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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 | ||
acbf167d DW |
339 | static ssize_t do_sas_phy_enable(struct class_device *cdev, |
340 | size_t count, int enable) | |
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 | ||
347 | error = i->f->phy_enable(phy, enable); | |
348 | if (error) | |
349 | return error; | |
350 | phy->enabled = enable; | |
351 | return count; | |
352 | }; | |
353 | ||
354 | static ssize_t store_sas_phy_enable(struct class_device *cdev, | |
355 | const char *buf, size_t count) | |
356 | { | |
357 | if (count < 1) | |
358 | return -EINVAL; | |
359 | ||
360 | switch (buf[0]) { | |
361 | case '0': | |
362 | do_sas_phy_enable(cdev, count, 0); | |
363 | break; | |
364 | case '1': | |
365 | do_sas_phy_enable(cdev, count, 1); | |
366 | break; | |
367 | default: | |
368 | return -EINVAL; | |
369 | } | |
370 | ||
371 | return count; | |
372 | } | |
373 | ||
374 | static ssize_t show_sas_phy_enable(struct class_device *cdev, char *buf) | |
375 | { | |
376 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
377 | ||
378 | return snprintf(buf, 20, "%d", phy->enabled); | |
379 | } | |
380 | ||
381 | static CLASS_DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, | |
382 | store_sas_phy_enable); | |
383 | ||
07ba3a95 CH |
384 | static ssize_t do_sas_phy_reset(struct class_device *cdev, |
385 | size_t count, int hard_reset) | |
386 | { | |
387 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
388 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
389 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
390 | int error; | |
391 | ||
07ba3a95 CH |
392 | error = i->f->phy_reset(phy, hard_reset); |
393 | if (error) | |
394 | return error; | |
395 | return count; | |
396 | }; | |
397 | ||
398 | static ssize_t store_sas_link_reset(struct class_device *cdev, | |
399 | const char *buf, size_t count) | |
400 | { | |
401 | return do_sas_phy_reset(cdev, count, 0); | |
402 | } | |
403 | static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); | |
404 | ||
405 | static ssize_t store_sas_hard_reset(struct class_device *cdev, | |
406 | const char *buf, size_t count) | |
407 | { | |
408 | return do_sas_phy_reset(cdev, count, 1); | |
409 | } | |
410 | static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); | |
411 | ||
c7ebbbce CH |
412 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
413 | initiator_port_protocols); | |
414 | sas_phy_protocol_attr(identify.target_port_protocols, | |
415 | target_port_protocols); | |
416 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
417 | unsigned long long); | |
418 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 419 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
420 | sas_phy_linkspeed_attr(negotiated_linkrate); |
421 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 422 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 423 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 424 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
425 | sas_phy_linkerror_attr(invalid_dword_count); |
426 | sas_phy_linkerror_attr(running_disparity_error_count); | |
427 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
428 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce CH |
429 | |
430 | ||
431 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
432 | "sas_phy", NULL, NULL, NULL); | |
433 | ||
434 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
435 | { | |
436 | struct Scsi_Host *shost; | |
437 | struct sas_internal *i; | |
438 | ||
439 | if (!scsi_is_sas_phy(dev)) | |
440 | return 0; | |
441 | shost = dev_to_shost(dev->parent); | |
442 | ||
443 | if (!shost->transportt) | |
444 | return 0; | |
445 | if (shost->transportt->host_attrs.ac.class != | |
446 | &sas_host_class.class) | |
447 | return 0; | |
448 | ||
449 | i = to_sas_internal(shost->transportt); | |
450 | return &i->phy_attr_cont.ac == cont; | |
451 | } | |
452 | ||
453 | static void sas_phy_release(struct device *dev) | |
454 | { | |
455 | struct sas_phy *phy = dev_to_phy(dev); | |
456 | ||
457 | put_device(dev->parent); | |
458 | kfree(phy); | |
459 | } | |
460 | ||
461 | /** | |
462 | * sas_phy_alloc -- allocates and initialize a SAS PHY structure | |
463 | * @parent: Parent device | |
d99ca418 | 464 | * @number: Phy index |
c7ebbbce CH |
465 | * |
466 | * Allocates an SAS PHY structure. It will be added in the device tree | |
467 | * below the device specified by @parent, which has to be either a Scsi_Host | |
468 | * or sas_rphy. | |
469 | * | |
470 | * Returns: | |
471 | * SAS PHY allocated or %NULL if the allocation failed. | |
472 | */ | |
473 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
474 | { | |
475 | struct Scsi_Host *shost = dev_to_shost(parent); | |
476 | struct sas_phy *phy; | |
477 | ||
24669f75 | 478 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
479 | if (!phy) |
480 | return NULL; | |
c7ebbbce | 481 | |
c7ebbbce | 482 | phy->number = number; |
acbf167d | 483 | phy->enabled = 1; |
c7ebbbce CH |
484 | |
485 | device_initialize(&phy->dev); | |
486 | phy->dev.parent = get_device(parent); | |
487 | phy->dev.release = sas_phy_release; | |
65c92b09 | 488 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
489 | if (scsi_is_sas_expander_device(parent)) { |
490 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
65c92b09 | 491 | sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
492 | rphy->scsi_target_id, number); |
493 | } else | |
494 | sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); | |
c7ebbbce CH |
495 | |
496 | transport_setup_device(&phy->dev); | |
497 | ||
498 | return phy; | |
499 | } | |
500 | EXPORT_SYMBOL(sas_phy_alloc); | |
501 | ||
502 | /** | |
1b3c3714 | 503 | * sas_phy_add -- add a SAS PHY to the device hierarchy |
c7ebbbce CH |
504 | * @phy: The PHY to be added |
505 | * | |
506 | * Publishes a SAS PHY to the rest of the system. | |
507 | */ | |
508 | int sas_phy_add(struct sas_phy *phy) | |
509 | { | |
510 | int error; | |
511 | ||
512 | error = device_add(&phy->dev); | |
513 | if (!error) { | |
514 | transport_add_device(&phy->dev); | |
