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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> |
c7ebbbce CH |
36 | #include <scsi/scsi_device.h> |
37 | #include <scsi/scsi_host.h> | |
38 | #include <scsi/scsi_transport.h> | |
39 | #include <scsi/scsi_transport_sas.h> | |
40 | ||
d6159c17 | 41 | #include "scsi_sas_internal.h" |
c7ebbbce CH |
42 | struct sas_host_attrs { |
43 | struct list_head rphy_list; | |
e02f3f59 | 44 | struct mutex lock; |
b6aff669 | 45 | struct request_queue *q; |
c7ebbbce | 46 | u32 next_target_id; |
79cb1819 | 47 | u32 next_expander_id; |
c9fefeb2 | 48 | int next_port_id; |
c7ebbbce CH |
49 | }; |
50 | #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) | |
51 | ||
52 | ||
53 | /* | |
54 | * Hack to allow attributes of the same name in different objects. | |
55 | */ | |
ee959b00 TJ |
56 | #define SAS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
57 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
c7ebbbce CH |
58 | __ATTR(_name,_mode,_show,_store) |
59 | ||
60 | ||
61 | /* | |
62 | * Pretty printing helpers | |
63 | */ | |
64 | ||
65 | #define sas_bitfield_name_match(title, table) \ | |
66 | static ssize_t \ | |
67 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
68 | { \ | |
69 | char *prefix = ""; \ | |
70 | ssize_t len = 0; \ | |
71 | int i; \ | |
72 | \ | |
6391a113 | 73 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
74 | if (table[i].value & table_key) { \ |
75 | len += sprintf(buf + len, "%s%s", \ | |
76 | prefix, table[i].name); \ | |
77 | prefix = ", "; \ | |
78 | } \ | |
79 | } \ | |
80 | len += sprintf(buf + len, "\n"); \ | |
81 | return len; \ | |
82 | } | |
83 | ||
d24e1eeb JB |
84 | #define sas_bitfield_name_set(title, table) \ |
85 | static ssize_t \ | |
86 | set_sas_##title##_names(u32 *table_key, const char *buf) \ | |
87 | { \ | |
88 | ssize_t len = 0; \ | |
89 | int i; \ | |
90 | \ | |
91 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ | |
92 | len = strlen(table[i].name); \ | |
93 | if (strncmp(buf, table[i].name, len) == 0 && \ | |
94 | (buf[len] == '\n' || buf[len] == '\0')) { \ | |
95 | *table_key = table[i].value; \ | |
96 | return 0; \ | |
97 | } \ | |
98 | } \ | |
99 | return -EINVAL; \ | |
100 | } | |
101 | ||
c7ebbbce CH |
102 | #define sas_bitfield_name_search(title, table) \ |
103 | static ssize_t \ | |
104 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
105 | { \ | |
106 | ssize_t len = 0; \ | |
107 | int i; \ | |
108 | \ | |
6391a113 | 109 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
110 | if (table[i].value == table_key) { \ |
111 | len += sprintf(buf + len, "%s", \ | |
112 | table[i].name); \ | |
113 | break; \ | |
114 | } \ | |
115 | } \ | |
116 | len += sprintf(buf + len, "\n"); \ | |
117 | return len; \ | |
118 | } | |
119 | ||
120 | static struct { | |
121 | u32 value; | |
122 | char *name; | |
123 | } sas_device_type_names[] = { | |
124 | { SAS_PHY_UNUSED, "unused" }, | |
125 | { SAS_END_DEVICE, "end device" }, | |
126 | { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, | |
127 | { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, | |
128 | }; | |
129 | sas_bitfield_name_search(device_type, sas_device_type_names) | |
130 | ||
131 | ||
132 | static struct { | |
133 | u32 value; | |
134 | char *name; | |
135 | } sas_protocol_names[] = { | |
136 | { SAS_PROTOCOL_SATA, "sata" }, | |
137 | { SAS_PROTOCOL_SMP, "smp" }, | |
138 | { SAS_PROTOCOL_STP, "stp" }, | |
139 | { SAS_PROTOCOL_SSP, "ssp" }, | |
140 | }; | |
141 | sas_bitfield_name_match(protocol, sas_protocol_names) | |
142 | ||
143 | static struct { | |
144 | u32 value; | |
145 | char *name; | |
146 | } sas_linkspeed_names[] = { | |
147 | { SAS_LINK_RATE_UNKNOWN, "Unknown" }, | |
148 | { SAS_PHY_DISABLED, "Phy disabled" }, | |
149 | { SAS_LINK_RATE_FAILED, "Link Rate failed" }, | |
150 | { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, | |
151 | { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, | |
152 | { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, | |
7e6dff62 | 153 | { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, |
d84fd392 | 154 | { SAS_LINK_RATE_12_0_GBPS, "12.0 Gbit" }, |
c7ebbbce CH |
155 | }; |
156 | sas_bitfield_name_search(linkspeed, sas_linkspeed_names) | |
d24e1eeb | 157 | sas_bitfield_name_set(linkspeed, sas_linkspeed_names) |
c7ebbbce | 158 | |
0f88009d JB |
159 | static struct sas_end_device *sas_sdev_to_rdev(struct scsi_device *sdev) |
160 | { | |
161 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
162 | struct sas_end_device *rdev; | |
163 | ||
164 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
165 | ||
166 | rdev = rphy_to_end_device(rphy); | |
167 | return rdev; | |
168 | } | |
169 | ||
7aa68e80 FT |
170 | static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost, |
171 | struct sas_rphy *rphy) | |
172 | { | |
173 | struct request *req; | |
174 | int ret; | |
175 | int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); | |
176 | ||
7eaceacc | 177 | while ((req = blk_fetch_request(q)) != NULL) { |
7aa68e80 FT |
178 | spin_unlock_irq(q->queue_lock); |
179 | ||
180 | handler = to_sas_internal(shost->transportt)->f->smp_handler; | |
181 | ret = handler(shost, rphy, req); | |
2d507a01 | 182 | req->errors = ret; |
7aa68e80 | 183 | |
93bdcba5 | 184 | blk_end_request_all(req, ret); |
7aa68e80 | 185 | |
93bdcba5 | 186 | spin_lock_irq(q->queue_lock); |
7aa68e80 FT |
187 | } |
188 | } | |
189 | ||
190 | static void sas_host_smp_request(struct request_queue *q) | |
191 | { | |
192 | sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); | |
193 | } | |
194 | ||
195 | static void sas_non_host_smp_request(struct request_queue *q) | |
196 | { | |
197 | struct sas_rphy *rphy = q->queuedata; | |
198 | sas_smp_request(q, rphy_to_shost(rphy), rphy); | |
199 | } | |
200 | ||
93c20a59 FT |
201 | static void sas_host_release(struct device *dev) |
202 | { | |
203 | struct Scsi_Host *shost = dev_to_shost(dev); | |
204 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
205 | struct request_queue *q = sas_host->q; | |
206 | ||
207 | if (q) | |
208 | blk_cleanup_queue(q); | |
209 | } | |
210 | ||
39dca558 | 211 | static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) |
7aa68e80 FT |
212 | { |
213 | struct request_queue *q; | |
214 | int error; | |
39dca558 | 215 | struct device *dev; |
71610f55 | 216 | char namebuf[20]; |
39dca558 | 217 | const char *name; |
93c20a59 | 218 | void (*release)(struct device *); |
7aa68e80 FT |
219 | |
220 | if (!to_sas_internal(shost->transportt)->f->smp_handler) { | |
221 | printk("%s can't handle SMP requests\n", shost->hostt->name); | |
222 | return 0; | |
223 | } | |
224 | ||
39dca558 | 225 | if (rphy) { |
7aa68e80 | 226 | q = blk_init_queue(sas_non_host_smp_request, NULL); |
39dca558 | 227 | dev = &rphy->dev; |
71610f55 | 228 | name = dev_name(dev); |
93c20a59 | 229 | release = NULL; |
39dca558 | 230 | } else { |
7aa68e80 | 231 | q = blk_init_queue(sas_host_smp_request, NULL); |
39dca558 JB |
232 | dev = &shost->shost_gendev; |
233 | snprintf(namebuf, sizeof(namebuf), | |
234 | "sas_host%d", shost->host_no); | |
235 | name = namebuf; | |
93c20a59 | 236 | release = sas_host_release; |
39dca558 | 237 | } |
7aa68e80 FT |
238 | if (!q) |
239 | return -ENOMEM; | |
240 | ||
93c20a59 | 241 | error = bsg_register_queue(q, dev, name, release); |
7aa68e80 FT |
242 | if (error) { |
243 | blk_cleanup_queue(q); | |
244 | return -ENOMEM; | |
245 | } | |
246 | ||
b6aff669 JB |
247 | if (rphy) |
248 | rphy->q = q; | |
249 | else | |
250 | to_sas_host_attrs(shost)->q = q; | |
251 | ||
7aa68e80 FT |
252 | if (rphy) |
253 | q->queuedata = rphy; | |
254 | else | |
255 | q->queuedata = shost; | |
256 | ||
75ad23bc | 257 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); |
7aa68e80 FT |
258 | return 0; |
259 | } | |
260 | ||
b6aff669 JB |
261 | static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy) |
262 | { | |
263 | struct request_queue *q; | |
264 | ||
265 | if (rphy) | |
266 | q = rphy->q; | |
267 | else | |
268 | q = to_sas_host_attrs(shost)->q; | |
269 | ||
270 | if (!q) | |
271 | return; | |
272 | ||
273 | bsg_unregister_queue(q); | |
b6aff669 JB |
274 | } |
275 | ||
c7ebbbce CH |
276 | /* |
277 | * SAS host attributes | |
278 | */ | |
279 | ||
37be6eeb | 280 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 281 | struct device *cdev) |
c7ebbbce CH |
282 | { |
283 | struct Scsi_Host *shost = dev_to_shost(dev); | |
284 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
285 | ||
286 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 287 | mutex_init(&sas_host->lock); |
c7ebbbce | 288 | sas_host->next_target_id = 0; |
79cb1819 | 289 | sas_host->next_expander_id = 0; |
c9fefeb2 | 290 | sas_host->next_port_id = 0; |
7aa68e80 | 291 | |
39dca558 | 292 | if (sas_bsg_initialize(shost, NULL)) |
7aa68e80 FT |
293 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", |
294 | shost->host_no); | |
295 | ||
c7ebbbce CH |
296 | return 0; |
297 | } | |
298 | ||
