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> |
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" }, |
c7ebbbce CH |
154 | }; |
155 | sas_bitfield_name_search(linkspeed, sas_linkspeed_names) | |
d24e1eeb | 156 | sas_bitfield_name_set(linkspeed, sas_linkspeed_names) |
c7ebbbce | 157 | |
0f88009d JB |
158 | static struct sas_end_device *sas_sdev_to_rdev(struct scsi_device *sdev) |
159 | { | |
160 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
161 | struct sas_end_device *rdev; | |
162 | ||
163 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
164 | ||
165 | rdev = rphy_to_end_device(rphy); | |
166 | return rdev; | |
167 | } | |
168 | ||
7aa68e80 FT |
169 | static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost, |
170 | struct sas_rphy *rphy) | |
171 | { | |
172 | struct request *req; | |
173 | int ret; | |
174 | int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); | |
175 | ||
7eaceacc | 176 | while ((req = blk_fetch_request(q)) != NULL) { |
7aa68e80 FT |
177 | spin_unlock_irq(q->queue_lock); |
178 | ||
179 | handler = to_sas_internal(shost->transportt)->f->smp_handler; | |
180 | ret = handler(shost, rphy, req); | |
2d507a01 | 181 | req->errors = ret; |
7aa68e80 | 182 | |
93bdcba5 | 183 | blk_end_request_all(req, ret); |
7aa68e80 | 184 | |
93bdcba5 | 185 | spin_lock_irq(q->queue_lock); |
7aa68e80 FT |
186 | } |
187 | } | |
188 | ||
189 | static void sas_host_smp_request(struct request_queue *q) | |
190 | { | |
191 | sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); | |
192 | } | |
193 | ||
194 | static void sas_non_host_smp_request(struct request_queue *q) | |
195 | { | |
196 | struct sas_rphy *rphy = q->queuedata; | |
197 | sas_smp_request(q, rphy_to_shost(rphy), rphy); | |
198 | } | |
199 | ||
93c20a59 FT |
200 | static void sas_host_release(struct device *dev) |
201 | { | |
202 | struct Scsi_Host *shost = dev_to_shost(dev); | |
203 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
204 | struct request_queue *q = sas_host->q; | |
205 | ||
206 | if (q) | |
207 | blk_cleanup_queue(q); | |
208 | } | |
209 | ||
39dca558 | 210 | static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) |
7aa68e80 FT |
211 | { |
212 | struct request_queue *q; | |
213 | int error; | |
39dca558 | 214 | struct device *dev; |
71610f55 | 215 | char namebuf[20]; |
39dca558 | 216 | const char *name; |
93c20a59 | 217 | void (*release)(struct device *); |
7aa68e80 FT |
218 | |
219 | if (!to_sas_internal(shost->transportt)->f->smp_handler) { | |
220 | printk("%s can't handle SMP requests\n", shost->hostt->name); | |
221 | return 0; | |
222 | } | |
223 | ||
39dca558 | 224 | if (rphy) { |
7aa68e80 | 225 | q = blk_init_queue(sas_non_host_smp_request, NULL); |
39dca558 | 226 | dev = &rphy->dev; |
71610f55 | 227 | name = dev_name(dev); |
93c20a59 | 228 | release = NULL; |
39dca558 | 229 | } else { |
7aa68e80 | 230 | q = blk_init_queue(sas_host_smp_request, NULL); |
39dca558 JB |
231 | dev = &shost->shost_gendev; |
232 | snprintf(namebuf, sizeof(namebuf), | |
233 | "sas_host%d", shost->host_no); | |
234 | name = namebuf; | |
93c20a59 | 235 | release = sas_host_release; |
39dca558 | 236 | } |
7aa68e80 FT |
237 | if (!q) |
238 | return -ENOMEM; | |
239 | ||
93c20a59 | 240 | error = bsg_register_queue(q, dev, name, release); |
7aa68e80 FT |
241 | if (error) { |
242 | blk_cleanup_queue(q); | |
243 | return -ENOMEM; | |
244 | } | |
245 | ||
b6aff669 JB |
246 | if (rphy) |
247 | rphy->q = q; | |
248 | else | |
249 | to_sas_host_attrs(shost)->q = q; | |
250 | ||
7aa68e80 FT |
251 | if (rphy) |
252 | q->queuedata = rphy; | |
253 | else | |
254 | q->queuedata = shost; | |
255 | ||
75ad23bc | 256 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); |
7aa68e80 FT |
257 | return 0; |
258 | } | |
259 | ||
b6aff669 JB |
260 | static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy) |
261 | { | |
262 | struct request_queue *q; | |
263 | ||
264 | if (rphy) | |
265 | q = rphy->q; | |
266 | else | |
267 | q = to_sas_host_attrs(shost)->q; | |
268 | ||
269 | if (!q) | |
270 | return; | |
271 | ||
272 | bsg_unregister_queue(q); | |
b6aff669 JB |
273 | } |
274 | ||
c7ebbbce CH |
275 | /* |
276 | * SAS host attributes | |
277 | */ | |
278 | ||
37be6eeb | 279 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 280 | struct device *cdev) |
c7ebbbce CH |
281 | { |
282 | struct Scsi_Host *shost = dev_to_shost(dev); | |
283 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
284 | ||
285 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 286 | mutex_init(&sas_host->lock); |
c7ebbbce | 287 | sas_host->next_target_id = 0; |
79cb1819 | 288 | sas_host->next_expander_id = 0; |
c9fefeb2 | 289 | sas_host->next_port_id = 0; |
7aa68e80 | 290 | |
39dca558 | 291 | if (sas_bsg_initialize(shost, NULL)) |
7aa68e80 FT |
292 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", |
293 | shost->host_no); | |
294 | ||
c7ebbbce CH |
295 | return 0; |
296 | } | |
297 | ||
b6aff669 | 298 | static int sas_host_remove(struct transport_container *tc, struct device *dev, |
ee959b00 | 299 | struct device *cdev) |
b6aff669 JB |
300 | { |
301 | struct Scsi_Host *shost = dev_to_shost(dev); | |
302 | ||
303 | sas_bsg_remove(shost, NULL); | |
304 | ||
305 | return 0; | |
306 | } | |
307 | ||
c7ebbbce | 308 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
b6aff669 | 309 | "sas_host", sas_host_setup, sas_host_remove, NULL); |
c7ebbbce CH |
310 | |
311 | static int sas_host_match(struct attribute_container *cont, | |
312 | struct device *dev) | |
313 | { | |
314 | struct Scsi_Host *shost; | |
315 | struct sas_internal *i; | |
316 | ||
317 | if (!scsi_is_host_device(dev)) | |
318 | return 0; | |
319 | shost = dev_to_shost(dev); | |
320 | ||
321 | if (!shost->transportt) | |
322 | return 0; | |
323 | if (shost->transportt->host_attrs.ac.class != | |
324 | &sas_host_class.class) | |
325 | return 0; | |
326 | ||
327 | i = to_sas_internal(shost->transportt); | |
328 | return &i->t.host_attrs.ac == cont; | |
329 | } | |
330 | ||
331 | static int do_sas_phy_delete(struct device *dev, void *data) | |
332 | { | |
65c92b09 JB |
333 | int pass = (int)(unsigned long)data; |
334 | ||
335 | if (pass == 0 && scsi_is_sas_port(dev)) | |
336 | sas_port_delete(dev_to_sas_port(dev)); | |
337 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
338 | sas_phy_delete(dev_to_phy(dev)); |
339 | return 0; | |
340 | } | |
341 | ||
65c92b09 | 342 | /** |
eb44820c | 343 | * sas_remove_children - tear down a devices SAS data structures |
65c92b09 JB |
344 | * @dev: device belonging to the sas object |
345 | * | |
346 | * Removes all SAS PHYs and remote PHYs for a given object | |
347 | */ | |
348 | void sas_remove_children(struct device *dev) | |
349 | { | |
350 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
351 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
352 | } | |
353 | EXPORT_SYMBOL(sas_remove_children); | |
354 | ||
c7ebbbce | 355 | /** |
eb44820c | 356 | * sas_remove_host - tear down a Scsi_Host's SAS data structures |
c7ebbbce CH |
357 | * @shost: Scsi Host that is torn down |
358 | * | |
359 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. | |
360 | * Must be called just before scsi_remove_host for SAS HBAs. | |
361 | */ | |
362 | void sas_remove_host(struct Scsi_Host *shost) | |
363 | { | |
65c92b09 | 364 | sas_remove_children(&shost->shost_gendev); |
c7ebbbce CH |
365 | } |
366 | EXPORT_SYMBOL(sas_remove_host); | |
367 | ||
0f88009d JB |
368 | /** |
369 | * sas_tlr_supported - checking TLR bit in vpd 0x90 | |
370 | * @sdev: scsi device struct | |
371 | * | |
372 | * Check Transport Layer Retries are supported or not. | |
373 | * If vpd page 0x90 is present, TRL is supported. | |
374 | * | |
375 | */ | |
376 | unsigned int | |
377 | sas_tlr_supported(struct scsi_device *sdev) | |
378 | { | |
379 | const int vpd_len = 32; | |
380 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
381 | char *buffer = kzalloc(vpd_len, GFP_KERNEL); | |
382 | int ret = 0; | |
383 | ||
384 | if (scsi_get_vpd_page(sdev, 0x90, buffer, vpd_len)) | |
385 | goto out; | |
386 | ||
387 | /* | |
388 | * Magic numbers: the VPD Protocol page (0x90) | |
389 | * has a 4 byte header and then one entry per device port | |
390 | * the TLR bit is at offset 8 on each port entry | |
391 | * if we take the first port, that's at total offset 12 | |
392 | */ | |
393 | ret = buffer[12] & 0x01; | |
394 | ||
395 | out: | |
396 | kfree(buffer); | |
397 | rdev->tlr_supported = ret; | |
