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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, | |
9 | * and various sysfs attributes to expose these topologies and managment | |
10 | * interfaces to userspace. | |
11 | * | |
12 | * In addition to the basic SCSI core objects this transport class | |
13 | * introduces two additional intermediate objects: The SAS PHY | |
14 | * as represented by struct sas_phy defines an "outgoing" PHY on | |
15 | * a SAS HBA or Expander, and the SAS remote PHY represented by | |
16 | * struct sas_rphy defines an "incoming" PHY on a SAS Expander or | |
17 | * end device. Note that this is purely a software concept, the | |
18 | * underlying hardware for a PHY and a remote PHY is the exactly | |
19 | * the same. | |
20 | * | |
21 | * There is no concept of a SAS port in this code, users can see | |
22 | * what PHYs form a wide port based on the port_identifier attribute, | |
23 | * which is the same for all PHYs in a port. | |
24 | */ | |
25 | ||
26 | #include <linux/init.h> | |
27 | #include <linux/module.h> | |
28 | #include <linux/err.h> | |
8c65b4a6 TS |
29 | #include <linux/slab.h> |
30 | #include <linux/string.h> | |
c7ebbbce | 31 | |
e02f3f59 | 32 | #include <scsi/scsi.h> |
c7ebbbce CH |
33 | #include <scsi/scsi_device.h> |
34 | #include <scsi/scsi_host.h> | |
35 | #include <scsi/scsi_transport.h> | |
36 | #include <scsi/scsi_transport_sas.h> | |
37 | ||
38 | ||
39 | #define SAS_HOST_ATTRS 0 | |
07ba3a95 | 40 | #define SAS_PORT_ATTRS 17 |
a0125641 | 41 | #define SAS_RPORT_ATTRS 7 |
42ab0360 | 42 | #define SAS_END_DEV_ATTRS 3 |
c7ebbbce CH |
43 | |
44 | struct sas_internal { | |
45 | struct scsi_transport_template t; | |
46 | struct sas_function_template *f; | |
47 | ||
48 | struct class_device_attribute private_host_attrs[SAS_HOST_ATTRS]; | |
49 | struct class_device_attribute private_phy_attrs[SAS_PORT_ATTRS]; | |
50 | struct class_device_attribute private_rphy_attrs[SAS_RPORT_ATTRS]; | |
42ab0360 | 51 | struct class_device_attribute private_end_dev_attrs[SAS_END_DEV_ATTRS]; |
c7ebbbce CH |
52 | |
53 | struct transport_container phy_attr_cont; | |
54 | struct transport_container rphy_attr_cont; | |
42ab0360 | 55 | struct transport_container end_dev_attr_cont; |
c7ebbbce CH |
56 | |
57 | /* | |
58 | * The array of null terminated pointers to attributes | |
59 | * needed by scsi_sysfs.c | |
60 | */ | |
61 | struct class_device_attribute *host_attrs[SAS_HOST_ATTRS + 1]; | |
62 | struct class_device_attribute *phy_attrs[SAS_PORT_ATTRS + 1]; | |
63 | struct class_device_attribute *rphy_attrs[SAS_RPORT_ATTRS + 1]; | |
42ab0360 | 64 | struct class_device_attribute *end_dev_attrs[SAS_END_DEV_ATTRS + 1]; |
c7ebbbce CH |
65 | }; |
66 | #define to_sas_internal(tmpl) container_of(tmpl, struct sas_internal, t) | |
67 | ||
68 | struct sas_host_attrs { | |
69 | struct list_head rphy_list; | |
e02f3f59 | 70 | struct mutex lock; |
c7ebbbce CH |
71 | u32 next_target_id; |
72 | }; | |
73 | #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) | |
74 | ||
75 | ||
76 | /* | |
77 | * Hack to allow attributes of the same name in different objects. | |
78 | */ | |
79 | #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ | |
80 | struct class_device_attribute class_device_attr_##_prefix##_##_name = \ | |
81 | __ATTR(_name,_mode,_show,_store) | |
82 | ||
83 | ||
84 | /* | |
85 | * Pretty printing helpers | |
86 | */ | |
87 | ||
88 | #define sas_bitfield_name_match(title, table) \ | |
89 | static ssize_t \ | |
90 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
91 | { \ | |
92 | char *prefix = ""; \ | |
93 | ssize_t len = 0; \ | |
94 | int i; \ | |
95 | \ | |
96 | for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \ | |
97 | if (table[i].value & table_key) { \ | |
98 | len += sprintf(buf + len, "%s%s", \ | |
99 | prefix, table[i].name); \ | |
100 | prefix = ", "; \ | |
101 | } \ | |
102 | } \ | |
103 | len += sprintf(buf + len, "\n"); \ | |
104 | return len; \ | |
105 | } | |
106 | ||
107 | #define sas_bitfield_name_search(title, table) \ | |
108 | static ssize_t \ | |
109 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
110 | { \ | |
111 | ssize_t len = 0; \ | |
112 | int i; \ | |
113 | \ | |
114 | for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \ | |
115 | if (table[i].value == table_key) { \ | |
116 | len += sprintf(buf + len, "%s", \ | |
117 | table[i].name); \ | |
118 | break; \ | |
119 | } \ | |
120 | } \ | |
121 | len += sprintf(buf + len, "\n"); \ | |
122 | return len; \ | |
123 | } | |
124 | ||
125 | static struct { | |
126 | u32 value; | |
127 | char *name; | |
128 | } sas_device_type_names[] = { | |
129 | { SAS_PHY_UNUSED, "unused" }, | |
130 | { SAS_END_DEVICE, "end device" }, | |
131 | { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, | |
132 | { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, | |
133 | }; | |
134 | sas_bitfield_name_search(device_type, sas_device_type_names) | |
135 | ||
136 | ||
137 | static struct { | |
