Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1 | /* |
Christoph Hellwig | a012564 | 2006-02-16 13:31:47 +0100 | [diff] [blame] | 2 | * Copyright (C) 2005-2006 Dell Inc. |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 3 | * Released under GPL v2. |
| 4 | * |
| 5 | * Serial Attached SCSI (SAS) transport class. |
| 6 | * |
| 7 | * The SAS transport class contains common code to deal with SAS HBAs, |
| 8 | * an aproximated representation of SAS topologies in the driver model, |
| 9 | * and various sysfs attributes to expose these topologies and managment |
| 10 | * interfaces to userspace. |
| 11 | * |
| 12 | * In addition to the basic SCSI core objects this transport class |
| 13 | * introduces two additional intermediate objects: The SAS PHY |
| 14 | * as represented by struct sas_phy defines an "outgoing" PHY on |
| 15 | * a SAS HBA or Expander, and the SAS remote PHY represented by |
| 16 | * struct sas_rphy defines an "incoming" PHY on a SAS Expander or |
| 17 | * end device. Note that this is purely a software concept, the |
| 18 | * underlying hardware for a PHY and a remote PHY is the exactly |
| 19 | * the same. |
| 20 | * |
| 21 | * There is no concept of a SAS port in this code, users can see |
| 22 | * what PHYs form a wide port based on the port_identifier attribute, |
| 23 | * which is the same for all PHYs in a port. |
| 24 | */ |
| 25 | |
| 26 | #include <linux/init.h> |
| 27 | #include <linux/module.h> |
Al Viro | f6a5703 | 2006-10-18 01:47:25 -0400 | [diff] [blame] | 28 | #include <linux/jiffies.h> |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 29 | #include <linux/err.h> |
Tim Schmielau | 8c65b4a | 2005-11-07 00:59:43 -0800 | [diff] [blame] | 30 | #include <linux/slab.h> |
| 31 | #include <linux/string.h> |
FUJITA Tomonori | 7aa68e8 | 2007-07-09 12:52:06 +0900 | [diff] [blame^] | 32 | #include <linux/blkdev.h> |
| 33 | #include <linux/bsg.h> |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 34 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 35 | #include <scsi/scsi.h> |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 36 | #include <scsi/scsi_device.h> |
| 37 | #include <scsi/scsi_host.h> |
| 38 | #include <scsi/scsi_transport.h> |
| 39 | #include <scsi/scsi_transport_sas.h> |
| 40 | |
James Bottomley | d6159c1 | 2006-03-27 16:45:34 -0600 | [diff] [blame] | 41 | #include "scsi_sas_internal.h" |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 42 | struct sas_host_attrs { |
| 43 | struct list_head rphy_list; |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 44 | struct mutex lock; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 45 | u32 next_target_id; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 46 | u32 next_expander_id; |
James Bottomley | c9fefeb | 2006-07-02 11:10:18 -0500 | [diff] [blame] | 47 | int next_port_id; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 48 | }; |
| 49 | #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) |
| 50 | |
| 51 | |
| 52 | /* |
| 53 | * Hack to allow attributes of the same name in different objects. |
| 54 | */ |
| 55 | #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
| 56 | struct class_device_attribute class_device_attr_##_prefix##_##_name = \ |
| 57 | __ATTR(_name,_mode,_show,_store) |
| 58 | |
| 59 | |
| 60 | /* |
| 61 | * Pretty printing helpers |
| 62 | */ |
| 63 | |
| 64 | #define sas_bitfield_name_match(title, table) \ |
| 65 | static ssize_t \ |
| 66 | get_sas_##title##_names(u32 table_key, char *buf) \ |
| 67 | { \ |
| 68 | char *prefix = ""; \ |
| 69 | ssize_t len = 0; \ |
| 70 | int i; \ |
| 71 | \ |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 72 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 73 | if (table[i].value & table_key) { \ |
| 74 | len += sprintf(buf + len, "%s%s", \ |
| 75 | prefix, table[i].name); \ |
| 76 | prefix = ", "; \ |
| 77 | } \ |
| 78 | } \ |
| 79 | len += sprintf(buf + len, "\n"); \ |
| 80 | return len; \ |
| 81 | } |
| 82 | |
James Bottomley | d24e1ee | 2006-09-06 19:25:22 -0500 | [diff] [blame] | 83 | #define sas_bitfield_name_set(title, table) \ |
| 84 | static ssize_t \ |
| 85 | set_sas_##title##_names(u32 *table_key, const char *buf) \ |
| 86 | { \ |
| 87 | ssize_t len = 0; \ |
| 88 | int i; \ |
| 89 | \ |
| 90 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
| 91 | len = strlen(table[i].name); \ |
| 92 | if (strncmp(buf, table[i].name, len) == 0 && \ |
| 93 | (buf[len] == '\n' || buf[len] == '\0')) { \ |
| 94 | *table_key = table[i].value; \ |
| 95 | return 0; \ |
| 96 | } \ |
| 97 | } \ |
| 98 | return -EINVAL; \ |
| 99 | } |
| 100 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 101 | #define sas_bitfield_name_search(title, table) \ |
| 102 | static ssize_t \ |
| 103 | get_sas_##title##_names(u32 table_key, char *buf) \ |
| 104 | { \ |
| 105 | ssize_t len = 0; \ |
| 106 | int i; \ |
| 107 | \ |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 108 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 109 | if (table[i].value == table_key) { \ |
| 110 | len += sprintf(buf + len, "%s", \ |
| 111 | table[i].name); \ |
| 112 | break; \ |
| 113 | } \ |
| 114 | } \ |
| 115 | len += sprintf(buf + len, "\n"); \ |
| 116 | return len; \ |
| 117 | } |
| 118 | |
| 119 | static struct { |
| 120 | u32 value; |
| 121 | char *name; |
| 122 | } sas_device_type_names[] = { |
| 123 | { SAS_PHY_UNUSED, "unused" }, |
| 124 | { SAS_END_DEVICE, "end device" }, |
| 125 | { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, |
| 126 | { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, |
| 127 | }; |
| 128 | sas_bitfield_name_search(device_type, sas_device_type_names) |
| 129 | |
| 130 | |
| 131 | static struct { |
| 132 | u32 value; |
| 133 | char *name; |
| 134 | } sas_protocol_names[] = { |
| 135 | { SAS_PROTOCOL_SATA, "sata" }, |
| 136 | { SAS_PROTOCOL_SMP, "smp" }, |
| 137 | { SAS_PROTOCOL_STP, "stp" }, |
| 138 | { SAS_PROTOCOL_SSP, "ssp" }, |
| 139 | }; |
| 140 | sas_bitfield_name_match(protocol, sas_protocol_names) |
| 141 | |
| 142 | static struct { |
| 143 | u32 value; |
| 144 | char *name; |
| 145 | } sas_linkspeed_names[] = { |
| 146 | { SAS_LINK_RATE_UNKNOWN, "Unknown" }, |
| 147 | { SAS_PHY_DISABLED, "Phy disabled" }, |
| 148 | { SAS_LINK_RATE_FAILED, "Link Rate failed" }, |
| 149 | { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, |
| 150 | { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, |
| 151 | { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, |
James Bottomley | 7e6dff6 | 2006-03-02 14:12:56 -0600 | [diff] [blame] | 152 | { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 153 | }; |
| 154 | sas_bitfield_name_search(linkspeed, sas_linkspeed_names) |
James Bottomley | d24e1ee | 2006-09-06 19:25:22 -0500 | [diff] [blame] | 155 | sas_bitfield_name_set(linkspeed, sas_linkspeed_names) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 156 | |
FUJITA Tomonori | 7aa68e8 | 2007-07-09 12:52:06 +0900 | [diff] [blame^] | 157 | static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost, |
| 158 | struct sas_rphy *rphy) |
| 159 | { |
| 160 | struct request *req; |
| 161 | int ret; |
| 162 | int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); |
| 163 | |
| 164 | while (!blk_queue_plugged(q)) { |
| 165 | req = elv_next_request(q); |
| 166 | if (!req) |
| 167 | break; |
| 168 | |
| 169 | blkdev_dequeue_request(req); |
| 170 | |
| 171 | spin_unlock_irq(q->queue_lock); |
| 172 | |
| 173 | handler = to_sas_internal(shost->transportt)->f->smp_handler; |
| 174 | ret = handler(shost, rphy, req); |
| 175 | |
| 176 | spin_lock_irq(q->queue_lock); |
| 177 | |
| 178 | req->end_io(req, ret); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | static void sas_host_smp_request(struct request_queue *q) |
| 183 | { |
| 184 | sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); |
| 185 | } |
| 186 | |
| 187 | static void sas_non_host_smp_request(struct request_queue *q) |
| 188 | { |
| 189 | struct sas_rphy *rphy = q->queuedata; |
| 190 | sas_smp_request(q, rphy_to_shost(rphy), rphy); |
| 191 | } |
| 192 | |
| 193 | static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy, |
| 194 | char *name) |
| 195 | { |
| 196 | struct request_queue *q; |
| 197 | int error; |
| 198 | |
| 199 | if (!to_sas_internal(shost->transportt)->f->smp_handler) { |
| 200 | printk("%s can't handle SMP requests\n", shost->hostt->name); |
| 201 | return 0; |
| 202 | } |
| 203 | |
| 204 | if (rphy) |
| 205 | q = blk_init_queue(sas_non_host_smp_request, NULL); |
| 206 | else |
| 207 | q = blk_init_queue(sas_host_smp_request, NULL); |
| 208 | if (!q) |
| 209 | return -ENOMEM; |
| 210 | |
| 211 | error = bsg_register_queue(q, name); |
| 212 | if (error) { |
| 213 | blk_cleanup_queue(q); |
| 214 | return -ENOMEM; |
| 215 | } |
| 216 | |
| 217 | if (rphy) |
| 218 | q->queuedata = rphy; |
| 219 | else |
| 220 | q->queuedata = shost; |
| 221 | |
| 222 | set_bit(QUEUE_FLAG_BIDI, &q->queue_flags); |
| 223 | |
| 224 | return 0; |
| 225 | } |
| 226 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 227 | /* |
| 228 | * SAS host attributes |
| 229 | */ |
| 230 | |
James Bottomley | 37be6ee | 2005-09-09 18:38:27 -0500 | [diff] [blame] | 231 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
| 232 | struct class_device *cdev) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 233 | { |
| 234 | struct Scsi_Host *shost = dev_to_shost(dev); |
| 235 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
FUJITA Tomonori | 7aa68e8 | 2007-07-09 12:52:06 +0900 | [diff] [blame^] | 236 | char name[BUS_ID_SIZE]; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 237 | |
