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drivers/scsi/scsi_sysfs.c
39.7 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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|
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static int check_set(unsigned long long *val, char *src) |
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{ char *last; |
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if (strcmp(src, "-") == 0) { |
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*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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|
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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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|
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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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|
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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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|
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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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|
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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); |
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else ret = -EOPNOTSUPP; |
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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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|
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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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struct scsi_vpd *vpd_pg80 = NULL, *vpd_pg83 = NULL; |
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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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|
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mutex_lock(&sdev->inquiry_mutex); rcu_swap_protected(sdev->vpd_pg80, vpd_pg80, lockdep_is_held(&sdev->inquiry_mutex)); rcu_swap_protected(sdev->vpd_pg83, vpd_pg83, lockdep_is_held(&sdev->inquiry_mutex)); mutex_unlock(&sdev->inquiry_mutex); if (vpd_pg83) kfree_rcu(vpd_pg83, rcu); if (vpd_pg80) kfree_rcu(vpd_pg80, rcu); |
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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", |
ee959b00c SCSI: convert str... |
469 |
.dev_release = scsi_device_cls_release, |
1da177e4c Linux-2.6.12-rc2 |
470 471 472 473 474 |
}; /* all probing is done in the individual ->probe routines */ static int scsi_bus_match(struct device *dev, struct device_driver *gendrv) { |
b0ed43360 [SCSI] add scsi_h... |
475 476 477 478 479 480 |
struct scsi_device *sdp; if (dev->type != &scsi_dev_type) return 0; sdp = to_scsi_device(dev); |
1da177e4c Linux-2.6.12-rc2 |
481 482 483 484 |
if (sdp->no_uld_attach) return 0; return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0; } |
7eff2e7a8 Driver core: chan... |
485 |
static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
d7b8bcb0a [SCSI] modalias f... |
486 |
{ |
1f42ea7bc [SCSI] fix interm... |
487 488 489 490 491 492 |
struct scsi_device *sdev; if (dev->type != &scsi_dev_type) return 0; sdev = to_scsi_device(dev); |
d7b8bcb0a [SCSI] modalias f... |
493 |
|
7eff2e7a8 Driver core: chan... |
494 |
add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); |
d7b8bcb0a [SCSI] modalias f... |
495 496 |
return 0; } |
1da177e4c Linux-2.6.12-rc2 |
497 498 499 |
struct bus_type scsi_bus_type = { .name = "scsi", .match = scsi_bus_match, |
d7b8bcb0a [SCSI] modalias f... |
500 |
.uevent = scsi_bus_uevent, |
aa3386015 PM: Remove CONFIG... |
501 |
#ifdef CONFIG_PM |
db5bd1e0b [SCSI] convert to... |
502 |
