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drivers/scsi/scsi_sysfs.c
27.5 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> #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" }, { 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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static int check_set(unsigned int *val, char *src) { char *last; if (strncmp(src, "-", 20) == 0) { *val = SCAN_WILD_CARD; } else { /* * Doesn't check for int overflow */ *val = simple_strtoul(src, &last, 0); if (*last != '\0') return 1; } return 0; } static int scsi_scan(struct Scsi_Host *shost, const char *str) { char s1[15], s2[15], s3[15], junk; unsigned int channel, id, lun; int res; res = sscanf(str, "%10s %10s %10s %c", s1, s2, s3, &junk); 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 res = scsi_scan_host_selected(shost, channel, id, lun, 1); |
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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 */ struct device_attribute dev_attr_hstate = __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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|
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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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shost_rd_attr(unique_id, "%u "); shost_rd_attr(host_busy, "%hu "); 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 struct attribute *scsi_sysfs_shost_attrs[] = { &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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NULL }; struct attribute_group scsi_shost_attr_group = { .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; struct scsi_target *starget; |
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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); parent = sdev->sdev_gendev.parent; |
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starget = to_scsi_target(parent); spin_lock_irqsave(sdev->host->host_lock, flags); starget->reap_ref++; 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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scsi_target_reap(scsi_target(sdev)); 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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|
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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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{ \ struct scsi_device *sdev; \ sdev = to_scsi_device(dev); \ |
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sscanf (buf, format_string, &sdev->field); \ |
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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 \ |
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sdev_store_##field (struct device *dev, struct device_attribute *attr, \ const char *buf, size_t count) \ |
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{ \ 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. */ sdev_rd_attr (device_blocked, "%d "); sdev_rd_attr (queue_depth, "%d "); 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 "); |
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/* * TODO: can we make these symlinks to the block layer ones? */ |
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static ssize_t |
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sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf) |
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{ struct scsi_device *sdev; sdev = to_scsi_device(dev); |
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return snprintf(buf, 20, "%d ", sdev->request_queue->rq_timeout / HZ); |
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} static ssize_t |
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sdev_store_timeout (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
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{ struct scsi_device *sdev; int timeout; sdev = to_scsi_device(dev); sscanf (buf, "%d ", &timeout); |
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blk_queue_rq_timeout(sdev->request_queue, timeout * HZ); |