| 238 | INIT_LIST_HEAD(&sas_host->rphy_list); |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 239 | mutex_init(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 240 | sas_host->next_target_id = 0; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 241 | sas_host->next_expander_id = 0; |
James Bottomley | c9fefeb | 2006-07-02 11:10:18 -0500 | [diff] [blame] | 242 | sas_host->next_port_id = 0; |
FUJITA Tomonori | 7aa68e8 | 2007-07-09 12:52:06 +0900 | [diff] [blame^] | 243 | |
| 244 | snprintf(name, sizeof(name), "sas_host%d", shost->host_no); |
| 245 | if (sas_bsg_initialize(shost, NULL, name)) |
| 246 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", |
| 247 | shost->host_no); |
| 248 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 249 | return 0; |
| 250 | } |
| 251 | |
| 252 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
| 253 | "sas_host", sas_host_setup, NULL, NULL); |
| 254 | |
| 255 | static int sas_host_match(struct attribute_container *cont, |
| 256 | struct device *dev) |
| 257 | { |
| 258 | struct Scsi_Host *shost; |
| 259 | struct sas_internal *i; |
| 260 | |
| 261 | if (!scsi_is_host_device(dev)) |
| 262 | return 0; |
| 263 | shost = dev_to_shost(dev); |
| 264 | |
| 265 | if (!shost->transportt) |
| 266 | return 0; |
| 267 | if (shost->transportt->host_attrs.ac.class != |
| 268 | &sas_host_class.class) |
| 269 | return 0; |
| 270 | |
| 271 | i = to_sas_internal(shost->transportt); |
| 272 | return &i->t.host_attrs.ac == cont; |
| 273 | } |
| 274 | |
| 275 | static int do_sas_phy_delete(struct device *dev, void *data) |
| 276 | { |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 277 | int pass = (int)(unsigned long)data; |
| 278 | |
| 279 | if (pass == 0 && scsi_is_sas_port(dev)) |
| 280 | sas_port_delete(dev_to_sas_port(dev)); |
| 281 | else if (pass == 1 && scsi_is_sas_phy(dev)) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 282 | sas_phy_delete(dev_to_phy(dev)); |
| 283 | return 0; |
| 284 | } |
| 285 | |
| 286 | /** |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 287 | * sas_remove_children -- tear down a devices SAS data structures |
| 288 | * @dev: device belonging to the sas object |
| 289 | * |
| 290 | * Removes all SAS PHYs and remote PHYs for a given object |
| 291 | */ |
| 292 | void sas_remove_children(struct device *dev) |
| 293 | { |
| 294 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); |
| 295 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); |
| 296 | } |
| 297 | EXPORT_SYMBOL(sas_remove_children); |
| 298 | |
| 299 | /** |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 300 | * sas_remove_host -- tear down a Scsi_Host's SAS data structures |
| 301 | * @shost: Scsi Host that is torn down |
| 302 | * |
| 303 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. |
| 304 | * Must be called just before scsi_remove_host for SAS HBAs. |
| 305 | */ |
| 306 | void sas_remove_host(struct Scsi_Host *shost) |
| 307 | { |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 308 | sas_remove_children(&shost->shost_gendev); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 309 | } |
| 310 | EXPORT_SYMBOL(sas_remove_host); |
| 311 | |
| 312 | |
| 313 | /* |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 314 | * SAS Phy attributes |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 315 | */ |
| 316 | |
| 317 | #define sas_phy_show_simple(field, name, format_string, cast) \ |
| 318 | static ssize_t \ |
| 319 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ |
| 320 | { \ |
| 321 | struct sas_phy *phy = transport_class_to_phy(cdev); \ |
| 322 | \ |
| 323 | return snprintf(buf, 20, format_string, cast phy->field); \ |
| 324 | } |
| 325 | |
| 326 | #define sas_phy_simple_attr(field, name, format_string, type) \ |
| 327 | sas_phy_show_simple(field, name, format_string, (type)) \ |
| 328 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
| 329 | |
| 330 | #define sas_phy_show_protocol(field, name) \ |
| 331 | static ssize_t \ |
| 332 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ |
| 333 | { \ |
| 334 | struct sas_phy *phy = transport_class_to_phy(cdev); \ |
| 335 | \ |
| 336 | if (!phy->field) \ |
| 337 | return snprintf(buf, 20, "none\n"); \ |
| 338 | return get_sas_protocol_names(phy->field, buf); \ |
| 339 | } |
| 340 | |
| 341 | #define sas_phy_protocol_attr(field, name) \ |
| 342 | sas_phy_show_protocol(field, name) \ |
| 343 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
| 344 | |
| 345 | #define sas_phy_show_linkspeed(field) \ |
| 346 | static ssize_t \ |
| 347 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ |
| 348 | { \ |
| 349 | struct sas_phy *phy = transport_class_to_phy(cdev); \ |
| 350 | \ |
| 351 | return get_sas_linkspeed_names(phy->field, buf); \ |
| 352 | } |
| 353 | |
James Bottomley | d24e1ee | 2006-09-06 19:25:22 -0500 | [diff] [blame] | 354 | /* Fudge to tell if we're minimum or maximum */ |
| 355 | #define sas_phy_store_linkspeed(field) \ |
| 356 | static ssize_t \ |
| 357 | store_sas_phy_##field(struct class_device *cdev, const char *buf, \ |
| 358 | size_t count) \ |
| 359 | { \ |
| 360 | struct sas_phy *phy = transport_class_to_phy(cdev); \ |
| 361 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
| 362 | struct sas_internal *i = to_sas_internal(shost->transportt); \ |
| 363 | u32 value; \ |
| 364 | struct sas_phy_linkrates rates = {0}; \ |
| 365 | int error; \ |
| 366 | \ |
| 367 | error = set_sas_linkspeed_names(&value, buf); \ |
| 368 | if (error) \ |
| 369 | return error; \ |
| 370 | rates.field = value; \ |
| 371 | error = i->f->set_phy_speed(phy, &rates); \ |
| 372 | \ |
| 373 | return error ? error : count; \ |
| 374 | } |
| 375 | |
| 376 | #define sas_phy_linkspeed_rw_attr(field) \ |
| 377 | sas_phy_show_linkspeed(field) \ |
| 378 | sas_phy_store_linkspeed(field) \ |
| 379 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ |
| 380 | store_sas_phy_##field) |
| 381 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 382 | #define sas_phy_linkspeed_attr(field) \ |
| 383 | sas_phy_show_linkspeed(field) \ |
| 384 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
| 385 | |
James Bottomley | d24e1ee | 2006-09-06 19:25:22 -0500 | [diff] [blame] | 386 | |
Christoph Hellwig | c3ee74c | 2005-09-19 21:59:42 +0200 | [diff] [blame] | 387 | #define sas_phy_show_linkerror(field) \ |
| 388 | static ssize_t \ |
| 389 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ |
| 390 | { \ |
| 391 | struct sas_phy *phy = transport_class_to_phy(cdev); \ |
| 392 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
| 393 | struct sas_internal *i = to_sas_internal(shost->transportt); \ |
| 394 | int error; \ |
| 395 | \ |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 396 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
Christoph Hellwig | c3ee74c | 2005-09-19 21:59:42 +0200 | [diff] [blame] | 397 | if (error) \ |
| 398 | return error; \ |
| 399 | return snprintf(buf, 20, "%u\n", phy->field); \ |
| 400 | } |
| 401 | |
| 402 | #define sas_phy_linkerror_attr(field) \ |
| 403 | sas_phy_show_linkerror(field) \ |
| 404 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
| 405 | |
| 406 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 407 | static ssize_t |
| 408 | show_sas_device_type(struct class_device *cdev, char *buf) |
| 409 | { |
| 410 | struct sas_phy *phy = transport_class_to_phy(cdev); |
| 411 | |
| 412 | if (!phy->identify.device_type) |
| 413 | return snprintf(buf, 20, "none\n"); |
| 414 | return get_sas_device_type_names(phy->identify.device_type, buf); |
| 415 | } |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 416 | static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
| 417 | |
Darrick J. Wong | acbf167 | 2007-01-11 14:14:57 -0800 | [diff] [blame] | 418 | static ssize_t do_sas_phy_enable(struct class_device *cdev, |
| 419 | size_t count, int enable) |
| 420 | { |
| 421 | struct sas_phy *phy = transport_class_to_phy(cdev); |
| 422 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
| 423 | struct sas_internal *i = to_sas_internal(shost->transportt); |
| 424 | int error; |
| 425 | |
| 426 | error = i->f->phy_enable(phy, enable); |
| 427 | if (error) |
| 428 | return error; |
| 429 | phy->enabled = enable; |
| 430 | return count; |
| 431 | }; |
| 432 | |
| 433 | static ssize_t store_sas_phy_enable(struct class_device *cdev, |
| 434 | const char *buf, size_t count) |
| 435 | { |
| 436 | if (count < 1) |
| 437 | return -EINVAL; |
| 438 | |
| 439 | switch (buf[0]) { |
| 440 | case '0': |
| 441 | do_sas_phy_enable(cdev, count, 0); |
| 442 | break; |
| 443 | case '1': |
| 444 | do_sas_phy_enable(cdev, count, 1); |
| 445 | break; |
| 446 | default: |
| 447 | return -EINVAL; |
| 448 | } |
| 449 | |
| 450 | return count; |
| 451 | } |
| 452 | |
| 453 | static ssize_t show_sas_phy_enable(struct class_device *cdev, char *buf) |
| 454 | { |
| 455 | struct sas_phy *phy = transport_class_to_phy(cdev); |
| 456 | |
| 457 | return snprintf(buf, 20, "%d", phy->enabled); |
| 458 | } |
| 459 | |
| 460 | static CLASS_DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, |
| 461 | store_sas_phy_enable); |
| 462 | |
Christoph Hellwig | 07ba3a9 | 2005-10-19 20:01:31 +0200 | [diff] [blame] | 463 | static ssize_t do_sas_phy_reset(struct class_device *cdev, |
| 464 | size_t count, int hard_reset) |
| 465 | { |
| 466 | struct sas_phy *phy = transport_class_to_phy(cdev); |
| 467 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
| 468 | struct sas_internal *i = to_sas_internal(shost->transportt); |
| 469 | int error; |
| 470 | |
Christoph Hellwig | 07ba3a9 | 2005-10-19 20:01:31 +0200 | [diff] [blame] | 471 | error = i->f->phy_reset(phy, hard_reset); |
| 472 | if (error) |
| 473 | return error; |