.pm = &scsi_bus_pm_ops, |
e6da54d84 SCSI: remove fake... |
503 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
504 |
}; |
a6a8d9f87 [SCSI] scsi_dh: a... |
505 |
EXPORT_SYMBOL_GPL(scsi_bus_type); |
1da177e4c Linux-2.6.12-rc2 |
506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 |
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 \ |
ee959b00c SCSI: convert str... |
533 534 |
sdev_show_##field (struct device *dev, struct device_attribute *attr, \ char *buf) \ |
1da177e4c Linux-2.6.12-rc2 |
535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 |
{ \ 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); /* |
160e7f671 [SCSI] fix sdev_r... |
551 |
* sdev_rw_attr: create a function and attribute variable for a |
1da177e4c Linux-2.6.12-rc2 |
552 553 554 555 556 557 |
* read/write field. */ #define sdev_rw_attr(field, format_string) \ sdev_show_function(field, format_string) \ \ static ssize_t \ |
ee959b00c SCSI: convert str... |
558 559 |
sdev_store_##field (struct device *dev, struct device_attribute *attr, \ const char *buf, size_t count) \ |
1da177e4c Linux-2.6.12-rc2 |
560 561 562 |
{ \ struct scsi_device *sdev; \ sdev = to_scsi_device(dev); \ |
160e7f671 [SCSI] fix sdev_r... |
563 |
sscanf (buf, format_string, &sdev->field); \ |
1da177e4c Linux-2.6.12-rc2 |
564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 |
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 SCSI: convert str... |
580 581 |
sdev_store_##field (struct device *dev, struct device_attribute *attr, \ const char *buf, size_t count) \ |
1da177e4c Linux-2.6.12-rc2 |
582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 |
{ \ 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 Linux-2.6.12-rc2 |
616 617 618 619 620 621 622 623 624 625 |
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 scsi: convert dev... |
626 627 628 629 630 631 632 633 634 |
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 scsi: fix the {ho... |
635 636 637 638 639 640 641 642 643 |
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 block: unify requ... |
644 645 646 |
/* * TODO: can we make these symlinks to the block layer ones? */ |
1da177e4c Linux-2.6.12-rc2 |
647 |
static ssize_t |
10523b3b8 [PATCH] Driver Co... |
648 |
sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
649 650 651 |
{ struct scsi_device *sdev; sdev = to_scsi_device(dev); |
242f9dcb8 block: unify requ... |
652 653 |
return snprintf(buf, 20, "%d ", sdev->request_queue->rq_timeout / HZ); |
1da177e4c Linux-2.6.12-rc2 |
654 655 656 |
} static ssize_t |
ee959b00c SCSI: convert str... |
657 658 |
sdev_store_timeout (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
659 660 661 662 663 664 |
{ struct scsi_device *sdev; int timeout; sdev = to_scsi_device(dev); sscanf (buf, "%d ", &timeout); |
242f9dcb8 block: unify requ... |
665 |
blk_queue_rq_timeout(sdev->request_queue, timeout * HZ); |
1da177e4c Linux-2.6.12-rc2 |
666 667 668 669 670 |
return count; } static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout); static ssize_t |
0816c9251 [SCSI] Allow erro... |
671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 |
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 SCSI: convert str... |
701 702 |
store_rescan_field (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
703 704 705 706 707 |
{ scsi_rescan_device(dev); return count; } static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field); |
ee959b00c SCSI: convert str... |
708 709 710 |
static ssize_t sdev_store_delete(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
711 |
{ |
5b55b24ce scsi: core: Avoid... |
712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 |
