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> | |
7aa68e80 FT |
32 | #include <linux/blkdev.h> |
33 | #include <linux/bsg.h> | |
c7ebbbce | 34 | |
e02f3f59 | 35 | #include <scsi/scsi.h> |
c7ebbbce CH |
36 | #include <scsi/scsi_device.h> |
37 | #include <scsi/scsi_host.h> | |
38 | #include <scsi/scsi_transport.h> | |
39 | #include <scsi/scsi_transport_sas.h> | |
40 | ||
d6159c17 | 41 | #include "scsi_sas_internal.h" |
c7ebbbce CH |
42 | struct sas_host_attrs { |
43 | struct list_head rphy_list; | |
e02f3f59 | 44 | struct mutex lock; |
c7ebbbce | 45 | u32 next_target_id; |
79cb1819 | 46 | u32 next_expander_id; |
c9fefeb2 | 47 | int next_port_id; |
c7ebbbce CH |
48 | }; |
49 | #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) | |
50 | ||
51 | ||
52 | /* | |
53 | * Hack to allow attributes of the same name in different objects. | |
54 | */ | |
55 | #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ | |
56 | struct class_device_attribute class_device_attr_##_prefix##_##_name = \ | |
57 | __ATTR(_name,_mode,_show,_store) | |
58 | ||
59 | ||
60 | /* | |
61 | * Pretty printing helpers | |
62 | */ | |
63 | ||
64 | #define sas_bitfield_name_match(title, table) \ | |
65 | static ssize_t \ | |
66 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
67 | { \ | |
68 | char *prefix = ""; \ | |
69 | ssize_t len = 0; \ | |
70 | int i; \ | |
71 | \ | |
6391a113 | 72 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
73 | if (table[i].value & table_key) { \ |
74 | len += sprintf(buf + len, "%s%s", \ | |
75 | prefix, table[i].name); \ | |
76 | prefix = ", "; \ | |
77 | } \ | |
78 | } \ | |
79 | len += sprintf(buf + len, "\n"); \ | |
80 | return len; \ | |
81 | } | |
82 | ||
d24e1eeb JB |
83 | #define sas_bitfield_name_set(title, table) \ |
84 | static ssize_t \ | |
85 | set_sas_##title##_names(u32 *table_key, const char *buf) \ | |
86 | { \ | |
87 | ssize_t len = 0; \ | |
88 | int i; \ | |
89 | \ | |
90 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ | |
91 | len = strlen(table[i].name); \ | |
92 | if (strncmp(buf, table[i].name, len) == 0 && \ | |
93 | (buf[len] == '\n' || buf[len] == '\0')) { \ | |
94 | *table_key = table[i].value; \ | |
95 | return 0; \ | |
96 | } \ | |
97 | } \ | |
98 | return -EINVAL; \ | |
99 | } | |
100 | ||
c7ebbbce CH |
101 | #define sas_bitfield_name_search(title, table) \ |
102 | static ssize_t \ | |
103 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
104 | { \ | |
105 | ssize_t len = 0; \ | |
106 | int i; \ | |
107 | \ | |
6391a113 | 108 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
109 | if (table[i].value == table_key) { \ |
110 | len += sprintf(buf + len, "%s", \ | |
111 | table[i].name); \ | |
112 | break; \ | |
113 | } \ | |
114 | } \ | |
115 | len += sprintf(buf + len, "\n"); \ | |
116 | return len; \ | |
117 | } | |
118 | ||
119 | static struct { | |
120 | u32 value; | |
121 | char *name; | |
122 | } sas_device_type_names[] = { | |
123 | { SAS_PHY_UNUSED, "unused" }, | |
124 | { SAS_END_DEVICE, "end device" }, | |
125 | { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, | |
126 | { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, | |
127 | }; | |
128 | sas_bitfield_name_search(device_type, sas_device_type_names) | |
129 | ||
130 | ||
131 | static struct { | |
132 | u32 value; | |
133 | char *name; | |
134 | } sas_protocol_names[] = { | |
135 | { SAS_PROTOCOL_SATA, "sata" }, | |
136 | { SAS_PROTOCOL_SMP, "smp" }, | |
137 | { SAS_PROTOCOL_STP, "stp" }, | |
138 | { SAS_PROTOCOL_SSP, "ssp" }, | |
139 | }; | |
140 | sas_bitfield_name_match(protocol, sas_protocol_names) | |
141 | ||
142 | static struct { | |
143 | u32 value; | |
144 | char *name; | |
145 | } sas_linkspeed_names[] = { | |
146 | { SAS_LINK_RATE_UNKNOWN, "Unknown" }, | |
147 | { SAS_PHY_DISABLED, "Phy disabled" }, | |
148 | { SAS_LINK_RATE_FAILED, "Link Rate failed" }, | |
149 | { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, | |
150 | { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, | |
151 | { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, | |
7e6dff62 | 152 | { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, |
c7ebbbce CH |
153 | }; |
154 | sas_bitfield_name_search(linkspeed, sas_linkspeed_names) | |
d24e1eeb | 155 | sas_bitfield_name_set(linkspeed, sas_linkspeed_names) |
c7ebbbce | 156 | |
7aa68e80 FT |
157 | static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost, |
158 | struct sas_rphy *rphy) | |
159 | { | |
160 | struct request *req; | |
161 | int ret; | |
162 | int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); | |
163 | ||
164 | while (!blk_queue_plugged(q)) { | |
165 | req = elv_next_request(q); | |
166 | if (!req) | |
167 | break; | |
168 | ||
169 | blkdev_dequeue_request(req); | |
170 | ||
171 | spin_unlock_irq(q->queue_lock); | |
172 | ||
173 | handler = to_sas_internal(shost->transportt)->f->smp_handler; | |
174 | ret = handler(shost, rphy, req); | |
175 | ||
176 | spin_lock_irq(q->queue_lock); | |
177 | ||
178 | req->end_io(req, ret); | |
179 | } | |
180 | } | |
181 | ||
182 | static void sas_host_smp_request(struct request_queue *q) | |
183 | { | |
184 | sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); | |
185 | } | |
186 | ||
187 | static void sas_non_host_smp_request(struct request_queue *q) | |
188 | { | |
189 | struct sas_rphy *rphy = q->queuedata; | |
190 | sas_smp_request(q, rphy_to_shost(rphy), rphy); | |
191 | } | |
192 | ||
193 | static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy, | |
194 | char *name) | |
195 | { | |
196 | struct request_queue *q; | |
197 | int error; | |
198 | ||
199 | if (!to_sas_internal(shost->transportt)->f->smp_handler) { | |
200 | printk("%s can't handle SMP requests\n", shost->hostt->name); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | if (rphy) | |
205 | q = blk_init_queue(sas_non_host_smp_request, NULL); | |
206 | else | |
207 | q = blk_init_queue(sas_host_smp_request, NULL); | |
208 | if (!q) | |
209 | return -ENOMEM; | |
210 | ||
211 | error = bsg_register_queue(q, name); | |
212 | if (error) { | |
213 | blk_cleanup_queue(q); | |
214 | return -ENOMEM; | |
215 | } | |
216 | ||
217 | if (rphy) | |
218 | q->queuedata = rphy; | |
219 | else | |
220 | q->queuedata = shost; | |
221 | ||
222 | set_bit(QUEUE_FLAG_BIDI, &q->queue_flags); | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
c7ebbbce CH |
227 | /* |
228 | * SAS host attributes | |
229 | */ | |
230 | ||
37be6eeb JB |
231 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
232 | struct class_device *cdev) | |
c7ebbbce CH |
233 | { |
234 | struct Scsi_Host *shost = dev_to_shost(dev); | |
235 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
7aa68e80 | 236 | char name[BUS_ID_SIZE]; |
c7ebbbce CH |
237 | |
238 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 239 | mutex_init(&sas_host->lock); |
c7ebbbce | 240 | sas_host->next_target_id = 0; |
79cb1819 | 241 | sas_host->next_expander_id = 0; |
c9fefeb2 | 242 | sas_host->next_port_id = 0; |
7aa68e80 FT |
243 | |
244 | snprintf(name, sizeof(name), "sas_host%d", shost->host_no); | |
245 | if (sas_bsg_initialize(shost, NULL, name)) | |
246 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", | |
247 | shost->host_no); | |
248 | ||
c7ebbbce CH |
249 | return 0; |
250 | } | |
251 | ||
252 | static DECLARE_TRANSPORT_CLASS(sas_host_class, | |
253 | "sas_host", sas_host_setup, NULL, NULL); | |
254 | ||
255 | static int sas_host_match(struct attribute_container *cont, | |
256 | struct device *dev) | |
257 | { | |
258 | struct Scsi_Host *shost; | |
259 | struct sas_internal *i; | |
260 | ||
261 | if (!scsi_is_host_device(dev)) | |
262 | return 0; | |
263 | shost = dev_to_shost(dev); | |
264 | ||
265 | if (!shost->transportt) | |
266 | return 0; | |
267 | if (shost->transportt->host_attrs.ac.class != | |
268 | &sas_host_class.class) | |