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return count; } static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout); static ssize_t |
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store_rescan_field (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
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{ scsi_rescan_device(dev); return count; } static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field); |
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534 535 536 537 |
static void sdev_store_delete_callback(struct device *dev) { scsi_remove_device(to_scsi_device(dev)); } |
ee959b00c SCSI: convert str... |
538 539 540 |
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 |
541 |
{ |
d9a9cdfb0 [PATCH] sysfs and... |
542 543 544 545 546 547 548 549 |
int rc; /* An attribute cannot be unregistered by one of its own methods, * so we have to use this roundabout approach. */ rc = device_schedule_callback(dev, sdev_store_delete_callback); if (rc) count = rc; |
1da177e4c Linux-2.6.12-rc2 |
550 551 552 553 554 |
return count; }; static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete); static ssize_t |
ee959b00c SCSI: convert str... |
555 556 |
store_state_field(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
557 558 559 560 |
{ int i; struct scsi_device *sdev = to_scsi_device(dev); enum scsi_device_state state = 0; |
6391a1137 [SCSI] drivers/sc... |
561 |
for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
1da177e4c Linux-2.6.12-rc2 |
562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 |
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 [PATCH] Driver Co... |
579 |
show_state_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
580 581 582 583 584 585 586 587 588 589 590 591 592 593 |
{ 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... |
594 595 |
show_queue_type_field(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 |
{ struct scsi_device *sdev = to_scsi_device(dev); const char *name = "none"; if (sdev->ordered_tags) name = "ordered"; else if (sdev->simple_tags) name = "simple"; return snprintf(buf, 20, "%s ", name); } static DEVICE_ATTR(queue_type, S_IRUGO, show_queue_type_field, NULL); static ssize_t |
ee959b00c SCSI: convert str... |
612 |
show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
613 614 615 616 617 618 619 620 621 |
{ 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... |
622 623 |
show_iostat_##field(struct device *dev, struct device_attribute *attr, \ char *buf) \ |
1da177e4c Linux-2.6.12-rc2 |
624 625 626 627 628 629 630 631 632 633 634 |
{ \ 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... |
635 636 637 638 639 640 641 642 643 |
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 |
644 |
|
a341cd0f6 SCSI: add asynchr... |
645 646 647 |
#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... |
648 |
char *buf) \ |
a341cd0f6 SCSI: add asynchr... |
649 650 651 652 653 654 655 656 657 |
{ \ 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... |
658 |
sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\ |
a341cd0f6 SCSI: add asynchr... |
659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 |
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) |
1da177e4c Linux-2.6.12-rc2 |
680 |
/* Default template for device attributes. May NOT be modified */ |
bfd129445 [SCSI] switch sde... |
681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 |
static struct attribute *scsi_sdev_attrs[] = { &dev_attr_device_blocked.attr, &dev_attr_type.attr, &dev_attr_scsi_level.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_iocounterbits.attr, &dev_attr_iorequest_cnt.attr, &dev_attr_iodone_cnt.attr, &dev_attr_ioerr_cnt.attr, &dev_attr_modalias.attr, |
a341cd0f6 SCSI: add asynchr... |
697 |
REF_EVT(media_change), |
bfd129445 [SCSI] switch sde... |
698 699 700 701 702 703 |
NULL }; static struct attribute_group scsi_sdev_attr_group = { .attrs = scsi_sdev_attrs, }; |
a4dbd6740 driver model: con... |
704 |
static const struct attribute_group *scsi_sdev_attr_groups[] = { |
bfd129445 [SCSI] switch sde... |
705 |
&scsi_sdev_attr_group, |
1da177e4c Linux-2.6.12-rc2 |
706 707 |
NULL }; |
ee959b00c SCSI: convert str... |
708 709 710 |
static ssize_t sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