515 | transport_configure_device(&phy->dev); | |
516 | } | |
517 | ||
518 | return error; | |
519 | } | |
520 | EXPORT_SYMBOL(sas_phy_add); | |
521 | ||
522 | /** | |
523 | * sas_phy_free -- free a SAS PHY | |
524 | * @phy: SAS PHY to free | |
525 | * | |
526 | * Frees the specified SAS PHY. | |
527 | * | |
528 | * Note: | |
529 | * This function must only be called on a PHY that has not | |
530 | * sucessfully been added using sas_phy_add(). | |
531 | */ | |
532 | void sas_phy_free(struct sas_phy *phy) | |
533 | { | |
534 | transport_destroy_device(&phy->dev); | |
92aab646 | 535 | put_device(&phy->dev); |
c7ebbbce CH |
536 | } |
537 | EXPORT_SYMBOL(sas_phy_free); | |
538 | ||
539 | /** | |
540 | * sas_phy_delete -- remove SAS PHY | |
541 | * @phy: SAS PHY to remove | |
542 | * | |
543 | * Removes the specified SAS PHY. If the SAS PHY has an | |
544 | * associated remote PHY it is removed before. | |
545 | */ | |
546 | void | |
547 | sas_phy_delete(struct sas_phy *phy) | |
548 | { | |
549 | struct device *dev = &phy->dev; | |
550 | ||
65c92b09 JB |
551 | /* this happens if the phy is still part of a port when deleted */ |
552 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
553 | |
554 | transport_remove_device(dev); | |
555 | device_del(dev); | |
556 | transport_destroy_device(dev); | |
92aab646 | 557 | put_device(dev); |
c7ebbbce CH |
558 | } |
559 | EXPORT_SYMBOL(sas_phy_delete); | |
560 | ||
561 | /** | |
562 | * scsi_is_sas_phy -- check if a struct device represents a SAS PHY | |
563 | * @dev: device to check | |
564 | * | |
565 | * Returns: | |
566 | * %1 if the device represents a SAS PHY, %0 else | |
567 | */ | |
568 | int scsi_is_sas_phy(const struct device *dev) | |
569 | { | |
570 | return dev->release == sas_phy_release; | |
571 | } | |
572 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
573 | ||
65c92b09 JB |
574 | /* |
575 | * SAS Port attributes | |
576 | */ | |
577 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
578 | static ssize_t \ | |
579 | show_sas_port_##name(struct class_device *cdev, char *buf) \ | |
580 | { \ | |
581 | struct sas_port *port = transport_class_to_sas_port(cdev); \ | |
582 | \ | |
583 | return snprintf(buf, 20, format_string, cast port->field); \ | |
584 | } | |
585 | ||
586 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
587 | sas_port_show_simple(field, name, format_string, (type)) \ | |
588 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) | |
589 | ||
590 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
591 | ||
592 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
593 | "sas_port", NULL, NULL, NULL); | |
594 | ||
595 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
596 | { | |
597 | struct Scsi_Host *shost; | |
598 | struct sas_internal *i; | |
599 | ||
600 | if (!scsi_is_sas_port(dev)) | |
601 | return 0; | |
602 | shost = dev_to_shost(dev->parent); | |
603 | ||
604 | if (!shost->transportt) | |
605 | return 0; | |
606 | if (shost->transportt->host_attrs.ac.class != | |
607 | &sas_host_class.class) | |
608 | return 0; | |
609 | ||
610 | i = to_sas_internal(shost->transportt); | |
611 | return &i->port_attr_cont.ac == cont; | |
612 | } | |
613 | ||
614 | ||
615 | static void sas_port_release(struct device *dev) | |
616 | { | |
617 | struct sas_port *port = dev_to_sas_port(dev); | |
618 | ||
619 | BUG_ON(!list_empty(&port->phy_list)); | |
620 | ||
621 | put_device(dev->parent); | |
622 | kfree(port); | |
623 | } | |
624 | ||
625 | static void sas_port_create_link(struct sas_port *port, | |
626 | struct sas_phy *phy) | |
627 | { | |
21434966 DW |
628 | int res; |
629 | ||
630 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
631 | phy->dev.bus_id); | |
632 | if (res) | |
633 | goto err; | |
634 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
635 | if (res) | |
636 | goto err; | |
637 | return; | |
638 | err: | |
639 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
640 | __FUNCTION__, res); | |
65c92b09 JB |
641 | } |
642 | ||
643 | static void sas_port_delete_link(struct sas_port *port, | |
644 | struct sas_phy *phy) | |
645 | { | |
646 | sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id); | |
647 | sysfs_remove_link(&phy->dev.kobj, "port"); | |
648 | } | |
649 | ||
650 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
651 | * | |
652 | * @parent: parent device | |
653 | * @port_id: port number | |
654 | * | |
655 | * Allocates a SAS port structure. It will be added to the device tree | |
656 | * below the device specified by @parent which must be either a Scsi_Host | |
657 | * or a sas_expander_device. | |
658 | * | |
659 | * Returns %NULL on error | |
660 | */ | |
661 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
662 | { | |
663 | struct Scsi_Host *shost = dev_to_shost(parent); | |
664 | struct sas_port *port; | |
665 | ||
666 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
667 | if (!port) | |
668 | return NULL; | |
669 | ||
670 | port->port_identifier = port_id; | |
671 | ||
672 | device_initialize(&port->dev); | |
673 | ||
674 | port->dev.parent = get_device(parent); | |
675 | port->dev.release = sas_port_release; | |
676 | ||
677 | mutex_init(&port->phy_list_mutex); | |
678 | INIT_LIST_HEAD(&port->phy_list); | |
679 | ||
680 | if (scsi_is_sas_expander_device(parent)) { | |
681 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
682 | sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no, | |
683 | rphy->scsi_target_id, port->port_identifier); | |
684 | } else | |
685 | sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no, | |
686 | port->port_identifier); | |
687 | ||
688 | transport_setup_device(&port->dev); | |
689 | ||
690 | return port; | |
691 | } | |
692 | EXPORT_SYMBOL(sas_port_alloc); | |
693 | ||
c9fefeb2 JB |
694 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
695 | * | |
696 | * @parent: parent device | |
697 | * | |
698 | * Allocates a SAS port structure and a number to go with it. This | |
699 | * interface is really for adapters where the port number has no | |
700 | * meansing, so the sas class should manage them. It will be added to | |