| 474 | return count; |
| 475 | }; |
| 476 | |
| 477 | static ssize_t store_sas_link_reset(struct class_device *cdev, |
| 478 | const char *buf, size_t count) |
| 479 | { |
| 480 | return do_sas_phy_reset(cdev, count, 0); |
| 481 | } |
| 482 | static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); |
| 483 | |
| 484 | static ssize_t store_sas_hard_reset(struct class_device *cdev, |
| 485 | const char *buf, size_t count) |
| 486 | { |
| 487 | return do_sas_phy_reset(cdev, count, 1); |
| 488 | } |
| 489 | static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); |
| 490 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 491 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
| 492 | initiator_port_protocols); |
| 493 | sas_phy_protocol_attr(identify.target_port_protocols, |
| 494 | target_port_protocols); |
| 495 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", |
| 496 | unsigned long long); |
| 497 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); |
James Bottomley | c9fefeb | 2006-07-02 11:10:18 -0500 | [diff] [blame] | 498 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 499 | sas_phy_linkspeed_attr(negotiated_linkrate); |
| 500 | sas_phy_linkspeed_attr(minimum_linkrate_hw); |
James Bottomley | d24e1ee | 2006-09-06 19:25:22 -0500 | [diff] [blame] | 501 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 502 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
James Bottomley | d24e1ee | 2006-09-06 19:25:22 -0500 | [diff] [blame] | 503 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
Christoph Hellwig | c3ee74c | 2005-09-19 21:59:42 +0200 | [diff] [blame] | 504 | sas_phy_linkerror_attr(invalid_dword_count); |
| 505 | sas_phy_linkerror_attr(running_disparity_error_count); |
| 506 | sas_phy_linkerror_attr(loss_of_dword_sync_count); |
| 507 | sas_phy_linkerror_attr(phy_reset_problem_count); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 508 | |
| 509 | |
| 510 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, |
| 511 | "sas_phy", NULL, NULL, NULL); |
| 512 | |
| 513 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) |
| 514 | { |
| 515 | struct Scsi_Host *shost; |
| 516 | struct sas_internal *i; |
| 517 | |
| 518 | if (!scsi_is_sas_phy(dev)) |
| 519 | return 0; |
| 520 | shost = dev_to_shost(dev->parent); |
| 521 | |
| 522 | if (!shost->transportt) |
| 523 | return 0; |
| 524 | if (shost->transportt->host_attrs.ac.class != |
| 525 | &sas_host_class.class) |
| 526 | return 0; |
| 527 | |
| 528 | i = to_sas_internal(shost->transportt); |
| 529 | return &i->phy_attr_cont.ac == cont; |
| 530 | } |
| 531 | |
| 532 | static void sas_phy_release(struct device *dev) |
| 533 | { |
| 534 | struct sas_phy *phy = dev_to_phy(dev); |
| 535 | |
| 536 | put_device(dev->parent); |
| 537 | kfree(phy); |
| 538 | } |
| 539 | |
| 540 | /** |
| 541 | * sas_phy_alloc -- allocates and initialize a SAS PHY structure |
| 542 | * @parent: Parent device |
Moore, Eric | d99ca41 | 2006-01-26 16:20:02 -0700 | [diff] [blame] | 543 | * @number: Phy index |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 544 | * |
| 545 | * Allocates an SAS PHY structure. It will be added in the device tree |
| 546 | * below the device specified by @parent, which has to be either a Scsi_Host |
| 547 | * or sas_rphy. |
| 548 | * |
| 549 | * Returns: |
| 550 | * SAS PHY allocated or %NULL if the allocation failed. |
| 551 | */ |
| 552 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) |
| 553 | { |
| 554 | struct Scsi_Host *shost = dev_to_shost(parent); |
| 555 | struct sas_phy *phy; |
| 556 | |
Jes Sorensen | 24669f75 | 2006-01-16 10:31:18 -0500 | [diff] [blame] | 557 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 558 | if (!phy) |
| 559 | return NULL; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 560 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 561 | phy->number = number; |
Darrick J. Wong | acbf167 | 2007-01-11 14:14:57 -0800 | [diff] [blame] | 562 | phy->enabled = 1; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 563 | |
| 564 | device_initialize(&phy->dev); |
| 565 | phy->dev.parent = get_device(parent); |
| 566 | phy->dev.release = sas_phy_release; |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 567 | INIT_LIST_HEAD(&phy->port_siblings); |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 568 | if (scsi_is_sas_expander_device(parent)) { |
| 569 | struct sas_rphy *rphy = dev_to_rphy(parent); |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 570 | sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no, |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 571 | rphy->scsi_target_id, number); |
| 572 | } else |
| 573 | sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 574 | |
| 575 | transport_setup_device(&phy->dev); |
| 576 | |
| 577 | return phy; |
| 578 | } |
| 579 | EXPORT_SYMBOL(sas_phy_alloc); |
| 580 | |
| 581 | /** |
Uwe Kleine-König | 1b3c371 | 2007-02-17 19:23:03 +0100 | [diff] [blame] | 582 | * sas_phy_add -- add a SAS PHY to the device hierarchy |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 583 | * @phy: The PHY to be added |
| 584 | * |
| 585 | * Publishes a SAS PHY to the rest of the system. |
| 586 | */ |
| 587 | int sas_phy_add(struct sas_phy *phy) |
| 588 | { |
| 589 | int error; |
| 590 | |
| 591 | error = device_add(&phy->dev); |
| 592 | if (!error) { |
| 593 | transport_add_device(&phy->dev); |
| 594 | transport_configure_device(&phy->dev); |
| 595 | } |
| 596 | |
| 597 | return error; |
| 598 | } |
| 599 | EXPORT_SYMBOL(sas_phy_add); |
| 600 | |
| 601 | /** |
| 602 | * sas_phy_free -- free a SAS PHY |
| 603 | * @phy: SAS PHY to free |
| 604 | * |
| 605 | * Frees the specified SAS PHY. |
| 606 | * |
| 607 | * Note: |
| 608 | * This function must only be called on a PHY that has not |
| 609 | * sucessfully been added using sas_phy_add(). |
| 610 | */ |
| 611 | void sas_phy_free(struct sas_phy *phy) |
| 612 | { |
| 613 | transport_destroy_device(&phy->dev); |
Mike Anderson | 92aab64 | 2006-03-27 09:37:28 -0800 | [diff] [blame] | 614 | put_device(&phy->dev); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 615 | } |
| 616 | EXPORT_SYMBOL(sas_phy_free); |
| 617 | |
| 618 | /** |
| 619 | * sas_phy_delete -- remove SAS PHY |
| 620 | * @phy: SAS PHY to remove |
| 621 | * |
| 622 | * Removes the specified SAS PHY. If the SAS PHY has an |
| 623 | * associated remote PHY it is removed before. |
| 624 | */ |
| 625 | void |
| 626 | sas_phy_delete(struct sas_phy *phy) |
| 627 | { |
| 628 | struct device *dev = &phy->dev; |
| 629 | |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 630 | /* this happens if the phy is still part of a port when deleted */ |
| 631 | BUG_ON(!list_empty(&phy->port_siblings)); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 632 | |
| 633 | transport_remove_device(dev); |
| 634 | device_del(dev); |
| 635 | transport_destroy_device(dev); |
Mike Anderson | 92aab64 | 2006-03-27 09:37:28 -0800 | [diff] [blame] | 636 | put_device(dev); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 637 | } |
| 638 | EXPORT_SYMBOL(sas_phy_delete); |
| 639 | |
| 640 | /** |
| 641 | * scsi_is_sas_phy -- check if a struct device represents a SAS PHY |
| 642 | * @dev: device to check |
| 643 | * |
| 644 | * Returns: |
| 645 | * %1 if the device represents a SAS PHY, %0 else |
| 646 | */ |
| 647 | int scsi_is_sas_phy(const struct device *dev) |
| 648 | { |
| 649 | return dev->release == sas_phy_release; |
| 650 | } |
| 651 | EXPORT_SYMBOL(scsi_is_sas_phy); |
| 652 | |
| 653 | /* |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 654 | * SAS Port attributes |
| 655 | */ |
| 656 | #define sas_port_show_simple(field, name, format_string, cast) \ |
| 657 | static ssize_t \ |
| 658 | show_sas_port_##name(struct class_device *cdev, char *buf) \ |
| 659 | { \ |
| 660 | struct sas_port *port = transport_class_to_sas_port(cdev); \ |
| 661 | \ |
| 662 | return snprintf(buf, 20, format_string, cast port->field); \ |
| 663 | } |
| 664 | |
| 665 | #define sas_port_simple_attr(field, name, format_string, type) \ |
| 666 | sas_port_show_simple(field, name, format_string, (type)) \ |
| 667 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) |
| 668 | |
| 669 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); |
| 670 | |
| 671 | static DECLARE_TRANSPORT_CLASS(sas_port_class, |
| 672 | "sas_port", NULL, NULL, NULL); |
| 673 | |
| 674 | static int sas_port_match(struct attribute_container *cont, struct device *dev) |
| 675 | { |
| 676 | struct Scsi_Host *shost; |
| 677 | struct sas_internal *i; |
| 678 | |
| 679 | if (!scsi_is_sas_port(dev)) |
| 680 | return 0; |
| 681 | shost = dev_to_shost(dev->parent); |
| 682 | |
| 683 | if (!shost->transportt) |
| 684 | return 0; |
| 685 | if (shost->transportt->host_attrs.ac.class != |
| 686 | &sas_host_class.class) |
| 687 | return 0; |
| 688 | |
| 689 | i = to_sas_internal(shost->transportt); |
| 690 | return &i->port_attr_cont.ac == cont; |
| 691 | } |
| 692 | |
| 693 | |
| 694 | static void sas_port_release(struct device *dev) |
| 695 | { |
| 696 | struct sas_port *port = dev_to_sas_port(dev); |
| 697 | |
| 698 | BUG_ON(!list_empty(&port->phy_list)); |
| 699 | |
| 700 | put_device(dev->parent); |
| 701 | kfree(port); |
| 702 | } |
| 703 | |
| 704 | static void sas_port_create_link(struct sas_port *port, |
| 705 | struct sas_phy *phy) |
| 706 | { |
Darrick J. Wong | 2143496 | 2007-01-26 14:08:46 -0800 | [diff] [blame] | 707 | int res; |
| 708 | |
| 709 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, |
| 710 | phy->dev.bus_id); |
| 711 | if (res) |
| 712 | goto err; |
| 713 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); |
| 714 | if (res) |