269 | return 0; | |
270 | ||
271 | i = to_sas_internal(shost->transportt); | |
272 | return &i->t.host_attrs.ac == cont; | |
273 | } | |
274 | ||
275 | static int do_sas_phy_delete(struct device *dev, void *data) | |
276 | { | |
65c92b09 JB |
277 | int pass = (int)(unsigned long)data; |
278 | ||
279 | if (pass == 0 && scsi_is_sas_port(dev)) | |
280 | sas_port_delete(dev_to_sas_port(dev)); | |
281 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
282 | sas_phy_delete(dev_to_phy(dev)); |
283 | return 0; | |
284 | } | |
285 | ||
65c92b09 JB |
286 | /** |
287 | * sas_remove_children -- tear down a devices SAS data structures | |
288 | * @dev: device belonging to the sas object | |
289 | * | |
290 | * Removes all SAS PHYs and remote PHYs for a given object | |
291 | */ | |
292 | void sas_remove_children(struct device *dev) | |
293 | { | |
294 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
295 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
296 | } | |
297 | EXPORT_SYMBOL(sas_remove_children); | |
298 | ||
c7ebbbce CH |
299 | /** |
300 | * sas_remove_host -- tear down a Scsi_Host's SAS data structures | |
301 | * @shost: Scsi Host that is torn down | |
302 | * | |
303 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. | |
304 | * Must be called just before scsi_remove_host for SAS HBAs. | |
305 | */ | |
306 | void sas_remove_host(struct Scsi_Host *shost) | |
307 | { | |
65c92b09 | 308 | sas_remove_children(&shost->shost_gendev); |
c7ebbbce CH |
309 | } |
310 | EXPORT_SYMBOL(sas_remove_host); | |
311 | ||
312 | ||
313 | /* | |
65c92b09 | 314 | * SAS Phy attributes |
c7ebbbce CH |
315 | */ |
316 | ||
317 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
318 | static ssize_t \ | |
319 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
320 | { \ | |
321 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
322 | \ | |
323 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
324 | } | |
325 | ||
326 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
327 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
328 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
329 | ||
330 | #define sas_phy_show_protocol(field, name) \ | |
331 | static ssize_t \ | |
332 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
333 | { \ | |
334 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
335 | \ | |
336 | if (!phy->field) \ | |
337 | return snprintf(buf, 20, "none\n"); \ | |
338 | return get_sas_protocol_names(phy->field, buf); \ | |
339 | } | |
340 | ||
341 | #define sas_phy_protocol_attr(field, name) \ | |
342 | sas_phy_show_protocol(field, name) \ | |
343 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
344 | ||
345 | #define sas_phy_show_linkspeed(field) \ | |
346 | static ssize_t \ | |
347 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
348 | { \ | |
349 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
350 | \ | |
351 | return get_sas_linkspeed_names(phy->field, buf); \ | |
352 | } | |
353 | ||
d24e1eeb JB |
354 | /* Fudge to tell if we're minimum or maximum */ |
355 | #define sas_phy_store_linkspeed(field) \ | |
356 | static ssize_t \ | |
357 | store_sas_phy_##field(struct class_device *cdev, const char *buf, \ | |
358 | size_t count) \ | |
359 | { \ | |
360 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
361 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ | |
362 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
363 | u32 value; \ | |
364 | struct sas_phy_linkrates rates = {0}; \ | |
365 | int error; \ | |
366 | \ | |
367 | error = set_sas_linkspeed_names(&value, buf); \ | |
368 | if (error) \ | |
369 | return error; \ | |
370 | rates.field = value; \ | |
371 | error = i->f->set_phy_speed(phy, &rates); \ | |
372 | \ | |
373 | return error ? error : count; \ | |
374 | } | |
375 | ||
376 | #define sas_phy_linkspeed_rw_attr(field) \ | |
377 | sas_phy_show_linkspeed(field) \ | |
378 | sas_phy_store_linkspeed(field) \ | |
379 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ | |
380 | store_sas_phy_##field) | |
381 | ||
c7ebbbce CH |
382 | #define sas_phy_linkspeed_attr(field) \ |
383 | sas_phy_show_linkspeed(field) \ | |
384 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
385 | ||
d24e1eeb | 386 | |
c3ee74c4 CH |
387 | #define sas_phy_show_linkerror(field) \ |
388 | static ssize_t \ | |
389 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
390 | { \ | |
391 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
392 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ | |
393 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
394 | int error; \ | |
395 | \ | |
dd9fbb52 | 396 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
397 | if (error) \ |
398 | return error; \ | |
399 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
400 | } | |
401 | ||
402 | #define sas_phy_linkerror_attr(field) \ | |
403 | sas_phy_show_linkerror(field) \ | |
404 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
405 | ||
406 | ||
c7ebbbce CH |
407 | static ssize_t |
408 | show_sas_device_type(struct class_device *cdev, char *buf) | |
409 | { | |
410 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
411 | ||
412 | if (!phy->identify.device_type) | |
413 | return snprintf(buf, 20, "none\n"); | |
414 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
415 | } | |
c7ebbbce CH |
416 | static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
417 | ||
acbf167d DW |
418 | static ssize_t do_sas_phy_enable(struct class_device *cdev, |
419 | size_t count, int enable) | |
420 | { | |
421 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
422 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
423 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
424 | int error; | |
425 | ||
426 | error = i->f->phy_enable(phy, enable); | |
427 | if (error) | |
428 | return error; | |
429 | phy->enabled = enable; | |
430 | return count; | |
431 | }; | |
432 | ||
433 | static ssize_t store_sas_phy_enable(struct class_device *cdev, | |
434 | const char *buf, size_t count) | |
435 | { | |
436 | if (count < 1) | |
437 | return -EINVAL; | |
438 | ||
439 | switch (buf[0]) { | |
440 | case '0': | |
441 | do_sas_phy_enable(cdev, count, 0); | |
442 | break; | |
443 | case '1': | |
444 | do_sas_phy_enable(cdev, count, 1); | |
445 | break; | |
446 | default: | |
447 | return -EINVAL; | |
448 | } | |
449 | ||
450 | return count; | |
451 | } | |
452 | ||
453 | static ssize_t show_sas_phy_enable(struct class_device *cdev, char *buf) | |
454 | { | |
455 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
456 | ||
457 | return snprintf(buf, 20, "%d", phy->enabled); | |
458 | } | |
459 | ||
460 | static CLASS_DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, | |
461 | store_sas_phy_enable); | |
462 | ||
07ba3a95 CH |
463 | static ssize_t do_sas_phy_reset(struct class_device *cdev, |
464 | size_t count, int hard_reset) | |
465 | { | |
466 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
467 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
468 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
469 | int error; | |
470 | ||
07ba3a95 CH |
471 | error = i->f->phy_reset(phy, hard_reset); |
472 | if (error) | |
473 | return error; | |
474 | return count; | |
475 | }; | |
476 | ||
477 | static ssize_t store_sas_link_reset(struct class_device *cdev, | |
478 | const char *buf, size_t count) | |
479 | { | |
480 | return do_sas_phy_reset(cdev, count, 0); | |
481 | } | |
482 | static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); | |
483 | ||
484 | static ssize_t store_sas_hard_reset(struct class_device *cdev, | |
485 | const char *buf, size_t count) | |
486 | { | |
487 | return do_sas_phy_reset(cdev, count, 1); | |
488 | } | |
489 | static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); | |
490 | ||
c7ebbbce CH |
491 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