138 | u32 value; | |
139 | char *name; | |
140 | } sas_protocol_names[] = { | |
141 | { SAS_PROTOCOL_SATA, "sata" }, | |
142 | { SAS_PROTOCOL_SMP, "smp" }, | |
143 | { SAS_PROTOCOL_STP, "stp" }, | |
144 | { SAS_PROTOCOL_SSP, "ssp" }, | |
145 | }; | |
146 | sas_bitfield_name_match(protocol, sas_protocol_names) | |
147 | ||
148 | static struct { | |
149 | u32 value; | |
150 | char *name; | |
151 | } sas_linkspeed_names[] = { | |
152 | { SAS_LINK_RATE_UNKNOWN, "Unknown" }, | |
153 | { SAS_PHY_DISABLED, "Phy disabled" }, | |
154 | { SAS_LINK_RATE_FAILED, "Link Rate failed" }, | |
155 | { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, | |
156 | { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, | |
157 | { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, | |
7e6dff62 | 158 | { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, |
c7ebbbce CH |
159 | }; |
160 | sas_bitfield_name_search(linkspeed, sas_linkspeed_names) | |
161 | ||
162 | ||
163 | /* | |
164 | * SAS host attributes | |
165 | */ | |
166 | ||
37be6eeb JB |
167 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
168 | struct class_device *cdev) | |
c7ebbbce CH |
169 | { |
170 | struct Scsi_Host *shost = dev_to_shost(dev); | |
171 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
172 | ||
173 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 174 | mutex_init(&sas_host->lock); |
c7ebbbce CH |
175 | sas_host->next_target_id = 0; |
176 | return 0; | |
177 | } | |
178 | ||
179 | static DECLARE_TRANSPORT_CLASS(sas_host_class, | |
180 | "sas_host", sas_host_setup, NULL, NULL); | |
181 | ||
182 | static int sas_host_match(struct attribute_container *cont, | |
183 | struct device *dev) | |
184 | { | |
185 | struct Scsi_Host *shost; | |
186 | struct sas_internal *i; | |
187 | ||
188 | if (!scsi_is_host_device(dev)) | |
189 | return 0; | |
190 | shost = dev_to_shost(dev); | |
191 | ||
192 | if (!shost->transportt) | |
193 | return 0; | |
194 | if (shost->transportt->host_attrs.ac.class != | |
195 | &sas_host_class.class) | |
196 | return 0; | |
197 | ||
198 | i = to_sas_internal(shost->transportt); | |
199 | return &i->t.host_attrs.ac == cont; | |
200 | } | |
201 | ||
202 | static int do_sas_phy_delete(struct device *dev, void *data) | |
203 | { | |
204 | if (scsi_is_sas_phy(dev)) | |
205 | sas_phy_delete(dev_to_phy(dev)); | |
206 | return 0; | |
207 | } | |
208 | ||
209 | /** | |
210 | * sas_remove_host -- tear down a Scsi_Host's SAS data structures | |
211 | * @shost: Scsi Host that is torn down | |
212 | * | |
213 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. | |
214 | * Must be called just before scsi_remove_host for SAS HBAs. | |
215 | */ | |
216 | void sas_remove_host(struct Scsi_Host *shost) | |
217 | { | |
218 | device_for_each_child(&shost->shost_gendev, NULL, do_sas_phy_delete); | |
219 | } | |
220 | EXPORT_SYMBOL(sas_remove_host); | |
221 | ||
222 | ||
223 | /* | |
224 | * SAS Port attributes | |
225 | */ | |
226 | ||
227 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
228 | static ssize_t \ | |
229 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
230 | { \ | |
231 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
232 | \ | |
233 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
234 | } | |
235 | ||
236 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
237 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
238 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
239 | ||
240 | #define sas_phy_show_protocol(field, name) \ | |
241 | static ssize_t \ | |
242 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
243 | { \ | |
244 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
245 | \ | |
246 | if (!phy->field) \ | |
247 | return snprintf(buf, 20, "none\n"); \ | |
248 | return get_sas_protocol_names(phy->field, buf); \ | |
249 | } | |
250 | ||
251 | #define sas_phy_protocol_attr(field, name) \ | |
252 | sas_phy_show_protocol(field, name) \ | |
253 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
254 | ||
255 | #define sas_phy_show_linkspeed(field) \ | |
256 | static ssize_t \ | |
257 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
258 | { \ | |
259 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
260 | \ | |
261 | return get_sas_linkspeed_names(phy->field, buf); \ | |
262 | } | |
263 | ||
264 | #define sas_phy_linkspeed_attr(field) \ | |
265 | sas_phy_show_linkspeed(field) \ | |
266 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
267 | ||
c3ee74c4 CH |
268 | #define sas_phy_show_linkerror(field) \ |
269 | static ssize_t \ | |
270 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
271 | { \ | |
272 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
273 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ | |
274 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
275 | int error; \ | |
276 | \ | |
ac01bbbd CH |
277 | if (!phy->local_attached) \ |
278 | return -EINVAL; \ | |
279 | \ | |
dd9fbb52 | 280 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
281 | if (error) \ |