b6aff669 | 299 | static int sas_host_remove(struct transport_container *tc, struct device *dev, |
ee959b00 | 300 | struct device *cdev) |
b6aff669 JB |
301 | { |
302 | struct Scsi_Host *shost = dev_to_shost(dev); | |
303 | ||
304 | sas_bsg_remove(shost, NULL); | |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
c7ebbbce | 309 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
b6aff669 | 310 | "sas_host", sas_host_setup, sas_host_remove, NULL); |
c7ebbbce CH |
311 | |
312 | static int sas_host_match(struct attribute_container *cont, | |
313 | struct device *dev) | |
314 | { | |
315 | struct Scsi_Host *shost; | |
316 | struct sas_internal *i; | |
317 | ||
318 | if (!scsi_is_host_device(dev)) | |
319 | return 0; | |
320 | shost = dev_to_shost(dev); | |
321 | ||
322 | if (!shost->transportt) | |
323 | return 0; | |
324 | if (shost->transportt->host_attrs.ac.class != | |
325 | &sas_host_class.class) | |
326 | return 0; | |
327 | ||
328 | i = to_sas_internal(shost->transportt); | |
329 | return &i->t.host_attrs.ac == cont; | |
330 | } | |
331 | ||
332 | static int do_sas_phy_delete(struct device *dev, void *data) | |
333 | { | |
65c92b09 JB |
334 | int pass = (int)(unsigned long)data; |
335 | ||
336 | if (pass == 0 && scsi_is_sas_port(dev)) | |
337 | sas_port_delete(dev_to_sas_port(dev)); | |
338 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
339 | sas_phy_delete(dev_to_phy(dev)); |
340 | return 0; | |
341 | } | |
342 | ||
3b91d09c JB |
343 | /** |
344 | * is_sas_attached - check if device is SAS attached | |
345 | * @sdev: scsi device to check | |
346 | * | |
347 | * returns true if the device is SAS attached | |
348 | */ | |
349 | int is_sas_attached(struct scsi_device *sdev) | |
350 | { | |
351 | struct Scsi_Host *shost = sdev->host; | |
352 | ||
353 | return shost->transportt->host_attrs.ac.class == | |
354 | &sas_host_class.class; | |
355 | } | |
356 | EXPORT_SYMBOL(is_sas_attached); | |
357 | ||
358 | ||
65c92b09 | 359 | /** |
eb44820c | 360 | * sas_remove_children - tear down a devices SAS data structures |
65c92b09 JB |
361 | * @dev: device belonging to the sas object |
362 | * | |
363 | * Removes all SAS PHYs and remote PHYs for a given object | |
364 | */ | |
365 | void sas_remove_children(struct device *dev) | |
366 | { | |
367 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
368 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
369 | } | |
370 | EXPORT_SYMBOL(sas_remove_children); | |
371 | ||
c7ebbbce | 372 | /** |
eb44820c | 373 | * sas_remove_host - tear down a Scsi_Host's SAS data structures |
c7ebbbce CH |
374 | * @shost: Scsi Host that is torn down |
375 | * | |
376 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. | |
377 | * Must be called just before scsi_remove_host for SAS HBAs. | |
378 | */ | |
379 | void sas_remove_host(struct Scsi_Host *shost) | |
380 | { | |
65c92b09 | 381 | sas_remove_children(&shost->shost_gendev); |
c7ebbbce CH |
382 | } |
383 | EXPORT_SYMBOL(sas_remove_host); | |
384 | ||
0f88009d JB |
385 | /** |
386 | * sas_tlr_supported - checking TLR bit in vpd 0x90 | |
387 | * @sdev: scsi device struct | |
388 | * | |
389 | * Check Transport Layer Retries are supported or not. | |
390 | * If vpd page 0x90 is present, TRL is supported. | |
391 | * | |
392 | */ | |
393 | unsigned int | |
394 | sas_tlr_supported(struct scsi_device *sdev) | |
395 | { | |
396 | const int vpd_len = 32; | |
397 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
398 | char *buffer = kzalloc(vpd_len, GFP_KERNEL); | |
399 | int ret = 0; | |
400 | ||
401 | if (scsi_get_vpd_page(sdev, 0x90, buffer, vpd_len)) | |
402 | goto out; | |
403 | ||
404 | /* | |
405 | * Magic numbers: the VPD Protocol page (0x90) | |
406 | * has a 4 byte header and then one entry per device port | |
407 | * the TLR bit is at offset 8 on each port entry | |
408 | * if we take the first port, that's at total offset 12 | |
409 | */ | |
410 | ret = buffer[12] & 0x01; | |
411 | ||
412 | out: | |
413 | kfree(buffer); | |
414 | rdev->tlr_supported = ret; | |
415 | return ret; | |
416 | ||
417 | } | |
418 | EXPORT_SYMBOL_GPL(sas_tlr_supported); | |
419 | ||
420 | /** | |
421 | * sas_disable_tlr - setting TLR flags | |
422 | * @sdev: scsi device struct | |
423 | * | |
424 | * Seting tlr_enabled flag to 0. | |
425 | * | |
426 | */ | |
427 | void | |
428 | sas_disable_tlr(struct scsi_device *sdev) | |
429 | { | |
430 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
431 | ||
432 | rdev->tlr_enabled = 0; | |
433 | } | |
434 | EXPORT_SYMBOL_GPL(sas_disable_tlr); | |
435 | ||
436 | /** | |
437 | * sas_enable_tlr - setting TLR flags | |
438 | * @sdev: scsi device struct | |
439 | * | |
440 | * Seting tlr_enabled flag 1. | |
441 | * | |
442 | */ | |
443 | void sas_enable_tlr(struct scsi_device *sdev) | |
444 | { | |
445 | unsigned int tlr_supported = 0; | |
446 | tlr_supported = sas_tlr_supported(sdev); | |
447 | ||
448 | if (tlr_supported) { | |
449 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
450 | ||
451 | rdev->tlr_enabled = 1; | |
452 | } | |
453 | ||
454 | return; | |
455 | } | |
456 | EXPORT_SYMBOL_GPL(sas_enable_tlr); | |
457 | ||
458 | unsigned int sas_is_tlr_enabled(struct scsi_device *sdev) | |
459 | { | |
460 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
461 | return rdev->tlr_enabled; | |
462 | } | |
463 | EXPORT_SYMBOL_GPL(sas_is_tlr_enabled); | |
c7ebbbce CH |
464 | |
465 | /* | |
65c92b09 | 466 | * SAS Phy attributes |
c7ebbbce CH |
467 | */ |
468 | ||
469 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
470 | static ssize_t \ | |
ee959b00 TJ |
471 | show_sas_phy_##name(struct device *dev, \ |
472 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 473 | { \ |
ee959b00 | 474 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
475 | \ |
476 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
477 | } | |
478 | ||
479 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
480 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 481 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
482 | |
483 | #define sas_phy_show_protocol(field, name) \ | |
484 | static ssize_t \ | |
ee959b00 TJ |
485 | show_sas_phy_##name(struct device *dev, \ |
486 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 487 | { \ |
ee959b00 | 488 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
489 | \ |
490 | if (!phy->field) \ | |
491 | return snprintf(buf, 20, "none\n"); \ | |
492 | return get_sas_protocol_names(phy->field, buf); \ | |
493 | } | |
494 | ||
495 | #define sas_phy_protocol_attr(field, name) \ | |
496 | sas_phy_show_protocol(field, name) \ | |
ee959b00 | 497 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
498 | |
499 | #define sas_phy_show_linkspeed(field) \ | |
500 | static ssize_t \ | |
ee959b00 TJ |
501 | show_sas_phy_##field(struct device *dev, \ |
502 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 503 | { \ |
ee959b00 | 504 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
505 | \ |
506 | return get_sas_linkspeed_names(phy->field, buf); \ | |
507 | } | |
508 | ||
d24e1eeb JB |
509 | /* Fudge to tell if we're minimum or maximum */ |
510 | #define sas_phy_store_linkspeed(field) \ | |
511 | static ssize_t \ | |
ee959b00 TJ |
512 | store_sas_phy_##field(struct device *dev, \ |
513 | struct device_attribute *attr, \ | |
514 | const char *buf, size_t count) \ | |
d24e1eeb | 515 | { \ |
ee959b00 | 516 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
d24e1eeb JB |
517 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
518 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
519 | u32 value; \ | |
520 | struct sas_phy_linkrates rates = {0}; \ | |
521 | int error; \ | |
522 | \ | |
523 | error = set_sas_linkspeed_names(&value, buf); \ | |
524 | if (error) \ | |
525 | return error; \ | |
526 | rates.field = value; \ | |
527 | error = i->f->set_phy_speed(phy, &rates); \ | |
528 | \ | |
529 | return error ? error : count; \ | |
530 | } | |
531 | ||
532 | #define sas_phy_linkspeed_rw_attr(field) \ | |
533 | sas_phy_show_linkspeed(field) \ | |
534 | sas_phy_store_linkspeed(field) \ | |
ee959b00 | 535 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ |
d24e1eeb JB |
536 | store_sas_phy_##field) |
537 | ||
c7ebbbce CH |
538 | #define sas_phy_linkspeed_attr(field) \ |
539 | sas_phy_show_linkspeed(field) \ | |
ee959b00 | 540 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c7ebbbce | 541 | |
d24e1eeb | 542 | |
c3ee74c4 CH |
543 | #define sas_phy_show_linkerror(field) \ |
544 | static ssize_t \ | |
ee959b00 TJ |
545 | show_sas_phy_##field(struct device *dev, \ |
546 | struct device_attribute *attr, char *buf) \ | |
c3ee74c4 | 547 | { \ |
ee959b00 | 548 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c3ee74c4 CH |
549 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
550 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
551 | int error; \ | |
552 | \ | |
dd9fbb52 | 553 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
554 | if (error) \ |
555 | return error; \ | |