struct kernfs_node *kn; kn = sysfs_break_active_protection(&dev->kobj, &attr->attr); WARN_ON_ONCE(!kn); /* * Concurrent writes into the "delete" sysfs attribute may trigger * concurrent calls to device_remove_file() and scsi_remove_device(). * device_remove_file() handles concurrent removal calls by * serializing these and by ignoring the second and later removal * attempts. Concurrent calls of scsi_remove_device() are * serialized. The second and later calls of scsi_remove_device() are * ignored because the first call of that function changes the device * state into SDEV_DEL. */ device_remove_file(dev, attr); scsi_remove_device(to_scsi_device(dev)); if (kn) sysfs_unbreak_active_protection(kn); |
1da177e4c Linux-2.6.12-rc2 |
730 731 732 733 734 |
return count; }; static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete); static ssize_t |
ee959b00c SCSI: convert str... |
735 736 |
store_state_field(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
737 |
{ |
0db6ca8a5 scsi: Protect SCS... |
738 |
int i, ret; |
1da177e4c Linux-2.6.12-rc2 |
739 740 |
struct scsi_device *sdev = to_scsi_device(dev); enum scsi_device_state state = 0; |
6391a1137 [SCSI] drivers/sc... |
741 |
for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4c Linux-2.6.12-rc2 |
742 743 744 745 746 747 748 749 750 751 |
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; |
0db6ca8a5 scsi: Protect SCS... |
752 753 754 755 756 |
mutex_lock(&sdev->state_mutex); ret = scsi_device_set_state(sdev, state); mutex_unlock(&sdev->state_mutex); return ret == 0 ? count : -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
757 758 759 |
} static ssize_t |
10523b3b8 [PATCH] Driver Co... |
760 |
show_state_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
761 762 763 764 765 766 767 768 769 770 771 772 773 774 |
{ 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 SCSI: convert str... |
775 776 |
show_queue_type_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
777 778 779 |
{ struct scsi_device *sdev = to_scsi_device(dev); const char *name = "none"; |
609aa22f3 scsi: remove orde... |
780 |
if (sdev->simple_tags) |
1da177e4c Linux-2.6.12-rc2 |
781 782 783 784 785 |
name = "simple"; return snprintf(buf, 20, "%s ", name); } |
276b20d09 [SCSI] scsi_sysfs... |
786 787 788 789 790 |
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 [SCSI] scsi_sysfs... |
791 |
|
efc3c1df5 scsi: remove ->ch... |
792 |
if (!sdev->tagged_supported) |
276b20d09 [SCSI] scsi_sysfs... |
793 |
return -EINVAL; |
efc3c1df5 scsi: remove ->ch... |
794 795 796 |
sdev_printk(KERN_INFO, sdev, "ignoring write to deprecated queue_type attribute"); |
276b20d09 [SCSI] scsi_sysfs... |
797 798 799 800 801 |
return count; } static DEVICE_ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field, store_queue_type_field); |
1da177e4c Linux-2.6.12-rc2 |
802 |
|
b3ae8780b [SCSI] Add EVPD p... |
803 804 805 806 807 808 809 810 |
#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); \ |
ccf1e0045 scsi: Rework hand... |
811 812 813 |
struct scsi_vpd *vpd_page; \ int ret = -EINVAL; \ \ |
09e2b0b14 scsi: rescan VPD ... |
814 |
rcu_read_lock(); \ |
ccf1e0045 scsi: Rework hand... |
815 816 817 818 |
vpd_page = rcu_dereference(sdev->vpd_##_page); \ if (vpd_page) \ ret = memory_read_from_buffer(buf, count, &off, \ vpd_page->data, vpd_page->len); \ |
09e2b0b14 scsi: rescan VPD ... |
819 |
rcu_read_unlock(); \ |
ccf1e0045 scsi: Rework hand... |
820 |
return ret; \ |
b3ae8780b [SCSI] Add EVPD p... |
821 822 823 824 825 826 827 828 829 |
} \ 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 Linux-2.6.12-rc2 |
830 |
|
92e6246c8 scsi: Export SCSI... |
831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 |
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 Linux-2.6.12-rc2 |
853 |
static ssize_t |
b3ae8780b [SCSI] Add EVPD p... |
854 855 |
show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
856 857 858 859 860 861 862 863 864 |
{ 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 SCSI: convert str... |
865 866 |
