Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * scsi_sysfs.c |
| 3 | * |
| 4 | * SCSI sysfs interface routines. |
| 5 | * |
| 6 | * Created to pull SCSI mid layer sysfs routines into one file. |
| 7 | */ |
| 8 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 10 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | #include <linux/init.h> |
| 12 | #include <linux/blkdev.h> |
| 13 | #include <linux/device.h> |
Alan Stern | bc4f240 | 2010-06-17 10:41:42 -0400 | [diff] [blame] | 14 | #include <linux/pm_runtime.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | |
| 16 | #include <scsi/scsi.h> |
| 17 | #include <scsi/scsi_device.h> |
| 18 | #include <scsi/scsi_host.h> |
| 19 | #include <scsi/scsi_tcq.h> |
| 20 | #include <scsi/scsi_transport.h> |
Adrian Bunk | 44818ef | 2007-07-09 11:59:59 -0700 | [diff] [blame] | 21 | #include <scsi/scsi_driver.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | |
| 23 | #include "scsi_priv.h" |
| 24 | #include "scsi_logging.h" |
| 25 | |
Hannes Reinecke | b0ed433 | 2008-03-18 14:32:28 +0100 | [diff] [blame] | 26 | static struct device_type scsi_dev_type; |
| 27 | |
Arjan van de Ven | 0ad7820 | 2005-11-28 16:22:25 +0100 | [diff] [blame] | 28 | static const struct { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | enum scsi_device_state value; |
| 30 | char *name; |
| 31 | } sdev_states[] = { |
| 32 | { SDEV_CREATED, "created" }, |
| 33 | { SDEV_RUNNING, "running" }, |
| 34 | { SDEV_CANCEL, "cancel" }, |
| 35 | { SDEV_DEL, "deleted" }, |
| 36 | { SDEV_QUIESCE, "quiesce" }, |
| 37 | { SDEV_OFFLINE, "offline" }, |
| 38 | { SDEV_BLOCK, "blocked" }, |
James Bottomley | 6f4267e | 2008-08-22 16:53:31 -0500 | [diff] [blame] | 39 | { SDEV_CREATED_BLOCK, "created-blocked" }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | }; |
| 41 | |
| 42 | const char *scsi_device_state_name(enum scsi_device_state state) |
| 43 | { |
| 44 | int i; |
| 45 | char *name = NULL; |
| 46 | |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 47 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | if (sdev_states[i].value == state) { |
| 49 | name = sdev_states[i].name; |
| 50 | break; |
| 51 | } |
| 52 | } |
| 53 | return name; |
| 54 | } |
| 55 | |
Arjan van de Ven | 0ad7820 | 2005-11-28 16:22:25 +0100 | [diff] [blame] | 56 | static const struct { |
Mike Anderson | d330187 | 2005-06-16 11:12:38 -0700 | [diff] [blame] | 57 | enum scsi_host_state value; |
| 58 | char *name; |
| 59 | } shost_states[] = { |
| 60 | { SHOST_CREATED, "created" }, |
| 61 | { SHOST_RUNNING, "running" }, |
| 62 | { SHOST_CANCEL, "cancel" }, |
| 63 | { SHOST_DEL, "deleted" }, |
| 64 | { SHOST_RECOVERY, "recovery" }, |
James Bottomley | 939647e | 2005-09-18 15:05:20 -0500 | [diff] [blame] | 65 | { SHOST_CANCEL_RECOVERY, "cancel/recovery" }, |
| 66 | { SHOST_DEL_RECOVERY, "deleted/recovery", }, |
Mike Anderson | d330187 | 2005-06-16 11:12:38 -0700 | [diff] [blame] | 67 | }; |
| 68 | const char *scsi_host_state_name(enum scsi_host_state state) |
| 69 | { |
| 70 | int i; |
| 71 | char *name = NULL; |
| 72 | |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 73 | for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
Mike Anderson | d330187 | 2005-06-16 11:12:38 -0700 | [diff] [blame] | 74 | if (shost_states[i].value == state) { |
| 75 | name = shost_states[i].name; |
| 76 | break; |
| 77 | } |
| 78 | } |
| 79 | return name; |
| 80 | } |
| 81 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | static int check_set(unsigned int *val, char *src) |
| 83 | { |
| 84 | char *last; |
| 85 | |
| 86 | if (strncmp(src, "-", 20) == 0) { |
| 87 | *val = SCAN_WILD_CARD; |
| 88 | } else { |
| 89 | /* |
| 90 | * Doesn't check for int overflow |
| 91 | */ |
| 92 | *val = simple_strtoul(src, &last, 0); |
| 93 | if (*last != '\0') |
| 94 | return 1; |
| 95 | } |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | static int scsi_scan(struct Scsi_Host *shost, const char *str) |
| 100 | { |
| 101 | char s1[15], s2[15], s3[15], junk; |
| 102 | unsigned int channel, id, lun; |
| 103 | int res; |
| 104 | |
| 105 | res = sscanf(str, "%10s %10s %10s %c", s1, s2, s3, &junk); |
| 106 | if (res != 3) |
| 107 | return -EINVAL; |
| 108 | if (check_set(&channel, s1)) |
| 109 | return -EINVAL; |
| 110 | if (check_set(&id, s2)) |
| 111 | return -EINVAL; |
| 112 | if (check_set(&lun, s3)) |
| 113 | return -EINVAL; |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 114 | if (shost->transportt->user_scan) |
| 115 | res = shost->transportt->user_scan(shost, channel, id, lun); |
| 116 | else |
| 117 | res = scsi_scan_host_selected(shost, channel, id, lun, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | return res; |
| 119 | } |
| 120 | |
| 121 | /* |
| 122 | * shost_show_function: macro to create an attr function that can be used to |
| 123 | * show a non-bit field. |
| 124 | */ |
| 125 | #define shost_show_function(name, field, format_string) \ |
| 126 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 127 | show_##name (struct device *dev, struct device_attribute *attr, \ |
| 128 | char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 130 | struct Scsi_Host *shost = class_to_shost(dev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | return snprintf (buf, 20, format_string, shost->field); \ |
| 132 | } |
| 133 | |
| 134 | /* |
| 135 | * shost_rd_attr: macro to create a function and attribute variable for a |
| 136 | * read only field. |
| 137 | */ |
| 138 | #define shost_rd_attr2(name, field, format_string) \ |
| 139 | shost_show_function(name, field, format_string) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 140 | static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
| 142 | #define shost_rd_attr(field, format_string) \ |
| 143 | shost_rd_attr2(field, field, format_string) |
| 144 | |
| 145 | /* |
| 146 | * Create the actual show/store functions and data structures. |
| 147 | */ |
| 148 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 149 | static ssize_t |
| 150 | store_scan(struct device *dev, struct device_attribute *attr, |
| 151 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 153 | struct Scsi_Host *shost = class_to_shost(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | int res; |
| 155 | |
| 156 | res = scsi_scan(shost, buf); |
| 157 | if (res == 0) |
| 158 | res = count; |
| 159 | return res; |
