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Commit | Line | Data |
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c7ebbbce | 1 | /* |
a0125641 | 2 | * Copyright (C) 2005-2006 Dell Inc. |
c7ebbbce CH |
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, | |
b1c11812 | 9 | * and various sysfs attributes to expose these topologies and management |
c7ebbbce CH |
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> | |
f6a57033 | 28 | #include <linux/jiffies.h> |
c7ebbbce | 29 | #include <linux/err.h> |
8c65b4a6 TS |
30 | #include <linux/slab.h> |
31 | #include <linux/string.h> | |
7aa68e80 FT |
32 | #include <linux/blkdev.h> |
33 | #include <linux/bsg.h> | |
c7ebbbce | 34 | |
e02f3f59 | 35 | #include <scsi/scsi.h> |
ca18d6f7 | 36 | #include <scsi/scsi_cmnd.h> |
82ed4db4 | 37 | #include <scsi/scsi_request.h> |
c7ebbbce CH |
38 | #include <scsi/scsi_device.h> |
39 | #include <scsi/scsi_host.h> | |
40 | #include <scsi/scsi_transport.h> | |
41 | #include <scsi/scsi_transport_sas.h> | |
42 | ||
d6159c17 | 43 | #include "scsi_sas_internal.h" |
c7ebbbce CH |
44 | struct sas_host_attrs { |
45 | struct list_head rphy_list; | |
e02f3f59 | 46 | struct mutex lock; |
b6aff669 | 47 | struct request_queue *q; |
c7ebbbce | 48 | u32 next_target_id; |
79cb1819 | 49 | u32 next_expander_id; |
c9fefeb2 | 50 | int next_port_id; |
c7ebbbce CH |
51 | }; |
52 | #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) | |
53 | ||
54 | ||
55 | /* | |
56 | * Hack to allow attributes of the same name in different objects. | |
57 | */ | |
ee959b00 TJ |
58 | #define SAS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
59 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
c7ebbbce CH |
60 | __ATTR(_name,_mode,_show,_store) |
61 | ||
62 | ||
63 | /* | |
64 | * Pretty printing helpers | |
65 | */ | |
66 | ||
67 | #define sas_bitfield_name_match(title, table) \ | |
68 | static ssize_t \ | |
69 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
70 | { \ | |
71 | char *prefix = ""; \ | |
72 | ssize_t len = 0; \ | |
73 | int i; \ | |
74 | \ | |
6391a113 | 75 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
76 | if (table[i].value & table_key) { \ |
77 | len += sprintf(buf + len, "%s%s", \ | |
78 | prefix, table[i].name); \ | |
79 | prefix = ", "; \ | |
80 | } \ | |
81 | } \ | |
82 | len += sprintf(buf + len, "\n"); \ | |
83 | return len; \ | |
84 | } | |
85 | ||
d24e1eeb JB |
86 | #define sas_bitfield_name_set(title, table) \ |
87 | static ssize_t \ | |
88 | set_sas_##title##_names(u32 *table_key, const char *buf) \ | |
89 | { \ | |
90 | ssize_t len = 0; \ | |
91 | int i; \ | |
92 | \ | |
93 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ | |
94 | len = strlen(table[i].name); \ | |
95 | if (strncmp(buf, table[i].name, len) == 0 && \ | |
96 | (buf[len] == '\n' || buf[len] == '\0')) { \ | |
97 | *table_key = table[i].value; \ | |
98 | return 0; \ | |
99 | } \ | |
100 | } \ | |
101 | return -EINVAL; \ | |
102 | } | |
103 | ||
c7ebbbce CH |
104 | #define sas_bitfield_name_search(title, table) \ |
105 | static ssize_t \ | |
106 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
107 | { \ | |
108 | ssize_t len = 0; \ | |
109 | int i; \ | |
110 | \ | |
6391a113 | 111 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
112 | if (table[i].value == table_key) { \ |
113 | len += sprintf(buf + len, "%s", \ | |
114 | table[i].name); \ | |
115 | break; \ | |
116 | } \ | |
117 | } \ | |
118 | len += sprintf(buf + len, "\n"); \ | |
119 | return len; \ | |
120 | } | |
121 | ||
122 | static struct { | |
123 | u32 value; | |
124 | char *name; | |
125 | } sas_device_type_names[] = { | |
126 | { SAS_PHY_UNUSED, "unused" }, | |
127 | { SAS_END_DEVICE, "end device" }, | |
128 | { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, | |
129 | { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, | |
130 | }; | |
131 | sas_bitfield_name_search(device_type, sas_device_type_names) | |
132 | ||
133 | ||
134 | static struct { | |
135 | u32 value; | |
136 | char *name; | |
137 | } sas_protocol_names[] = { | |
138 | { SAS_PROTOCOL_SATA, "sata" }, | |
139 | { SAS_PROTOCOL_SMP, "smp" }, | |
140 | { SAS_PROTOCOL_STP, "stp" }, | |
141 | { SAS_PROTOCOL_SSP, "ssp" }, | |
142 | }; | |
143 | sas_bitfield_name_match(protocol, sas_protocol_names) | |
144 | ||
145 | static struct { | |
146 | u32 value; | |
147 | char *name; | |
148 | } sas_linkspeed_names[] = { | |
149 | { SAS_LINK_RATE_UNKNOWN, "Unknown" }, | |
150 | { SAS_PHY_DISABLED, "Phy disabled" }, | |
151 | { SAS_LINK_RATE_FAILED, "Link Rate failed" }, | |
152 | { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, | |
153 | { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, | |
154 | { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, | |
7e6dff62 | 155 | { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, |
d84fd392 | 156 | { SAS_LINK_RATE_12_0_GBPS, "12.0 Gbit" }, |
c7ebbbce CH |
157 | }; |
158 | sas_bitfield_name_search(linkspeed, sas_linkspeed_names) | |
d24e1eeb | 159 | sas_bitfield_name_set(linkspeed, sas_linkspeed_names) |
c7ebbbce | 160 | |
0f88009d JB |
161 | static struct sas_end_device *sas_sdev_to_rdev(struct scsi_device *sdev) |
162 | { | |
163 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
164 | struct sas_end_device *rdev; | |
165 | ||
166 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
167 | ||
168 | rdev = rphy_to_end_device(rphy); | |
169 | return rdev; | |
170 | } | |
171 | ||
7aa68e80 FT |
172 | static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost, |
173 | struct sas_rphy *rphy) | |
174 | { | |
175 | struct request *req; | |
2a842aca | 176 | blk_status_t ret; |
7aa68e80 FT |
177 | int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); |
178 | ||
7eaceacc | 179 | while ((req = blk_fetch_request(q)) != NULL) { |
7aa68e80 FT |
180 | spin_unlock_irq(q->queue_lock); |
181 | ||
82ed4db4 CH |
182 | scsi_req(req)->resid_len = blk_rq_bytes(req); |
183 | if (req->next_rq) | |
184 | scsi_req(req->next_rq)->resid_len = | |
185 | blk_rq_bytes(req->next_rq); | |
7aa68e80 FT |
186 | handler = to_sas_internal(shost->transportt)->f->smp_handler; |
187 | ret = handler(shost, rphy, req); | |
17d5363b | 188 | scsi_req(req)->result = ret; |
7aa68e80 | 189 | |
d188b90c | 190 | blk_end_request_all(req, 0); |
7aa68e80 | 191 | |
93bdcba5 | 192 | spin_lock_irq(q->queue_lock); |
7aa68e80 FT |
193 | } |
194 | } | |
195 | ||
196 | static void sas_host_smp_request(struct request_queue *q) | |
197 | { | |
198 | sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); | |
199 | } | |
200 | ||
201 | static void sas_non_host_smp_request(struct request_queue *q) | |
202 | { | |
203 | struct sas_rphy *rphy = q->queuedata; | |
204 | sas_smp_request(q, rphy_to_shost(rphy), rphy); | |
205 | } | |
206 | ||
93c20a59 FT |
207 | static void sas_host_release(struct device *dev) |
208 | { | |
209 | struct Scsi_Host *shost = dev_to_shost(dev); | |
210 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
211 | struct request_queue *q = sas_host->q; | |
212 | ||
213 | if (q) | |
214 | blk_cleanup_queue(q); | |
215 | } | |
216 | ||
39dca558 | 217 | static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) |
7aa68e80 FT |
218 | { |
219 | struct request_queue *q; | |
220 | int error; | |
39dca558 | 221 | struct device *dev; |
71610f55 | 222 | char namebuf[20]; |
39dca558 | 223 | const char *name; |
93c20a59 | 224 | void (*release)(struct device *); |
7aa68e80 FT |
225 | |
226 | if (!to_sas_internal(shost->transportt)->f->smp_handler) { | |
227 | printk("%s can't handle SMP requests\n", shost->hostt->name); | |
228 | return 0; | |
229 | } | |
230 | ||
bd1599d9 OS |
231 | q = blk_alloc_queue(GFP_KERNEL); |
232 | if (!q) | |
233 | return -ENOMEM; | |
ca18d6f7 | 234 | q->initialize_rq_fn = scsi_initialize_rq; |
bd1599d9 OS |
235 | q->cmd_size = sizeof(struct scsi_request); |
236 | ||
39dca558 | 237 | if (rphy) { |
bd1599d9 | 238 | q->request_fn = sas_non_host_smp_request; |
39dca558 | 239 | dev = &rphy->dev; |
71610f55 | 240 | name = dev_name(dev); |
93c20a59 | 241 | release = NULL; |
39dca558 | 242 | } else { |
bd1599d9 | 243 | q->request_fn = sas_host_smp_request; |
39dca558 JB |
244 | dev = &shost->shost_gendev; |
245 | snprintf(namebuf, sizeof(namebuf), | |
246 | "sas_host%d", shost->host_no); | |
247 | name = namebuf; | |
93c20a59 | 248 | release = sas_host_release; |
39dca558 | 249 | } |
bd1599d9 OS |
250 | error = blk_init_allocated_queue(q); |
251 | if (error) | |
252 | goto out_cleanup_queue; | |
7aa68e80 | 253 | |
0bf6595e CH |
254 | /* |
255 | * by default assume old behaviour and bounce for any highmem page | |
256 | */ | |
257 | blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH); | |
258 | ||
93c20a59 | 259 | error = bsg_register_queue(q, dev, name, release); |
bd1599d9 OS |
260 | if (error) |
261 | goto out_cleanup_queue; | |
7aa68e80 | 262 | |
b6aff669 JB |
263 | if (rphy) |
264 | rphy->q = q; | |
265 | else | |
266 | to_sas_host_attrs(shost)->q = q; | |
267 | ||
7aa68e80 FT |
268 | if (rphy) |
269 | q->queuedata = rphy; | |
270 | else | |
271 | q->queuedata = shost; | |
272 | ||
75ad23bc | 273 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); |
9efc160f | 274 | queue_flag_set_unlocked(QUEUE_FLAG_SCSI_PASSTHROUGH, q); |
