Commit | Line | Data |
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c7ebbbce | 1 | /* |
a0125641 | 2 | * Copyright (C) 2005-2006 Dell Inc. |
c7ebbbce CH |
3 | * Released under GPL v2. |
4 | * | |
5 | * Serial Attached SCSI (SAS) transport class. | |
6 | * | |
7 | * The SAS transport class contains common code to deal with SAS HBAs, | |
8 | * an aproximated representation of SAS topologies in the driver model, | |
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> | |
f6a57033 | 28 | #include <linux/jiffies.h> |
c7ebbbce | 29 | #include <linux/err.h> |
8c65b4a6 TS |
30 | #include <linux/slab.h> |
31 | #include <linux/string.h> | |
c7ebbbce | 32 | |
e02f3f59 | 33 | #include <scsi/scsi.h> |
c7ebbbce CH |
34 | #include <scsi/scsi_device.h> |
35 | #include <scsi/scsi_host.h> | |
36 | #include <scsi/scsi_transport.h> | |
37 | #include <scsi/scsi_transport_sas.h> | |
38 | ||
d6159c17 | 39 | #include "scsi_sas_internal.h" |
c7ebbbce CH |
40 | struct sas_host_attrs { |
41 | struct list_head rphy_list; | |
e02f3f59 | 42 | struct mutex lock; |
c7ebbbce | 43 | u32 next_target_id; |
79cb1819 | 44 | u32 next_expander_id; |
c9fefeb2 | 45 | int next_port_id; |
c7ebbbce CH |
46 | }; |
47 | #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) | |
48 | ||
49 | ||
50 | /* | |
51 | * Hack to allow attributes of the same name in different objects. | |
52 | */ | |
53 | #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ | |
54 | struct class_device_attribute class_device_attr_##_prefix##_##_name = \ | |
55 | __ATTR(_name,_mode,_show,_store) | |
56 | ||
57 | ||
58 | /* | |
59 | * Pretty printing helpers | |
60 | */ | |
61 | ||
62 | #define sas_bitfield_name_match(title, table) \ | |
63 | static ssize_t \ | |
64 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
65 | { \ | |
66 | char *prefix = ""; \ | |
67 | ssize_t len = 0; \ | |
68 | int i; \ | |
69 | \ | |
6391a113 | 70 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
71 | if (table[i].value & table_key) { \ |
72 | len += sprintf(buf + len, "%s%s", \ | |
73 | prefix, table[i].name); \ | |
74 | prefix = ", "; \ | |
75 | } \ | |
76 | } \ | |
77 | len += sprintf(buf + len, "\n"); \ | |
78 | return len; \ | |
79 | } | |
80 | ||
d24e1eeb JB |
81 | #define sas_bitfield_name_set(title, table) \ |
82 | static ssize_t \ | |
83 | set_sas_##title##_names(u32 *table_key, const char *buf) \ | |
84 | { \ | |
85 | ssize_t len = 0; \ | |
86 | int i; \ | |
87 | \ | |
88 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ | |
89 | len = strlen(table[i].name); \ | |
90 | if (strncmp(buf, table[i].name, len) == 0 && \ | |
91 | (buf[len] == '\n' || buf[len] == '\0')) { \ | |
92 | *table_key = table[i].value; \ | |
93 | return 0; \ | |
94 | } \ | |
95 | } \ | |
96 | return -EINVAL; \ | |
97 | } | |
98 | ||
c7ebbbce CH |
99 | #define sas_bitfield_name_search(title, table) \ |
100 | static ssize_t \ | |
101 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
102 | { \ | |
103 | ssize_t len = 0; \ | |
104 | int i; \ | |
105 | \ | |
6391a113 | 106 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
107 | if (table[i].value == table_key) { \ |
108 | len += sprintf(buf + len, "%s", \ | |
109 | table[i].name); \ | |
110 | break; \ | |
111 | } \ | |
112 | } \ | |
113 | len += sprintf(buf + len, "\n"); \ | |
114 | return len; \ | |
115 | } | |
116 | ||
117 | static struct { | |
118 | u32 value; | |
119 | char *name; | |
120 | } sas_device_type_names[] = { | |
121 | { SAS_PHY_UNUSED, "unused" }, | |
122 | { SAS_END_DEVICE, "end device" }, | |
123 | { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, | |
124 | { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, | |
125 | }; | |
126 | sas_bitfield_name_search(device_type, sas_device_type_names) | |
127 | ||
128 | ||
129 | static struct { | |
130 | u32 value; | |
131 | char *name; | |
132 | } sas_protocol_names[] = { | |
133 | { SAS_PROTOCOL_SATA, "sata" }, | |
134 | { SAS_PROTOCOL_SMP, "smp" }, | |
135 | { SAS_PROTOCOL_STP, "stp" }, | |
136 | { SAS_PROTOCOL_SSP, "ssp" }, | |
137 | }; | |
138 | sas_bitfield_name_match(protocol, sas_protocol_names) | |
139 | ||
140 | static struct { | |
141 | u32 value; | |
142 | char *name; | |
143 | } sas_linkspeed_names[] = { | |
144 | { SAS_LINK_RATE_UNKNOWN, "Unknown" }, | |
145 | { SAS_PHY_DISABLED, "Phy disabled" }, | |
146 | { SAS_LINK_RATE_FAILED, "Link Rate failed" }, | |
147 | { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, | |
148 | { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, | |
149 | { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, | |
7e6dff62 | 150 | { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, |
c7ebbbce CH |
151 | }; |
152 | sas_bitfield_name_search(linkspeed, sas_linkspeed_names) | |
d24e1eeb | 153 | sas_bitfield_name_set(linkspeed, sas_linkspeed_names) |
c7ebbbce CH |
154 | |
155 | /* | |
156 | * SAS host attributes | |
157 | */ | |
158 | ||
37be6eeb JB |
159 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
160 | struct class_device *cdev) | |
c7ebbbce CH |
161 | { |
162 | struct Scsi_Host *shost = dev_to_shost(dev); | |
163 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
164 | ||
165 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 166 | mutex_init(&sas_host->lock); |
c7ebbbce | 167 | sas_host->next_target_id = 0; |
79cb1819 | 168 | sas_host->next_expander_id = 0; |
c9fefeb2 | 169 | sas_host->next_port_id = 0; |
c7ebbbce CH |
170 | return 0; |
171 | } | |
172 | ||
173 | static DECLARE_TRANSPORT_CLASS(sas_host_class, | |
174 | "sas_host", sas_host_setup, NULL, NULL); | |
175 | ||
176 | static int sas_host_match(struct attribute_container *cont, | |
177 | struct device *dev) | |
178 | { | |
179 | struct Scsi_Host *shost; | |
180 | struct sas_internal *i; | |
181 | ||
182 | if (!scsi_is_host_device(dev)) | |
183 | return 0; | |
184 | shost = dev_to_shost(dev); | |
185 | ||
186 | if (!shost->transportt) | |
187 | return 0; | |
188 | if (shost->transportt->host_attrs.ac.class != | |
189 | &sas_host_class.class) | |
190 | return 0; | |
191 | ||
192 | i = to_sas_internal(shost->transportt); | |
193 | return &i->t.host_attrs.ac == cont; | |
194 | } | |
195 | ||
196 | static int do_sas_phy_delete(struct device *dev, void *data) | |
197 | { | |
65c92b09 JB |
198 | int pass = (int)(unsigned long)data; |
199 | ||
200 | if (pass == 0 && scsi_is_sas_port(dev)) | |
201 | sas_port_delete(dev_to_sas_port(dev)); | |
202 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
203 | sas_phy_delete(dev_to_phy(dev)); |
204 | return 0; | |
205 | } | |
206 | ||
65c92b09 JB |
207 | /** |
208 | * sas_remove_children -- tear down a devices SAS data structures | |
209 | * @dev: device belonging to the sas object | |
210 | * | |
211 | * Removes all SAS PHYs and remote PHYs for a given object | |
212 | */ | |
213 | void sas_remove_children(struct device *dev) | |
214 | { | |
215 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
216 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
217 | } | |
218 | EXPORT_SYMBOL(sas_remove_children); | |
219 | ||
c7ebbbce CH |
220 | /** |
221 | * sas_remove_host -- tear down a Scsi_Host's SAS data structures | |
222 | * @shost: Scsi Host that is torn down | |
223 | * | |
224 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. | |