282 | return error; \ | |
283 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
284 | } | |
285 | ||
286 | #define sas_phy_linkerror_attr(field) \ | |
287 | sas_phy_show_linkerror(field) \ | |
288 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
289 | ||
290 | ||
c7ebbbce CH |
291 | static ssize_t |
292 | show_sas_device_type(struct class_device *cdev, char *buf) | |
293 | { | |
294 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
295 | ||
296 | if (!phy->identify.device_type) | |
297 | return snprintf(buf, 20, "none\n"); | |
298 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
299 | } | |
c7ebbbce CH |
300 | static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
301 | ||
07ba3a95 CH |
302 | static ssize_t do_sas_phy_reset(struct class_device *cdev, |
303 | size_t count, int hard_reset) | |
304 | { | |
305 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
306 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
307 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
308 | int error; | |
309 | ||
310 | if (!phy->local_attached) | |
311 | return -EINVAL; | |
312 | ||
313 | error = i->f->phy_reset(phy, hard_reset); | |
314 | if (error) | |
315 | return error; | |
316 | return count; | |
317 | }; | |
318 | ||
319 | static ssize_t store_sas_link_reset(struct class_device *cdev, | |
320 | const char *buf, size_t count) | |
321 | { | |
322 | return do_sas_phy_reset(cdev, count, 0); | |
323 | } | |
324 | static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); | |
325 | ||
326 | static ssize_t store_sas_hard_reset(struct class_device *cdev, | |
327 | const char *buf, size_t count) | |
328 | { | |
329 | return do_sas_phy_reset(cdev, count, 1); | |
330 | } | |
331 | static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); | |
332 | ||
c7ebbbce CH |
333 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
334 | initiator_port_protocols); | |
335 | sas_phy_protocol_attr(identify.target_port_protocols, | |
336 | target_port_protocols); | |
337 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
338 | unsigned long long); | |
339 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
340 | sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", u8); | |
341 | sas_phy_linkspeed_attr(negotiated_linkrate); | |
342 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
343 | sas_phy_linkspeed_attr(minimum_linkrate); | |
344 | sas_phy_linkspeed_attr(maximum_linkrate_hw); | |
345 | sas_phy_linkspeed_attr(maximum_linkrate); | |
c3ee74c4 CH |
346 | sas_phy_linkerror_attr(invalid_dword_count); |
347 | sas_phy_linkerror_attr(running_disparity_error_count); | |
348 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
349 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce CH |
350 | |
351 | ||
352 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
353 | "sas_phy", NULL, NULL, NULL); | |
354 | ||
355 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
356 | { | |
357 | struct Scsi_Host *shost; | |
358 | struct sas_internal *i; | |
359 | ||
360 | if (!scsi_is_sas_phy(dev)) | |
361 | return 0; | |
362 | shost = dev_to_shost(dev->parent); | |
363 | ||
364 | if (!shost->transportt) | |
365 | return 0; | |
366 | if (shost->transportt->host_attrs.ac.class != | |
367 | &sas_host_class.class) | |
368 | return 0; | |
369 | ||
370 | i = to_sas_internal(shost->transportt); | |
371 | return &i->phy_attr_cont.ac == cont; | |
372 | } | |
373 | ||
374 | static void sas_phy_release(struct device *dev) | |
375 | { | |
376 | struct sas_phy *phy = dev_to_phy(dev); | |
377 | ||
378 | put_device(dev->parent); | |
379 | kfree(phy); | |
380 | } | |
381 | ||
382 | /** | |
383 | * sas_phy_alloc -- allocates and initialize a SAS PHY structure | |
384 | * @parent: Parent device | |
d99ca418 | 385 | * @number: Phy index |
c7ebbbce CH |
386 | * |
387 | * Allocates an SAS PHY structure. It will be added in the device tree | |
388 | * below the device specified by @parent, which has to be either a Scsi_Host | |
389 | * or sas_rphy. | |
390 | * | |
391 | * Returns: | |
392 | * SAS PHY allocated or %NULL if the allocation failed. | |
393 | */ | |
394 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
395 | { | |
396 | struct Scsi_Host *shost = dev_to_shost(parent); | |
397 | struct sas_phy *phy; | |
398 | ||
24669f75 | 399 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
400 | if (!phy) |
401 | return NULL; | |
c7ebbbce CH |
402 | |
403 | get_device(parent); | |
404 | ||
405 | phy->number = number; | |
406 | ||
407 | device_initialize(&phy->dev); | |
408 | phy->dev.parent = get_device(parent); | |
409 | phy->dev.release = sas_phy_release; | |
410 | sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); | |
411 | ||
412 | transport_setup_device(&phy->dev); | |
413 | ||
414 | return phy; | |
415 | } | |
416 | EXPORT_SYMBOL(sas_phy_alloc); | |
417 | ||
418 | /** | |
419 | * sas_phy_add -- add a SAS PHY to the device hierachy | |
420 | * @phy: The PHY to be added | |
421 | * | |
