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, | |
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 |
79cb1819 | 43 | #define SAS_EXPANDER_ATTRS 7 |
c7ebbbce CH |
44 | |
45 | struct sas_internal { | |
46 | struct scsi_transport_template t; | |
47 | struct sas_function_template *f; | |
48 | ||
49 | struct class_device_attribute private_host_attrs[SAS_HOST_ATTRS]; | |
50 | struct class_device_attribute private_phy_attrs[SAS_PORT_ATTRS]; | |
51 | struct class_device_attribute private_rphy_attrs[SAS_RPORT_ATTRS]; | |
42ab0360 | 52 | struct class_device_attribute private_end_dev_attrs[SAS_END_DEV_ATTRS]; |
79cb1819 | 53 | struct class_device_attribute private_expander_attrs[SAS_EXPANDER_ATTRS]; |
c7ebbbce CH |
54 | |
55 | struct transport_container phy_attr_cont; | |
56 | struct transport_container rphy_attr_cont; | |
42ab0360 | 57 | struct transport_container end_dev_attr_cont; |
79cb1819 | 58 | struct transport_container expander_attr_cont; |
c7ebbbce CH |
59 | |
60 | /* | |
61 | * The array of null terminated pointers to attributes | |
62 | * needed by scsi_sysfs.c | |
63 | */ | |
64 | struct class_device_attribute *host_attrs[SAS_HOST_ATTRS + 1]; | |
65 | struct class_device_attribute *phy_attrs[SAS_PORT_ATTRS + 1]; | |
66 | struct class_device_attribute *rphy_attrs[SAS_RPORT_ATTRS + 1]; | |
42ab0360 | 67 | struct class_device_attribute *end_dev_attrs[SAS_END_DEV_ATTRS + 1]; |
79cb1819 | 68 | struct class_device_attribute *expander_attrs[SAS_EXPANDER_ATTRS + 1]; |
c7ebbbce CH |
69 | }; |
70 | #define to_sas_internal(tmpl) container_of(tmpl, struct sas_internal, t) | |
71 | ||
72 | struct sas_host_attrs { | |
73 | struct list_head rphy_list; | |
e02f3f59 | 74 | struct mutex lock; |
c7ebbbce | 75 | u32 next_target_id; |
79cb1819 | 76 | u32 next_expander_id; |
c7ebbbce CH |
77 | }; |
78 | #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) | |
79 | ||
80 | ||
81 | /* | |
82 | * Hack to allow attributes of the same name in different objects. | |
83 | */ | |
84 | #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ | |
85 | struct class_device_attribute class_device_attr_##_prefix##_##_name = \ | |
86 | __ATTR(_name,_mode,_show,_store) | |
87 | ||
88 | ||
89 | /* | |
90 | * Pretty printing helpers | |
91 | */ | |
92 | ||
93 | #define sas_bitfield_name_match(title, table) \ | |
94 | static ssize_t \ | |
95 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
96 | { \ | |
97 | char *prefix = ""; \ | |
98 | ssize_t len = 0; \ | |
99 | int i; \ | |
100 | \ | |
101 | for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \ | |
102 | if (table[i].value & table_key) { \ | |
103 | len += sprintf(buf + len, "%s%s", \ | |
104 | prefix, table[i].name); \ | |
105 | prefix = ", "; \ | |
106 | } \ | |
107 | } \ | |
108 | len += sprintf(buf + len, "\n"); \ | |
109 | return len; \ | |
110 | } | |
111 | ||
112 | #define sas_bitfield_name_search(title, table) \ | |
113 | static ssize_t \ | |
114 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
115 | { \ | |
116 | ssize_t len = 0; \ | |
117 | int i; \ | |
118 | \ | |
119 | for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \ | |
120 | if (table[i].value == table_key) { \ | |
121 | len += sprintf(buf + len, "%s", \ | |
122 | table[i].name); \ | |
123 | break; \ | |
124 | } \ | |
125 | } \ | |
126 | len += sprintf(buf + len, "\n"); \ | |
127 | return len; \ | |
128 | } | |
129 | ||
130 | static struct { | |
131 | u32 value; | |
132 | char *name; | |
133 | } sas_device_type_names[] = { | |
134 | { SAS_PHY_UNUSED, "unused" }, | |
135 | { SAS_END_DEVICE, "end device" }, | |
136 | { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, | |
137 | { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, | |
138 | }; | |
139 | sas_bitfield_name_search(device_type, sas_device_type_names) | |
140 | ||
141 | ||
142 | static struct { | |
143 | u32 value; | |
144 | char *name; | |
145 | } sas_protocol_names[] = { | |
146 | { SAS_PROTOCOL_SATA, "sata" }, | |
147 | { SAS_PROTOCOL_SMP, "smp" }, | |
148 | { SAS_PROTOCOL_STP, "stp" }, | |
149 | { SAS_PROTOCOL_SSP, "ssp" }, | |
150 | }; | |
151 | sas_bitfield_name_match(protocol, sas_protocol_names) | |
152 | ||
153 | static struct { | |
154 | u32 value; | |
155 | char *name; | |
156 | } sas_linkspeed_names[] = { | |
157 | { SAS_LINK_RATE_UNKNOWN, "Unknown" }, | |
158 | { SAS_PHY_DISABLED, "Phy disabled" }, | |
159 | { SAS_LINK_RATE_FAILED, "Link Rate failed" }, | |
160 | { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, | |
161 | { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, | |
162 | { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, | |
7e6dff62 | 163 | { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, |
c7ebbbce CH |
164 | }; |
165 | sas_bitfield_name_search(linkspeed, sas_linkspeed_names) | |
166 | ||
167 | ||
168 | /* | |
169 | * SAS host attributes | |
170 | */ | |
171 | ||
37be6eeb JB |
172 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
173 | struct class_device *cdev) | |
c7ebbbce CH |
174 | { |
175 | struct Scsi_Host *shost = dev_to_shost(dev); | |
176 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
177 | ||
178 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 179 | mutex_init(&sas_host->lock); |
c7ebbbce | 180 | sas_host->next_target_id = 0; |
79cb1819 | 181 | sas_host->next_expander_id = 0; |
c7ebbbce CH |
182 | return 0; |
183 | } | |
184 | ||
185 | static DECLARE_TRANSPORT_CLASS(sas_host_class, | |