show_iostat_##field(struct device *dev, struct device_attribute *attr, \ char *buf) \ |
1da177e4c Linux-2.6.12-rc2 |
867 868 869 870 871 872 873 874 875 876 877 |
{ \ 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 [SCSI] modalias f... |
878 879 880 881 882 883 884 885 886 |
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 Linux-2.6.12-rc2 |
887 |
|
a341cd0f6 SCSI: add asynchr... |
888 889 890 |
#define DECLARE_EVT_SHOW(name, Cap_name) \ static ssize_t \ sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \ |
ee959b00c SCSI: convert str... |
891 |
char *buf) \ |
a341cd0f6 SCSI: add asynchr... |
892 893 894 895 896 897 898 899 900 |
{ \ 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 SCSI: convert str... |
901 |
sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\ |
a341cd0f6 SCSI: add asynchr... |
902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 |
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 [SCSI] Generate u... |
923 924 925 926 927 |
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 SCSI: add asynchr... |
928 |
|
ee959b00c SCSI: convert str... |
929 |
static ssize_t |
276b20d09 [SCSI] scsi_sysfs... |
930 931 |
sdev_store_queue_depth(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
932 933 934 935 936 937 938 939 940 |
{ 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 scsi: fix host ma... |
941 |
if (depth < 1 || depth > sdev->host->can_queue) |
1da177e4c Linux-2.6.12-rc2 |
942 |
return -EINVAL; |
db5ed4dfd scsi: drop reason... |
943 |
retval = sht->change_queue_depth(sdev, depth); |
1da177e4c Linux-2.6.12-rc2 |
944 945 |
if (retval < 0) return retval; |
4a84067db [SCSI] add queue_... |
946 |
sdev->max_queue_depth = sdev->queue_depth; |
1da177e4c Linux-2.6.12-rc2 |
947 948 |
return count; } |
276b20d09 [SCSI] scsi_sysfs... |
949 950 |
sdev_show_function(queue_depth, "%d "); |
1da177e4c Linux-2.6.12-rc2 |
951 |
|
276b20d09 [SCSI] scsi_sysfs... |
952 953 |
static DEVICE_ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth, sdev_store_queue_depth); |
1da177e4c Linux-2.6.12-rc2 |
954 |
|
248d4fe95 scsi: export 'wwi... |
955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 |
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 scsi_dh: move 'dh... |
971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 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 |
#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 scsi: Add 'access... |
1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 |
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 scsi_dh: move 'dh... |
1066 |
#endif |
ee959b00c SCSI: convert str... |
1067 |
static ssize_t |
4a84067db [SCSI] add queue_... |
1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 |
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 drivers/scsi: rep... |
1085 |
unsigned int period; |
4a84067db [SCSI] add queue_... |
1086 |
|
f7c65af51 drivers/scsi: rep... |
1087 |
if (kstrtouint(buf, 10, &period)) |
4a84067db [SCSI] add queue_... |
1088 1089 1090 |
return -EINVAL; sdev->queue_ramp_up_period = msecs_to_jiffies(period); |
5cb9b40d6 scsi_sysfs: Fix q... |
1091 |
return count; |
4a84067db [SCSI] add queue_... |
1092 |
} |
276b20d09 [SCSI] scsi_sysfs... |
1093 1094 1095 |
static DEVICE_ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR, sdev_show_queue_ramp_up_period, sdev_store_queue_ramp_up_period); |
4a84067db [SCSI] add queue_... |
1096 |
|
276b20d09 [SCSI] scsi_sysfs... |
1097 1098 |
static umode_t scsi_sdev_attr_is_visible(struct kobject *kobj, struct attribute *attr, int i) |
1da177e4c Linux-2.6.12-rc2 |
1099 |
{ |
276b20d09 [SCSI] scsi_sysfs... |
1100 |
struct device *dev = container_of(kobj, struct device, kobj); |
1da177e4c Linux-2.6.12-rc2 |
1101 |
struct scsi_device *sdev = to_scsi_device(dev); |
1da177e4c Linux-2.6.12-rc2 |
1102 |
|
1da177e4c Linux-2.6.12-rc2 |
1103 |
|