| 160 | }; |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 161 | static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Mike Anderson | d330187 | 2005-06-16 11:12:38 -0700 | [diff] [blame] | 163 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 164 | store_shost_state(struct device *dev, struct device_attribute *attr, |
| 165 | const char *buf, size_t count) |
Mike Anderson | d330187 | 2005-06-16 11:12:38 -0700 | [diff] [blame] | 166 | { |
| 167 | int i; |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 168 | struct Scsi_Host *shost = class_to_shost(dev); |
Mike Anderson | d330187 | 2005-06-16 11:12:38 -0700 | [diff] [blame] | 169 | enum scsi_host_state state = 0; |
| 170 | |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 171 | for (i = 0; i < ARRAY_SIZE(shost_states); i++) { |
Mike Anderson | d330187 | 2005-06-16 11:12:38 -0700 | [diff] [blame] | 172 | const int len = strlen(shost_states[i].name); |
| 173 | if (strncmp(shost_states[i].name, buf, len) == 0 && |
| 174 | buf[len] == '\n') { |
| 175 | state = shost_states[i].value; |
| 176 | break; |
| 177 | } |
| 178 | } |
| 179 | if (!state) |
| 180 | return -EINVAL; |
| 181 | |
| 182 | if (scsi_host_set_state(shost, state)) |
| 183 | return -EINVAL; |
| 184 | return count; |
| 185 | } |
| 186 | |
| 187 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 188 | show_shost_state(struct device *dev, struct device_attribute *attr, char *buf) |
Mike Anderson | d330187 | 2005-06-16 11:12:38 -0700 | [diff] [blame] | 189 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 190 | struct Scsi_Host *shost = class_to_shost(dev); |
Mike Anderson | d330187 | 2005-06-16 11:12:38 -0700 | [diff] [blame] | 191 | const char *name = scsi_host_state_name(shost->shost_state); |
| 192 | |
| 193 | if (!name) |
| 194 | return -EINVAL; |
| 195 | |
| 196 | return snprintf(buf, 20, "%s\n", name); |
| 197 | } |
| 198 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 199 | /* DEVICE_ATTR(state) clashes with dev_attr_state for sdev */ |
| 200 | struct device_attribute dev_attr_hstate = |
| 201 | __ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state); |
Mike Anderson | d330187 | 2005-06-16 11:12:38 -0700 | [diff] [blame] | 202 | |
FUJITA Tomonori | 5dc2b89 | 2007-09-01 02:02:20 +0900 | [diff] [blame] | 203 | static ssize_t |
| 204 | show_shost_mode(unsigned int mode, char *buf) |
| 205 | { |
| 206 | ssize_t len = 0; |
| 207 | |
| 208 | if (mode & MODE_INITIATOR) |
| 209 | len = sprintf(buf, "%s", "Initiator"); |
| 210 | |
| 211 | if (mode & MODE_TARGET) |
| 212 | len += sprintf(buf + len, "%s%s", len ? ", " : "", "Target"); |
| 213 | |
| 214 | len += sprintf(buf + len, "\n"); |
| 215 | |
| 216 | return len; |
| 217 | } |
| 218 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 219 | static ssize_t |
| 220 | show_shost_supported_mode(struct device *dev, struct device_attribute *attr, |
| 221 | char *buf) |
FUJITA Tomonori | 5dc2b89 | 2007-09-01 02:02:20 +0900 | [diff] [blame] | 222 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 223 | struct Scsi_Host *shost = class_to_shost(dev); |
James Bottomley | 7a39ac3 | 2007-09-25 22:45:53 -0500 | [diff] [blame] | 224 | unsigned int supported_mode = shost->hostt->supported_mode; |
FUJITA Tomonori | 5dc2b89 | 2007-09-01 02:02:20 +0900 | [diff] [blame] | 225 | |
James Bottomley | 7a39ac3 | 2007-09-25 22:45:53 -0500 | [diff] [blame] | 226 | if (supported_mode == MODE_UNKNOWN) |
| 227 | /* by default this should be initiator */ |
| 228 | supported_mode = MODE_INITIATOR; |
| 229 | |
| 230 | return show_shost_mode(supported_mode, buf); |
FUJITA Tomonori | 5dc2b89 | 2007-09-01 02:02:20 +0900 | [diff] [blame] | 231 | } |
| 232 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 233 | static DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL); |
FUJITA Tomonori | 5dc2b89 | 2007-09-01 02:02:20 +0900 | [diff] [blame] | 234 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 235 | static ssize_t |
| 236 | show_shost_active_mode(struct device *dev, |
| 237 | struct device_attribute *attr, char *buf) |
FUJITA Tomonori | 5dc2b89 | 2007-09-01 02:02:20 +0900 | [diff] [blame] | 238 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 239 | struct Scsi_Host *shost = class_to_shost(dev); |
FUJITA Tomonori | 5dc2b89 | 2007-09-01 02:02:20 +0900 | [diff] [blame] | 240 | |
| 241 | if (shost->active_mode == MODE_UNKNOWN) |
| 242 | return snprintf(buf, 20, "unknown\n"); |
| 243 | else |
| 244 | return show_shost_mode(shost->active_mode, buf); |
| 245 | } |
| 246 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 247 | static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL); |
FUJITA Tomonori | 5dc2b89 | 2007-09-01 02:02:20 +0900 | [diff] [blame] | 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | shost_rd_attr(unique_id, "%u\n"); |
| 250 | shost_rd_attr(host_busy, "%hu\n"); |
| 251 | shost_rd_attr(cmd_per_lun, "%hd\n"); |
James Bottomley | ed632da | 2006-10-16 10:06:27 -0500 | [diff] [blame] | 252 | shost_rd_attr(can_queue, "%hd\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | shost_rd_attr(sg_tablesize, "%hu\n"); |
Martin K. Petersen | 13f05c8 | 2010-09-10 20:50:10 +0200 | [diff] [blame] | 254 | shost_rd_attr(sg_prot_tablesize, "%hu\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | shost_rd_attr(unchecked_isa_dma, "%d\n"); |
Martin K. Petersen | 4469f98 | 2008-07-17 04:28:30 -0400 | [diff] [blame] | 256 | shost_rd_attr(prot_capabilities, "%u\n"); |
| 257 | shost_rd_attr(prot_guard_type, "%hd\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | shost_rd_attr2(proc_name, hostt->proc_name, "%s\n"); |
| 259 | |
Hannes Reinecke | f7120a4 | 2008-03-18 14:32:28 +0100 | [diff] [blame] | 260 | static struct attribute *scsi_sysfs_shost_attrs[] = { |
| 261 | &dev_attr_unique_id.attr, |
| 262 | &dev_attr_host_busy.attr, |
| 263 | &dev_attr_cmd_per_lun.attr, |
| 264 | &dev_attr_can_queue.attr, |
| 265 | &dev_attr_sg_tablesize.attr, |
Martin K. Petersen | 13f05c8 | 2010-09-10 20:50:10 +0200 | [diff] [blame] | 266 | &dev_attr_sg_prot_tablesize.attr, |
Hannes Reinecke | f7120a4 | 2008-03-18 14:32:28 +0100 | [diff] [blame] | 267 | &dev_attr_unchecked_isa_dma.attr, |
| 268 | &dev_attr_proc_name.attr, |
| 269 | &dev_attr_scan.attr, |
| 270 | &dev_attr_hstate.attr, |
| 271 | &dev_attr_supported_mode.attr, |
| 272 | &dev_attr_active_mode.attr, |
Martin K. Petersen | 4469f98 | 2008-07-17 04:28:30 -0400 | [diff] [blame] | 273 | &dev_attr_prot_capabilities.attr, |
| 274 | &dev_attr_prot_guard_type.attr, |
Hannes Reinecke | f7120a4 | 2008-03-18 14:32:28 +0100 | [diff] [blame] | 275 | NULL |
| 276 | }; |
| 277 | |
