, sdev, "Failed to register bsg queue, errno=%d ", error); |
bfd129445
|
1247 |
/* add additional host specific attributes */ |
1da177e4c
|
1248 1249 |
if (sdev->host->hostt->sdev_attrs) { for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) { |
bfd129445
|
1250 |
error = device_create_file(&sdev->sdev_gendev, |
1da177e4c
|
1251 |
sdev->host->hostt->sdev_attrs[i]); |
860dc7360
|
1252 |
if (error) |
ee37e09d8
|
1253 |
return error; |
1da177e4c
|
1254 1255 |
} } |
1da177e4c
|
1256 |
|
6fe8c1dbe
|
1257 |
scsi_autopm_put_device(sdev); |
1da177e4c
|
1258 1259 |
return error; } |
903f4fed8
|
1260 |
void __scsi_remove_device(struct scsi_device *sdev) |
1da177e4c
|
1261 |
{ |
df133c212
|
1262 |
struct device *dev = &sdev->sdev_gendev; |
be821fd8e
|
1263 1264 1265 1266 1267 1268 1269 |
/* * This cleanup path is not reentrant and while it is impossible * to get a new reference with scsi_device_get() someone can still * hold a previously acquired one. */ if (sdev->sdev_state == SDEV_DEL) return; |
860dc7360
|
1270 1271 1272 |
if (sdev->is_visible) { if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0) return; |
1da177e4c
|
1273 |
|
860dc7360
|
1274 1275 1276 |
bsg_unregister_queue(sdev->request_queue); device_unregister(&sdev->sdev_dev); transport_remove_device(dev); |
086b91d05
|
1277 |
scsi_dh_remove_device(sdev); |
e619e6cbe
|
1278 1279 1280 |
device_del(dev); } else put_device(&sdev->sdev_dev); |
b485462ac
|
1281 1282 1283 1284 1285 1286 |
/* * Stop accepting new requests and wait until all queuecommand() and * scsi_run_queue() invocations have finished before tearing down the * device. */ |
1da177e4c
|
1287 |
scsi_device_set_state(sdev, SDEV_DEL); |
b485462ac
|
1288 1289 |
blk_cleanup_queue(sdev->request_queue); cancel_work_sync(&sdev->requeue_work); |
1da177e4c
|
1290 1291 |
if (sdev->host->hostt->slave_destroy) sdev->host->hostt->slave_destroy(sdev); |
df133c212
|
1292 |
transport_destroy_device(dev); |
86cbfb560
|
1293 |
|
e63ed0d7a
|
1294 1295 1296 1297 1298 1299 |
/* * Paired with the kref_get() in scsi_sysfs_initialize(). We have * remoed sysfs visibility from the device, so make the target * invisible if this was the last device underneath it. */ scsi_target_reap(scsi_target(sdev)); |
df133c212
|
1300 |
put_device(dev); |
903f4fed8
|
1301 1302 1303 1304 1305 1306 1307 1308 |
} /** * scsi_remove_device - unregister a device from the scsi bus * @sdev: scsi_device to unregister **/ void scsi_remove_device(struct scsi_device *sdev) { |
541950027
|
1309 |
struct Scsi_Host *shost = sdev->host; |
0b9506723
|
1310 |
mutex_lock(&shost->scan_mutex); |
903f4fed8
|
1311 |
__scsi_remove_device(sdev); |
0b9506723
|
1312 |
mutex_unlock(&shost->scan_mutex); |
1da177e4c
|
1313 1314 |
} EXPORT_SYMBOL(scsi_remove_device); |
44818efba
|
1315 |
static void __scsi_remove_target(struct scsi_target *starget) |
1da177e4c
|
1316 1317 1318 |
{ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); unsigned long flags; |
a64358db1
|
1319 |
struct scsi_device *sdev; |
1da177e4c
|
1320 1321 |
spin_lock_irqsave(shost->host_lock, flags); |
a64358db1
|
1322 1323 |
restart: list_for_each_entry(sdev, &shost->__devices, siblings) { |
1da177e4c
|
1324 |
if (sdev->channel != starget->channel || |
a64358db1
|
1325 |
sdev->id != starget->id || |
546ae796b
|
1326 |
scsi_device_get(sdev)) |
1da177e4c
|
1327 1328 1329 |
continue; spin_unlock_irqrestore(shost->host_lock, flags); scsi_remove_device(sdev); |
546ae796b
|
1330 |
scsi_device_put(sdev); |
1da177e4c
|
1331 |
spin_lock_irqsave(shost->host_lock, flags); |
a64358db1
|
1332 |
goto restart; |
1da177e4c
|
1333 1334 |
} spin_unlock_irqrestore(shost->host_lock, flags); |
20b1e6742
|
1335 |
} |
1da177e4c
|
1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 |
/** * scsi_remove_target - try to remove a target and all its devices * @dev: generic starget or parent of generic stargets to be removed * * Note: This is slightly racy. It is possible that if the user * requests the addition of another device then the target won't be * removed. */ void scsi_remove_target(struct device *dev) { |
3b661a92e
|
1346 |
struct Scsi_Host *shost = dev_to_shost(dev->parent); |
305c2e71b
|
1347 |
struct scsi_target *starget; |
3b661a92e
|
1348 |
unsigned long flags; |
409981935
|
1349 |
restart: |
3b661a92e
|
1350 1351 |
spin_lock_irqsave(shost->host_lock, flags); list_for_each_entry(starget, &shost->__targets, siblings) { |