276b20d09 [SCSI] scsi_sysfs... |
1104 1105 1106 |
if (attr == &dev_attr_queue_depth.attr && !sdev->host->hostt->change_queue_depth) return S_IRUGO; |
1da177e4c Linux-2.6.12-rc2 |
1107 |
|
276b20d09 [SCSI] scsi_sysfs... |
1108 1109 1110 |
if (attr == &dev_attr_queue_ramp_up_period.attr && !sdev->host->hostt->change_queue_depth) return 0; |
1da177e4c Linux-2.6.12-rc2 |
1111 |
|
77c9df964 scsi: Add 'access... |
1112 1113 1114 1115 1116 1117 1118 1119 |
#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 [SCSI] scsi_sysfs... |
1120 |
return attr->mode; |
1da177e4c Linux-2.6.12-rc2 |
1121 |
} |
7e47976bc scsi_sysfs: add '... |
1122 1123 1124 1125 1126 1127 1128 1129 1130 |
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 scsi_sysfs: Fix t... |
1131 |
if (attr == &dev_attr_vpd_pg83 && !sdev->vpd_pg83) |
7e47976bc scsi_sysfs: add '... |
1132 1133 1134 1135 |
return 0; return S_IRUGO; } |
276b20d09 [SCSI] scsi_sysfs... |
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 |
/* 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 scsi: export 'wwi... |
1157 |
&dev_attr_wwid.attr, |
41f95dd2e scsi_dh: move 'dh... |
1158 1159 |
#ifdef CONFIG_SCSI_DH &dev_attr_dh_state.attr, |
77c9df964 scsi: Add 'access... |
1160 1161 |
&dev_attr_access_state.attr, &dev_attr_preferred_path.attr, |
41f95dd2e scsi_dh: move 'dh... |
1162 |
#endif |
276b20d09 [SCSI] scsi_sysfs... |
1163 1164 1165 1166 1167 1168 1169 1170 1171 |
&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 [SCSI] Add EVPD p... |
1172 1173 1174 |
static struct bin_attribute *scsi_sdev_bin_attrs[] = { &dev_attr_vpd_pg83, &dev_attr_vpd_pg80, |
92e6246c8 scsi: Export SCSI... |
1175 |
&dev_attr_inquiry, |
b3ae8780b [SCSI] Add EVPD p... |
1176 1177 |
NULL }; |
276b20d09 [SCSI] scsi_sysfs... |
1178 1179 |
static struct attribute_group scsi_sdev_attr_group = { .attrs = scsi_sdev_attrs, |
b3ae8780b [SCSI] Add EVPD p... |
1180 |
.bin_attrs = scsi_sdev_bin_attrs, |
276b20d09 [SCSI] scsi_sysfs... |
1181 |
.is_visible = scsi_sdev_attr_is_visible, |
7e47976bc scsi_sysfs: add '... |
1182 |
.is_bin_visible = scsi_sdev_bin_attr_is_visible, |
276b20d09 [SCSI] scsi_sysfs... |
1183 1184 1185 1186 1187 1188 |
}; static const struct attribute_group *scsi_sdev_attr_groups[] = { &scsi_sdev_attr_group, NULL }; |
643eb2d93 [SCSI] rework scs... |
1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 |
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 [SCSI] rework scs... |
1200 1201 1202 1203 |
return error; } transport_add_device(&starget->dev); starget->state = STARGET_RUNNING; |
bc4f24014 [SCSI] implement ... |
1204 1205 1206 |
pm_runtime_set_active(&starget->dev); pm_runtime_enable(&starget->dev); device_enable_async_suspend(&starget->dev); |
643eb2d93 [SCSI] rework scs... |
1207 1208 |
return 0; } |
1da177e4c Linux-2.6.12-rc2 |
1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 |
/** * 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 [SCSI] bsg: separ... |
1219 |
struct request_queue *rq = sdev->request_queue; |
643eb2d93 [SCSI] rework scs... |
1220 |
struct scsi_target *starget = sdev->sdev_target; |
1da177e4c Linux-2.6.12-rc2 |
1221 |
|
643eb2d93 [SCSI] rework scs... |
1222 1223 1224 1225 1226 |
error = scsi_target_add(starget); if (error) return error; transport_configure_device(&starget->dev); |
bc4f24014 [SCSI] implement ... |
1227 |
|
4cb077d93 PM: Allow SCSI de... |
1228 |
device_enable_async_suspend(&sdev->sdev_gendev); |
bc4f24014 [SCSI] implement ... |
1229 1230 1231 1232 1233 |
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 [SCSI] implement ... |
1234 |
scsi_autopm_get_device(sdev); |
086b91d05 scsi_dh: integrat... |
1235 |
error = scsi_dh_add_device(sdev); |
221255aee scsi: ignore erro... |
1236 1237 1238 1239 |
if (error) /* * device_handler is optional, so any error can be ignored */ |
086b91d05 scsi_dh: integrat... |