422 | * Publishes a SAS PHY to the rest of the system. | |
423 | */ | |
424 | int sas_phy_add(struct sas_phy *phy) | |
425 | { | |
426 | int error; | |
427 | ||
428 | error = device_add(&phy->dev); | |
429 | if (!error) { | |
430 | transport_add_device(&phy->dev); | |
431 | transport_configure_device(&phy->dev); | |
432 | } | |
433 | ||
434 | return error; | |
435 | } | |
436 | EXPORT_SYMBOL(sas_phy_add); | |
437 | ||
438 | /** | |
439 | * sas_phy_free -- free a SAS PHY | |
440 | * @phy: SAS PHY to free | |
441 | * | |
442 | * Frees the specified SAS PHY. | |
443 | * | |
444 | * Note: | |
445 | * This function must only be called on a PHY that has not | |
446 | * sucessfully been added using sas_phy_add(). | |
447 | */ | |
448 | void sas_phy_free(struct sas_phy *phy) | |
449 | { | |
450 | transport_destroy_device(&phy->dev); | |
451 | put_device(phy->dev.parent); | |
452 | put_device(phy->dev.parent); | |
453 | put_device(phy->dev.parent); | |
454 | kfree(phy); | |
455 | } | |
456 | EXPORT_SYMBOL(sas_phy_free); | |
457 | ||
458 | /** | |
459 | * sas_phy_delete -- remove SAS PHY | |
460 | * @phy: SAS PHY to remove | |
461 | * | |
462 | * Removes the specified SAS PHY. If the SAS PHY has an | |
463 | * associated remote PHY it is removed before. | |
464 | */ | |
465 | void | |
466 | sas_phy_delete(struct sas_phy *phy) | |
467 | { | |
468 | struct device *dev = &phy->dev; | |
469 | ||
470 | if (phy->rphy) | |
471 | sas_rphy_delete(phy->rphy); | |
472 | ||
473 | transport_remove_device(dev); | |
474 | device_del(dev); | |
475 | transport_destroy_device(dev); | |
476 | put_device(dev->parent); | |
477 | } | |
478 | EXPORT_SYMBOL(sas_phy_delete); | |
479 | ||
480 | /** | |
481 | * scsi_is_sas_phy -- check if a struct device represents a SAS PHY | |
482 | * @dev: device to check | |
483 | * | |
484 | * Returns: | |
485 | * %1 if the device represents a SAS PHY, %0 else | |
486 | */ | |
487 | int scsi_is_sas_phy(const struct device *dev) | |
488 | { | |
489 | return dev->release == sas_phy_release; | |
490 | } | |
491 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
492 | ||
493 | /* | |
494 | * SAS remote PHY attributes. | |
495 | */ | |
496 | ||
497 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
498 | static ssize_t \ | |
499 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
500 | { \ | |
501 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
502 | \ | |
503 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
504 | } | |
505 | ||
506 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
507 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
508 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
509 | show_sas_rphy_##name, NULL) | |
510 | ||
511 | #define sas_rphy_show_protocol(field, name) \ | |
512 | static ssize_t \ | |
513 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
514 | { \ | |
515 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
516 | \ | |
517 | if (!rphy->field) \ | |
518 | return snprintf(buf, 20, "none\n"); \ | |
519 | return get_sas_protocol_names(rphy->field, buf); \ | |
520 | } | |
521 | ||
522 | #define sas_rphy_protocol_attr(field, name) \ | |
523 | sas_rphy_show_protocol(field, name) \ | |
524 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
525 | show_sas_rphy_##name, NULL) | |
526 | ||
527 | static ssize_t | |
528 | show_sas_rphy_device_type(struct class_device *cdev, char *buf) | |
529 | { | |
530 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
531 | ||
532 | if (!rphy->identify.device_type) | |
533 | return snprintf(buf, 20, "none\n"); | |
534 | return get_sas_device_type_names( | |
535 | rphy->identify.device_type, buf); | |
536 | } | |
537 | ||
538 | static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO, | |
539 | show_sas_rphy_device_type, NULL); | |
540 | ||
a0125641 CH |
541 | static ssize_t |
542 | show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf) | |
543 | { | |
544 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
545 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
546 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
547 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
548 | u64 identifier; | |
549 | int error; | |
550 | ||
551 | /* | |
552 | * Only devices behind an expander are supported, because the | |
553 | * enclosure identifier is a SMP feature. | |
554 | */ | |
555 | if (phy->local_attached) | |
556 | return -EINVAL; | |
557 | ||
558 | error = i->f->get_enclosure_identifier(rphy, &identifier); | |
559 | if (error) | |
560 | return error; | |
561 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
562 | } | |
563 | ||
564 | static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, | |
565 | show_sas_rphy_enclosure_identifier, NULL); | |
566 | ||
567 | static ssize_t | |
568 | show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf) | |
569 | { | |
570 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
571 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
572 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