492 | initiator_port_protocols); | |
493 | sas_phy_protocol_attr(identify.target_port_protocols, | |
494 | target_port_protocols); | |
495 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
496 | unsigned long long); | |
497 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 498 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
499 | sas_phy_linkspeed_attr(negotiated_linkrate); |
500 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 501 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 502 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 503 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
504 | sas_phy_linkerror_attr(invalid_dword_count); |
505 | sas_phy_linkerror_attr(running_disparity_error_count); | |
506 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
507 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce CH |
508 | |
509 | ||
510 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
511 | "sas_phy", NULL, NULL, NULL); | |
512 | ||
513 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
514 | { | |
515 | struct Scsi_Host *shost; | |
516 | struct sas_internal *i; | |
517 | ||
518 | if (!scsi_is_sas_phy(dev)) | |
519 | return 0; | |
520 | shost = dev_to_shost(dev->parent); | |
521 | ||
522 | if (!shost->transportt) | |
523 | return 0; | |
524 | if (shost->transportt->host_attrs.ac.class != | |
525 | &sas_host_class.class) | |
526 | return 0; | |
527 | ||
528 | i = to_sas_internal(shost->transportt); | |
529 | return &i->phy_attr_cont.ac == cont; | |
530 | } | |
531 | ||
532 | static void sas_phy_release(struct device *dev) | |
533 | { | |
534 | struct sas_phy *phy = dev_to_phy(dev); | |
535 | ||
536 | put_device(dev->parent); | |
537 | kfree(phy); | |
538 | } | |
539 | ||
540 | /** | |
541 | * sas_phy_alloc -- allocates and initialize a SAS PHY structure | |
542 | * @parent: Parent device | |
d99ca418 | 543 | * @number: Phy index |
c7ebbbce CH |
544 | * |
545 | * Allocates an SAS PHY structure. It will be added in the device tree | |
546 | * below the device specified by @parent, which has to be either a Scsi_Host | |
547 | * or sas_rphy. | |
548 | * | |
549 | * Returns: | |
550 | * SAS PHY allocated or %NULL if the allocation failed. | |
551 | */ | |
552 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
553 | { | |
554 | struct Scsi_Host *shost = dev_to_shost(parent); | |
555 | struct sas_phy *phy; | |
556 | ||
24669f75 | 557 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
558 | if (!phy) |
559 | return NULL; | |
c7ebbbce | 560 | |
c7ebbbce | 561 | phy->number = number; |
acbf167d | 562 | phy->enabled = 1; |
c7ebbbce CH |
563 | |
564 | device_initialize(&phy->dev); | |
565 | phy->dev.parent = get_device(parent); | |
566 | phy->dev.release = sas_phy_release; | |
65c92b09 | 567 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
568 | if (scsi_is_sas_expander_device(parent)) { |
569 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
65c92b09 | 570 | sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
571 | rphy->scsi_target_id, number); |
572 | } else | |
573 | sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); | |
c7ebbbce CH |
574 | |
575 | transport_setup_device(&phy->dev); | |
576 | ||
577 | return phy; | |
578 | } | |
579 | EXPORT_SYMBOL(sas_phy_alloc); | |
580 | ||
581 | /** | |
1b3c3714 | 582 | * sas_phy_add -- add a SAS PHY to the device hierarchy |
c7ebbbce CH |
583 | * @phy: The PHY to be added |
584 | * | |
585 | * Publishes a SAS PHY to the rest of the system. | |
586 | */ | |
587 | int sas_phy_add(struct sas_phy *phy) | |
588 | { | |
589 | int error; | |
590 | ||
591 | error = device_add(&phy->dev); | |
592 | if (!error) { | |
593 | transport_add_device(&phy->dev); | |
594 | transport_configure_device(&phy->dev); | |
595 | } | |
596 | ||
597 | return error; | |
598 | } | |
599 | EXPORT_SYMBOL(sas_phy_add); | |
600 | ||
601 | /** | |
602 | * sas_phy_free -- free a SAS PHY | |
603 | * @phy: SAS PHY to free | |
604 | * | |
605 | * Frees the specified SAS PHY. | |
606 | * | |
607 | * Note: | |
608 | * This function must only be called on a PHY that has not | |
609 | * sucessfully been added using sas_phy_add(). | |
610 | */ | |
611 | void sas_phy_free(struct sas_phy *phy) | |
612 | { | |
613 | transport_destroy_device(&phy->dev); | |
92aab646 | 614 | put_device(&phy->dev); |
c7ebbbce CH |
615 | } |
616 | EXPORT_SYMBOL(sas_phy_free); | |
617 | ||
618 | /** | |
619 | * sas_phy_delete -- remove SAS PHY | |
620 | * @phy: SAS PHY to remove | |
621 | * | |
622 | * Removes the specified SAS PHY. If the SAS PHY has an | |
623 | * associated remote PHY it is removed before. | |
624 | */ | |
625 | void | |
626 | sas_phy_delete(struct sas_phy *phy) | |
627 | { | |
628 | struct device *dev = &phy->dev; | |
629 | ||
65c92b09 JB |
630 | /* this happens if the phy is still part of a port when deleted */ |
631 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
632 | |
633 | transport_remove_device(dev); | |
634 | device_del(dev); | |
635 | transport_destroy_device(dev); | |
92aab646 | 636 | put_device(dev); |
c7ebbbce CH |
637 | } |
638 | EXPORT_SYMBOL(sas_phy_delete); | |
639 | ||
640 | /** | |
641 | * scsi_is_sas_phy -- check if a struct device represents a SAS PHY | |
642 | * @dev: device to check | |
643 | * | |
644 | * Returns: | |
645 | * %1 if the device represents a SAS PHY, %0 else | |
646 | */ | |
647 | int scsi_is_sas_phy(const struct device *dev) | |
648 | { | |
649 | return dev->release == sas_phy_release; | |
650 | } | |
651 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
652 | ||
65c92b09 JB |
653 | /* |
654 | * SAS Port attributes | |
655 | */ | |
656 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
657 | static ssize_t \ | |
658 | show_sas_port_##name(struct class_device *cdev, char *buf) \ | |
659 | { \ | |
660 | struct sas_port *port = transport_class_to_sas_port(cdev); \ | |
661 | \ | |
662 | return snprintf(buf, 20, format_string, cast port->field); \ | |
663 | } | |
664 | ||
665 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
666 | sas_port_show_simple(field, name, format_string, (type)) \ | |
667 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) | |
668 | ||
669 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
670 | ||
671 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
672 | "sas_port", NULL, NULL, NULL); | |
673 | ||
674 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
675 | { | |
676 | struct Scsi_Host *shost; | |
677 | struct sas_internal *i; | |
678 | ||
679 | if (!scsi_is_sas_port(dev)) | |
680 | return 0; | |
681 | shost = dev_to_shost(dev->parent); | |
682 | ||
683 | if (!shost->transportt) | |
684 | return 0; | |
685 | if (shost->transportt->host_attrs.ac.class != | |
686 | &sas_host_class.class) | |
687 | return 0; | |
688 | ||
689 | i = to_sas_internal(shost->transportt); | |
690 | return &i->port_attr_cont.ac == cont; | |
691 | } | |
692 | ||
693 | ||
694 | static void sas_port_release(struct device *dev) | |
695 | { | |
696 | struct sas_port *port = dev_to_sas_port(dev); | |
697 | ||
698 | BUG_ON(!list_empty(&port->phy_list)); | |
699 | ||
700 | put_device(dev->parent); | |
701 | kfree(port); | |
702 | } | |
703 | ||
704 | static void sas_port_create_link(struct sas_port *port, | |
705 | struct sas_phy *phy) | |
706 | { | |
21434966 DW |
707 | int res; |
708 | ||
709 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
710 | phy->dev.bus_id); | |
711 | if (res) | |
712 | goto err; | |
713 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
714 | if (res) | |
715 | goto err; | |
716 | return; | |
717 | err: | |
718 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
719 | __FUNCTION__, res); | |
65c92b09 JB |
720 | } |
721 | ||
722 | static void sas_port_delete_link(struct sas_port *port, | |
723 | struct sas_phy *phy) | |