| 715 | goto err; |
| 716 | return; |
| 717 | err: |
| 718 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", |
| 719 | __FUNCTION__, res); |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 720 | } |
| 721 | |
| 722 | static void sas_port_delete_link(struct sas_port *port, |
| 723 | struct sas_phy *phy) |
| 724 | { |
| 725 | sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id); |
| 726 | sysfs_remove_link(&phy->dev.kobj, "port"); |
| 727 | } |
| 728 | |
| 729 | /** sas_port_alloc - allocate and initialize a SAS port structure |
| 730 | * |
| 731 | * @parent: parent device |
| 732 | * @port_id: port number |
| 733 | * |
| 734 | * Allocates a SAS port structure. It will be added to the device tree |
| 735 | * below the device specified by @parent which must be either a Scsi_Host |
| 736 | * or a sas_expander_device. |
| 737 | * |
| 738 | * Returns %NULL on error |
| 739 | */ |
| 740 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) |
| 741 | { |
| 742 | struct Scsi_Host *shost = dev_to_shost(parent); |
| 743 | struct sas_port *port; |
| 744 | |
| 745 | port = kzalloc(sizeof(*port), GFP_KERNEL); |
| 746 | if (!port) |
| 747 | return NULL; |
| 748 | |
| 749 | port->port_identifier = port_id; |
| 750 | |
| 751 | device_initialize(&port->dev); |
| 752 | |
| 753 | port->dev.parent = get_device(parent); |
| 754 | port->dev.release = sas_port_release; |
| 755 | |
| 756 | mutex_init(&port->phy_list_mutex); |
| 757 | INIT_LIST_HEAD(&port->phy_list); |
| 758 | |
| 759 | if (scsi_is_sas_expander_device(parent)) { |
| 760 | struct sas_rphy *rphy = dev_to_rphy(parent); |
| 761 | sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no, |
| 762 | rphy->scsi_target_id, port->port_identifier); |
| 763 | } else |
| 764 | sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no, |
| 765 | port->port_identifier); |
| 766 | |
| 767 | transport_setup_device(&port->dev); |
| 768 | |
| 769 | return port; |
| 770 | } |
| 771 | EXPORT_SYMBOL(sas_port_alloc); |
| 772 | |
James Bottomley | c9fefeb | 2006-07-02 11:10:18 -0500 | [diff] [blame] | 773 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
| 774 | * |
| 775 | * @parent: parent device |
| 776 | * |
| 777 | * Allocates a SAS port structure and a number to go with it. This |
| 778 | * interface is really for adapters where the port number has no |
| 779 | * meansing, so the sas class should manage them. It will be added to |
| 780 | * the device tree below the device specified by @parent which must be |
| 781 | * either a Scsi_Host or a sas_expander_device. |
| 782 | * |
| 783 | * Returns %NULL on error |
| 784 | */ |
| 785 | struct sas_port *sas_port_alloc_num(struct device *parent) |
| 786 | { |
| 787 | int index; |
| 788 | struct Scsi_Host *shost = dev_to_shost(parent); |
| 789 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
| 790 | |
| 791 | /* FIXME: use idr for this eventually */ |
| 792 | mutex_lock(&sas_host->lock); |
| 793 | if (scsi_is_sas_expander_device(parent)) { |
| 794 | struct sas_rphy *rphy = dev_to_rphy(parent); |
| 795 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); |
| 796 | |
| 797 | index = exp->next_port_id++; |
| 798 | } else |
| 799 | index = sas_host->next_port_id++; |
| 800 | mutex_unlock(&sas_host->lock); |
| 801 | return sas_port_alloc(parent, index); |
| 802 | } |
| 803 | EXPORT_SYMBOL(sas_port_alloc_num); |
| 804 | |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 805 | /** |
| 806 | * sas_port_add - add a SAS port to the device hierarchy |
| 807 | * |
| 808 | * @port: port to be added |
| 809 | * |
| 810 | * publishes a port to the rest of the system |
| 811 | */ |
| 812 | int sas_port_add(struct sas_port *port) |
| 813 | { |
| 814 | int error; |
| 815 | |
| 816 | /* No phys should be added until this is made visible */ |
| 817 | BUG_ON(!list_empty(&port->phy_list)); |
| 818 | |
| 819 | error = device_add(&port->dev); |
| 820 | |
| 821 | if (error) |
| 822 | return error; |
| 823 | |
| 824 | transport_add_device(&port->dev); |
| 825 | transport_configure_device(&port->dev); |
| 826 | |
| 827 | return 0; |
| 828 | } |
| 829 | EXPORT_SYMBOL(sas_port_add); |
| 830 | |
| 831 | /** |
| 832 | * sas_port_free -- free a SAS PORT |
| 833 | * @port: SAS PORT to free |
| 834 | * |
| 835 | * Frees the specified SAS PORT. |
| 836 | * |
| 837 | * Note: |
| 838 | * This function must only be called on a PORT that has not |
| 839 | * sucessfully been added using sas_port_add(). |
| 840 | */ |
| 841 | void sas_port_free(struct sas_port *port) |
| 842 | { |
| 843 | transport_destroy_device(&port->dev); |
| 844 | put_device(&port->dev); |
| 845 | } |
| 846 | EXPORT_SYMBOL(sas_port_free); |
| 847 | |
| 848 | /** |
| 849 | * sas_port_delete -- remove SAS PORT |
| 850 | * @port: SAS PORT to remove |
| 851 | * |
| 852 | * Removes the specified SAS PORT. If the SAS PORT has an |
| 853 | * associated phys, unlink them from the port as well. |
| 854 | */ |
| 855 | void sas_port_delete(struct sas_port *port) |
| 856 | { |
| 857 | struct device *dev = &port->dev; |
| 858 | struct sas_phy *phy, *tmp_phy; |
| 859 | |
| 860 | if (port->rphy) { |
| 861 | sas_rphy_delete(port->rphy); |
| 862 | port->rphy = NULL; |
| 863 | } |
| 864 | |
| 865 | mutex_lock(&port->phy_list_mutex); |
| 866 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, |
| 867 | port_siblings) { |
| 868 | sas_port_delete_link(port, phy); |
| 869 | list_del_init(&phy->port_siblings); |
| 870 | } |
| 871 | mutex_unlock(&port->phy_list_mutex); |
| 872 | |
James Bottomley | a0e1b6e | 2006-07-09 12:38:19 -0500 | [diff] [blame] | 873 | if (port->is_backlink) { |
| 874 | struct device *parent = port->dev.parent; |
| 875 | |
| 876 | sysfs_remove_link(&port->dev.kobj, parent->bus_id); |
| 877 | port->is_backlink = 0; |
| 878 | } |
| 879 | |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 880 | transport_remove_device(dev); |
| 881 | device_del(dev); |
| 882 | transport_destroy_device(dev); |
| 883 | put_device(dev); |
| 884 | } |
| 885 | EXPORT_SYMBOL(sas_port_delete); |
| 886 | |
| 887 | /** |
| 888 | * scsi_is_sas_port -- check if a struct device represents a SAS port |
| 889 | * @dev: device to check |
| 890 | * |
| 891 | * Returns: |
| 892 | * %1 if the device represents a SAS Port, %0 else |
| 893 | */ |
| 894 | int scsi_is_sas_port(const struct device *dev) |
| 895 | { |
| 896 | return dev->release == sas_port_release; |
| 897 | } |
| 898 | EXPORT_SYMBOL(scsi_is_sas_port); |
| 899 | |
| 900 | /** |
| 901 | * sas_port_add_phy - add another phy to a port to form a wide port |
| 902 | * @port: port to add the phy to |
| 903 | * @phy: phy to add |
| 904 | * |
| 905 | * When a port is initially created, it is empty (has no phys). All |
| 906 | * ports must have at least one phy to operated, and all wide ports |
| 907 | * must have at least two. The current code makes no difference |
| 908 | * between ports and wide ports, but the only object that can be |
| 909 | * connected to a remote device is a port, so ports must be formed on |
| 910 | * all devices with phys if they're connected to anything. |
| 911 | */ |
| 912 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) |
| 913 | { |
| 914 | mutex_lock(&port->phy_list_mutex); |
| 915 | if (unlikely(!list_empty(&phy->port_siblings))) { |
| 916 | /* make sure we're already on this port */ |
| 917 | struct sas_phy *tmp; |
| 918 | |
| 919 | list_for_each_entry(tmp, &port->phy_list, port_siblings) |
| 920 | if (tmp == phy) |
| 921 | break; |
| 922 | /* If this trips, you added a phy that was already |
| 923 | * part of a different port */ |
| 924 | if (unlikely(tmp != phy)) { |
| 925 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id); |
| 926 | BUG(); |
| 927 | } |
| 928 | } else { |
| 929 | sas_port_create_link(port, phy); |
| 930 | list_add_tail(&phy->port_siblings, &port->phy_list); |
| 931 | port->num_phys++; |
| 932 | } |
| 933 | mutex_unlock(&port->phy_list_mutex); |
| 934 | } |
| 935 | EXPORT_SYMBOL(sas_port_add_phy); |
| 936 | |
| 937 | /** |
| 938 | * sas_port_delete_phy - remove a phy from a port or wide port |
| 939 | * @port: port to remove the phy from |
| 940 | * @phy: phy to remove |
| 941 | * |
| 942 | * This operation is used for tearing down ports again. It must be |
| 943 | * done to every port or wide port before calling sas_port_delete. |
| 944 | */ |
| 945 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) |
| 946 | { |
| 947 | mutex_lock(&port->phy_list_mutex); |
| 948 | sas_port_delete_link(port, phy); |
| 949 | list_del_init(&phy->port_siblings); |
| 950 | port->num_phys--; |
| 951 | mutex_unlock(&port->phy_list_mutex); |
| 952 | } |
| 953 | EXPORT_SYMBOL(sas_port_delete_phy); |
| 954 | |
James Bottomley | a0e1b6e | 2006-07-09 12:38:19 -0500 | [diff] [blame] | 955 | void sas_port_mark_backlink(struct sas_port *port) |
| 956 | { |
Darrick J. Wong | 2143496 | 2007-01-26 14:08:46 -0800 | [diff] [blame] | 957 | int res; |
James Bottomley | a0e1b6e | 2006-07-09 12:38:19 -0500 | [diff] [blame] | 958 | struct device *parent = port->dev.parent->parent->parent; |
| 959 | |
| 960 | if (port->is_backlink) |
| 961 | return; |
| 962 | port->is_backlink = 1; |
Darrick J. Wong | 2143496 | 2007-01-26 14:08:46 -0800 | [diff] [blame] | 963 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
| 964 | parent->bus_id); |
| 965 | if (res) |
| 966 | goto err; |
| 967 | return; |
| 968 | err: |
| 969 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", |
| 970 | __FUNCTION__, res); |
James Bottomley | a0e1b6e | 2006-07-09 12:38:19 -0500 | [diff] [blame] | 971 | |
| 972 | } |
| 973 | EXPORT_SYMBOL(sas_port_mark_backlink); |