398 | return ret; | |
399 | ||
400 | } | |
401 | EXPORT_SYMBOL_GPL(sas_tlr_supported); | |
402 | ||
403 | /** | |
404 | * sas_disable_tlr - setting TLR flags | |
405 | * @sdev: scsi device struct | |
406 | * | |
407 | * Seting tlr_enabled flag to 0. | |
408 | * | |
409 | */ | |
410 | void | |
411 | sas_disable_tlr(struct scsi_device *sdev) | |
412 | { | |
413 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
414 | ||
415 | rdev->tlr_enabled = 0; | |
416 | } | |
417 | EXPORT_SYMBOL_GPL(sas_disable_tlr); | |
418 | ||
419 | /** | |
420 | * sas_enable_tlr - setting TLR flags | |
421 | * @sdev: scsi device struct | |
422 | * | |
423 | * Seting tlr_enabled flag 1. | |
424 | * | |
425 | */ | |
426 | void sas_enable_tlr(struct scsi_device *sdev) | |
427 | { | |
428 | unsigned int tlr_supported = 0; | |
429 | tlr_supported = sas_tlr_supported(sdev); | |
430 | ||
431 | if (tlr_supported) { | |
432 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
433 | ||
434 | rdev->tlr_enabled = 1; | |
435 | } | |
436 | ||
437 | return; | |
438 | } | |
439 | EXPORT_SYMBOL_GPL(sas_enable_tlr); | |
440 | ||
441 | unsigned int sas_is_tlr_enabled(struct scsi_device *sdev) | |
442 | { | |
443 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
444 | return rdev->tlr_enabled; | |
445 | } | |
446 | EXPORT_SYMBOL_GPL(sas_is_tlr_enabled); | |
c7ebbbce CH |
447 | |
448 | /* | |
65c92b09 | 449 | * SAS Phy attributes |
c7ebbbce CH |
450 | */ |
451 | ||
452 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
453 | static ssize_t \ | |
ee959b00 TJ |
454 | show_sas_phy_##name(struct device *dev, \ |
455 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 456 | { \ |
ee959b00 | 457 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
458 | \ |
459 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
460 | } | |
461 | ||
462 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
463 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 464 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
465 | |
466 | #define sas_phy_show_protocol(field, name) \ | |
467 | static ssize_t \ | |
ee959b00 TJ |
468 | show_sas_phy_##name(struct device *dev, \ |
469 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 470 | { \ |
ee959b00 | 471 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
472 | \ |
473 | if (!phy->field) \ | |
474 | return snprintf(buf, 20, "none\n"); \ | |
475 | return get_sas_protocol_names(phy->field, buf); \ | |
476 | } | |
477 | ||
478 | #define sas_phy_protocol_attr(field, name) \ | |
479 | sas_phy_show_protocol(field, name) \ | |
ee959b00 | 480 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
481 | |
482 | #define sas_phy_show_linkspeed(field) \ | |
483 | static ssize_t \ | |
ee959b00 TJ |
484 | show_sas_phy_##field(struct device *dev, \ |
485 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 486 | { \ |
ee959b00 | 487 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
488 | \ |
489 | return get_sas_linkspeed_names(phy->field, buf); \ | |
490 | } | |
491 | ||
d24e1eeb JB |
492 | /* Fudge to tell if we're minimum or maximum */ |
493 | #define sas_phy_store_linkspeed(field) \ | |
494 | static ssize_t \ | |
ee959b00 TJ |
495 | store_sas_phy_##field(struct device *dev, \ |
496 | struct device_attribute *attr, \ | |
497 | const char *buf, size_t count) \ | |
d24e1eeb | 498 | { \ |
ee959b00 | 499 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
d24e1eeb JB |
500 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
501 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
502 | u32 value; \ | |
503 | struct sas_phy_linkrates rates = {0}; \ | |
504 | int error; \ | |
505 | \ | |
506 | error = set_sas_linkspeed_names(&value, buf); \ | |
507 | if (error) \ | |
508 | return error; \ | |
509 | rates.field = value; \ | |
510 | error = i->f->set_phy_speed(phy, &rates); \ | |
511 | \ | |
512 | return error ? error : count; \ | |
513 | } | |
514 | ||
515 | #define sas_phy_linkspeed_rw_attr(field) \ | |
516 | sas_phy_show_linkspeed(field) \ | |
517 | sas_phy_store_linkspeed(field) \ | |
ee959b00 | 518 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ |
d24e1eeb JB |
519 | store_sas_phy_##field) |
520 | ||
c7ebbbce CH |
521 | #define sas_phy_linkspeed_attr(field) \ |
522 | sas_phy_show_linkspeed(field) \ | |
ee959b00 | 523 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c7ebbbce | 524 | |
d24e1eeb | 525 | |
c3ee74c4 CH |
526 | #define sas_phy_show_linkerror(field) \ |
527 | static ssize_t \ | |
ee959b00 TJ |
528 | show_sas_phy_##field(struct device *dev, \ |
529 | struct device_attribute *attr, char *buf) \ | |
c3ee74c4 | 530 | { \ |
ee959b00 | 531 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c3ee74c4 CH |
532 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
533 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
534 | int error; \ | |
535 | \ | |
dd9fbb52 | 536 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
537 | if (error) \ |
538 | return error; \ | |
539 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
540 | } | |
541 | ||
542 | #define sas_phy_linkerror_attr(field) \ | |
543 | sas_phy_show_linkerror(field) \ | |
ee959b00 | 544 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c3ee74c4 CH |
545 | |
546 | ||
c7ebbbce | 547 | static ssize_t |
ee959b00 TJ |
548 | show_sas_device_type(struct device *dev, |
549 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 550 | { |
ee959b00 | 551 | struct sas_phy *phy = transport_class_to_phy(dev); |
c7ebbbce CH |
552 | |
553 | if (!phy->identify.device_type) | |
554 | return snprintf(buf, 20, "none\n"); | |
555 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
556 | } | |
ee959b00 | 557 | static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
c7ebbbce | 558 | |
ee959b00 | 559 | static ssize_t do_sas_phy_enable(struct device *dev, |
acbf167d DW |
560 | size_t count, int enable) |
561 | { | |
ee959b00 | 562 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
563 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
564 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
565 | int error; | |
566 | ||
567 | error = i->f->phy_enable(phy, enable); | |
568 | if (error) | |
569 | return error; | |
570 | phy->enabled = enable; | |
571 | return count; | |
572 | }; | |
573 | ||
ee959b00 TJ |
574 | static ssize_t |
575 | store_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
576 | const char *buf, size_t count) | |
acbf167d DW |
577 | { |
578 | if (count < 1) | |
579 | return -EINVAL; | |
580 | ||
581 | switch (buf[0]) { | |
582 | case '0': | |
ee959b00 | 583 | do_sas_phy_enable(dev, count, 0); |
acbf167d DW |
584 | break; |
585 | case '1': | |
ee959b00 | 586 | do_sas_phy_enable(dev, count, 1); |
acbf167d DW |
587 | break; |
588 | default: | |
589 | return -EINVAL; | |
590 | } | |
591 | ||
592 | return count; | |
593 | } | |
594 | ||
ee959b00 TJ |
595 | static ssize_t |
596 | show_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
597 | char *buf) | |
acbf167d | 598 | { |
ee959b00 | 599 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
600 | |
601 | return snprintf(buf, 20, "%d", phy->enabled); | |
602 | } | |
603 | ||
ee959b00 | 604 | static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, |
acbf167d DW |
605 | store_sas_phy_enable); |
606 | ||
ee959b00 TJ |
607 | static ssize_t |
608 | do_sas_phy_reset(struct device *dev, size_t count, int hard_reset) | |
07ba3a95 | 609 | { |
ee959b00 | 610 | struct sas_phy *phy = transport_class_to_phy(dev); |
07ba3a95 CH |
611 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
612 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
613 | int error; | |
614 | ||
07ba3a95 CH |
615 | error = i->f->phy_reset(phy, hard_reset); |
616 | if (error) | |
617 | return error; | |
16d3db1b | 618 | phy->enabled = 1; |
07ba3a95 CH |
619 | return count; |
620 | }; | |
621 | ||
ee959b00 TJ |
622 | static ssize_t |
623 | store_sas_link_reset(struct device *dev, struct device_attribute *attr, | |
624 | const char *buf, size_t count) | |
07ba3a95 | 625 | { |
ee959b00 | 626 | return do_sas_phy_reset(dev, count, 0); |
07ba3a95 | 627 | } |
ee959b00 | 628 | static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); |
07ba3a95 | 629 | |
ee959b00 TJ |
630 | static ssize_t |
631 | store_sas_hard_reset(struct device *dev, struct device_attribute *attr, | |
632 | const char *buf, size_t count) | |
07ba3a95 | 633 | { |
ee959b00 | 634 | return do_sas_phy_reset(dev, count, 1); |
07ba3a95 | 635 | } |