724 | { | |
725 | sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id); | |
726 | sysfs_remove_link(&phy->dev.kobj, "port"); | |
727 | } | |
728 | ||
729 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
730 | * | |
731 | * @parent: parent device | |
732 | * @port_id: port number | |
733 | * | |
734 | * Allocates a SAS port structure. It will be added to the device tree | |
735 | * below the device specified by @parent which must be either a Scsi_Host | |
736 | * or a sas_expander_device. | |
737 | * | |
738 | * Returns %NULL on error | |
739 | */ | |
740 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
741 | { | |
742 | struct Scsi_Host *shost = dev_to_shost(parent); | |
743 | struct sas_port *port; | |
744 | ||
745 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
746 | if (!port) | |
747 | return NULL; | |
748 | ||
749 | port->port_identifier = port_id; | |
750 | ||
751 | device_initialize(&port->dev); | |
752 | ||
753 | port->dev.parent = get_device(parent); | |
754 | port->dev.release = sas_port_release; | |
755 | ||
756 | mutex_init(&port->phy_list_mutex); | |
757 | INIT_LIST_HEAD(&port->phy_list); | |
758 | ||
759 | if (scsi_is_sas_expander_device(parent)) { | |
760 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
761 | sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no, | |
762 | rphy->scsi_target_id, port->port_identifier); | |
763 | } else | |
764 | sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no, | |
765 | port->port_identifier); | |
766 | ||
767 | transport_setup_device(&port->dev); | |
768 | ||
769 | return port; | |
770 | } | |
771 | EXPORT_SYMBOL(sas_port_alloc); | |
772 | ||
c9fefeb2 JB |
773 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
774 | * | |
775 | * @parent: parent device | |
776 | * | |
777 | * Allocates a SAS port structure and a number to go with it. This | |
778 | * interface is really for adapters where the port number has no | |
779 | * meansing, so the sas class should manage them. It will be added to | |
780 | * the device tree below the device specified by @parent which must be | |
781 | * either a Scsi_Host or a sas_expander_device. | |
782 | * | |
783 | * Returns %NULL on error | |
784 | */ | |
785 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
786 | { | |
787 | int index; | |
788 | struct Scsi_Host *shost = dev_to_shost(parent); | |
789 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
790 | ||
791 | /* FIXME: use idr for this eventually */ | |
792 | mutex_lock(&sas_host->lock); | |
793 | if (scsi_is_sas_expander_device(parent)) { | |
794 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
795 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
796 | ||
797 | index = exp->next_port_id++; | |
798 | } else | |
799 | index = sas_host->next_port_id++; | |
800 | mutex_unlock(&sas_host->lock); | |
801 | return sas_port_alloc(parent, index); | |
802 | } | |
803 | EXPORT_SYMBOL(sas_port_alloc_num); | |
804 | ||
65c92b09 JB |
805 | /** |
806 | * sas_port_add - add a SAS port to the device hierarchy | |
807 | * | |
808 | * @port: port to be added | |
809 | * | |
810 | * publishes a port to the rest of the system | |
811 | */ | |
812 | int sas_port_add(struct sas_port *port) | |
813 | { | |
814 | int error; | |
815 | ||
816 | /* No phys should be added until this is made visible */ | |
817 | BUG_ON(!list_empty(&port->phy_list)); | |
818 | ||
819 | error = device_add(&port->dev); | |
820 | ||
821 | if (error) | |
822 | return error; | |
823 | ||
824 | transport_add_device(&port->dev); | |
825 | transport_configure_device(&port->dev); | |
826 | ||
827 | return 0; | |
828 | } | |
829 | EXPORT_SYMBOL(sas_port_add); | |
830 | ||
831 | /** | |
832 | * sas_port_free -- free a SAS PORT | |
833 | * @port: SAS PORT to free | |
834 | * | |
835 | * Frees the specified SAS PORT. | |
836 | * | |
837 | * Note: | |
838 | * This function must only be called on a PORT that has not | |
839 | * sucessfully been added using sas_port_add(). | |
840 | */ | |
841 | void sas_port_free(struct sas_port *port) | |
842 | { | |
843 | transport_destroy_device(&port->dev); | |
844 | put_device(&port->dev); | |
845 | } | |
846 | EXPORT_SYMBOL(sas_port_free); | |
847 | ||
848 | /** | |
849 | * sas_port_delete -- remove SAS PORT | |
850 | * @port: SAS PORT to remove | |
851 | * | |
852 | * Removes the specified SAS PORT. If the SAS PORT has an | |
853 | * associated phys, unlink them from the port as well. | |
854 | */ | |
855 | void sas_port_delete(struct sas_port *port) | |
856 | { | |
857 | struct device *dev = &port->dev; | |
858 | struct sas_phy *phy, *tmp_phy; | |
859 | ||
860 | if (port->rphy) { | |
861 | sas_rphy_delete(port->rphy); | |
862 | port->rphy = NULL; | |
863 | } | |
864 | ||
865 | mutex_lock(&port->phy_list_mutex); | |
866 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
867 | port_siblings) { | |
868 | sas_port_delete_link(port, phy); | |
869 | list_del_init(&phy->port_siblings); | |
870 | } | |
871 | mutex_unlock(&port->phy_list_mutex); | |
872 | ||
a0e1b6ef JB |
873 | if (port->is_backlink) { |
874 | struct device *parent = port->dev.parent; | |
875 | ||
876 | sysfs_remove_link(&port->dev.kobj, parent->bus_id); | |
877 | port->is_backlink = 0; | |
878 | } | |
879 | ||
65c92b09 JB |
880 | transport_remove_device(dev); |
881 | device_del(dev); | |
882 | transport_destroy_device(dev); | |
883 | put_device(dev); | |
884 | } | |
885 | EXPORT_SYMBOL(sas_port_delete); | |
886 | ||
887 | /** | |
888 | * scsi_is_sas_port -- check if a struct device represents a SAS port | |
889 | * @dev: device to check | |
890 | * | |
891 | * Returns: | |
892 | * %1 if the device represents a SAS Port, %0 else | |
893 | */ | |
894 | int scsi_is_sas_port(const struct device *dev) | |
895 | { | |
896 | return dev->release == sas_port_release; | |
897 | } | |
898 | EXPORT_SYMBOL(scsi_is_sas_port); | |
899 | ||
900 | /** | |
901 | * sas_port_add_phy - add another phy to a port to form a wide port | |
902 | * @port: port to add the phy to | |
903 | * @phy: phy to add | |
904 | * | |
905 | * When a port is initially created, it is empty (has no phys). All | |
906 | * ports must have at least one phy to operated, and all wide ports | |
907 | * must have at least two. The current code makes no difference | |
908 | * between ports and wide ports, but the only object that can be | |
909 | * connected to a remote device is a port, so ports must be formed on | |
910 | * all devices with phys if they're connected to anything. | |
911 | */ | |
912 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
913 | { | |
914 | mutex_lock(&port->phy_list_mutex); | |
915 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
916 | /* make sure we're already on this port */ | |
917 | struct sas_phy *tmp; | |
918 | ||
919 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
920 | if (tmp == phy) | |
921 | break; | |
922 | /* If this trips, you added a phy that was already | |
923 | * part of a different port */ | |
924 | if (unlikely(tmp != phy)) { | |
925 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id); | |
926 | BUG(); | |
927 | } | |
928 | } else { | |
929 | sas_port_create_link(port, phy); | |
930 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
931 | port->num_phys++; | |
932 | } | |
933 | mutex_unlock(&port->phy_list_mutex); | |
934 | } | |
935 | EXPORT_SYMBOL(sas_port_add_phy); | |
936 | ||
937 | /** | |
938 | * sas_port_delete_phy - remove a phy from a port or wide port | |
939 | * @port: port to remove the phy from | |
940 | * @phy: phy to remove | |
941 | * | |
942 | * This operation is used for tearing down ports again. It must be | |
943 | * done to every port or wide port before calling sas_port_delete. | |
944 | */ | |
945 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
946 | { | |
947 | mutex_lock(&port->phy_list_mutex); | |