| 974 | |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 975 | /* |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 976 | * SAS remote PHY attributes. |
| 977 | */ |
| 978 | |
| 979 | #define sas_rphy_show_simple(field, name, format_string, cast) \ |
| 980 | static ssize_t \ |
| 981 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ |
| 982 | { \ |
| 983 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ |
| 984 | \ |
| 985 | return snprintf(buf, 20, format_string, cast rphy->field); \ |
| 986 | } |
| 987 | |
| 988 | #define sas_rphy_simple_attr(field, name, format_string, type) \ |
| 989 | sas_rphy_show_simple(field, name, format_string, (type)) \ |
| 990 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
| 991 | show_sas_rphy_##name, NULL) |
| 992 | |
| 993 | #define sas_rphy_show_protocol(field, name) \ |
| 994 | static ssize_t \ |
| 995 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ |
| 996 | { \ |
| 997 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ |
| 998 | \ |
| 999 | if (!rphy->field) \ |
| 1000 | return snprintf(buf, 20, "none\n"); \ |
| 1001 | return get_sas_protocol_names(rphy->field, buf); \ |
| 1002 | } |
| 1003 | |
| 1004 | #define sas_rphy_protocol_attr(field, name) \ |
| 1005 | sas_rphy_show_protocol(field, name) \ |
| 1006 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
| 1007 | show_sas_rphy_##name, NULL) |
| 1008 | |
| 1009 | static ssize_t |
| 1010 | show_sas_rphy_device_type(struct class_device *cdev, char *buf) |
| 1011 | { |
| 1012 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); |
| 1013 | |
| 1014 | if (!rphy->identify.device_type) |
| 1015 | return snprintf(buf, 20, "none\n"); |
| 1016 | return get_sas_device_type_names( |
| 1017 | rphy->identify.device_type, buf); |
| 1018 | } |
| 1019 | |
| 1020 | static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO, |
| 1021 | show_sas_rphy_device_type, NULL); |
| 1022 | |
Christoph Hellwig | a012564 | 2006-02-16 13:31:47 +0100 | [diff] [blame] | 1023 | static ssize_t |
| 1024 | show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf) |
| 1025 | { |
| 1026 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); |
| 1027 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
| 1028 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
| 1029 | struct sas_internal *i = to_sas_internal(shost->transportt); |
| 1030 | u64 identifier; |
| 1031 | int error; |
| 1032 | |
| 1033 | /* |
| 1034 | * Only devices behind an expander are supported, because the |
| 1035 | * enclosure identifier is a SMP feature. |
| 1036 | */ |
James Bottomley | f4ad7b5 | 2006-08-25 13:48:18 -0500 | [diff] [blame] | 1037 | if (scsi_is_sas_phy_local(phy)) |
Christoph Hellwig | a012564 | 2006-02-16 13:31:47 +0100 | [diff] [blame] | 1038 | return -EINVAL; |
| 1039 | |
| 1040 | error = i->f->get_enclosure_identifier(rphy, &identifier); |
| 1041 | if (error) |
| 1042 | return error; |
| 1043 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); |
| 1044 | } |
| 1045 | |
| 1046 | static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, |
| 1047 | show_sas_rphy_enclosure_identifier, NULL); |
| 1048 | |
| 1049 | static ssize_t |
| 1050 | show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf) |
| 1051 | { |
| 1052 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); |
| 1053 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
| 1054 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
| 1055 | struct sas_internal *i = to_sas_internal(shost->transportt); |
| 1056 | int val; |
| 1057 | |
James Bottomley | f4ad7b5 | 2006-08-25 13:48:18 -0500 | [diff] [blame] | 1058 | if (scsi_is_sas_phy_local(phy)) |
Christoph Hellwig | a012564 | 2006-02-16 13:31:47 +0100 | [diff] [blame] | 1059 | return -EINVAL; |
| 1060 | |
| 1061 | val = i->f->get_bay_identifier(rphy); |
| 1062 | if (val < 0) |
| 1063 | return val; |
| 1064 | return sprintf(buf, "%d\n", val); |
| 1065 | } |
| 1066 | |
| 1067 | static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, |
| 1068 | show_sas_rphy_bay_identifier, NULL); |
| 1069 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1070 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
| 1071 | initiator_port_protocols); |
| 1072 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); |
| 1073 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", |
| 1074 | unsigned long long); |
| 1075 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); |
| 1076 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1077 | /* only need 8 bytes of data plus header (4 or 8) */ |
| 1078 | #define BUF_SIZE 64 |
| 1079 | |
| 1080 | int sas_read_port_mode_page(struct scsi_device *sdev) |
| 1081 | { |
| 1082 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; |
| 1083 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); |
| 1084 | struct sas_end_device *rdev; |
| 1085 | struct scsi_mode_data mode_data; |
| 1086 | int res, error; |
| 1087 | |
| 1088 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); |
| 1089 | |
| 1090 | rdev = rphy_to_end_device(rphy); |
| 1091 | |
| 1092 | if (!buffer) |
| 1093 | return -ENOMEM; |
| 1094 | |
| 1095 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, |
| 1096 | &mode_data, NULL); |
| 1097 | |
| 1098 | error = -EINVAL; |
| 1099 | if (!scsi_status_is_good(res)) |
| 1100 | goto out; |
| 1101 | |
| 1102 | msdata = buffer + mode_data.header_length + |
| 1103 | mode_data.block_descriptor_length; |
| 1104 | |
| 1105 | if (msdata - buffer > BUF_SIZE - 8) |
| 1106 | goto out; |
| 1107 | |
| 1108 | error = 0; |
| 1109 | |
| 1110 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; |
| 1111 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; |
| 1112 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; |
| 1113 | |
| 1114 | out: |
| 1115 | kfree(buffer); |
| 1116 | return error; |
| 1117 | } |
| 1118 | EXPORT_SYMBOL(sas_read_port_mode_page); |
| 1119 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1120 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
| 1121 | "sas_end_device", NULL, NULL, NULL); |
| 1122 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1123 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
| 1124 | static ssize_t \ |
| 1125 | show_sas_end_dev_##name(struct class_device *cdev, char *buf) \ |
| 1126 | { \ |
| 1127 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ |
| 1128 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ |
| 1129 | \ |
| 1130 | return snprintf(buf, 20, format_string, cast rdev->field); \ |
| 1131 | } |
| 1132 | |
| 1133 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ |
| 1134 | sas_end_dev_show_simple(field, name, format_string, (type)) \ |
| 1135 | static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ |
| 1136 | show_sas_end_dev_##name, NULL) |
| 1137 | |
| 1138 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); |
| 1139 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, |
| 1140 | "%d\n", int); |
| 1141 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, |
| 1142 | "%d\n", int); |
| 1143 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1144 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
| 1145 | "sas_expander", NULL, NULL, NULL); |
| 1146 | |
| 1147 | #define sas_expander_show_simple(field, name, format_string, cast) \ |
| 1148 | static ssize_t \ |
| 1149 | show_sas_expander_##name(struct class_device *cdev, char *buf) \ |
| 1150 | { \ |
| 1151 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ |
| 1152 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ |
| 1153 | \ |
| 1154 | return snprintf(buf, 20, format_string, cast edev->field); \ |
| 1155 | } |
| 1156 | |
| 1157 | #define sas_expander_simple_attr(field, name, format_string, type) \ |
| 1158 | sas_expander_show_simple(field, name, format_string, (type)) \ |
| 1159 | static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \ |
| 1160 | show_sas_expander_##name, NULL) |
| 1161 | |
| 1162 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); |
| 1163 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); |
| 1164 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); |
| 1165 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, |
| 1166 | "%s\n", char *); |
| 1167 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); |
| 1168 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", |
| 1169 | unsigned int); |
| 1170 | sas_expander_simple_attr(level, level, "%d\n", int); |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1171 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1172 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1173 | "sas_device", NULL, NULL, NULL); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1174 | |
| 1175 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) |
| 1176 | { |
| 1177 | struct Scsi_Host *shost; |
| 1178 | struct sas_internal *i; |
| 1179 | |
| 1180 | if (!scsi_is_sas_rphy(dev)) |
| 1181 | return 0; |
| 1182 | shost = dev_to_shost(dev->parent->parent); |
| 1183 | |
| 1184 | if (!shost->transportt) |
| 1185 | return 0; |
| 1186 | if (shost->transportt->host_attrs.ac.class != |
| 1187 | &sas_host_class.class) |
| 1188 | return 0; |
| 1189 | |
| 1190 | i = to_sas_internal(shost->transportt); |
| 1191 | return &i->rphy_attr_cont.ac == cont; |
| 1192 | } |
| 1193 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1194 | static int sas_end_dev_match(struct attribute_container *cont, |
| 1195 | struct device *dev) |
| 1196 | { |
| 1197 | struct Scsi_Host *shost; |
| 1198 | struct sas_internal *i; |
| 1199 | struct sas_rphy *rphy; |
| 1200 | |
| 1201 | if (!scsi_is_sas_rphy(dev)) |
| 1202 | return 0; |
| 1203 | shost = dev_to_shost(dev->parent->parent); |
| 1204 | rphy = dev_to_rphy(dev); |
| 1205 | |
| 1206 | if (!shost->transportt) |