711 712 713 714 715 716 717 718 719 720 721 722 |
{ 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); if (depth < 1) return -EINVAL; |
e881a172d [SCSI] modify cha... |
723 724 |
retval = sht->change_queue_depth(sdev, depth, SCSI_QDEPTH_DEFAULT); |
1da177e4c Linux-2.6.12-rc2 |
725 726 |
if (retval < 0) return retval; |
4a84067db [SCSI] add queue_... |
727 |
sdev->max_queue_depth = sdev->queue_depth; |
1da177e4c Linux-2.6.12-rc2 |
728 729 730 731 732 733 |
return count; } static struct device_attribute sdev_attr_queue_depth_rw = __ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth, sdev_store_queue_depth_rw); |
ee959b00c SCSI: convert str... |
734 |
static ssize_t |
4a84067db [SCSI] add queue_... |
735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 |
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); unsigned long period; if (strict_strtoul(buf, 10, &period)) return -EINVAL; sdev->queue_ramp_up_period = msecs_to_jiffies(period); return period; } static struct device_attribute sdev_attr_queue_ramp_up_period = __ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR, sdev_show_queue_ramp_up_period, sdev_store_queue_ramp_up_period); static ssize_t |
ee959b00c SCSI: convert str... |
767 768 |
sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 |
{ struct scsi_device *sdev = to_scsi_device(dev); struct scsi_host_template *sht = sdev->host->hostt; int tag_type = 0, retval; int prev_tag_type = scsi_get_tag_type(sdev); if (!sdev->tagged_supported || !sht->change_queue_type) return -EINVAL; if (strncmp(buf, "ordered", 7) == 0) tag_type = MSG_ORDERED_TAG; else if (strncmp(buf, "simple", 6) == 0) tag_type = MSG_SIMPLE_TAG; else if (strncmp(buf, "none", 4) != 0) return -EINVAL; if (tag_type == prev_tag_type) return count; retval = sht->change_queue_type(sdev, tag_type); if (retval < 0) return retval; return count; } |
643eb2d93 [SCSI] rework scs... |
794 795 796 797 798 799 800 801 802 803 804 |
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... |
805 806 807 808 |
return error; } transport_add_device(&starget->dev); starget->state = STARGET_RUNNING; |
bc4f24014 [SCSI] implement ... |
809 810 811 |
pm_runtime_set_active(&starget->dev); pm_runtime_enable(&starget->dev); device_enable_async_suspend(&starget->dev); |
643eb2d93 [SCSI] rework scs... |
812 813 |
return 0; } |
1da177e4c Linux-2.6.12-rc2 |
814 815 816 |
static struct device_attribute sdev_attr_queue_type_rw = __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field, sdev_store_queue_type_rw); |
1da177e4c Linux-2.6.12-rc2 |
817 818 819 820 821 822 823 824 825 826 |
/** * 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... |
827 |
struct request_queue *rq = sdev->request_queue; |
643eb2d93 [SCSI] rework scs... |
828 |
struct scsi_target *starget = sdev->sdev_target; |
1da177e4c Linux-2.6.12-rc2 |
829 |
|
ee37e09d8 [SCSI] fix duplic... |
830 831 |
error = scsi_device_set_state(sdev, SDEV_RUNNING); if (error) |
1da177e4c Linux-2.6.12-rc2 |
832 |
return error; |
643eb2d93 [SCSI] rework scs... |
833 834 835 836 837 |
error = scsi_target_add(starget); if (error) return error; transport_configure_device(&starget->dev); |
bc4f24014 [SCSI] implement ... |
838 |
|
4cb077d93 PM: Allow SCSI de... |
839 |
device_enable_async_suspend(&sdev->sdev_gendev); |
bc4f24014 [SCSI] implement ... |
840 841 842 843 844 845 846 847 848 849 850 |
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); /* The following call will keep sdev active indefinitely, until * its driver does a corresponding scsi_autopm_pm_device(). Only * drivers supporting autosuspend will do this. */ scsi_autopm_get_device(sdev); |
1da177e4c Linux-2.6.12-rc2 |
851 852 |
error = device_add(&sdev->sdev_gendev); if (error) { |
73d8c34f3 SCSI: improve two... |
853 854 855 |
sdev_printk(KERN_INFO, sdev, "failed to add device: %d ", error); |
ee37e09d8 [SCSI] fix duplic... |
856 |
return error; |
1da177e4c Linux-2.6.12-rc2 |
857 |
} |
4cb077d93 PM: Allow SCSI de... |
858 |
device_enable_async_suspend(&sdev->sdev_dev); |
ee959b00c SCSI: convert str... |
859 |
error = device_add(&sdev->sdev_dev); |
1da177e4c Linux-2.6.12-rc2 |
860 |
if (error) { |