573 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
574 | int val; | |
575 | ||
576 | if (phy->local_attached) | |
577 | return -EINVAL; | |
578 | ||
579 | val = i->f->get_bay_identifier(rphy); | |
580 | if (val < 0) | |
581 | return val; | |
582 | return sprintf(buf, "%d\n", val); | |
583 | } | |
584 | ||
585 | static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, | |
586 | show_sas_rphy_bay_identifier, NULL); | |
587 | ||
c7ebbbce CH |
588 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
589 | initiator_port_protocols); | |
590 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
591 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
592 | unsigned long long); | |
593 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
594 | ||
42ab0360 JB |
595 | /* only need 8 bytes of data plus header (4 or 8) */ |
596 | #define BUF_SIZE 64 | |
597 | ||
598 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
599 | { | |
600 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
601 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
602 | struct sas_end_device *rdev; | |
603 | struct scsi_mode_data mode_data; | |
604 | int res, error; | |
605 | ||
606 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
607 | ||
608 | rdev = rphy_to_end_device(rphy); | |
609 | ||
610 | if (!buffer) | |
611 | return -ENOMEM; | |
612 | ||
613 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
614 | &mode_data, NULL); | |
615 | ||
616 | error = -EINVAL; | |
617 | if (!scsi_status_is_good(res)) | |
618 | goto out; | |
619 | ||
620 | msdata = buffer + mode_data.header_length + | |
621 | mode_data.block_descriptor_length; | |
622 | ||
623 | if (msdata - buffer > BUF_SIZE - 8) | |
624 | goto out; | |
625 | ||
626 | error = 0; | |
627 | ||
628 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
629 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
630 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
631 | ||
632 | out: | |
633 | kfree(buffer); | |
634 | return error; | |
635 | } | |
636 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
637 | ||
638 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ | |
639 | static ssize_t \ | |
640 | show_sas_end_dev_##name(struct class_device *cdev, char *buf) \ | |
641 | { \ | |
642 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
643 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ | |
644 | \ | |
645 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
646 | } | |
647 | ||
648 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
649 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
650 | static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ | |
651 | show_sas_end_dev_##name, NULL) | |
652 | ||
653 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
654 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
655 | "%d\n", int); | |
656 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
657 | "%d\n", int); | |
658 | ||
659 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, | |
660 | "sas_end_device", NULL, NULL, NULL); | |
661 | ||
c7ebbbce CH |
662 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
663 | "sas_rphy", NULL, NULL, NULL); | |
664 | ||
665 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
666 | { | |
667 | struct Scsi_Host *shost; | |
668 | struct sas_internal *i; | |
669 | ||
670 | if (!scsi_is_sas_rphy(dev)) | |
671 | return 0; | |
672 | shost = dev_to_shost(dev->parent->parent); | |
673 | ||
674 | if (!shost->transportt) | |
675 | return 0; | |
676 | if (shost->transportt->host_attrs.ac.class != | |
677 | &sas_host_class.class) | |
678 | return 0; | |
679 | ||
680 | i = to_sas_internal(shost->transportt); | |
681 | return &i->rphy_attr_cont.ac == cont; | |
682 | } | |
683 | ||
42ab0360 JB |
684 | static int sas_end_dev_match(struct attribute_container *cont, |
685 | struct device *dev) | |
686 | { | |
687 | struct Scsi_Host *shost; | |
688 | struct sas_internal *i; | |
689 | struct sas_rphy *rphy; | |
690 | ||
691 | if (!scsi_is_sas_rphy(dev)) | |
692 | return 0; | |
693 | shost = dev_to_shost(dev->parent->parent); | |
694 | rphy = dev_to_rphy(dev); | |
695 | ||
696 | if (!shost->transportt) | |
697 | return 0; | |
698 | if (shost->transportt->host_attrs.ac.class != | |
699 | &sas_host_class.class) | |
700 | return 0; | |
701 | ||
702 | i = to_sas_internal(shost->transportt); | |
703 | return &i->end_dev_attr_cont.ac == cont && | |
704 | rphy->identify.device_type == SAS_END_DEVICE && | |
705 | /* FIXME: remove contained eventually */ | |
706 | rphy->contained; | |
707 | } | |
708 | ||
c7ebbbce CH |
709 | static void sas_rphy_release(struct device *dev) |
710 | { | |
711 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
712 | ||
713 | put_device(dev->parent); | |
714 | kfree(rphy); | |
715 | } | |
716 | ||
717 | /** | |
718 | * sas_rphy_alloc -- allocates and initialize a SAS remote PHY structure | |
719 | * @parent: SAS PHY this remote PHY is conneted to | |
720 | * | |