1240 1241 1242 |
sdev_printk(KERN_INFO, sdev, "failed to add device handler: %d ", error); |
086b91d05 scsi_dh: integrat... |
1243 |
|
4cd2459c0 scsi_sysfs: call ... |
1244 1245 1246 1247 1248 1249 1250 1251 |
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 PM: Allow SCSI de... |
1252 |
device_enable_async_suspend(&sdev->sdev_dev); |
ee959b00c SCSI: convert str... |
1253 |
error = device_add(&sdev->sdev_dev); |
1da177e4c Linux-2.6.12-rc2 |
1254 |
if (error) { |
73d8c34f3 SCSI: improve two... |
1255 1256 1257 |
sdev_printk(KERN_INFO, sdev, "failed to add class device: %d ", error); |
086b91d05 scsi_dh: integrat... |
1258 |
scsi_dh_remove_device(sdev); |
860dc7360 [SCSI] fix async ... |
1259 |
device_del(&sdev->sdev_gendev); |
ee37e09d8 [SCSI] fix duplic... |
1260 |
return error; |
1da177e4c Linux-2.6.12-rc2 |
1261 |
} |
860dc7360 [SCSI] fix async ... |
1262 1263 |
transport_add_device(&sdev->sdev_gendev); sdev->is_visible = 1; |
1da177e4c Linux-2.6.12-rc2 |
1264 |
|
97f46ae45 [SCSI] bsg: add r... |
1265 |
error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL); |
80ed71ce1 [SCSI] bsg: separ... |
1266 1267 |
if (error) |
860dc7360 [SCSI] fix async ... |
1268 1269 |
/* we're treating error on bsg register as non-fatal, * so pretend nothing went wrong */ |
80ed71ce1 [SCSI] bsg: separ... |
1270 1271 1272 |
sdev_printk(KERN_INFO, sdev, "Failed to register bsg queue, errno=%d ", error); |
bfd129445 [SCSI] switch sde... |
1273 |
/* add additional host specific attributes */ |
1da177e4c Linux-2.6.12-rc2 |
1274 1275 |
if (sdev->host->hostt->sdev_attrs) { for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) { |
bfd129445 [SCSI] switch sde... |
1276 |
error = device_create_file(&sdev->sdev_gendev, |
1da177e4c Linux-2.6.12-rc2 |
1277 |
sdev->host->hostt->sdev_attrs[i]); |
860dc7360 [SCSI] fix async ... |
1278 |
if (error) |
ee37e09d8 [SCSI] fix duplic... |
1279 |
return error; |
1da177e4c Linux-2.6.12-rc2 |
1280 1281 |
} } |
1da177e4c Linux-2.6.12-rc2 |
1282 |
|
6fe8c1dbe scsi: balance out... |
1283 |
scsi_autopm_put_device(sdev); |
1da177e4c Linux-2.6.12-rc2 |
1284 1285 |
return error; } |
903f4fed8 [SCSI] fix caller... |
1286 |
void __scsi_remove_device(struct scsi_device *sdev) |
1da177e4c Linux-2.6.12-rc2 |
1287 |
{ |
df133c212 [SCSI] Fix transp... |
1288 |
struct device *dev = &sdev->sdev_gendev; |
0db6ca8a5 scsi: Protect SCS... |
1289 |
int res; |
df133c212 [SCSI] Fix transp... |
1290 |
|
be821fd8e scsi_sysfs: prote... |
1291 1292 1293 1294 1295 1296 1297 |
/* * 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 [SCSI] fix async ... |
1298 |
if (sdev->is_visible) { |
0db6ca8a5 scsi: Protect SCS... |
1299 1300 1301 1302 1303 |
/* * If scsi_internal_target_block() is running concurrently, * wait until it has finished before changing the device state. */ mutex_lock(&sdev->state_mutex); |
255ee9320 scsi: Make __scsi... |
1304 1305 1306 1307 1308 |
/* * If blocked, we go straight to DEL and restart the queue so * any commands issued during driver shutdown (like sync * cache) are errored immediately. */ |
0db6ca8a5 scsi: Protect SCS... |
1309 |
res = scsi_device_set_state(sdev, SDEV_CANCEL); |
255ee9320 scsi: Make __scsi... |
1310 1311 1312 1313 1314 |
if (res != 0) { res = scsi_device_set_state(sdev, SDEV_DEL); if (res == 0) scsi_start_queue(sdev); } |
0db6ca8a5 scsi: Protect SCS... |
1315 1316 1317 |
mutex_unlock(&sdev->state_mutex); if (res != 0) |
860dc7360 [SCSI] fix async ... |
1318 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1319 |
|
860dc7360 [SCSI] fix async ... |
1320 1321 1322 |
bsg_unregister_queue(sdev->request_queue); device_unregister(&sdev->sdev_dev); transport_remove_device(dev); |
086b91d05 scsi_dh: integrat... |
1323 |
scsi_dh_remove_device(sdev); |
e619e6cbe Revert "scsi: Fix... |
1324 1325 1326 |
device_del(dev); } else put_device(&sdev->sdev_dev); |
