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> |
| 28 | #include <linux/err.h> |
Tim Schmielau | 8c65b4a | 2005-11-07 00:59:43 -0800 | [diff] [blame] | 29 | #include <linux/slab.h> |
| 30 | #include <linux/string.h> |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 31 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 32 | #include <scsi/scsi.h> |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 33 | #include <scsi/scsi_device.h> |
| 34 | #include <scsi/scsi_host.h> |
| 35 | #include <scsi/scsi_transport.h> |
| 36 | #include <scsi/scsi_transport_sas.h> |
| 37 | |
| 38 | |
| 39 | #define SAS_HOST_ATTRS 0 |
Christoph Hellwig | 07ba3a9 | 2005-10-19 20:01:31 +0200 | [diff] [blame] | 40 | #define SAS_PORT_ATTRS 17 |
Christoph Hellwig | a012564 | 2006-02-16 13:31:47 +0100 | [diff] [blame] | 41 | #define SAS_RPORT_ATTRS 7 |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 42 | #define SAS_END_DEV_ATTRS 3 |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 43 | #define SAS_EXPANDER_ATTRS 7 |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 44 | |
| 45 | struct sas_internal { |
| 46 | struct scsi_transport_template t; |
| 47 | struct sas_function_template *f; |
| 48 | |
| 49 | struct class_device_attribute private_host_attrs[SAS_HOST_ATTRS]; |
| 50 | struct class_device_attribute private_phy_attrs[SAS_PORT_ATTRS]; |
| 51 | struct class_device_attribute private_rphy_attrs[SAS_RPORT_ATTRS]; |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 52 | struct class_device_attribute private_end_dev_attrs[SAS_END_DEV_ATTRS]; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 53 | struct class_device_attribute private_expander_attrs[SAS_EXPANDER_ATTRS]; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 54 | |
| 55 | struct transport_container phy_attr_cont; |
| 56 | struct transport_container rphy_attr_cont; |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 57 | struct transport_container end_dev_attr_cont; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 58 | struct transport_container expander_attr_cont; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 59 | |
| 60 | /* |
| 61 | * The array of null terminated pointers to attributes |
| 62 | * needed by scsi_sysfs.c |
| 63 | */ |
| 64 | struct class_device_attribute *host_attrs[SAS_HOST_ATTRS + 1]; |
| 65 | struct class_device_attribute *phy_attrs[SAS_PORT_ATTRS + 1]; |
| 66 | struct class_device_attribute *rphy_attrs[SAS_RPORT_ATTRS + 1]; |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 67 | struct class_device_attribute *end_dev_attrs[SAS_END_DEV_ATTRS + 1]; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 68 | struct class_device_attribute *expander_attrs[SAS_EXPANDER_ATTRS + 1]; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 69 | }; |
| 70 | #define to_sas_internal(tmpl) container_of(tmpl, struct sas_internal, t) |
| 71 | |
| 72 | struct sas_host_attrs { |
| 73 | struct list_head rphy_list; |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 74 | struct mutex lock; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 75 | u32 next_target_id; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 76 | u32 next_expander_id; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 77 | }; |
| 78 | #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) |
| 79 | |
| 80 | |
| 81 | /* |
| 82 | * Hack to allow attributes of the same name in different objects. |
| 83 | */ |
| 84 | #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
| 85 | struct class_device_attribute class_device_attr_##_prefix##_##_name = \ |
| 86 | __ATTR(_name,_mode,_show,_store) |
| 87 | |
| 88 | |
| 89 | /* |
| 90 | * Pretty printing helpers |
| 91 | */ |
| 92 | |
| 93 | #define sas_bitfield_name_match(title, table) \ |
| 94 | static ssize_t \ |
| 95 | get_sas_##title##_names(u32 table_key, char *buf) \ |
| 96 | { \ |
| 97 | char *prefix = ""; \ |
| 98 | ssize_t len = 0; \ |
| 99 | int i; \ |
| 100 | \ |
| 101 | for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \ |
| 102 | if (table[i].value & table_key) { \ |
| 103 | len += sprintf(buf + len, "%s%s", \ |
| 104 | prefix, table[i].name); \ |
| 105 | prefix = ", "; \ |
| 106 | } \ |
| 107 | } \ |
| 108 | len += sprintf(buf + len, "\n"); \ |
| 109 | return len; \ |
| 110 | } |
| 111 | |
| 112 | #define sas_bitfield_name_search(title, table) \ |
| 113 | static ssize_t \ |
| 114 | get_sas_##title##_names(u32 table_key, char *buf) \ |
| 115 | { \ |
| 116 | ssize_t len = 0; \ |
| 117 | int i; \ |
| 118 | \ |
| 119 | for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \ |
| 120 | if (table[i].value == table_key) { \ |
| 121 | len += sprintf(buf + len, "%s", \ |
| 122 | table[i].name); \ |
| 123 | break; \ |
| 124 | } \ |
| 125 | } \ |
| 126 | len += sprintf(buf + len, "\n"); \ |
| 127 | return len; \ |
| 128 | } |
| 129 | |
| 130 | static struct { |
| 131 | u32 value; |
| 132 | char *name; |
| 133 | } sas_device_type_names[] = { |
| 134 | { SAS_PHY_UNUSED, "unused" }, |
| 135 | { SAS_END_DEVICE, "end device" }, |
| 136 | { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, |
| 137 | { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, |
| 138 | }; |
| 139 | sas_bitfield_name_search(device_type, sas_device_type_names) |
| 140 | |
| 141 | |
| 142 | static struct { |
| 143 | u32 value; |
| 144 | char *name; |
| 145 | } sas_protocol_names[] = { |
| 146 | { SAS_PROTOCOL_SATA, "sata" }, |
| 147 | { SAS_PROTOCOL_SMP, "smp" }, |
| 148 | { SAS_PROTOCOL_STP, "stp" }, |
| 149 | { SAS_PROTOCOL_SSP, "ssp" }, |
| 150 | }; |
| 151 | sas_bitfield_name_match(protocol, sas_protocol_names) |
| 152 | |
| 153 | static struct { |
| 154 | u32 value; |
| 155 | char *name; |
| 156 | } sas_linkspeed_names[] = { |
| 157 | { SAS_LINK_RATE_UNKNOWN, "Unknown" }, |
| 158 | { SAS_PHY_DISABLED, "Phy disabled" }, |
| 159 | { SAS_LINK_RATE_FAILED, "Link Rate failed" }, |
| 160 | { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, |
| 161 | { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, |
| 162 | { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, |
James Bottomley | 7e6dff6 | 2006-03-02 14:12:56 -0600 | [diff] [blame] | 163 | { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 164 | }; |
| 165 | sas_bitfield_name_search(linkspeed, sas_linkspeed_names) |
| 166 | |
| 167 | |
| 168 | /* |
| 169 | * SAS host attributes |
| 170 | */ |
| 171 | |
James Bottomley | 37be6ee | 2005-09-09 18:38:27 -0500 | [diff] [blame] | 172 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