721 | * Allocates an SAS remote PHY structure, connected to @parent. | |
722 | * | |
723 | * Returns: | |
724 | * SAS PHY allocated or %NULL if the allocation failed. | |
725 | */ | |
726 | struct sas_rphy *sas_rphy_alloc(struct sas_phy *parent) | |
727 | { | |
728 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
729 | struct sas_rphy *rphy; | |
730 | ||
24669f75 | 731 | rphy = kzalloc(sizeof(*rphy), GFP_KERNEL); |
c7ebbbce CH |
732 | if (!rphy) { |
733 | put_device(&parent->dev); | |
734 | return NULL; | |
735 | } | |
c7ebbbce CH |
736 | |
737 | device_initialize(&rphy->dev); | |
738 | rphy->dev.parent = get_device(&parent->dev); | |
739 | rphy->dev.release = sas_rphy_release; | |
d99ca418 ME |
740 | sprintf(rphy->dev.bus_id, "rphy-%d:%d-%d", |
741 | shost->host_no, parent->port_identifier, parent->number); | |
c7ebbbce CH |
742 | transport_setup_device(&rphy->dev); |
743 | ||
744 | return rphy; | |
745 | } | |
746 | EXPORT_SYMBOL(sas_rphy_alloc); | |
747 | ||
42ab0360 JB |
748 | /** |
749 | * sas_end_device_alloc - allocate an rphy for an end device | |
750 | * | |
751 | * Allocates an SAS remote PHY structure, connected to @parent. | |
752 | * | |
753 | * Returns: | |
754 | * SAS PHY allocated or %NULL if the allocation failed. | |
755 | */ | |
756 | struct sas_rphy *sas_end_device_alloc(struct sas_phy *parent) | |
757 | { | |
758 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
759 | struct sas_end_device *rdev; | |
760 | ||
761 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
762 | if (!rdev) { | |
763 | put_device(&parent->dev); | |
764 | return NULL; | |
765 | } | |
766 | ||
767 | device_initialize(&rdev->rphy.dev); | |
768 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
769 | rdev->rphy.dev.release = sas_rphy_release; | |
770 | sprintf(rdev->rphy.dev.bus_id, "rphy-%d:%d-%d", | |
771 | shost->host_no, parent->port_identifier, parent->number); | |
772 | rdev->rphy.identify.device_type = SAS_END_DEVICE; | |
773 | /* FIXME: mark the rphy as being contained in a larger structure */ | |
774 | rdev->rphy.contained = 1; | |
775 | transport_setup_device(&rdev->rphy.dev); | |
776 | ||
777 | return &rdev->rphy; | |
778 | } | |
779 | EXPORT_SYMBOL(sas_end_device_alloc); | |
780 | ||
781 | ||
c7ebbbce CH |
782 | /** |
783 | * sas_rphy_add -- add a SAS remote PHY to the device hierachy | |
784 | * @rphy: The remote PHY to be added | |
785 | * | |
786 | * Publishes a SAS remote PHY to the rest of the system. | |
787 | */ | |
788 | int sas_rphy_add(struct sas_rphy *rphy) | |
789 | { | |
790 | struct sas_phy *parent = dev_to_phy(rphy->dev.parent); | |
791 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); | |
792 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
793 | struct sas_identify *identify = &rphy->identify; | |
794 | int error; | |
795 | ||
796 | if (parent->rphy) | |
797 | return -ENXIO; | |
798 | parent->rphy = rphy; | |
799 | ||
800 | error = device_add(&rphy->dev); | |
801 | if (error) | |
802 | return error; | |
803 | transport_add_device(&rphy->dev); | |
804 | transport_configure_device(&rphy->dev); | |
805 | ||
e02f3f59 | 806 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
807 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
808 | if (identify->device_type == SAS_END_DEVICE && | |
809 | (identify->target_port_protocols & | |
810 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
811 | rphy->scsi_target_id = sas_host->next_target_id++; | |
812 | else | |
813 | rphy->scsi_target_id = -1; | |
e02f3f59 | 814 | mutex_unlock(&sas_host->lock); |
c7ebbbce CH |
815 | |
816 | if (rphy->scsi_target_id != -1) { | |
e6bc863c | 817 | scsi_scan_target(&rphy->dev, parent->port_identifier, |
c7ebbbce CH |
818 | rphy->scsi_target_id, ~0, 0); |
819 | } | |
820 | ||
821 | return 0; | |
822 | } | |
823 | EXPORT_SYMBOL(sas_rphy_add); | |
824 | ||
825 | /** | |
826 | * sas_rphy_free -- free a SAS remote PHY | |
827 | * @rphy SAS remote PHY to free | |
828 | * | |
829 | * Frees the specified SAS remote PHY. | |
830 | * | |
831 | * Note: | |
832 | * This function must only be called on a remote | |
833 | * PHY that has not sucessfully been added using | |
834 | * sas_rphy_add(). | |
835 | */ | |
836 | void sas_rphy_free(struct sas_rphy *rphy) | |
837 | { | |
838 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); | |
839 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
840 | ||
e02f3f59 | 841 | mutex_lock(&sas_host->lock); |
c7ebbbce | 842 | list_del(&rphy->list); |
e02f3f59 | 843 | mutex_unlock(&sas_host->lock); |
c7ebbbce CH |
844 | |
845 | transport_destroy_device(&rphy->dev); | |
846 | put_device(rphy->dev.parent); | |
847 | put_device(rphy->dev.parent); | |
848 | put_device(rphy->dev.parent); | |
849 | kfree(rphy); | |
850 | } | |
851 | EXPORT_SYMBOL(sas_rphy_free); | |
852 | ||
853 | /** | |
854 | * sas_rphy_delete -- remove SAS remote PHY | |
855 | * @rphy: SAS remote PHY to remove | |
856 | * | |
857 | * Removes the specified SAS remote PHY. | |
858 | */ | |
859 | void | |