948 | sas_port_delete_link(port, phy); | |
949 | list_del_init(&phy->port_siblings); | |
950 | port->num_phys--; | |
951 | mutex_unlock(&port->phy_list_mutex); | |
952 | } | |
953 | EXPORT_SYMBOL(sas_port_delete_phy); | |
954 | ||
a0e1b6ef JB |
955 | void sas_port_mark_backlink(struct sas_port *port) |
956 | { | |
21434966 | 957 | int res; |
a0e1b6ef JB |
958 | struct device *parent = port->dev.parent->parent->parent; |
959 | ||
960 | if (port->is_backlink) | |
961 | return; | |
962 | port->is_backlink = 1; | |
21434966 DW |
963 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
964 | parent->bus_id); | |
965 | if (res) | |
966 | goto err; | |
967 | return; | |
968 | err: | |
969 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
970 | __FUNCTION__, res); | |
a0e1b6ef JB |
971 | |
972 | } | |
973 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
974 | ||
c7ebbbce CH |
975 | /* |
976 | * SAS remote PHY attributes. | |
977 | */ | |
978 | ||
979 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
980 | static ssize_t \ | |
981 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
982 | { \ | |
983 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
984 | \ | |
985 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
986 | } | |
987 | ||
988 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
989 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
990 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
991 | show_sas_rphy_##name, NULL) | |
992 | ||
993 | #define sas_rphy_show_protocol(field, name) \ | |
994 | static ssize_t \ | |
995 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
996 | { \ | |
997 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
998 | \ | |
999 | if (!rphy->field) \ | |
1000 | return snprintf(buf, 20, "none\n"); \ | |
1001 | return get_sas_protocol_names(rphy->field, buf); \ | |
1002 | } | |
1003 | ||
1004 | #define sas_rphy_protocol_attr(field, name) \ | |
1005 | sas_rphy_show_protocol(field, name) \ | |
1006 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
1007 | show_sas_rphy_##name, NULL) | |
1008 | ||
1009 | static ssize_t | |
1010 | show_sas_rphy_device_type(struct class_device *cdev, char *buf) | |
1011 | { | |
1012 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
1013 | ||
1014 | if (!rphy->identify.device_type) | |
1015 | return snprintf(buf, 20, "none\n"); | |
1016 | return get_sas_device_type_names( | |
1017 | rphy->identify.device_type, buf); | |
1018 | } | |
1019 | ||
1020 | static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO, | |
1021 | show_sas_rphy_device_type, NULL); | |
1022 | ||
a0125641 CH |
1023 | static ssize_t |
1024 | show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf) | |
1025 | { | |
1026 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
1027 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
1028 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1029 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1030 | u64 identifier; | |
1031 | int error; | |
1032 | ||
1033 | /* | |
1034 | * Only devices behind an expander are supported, because the | |
1035 | * enclosure identifier is a SMP feature. | |
1036 | */ | |
f4ad7b58 | 1037 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1038 | return -EINVAL; |
1039 | ||
1040 | error = i->f->get_enclosure_identifier(rphy, &identifier); | |
1041 | if (error) | |
1042 | return error; | |
1043 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
1044 | } | |
1045 | ||
1046 | static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, | |
1047 | show_sas_rphy_enclosure_identifier, NULL); | |
1048 | ||
1049 | static ssize_t | |
1050 | show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf) | |
1051 | { | |
1052 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
1053 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
1054 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1055 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1056 | int val; | |
1057 | ||
f4ad7b58 | 1058 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1059 | return -EINVAL; |
1060 | ||
1061 | val = i->f->get_bay_identifier(rphy); | |
1062 | if (val < 0) | |
1063 | return val; | |
1064 | return sprintf(buf, "%d\n", val); | |
1065 | } | |
1066 | ||
1067 | static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, | |
1068 | show_sas_rphy_bay_identifier, NULL); | |
1069 | ||
c7ebbbce CH |
1070 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
1071 | initiator_port_protocols); | |
1072 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
1073 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
1074 | unsigned long long); | |
1075 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
1076 | ||
42ab0360 JB |
1077 | /* only need 8 bytes of data plus header (4 or 8) */ |
1078 | #define BUF_SIZE 64 | |
1079 | ||
1080 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1081 | { | |
1082 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
1083 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
1084 | struct sas_end_device *rdev; | |
1085 | struct scsi_mode_data mode_data; | |
1086 | int res, error; | |
1087 | ||
1088 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
1089 | ||
1090 | rdev = rphy_to_end_device(rphy); | |
1091 | ||
1092 | if (!buffer) | |
1093 | return -ENOMEM; | |
1094 | ||
1095 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1096 | &mode_data, NULL); | |
1097 | ||
1098 | error = -EINVAL; | |
1099 | if (!scsi_status_is_good(res)) | |
1100 | goto out; | |
1101 | ||
1102 | msdata = buffer + mode_data.header_length + | |
1103 | mode_data.block_descriptor_length; | |
1104 | ||
1105 | if (msdata - buffer > BUF_SIZE - 8) | |
1106 | goto out; | |
1107 | ||
1108 | error = 0; | |
1109 | ||
1110 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1111 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1112 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1113 | ||
1114 | out: | |
1115 | kfree(buffer); | |
1116 | return error; | |
1117 | } | |
1118 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1119 | ||
79cb1819 JB |
1120 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1121 | "sas_end_device", NULL, NULL, NULL); | |
1122 | ||
42ab0360 JB |
1123 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1124 | static ssize_t \ | |
1125 | show_sas_end_dev_##name(struct class_device *cdev, char *buf) \ | |
1126 | { \ | |
1127 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1128 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ | |
1129 | \ | |
1130 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1131 | } | |
1132 | ||
1133 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1134 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
1135 | static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ | |
1136 | show_sas_end_dev_##name, NULL) | |
1137 | ||
1138 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1139 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1140 | "%d\n", int); | |
1141 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1142 | "%d\n", int); | |
1143 | ||
79cb1819 JB |
1144 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1145 | "sas_expander", NULL, NULL, NULL); | |
1146 | ||
1147 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1148 | static ssize_t \ | |
1149 | show_sas_expander_##name(struct class_device *cdev, char *buf) \ | |
1150 | { \ | |
1151 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1152 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ | |
1153 | \ | |
1154 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1155 | } | |
1156 | ||
1157 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1158 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
1159 | static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \ | |
1160 | show_sas_expander_##name, NULL) | |
1161 | ||