701 | * the device tree below the device specified by @parent which must be | |
702 | * either a Scsi_Host or a sas_expander_device. | |
703 | * | |
704 | * Returns %NULL on error | |
705 | */ | |
706 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
707 | { | |
708 | int index; | |
709 | struct Scsi_Host *shost = dev_to_shost(parent); | |
710 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
711 | ||
712 | /* FIXME: use idr for this eventually */ | |
713 | mutex_lock(&sas_host->lock); | |
714 | if (scsi_is_sas_expander_device(parent)) { | |
715 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
716 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
717 | ||
718 | index = exp->next_port_id++; | |
719 | } else | |
720 | index = sas_host->next_port_id++; | |
721 | mutex_unlock(&sas_host->lock); | |
722 | return sas_port_alloc(parent, index); | |
723 | } | |
724 | EXPORT_SYMBOL(sas_port_alloc_num); | |
725 | ||
65c92b09 JB |
726 | /** |
727 | * sas_port_add - add a SAS port to the device hierarchy | |
728 | * | |
729 | * @port: port to be added | |
730 | * | |
731 | * publishes a port to the rest of the system | |
732 | */ | |
733 | int sas_port_add(struct sas_port *port) | |
734 | { | |
735 | int error; | |
736 | ||
737 | /* No phys should be added until this is made visible */ | |
738 | BUG_ON(!list_empty(&port->phy_list)); | |
739 | ||
740 | error = device_add(&port->dev); | |
741 | ||
742 | if (error) | |
743 | return error; | |
744 | ||
745 | transport_add_device(&port->dev); | |
746 | transport_configure_device(&port->dev); | |
747 | ||
748 | return 0; | |
749 | } | |
750 | EXPORT_SYMBOL(sas_port_add); | |
751 | ||
752 | /** | |
753 | * sas_port_free -- free a SAS PORT | |
754 | * @port: SAS PORT to free | |
755 | * | |
756 | * Frees the specified SAS PORT. | |
757 | * | |
758 | * Note: | |
759 | * This function must only be called on a PORT that has not | |
760 | * sucessfully been added using sas_port_add(). | |
761 | */ | |
762 | void sas_port_free(struct sas_port *port) | |
763 | { | |
764 | transport_destroy_device(&port->dev); | |
765 | put_device(&port->dev); | |
766 | } | |
767 | EXPORT_SYMBOL(sas_port_free); | |
768 | ||
769 | /** | |
770 | * sas_port_delete -- remove SAS PORT | |
771 | * @port: SAS PORT to remove | |
772 | * | |
773 | * Removes the specified SAS PORT. If the SAS PORT has an | |
774 | * associated phys, unlink them from the port as well. | |
775 | */ | |
776 | void sas_port_delete(struct sas_port *port) | |
777 | { | |
778 | struct device *dev = &port->dev; | |
779 | struct sas_phy *phy, *tmp_phy; | |
780 | ||
781 | if (port->rphy) { | |
782 | sas_rphy_delete(port->rphy); | |
783 | port->rphy = NULL; | |
784 | } | |
785 | ||
786 | mutex_lock(&port->phy_list_mutex); | |
787 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
788 | port_siblings) { | |
789 | sas_port_delete_link(port, phy); | |
790 | list_del_init(&phy->port_siblings); | |
791 | } | |
792 | mutex_unlock(&port->phy_list_mutex); | |
793 | ||
a0e1b6ef JB |
794 | if (port->is_backlink) { |
795 | struct device *parent = port->dev.parent; | |
796 | ||
797 | sysfs_remove_link(&port->dev.kobj, parent->bus_id); | |
798 | port->is_backlink = 0; | |
799 | } | |
800 | ||
65c92b09 JB |
801 | transport_remove_device(dev); |
802 | device_del(dev); | |
803 | transport_destroy_device(dev); | |
804 | put_device(dev); | |
805 | } | |
806 | EXPORT_SYMBOL(sas_port_delete); | |
807 | ||
808 | /** | |
809 | * scsi_is_sas_port -- check if a struct device represents a SAS port | |
810 | * @dev: device to check | |
811 | * | |
812 | * Returns: | |
813 | * %1 if the device represents a SAS Port, %0 else | |
814 | */ | |
815 | int scsi_is_sas_port(const struct device *dev) | |
816 | { | |
817 | return dev->release == sas_port_release; | |
818 | } | |
819 | EXPORT_SYMBOL(scsi_is_sas_port); | |
820 | ||
821 | /** | |
822 | * sas_port_add_phy - add another phy to a port to form a wide port | |
823 | * @port: port to add the phy to | |
824 | * @phy: phy to add | |
825 | * | |
826 | * When a port is initially created, it is empty (has no phys). All | |
827 | * ports must have at least one phy to operated, and all wide ports | |
828 | * must have at least two. The current code makes no difference | |
829 | * between ports and wide ports, but the only object that can be | |
830 | * connected to a remote device is a port, so ports must be formed on | |
831 | * all devices with phys if they're connected to anything. | |
832 | */ | |
833 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
834 | { | |
835 | mutex_lock(&port->phy_list_mutex); | |
836 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
837 | /* make sure we're already on this port */ | |
838 | struct sas_phy *tmp; | |
839 | ||
840 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
841 | if (tmp == phy) | |
842 | break; | |
843 | /* If this trips, you added a phy that was already | |
844 | * part of a different port */ | |
845 | if (unlikely(tmp != phy)) { | |
846 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id); | |
847 | BUG(); | |
848 | } | |
849 | } else { | |
850 | sas_port_create_link(port, phy); | |
851 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
852 | port->num_phys++; | |
853 | } | |
854 | mutex_unlock(&port->phy_list_mutex); | |
855 | } | |
856 | EXPORT_SYMBOL(sas_port_add_phy); | |
857 | ||
858 | /** | |
859 | * sas_port_delete_phy - remove a phy from a port or wide port | |
860 | * @port: port to remove the phy from | |
861 | * @phy: phy to remove | |
862 | * | |
863 | * This operation is used for tearing down ports again. It must be | |
864 | * done to every port or wide port before calling sas_port_delete. | |
865 | */ | |
866 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
867 | { | |
868 | mutex_lock(&port->phy_list_mutex); | |
869 | sas_port_delete_link(port, phy); | |
870 | list_del_init(&phy->port_siblings); | |
871 | port->num_phys--; | |
872 | mutex_unlock(&port->phy_list_mutex); | |
873 | } | |
874 | EXPORT_SYMBOL(sas_port_delete_phy); | |
875 | ||
a0e1b6ef JB |
876 | void sas_port_mark_backlink(struct sas_port *port) |
877 | { | |