7aa68e80 | 275 | return 0; |
bd1599d9 OS |
276 | |
277 | out_cleanup_queue: | |
278 | blk_cleanup_queue(q); | |
279 | return error; | |
7aa68e80 FT |
280 | } |
281 | ||
b6aff669 JB |
282 | static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy) |
283 | { | |
284 | struct request_queue *q; | |
285 | ||
286 | if (rphy) | |
287 | q = rphy->q; | |
288 | else | |
289 | q = to_sas_host_attrs(shost)->q; | |
290 | ||
291 | if (!q) | |
292 | return; | |
293 | ||
294 | bsg_unregister_queue(q); | |
b6aff669 JB |
295 | } |
296 | ||
c7ebbbce CH |
297 | /* |
298 | * SAS host attributes | |
299 | */ | |
300 | ||
37be6eeb | 301 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 302 | struct device *cdev) |
c7ebbbce CH |
303 | { |
304 | struct Scsi_Host *shost = dev_to_shost(dev); | |
305 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
306 | ||
307 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 308 | mutex_init(&sas_host->lock); |
c7ebbbce | 309 | sas_host->next_target_id = 0; |
79cb1819 | 310 | sas_host->next_expander_id = 0; |
c9fefeb2 | 311 | sas_host->next_port_id = 0; |
7aa68e80 | 312 | |
39dca558 | 313 | if (sas_bsg_initialize(shost, NULL)) |
7aa68e80 FT |
314 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", |
315 | shost->host_no); | |
316 | ||
c7ebbbce CH |
317 | return 0; |
318 | } | |
319 | ||
b6aff669 | 320 | static int sas_host_remove(struct transport_container *tc, struct device *dev, |
ee959b00 | 321 | struct device *cdev) |
b6aff669 JB |
322 | { |
323 | struct Scsi_Host *shost = dev_to_shost(dev); | |
324 | ||
325 | sas_bsg_remove(shost, NULL); | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
c7ebbbce | 330 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
b6aff669 | 331 | "sas_host", sas_host_setup, sas_host_remove, NULL); |
c7ebbbce CH |
332 | |
333 | static int sas_host_match(struct attribute_container *cont, | |
334 | struct device *dev) | |
335 | { | |
336 | struct Scsi_Host *shost; | |
337 | struct sas_internal *i; | |
338 | ||
339 | if (!scsi_is_host_device(dev)) | |
340 | return 0; | |
341 | shost = dev_to_shost(dev); | |
342 | ||
343 | if (!shost->transportt) | |
344 | return 0; | |
345 | if (shost->transportt->host_attrs.ac.class != | |
346 | &sas_host_class.class) | |
347 | return 0; | |
348 | ||
349 | i = to_sas_internal(shost->transportt); | |
350 | return &i->t.host_attrs.ac == cont; | |
351 | } | |
352 | ||
353 | static int do_sas_phy_delete(struct device *dev, void *data) | |
354 | { | |
65c92b09 JB |
355 | int pass = (int)(unsigned long)data; |
356 | ||
357 | if (pass == 0 && scsi_is_sas_port(dev)) | |
358 | sas_port_delete(dev_to_sas_port(dev)); | |
359 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
360 | sas_phy_delete(dev_to_phy(dev)); |
361 | return 0; | |
362 | } | |
363 | ||
65c92b09 | 364 | /** |
eb44820c | 365 | * sas_remove_children - tear down a devices SAS data structures |
65c92b09 JB |
366 | * @dev: device belonging to the sas object |
367 | * | |
368 | * Removes all SAS PHYs and remote PHYs for a given object | |
369 | */ | |
370 | void sas_remove_children(struct device *dev) | |
371 | { | |
372 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
373 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
374 | } | |
375 | EXPORT_SYMBOL(sas_remove_children); | |
376 | ||
c7ebbbce | 377 | /** |
eb44820c | 378 | * sas_remove_host - tear down a Scsi_Host's SAS data structures |
c7ebbbce CH |
379 | * @shost: Scsi Host that is torn down |
380 | * | |
c5ce0abe JT |
381 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host and remove the |
382 | * Scsi_Host as well. | |
383 | * | |
384 | * Note: Do not call scsi_remove_host() on the Scsi_Host any more, as it is | |
385 | * already removed. | |
c7ebbbce CH |
386 | */ |
387 | void sas_remove_host(struct Scsi_Host *shost) | |
388 | { | |
65c92b09 | 389 | sas_remove_children(&shost->shost_gendev); |
c5ce0abe | 390 | scsi_remove_host(shost); |
c7ebbbce CH |
391 | } |
392 | EXPORT_SYMBOL(sas_remove_host); | |
393 | ||
bcf508c1 JB |
394 | /** |
395 | * sas_get_address - return the SAS address of the device | |
396 | * @sdev: scsi device | |
397 | * | |
398 | * Returns the SAS address of the scsi device | |
399 | */ | |
400 | u64 sas_get_address(struct scsi_device *sdev) | |
401 | { | |
402 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
403 | ||
404 | return rdev->rphy.identify.sas_address; | |
405 | } | |
406 | EXPORT_SYMBOL(sas_get_address); | |
407 | ||
0f88009d JB |
408 | /** |
409 | * sas_tlr_supported - checking TLR bit in vpd 0x90 | |
410 | * @sdev: scsi device struct | |
411 | * | |
412 | * Check Transport Layer Retries are supported or not. | |
413 | * If vpd page 0x90 is present, TRL is supported. | |
414 | * | |
415 | */ | |
416 | unsigned int | |
417 | sas_tlr_supported(struct scsi_device *sdev) | |
418 | { | |
419 | const int vpd_len = 32; | |
420 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
421 | char *buffer = kzalloc(vpd_len, GFP_KERNEL); | |
422 | int ret = 0; | |
423 | ||
424 | if (scsi_get_vpd_page(sdev, 0x90, buffer, vpd_len)) | |
425 | goto out; | |
426 | ||
427 | /* | |
428 | * Magic numbers: the VPD Protocol page (0x90) | |
429 | * has a 4 byte header and then one entry per device port | |
430 | * the TLR bit is at offset 8 on each port entry | |
431 | * if we take the first port, that's at total offset 12 | |
432 | */ | |
433 | ret = buffer[12] & 0x01; | |
434 | ||
435 | out: | |
436 | kfree(buffer); | |
437 | rdev->tlr_supported = ret; | |
438 | return ret; | |
439 | ||
440 | } | |
441 | EXPORT_SYMBOL_GPL(sas_tlr_supported); | |
442 | ||
443 | /** | |
444 | * sas_disable_tlr - setting TLR flags | |
445 | * @sdev: scsi device struct | |
446 | * | |
447 | * Seting tlr_enabled flag to 0. | |
448 | * | |
449 | */ | |
450 | void | |
451 | sas_disable_tlr(struct scsi_device *sdev) | |
452 | { | |
453 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
454 | ||
455 | rdev->tlr_enabled = 0; | |
456 | } | |
457 | EXPORT_SYMBOL_GPL(sas_disable_tlr); | |
458 | ||
459 | /** | |
460 | * sas_enable_tlr - setting TLR flags | |
461 | * @sdev: scsi device struct | |
462 | * | |
463 | * Seting tlr_enabled flag 1. | |
464 | * | |
465 | */ | |
466 | void sas_enable_tlr(struct scsi_device *sdev) | |
467 | { | |
468 | unsigned int tlr_supported = 0; | |
469 | tlr_supported = sas_tlr_supported(sdev); | |
470 | ||
471 | if (tlr_supported) { | |
472 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
473 | ||
474 | rdev->tlr_enabled = 1; | |
475 | } | |
476 | ||
477 | return; | |
478 | } | |
479 | EXPORT_SYMBOL_GPL(sas_enable_tlr); | |
480 | ||
481 | unsigned int sas_is_tlr_enabled(struct scsi_device *sdev) | |
482 | { | |
483 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
484 | return rdev->tlr_enabled; | |
485 | } | |
486 | EXPORT_SYMBOL_GPL(sas_is_tlr_enabled); | |
c7ebbbce CH |
487 | |
488 | /* | |
65c92b09 | 489 | * SAS Phy attributes |
c7ebbbce CH |
490 | */ |
491 | ||
492 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
493 | static ssize_t \ | |
ee959b00 TJ |
494 | show_sas_phy_##name(struct device *dev, \ |
495 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 496 | { \ |
ee959b00 | 497 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
498 | \ |
499 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
500 | } | |
501 | ||
502 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
503 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 504 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
505 | |
506 | #define sas_phy_show_protocol(field, name) \ | |
507 | static ssize_t \ | |
ee959b00 TJ |
508 | show_sas_phy_##name(struct device *dev, \ |
509 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 510 | { \ |
ee959b00 | 511 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
512 | \ |
513 | if (!phy->field) \ | |
514 | return snprintf(buf, 20, "none\n"); \ | |
515 | return get_sas_protocol_names(phy->field, buf); \ | |
516 | } | |
517 | ||
518 | #define sas_phy_protocol_attr(field, name) \ | |
519 | sas_phy_show_protocol(field, name) \ | |
ee959b00 | 520 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
521 | |
522 | #define sas_phy_show_linkspeed(field) \ | |
523 | static ssize_t \ | |
ee959b00 TJ |
524 | show_sas_phy_##field(struct device *dev, \ |
525 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 526 | { \ |
ee959b00 | 527 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
528 | \ |
529 | return get_sas_linkspeed_names(phy->field, buf); \ | |
530 | } | |
531 | ||
d24e1eeb JB |
532 | /* Fudge to tell if we're minimum or maximum */ |
533 | #define sas_phy_store_linkspeed(field) \ | |
534 | static ssize_t \ | |
ee959b00 TJ |
535 | store_sas_phy_##field(struct device *dev, \ |
536 | struct device_attribute *attr, \ | |
537 | const char *buf, size_t count) \ | |
d24e1eeb | 538 | { \ |
ee959b00 | 539 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
d24e1eeb JB |
540 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
541 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
542 | u32 value; \ | |
543 | struct sas_phy_linkrates rates = {0}; \ | |
544 | int error; \ | |
545 | \ | |
546 | error = set_sas_linkspeed_names(&value, buf); \ | |
547 | if (error) \ | |
548 | return error; \ | |