1162 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1163 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1164 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1165 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1166 | "%s\n", char *); | |
1167 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1168 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1169 | unsigned int); | |
1170 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1171 | |
c7ebbbce | 1172 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1173 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1174 | |
1175 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1176 | { | |
1177 | struct Scsi_Host *shost; | |
1178 | struct sas_internal *i; | |
1179 | ||
1180 | if (!scsi_is_sas_rphy(dev)) | |
1181 | return 0; | |
1182 | shost = dev_to_shost(dev->parent->parent); | |
1183 | ||
1184 | if (!shost->transportt) | |
1185 | return 0; | |
1186 | if (shost->transportt->host_attrs.ac.class != | |
1187 | &sas_host_class.class) | |
1188 | return 0; | |
1189 | ||
1190 | i = to_sas_internal(shost->transportt); | |
1191 | return &i->rphy_attr_cont.ac == cont; | |
1192 | } | |
1193 | ||
42ab0360 JB |
1194 | static int sas_end_dev_match(struct attribute_container *cont, |
1195 | struct device *dev) | |
1196 | { | |
1197 | struct Scsi_Host *shost; | |
1198 | struct sas_internal *i; | |
1199 | struct sas_rphy *rphy; | |
1200 | ||
1201 | if (!scsi_is_sas_rphy(dev)) | |
1202 | return 0; | |
1203 | shost = dev_to_shost(dev->parent->parent); | |
1204 | rphy = dev_to_rphy(dev); | |
1205 | ||
1206 | if (!shost->transportt) | |
1207 | return 0; | |
1208 | if (shost->transportt->host_attrs.ac.class != | |
1209 | &sas_host_class.class) | |
1210 | return 0; | |
1211 | ||
1212 | i = to_sas_internal(shost->transportt); | |
1213 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1214 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1215 | } |
1216 | ||
79cb1819 JB |
1217 | static int sas_expander_match(struct attribute_container *cont, |
1218 | struct device *dev) | |
1219 | { | |
1220 | struct Scsi_Host *shost; | |
1221 | struct sas_internal *i; | |
1222 | struct sas_rphy *rphy; | |
1223 | ||
1224 | if (!scsi_is_sas_rphy(dev)) | |
1225 | return 0; | |
1226 | shost = dev_to_shost(dev->parent->parent); | |
1227 | rphy = dev_to_rphy(dev); | |
1228 | ||
1229 | if (!shost->transportt) | |
1230 | return 0; | |
1231 | if (shost->transportt->host_attrs.ac.class != | |
1232 | &sas_host_class.class) | |
1233 | return 0; | |
1234 | ||
1235 | i = to_sas_internal(shost->transportt); | |
1236 | return &i->expander_attr_cont.ac == cont && | |
1237 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1238 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1239 | } |
1240 | ||
2f8600df | 1241 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1242 | { |
1243 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1244 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce CH |
1245 | |
1246 | put_device(dev->parent); | |
2f8600df | 1247 | kfree(edev); |
c7ebbbce CH |
1248 | } |
1249 | ||
2f8600df | 1250 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1251 | { |
2f8600df JB |
1252 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1253 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1254 | |
2f8600df JB |
1255 | put_device(dev->parent); |
1256 | kfree(edev); | |
c7ebbbce | 1257 | } |
c7ebbbce | 1258 | |
c5943d36 JB |
1259 | /** |
1260 | * sas_rphy_initialize - common rphy intialization | |
1261 | * @rphy: rphy to initialise | |
1262 | * | |
1263 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1264 | * initialise the common rphy component of each. | |
1265 | */ | |
1266 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1267 | { | |
1268 | INIT_LIST_HEAD(&rphy->list); | |
1269 | } | |
1270 | ||
42ab0360 JB |
1271 | /** |
1272 | * sas_end_device_alloc - allocate an rphy for an end device | |
1273 | * | |
1274 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1275 | * | |
1276 | * Returns: | |
1277 | * SAS PHY allocated or %NULL if the allocation failed. | |
1278 | */ | |
65c92b09 | 1279 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1280 | { |
1281 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1282 | struct sas_end_device *rdev; | |
1283 | ||
1284 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1285 | if (!rdev) { | |
42ab0360 JB |
1286 | return NULL; |
1287 | } | |
1288 | ||
1289 | device_initialize(&rdev->rphy.dev); | |
1290 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1291 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1292 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1293 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
1294 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d", | |
1295 | shost->host_no, rphy->scsi_target_id, parent->port_identifier); | |
1296 | } else | |
1297 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d", | |
1298 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1299 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1300 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1301 | transport_setup_device(&rdev->rphy.dev); |
1302 | ||
7aa68e80 FT |
1303 | if (sas_bsg_initialize(shost, &rdev->rphy, rdev->rphy.dev.bus_id)) |
1304 | printk("fail to a bsg device %s\n", rdev->rphy.dev.bus_id); | |
1305 | ||
42ab0360 JB |
1306 | return &rdev->rphy; |
1307 | } | |
1308 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1309 | ||
79cb1819 JB |
1310 | /** |
1311 | * sas_expander_alloc - allocate an rphy for an end device | |
1312 | * | |
1313 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1314 | * | |
1315 | * Returns: | |
1316 | * SAS PHY allocated or %NULL if the allocation failed. | |
1317 | */ | |
65c92b09 | 1318 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1319 | enum sas_device_type type) |
1320 | { | |
1321 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1322 | struct sas_expander_device *rdev; | |
1323 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1324 | ||
1325 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1326 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1327 | ||
1328 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1329 | if (!rdev) { | |
79cb1819 JB |
1330 | return NULL; |
1331 | } | |
1332 | ||
1333 | device_initialize(&rdev->rphy.dev); | |
1334 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1335 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1336 | mutex_lock(&sas_host->lock); |
1337 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1338 | mutex_unlock(&sas_host->lock); | |
1339 | sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d", | |
1340 | shost->host_no, rdev->rphy.scsi_target_id); | |
1341 | rdev->rphy.identify.device_type = type; | |
c5943d36 | 1342 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1343 | transport_setup_device(&rdev->rphy.dev); |
1344 | ||
7aa68e80 FT |
1345 | if (sas_bsg_initialize(shost, &rdev->rphy, rdev->rphy.dev.bus_id)) |
1346 | printk("fail to a bsg device %s\n", rdev->rphy.dev.bus_id); | |
1347 | ||
79cb1819 JB |
1348 | return &rdev->rphy; |
1349 | } | |
1350 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1351 | |
c7ebbbce | 1352 | /** |
1b3c3714 | 1353 | * sas_rphy_add -- add a SAS remote PHY to the device hierarchy |
c7ebbbce CH |
1354 | * @rphy: The remote PHY to be added |
1355 | * | |
1356 | * Publishes a SAS remote PHY to the rest of the system. | |
1357 | */ | |
1358 | int sas_rphy_add(struct sas_rphy *rphy) | |
1359 | { | |
65c92b09 | 1360 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1361 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1362 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1363 | struct sas_identify *identify = &rphy->identify; | |
1364 | int error; | |
1365 | ||
1366 | if (parent->rphy) | |