225 | * Must be called just before scsi_remove_host for SAS HBAs. | |
226 | */ | |
227 | void sas_remove_host(struct Scsi_Host *shost) | |
228 | { | |
65c92b09 | 229 | sas_remove_children(&shost->shost_gendev); |
c7ebbbce CH |
230 | } |
231 | EXPORT_SYMBOL(sas_remove_host); | |
232 | ||
233 | ||
234 | /* | |
65c92b09 | 235 | * SAS Phy attributes |
c7ebbbce CH |
236 | */ |
237 | ||
238 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
239 | static ssize_t \ | |
240 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
241 | { \ | |
242 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
243 | \ | |
244 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
245 | } | |
246 | ||
247 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
248 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
249 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
250 | ||
251 | #define sas_phy_show_protocol(field, name) \ | |
252 | static ssize_t \ | |
253 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
254 | { \ | |
255 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
256 | \ | |
257 | if (!phy->field) \ | |
258 | return snprintf(buf, 20, "none\n"); \ | |
259 | return get_sas_protocol_names(phy->field, buf); \ | |
260 | } | |
261 | ||
262 | #define sas_phy_protocol_attr(field, name) \ | |
263 | sas_phy_show_protocol(field, name) \ | |
264 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
265 | ||
266 | #define sas_phy_show_linkspeed(field) \ | |
267 | static ssize_t \ | |
268 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
269 | { \ | |
270 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
271 | \ | |
272 | return get_sas_linkspeed_names(phy->field, buf); \ | |
273 | } | |
274 | ||
d24e1eeb JB |
275 | /* Fudge to tell if we're minimum or maximum */ |
276 | #define sas_phy_store_linkspeed(field) \ | |
277 | static ssize_t \ | |
278 | store_sas_phy_##field(struct class_device *cdev, const char *buf, \ | |
279 | size_t count) \ | |
280 | { \ | |
281 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
282 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ | |
283 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
284 | u32 value; \ | |
285 | struct sas_phy_linkrates rates = {0}; \ | |
286 | int error; \ | |
287 | \ | |
288 | error = set_sas_linkspeed_names(&value, buf); \ | |
289 | if (error) \ | |
290 | return error; \ | |
291 | rates.field = value; \ | |
292 | error = i->f->set_phy_speed(phy, &rates); \ | |
293 | \ | |
294 | return error ? error : count; \ | |
295 | } | |
296 | ||
297 | #define sas_phy_linkspeed_rw_attr(field) \ | |
298 | sas_phy_show_linkspeed(field) \ | |
299 | sas_phy_store_linkspeed(field) \ | |
300 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ | |
301 | store_sas_phy_##field) | |
302 | ||
c7ebbbce CH |
303 | #define sas_phy_linkspeed_attr(field) \ |
304 | sas_phy_show_linkspeed(field) \ | |
305 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
306 | ||
d24e1eeb | 307 | |
c3ee74c4 CH |
308 | #define sas_phy_show_linkerror(field) \ |
309 | static ssize_t \ | |
310 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
311 | { \ | |
312 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
313 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ | |
314 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
315 | int error; \ | |
316 | \ | |
dd9fbb52 | 317 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
318 | if (error) \ |
319 | return error; \ | |
320 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
321 | } | |
322 | ||
323 | #define sas_phy_linkerror_attr(field) \ | |
324 | sas_phy_show_linkerror(field) \ | |
325 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
326 | ||
327 | ||
c7ebbbce CH |
328 | static ssize_t |
329 | show_sas_device_type(struct class_device *cdev, char *buf) | |
330 | { | |
331 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
332 | ||
333 | if (!phy->identify.device_type) | |
334 | return snprintf(buf, 20, "none\n"); | |
335 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
336 | } | |
c7ebbbce CH |
337 | static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
338 | ||
07ba3a95 CH |
339 | static ssize_t do_sas_phy_reset(struct class_device *cdev, |
340 | size_t count, int hard_reset) | |
341 | { | |
342 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
343 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
344 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
345 | int error; | |
346 | ||
07ba3a95 CH |
347 | error = i->f->phy_reset(phy, hard_reset); |
348 | if (error) | |
349 | return error; | |
350 | return count; | |
351 | }; | |
352 | ||
353 | static ssize_t store_sas_link_reset(struct class_device *cdev, | |
354 | const char *buf, size_t count) | |
355 | { | |
356 | return do_sas_phy_reset(cdev, count, 0); | |
357 | } | |
358 | static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); | |
359 | ||
360 | static ssize_t store_sas_hard_reset(struct class_device *cdev, | |
361 | const char *buf, size_t count) | |
362 | { | |
363 | return do_sas_phy_reset(cdev, count, 1); | |
364 | } | |
365 | static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); | |
366 | ||
c7ebbbce CH |
367 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
368 | initiator_port_protocols); | |
369 | sas_phy_protocol_attr(identify.target_port_protocols, | |
370 | target_port_protocols); | |
371 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
372 | unsigned long long); | |
373 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 374 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
375 | sas_phy_linkspeed_attr(negotiated_linkrate); |
376 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 377 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 378 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 379 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
380 | sas_phy_linkerror_attr(invalid_dword_count); |
381 | sas_phy_linkerror_attr(running_disparity_error_count); | |
382 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
383 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce CH |
384 | |
385 | ||
386 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
387 | "sas_phy", NULL, NULL, NULL); | |
388 | ||
389 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
390 | { | |
391 | struct Scsi_Host *shost; | |
392 | struct sas_internal *i; | |
393 | ||
394 | if (!scsi_is_sas_phy(dev)) | |
395 | return 0; | |
396 | shost = dev_to_shost(dev->parent); | |
397 | ||
398 | if (!shost->transportt) | |
399 | return 0; | |
400 | if (shost->transportt->host_attrs.ac.class != | |
401 | &sas_host_class.class) | |
402 | return 0; | |
403 | ||
404 | i = to_sas_internal(shost->transportt); | |
405 | return &i->phy_attr_cont.ac == cont; | |
406 | } | |
407 | ||
408 | static void sas_phy_release(struct device *dev) | |
409 | { | |
410 | struct sas_phy *phy = dev_to_phy(dev); | |
411 | ||
412 | put_device(dev->parent); | |
413 | kfree(phy); | |
414 | } | |
415 | ||
416 | /** | |
417 | * sas_phy_alloc -- allocates and initialize a SAS PHY structure | |
418 | * @parent: Parent device | |
d99ca418 | 419 | * @number: Phy index |
c7ebbbce CH |
420 | * |
421 | * Allocates an SAS PHY structure. It will be added in the device tree | |