ee959b00 | 636 | static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); |
07ba3a95 | 637 | |
c7ebbbce CH |
638 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
639 | initiator_port_protocols); | |
640 | sas_phy_protocol_attr(identify.target_port_protocols, | |
641 | target_port_protocols); | |
642 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
643 | unsigned long long); | |
644 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 645 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
646 | sas_phy_linkspeed_attr(negotiated_linkrate); |
647 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 648 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 649 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 650 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
651 | sas_phy_linkerror_attr(invalid_dword_count); |
652 | sas_phy_linkerror_attr(running_disparity_error_count); | |
653 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
654 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce | 655 | |
0b3e09da DW |
656 | static int sas_phy_setup(struct transport_container *tc, struct device *dev, |
657 | struct device *cdev) | |
658 | { | |
659 | struct sas_phy *phy = dev_to_phy(dev); | |
660 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
661 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
662 | ||
663 | if (i->f->phy_setup) | |
664 | i->f->phy_setup(phy); | |
665 | ||
666 | return 0; | |
667 | } | |
c7ebbbce CH |
668 | |
669 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
0b3e09da | 670 | "sas_phy", sas_phy_setup, NULL, NULL); |
c7ebbbce CH |
671 | |
672 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
673 | { | |
674 | struct Scsi_Host *shost; | |
675 | struct sas_internal *i; | |
676 | ||
677 | if (!scsi_is_sas_phy(dev)) | |
678 | return 0; | |
679 | shost = dev_to_shost(dev->parent); | |
680 | ||
681 | if (!shost->transportt) | |
682 | return 0; | |
683 | if (shost->transportt->host_attrs.ac.class != | |
684 | &sas_host_class.class) | |
685 | return 0; | |
686 | ||
687 | i = to_sas_internal(shost->transportt); | |
688 | return &i->phy_attr_cont.ac == cont; | |
689 | } | |
690 | ||
691 | static void sas_phy_release(struct device *dev) | |
692 | { | |
693 | struct sas_phy *phy = dev_to_phy(dev); | |
0b3e09da DW |
694 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
695 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
c7ebbbce | 696 | |
0b3e09da DW |
697 | if (i->f->phy_release) |
698 | i->f->phy_release(phy); | |
c7ebbbce CH |
699 | put_device(dev->parent); |
700 | kfree(phy); | |
701 | } | |
702 | ||
703 | /** | |
eb44820c | 704 | * sas_phy_alloc - allocates and initialize a SAS PHY structure |
c7ebbbce | 705 | * @parent: Parent device |
d99ca418 | 706 | * @number: Phy index |
c7ebbbce CH |
707 | * |
708 | * Allocates an SAS PHY structure. It will be added in the device tree | |
709 | * below the device specified by @parent, which has to be either a Scsi_Host | |
710 | * or sas_rphy. | |
711 | * | |
712 | * Returns: | |
713 | * SAS PHY allocated or %NULL if the allocation failed. | |
714 | */ | |
715 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
716 | { | |
717 | struct Scsi_Host *shost = dev_to_shost(parent); | |
718 | struct sas_phy *phy; | |
719 | ||
24669f75 | 720 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
721 | if (!phy) |
722 | return NULL; | |
c7ebbbce | 723 | |
c7ebbbce | 724 | phy->number = number; |
acbf167d | 725 | phy->enabled = 1; |
c7ebbbce CH |
726 | |
727 | device_initialize(&phy->dev); | |
728 | phy->dev.parent = get_device(parent); | |
729 | phy->dev.release = sas_phy_release; | |
65c92b09 | 730 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
731 | if (scsi_is_sas_expander_device(parent)) { |
732 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 | 733 | dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
734 | rphy->scsi_target_id, number); |
735 | } else | |
71610f55 | 736 | dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number); |
c7ebbbce CH |
737 | |
738 | transport_setup_device(&phy->dev); | |
739 | ||
740 | return phy; | |
741 | } | |
742 | EXPORT_SYMBOL(sas_phy_alloc); | |
743 | ||
744 | /** | |
eb44820c | 745 | * sas_phy_add - add a SAS PHY to the device hierarchy |
c7ebbbce CH |
746 | * @phy: The PHY to be added |
747 | * | |
748 | * Publishes a SAS PHY to the rest of the system. | |
749 | */ | |
750 | int sas_phy_add(struct sas_phy *phy) | |
751 | { | |
752 | int error; | |
753 | ||
754 | error = device_add(&phy->dev); | |
755 | if (!error) { | |
756 | transport_add_device(&phy->dev); | |
757 | transport_configure_device(&phy->dev); | |
758 | } | |
759 | ||
760 | return error; | |
761 | } | |
762 | EXPORT_SYMBOL(sas_phy_add); | |
763 | ||
764 | /** | |
eb44820c | 765 | * sas_phy_free - free a SAS PHY |
c7ebbbce CH |
766 | * @phy: SAS PHY to free |
767 | * | |
768 | * Frees the specified SAS PHY. | |
769 | * | |
770 | * Note: | |
771 | * This function must only be called on a PHY that has not | |
af901ca1 | 772 | * successfully been added using sas_phy_add(). |
c7ebbbce CH |
773 | */ |
774 | void sas_phy_free(struct sas_phy *phy) | |
775 | { | |
776 | transport_destroy_device(&phy->dev); | |
92aab646 | 777 | put_device(&phy->dev); |
c7ebbbce CH |
778 | } |
779 | EXPORT_SYMBOL(sas_phy_free); | |
780 | ||
781 | /** | |
eb44820c | 782 | * sas_phy_delete - remove SAS PHY |
c7ebbbce CH |
783 | * @phy: SAS PHY to remove |
784 | * | |
785 | * Removes the specified SAS PHY. If the SAS PHY has an | |
786 | * associated remote PHY it is removed before. | |
787 | */ | |
788 | void | |
789 | sas_phy_delete(struct sas_phy *phy) | |
790 | { | |
791 | struct device *dev = &phy->dev; | |
792 | ||
65c92b09 JB |
793 | /* this happens if the phy is still part of a port when deleted */ |
794 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
795 | |
796 | transport_remove_device(dev); | |
797 | device_del(dev); | |
798 | transport_destroy_device(dev); | |
92aab646 | 799 | put_device(dev); |
c7ebbbce CH |
800 | } |
801 | EXPORT_SYMBOL(sas_phy_delete); | |
802 | ||
803 | /** | |
eb44820c | 804 | * scsi_is_sas_phy - check if a struct device represents a SAS PHY |
c7ebbbce CH |
805 | * @dev: device to check |
806 | * | |
807 | * Returns: | |
808 | * %1 if the device represents a SAS PHY, %0 else | |
809 | */ | |
810 | int scsi_is_sas_phy(const struct device *dev) | |
811 | { | |
812 | return dev->release == sas_phy_release; | |
813 | } | |
814 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
815 | ||
65c92b09 JB |
816 | /* |
817 | * SAS Port attributes | |
818 | */ | |
819 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
820 | static ssize_t \ | |
ee959b00 TJ |
821 | show_sas_port_##name(struct device *dev, \ |
822 | struct device_attribute *attr, char *buf) \ | |
65c92b09 | 823 | { \ |
ee959b00 | 824 | struct sas_port *port = transport_class_to_sas_port(dev); \ |
65c92b09 JB |
825 | \ |
826 | return snprintf(buf, 20, format_string, cast port->field); \ | |
827 | } | |
828 | ||
829 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
830 | sas_port_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 831 | static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) |
65c92b09 JB |
832 | |
833 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
834 | ||
835 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
836 | "sas_port", NULL, NULL, NULL); | |
837 | ||
838 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
839 | { | |
840 | struct Scsi_Host *shost; | |
841 | struct sas_internal *i; | |
842 | ||
843 | if (!scsi_is_sas_port(dev)) | |
844 | return 0; | |
845 | shost = dev_to_shost(dev->parent); | |
846 | ||
847 | if (!shost->transportt) | |
848 | return 0; | |
849 | if (shost->transportt->host_attrs.ac.class != | |
850 | &sas_host_class.class) | |
851 | return 0; | |
852 | ||
853 | i = to_sas_internal(shost->transportt); | |
854 | return &i->port_attr_cont.ac == cont; | |
855 | } | |
856 | ||
857 | ||
858 | static void sas_port_release(struct device *dev) | |
859 | { | |
860 | struct sas_port *port = dev_to_sas_port(dev); | |
861 | ||
862 | BUG_ON(!list_empty(&port->phy_list)); | |
863 | ||
864 | put_device(dev->parent); | |
865 | kfree(port); | |
866 | } | |
867 | ||
868 | static void sas_port_create_link(struct sas_port *port, | |
869 | struct sas_phy *phy) | |
870 | { | |
21434966 DW |
871 | int res; |
872 | ||
873 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
71610f55 | 874 | dev_name(&phy->dev)); |