549 | rates.field = value; \ | |
550 | error = i->f->set_phy_speed(phy, &rates); \ | |
551 | \ | |
552 | return error ? error : count; \ | |
553 | } | |
554 | ||
555 | #define sas_phy_linkspeed_rw_attr(field) \ | |
556 | sas_phy_show_linkspeed(field) \ | |
557 | sas_phy_store_linkspeed(field) \ | |
ee959b00 | 558 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ |
d24e1eeb JB |
559 | store_sas_phy_##field) |
560 | ||
c7ebbbce CH |
561 | #define sas_phy_linkspeed_attr(field) \ |
562 | sas_phy_show_linkspeed(field) \ | |
ee959b00 | 563 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c7ebbbce | 564 | |
d24e1eeb | 565 | |
c3ee74c4 CH |
566 | #define sas_phy_show_linkerror(field) \ |
567 | static ssize_t \ | |
ee959b00 TJ |
568 | show_sas_phy_##field(struct device *dev, \ |
569 | struct device_attribute *attr, char *buf) \ | |
c3ee74c4 | 570 | { \ |
ee959b00 | 571 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c3ee74c4 CH |
572 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
573 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
574 | int error; \ | |
575 | \ | |
dd9fbb52 | 576 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
577 | if (error) \ |
578 | return error; \ | |
579 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
580 | } | |
581 | ||
582 | #define sas_phy_linkerror_attr(field) \ | |
583 | sas_phy_show_linkerror(field) \ | |
ee959b00 | 584 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c3ee74c4 CH |
585 | |
586 | ||
c7ebbbce | 587 | static ssize_t |
ee959b00 TJ |
588 | show_sas_device_type(struct device *dev, |
589 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 590 | { |
ee959b00 | 591 | struct sas_phy *phy = transport_class_to_phy(dev); |
c7ebbbce CH |
592 | |
593 | if (!phy->identify.device_type) | |
594 | return snprintf(buf, 20, "none\n"); | |
595 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
596 | } | |
ee959b00 | 597 | static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
c7ebbbce | 598 | |
ee959b00 | 599 | static ssize_t do_sas_phy_enable(struct device *dev, |
acbf167d DW |
600 | size_t count, int enable) |
601 | { | |
ee959b00 | 602 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
603 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
604 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
605 | int error; | |
606 | ||
607 | error = i->f->phy_enable(phy, enable); | |
608 | if (error) | |
609 | return error; | |
610 | phy->enabled = enable; | |
611 | return count; | |
612 | }; | |
613 | ||
ee959b00 TJ |
614 | static ssize_t |
615 | store_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
616 | const char *buf, size_t count) | |
acbf167d DW |
617 | { |
618 | if (count < 1) | |
619 | return -EINVAL; | |
620 | ||
621 | switch (buf[0]) { | |
622 | case '0': | |
ee959b00 | 623 | do_sas_phy_enable(dev, count, 0); |
acbf167d DW |
624 | break; |
625 | case '1': | |
ee959b00 | 626 | do_sas_phy_enable(dev, count, 1); |
acbf167d DW |
627 | break; |
628 | default: | |
629 | return -EINVAL; | |
630 | } | |
631 | ||
632 | return count; | |
633 | } | |
634 | ||
ee959b00 TJ |
635 | static ssize_t |
636 | show_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
637 | char *buf) | |
acbf167d | 638 | { |
ee959b00 | 639 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
640 | |
641 | return snprintf(buf, 20, "%d", phy->enabled); | |
642 | } | |
643 | ||
ee959b00 | 644 | static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, |
acbf167d DW |
645 | store_sas_phy_enable); |
646 | ||
ee959b00 TJ |
647 | static ssize_t |
648 | do_sas_phy_reset(struct device *dev, size_t count, int hard_reset) | |
07ba3a95 | 649 | { |
ee959b00 | 650 | struct sas_phy *phy = transport_class_to_phy(dev); |
07ba3a95 CH |
651 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
652 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
653 | int error; | |
654 | ||
07ba3a95 CH |
655 | error = i->f->phy_reset(phy, hard_reset); |
656 | if (error) | |
657 | return error; | |
16d3db1b | 658 | phy->enabled = 1; |
07ba3a95 CH |
659 | return count; |
660 | }; | |
661 | ||
ee959b00 TJ |
662 | static ssize_t |
663 | store_sas_link_reset(struct device *dev, struct device_attribute *attr, | |
664 | const char *buf, size_t count) | |
07ba3a95 | 665 | { |
ee959b00 | 666 | return do_sas_phy_reset(dev, count, 0); |
07ba3a95 | 667 | } |
ee959b00 | 668 | static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); |
07ba3a95 | 669 | |
ee959b00 TJ |
670 | static ssize_t |
671 | store_sas_hard_reset(struct device *dev, struct device_attribute *attr, | |
672 | const char *buf, size_t count) | |
07ba3a95 | 673 | { |
ee959b00 | 674 | return do_sas_phy_reset(dev, count, 1); |
07ba3a95 | 675 | } |
ee959b00 | 676 | static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); |
07ba3a95 | 677 | |
c7ebbbce CH |
678 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
679 | initiator_port_protocols); | |
680 | sas_phy_protocol_attr(identify.target_port_protocols, | |
681 | target_port_protocols); | |
682 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
683 | unsigned long long); | |
684 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 685 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
686 | sas_phy_linkspeed_attr(negotiated_linkrate); |
687 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 688 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 689 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 690 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
691 | sas_phy_linkerror_attr(invalid_dword_count); |
692 | sas_phy_linkerror_attr(running_disparity_error_count); | |
693 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
694 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce | 695 | |
0b3e09da DW |
696 | static int sas_phy_setup(struct transport_container *tc, struct device *dev, |
697 | struct device *cdev) | |
698 | { | |
699 | struct sas_phy *phy = dev_to_phy(dev); | |
700 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
701 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
702 | ||
703 | if (i->f->phy_setup) | |
704 | i->f->phy_setup(phy); | |
705 | ||
706 | return 0; | |
707 | } | |
c7ebbbce CH |
708 | |
709 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
0b3e09da | 710 | "sas_phy", sas_phy_setup, NULL, NULL); |
c7ebbbce CH |
711 | |
712 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
713 | { | |
714 | struct Scsi_Host *shost; | |
715 | struct sas_internal *i; | |
716 | ||
717 | if (!scsi_is_sas_phy(dev)) | |
718 | return 0; | |
719 | shost = dev_to_shost(dev->parent); | |
720 | ||
721 | if (!shost->transportt) | |
722 | return 0; | |
723 | if (shost->transportt->host_attrs.ac.class != | |
724 | &sas_host_class.class) | |
725 | return 0; | |
726 | ||
727 | i = to_sas_internal(shost->transportt); | |
728 | return &i->phy_attr_cont.ac == cont; | |
729 | } | |
730 | ||
731 | static void sas_phy_release(struct device *dev) | |
732 | { | |
733 | struct sas_phy *phy = dev_to_phy(dev); | |
0b3e09da DW |
734 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
735 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
c7ebbbce | 736 | |
0b3e09da DW |
737 | if (i->f->phy_release) |
738 | i->f->phy_release(phy); | |
c7ebbbce CH |
739 | put_device(dev->parent); |
740 | kfree(phy); | |
741 | } | |
742 | ||
743 | /** | |
eb44820c | 744 | * sas_phy_alloc - allocates and initialize a SAS PHY structure |
c7ebbbce | 745 | * @parent: Parent device |
d99ca418 | 746 | * @number: Phy index |
c7ebbbce CH |
747 | * |
748 | * Allocates an SAS PHY structure. It will be added in the device tree | |
749 | * below the device specified by @parent, which has to be either a Scsi_Host | |
750 | * or sas_rphy. | |
751 | * | |
752 | * Returns: | |
753 | * SAS PHY allocated or %NULL if the allocation failed. | |
754 | */ | |
755 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
756 | { | |
757 | struct Scsi_Host *shost = dev_to_shost(parent); | |
758 | struct sas_phy *phy; | |
759 | ||
24669f75 | 760 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
761 | if (!phy) |
762 | return NULL; | |
c7ebbbce | 763 | |
c7ebbbce | 764 | phy->number = number; |
acbf167d | 765 | phy->enabled = 1; |
c7ebbbce CH |
766 | |
767 | device_initialize(&phy->dev); | |
768 | phy->dev.parent = get_device(parent); | |
769 | phy->dev.release = sas_phy_release; | |
65c92b09 | 770 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
771 | if (scsi_is_sas_expander_device(parent)) { |
772 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 | 773 | dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
774 | rphy->scsi_target_id, number); |
775 | } else | |
71610f55 | 776 | dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number); |
c7ebbbce CH |
777 | |
778 | transport_setup_device(&phy->dev); | |
779 | ||
780 | return phy; | |
781 | } | |
782 | EXPORT_SYMBOL(sas_phy_alloc); | |
783 | ||
784 | /** | |
eb44820c | 785 | * sas_phy_add - add a SAS PHY to the device hierarchy |
c7ebbbce CH |
786 | * @phy: The PHY to be added |
787 | * | |
788 | * Publishes a SAS PHY to the rest of the system. | |
789 | */ | |
790 | int sas_phy_add(struct sas_phy *phy) | |
791 | { | |
792 | int error; | |
793 | ||
794 | error = device_add(&phy->dev); | |
795 | if (!error) { | |