| 278 | struct attribute_group scsi_shost_attr_group = { |
| 279 | .attrs = scsi_sysfs_shost_attrs, |
| 280 | }; |
| 281 | |
David Brownell | a4dbd67 | 2009-06-24 10:06:31 -0700 | [diff] [blame] | 282 | const struct attribute_group *scsi_sysfs_shost_attr_groups[] = { |
Hannes Reinecke | f7120a4 | 2008-03-18 14:32:28 +0100 | [diff] [blame] | 283 | &scsi_shost_attr_group, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | NULL |
| 285 | }; |
| 286 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 287 | static void scsi_device_cls_release(struct device *class_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | { |
| 289 | struct scsi_device *sdev; |
| 290 | |
| 291 | sdev = class_to_sdev(class_dev); |
| 292 | put_device(&sdev->sdev_gendev); |
| 293 | } |
| 294 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 295 | static void scsi_device_dev_release_usercontext(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | { |
| 297 | struct scsi_device *sdev; |
| 298 | struct device *parent; |
| 299 | struct scsi_target *starget; |
Jeff Garzik | a341cd0 | 2007-10-29 17:15:22 -0400 | [diff] [blame] | 300 | struct list_head *this, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | unsigned long flags; |
| 302 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 303 | sdev = container_of(work, struct scsi_device, ew.work); |
| 304 | |
| 305 | parent = sdev->sdev_gendev.parent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | starget = to_scsi_target(parent); |
| 307 | |
| 308 | spin_lock_irqsave(sdev->host->host_lock, flags); |
| 309 | starget->reap_ref++; |
| 310 | list_del(&sdev->siblings); |
| 311 | list_del(&sdev->same_target_siblings); |
| 312 | list_del(&sdev->starved_entry); |
| 313 | spin_unlock_irqrestore(sdev->host->host_lock, flags); |
| 314 | |
Jeff Garzik | a341cd0 | 2007-10-29 17:15:22 -0400 | [diff] [blame] | 315 | cancel_work_sync(&sdev->event_work); |
| 316 | |
| 317 | list_for_each_safe(this, tmp, &sdev->event_list) { |
| 318 | struct scsi_event *evt; |
| 319 | |
| 320 | evt = list_entry(this, struct scsi_event, node); |
| 321 | list_del(&evt->node); |
| 322 | kfree(evt); |
| 323 | } |
| 324 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | if (sdev->request_queue) { |
| 326 | sdev->request_queue->queuedata = NULL; |
James Bottomley | 65110b2 | 2006-02-14 10:48:46 -0600 | [diff] [blame] | 327 | /* user context needed to free queue */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | scsi_free_queue(sdev->request_queue); |
| c2a9331 | 2005-04-12 16:38:09 -0500 | [diff] [blame] | 329 | /* temporary expedient, try to catch use of queue lock |
| 330 | * after free of sdev */ |
| 331 | sdev->request_queue = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | scsi_target_reap(scsi_target(sdev)); |
| 335 | |
| 336 | kfree(sdev->inquiry); |
| 337 | kfree(sdev); |
| 338 | |
| 339 | if (parent) |
| 340 | put_device(parent); |
| 341 | } |
| 342 | |
James Bottomley | 65110b2 | 2006-02-14 10:48:46 -0600 | [diff] [blame] | 343 | static void scsi_device_dev_release(struct device *dev) |
| 344 | { |
James Bottomley | ffedb45 | 2006-02-23 14:27:18 -0600 | [diff] [blame] | 345 | struct scsi_device *sdp = to_scsi_device(dev); |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 346 | execute_in_process_context(scsi_device_dev_release_usercontext, |
James Bottomley | ffedb45 | 2006-02-23 14:27:18 -0600 | [diff] [blame] | 347 | &sdp->ew); |
James Bottomley | 65110b2 | 2006-02-14 10:48:46 -0600 | [diff] [blame] | 348 | } |
| 349 | |
Adrian Bunk | 52c1da3 | 2005-06-23 22:05:33 -0700 | [diff] [blame] | 350 | static struct class sdev_class = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | .name = "scsi_device", |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 352 | .dev_release = scsi_device_cls_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | }; |
| 354 | |
| 355 | /* all probing is done in the individual ->probe routines */ |
| 356 | static int scsi_bus_match(struct device *dev, struct device_driver *gendrv) |
| 357 | { |
Hannes Reinecke | b0ed433 | 2008-03-18 14:32:28 +0100 | [diff] [blame] | 358 | struct scsi_device *sdp; |
| 359 | |
| 360 | if (dev->type != &scsi_dev_type) |
| 361 | return 0; |
| 362 | |
| 363 | sdp = to_scsi_device(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | if (sdp->no_uld_attach) |
| 365 | return 0; |
| 366 | return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0; |
| 367 | } |
| 368 | |
Kay Sievers | 7eff2e7 | 2007-08-14 15:15:12 +0200 | [diff] [blame] | 369 | static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
Michael Tokarev | d7b8bcb | 2006-10-27 16:02:37 +0400 | [diff] [blame] | 370 | { |
James Bottomley | 1f42ea7 | 2008-05-22 12:34:41 +0100 | [diff] [blame] | 371 | struct scsi_device *sdev; |
| 372 | |
| 373 | if (dev->type != &scsi_dev_type) |
| 374 | return 0; |
| 375 | |
| 376 | sdev = to_scsi_device(dev); |
Michael Tokarev | d7b8bcb | 2006-10-27 16:02:37 +0400 | [diff] [blame] | 377 | |
Kay Sievers | 7eff2e7 | 2007-08-14 15:15:12 +0200 | [diff] [blame] | 378 | add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); |
Michael Tokarev | d7b8bcb | 2006-10-27 16:02:37 +0400 | [diff] [blame] | 379 | return 0; |
| 380 | } |
| 381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | struct bus_type scsi_bus_type = { |
| 383 | .name = "scsi", |
| 384 | .match = scsi_bus_match, |
Michael Tokarev | d7b8bcb | 2006-10-27 16:02:37 +0400 | [diff] [blame] | 385 | .uevent = scsi_bus_uevent, |
Alan Stern | e6da54d | 2010-08-05 13:17:10 -0400 | [diff] [blame] | 386 | #ifdef CONFIG_PM_OPS |
Alan Stern | db5bd1e | 2010-06-17 10:36:49 -0400 | [diff] [blame] | 387 | .pm = &scsi_bus_pm_ops, |
Alan Stern | e6da54d | 2010-08-05 13:17:10 -0400 | [diff] [blame] | 388 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | }; |
Chandra Seetharaman | a6a8d9f | 2008-05-01 14:49:46 -0700 | [diff] [blame] | 390 | EXPORT_SYMBOL_GPL(scsi_bus_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | |
| 392 | int scsi_sysfs_register(void) |
| 393 | { |
| 394 | int error; |
| 395 | |
| 396 | error = bus_register(&scsi_bus_type); |
| 397 | if (!error) { |
| 398 | error = class_register(&sdev_class); |
| 399 | if (error) |
| 400 | bus_unregister(&scsi_bus_type); |
| 401 | } |
| 402 | |
| 403 | return error; |
| 404 | } |
| 405 | |
| 406 | void scsi_sysfs_unregister(void) |
| 407 | { |
| 408 | class_unregister(&sdev_class); |
| 409 | bus_unregister(&scsi_bus_type); |
| 410 | } |
| 411 | |
| 412 | /* |