21434966 DW |
875 | if (res) |
876 | goto err; | |
877 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
878 | if (res) | |
879 | goto err; | |
880 | return; | |
881 | err: | |
882 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
cadbd4a5 | 883 | __func__, res); |
65c92b09 JB |
884 | } |
885 | ||
886 | static void sas_port_delete_link(struct sas_port *port, | |
887 | struct sas_phy *phy) | |
888 | { | |
71610f55 | 889 | sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev)); |
65c92b09 JB |
890 | sysfs_remove_link(&phy->dev.kobj, "port"); |
891 | } | |
892 | ||
893 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
894 | * | |
895 | * @parent: parent device | |
896 | * @port_id: port number | |
897 | * | |
898 | * Allocates a SAS port structure. It will be added to the device tree | |
899 | * below the device specified by @parent which must be either a Scsi_Host | |
900 | * or a sas_expander_device. | |
901 | * | |
902 | * Returns %NULL on error | |
903 | */ | |
904 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
905 | { | |
906 | struct Scsi_Host *shost = dev_to_shost(parent); | |
907 | struct sas_port *port; | |
908 | ||
909 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
910 | if (!port) | |
911 | return NULL; | |
912 | ||
913 | port->port_identifier = port_id; | |
914 | ||
915 | device_initialize(&port->dev); | |
916 | ||
917 | port->dev.parent = get_device(parent); | |
918 | port->dev.release = sas_port_release; | |
919 | ||
920 | mutex_init(&port->phy_list_mutex); | |
921 | INIT_LIST_HEAD(&port->phy_list); | |
922 | ||
923 | if (scsi_is_sas_expander_device(parent)) { | |
924 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 KS |
925 | dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no, |
926 | rphy->scsi_target_id, port->port_identifier); | |
65c92b09 | 927 | } else |
71610f55 KS |
928 | dev_set_name(&port->dev, "port-%d:%d", shost->host_no, |
929 | port->port_identifier); | |
65c92b09 JB |
930 | |
931 | transport_setup_device(&port->dev); | |
932 | ||
933 | return port; | |
934 | } | |
935 | EXPORT_SYMBOL(sas_port_alloc); | |
936 | ||
c9fefeb2 JB |
937 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
938 | * | |
939 | * @parent: parent device | |
940 | * | |
941 | * Allocates a SAS port structure and a number to go with it. This | |
942 | * interface is really for adapters where the port number has no | |
943 | * meansing, so the sas class should manage them. It will be added to | |
944 | * the device tree below the device specified by @parent which must be | |
945 | * either a Scsi_Host or a sas_expander_device. | |
946 | * | |
947 | * Returns %NULL on error | |
948 | */ | |
949 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
950 | { | |
951 | int index; | |
952 | struct Scsi_Host *shost = dev_to_shost(parent); | |
953 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
954 | ||
955 | /* FIXME: use idr for this eventually */ | |
956 | mutex_lock(&sas_host->lock); | |
957 | if (scsi_is_sas_expander_device(parent)) { | |
958 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
959 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
960 | ||
961 | index = exp->next_port_id++; | |
962 | } else | |
963 | index = sas_host->next_port_id++; | |
964 | mutex_unlock(&sas_host->lock); | |
965 | return sas_port_alloc(parent, index); | |
966 | } | |
967 | EXPORT_SYMBOL(sas_port_alloc_num); | |
968 | ||
65c92b09 JB |
969 | /** |
970 | * sas_port_add - add a SAS port to the device hierarchy | |
65c92b09 JB |
971 | * @port: port to be added |
972 | * | |
973 | * publishes a port to the rest of the system | |
974 | */ | |
975 | int sas_port_add(struct sas_port *port) | |
976 | { | |
977 | int error; | |
978 | ||
979 | /* No phys should be added until this is made visible */ | |
980 | BUG_ON(!list_empty(&port->phy_list)); | |
981 | ||
982 | error = device_add(&port->dev); | |
983 | ||
984 | if (error) | |
985 | return error; | |
986 | ||
987 | transport_add_device(&port->dev); | |
988 | transport_configure_device(&port->dev); | |
989 | ||
990 | return 0; | |
991 | } | |
992 | EXPORT_SYMBOL(sas_port_add); | |
993 | ||
994 | /** | |
eb44820c | 995 | * sas_port_free - free a SAS PORT |
65c92b09 JB |
996 | * @port: SAS PORT to free |
997 | * | |
998 | * Frees the specified SAS PORT. | |
999 | * | |
1000 | * Note: | |
1001 | * This function must only be called on a PORT that has not | |
af901ca1 | 1002 | * successfully been added using sas_port_add(). |
65c92b09 JB |
1003 | */ |
1004 | void sas_port_free(struct sas_port *port) | |
1005 | { | |
1006 | transport_destroy_device(&port->dev); | |
1007 | put_device(&port->dev); | |
1008 | } | |
1009 | EXPORT_SYMBOL(sas_port_free); | |
1010 | ||
1011 | /** | |
eb44820c | 1012 | * sas_port_delete - remove SAS PORT |
65c92b09 JB |
1013 | * @port: SAS PORT to remove |
1014 | * | |
1015 | * Removes the specified SAS PORT. If the SAS PORT has an | |
1016 | * associated phys, unlink them from the port as well. | |
1017 | */ | |
1018 | void sas_port_delete(struct sas_port *port) | |
1019 | { | |
1020 | struct device *dev = &port->dev; | |
1021 | struct sas_phy *phy, *tmp_phy; | |
1022 | ||
1023 | if (port->rphy) { | |
1024 | sas_rphy_delete(port->rphy); | |
1025 | port->rphy = NULL; | |
1026 | } | |
1027 | ||
1028 | mutex_lock(&port->phy_list_mutex); | |
1029 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
1030 | port_siblings) { | |
1031 | sas_port_delete_link(port, phy); | |
1032 | list_del_init(&phy->port_siblings); | |
1033 | } | |
1034 | mutex_unlock(&port->phy_list_mutex); | |
1035 | ||
a0e1b6ef JB |
1036 | if (port->is_backlink) { |
1037 | struct device *parent = port->dev.parent; | |
1038 | ||
71610f55 | 1039 | sysfs_remove_link(&port->dev.kobj, dev_name(parent)); |
a0e1b6ef JB |
1040 | port->is_backlink = 0; |
1041 | } | |
1042 | ||
65c92b09 JB |
1043 | transport_remove_device(dev); |
1044 | device_del(dev); | |
1045 | transport_destroy_device(dev); | |
1046 | put_device(dev); | |
1047 | } | |
1048 | EXPORT_SYMBOL(sas_port_delete); | |
1049 | ||
1050 | /** | |
eb44820c | 1051 | * scsi_is_sas_port - check if a struct device represents a SAS port |
65c92b09 JB |
1052 | * @dev: device to check |
1053 | * | |
1054 | * Returns: | |
1055 | * %1 if the device represents a SAS Port, %0 else | |
1056 | */ | |
1057 | int scsi_is_sas_port(const struct device *dev) | |
1058 | { | |
1059 | return dev->release == sas_port_release; | |
1060 | } | |
1061 | EXPORT_SYMBOL(scsi_is_sas_port); | |
1062 | ||
f41a0c44 DW |
1063 | /** |
1064 | * sas_port_get_phy - try to take a reference on a port member | |
1065 | * @port: port to check | |
1066 | */ | |
1067 | struct sas_phy *sas_port_get_phy(struct sas_port *port) | |
1068 | { | |
1069 | struct sas_phy *phy; | |
1070 | ||
1071 | mutex_lock(&port->phy_list_mutex); | |
1072 | if (list_empty(&port->phy_list)) | |
1073 | phy = NULL; | |
1074 | else { | |
1075 | struct list_head *ent = port->phy_list.next; | |
1076 | ||
1077 | phy = list_entry(ent, typeof(*phy), port_siblings); | |
1078 | get_device(&phy->dev); | |
1079 | } | |
1080 | mutex_unlock(&port->phy_list_mutex); | |
1081 | ||
1082 | return phy; | |
1083 | } | |
1084 | EXPORT_SYMBOL(sas_port_get_phy); | |
1085 | ||
65c92b09 JB |
1086 | /** |
1087 | * sas_port_add_phy - add another phy to a port to form a wide port | |
1088 | * @port: port to add the phy to | |
1089 | * @phy: phy to add | |
1090 | * | |
1091 | * When a port is initially created, it is empty (has no phys). All | |
1092 | * ports must have at least one phy to operated, and all wide ports | |
1093 | * must have at least two. The current code makes no difference | |
1094 | * between ports and wide ports, but the only object that can be | |
1095 | * connected to a remote device is a port, so ports must be formed on | |
1096 | * all devices with phys if they're connected to anything. | |
1097 | */ | |
1098 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
1099 | { | |
1100 | mutex_lock(&port->phy_list_mutex); | |
1101 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
1102 | /* make sure we're already on this port */ | |
1103 | struct sas_phy *tmp; | |
1104 | ||
1105 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
1106 | if (tmp == phy) | |
1107 | break; | |
1108 | /* If this trips, you added a phy that was already | |
1109 | * part of a different port */ | |
1110 | if (unlikely(tmp != phy)) { | |
71610f55 KS |
1111 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", |