| 1207 | return 0; |
| 1208 | if (shost->transportt->host_attrs.ac.class != |
| 1209 | &sas_host_class.class) |
| 1210 | return 0; |
| 1211 | |
| 1212 | i = to_sas_internal(shost->transportt); |
| 1213 | return &i->end_dev_attr_cont.ac == cont && |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1214 | rphy->identify.device_type == SAS_END_DEVICE; |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1215 | } |
| 1216 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1217 | static int sas_expander_match(struct attribute_container *cont, |
| 1218 | struct device *dev) |
| 1219 | { |
| 1220 | struct Scsi_Host *shost; |
| 1221 | struct sas_internal *i; |
| 1222 | struct sas_rphy *rphy; |
| 1223 | |
| 1224 | if (!scsi_is_sas_rphy(dev)) |
| 1225 | return 0; |
| 1226 | shost = dev_to_shost(dev->parent->parent); |
| 1227 | rphy = dev_to_rphy(dev); |
| 1228 | |
| 1229 | if (!shost->transportt) |
| 1230 | return 0; |
| 1231 | if (shost->transportt->host_attrs.ac.class != |
| 1232 | &sas_host_class.class) |
| 1233 | return 0; |
| 1234 | |
| 1235 | i = to_sas_internal(shost->transportt); |
| 1236 | return &i->expander_attr_cont.ac == cont && |
| 1237 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1238 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1239 | } |
| 1240 | |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1241 | static void sas_expander_release(struct device *dev) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1242 | { |
| 1243 | struct sas_rphy *rphy = dev_to_rphy(dev); |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1244 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1245 | |
| 1246 | put_device(dev->parent); |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1247 | kfree(edev); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1248 | } |
| 1249 | |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1250 | static void sas_end_device_release(struct device *dev) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1251 | { |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1252 | struct sas_rphy *rphy = dev_to_rphy(dev); |
| 1253 | struct sas_end_device *edev = rphy_to_end_device(rphy); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1254 | |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1255 | put_device(dev->parent); |
| 1256 | kfree(edev); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1257 | } |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1258 | |
| 1259 | /** |
James Bottomley | c5943d3 | 2006-06-12 09:09:18 -0500 | [diff] [blame] | 1260 | * sas_rphy_initialize - common rphy intialization |
| 1261 | * @rphy: rphy to initialise |
| 1262 | * |
| 1263 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to |
| 1264 | * initialise the common rphy component of each. |
| 1265 | */ |
| 1266 | static void sas_rphy_initialize(struct sas_rphy *rphy) |
| 1267 | { |
| 1268 | INIT_LIST_HEAD(&rphy->list); |
| 1269 | } |
| 1270 | |
| 1271 | /** |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1272 | * sas_end_device_alloc - allocate an rphy for an end device |
| 1273 | * |
| 1274 | * Allocates an SAS remote PHY structure, connected to @parent. |
| 1275 | * |
| 1276 | * Returns: |
| 1277 | * SAS PHY allocated or %NULL if the allocation failed. |
| 1278 | */ |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1279 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1280 | { |
| 1281 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); |
| 1282 | struct sas_end_device *rdev; |
| 1283 | |
| 1284 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); |
| 1285 | if (!rdev) { |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1286 | return NULL; |
| 1287 | } |
| 1288 | |
| 1289 | device_initialize(&rdev->rphy.dev); |
| 1290 | rdev->rphy.dev.parent = get_device(&parent->dev); |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1291 | rdev->rphy.dev.release = sas_end_device_release; |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1292 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
| 1293 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); |
| 1294 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d", |
| 1295 | shost->host_no, rphy->scsi_target_id, parent->port_identifier); |
| 1296 | } else |
| 1297 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d", |
| 1298 | shost->host_no, parent->port_identifier); |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1299 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
James Bottomley | c5943d3 | 2006-06-12 09:09:18 -0500 | [diff] [blame] | 1300 | sas_rphy_initialize(&rdev->rphy); |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1301 | transport_setup_device(&rdev->rphy.dev); |
| 1302 | |
FUJITA Tomonori | 7aa68e8 | 2007-07-09 12:52:06 +0900 | [diff] [blame^] | 1303 | if (sas_bsg_initialize(shost, &rdev->rphy, rdev->rphy.dev.bus_id)) |
| 1304 | printk("fail to a bsg device %s\n", rdev->rphy.dev.bus_id); |
| 1305 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1306 | return &rdev->rphy; |
| 1307 | } |
| 1308 | EXPORT_SYMBOL(sas_end_device_alloc); |
| 1309 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1310 | /** |
| 1311 | * sas_expander_alloc - allocate an rphy for an end device |
| 1312 | * |
| 1313 | * Allocates an SAS remote PHY structure, connected to @parent. |
| 1314 | * |
| 1315 | * Returns: |
| 1316 | * SAS PHY allocated or %NULL if the allocation failed. |
| 1317 | */ |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1318 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1319 | enum sas_device_type type) |
| 1320 | { |
| 1321 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); |
| 1322 | struct sas_expander_device *rdev; |
| 1323 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
| 1324 | |
| 1325 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && |
| 1326 | type != SAS_FANOUT_EXPANDER_DEVICE); |
| 1327 | |
| 1328 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); |
| 1329 | if (!rdev) { |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1330 | return NULL; |
| 1331 | } |
| 1332 | |
| 1333 | device_initialize(&rdev->rphy.dev); |
| 1334 | rdev->rphy.dev.parent = get_device(&parent->dev); |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1335 | rdev->rphy.dev.release = sas_expander_release; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1336 | mutex_lock(&sas_host->lock); |
| 1337 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; |
| 1338 | mutex_unlock(&sas_host->lock); |
| 1339 | sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d", |
| 1340 | shost->host_no, rdev->rphy.scsi_target_id); |
| 1341 | rdev->rphy.identify.device_type = type; |
James Bottomley | c5943d3 | 2006-06-12 09:09:18 -0500 | [diff] [blame] | 1342 | sas_rphy_initialize(&rdev->rphy); |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1343 | transport_setup_device(&rdev->rphy.dev); |
| 1344 | |
FUJITA Tomonori | 7aa68e8 | 2007-07-09 12:52:06 +0900 | [diff] [blame^] | 1345 | if (sas_bsg_initialize(shost, &rdev->rphy, rdev->rphy.dev.bus_id)) |
| 1346 | printk("fail to a bsg device %s\n", rdev->rphy.dev.bus_id); |
| 1347 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1348 | return &rdev->rphy; |
| 1349 | } |
| 1350 | EXPORT_SYMBOL(sas_expander_alloc); |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1351 | |
| 1352 | /** |
Uwe Kleine-König | 1b3c371 | 2007-02-17 19:23:03 +0100 | [diff] [blame] | 1353 | * sas_rphy_add -- add a SAS remote PHY to the device hierarchy |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1354 | * @rphy: The remote PHY to be added |
| 1355 | * |
| 1356 | * Publishes a SAS remote PHY to the rest of the system. |
| 1357 | */ |
| 1358 | int sas_rphy_add(struct sas_rphy *rphy) |
| 1359 | { |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1360 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1361 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
| 1362 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
| 1363 | struct sas_identify *identify = &rphy->identify; |
| 1364 | int error; |
| 1365 | |
| 1366 | if (parent->rphy) |
| 1367 | return -ENXIO; |
| 1368 | parent->rphy = rphy; |
| 1369 | |
| 1370 | error = device_add(&rphy->dev); |
| 1371 | if (error) |
| 1372 | return error; |
| 1373 | transport_add_device(&rphy->dev); |
| 1374 | transport_configure_device(&rphy->dev); |
| 1375 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1376 | mutex_lock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1377 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
| 1378 | if (identify->device_type == SAS_END_DEVICE && |
| 1379 | (identify->target_port_protocols & |
| 1380 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) |
| 1381 | rphy->scsi_target_id = sas_host->next_target_id++; |
James Bottomley | 7676f83 | 2006-04-14 09:47:59 -0500 | [diff] [blame] | 1382 | else if (identify->device_type == SAS_END_DEVICE) |
| 1383 | rphy->scsi_target_id = -1; |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1384 | mutex_unlock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1385 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1386 | if (identify->device_type == SAS_END_DEVICE && |
| 1387 | rphy->scsi_target_id != -1) { |
James Bottomley | e8bf394 | 2006-07-11 17:49:34 -0400 | [diff] [blame] | 1388 | scsi_scan_target(&rphy->dev, 0, |
Darrick J. Wong | c8490f3 | 2007-01-11 14:15:09 -0800 | [diff] [blame] | 1389 | rphy->scsi_target_id, SCAN_WILD_CARD, 0); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1390 | } |
| 1391 | |
| 1392 | return 0; |
| 1393 | } |
| 1394 | EXPORT_SYMBOL(sas_rphy_add); |
| 1395 | |
| 1396 | /** |