| 413 | * sdev_show_function: macro to create an attr function that can be used to |
| 414 | * show a non-bit field. |
| 415 | */ |
| 416 | #define sdev_show_function(field, format_string) \ |
| 417 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 418 | sdev_show_##field (struct device *dev, struct device_attribute *attr, \ |
| 419 | char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | { \ |
| 421 | struct scsi_device *sdev; \ |
| 422 | sdev = to_scsi_device(dev); \ |
| 423 | return snprintf (buf, 20, format_string, sdev->field); \ |
| 424 | } \ |
| 425 | |
| 426 | /* |
| 427 | * sdev_rd_attr: macro to create a function and attribute variable for a |
| 428 | * read only field. |
| 429 | */ |
| 430 | #define sdev_rd_attr(field, format_string) \ |
| 431 | sdev_show_function(field, format_string) \ |
| 432 | static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL); |
| 433 | |
| 434 | |
| 435 | /* |
Tomohiro Kusumi | 160e7f6 | 2010-04-14 15:15:14 +0900 | [diff] [blame] | 436 | * sdev_rw_attr: create a function and attribute variable for a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | * read/write field. |
| 438 | */ |
| 439 | #define sdev_rw_attr(field, format_string) \ |
| 440 | sdev_show_function(field, format_string) \ |
| 441 | \ |
| 442 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 443 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
| 444 | const char *buf, size_t count) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | { \ |
| 446 | struct scsi_device *sdev; \ |
| 447 | sdev = to_scsi_device(dev); \ |
Tomohiro Kusumi | 160e7f6 | 2010-04-14 15:15:14 +0900 | [diff] [blame] | 448 | sscanf (buf, format_string, &sdev->field); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | return count; \ |
| 450 | } \ |
| 451 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); |
| 452 | |
| 453 | /* Currently we don't export bit fields, but we might in future, |
| 454 | * so leave this code in */ |
| 455 | #if 0 |
| 456 | /* |
| 457 | * sdev_rd_attr: create a function and attribute variable for a |
| 458 | * read/write bit field. |
| 459 | */ |
| 460 | #define sdev_rw_attr_bit(field) \ |
| 461 | sdev_show_function(field, "%d\n") \ |
| 462 | \ |
| 463 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 464 | sdev_store_##field (struct device *dev, struct device_attribute *attr, \ |
| 465 | const char *buf, size_t count) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | { \ |
| 467 | int ret; \ |
| 468 | struct scsi_device *sdev; \ |
| 469 | ret = scsi_sdev_check_buf_bit(buf); \ |
| 470 | if (ret >= 0) { \ |
| 471 | sdev = to_scsi_device(dev); \ |
| 472 | sdev->field = ret; \ |
| 473 | ret = count; \ |
| 474 | } \ |
| 475 | return ret; \ |
| 476 | } \ |
| 477 | static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field); |
| 478 | |
| 479 | /* |
| 480 | * scsi_sdev_check_buf_bit: return 0 if buf is "0", return 1 if buf is "1", |
| 481 | * else return -EINVAL. |
| 482 | */ |
| 483 | static int scsi_sdev_check_buf_bit(const char *buf) |
| 484 | { |
| 485 | if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) { |
| 486 | if (buf[0] == '1') |
| 487 | return 1; |
| 488 | else if (buf[0] == '0') |
| 489 | return 0; |
| 490 | else |
| 491 | return -EINVAL; |
| 492 | } else |
| 493 | return -EINVAL; |
| 494 | } |
| 495 | #endif |
| 496 | /* |
| 497 | * Create the actual show/store functions and data structures. |
| 498 | */ |
| 499 | sdev_rd_attr (device_blocked, "%d\n"); |
| 500 | sdev_rd_attr (queue_depth, "%d\n"); |
| 501 | sdev_rd_attr (type, "%d\n"); |
| 502 | sdev_rd_attr (scsi_level, "%d\n"); |
| 503 | sdev_rd_attr (vendor, "%.8s\n"); |
| 504 | sdev_rd_attr (model, "%.16s\n"); |
| 505 | sdev_rd_attr (rev, "%.4s\n"); |
| 506 | |
Jens Axboe | 242f9dc | 2008-09-14 05:55:09 -0700 | [diff] [blame] | 507 | /* |
| 508 | * TODO: can we make these symlinks to the block layer ones? |
| 509 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 511 | sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | { |
| 513 | struct scsi_device *sdev; |
| 514 | sdev = to_scsi_device(dev); |
Jens Axboe | 242f9dc | 2008-09-14 05:55:09 -0700 | [diff] [blame] | 515 | return snprintf(buf, 20, "%d\n", sdev->request_queue->rq_timeout / HZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | } |
| 517 | |
| 518 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 519 | sdev_store_timeout (struct device *dev, struct device_attribute *attr, |
| 520 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | { |
| 522 | struct scsi_device *sdev; |
| 523 | int timeout; |
| 524 | sdev = to_scsi_device(dev); |
| 525 | sscanf (buf, "%d\n", &timeout); |
Jens Axboe | 242f9dc | 2008-09-14 05:55:09 -0700 | [diff] [blame] | 526 | blk_queue_rq_timeout(sdev->request_queue, timeout * HZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | return count; |
| 528 | } |
| 529 | static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout); |
| 530 | |
| 531 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 532 | store_rescan_field (struct device *dev, struct device_attribute *attr, |
| 533 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | { |
| 535 | scsi_rescan_device(dev); |
| 536 | return count; |
| 537 | } |
| 538 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field); |
| 539 | |
Alan Stern | d9a9cdf | 2007-03-15 15:50:34 -0400 | [diff] [blame] | 540 | static void sdev_store_delete_callback(struct device *dev) |
| 541 | { |
| 542 | scsi_remove_device(to_scsi_device(dev)); |
| 543 | } |
| 544 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 545 | static ssize_t |
| 546 | sdev_store_delete(struct device *dev, struct device_attribute *attr, |
| 547 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | { |
Alan Stern | d9a9cdf | 2007-03-15 15:50:34 -0400 | [diff] [blame] | 549 | int rc; |
| 550 | |
| 551 | /* An attribute cannot be unregistered by one of its own methods, |
| 552 | * so we have to use this roundabout approach. |
| 553 | */ |
| 554 | rc = device_schedule_callback(dev, sdev_store_delete_callback); |
| 555 | if (rc) |
| 556 | count = rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | return count; |
| 558 | }; |
| 559 | static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete); |
| 560 | |
| 561 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 562 | store_state_field(struct device *dev, struct device_attribute *attr, |
| 563 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | { |
| 565 | int i; |
| 566 | struct scsi_device *sdev = to_scsi_device(dev); |
