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; |
b6aff669 | 45 | struct request_queue *q; |
c7ebbbce | 46 | u32 next_target_id; |
79cb1819 | 47 | u32 next_expander_id; |
c9fefeb2 | 48 | int next_port_id; |
c7ebbbce CH |
49 | }; |
50 | #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) | |
51 | ||
52 | ||
53 | /* | |
54 | * Hack to allow attributes of the same name in different objects. | |
55 | */ | |
56 | #define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ | |
57 | struct class_device_attribute class_device_attr_##_prefix##_##_name = \ | |
58 | __ATTR(_name,_mode,_show,_store) | |
59 | ||
60 | ||
61 | /* | |
62 | * Pretty printing helpers | |
63 | */ | |
64 | ||
65 | #define sas_bitfield_name_match(title, table) \ | |
66 | static ssize_t \ | |
67 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
68 | { \ | |
69 | char *prefix = ""; \ | |
70 | ssize_t len = 0; \ | |
71 | int i; \ | |
72 | \ | |
6391a113 | 73 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
74 | if (table[i].value & table_key) { \ |
75 | len += sprintf(buf + len, "%s%s", \ | |
76 | prefix, table[i].name); \ | |
77 | prefix = ", "; \ | |
78 | } \ | |
79 | } \ | |
80 | len += sprintf(buf + len, "\n"); \ | |
81 | return len; \ | |
82 | } | |
83 | ||
d24e1eeb JB |
84 | #define sas_bitfield_name_set(title, table) \ |
85 | static ssize_t \ | |
86 | set_sas_##title##_names(u32 *table_key, const char *buf) \ | |
87 | { \ | |
88 | ssize_t len = 0; \ | |
89 | int i; \ | |
90 | \ | |
91 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ | |
92 | len = strlen(table[i].name); \ | |
93 | if (strncmp(buf, table[i].name, len) == 0 && \ | |
94 | (buf[len] == '\n' || buf[len] == '\0')) { \ | |
95 | *table_key = table[i].value; \ | |
96 | return 0; \ | |
97 | } \ | |
98 | } \ | |
99 | return -EINVAL; \ | |
100 | } | |
101 | ||
c7ebbbce CH |
102 | #define sas_bitfield_name_search(title, table) \ |
103 | static ssize_t \ | |
104 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
105 | { \ | |
106 | ssize_t len = 0; \ | |
107 | int i; \ | |
108 | \ | |
6391a113 | 109 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
110 | if (table[i].value == table_key) { \ |
111 | len += sprintf(buf + len, "%s", \ | |
112 | table[i].name); \ | |
113 | break; \ | |
114 | } \ | |
115 | } \ | |
116 | len += sprintf(buf + len, "\n"); \ | |
117 | return len; \ | |
118 | } | |
119 | ||
120 | static struct { | |
121 | u32 value; | |
122 | char *name; | |
123 | } sas_device_type_names[] = { | |
124 | { SAS_PHY_UNUSED, "unused" }, | |
125 | { SAS_END_DEVICE, "end device" }, | |
126 | { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, | |
127 | { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, | |
128 | }; | |
129 | sas_bitfield_name_search(device_type, sas_device_type_names) | |
130 | ||
131 | ||
132 | static struct { | |
133 | u32 value; | |
134 | char *name; | |
135 | } sas_protocol_names[] = { | |
136 | { SAS_PROTOCOL_SATA, "sata" }, | |
137 | { SAS_PROTOCOL_SMP, "smp" }, | |
138 | { SAS_PROTOCOL_STP, "stp" }, | |
139 | { SAS_PROTOCOL_SSP, "ssp" }, | |
140 | }; | |
141 | sas_bitfield_name_match(protocol, sas_protocol_names) | |
142 | ||
143 | static struct { | |
144 | u32 value; | |
145 | char *name; | |
146 | } sas_linkspeed_names[] = { | |
147 | { SAS_LINK_RATE_UNKNOWN, "Unknown" }, | |
148 | { SAS_PHY_DISABLED, "Phy disabled" }, | |
149 | { SAS_LINK_RATE_FAILED, "Link Rate failed" }, | |
150 | { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, | |
151 | { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, | |
152 | { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, | |
7e6dff62 | 153 | { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, |
c7ebbbce CH |
154 | }; |
155 | sas_bitfield_name_search(linkspeed, sas_linkspeed_names) | |
d24e1eeb | 156 | sas_bitfield_name_set(linkspeed, sas_linkspeed_names) |
c7ebbbce | 157 | |
7aa68e80 FT |
158 | static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost, |
159 | struct sas_rphy *rphy) | |
160 | { | |
161 | struct request *req; | |
162 | int ret; | |
163 | int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); | |
164 | ||
165 | while (!blk_queue_plugged(q)) { | |
166 | req = elv_next_request(q); | |
167 | if (!req) | |
168 | break; | |
169 | ||
170 | blkdev_dequeue_request(req); | |
171 | ||
172 | spin_unlock_irq(q->queue_lock); | |
173 | ||
174 | handler = to_sas_internal(shost->transportt)->f->smp_handler; | |
175 | ret = handler(shost, rphy, req); | |
2d507a01 | 176 | req->errors = ret; |
7aa68e80 FT |
177 | |
178 | spin_lock_irq(q->queue_lock); | |
179 | ||
180 | req->end_io(req, ret); | |
181 | } | |
182 | } | |
183 | ||
184 | static void sas_host_smp_request(struct request_queue *q) | |
185 | { | |
186 | sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); | |
187 | } | |
188 | ||
189 | static void sas_non_host_smp_request(struct request_queue *q) | |
190 | { | |
191 | struct sas_rphy *rphy = q->queuedata; | |
192 | sas_smp_request(q, rphy_to_shost(rphy), rphy); | |
193 | } | |
194 | ||
39dca558 | 195 | static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) |
7aa68e80 FT |
196 | { |
197 | struct request_queue *q; | |
198 | int error; | |
39dca558 JB |