422 | * below the device specified by @parent, which has to be either a Scsi_Host | |
423 | * or sas_rphy. | |
424 | * | |
425 | * Returns: | |
426 | * SAS PHY allocated or %NULL if the allocation failed. | |
427 | */ | |
428 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
429 | { | |
430 | struct Scsi_Host *shost = dev_to_shost(parent); | |
431 | struct sas_phy *phy; | |
432 | ||
24669f75 | 433 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
434 | if (!phy) |
435 | return NULL; | |
c7ebbbce | 436 | |
c7ebbbce CH |
437 | phy->number = number; |
438 | ||
439 | device_initialize(&phy->dev); | |
440 | phy->dev.parent = get_device(parent); | |
441 | phy->dev.release = sas_phy_release; | |
65c92b09 | 442 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
443 | if (scsi_is_sas_expander_device(parent)) { |
444 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
65c92b09 | 445 | sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
446 | rphy->scsi_target_id, number); |
447 | } else | |
448 | sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); | |
c7ebbbce CH |
449 | |
450 | transport_setup_device(&phy->dev); | |
451 | ||
452 | return phy; | |
453 | } | |
454 | EXPORT_SYMBOL(sas_phy_alloc); | |
455 | ||
456 | /** | |
457 | * sas_phy_add -- add a SAS PHY to the device hierachy | |
458 | * @phy: The PHY to be added | |
459 | * | |
460 | * Publishes a SAS PHY to the rest of the system. | |
461 | */ | |
462 | int sas_phy_add(struct sas_phy *phy) | |
463 | { | |
464 | int error; | |
465 | ||
466 | error = device_add(&phy->dev); | |
467 | if (!error) { | |
468 | transport_add_device(&phy->dev); | |
469 | transport_configure_device(&phy->dev); | |
470 | } | |
471 | ||
472 | return error; | |
473 | } | |
474 | EXPORT_SYMBOL(sas_phy_add); | |
475 | ||
476 | /** | |
477 | * sas_phy_free -- free a SAS PHY | |
478 | * @phy: SAS PHY to free | |
479 | * | |
480 | * Frees the specified SAS PHY. | |
481 | * | |
482 | * Note: | |
483 | * This function must only be called on a PHY that has not | |
484 | * sucessfully been added using sas_phy_add(). | |
485 | */ | |
486 | void sas_phy_free(struct sas_phy *phy) | |
487 | { | |
488 | transport_destroy_device(&phy->dev); | |
92aab646 | 489 | put_device(&phy->dev); |
c7ebbbce CH |
490 | } |
491 | EXPORT_SYMBOL(sas_phy_free); | |
492 | ||
493 | /** | |
494 | * sas_phy_delete -- remove SAS PHY | |
495 | * @phy: SAS PHY to remove | |
496 | * | |
497 | * Removes the specified SAS PHY. If the SAS PHY has an | |
498 | * associated remote PHY it is removed before. | |
499 | */ | |
500 | void | |
501 | sas_phy_delete(struct sas_phy *phy) | |
502 | { | |
503 | struct device *dev = &phy->dev; | |
504 | ||
65c92b09 JB |
505 | /* this happens if the phy is still part of a port when deleted */ |
506 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
507 | |
508 | transport_remove_device(dev); | |
509 | device_del(dev); | |
510 | transport_destroy_device(dev); | |
92aab646 | 511 | put_device(dev); |
c7ebbbce CH |
512 | } |
513 | EXPORT_SYMBOL(sas_phy_delete); | |
514 | ||
515 | /** | |
516 | * scsi_is_sas_phy -- check if a struct device represents a SAS PHY | |
517 | * @dev: device to check | |
518 | * | |
519 | * Returns: | |
520 | * %1 if the device represents a SAS PHY, %0 else | |
521 | */ | |
522 | int scsi_is_sas_phy(const struct device *dev) | |
523 | { | |
524 | return dev->release == sas_phy_release; | |
525 | } | |
526 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
527 | ||
65c92b09 JB |
528 | /* |
529 | * SAS Port attributes | |
530 | */ | |
531 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
532 | static ssize_t \ | |
533 | show_sas_port_##name(struct class_device *cdev, char *buf) \ | |
534 | { \ | |
535 | struct sas_port *port = transport_class_to_sas_port(cdev); \ | |
536 | \ | |
537 | return snprintf(buf, 20, format_string, cast port->field); \ | |
538 | } | |
539 | ||
540 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
541 | sas_port_show_simple(field, name, format_string, (type)) \ | |
542 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) | |
543 | ||
544 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
545 | ||
546 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
547 | "sas_port", NULL, NULL, NULL); | |
548 | ||
549 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
550 | { | |
551 | struct Scsi_Host *shost; | |
552 | struct sas_internal *i; | |
553 | ||
554 | if (!scsi_is_sas_port(dev)) | |
555 | return 0; | |
556 | shost = dev_to_shost(dev->parent); | |
557 | ||
558 | if (!shost->transportt) | |
559 | return 0; | |
560 | if (shost->transportt->host_attrs.ac.class != | |
561 | &sas_host_class.class) | |
562 | return 0; | |
563 | ||
564 | i = to_sas_internal(shost->transportt); | |
565 | return &i->port_attr_cont.ac == cont; | |
566 | } | |
567 | ||
568 | ||
569 | static void sas_port_release(struct device *dev) | |
570 | { | |
571 | struct sas_port *port = dev_to_sas_port(dev); | |
572 | ||
573 | BUG_ON(!list_empty(&port->phy_list)); | |
574 | ||
575 | put_device(dev->parent); | |
576 | kfree(port); | |
577 | } | |
578 | ||
579 | static void sas_port_create_link(struct sas_port *port, | |
580 | struct sas_phy *phy) | |
581 | { | |
582 | sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, phy->dev.bus_id); | |
583 | sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
584 | } | |
585 | ||
586 | static void sas_port_delete_link(struct sas_port *port, | |
587 | struct sas_phy *phy) | |
588 | { | |
589 | sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id); | |
590 | sysfs_remove_link(&phy->dev.kobj, "port"); | |
591 | } | |
592 | ||
593 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
594 | * | |
595 | * @parent: parent device | |
596 | * @port_id: port number | |
597 | * | |
598 | * Allocates a SAS port structure. It will be added to the device tree | |
599 | * below the device specified by @parent which must be either a Scsi_Host | |
600 | * or a sas_expander_device. | |
601 | * | |
602 | * Returns %NULL on error | |
603 | */ | |
604 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
605 | { | |
606 | struct Scsi_Host *shost = dev_to_shost(parent); | |
607 | struct sas_port *port; | |
608 | ||
609 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
610 | if (!port) | |
611 | return NULL; | |
612 | ||
613 | port->port_identifier = port_id; | |
614 | ||
615 | device_initialize(&port->dev); | |
616 | ||
617 | port->dev.parent = get_device(parent); | |
618 | port->dev.release = sas_port_release; | |
619 | ||
620 | mutex_init(&port->phy_list_mutex); | |
621 | INIT_LIST_HEAD(&port->phy_list); | |
622 | ||
623 | if (scsi_is_sas_expander_device(parent)) { | |
624 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
625 | sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no, | |
626 | rphy->scsi_target_id, port->port_identifier); | |
627 | } else | |
628 | sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no, | |
629 | port->port_identifier); | |
630 | ||
631 | transport_setup_device(&port->dev); | |
632 | ||
633 | return port; | |
634 | } | |
635 | EXPORT_SYMBOL(sas_port_alloc); | |
636 | ||
c9fefeb2 JB |
637 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
638 | * | |
639 | * @parent: parent device | |