860 | sas_rphy_delete(struct sas_rphy *rphy) | |
861 | { | |
862 | struct device *dev = &rphy->dev; | |
863 | struct sas_phy *parent = dev_to_phy(dev->parent); | |
864 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); | |
865 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
866 | ||
d4054239 CH |
867 | switch (rphy->identify.device_type) { |
868 | case SAS_END_DEVICE: | |
869 | scsi_remove_target(dev); | |
870 | break; | |
871 | case SAS_EDGE_EXPANDER_DEVICE: | |
872 | case SAS_FANOUT_EXPANDER_DEVICE: | |
873 | device_for_each_child(dev, NULL, do_sas_phy_delete); | |
874 | break; | |
875 | default: | |
876 | break; | |
877 | } | |
c7ebbbce | 878 | |
fe8b2304 CH |
879 | transport_remove_device(dev); |
880 | device_del(dev); | |
881 | transport_destroy_device(dev); | |
c7ebbbce | 882 | |
e02f3f59 | 883 | mutex_lock(&sas_host->lock); |
c7ebbbce | 884 | list_del(&rphy->list); |
e02f3f59 | 885 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 886 | |
33b114e9 CH |
887 | parent->rphy = NULL; |
888 | ||
c7ebbbce CH |
889 | put_device(&parent->dev); |
890 | } | |
891 | EXPORT_SYMBOL(sas_rphy_delete); | |
892 | ||
893 | /** | |
894 | * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY | |
895 | * @dev: device to check | |
896 | * | |
897 | * Returns: | |
898 | * %1 if the device represents a SAS remote PHY, %0 else | |
899 | */ | |
900 | int scsi_is_sas_rphy(const struct device *dev) | |
901 | { | |
902 | return dev->release == sas_rphy_release; | |
903 | } | |
904 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
905 | ||
906 | ||
907 | /* | |
908 | * SCSI scan helper | |
909 | */ | |
910 | ||
e02f3f59 CH |
911 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
912 | uint id, uint lun) | |
c7ebbbce CH |
913 | { |
914 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
915 | struct sas_rphy *rphy; | |
c7ebbbce | 916 | |
e02f3f59 | 917 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
918 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
919 | struct sas_phy *parent = dev_to_phy(rphy->dev.parent); | |
e02f3f59 CH |
920 | |
921 | if (rphy->scsi_target_id == -1) | |
922 | continue; | |
923 | ||
e6bc863c | 924 | if ((channel == SCAN_WILD_CARD || channel == parent->port_identifier) && |
e02f3f59 | 925 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
e6bc863c | 926 | scsi_scan_target(&rphy->dev, parent->port_identifier, |
e02f3f59 CH |
927 | rphy->scsi_target_id, lun, 1); |
928 | } | |
c7ebbbce | 929 | } |
e02f3f59 | 930 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 931 | |
e02f3f59 | 932 | return 0; |
c7ebbbce CH |
933 | } |
934 | ||
935 | ||
936 | /* | |
937 | * Setup / Teardown code | |
938 | */ | |
939 | ||
42ab0360 JB |
940 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
941 | i->private_##attrb[count] = class_device_attr_##field; \ | |
942 | i->private_##attrb[count].attr.mode = perm; \ | |
943 | i->private_##attrb[count].store = NULL; \ | |
944 | i->attrb[count] = &i->private_##attrb[count]; \ | |
945 | if (test) \ | |
946 | count++ | |
947 | ||
948 | ||
949 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
950 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 951 | |
dd9fbb52 | 952 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 953 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 954 | |
c7ebbbce | 955 | #define SETUP_PORT_ATTRIBUTE(field) \ |
42ab0360 | 956 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 957 | |
dd9fbb52 | 958 | #define SETUP_OPTIONAL_PORT_ATTRIBUTE(field, func) \ |
42ab0360 | 959 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 960 | |
07ba3a95 | 961 | #define SETUP_PORT_ATTRIBUTE_WRONLY(field) \ |
42ab0360 | 962 | SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, 1) |
07ba3a95 | 963 | |
dd9fbb52 | 964 | #define SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(field, func) \ |
42ab0360 | 965 | SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, i->f->func) |
dd9fbb52 | 966 | |
42ab0360 JB |
967 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
968 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce CH |
969 | |
970 | /** | |
971 | * sas_attach_transport -- instantiate SAS transport template | |
972 | * @ft: SAS transport class function template | |
973 | */ | |
974 | struct scsi_transport_template * | |
975 | sas_attach_transport(struct sas_function_template *ft) | |
976 | { | |
977 | struct sas_internal *i; | |
978 | int count; | |
979 | ||
24669f75 | 980 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
981 | if (!i) |
982 | return NULL; | |
c7ebbbce | 983 | |
e02f3f59 | 984 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
985 | |
986 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
987 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
988 | i->t.host_attrs.ac.match = sas_host_match; | |
989 | transport_container_register(&i->t.host_attrs); | |
990 | i->t.host_size = sizeof(struct sas_host_attrs); | |
991 | ||
992 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