199 | struct device *dev; |
200 | char namebuf[BUS_ID_SIZE]; | |
201 | const char *name; | |
7aa68e80 FT |
202 | |
203 | if (!to_sas_internal(shost->transportt)->f->smp_handler) { | |
204 | printk("%s can't handle SMP requests\n", shost->hostt->name); | |
205 | return 0; | |
206 | } | |
207 | ||
39dca558 | 208 | if (rphy) { |
7aa68e80 | 209 | q = blk_init_queue(sas_non_host_smp_request, NULL); |
39dca558 JB |
210 | dev = &rphy->dev; |
211 | name = dev->bus_id; | |
212 | } else { | |
7aa68e80 | 213 | q = blk_init_queue(sas_host_smp_request, NULL); |
39dca558 JB |
214 | dev = &shost->shost_gendev; |
215 | snprintf(namebuf, sizeof(namebuf), | |
216 | "sas_host%d", shost->host_no); | |
217 | name = namebuf; | |
218 | } | |
7aa68e80 FT |
219 | if (!q) |
220 | return -ENOMEM; | |
221 | ||
39dca558 | 222 | error = bsg_register_queue(q, dev, name); |
7aa68e80 FT |
223 | if (error) { |
224 | blk_cleanup_queue(q); | |
225 | return -ENOMEM; | |
226 | } | |
227 | ||
b6aff669 JB |
228 | if (rphy) |
229 | rphy->q = q; | |
230 | else | |
231 | to_sas_host_attrs(shost)->q = q; | |
232 | ||
7aa68e80 FT |
233 | if (rphy) |
234 | q->queuedata = rphy; | |
235 | else | |
236 | q->queuedata = shost; | |
237 | ||
238 | set_bit(QUEUE_FLAG_BIDI, &q->queue_flags); | |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
b6aff669 JB |
243 | static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy) |
244 | { | |
245 | struct request_queue *q; | |
246 | ||
247 | if (rphy) | |
248 | q = rphy->q; | |
249 | else | |
250 | q = to_sas_host_attrs(shost)->q; | |
251 | ||
252 | if (!q) | |
253 | return; | |
254 | ||
255 | bsg_unregister_queue(q); | |
256 | blk_cleanup_queue(q); | |
257 | } | |
258 | ||
c7ebbbce CH |
259 | /* |
260 | * SAS host attributes | |
261 | */ | |
262 | ||
37be6eeb JB |
263 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
264 | struct class_device *cdev) | |
c7ebbbce CH |
265 | { |
266 | struct Scsi_Host *shost = dev_to_shost(dev); | |
267 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
268 | ||
269 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 270 | mutex_init(&sas_host->lock); |
c7ebbbce | 271 | sas_host->next_target_id = 0; |
79cb1819 | 272 | sas_host->next_expander_id = 0; |
c9fefeb2 | 273 | sas_host->next_port_id = 0; |
7aa68e80 | 274 | |
39dca558 | 275 | if (sas_bsg_initialize(shost, NULL)) |
7aa68e80 FT |
276 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", |
277 | shost->host_no); | |
278 | ||
c7ebbbce CH |
279 | return 0; |
280 | } | |
281 | ||
b6aff669 JB |
282 | static int sas_host_remove(struct transport_container *tc, struct device *dev, |
283 | struct class_device *cdev) | |
284 | { | |
285 | struct Scsi_Host *shost = dev_to_shost(dev); | |
286 | ||
287 | sas_bsg_remove(shost, NULL); | |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
c7ebbbce | 292 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
b6aff669 | 293 | "sas_host", sas_host_setup, sas_host_remove, NULL); |
c7ebbbce CH |
294 | |
295 | static int sas_host_match(struct attribute_container *cont, | |
296 | struct device *dev) | |
297 | { | |
298 | struct Scsi_Host *shost; | |
299 | struct sas_internal *i; | |
300 | ||
301 | if (!scsi_is_host_device(dev)) | |
302 | return 0; | |
303 | shost = dev_to_shost(dev); | |
304 | ||
305 | if (!shost->transportt) | |
306 | return 0; | |
307 | if (shost->transportt->host_attrs.ac.class != | |
308 | &sas_host_class.class) | |
309 | return 0; | |
310 | ||
311 | i = to_sas_internal(shost->transportt); | |
312 | return &i->t.host_attrs.ac == cont; | |
313 | } | |
314 | ||
315 | static int do_sas_phy_delete(struct device *dev, void *data) | |
316 | { | |
65c92b09 JB |
317 | int pass = (int)(unsigned long)data; |
318 | ||
319 | if (pass == 0 && scsi_is_sas_port(dev)) | |
320 | sas_port_delete(dev_to_sas_port(dev)); | |
321 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
322 | sas_phy_delete(dev_to_phy(dev)); |
323 | return 0; | |
324 | } | |
325 | ||
65c92b09 | 326 | /** |
eb44820c | 327 | * sas_remove_children - tear down a devices SAS data structures |
65c92b09 JB |
328 | * @dev: device belonging to the sas object |
329 | * | |
330 | * Removes all SAS PHYs and remote PHYs for a given object | |
331 | */ | |
332 | void sas_remove_children(struct device *dev) | |
333 | { | |
334 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
335 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
336 | } | |
337 | EXPORT_SYMBOL(sas_remove_children); | |
338 | ||
c7ebbbce | 339 | /** |
eb44820c | 340 | * sas_remove_host - tear down a Scsi_Host's SAS data structures |
c7ebbbce CH |
341 | * @shost: Scsi Host that is torn down |
342 | * | |
343 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. | |
344 | * Must be called just before scsi_remove_host for SAS HBAs. | |
345 | */ | |
346 | void sas_remove_host(struct Scsi_Host *shost) | |
347 | { | |
65c92b09 | 348 | sas_remove_children(&shost->shost_gendev); |
c7ebbbce CH |
349 | } |
350 | EXPORT_SYMBOL(sas_remove_host); | |
351 | ||
352 | ||
353 | /* | |
65c92b09 | 354 | * SAS Phy attributes |
c7ebbbce CH |
355 | */ |
356 | ||
357 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
358 | static ssize_t \ | |