1112 | dev_name(&phy->dev)); | |
65c92b09 JB |
1113 | BUG(); |
1114 | } | |
1115 | } else { | |
1116 | sas_port_create_link(port, phy); | |
1117 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
1118 | port->num_phys++; | |
1119 | } | |
1120 | mutex_unlock(&port->phy_list_mutex); | |
1121 | } | |
1122 | EXPORT_SYMBOL(sas_port_add_phy); | |
1123 | ||
1124 | /** | |
1125 | * sas_port_delete_phy - remove a phy from a port or wide port | |
1126 | * @port: port to remove the phy from | |
1127 | * @phy: phy to remove | |
1128 | * | |
1129 | * This operation is used for tearing down ports again. It must be | |
1130 | * done to every port or wide port before calling sas_port_delete. | |
1131 | */ | |
1132 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
1133 | { | |
1134 | mutex_lock(&port->phy_list_mutex); | |
1135 | sas_port_delete_link(port, phy); | |
1136 | list_del_init(&phy->port_siblings); | |
1137 | port->num_phys--; | |
1138 | mutex_unlock(&port->phy_list_mutex); | |
1139 | } | |
1140 | EXPORT_SYMBOL(sas_port_delete_phy); | |
1141 | ||
a0e1b6ef JB |
1142 | void sas_port_mark_backlink(struct sas_port *port) |
1143 | { | |
21434966 | 1144 | int res; |
a0e1b6ef JB |
1145 | struct device *parent = port->dev.parent->parent->parent; |
1146 | ||
1147 | if (port->is_backlink) | |
1148 | return; | |
1149 | port->is_backlink = 1; | |
21434966 | 1150 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
71610f55 | 1151 | dev_name(parent)); |
21434966 DW |
1152 | if (res) |
1153 | goto err; | |
1154 | return; | |
1155 | err: | |
1156 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
cadbd4a5 | 1157 | __func__, res); |
a0e1b6ef JB |
1158 | |
1159 | } | |
1160 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
1161 | ||
c7ebbbce CH |
1162 | /* |
1163 | * SAS remote PHY attributes. | |
1164 | */ | |
1165 | ||
1166 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
1167 | static ssize_t \ | |
ee959b00 TJ |
1168 | show_sas_rphy_##name(struct device *dev, \ |
1169 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1170 | { \ |
ee959b00 | 1171 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1172 | \ |
1173 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
1174 | } | |
1175 | ||
1176 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
1177 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1178 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1179 | show_sas_rphy_##name, NULL) |
1180 | ||
1181 | #define sas_rphy_show_protocol(field, name) \ | |
1182 | static ssize_t \ | |
ee959b00 TJ |
1183 | show_sas_rphy_##name(struct device *dev, \ |
1184 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1185 | { \ |
ee959b00 | 1186 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1187 | \ |
1188 | if (!rphy->field) \ | |
1189 | return snprintf(buf, 20, "none\n"); \ | |
1190 | return get_sas_protocol_names(rphy->field, buf); \ | |
1191 | } | |
1192 | ||
1193 | #define sas_rphy_protocol_attr(field, name) \ | |
1194 | sas_rphy_show_protocol(field, name) \ | |
ee959b00 | 1195 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1196 | show_sas_rphy_##name, NULL) |
1197 | ||
1198 | static ssize_t | |
ee959b00 TJ |
1199 | show_sas_rphy_device_type(struct device *dev, |
1200 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 1201 | { |
ee959b00 | 1202 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
c7ebbbce CH |
1203 | |
1204 | if (!rphy->identify.device_type) | |
1205 | return snprintf(buf, 20, "none\n"); | |
1206 | return get_sas_device_type_names( | |
1207 | rphy->identify.device_type, buf); | |
1208 | } | |
1209 | ||
ee959b00 | 1210 | static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO, |
c7ebbbce CH |
1211 | show_sas_rphy_device_type, NULL); |
1212 | ||
a0125641 | 1213 | static ssize_t |
ee959b00 TJ |
1214 | show_sas_rphy_enclosure_identifier(struct device *dev, |
1215 | struct device_attribute *attr, char *buf) | |
a0125641 | 1216 | { |
ee959b00 | 1217 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1218 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1219 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1220 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1221 | u64 identifier; | |
1222 | int error; | |
1223 | ||
1224 | /* | |
1225 | * Only devices behind an expander are supported, because the | |
1226 | * enclosure identifier is a SMP feature. | |
1227 | */ | |
f4ad7b58 | 1228 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1229 | return -EINVAL; |
1230 | ||
1231 | error = i->f->get_enclosure_identifier(rphy, &identifier); | |
1232 | if (error) | |
1233 | return error; | |
1234 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
1235 | } | |
1236 | ||
ee959b00 | 1237 | static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, |
a0125641 CH |
1238 | show_sas_rphy_enclosure_identifier, NULL); |
1239 | ||
1240 | static ssize_t | |
ee959b00 TJ |
1241 | show_sas_rphy_bay_identifier(struct device *dev, |
1242 | struct device_attribute *attr, char *buf) | |
a0125641 | 1243 | { |
ee959b00 | 1244 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1245 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1246 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1247 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1248 | int val; | |
1249 | ||
f4ad7b58 | 1250 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1251 | return -EINVAL; |
1252 | ||
1253 | val = i->f->get_bay_identifier(rphy); | |
1254 | if (val < 0) | |
1255 | return val; | |
1256 | return sprintf(buf, "%d\n", val); | |
1257 | } | |
1258 | ||
ee959b00 | 1259 | static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, |
a0125641 CH |
1260 | show_sas_rphy_bay_identifier, NULL); |
1261 | ||
c7ebbbce CH |
1262 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
1263 | initiator_port_protocols); | |
1264 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
1265 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
1266 | unsigned long long); | |
1267 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
1268 | ||
42ab0360 JB |
1269 | /* only need 8 bytes of data plus header (4 or 8) */ |
1270 | #define BUF_SIZE 64 | |
1271 | ||
1272 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1273 | { | |
1274 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
0f88009d | 1275 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); |
42ab0360 JB |
1276 | struct scsi_mode_data mode_data; |
1277 | int res, error; | |
1278 | ||
42ab0360 JB |
1279 | if (!buffer) |
1280 | return -ENOMEM; | |
1281 | ||
1282 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1283 | &mode_data, NULL); | |
1284 | ||
1285 | error = -EINVAL; | |
1286 | if (!scsi_status_is_good(res)) | |
1287 | goto out; | |
1288 | ||
1289 | msdata = buffer + mode_data.header_length + | |
1290 | mode_data.block_descriptor_length; | |
1291 | ||
1292 | if (msdata - buffer > BUF_SIZE - 8) | |
1293 | goto out; | |
1294 | ||
1295 | error = 0; | |
1296 | ||
1297 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1298 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1299 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1300 | ||
1301 | out: | |
1302 | kfree(buffer); | |
1303 | return error; | |
1304 | } | |
1305 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1306 | ||
79cb1819 JB |
1307 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1308 | "sas_end_device", NULL, NULL, NULL); | |
1309 | ||
42ab0360 JB |
1310 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1311 | static ssize_t \ | |
ee959b00 TJ |
1312 | show_sas_end_dev_##name(struct device *dev, \ |
1313 | struct device_attribute *attr, char *buf) \ | |
42ab0360 | 1314 | { \ |
ee959b00 | 1315 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
42ab0360 JB |
1316 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ |
1317 | \ | |
1318 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1319 | } | |
1320 | ||
1321 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1322 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1323 | static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ |
42ab0360 JB |
1324 | show_sas_end_dev_##name, NULL) |
1325 | ||
1326 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1327 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1328 | "%d\n", int); | |
1329 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1330 | "%d\n", int); | |
0f88009d JB |
1331 | sas_end_dev_simple_attr(tlr_supported, tlr_supported, |
1332 | "%d\n", int); | |