21434966 | 878 | int res; |
a0e1b6ef JB |
879 | struct device *parent = port->dev.parent->parent->parent; |
880 | ||
881 | if (port->is_backlink) | |
882 | return; | |
883 | port->is_backlink = 1; | |
21434966 DW |
884 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
885 | parent->bus_id); | |
886 | if (res) | |
887 | goto err; | |
888 | return; | |
889 | err: | |
890 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
891 | __FUNCTION__, res); | |
a0e1b6ef JB |
892 | |
893 | } | |
894 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
895 | ||
c7ebbbce CH |
896 | /* |
897 | * SAS remote PHY attributes. | |
898 | */ | |
899 | ||
900 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
901 | static ssize_t \ | |
902 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
903 | { \ | |
904 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
905 | \ | |
906 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
907 | } | |
908 | ||
909 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
910 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
911 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
912 | show_sas_rphy_##name, NULL) | |
913 | ||
914 | #define sas_rphy_show_protocol(field, name) \ | |
915 | static ssize_t \ | |
916 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
917 | { \ | |
918 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
919 | \ | |
920 | if (!rphy->field) \ | |
921 | return snprintf(buf, 20, "none\n"); \ | |
922 | return get_sas_protocol_names(rphy->field, buf); \ | |
923 | } | |
924 | ||
925 | #define sas_rphy_protocol_attr(field, name) \ | |
926 | sas_rphy_show_protocol(field, name) \ | |
927 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
928 | show_sas_rphy_##name, NULL) | |
929 | ||
930 | static ssize_t | |
931 | show_sas_rphy_device_type(struct class_device *cdev, char *buf) | |
932 | { | |
933 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
934 | ||
935 | if (!rphy->identify.device_type) | |
936 | return snprintf(buf, 20, "none\n"); | |
937 | return get_sas_device_type_names( | |
938 | rphy->identify.device_type, buf); | |
939 | } | |
940 | ||
941 | static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO, | |
942 | show_sas_rphy_device_type, NULL); | |
943 | ||
a0125641 CH |
944 | static ssize_t |
945 | show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf) | |
946 | { | |
947 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
948 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
949 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
950 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
951 | u64 identifier; | |
952 | int error; | |
953 | ||
954 | /* | |
955 | * Only devices behind an expander are supported, because the | |
956 | * enclosure identifier is a SMP feature. | |
957 | */ | |
f4ad7b58 | 958 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
959 | return -EINVAL; |
960 | ||
961 | error = i->f->get_enclosure_identifier(rphy, &identifier); | |
962 | if (error) | |
963 | return error; | |
964 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
965 | } | |
966 | ||
967 | static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, | |
968 | show_sas_rphy_enclosure_identifier, NULL); | |
969 | ||
970 | static ssize_t | |
971 | show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf) | |
972 | { | |
973 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
974 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
975 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
976 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
977 | int val; | |
978 | ||
f4ad7b58 | 979 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
980 | return -EINVAL; |
981 | ||
982 | val = i->f->get_bay_identifier(rphy); | |
983 | if (val < 0) | |
984 | return val; | |
985 | return sprintf(buf, "%d\n", val); | |
986 | } | |
987 | ||
988 | static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, | |
989 | show_sas_rphy_bay_identifier, NULL); | |
990 | ||
c7ebbbce CH |
991 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
992 | initiator_port_protocols); | |
993 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
994 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
995 | unsigned long long); | |
996 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
997 | ||
42ab0360 JB |
998 | /* only need 8 bytes of data plus header (4 or 8) */ |
999 | #define BUF_SIZE 64 | |
1000 | ||
1001 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1002 | { | |
1003 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
1004 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
1005 | struct sas_end_device *rdev; | |
1006 | struct scsi_mode_data mode_data; | |
1007 | int res, error; | |
1008 | ||
1009 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
1010 | ||
1011 | rdev = rphy_to_end_device(rphy); | |
1012 | ||
1013 | if (!buffer) | |
1014 | return -ENOMEM; | |
1015 | ||
1016 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1017 | &mode_data, NULL); | |
1018 | ||
1019 | error = -EINVAL; | |
1020 | if (!scsi_status_is_good(res)) | |
1021 | goto out; | |
1022 | ||
1023 | msdata = buffer + mode_data.header_length + | |
1024 | mode_data.block_descriptor_length; | |
1025 | ||
1026 | if (msdata - buffer > BUF_SIZE - 8) | |
1027 | goto out; | |
1028 | ||
1029 | error = 0; | |
1030 | ||
1031 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1032 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1033 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1034 | ||
1035 | out: | |
1036 | kfree(buffer); | |
1037 | return error; | |
1038 | } | |
1039 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1040 | ||
79cb1819 JB |
1041 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1042 | "sas_end_device", NULL, NULL, NULL); | |
1043 | ||
42ab0360 JB |
1044 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1045 | static ssize_t \ | |
1046 | show_sas_end_dev_##name(struct class_device *cdev, char *buf) \ | |
1047 | { \ | |
1048 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1049 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ | |
1050 | \ | |
1051 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1052 | } | |
1053 | ||
1054 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1055 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
1056 | static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ | |
1057 | show_sas_end_dev_##name, NULL) | |
1058 | ||
1059 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1060 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1061 | "%d\n", int); | |
1062 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1063 | "%d\n", int); | |
1064 | ||
79cb1819 JB |
1065 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1066 | "sas_expander", NULL, NULL, NULL); | |
1067 | ||
1068 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1069 | static ssize_t \ | |
1070 | show_sas_expander_##name(struct class_device *cdev, char *buf) \ | |
1071 | { \ | |
1072 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1073 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ | |
1074 | \ | |
1075 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1076 | } | |
1077 | ||
1078 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1079 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
1080 | static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \ | |
1081 | show_sas_expander_##name, NULL) | |
1082 | ||
1083 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1084 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1085 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1086 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1087 | "%s\n", char *); | |
1088 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1089 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1090 | unsigned int); | |
1091 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1092 | |
c7ebbbce | 1093 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1094 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1095 | |
1096 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1097 | { | |
1098 | struct Scsi_Host *shost; | |
1099 | struct sas_internal *i; | |
1100 | ||
1101 | if (!scsi_is_sas_rphy(dev)) | |
1102 | return 0; | |
1103 | shost = dev_to_shost(dev->parent->parent); | |
1104 | ||
1105 | if (!shost->transportt) | |
1106 | return 0; | |
1107 | if (shost->transportt->host_attrs.ac.class != | |
1108 | &sas_host_class.class) | |
1109 | return 0; | |
1110 | ||
1111 | i = to_sas_internal(shost->transportt); | |
1112 | return &i->rphy_attr_cont.ac == cont; | |
1113 | } | |
1114 | ||
42ab0360 JB |
1115 | static int sas_end_dev_match(struct attribute_container *cont, |
1116 | struct device *dev) | |
1117 | { | |
1118 | struct Scsi_Host *shost; | |
1119 | struct sas_internal *i; | |
1120 | struct sas_rphy *rphy; | |
1121 | ||
1122 | if (!scsi_is_sas_rphy(dev)) | |
1123 | return 0; | |
1124 | shost = dev_to_shost(dev->parent->parent); | |
1125 | rphy = dev_to_rphy(dev); | |
1126 | ||
1127 | if (!shost->transportt) | |
1128 | return 0; | |
1129 | if (shost->transportt->host_attrs.ac.class != | |
1130 | &sas_host_class.class) | |
1131 | return 0; | |
1132 | ||
1133 | i = to_sas_internal(shost->transportt); | |
1134 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1135 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1136 | } |
1137 | ||
79cb1819 JB |
1138 | static int sas_expander_match(struct attribute_container *cont, |
1139 | struct device *dev) | |
1140 | { | |
1141 | struct Scsi_Host *shost; | |
1142 | struct sas_internal *i; | |
1143 | struct sas_rphy *rphy; | |
1144 | ||
1145 | if (!scsi_is_sas_rphy(dev)) | |
1146 | return 0; | |
1147 | shost = dev_to_shost(dev->parent->parent); | |
1148 | rphy = dev_to_rphy(dev); | |
1149 | ||
1150 | if (!shost->transportt) | |
1151 | return 0; | |
1152 | if (shost->transportt->host_attrs.ac.class != | |
1153 | &sas_host_class.class) | |
1154 | return 0; | |
1155 | ||
1156 | i = to_sas_internal(shost->transportt); | |
1157 | return &i->expander_attr_cont.ac == cont && | |
1158 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1159 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1160 | } |
1161 | ||
2f8600df | 1162 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1163 | { |
1164 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1165 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce CH |
1166 | |
1167 | put_device(dev->parent); | |
2f8600df | 1168 | kfree(edev); |
c7ebbbce CH |
1169 | } |
1170 | ||
2f8600df | 1171 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1172 | { |
2f8600df JB |
1173 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1174 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1175 | |
2f8600df JB |
1176 | put_device(dev->parent); |
1177 | kfree(edev); | |
c7ebbbce | 1178 | } |
c7ebbbce | 1179 | |
c5943d36 JB |
1180 | /** |
1181 | * sas_rphy_initialize - common rphy intialization | |
1182 | * @rphy: rphy to initialise | |
1183 | * | |
1184 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1185 | * initialise the common rphy component of each. | |
1186 | */ | |
1187 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1188 | { | |
1189 | INIT_LIST_HEAD(&rphy->list); | |
1190 | } | |
1191 | ||
42ab0360 JB |
1192 | /** |
1193 | * sas_end_device_alloc - allocate an rphy for an end device | |
1194 | * | |
1195 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1196 | * | |
1197 | * Returns: | |
1198 | * SAS PHY allocated or %NULL if the allocation failed. | |
1199 | */ | |
65c92b09 | 1200 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1201 | { |
1202 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1203 | struct sas_end_device *rdev; | |
1204 | ||
1205 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1206 | if (!rdev) { | |
42ab0360 JB |
1207 | return NULL; |
1208 | } | |
1209 | ||
1210 | device_initialize(&rdev->rphy.dev); | |
1211 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1212 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1213 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1214 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
1215 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d", | |