640 | * | |
641 | * Allocates a SAS port structure and a number to go with it. This | |
642 | * interface is really for adapters where the port number has no | |
643 | * meansing, so the sas class should manage them. It will be added to | |
644 | * the device tree below the device specified by @parent which must be | |
645 | * either a Scsi_Host or a sas_expander_device. | |
646 | * | |
647 | * Returns %NULL on error | |
648 | */ | |
649 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
650 | { | |
651 | int index; | |
652 | struct Scsi_Host *shost = dev_to_shost(parent); | |
653 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
654 | ||
655 | /* FIXME: use idr for this eventually */ | |
656 | mutex_lock(&sas_host->lock); | |
657 | if (scsi_is_sas_expander_device(parent)) { | |
658 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
659 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
660 | ||
661 | index = exp->next_port_id++; | |
662 | } else | |
663 | index = sas_host->next_port_id++; | |
664 | mutex_unlock(&sas_host->lock); | |
665 | return sas_port_alloc(parent, index); | |
666 | } | |
667 | EXPORT_SYMBOL(sas_port_alloc_num); | |
668 | ||
65c92b09 JB |
669 | /** |
670 | * sas_port_add - add a SAS port to the device hierarchy | |
671 | * | |
672 | * @port: port to be added | |
673 | * | |
674 | * publishes a port to the rest of the system | |
675 | */ | |
676 | int sas_port_add(struct sas_port *port) | |
677 | { | |
678 | int error; | |
679 | ||
680 | /* No phys should be added until this is made visible */ | |
681 | BUG_ON(!list_empty(&port->phy_list)); | |
682 | ||
683 | error = device_add(&port->dev); | |
684 | ||
685 | if (error) | |
686 | return error; | |
687 | ||
688 | transport_add_device(&port->dev); | |
689 | transport_configure_device(&port->dev); | |
690 | ||
691 | return 0; | |
692 | } | |
693 | EXPORT_SYMBOL(sas_port_add); | |
694 | ||
695 | /** | |
696 | * sas_port_free -- free a SAS PORT | |
697 | * @port: SAS PORT to free | |
698 | * | |
699 | * Frees the specified SAS PORT. | |
700 | * | |
701 | * Note: | |
702 | * This function must only be called on a PORT that has not | |
703 | * sucessfully been added using sas_port_add(). | |
704 | */ | |
705 | void sas_port_free(struct sas_port *port) | |
706 | { | |
707 | transport_destroy_device(&port->dev); | |
708 | put_device(&port->dev); | |
709 | } | |
710 | EXPORT_SYMBOL(sas_port_free); | |
711 | ||
712 | /** | |
713 | * sas_port_delete -- remove SAS PORT | |
714 | * @port: SAS PORT to remove | |
715 | * | |
716 | * Removes the specified SAS PORT. If the SAS PORT has an | |
717 | * associated phys, unlink them from the port as well. | |
718 | */ | |
719 | void sas_port_delete(struct sas_port *port) | |
720 | { | |
721 | struct device *dev = &port->dev; | |
722 | struct sas_phy *phy, *tmp_phy; | |
723 | ||
724 | if (port->rphy) { | |
725 | sas_rphy_delete(port->rphy); | |
726 | port->rphy = NULL; | |
727 | } | |
728 | ||
729 | mutex_lock(&port->phy_list_mutex); | |
730 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
731 | port_siblings) { | |
732 | sas_port_delete_link(port, phy); | |
733 | list_del_init(&phy->port_siblings); | |
734 | } | |
735 | mutex_unlock(&port->phy_list_mutex); | |
736 | ||
a0e1b6ef JB |
737 | if (port->is_backlink) { |
738 | struct device *parent = port->dev.parent; | |
739 | ||
740 | sysfs_remove_link(&port->dev.kobj, parent->bus_id); | |
741 | port->is_backlink = 0; | |
742 | } | |
743 | ||
65c92b09 JB |
744 | transport_remove_device(dev); |
745 | device_del(dev); | |
746 | transport_destroy_device(dev); | |
747 | put_device(dev); | |
748 | } | |
749 | EXPORT_SYMBOL(sas_port_delete); | |
750 | ||
751 | /** | |
752 | * scsi_is_sas_port -- check if a struct device represents a SAS port | |
753 | * @dev: device to check | |
754 | * | |
755 | * Returns: | |
756 | * %1 if the device represents a SAS Port, %0 else | |
757 | */ | |
758 | int scsi_is_sas_port(const struct device *dev) | |
759 | { | |
760 | return dev->release == sas_port_release; | |
761 | } | |
762 | EXPORT_SYMBOL(scsi_is_sas_port); | |
763 | ||
764 | /** | |
765 | * sas_port_add_phy - add another phy to a port to form a wide port | |
766 | * @port: port to add the phy to | |
767 | * @phy: phy to add | |
768 | * | |
769 | * When a port is initially created, it is empty (has no phys). All | |
770 | * ports must have at least one phy to operated, and all wide ports | |
771 | * must have at least two. The current code makes no difference | |
772 | * between ports and wide ports, but the only object that can be | |
773 | * connected to a remote device is a port, so ports must be formed on | |
774 | * all devices with phys if they're connected to anything. | |
775 | */ | |
776 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
777 | { | |
778 | mutex_lock(&port->phy_list_mutex); | |
779 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
780 | /* make sure we're already on this port */ | |
781 | struct sas_phy *tmp; | |
782 | ||
783 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
784 | if (tmp == phy) | |
785 | break; | |
786 | /* If this trips, you added a phy that was already | |
787 | * part of a different port */ | |
788 | if (unlikely(tmp != phy)) { | |
789 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id); | |
790 | BUG(); | |
791 | } | |
792 | } else { | |
793 | sas_port_create_link(port, phy); | |
794 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
795 | port->num_phys++; | |
796 | } | |
797 | mutex_unlock(&port->phy_list_mutex); | |
798 | } | |
799 | EXPORT_SYMBOL(sas_port_add_phy); | |
800 | ||
801 | /** | |
802 | * sas_port_delete_phy - remove a phy from a port or wide port | |
803 | * @port: port to remove the phy from | |
804 | * @phy: phy to remove | |
805 | * | |
806 | * This operation is used for tearing down ports again. It must be | |
807 | * done to every port or wide port before calling sas_port_delete. | |
808 | */ | |
809 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
810 | { | |
811 | mutex_lock(&port->phy_list_mutex); | |
812 | sas_port_delete_link(port, phy); | |
813 | list_del_init(&phy->port_siblings); | |
814 | port->num_phys--; | |
815 | mutex_unlock(&port->phy_list_mutex); | |
816 | } | |
817 | EXPORT_SYMBOL(sas_port_delete_phy); | |
818 | ||
a0e1b6ef JB |
819 | void sas_port_mark_backlink(struct sas_port *port) |
820 | { | |
821 | struct device *parent = port->dev.parent->parent->parent; | |
822 | ||
823 | if (port->is_backlink) | |
824 | return; | |
825 | port->is_backlink = 1; | |
826 | sysfs_create_link(&port->dev.kobj, &parent->kobj, | |
827 | parent->bus_id); | |
828 | ||
829 | } | |
830 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
831 | ||
c7ebbbce CH |
832 | /* |
833 | * SAS remote PHY attributes. | |
834 | */ | |
835 | ||
836 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
837 | static ssize_t \ | |
838 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
839 | { \ | |
840 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
841 | \ | |
842 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
843 | } | |
844 | ||
845 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
846 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
847 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