556 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
557 | } | |
558 | ||
559 | #define sas_phy_linkerror_attr(field) \ | |
560 | sas_phy_show_linkerror(field) \ | |
ee959b00 | 561 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c3ee74c4 CH |
562 | |
563 | ||
c7ebbbce | 564 | static ssize_t |
ee959b00 TJ |
565 | show_sas_device_type(struct device *dev, |
566 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 567 | { |
ee959b00 | 568 | struct sas_phy *phy = transport_class_to_phy(dev); |
c7ebbbce CH |
569 | |
570 | if (!phy->identify.device_type) | |
571 | return snprintf(buf, 20, "none\n"); | |
572 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
573 | } | |
ee959b00 | 574 | static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
c7ebbbce | 575 | |
ee959b00 | 576 | static ssize_t do_sas_phy_enable(struct device *dev, |
acbf167d DW |
577 | size_t count, int enable) |
578 | { | |
ee959b00 | 579 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
580 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
581 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
582 | int error; | |
583 | ||
584 | error = i->f->phy_enable(phy, enable); | |
585 | if (error) | |
586 | return error; | |
587 | phy->enabled = enable; | |
588 | return count; | |
589 | }; | |
590 | ||
ee959b00 TJ |
591 | static ssize_t |
592 | store_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
593 | const char *buf, size_t count) | |
acbf167d DW |
594 | { |
595 | if (count < 1) | |
596 | return -EINVAL; | |
597 | ||
598 | switch (buf[0]) { | |
599 | case '0': | |
ee959b00 | 600 | do_sas_phy_enable(dev, count, 0); |
acbf167d DW |
601 | break; |
602 | case '1': | |
ee959b00 | 603 | do_sas_phy_enable(dev, count, 1); |
acbf167d DW |
604 | break; |
605 | default: | |
606 | return -EINVAL; | |
607 | } | |
608 | ||
609 | return count; | |
610 | } | |
611 | ||
ee959b00 TJ |
612 | static ssize_t |
613 | show_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
614 | char *buf) | |
acbf167d | 615 | { |
ee959b00 | 616 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
617 | |
618 | return snprintf(buf, 20, "%d", phy->enabled); | |
619 | } | |
620 | ||
ee959b00 | 621 | static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, |
acbf167d DW |
622 | store_sas_phy_enable); |
623 | ||
ee959b00 TJ |
624 | static ssize_t |
625 | do_sas_phy_reset(struct device *dev, size_t count, int hard_reset) | |
07ba3a95 | 626 | { |
ee959b00 | 627 | struct sas_phy *phy = transport_class_to_phy(dev); |
07ba3a95 CH |
628 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
629 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
630 | int error; | |
631 | ||
07ba3a95 CH |
632 | error = i->f->phy_reset(phy, hard_reset); |
633 | if (error) | |
634 | return error; | |
16d3db1b | 635 | phy->enabled = 1; |
07ba3a95 CH |
636 | return count; |
637 | }; | |
638 | ||
ee959b00 TJ |
639 | static ssize_t |
640 | store_sas_link_reset(struct device *dev, struct device_attribute *attr, | |
641 | const char *buf, size_t count) | |
07ba3a95 | 642 | { |
ee959b00 | 643 | return do_sas_phy_reset(dev, count, 0); |
07ba3a95 | 644 | } |
ee959b00 | 645 | static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); |
07ba3a95 | 646 | |
ee959b00 TJ |
647 | static ssize_t |
648 | store_sas_hard_reset(struct device *dev, struct device_attribute *attr, | |
649 | const char *buf, size_t count) | |
07ba3a95 | 650 | { |
ee959b00 | 651 | return do_sas_phy_reset(dev, count, 1); |
07ba3a95 | 652 | } |
ee959b00 | 653 | static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); |
07ba3a95 | 654 | |
c7ebbbce CH |
655 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
656 | initiator_port_protocols); | |
657 | sas_phy_protocol_attr(identify.target_port_protocols, | |
658 | target_port_protocols); | |
659 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
660 | unsigned long long); | |
661 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 662 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
663 | sas_phy_linkspeed_attr(negotiated_linkrate); |
664 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 665 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 666 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 667 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
668 | sas_phy_linkerror_attr(invalid_dword_count); |
669 | sas_phy_linkerror_attr(running_disparity_error_count); | |
670 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
671 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce | 672 | |
0b3e09da DW |
673 | static int sas_phy_setup(struct transport_container *tc, struct device *dev, |
674 | struct device *cdev) | |
675 | { | |
676 | struct sas_phy *phy = dev_to_phy(dev); | |
677 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
678 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
679 | ||
680 | if (i->f->phy_setup) | |
681 | i->f->phy_setup(phy); | |
682 | ||
683 | return 0; | |
684 | } | |
c7ebbbce CH |
685 | |
686 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
0b3e09da | 687 | "sas_phy", sas_phy_setup, NULL, NULL); |
c7ebbbce CH |
688 | |
689 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
690 | { | |
691 | struct Scsi_Host *shost; | |
692 | struct sas_internal *i; | |
693 | ||
694 | if (!scsi_is_sas_phy(dev)) | |
695 | return 0; | |
696 | shost = dev_to_shost(dev->parent); | |
697 | ||
698 | if (!shost->transportt) | |
699 | return 0; | |
700 | if (shost->transportt->host_attrs.ac.class != | |
701 | &sas_host_class.class) | |
702 | return 0; | |
703 | ||
704 | i = to_sas_internal(shost->transportt); | |
705 | return &i->phy_attr_cont.ac == cont; | |
706 | } | |
707 | ||
708 | static void sas_phy_release(struct device *dev) | |
709 | { | |
710 | struct sas_phy *phy = dev_to_phy(dev); | |
0b3e09da DW |
711 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
712 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
c7ebbbce | 713 | |
0b3e09da DW |
714 | if (i->f->phy_release) |
715 | i->f->phy_release(phy); | |
c7ebbbce CH |
716 | put_device(dev->parent); |
717 | kfree(phy); | |
718 | } | |
719 | ||
720 | /** | |
eb44820c | 721 | * sas_phy_alloc - allocates and initialize a SAS PHY structure |
c7ebbbce | 722 | * @parent: Parent device |
d99ca418 | 723 | * @number: Phy index |
c7ebbbce CH |
724 | * |
725 | * Allocates an SAS PHY structure. It will be added in the device tree | |
726 | * below the device specified by @parent, which has to be either a Scsi_Host | |
727 | * or sas_rphy. | |
728 | * | |
729 | * Returns: | |
730 | * SAS PHY allocated or %NULL if the allocation failed. | |
731 | */ | |
732 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
733 | { | |
734 | struct Scsi_Host *shost = dev_to_shost(parent); | |
735 | struct sas_phy *phy; | |
736 | ||
24669f75 | 737 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
738 | if (!phy) |
739 | return NULL; | |
c7ebbbce | 740 | |
c7ebbbce | 741 | phy->number = number; |
acbf167d | 742 | phy->enabled = 1; |
c7ebbbce CH |
743 | |
744 | device_initialize(&phy->dev); | |
745 | phy->dev.parent = get_device(parent); | |
746 | phy->dev.release = sas_phy_release; | |
65c92b09 | 747 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
748 | if (scsi_is_sas_expander_device(parent)) { |
749 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 | 750 | dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
751 | rphy->scsi_target_id, number); |
752 | } else | |
71610f55 | 753 | dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number); |
c7ebbbce CH |
754 | |
755 | transport_setup_device(&phy->dev); | |
756 | ||
757 | return phy; | |
758 | } | |
759 | EXPORT_SYMBOL(sas_phy_alloc); | |
760 | ||
761 | /** | |
eb44820c | 762 | * sas_phy_add - add a SAS PHY to the device hierarchy |
c7ebbbce CH |
763 | * @phy: The PHY to be added |
764 | * | |
765 | * Publishes a SAS PHY to the rest of the system. | |
766 | */ | |
767 | int sas_phy_add(struct sas_phy *phy) | |
768 | { | |
769 | int error; | |
770 | ||
771 | error = device_add(&phy->dev); | |
772 | if (!error) { | |
773 | transport_add_device(&phy->dev); | |
774 | transport_configure_device(&phy->dev); | |
775 | } | |
776 | ||
777 | return error; | |
778 | } | |
779 | EXPORT_SYMBOL(sas_phy_add); | |
780 | ||
781 | /** | |
eb44820c | 782 | * sas_phy_free - free a SAS PHY |
c7ebbbce CH |
783 | * @phy: SAS PHY to free |
784 | * | |
785 | * Frees the specified SAS PHY. | |
786 | * | |
787 | * Note: | |
788 | * This function must only be called on a PHY that has not | |
af901ca1 | 789 | * successfully been added using sas_phy_add(). |
c7ebbbce CH |
790 | */ |
791 | void sas_phy_free(struct sas_phy *phy) | |
792 | { | |
793 | transport_destroy_device(&phy->dev); | |
92aab646 | 794 | put_device(&phy->dev); |
c7ebbbce CH |
795 | } |
796 | EXPORT_SYMBOL(sas_phy_free); | |
797 | ||
798 | /** | |
eb44820c | 799 | * sas_phy_delete - remove SAS PHY |
c7ebbbce CH |
800 | * @phy: SAS PHY to remove |
801 | * | |
802 | * Removes the specified SAS PHY. If the SAS PHY has an | |