359 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
360 | { \ | |
361 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
362 | \ | |
363 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
364 | } | |
365 | ||
366 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
367 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
368 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
369 | ||
370 | #define sas_phy_show_protocol(field, name) \ | |
371 | static ssize_t \ | |
372 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
373 | { \ | |
374 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
375 | \ | |
376 | if (!phy->field) \ | |
377 | return snprintf(buf, 20, "none\n"); \ | |
378 | return get_sas_protocol_names(phy->field, buf); \ | |
379 | } | |
380 | ||
381 | #define sas_phy_protocol_attr(field, name) \ | |
382 | sas_phy_show_protocol(field, name) \ | |
383 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
384 | ||
385 | #define sas_phy_show_linkspeed(field) \ | |
386 | static ssize_t \ | |
387 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
388 | { \ | |
389 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
390 | \ | |
391 | return get_sas_linkspeed_names(phy->field, buf); \ | |
392 | } | |
393 | ||
d24e1eeb JB |
394 | /* Fudge to tell if we're minimum or maximum */ |
395 | #define sas_phy_store_linkspeed(field) \ | |
396 | static ssize_t \ | |
397 | store_sas_phy_##field(struct class_device *cdev, const char *buf, \ | |
398 | size_t count) \ | |
399 | { \ | |
400 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
401 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ | |
402 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
403 | u32 value; \ | |
404 | struct sas_phy_linkrates rates = {0}; \ | |
405 | int error; \ | |
406 | \ | |
407 | error = set_sas_linkspeed_names(&value, buf); \ | |
408 | if (error) \ | |
409 | return error; \ | |
410 | rates.field = value; \ | |
411 | error = i->f->set_phy_speed(phy, &rates); \ | |
412 | \ | |
413 | return error ? error : count; \ | |
414 | } | |
415 | ||
416 | #define sas_phy_linkspeed_rw_attr(field) \ | |
417 | sas_phy_show_linkspeed(field) \ | |
418 | sas_phy_store_linkspeed(field) \ | |
419 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ | |
420 | store_sas_phy_##field) | |
421 | ||
c7ebbbce CH |
422 | #define sas_phy_linkspeed_attr(field) \ |
423 | sas_phy_show_linkspeed(field) \ | |
424 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
425 | ||
d24e1eeb | 426 | |
c3ee74c4 CH |
427 | #define sas_phy_show_linkerror(field) \ |
428 | static ssize_t \ | |
429 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
430 | { \ | |
431 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
432 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ | |
433 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
434 | int error; \ | |
435 | \ | |
dd9fbb52 | 436 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
437 | if (error) \ |
438 | return error; \ | |
439 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
440 | } | |
441 | ||
442 | #define sas_phy_linkerror_attr(field) \ | |
443 | sas_phy_show_linkerror(field) \ | |
444 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
445 | ||
446 | ||
c7ebbbce CH |
447 | static ssize_t |
448 | show_sas_device_type(struct class_device *cdev, char *buf) | |
449 | { | |
450 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
451 | ||
452 | if (!phy->identify.device_type) | |
453 | return snprintf(buf, 20, "none\n"); | |
454 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
455 | } | |
c7ebbbce CH |
456 | static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
457 | ||
acbf167d DW |
458 | static ssize_t do_sas_phy_enable(struct class_device *cdev, |
459 | size_t count, int enable) | |
460 | { | |
461 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
462 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
463 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
464 | int error; | |
465 | ||
466 | error = i->f->phy_enable(phy, enable); | |
467 | if (error) | |
468 | return error; | |
469 | phy->enabled = enable; | |
470 | return count; | |
471 | }; | |
472 | ||
473 | static ssize_t store_sas_phy_enable(struct class_device *cdev, | |
474 | const char *buf, size_t count) | |
475 | { | |
476 | if (count < 1) | |
477 | return -EINVAL; | |
478 | ||
479 | switch (buf[0]) { | |
480 | case '0': | |
481 | do_sas_phy_enable(cdev, count, 0); | |
482 | break; | |
483 | case '1': | |
484 | do_sas_phy_enable(cdev, count, 1); | |
485 | break; | |
486 | default: | |
487 | return -EINVAL; | |
488 | } | |
489 | ||
490 | return count; | |
491 | } | |
492 | ||
493 | static ssize_t show_sas_phy_enable(struct class_device *cdev, char *buf) | |
494 | { | |
495 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
496 | ||
497 | return snprintf(buf, 20, "%d", phy->enabled); | |
498 | } | |
499 | ||
500 | static CLASS_DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, | |
501 | store_sas_phy_enable); | |
502 | ||
07ba3a95 CH |
503 | static ssize_t do_sas_phy_reset(struct class_device *cdev, |
504 | size_t count, int hard_reset) | |
505 | { | |
506 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