186 | "sas_host", sas_host_setup, NULL, NULL); | |
187 | ||
188 | static int sas_host_match(struct attribute_container *cont, | |
189 | struct device *dev) | |
190 | { | |
191 | struct Scsi_Host *shost; | |
192 | struct sas_internal *i; | |
193 | ||
194 | if (!scsi_is_host_device(dev)) | |
195 | return 0; | |
196 | shost = dev_to_shost(dev); | |
197 | ||
198 | if (!shost->transportt) | |
199 | return 0; | |
200 | if (shost->transportt->host_attrs.ac.class != | |
201 | &sas_host_class.class) | |
202 | return 0; | |
203 | ||
204 | i = to_sas_internal(shost->transportt); | |
205 | return &i->t.host_attrs.ac == cont; | |
206 | } | |
207 | ||
208 | static int do_sas_phy_delete(struct device *dev, void *data) | |
209 | { | |
210 | if (scsi_is_sas_phy(dev)) | |
211 | sas_phy_delete(dev_to_phy(dev)); | |
212 | return 0; | |
213 | } | |
214 | ||
215 | /** | |
216 | * sas_remove_host -- tear down a Scsi_Host's SAS data structures | |
217 | * @shost: Scsi Host that is torn down | |
218 | * | |
219 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. | |
220 | * Must be called just before scsi_remove_host for SAS HBAs. | |
221 | */ | |
222 | void sas_remove_host(struct Scsi_Host *shost) | |
223 | { | |
224 | device_for_each_child(&shost->shost_gendev, NULL, do_sas_phy_delete); | |
225 | } | |
226 | EXPORT_SYMBOL(sas_remove_host); | |
227 | ||
228 | ||
229 | /* | |
230 | * SAS Port attributes | |
231 | */ | |
232 | ||
233 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
234 | static ssize_t \ | |
235 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
236 | { \ | |
237 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
238 | \ | |
239 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
240 | } | |
241 | ||
242 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
243 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
244 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
245 | ||
246 | #define sas_phy_show_protocol(field, name) \ | |
247 | static ssize_t \ | |
248 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
249 | { \ | |
250 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
251 | \ | |
252 | if (!phy->field) \ | |
253 | return snprintf(buf, 20, "none\n"); \ | |
254 | return get_sas_protocol_names(phy->field, buf); \ | |
255 | } | |
256 | ||
257 | #define sas_phy_protocol_attr(field, name) \ | |
258 | sas_phy_show_protocol(field, name) \ | |
259 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
260 | ||
261 | #define sas_phy_show_linkspeed(field) \ | |
262 | static ssize_t \ | |
263 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
264 | { \ | |
265 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
266 | \ | |
267 | return get_sas_linkspeed_names(phy->field, buf); \ | |
268 | } | |
269 | ||
270 | #define sas_phy_linkspeed_attr(field) \ | |
271 | sas_phy_show_linkspeed(field) \ | |
272 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
273 | ||
c3ee74c4 CH |
274 | #define sas_phy_show_linkerror(field) \ |
275 | static ssize_t \ | |
276 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
277 | { \ | |
278 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
279 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ | |
280 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
281 | int error; \ | |
282 | \ | |
ac01bbbd CH |
283 | if (!phy->local_attached) \ |
284 | return -EINVAL; \ | |
285 | \ | |
dd9fbb52 | 286 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
287 | if (error) \ |
288 | return error; \ | |
289 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
290 | } | |
291 | ||
292 | #define sas_phy_linkerror_attr(field) \ | |
293 | sas_phy_show_linkerror(field) \ | |
294 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
295 | ||
296 | ||
c7ebbbce CH |
297 | static ssize_t |
298 | show_sas_device_type(struct class_device *cdev, char *buf) | |
299 | { | |
300 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
301 | ||
302 | if (!phy->identify.device_type) | |
303 | return snprintf(buf, 20, "none\n"); | |
304 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
305 | } | |
c7ebbbce CH |
306 | static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
307 | ||
07ba3a95 CH |
308 | static ssize_t do_sas_phy_reset(struct class_device *cdev, |
309 | size_t count, int hard_reset) | |
310 | { | |
311 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
312 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
313 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
314 | int error; | |
315 | ||
316 | if (!phy->local_attached) | |
317 | return -EINVAL; | |
318 | ||
319 | error = i->f->phy_reset(phy, hard_reset); | |
320 | if (error) | |
321 | return error; | |
322 | return count; | |
323 | }; | |
324 | ||
325 | static ssize_t store_sas_link_reset(struct class_device *cdev, | |
326 | const char *buf, size_t count) | |
327 | { | |
328 | return do_sas_phy_reset(cdev, count, 0); | |
329 | } | |
330 | static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); | |
331 | ||
332 | static ssize_t store_sas_hard_reset(struct class_device *cdev, | |
333 | const char *buf, size_t count) | |
334 | { | |
335 | return do_sas_phy_reset(cdev, count, 1); | |
336 | } | |
337 | static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); | |
338 | ||
c7ebbbce CH |
339 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
340 | initiator_port_protocols); | |
341 | sas_phy_protocol_attr(identify.target_port_protocols, | |
342 | target_port_protocols); | |