803 | * associated remote PHY it is removed before. | |
804 | */ | |
805 | void | |
806 | sas_phy_delete(struct sas_phy *phy) | |
807 | { | |
808 | struct device *dev = &phy->dev; | |
809 | ||
65c92b09 JB |
810 | /* this happens if the phy is still part of a port when deleted */ |
811 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
812 | |
813 | transport_remove_device(dev); | |
814 | device_del(dev); | |
815 | transport_destroy_device(dev); | |
92aab646 | 816 | put_device(dev); |
c7ebbbce CH |
817 | } |
818 | EXPORT_SYMBOL(sas_phy_delete); | |
819 | ||
820 | /** | |
eb44820c | 821 | * scsi_is_sas_phy - check if a struct device represents a SAS PHY |
c7ebbbce CH |
822 | * @dev: device to check |
823 | * | |
824 | * Returns: | |
825 | * %1 if the device represents a SAS PHY, %0 else | |
826 | */ | |
827 | int scsi_is_sas_phy(const struct device *dev) | |
828 | { | |
829 | return dev->release == sas_phy_release; | |
830 | } | |
831 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
832 | ||
65c92b09 JB |
833 | /* |
834 | * SAS Port attributes | |
835 | */ | |
836 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
837 | static ssize_t \ | |
ee959b00 TJ |
838 | show_sas_port_##name(struct device *dev, \ |
839 | struct device_attribute *attr, char *buf) \ | |
65c92b09 | 840 | { \ |
ee959b00 | 841 | struct sas_port *port = transport_class_to_sas_port(dev); \ |
65c92b09 JB |
842 | \ |
843 | return snprintf(buf, 20, format_string, cast port->field); \ | |
844 | } | |
845 | ||
846 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
847 | sas_port_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 848 | static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) |
65c92b09 JB |
849 | |
850 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
851 | ||
852 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
853 | "sas_port", NULL, NULL, NULL); | |
854 | ||
855 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
856 | { | |
857 | struct Scsi_Host *shost; | |
858 | struct sas_internal *i; | |
859 | ||
860 | if (!scsi_is_sas_port(dev)) | |
861 | return 0; | |
862 | shost = dev_to_shost(dev->parent); | |
863 | ||
864 | if (!shost->transportt) | |
865 | return 0; | |
866 | if (shost->transportt->host_attrs.ac.class != | |
867 | &sas_host_class.class) | |
868 | return 0; | |
869 | ||
870 | i = to_sas_internal(shost->transportt); | |
871 | return &i->port_attr_cont.ac == cont; | |
872 | } | |
873 | ||
874 | ||
875 | static void sas_port_release(struct device *dev) | |
876 | { | |
877 | struct sas_port *port = dev_to_sas_port(dev); | |
878 | ||
879 | BUG_ON(!list_empty(&port->phy_list)); | |
880 | ||
881 | put_device(dev->parent); | |
882 | kfree(port); | |
883 | } | |
884 | ||
885 | static void sas_port_create_link(struct sas_port *port, | |
886 | struct sas_phy *phy) | |
887 | { | |
21434966 DW |
888 | int res; |
889 | ||
890 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
71610f55 | 891 | dev_name(&phy->dev)); |
21434966 DW |
892 | if (res) |
893 | goto err; | |
894 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
895 | if (res) | |
896 | goto err; | |
897 | return; | |
898 | err: | |
899 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
cadbd4a5 | 900 | __func__, res); |
65c92b09 JB |
901 | } |
902 | ||
903 | static void sas_port_delete_link(struct sas_port *port, | |
904 | struct sas_phy *phy) | |
905 | { | |
71610f55 | 906 | sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev)); |
65c92b09 JB |
907 | sysfs_remove_link(&phy->dev.kobj, "port"); |
908 | } | |
909 | ||
910 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
911 | * | |
912 | * @parent: parent device | |
913 | * @port_id: port number | |
914 | * | |
915 | * Allocates a SAS port structure. It will be added to the device tree | |
916 | * below the device specified by @parent which must be either a Scsi_Host | |
917 | * or a sas_expander_device. | |
918 | * | |
919 | * Returns %NULL on error | |
920 | */ | |
921 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
922 | { | |
923 | struct Scsi_Host *shost = dev_to_shost(parent); | |
924 | struct sas_port *port; | |
925 | ||
926 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
927 | if (!port) | |
928 | return NULL; | |
929 | ||
930 | port->port_identifier = port_id; | |
931 | ||
932 | device_initialize(&port->dev); | |
933 | ||
934 | port->dev.parent = get_device(parent); | |
935 | port->dev.release = sas_port_release; | |
936 | ||
937 | mutex_init(&port->phy_list_mutex); | |
938 | INIT_LIST_HEAD(&port->phy_list); | |
939 | ||
940 | if (scsi_is_sas_expander_device(parent)) { | |
941 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 KS |
942 | dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no, |
943 | rphy->scsi_target_id, port->port_identifier); | |
65c92b09 | 944 | } else |
71610f55 KS |
945 | dev_set_name(&port->dev, "port-%d:%d", shost->host_no, |
946 | port->port_identifier); | |
65c92b09 JB |
947 | |
948 | transport_setup_device(&port->dev); | |
949 | ||
950 | return port; | |
951 | } | |
952 | EXPORT_SYMBOL(sas_port_alloc); | |
953 | ||
c9fefeb2 JB |
954 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
955 | * | |
956 | * @parent: parent device | |
957 | * | |
958 | * Allocates a SAS port structure and a number to go with it. This | |
959 | * interface is really for adapters where the port number has no | |
960 | * meansing, so the sas class should manage them. It will be added to | |
961 | * the device tree below the device specified by @parent which must be | |
962 | * either a Scsi_Host or a sas_expander_device. | |
963 | * | |
964 | * Returns %NULL on error | |
965 | */ | |
966 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
967 | { | |
968 | int index; | |
969 | struct Scsi_Host *shost = dev_to_shost(parent); | |
970 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
971 | ||
972 | /* FIXME: use idr for this eventually */ | |
973 | mutex_lock(&sas_host->lock); | |
974 | if (scsi_is_sas_expander_device(parent)) { | |
975 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
976 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
977 | ||
978 | index = exp->next_port_id++; | |
979 | } else | |
980 | index = sas_host->next_port_id++; | |
981 | mutex_unlock(&sas_host->lock); | |
982 | return sas_port_alloc(parent, index); | |
983 | } | |
984 | EXPORT_SYMBOL(sas_port_alloc_num); | |
985 | ||
65c92b09 JB |
986 | /** |
987 | * sas_port_add - add a SAS port to the device hierarchy | |
65c92b09 JB |
988 | * @port: port to be added |
989 | * | |
990 | * publishes a port to the rest of the system | |
991 | */ | |
992 | int sas_port_add(struct sas_port *port) | |
993 | { | |
994 | int error; | |
995 | ||
996 | /* No phys should be added until this is made visible */ | |
997 | BUG_ON(!list_empty(&port->phy_list)); | |
998 | ||
999 | error = device_add(&port->dev); | |
1000 | ||
1001 | if (error) | |
1002 | return error; | |
1003 | ||
1004 | transport_add_device(&port->dev); | |
1005 | transport_configure_device(&port->dev); | |
1006 | ||
1007 | return 0; | |
1008 | } | |
1009 | EXPORT_SYMBOL(sas_port_add); | |
1010 | ||
1011 | /** | |
eb44820c | 1012 | * sas_port_free - free a SAS PORT |
65c92b09 JB |
1013 | * @port: SAS PORT to free |
1014 | * | |
1015 | * Frees the specified SAS PORT. | |
1016 | * | |
1017 | * Note: | |
1018 | * This function must only be called on a PORT that has not | |
af901ca1 | 1019 | * successfully been added using sas_port_add(). |
65c92b09 JB |
1020 | */ |
1021 | void sas_port_free(struct sas_port *port) | |
1022 | { | |
1023 | transport_destroy_device(&port->dev); | |
1024 | put_device(&port->dev); | |
1025 | } | |
1026 | EXPORT_SYMBOL(sas_port_free); | |
1027 | ||
1028 | /** | |
eb44820c | 1029 | * sas_port_delete - remove SAS PORT |
65c92b09 JB |
1030 | * @port: SAS PORT to remove |
1031 | * | |
1032 | * Removes the specified SAS PORT. If the SAS PORT has an | |
1033 | * associated phys, unlink them from the port as well. | |
1034 | */ | |
1035 | void sas_port_delete(struct sas_port *port) | |
1036 | { | |
1037 | struct device *dev = &port->dev; | |
1038 | struct sas_phy *phy, *tmp_phy; | |
1039 | ||
1040 | if (port->rphy) { | |
1041 | sas_rphy_delete(port->rphy); | |
1042 | port->rphy = NULL; | |
1043 | } | |
1044 | ||
1045 | mutex_lock(&port->phy_list_mutex); | |
1046 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
1047 | port_siblings) { | |
1048 | sas_port_delete_link(port, phy); | |
1049 | list_del_init(&phy->port_siblings); | |
1050 | } | |
1051 | mutex_unlock(&port->phy_list_mutex); | |
1052 | ||
a0e1b6ef JB |
1053 | if (port->is_backlink) { |
1054 | struct device *parent = port->dev.parent; | |
1055 | ||
71610f55 | 1056 | sysfs_remove_link(&port->dev.kobj, dev_name(parent)); |
a0e1b6ef JB |
1057 | port->is_backlink = 0; |
1058 | } | |
1059 | ||
65c92b09 JB |
1060 | transport_remove_device(dev); |
1061 | device_del(dev); | |
1062 | transport_destroy_device(dev); | |
1063 | put_device(dev); | |
1064 | } | |
1065 | EXPORT_SYMBOL(sas_port_delete); | |