1333 | sas_end_dev_simple_attr(tlr_enabled, tlr_enabled, | |
1334 | "%d\n", int); | |
42ab0360 | 1335 | |
79cb1819 JB |
1336 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1337 | "sas_expander", NULL, NULL, NULL); | |
1338 | ||
1339 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1340 | static ssize_t \ | |
ee959b00 TJ |
1341 | show_sas_expander_##name(struct device *dev, \ |
1342 | struct device_attribute *attr, char *buf) \ | |
79cb1819 | 1343 | { \ |
ee959b00 | 1344 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
79cb1819 JB |
1345 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ |
1346 | \ | |
1347 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1348 | } | |
1349 | ||
1350 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1351 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1352 | static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \ |
79cb1819 JB |
1353 | show_sas_expander_##name, NULL) |
1354 | ||
1355 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1356 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1357 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1358 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1359 | "%s\n", char *); | |
1360 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1361 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1362 | unsigned int); | |
1363 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1364 | |
c7ebbbce | 1365 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1366 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1367 | |
1368 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1369 | { | |
1370 | struct Scsi_Host *shost; | |
1371 | struct sas_internal *i; | |
1372 | ||
1373 | if (!scsi_is_sas_rphy(dev)) | |
1374 | return 0; | |
1375 | shost = dev_to_shost(dev->parent->parent); | |
1376 | ||
1377 | if (!shost->transportt) | |
1378 | return 0; | |
1379 | if (shost->transportt->host_attrs.ac.class != | |
1380 | &sas_host_class.class) | |
1381 | return 0; | |
1382 | ||
1383 | i = to_sas_internal(shost->transportt); | |
1384 | return &i->rphy_attr_cont.ac == cont; | |
1385 | } | |
1386 | ||
42ab0360 JB |
1387 | static int sas_end_dev_match(struct attribute_container *cont, |
1388 | struct device *dev) | |
1389 | { | |
1390 | struct Scsi_Host *shost; | |
1391 | struct sas_internal *i; | |
1392 | struct sas_rphy *rphy; | |
1393 | ||
1394 | if (!scsi_is_sas_rphy(dev)) | |
1395 | return 0; | |
1396 | shost = dev_to_shost(dev->parent->parent); | |
1397 | rphy = dev_to_rphy(dev); | |
1398 | ||
1399 | if (!shost->transportt) | |
1400 | return 0; | |
1401 | if (shost->transportt->host_attrs.ac.class != | |
1402 | &sas_host_class.class) | |
1403 | return 0; | |
1404 | ||
1405 | i = to_sas_internal(shost->transportt); | |
1406 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1407 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1408 | } |
1409 | ||
79cb1819 JB |
1410 | static int sas_expander_match(struct attribute_container *cont, |
1411 | struct device *dev) | |
1412 | { | |
1413 | struct Scsi_Host *shost; | |
1414 | struct sas_internal *i; | |
1415 | struct sas_rphy *rphy; | |
1416 | ||
1417 | if (!scsi_is_sas_rphy(dev)) | |
1418 | return 0; | |
1419 | shost = dev_to_shost(dev->parent->parent); | |
1420 | rphy = dev_to_rphy(dev); | |
1421 | ||
1422 | if (!shost->transportt) | |
1423 | return 0; | |
1424 | if (shost->transportt->host_attrs.ac.class != | |
1425 | &sas_host_class.class) | |
1426 | return 0; | |
1427 | ||
1428 | i = to_sas_internal(shost->transportt); | |
1429 | return &i->expander_attr_cont.ac == cont && | |
1430 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1431 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1432 | } |
1433 | ||
2f8600df | 1434 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1435 | { |
1436 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1437 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce | 1438 | |
93c20a59 FT |
1439 | if (rphy->q) |
1440 | blk_cleanup_queue(rphy->q); | |
1441 | ||
c7ebbbce | 1442 | put_device(dev->parent); |
2f8600df | 1443 | kfree(edev); |
c7ebbbce CH |
1444 | } |
1445 | ||
2f8600df | 1446 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1447 | { |
2f8600df JB |
1448 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1449 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1450 | |
93c20a59 FT |
1451 | if (rphy->q) |
1452 | blk_cleanup_queue(rphy->q); | |
1453 | ||
2f8600df JB |
1454 | put_device(dev->parent); |
1455 | kfree(edev); | |
c7ebbbce | 1456 | } |
c7ebbbce | 1457 | |
c5943d36 JB |
1458 | /** |
1459 | * sas_rphy_initialize - common rphy intialization | |
1460 | * @rphy: rphy to initialise | |
1461 | * | |
1462 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1463 | * initialise the common rphy component of each. | |
1464 | */ | |
1465 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1466 | { | |
1467 | INIT_LIST_HEAD(&rphy->list); | |
1468 | } | |
1469 | ||
42ab0360 JB |
1470 | /** |
1471 | * sas_end_device_alloc - allocate an rphy for an end device | |
eb44820c | 1472 | * @parent: which port |
42ab0360 JB |
1473 | * |
1474 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1475 | * | |
1476 | * Returns: | |
1477 | * SAS PHY allocated or %NULL if the allocation failed. | |
1478 | */ | |
65c92b09 | 1479 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1480 | { |
1481 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1482 | struct sas_end_device *rdev; | |
1483 | ||
1484 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1485 | if (!rdev) { | |
42ab0360 JB |
1486 | return NULL; |
1487 | } | |
1488 | ||
1489 | device_initialize(&rdev->rphy.dev); | |
1490 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1491 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1492 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1493 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
71610f55 KS |
1494 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d", |
1495 | shost->host_no, rphy->scsi_target_id, | |
1496 | parent->port_identifier); | |
65c92b09 | 1497 | } else |
71610f55 KS |
1498 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d", |
1499 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1500 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1501 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1502 | transport_setup_device(&rdev->rphy.dev); |
1503 | ||
1504 | return &rdev->rphy; | |
1505 | } | |
1506 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1507 | ||
79cb1819 JB |
1508 | /** |
1509 | * sas_expander_alloc - allocate an rphy for an end device | |
eb44820c RL |
1510 | * @parent: which port |
1511 | * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE | |
79cb1819 JB |
1512 | * |
1513 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1514 | * | |
1515 | * Returns: | |
1516 | * SAS PHY allocated or %NULL if the allocation failed. | |
1517 | */ | |
65c92b09 | 1518 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1519 | enum sas_device_type type) |
1520 | { | |
1521 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1522 | struct sas_expander_device *rdev; | |
1523 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1524 | ||
1525 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1526 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1527 | ||
1528 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1529 | if (!rdev) { | |
79cb1819 JB |
1530 | return NULL; |
1531 | } | |
1532 | ||
1533 | device_initialize(&rdev->rphy.dev); | |
1534 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1535 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1536 | mutex_lock(&sas_host->lock); |
1537 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1538 | mutex_unlock(&sas_host->lock); | |
71610f55 KS |
1539 | dev_set_name(&rdev->rphy.dev, "expander-%d:%d", |
1540 | shost->host_no, rdev->rphy.scsi_target_id); | |
79cb1819 | 1541 | rdev->rphy.identify.device_type = type; |
c5943d36 | 1542 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1543 | transport_setup_device(&rdev->rphy.dev); |
1544 | ||
1545 | return &rdev->rphy; | |
1546 | } | |
1547 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1548 | |
c7ebbbce | 1549 | /** |
eb44820c | 1550 | * sas_rphy_add - add a SAS remote PHY to the device hierarchy |
c7ebbbce CH |
1551 | * @rphy: The remote PHY to be added |
1552 | * | |
1553 | * Publishes a SAS remote PHY to the rest of the system. | |
1554 | */ | |