343 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
344 | unsigned long long); | |
345 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
346 | sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", u8); | |
347 | sas_phy_linkspeed_attr(negotiated_linkrate); | |
348 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
349 | sas_phy_linkspeed_attr(minimum_linkrate); | |
350 | sas_phy_linkspeed_attr(maximum_linkrate_hw); | |
351 | sas_phy_linkspeed_attr(maximum_linkrate); | |
c3ee74c4 CH |
352 | sas_phy_linkerror_attr(invalid_dword_count); |
353 | sas_phy_linkerror_attr(running_disparity_error_count); | |
354 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
355 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce CH |
356 | |
357 | ||
358 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
359 | "sas_phy", NULL, NULL, NULL); | |
360 | ||
361 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
362 | { | |
363 | struct Scsi_Host *shost; | |
364 | struct sas_internal *i; | |
365 | ||
366 | if (!scsi_is_sas_phy(dev)) | |
367 | return 0; | |
368 | shost = dev_to_shost(dev->parent); | |
369 | ||
370 | if (!shost->transportt) | |
371 | return 0; | |
372 | if (shost->transportt->host_attrs.ac.class != | |
373 | &sas_host_class.class) | |
374 | return 0; | |
375 | ||
376 | i = to_sas_internal(shost->transportt); | |
377 | return &i->phy_attr_cont.ac == cont; | |
378 | } | |
379 | ||
380 | static void sas_phy_release(struct device *dev) | |
381 | { | |
382 | struct sas_phy *phy = dev_to_phy(dev); | |
383 | ||
384 | put_device(dev->parent); | |
385 | kfree(phy); | |
386 | } | |
387 | ||
388 | /** | |
389 | * sas_phy_alloc -- allocates and initialize a SAS PHY structure | |
390 | * @parent: Parent device | |
d99ca418 | 391 | * @number: Phy index |
c7ebbbce CH |
392 | * |
393 | * Allocates an SAS PHY structure. It will be added in the device tree | |
394 | * below the device specified by @parent, which has to be either a Scsi_Host | |
395 | * or sas_rphy. | |
396 | * | |
397 | * Returns: | |
398 | * SAS PHY allocated or %NULL if the allocation failed. | |
399 | */ | |
400 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
401 | { | |
402 | struct Scsi_Host *shost = dev_to_shost(parent); | |
403 | struct sas_phy *phy; | |
404 | ||
24669f75 | 405 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
406 | if (!phy) |
407 | return NULL; | |
c7ebbbce CH |
408 | |
409 | get_device(parent); | |
410 | ||
411 | phy->number = number; | |
412 | ||
413 | device_initialize(&phy->dev); | |
414 | phy->dev.parent = get_device(parent); | |
415 | phy->dev.release = sas_phy_release; | |
79cb1819 JB |
416 | if (scsi_is_sas_expander_device(parent)) { |
417 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
418 | sprintf(phy->dev.bus_id, "phy-%d-%d:%d", shost->host_no, | |
419 | rphy->scsi_target_id, number); | |
420 | } else | |
421 | sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); | |
c7ebbbce CH |
422 | |
423 | transport_setup_device(&phy->dev); | |
424 | ||
425 | return phy; | |
426 | } | |
427 | EXPORT_SYMBOL(sas_phy_alloc); | |
428 | ||
429 | /** | |
430 | * sas_phy_add -- add a SAS PHY to the device hierachy | |
431 | * @phy: The PHY to be added | |
432 | * | |
433 | * Publishes a SAS PHY to the rest of the system. | |
434 | */ | |
435 | int sas_phy_add(struct sas_phy *phy) | |
436 | { | |
437 | int error; | |
438 | ||
439 | error = device_add(&phy->dev); | |
440 | if (!error) { | |
441 | transport_add_device(&phy->dev); | |
442 | transport_configure_device(&phy->dev); | |
443 | } | |
444 | ||
445 | return error; | |
446 | } | |
447 | EXPORT_SYMBOL(sas_phy_add); | |
448 | ||
449 | /** | |
450 | * sas_phy_free -- free a SAS PHY | |
451 | * @phy: SAS PHY to free | |
452 | * | |
453 | * Frees the specified SAS PHY. | |
454 | * | |
455 | * Note: | |
456 | * This function must only be called on a PHY that has not | |
457 | * sucessfully been added using sas_phy_add(). | |
458 | */ | |
459 | void sas_phy_free(struct sas_phy *phy) | |
460 | { | |
461 | transport_destroy_device(&phy->dev); | |
462 | put_device(phy->dev.parent); | |
463 | put_device(phy->dev.parent); | |
464 | put_device(phy->dev.parent); | |
465 | kfree(phy); | |
466 | } | |
467 | EXPORT_SYMBOL(sas_phy_free); | |
468 | ||
469 | /** | |
470 | * sas_phy_delete -- remove SAS PHY | |
471 | * @phy: SAS PHY to remove | |
472 | * | |
473 | * Removes the specified SAS PHY. If the SAS PHY has an | |
474 | * associated remote PHY it is removed before. | |
475 | */ | |
476 | void | |
477 | sas_phy_delete(struct sas_phy *phy) | |
478 | { | |
479 | struct device *dev = &phy->dev; | |
480 | ||
481 | if (phy->rphy) | |
482 | sas_rphy_delete(phy->rphy); | |
483 | ||
484 | transport_remove_device(dev); | |
485 | device_del(dev); | |
486 | transport_destroy_device(dev); | |
487 | put_device(dev->parent); | |
488 | } | |
489 | EXPORT_SYMBOL(sas_phy_delete); | |
490 | ||
491 | /** | |
492 | * scsi_is_sas_phy -- check if a struct device represents a SAS PHY | |
493 | * @dev: device to check | |
494 | * | |
495 | * Returns: | |
496 | * %1 if the device represents a SAS PHY, %0 else | |
497 | */ | |
498 | int scsi_is_sas_phy(const struct device *dev) | |
499 | { | |
500 | return dev->release == sas_phy_release; | |
501 | } | |
502 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
503 | ||
504 | /* | |
505 | * SAS remote PHY attributes. | |
506 | */ | |
507 | ||
508 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