1216 | shost->host_no, rphy->scsi_target_id, parent->port_identifier); | |
1217 | } else | |
1218 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d", | |
1219 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1220 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1221 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1222 | transport_setup_device(&rdev->rphy.dev); |
1223 | ||
1224 | return &rdev->rphy; | |
1225 | } | |
1226 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1227 | ||
79cb1819 JB |
1228 | /** |
1229 | * sas_expander_alloc - allocate an rphy for an end device | |
1230 | * | |
1231 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1232 | * | |
1233 | * Returns: | |
1234 | * SAS PHY allocated or %NULL if the allocation failed. | |
1235 | */ | |
65c92b09 | 1236 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1237 | enum sas_device_type type) |
1238 | { | |
1239 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1240 | struct sas_expander_device *rdev; | |
1241 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1242 | ||
1243 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1244 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1245 | ||
1246 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1247 | if (!rdev) { | |
79cb1819 JB |
1248 | return NULL; |
1249 | } | |
1250 | ||
1251 | device_initialize(&rdev->rphy.dev); | |
1252 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1253 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1254 | mutex_lock(&sas_host->lock); |
1255 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1256 | mutex_unlock(&sas_host->lock); | |
1257 | sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d", | |
1258 | shost->host_no, rdev->rphy.scsi_target_id); | |
1259 | rdev->rphy.identify.device_type = type; | |
c5943d36 | 1260 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1261 | transport_setup_device(&rdev->rphy.dev); |
1262 | ||
1263 | return &rdev->rphy; | |
1264 | } | |
1265 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1266 | |
c7ebbbce | 1267 | /** |
1b3c3714 | 1268 | * sas_rphy_add -- add a SAS remote PHY to the device hierarchy |
c7ebbbce CH |
1269 | * @rphy: The remote PHY to be added |
1270 | * | |
1271 | * Publishes a SAS remote PHY to the rest of the system. | |
1272 | */ | |
1273 | int sas_rphy_add(struct sas_rphy *rphy) | |
1274 | { | |
65c92b09 | 1275 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1276 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1277 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1278 | struct sas_identify *identify = &rphy->identify; | |
1279 | int error; | |
1280 | ||
1281 | if (parent->rphy) | |
1282 | return -ENXIO; | |
1283 | parent->rphy = rphy; | |
1284 | ||
1285 | error = device_add(&rphy->dev); | |
1286 | if (error) | |
1287 | return error; | |
1288 | transport_add_device(&rphy->dev); | |
1289 | transport_configure_device(&rphy->dev); | |
1290 | ||
e02f3f59 | 1291 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1292 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1293 | if (identify->device_type == SAS_END_DEVICE && | |
1294 | (identify->target_port_protocols & | |
1295 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1296 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1297 | else if (identify->device_type == SAS_END_DEVICE) |
1298 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1299 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1300 | |
79cb1819 JB |
1301 | if (identify->device_type == SAS_END_DEVICE && |
1302 | rphy->scsi_target_id != -1) { | |
e8bf3941 | 1303 | scsi_scan_target(&rphy->dev, 0, |
c8490f3a | 1304 | rphy->scsi_target_id, SCAN_WILD_CARD, 0); |
c7ebbbce CH |
1305 | } |
1306 | ||
1307 | return 0; | |
1308 | } | |
1309 | EXPORT_SYMBOL(sas_rphy_add); | |
1310 | ||
1311 | /** | |
1312 | * sas_rphy_free -- free a SAS remote PHY | |
1313 | * @rphy SAS remote PHY to free | |
1314 | * | |
1315 | * Frees the specified SAS remote PHY. | |
1316 | * | |
1317 | * Note: | |
1318 | * This function must only be called on a remote | |
1319 | * PHY that has not sucessfully been added using | |
6f63caae | 1320 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
c7ebbbce CH |
1321 | */ |
1322 | void sas_rphy_free(struct sas_rphy *rphy) | |
1323 | { | |
92aab646 | 1324 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1325 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1326 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1327 | ||
e02f3f59 | 1328 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1329 | list_del(&rphy->list); |
e02f3f59 | 1330 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1331 | |
92aab646 | 1332 | transport_destroy_device(dev); |
2f8600df | 1333 | |
92aab646 | 1334 | put_device(dev); |
c7ebbbce CH |
1335 | } |
1336 | EXPORT_SYMBOL(sas_rphy_free); | |
1337 | ||
1338 | /** | |
6f63caae DW |
1339 | * sas_rphy_delete -- remove and free SAS remote PHY |
1340 | * @rphy: SAS remote PHY to remove and free | |
c7ebbbce | 1341 | * |
6f63caae | 1342 | * Removes the specified SAS remote PHY and frees it. |
c7ebbbce CH |
1343 | */ |
1344 | void | |
1345 | sas_rphy_delete(struct sas_rphy *rphy) | |
6f63caae DW |
1346 | { |
1347 | sas_rphy_remove(rphy); | |
1348 | sas_rphy_free(rphy); | |
1349 | } | |
1350 | EXPORT_SYMBOL(sas_rphy_delete); | |
1351 | ||
1352 | /** | |
1353 | * sas_rphy_remove -- remove SAS remote PHY | |
1354 | * @rphy: SAS remote phy to remove | |
1355 | * | |
1356 | * Removes the specified SAS remote PHY. | |
1357 | */ | |
1358 | void | |
1359 | sas_rphy_remove(struct sas_rphy *rphy) | |
c7ebbbce CH |
1360 | { |
1361 | struct device *dev = &rphy->dev; | |
65c92b09 | 1362 | struct sas_port *parent = dev_to_sas_port(dev->parent); |
c7ebbbce | 1363 | |
d4054239 CH |
1364 | switch (rphy->identify.device_type) { |
1365 | case SAS_END_DEVICE: | |
1366 | scsi_remove_target(dev); | |
1367 | break; | |
1368 | case SAS_EDGE_EXPANDER_DEVICE: | |
1369 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1370 | sas_remove_children(dev); |
d4054239 CH |
1371 | break; |
1372 | default: | |