507 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
508 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
509 | int error; | |
510 | ||
07ba3a95 CH |
511 | error = i->f->phy_reset(phy, hard_reset); |
512 | if (error) | |
513 | return error; | |
514 | return count; | |
515 | }; | |
516 | ||
517 | static ssize_t store_sas_link_reset(struct class_device *cdev, | |
518 | const char *buf, size_t count) | |
519 | { | |
520 | return do_sas_phy_reset(cdev, count, 0); | |
521 | } | |
522 | static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); | |
523 | ||
524 | static ssize_t store_sas_hard_reset(struct class_device *cdev, | |
525 | const char *buf, size_t count) | |
526 | { | |
527 | return do_sas_phy_reset(cdev, count, 1); | |
528 | } | |
529 | static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); | |
530 | ||
c7ebbbce CH |
531 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
532 | initiator_port_protocols); | |
533 | sas_phy_protocol_attr(identify.target_port_protocols, | |
534 | target_port_protocols); | |
535 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
536 | unsigned long long); | |
537 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 538 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
539 | sas_phy_linkspeed_attr(negotiated_linkrate); |
540 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 541 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 542 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 543 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
544 | sas_phy_linkerror_attr(invalid_dword_count); |
545 | sas_phy_linkerror_attr(running_disparity_error_count); | |
546 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
547 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce CH |
548 | |
549 | ||
550 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
551 | "sas_phy", NULL, NULL, NULL); | |
552 | ||
553 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
554 | { | |
555 | struct Scsi_Host *shost; | |
556 | struct sas_internal *i; | |
557 | ||
558 | if (!scsi_is_sas_phy(dev)) | |
559 | return 0; | |
560 | shost = dev_to_shost(dev->parent); | |
561 | ||
562 | if (!shost->transportt) | |
563 | return 0; | |
564 | if (shost->transportt->host_attrs.ac.class != | |
565 | &sas_host_class.class) | |
566 | return 0; | |
567 | ||
568 | i = to_sas_internal(shost->transportt); | |
569 | return &i->phy_attr_cont.ac == cont; | |
570 | } | |
571 | ||
572 | static void sas_phy_release(struct device *dev) | |
573 | { | |
574 | struct sas_phy *phy = dev_to_phy(dev); | |
575 | ||
576 | put_device(dev->parent); | |
577 | kfree(phy); | |
578 | } | |
579 | ||
580 | /** | |
eb44820c | 581 | * sas_phy_alloc - allocates and initialize a SAS PHY structure |
c7ebbbce | 582 | * @parent: Parent device |
d99ca418 | 583 | * @number: Phy index |
c7ebbbce CH |
584 | * |
585 | * Allocates an SAS PHY structure. It will be added in the device tree | |
586 | * below the device specified by @parent, which has to be either a Scsi_Host | |
587 | * or sas_rphy. | |
588 | * | |
589 | * Returns: | |
590 | * SAS PHY allocated or %NULL if the allocation failed. | |
591 | */ | |
592 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
593 | { | |
594 | struct Scsi_Host *shost = dev_to_shost(parent); | |
595 | struct sas_phy *phy; | |
596 | ||
24669f75 | 597 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
598 | if (!phy) |
599 | return NULL; | |
c7ebbbce | 600 | |
c7ebbbce | 601 | phy->number = number; |
acbf167d | 602 | phy->enabled = 1; |
c7ebbbce CH |
603 | |
604 | device_initialize(&phy->dev); | |
605 | phy->dev.parent = get_device(parent); | |
606 | phy->dev.release = sas_phy_release; | |
65c92b09 | 607 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
608 | if (scsi_is_sas_expander_device(parent)) { |
609 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
65c92b09 | 610 | sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
611 | rphy->scsi_target_id, number); |
612 | } else | |
613 | sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); | |
c7ebbbce CH |
614 | |
615 | transport_setup_device(&phy->dev); | |
616 | ||
617 | return phy; | |
618 | } | |
619 | EXPORT_SYMBOL(sas_phy_alloc); | |
620 | ||
621 | /** | |
eb44820c | 622 | * sas_phy_add - add a SAS PHY to the device hierarchy |
c7ebbbce CH |
623 | * @phy: The PHY to be added |
624 | * | |
625 | * Publishes a SAS PHY to the rest of the system. | |
626 | */ | |
627 | int sas_phy_add(struct sas_phy *phy) | |
628 | { | |
629 | int error; | |
630 | ||
631 | error = device_add(&phy->dev); | |
632 | if (!error) { | |
633 | transport_add_device(&phy->dev); | |
634 | transport_configure_device(&phy->dev); | |
635 | } | |
636 | ||
637 | return error; | |
638 | } | |
639 | EXPORT_SYMBOL(sas_phy_add); | |
640 | ||
641 | /** | |
eb44820c | 642 | * sas_phy_free - free a SAS PHY |
c7ebbbce CH |
643 | * @phy: SAS PHY to free |
644 | * | |
645 | * Frees the specified SAS PHY. | |
646 | * | |
647 | * Note: | |
648 | * This function must only be called on a PHY that has not | |
649 | * sucessfully been added using sas_phy_add(). | |
650 | */ | |
651 | void sas_phy_free(struct sas_phy *phy) | |
652 | { | |