90a88d6ef
|
1352 |
if (starget->state == STARGET_DEL || |
305c2e71b
|
1353 |
starget->state == STARGET_REMOVE) |
3b661a92e
|
1354 1355 |
continue; if (starget->dev.parent == dev || &starget->dev == dev) { |
e63ed0d7a
|
1356 |
kref_get(&starget->reap_ref); |
f05795d3d
|
1357 |
starget->state = STARGET_REMOVE; |
bc3f02a79
|
1358 |
spin_unlock_irqrestore(shost->host_lock, flags); |
bc3f02a79
|
1359 |
__scsi_remove_target(starget); |
409981935
|
1360 1361 |
scsi_target_reap(starget); goto restart; |
3b661a92e
|
1362 |
} |
1da177e4c
|
1363 |
} |
3b661a92e
|
1364 |
spin_unlock_irqrestore(shost->host_lock, flags); |
1da177e4c
|
1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 |
} EXPORT_SYMBOL(scsi_remove_target); int scsi_register_driver(struct device_driver *drv) { drv->bus = &scsi_bus_type; return driver_register(drv); } EXPORT_SYMBOL(scsi_register_driver); int scsi_register_interface(struct class_interface *intf) { intf->class = &sdev_class; return class_interface_register(intf); } EXPORT_SYMBOL(scsi_register_interface); |
1da177e4c
|
1383 1384 1385 |
/** * scsi_sysfs_add_host - add scsi host to subsystem * @shost: scsi host struct to add to subsystem |
1da177e4c
|
1386 1387 1388 1389 |
**/ int scsi_sysfs_add_host(struct Scsi_Host *shost) { int error, i; |
f7120a4f7
|
1390 |
/* add host specific attributes */ |
1da177e4c
|
1391 1392 |
if (shost->hostt->shost_attrs) { for (i = 0; shost->hostt->shost_attrs[i]; i++) { |
ee959b00c
|
1393 |
error = device_create_file(&shost->shost_dev, |
f7120a4f7
|
1394 |
shost->hostt->shost_attrs[i]); |
1da177e4c
|
1395 1396 1397 1398 1399 1400 |
if (error) return error; } } transport_register_device(&shost->shost_gendev); |
d52b3815a
|
1401 |
transport_configure_device(&shost->shost_gendev); |
1da177e4c
|
1402 1403 |
return 0; } |
bfd129445
|
1404 1405 1406 1407 1408 |
static struct device_type scsi_dev_type = { .name = "scsi_device", .release = scsi_device_dev_release, .groups = scsi_sdev_attr_groups, }; |
1da177e4c
|
1409 1410 1411 1412 1413 1414 1415 1416 |
void scsi_sysfs_device_initialize(struct scsi_device *sdev) { unsigned long flags; struct Scsi_Host *shost = sdev->host; struct scsi_target *starget = sdev->sdev_target; device_initialize(&sdev->sdev_gendev); sdev->sdev_gendev.bus = &scsi_bus_type; |
bfd129445
|
1417 |
sdev->sdev_gendev.type = &scsi_dev_type; |
9cb78c16f
|
1418 |
dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%llu", |
71610f55f
|
1419 |
sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); |
ee959b00c
|
1420 |
device_initialize(&sdev->sdev_dev); |
37e6ba007
|
1421 |
sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev); |
ee959b00c
|
1422 |
sdev->sdev_dev.class = &sdev_class; |
9cb78c16f
|
1423 |
dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%llu", |
71610f55f
|
1424 |
sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); |
50c4e9641
|
1425 1426 1427 1428 1429 1430 1431 |
/* * Get a default scsi_level from the target (derived from sibling * devices). This is the best we can do for guessing how to set * sdev->lun_in_cdb for the initial INQUIRY command. For LUN 0 the * setting doesn't matter, because all the bits are zero anyway. * But it does matter for higher LUNs. */ |
7c9d6f16f
|
1432 |
sdev->scsi_level = starget->scsi_level; |
50c4e9641
|
1433 1434 1435 1436 |
if (sdev->scsi_level <= SCSI_2 && sdev->scsi_level != SCSI_UNKNOWN && !shost->no_scsi2_lun_in_cdb) sdev->lun_in_cdb = 1; |
1da177e4c
|
1437 1438 1439 1440 1441 |
transport_setup_device(&sdev->sdev_gendev); spin_lock_irqsave(shost->host_lock, flags); list_add_tail(&sdev->same_target_siblings, &starget->devices); list_add_tail(&sdev->siblings, &shost->__devices); spin_unlock_irqrestore(shost->host_lock, flags); |
e63ed0d7a
|
1442 1443 1444 1445 1446 1447 |
/* * device can now only be removed via __scsi_remove_device() so hold * the target. Target will be held in CREATED state until something * beneath it becomes visible (in which case it moves to RUNNING) */ kref_get(&starget->reap_ref); |
1da177e4c
|
1448 1449 1450 1451 |
} int scsi_is_sdev_device(const struct device *dev) { |
13ba9bcbf
|
1452 |
return dev->type == &scsi_dev_type; |
1da177e4c
|
1453 1454 1455 1456 1457 1458 |
} EXPORT_SYMBOL(scsi_is_sdev_device); /* A blank transport template that is used in drivers that don't * yet implement Transport Attributes */ struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, }; |