| 567 | enum scsi_device_state state = 0; |
| 568 | |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 569 | for (i = 0; i < ARRAY_SIZE(sdev_states); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | const int len = strlen(sdev_states[i].name); |
| 571 | if (strncmp(sdev_states[i].name, buf, len) == 0 && |
| 572 | buf[len] == '\n') { |
| 573 | state = sdev_states[i].value; |
| 574 | break; |
| 575 | } |
| 576 | } |
| 577 | if (!state) |
| 578 | return -EINVAL; |
| 579 | |
| 580 | if (scsi_device_set_state(sdev, state)) |
| 581 | return -EINVAL; |
| 582 | return count; |
| 583 | } |
| 584 | |
| 585 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 586 | show_state_field(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | { |
| 588 | struct scsi_device *sdev = to_scsi_device(dev); |
| 589 | const char *name = scsi_device_state_name(sdev->sdev_state); |
| 590 | |
| 591 | if (!name) |
| 592 | return -EINVAL; |
| 593 | |
| 594 | return snprintf(buf, 20, "%s\n", name); |
| 595 | } |
| 596 | |
| 597 | static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field); |
| 598 | |
| 599 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 600 | show_queue_type_field(struct device *dev, struct device_attribute *attr, |
| 601 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | { |
| 603 | struct scsi_device *sdev = to_scsi_device(dev); |
| 604 | const char *name = "none"; |
| 605 | |
| 606 | if (sdev->ordered_tags) |
| 607 | name = "ordered"; |
| 608 | else if (sdev->simple_tags) |
| 609 | name = "simple"; |
| 610 | |
| 611 | return snprintf(buf, 20, "%s\n", name); |
| 612 | } |
| 613 | |
| 614 | static DEVICE_ATTR(queue_type, S_IRUGO, show_queue_type_field, NULL); |
| 615 | |
| 616 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 617 | show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | { |
| 619 | return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8); |
| 620 | } |
| 621 | |
| 622 | static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL); |
| 623 | |
| 624 | #define show_sdev_iostat(field) \ |
| 625 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 626 | show_iostat_##field(struct device *dev, struct device_attribute *attr, \ |
| 627 | char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | { \ |
| 629 | struct scsi_device *sdev = to_scsi_device(dev); \ |
| 630 | unsigned long long count = atomic_read(&sdev->field); \ |
| 631 | return snprintf(buf, 20, "0x%llx\n", count); \ |
| 632 | } \ |
| 633 | static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL) |
| 634 | |
| 635 | show_sdev_iostat(iorequest_cnt); |
| 636 | show_sdev_iostat(iodone_cnt); |
| 637 | show_sdev_iostat(ioerr_cnt); |
| 638 | |
Michael Tokarev | d7b8bcb | 2006-10-27 16:02:37 +0400 | [diff] [blame] | 639 | static ssize_t |
| 640 | sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf) |
| 641 | { |
| 642 | struct scsi_device *sdev; |
| 643 | sdev = to_scsi_device(dev); |
| 644 | return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type); |
| 645 | } |
| 646 | static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | |
Jeff Garzik | a341cd0 | 2007-10-29 17:15:22 -0400 | [diff] [blame] | 648 | #define DECLARE_EVT_SHOW(name, Cap_name) \ |
| 649 | static ssize_t \ |
| 650 | sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 651 | char *buf) \ |
Jeff Garzik | a341cd0 | 2007-10-29 17:15:22 -0400 | [diff] [blame] | 652 | { \ |
| 653 | struct scsi_device *sdev = to_scsi_device(dev); \ |
| 654 | int val = test_bit(SDEV_EVT_##Cap_name, sdev->supported_events);\ |
| 655 | return snprintf(buf, 20, "%d\n", val); \ |
| 656 | } |
| 657 | |
| 658 | #define DECLARE_EVT_STORE(name, Cap_name) \ |
| 659 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 660 | sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\ |
Jeff Garzik | a341cd0 | 2007-10-29 17:15:22 -0400 | [diff] [blame] | 661 | const char *buf, size_t count) \ |
| 662 | { \ |
| 663 | struct scsi_device *sdev = to_scsi_device(dev); \ |
| 664 | int val = simple_strtoul(buf, NULL, 0); \ |
| 665 | if (val == 0) \ |
| 666 | clear_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ |
| 667 | else if (val == 1) \ |
| 668 | set_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \ |
| 669 | else \ |
| 670 | return -EINVAL; \ |
| 671 | return count; \ |
| 672 | } |
| 673 | |
| 674 | #define DECLARE_EVT(name, Cap_name) \ |
| 675 | DECLARE_EVT_SHOW(name, Cap_name) \ |
| 676 | DECLARE_EVT_STORE(name, Cap_name) \ |
| 677 | static DEVICE_ATTR(evt_##name, S_IRUGO, sdev_show_evt_##name, \ |
| 678 | sdev_store_evt_##name); |
| 679 | #define REF_EVT(name) &dev_attr_evt_##name.attr |
| 680 | |
| 681 | DECLARE_EVT(media_change, MEDIA_CHANGE) |
| 682 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | /* Default template for device attributes. May NOT be modified */ |
Kay Sievers | bfd1294 | 2007-09-11 17:00:14 +0200 | [diff] [blame] | 684 | static struct attribute *scsi_sdev_attrs[] = { |
| 685 | &dev_attr_device_blocked.attr, |
| 686 | &dev_attr_type.attr, |
| 687 | &dev_attr_scsi_level.attr, |
| 688 | &dev_attr_vendor.attr, |
| 689 | &dev_attr_model.attr, |
| 690 | &dev_attr_rev.attr, |
| 691 | &dev_attr_rescan.attr, |
| 692 | &dev_attr_delete.attr, |
| 693 | &dev_attr_state.attr, |
| 694 | &dev_attr_timeout.attr, |
| 695 | &dev_attr_iocounterbits.attr, |
| 696 | &dev_attr_iorequest_cnt.attr, |
| 697 | &dev_attr_iodone_cnt.attr, |
| 698 | &dev_attr_ioerr_cnt.attr, |
| 699 | &dev_attr_modalias.attr, |
Jeff Garzik | a341cd0 | 2007-10-29 17:15:22 -0400 | [diff] [blame] | 700 | REF_EVT(media_change), |
Kay Sievers | bfd1294 | 2007-09-11 17:00:14 +0200 | [diff] [blame] | 701 | NULL |
| 702 | }; |
| 703 | |
| 704 | static struct attribute_group scsi_sdev_attr_group = { |
| 705 | .attrs = scsi_sdev_attrs, |
| 706 | }; |
| 707 | |
David Brownell | a4dbd67 | 2009-06-24 10:06:31 -0700 | [diff] [blame] | 708 | static const struct attribute_group *scsi_sdev_attr_groups[] = { |
Kay Sievers | bfd1294 | 2007-09-11 17:00:14 +0200 | [diff] [blame] | 709 | &scsi_sdev_attr_group, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | NULL |
| 711 | }; |
| 712 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 713 | static ssize_t |
| 714 | sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr, |
| 715 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | { |
| 717 | int depth, retval; |
| 718 | struct scsi_device *sdev = to_scsi_device(dev); |
| 719 | struct scsi_host_template *sht = sdev->host->hostt; |