653 | transport_destroy_device(&phy->dev); | |
92aab646 | 654 | put_device(&phy->dev); |
c7ebbbce CH |
655 | } |
656 | EXPORT_SYMBOL(sas_phy_free); | |
657 | ||
658 | /** | |
eb44820c | 659 | * sas_phy_delete - remove SAS PHY |
c7ebbbce CH |
660 | * @phy: SAS PHY to remove |
661 | * | |
662 | * Removes the specified SAS PHY. If the SAS PHY has an | |
663 | * associated remote PHY it is removed before. | |
664 | */ | |
665 | void | |
666 | sas_phy_delete(struct sas_phy *phy) | |
667 | { | |
668 | struct device *dev = &phy->dev; | |
669 | ||
65c92b09 JB |
670 | /* this happens if the phy is still part of a port when deleted */ |
671 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
672 | |
673 | transport_remove_device(dev); | |
674 | device_del(dev); | |
675 | transport_destroy_device(dev); | |
92aab646 | 676 | put_device(dev); |
c7ebbbce CH |
677 | } |
678 | EXPORT_SYMBOL(sas_phy_delete); | |
679 | ||
680 | /** | |
eb44820c | 681 | * scsi_is_sas_phy - check if a struct device represents a SAS PHY |
c7ebbbce CH |
682 | * @dev: device to check |
683 | * | |
684 | * Returns: | |
685 | * %1 if the device represents a SAS PHY, %0 else | |
686 | */ | |
687 | int scsi_is_sas_phy(const struct device *dev) | |
688 | { | |
689 | return dev->release == sas_phy_release; | |
690 | } | |
691 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
692 | ||
65c92b09 JB |
693 | /* |
694 | * SAS Port attributes | |
695 | */ | |
696 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
697 | static ssize_t \ | |
698 | show_sas_port_##name(struct class_device *cdev, char *buf) \ | |
699 | { \ | |
700 | struct sas_port *port = transport_class_to_sas_port(cdev); \ | |
701 | \ | |
702 | return snprintf(buf, 20, format_string, cast port->field); \ | |
703 | } | |
704 | ||
705 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
706 | sas_port_show_simple(field, name, format_string, (type)) \ | |
707 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) | |
708 | ||
709 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
710 | ||
711 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
712 | "sas_port", NULL, NULL, NULL); | |
713 | ||
714 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
715 | { | |
716 | struct Scsi_Host *shost; | |
717 | struct sas_internal *i; | |
718 | ||
719 | if (!scsi_is_sas_port(dev)) | |
720 | return 0; | |
721 | shost = dev_to_shost(dev->parent); | |
722 | ||
723 | if (!shost->transportt) | |
724 | return 0; | |
725 | if (shost->transportt->host_attrs.ac.class != | |
726 | &sas_host_class.class) | |
727 | return 0; | |
728 | ||
729 | i = to_sas_internal(shost->transportt); | |
730 | return &i->port_attr_cont.ac == cont; | |
731 | } | |
732 | ||
733 | ||
734 | static void sas_port_release(struct device *dev) | |
735 | { | |
736 | struct sas_port *port = dev_to_sas_port(dev); | |
737 | ||
738 | BUG_ON(!list_empty(&port->phy_list)); | |
739 | ||
740 | put_device(dev->parent); | |
741 | kfree(port); | |
742 | } | |
743 | ||
744 | static void sas_port_create_link(struct sas_port *port, | |
745 | struct sas_phy *phy) | |
746 | { | |
21434966 DW |
747 | int res; |
748 | ||
749 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
750 | phy->dev.bus_id); | |
751 | if (res) | |
752 | goto err; | |
753 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
754 | if (res) | |
755 | goto err; | |
756 | return; | |
757 | err: | |
758 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
759 | __FUNCTION__, res); | |
65c92b09 JB |
760 | } |
761 | ||
762 | static void sas_port_delete_link(struct sas_port *port, | |
763 | struct sas_phy *phy) | |
764 | { | |
765 | sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id); | |
766 | sysfs_remove_link(&phy->dev.kobj, "port"); | |
767 | } | |
768 | ||
769 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
770 | * | |
771 | * @parent: parent device | |
772 | * @port_id: port number | |
773 | * | |
774 | * Allocates a SAS port structure. It will be added to the device tree | |
775 | * below the device specified by @parent which must be either a Scsi_Host | |
776 | * or a sas_expander_device. | |
777 | * | |
778 | * Returns %NULL on error | |
779 | */ | |
780 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
781 | { | |
782 | struct Scsi_Host *shost = dev_to_shost(parent); | |
783 | struct sas_port *port; | |
784 | ||
785 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
786 | if (!port) | |
787 | return NULL; | |
788 | ||
789 | port->port_identifier = port_id; | |
790 | ||
791 | device_initialize(&port->dev); | |
792 | ||
793 | port->dev.parent = get_device(parent); | |
794 | port->dev.release = sas_port_release; | |
795 | ||
796 | mutex_init(&port->phy_list_mutex); | |
797 | INIT_LIST_HEAD(&port->phy_list); | |
798 | ||
799 | if (scsi_is_sas_expander_device(parent)) { | |
800 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
801 | sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no, | |
802 | rphy->scsi_target_id, port->port_identifier); | |
803 | } else | |
804 | sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no, | |
805 | port->port_identifier); | |
806 | ||
807 | transport_setup_device(&port->dev); | |
808 | ||
809 | return port; | |
810 | } | |