1555 | int sas_rphy_add(struct sas_rphy *rphy) | |
1556 | { | |
65c92b09 | 1557 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1558 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1559 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1560 | struct sas_identify *identify = &rphy->identify; | |
1561 | int error; | |
1562 | ||
1563 | if (parent->rphy) | |
1564 | return -ENXIO; | |
1565 | parent->rphy = rphy; | |
1566 | ||
1567 | error = device_add(&rphy->dev); | |
1568 | if (error) | |
1569 | return error; | |
1570 | transport_add_device(&rphy->dev); | |
1571 | transport_configure_device(&rphy->dev); | |
39dca558 | 1572 | if (sas_bsg_initialize(shost, rphy)) |
71610f55 | 1573 | printk("fail to a bsg device %s\n", dev_name(&rphy->dev)); |
39dca558 | 1574 | |
c7ebbbce | 1575 | |
e02f3f59 | 1576 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1577 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1578 | if (identify->device_type == SAS_END_DEVICE && | |
1579 | (identify->target_port_protocols & | |
1580 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1581 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1582 | else if (identify->device_type == SAS_END_DEVICE) |
1583 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1584 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1585 | |
79cb1819 JB |
1586 | if (identify->device_type == SAS_END_DEVICE && |
1587 | rphy->scsi_target_id != -1) { | |
2fc62e2a DW |
1588 | int lun; |
1589 | ||
1590 | if (identify->target_port_protocols & SAS_PROTOCOL_SSP) | |
1591 | lun = SCAN_WILD_CARD; | |
1592 | else | |
1593 | lun = 0; | |
1594 | ||
1595 | scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, lun, 0); | |
c7ebbbce CH |
1596 | } |
1597 | ||
1598 | return 0; | |
1599 | } | |
1600 | EXPORT_SYMBOL(sas_rphy_add); | |
1601 | ||
1602 | /** | |
eb44820c RL |
1603 | * sas_rphy_free - free a SAS remote PHY |
1604 | * @rphy: SAS remote PHY to free | |
c7ebbbce CH |
1605 | * |
1606 | * Frees the specified SAS remote PHY. | |
1607 | * | |
1608 | * Note: | |
1609 | * This function must only be called on a remote | |
af901ca1 | 1610 | * PHY that has not successfully been added using |
6f63caae | 1611 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
c7ebbbce CH |
1612 | */ |
1613 | void sas_rphy_free(struct sas_rphy *rphy) | |
1614 | { | |
92aab646 | 1615 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1616 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1617 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1618 | ||
e02f3f59 | 1619 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1620 | list_del(&rphy->list); |
e02f3f59 | 1621 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1622 | |
b6aff669 JB |
1623 | sas_bsg_remove(shost, rphy); |
1624 | ||
92aab646 | 1625 | transport_destroy_device(dev); |
2f8600df | 1626 | |
92aab646 | 1627 | put_device(dev); |
c7ebbbce CH |
1628 | } |
1629 | EXPORT_SYMBOL(sas_rphy_free); | |
1630 | ||
1631 | /** | |
eb44820c | 1632 | * sas_rphy_delete - remove and free SAS remote PHY |
6f63caae | 1633 | * @rphy: SAS remote PHY to remove and free |
c7ebbbce | 1634 | * |
6f63caae | 1635 | * Removes the specified SAS remote PHY and frees it. |
c7ebbbce CH |
1636 | */ |
1637 | void | |
1638 | sas_rphy_delete(struct sas_rphy *rphy) | |
6f63caae DW |
1639 | { |
1640 | sas_rphy_remove(rphy); | |
1641 | sas_rphy_free(rphy); | |
1642 | } | |
1643 | EXPORT_SYMBOL(sas_rphy_delete); | |
1644 | ||
87c8331f DW |
1645 | /** |
1646 | * sas_rphy_unlink - unlink SAS remote PHY | |
1647 | * @rphy: SAS remote phy to unlink from its parent port | |
1648 | * | |
1649 | * Removes port reference to an rphy | |
1650 | */ | |
1651 | void sas_rphy_unlink(struct sas_rphy *rphy) | |
1652 | { | |
1653 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); | |
1654 | ||
1655 | parent->rphy = NULL; | |
1656 | } | |
1657 | EXPORT_SYMBOL(sas_rphy_unlink); | |
1658 | ||
6f63caae | 1659 | /** |
eb44820c | 1660 | * sas_rphy_remove - remove SAS remote PHY |
6f63caae DW |
1661 | * @rphy: SAS remote phy to remove |
1662 | * | |
1663 | * Removes the specified SAS remote PHY. | |
1664 | */ | |
1665 | void | |
1666 | sas_rphy_remove(struct sas_rphy *rphy) | |
c7ebbbce CH |
1667 | { |
1668 | struct device *dev = &rphy->dev; | |
c7ebbbce | 1669 | |
d4054239 CH |
1670 | switch (rphy->identify.device_type) { |
1671 | case SAS_END_DEVICE: | |
1672 | scsi_remove_target(dev); | |
1673 | break; | |
1674 | case SAS_EDGE_EXPANDER_DEVICE: | |
1675 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1676 | sas_remove_children(dev); |
d4054239 CH |
1677 | break; |
1678 | default: | |
1679 | break; | |
1680 | } | |
c7ebbbce | 1681 | |
87c8331f | 1682 | sas_rphy_unlink(rphy); |
fe8b2304 CH |
1683 | transport_remove_device(dev); |
1684 | device_del(dev); | |
c7ebbbce | 1685 | } |
6f63caae | 1686 | EXPORT_SYMBOL(sas_rphy_remove); |
c7ebbbce CH |
1687 | |
1688 | /** | |
eb44820c | 1689 | * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY |
c7ebbbce CH |
1690 | * @dev: device to check |
1691 | * | |
1692 | * Returns: | |
1693 | * %1 if the device represents a SAS remote PHY, %0 else | |
1694 | */ | |
1695 | int scsi_is_sas_rphy(const struct device *dev) | |
1696 | { | |
2f8600df JB |
1697 | return dev->release == sas_end_device_release || |
1698 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1699 | } |
1700 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1701 | ||
1702 | ||
1703 | /* | |
1704 | * SCSI scan helper | |
1705 | */ | |
1706 | ||
e02f3f59 CH |
1707 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
1708 | uint id, uint lun) | |
c7ebbbce CH |
1709 | { |
1710 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1711 | struct sas_rphy *rphy; | |
c7ebbbce | 1712 | |
e02f3f59 | 1713 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1714 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1715 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1716 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1717 | continue; |
1718 | ||
e8bf3941 | 1719 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1720 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
e8bf3941 | 1721 | scsi_scan_target(&rphy->dev, 0, |
e02f3f59 CH |
1722 | rphy->scsi_target_id, lun, 1); |
1723 | } | |
c7ebbbce | 1724 | } |
e02f3f59 | 1725 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1726 | |
e02f3f59 | 1727 | return 0; |
c7ebbbce CH |
1728 | } |
1729 | ||
1730 | ||
1731 | /* | |
1732 | * Setup / Teardown code | |
1733 | */ | |
1734 | ||
d24e1eeb | 1735 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
ee959b00 | 1736 | i->private_##attrb[count] = dev_attr_##field; \ |
42ab0360 | 1737 | i->private_##attrb[count].attr.mode = perm; \ |
42ab0360 JB |
1738 | i->attrb[count] = &i->private_##attrb[count]; \ |
1739 | if (test) \ | |
1740 | count++ | |
1741 | ||
d24e1eeb | 1742 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
ee959b00 | 1743 | i->private_##attrb[count] = dev_attr_##field; \ |
d24e1eeb JB |
1744 | i->private_##attrb[count].attr.mode = perm; \ |
1745 | if (ro_test) { \ | |
1746 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1747 | i->private_##attrb[count].store = NULL; \ | |
1748 | } \ | |
1749 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1750 | if (test) \ | |
1751 | count++ | |
42ab0360 JB |
1752 | |
1753 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1754 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1755 | |
dd9fbb52 | 1756 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1757 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1758 | |
65c92b09 | 1759 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1760 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1761 | |
d24e1eeb JB |
1762 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1763 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1764 | !i->f->set_phy_speed, S_IRUGO) | |
1765 | ||
acbf167d DW |
1766 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
1767 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1768 | !i->f->func, S_IRUGO) | |
1769 | ||
65c92b09 JB |
1770 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1771 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1772 | ||
1773 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1774 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1775 | |
65c92b09 | 1776 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
fe3b5bfe | 1777 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