509 | static ssize_t \ | |
510 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
511 | { \ | |
512 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
513 | \ | |
514 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
515 | } | |
516 | ||
517 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
518 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
519 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
520 | show_sas_rphy_##name, NULL) | |
521 | ||
522 | #define sas_rphy_show_protocol(field, name) \ | |
523 | static ssize_t \ | |
524 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
525 | { \ | |
526 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
527 | \ | |
528 | if (!rphy->field) \ | |
529 | return snprintf(buf, 20, "none\n"); \ | |
530 | return get_sas_protocol_names(rphy->field, buf); \ | |
531 | } | |
532 | ||
533 | #define sas_rphy_protocol_attr(field, name) \ | |
534 | sas_rphy_show_protocol(field, name) \ | |
535 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
536 | show_sas_rphy_##name, NULL) | |
537 | ||
538 | static ssize_t | |
539 | show_sas_rphy_device_type(struct class_device *cdev, char *buf) | |
540 | { | |
541 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
542 | ||
543 | if (!rphy->identify.device_type) | |
544 | return snprintf(buf, 20, "none\n"); | |
545 | return get_sas_device_type_names( | |
546 | rphy->identify.device_type, buf); | |
547 | } | |
548 | ||
549 | static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO, | |
550 | show_sas_rphy_device_type, NULL); | |
551 | ||
a0125641 CH |
552 | static ssize_t |
553 | show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf) | |
554 | { | |
555 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
556 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
557 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
558 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
559 | u64 identifier; | |
560 | int error; | |
561 | ||
562 | /* | |
563 | * Only devices behind an expander are supported, because the | |
564 | * enclosure identifier is a SMP feature. | |
565 | */ | |
566 | if (phy->local_attached) | |
567 | return -EINVAL; | |
568 | ||
569 | error = i->f->get_enclosure_identifier(rphy, &identifier); | |
570 | if (error) | |
571 | return error; | |
572 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
573 | } | |
574 | ||
575 | static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, | |
576 | show_sas_rphy_enclosure_identifier, NULL); | |
577 | ||
578 | static ssize_t | |
579 | show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf) | |
580 | { | |
581 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
582 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
583 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
584 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
585 | int val; | |
586 | ||
587 | if (phy->local_attached) | |
588 | return -EINVAL; | |
589 | ||
590 | val = i->f->get_bay_identifier(rphy); | |
591 | if (val < 0) | |
592 | return val; | |
593 | return sprintf(buf, "%d\n", val); | |
594 | } | |
595 | ||
596 | static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, | |
597 | show_sas_rphy_bay_identifier, NULL); | |
598 | ||
c7ebbbce CH |
599 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
600 | initiator_port_protocols); | |
601 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
602 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
603 | unsigned long long); | |
604 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
605 | ||
42ab0360 JB |
606 | /* only need 8 bytes of data plus header (4 or 8) */ |
607 | #define BUF_SIZE 64 | |
608 | ||
609 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
610 | { | |
611 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
612 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
613 | struct sas_end_device *rdev; | |
614 | struct scsi_mode_data mode_data; | |
615 | int res, error; | |
616 | ||
617 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
618 | ||
619 | rdev = rphy_to_end_device(rphy); | |
620 | ||
621 | if (!buffer) | |
622 | return -ENOMEM; | |
623 | ||
624 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
625 | &mode_data, NULL); | |
626 | ||
627 | error = -EINVAL; | |
628 | if (!scsi_status_is_good(res)) | |
629 | goto out; | |
630 | ||
631 | msdata = buffer + mode_data.header_length + | |
632 | mode_data.block_descriptor_length; | |
633 | ||
634 | if (msdata - buffer > BUF_SIZE - 8) | |
635 | goto out; | |
636 | ||
637 | error = 0; | |
638 | ||
639 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
640 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
641 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
642 | ||
643 | out: | |
644 | kfree(buffer); | |
645 | return error; | |
646 | } | |
647 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
648 | ||
79cb1819 JB |
649 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
650 | "sas_end_device", NULL, NULL, NULL); | |
651 | ||
42ab0360 JB |
652 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
653 | static ssize_t \ | |
654 | show_sas_end_dev_##name(struct class_device *cdev, char *buf) \ | |
655 | { \ | |
656 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
657 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ | |
658 | \ | |
659 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
660 | } | |
661 | ||