811 | EXPORT_SYMBOL(sas_port_alloc); | |
812 | ||
c9fefeb2 JB |
813 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
814 | * | |
815 | * @parent: parent device | |
816 | * | |
817 | * Allocates a SAS port structure and a number to go with it. This | |
818 | * interface is really for adapters where the port number has no | |
819 | * meansing, so the sas class should manage them. It will be added to | |
820 | * the device tree below the device specified by @parent which must be | |
821 | * either a Scsi_Host or a sas_expander_device. | |
822 | * | |
823 | * Returns %NULL on error | |
824 | */ | |
825 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
826 | { | |
827 | int index; | |
828 | struct Scsi_Host *shost = dev_to_shost(parent); | |
829 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
830 | ||
831 | /* FIXME: use idr for this eventually */ | |
832 | mutex_lock(&sas_host->lock); | |
833 | if (scsi_is_sas_expander_device(parent)) { | |
834 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
835 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
836 | ||
837 | index = exp->next_port_id++; | |
838 | } else | |
839 | index = sas_host->next_port_id++; | |
840 | mutex_unlock(&sas_host->lock); | |
841 | return sas_port_alloc(parent, index); | |
842 | } | |
843 | EXPORT_SYMBOL(sas_port_alloc_num); | |
844 | ||
65c92b09 JB |
845 | /** |
846 | * sas_port_add - add a SAS port to the device hierarchy | |
65c92b09 JB |
847 | * @port: port to be added |
848 | * | |
849 | * publishes a port to the rest of the system | |
850 | */ | |
851 | int sas_port_add(struct sas_port *port) | |
852 | { | |
853 | int error; | |
854 | ||
855 | /* No phys should be added until this is made visible */ | |
856 | BUG_ON(!list_empty(&port->phy_list)); | |
857 | ||
858 | error = device_add(&port->dev); | |
859 | ||
860 | if (error) | |
861 | return error; | |
862 | ||
863 | transport_add_device(&port->dev); | |
864 | transport_configure_device(&port->dev); | |
865 | ||
866 | return 0; | |
867 | } | |
868 | EXPORT_SYMBOL(sas_port_add); | |
869 | ||
870 | /** | |
eb44820c | 871 | * sas_port_free - free a SAS PORT |
65c92b09 JB |
872 | * @port: SAS PORT to free |
873 | * | |
874 | * Frees the specified SAS PORT. | |
875 | * | |
876 | * Note: | |
877 | * This function must only be called on a PORT that has not | |
878 | * sucessfully been added using sas_port_add(). | |
879 | */ | |
880 | void sas_port_free(struct sas_port *port) | |
881 | { | |
882 | transport_destroy_device(&port->dev); | |
883 | put_device(&port->dev); | |
884 | } | |
885 | EXPORT_SYMBOL(sas_port_free); | |
886 | ||
887 | /** | |
eb44820c | 888 | * sas_port_delete - remove SAS PORT |
65c92b09 JB |
889 | * @port: SAS PORT to remove |
890 | * | |
891 | * Removes the specified SAS PORT. If the SAS PORT has an | |
892 | * associated phys, unlink them from the port as well. | |
893 | */ | |
894 | void sas_port_delete(struct sas_port *port) | |
895 | { | |
896 | struct device *dev = &port->dev; | |
897 | struct sas_phy *phy, *tmp_phy; | |
898 | ||
899 | if (port->rphy) { | |
900 | sas_rphy_delete(port->rphy); | |
901 | port->rphy = NULL; | |
902 | } | |
903 | ||
904 | mutex_lock(&port->phy_list_mutex); | |
905 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
906 | port_siblings) { | |
907 | sas_port_delete_link(port, phy); | |
908 | list_del_init(&phy->port_siblings); | |
909 | } | |
910 | mutex_unlock(&port->phy_list_mutex); | |
911 | ||
a0e1b6ef JB |
912 | if (port->is_backlink) { |
913 | struct device *parent = port->dev.parent; | |
914 | ||
915 | sysfs_remove_link(&port->dev.kobj, parent->bus_id); | |
916 | port->is_backlink = 0; | |
917 | } | |
918 | ||
65c92b09 JB |
919 | transport_remove_device(dev); |
920 | device_del(dev); | |
921 | transport_destroy_device(dev); | |
922 | put_device(dev); | |
923 | } | |
924 | EXPORT_SYMBOL(sas_port_delete); | |
925 | ||
926 | /** | |
eb44820c | 927 | * scsi_is_sas_port - check if a struct device represents a SAS port |
65c92b09 JB |
928 | * @dev: device to check |
929 | * | |
930 | * Returns: | |
931 | * %1 if the device represents a SAS Port, %0 else | |
932 | */ | |
933 | int scsi_is_sas_port(const struct device *dev) | |
934 | { | |
935 | return dev->release == sas_port_release; | |
936 | } | |
937 | EXPORT_SYMBOL(scsi_is_sas_port); | |
938 | ||
939 | /** | |
940 | * sas_port_add_phy - add another phy to a port to form a wide port | |
941 | * @port: port to add the phy to | |
942 | * @phy: phy to add | |
943 | * | |
944 | * When a port is initially created, it is empty (has no phys). All | |
945 | * ports must have at least one phy to operated, and all wide ports | |
946 | * must have at least two. The current code makes no difference | |
947 | * between ports and wide ports, but the only object that can be | |
948 | * connected to a remote device is a port, so ports must be formed on | |
949 | * all devices with phys if they're connected to anything. | |
950 | */ | |
951 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
952 | { | |
953 | mutex_lock(&port->phy_list_mutex); | |
954 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
955 | /* make sure we're already on this port */ | |
956 | struct sas_phy *tmp; | |
957 | ||