73d8c34f3 SCSI: improve two... |
861 862 863 |
sdev_printk(KERN_INFO, sdev, "failed to add class device: %d ", error); |
860dc7360 [SCSI] fix async ... |
864 |
device_del(&sdev->sdev_gendev); |
ee37e09d8 [SCSI] fix duplic... |
865 |
return error; |
1da177e4c Linux-2.6.12-rc2 |
866 |
} |
860dc7360 [SCSI] fix async ... |
867 868 |
transport_add_device(&sdev->sdev_gendev); sdev->is_visible = 1; |
1da177e4c Linux-2.6.12-rc2 |
869 |
|
bfd129445 [SCSI] switch sde... |
870 |
/* create queue files, which may be writable, depending on the host */ |
4a84067db [SCSI] add queue_... |
871 872 873 874 875 876 |
if (sdev->host->hostt->change_queue_depth) { error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_depth_rw); error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_ramp_up_period); } |
bfd129445 [SCSI] switch sde... |
877 878 |
else error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth); |
860dc7360 [SCSI] fix async ... |
879 |
if (error) |
ee37e09d8 [SCSI] fix duplic... |
880 |
return error; |
860dc7360 [SCSI] fix async ... |
881 |
|
bfd129445 [SCSI] switch sde... |
882 883 884 885 |
if (sdev->host->hostt->change_queue_type) error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_type_rw); else error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_type); |
860dc7360 [SCSI] fix async ... |
886 |
if (error) |
ee37e09d8 [SCSI] fix duplic... |
887 |
return error; |
bfd129445 [SCSI] switch sde... |
888 |
|
97f46ae45 [SCSI] bsg: add r... |
889 |
error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL); |
80ed71ce1 [SCSI] bsg: separ... |
890 891 |
if (error) |
860dc7360 [SCSI] fix async ... |
892 893 |
/* we're treating error on bsg register as non-fatal, * so pretend nothing went wrong */ |
80ed71ce1 [SCSI] bsg: separ... |
894 895 896 |
sdev_printk(KERN_INFO, sdev, "Failed to register bsg queue, errno=%d ", error); |
bfd129445 [SCSI] switch sde... |
897 |
/* add additional host specific attributes */ |
1da177e4c Linux-2.6.12-rc2 |
898 899 |
if (sdev->host->hostt->sdev_attrs) { for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) { |
bfd129445 [SCSI] switch sde... |
900 |
error = device_create_file(&sdev->sdev_gendev, |
1da177e4c Linux-2.6.12-rc2 |
901 |
sdev->host->hostt->sdev_attrs[i]); |
860dc7360 [SCSI] fix async ... |
902 |
if (error) |
ee37e09d8 [SCSI] fix duplic... |
903 |
return error; |
1da177e4c Linux-2.6.12-rc2 |
904 905 |
} } |
1da177e4c Linux-2.6.12-rc2 |
906 |
|
1da177e4c Linux-2.6.12-rc2 |
907 908 |
return error; } |
903f4fed8 [SCSI] fix caller... |
909 |
void __scsi_remove_device(struct scsi_device *sdev) |
1da177e4c Linux-2.6.12-rc2 |
910 |
{ |
df133c212 [SCSI] Fix transp... |
911 |
struct device *dev = &sdev->sdev_gendev; |
860dc7360 [SCSI] fix async ... |
912 913 914 |
if (sdev->is_visible) { if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0) return; |
1da177e4c Linux-2.6.12-rc2 |
915 |
|
860dc7360 [SCSI] fix async ... |
916 917 918 919 920 921 |
bsg_unregister_queue(sdev->request_queue); device_unregister(&sdev->sdev_dev); transport_remove_device(dev); device_del(dev); } else put_device(&sdev->sdev_dev); |
1da177e4c Linux-2.6.12-rc2 |
922 923 924 |
scsi_device_set_state(sdev, SDEV_DEL); if (sdev->host->hostt->slave_destroy) sdev->host->hostt->slave_destroy(sdev); |
df133c212 [SCSI] Fix transp... |
925 |
transport_destroy_device(dev); |
86cbfb560 [SCSI] put strict... |
926 927 928 929 930 931 |
/* cause the request function to reject all I/O requests */ sdev->request_queue->queuedata = NULL; /* Freeing the queue signals to block that we're done */ scsi_free_queue(sdev->request_queue); |
df133c212 [SCSI] Fix transp... |
932 |
put_device(dev); |
903f4fed8 [SCSI] fix caller... |
933 934 935 936 937 938 939 940 |
} /** * 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... |
941 |
struct Scsi_Host *shost = sdev->host; |
0b9506723 [SCSI] turn most ... |
942 |
mutex_lock(&shost->scan_mutex); |
903f4fed8 [SCSI] fix caller... |
943 |
__scsi_remove_device(sdev); |
0b9506723 [SCSI] turn most ... |
944 |
mutex_unlock(&shost->scan_mutex); |
1da177e4c Linux-2.6.12-rc2 |
945 946 |
} EXPORT_SYMBOL(scsi_remove_device); |
44818efba [SCSI] small clea... |
947 |