662 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
663 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
664 | static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ | |
665 | show_sas_end_dev_##name, NULL) | |
666 | ||
667 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
668 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
669 | "%d\n", int); | |
670 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
671 | "%d\n", int); | |
672 | ||
79cb1819 JB |
673 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
674 | "sas_expander", NULL, NULL, NULL); | |
675 | ||
676 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
677 | static ssize_t \ | |
678 | show_sas_expander_##name(struct class_device *cdev, char *buf) \ | |
679 | { \ | |
680 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
681 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ | |
682 | \ | |
683 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
684 | } | |
685 | ||
686 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
687 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
688 | static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \ | |
689 | show_sas_expander_##name, NULL) | |
690 | ||
691 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
692 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
693 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
694 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
695 | "%s\n", char *); | |
696 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
697 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
698 | unsigned int); | |
699 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 700 | |
c7ebbbce | 701 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 702 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
703 | |
704 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
705 | { | |
706 | struct Scsi_Host *shost; | |
707 | struct sas_internal *i; | |
708 | ||
709 | if (!scsi_is_sas_rphy(dev)) | |
710 | return 0; | |
711 | shost = dev_to_shost(dev->parent->parent); | |
712 | ||
713 | if (!shost->transportt) | |
714 | return 0; | |
715 | if (shost->transportt->host_attrs.ac.class != | |
716 | &sas_host_class.class) | |
717 | return 0; | |
718 | ||
719 | i = to_sas_internal(shost->transportt); | |
720 | return &i->rphy_attr_cont.ac == cont; | |
721 | } | |
722 | ||
42ab0360 JB |
723 | static int sas_end_dev_match(struct attribute_container *cont, |
724 | struct device *dev) | |
725 | { | |
726 | struct Scsi_Host *shost; | |
727 | struct sas_internal *i; | |
728 | struct sas_rphy *rphy; | |
729 | ||
730 | if (!scsi_is_sas_rphy(dev)) | |
731 | return 0; | |
732 | shost = dev_to_shost(dev->parent->parent); | |
733 | rphy = dev_to_rphy(dev); | |
734 | ||
735 | if (!shost->transportt) | |
736 | return 0; | |
737 | if (shost->transportt->host_attrs.ac.class != | |
738 | &sas_host_class.class) | |
739 | return 0; | |
740 | ||
741 | i = to_sas_internal(shost->transportt); | |
742 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 743 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
744 | } |
745 | ||
79cb1819 JB |
746 | static int sas_expander_match(struct attribute_container *cont, |
747 | struct device *dev) | |
748 | { | |
749 | struct Scsi_Host *shost; | |
750 | struct sas_internal *i; | |
751 | struct sas_rphy *rphy; | |
752 | ||
753 | if (!scsi_is_sas_rphy(dev)) | |
754 | return 0; | |
755 | shost = dev_to_shost(dev->parent->parent); | |
756 | rphy = dev_to_rphy(dev); | |
757 | ||
758 | if (!shost->transportt) | |
759 | return 0; | |
760 | if (shost->transportt->host_attrs.ac.class != | |
761 | &sas_host_class.class) | |
762 | return 0; | |
763 | ||
764 | i = to_sas_internal(shost->transportt); | |
765 | return &i->expander_attr_cont.ac == cont && | |
766 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 767 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
768 | } |
769 | ||
2f8600df | 770 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
771 | { |
772 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 773 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce CH |
774 | |
775 | put_device(dev->parent); | |
2f8600df | 776 | kfree(edev); |
c7ebbbce CH |
777 | } |
778 | ||
2f8600df | 779 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 780 | { |
2f8600df JB |
781 | struct sas_rphy *rphy = dev_to_rphy(dev); |
782 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 783 | |
2f8600df JB |
784 | put_device(dev->parent); |
785 | kfree(edev); | |
c7ebbbce | 786 | } |
c7ebbbce | 787 | |
42ab0360 JB |
788 | /** |
789 | * sas_end_device_alloc - allocate an rphy for an end device | |
790 | * | |
791 | * Allocates an SAS remote PHY structure, connected to @parent. | |
792 | * | |
793 | * Returns: | |
794 | * SAS PHY allocated or %NULL if the allocation failed. | |
795 | */ | |
796 | struct sas_rphy *sas_end_device_alloc(struct sas_phy *parent) | |
797 | { | |
798 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
799 | struct sas_end_device *rdev; | |
800 | ||
801 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
802 | if (!rdev) { | |
803 | put_device(&parent->dev); | |
804 | return NULL; | |
805 | } | |
806 | ||
807 | device_initialize(&rdev->rphy.dev); | |
808 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df JB |
809 | rdev->rphy.dev.release = sas_end_device_release; |
810 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d-%d", | |
42ab0360 JB |