| 173 | struct class_device *cdev) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 174 | { |
| 175 | struct Scsi_Host *shost = dev_to_shost(dev); |
| 176 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
| 177 | |
| 178 | INIT_LIST_HEAD(&sas_host->rphy_list); |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 179 | mutex_init(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 180 | sas_host->next_target_id = 0; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 181 | sas_host->next_expander_id = 0; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 182 | return 0; |
| 183 | } |
| 184 | |
| 185 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
| 186 | "sas_host", sas_host_setup, NULL, NULL); |
| 187 | |
| 188 | static int sas_host_match(struct attribute_container *cont, |
| 189 | struct device *dev) |
| 190 | { |
| 191 | struct Scsi_Host *shost; |
| 192 | struct sas_internal *i; |
| 193 | |
| 194 | if (!scsi_is_host_device(dev)) |
| 195 | return 0; |
| 196 | shost = dev_to_shost(dev); |
| 197 | |
| 198 | if (!shost->transportt) |
| 199 | return 0; |
| 200 | if (shost->transportt->host_attrs.ac.class != |
| 201 | &sas_host_class.class) |
| 202 | return 0; |
| 203 | |
| 204 | i = to_sas_internal(shost->transportt); |
| 205 | return &i->t.host_attrs.ac == cont; |
| 206 | } |
| 207 | |
| 208 | static int do_sas_phy_delete(struct device *dev, void *data) |
| 209 | { |
| 210 | if (scsi_is_sas_phy(dev)) |
| 211 | sas_phy_delete(dev_to_phy(dev)); |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * sas_remove_host -- tear down a Scsi_Host's SAS data structures |
| 217 | * @shost: Scsi Host that is torn down |
| 218 | * |
| 219 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. |
| 220 | * Must be called just before scsi_remove_host for SAS HBAs. |
| 221 | */ |
| 222 | void sas_remove_host(struct Scsi_Host *shost) |
| 223 | { |
| 224 | device_for_each_child(&shost->shost_gendev, NULL, do_sas_phy_delete); |
| 225 | } |
| 226 | EXPORT_SYMBOL(sas_remove_host); |
| 227 | |
| 228 | |
| 229 | /* |
| 230 | * SAS Port attributes |
| 231 | */ |
| 232 | |
| 233 | #define sas_phy_show_simple(field, name, format_string, cast) \ |
| 234 | static ssize_t \ |
| 235 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ |
| 236 | { \ |
| 237 | struct sas_phy *phy = transport_class_to_phy(cdev); \ |
| 238 | \ |
| 239 | return snprintf(buf, 20, format_string, cast phy->field); \ |
| 240 | } |
| 241 | |
| 242 | #define sas_phy_simple_attr(field, name, format_string, type) \ |
| 243 | sas_phy_show_simple(field, name, format_string, (type)) \ |
| 244 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
| 245 | |
| 246 | #define sas_phy_show_protocol(field, name) \ |
| 247 | static ssize_t \ |
| 248 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ |
| 249 | { \ |
| 250 | struct sas_phy *phy = transport_class_to_phy(cdev); \ |
| 251 | \ |
| 252 | if (!phy->field) \ |
| 253 | return snprintf(buf, 20, "none\n"); \ |
| 254 | return get_sas_protocol_names(phy->field, buf); \ |
| 255 | } |
| 256 | |
| 257 | #define sas_phy_protocol_attr(field, name) \ |
| 258 | sas_phy_show_protocol(field, name) \ |
| 259 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
| 260 | |
| 261 | #define sas_phy_show_linkspeed(field) \ |
| 262 | static ssize_t \ |
| 263 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ |
| 264 | { \ |
| 265 | struct sas_phy *phy = transport_class_to_phy(cdev); \ |
| 266 | \ |
| 267 | return get_sas_linkspeed_names(phy->field, buf); \ |
| 268 | } |
| 269 | |
| 270 | #define sas_phy_linkspeed_attr(field) \ |
| 271 | sas_phy_show_linkspeed(field) \ |
| 272 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
| 273 | |
Christoph Hellwig | c3ee74c | 2005-09-19 21:59:42 +0200 | [diff] [blame] | 274 | #define sas_phy_show_linkerror(field) \ |
| 275 | static ssize_t \ |
| 276 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ |
| 277 | { \ |
| 278 | struct sas_phy *phy = transport_class_to_phy(cdev); \ |
| 279 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
| 280 | struct sas_internal *i = to_sas_internal(shost->transportt); \ |
| 281 | int error; \ |
| 282 | \ |
Christoph Hellwig | ac01bbb | 2005-10-19 20:01:17 +0200 | [diff] [blame] | 283 | if (!phy->local_attached) \ |
| 284 | return -EINVAL; \ |
| 285 | \ |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 286 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
Christoph Hellwig | c3ee74c | 2005-09-19 21:59:42 +0200 | [diff] [blame] | 287 | if (error) \ |
| 288 | return error; \ |
| 289 | return snprintf(buf, 20, "%u\n", phy->field); \ |
| 290 | } |
| 291 | |
| 292 | #define sas_phy_linkerror_attr(field) \ |
| 293 | sas_phy_show_linkerror(field) \ |
| 294 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
| 295 | |
| 296 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 297 | static ssize_t |
| 298 | show_sas_device_type(struct class_device *cdev, char *buf) |
| 299 | { |
| 300 | struct sas_phy *phy = transport_class_to_phy(cdev); |
| 301 | |
| 302 | if (!phy->identify.device_type) |
| 303 | return snprintf(buf, 20, "none\n"); |
| 304 | return get_sas_device_type_names(phy->identify.device_type, buf); |
| 305 | } |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 306 | static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
| 307 | |
Christoph Hellwig | 07ba3a9 | 2005-10-19 20:01:31 +0200 | [diff] [blame] | 308 | static ssize_t do_sas_phy_reset(struct class_device *cdev, |
| 309 | size_t count, int hard_reset) |
| 310 | { |
| 311 | struct sas_phy *phy = transport_class_to_phy(cdev); |
| 312 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
| 313 | struct sas_internal *i = to_sas_internal(shost->transportt); |
| 314 | int error; |
| 315 | |
| 316 | if (!phy->local_attached) |
| 317 | return -EINVAL; |
| 318 | |
| 319 | error = i->f->phy_reset(phy, hard_reset); |
| 320 | if (error) |
| 321 | return error; |
| 322 | return count; |
| 323 | }; |
| 324 | |
| 325 | static ssize_t store_sas_link_reset(struct class_device *cdev, |
| 326 | const char *buf, size_t count) |
| 327 | { |
| 328 | return do_sas_phy_reset(cdev, count, 0); |
| 329 | } |
| 330 | static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); |
| 331 | |
| 332 | static ssize_t store_sas_hard_reset(struct class_device *cdev, |
| 333 | const char *buf, size_t count) |
| 334 | { |
| 335 | return do_sas_phy_reset(cdev, count, 1); |