1066 | ||
1067 | /** | |
eb44820c | 1068 | * scsi_is_sas_port - check if a struct device represents a SAS port |
65c92b09 JB |
1069 | * @dev: device to check |
1070 | * | |
1071 | * Returns: | |
1072 | * %1 if the device represents a SAS Port, %0 else | |
1073 | */ | |
1074 | int scsi_is_sas_port(const struct device *dev) | |
1075 | { | |
1076 | return dev->release == sas_port_release; | |
1077 | } | |
1078 | EXPORT_SYMBOL(scsi_is_sas_port); | |
1079 | ||
f41a0c44 DW |
1080 | /** |
1081 | * sas_port_get_phy - try to take a reference on a port member | |
1082 | * @port: port to check | |
1083 | */ | |
1084 | struct sas_phy *sas_port_get_phy(struct sas_port *port) | |
1085 | { | |
1086 | struct sas_phy *phy; | |
1087 | ||
1088 | mutex_lock(&port->phy_list_mutex); | |
1089 | if (list_empty(&port->phy_list)) | |
1090 | phy = NULL; | |
1091 | else { | |
1092 | struct list_head *ent = port->phy_list.next; | |
1093 | ||
1094 | phy = list_entry(ent, typeof(*phy), port_siblings); | |
1095 | get_device(&phy->dev); | |
1096 | } | |
1097 | mutex_unlock(&port->phy_list_mutex); | |
1098 | ||
1099 | return phy; | |
1100 | } | |
1101 | EXPORT_SYMBOL(sas_port_get_phy); | |
1102 | ||
65c92b09 JB |
1103 | /** |
1104 | * sas_port_add_phy - add another phy to a port to form a wide port | |
1105 | * @port: port to add the phy to | |
1106 | * @phy: phy to add | |
1107 | * | |
1108 | * When a port is initially created, it is empty (has no phys). All | |
1109 | * ports must have at least one phy to operated, and all wide ports | |
1110 | * must have at least two. The current code makes no difference | |
1111 | * between ports and wide ports, but the only object that can be | |
1112 | * connected to a remote device is a port, so ports must be formed on | |
1113 | * all devices with phys if they're connected to anything. | |
1114 | */ | |
1115 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
1116 | { | |
1117 | mutex_lock(&port->phy_list_mutex); | |
1118 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
1119 | /* make sure we're already on this port */ | |
1120 | struct sas_phy *tmp; | |
1121 | ||
1122 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
1123 | if (tmp == phy) | |
1124 | break; | |
1125 | /* If this trips, you added a phy that was already | |
1126 | * part of a different port */ | |
1127 | if (unlikely(tmp != phy)) { | |
71610f55 KS |
1128 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", |
1129 | dev_name(&phy->dev)); | |
65c92b09 JB |
1130 | BUG(); |
1131 | } | |
1132 | } else { | |
1133 | sas_port_create_link(port, phy); | |
1134 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
1135 | port->num_phys++; | |
1136 | } | |
1137 | mutex_unlock(&port->phy_list_mutex); | |
1138 | } | |
1139 | EXPORT_SYMBOL(sas_port_add_phy); | |
1140 | ||
1141 | /** | |
1142 | * sas_port_delete_phy - remove a phy from a port or wide port | |
1143 | * @port: port to remove the phy from | |
1144 | * @phy: phy to remove | |
1145 | * | |
1146 | * This operation is used for tearing down ports again. It must be | |
1147 | * done to every port or wide port before calling sas_port_delete. | |
1148 | */ | |
1149 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
1150 | { | |
1151 | mutex_lock(&port->phy_list_mutex); | |
1152 | sas_port_delete_link(port, phy); | |
1153 | list_del_init(&phy->port_siblings); | |
1154 | port->num_phys--; | |
1155 | mutex_unlock(&port->phy_list_mutex); | |
1156 | } | |
1157 | EXPORT_SYMBOL(sas_port_delete_phy); | |
1158 | ||
a0e1b6ef JB |
1159 | void sas_port_mark_backlink(struct sas_port *port) |
1160 | { | |
21434966 | 1161 | int res; |
a0e1b6ef JB |
1162 | struct device *parent = port->dev.parent->parent->parent; |
1163 | ||
1164 | if (port->is_backlink) | |
1165 | return; | |
1166 | port->is_backlink = 1; | |
21434966 | 1167 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
71610f55 | 1168 | dev_name(parent)); |
21434966 DW |
1169 | if (res) |
1170 | goto err; | |
1171 | return; | |
1172 | err: | |
1173 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
cadbd4a5 | 1174 | __func__, res); |
a0e1b6ef JB |
1175 | |
1176 | } | |
1177 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
1178 | ||
c7ebbbce CH |
1179 | /* |
1180 | * SAS remote PHY attributes. | |
1181 | */ | |
1182 | ||
1183 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
1184 | static ssize_t \ | |
ee959b00 TJ |
1185 | show_sas_rphy_##name(struct device *dev, \ |
1186 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1187 | { \ |
ee959b00 | 1188 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1189 | \ |
1190 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
1191 | } | |
1192 | ||
1193 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
1194 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1195 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1196 | show_sas_rphy_##name, NULL) |
1197 | ||
1198 | #define sas_rphy_show_protocol(field, name) \ | |
1199 | static ssize_t \ | |
ee959b00 TJ |
1200 | show_sas_rphy_##name(struct device *dev, \ |
1201 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1202 | { \ |
ee959b00 | 1203 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1204 | \ |
1205 | if (!rphy->field) \ | |
1206 | return snprintf(buf, 20, "none\n"); \ | |
1207 | return get_sas_protocol_names(rphy->field, buf); \ | |
1208 | } | |
1209 | ||
1210 | #define sas_rphy_protocol_attr(field, name) \ | |
1211 | sas_rphy_show_protocol(field, name) \ | |
ee959b00 | 1212 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1213 | show_sas_rphy_##name, NULL) |
1214 | ||
1215 | static ssize_t | |
ee959b00 TJ |
1216 | show_sas_rphy_device_type(struct device *dev, |
1217 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 1218 | { |
ee959b00 | 1219 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
c7ebbbce CH |
1220 | |
1221 | if (!rphy->identify.device_type) | |
1222 | return snprintf(buf, 20, "none\n"); | |
1223 | return get_sas_device_type_names( | |
1224 | rphy->identify.device_type, buf); | |
1225 | } | |
1226 | ||
ee959b00 | 1227 | static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO, |
c7ebbbce CH |
1228 | show_sas_rphy_device_type, NULL); |
1229 | ||
a0125641 | 1230 | static ssize_t |
ee959b00 TJ |
1231 | show_sas_rphy_enclosure_identifier(struct device *dev, |
1232 | struct device_attribute *attr, char *buf) | |
a0125641 | 1233 | { |
ee959b00 | 1234 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1235 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1236 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1237 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1238 | u64 identifier; | |
1239 | int error; | |
1240 | ||
a0125641 CH |
1241 | error = i->f->get_enclosure_identifier(rphy, &identifier); |
1242 | if (error) | |
1243 | return error; | |
1244 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
1245 | } | |
1246 | ||
ee959b00 | 1247 | static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, |
a0125641 CH |
1248 | show_sas_rphy_enclosure_identifier, NULL); |
1249 | ||
1250 | static ssize_t | |
ee959b00 TJ |
1251 | show_sas_rphy_bay_identifier(struct device *dev, |
1252 | struct device_attribute *attr, char *buf) | |
a0125641 | 1253 | { |
ee959b00 | 1254 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1255 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1256 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1257 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1258 | int val; | |
1259 | ||
a0125641 CH |
1260 | val = i->f->get_bay_identifier(rphy); |
1261 | if (val < 0) | |
1262 | return val; | |
1263 | return sprintf(buf, "%d\n", val); | |
1264 | } | |
1265 | ||
ee959b00 | 1266 | static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, |
a0125641 CH |
1267 | show_sas_rphy_bay_identifier, NULL); |
1268 | ||
c7ebbbce CH |
1269 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
1270 | initiator_port_protocols); | |
1271 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
1272 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
1273 | unsigned long long); | |
1274 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
1275 | ||
42ab0360 JB |
1276 | /* only need 8 bytes of data plus header (4 or 8) */ |
1277 | #define BUF_SIZE 64 | |
1278 | ||
1279 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1280 | { | |
1281 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
0f88009d | 1282 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); |
42ab0360 JB |
1283 | struct scsi_mode_data mode_data; |
1284 | int res, error; | |
1285 | ||
42ab0360 JB |
1286 | if (!buffer) |
1287 | return -ENOMEM; | |
1288 | ||
1289 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1290 | &mode_data, NULL); | |
1291 | ||
1292 | error = -EINVAL; | |
1293 | if (!scsi_status_is_good(res)) | |
1294 | goto out; | |
1295 | ||
1296 | msdata = buffer + mode_data.header_length + | |
1297 | mode_data.block_descriptor_length; | |
1298 | ||
1299 | if (msdata - buffer > BUF_SIZE - 8) | |