811 | shost->host_no, parent->port_identifier, parent->number); |
812 | rdev->rphy.identify.device_type = SAS_END_DEVICE; | |
42ab0360 JB |
813 | transport_setup_device(&rdev->rphy.dev); |
814 | ||
815 | return &rdev->rphy; | |
816 | } | |
817 | EXPORT_SYMBOL(sas_end_device_alloc); | |
818 | ||
79cb1819 JB |
819 | /** |
820 | * sas_expander_alloc - allocate an rphy for an end device | |
821 | * | |
822 | * Allocates an SAS remote PHY structure, connected to @parent. | |
823 | * | |
824 | * Returns: | |
825 | * SAS PHY allocated or %NULL if the allocation failed. | |
826 | */ | |
827 | struct sas_rphy *sas_expander_alloc(struct sas_phy *parent, | |
828 | enum sas_device_type type) | |
829 | { | |
830 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
831 | struct sas_expander_device *rdev; | |
832 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
833 | ||
834 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
835 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
836 | ||
837 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
838 | if (!rdev) { | |
839 | put_device(&parent->dev); | |
840 | return NULL; | |
841 | } | |
842 | ||
843 | device_initialize(&rdev->rphy.dev); | |
844 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 845 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
846 | mutex_lock(&sas_host->lock); |
847 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
848 | mutex_unlock(&sas_host->lock); | |
849 | sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d", | |
850 | shost->host_no, rdev->rphy.scsi_target_id); | |
851 | rdev->rphy.identify.device_type = type; | |
79cb1819 JB |
852 | transport_setup_device(&rdev->rphy.dev); |
853 | ||
854 | return &rdev->rphy; | |
855 | } | |
856 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 857 | |
c7ebbbce CH |
858 | /** |
859 | * sas_rphy_add -- add a SAS remote PHY to the device hierachy | |
860 | * @rphy: The remote PHY to be added | |
861 | * | |
862 | * Publishes a SAS remote PHY to the rest of the system. | |
863 | */ | |
864 | int sas_rphy_add(struct sas_rphy *rphy) | |
865 | { | |
866 | struct sas_phy *parent = dev_to_phy(rphy->dev.parent); | |
867 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); | |
868 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
869 | struct sas_identify *identify = &rphy->identify; | |
870 | int error; | |
871 | ||
872 | if (parent->rphy) | |
873 | return -ENXIO; | |
874 | parent->rphy = rphy; | |
875 | ||
876 | error = device_add(&rphy->dev); | |
877 | if (error) | |
878 | return error; | |
879 | transport_add_device(&rphy->dev); | |
880 | transport_configure_device(&rphy->dev); | |
881 | ||
e02f3f59 | 882 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
883 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
884 | if (identify->device_type == SAS_END_DEVICE && | |
885 | (identify->target_port_protocols & | |
886 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
887 | rphy->scsi_target_id = sas_host->next_target_id++; | |
e02f3f59 | 888 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 889 | |
79cb1819 JB |
890 | if (identify->device_type == SAS_END_DEVICE && |
891 | rphy->scsi_target_id != -1) { | |
e6bc863c | 892 | scsi_scan_target(&rphy->dev, parent->port_identifier, |
c7ebbbce CH |
893 | rphy->scsi_target_id, ~0, 0); |
894 | } | |
895 | ||
896 | return 0; | |
897 | } | |
898 | EXPORT_SYMBOL(sas_rphy_add); | |
899 | ||
900 | /** | |
901 | * sas_rphy_free -- free a SAS remote PHY | |
902 | * @rphy SAS remote PHY to free | |
903 | * | |
904 | * Frees the specified SAS remote PHY. | |
905 | * | |
906 | * Note: | |
907 | * This function must only be called on a remote | |
908 | * PHY that has not sucessfully been added using | |
909 | * sas_rphy_add(). | |
910 | */ | |
911 | void sas_rphy_free(struct sas_rphy *rphy) | |
912 | { | |
913 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); | |
914 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
915 | ||
e02f3f59 | 916 | mutex_lock(&sas_host->lock); |
c7ebbbce | 917 | list_del(&rphy->list); |
e02f3f59 | 918 | mutex_unlock(&sas_host->lock); |
c7ebbbce CH |
919 | |
920 | transport_destroy_device(&rphy->dev); | |
921 | put_device(rphy->dev.parent); | |
922 | put_device(rphy->dev.parent); | |
923 | put_device(rphy->dev.parent); | |
2f8600df JB |
924 | if (rphy->identify.device_type == SAS_END_DEVICE) { |
925 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
926 | ||
927 | kfree(edev); | |
928 | } else { | |
929 | /* must be expander */ | |
930 | struct sas_expander_device *edev = | |
931 | rphy_to_expander_device(rphy); | |
932 | ||
933 | kfree(edev); | |
934 | } | |
c7ebbbce CH |
935 | } |
936 | EXPORT_SYMBOL(sas_rphy_free); | |
937 | ||
938 | /** | |
939 | * sas_rphy_delete -- remove SAS remote PHY | |
940 | * @rphy: SAS remote PHY to remove | |
941 | * | |
942 | * Removes the specified SAS remote PHY. | |
943 | */ | |
944 | void | |
945 | sas_rphy_delete(struct sas_rphy *rphy) | |
946 | { | |
947 | struct device *dev = &rphy->dev; | |
948 | struct sas_phy *parent = dev_to_phy(dev->parent); | |
949 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); | |
950 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
951 | ||
d4054239 CH |
952 | switch (rphy->identify.device_type) { |
953 | case SAS_END_DEVICE: | |
954 | scsi_remove_target(dev); | |
955 | break; | |
956 | case SAS_EDGE_EXPANDER_DEVICE: | |
957 | case SAS_FANOUT_EXPANDER_DEVICE: | |
958 | device_for_each_child(dev, NULL, do_sas_phy_delete); | |