| 336 | } |
| 337 | static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); |
| 338 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 339 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
| 340 | initiator_port_protocols); |
| 341 | sas_phy_protocol_attr(identify.target_port_protocols, |
| 342 | target_port_protocols); |
| 343 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", |
| 344 | unsigned long long); |
| 345 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); |
| 346 | sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", u8); |
| 347 | sas_phy_linkspeed_attr(negotiated_linkrate); |
| 348 | sas_phy_linkspeed_attr(minimum_linkrate_hw); |
| 349 | sas_phy_linkspeed_attr(minimum_linkrate); |
| 350 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
| 351 | sas_phy_linkspeed_attr(maximum_linkrate); |
Christoph Hellwig | c3ee74c | 2005-09-19 21:59:42 +0200 | [diff] [blame] | 352 | sas_phy_linkerror_attr(invalid_dword_count); |
| 353 | sas_phy_linkerror_attr(running_disparity_error_count); |
| 354 | sas_phy_linkerror_attr(loss_of_dword_sync_count); |
| 355 | sas_phy_linkerror_attr(phy_reset_problem_count); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 356 | |
| 357 | |
| 358 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, |
| 359 | "sas_phy", NULL, NULL, NULL); |
| 360 | |
| 361 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) |
| 362 | { |
| 363 | struct Scsi_Host *shost; |
| 364 | struct sas_internal *i; |
| 365 | |
| 366 | if (!scsi_is_sas_phy(dev)) |
| 367 | return 0; |
| 368 | shost = dev_to_shost(dev->parent); |
| 369 | |
| 370 | if (!shost->transportt) |
| 371 | return 0; |
| 372 | if (shost->transportt->host_attrs.ac.class != |
| 373 | &sas_host_class.class) |
| 374 | return 0; |
| 375 | |
| 376 | i = to_sas_internal(shost->transportt); |
| 377 | return &i->phy_attr_cont.ac == cont; |
| 378 | } |
| 379 | |
| 380 | static void sas_phy_release(struct device *dev) |
| 381 | { |
| 382 | struct sas_phy *phy = dev_to_phy(dev); |
| 383 | |
| 384 | put_device(dev->parent); |
| 385 | kfree(phy); |
| 386 | } |
| 387 | |
| 388 | /** |
| 389 | * sas_phy_alloc -- allocates and initialize a SAS PHY structure |
| 390 | * @parent: Parent device |
Moore, Eric | d99ca41 | 2006-01-26 16:20:02 -0700 | [diff] [blame] | 391 | * @number: Phy index |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 392 | * |
| 393 | * Allocates an SAS PHY structure. It will be added in the device tree |
| 394 | * below the device specified by @parent, which has to be either a Scsi_Host |
| 395 | * or sas_rphy. |
| 396 | * |
| 397 | * Returns: |
| 398 | * SAS PHY allocated or %NULL if the allocation failed. |
| 399 | */ |
| 400 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) |
| 401 | { |
| 402 | struct Scsi_Host *shost = dev_to_shost(parent); |
| 403 | struct sas_phy *phy; |
| 404 | |
Jes Sorensen | 24669f75 | 2006-01-16 10:31:18 -0500 | [diff] [blame] | 405 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 406 | if (!phy) |
| 407 | return NULL; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 408 | |
| 409 | get_device(parent); |
| 410 | |
| 411 | phy->number = number; |
| 412 | |
| 413 | device_initialize(&phy->dev); |
| 414 | phy->dev.parent = get_device(parent); |
| 415 | phy->dev.release = sas_phy_release; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 416 | if (scsi_is_sas_expander_device(parent)) { |
| 417 | struct sas_rphy *rphy = dev_to_rphy(parent); |
| 418 | sprintf(phy->dev.bus_id, "phy-%d-%d:%d", shost->host_no, |
| 419 | rphy->scsi_target_id, number); |
| 420 | } else |
| 421 | sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 422 | |
| 423 | transport_setup_device(&phy->dev); |
| 424 | |
| 425 | return phy; |
| 426 | } |
| 427 | EXPORT_SYMBOL(sas_phy_alloc); |
| 428 | |
| 429 | /** |
| 430 | * sas_phy_add -- add a SAS PHY to the device hierachy |
| 431 | * @phy: The PHY to be added |
| 432 | * |
| 433 | * Publishes a SAS PHY to the rest of the system. |
| 434 | */ |
| 435 | int sas_phy_add(struct sas_phy *phy) |
| 436 | { |
| 437 | int error; |
| 438 | |
| 439 | error = device_add(&phy->dev); |
| 440 | if (!error) { |
| 441 | transport_add_device(&phy->dev); |
| 442 | transport_configure_device(&phy->dev); |
| 443 | } |
| 444 | |
| 445 | return error; |
| 446 | } |
| 447 | EXPORT_SYMBOL(sas_phy_add); |
| 448 | |
| 449 | /** |
| 450 | * sas_phy_free -- free a SAS PHY |
| 451 | * @phy: SAS PHY to free |
| 452 | * |
| 453 | * Frees the specified SAS PHY. |
| 454 | * |
| 455 | * Note: |
| 456 | * This function must only be called on a PHY that has not |
| 457 | * sucessfully been added using sas_phy_add(). |
| 458 | */ |
| 459 | void sas_phy_free(struct sas_phy *phy) |
| 460 | { |
| 461 | transport_destroy_device(&phy->dev); |
| 462 | put_device(phy->dev.parent); |
| 463 | put_device(phy->dev.parent); |
| 464 | put_device(phy->dev.parent); |
| 465 | kfree(phy); |
| 466 | } |
| 467 | EXPORT_SYMBOL(sas_phy_free); |
| 468 | |
| 469 | /** |
| 470 | * sas_phy_delete -- remove SAS PHY |
| 471 | * @phy: SAS PHY to remove |
| 472 | * |
| 473 | * Removes the specified SAS PHY. If the SAS PHY has an |
| 474 | * associated remote PHY it is removed before. |
| 475 | */ |
| 476 | void |
| 477 | sas_phy_delete(struct sas_phy *phy) |
| 478 | { |
| 479 | struct device *dev = &phy->dev; |
| 480 | |
| 481 | if (phy->rphy) |
| 482 | sas_rphy_delete(phy->rphy); |
| 483 | |
| 484 | transport_remove_device(dev); |
| 485 | device_del(dev); |
| 486 | transport_destroy_device(dev); |
| 487 | put_device(dev->parent); |
| 488 | } |
| 489 | EXPORT_SYMBOL(sas_phy_delete); |
| 490 | |
| 491 | /** |
| 492 | * scsi_is_sas_phy -- check if a struct device represents a SAS PHY |
| 493 | * @dev: device to check |
| 494 | * |
| 495 | * Returns: |
| 496 | * %1 if the device represents a SAS PHY, %0 else |
| 497 | */ |
| 498 | int scsi_is_sas_phy(const struct device *dev) |
| 499 | { |
| 500 | return dev->release == sas_phy_release; |
| 501 | } |
| 502 | EXPORT_SYMBOL(scsi_is_sas_phy); |
| 503 | |
| 504 | /* |
| 505 | * SAS remote PHY attributes. |
| 506 | */ |
| 507 | |
| 508 | #define sas_rphy_show_simple(field, name, format_string, cast) \ |
| 509 | static ssize_t \ |
| 510 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ |
| 511 | { \ |
| 512 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ |
| 513 | \ |
| 514 | return snprintf(buf, 20, format_string, cast rphy->field); \ |
| 515 | } |
| 516 | |