b485462ac [SCSI] Stop accep... |
1327 1328 1329 1330 1331 1332 |
/* * Stop accepting new requests and wait until all queuecommand() and * scsi_run_queue() invocations have finished before tearing down the * device. */ |
0db6ca8a5 scsi: Protect SCS... |
1333 |
mutex_lock(&sdev->state_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1334 |
scsi_device_set_state(sdev, SDEV_DEL); |
0db6ca8a5 scsi: Protect SCS... |
1335 |
mutex_unlock(&sdev->state_mutex); |
b485462ac [SCSI] Stop accep... |
1336 1337 |
blk_cleanup_queue(sdev->request_queue); cancel_work_sync(&sdev->requeue_work); |
1da177e4c Linux-2.6.12-rc2 |
1338 1339 |
if (sdev->host->hostt->slave_destroy) sdev->host->hostt->slave_destroy(sdev); |
df133c212 [SCSI] Fix transp... |
1340 |
transport_destroy_device(dev); |
86cbfb560 [SCSI] put strict... |
1341 |
|
e63ed0d7a [SCSI] fix our cu... |
1342 1343 1344 1345 1346 1347 |
/* * 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 [SCSI] Fix transp... |
1348 |
put_device(dev); |
903f4fed8 [SCSI] fix caller... |
1349 1350 1351 1352 1353 1354 1355 1356 |
} /** * scsi_remove_device - unregister a device from the scsi bus * @sdev: scsi_device to unregister **/ void scsi_remove_device(struct scsi_device *sdev) { |
541950027 [SCSI] fix use af... |
1357 |
struct Scsi_Host *shost = sdev->host; |
0b9506723 [SCSI] turn most ... |
1358 |
mutex_lock(&shost->scan_mutex); |
903f4fed8 [SCSI] fix caller... |
1359 |
__scsi_remove_device(sdev); |
0b9506723 [SCSI] turn most ... |
1360 |
mutex_unlock(&shost->scan_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1361 1362 |
} EXPORT_SYMBOL(scsi_remove_device); |
44818efba [SCSI] small clea... |
1363 |
static void __scsi_remove_target(struct scsi_target *starget) |
1da177e4c Linux-2.6.12-rc2 |
1364 1365 1366 |
{ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); unsigned long flags; |
a64358db1 [SCSI] SCSI scann... |
1367 |
struct scsi_device *sdev; |
1da177e4c Linux-2.6.12-rc2 |
1368 1369 |
spin_lock_irqsave(shost->host_lock, flags); |
a64358db1 [SCSI] SCSI scann... |
1370 1371 |
restart: list_for_each_entry(sdev, &shost->__devices, siblings) { |
fbce4d97f scsi: fixup kerne... |
1372 1373 1374 1375 1376 1377 |
/* * We cannot call scsi_device_get() here, as * we might've been called from rmmod() causing * scsi_device_get() to fail the module_is_live() * check. */ |
1da177e4c Linux-2.6.12-rc2 |
1378 |
if (sdev->channel != starget->channel || |
875758d79 scsi: core: check... |
1379 1380 1381 1382 |
sdev->id != starget->id) continue; if (sdev->sdev_state == SDEV_DEL || sdev->sdev_state == SDEV_CANCEL || |
fbce4d97f scsi: fixup kerne... |
1383 |
!get_device(&sdev->sdev_gendev)) |
1da177e4c Linux-2.6.12-rc2 |
1384 1385 1386 |
continue; spin_unlock_irqrestore(shost->host_lock, flags); scsi_remove_device(sdev); |
fbce4d97f scsi: fixup kerne... |
1387 |
put_device(&sdev->sdev_gendev); |
1da177e4c Linux-2.6.12-rc2 |
1388 |
spin_lock_irqsave(shost->host_lock, flags); |
a64358db1 [SCSI] SCSI scann... |
1389 |
goto restart; |
1da177e4c Linux-2.6.12-rc2 |
1390 1391 |
} spin_unlock_irqrestore(shost->host_lock, flags); |
20b1e6742 [PATCH] Use devic... |
1392 |
} |
1da177e4c Linux-2.6.12-rc2 |
1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 |
/** * 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 [SCSI] fix hot un... |
1403 |
struct Scsi_Host *shost = dev_to_shost(dev->parent); |
305c2e71b Revert "scsi: fix... |
1404 |
struct scsi_target *starget; |
3b661a92e [SCSI] fix hot un... |
1405 |
unsigned long flags; |
409981935 scsi: restart lis... |
1406 |
restart: |
3b661a92e [SCSI] fix hot un... |
1407 1408 |
spin_lock_irqsave(shost->host_lock, flags); list_for_each_entry(starget, &shost->__targets, siblings) { |
90a88d6ef scsi: fix soft lo... |
1409 |
if (starget->state == STARGET_DEL || |
f9279c968 scsi: Add STARGET... |
1410 1411 |