796 | transport_add_device(&phy->dev); | |
797 | transport_configure_device(&phy->dev); | |
798 | } | |
799 | ||
800 | return error; | |
801 | } | |
802 | EXPORT_SYMBOL(sas_phy_add); | |
803 | ||
804 | /** | |
eb44820c | 805 | * sas_phy_free - free a SAS PHY |
c7ebbbce CH |
806 | * @phy: SAS PHY to free |
807 | * | |
808 | * Frees the specified SAS PHY. | |
809 | * | |
810 | * Note: | |
811 | * This function must only be called on a PHY that has not | |
af901ca1 | 812 | * successfully been added using sas_phy_add(). |
c7ebbbce CH |
813 | */ |
814 | void sas_phy_free(struct sas_phy *phy) | |
815 | { | |
816 | transport_destroy_device(&phy->dev); | |
92aab646 | 817 | put_device(&phy->dev); |
c7ebbbce CH |
818 | } |
819 | EXPORT_SYMBOL(sas_phy_free); | |
820 | ||
821 | /** | |
eb44820c | 822 | * sas_phy_delete - remove SAS PHY |
c7ebbbce CH |
823 | * @phy: SAS PHY to remove |
824 | * | |
825 | * Removes the specified SAS PHY. If the SAS PHY has an | |
826 | * associated remote PHY it is removed before. | |
827 | */ | |
828 | void | |
829 | sas_phy_delete(struct sas_phy *phy) | |
830 | { | |
831 | struct device *dev = &phy->dev; | |
832 | ||
65c92b09 JB |
833 | /* this happens if the phy is still part of a port when deleted */ |
834 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
835 | |
836 | transport_remove_device(dev); | |
837 | device_del(dev); | |
838 | transport_destroy_device(dev); | |
92aab646 | 839 | put_device(dev); |
c7ebbbce CH |
840 | } |
841 | EXPORT_SYMBOL(sas_phy_delete); | |
842 | ||
843 | /** | |
eb44820c | 844 | * scsi_is_sas_phy - check if a struct device represents a SAS PHY |
c7ebbbce CH |
845 | * @dev: device to check |
846 | * | |
847 | * Returns: | |
848 | * %1 if the device represents a SAS PHY, %0 else | |
849 | */ | |
850 | int scsi_is_sas_phy(const struct device *dev) | |
851 | { | |
852 | return dev->release == sas_phy_release; | |
853 | } | |
854 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
855 | ||
65c92b09 JB |
856 | /* |
857 | * SAS Port attributes | |
858 | */ | |
859 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
860 | static ssize_t \ | |
ee959b00 TJ |
861 | show_sas_port_##name(struct device *dev, \ |
862 | struct device_attribute *attr, char *buf) \ | |
65c92b09 | 863 | { \ |
ee959b00 | 864 | struct sas_port *port = transport_class_to_sas_port(dev); \ |
65c92b09 JB |
865 | \ |
866 | return snprintf(buf, 20, format_string, cast port->field); \ | |
867 | } | |
868 | ||
869 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
870 | sas_port_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 871 | static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) |
65c92b09 JB |
872 | |
873 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
874 | ||
875 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
876 | "sas_port", NULL, NULL, NULL); | |
877 | ||
878 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
879 | { | |
880 | struct Scsi_Host *shost; | |
881 | struct sas_internal *i; | |
882 | ||
883 | if (!scsi_is_sas_port(dev)) | |
884 | return 0; | |
885 | shost = dev_to_shost(dev->parent); | |
886 | ||
887 | if (!shost->transportt) | |
888 | return 0; | |
889 | if (shost->transportt->host_attrs.ac.class != | |
890 | &sas_host_class.class) | |
891 | return 0; | |
892 | ||
893 | i = to_sas_internal(shost->transportt); | |
894 | return &i->port_attr_cont.ac == cont; | |
895 | } | |
896 | ||
897 | ||
898 | static void sas_port_release(struct device *dev) | |
899 | { | |
900 | struct sas_port *port = dev_to_sas_port(dev); | |
901 | ||
902 | BUG_ON(!list_empty(&port->phy_list)); | |
903 | ||
904 | put_device(dev->parent); | |
905 | kfree(port); | |
906 | } | |
907 | ||
908 | static void sas_port_create_link(struct sas_port *port, | |
909 | struct sas_phy *phy) | |
910 | { | |
21434966 DW |
911 | int res; |
912 | ||
913 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
71610f55 | 914 | dev_name(&phy->dev)); |
21434966 DW |
915 | if (res) |
916 | goto err; | |
917 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
918 | if (res) | |
919 | goto err; | |
920 | return; | |
921 | err: | |
922 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
cadbd4a5 | 923 | __func__, res); |
65c92b09 JB |
924 | } |
925 | ||
926 | static void sas_port_delete_link(struct sas_port *port, | |
927 | struct sas_phy *phy) | |
928 | { | |
71610f55 | 929 | sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev)); |
65c92b09 JB |
930 | sysfs_remove_link(&phy->dev.kobj, "port"); |
931 | } | |
932 | ||
933 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
934 | * | |
935 | * @parent: parent device | |
936 | * @port_id: port number | |
937 | * | |
938 | * Allocates a SAS port structure. It will be added to the device tree | |
939 | * below the device specified by @parent which must be either a Scsi_Host | |
940 | * or a sas_expander_device. | |
941 | * | |
942 | * Returns %NULL on error | |
943 | */ | |
944 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
945 | { | |
946 | struct Scsi_Host *shost = dev_to_shost(parent); | |
947 | struct sas_port *port; | |
948 | ||
949 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
950 | if (!port) | |
951 | return NULL; | |
952 | ||
953 | port->port_identifier = port_id; | |
954 | ||
955 | device_initialize(&port->dev); | |
956 | ||
957 | port->dev.parent = get_device(parent); | |
958 | port->dev.release = sas_port_release; | |
959 | ||
960 | mutex_init(&port->phy_list_mutex); | |
961 | INIT_LIST_HEAD(&port->phy_list); | |
962 | ||
963 | if (scsi_is_sas_expander_device(parent)) { | |
964 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 KS |
965 | dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no, |
966 | rphy->scsi_target_id, port->port_identifier); | |
65c92b09 | 967 | } else |
71610f55 KS |
968 | dev_set_name(&port->dev, "port-%d:%d", shost->host_no, |
969 | port->port_identifier); | |
65c92b09 JB |
970 | |
971 | transport_setup_device(&port->dev); | |
972 | ||
973 | return port; | |
974 | } | |
975 | EXPORT_SYMBOL(sas_port_alloc); | |
976 | ||
c9fefeb2 JB |
977 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
978 | * | |
979 | * @parent: parent device | |
980 | * | |
981 | * Allocates a SAS port structure and a number to go with it. This | |
982 | * interface is really for adapters where the port number has no | |
983 | * meansing, so the sas class should manage them. It will be added to | |
984 | * the device tree below the device specified by @parent which must be | |
985 | * either a Scsi_Host or a sas_expander_device. | |
986 | * | |
987 | * Returns %NULL on error | |
988 | */ | |
989 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
990 | { | |
991 | int index; | |
992 | struct Scsi_Host *shost = dev_to_shost(parent); | |
993 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
994 | ||
995 | /* FIXME: use idr for this eventually */ | |
996 | mutex_lock(&sas_host->lock); | |
997 | if (scsi_is_sas_expander_device(parent)) { | |
998 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
999 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
1000 | ||
1001 | index = exp->next_port_id++; | |
1002 | } else | |
1003 | index = sas_host->next_port_id++; | |
1004 | mutex_unlock(&sas_host->lock); | |
1005 | return sas_port_alloc(parent, index); | |
1006 | } | |
1007 | EXPORT_SYMBOL(sas_port_alloc_num); | |
1008 | ||
65c92b09 JB |
1009 | /** |
1010 | * sas_port_add - add a SAS port to the device hierarchy | |
65c92b09 JB |
1011 | * @port: port to be added |
1012 | * | |
1013 | * publishes a port to the rest of the system | |
1014 | */ | |
1015 | int sas_port_add(struct sas_port *port) | |
1016 | { | |
1017 | int error; | |
1018 | ||
1019 | /* No phys should be added until this is made visible */ | |
1020 | BUG_ON(!list_empty(&port->phy_list)); | |
1021 | ||
1022 | error = device_add(&port->dev); | |
1023 | ||
1024 | if (error) | |
1025 | return error; | |
1026 | ||
1027 | transport_add_device(&port->dev); | |
1028 | transport_configure_device(&port->dev); | |
1029 | ||
1030 | return 0; | |
1031 | } | |
1032 | EXPORT_SYMBOL(sas_port_add); | |
1033 | ||
1034 | /** | |
eb44820c | 1035 | * sas_port_free - free a SAS PORT |
65c92b09 JB |
1036 | * @port: SAS PORT to free |
1037 | * | |
1038 | * Frees the specified SAS PORT. | |
1039 | * | |
1040 | * Note: | |
1041 | * This function must only be called on a PORT that has not | |
af901ca1 | 1042 | * successfully been added using sas_port_add(). |
65c92b09 JB |
1043 | */ |
1044 | void sas_port_free(struct sas_port *port) | |
1045 | { | |
1046 | transport_destroy_device(&port->dev); | |
1047 | put_device(&port->dev); | |
1048 | } | |
1049 | EXPORT_SYMBOL(sas_port_free); | |
1050 | ||
1051 | /** | |
eb44820c | 1052 | * sas_port_delete - remove SAS PORT |
65c92b09 JB |
1053 | * @port: SAS PORT to remove |
1054 | * | |
1055 | * Removes the specified SAS PORT. If the SAS PORT has an | |
1056 | * associated phys, unlink them from the port as well. | |
1057 | */ | |
1058 | void sas_port_delete(struct sas_port *port) | |
1059 | { | |
1060 | struct device *dev = &port->dev; | |
1061 | struct sas_phy *phy, *tmp_phy; | |
1062 | ||
1063 | if (port->rphy) { | |
1064 | sas_rphy_delete(port->rphy); | |
1065 | port->rphy = NULL; | |
1066 | } | |