| 517 | #define sas_rphy_simple_attr(field, name, format_string, type) \ |
| 518 | sas_rphy_show_simple(field, name, format_string, (type)) \ |
| 519 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
| 520 | show_sas_rphy_##name, NULL) |
| 521 | |
| 522 | #define sas_rphy_show_protocol(field, name) \ |
| 523 | static ssize_t \ |
| 524 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ |
| 525 | { \ |
| 526 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ |
| 527 | \ |
| 528 | if (!rphy->field) \ |
| 529 | return snprintf(buf, 20, "none\n"); \ |
| 530 | return get_sas_protocol_names(rphy->field, buf); \ |
| 531 | } |
| 532 | |
| 533 | #define sas_rphy_protocol_attr(field, name) \ |
| 534 | sas_rphy_show_protocol(field, name) \ |
| 535 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
| 536 | show_sas_rphy_##name, NULL) |
| 537 | |
| 538 | static ssize_t |
| 539 | show_sas_rphy_device_type(struct class_device *cdev, char *buf) |
| 540 | { |
| 541 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); |
| 542 | |
| 543 | if (!rphy->identify.device_type) |
| 544 | return snprintf(buf, 20, "none\n"); |
| 545 | return get_sas_device_type_names( |
| 546 | rphy->identify.device_type, buf); |
| 547 | } |
| 548 | |
| 549 | static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO, |
| 550 | show_sas_rphy_device_type, NULL); |
| 551 | |
Christoph Hellwig | a012564 | 2006-02-16 13:31:47 +0100 | [diff] [blame] | 552 | static ssize_t |
| 553 | show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf) |
| 554 | { |
| 555 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); |
| 556 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
| 557 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
| 558 | struct sas_internal *i = to_sas_internal(shost->transportt); |
| 559 | u64 identifier; |
| 560 | int error; |
| 561 | |
| 562 | /* |
| 563 | * Only devices behind an expander are supported, because the |
| 564 | * enclosure identifier is a SMP feature. |
| 565 | */ |
| 566 | if (phy->local_attached) |
| 567 | return -EINVAL; |
| 568 | |
| 569 | error = i->f->get_enclosure_identifier(rphy, &identifier); |
| 570 | if (error) |
| 571 | return error; |
| 572 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); |
| 573 | } |
| 574 | |
| 575 | static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, |
| 576 | show_sas_rphy_enclosure_identifier, NULL); |
| 577 | |
| 578 | static ssize_t |
| 579 | show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf) |
| 580 | { |
| 581 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); |
| 582 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
| 583 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
| 584 | struct sas_internal *i = to_sas_internal(shost->transportt); |
| 585 | int val; |
| 586 | |
| 587 | if (phy->local_attached) |
| 588 | return -EINVAL; |
| 589 | |
| 590 | val = i->f->get_bay_identifier(rphy); |
| 591 | if (val < 0) |
| 592 | return val; |
| 593 | return sprintf(buf, "%d\n", val); |
| 594 | } |
| 595 | |
| 596 | static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, |
| 597 | show_sas_rphy_bay_identifier, NULL); |
| 598 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 599 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
| 600 | initiator_port_protocols); |
| 601 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); |
| 602 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", |
| 603 | unsigned long long); |
| 604 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); |
| 605 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 606 | /* only need 8 bytes of data plus header (4 or 8) */ |
| 607 | #define BUF_SIZE 64 |
| 608 | |
| 609 | int sas_read_port_mode_page(struct scsi_device *sdev) |
| 610 | { |
| 611 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; |
| 612 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); |
| 613 | struct sas_end_device *rdev; |
| 614 | struct scsi_mode_data mode_data; |
| 615 | int res, error; |
| 616 | |
| 617 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); |
| 618 | |
| 619 | rdev = rphy_to_end_device(rphy); |
| 620 | |
| 621 | if (!buffer) |
| 622 | return -ENOMEM; |
| 623 | |
| 624 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, |
| 625 | &mode_data, NULL); |
| 626 | |
| 627 | error = -EINVAL; |
| 628 | if (!scsi_status_is_good(res)) |
| 629 | goto out; |
| 630 | |
| 631 | msdata = buffer + mode_data.header_length + |
| 632 | mode_data.block_descriptor_length; |
| 633 | |
| 634 | if (msdata - buffer > BUF_SIZE - 8) |
| 635 | goto out; |
| 636 | |
| 637 | error = 0; |
| 638 | |
| 639 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; |
| 640 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; |
| 641 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; |
| 642 | |
| 643 | out: |
| 644 | kfree(buffer); |
| 645 | return error; |
| 646 | } |
| 647 | EXPORT_SYMBOL(sas_read_port_mode_page); |
| 648 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 649 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
| 650 | "sas_end_device", NULL, NULL, NULL); |
| 651 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 652 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
| 653 | static ssize_t \ |
| 654 | show_sas_end_dev_##name(struct class_device *cdev, char *buf) \ |
| 655 | { \ |
| 656 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ |
| 657 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ |
| 658 | \ |
| 659 | return snprintf(buf, 20, format_string, cast rdev->field); \ |
| 660 | } |
| 661 | |
| 662 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ |
| 663 | sas_end_dev_show_simple(field, name, format_string, (type)) \ |
| 664 | static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ |
| 665 | show_sas_end_dev_##name, NULL) |
| 666 | |
| 667 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); |
| 668 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, |
| 669 | "%d\n", int); |
| 670 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, |
| 671 | "%d\n", int); |
| 672 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 673 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
| 674 | "sas_expander", NULL, NULL, NULL); |
| 675 | |
| 676 | #define sas_expander_show_simple(field, name, format_string, cast) \ |
| 677 | static ssize_t \ |
| 678 | show_sas_expander_##name(struct class_device *cdev, char *buf) \ |
| 679 | { \ |
| 680 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ |
| 681 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ |
| 682 | \ |
| 683 | return snprintf(buf, 20, format_string, cast edev->field); \ |
| 684 | } |
| 685 | |
| 686 | #define sas_expander_simple_attr(field, name, format_string, type) \ |
| 687 | sas_expander_show_simple(field, name, format_string, (type)) \ |
| 688 | static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \ |
| 689 | show_sas_expander_##name, NULL) |
| 690 | |
| 691 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); |
| 692 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); |
| 693 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); |
| 694 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, |
| 695 | "%s\n", char *); |
| 696 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); |
| 697 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", |
| 698 | unsigned int); |
| 699 | sas_expander_simple_attr(level, level, "%d\n", int); |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 700 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 701 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 702 | "sas_device", NULL, NULL, NULL); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 703 | |
| 704 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) |
| 705 | { |
| 706 | struct Scsi_Host *shost; |
| 707 | struct sas_internal *i; |
| 708 | |
| 709 | if (!scsi_is_sas_rphy(dev)) |
| 710 | return 0; |
| 711 | shost = dev_to_shost(dev->parent->parent); |
| 712 | |
| 713 | if (!shost->transportt) |
| 714 | return 0; |
| 715 | if (shost->transportt->host_attrs.ac.class != |
| 716 | &sas_host_class.class) |
| 717 | return 0; |
| 718 | |
| 719 | i = to_sas_internal(shost->transportt); |
| 720 | return &i->rphy_attr_cont.ac == cont; |
| 721 | } |
| 722 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 723 | static int sas_end_dev_match(struct attribute_container *cont, |
| 724 | struct device *dev) |
| 725 | { |
| 726 | struct Scsi_Host *shost; |
| 727 | struct sas_internal *i; |
| 728 | struct sas_rphy *rphy; |
| 729 | |
| 730 | if (!scsi_is_sas_rphy(dev)) |
| 731 | return 0; |
| 732 | shost = dev_to_shost(dev->parent->parent); |
| 733 | rphy = dev_to_rphy(dev); |
| 734 | |
| 735 | if (!shost->transportt) |
| 736 | return 0; |
| 737 | if (shost->transportt->host_attrs.ac.class != |
| 738 | &sas_host_class.class) |
| 739 | return 0; |
| 740 | |
| 741 | i = to_sas_internal(shost->transportt); |
| 742 | return &i->end_dev_attr_cont.ac == cont && |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 743 | rphy->identify.device_type == SAS_END_DEVICE; |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 744 | } |
| 745 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 746 | static int sas_expander_match(struct attribute_container *cont, |
| 747 | struct device *dev) |
| 748 | { |
| 749 | struct Scsi_Host *shost; |
| 750 | struct sas_internal *i; |
| 751 | struct sas_rphy *rphy; |
| 752 | |
| 753 | if (!scsi_is_sas_rphy(dev)) |
| 754 | return 0; |
| 755 | shost = dev_to_shost(dev->parent->parent); |
| 756 | rphy = dev_to_rphy(dev); |
| 757 | |
| 758 | if (!shost->transportt) |
| 759 | return 0; |
| 760 | if (shost->transportt->host_attrs.ac.class != |
| 761 | &sas_host_class.class) |
| 762 | return 0; |
| 763 | |
| 764 | i = to_sas_internal(shost->transportt); |
| 765 | return &i->expander_attr_cont.ac == cont && |
| 766 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 767 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 768 | } |
| 769 | |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 770 | static void sas_expander_release(struct device *dev) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 771 | { |
| 772 | struct sas_rphy *rphy = dev_to_rphy(dev); |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 773 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 774 | |
| 775 | put_device(dev->parent); |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 776 | kfree(edev); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 777 | } |
| 778 | |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 779 | static void sas_end_device_release(struct device *dev) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 780 | { |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 781 | struct sas_rphy *rphy = dev_to_rphy(dev); |
| 782 | struct sas_end_device *edev = rphy_to_end_device(rphy); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 783 | |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 784 | put_device(dev->parent); |
| 785 | kfree(edev); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 786 | } |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 787 | |
| 788 | /** |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 789 | * sas_end_device_alloc - allocate an rphy for an end device |
| 790 | * |
| 791 | * Allocates an SAS remote PHY structure, connected to @parent. |
| 792 | * |
| 793 | * Returns: |
| 794 | * SAS PHY allocated or %NULL if the allocation failed. |
| 795 | */ |
| 796 | struct sas_rphy *sas_end_device_alloc(struct sas_phy *parent) |
| 797 | { |
| 798 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); |
| 799 | struct sas_end_device *rdev; |
| 800 | |
| 801 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); |
| 802 | if (!rdev) { |
| 803 | put_device(&parent->dev); |
| 804 | return NULL; |
| 805 | } |
| 806 | |
| 807 | device_initialize(&rdev->rphy.dev); |
| 808 | rdev->rphy.dev.parent = get_device(&parent->dev); |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 809 | rdev->rphy.dev.release = sas_end_device_release; |
| 810 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d-%d", |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 811 | shost->host_no, parent->port_identifier, parent->number); |
| 812 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 813 | transport_setup_device(&rdev->rphy.dev); |
| 814 | |
| 815 | return &rdev->rphy; |
| 816 | } |
| 817 | EXPORT_SYMBOL(sas_end_device_alloc); |
| 818 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 819 | /** |
| 820 | * sas_expander_alloc - allocate an rphy for an end device |
| 821 | * |
| 822 | * Allocates an SAS remote PHY structure, connected to @parent. |
| 823 | * |
| 824 | * Returns: |
| 825 | * SAS PHY allocated or %NULL if the allocation failed. |
| 826 | */ |
| 827 | struct sas_rphy *sas_expander_alloc(struct sas_phy *parent, |
| 828 | enum sas_device_type type) |
| 829 | { |