starget->state == STARGET_REMOVE || starget->state == STARGET_CREATED_REMOVE) |
3b661a92e [SCSI] fix hot un... |
1412 1413 |
continue; if (starget->dev.parent == dev || &starget->dev == dev) { |
e63ed0d7a [SCSI] fix our cu... |
1414 |
kref_get(&starget->reap_ref); |
f9279c968 scsi: Add STARGET... |
1415 1416 1417 1418 |
if (starget->state == STARGET_CREATED) starget->state = STARGET_CREATED_REMOVE; else starget->state = STARGET_REMOVE; |
bc3f02a79 [SCSI] scsi_remov... |
1419 |
spin_unlock_irqrestore(shost->host_lock, flags); |
bc3f02a79 [SCSI] scsi_remov... |
1420 |
__scsi_remove_target(starget); |
409981935 scsi: restart lis... |
1421 1422 |
scsi_target_reap(starget); goto restart; |
3b661a92e [SCSI] fix hot un... |
1423 |
} |
1da177e4c Linux-2.6.12-rc2 |
1424 |
} |
3b661a92e [SCSI] fix hot un... |
1425 |
spin_unlock_irqrestore(shost->host_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 |
} 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 Linux-2.6.12-rc2 |
1444 1445 1446 |
/** * scsi_sysfs_add_host - add scsi host to subsystem * @shost: scsi host struct to add to subsystem |
1da177e4c Linux-2.6.12-rc2 |
1447 1448 1449 1450 |
**/ int scsi_sysfs_add_host(struct Scsi_Host *shost) { int error, i; |
f7120a4f7 [SCSI] use defaul... |
1451 |
/* add host specific attributes */ |
1da177e4c Linux-2.6.12-rc2 |
1452 1453 |
if (shost->hostt->shost_attrs) { for (i = 0; shost->hostt->shost_attrs[i]; i++) { |
ee959b00c SCSI: convert str... |
1454 |
error = device_create_file(&shost->shost_dev, |
f7120a4f7 [SCSI] use defaul... |
1455 |
shost->hostt->shost_attrs[i]); |
1da177e4c Linux-2.6.12-rc2 |
1456 1457 1458 1459 1460 1461 |
if (error) return error; } } transport_register_device(&shost->shost_gendev); |
d52b3815a [SCSI] add missin... |
1462 |
transport_configure_device(&shost->shost_gendev); |
1da177e4c Linux-2.6.12-rc2 |
1463 1464 |
return 0; } |
bfd129445 [SCSI] switch sde... |
1465 1466 1467 1468 1469 |
static struct device_type scsi_dev_type = { .name = "scsi_device", .release = scsi_device_dev_release, .groups = scsi_sdev_attr_groups, }; |
1da177e4c Linux-2.6.12-rc2 |
1470 1471 1472 1473 1474 1475 1476 1477 |
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 [SCSI] switch sde... |
1478 |
sdev->sdev_gendev.type = &scsi_dev_type; |
9cb78c16f scsi: use 64-bit ... |
1479 |
dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%llu", |
71610f55f [SCSI] struct dev... |
1480 |
sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); |
ee959b00c SCSI: convert str... |
1481 |
device_initialize(&sdev->sdev_dev); |
37e6ba007 [SCSI] fix memory... |
1482 |
sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev); |
ee959b00c SCSI: convert str... |
1483 |
sdev->sdev_dev.class = &sdev_class; |
9cb78c16f scsi: use 64-bit ... |
1484 |
dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%llu", |
71610f55f [SCSI] struct dev... |
1485 |
sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); |
50c4e9641 scsi: don't store... |
1486 1487 1488 1489 1490 1491 1492 |
/* * 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 [SCSI] SCSI core:... |
1493 |
sdev->scsi_level = starget->scsi_level; |
50c4e9641 scsi: don't store... |
1494 1495 1496 1497 |
if (sdev->scsi_level <= SCSI_2 && sdev->scsi_level != SCSI_UNKNOWN && !shost->no_scsi2_lun_in_cdb) sdev->lun_in_cdb = 1; |
1da177e4c Linux-2.6.12-rc2 |
1498 1499 1500 1501 1502 |
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 [SCSI] fix our cu... |
1503 1504 1505 1506 1507 1508 |
/* * 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 Linux-2.6.12-rc2 |
1509 1510 1511 1512 |
} int scsi_is_sdev_device(const struct device *dev) { |
13ba9bcbf [SCSI] fix scsi_i... |
1513 |
return dev->type == &scsi_dev_type; |
1da177e4c Linux-2.6.12-rc2 |
1514 1515 1516 1517 1518 1519 |
} 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, }, }, }, }; |