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