| 830 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); |
| 831 | struct sas_expander_device *rdev; |
| 832 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
| 833 | |
| 834 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && |
| 835 | type != SAS_FANOUT_EXPANDER_DEVICE); |
| 836 | |
| 837 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); |
| 838 | if (!rdev) { |
| 839 | put_device(&parent->dev); |
| 840 | return NULL; |
| 841 | } |
| 842 | |
| 843 | device_initialize(&rdev->rphy.dev); |
| 844 | rdev->rphy.dev.parent = get_device(&parent->dev); |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 845 | rdev->rphy.dev.release = sas_expander_release; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 846 | mutex_lock(&sas_host->lock); |
| 847 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; |
| 848 | mutex_unlock(&sas_host->lock); |
| 849 | sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d", |
| 850 | shost->host_no, rdev->rphy.scsi_target_id); |
| 851 | rdev->rphy.identify.device_type = type; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 852 | transport_setup_device(&rdev->rphy.dev); |
| 853 | |
| 854 | return &rdev->rphy; |
| 855 | } |
| 856 | EXPORT_SYMBOL(sas_expander_alloc); |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 857 | |
| 858 | /** |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 859 | * sas_rphy_add -- add a SAS remote PHY to the device hierachy |
| 860 | * @rphy: The remote PHY to be added |
| 861 | * |
| 862 | * Publishes a SAS remote PHY to the rest of the system. |
| 863 | */ |
| 864 | int sas_rphy_add(struct sas_rphy *rphy) |
| 865 | { |
| 866 | struct sas_phy *parent = dev_to_phy(rphy->dev.parent); |
| 867 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
| 868 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
| 869 | struct sas_identify *identify = &rphy->identify; |
| 870 | int error; |
| 871 | |
| 872 | if (parent->rphy) |
| 873 | return -ENXIO; |
| 874 | parent->rphy = rphy; |
| 875 | |
| 876 | error = device_add(&rphy->dev); |
| 877 | if (error) |
| 878 | return error; |
| 879 | transport_add_device(&rphy->dev); |
| 880 | transport_configure_device(&rphy->dev); |
| 881 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 882 | mutex_lock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 883 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
| 884 | if (identify->device_type == SAS_END_DEVICE && |
| 885 | (identify->target_port_protocols & |
| 886 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) |
| 887 | rphy->scsi_target_id = sas_host->next_target_id++; |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 888 | mutex_unlock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 889 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 890 | if (identify->device_type == SAS_END_DEVICE && |
| 891 | rphy->scsi_target_id != -1) { |
Moore, Eric | e6bc863 | 2006-01-13 16:33:59 -0700 | [diff] [blame] | 892 | scsi_scan_target(&rphy->dev, parent->port_identifier, |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 893 | rphy->scsi_target_id, ~0, 0); |
| 894 | } |
| 895 | |
| 896 | return 0; |
| 897 | } |
| 898 | EXPORT_SYMBOL(sas_rphy_add); |
| 899 | |
| 900 | /** |
| 901 | * sas_rphy_free -- free a SAS remote PHY |
| 902 | * @rphy SAS remote PHY to free |
| 903 | * |
| 904 | * Frees the specified SAS remote PHY. |
| 905 | * |
| 906 | * Note: |
| 907 | * This function must only be called on a remote |
| 908 | * PHY that has not sucessfully been added using |
| 909 | * sas_rphy_add(). |
| 910 | */ |
| 911 | void sas_rphy_free(struct sas_rphy *rphy) |
| 912 | { |
| 913 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
| 914 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
| 915 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 916 | mutex_lock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 917 | list_del(&rphy->list); |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 918 | mutex_unlock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 919 | |
| 920 | transport_destroy_device(&rphy->dev); |
| 921 | put_device(rphy->dev.parent); |
| 922 | put_device(rphy->dev.parent); |
| 923 | put_device(rphy->dev.parent); |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 924 | if (rphy->identify.device_type == SAS_END_DEVICE) { |
| 925 | struct sas_end_device *edev = rphy_to_end_device(rphy); |
| 926 | |
| 927 | kfree(edev); |
| 928 | } else { |
| 929 | /* must be expander */ |
| 930 | struct sas_expander_device *edev = |
| 931 | rphy_to_expander_device(rphy); |
| 932 | |
| 933 | kfree(edev); |
| 934 | } |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 935 | } |
| 936 | EXPORT_SYMBOL(sas_rphy_free); |
| 937 | |
| 938 | /** |
| 939 | * sas_rphy_delete -- remove SAS remote PHY |
| 940 | * @rphy: SAS remote PHY to remove |
| 941 | * |
| 942 | * Removes the specified SAS remote PHY. |
| 943 | */ |
| 944 | void |
| 945 | sas_rphy_delete(struct sas_rphy *rphy) |
| 946 | { |
| 947 | struct device *dev = &rphy->dev; |
| 948 | struct sas_phy *parent = dev_to_phy(dev->parent); |
| 949 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
| 950 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
| 951 | |
Christoph Hellwig | d405423 | 2006-01-04 13:45:20 +0100 | [diff] [blame] | 952 | switch (rphy->identify.device_type) { |
| 953 | case SAS_END_DEVICE: |
| 954 | scsi_remove_target(dev); |
| 955 | break; |
| 956 | case SAS_EDGE_EXPANDER_DEVICE: |
| 957 | case SAS_FANOUT_EXPANDER_DEVICE: |
| 958 | device_for_each_child(dev, NULL, do_sas_phy_delete); |
| 959 | break; |
| 960 | default: |
| 961 | break; |
| 962 | } |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 963 | |
Christoph Hellwig | fe8b230 | 2005-09-25 23:10:33 +0200 | [diff] [blame] | 964 | transport_remove_device(dev); |
| 965 | device_del(dev); |
| 966 | transport_destroy_device(dev); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 967 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 968 | mutex_lock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 969 | list_del(&rphy->list); |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 970 | mutex_unlock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 971 | |
Christoph Hellwig | 33b114e | 2006-01-11 14:20:43 +0100 | [diff] [blame] | 972 | parent->rphy = NULL; |
| 973 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 974 | put_device(&parent->dev); |
| 975 | } |
| 976 | EXPORT_SYMBOL(sas_rphy_delete); |