1067 | ||
1068 | mutex_lock(&port->phy_list_mutex); | |
1069 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
1070 | port_siblings) { | |
1071 | sas_port_delete_link(port, phy); | |
1072 | list_del_init(&phy->port_siblings); | |
1073 | } | |
1074 | mutex_unlock(&port->phy_list_mutex); | |
1075 | ||
a0e1b6ef JB |
1076 | if (port->is_backlink) { |
1077 | struct device *parent = port->dev.parent; | |
1078 | ||
71610f55 | 1079 | sysfs_remove_link(&port->dev.kobj, dev_name(parent)); |
a0e1b6ef JB |
1080 | port->is_backlink = 0; |
1081 | } | |
1082 | ||
65c92b09 JB |
1083 | transport_remove_device(dev); |
1084 | device_del(dev); | |
1085 | transport_destroy_device(dev); | |
1086 | put_device(dev); | |
1087 | } | |
1088 | EXPORT_SYMBOL(sas_port_delete); | |
1089 | ||
1090 | /** | |
eb44820c | 1091 | * scsi_is_sas_port - check if a struct device represents a SAS port |
65c92b09 JB |
1092 | * @dev: device to check |
1093 | * | |
1094 | * Returns: | |
1095 | * %1 if the device represents a SAS Port, %0 else | |
1096 | */ | |
1097 | int scsi_is_sas_port(const struct device *dev) | |
1098 | { | |
1099 | return dev->release == sas_port_release; | |
1100 | } | |
1101 | EXPORT_SYMBOL(scsi_is_sas_port); | |
1102 | ||
f41a0c44 DW |
1103 | /** |
1104 | * sas_port_get_phy - try to take a reference on a port member | |
1105 | * @port: port to check | |
1106 | */ | |
1107 | struct sas_phy *sas_port_get_phy(struct sas_port *port) | |
1108 | { | |
1109 | struct sas_phy *phy; | |
1110 | ||
1111 | mutex_lock(&port->phy_list_mutex); | |
1112 | if (list_empty(&port->phy_list)) | |
1113 | phy = NULL; | |
1114 | else { | |
1115 | struct list_head *ent = port->phy_list.next; | |
1116 | ||
1117 | phy = list_entry(ent, typeof(*phy), port_siblings); | |
1118 | get_device(&phy->dev); | |
1119 | } | |
1120 | mutex_unlock(&port->phy_list_mutex); | |
1121 | ||
1122 | return phy; | |
1123 | } | |
1124 | EXPORT_SYMBOL(sas_port_get_phy); | |
1125 | ||
65c92b09 JB |
1126 | /** |
1127 | * sas_port_add_phy - add another phy to a port to form a wide port | |
1128 | * @port: port to add the phy to | |
1129 | * @phy: phy to add | |
1130 | * | |
1131 | * When a port is initially created, it is empty (has no phys). All | |
1132 | * ports must have at least one phy to operated, and all wide ports | |
1133 | * must have at least two. The current code makes no difference | |
1134 | * between ports and wide ports, but the only object that can be | |
1135 | * connected to a remote device is a port, so ports must be formed on | |
1136 | * all devices with phys if they're connected to anything. | |
1137 | */ | |
1138 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
1139 | { | |
1140 | mutex_lock(&port->phy_list_mutex); | |
1141 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
1142 | /* make sure we're already on this port */ | |
1143 | struct sas_phy *tmp; | |
1144 | ||
1145 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
1146 | if (tmp == phy) | |
1147 | break; | |
1148 | /* If this trips, you added a phy that was already | |
1149 | * part of a different port */ | |
1150 | if (unlikely(tmp != phy)) { | |
71610f55 KS |
1151 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", |
1152 | dev_name(&phy->dev)); | |
65c92b09 JB |
1153 | BUG(); |
1154 | } | |
1155 | } else { | |
1156 | sas_port_create_link(port, phy); | |
1157 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
1158 | port->num_phys++; | |
1159 | } | |
1160 | mutex_unlock(&port->phy_list_mutex); | |
1161 | } | |
1162 | EXPORT_SYMBOL(sas_port_add_phy); | |
1163 | ||
1164 | /** | |
1165 | * sas_port_delete_phy - remove a phy from a port or wide port | |
1166 | * @port: port to remove the phy from | |
1167 | * @phy: phy to remove | |
1168 | * | |
1169 | * This operation is used for tearing down ports again. It must be | |
1170 | * done to every port or wide port before calling sas_port_delete. | |
1171 | */ | |
1172 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
1173 | { | |
1174 | mutex_lock(&port->phy_list_mutex); | |
1175 | sas_port_delete_link(port, phy); | |
1176 | list_del_init(&phy->port_siblings); | |
1177 | port->num_phys--; | |
1178 | mutex_unlock(&port->phy_list_mutex); | |
1179 | } | |
1180 | EXPORT_SYMBOL(sas_port_delete_phy); | |
1181 | ||
a0e1b6ef JB |
1182 | void sas_port_mark_backlink(struct sas_port *port) |
1183 | { | |
21434966 | 1184 | int res; |
a0e1b6ef JB |
1185 | struct device *parent = port->dev.parent->parent->parent; |
1186 | ||
1187 | if (port->is_backlink) | |
1188 | return; | |
1189 | port->is_backlink = 1; | |
21434966 | 1190 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
71610f55 | 1191 | dev_name(parent)); |
21434966 DW |
1192 | if (res) |
1193 | goto err; | |
1194 | return; | |
1195 | err: | |
1196 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
cadbd4a5 | 1197 | __func__, res); |
a0e1b6ef JB |
1198 | |
1199 | } | |
1200 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
1201 | ||
c7ebbbce CH |
1202 | /* |
1203 | * SAS remote PHY attributes. | |
1204 | */ | |
1205 | ||
1206 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
1207 | static ssize_t \ | |
ee959b00 TJ |
1208 | show_sas_rphy_##name(struct device *dev, \ |
1209 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1210 | { \ |
ee959b00 | 1211 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1212 | \ |
1213 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
1214 | } | |
1215 | ||
1216 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
1217 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1218 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1219 | show_sas_rphy_##name, NULL) |
1220 | ||
1221 | #define sas_rphy_show_protocol(field, name) \ | |
1222 | static ssize_t \ | |
ee959b00 TJ |
1223 | show_sas_rphy_##name(struct device *dev, \ |
1224 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1225 | { \ |
ee959b00 | 1226 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1227 | \ |
1228 | if (!rphy->field) \ | |
1229 | return snprintf(buf, 20, "none\n"); \ | |
1230 | return get_sas_protocol_names(rphy->field, buf); \ | |
1231 | } | |
1232 | ||
1233 | #define sas_rphy_protocol_attr(field, name) \ | |
1234 | sas_rphy_show_protocol(field, name) \ | |
ee959b00 | 1235 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1236 | show_sas_rphy_##name, NULL) |
1237 | ||
1238 | static ssize_t | |
ee959b00 TJ |
1239 | show_sas_rphy_device_type(struct device *dev, |
1240 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 1241 | { |
ee959b00 | 1242 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
c7ebbbce CH |
1243 | |
1244 | if (!rphy->identify.device_type) | |
1245 | return snprintf(buf, 20, "none\n"); | |
1246 | return get_sas_device_type_names( | |
1247 | rphy->identify.device_type, buf); | |
1248 | } | |
1249 | ||
ee959b00 | 1250 | static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO, |
c7ebbbce CH |
1251 | show_sas_rphy_device_type, NULL); |
1252 | ||
a0125641 | 1253 | static ssize_t |
ee959b00 TJ |
1254 | show_sas_rphy_enclosure_identifier(struct device *dev, |
1255 | struct device_attribute *attr, char *buf) | |
a0125641 | 1256 | { |
ee959b00 | 1257 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1258 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1259 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1260 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1261 | u64 identifier; | |
1262 | int error; | |
1263 | ||
a0125641 CH |
1264 | error = i->f->get_enclosure_identifier(rphy, &identifier); |
1265 | if (error) | |
1266 | return error; | |
1267 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
1268 | } | |
1269 | ||
ee959b00 | 1270 | static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, |
a0125641 CH |
1271 | show_sas_rphy_enclosure_identifier, NULL); |
1272 | ||
1273 | static ssize_t | |
ee959b00 TJ |
1274 | show_sas_rphy_bay_identifier(struct device *dev, |
1275 | struct device_attribute *attr, char *buf) | |
a0125641 | 1276 | { |
ee959b00 | 1277 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1278 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1279 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1280 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1281 | int val; | |
1282 | ||
a0125641 CH |
1283 | val = i->f->get_bay_identifier(rphy); |
1284 | if (val < 0) | |
1285 | return val; | |
1286 | return sprintf(buf, "%d\n", val); | |
1287 | } | |
1288 | ||
ee959b00 | 1289 | static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, |
a0125641 CH |
1290 | show_sas_rphy_bay_identifier, NULL); |
1291 | ||
c7ebbbce CH |
1292 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
1293 | initiator_port_protocols); | |
1294 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
1295 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
1296 | unsigned long long); | |
1297 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
cdc43ae3 | 1298 | sas_rphy_simple_attr(scsi_target_id, scsi_target_id, "%d\n", u32); |
c7ebbbce | 1299 | |
42ab0360 JB |
1300 | /* only need 8 bytes of data plus header (4 or 8) */ |
1301 | #define BUF_SIZE 64 | |
1302 | ||
1303 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1304 | { | |
1305 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