1367 | return -ENXIO; | |
1368 | parent->rphy = rphy; | |
1369 | ||
1370 | error = device_add(&rphy->dev); | |
1371 | if (error) | |
1372 | return error; | |
1373 | transport_add_device(&rphy->dev); | |
1374 | transport_configure_device(&rphy->dev); | |
1375 | ||
e02f3f59 | 1376 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1377 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1378 | if (identify->device_type == SAS_END_DEVICE && | |
1379 | (identify->target_port_protocols & | |
1380 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1381 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1382 | else if (identify->device_type == SAS_END_DEVICE) |
1383 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1384 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1385 | |
79cb1819 JB |
1386 | if (identify->device_type == SAS_END_DEVICE && |
1387 | rphy->scsi_target_id != -1) { | |
e8bf3941 | 1388 | scsi_scan_target(&rphy->dev, 0, |
c8490f3a | 1389 | rphy->scsi_target_id, SCAN_WILD_CARD, 0); |
c7ebbbce CH |
1390 | } |
1391 | ||
1392 | return 0; | |
1393 | } | |
1394 | EXPORT_SYMBOL(sas_rphy_add); | |
1395 | ||
1396 | /** | |
1397 | * sas_rphy_free -- free a SAS remote PHY | |
1398 | * @rphy SAS remote PHY to free | |
1399 | * | |
1400 | * Frees the specified SAS remote PHY. | |
1401 | * | |
1402 | * Note: | |
1403 | * This function must only be called on a remote | |
1404 | * PHY that has not sucessfully been added using | |
6f63caae | 1405 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
c7ebbbce CH |
1406 | */ |
1407 | void sas_rphy_free(struct sas_rphy *rphy) | |
1408 | { | |
92aab646 | 1409 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1410 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1411 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1412 | ||
e02f3f59 | 1413 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1414 | list_del(&rphy->list); |
e02f3f59 | 1415 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1416 | |
92aab646 | 1417 | transport_destroy_device(dev); |
2f8600df | 1418 | |
92aab646 | 1419 | put_device(dev); |
c7ebbbce CH |
1420 | } |
1421 | EXPORT_SYMBOL(sas_rphy_free); | |
1422 | ||
1423 | /** | |
6f63caae DW |
1424 | * sas_rphy_delete -- remove and free SAS remote PHY |
1425 | * @rphy: SAS remote PHY to remove and free | |
c7ebbbce | 1426 | * |
6f63caae | 1427 | * Removes the specified SAS remote PHY and frees it. |
c7ebbbce CH |
1428 | */ |
1429 | void | |
1430 | sas_rphy_delete(struct sas_rphy *rphy) | |
6f63caae DW |
1431 | { |
1432 | sas_rphy_remove(rphy); | |
1433 | sas_rphy_free(rphy); | |
1434 | } | |
1435 | EXPORT_SYMBOL(sas_rphy_delete); | |
1436 | ||
1437 | /** | |
1438 | * sas_rphy_remove -- remove SAS remote PHY | |
1439 | * @rphy: SAS remote phy to remove | |
1440 | * | |
1441 | * Removes the specified SAS remote PHY. | |
1442 | */ | |
1443 | void | |
1444 | sas_rphy_remove(struct sas_rphy *rphy) | |
c7ebbbce CH |
1445 | { |
1446 | struct device *dev = &rphy->dev; | |
65c92b09 | 1447 | struct sas_port *parent = dev_to_sas_port(dev->parent); |
c7ebbbce | 1448 | |
d4054239 CH |
1449 | switch (rphy->identify.device_type) { |
1450 | case SAS_END_DEVICE: | |
1451 | scsi_remove_target(dev); | |
1452 | break; | |
1453 | case SAS_EDGE_EXPANDER_DEVICE: | |
1454 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1455 | sas_remove_children(dev); |
d4054239 CH |
1456 | break; |
1457 | default: | |
1458 | break; | |
1459 | } | |
c7ebbbce | 1460 | |
fe8b2304 CH |
1461 | transport_remove_device(dev); |
1462 | device_del(dev); | |
c7ebbbce | 1463 | |
33b114e9 | 1464 | parent->rphy = NULL; |
c7ebbbce | 1465 | } |
6f63caae | 1466 | EXPORT_SYMBOL(sas_rphy_remove); |
c7ebbbce CH |
1467 | |
1468 | /** | |
1469 | * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY | |
1470 | * @dev: device to check | |
1471 | * | |
1472 | * Returns: | |
1473 | * %1 if the device represents a SAS remote PHY, %0 else | |
1474 | */ | |
1475 | int scsi_is_sas_rphy(const struct device *dev) | |
1476 | { | |
2f8600df JB |
1477 | return dev->release == sas_end_device_release || |
1478 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1479 | } |
1480 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1481 | ||
1482 | ||
1483 | /* | |
1484 | * SCSI scan helper | |
1485 | */ | |
1486 | ||
e02f3f59 CH |
1487 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
1488 | uint id, uint lun) | |
c7ebbbce CH |
1489 | { |
1490 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1491 | struct sas_rphy *rphy; | |
c7ebbbce | 1492 | |
e02f3f59 | 1493 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1494 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1495 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1496 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1497 | continue; |
1498 | ||
e8bf3941 | 1499 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1500 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
e8bf3941 | 1501 | scsi_scan_target(&rphy->dev, 0, |
e02f3f59 CH |
1502 | rphy->scsi_target_id, lun, 1); |
1503 | } | |
c7ebbbce | 1504 | } |
e02f3f59 | 1505 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1506 | |
e02f3f59 | 1507 | return 0; |
c7ebbbce CH |
1508 | } |
1509 | ||
1510 | ||
1511 | /* | |
1512 | * Setup / Teardown code | |
1513 | */ | |
1514 | ||
d24e1eeb | 1515 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
42ab0360 JB |
1516 | i->private_##attrb[count] = class_device_attr_##field; \ |
1517 | i->private_##attrb[count].attr.mode = perm; \ | |
42ab0360 JB |
1518 | i->attrb[count] = &i->private_##attrb[count]; \ |
1519 | if (test) \ | |
1520 | count++ | |
1521 | ||
d24e1eeb JB |
1522 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
1523 | i->private_##attrb[count] = class_device_attr_##field; \ | |
1524 | i->private_##attrb[count].attr.mode = perm; \ | |
1525 | if (ro_test) { \ | |
1526 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1527 | i->private_##attrb[count].store = NULL; \ | |
1528 | } \ | |
1529 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1530 | if (test) \ | |
1531 | count++ | |
42ab0360 JB |
1532 | |
1533 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1534 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1535 | |
dd9fbb52 | 1536 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1537 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1538 | |
65c92b09 | 1539 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1540 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1541 | |
d24e1eeb JB |
1542 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1543 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1544 | !i->f->set_phy_speed, S_IRUGO) | |
1545 | ||
acbf167d DW |
1546 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
1547 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1548 | !i->f->func, S_IRUGO) | |
1549 | ||
65c92b09 JB |
1550 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1551 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1552 | ||
1553 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1554 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1555 | |
65c92b09 | 1556 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
fe3b5bfe | 1557 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
07ba3a95 | 1558 | |
65c92b09 | 1559 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
fe3b5bfe | 1560 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
dd9fbb52 | 1561 | |
42ab0360 JB |
1562 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1563 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1564 | |
79cb1819 JB |
1565 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1566 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1567 | ||
c7ebbbce CH |
1568 | /** |
1569 | * sas_attach_transport -- instantiate SAS transport template | |