| 977 | |
| 978 | /** |
| 979 | * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY |
| 980 | * @dev: device to check |
| 981 | * |
| 982 | * Returns: |
| 983 | * %1 if the device represents a SAS remote PHY, %0 else |
| 984 | */ |
| 985 | int scsi_is_sas_rphy(const struct device *dev) |
| 986 | { |
James Bottomley | 2f8600d | 2006-03-18 15:00:50 -0600 | [diff] [blame] | 987 | return dev->release == sas_end_device_release || |
| 988 | dev->release == sas_expander_release; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 989 | } |
| 990 | EXPORT_SYMBOL(scsi_is_sas_rphy); |
| 991 | |
| 992 | |
| 993 | /* |
| 994 | * SCSI scan helper |
| 995 | */ |
| 996 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 997 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
| 998 | uint id, uint lun) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 999 | { |
| 1000 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); |
| 1001 | struct sas_rphy *rphy; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1002 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1003 | mutex_lock(&sas_host->lock); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1004 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
| 1005 | struct sas_phy *parent = dev_to_phy(rphy->dev.parent); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1006 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1007 | if (rphy->scsi_target_id == -1) |
| 1008 | continue; |
| 1009 | |
Moore, Eric | e6bc863 | 2006-01-13 16:33:59 -0700 | [diff] [blame] | 1010 | if ((channel == SCAN_WILD_CARD || channel == parent->port_identifier) && |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1011 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
Moore, Eric | e6bc863 | 2006-01-13 16:33:59 -0700 | [diff] [blame] | 1012 | scsi_scan_target(&rphy->dev, parent->port_identifier, |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1013 | rphy->scsi_target_id, lun, 1); |
| 1014 | } |
| 1015 | } |
| 1016 | mutex_unlock(&sas_host->lock); |
| 1017 | |
| 1018 | return 0; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1019 | } |
| 1020 | |
| 1021 | |
| 1022 | /* |
| 1023 | * Setup / Teardown code |
| 1024 | */ |
| 1025 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1026 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
| 1027 | i->private_##attrb[count] = class_device_attr_##field; \ |
| 1028 | i->private_##attrb[count].attr.mode = perm; \ |
| 1029 | i->private_##attrb[count].store = NULL; \ |
| 1030 | i->attrb[count] = &i->private_##attrb[count]; \ |
| 1031 | if (test) \ |
| 1032 | count++ |
| 1033 | |
| 1034 | |
| 1035 | #define SETUP_RPORT_ATTRIBUTE(field) \ |
| 1036 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1037 | |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1038 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1039 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1040 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1041 | #define SETUP_PORT_ATTRIBUTE(field) \ |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1042 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1043 | |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1044 | #define SETUP_OPTIONAL_PORT_ATTRIBUTE(field, func) \ |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1045 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1046 | |
Christoph Hellwig | 07ba3a9 | 2005-10-19 20:01:31 +0200 | [diff] [blame] | 1047 | #define SETUP_PORT_ATTRIBUTE_WRONLY(field) \ |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1048 | SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, 1) |
Christoph Hellwig | 07ba3a9 | 2005-10-19 20:01:31 +0200 | [diff] [blame] | 1049 | |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1050 | #define SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(field, func) \ |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1051 | SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, i->f->func) |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1052 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1053 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
| 1054 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1055 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1056 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
| 1057 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) |
| 1058 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1059 | /** |
| 1060 | * sas_attach_transport -- instantiate SAS transport template |
| 1061 | * @ft: SAS transport class function template |
| 1062 | */ |
| 1063 | struct scsi_transport_template * |
| 1064 | sas_attach_transport(struct sas_function_template *ft) |
| 1065 | { |
| 1066 | struct sas_internal *i; |
| 1067 | int count; |
| 1068 | |
Jes Sorensen | 24669f75 | 2006-01-16 10:31:18 -0500 | [diff] [blame] | 1069 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1070 | if (!i) |
| 1071 | return NULL; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1072 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1073 | i->t.user_scan = sas_user_scan; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1074 | |
| 1075 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; |
| 1076 | i->t.host_attrs.ac.class = &sas_host_class.class; |
| 1077 | i->t.host_attrs.ac.match = sas_host_match; |
| 1078 | transport_container_register(&i->t.host_attrs); |
| 1079 | i->t.host_size = sizeof(struct sas_host_attrs); |
| 1080 | |
| 1081 | i->phy_attr_cont.ac.class = &sas_phy_class.class; |
| 1082 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; |
| 1083 | i->phy_attr_cont.ac.match = sas_phy_match; |
| 1084 | transport_container_register(&i->phy_attr_cont); |
| 1085 | |
| 1086 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
| 1087 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; |
| 1088 | i->rphy_attr_cont.ac.match = sas_rphy_match; |
| 1089 | transport_container_register(&i->rphy_attr_cont); |
| 1090 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1091 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
| 1092 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; |
| 1093 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; |
| 1094 | transport_container_register(&i->end_dev_attr_cont); |
| 1095 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1096 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
| 1097 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; |