993 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
994 | i->phy_attr_cont.ac.match = sas_phy_match; | |
995 | transport_container_register(&i->phy_attr_cont); | |
996 | ||
997 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; | |
998 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
999 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1000 | transport_container_register(&i->rphy_attr_cont); | |
1001 | ||
42ab0360 JB |
1002 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1003 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1004 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1005 | transport_container_register(&i->end_dev_attr_cont); | |
1006 | ||
c7ebbbce CH |
1007 | i->f = ft; |
1008 | ||
1009 | count = 0; | |
1010 | i->host_attrs[count] = NULL; | |
1011 | ||
1012 | count = 0; | |
1013 | SETUP_PORT_ATTRIBUTE(initiator_port_protocols); | |
1014 | SETUP_PORT_ATTRIBUTE(target_port_protocols); | |
1015 | SETUP_PORT_ATTRIBUTE(device_type); | |
1016 | SETUP_PORT_ATTRIBUTE(sas_address); | |
1017 | SETUP_PORT_ATTRIBUTE(phy_identifier); | |
1018 | SETUP_PORT_ATTRIBUTE(port_identifier); | |
1019 | SETUP_PORT_ATTRIBUTE(negotiated_linkrate); | |
1020 | SETUP_PORT_ATTRIBUTE(minimum_linkrate_hw); | |
1021 | SETUP_PORT_ATTRIBUTE(minimum_linkrate); | |
1022 | SETUP_PORT_ATTRIBUTE(maximum_linkrate_hw); | |
1023 | SETUP_PORT_ATTRIBUTE(maximum_linkrate); | |
c3ee74c4 CH |
1024 | |
1025 | SETUP_PORT_ATTRIBUTE(invalid_dword_count); | |
1026 | SETUP_PORT_ATTRIBUTE(running_disparity_error_count); | |
1027 | SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count); | |
1028 | SETUP_PORT_ATTRIBUTE(phy_reset_problem_count); | |
dd9fbb52 JB |
1029 | SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(link_reset, phy_reset); |
1030 | SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
c7ebbbce CH |
1031 | i->phy_attrs[count] = NULL; |
1032 | ||
1033 | count = 0; | |
1034 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1035 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1036 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1037 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1038 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
dd9fbb52 JB |
1039 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1040 | get_enclosure_identifier); | |
1041 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1042 | get_bay_identifier); | |
c7ebbbce CH |
1043 | i->rphy_attrs[count] = NULL; |
1044 | ||
42ab0360 JB |
1045 | count = 0; |
1046 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1047 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1048 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
1049 | i->end_dev_attrs[count] = NULL; | |
1050 | ||
c7ebbbce CH |
1051 | return &i->t; |
1052 | } | |
1053 | EXPORT_SYMBOL(sas_attach_transport); | |
1054 | ||
1055 | /** | |
1056 | * sas_release_transport -- release SAS transport template instance | |
1057 | * @t: transport template instance | |
1058 | */ | |
1059 | void sas_release_transport(struct scsi_transport_template *t) | |
1060 | { | |
1061 | struct sas_internal *i = to_sas_internal(t); | |
1062 | ||
1063 | transport_container_unregister(&i->t.host_attrs); | |
1064 | transport_container_unregister(&i->phy_attr_cont); | |
1065 | transport_container_unregister(&i->rphy_attr_cont); | |
1066 | ||
1067 | kfree(i); | |
1068 | } | |
1069 | EXPORT_SYMBOL(sas_release_transport); | |
1070 | ||
1071 | static __init int sas_transport_init(void) | |
1072 | { | |
1073 | int error; | |
1074 | ||
1075 | error = transport_class_register(&sas_host_class); | |
1076 | if (error) | |
1077 | goto out; | |
1078 | error = transport_class_register(&sas_phy_class); | |
1079 | if (error) | |
1080 | goto out_unregister_transport; | |
1081 | error = transport_class_register(&sas_rphy_class); | |
1082 | if (error) | |
1083 | goto out_unregister_phy; | |
42ab0360 JB |
1084 | error = transport_class_register(&sas_end_dev_class); |
1085 | if (error) | |
1086 | goto out_unregister_rphy; | |
c7ebbbce CH |
1087 | |
1088 | return 0; | |
1089 | ||
42ab0360 JB |
1090 | out_unregister_rphy: |
1091 | transport_class_unregister(&sas_rphy_class); | |
c7ebbbce CH |
1092 | out_unregister_phy: |
1093 | transport_class_unregister(&sas_phy_class); | |
1094 | out_unregister_transport: | |
1095 | transport_class_unregister(&sas_host_class); | |
1096 | out: | |
1097 | return error; | |
1098 | ||
1099 | } | |
1100 | ||
1101 | static void __exit sas_transport_exit(void) | |
1102 | { | |
1103 | transport_class_unregister(&sas_host_class); | |
1104 | transport_class_unregister(&sas_phy_class); | |
1105 | transport_class_unregister(&sas_rphy_class); | |
42ab0360 | 1106 | transport_class_unregister(&sas_end_dev_class); |
c7ebbbce CH |
1107 | } |
1108 | ||
1109 | MODULE_AUTHOR("Christoph Hellwig"); | |
1110 | MODULE_DESCRIPTION("SAS Transphy Attributes"); | |
1111 | MODULE_LICENSE("GPL"); | |
1112 | ||
1113 | module_init(sas_transport_init); | |
1114 | module_exit(sas_transport_exit); |