958 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
959 | if (tmp == phy) | |
960 | break; | |
961 | /* If this trips, you added a phy that was already | |
962 | * part of a different port */ | |
963 | if (unlikely(tmp != phy)) { | |
964 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id); | |
965 | BUG(); | |
966 | } | |
967 | } else { | |
968 | sas_port_create_link(port, phy); | |
969 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
970 | port->num_phys++; | |
971 | } | |
972 | mutex_unlock(&port->phy_list_mutex); | |
973 | } | |
974 | EXPORT_SYMBOL(sas_port_add_phy); | |
975 | ||
976 | /** | |
977 | * sas_port_delete_phy - remove a phy from a port or wide port | |
978 | * @port: port to remove the phy from | |
979 | * @phy: phy to remove | |
980 | * | |
981 | * This operation is used for tearing down ports again. It must be | |
982 | * done to every port or wide port before calling sas_port_delete. | |
983 | */ | |
984 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
985 | { | |
986 | mutex_lock(&port->phy_list_mutex); | |
987 | sas_port_delete_link(port, phy); | |
988 | list_del_init(&phy->port_siblings); | |
989 | port->num_phys--; | |
990 | mutex_unlock(&port->phy_list_mutex); | |
991 | } | |
992 | EXPORT_SYMBOL(sas_port_delete_phy); | |
993 | ||
a0e1b6ef JB |
994 | void sas_port_mark_backlink(struct sas_port *port) |
995 | { | |
21434966 | 996 | int res; |
a0e1b6ef JB |
997 | struct device *parent = port->dev.parent->parent->parent; |
998 | ||
999 | if (port->is_backlink) | |
1000 | return; | |
1001 | port->is_backlink = 1; | |
21434966 DW |
1002 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
1003 | parent->bus_id); | |
1004 | if (res) | |
1005 | goto err; | |
1006 | return; | |
1007 | err: | |
1008 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
1009 | __FUNCTION__, res); | |
a0e1b6ef JB |
1010 | |
1011 | } | |
1012 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
1013 | ||
c7ebbbce CH |
1014 | /* |
1015 | * SAS remote PHY attributes. | |
1016 | */ | |
1017 | ||
1018 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
1019 | static ssize_t \ | |
1020 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
1021 | { \ | |
1022 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1023 | \ | |
1024 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
1025 | } | |
1026 | ||
1027 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
1028 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
1029 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
1030 | show_sas_rphy_##name, NULL) | |
1031 | ||
1032 | #define sas_rphy_show_protocol(field, name) \ | |
1033 | static ssize_t \ | |
1034 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
1035 | { \ | |
1036 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1037 | \ | |
1038 | if (!rphy->field) \ | |
1039 | return snprintf(buf, 20, "none\n"); \ | |
1040 | return get_sas_protocol_names(rphy->field, buf); \ | |
1041 | } | |
1042 | ||
1043 | #define sas_rphy_protocol_attr(field, name) \ | |
1044 | sas_rphy_show_protocol(field, name) \ | |
1045 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
1046 | show_sas_rphy_##name, NULL) | |
1047 | ||
1048 | static ssize_t | |
1049 | show_sas_rphy_device_type(struct class_device *cdev, char *buf) | |
1050 | { | |
1051 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
1052 | ||
1053 | if (!rphy->identify.device_type) | |
1054 | return snprintf(buf, 20, "none\n"); | |
1055 | return get_sas_device_type_names( | |
1056 | rphy->identify.device_type, buf); | |
1057 | } | |
1058 | ||
1059 | static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO, | |
1060 | show_sas_rphy_device_type, NULL); | |
1061 | ||
a0125641 CH |
1062 | static ssize_t |
1063 | show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf) | |
1064 | { | |
1065 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
1066 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
1067 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1068 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1069 | u64 identifier; | |
1070 | int error; | |
1071 | ||
1072 | /* | |
1073 | * Only devices behind an expander are supported, because the | |
1074 | * enclosure identifier is a SMP feature. | |
1075 | */ | |
f4ad7b58 | 1076 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1077 | return -EINVAL; |
1078 | ||
1079 | error = i->f->get_enclosure_identifier(rphy, &identifier); | |
1080 | if (error) | |
1081 | return error; | |
1082 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
1083 | } | |
1084 | ||
1085 | static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, | |
1086 | show_sas_rphy_enclosure_identifier, NULL); | |
1087 | ||
1088 | static ssize_t | |
1089 | show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf) | |
1090 | { | |
1091 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
1092 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
1093 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1094 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1095 | int val; | |
1096 | ||
f4ad7b58 | 1097 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1098 | return -EINVAL; |
1099 | ||