0f88009d | 1306 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); |
42ab0360 JB |
1307 | struct scsi_mode_data mode_data; |
1308 | int res, error; | |
1309 | ||
42ab0360 JB |
1310 | if (!buffer) |
1311 | return -ENOMEM; | |
1312 | ||
1313 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1314 | &mode_data, NULL); | |
1315 | ||
1316 | error = -EINVAL; | |
1317 | if (!scsi_status_is_good(res)) | |
1318 | goto out; | |
1319 | ||
1320 | msdata = buffer + mode_data.header_length + | |
1321 | mode_data.block_descriptor_length; | |
1322 | ||
1323 | if (msdata - buffer > BUF_SIZE - 8) | |
1324 | goto out; | |
1325 | ||
1326 | error = 0; | |
1327 | ||
1328 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1329 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1330 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1331 | ||
1332 | out: | |
1333 | kfree(buffer); | |
1334 | return error; | |
1335 | } | |
1336 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1337 | ||
79cb1819 JB |
1338 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1339 | "sas_end_device", NULL, NULL, NULL); | |
1340 | ||
42ab0360 JB |
1341 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1342 | static ssize_t \ | |
ee959b00 TJ |
1343 | show_sas_end_dev_##name(struct device *dev, \ |
1344 | struct device_attribute *attr, char *buf) \ | |
42ab0360 | 1345 | { \ |
ee959b00 | 1346 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
42ab0360 JB |
1347 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ |
1348 | \ | |
1349 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1350 | } | |
1351 | ||
1352 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1353 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1354 | static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ |
42ab0360 JB |
1355 | show_sas_end_dev_##name, NULL) |
1356 | ||
1357 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1358 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1359 | "%d\n", int); | |
1360 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1361 | "%d\n", int); | |
0f88009d JB |
1362 | sas_end_dev_simple_attr(tlr_supported, tlr_supported, |
1363 | "%d\n", int); | |
1364 | sas_end_dev_simple_attr(tlr_enabled, tlr_enabled, | |
1365 | "%d\n", int); | |
42ab0360 | 1366 | |
79cb1819 JB |
1367 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1368 | "sas_expander", NULL, NULL, NULL); | |
1369 | ||
1370 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1371 | static ssize_t \ | |
ee959b00 TJ |
1372 | show_sas_expander_##name(struct device *dev, \ |
1373 | struct device_attribute *attr, char *buf) \ | |
79cb1819 | 1374 | { \ |
ee959b00 | 1375 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
79cb1819 JB |
1376 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ |
1377 | \ | |
1378 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1379 | } | |
1380 | ||
1381 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1382 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1383 | static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \ |
79cb1819 JB |
1384 | show_sas_expander_##name, NULL) |
1385 | ||
1386 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1387 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1388 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1389 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1390 | "%s\n", char *); | |
1391 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1392 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1393 | unsigned int); | |
1394 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1395 | |
c7ebbbce | 1396 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1397 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1398 | |
1399 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1400 | { | |
1401 | struct Scsi_Host *shost; | |
1402 | struct sas_internal *i; | |
1403 | ||
1404 | if (!scsi_is_sas_rphy(dev)) | |
1405 | return 0; | |
1406 | shost = dev_to_shost(dev->parent->parent); | |
1407 | ||
1408 | if (!shost->transportt) | |
1409 | return 0; | |
1410 | if (shost->transportt->host_attrs.ac.class != | |
1411 | &sas_host_class.class) | |
1412 | return 0; | |
1413 | ||
1414 | i = to_sas_internal(shost->transportt); | |
1415 | return &i->rphy_attr_cont.ac == cont; | |
1416 | } | |
1417 | ||
42ab0360 JB |
1418 | static int sas_end_dev_match(struct attribute_container *cont, |
1419 | struct device *dev) | |
1420 | { | |
1421 | struct Scsi_Host *shost; | |
1422 | struct sas_internal *i; | |
1423 | struct sas_rphy *rphy; | |
1424 | ||
1425 | if (!scsi_is_sas_rphy(dev)) | |
1426 | return 0; | |
1427 | shost = dev_to_shost(dev->parent->parent); | |
1428 | rphy = dev_to_rphy(dev); | |
1429 | ||
1430 | if (!shost->transportt) | |
1431 | return 0; | |
1432 | if (shost->transportt->host_attrs.ac.class != | |
1433 | &sas_host_class.class) | |
1434 | return 0; | |
1435 | ||
1436 | i = to_sas_internal(shost->transportt); | |
1437 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1438 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1439 | } |
1440 | ||
79cb1819 JB |
1441 | static int sas_expander_match(struct attribute_container *cont, |
1442 | struct device *dev) | |
1443 | { | |
1444 | struct Scsi_Host *shost; | |
1445 | struct sas_internal *i; | |
1446 | struct sas_rphy *rphy; | |
1447 | ||
1448 | if (!scsi_is_sas_rphy(dev)) | |
1449 | return 0; | |
1450 | shost = dev_to_shost(dev->parent->parent); | |
1451 | rphy = dev_to_rphy(dev); | |
1452 | ||
1453 | if (!shost->transportt) | |
1454 | return 0; | |
1455 | if (shost->transportt->host_attrs.ac.class != | |
1456 | &sas_host_class.class) | |
1457 | return 0; | |
1458 | ||
1459 | i = to_sas_internal(shost->transportt); | |
1460 | return &i->expander_attr_cont.ac == cont && | |
1461 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1462 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1463 | } |
1464 | ||
2f8600df | 1465 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1466 | { |
1467 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1468 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce | 1469 | |
93c20a59 FT |
1470 | if (rphy->q) |
1471 | blk_cleanup_queue(rphy->q); | |
1472 | ||
c7ebbbce | 1473 | put_device(dev->parent); |
2f8600df | 1474 | kfree(edev); |
c7ebbbce CH |
1475 | } |
1476 | ||
2f8600df | 1477 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1478 | { |
2f8600df JB |
1479 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1480 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1481 | |
93c20a59 FT |
1482 | if (rphy->q) |
1483 | blk_cleanup_queue(rphy->q); | |
1484 | ||
2f8600df JB |
1485 | put_device(dev->parent); |
1486 | kfree(edev); | |
c7ebbbce | 1487 | } |
c7ebbbce | 1488 | |
c5943d36 | 1489 | /** |
183b8021 | 1490 | * sas_rphy_initialize - common rphy initialization |
c5943d36 JB |
1491 | * @rphy: rphy to initialise |
1492 | * | |
1493 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1494 | * initialise the common rphy component of each. | |
1495 | */ | |
1496 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1497 | { | |
1498 | INIT_LIST_HEAD(&rphy->list); | |
1499 | } | |
1500 | ||
42ab0360 JB |
1501 | /** |
1502 | * sas_end_device_alloc - allocate an rphy for an end device | |
eb44820c | 1503 | * @parent: which port |
42ab0360 JB |
1504 | * |
1505 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1506 | * | |
1507 | * Returns: | |
1508 | * SAS PHY allocated or %NULL if the allocation failed. | |
1509 | */ | |
65c92b09 | 1510 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1511 | { |
1512 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1513 | struct sas_end_device *rdev; | |
1514 | ||
1515 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1516 | if (!rdev) { | |
42ab0360 JB |
1517 | return NULL; |
1518 | } | |
1519 | ||
1520 | device_initialize(&rdev->rphy.dev); | |
1521 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1522 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1523 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1524 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
71610f55 KS |
1525 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d", |
1526 | shost->host_no, rphy->scsi_target_id, | |
1527 | parent->port_identifier); | |
65c92b09 | 1528 | } else |
71610f55 KS |
1529 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d", |
1530 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1531 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1532 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1533 | transport_setup_device(&rdev->rphy.dev); |
1534 | ||
1535 | return &rdev->rphy; | |
1536 | } | |
1537 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1538 | ||
79cb1819 JB |
1539 | /** |
1540 | * sas_expander_alloc - allocate an rphy for an end device | |
eb44820c RL |
1541 | * @parent: which port |
1542 | * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE | |
79cb1819 JB |
1543 | * |
1544 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1545 | * | |
1546 | * Returns: | |
1547 | * SAS PHY allocated or %NULL if the allocation failed. | |
1548 | */ | |
65c92b09 | 1549 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1550 | enum sas_device_type type) |