| 1098 | i->expander_attr_cont.ac.match = sas_expander_match; |
| 1099 | transport_container_register(&i->expander_attr_cont); |
| 1100 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1101 | i->f = ft; |
| 1102 | |
| 1103 | count = 0; |
| 1104 | i->host_attrs[count] = NULL; |
| 1105 | |
| 1106 | count = 0; |
| 1107 | SETUP_PORT_ATTRIBUTE(initiator_port_protocols); |
| 1108 | SETUP_PORT_ATTRIBUTE(target_port_protocols); |
| 1109 | SETUP_PORT_ATTRIBUTE(device_type); |
| 1110 | SETUP_PORT_ATTRIBUTE(sas_address); |
| 1111 | SETUP_PORT_ATTRIBUTE(phy_identifier); |
| 1112 | SETUP_PORT_ATTRIBUTE(port_identifier); |
| 1113 | SETUP_PORT_ATTRIBUTE(negotiated_linkrate); |
| 1114 | SETUP_PORT_ATTRIBUTE(minimum_linkrate_hw); |
| 1115 | SETUP_PORT_ATTRIBUTE(minimum_linkrate); |
| 1116 | SETUP_PORT_ATTRIBUTE(maximum_linkrate_hw); |
| 1117 | SETUP_PORT_ATTRIBUTE(maximum_linkrate); |
Christoph Hellwig | c3ee74c | 2005-09-19 21:59:42 +0200 | [diff] [blame] | 1118 | |
| 1119 | SETUP_PORT_ATTRIBUTE(invalid_dword_count); |
| 1120 | SETUP_PORT_ATTRIBUTE(running_disparity_error_count); |
| 1121 | SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count); |
| 1122 | SETUP_PORT_ATTRIBUTE(phy_reset_problem_count); |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1123 | SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(link_reset, phy_reset); |
| 1124 | SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(hard_reset, phy_reset); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1125 | i->phy_attrs[count] = NULL; |
| 1126 | |
| 1127 | count = 0; |
| 1128 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); |
| 1129 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); |
| 1130 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); |
| 1131 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); |
| 1132 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); |
James Bottomley | dd9fbb52 | 2006-03-02 16:01:31 -0600 | [diff] [blame] | 1133 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
| 1134 | get_enclosure_identifier); |
| 1135 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, |
| 1136 | get_bay_identifier); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1137 | i->rphy_attrs[count] = NULL; |
| 1138 | |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1139 | count = 0; |
| 1140 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); |
| 1141 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); |
| 1142 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); |
| 1143 | i->end_dev_attrs[count] = NULL; |
| 1144 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1145 | count = 0; |
| 1146 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); |
| 1147 | SETUP_EXPANDER_ATTRIBUTE(product_id); |
| 1148 | SETUP_EXPANDER_ATTRIBUTE(product_rev); |
| 1149 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); |
| 1150 | SETUP_EXPANDER_ATTRIBUTE(component_id); |
| 1151 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); |
| 1152 | SETUP_EXPANDER_ATTRIBUTE(level); |
| 1153 | i->expander_attrs[count] = NULL; |
| 1154 | |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1155 | return &i->t; |
| 1156 | } |
| 1157 | EXPORT_SYMBOL(sas_attach_transport); |
| 1158 | |
| 1159 | /** |
| 1160 | * sas_release_transport -- release SAS transport template instance |
| 1161 | * @t: transport template instance |
| 1162 | */ |
| 1163 | void sas_release_transport(struct scsi_transport_template *t) |
| 1164 | { |
| 1165 | struct sas_internal *i = to_sas_internal(t); |
| 1166 | |
| 1167 | transport_container_unregister(&i->t.host_attrs); |
| 1168 | transport_container_unregister(&i->phy_attr_cont); |
| 1169 | transport_container_unregister(&i->rphy_attr_cont); |
James Bottomley | db82f84 | 2006-03-09 22:06:36 -0500 | [diff] [blame] | 1170 | transport_container_unregister(&i->end_dev_attr_cont); |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1171 | transport_container_unregister(&i->expander_attr_cont); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1172 | |
| 1173 | kfree(i); |
| 1174 | } |
| 1175 | EXPORT_SYMBOL(sas_release_transport); |
| 1176 | |
| 1177 | static __init int sas_transport_init(void) |
| 1178 | { |
| 1179 | int error; |
| 1180 | |
| 1181 | error = transport_class_register(&sas_host_class); |
| 1182 | if (error) |
| 1183 | goto out; |
| 1184 | error = transport_class_register(&sas_phy_class); |
| 1185 | if (error) |
| 1186 | goto out_unregister_transport; |
| 1187 | error = transport_class_register(&sas_rphy_class); |
| 1188 | if (error) |
| 1189 | goto out_unregister_phy; |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1190 | error = transport_class_register(&sas_end_dev_class); |
| 1191 | if (error) |
| 1192 | goto out_unregister_rphy; |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1193 | error = transport_class_register(&sas_expander_class); |
| 1194 | if (error) |
| 1195 | goto out_unregister_end_dev; |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1196 | |
| 1197 | return 0; |
| 1198 | |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1199 | out_unregister_end_dev: |
| 1200 | transport_class_unregister(&sas_end_dev_class); |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1201 | out_unregister_rphy: |
| 1202 | transport_class_unregister(&sas_rphy_class); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1203 | out_unregister_phy: |
| 1204 | transport_class_unregister(&sas_phy_class); |
| 1205 | out_unregister_transport: |
| 1206 | transport_class_unregister(&sas_host_class); |
| 1207 | out: |
| 1208 | return error; |
| 1209 | |
| 1210 | } |
| 1211 | |
| 1212 | static void __exit sas_transport_exit(void) |
| 1213 | { |
| 1214 | transport_class_unregister(&sas_host_class); |
| 1215 | transport_class_unregister(&sas_phy_class); |
| 1216 | transport_class_unregister(&sas_rphy_class); |
James Bottomley | 42ab036 | 2006-03-04 09:10:18 -0600 | [diff] [blame] | 1217 | transport_class_unregister(&sas_end_dev_class); |
James Bottomley | 79cb181 | 2006-03-13 13:50:04 -0600 | [diff] [blame] | 1218 | transport_class_unregister(&sas_expander_class); |
Christoph Hellwig | c7ebbbc | 2005-09-09 16:22:50 +0200 | [diff] [blame] | 1219 | } |
| 1220 | |
| 1221 | MODULE_AUTHOR("Christoph Hellwig"); |
| 1222 | MODULE_DESCRIPTION("SAS Transphy Attributes"); |
| 1223 | MODULE_LICENSE("GPL"); |
| 1224 | |
| 1225 | module_init(sas_transport_init); |
| 1226 | module_exit(sas_transport_exit); |