| 720 | |
| 721 | if (!sht->change_queue_depth) |
| 722 | return -EINVAL; |
| 723 | |
| 724 | depth = simple_strtoul(buf, NULL, 0); |
| 725 | |
| 726 | if (depth < 1) |
| 727 | return -EINVAL; |
| 728 | |
Mike Christie | e881a17 | 2009-10-15 17:46:39 -0700 | [diff] [blame] | 729 | retval = sht->change_queue_depth(sdev, depth, |
| 730 | SCSI_QDEPTH_DEFAULT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | if (retval < 0) |
| 732 | return retval; |
| 733 | |
Vasu Dev | 4a84067 | 2009-10-22 15:46:33 -0700 | [diff] [blame] | 734 | sdev->max_queue_depth = sdev->queue_depth; |
| 735 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | return count; |
| 737 | } |
| 738 | |
| 739 | static struct device_attribute sdev_attr_queue_depth_rw = |
| 740 | __ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth, |
| 741 | sdev_store_queue_depth_rw); |
| 742 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 743 | static ssize_t |
Vasu Dev | 4a84067 | 2009-10-22 15:46:33 -0700 | [diff] [blame] | 744 | sdev_show_queue_ramp_up_period(struct device *dev, |
| 745 | struct device_attribute *attr, |
| 746 | char *buf) |
| 747 | { |
| 748 | struct scsi_device *sdev; |
| 749 | sdev = to_scsi_device(dev); |
| 750 | return snprintf(buf, 20, "%u\n", |
| 751 | jiffies_to_msecs(sdev->queue_ramp_up_period)); |
| 752 | } |
| 753 | |
| 754 | static ssize_t |
| 755 | sdev_store_queue_ramp_up_period(struct device *dev, |
| 756 | struct device_attribute *attr, |
| 757 | const char *buf, size_t count) |
| 758 | { |
| 759 | struct scsi_device *sdev = to_scsi_device(dev); |
| 760 | unsigned long period; |
| 761 | |
| 762 | if (strict_strtoul(buf, 10, &period)) |
| 763 | return -EINVAL; |
| 764 | |
| 765 | sdev->queue_ramp_up_period = msecs_to_jiffies(period); |
| 766 | return period; |
| 767 | } |
| 768 | |
| 769 | static struct device_attribute sdev_attr_queue_ramp_up_period = |
| 770 | __ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR, |
| 771 | sdev_show_queue_ramp_up_period, |
| 772 | sdev_store_queue_ramp_up_period); |
| 773 | |
| 774 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 775 | sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr, |
| 776 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | { |
| 778 | struct scsi_device *sdev = to_scsi_device(dev); |
| 779 | struct scsi_host_template *sht = sdev->host->hostt; |
| 780 | int tag_type = 0, retval; |
| 781 | int prev_tag_type = scsi_get_tag_type(sdev); |
| 782 | |
| 783 | if (!sdev->tagged_supported || !sht->change_queue_type) |
| 784 | return -EINVAL; |
| 785 | |
| 786 | if (strncmp(buf, "ordered", 7) == 0) |
| 787 | tag_type = MSG_ORDERED_TAG; |
| 788 | else if (strncmp(buf, "simple", 6) == 0) |
| 789 | tag_type = MSG_SIMPLE_TAG; |
| 790 | else if (strncmp(buf, "none", 4) != 0) |
| 791 | return -EINVAL; |
| 792 | |
| 793 | if (tag_type == prev_tag_type) |
| 794 | return count; |
| 795 | |
| 796 | retval = sht->change_queue_type(sdev, tag_type); |
| 797 | if (retval < 0) |
| 798 | return retval; |
| 799 | |
| 800 | return count; |
| 801 | } |
| 802 | |
James Bottomley | 643eb2d | 2008-03-22 22:42:27 -0500 | [diff] [blame] | 803 | static int scsi_target_add(struct scsi_target *starget) |
| 804 | { |
| 805 | int error; |
| 806 | |
| 807 | if (starget->state != STARGET_CREATED) |
| 808 | return 0; |
| 809 | |
| 810 | error = device_add(&starget->dev); |
| 811 | if (error) { |
| 812 | dev_err(&starget->dev, "target device_add failed, error %d\n", error); |
James Bottomley | 643eb2d | 2008-03-22 22:42:27 -0500 | [diff] [blame] | 813 | return error; |
| 814 | } |
| 815 | transport_add_device(&starget->dev); |
| 816 | starget->state = STARGET_RUNNING; |
| 817 | |
Alan Stern | bc4f240 | 2010-06-17 10:41:42 -0400 | [diff] [blame] | 818 | pm_runtime_set_active(&starget->dev); |
| 819 | pm_runtime_enable(&starget->dev); |
| 820 | device_enable_async_suspend(&starget->dev); |
| 821 | |
James Bottomley | 643eb2d | 2008-03-22 22:42:27 -0500 | [diff] [blame] | 822 | return 0; |
| 823 | } |
| 824 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | static struct device_attribute sdev_attr_queue_type_rw = |
| 826 | __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field, |
| 827 | sdev_store_queue_type_rw); |
| 828 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | /** |
| 830 | * scsi_sysfs_add_sdev - add scsi device to sysfs |
| 831 | * @sdev: scsi_device to add |
| 832 | * |
| 833 | * Return value: |
| 834 | * 0 on Success / non-zero on Failure |
| 835 | **/ |
| 836 | int scsi_sysfs_add_sdev(struct scsi_device *sdev) |
| 837 | { |
| 838 | int error, i; |
James Bottomley | 80ed71c | 2007-07-19 10:15:10 -0500 | [diff] [blame] | 839 | struct request_queue *rq = sdev->request_queue; |
James Bottomley | 643eb2d | 2008-03-22 22:42:27 -0500 | [diff] [blame] | 840 | struct scsi_target *starget = sdev->sdev_target; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | |
Alan Stern | ee37e09 | 2010-02-12 12:13:55 -0500 | [diff] [blame] | 842 | error = scsi_device_set_state(sdev, SDEV_RUNNING); |
| 843 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | return error; |
| 845 | |
James Bottomley | 643eb2d | 2008-03-22 22:42:27 -0500 | [diff] [blame] | 846 | error = scsi_target_add(starget); |
| 847 | if (error) |
| 848 | return error; |
| 849 | |
| 850 | transport_configure_device(&starget->dev); |
Alan Stern | bc4f240 | 2010-06-17 10:41:42 -0400 | [diff] [blame] | 851 | |
Rafael J. Wysocki | 4cb077d | 2010-02-08 19:18:26 +0100 | [diff] [blame] | 852 | device_enable_async_suspend(&sdev->sdev_gendev); |
Alan Stern | bc4f240 | 2010-06-17 10:41:42 -0400 | [diff] [blame] | 853 | scsi_autopm_get_target(starget); |
| 854 | pm_runtime_set_active(&sdev->sdev_gendev); |
| 855 | pm_runtime_forbid(&sdev->sdev_gendev); |
| 856 | pm_runtime_enable(&sdev->sdev_gendev); |
| 857 | scsi_autopm_put_target(starget); |
| 858 | |
| 859 | /* The following call will keep sdev active indefinitely, until |
| 860 | * its driver does a corresponding scsi_autopm_pm_device(). Only |
| 861 | * drivers supporting autosuspend will do this. |
| 862 | */ |
| 863 | scsi_autopm_get_device(sdev); |
| 864 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | error = device_add(&sdev->sdev_gendev); |
| 866 | if (error) { |
Alan Stern | 73d8c34 | 2010-11-15 16:03:04 -0500 | [diff] [blame] | 867 | sdev_printk(KERN_INFO, sdev, |
| 868 | "failed to add device: %d\n", error); |
Alan Stern | ee37e09 | 2010-02-12 12:13:55 -0500 | [diff] [blame] | 869 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | } |
Rafael J. Wysocki | 4cb077d | 2010-02-08 19:18:26 +0100 | [diff] [blame] | 871 | device_enable_async_suspend(&sdev->sdev_dev); |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 872 | error = device_add(&sdev->sdev_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | if (error) { |
Alan Stern | 73d8c34 | 2010-11-15 16:03:04 -0500 | [diff] [blame] | 874 | sdev_printk(KERN_INFO, sdev, |
| 875 | "failed to add class device: %d\n", error); |
James Bottomley | 860dc73 | 2009-11-19 17:48:29 -0500 | [diff] [blame] | 876 | device_del(&sdev->sdev_gendev); |
Alan Stern | ee37e09 | 2010-02-12 12:13:55 -0500 | [diff] [blame] | 877 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | } |
James Bottomley | 860dc73 | 2009-11-19 17:48:29 -0500 | [diff] [blame] | 879 | transport_add_device(&sdev->sdev_gendev); |
| 880 | sdev->is_visible = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | |
Kay Sievers | bfd1294 | 2007-09-11 17:00:14 +0200 | [diff] [blame] | 882 | /* create queue files, which may be writable, depending on the host */ |
Vasu Dev | 4a84067 | 2009-10-22 15:46:33 -0700 | [diff] [blame] | 883 | if (sdev->host->hostt->change_queue_depth) { |
| 884 | error = device_create_file(&sdev->sdev_gendev, |
| 885 | &sdev_attr_queue_depth_rw); |
| 886 | error = device_create_file(&sdev->sdev_gendev, |
| 887 | &sdev_attr_queue_ramp_up_period); |
| 888 | } |
Kay Sievers | bfd1294 | 2007-09-11 17:00:14 +0200 | [diff] [blame] | 889 | else |
| 890 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth); |
James Bottomley | 860dc73 | 2009-11-19 17:48:29 -0500 | [diff] [blame] | 891 | if (error) |
Alan Stern | ee37e09 | 2010-02-12 12:13:55 -0500 | [diff] [blame] | 892 | return error; |
James Bottomley | 860dc73 | 2009-11-19 17:48:29 -0500 | [diff] [blame] | 893 | |
Kay Sievers | bfd1294 | 2007-09-11 17:00:14 +0200 | [diff] [blame] | 894 | if (sdev->host->hostt->change_queue_type) |
| 895 | error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_type_rw); |
| 896 | else |
| 897 | error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_type); |
James Bottomley | 860dc73 | 2009-11-19 17:48:29 -0500 | [diff] [blame] | 898 | if (error) |
Alan Stern | ee37e09 | 2010-02-12 12:13:55 -0500 | [diff] [blame] | 899 | return error; |
Kay Sievers | bfd1294 | 2007-09-11 17:00:14 +0200 | [diff] [blame] | 900 | |
FUJITA Tomonori | 97f46ae | 2008-04-19 00:43:14 +0900 | [diff] [blame] | 901 | error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL); |
James Bottomley | 80ed71c | 2007-07-19 10:15:10 -0500 | [diff] [blame] | 902 | |
| 903 | if (error) |
James Bottomley | 860dc73 | 2009-11-19 17:48:29 -0500 | [diff] [blame] | 904 | /* we're treating error on bsg register as non-fatal, |
| 905 | * so pretend nothing went wrong */ |
James Bottomley | 80ed71c | 2007-07-19 10:15:10 -0500 | [diff] [blame] | 906 | sdev_printk(KERN_INFO, sdev, |
| 907 | "Failed to register bsg queue, errno=%d\n", error); |
| 908 | |
Kay Sievers | bfd1294 | 2007-09-11 17:00:14 +0200 | [diff] [blame] | 909 | /* add additional host specific attributes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | if (sdev->host->hostt->sdev_attrs) { |
| 911 | for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) { |
Kay Sievers | bfd1294 | 2007-09-11 17:00:14 +0200 | [diff] [blame] | 912 | error = device_create_file(&sdev->sdev_gendev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | sdev->host->hostt->sdev_attrs[i]); |
James Bottomley | 860dc73 | 2009-11-19 17:48:29 -0500 | [diff] [blame] | 914 | if (error) |
Alan Stern | ee37e09 | 2010-02-12 12:13:55 -0500 | [diff] [blame] | 915 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | } |
| 917 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | } |
| 921 | |
Alan Stern | 903f4fe | 2005-07-26 10:20:53 -0400 | [diff] [blame] | 922 | void __scsi_remove_device(struct scsi_device *sdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | { |
James Bottomley | df133c2 | 2005-11-06 11:47:08 -0600 | [diff] [blame] | 924 | struct device *dev = &sdev->sdev_gendev; |
| 925 | |
James Bottomley | 860dc73 | 2009-11-19 17:48:29 -0500 | [diff] [blame] | 926 | if (sdev->is_visible) { |
| 927 | if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0) |
| 928 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | |
James Bottomley | 860dc73 | 2009-11-19 17:48:29 -0500 | [diff] [blame] | 930 | bsg_unregister_queue(sdev->request_queue); |
| 931 | device_unregister(&sdev->sdev_dev); |
| 932 | transport_remove_device(dev); |
| 933 | device_del(dev); |
| 934 | } else |
| 935 | put_device(&sdev->sdev_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | scsi_device_set_state(sdev, SDEV_DEL); |
| 937 | if (sdev->host->hostt->slave_destroy) |
| 938 | sdev->host->hostt->slave_destroy(sdev); |
James Bottomley | df133c2 | 2005-11-06 11:47:08 -0600 | [diff] [blame] | 939 | transport_destroy_device(dev); |
| 940 | put_device(dev); |
Alan Stern | 903f4fe | 2005-07-26 10:20:53 -0400 | [diff] [blame] | 941 | } |
| 942 | |
| 943 | /** |
| 944 | * scsi_remove_device - unregister a device from the scsi bus |
| 945 | * @sdev: scsi_device to unregister |
| 946 | **/ |
| 947 | void scsi_remove_device(struct scsi_device *sdev) |
| 948 | { |
Alan Stern | 5419500 | 2005-09-15 21:52:51 -0400 | [diff] [blame] | 949 | struct Scsi_Host *shost = sdev->host; |
| 950 | |
Arjan van de Ven | 0b95067 | 2006-01-11 13:16:10 +0100 | [diff] [blame] | 951 | mutex_lock(&shost->scan_mutex); |
Alan Stern | 903f4fe | 2005-07-26 10:20:53 -0400 | [diff] [blame] | 952 | __scsi_remove_device(sdev); |
Arjan van de Ven | 0b95067 | 2006-01-11 13:16:10 +0100 | [diff] [blame] | 953 | mutex_unlock(&shost->scan_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | } |
| 955 | EXPORT_SYMBOL(scsi_remove_device); |
| 956 | |
Adrian Bunk | 44818ef | 2007-07-09 11:59:59 -0700 | [diff] [blame] | 957 | static void __scsi_remove_target(struct scsi_target *starget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | { |
| 959 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
| 960 | unsigned long flags; |
Alan Stern | a64358d | 2005-07-26 10:27:10 -0400 | [diff] [blame] | 961 | struct scsi_device *sdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | |
| 963 | spin_lock_irqsave(shost->host_lock, flags); |
| 964 | starget->reap_ref++; |
Alan Stern | a64358d | 2005-07-26 10:27:10 -0400 | [diff] [blame] | 965 | restart: |