848 | show_sas_rphy_##name, NULL) | |
849 | ||
850 | #define sas_rphy_show_protocol(field, name) \ | |
851 | static ssize_t \ | |
852 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
853 | { \ | |
854 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
855 | \ | |
856 | if (!rphy->field) \ | |
857 | return snprintf(buf, 20, "none\n"); \ | |
858 | return get_sas_protocol_names(rphy->field, buf); \ | |
859 | } | |
860 | ||
861 | #define sas_rphy_protocol_attr(field, name) \ | |
862 | sas_rphy_show_protocol(field, name) \ | |
863 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
864 | show_sas_rphy_##name, NULL) | |
865 | ||
866 | static ssize_t | |
867 | show_sas_rphy_device_type(struct class_device *cdev, char *buf) | |
868 | { | |
869 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
870 | ||
871 | if (!rphy->identify.device_type) | |
872 | return snprintf(buf, 20, "none\n"); | |
873 | return get_sas_device_type_names( | |
874 | rphy->identify.device_type, buf); | |
875 | } | |
876 | ||
877 | static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO, | |
878 | show_sas_rphy_device_type, NULL); | |
879 | ||
a0125641 CH |
880 | static ssize_t |
881 | show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf) | |
882 | { | |
883 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
884 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
885 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
886 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
887 | u64 identifier; | |
888 | int error; | |
889 | ||
890 | /* | |
891 | * Only devices behind an expander are supported, because the | |
892 | * enclosure identifier is a SMP feature. | |
893 | */ | |
f4ad7b58 | 894 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
895 | return -EINVAL; |
896 | ||
897 | error = i->f->get_enclosure_identifier(rphy, &identifier); | |
898 | if (error) | |
899 | return error; | |
900 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
901 | } | |
902 | ||
903 | static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, | |
904 | show_sas_rphy_enclosure_identifier, NULL); | |
905 | ||
906 | static ssize_t | |
907 | show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf) | |
908 | { | |
909 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
910 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
911 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
912 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
913 | int val; | |
914 | ||
f4ad7b58 | 915 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
916 | return -EINVAL; |
917 | ||
918 | val = i->f->get_bay_identifier(rphy); | |
919 | if (val < 0) | |
920 | return val; | |
921 | return sprintf(buf, "%d\n", val); | |
922 | } | |
923 | ||
924 | static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, | |
925 | show_sas_rphy_bay_identifier, NULL); | |
926 | ||
c7ebbbce CH |
927 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
928 | initiator_port_protocols); | |
929 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
930 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
931 | unsigned long long); | |
932 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
933 | ||
42ab0360 JB |
934 | /* only need 8 bytes of data plus header (4 or 8) */ |
935 | #define BUF_SIZE 64 | |
936 | ||
937 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
938 | { | |
939 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
940 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
941 | struct sas_end_device *rdev; | |
942 | struct scsi_mode_data mode_data; | |
943 | int res, error; | |
944 | ||
945 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
946 | ||
947 | rdev = rphy_to_end_device(rphy); | |
948 | ||
949 | if (!buffer) | |
950 | return -ENOMEM; | |
951 | ||
952 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
953 | &mode_data, NULL); | |
954 | ||
955 | error = -EINVAL; | |
956 | if (!scsi_status_is_good(res)) | |
957 | goto out; | |
958 | ||
959 | msdata = buffer + mode_data.header_length + | |
960 | mode_data.block_descriptor_length; | |
961 | ||
962 | if (msdata - buffer > BUF_SIZE - 8) | |
963 | goto out; | |
964 | ||
965 | error = 0; | |
966 | ||
967 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
968 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
969 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
970 | ||
971 | out: | |
972 | kfree(buffer); | |
973 | return error; | |
974 | } | |
975 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
976 | ||
79cb1819 JB |
977 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
978 | "sas_end_device", NULL, NULL, NULL); | |
979 | ||
42ab0360 JB |
980 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
981 | static ssize_t \ | |
982 | show_sas_end_dev_##name(struct class_device *cdev, char *buf) \ | |
983 | { \ | |
984 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
985 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ | |
986 | \ | |
987 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
988 | } | |
989 | ||
990 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
991 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
992 | static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ | |
993 | show_sas_end_dev_##name, NULL) | |
994 | ||
995 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
996 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
997 | "%d\n", int); | |
998 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
999 | "%d\n", int); | |
1000 | ||
79cb1819 JB |
1001 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1002 | "sas_expander", NULL, NULL, NULL); | |
1003 | ||
1004 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1005 | static ssize_t \ | |
1006 | show_sas_expander_##name(struct class_device *cdev, char *buf) \ | |
1007 | { \ | |
1008 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1009 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ | |
1010 | \ | |
1011 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1012 | } | |
1013 | ||
1014 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1015 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
1016 | static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \ | |
1017 | show_sas_expander_##name, NULL) | |
1018 | ||
1019 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1020 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1021 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1022 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1023 | "%s\n", char *); | |
1024 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1025 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1026 | unsigned int); | |
1027 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1028 | |
c7ebbbce | 1029 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1030 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1031 | |
1032 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1033 | { | |
1034 | struct Scsi_Host *shost; | |
1035 | struct sas_internal *i; | |
1036 | ||
1037 | if (!scsi_is_sas_rphy(dev)) | |
1038 | return 0; | |
1039 | shost = dev_to_shost(dev->parent->parent); | |
1040 | ||
1041 | if (!shost->transportt) | |
1042 | return 0; | |