1373 | break; | |
1374 | } | |
c7ebbbce | 1375 | |
fe8b2304 CH |
1376 | transport_remove_device(dev); |
1377 | device_del(dev); | |
c7ebbbce | 1378 | |
33b114e9 | 1379 | parent->rphy = NULL; |
c7ebbbce | 1380 | } |
6f63caae | 1381 | EXPORT_SYMBOL(sas_rphy_remove); |
c7ebbbce CH |
1382 | |
1383 | /** | |
1384 | * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY | |
1385 | * @dev: device to check | |
1386 | * | |
1387 | * Returns: | |
1388 | * %1 if the device represents a SAS remote PHY, %0 else | |
1389 | */ | |
1390 | int scsi_is_sas_rphy(const struct device *dev) | |
1391 | { | |
2f8600df JB |
1392 | return dev->release == sas_end_device_release || |
1393 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1394 | } |
1395 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1396 | ||
1397 | ||
1398 | /* | |
1399 | * SCSI scan helper | |
1400 | */ | |
1401 | ||
e02f3f59 CH |
1402 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
1403 | uint id, uint lun) | |
c7ebbbce CH |
1404 | { |
1405 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1406 | struct sas_rphy *rphy; | |
c7ebbbce | 1407 | |
e02f3f59 | 1408 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1409 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1410 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1411 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1412 | continue; |
1413 | ||
e8bf3941 | 1414 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1415 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
e8bf3941 | 1416 | scsi_scan_target(&rphy->dev, 0, |
e02f3f59 CH |
1417 | rphy->scsi_target_id, lun, 1); |
1418 | } | |
c7ebbbce | 1419 | } |
e02f3f59 | 1420 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1421 | |
e02f3f59 | 1422 | return 0; |
c7ebbbce CH |
1423 | } |
1424 | ||
1425 | ||
1426 | /* | |
1427 | * Setup / Teardown code | |
1428 | */ | |
1429 | ||
d24e1eeb | 1430 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
42ab0360 JB |
1431 | i->private_##attrb[count] = class_device_attr_##field; \ |
1432 | i->private_##attrb[count].attr.mode = perm; \ | |
42ab0360 JB |
1433 | i->attrb[count] = &i->private_##attrb[count]; \ |
1434 | if (test) \ | |
1435 | count++ | |
1436 | ||
d24e1eeb JB |
1437 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
1438 | i->private_##attrb[count] = class_device_attr_##field; \ | |
1439 | i->private_##attrb[count].attr.mode = perm; \ | |
1440 | if (ro_test) { \ | |
1441 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1442 | i->private_##attrb[count].store = NULL; \ | |
1443 | } \ | |
1444 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1445 | if (test) \ | |
1446 | count++ | |
42ab0360 JB |
1447 | |
1448 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1449 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1450 | |
dd9fbb52 | 1451 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1452 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1453 | |
65c92b09 | 1454 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1455 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1456 | |
d24e1eeb JB |
1457 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1458 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1459 | !i->f->set_phy_speed, S_IRUGO) | |
1460 | ||
acbf167d DW |
1461 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
1462 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1463 | !i->f->func, S_IRUGO) | |
1464 | ||
65c92b09 JB |
1465 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1466 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1467 | ||
1468 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1469 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1470 | |
65c92b09 | 1471 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
fe3b5bfe | 1472 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
07ba3a95 | 1473 | |
65c92b09 | 1474 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
fe3b5bfe | 1475 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
dd9fbb52 | 1476 | |
42ab0360 JB |
1477 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1478 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1479 | |
79cb1819 JB |
1480 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1481 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1482 | ||
c7ebbbce CH |
1483 | /** |
1484 | * sas_attach_transport -- instantiate SAS transport template | |
1485 | * @ft: SAS transport class function template | |
1486 | */ | |
1487 | struct scsi_transport_template * | |
1488 | sas_attach_transport(struct sas_function_template *ft) | |
1489 | { | |
1490 | struct sas_internal *i; | |
1491 | int count; | |
1492 | ||
24669f75 | 1493 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1494 | if (!i) |
1495 | return NULL; | |
c7ebbbce | 1496 | |
e02f3f59 | 1497 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1498 | |
1499 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1500 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1501 | i->t.host_attrs.ac.match = sas_host_match; | |
1502 | transport_container_register(&i->t.host_attrs); | |
1503 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1504 | ||
1505 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1506 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1507 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1508 | transport_container_register(&i->phy_attr_cont); | |
1509 | ||
65c92b09 JB |
1510 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1511 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1512 | i->port_attr_cont.ac.match = sas_port_match; | |
1513 | transport_container_register(&i->port_attr_cont); | |
1514 | ||
c7ebbbce CH |
1515 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1516 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1517 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1518 | transport_container_register(&i->rphy_attr_cont); | |
1519 | ||
42ab0360 JB |
1520 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1521 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1522 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1523 | transport_container_register(&i->end_dev_attr_cont); | |