1570 | * @ft: SAS transport class function template | |
1571 | */ | |
1572 | struct scsi_transport_template * | |
1573 | sas_attach_transport(struct sas_function_template *ft) | |
1574 | { | |
1575 | struct sas_internal *i; | |
1576 | int count; | |
1577 | ||
24669f75 | 1578 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1579 | if (!i) |
1580 | return NULL; | |
c7ebbbce | 1581 | |
e02f3f59 | 1582 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1583 | |
1584 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1585 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1586 | i->t.host_attrs.ac.match = sas_host_match; | |
1587 | transport_container_register(&i->t.host_attrs); | |
1588 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1589 | ||
1590 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1591 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1592 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1593 | transport_container_register(&i->phy_attr_cont); | |
1594 | ||
65c92b09 JB |
1595 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1596 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1597 | i->port_attr_cont.ac.match = sas_port_match; | |
1598 | transport_container_register(&i->port_attr_cont); | |
1599 | ||
c7ebbbce CH |
1600 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1601 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1602 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1603 | transport_container_register(&i->rphy_attr_cont); | |
1604 | ||
42ab0360 JB |
1605 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1606 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1607 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1608 | transport_container_register(&i->end_dev_attr_cont); | |
1609 | ||
79cb1819 JB |
1610 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1611 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1612 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1613 | transport_container_register(&i->expander_attr_cont); | |
1614 | ||
c7ebbbce CH |
1615 | i->f = ft; |
1616 | ||
1617 | count = 0; | |
65c92b09 | 1618 | SETUP_PORT_ATTRIBUTE(num_phys); |
c7ebbbce CH |
1619 | i->host_attrs[count] = NULL; |
1620 | ||
1621 | count = 0; | |
65c92b09 JB |
1622 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1623 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1624 | SETUP_PHY_ATTRIBUTE(device_type); | |
1625 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1626 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1627 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1628 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1629 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1630 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1631 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1632 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1633 | |
1634 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1635 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1636 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1637 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1638 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1639 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1640 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1641 | i->phy_attrs[count] = NULL; |
1642 | ||
65c92b09 JB |
1643 | count = 0; |
1644 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1645 | i->port_attrs[count] = NULL; | |
1646 | ||
c7ebbbce CH |
1647 | count = 0; |
1648 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1649 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1650 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1651 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1652 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
dd9fbb52 JB |
1653 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1654 | get_enclosure_identifier); | |
1655 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1656 | get_bay_identifier); | |
c7ebbbce CH |
1657 | i->rphy_attrs[count] = NULL; |
1658 | ||
42ab0360 JB |
1659 | count = 0; |
1660 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1661 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1662 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
1663 | i->end_dev_attrs[count] = NULL; | |
1664 | ||
79cb1819 JB |
1665 | count = 0; |
1666 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1667 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1668 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1669 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1670 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1671 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1672 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1673 | i->expander_attrs[count] = NULL; | |
1674 | ||
c7ebbbce CH |
1675 | return &i->t; |
1676 | } | |
1677 | EXPORT_SYMBOL(sas_attach_transport); | |
1678 | ||
1679 | /** | |
1680 | * sas_release_transport -- release SAS transport template instance | |
1681 | * @t: transport template instance | |
1682 | */ | |
1683 | void sas_release_transport(struct scsi_transport_template *t) | |
1684 | { | |
1685 | struct sas_internal *i = to_sas_internal(t); | |
1686 | ||
1687 | transport_container_unregister(&i->t.host_attrs); | |
1688 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1689 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1690 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1691 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1692 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1693 | |
1694 | kfree(i); | |
1695 | } | |
1696 | EXPORT_SYMBOL(sas_release_transport); | |
1697 | ||
1698 | static __init int sas_transport_init(void) | |
1699 | { | |
1700 | int error; | |
1701 | ||
1702 | error = transport_class_register(&sas_host_class); | |
1703 | if (error) | |
1704 | goto out; | |
1705 | error = transport_class_register(&sas_phy_class); | |
1706 | if (error) | |
1707 | goto out_unregister_transport; | |
65c92b09 | 1708 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1709 | if (error) |
1710 | goto out_unregister_phy; | |
65c92b09 JB |
1711 | error = transport_class_register(&sas_rphy_class); |
1712 | if (error) | |
1713 | goto out_unregister_port; | |
42ab0360 JB |
1714 | error = transport_class_register(&sas_end_dev_class); |
1715 | if (error) | |
1716 | goto out_unregister_rphy; | |
79cb1819 JB |
1717 | error = transport_class_register(&sas_expander_class); |
1718 | if (error) | |
1719 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1720 | |
1721 | return 0; | |
1722 | ||
79cb1819 JB |
1723 | out_unregister_end_dev: |
1724 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1725 | out_unregister_rphy: |
1726 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1727 | out_unregister_port: |
1728 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1729 | out_unregister_phy: |
1730 | transport_class_unregister(&sas_phy_class); | |
1731 | out_unregister_transport: | |
1732 | transport_class_unregister(&sas_host_class); | |
1733 | out: | |
1734 | return error; | |
1735 | ||
1736 | } | |
1737 | ||
1738 | static void __exit sas_transport_exit(void) | |
1739 | { | |
1740 | transport_class_unregister(&sas_host_class); | |
1741 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1742 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1743 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1744 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1745 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1746 | } |
1747 | ||
1748 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1749 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
1750 | MODULE_LICENSE("GPL"); |
1751 | ||
1752 | module_init(sas_transport_init); | |
1753 | module_exit(sas_transport_exit); |