1300 | goto out; | |
1301 | ||
1302 | error = 0; | |
1303 | ||
1304 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1305 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1306 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1307 | ||
1308 | out: | |
1309 | kfree(buffer); | |
1310 | return error; | |
1311 | } | |
1312 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1313 | ||
79cb1819 JB |
1314 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1315 | "sas_end_device", NULL, NULL, NULL); | |
1316 | ||
42ab0360 JB |
1317 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1318 | static ssize_t \ | |
ee959b00 TJ |
1319 | show_sas_end_dev_##name(struct device *dev, \ |
1320 | struct device_attribute *attr, char *buf) \ | |
42ab0360 | 1321 | { \ |
ee959b00 | 1322 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
42ab0360 JB |
1323 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ |
1324 | \ | |
1325 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1326 | } | |
1327 | ||
1328 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1329 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1330 | static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ |
42ab0360 JB |
1331 | show_sas_end_dev_##name, NULL) |
1332 | ||
1333 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1334 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1335 | "%d\n", int); | |
1336 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1337 | "%d\n", int); | |
0f88009d JB |
1338 | sas_end_dev_simple_attr(tlr_supported, tlr_supported, |
1339 | "%d\n", int); | |
1340 | sas_end_dev_simple_attr(tlr_enabled, tlr_enabled, | |
1341 | "%d\n", int); | |
42ab0360 | 1342 | |
79cb1819 JB |
1343 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1344 | "sas_expander", NULL, NULL, NULL); | |
1345 | ||
1346 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1347 | static ssize_t \ | |
ee959b00 TJ |
1348 | show_sas_expander_##name(struct device *dev, \ |
1349 | struct device_attribute *attr, char *buf) \ | |
79cb1819 | 1350 | { \ |
ee959b00 | 1351 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
79cb1819 JB |
1352 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ |
1353 | \ | |
1354 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1355 | } | |
1356 | ||
1357 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1358 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1359 | static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \ |
79cb1819 JB |
1360 | show_sas_expander_##name, NULL) |
1361 | ||
1362 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1363 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1364 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1365 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1366 | "%s\n", char *); | |
1367 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1368 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1369 | unsigned int); | |
1370 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1371 | |
c7ebbbce | 1372 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1373 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1374 | |
1375 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1376 | { | |
1377 | struct Scsi_Host *shost; | |
1378 | struct sas_internal *i; | |
1379 | ||
1380 | if (!scsi_is_sas_rphy(dev)) | |
1381 | return 0; | |
1382 | shost = dev_to_shost(dev->parent->parent); | |
1383 | ||
1384 | if (!shost->transportt) | |
1385 | return 0; | |
1386 | if (shost->transportt->host_attrs.ac.class != | |
1387 | &sas_host_class.class) | |
1388 | return 0; | |
1389 | ||
1390 | i = to_sas_internal(shost->transportt); | |
1391 | return &i->rphy_attr_cont.ac == cont; | |
1392 | } | |
1393 | ||
42ab0360 JB |
1394 | static int sas_end_dev_match(struct attribute_container *cont, |
1395 | struct device *dev) | |
1396 | { | |
1397 | struct Scsi_Host *shost; | |
1398 | struct sas_internal *i; | |
1399 | struct sas_rphy *rphy; | |
1400 | ||
1401 | if (!scsi_is_sas_rphy(dev)) | |
1402 | return 0; | |
1403 | shost = dev_to_shost(dev->parent->parent); | |
1404 | rphy = dev_to_rphy(dev); | |
1405 | ||
1406 | if (!shost->transportt) | |
1407 | return 0; | |
1408 | if (shost->transportt->host_attrs.ac.class != | |
1409 | &sas_host_class.class) | |
1410 | return 0; | |
1411 | ||
1412 | i = to_sas_internal(shost->transportt); | |
1413 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1414 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1415 | } |
1416 | ||
79cb1819 JB |
1417 | static int sas_expander_match(struct attribute_container *cont, |
1418 | struct device *dev) | |
1419 | { | |
1420 | struct Scsi_Host *shost; | |
1421 | struct sas_internal *i; | |
1422 | struct sas_rphy *rphy; | |
1423 | ||
1424 | if (!scsi_is_sas_rphy(dev)) | |
1425 | return 0; | |
1426 | shost = dev_to_shost(dev->parent->parent); | |
1427 | rphy = dev_to_rphy(dev); | |
1428 | ||
1429 | if (!shost->transportt) | |
1430 | return 0; | |
1431 | if (shost->transportt->host_attrs.ac.class != | |
1432 | &sas_host_class.class) | |
1433 | return 0; | |
1434 | ||
1435 | i = to_sas_internal(shost->transportt); | |
1436 | return &i->expander_attr_cont.ac == cont && | |
1437 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1438 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1439 | } |
1440 | ||
2f8600df | 1441 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1442 | { |
1443 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1444 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce | 1445 | |
93c20a59 FT |
1446 | if (rphy->q) |
1447 | blk_cleanup_queue(rphy->q); | |
1448 | ||
c7ebbbce | 1449 | put_device(dev->parent); |
2f8600df | 1450 | kfree(edev); |
c7ebbbce CH |
1451 | } |
1452 | ||
2f8600df | 1453 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1454 | { |
2f8600df JB |
1455 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1456 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1457 | |
93c20a59 FT |
1458 | if (rphy->q) |
1459 | blk_cleanup_queue(rphy->q); | |
1460 | ||
2f8600df JB |
1461 | put_device(dev->parent); |
1462 | kfree(edev); | |
c7ebbbce | 1463 | } |
c7ebbbce | 1464 | |
c5943d36 JB |
1465 | /** |
1466 | * sas_rphy_initialize - common rphy intialization | |
1467 | * @rphy: rphy to initialise | |
1468 | * | |
1469 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1470 | * initialise the common rphy component of each. | |
1471 | */ | |
1472 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1473 | { | |
1474 | INIT_LIST_HEAD(&rphy->list); | |
1475 | } | |
1476 | ||
42ab0360 JB |
1477 | /** |
1478 | * sas_end_device_alloc - allocate an rphy for an end device | |
eb44820c | 1479 | * @parent: which port |
42ab0360 JB |
1480 | * |
1481 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1482 | * | |
1483 | * Returns: | |
1484 | * SAS PHY allocated or %NULL if the allocation failed. | |
1485 | */ | |
65c92b09 | 1486 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1487 | { |
1488 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1489 | struct sas_end_device *rdev; | |
1490 | ||
1491 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1492 | if (!rdev) { | |
42ab0360 JB |
1493 | return NULL; |
1494 | } | |
1495 | ||
1496 | device_initialize(&rdev->rphy.dev); | |
1497 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1498 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1499 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1500 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
71610f55 KS |
1501 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d", |
1502 | shost->host_no, rphy->scsi_target_id, | |
1503 | parent->port_identifier); | |
65c92b09 | 1504 | } else |
71610f55 KS |
1505 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d", |
1506 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1507 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1508 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1509 | transport_setup_device(&rdev->rphy.dev); |
1510 | ||
1511 | return &rdev->rphy; | |
1512 | } | |
1513 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1514 | ||
79cb1819 JB |
1515 | /** |
1516 | * sas_expander_alloc - allocate an rphy for an end device | |
eb44820c RL |
1517 | * @parent: which port |
1518 | * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE | |
79cb1819 JB |
1519 | * |
1520 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1521 | * | |
1522 | * Returns: | |
1523 | * SAS PHY allocated or %NULL if the allocation failed. | |
1524 | */ | |
65c92b09 | 1525 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1526 | enum sas_device_type type) |
1527 | { | |
1528 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1529 | struct sas_expander_device *rdev; | |
1530 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1531 | ||
1532 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1533 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1534 | ||
1535 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1536 | if (!rdev) { | |