1551 | { | |
1552 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1553 | struct sas_expander_device *rdev; | |
1554 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1555 | ||
1556 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1557 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1558 | ||
1559 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1560 | if (!rdev) { | |
79cb1819 JB |
1561 | return NULL; |
1562 | } | |
1563 | ||
1564 | device_initialize(&rdev->rphy.dev); | |
1565 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1566 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1567 | mutex_lock(&sas_host->lock); |
1568 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1569 | mutex_unlock(&sas_host->lock); | |
71610f55 KS |
1570 | dev_set_name(&rdev->rphy.dev, "expander-%d:%d", |
1571 | shost->host_no, rdev->rphy.scsi_target_id); | |
79cb1819 | 1572 | rdev->rphy.identify.device_type = type; |
c5943d36 | 1573 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1574 | transport_setup_device(&rdev->rphy.dev); |
1575 | ||
1576 | return &rdev->rphy; | |
1577 | } | |
1578 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1579 | |
c7ebbbce | 1580 | /** |
eb44820c | 1581 | * sas_rphy_add - add a SAS remote PHY to the device hierarchy |
c7ebbbce CH |
1582 | * @rphy: The remote PHY to be added |
1583 | * | |
1584 | * Publishes a SAS remote PHY to the rest of the system. | |
1585 | */ | |
1586 | int sas_rphy_add(struct sas_rphy *rphy) | |
1587 | { | |
65c92b09 | 1588 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1589 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1590 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1591 | struct sas_identify *identify = &rphy->identify; | |
1592 | int error; | |
1593 | ||
1594 | if (parent->rphy) | |
1595 | return -ENXIO; | |
1596 | parent->rphy = rphy; | |
1597 | ||
1598 | error = device_add(&rphy->dev); | |
1599 | if (error) | |
1600 | return error; | |
1601 | transport_add_device(&rphy->dev); | |
1602 | transport_configure_device(&rphy->dev); | |
39dca558 | 1603 | if (sas_bsg_initialize(shost, rphy)) |
71610f55 | 1604 | printk("fail to a bsg device %s\n", dev_name(&rphy->dev)); |
39dca558 | 1605 | |
c7ebbbce | 1606 | |
e02f3f59 | 1607 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1608 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1609 | if (identify->device_type == SAS_END_DEVICE && | |
1610 | (identify->target_port_protocols & | |
1611 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1612 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1613 | else if (identify->device_type == SAS_END_DEVICE) |
1614 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1615 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1616 | |
79cb1819 JB |
1617 | if (identify->device_type == SAS_END_DEVICE && |
1618 | rphy->scsi_target_id != -1) { | |
2fc62e2a DW |
1619 | int lun; |
1620 | ||
1621 | if (identify->target_port_protocols & SAS_PROTOCOL_SSP) | |
1622 | lun = SCAN_WILD_CARD; | |
1623 | else | |
1624 | lun = 0; | |
1625 | ||
1d645088 HR |
1626 | scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, lun, |
1627 | SCSI_SCAN_INITIAL); | |
c7ebbbce CH |
1628 | } |
1629 | ||
1630 | return 0; | |
1631 | } | |
1632 | EXPORT_SYMBOL(sas_rphy_add); | |
1633 | ||
1634 | /** | |
eb44820c RL |
1635 | * sas_rphy_free - free a SAS remote PHY |
1636 | * @rphy: SAS remote PHY to free | |
c7ebbbce CH |
1637 | * |
1638 | * Frees the specified SAS remote PHY. | |
1639 | * | |
1640 | * Note: | |
1641 | * This function must only be called on a remote | |
af901ca1 | 1642 | * PHY that has not successfully been added using |
6f63caae | 1643 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
c7ebbbce CH |
1644 | */ |
1645 | void sas_rphy_free(struct sas_rphy *rphy) | |
1646 | { | |
92aab646 | 1647 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1648 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1649 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1650 | ||
e02f3f59 | 1651 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1652 | list_del(&rphy->list); |
e02f3f59 | 1653 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1654 | |
92aab646 | 1655 | transport_destroy_device(dev); |
2f8600df | 1656 | |
92aab646 | 1657 | put_device(dev); |
c7ebbbce CH |
1658 | } |
1659 | EXPORT_SYMBOL(sas_rphy_free); | |
1660 | ||
1661 | /** | |
eb44820c | 1662 | * sas_rphy_delete - remove and free SAS remote PHY |
6f63caae | 1663 | * @rphy: SAS remote PHY to remove and free |
c7ebbbce | 1664 | * |
6f63caae | 1665 | * Removes the specified SAS remote PHY and frees it. |
c7ebbbce CH |
1666 | */ |
1667 | void | |
1668 | sas_rphy_delete(struct sas_rphy *rphy) | |
6f63caae DW |
1669 | { |
1670 | sas_rphy_remove(rphy); | |
1671 | sas_rphy_free(rphy); | |
1672 | } | |
1673 | EXPORT_SYMBOL(sas_rphy_delete); | |
1674 | ||
87c8331f DW |
1675 | /** |
1676 | * sas_rphy_unlink - unlink SAS remote PHY | |
1677 | * @rphy: SAS remote phy to unlink from its parent port | |
1678 | * | |
1679 | * Removes port reference to an rphy | |
1680 | */ | |
1681 | void sas_rphy_unlink(struct sas_rphy *rphy) | |
1682 | { | |
1683 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); | |
1684 | ||
1685 | parent->rphy = NULL; | |
1686 | } | |
1687 | EXPORT_SYMBOL(sas_rphy_unlink); | |
1688 | ||
6f63caae | 1689 | /** |
eb44820c | 1690 | * sas_rphy_remove - remove SAS remote PHY |
6f63caae DW |
1691 | * @rphy: SAS remote phy to remove |
1692 | * | |
1693 | * Removes the specified SAS remote PHY. | |
1694 | */ | |
1695 | void | |
1696 | sas_rphy_remove(struct sas_rphy *rphy) | |
c7ebbbce CH |
1697 | { |
1698 | struct device *dev = &rphy->dev; | |
c7ebbbce | 1699 | |
d4054239 CH |
1700 | switch (rphy->identify.device_type) { |
1701 | case SAS_END_DEVICE: | |
1702 | scsi_remove_target(dev); | |
1703 | break; | |
1704 | case SAS_EDGE_EXPANDER_DEVICE: | |
1705 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1706 | sas_remove_children(dev); |
d4054239 CH |
1707 | break; |
1708 | default: | |
1709 | break; | |
1710 | } | |
c7ebbbce | 1711 | |
87c8331f | 1712 | sas_rphy_unlink(rphy); |
6aa6caff | 1713 | sas_bsg_remove(NULL, rphy); |
fe8b2304 CH |
1714 | transport_remove_device(dev); |
1715 | device_del(dev); | |
c7ebbbce | 1716 | } |
6f63caae | 1717 | EXPORT_SYMBOL(sas_rphy_remove); |
c7ebbbce CH |
1718 | |
1719 | /** | |
eb44820c | 1720 | * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY |
c7ebbbce CH |
1721 | * @dev: device to check |
1722 | * | |
1723 | * Returns: | |
1724 | * %1 if the device represents a SAS remote PHY, %0 else | |
1725 | */ | |
1726 | int scsi_is_sas_rphy(const struct device *dev) | |
1727 | { | |
2f8600df JB |
1728 | return dev->release == sas_end_device_release || |
1729 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1730 | } |
1731 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1732 | ||
1733 | ||
1734 | /* | |
1735 | * SCSI scan helper | |
1736 | */ | |
1737 | ||
e02f3f59 | 1738 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
9cb78c16 | 1739 | uint id, u64 lun) |
c7ebbbce CH |
1740 | { |
1741 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1742 | struct sas_rphy *rphy; | |
c7ebbbce | 1743 | |
e02f3f59 | 1744 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1745 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1746 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1747 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1748 | continue; |
1749 | ||
e8bf3941 | 1750 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1751 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
1d645088 HR |
1752 | scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, |
1753 | lun, SCSI_SCAN_MANUAL); | |
e02f3f59 | 1754 | } |
c7ebbbce | 1755 | } |
e02f3f59 | 1756 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1757 | |
e02f3f59 | 1758 | return 0; |
c7ebbbce CH |
1759 | } |
1760 | ||
1761 | ||
1762 | /* | |
1763 | * Setup / Teardown code | |
1764 | */ | |
1765 | ||
d24e1eeb | 1766 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
ee959b00 | 1767 | i->private_##attrb[count] = dev_attr_##field; \ |
42ab0360 | 1768 | i->private_##attrb[count].attr.mode = perm; \ |
42ab0360 JB |
1769 | i->attrb[count] = &i->private_##attrb[count]; \ |
1770 | if (test) \ | |
1771 | count++ | |
1772 | ||
d24e1eeb | 1773 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
ee959b00 | 1774 | i->private_##attrb[count] = dev_attr_##field; \ |
d24e1eeb JB |
1775 | i->private_##attrb[count].attr.mode = perm; \ |
1776 | if (ro_test) { \ | |
1777 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1778 | i->private_##attrb[count].store = NULL; \ | |
1779 | } \ | |
1780 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1781 | if (test) \ | |
1782 | count++ | |
42ab0360 JB |
1783 | |
1784 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1785 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1786 | |
dd9fbb52 | 1787 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1788 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1789 | |
65c92b09 | 1790 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1791 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1792 | |
d24e1eeb JB |