1043 | if (shost->transportt->host_attrs.ac.class != | |
1044 | &sas_host_class.class) | |
1045 | return 0; | |
1046 | ||
1047 | i = to_sas_internal(shost->transportt); | |
1048 | return &i->rphy_attr_cont.ac == cont; | |
1049 | } | |
1050 | ||
42ab0360 JB |
1051 | static int sas_end_dev_match(struct attribute_container *cont, |
1052 | struct device *dev) | |
1053 | { | |
1054 | struct Scsi_Host *shost; | |
1055 | struct sas_internal *i; | |
1056 | struct sas_rphy *rphy; | |
1057 | ||
1058 | if (!scsi_is_sas_rphy(dev)) | |
1059 | return 0; | |
1060 | shost = dev_to_shost(dev->parent->parent); | |
1061 | rphy = dev_to_rphy(dev); | |
1062 | ||
1063 | if (!shost->transportt) | |
1064 | return 0; | |
1065 | if (shost->transportt->host_attrs.ac.class != | |
1066 | &sas_host_class.class) | |
1067 | return 0; | |
1068 | ||
1069 | i = to_sas_internal(shost->transportt); | |
1070 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1071 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1072 | } |
1073 | ||
79cb1819 JB |
1074 | static int sas_expander_match(struct attribute_container *cont, |
1075 | struct device *dev) | |
1076 | { | |
1077 | struct Scsi_Host *shost; | |
1078 | struct sas_internal *i; | |
1079 | struct sas_rphy *rphy; | |
1080 | ||
1081 | if (!scsi_is_sas_rphy(dev)) | |
1082 | return 0; | |
1083 | shost = dev_to_shost(dev->parent->parent); | |
1084 | rphy = dev_to_rphy(dev); | |
1085 | ||
1086 | if (!shost->transportt) | |
1087 | return 0; | |
1088 | if (shost->transportt->host_attrs.ac.class != | |
1089 | &sas_host_class.class) | |
1090 | return 0; | |
1091 | ||
1092 | i = to_sas_internal(shost->transportt); | |
1093 | return &i->expander_attr_cont.ac == cont && | |
1094 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1095 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1096 | } |
1097 | ||
2f8600df | 1098 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1099 | { |
1100 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1101 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce CH |
1102 | |
1103 | put_device(dev->parent); | |
2f8600df | 1104 | kfree(edev); |
c7ebbbce CH |
1105 | } |
1106 | ||
2f8600df | 1107 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1108 | { |
2f8600df JB |
1109 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1110 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1111 | |
2f8600df JB |
1112 | put_device(dev->parent); |
1113 | kfree(edev); | |
c7ebbbce | 1114 | } |
c7ebbbce | 1115 | |
c5943d36 JB |
1116 | /** |
1117 | * sas_rphy_initialize - common rphy intialization | |
1118 | * @rphy: rphy to initialise | |
1119 | * | |
1120 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1121 | * initialise the common rphy component of each. | |
1122 | */ | |
1123 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1124 | { | |
1125 | INIT_LIST_HEAD(&rphy->list); | |
1126 | } | |
1127 | ||
42ab0360 JB |
1128 | /** |
1129 | * sas_end_device_alloc - allocate an rphy for an end device | |
1130 | * | |
1131 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1132 | * | |
1133 | * Returns: | |
1134 | * SAS PHY allocated or %NULL if the allocation failed. | |
1135 | */ | |
65c92b09 | 1136 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1137 | { |
1138 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1139 | struct sas_end_device *rdev; | |
1140 | ||
1141 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1142 | if (!rdev) { | |
42ab0360 JB |
1143 | return NULL; |
1144 | } | |
1145 | ||
1146 | device_initialize(&rdev->rphy.dev); | |
1147 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1148 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1149 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1150 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
1151 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d", | |
1152 | shost->host_no, rphy->scsi_target_id, parent->port_identifier); | |
1153 | } else | |
1154 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d", | |
1155 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1156 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1157 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1158 | transport_setup_device(&rdev->rphy.dev); |
1159 | ||
1160 | return &rdev->rphy; | |
1161 | } | |
1162 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1163 | ||
79cb1819 JB |
1164 | /** |
1165 | * sas_expander_alloc - allocate an rphy for an end device | |
1166 | * | |
1167 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1168 | * | |
1169 | * Returns: | |
1170 | * SAS PHY allocated or %NULL if the allocation failed. | |
1171 | */ | |
65c92b09 | 1172 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1173 | enum sas_device_type type) |
1174 | { | |
1175 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1176 | struct sas_expander_device *rdev; | |
1177 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1178 | ||
1179 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1180 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1181 | ||
1182 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1183 | if (!rdev) { | |
79cb1819 JB |
1184 | return NULL; |
1185 | } | |
1186 | ||
1187 | device_initialize(&rdev->rphy.dev); | |
1188 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1189 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1190 | mutex_lock(&sas_host->lock); |
1191 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1192 | mutex_unlock(&sas_host->lock); | |
1193 | sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d", | |
1194 | shost->host_no, rdev->rphy.scsi_target_id); | |
1195 | rdev->rphy.identify.device_type = type; | |
c5943d36 | 1196 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1197 | transport_setup_device(&rdev->rphy.dev); |
1198 | ||
1199 | return &rdev->rphy; | |
1200 | } | |
1201 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1202 | |
c7ebbbce CH |
1203 | /** |
1204 | * sas_rphy_add -- add a SAS remote PHY to the device hierachy | |
1205 | * @rphy: The remote PHY to be added | |
1206 | * | |
1207 | * Publishes a SAS remote PHY to the rest of the system. | |
1208 | */ | |
1209 | int sas_rphy_add(struct sas_rphy *rphy) | |
1210 | { | |
65c92b09 | 1211 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1212 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1213 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1214 | struct sas_identify *identify = &rphy->identify; | |
1215 | int error; | |
1216 | ||
1217 | if (parent->rphy) | |
1218 | return -ENXIO; | |
1219 | parent->rphy = rphy; | |
1220 | ||
1221 | error = device_add(&rphy->dev); | |
1222 | if (error) | |
1223 | return error; | |
1224 | transport_add_device(&rphy->dev); | |
1225 | transport_configure_device(&rphy->dev); | |
1226 | ||
e02f3f59 | 1227 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1228 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1229 | if (identify->device_type == SAS_END_DEVICE && | |
1230 | (identify->target_port_protocols & | |
1231 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1232 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1233 | else if (identify->device_type == SAS_END_DEVICE) |
1234 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1235 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1236 | |