79cb1819 JB |
1537 | return NULL; |
1538 | } | |
1539 | ||
1540 | device_initialize(&rdev->rphy.dev); | |
1541 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1542 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1543 | mutex_lock(&sas_host->lock); |
1544 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1545 | mutex_unlock(&sas_host->lock); | |
71610f55 KS |
1546 | dev_set_name(&rdev->rphy.dev, "expander-%d:%d", |
1547 | shost->host_no, rdev->rphy.scsi_target_id); | |
79cb1819 | 1548 | rdev->rphy.identify.device_type = type; |
c5943d36 | 1549 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1550 | transport_setup_device(&rdev->rphy.dev); |
1551 | ||
1552 | return &rdev->rphy; | |
1553 | } | |
1554 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1555 | |
c7ebbbce | 1556 | /** |
eb44820c | 1557 | * sas_rphy_add - add a SAS remote PHY to the device hierarchy |
c7ebbbce CH |
1558 | * @rphy: The remote PHY to be added |
1559 | * | |
1560 | * Publishes a SAS remote PHY to the rest of the system. | |
1561 | */ | |
1562 | int sas_rphy_add(struct sas_rphy *rphy) | |
1563 | { | |
65c92b09 | 1564 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1565 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1566 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1567 | struct sas_identify *identify = &rphy->identify; | |
1568 | int error; | |
1569 | ||
1570 | if (parent->rphy) | |
1571 | return -ENXIO; | |
1572 | parent->rphy = rphy; | |
1573 | ||
1574 | error = device_add(&rphy->dev); | |
1575 | if (error) | |
1576 | return error; | |
1577 | transport_add_device(&rphy->dev); | |
1578 | transport_configure_device(&rphy->dev); | |
39dca558 | 1579 | if (sas_bsg_initialize(shost, rphy)) |
71610f55 | 1580 | printk("fail to a bsg device %s\n", dev_name(&rphy->dev)); |
39dca558 | 1581 | |
c7ebbbce | 1582 | |
e02f3f59 | 1583 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1584 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1585 | if (identify->device_type == SAS_END_DEVICE && | |
1586 | (identify->target_port_protocols & | |
1587 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1588 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1589 | else if (identify->device_type == SAS_END_DEVICE) |
1590 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1591 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1592 | |
79cb1819 JB |
1593 | if (identify->device_type == SAS_END_DEVICE && |
1594 | rphy->scsi_target_id != -1) { | |
2fc62e2a DW |
1595 | int lun; |
1596 | ||
1597 | if (identify->target_port_protocols & SAS_PROTOCOL_SSP) | |
1598 | lun = SCAN_WILD_CARD; | |
1599 | else | |
1600 | lun = 0; | |
1601 | ||
1602 | scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, lun, 0); | |
c7ebbbce CH |
1603 | } |
1604 | ||
1605 | return 0; | |
1606 | } | |
1607 | EXPORT_SYMBOL(sas_rphy_add); | |
1608 | ||
1609 | /** | |
eb44820c RL |
1610 | * sas_rphy_free - free a SAS remote PHY |
1611 | * @rphy: SAS remote PHY to free | |
c7ebbbce CH |
1612 | * |
1613 | * Frees the specified SAS remote PHY. | |
1614 | * | |
1615 | * Note: | |
1616 | * This function must only be called on a remote | |
af901ca1 | 1617 | * PHY that has not successfully been added using |
6f63caae | 1618 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
c7ebbbce CH |
1619 | */ |
1620 | void sas_rphy_free(struct sas_rphy *rphy) | |
1621 | { | |
92aab646 | 1622 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1623 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1624 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1625 | ||
e02f3f59 | 1626 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1627 | list_del(&rphy->list); |
e02f3f59 | 1628 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1629 | |
92aab646 | 1630 | transport_destroy_device(dev); |
2f8600df | 1631 | |
92aab646 | 1632 | put_device(dev); |
c7ebbbce CH |
1633 | } |
1634 | EXPORT_SYMBOL(sas_rphy_free); | |
1635 | ||
1636 | /** | |
eb44820c | 1637 | * sas_rphy_delete - remove and free SAS remote PHY |
6f63caae | 1638 | * @rphy: SAS remote PHY to remove and free |
c7ebbbce | 1639 | * |
6f63caae | 1640 | * Removes the specified SAS remote PHY and frees it. |
c7ebbbce CH |
1641 | */ |
1642 | void | |
1643 | sas_rphy_delete(struct sas_rphy *rphy) | |
6f63caae DW |
1644 | { |
1645 | sas_rphy_remove(rphy); | |
1646 | sas_rphy_free(rphy); | |
1647 | } | |
1648 | EXPORT_SYMBOL(sas_rphy_delete); | |
1649 | ||
87c8331f DW |
1650 | /** |
1651 | * sas_rphy_unlink - unlink SAS remote PHY | |
1652 | * @rphy: SAS remote phy to unlink from its parent port | |
1653 | * | |
1654 | * Removes port reference to an rphy | |
1655 | */ | |
1656 | void sas_rphy_unlink(struct sas_rphy *rphy) | |
1657 | { | |
1658 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); | |
1659 | ||
1660 | parent->rphy = NULL; | |
1661 | } | |
1662 | EXPORT_SYMBOL(sas_rphy_unlink); | |
1663 | ||
6f63caae | 1664 | /** |
eb44820c | 1665 | * sas_rphy_remove - remove SAS remote PHY |
6f63caae DW |
1666 | * @rphy: SAS remote phy to remove |
1667 | * | |
1668 | * Removes the specified SAS remote PHY. | |
1669 | */ | |
1670 | void | |
1671 | sas_rphy_remove(struct sas_rphy *rphy) | |
c7ebbbce CH |
1672 | { |
1673 | struct device *dev = &rphy->dev; | |
c7ebbbce | 1674 | |
d4054239 CH |
1675 | switch (rphy->identify.device_type) { |
1676 | case SAS_END_DEVICE: | |
1677 | scsi_remove_target(dev); | |
1678 | break; | |
1679 | case SAS_EDGE_EXPANDER_DEVICE: | |
1680 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1681 | sas_remove_children(dev); |
d4054239 CH |
1682 | break; |
1683 | default: | |
1684 | break; | |
1685 | } | |
c7ebbbce | 1686 | |
87c8331f | 1687 | sas_rphy_unlink(rphy); |
6aa6caff | 1688 | sas_bsg_remove(NULL, rphy); |
fe8b2304 CH |
1689 | transport_remove_device(dev); |
1690 | device_del(dev); | |
c7ebbbce | 1691 | } |
6f63caae | 1692 | EXPORT_SYMBOL(sas_rphy_remove); |
c7ebbbce CH |
1693 | |
1694 | /** | |
eb44820c | 1695 | * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY |
c7ebbbce CH |
1696 | * @dev: device to check |
1697 | * | |
1698 | * Returns: | |
1699 | * %1 if the device represents a SAS remote PHY, %0 else | |
1700 | */ | |
1701 | int scsi_is_sas_rphy(const struct device *dev) | |
1702 | { | |
2f8600df JB |
1703 | return dev->release == sas_end_device_release || |
1704 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1705 | } |
1706 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1707 | ||
1708 | ||
1709 | /* | |
1710 | * SCSI scan helper | |
1711 | */ | |
1712 | ||
e02f3f59 | 1713 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
9cb78c16 | 1714 | uint id, u64 lun) |
c7ebbbce CH |
1715 | { |
1716 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1717 | struct sas_rphy *rphy; | |
c7ebbbce | 1718 | |
e02f3f59 | 1719 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1720 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1721 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1722 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1723 | continue; |
1724 | ||
e8bf3941 | 1725 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1726 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
e8bf3941 | 1727 | scsi_scan_target(&rphy->dev, 0, |
e02f3f59 CH |
1728 | rphy->scsi_target_id, lun, 1); |
1729 | } | |
c7ebbbce | 1730 | } |
e02f3f59 | 1731 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1732 | |
e02f3f59 | 1733 | return 0; |
c7ebbbce CH |
1734 | } |
1735 | ||
1736 | ||
1737 | /* | |
1738 | * Setup / Teardown code | |
1739 | */ | |
1740 | ||
d24e1eeb | 1741 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
ee959b00 | 1742 | i->private_##attrb[count] = dev_attr_##field; \ |
42ab0360 | 1743 | i->private_##attrb[count].attr.mode = perm; \ |
42ab0360 JB |
1744 | i->attrb[count] = &i->private_##attrb[count]; \ |
1745 | if (test) \ | |
1746 | count++ | |
1747 | ||
d24e1eeb | 1748 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
ee959b00 | 1749 | i->private_##attrb[count] = dev_attr_##field; \ |
d24e1eeb JB |
1750 | i->private_##attrb[count].attr.mode = perm; \ |
1751 | if (ro_test) { \ | |
1752 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1753 | i->private_##attrb[count].store = NULL; \ | |
1754 | } \ | |
1755 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1756 | if (test) \ | |
1757 | count++ | |
42ab0360 JB |
1758 | |
1759 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1760 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1761 | |
dd9fbb52 | 1762 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1763 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1764 | |
65c92b09 | 1765 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1766 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1767 | |
d24e1eeb JB |
1768 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1769 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1770 | !i->f->set_phy_speed, S_IRUGO) | |
1771 | ||
acbf167d DW |
1772 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