| 966 | list_for_each_entry(sdev, &shost->__devices, siblings) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | if (sdev->channel != starget->channel || |
Alan Stern | a64358d | 2005-07-26 10:27:10 -0400 | [diff] [blame] | 968 | sdev->id != starget->id || |
Christof Schmitt | 546ae79 | 2010-10-06 13:19:44 +0200 | [diff] [blame] | 969 | scsi_device_get(sdev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | continue; |
| 971 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 972 | scsi_remove_device(sdev); |
Christof Schmitt | 546ae79 | 2010-10-06 13:19:44 +0200 | [diff] [blame] | 973 | scsi_device_put(sdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | spin_lock_irqsave(shost->host_lock, flags); |
Alan Stern | a64358d | 2005-07-26 10:27:10 -0400 | [diff] [blame] | 975 | goto restart; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | } |
| 977 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 978 | scsi_target_reap(starget); |
| 979 | } |
| 980 | |
mochel@digitalimplant.org | 20b1e67 | 2005-03-24 19:03:59 -0800 | [diff] [blame] | 981 | static int __remove_child (struct device * dev, void * data) |
| 982 | { |
| 983 | if (scsi_is_target_device(dev)) |
| 984 | __scsi_remove_target(to_scsi_target(dev)); |
| 985 | return 0; |
| 986 | } |
| 987 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | /** |
| 989 | * scsi_remove_target - try to remove a target and all its devices |
| 990 | * @dev: generic starget or parent of generic stargets to be removed |
| 991 | * |
| 992 | * Note: This is slightly racy. It is possible that if the user |
| 993 | * requests the addition of another device then the target won't be |
| 994 | * removed. |
| 995 | */ |
| 996 | void scsi_remove_target(struct device *dev) |
| 997 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | if (scsi_is_target_device(dev)) { |
| 999 | __scsi_remove_target(to_scsi_target(dev)); |
| 1000 | return; |
| 1001 | } |
| 1002 | |
Alan Stern | 4151170 | 2010-11-15 16:04:56 -0500 | [diff] [blame] | 1003 | get_device(dev); |
mochel@digitalimplant.org | 20b1e67 | 2005-03-24 19:03:59 -0800 | [diff] [blame] | 1004 | device_for_each_child(dev, NULL, __remove_child); |
Alan Stern | 4151170 | 2010-11-15 16:04:56 -0500 | [diff] [blame] | 1005 | put_device(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | } |
| 1007 | EXPORT_SYMBOL(scsi_remove_target); |
| 1008 | |
| 1009 | int scsi_register_driver(struct device_driver *drv) |
| 1010 | { |
| 1011 | drv->bus = &scsi_bus_type; |
| 1012 | |
| 1013 | return driver_register(drv); |
| 1014 | } |
| 1015 | EXPORT_SYMBOL(scsi_register_driver); |
| 1016 | |
| 1017 | int scsi_register_interface(struct class_interface *intf) |
| 1018 | { |
| 1019 | intf->class = &sdev_class; |
| 1020 | |
| 1021 | return class_interface_register(intf); |
| 1022 | } |
| 1023 | EXPORT_SYMBOL(scsi_register_interface); |
| 1024 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | /** |
| 1026 | * scsi_sysfs_add_host - add scsi host to subsystem |
| 1027 | * @shost: scsi host struct to add to subsystem |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | **/ |
| 1029 | int scsi_sysfs_add_host(struct Scsi_Host *shost) |
| 1030 | { |
| 1031 | int error, i; |
| 1032 | |
Hannes Reinecke | f7120a4 | 2008-03-18 14:32:28 +0100 | [diff] [blame] | 1033 | /* add host specific attributes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | if (shost->hostt->shost_attrs) { |
| 1035 | for (i = 0; shost->hostt->shost_attrs[i]; i++) { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1036 | error = device_create_file(&shost->shost_dev, |
Hannes Reinecke | f7120a4 | 2008-03-18 14:32:28 +0100 | [diff] [blame] | 1037 | shost->hostt->shost_attrs[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | if (error) |
| 1039 | return error; |
| 1040 | } |
| 1041 | } |
| 1042 | |
| 1043 | transport_register_device(&shost->shost_gendev); |
James Bottomley | d52b381 | 2008-01-05 09:38:30 -0600 | [diff] [blame] | 1044 | transport_configure_device(&shost->shost_gendev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | return 0; |
| 1046 | } |
| 1047 | |
Kay Sievers | bfd1294 | 2007-09-11 17:00:14 +0200 | [diff] [blame] | 1048 | static struct device_type scsi_dev_type = { |
| 1049 | .name = "scsi_device", |
| 1050 | .release = scsi_device_dev_release, |
| 1051 | .groups = scsi_sdev_attr_groups, |
| 1052 | }; |
| 1053 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | void scsi_sysfs_device_initialize(struct scsi_device *sdev) |
| 1055 | { |
| 1056 | unsigned long flags; |
| 1057 | struct Scsi_Host *shost = sdev->host; |
| 1058 | struct scsi_target *starget = sdev->sdev_target; |
| 1059 | |
| 1060 | device_initialize(&sdev->sdev_gendev); |
| 1061 | sdev->sdev_gendev.bus = &scsi_bus_type; |
Kay Sievers | bfd1294 | 2007-09-11 17:00:14 +0200 | [diff] [blame] | 1062 | sdev->sdev_gendev.type = &scsi_dev_type; |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 1063 | dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%d", |
| 1064 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); |
| 1065 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1066 | device_initialize(&sdev->sdev_dev); |
James Bottomley | 37e6ba0 | 2009-10-02 13:30:08 -0500 | [diff] [blame] | 1067 | sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev); |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1068 | sdev->sdev_dev.class = &sdev_class; |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 1069 | dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%d", |
| 1070 | sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); |
Alan Stern | 7c9d6f1 | 2007-01-08 11:12:32 -0500 | [diff] [blame] | 1071 | sdev->scsi_level = starget->scsi_level; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | transport_setup_device(&sdev->sdev_gendev); |
| 1073 | spin_lock_irqsave(shost->host_lock, flags); |
| 1074 | list_add_tail(&sdev->same_target_siblings, &starget->devices); |
| 1075 | list_add_tail(&sdev->siblings, &shost->__devices); |
| 1076 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1077 | } |
| 1078 | |
| 1079 | int scsi_is_sdev_device(const struct device *dev) |
| 1080 | { |
Kay Sievers | 13ba9bc | 2007-09-26 19:54:49 +0200 | [diff] [blame] | 1081 | return dev->type == &scsi_dev_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | } |
| 1083 | EXPORT_SYMBOL(scsi_is_sdev_device); |
| 1084 | |
| 1085 | /* A blank transport template that is used in drivers that don't |
| 1086 | * yet implement Transport Attributes */ |
| 1087 | struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, }; |