07ba3a95 | 1778 | |
65c92b09 | 1779 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
fe3b5bfe | 1780 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
dd9fbb52 | 1781 | |
42ab0360 JB |
1782 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1783 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1784 | |
79cb1819 JB |
1785 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1786 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1787 | ||
c7ebbbce | 1788 | /** |
eb44820c | 1789 | * sas_attach_transport - instantiate SAS transport template |
c7ebbbce CH |
1790 | * @ft: SAS transport class function template |
1791 | */ | |
1792 | struct scsi_transport_template * | |
1793 | sas_attach_transport(struct sas_function_template *ft) | |
1794 | { | |
1795 | struct sas_internal *i; | |
1796 | int count; | |
1797 | ||
24669f75 | 1798 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1799 | if (!i) |
1800 | return NULL; | |
c7ebbbce | 1801 | |
e02f3f59 | 1802 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1803 | |
1804 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1805 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1806 | i->t.host_attrs.ac.match = sas_host_match; | |
1807 | transport_container_register(&i->t.host_attrs); | |
1808 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1809 | ||
1810 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1811 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1812 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1813 | transport_container_register(&i->phy_attr_cont); | |
1814 | ||
65c92b09 JB |
1815 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1816 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1817 | i->port_attr_cont.ac.match = sas_port_match; | |
1818 | transport_container_register(&i->port_attr_cont); | |
1819 | ||
c7ebbbce CH |
1820 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1821 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1822 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1823 | transport_container_register(&i->rphy_attr_cont); | |
1824 | ||
42ab0360 JB |
1825 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1826 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1827 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1828 | transport_container_register(&i->end_dev_attr_cont); | |
1829 | ||
79cb1819 JB |
1830 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1831 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1832 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1833 | transport_container_register(&i->expander_attr_cont); | |
1834 | ||
c7ebbbce CH |
1835 | i->f = ft; |
1836 | ||
c7ebbbce | 1837 | count = 0; |
65c92b09 JB |
1838 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1839 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1840 | SETUP_PHY_ATTRIBUTE(device_type); | |
1841 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1842 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1843 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1844 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1845 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1846 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1847 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1848 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1849 | |
1850 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1851 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1852 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1853 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1854 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1855 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1856 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1857 | i->phy_attrs[count] = NULL; |
1858 | ||
65c92b09 JB |
1859 | count = 0; |
1860 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1861 | i->port_attrs[count] = NULL; | |
1862 | ||
c7ebbbce CH |
1863 | count = 0; |
1864 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1865 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1866 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1867 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1868 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
dd9fbb52 JB |
1869 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1870 | get_enclosure_identifier); | |
1871 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1872 | get_bay_identifier); | |
c7ebbbce CH |
1873 | i->rphy_attrs[count] = NULL; |
1874 | ||
42ab0360 JB |
1875 | count = 0; |
1876 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1877 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1878 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
0f88009d JB |
1879 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_supported); |
1880 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_enabled); | |
42ab0360 JB |
1881 | i->end_dev_attrs[count] = NULL; |
1882 | ||
79cb1819 JB |
1883 | count = 0; |
1884 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1885 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1886 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1887 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1888 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1889 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1890 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1891 | i->expander_attrs[count] = NULL; | |
1892 | ||
c7ebbbce CH |
1893 | return &i->t; |
1894 | } | |
1895 | EXPORT_SYMBOL(sas_attach_transport); | |
1896 | ||
1897 | /** | |
eb44820c | 1898 | * sas_release_transport - release SAS transport template instance |
c7ebbbce CH |
1899 | * @t: transport template instance |
1900 | */ | |
1901 | void sas_release_transport(struct scsi_transport_template *t) | |
1902 | { | |
1903 | struct sas_internal *i = to_sas_internal(t); | |
1904 | ||
1905 | transport_container_unregister(&i->t.host_attrs); | |
1906 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1907 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1908 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1909 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1910 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1911 | |
1912 | kfree(i); | |
1913 | } | |
1914 | EXPORT_SYMBOL(sas_release_transport); | |
1915 | ||
1916 | static __init int sas_transport_init(void) | |
1917 | { | |
1918 | int error; | |
1919 | ||
1920 | error = transport_class_register(&sas_host_class); | |
1921 | if (error) | |
1922 | goto out; | |
1923 | error = transport_class_register(&sas_phy_class); | |
1924 | if (error) | |
1925 | goto out_unregister_transport; | |
65c92b09 | 1926 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1927 | if (error) |
1928 | goto out_unregister_phy; | |
65c92b09 JB |
1929 | error = transport_class_register(&sas_rphy_class); |
1930 | if (error) | |
1931 | goto out_unregister_port; | |
42ab0360 JB |
1932 | error = transport_class_register(&sas_end_dev_class); |
1933 | if (error) | |
1934 | goto out_unregister_rphy; | |
79cb1819 JB |
1935 | error = transport_class_register(&sas_expander_class); |
1936 | if (error) | |
1937 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1938 | |
1939 | return 0; | |
1940 | ||
79cb1819 JB |
1941 | out_unregister_end_dev: |
1942 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1943 | out_unregister_rphy: |
1944 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1945 | out_unregister_port: |
1946 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1947 | out_unregister_phy: |
1948 | transport_class_unregister(&sas_phy_class); | |
1949 | out_unregister_transport: | |
1950 | transport_class_unregister(&sas_host_class); | |
1951 | out: | |
1952 | return error; | |
1953 | ||
1954 | } | |
1955 | ||
1956 | static void __exit sas_transport_exit(void) | |
1957 | { | |
1958 | transport_class_unregister(&sas_host_class); | |
1959 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1960 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1961 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1962 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1963 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1964 | } |
1965 | ||
1966 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1967 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
1968 | MODULE_LICENSE("GPL"); |
1969 | ||
1970 | module_init(sas_transport_init); | |
1971 | module_exit(sas_transport_exit); |