959 | break; | |
960 | default: | |
961 | break; | |
962 | } | |
c7ebbbce | 963 | |
fe8b2304 CH |
964 | transport_remove_device(dev); |
965 | device_del(dev); | |
966 | transport_destroy_device(dev); | |
c7ebbbce | 967 | |
e02f3f59 | 968 | mutex_lock(&sas_host->lock); |
c7ebbbce | 969 | list_del(&rphy->list); |
e02f3f59 | 970 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 971 | |
33b114e9 CH |
972 | parent->rphy = NULL; |
973 | ||
c7ebbbce CH |
974 | put_device(&parent->dev); |
975 | } | |
976 | EXPORT_SYMBOL(sas_rphy_delete); | |
977 | ||
978 | /** | |
979 | * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY | |
980 | * @dev: device to check | |
981 | * | |
982 | * Returns: | |
983 | * %1 if the device represents a SAS remote PHY, %0 else | |
984 | */ | |
985 | int scsi_is_sas_rphy(const struct device *dev) | |
986 | { | |
2f8600df JB |
987 | return dev->release == sas_end_device_release || |
988 | dev->release == sas_expander_release; | |
c7ebbbce CH |
989 | } |
990 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
991 | ||
992 | ||
993 | /* | |
994 | * SCSI scan helper | |
995 | */ | |
996 | ||
e02f3f59 CH |
997 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
998 | uint id, uint lun) | |
c7ebbbce CH |
999 | { |
1000 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1001 | struct sas_rphy *rphy; | |
c7ebbbce | 1002 | |
e02f3f59 | 1003 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1004 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
1005 | struct sas_phy *parent = dev_to_phy(rphy->dev.parent); | |
e02f3f59 CH |
1006 | |
1007 | if (rphy->scsi_target_id == -1) | |
1008 | continue; | |
1009 | ||
e6bc863c | 1010 | if ((channel == SCAN_WILD_CARD || channel == parent->port_identifier) && |
e02f3f59 | 1011 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
e6bc863c | 1012 | scsi_scan_target(&rphy->dev, parent->port_identifier, |
e02f3f59 CH |
1013 | rphy->scsi_target_id, lun, 1); |
1014 | } | |
c7ebbbce | 1015 | } |
e02f3f59 | 1016 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1017 | |
e02f3f59 | 1018 | return 0; |
c7ebbbce CH |
1019 | } |
1020 | ||
1021 | ||
1022 | /* | |
1023 | * Setup / Teardown code | |
1024 | */ | |
1025 | ||
42ab0360 JB |
1026 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
1027 | i->private_##attrb[count] = class_device_attr_##field; \ | |
1028 | i->private_##attrb[count].attr.mode = perm; \ | |
1029 | i->private_##attrb[count].store = NULL; \ | |
1030 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1031 | if (test) \ | |
1032 | count++ | |
1033 | ||
1034 | ||
1035 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1036 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1037 | |
dd9fbb52 | 1038 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1039 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1040 | |
c7ebbbce | 1041 | #define SETUP_PORT_ATTRIBUTE(field) \ |
42ab0360 | 1042 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1043 | |
dd9fbb52 | 1044 | #define SETUP_OPTIONAL_PORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1045 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1046 | |
07ba3a95 | 1047 | #define SETUP_PORT_ATTRIBUTE_WRONLY(field) \ |
42ab0360 | 1048 | SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, 1) |
07ba3a95 | 1049 | |
dd9fbb52 | 1050 | #define SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(field, func) \ |
42ab0360 | 1051 | SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, i->f->func) |
dd9fbb52 | 1052 | |
42ab0360 JB |
1053 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1054 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1055 | |
79cb1819 JB |
1056 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1057 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1058 | ||
c7ebbbce CH |
1059 | /** |
1060 | * sas_attach_transport -- instantiate SAS transport template | |
1061 | * @ft: SAS transport class function template | |
1062 | */ | |
1063 | struct scsi_transport_template * | |
1064 | sas_attach_transport(struct sas_function_template *ft) | |
1065 | { | |
1066 | struct sas_internal *i; | |
1067 | int count; | |
1068 | ||
24669f75 | 1069 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1070 | if (!i) |
1071 | return NULL; | |
c7ebbbce | 1072 | |
e02f3f59 | 1073 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1074 | |
1075 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1076 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1077 | i->t.host_attrs.ac.match = sas_host_match; | |
1078 | transport_container_register(&i->t.host_attrs); | |
1079 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1080 | ||
1081 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1082 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1083 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1084 | transport_container_register(&i->phy_attr_cont); | |
1085 | ||
1086 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; | |
1087 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1088 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1089 | transport_container_register(&i->rphy_attr_cont); | |
1090 | ||
42ab0360 JB |
1091 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1092 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1093 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1094 | transport_container_register(&i->end_dev_attr_cont); | |
1095 | ||
79cb1819 JB |