79cb1819 JB |
1237 | if (identify->device_type == SAS_END_DEVICE && |
1238 | rphy->scsi_target_id != -1) { | |
e8bf3941 | 1239 | scsi_scan_target(&rphy->dev, 0, |
c7ebbbce CH |
1240 | rphy->scsi_target_id, ~0, 0); |
1241 | } | |
1242 | ||
1243 | return 0; | |
1244 | } | |
1245 | EXPORT_SYMBOL(sas_rphy_add); | |
1246 | ||
1247 | /** | |
1248 | * sas_rphy_free -- free a SAS remote PHY | |
1249 | * @rphy SAS remote PHY to free | |
1250 | * | |
1251 | * Frees the specified SAS remote PHY. | |
1252 | * | |
1253 | * Note: | |
1254 | * This function must only be called on a remote | |
1255 | * PHY that has not sucessfully been added using | |
1256 | * sas_rphy_add(). | |
1257 | */ | |
1258 | void sas_rphy_free(struct sas_rphy *rphy) | |
1259 | { | |
92aab646 | 1260 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1261 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1262 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1263 | ||
e02f3f59 | 1264 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1265 | list_del(&rphy->list); |
e02f3f59 | 1266 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1267 | |
92aab646 | 1268 | transport_destroy_device(dev); |
2f8600df | 1269 | |
92aab646 | 1270 | put_device(dev); |
c7ebbbce CH |
1271 | } |
1272 | EXPORT_SYMBOL(sas_rphy_free); | |
1273 | ||
1274 | /** | |
1275 | * sas_rphy_delete -- remove SAS remote PHY | |
1276 | * @rphy: SAS remote PHY to remove | |
1277 | * | |
1278 | * Removes the specified SAS remote PHY. | |
1279 | */ | |
1280 | void | |
1281 | sas_rphy_delete(struct sas_rphy *rphy) | |
1282 | { | |
1283 | struct device *dev = &rphy->dev; | |
65c92b09 | 1284 | struct sas_port *parent = dev_to_sas_port(dev->parent); |
c7ebbbce CH |
1285 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1286 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1287 | ||
d4054239 CH |
1288 | switch (rphy->identify.device_type) { |
1289 | case SAS_END_DEVICE: | |
1290 | scsi_remove_target(dev); | |
1291 | break; | |
1292 | case SAS_EDGE_EXPANDER_DEVICE: | |
1293 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1294 | sas_remove_children(dev); |
d4054239 CH |
1295 | break; |
1296 | default: | |
1297 | break; | |
1298 | } | |
c7ebbbce | 1299 | |
fe8b2304 CH |
1300 | transport_remove_device(dev); |
1301 | device_del(dev); | |
1302 | transport_destroy_device(dev); | |
c7ebbbce | 1303 | |
e02f3f59 | 1304 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1305 | list_del(&rphy->list); |
e02f3f59 | 1306 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1307 | |
33b114e9 CH |
1308 | parent->rphy = NULL; |
1309 | ||
92aab646 | 1310 | put_device(dev); |
c7ebbbce CH |
1311 | } |
1312 | EXPORT_SYMBOL(sas_rphy_delete); | |
1313 | ||
1314 | /** | |
1315 | * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY | |
1316 | * @dev: device to check | |
1317 | * | |
1318 | * Returns: | |
1319 | * %1 if the device represents a SAS remote PHY, %0 else | |
1320 | */ | |
1321 | int scsi_is_sas_rphy(const struct device *dev) | |
1322 | { | |
2f8600df JB |
1323 | return dev->release == sas_end_device_release || |
1324 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1325 | } |
1326 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1327 | ||
1328 | ||
1329 | /* | |
1330 | * SCSI scan helper | |
1331 | */ | |
1332 | ||
e02f3f59 CH |
1333 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
1334 | uint id, uint lun) | |
c7ebbbce CH |
1335 | { |
1336 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1337 | struct sas_rphy *rphy; | |
c7ebbbce | 1338 | |
e02f3f59 | 1339 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1340 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1341 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1342 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1343 | continue; |
1344 | ||
e8bf3941 | 1345 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1346 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
e8bf3941 | 1347 | scsi_scan_target(&rphy->dev, 0, |
e02f3f59 CH |
1348 | rphy->scsi_target_id, lun, 1); |
1349 | } | |
c7ebbbce | 1350 | } |
e02f3f59 | 1351 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1352 | |
e02f3f59 | 1353 | return 0; |
c7ebbbce CH |
1354 | } |
1355 | ||
1356 | ||
1357 | /* | |
1358 | * Setup / Teardown code | |
1359 | */ | |
1360 | ||
d24e1eeb | 1361 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
42ab0360 JB |
1362 | i->private_##attrb[count] = class_device_attr_##field; \ |
1363 | i->private_##attrb[count].attr.mode = perm; \ | |
42ab0360 JB |
1364 | i->attrb[count] = &i->private_##attrb[count]; \ |
1365 | if (test) \ | |
1366 | count++ | |
1367 | ||
d24e1eeb JB |
1368 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
1369 | i->private_##attrb[count] = class_device_attr_##field; \ | |
1370 | i->private_##attrb[count].attr.mode = perm; \ | |
1371 | if (ro_test) { \ | |
1372 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1373 | i->private_##attrb[count].store = NULL; \ | |
1374 | } \ | |
1375 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1376 | if (test) \ | |
1377 | count++ | |
42ab0360 JB |
1378 | |
1379 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1380 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1381 | |
dd9fbb52 | 1382 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1383 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1384 | |
65c92b09 | 1385 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1386 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1387 | |
d24e1eeb JB |
1388 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1389 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1390 | !i->f->set_phy_speed, S_IRUGO) | |
1391 | ||
65c92b09 JB |
1392 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1393 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1394 | ||
1395 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1396 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1397 | |
65c92b09 | 1398 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
42ab0360 | 1399 | SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, 1) |
07ba3a95 | 1400 | |
65c92b09 | 1401 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
42ab0360 | 1402 | SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, i->f->func) |
dd9fbb52 | 1403 | |
42ab0360 JB |
1404 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1405 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1406 | |
79cb1819 JB |
1407 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1408 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1409 | ||
c7ebbbce CH |
1410 | /** |
1411 | * sas_attach_transport -- instantiate SAS transport template | |
1412 | * @ft: SAS transport class function template | |
1413 | */ | |
1414 | struct scsi_transport_template * | |
1415 | sas_attach_transport(struct sas_function_template *ft) | |
1416 | { | |
1417 | struct sas_internal *i; | |
1418 | int count; | |
1419 | ||
24669f75 | 1420 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1421 | if (!i) |
1422 | return NULL; | |
c7ebbbce | 1423 | |
e02f3f59 | 1424 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1425 | |