| 1397 | * sas_rphy_free -- free a SAS remote PHY |
| 1398 | * @rphy SAS remote PHY to free |
| 1399 | * |
| 1400 | * Frees the specified SAS remote PHY. |
| 1401 | * |
| 1402 | * Note: |
| 1403 | * This function must only be called on a remote |
| 1404 | * PHY that has not sucessfully been added using |
Darrick J. Wong | 6f63caa | 2007-01-26 14:08:43 -0800 | [diff] [blame] | 1405 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1406 | */ |
| 1407 | void sas_rphy_free(struct sas_rphy *rphy) |
| 1408 | { |
Mike Anderson | 92aab64 | 2006-03-27 09:37:28 -0800 | [diff] [blame] | 1409 | struct device *dev = &rphy->dev; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1410 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
| 1411 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
| 1412 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1413 | mutex_lock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1414 | list_del(&rphy->list); |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1415 | mutex_unlock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1416 | |
Mike Anderson | 92aab64 | 2006-03-27 09:37:28 -0800 | [diff] [blame] | 1417 | transport_destroy_device(dev); |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1418 | |
Mike Anderson | 92aab64 | 2006-03-27 09:37:28 -0800 | [diff] [blame] | 1419 | put_device(dev); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1420 | } |
| 1421 | EXPORT_SYMBOL(sas_rphy_free); |
| 1422 | |
| 1423 | /** |
Darrick J. Wong | 6f63caa | 2007-01-26 14:08:43 -0800 | [diff] [blame] | 1424 | * sas_rphy_delete -- remove and free SAS remote PHY |
| 1425 | * @rphy: SAS remote PHY to remove and free |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1426 | * |
Darrick J. Wong | 6f63caa | 2007-01-26 14:08:43 -0800 | [diff] [blame] | 1427 | * Removes the specified SAS remote PHY and frees it. |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1428 | */ |
| 1429 | void |
| 1430 | sas_rphy_delete(struct sas_rphy *rphy) |
| 1431 | { |
Darrick J. Wong | 6f63caa | 2007-01-26 14:08:43 -0800 | [diff] [blame] | 1432 | sas_rphy_remove(rphy); |
| 1433 | sas_rphy_free(rphy); |
| 1434 | } |
| 1435 | EXPORT_SYMBOL(sas_rphy_delete); |
| 1436 | |
| 1437 | /** |
| 1438 | * sas_rphy_remove -- remove SAS remote PHY |
| 1439 | * @rphy: SAS remote phy to remove |
| 1440 | * |
| 1441 | * Removes the specified SAS remote PHY. |
| 1442 | */ |
| 1443 | void |
| 1444 | sas_rphy_remove(struct sas_rphy *rphy) |
| 1445 | { |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1446 | struct device *dev = &rphy->dev; |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1447 | struct sas_port *parent = dev_to_sas_port(dev->parent); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1448 | |
Christoph Hellwig | d405423 | 2006-01-04 13:45:20 +0100 | [diff] [blame] | 1449 | switch (rphy->identify.device_type) { |
| 1450 | case SAS_END_DEVICE: |
| 1451 | scsi_remove_target(dev); |
| 1452 | break; |
| 1453 | case SAS_EDGE_EXPANDER_DEVICE: |
| 1454 | case SAS_FANOUT_EXPANDER_DEVICE: |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1455 | sas_remove_children(dev); |
Christoph Hellwig | d405423 | 2006-01-04 13:45:20 +0100 | [diff] [blame] | 1456 | break; |
| 1457 | default: |
| 1458 | break; |
| 1459 | } |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1460 | |
Christoph Hellwig | fe8b230 | 2005-09-25 23:10:33 +0200 | [diff] [blame] | 1461 | transport_remove_device(dev); |
| 1462 | device_del(dev); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1463 | |
Christoph Hellwig | 33b114e | 2006-01-11 14:20:43 +0100 | [diff] [blame] | 1464 | parent->rphy = NULL; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1465 | } |
Darrick J. Wong | 6f63caa | 2007-01-26 14:08:43 -0800 | [diff] [blame] | 1466 | EXPORT_SYMBOL(sas_rphy_remove); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1467 | |
| 1468 | /** |
| 1469 | * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY |
| 1470 | * @dev: device to check |
| 1471 | * |
| 1472 | * Returns: |
| 1473 | * %1 if the device represents a SAS remote PHY, %0 else |
| 1474 | */ |
| 1475 | int scsi_is_sas_rphy(const struct device *dev) |
| 1476 | { |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 1477 | return dev->release == sas_end_device_release || |
| 1478 | dev->release == sas_expander_release; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1479 | } |
| 1480 | EXPORT_SYMBOL(scsi_is_sas_rphy); |
| 1481 | |
| 1482 | |
| 1483 | /* |
| 1484 | * SCSI scan helper |
| 1485 | */ |
| 1486 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1487 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
| 1488 | uint id, uint lun) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1489 | { |
| 1490 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
| 1491 | struct sas_rphy *rphy; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1492 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1493 | mutex_lock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1494 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
James Bottomley | 6d99a3f | 2006-05-19 10:49:37 -0500 | [diff] [blame] | 1495 | if (rphy->identify.device_type != SAS_END_DEVICE || |
| 1496 | rphy->scsi_target_id == -1) |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1497 | continue; |
| 1498 | |
James Bottomley | e8bf394 | 2006-07-11 17:49:34 -0400 | [diff] [blame] | 1499 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1500 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
James Bottomley | e8bf394 | 2006-07-11 17:49:34 -0400 | [diff] [blame] | 1501 | scsi_scan_target(&rphy->dev, 0, |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1502 | rphy->scsi_target_id, lun, 1); |
| 1503 | } |
| 1504 | } |
| 1505 | mutex_unlock(&sas_host->lock); |
| 1506 | |
| 1507 | return 0; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1508 | } |
| 1509 | |
| 1510 | |
| 1511 | /* |
| 1512 | * Setup / Teardown code |
| 1513 | */ |
| 1514 | |
James Bottomley | d24e1ee | 2006-09-06 19:25:22 -0500 | [diff] [blame] | 1515 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1516 | i->private_##attrb[count] = class_device_attr_##field; \ |
| 1517 | i->private_##attrb[count].attr.mode = perm; \ |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1518 | i->attrb[count] = &i->private_##attrb[count]; \ |
| 1519 | if (test) \ |
| 1520 | count++ |
| 1521 | |
James Bottomley | d24e1ee | 2006-09-06 19:25:22 -0500 | [diff] [blame] | 1522 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
| 1523 | i->private_##attrb[count] = class_device_attr_##field; \ |
| 1524 | i->private_##attrb[count].attr.mode = perm; \ |
| 1525 | if (ro_test) { \ |
| 1526 | i->private_##attrb[count].attr.mode = ro_perm; \ |
| 1527 | i->private_##attrb[count].store = NULL; \ |
| 1528 | } \ |
| 1529 | i->attrb[count] = &i->private_##attrb[count]; \ |
| 1530 | if (test) \ |
| 1531 | count++ |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1532 | |
| 1533 | #define SETUP_RPORT_ATTRIBUTE(field) \ |
| 1534 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1535 | |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1536 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1537 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1538 | |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1539 | #define SETUP_PHY_ATTRIBUTE(field) \ |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1540 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1541 | |
James Bottomley | d24e1ee | 2006-09-06 19:25:22 -0500 | [diff] [blame] | 1542 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
| 1543 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ |
| 1544 | !i->f->set_phy_speed, S_IRUGO) |
| 1545 | |
Darrick J. Wong | acbf167 | 2007-01-11 14:14:57 -0800 | [diff] [blame] | 1546 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
| 1547 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ |
| 1548 | !i->f->func, S_IRUGO) |
| 1549 | |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1550 | #define SETUP_PORT_ATTRIBUTE(field) \ |
| 1551 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) |
| 1552 | |
| 1553 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1554 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1555 | |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1556 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
Darrick J. Wong | fe3b5bf | 2007-01-11 14:15:35 -0800 | [diff] [blame] | 1557 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
Christoph Hellwig | 07ba3a9 | 2005-10-19 20:01:31 +0200 | [diff] [blame] | 1558 | |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1559 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
Darrick J. Wong | fe3b5bf | 2007-01-11 14:15:35 -0800 | [diff] [blame] | 1560 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1561 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1562 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
| 1563 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1564 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1565 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
| 1566 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) |
| 1567 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1568 | /** |
| 1569 | * sas_attach_transport -- instantiate SAS transport template |
| 1570 | * @ft: SAS transport class function template |
| 1571 | */ |
| 1572 | struct scsi_transport_template * |
| 1573 | sas_attach_transport(struct sas_function_template *ft) |
| 1574 | { |
| 1575 | struct sas_internal *i; |
| 1576 | int count; |
| 1577 | |
Jes Sorensen | 24669f75 | 2006-01-16 10:31:18 -0500 | [diff] [blame] | 1578 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1579 | if (!i) |