static void __scsi_remove_target(struct scsi_target *starget) |
1da177e4c Linux-2.6.12-rc2 |
948 949 950 |
{ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); unsigned long flags; |
a64358db1 [SCSI] SCSI scann... |
951 |
struct scsi_device *sdev; |
1da177e4c Linux-2.6.12-rc2 |
952 953 954 |
spin_lock_irqsave(shost->host_lock, flags); starget->reap_ref++; |
a64358db1 [SCSI] SCSI scann... |
955 956 |
restart: list_for_each_entry(sdev, &shost->__devices, siblings) { |
1da177e4c Linux-2.6.12-rc2 |
957 |
if (sdev->channel != starget->channel || |
a64358db1 [SCSI] SCSI scann... |
958 |
sdev->id != starget->id || |
546ae796b [SCSI] Fix race w... |
959 |
scsi_device_get(sdev)) |
1da177e4c Linux-2.6.12-rc2 |
960 961 962 |
continue; spin_unlock_irqrestore(shost->host_lock, flags); scsi_remove_device(sdev); |
546ae796b [SCSI] Fix race w... |
963 |
scsi_device_put(sdev); |
1da177e4c Linux-2.6.12-rc2 |
964 |
spin_lock_irqsave(shost->host_lock, flags); |
a64358db1 [SCSI] SCSI scann... |
965 |
goto restart; |
1da177e4c Linux-2.6.12-rc2 |
966 967 968 969 |
} spin_unlock_irqrestore(shost->host_lock, flags); scsi_target_reap(starget); } |
20b1e6742 [PATCH] Use devic... |
970 971 972 973 974 975 |
static int __remove_child (struct device * dev, void * data) { if (scsi_is_target_device(dev)) __scsi_remove_target(to_scsi_target(dev)); return 0; } |
1da177e4c Linux-2.6.12-rc2 |
976 977 978 979 980 981 982 983 984 985 |
/** * 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) { |
1da177e4c Linux-2.6.12-rc2 |
986 987 988 989 |
if (scsi_is_target_device(dev)) { __scsi_remove_target(to_scsi_target(dev)); return; } |
41511704b [SCSI] eliminate ... |
990 |
get_device(dev); |
20b1e6742 [PATCH] Use devic... |
991 |
device_for_each_child(dev, NULL, __remove_child); |
41511704b [SCSI] eliminate ... |
992 |
put_device(dev); |
1da177e4c Linux-2.6.12-rc2 |
993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 |
} 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 |
1011 1012 1013 |
/** * scsi_sysfs_add_host - add scsi host to subsystem * @shost: scsi host struct to add to subsystem |
1da177e4c Linux-2.6.12-rc2 |
1014 1015 1016 1017 |
**/ int scsi_sysfs_add_host(struct Scsi_Host *shost) { int error, i; |
f7120a4f7 [SCSI] use defaul... |
1018 |
/* add host specific attributes */ |
1da177e4c Linux-2.6.12-rc2 |
1019 1020 |
if (shost->hostt->shost_attrs) { for (i = 0; shost->hostt->shost_attrs[i]; i++) { |
ee959b00c SCSI: convert str... |
1021 |
error = device_create_file(&shost->shost_dev, |
f7120a4f7 [SCSI] use defaul... |
1022 |
shost->hostt->shost_attrs[i]); |
1da177e4c Linux-2.6.12-rc2 |
1023 1024 1025 1026 1027 1028 |
if (error) return error; } } transport_register_device(&shost->shost_gendev); |
d52b3815a [SCSI] add missin... |
1029 |
transport_configure_device(&shost->shost_gendev); |
1da177e4c Linux-2.6.12-rc2 |
1030 1031 |
return 0; } |
bfd129445 [SCSI] switch sde... |
1032 1033 1034 1035 1036 |
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 |
1037 1038 1039 1040 1041 1042 1043 1044 |
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... |
1045 |
sdev->sdev_gendev.type = &scsi_dev_type; |
71610f55f [SCSI] struct dev... |
1046 1047 |
dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%d", sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); |
ee959b00c SCSI: convert str... |
1048 |
device_initialize(&sdev->sdev_dev); |
37e6ba007 [SCSI] fix memory... |
1049 |
sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev); |
ee959b00c SCSI: convert str... |
1050 |
sdev->sdev_dev.class = &sdev_class; |
71610f55f [SCSI] struct dev... |
1051 1052 |
dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%d", sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); |
7c9d6f16f [SCSI] SCSI core:... |
1053 |
sdev->scsi_level = starget->scsi_level; |
1da177e4c Linux-2.6.12-rc2 |
1054 1055 1056 1057 1058 1059 1060 1061 1062 |
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); } int scsi_is_sdev_device(const struct device *dev) { |
13ba9bcbf [SCSI] fix scsi_i... |
1063 |
return dev->type == &scsi_dev_type; |
1da177e4c Linux-2.6.12-rc2 |
1064 1065 1066 1067 1068 1069 |
} 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, }, }, }, }; |