1793 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1794 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1795 | !i->f->set_phy_speed, S_IRUGO) | |
1796 | ||
acbf167d DW |
1797 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
1798 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1799 | !i->f->func, S_IRUGO) | |
1800 | ||
65c92b09 JB |
1801 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1802 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1803 | ||
1804 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1805 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1806 | |
65c92b09 | 1807 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
fe3b5bfe | 1808 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
07ba3a95 | 1809 | |
65c92b09 | 1810 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
fe3b5bfe | 1811 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
dd9fbb52 | 1812 | |
42ab0360 JB |
1813 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1814 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1815 | |
79cb1819 JB |
1816 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1817 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1818 | ||
c7ebbbce | 1819 | /** |
eb44820c | 1820 | * sas_attach_transport - instantiate SAS transport template |
c7ebbbce CH |
1821 | * @ft: SAS transport class function template |
1822 | */ | |
1823 | struct scsi_transport_template * | |
1824 | sas_attach_transport(struct sas_function_template *ft) | |
1825 | { | |
1826 | struct sas_internal *i; | |
1827 | int count; | |
1828 | ||
24669f75 | 1829 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1830 | if (!i) |
1831 | return NULL; | |
c7ebbbce | 1832 | |
e02f3f59 | 1833 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1834 | |
1835 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1836 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1837 | i->t.host_attrs.ac.match = sas_host_match; | |
1838 | transport_container_register(&i->t.host_attrs); | |
1839 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1840 | ||
1841 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1842 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1843 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1844 | transport_container_register(&i->phy_attr_cont); | |
1845 | ||
65c92b09 JB |
1846 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1847 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1848 | i->port_attr_cont.ac.match = sas_port_match; | |
1849 | transport_container_register(&i->port_attr_cont); | |
1850 | ||
c7ebbbce CH |
1851 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1852 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1853 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1854 | transport_container_register(&i->rphy_attr_cont); | |
1855 | ||
42ab0360 JB |
1856 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1857 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1858 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1859 | transport_container_register(&i->end_dev_attr_cont); | |
1860 | ||
79cb1819 JB |
1861 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1862 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1863 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1864 | transport_container_register(&i->expander_attr_cont); | |
1865 | ||
c7ebbbce CH |
1866 | i->f = ft; |
1867 | ||
c7ebbbce | 1868 | count = 0; |
65c92b09 JB |
1869 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1870 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1871 | SETUP_PHY_ATTRIBUTE(device_type); | |
1872 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1873 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1874 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1875 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1876 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1877 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1878 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1879 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1880 | |
1881 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1882 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1883 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1884 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1885 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1886 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1887 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1888 | i->phy_attrs[count] = NULL; |
1889 | ||
65c92b09 JB |
1890 | count = 0; |
1891 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1892 | i->port_attrs[count] = NULL; | |
1893 | ||
c7ebbbce CH |
1894 | count = 0; |
1895 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1896 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1897 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1898 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1899 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
cdc43ae3 | 1900 | SETUP_RPORT_ATTRIBUTE(rphy_scsi_target_id); |
dd9fbb52 JB |
1901 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1902 | get_enclosure_identifier); | |
1903 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1904 | get_bay_identifier); | |
c7ebbbce CH |
1905 | i->rphy_attrs[count] = NULL; |
1906 | ||
42ab0360 JB |
1907 | count = 0; |
1908 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1909 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1910 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
0f88009d JB |
1911 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_supported); |
1912 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_enabled); | |
42ab0360 JB |
1913 | i->end_dev_attrs[count] = NULL; |
1914 | ||
79cb1819 JB |
1915 | count = 0; |
1916 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1917 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1918 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1919 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1920 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1921 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1922 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1923 | i->expander_attrs[count] = NULL; | |
1924 | ||
c7ebbbce CH |
1925 | return &i->t; |
1926 | } | |
1927 | EXPORT_SYMBOL(sas_attach_transport); | |
1928 | ||
1929 | /** | |
eb44820c | 1930 | * sas_release_transport - release SAS transport template instance |
c7ebbbce CH |
1931 | * @t: transport template instance |
1932 | */ | |
1933 | void sas_release_transport(struct scsi_transport_template *t) | |
1934 | { | |
1935 | struct sas_internal *i = to_sas_internal(t); | |
1936 | ||
1937 | transport_container_unregister(&i->t.host_attrs); | |
1938 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1939 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1940 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1941 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1942 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1943 | |
1944 | kfree(i); | |
1945 | } | |
1946 | EXPORT_SYMBOL(sas_release_transport); | |
1947 | ||
1948 | static __init int sas_transport_init(void) | |
1949 | { | |
1950 | int error; | |
1951 | ||
1952 | error = transport_class_register(&sas_host_class); | |
1953 | if (error) | |
1954 | goto out; | |
1955 | error = transport_class_register(&sas_phy_class); | |
1956 | if (error) | |
1957 | goto out_unregister_transport; | |
65c92b09 | 1958 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1959 | if (error) |
1960 | goto out_unregister_phy; | |
65c92b09 JB |
1961 | error = transport_class_register(&sas_rphy_class); |
1962 | if (error) | |
1963 | goto out_unregister_port; | |
42ab0360 JB |
1964 | error = transport_class_register(&sas_end_dev_class); |
1965 | if (error) | |
1966 | goto out_unregister_rphy; | |
79cb1819 JB |
1967 | error = transport_class_register(&sas_expander_class); |
1968 | if (error) | |
1969 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1970 | |
1971 | return 0; | |
1972 | ||
79cb1819 JB |
1973 | out_unregister_end_dev: |
1974 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1975 | out_unregister_rphy: |
1976 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1977 | out_unregister_port: |
1978 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1979 | out_unregister_phy: |
1980 | transport_class_unregister(&sas_phy_class); | |
1981 | out_unregister_transport: | |
1982 | transport_class_unregister(&sas_host_class); | |
1983 | out: | |
1984 | return error; | |
1985 | ||
1986 | } | |
1987 | ||
1988 | static void __exit sas_transport_exit(void) | |
1989 | { | |
1990 | transport_class_unregister(&sas_host_class); | |
1991 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1992 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1993 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1994 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1995 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1996 | } |
1997 | ||
1998 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1999 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
2000 | MODULE_LICENSE("GPL"); |
2001 | ||
2002 | module_init(sas_transport_init); | |
2003 | module_exit(sas_transport_exit); |