1773 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1774 | !i->f->func, S_IRUGO) | |
1775 | ||
65c92b09 JB |
1776 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1777 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1778 | ||
1779 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1780 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1781 | |
65c92b09 | 1782 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
fe3b5bfe | 1783 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
07ba3a95 | 1784 | |
65c92b09 | 1785 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
fe3b5bfe | 1786 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
dd9fbb52 | 1787 | |
42ab0360 JB |
1788 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1789 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1790 | |
79cb1819 JB |
1791 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1792 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1793 | ||
c7ebbbce | 1794 | /** |
eb44820c | 1795 | * sas_attach_transport - instantiate SAS transport template |
c7ebbbce CH |
1796 | * @ft: SAS transport class function template |
1797 | */ | |
1798 | struct scsi_transport_template * | |
1799 | sas_attach_transport(struct sas_function_template *ft) | |
1800 | { | |
1801 | struct sas_internal *i; | |
1802 | int count; | |
1803 | ||
24669f75 | 1804 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1805 | if (!i) |
1806 | return NULL; | |
c7ebbbce | 1807 | |
e02f3f59 | 1808 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1809 | |
1810 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1811 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1812 | i->t.host_attrs.ac.match = sas_host_match; | |
1813 | transport_container_register(&i->t.host_attrs); | |
1814 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1815 | ||
1816 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1817 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1818 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1819 | transport_container_register(&i->phy_attr_cont); | |
1820 | ||
65c92b09 JB |
1821 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1822 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1823 | i->port_attr_cont.ac.match = sas_port_match; | |
1824 | transport_container_register(&i->port_attr_cont); | |
1825 | ||
c7ebbbce CH |
1826 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1827 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1828 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1829 | transport_container_register(&i->rphy_attr_cont); | |
1830 | ||
42ab0360 JB |
1831 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1832 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1833 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1834 | transport_container_register(&i->end_dev_attr_cont); | |
1835 | ||
79cb1819 JB |
1836 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1837 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1838 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1839 | transport_container_register(&i->expander_attr_cont); | |
1840 | ||
c7ebbbce CH |
1841 | i->f = ft; |
1842 | ||
c7ebbbce | 1843 | count = 0; |
65c92b09 JB |
1844 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1845 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1846 | SETUP_PHY_ATTRIBUTE(device_type); | |
1847 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1848 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1849 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1850 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1851 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1852 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1853 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1854 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1855 | |
1856 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1857 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1858 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1859 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1860 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1861 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1862 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1863 | i->phy_attrs[count] = NULL; |
1864 | ||
65c92b09 JB |
1865 | count = 0; |
1866 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1867 | i->port_attrs[count] = NULL; | |
1868 | ||
c7ebbbce CH |
1869 | count = 0; |
1870 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1871 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1872 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1873 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1874 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
dd9fbb52 JB |
1875 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1876 | get_enclosure_identifier); | |
1877 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1878 | get_bay_identifier); | |
c7ebbbce CH |
1879 | i->rphy_attrs[count] = NULL; |
1880 | ||
42ab0360 JB |
1881 | count = 0; |
1882 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1883 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1884 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
0f88009d JB |
1885 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_supported); |
1886 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_enabled); | |
42ab0360 JB |
1887 | i->end_dev_attrs[count] = NULL; |
1888 | ||
79cb1819 JB |
1889 | count = 0; |
1890 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1891 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1892 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1893 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1894 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1895 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1896 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1897 | i->expander_attrs[count] = NULL; | |
1898 | ||
c7ebbbce CH |
1899 | return &i->t; |
1900 | } | |
1901 | EXPORT_SYMBOL(sas_attach_transport); | |
1902 | ||
1903 | /** | |
eb44820c | 1904 | * sas_release_transport - release SAS transport template instance |
c7ebbbce CH |
1905 | * @t: transport template instance |
1906 | */ | |
1907 | void sas_release_transport(struct scsi_transport_template *t) | |
1908 | { | |
1909 | struct sas_internal *i = to_sas_internal(t); | |
1910 | ||
1911 | transport_container_unregister(&i->t.host_attrs); | |
1912 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1913 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1914 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1915 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1916 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1917 | |
1918 | kfree(i); | |
1919 | } | |
1920 | EXPORT_SYMBOL(sas_release_transport); | |
1921 | ||
1922 | static __init int sas_transport_init(void) | |
1923 | { | |
1924 | int error; | |
1925 | ||
1926 | error = transport_class_register(&sas_host_class); | |
1927 | if (error) | |
1928 | goto out; | |
1929 | error = transport_class_register(&sas_phy_class); | |
1930 | if (error) | |
1931 | goto out_unregister_transport; | |
65c92b09 | 1932 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1933 | if (error) |
1934 | goto out_unregister_phy; | |
65c92b09 JB |
1935 | error = transport_class_register(&sas_rphy_class); |
1936 | if (error) | |
1937 | goto out_unregister_port; | |
42ab0360 JB |
1938 | error = transport_class_register(&sas_end_dev_class); |
1939 | if (error) | |
1940 | goto out_unregister_rphy; | |
79cb1819 JB |
1941 | error = transport_class_register(&sas_expander_class); |
1942 | if (error) | |
1943 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1944 | |
1945 | return 0; | |
1946 | ||
79cb1819 JB |
1947 | out_unregister_end_dev: |
1948 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1949 | out_unregister_rphy: |
1950 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1951 | out_unregister_port: |
1952 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1953 | out_unregister_phy: |
1954 | transport_class_unregister(&sas_phy_class); | |
1955 | out_unregister_transport: | |
1956 | transport_class_unregister(&sas_host_class); | |
1957 | out: | |
1958 | return error; | |
1959 | ||
1960 | } | |
1961 | ||
1962 | static void __exit sas_transport_exit(void) | |
1963 | { | |
1964 | transport_class_unregister(&sas_host_class); | |
1965 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1966 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1967 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1968 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1969 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1970 | } |
1971 | ||
1972 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1973 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
1974 | MODULE_LICENSE("GPL"); |
1975 | ||
1976 | module_init(sas_transport_init); | |
1977 | module_exit(sas_transport_exit); |