1426 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1427 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1428 | i->t.host_attrs.ac.match = sas_host_match; | |
1429 | transport_container_register(&i->t.host_attrs); | |
1430 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1431 | ||
1432 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1433 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1434 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1435 | transport_container_register(&i->phy_attr_cont); | |
1436 | ||
65c92b09 JB |
1437 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1438 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1439 | i->port_attr_cont.ac.match = sas_port_match; | |
1440 | transport_container_register(&i->port_attr_cont); | |
1441 | ||
c7ebbbce CH |
1442 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1443 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1444 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1445 | transport_container_register(&i->rphy_attr_cont); | |
1446 | ||
42ab0360 JB |
1447 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1448 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1449 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1450 | transport_container_register(&i->end_dev_attr_cont); | |
1451 | ||
79cb1819 JB |
1452 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1453 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1454 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1455 | transport_container_register(&i->expander_attr_cont); | |
1456 | ||
c7ebbbce CH |
1457 | i->f = ft; |
1458 | ||
1459 | count = 0; | |
65c92b09 | 1460 | SETUP_PORT_ATTRIBUTE(num_phys); |
c7ebbbce CH |
1461 | i->host_attrs[count] = NULL; |
1462 | ||
1463 | count = 0; | |
65c92b09 JB |
1464 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1465 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1466 | SETUP_PHY_ATTRIBUTE(device_type); | |
1467 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1468 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1469 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1470 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1471 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1472 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1473 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1474 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1475 | |
1476 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1477 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1478 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1479 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1480 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1481 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
c7ebbbce CH |
1482 | i->phy_attrs[count] = NULL; |
1483 | ||
65c92b09 JB |
1484 | count = 0; |
1485 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1486 | i->port_attrs[count] = NULL; | |
1487 | ||
c7ebbbce CH |
1488 | count = 0; |
1489 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1490 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1491 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1492 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1493 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
dd9fbb52 JB |
1494 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1495 | get_enclosure_identifier); | |
1496 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1497 | get_bay_identifier); | |
c7ebbbce CH |
1498 | i->rphy_attrs[count] = NULL; |
1499 | ||
42ab0360 JB |
1500 | count = 0; |
1501 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1502 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1503 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
1504 | i->end_dev_attrs[count] = NULL; | |
1505 | ||
79cb1819 JB |
1506 | count = 0; |
1507 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1508 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1509 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1510 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1511 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1512 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1513 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1514 | i->expander_attrs[count] = NULL; | |
1515 | ||
c7ebbbce CH |
1516 | return &i->t; |
1517 | } | |
1518 | EXPORT_SYMBOL(sas_attach_transport); | |
1519 | ||
1520 | /** | |
1521 | * sas_release_transport -- release SAS transport template instance | |
1522 | * @t: transport template instance | |
1523 | */ | |
1524 | void sas_release_transport(struct scsi_transport_template *t) | |
1525 | { | |
1526 | struct sas_internal *i = to_sas_internal(t); | |
1527 | ||
1528 | transport_container_unregister(&i->t.host_attrs); | |
1529 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1530 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1531 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1532 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1533 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1534 | |
1535 | kfree(i); | |
1536 | } | |
1537 | EXPORT_SYMBOL(sas_release_transport); | |
1538 | ||
1539 | static __init int sas_transport_init(void) | |
1540 | { | |
1541 | int error; | |
1542 | ||
1543 | error = transport_class_register(&sas_host_class); | |
1544 | if (error) | |
1545 | goto out; | |
1546 | error = transport_class_register(&sas_phy_class); | |
1547 | if (error) | |
1548 | goto out_unregister_transport; | |
65c92b09 | 1549 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1550 | if (error) |
1551 | goto out_unregister_phy; | |
65c92b09 JB |
1552 | error = transport_class_register(&sas_rphy_class); |
1553 | if (error) | |
1554 | goto out_unregister_port; | |
42ab0360 JB |
1555 | error = transport_class_register(&sas_end_dev_class); |
1556 | if (error) | |
1557 | goto out_unregister_rphy; | |
79cb1819 JB |
1558 | error = transport_class_register(&sas_expander_class); |
1559 | if (error) | |
1560 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1561 | |
1562 | return 0; | |
1563 | ||
79cb1819 JB |
1564 | out_unregister_end_dev: |
1565 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1566 | out_unregister_rphy: |
1567 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1568 | out_unregister_port: |
1569 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1570 | out_unregister_phy: |
1571 | transport_class_unregister(&sas_phy_class); | |
1572 | out_unregister_transport: | |
1573 | transport_class_unregister(&sas_host_class); | |
1574 | out: | |
1575 | return error; | |
1576 | ||
1577 | } | |
1578 | ||
1579 | static void __exit sas_transport_exit(void) | |
1580 | { | |
1581 | transport_class_unregister(&sas_host_class); | |
1582 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1583 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1584 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1585 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1586 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1587 | } |
1588 | ||
1589 | MODULE_AUTHOR("Christoph Hellwig"); | |
1590 | MODULE_DESCRIPTION("SAS Transphy Attributes"); | |
1591 | MODULE_LICENSE("GPL"); | |
1592 | ||
1593 | module_init(sas_transport_init); | |
1594 | module_exit(sas_transport_exit); |