1524 | ||
79cb1819 JB |
1525 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1526 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1527 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1528 | transport_container_register(&i->expander_attr_cont); | |
1529 | ||
c7ebbbce CH |
1530 | i->f = ft; |
1531 | ||
1532 | count = 0; | |
65c92b09 | 1533 | SETUP_PORT_ATTRIBUTE(num_phys); |
c7ebbbce CH |
1534 | i->host_attrs[count] = NULL; |
1535 | ||
1536 | count = 0; | |
65c92b09 JB |
1537 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1538 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1539 | SETUP_PHY_ATTRIBUTE(device_type); | |
1540 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1541 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1542 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1543 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1544 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1545 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1546 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1547 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1548 | |
1549 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1550 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1551 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1552 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1553 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1554 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1555 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1556 | i->phy_attrs[count] = NULL; |
1557 | ||
65c92b09 JB |
1558 | count = 0; |
1559 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1560 | i->port_attrs[count] = NULL; | |
1561 | ||
c7ebbbce CH |
1562 | count = 0; |
1563 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1564 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1565 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1566 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1567 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
dd9fbb52 JB |
1568 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1569 | get_enclosure_identifier); | |
1570 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1571 | get_bay_identifier); | |
c7ebbbce CH |
1572 | i->rphy_attrs[count] = NULL; |
1573 | ||
42ab0360 JB |
1574 | count = 0; |
1575 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1576 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1577 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
1578 | i->end_dev_attrs[count] = NULL; | |
1579 | ||
79cb1819 JB |
1580 | count = 0; |
1581 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1582 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1583 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1584 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1585 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1586 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1587 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1588 | i->expander_attrs[count] = NULL; | |
1589 | ||
c7ebbbce CH |
1590 | return &i->t; |
1591 | } | |
1592 | EXPORT_SYMBOL(sas_attach_transport); | |
1593 | ||
1594 | /** | |
1595 | * sas_release_transport -- release SAS transport template instance | |
1596 | * @t: transport template instance | |
1597 | */ | |
1598 | void sas_release_transport(struct scsi_transport_template *t) | |
1599 | { | |
1600 | struct sas_internal *i = to_sas_internal(t); | |
1601 | ||
1602 | transport_container_unregister(&i->t.host_attrs); | |
1603 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1604 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1605 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1606 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1607 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1608 | |
1609 | kfree(i); | |
1610 | } | |
1611 | EXPORT_SYMBOL(sas_release_transport); | |
1612 | ||
1613 | static __init int sas_transport_init(void) | |
1614 | { | |
1615 | int error; | |
1616 | ||
1617 | error = transport_class_register(&sas_host_class); | |
1618 | if (error) | |
1619 | goto out; | |
1620 | error = transport_class_register(&sas_phy_class); | |
1621 | if (error) | |
1622 | goto out_unregister_transport; | |
65c92b09 | 1623 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1624 | if (error) |
1625 | goto out_unregister_phy; | |
65c92b09 JB |
1626 | error = transport_class_register(&sas_rphy_class); |
1627 | if (error) | |
1628 | goto out_unregister_port; | |
42ab0360 JB |
1629 | error = transport_class_register(&sas_end_dev_class); |
1630 | if (error) | |
1631 | goto out_unregister_rphy; | |
79cb1819 JB |
1632 | error = transport_class_register(&sas_expander_class); |
1633 | if (error) | |
1634 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1635 | |
1636 | return 0; | |
1637 | ||
79cb1819 JB |
1638 | out_unregister_end_dev: |
1639 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1640 | out_unregister_rphy: |
1641 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1642 | out_unregister_port: |
1643 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1644 | out_unregister_phy: |
1645 | transport_class_unregister(&sas_phy_class); | |
1646 | out_unregister_transport: | |
1647 | transport_class_unregister(&sas_host_class); | |
1648 | out: | |
1649 | return error; | |
1650 | ||
1651 | } | |
1652 | ||
1653 | static void __exit sas_transport_exit(void) | |
1654 | { | |
1655 | transport_class_unregister(&sas_host_class); | |
1656 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1657 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1658 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1659 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1660 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1661 | } |
1662 | ||
1663 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1664 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
1665 | MODULE_LICENSE("GPL"); |
1666 | ||
1667 | module_init(sas_transport_init); | |
1668 | module_exit(sas_transport_exit); |