| 1580 | return NULL; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1581 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1582 | i->t.user_scan = sas_user_scan; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1583 | |
| 1584 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; |
| 1585 | i->t.host_attrs.ac.class = &sas_host_class.class; |
| 1586 | i->t.host_attrs.ac.match = sas_host_match; |
| 1587 | transport_container_register(&i->t.host_attrs); |
| 1588 | i->t.host_size = sizeof(struct sas_host_attrs); |
| 1589 | |
| 1590 | i->phy_attr_cont.ac.class = &sas_phy_class.class; |
| 1591 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; |
| 1592 | i->phy_attr_cont.ac.match = sas_phy_match; |
| 1593 | transport_container_register(&i->phy_attr_cont); |
| 1594 | |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1595 | i->port_attr_cont.ac.class = &sas_port_class.class; |
| 1596 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; |
| 1597 | i->port_attr_cont.ac.match = sas_port_match; |
| 1598 | transport_container_register(&i->port_attr_cont); |
| 1599 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1600 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
| 1601 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; |
| 1602 | i->rphy_attr_cont.ac.match = sas_rphy_match; |
| 1603 | transport_container_register(&i->rphy_attr_cont); |
| 1604 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1605 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
| 1606 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; |
| 1607 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; |
| 1608 | transport_container_register(&i->end_dev_attr_cont); |
| 1609 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1610 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
| 1611 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; |
| 1612 | i->expander_attr_cont.ac.match = sas_expander_match; |
| 1613 | transport_container_register(&i->expander_attr_cont); |
| 1614 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1615 | i->f = ft; |
| 1616 | |
| 1617 | count = 0; |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1618 | SETUP_PORT_ATTRIBUTE(num_phys); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1619 | i->host_attrs[count] = NULL; |
| 1620 | |
| 1621 | count = 0; |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1622 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
| 1623 | SETUP_PHY_ATTRIBUTE(target_port_protocols); |
| 1624 | SETUP_PHY_ATTRIBUTE(device_type); |
| 1625 | SETUP_PHY_ATTRIBUTE(sas_address); |
| 1626 | SETUP_PHY_ATTRIBUTE(phy_identifier); |
| 1627 | //SETUP_PHY_ATTRIBUTE(port_identifier); |
| 1628 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); |
| 1629 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); |
James Bottomley | d24e1ee | 2006-09-06 19:25:22 -0500 | [diff] [blame] | 1630 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1631 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
James Bottomley | d24e1ee | 2006-09-06 19:25:22 -0500 | [diff] [blame] | 1632 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
Christoph Hellwig | c3ee74c | 2005-09-19 21:59:42 +0200 | [diff] [blame] | 1633 | |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1634 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); |
| 1635 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); |
| 1636 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); |
| 1637 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); |
| 1638 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); |
| 1639 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); |
Darrick J. Wong | acbf167 | 2007-01-11 14:14:57 -0800 | [diff] [blame] | 1640 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1641 | i->phy_attrs[count] = NULL; |
| 1642 | |
| 1643 | count = 0; |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1644 | SETUP_PORT_ATTRIBUTE(num_phys); |
| 1645 | i->port_attrs[count] = NULL; |
| 1646 | |
| 1647 | count = 0; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1648 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); |
| 1649 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); |
| 1650 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); |
| 1651 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); |
| 1652 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1653 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
| 1654 | get_enclosure_identifier); |
| 1655 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, |
| 1656 | get_bay_identifier); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1657 | i->rphy_attrs[count] = NULL; |
| 1658 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1659 | count = 0; |
| 1660 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); |
| 1661 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); |
| 1662 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); |
| 1663 | i->end_dev_attrs[count] = NULL; |
| 1664 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1665 | count = 0; |
| 1666 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); |
| 1667 | SETUP_EXPANDER_ATTRIBUTE(product_id); |
| 1668 | SETUP_EXPANDER_ATTRIBUTE(product_rev); |
| 1669 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); |
| 1670 | SETUP_EXPANDER_ATTRIBUTE(component_id); |
| 1671 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); |
| 1672 | SETUP_EXPANDER_ATTRIBUTE(level); |
| 1673 | i->expander_attrs[count] = NULL; |
| 1674 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1675 | return &i->t; |
| 1676 | } |
| 1677 | EXPORT_SYMBOL(sas_attach_transport); |
| 1678 | |
| 1679 | /** |
| 1680 | * sas_release_transport -- release SAS transport template instance |
| 1681 | * @t: transport template instance |
| 1682 | */ |
| 1683 | void sas_release_transport(struct scsi_transport_template *t) |
| 1684 | { |
| 1685 | struct sas_internal *i = to_sas_internal(t); |
| 1686 | |
| 1687 | transport_container_unregister(&i->t.host_attrs); |
| 1688 | transport_container_unregister(&i->phy_attr_cont); |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1689 | transport_container_unregister(&i->port_attr_cont); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1690 | transport_container_unregister(&i->rphy_attr_cont); |
James Bottomley | db82f84 | 2006-03-09 22:06:36 -0500 | [diff] [blame] | 1691 | transport_container_unregister(&i->end_dev_attr_cont); |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1692 | transport_container_unregister(&i->expander_attr_cont); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1693 | |
| 1694 | kfree(i); |
| 1695 | } |
| 1696 | EXPORT_SYMBOL(sas_release_transport); |
| 1697 | |
| 1698 | static __init int sas_transport_init(void) |
| 1699 | { |
| 1700 | int error; |
| 1701 | |
| 1702 | error = transport_class_register(&sas_host_class); |
| 1703 | if (error) |
| 1704 | goto out; |
| 1705 | error = transport_class_register(&sas_phy_class); |
| 1706 | if (error) |
| 1707 | goto out_unregister_transport; |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1708 | error = transport_class_register(&sas_port_class); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1709 | if (error) |
| 1710 | goto out_unregister_phy; |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1711 | error = transport_class_register(&sas_rphy_class); |
| 1712 | if (error) |
| 1713 | goto out_unregister_port; |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1714 | error = transport_class_register(&sas_end_dev_class); |
| 1715 | if (error) |
| 1716 | goto out_unregister_rphy; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1717 | error = transport_class_register(&sas_expander_class); |
| 1718 | if (error) |
| 1719 | goto out_unregister_end_dev; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1720 | |
| 1721 | return 0; |
| 1722 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1723 | out_unregister_end_dev: |
| 1724 | transport_class_unregister(&sas_end_dev_class); |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1725 | out_unregister_rphy: |
| 1726 | transport_class_unregister(&sas_rphy_class); |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1727 | out_unregister_port: |
| 1728 | transport_class_unregister(&sas_port_class); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1729 | out_unregister_phy: |
| 1730 | transport_class_unregister(&sas_phy_class); |
| 1731 | out_unregister_transport: |
| 1732 | transport_class_unregister(&sas_host_class); |
| 1733 | out: |
| 1734 | return error; |
| 1735 | |
| 1736 | } |
| 1737 | |
| 1738 | static void __exit sas_transport_exit(void) |
| 1739 | { |
| 1740 | transport_class_unregister(&sas_host_class); |
| 1741 | transport_class_unregister(&sas_phy_class); |
James Bottomley | 65c92b0 | 2006-06-28 12:22:50 -0400 | [diff] [blame] | 1742 | transport_class_unregister(&sas_port_class); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1743 | transport_class_unregister(&sas_rphy_class); |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1744 | transport_class_unregister(&sas_end_dev_class); |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1745 | transport_class_unregister(&sas_expander_class); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1746 | } |
| 1747 | |
| 1748 | MODULE_AUTHOR("Christoph Hellwig"); |
Alexis Bruemmer | 86b9c4c | 2007-01-16 15:36:12 -0800 | [diff] [blame] | 1749 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1750 | MODULE_LICENSE("GPL"); |
| 1751 | |
| 1752 | module_init(sas_transport_init); |
| 1753 | module_exit(sas_transport_exit); |