1096 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1097 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1098 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1099 | transport_container_register(&i->expander_attr_cont); | |
1100 | ||
c7ebbbce CH |
1101 | i->f = ft; |
1102 | ||
1103 | count = 0; | |
1104 | i->host_attrs[count] = NULL; | |
1105 | ||
1106 | count = 0; | |
1107 | SETUP_PORT_ATTRIBUTE(initiator_port_protocols); | |
1108 | SETUP_PORT_ATTRIBUTE(target_port_protocols); | |
1109 | SETUP_PORT_ATTRIBUTE(device_type); | |
1110 | SETUP_PORT_ATTRIBUTE(sas_address); | |
1111 | SETUP_PORT_ATTRIBUTE(phy_identifier); | |
1112 | SETUP_PORT_ATTRIBUTE(port_identifier); | |
1113 | SETUP_PORT_ATTRIBUTE(negotiated_linkrate); | |
1114 | SETUP_PORT_ATTRIBUTE(minimum_linkrate_hw); | |
1115 | SETUP_PORT_ATTRIBUTE(minimum_linkrate); | |
1116 | SETUP_PORT_ATTRIBUTE(maximum_linkrate_hw); | |
1117 | SETUP_PORT_ATTRIBUTE(maximum_linkrate); | |
c3ee74c4 CH |
1118 | |
1119 | SETUP_PORT_ATTRIBUTE(invalid_dword_count); | |
1120 | SETUP_PORT_ATTRIBUTE(running_disparity_error_count); | |
1121 | SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count); | |
1122 | SETUP_PORT_ATTRIBUTE(phy_reset_problem_count); | |
dd9fbb52 JB |
1123 | SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(link_reset, phy_reset); |
1124 | SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
c7ebbbce CH |
1125 | i->phy_attrs[count] = NULL; |
1126 | ||
1127 | count = 0; | |
1128 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1129 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1130 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1131 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1132 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
dd9fbb52 JB |
1133 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1134 | get_enclosure_identifier); | |
1135 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1136 | get_bay_identifier); | |
c7ebbbce CH |
1137 | i->rphy_attrs[count] = NULL; |
1138 | ||
42ab0360 JB |
1139 | count = 0; |
1140 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1141 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1142 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
1143 | i->end_dev_attrs[count] = NULL; | |
1144 | ||
79cb1819 JB |
1145 | count = 0; |
1146 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1147 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1148 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1149 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1150 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1151 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1152 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1153 | i->expander_attrs[count] = NULL; | |
1154 | ||
c7ebbbce CH |
1155 | return &i->t; |
1156 | } | |
1157 | EXPORT_SYMBOL(sas_attach_transport); | |
1158 | ||
1159 | /** | |
1160 | * sas_release_transport -- release SAS transport template instance | |
1161 | * @t: transport template instance | |
1162 | */ | |
1163 | void sas_release_transport(struct scsi_transport_template *t) | |
1164 | { | |
1165 | struct sas_internal *i = to_sas_internal(t); | |
1166 | ||
1167 | transport_container_unregister(&i->t.host_attrs); | |
1168 | transport_container_unregister(&i->phy_attr_cont); | |
1169 | transport_container_unregister(&i->rphy_attr_cont); | |
db82f841 | 1170 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1171 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1172 | |
1173 | kfree(i); | |
1174 | } | |
1175 | EXPORT_SYMBOL(sas_release_transport); | |
1176 | ||
1177 | static __init int sas_transport_init(void) | |
1178 | { | |
1179 | int error; | |
1180 | ||
1181 | error = transport_class_register(&sas_host_class); | |
1182 | if (error) | |
1183 | goto out; | |
1184 | error = transport_class_register(&sas_phy_class); | |
1185 | if (error) | |
1186 | goto out_unregister_transport; | |
1187 | error = transport_class_register(&sas_rphy_class); | |
1188 | if (error) | |
1189 | goto out_unregister_phy; | |
42ab0360 JB |
1190 | error = transport_class_register(&sas_end_dev_class); |
1191 | if (error) | |
1192 | goto out_unregister_rphy; | |
79cb1819 JB |
1193 | error = transport_class_register(&sas_expander_class); |
1194 | if (error) | |
1195 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1196 | |
1197 | return 0; | |
1198 | ||
79cb1819 JB |
1199 | out_unregister_end_dev: |
1200 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1201 | out_unregister_rphy: |
1202 | transport_class_unregister(&sas_rphy_class); | |
c7ebbbce CH |
1203 | out_unregister_phy: |
1204 | transport_class_unregister(&sas_phy_class); | |
1205 | out_unregister_transport: | |
1206 | transport_class_unregister(&sas_host_class); | |
1207 | out: | |
1208 | return error; | |
1209 | ||
1210 | } | |
1211 | ||
1212 | static void __exit sas_transport_exit(void) | |
1213 | { | |
1214 | transport_class_unregister(&sas_host_class); | |
1215 | transport_class_unregister(&sas_phy_class); | |
1216 | transport_class_unregister(&sas_rphy_class); | |
42ab0360 | 1217 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1218 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1219 | } |
1220 | ||
1221 | MODULE_AUTHOR("Christoph Hellwig"); | |
1222 | MODULE_DESCRIPTION("SAS Transphy Attributes"); | |
1223 | MODULE_LICENSE("GPL"); | |
1224 | ||
1225 | module_init(sas_transport_init); | |
1226 | module_exit(sas_transport_exit); |