1100 | val = i->f->get_bay_identifier(rphy); | |
1101 | if (val < 0) | |
1102 | return val; | |
1103 | return sprintf(buf, "%d\n", val); | |
1104 | } | |
1105 | ||
1106 | static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, | |
1107 | show_sas_rphy_bay_identifier, NULL); | |
1108 | ||
c7ebbbce CH |
1109 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
1110 | initiator_port_protocols); | |
1111 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
1112 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
1113 | unsigned long long); | |
1114 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
1115 | ||
42ab0360 JB |
1116 | /* only need 8 bytes of data plus header (4 or 8) */ |
1117 | #define BUF_SIZE 64 | |
1118 | ||
1119 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1120 | { | |
1121 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
1122 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
1123 | struct sas_end_device *rdev; | |
1124 | struct scsi_mode_data mode_data; | |
1125 | int res, error; | |
1126 | ||
1127 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
1128 | ||
1129 | rdev = rphy_to_end_device(rphy); | |
1130 | ||
1131 | if (!buffer) | |
1132 | return -ENOMEM; | |
1133 | ||
1134 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1135 | &mode_data, NULL); | |
1136 | ||
1137 | error = -EINVAL; | |
1138 | if (!scsi_status_is_good(res)) | |
1139 | goto out; | |
1140 | ||
1141 | msdata = buffer + mode_data.header_length + | |
1142 | mode_data.block_descriptor_length; | |
1143 | ||
1144 | if (msdata - buffer > BUF_SIZE - 8) | |
1145 | goto out; | |
1146 | ||
1147 | error = 0; | |
1148 | ||
1149 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1150 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1151 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1152 | ||
1153 | out: | |
1154 | kfree(buffer); | |
1155 | return error; | |
1156 | } | |
1157 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1158 | ||
79cb1819 JB |
1159 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1160 | "sas_end_device", NULL, NULL, NULL); | |
1161 | ||
42ab0360 JB |
1162 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1163 | static ssize_t \ | |
1164 | show_sas_end_dev_##name(struct class_device *cdev, char *buf) \ | |
1165 | { \ | |
1166 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1167 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ | |
1168 | \ | |
1169 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1170 | } | |
1171 | ||
1172 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1173 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
1174 | static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ | |
1175 | show_sas_end_dev_##name, NULL) | |
1176 | ||
1177 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1178 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1179 | "%d\n", int); | |
1180 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1181 | "%d\n", int); | |
1182 | ||
79cb1819 JB |
1183 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1184 | "sas_expander", NULL, NULL, NULL); | |
1185 | ||
1186 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1187 | static ssize_t \ | |
1188 | show_sas_expander_##name(struct class_device *cdev, char *buf) \ | |
1189 | { \ | |
1190 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1191 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ | |
1192 | \ | |
1193 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1194 | } | |
1195 | ||
1196 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1197 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
1198 | static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \ | |
1199 | show_sas_expander_##name, NULL) | |
1200 | ||
1201 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1202 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1203 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1204 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1205 | "%s\n", char *); | |
1206 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1207 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1208 | unsigned int); | |
1209 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1210 | |
c7ebbbce | 1211 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1212 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1213 | |
1214 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1215 | { | |
1216 | struct Scsi_Host *shost; | |
1217 | struct sas_internal *i; | |
1218 | ||
1219 | if (!scsi_is_sas_rphy(dev)) | |
1220 | return 0; | |
1221 | shost = dev_to_shost(dev->parent->parent); | |
1222 | ||
1223 | if (!shost->transportt) | |
1224 | return 0; | |
1225 | if (shost->transportt->host_attrs.ac.class != | |
1226 | &sas_host_class.class) | |
1227 | return 0; | |
1228 | ||
1229 | i = to_sas_internal(shost->transportt); | |
1230 | return &i->rphy_attr_cont.ac == cont; | |
1231 | } | |
1232 | ||
42ab0360 JB |
1233 | static int sas_end_dev_match(struct attribute_container *cont, |
1234 | struct device *dev) | |
1235 | { | |
1236 | struct Scsi_Host *shost; | |
1237 | struct sas_internal *i; | |
1238 | struct sas_rphy *rphy; | |
1239 | ||
1240 | if (!scsi_is_sas_rphy(dev)) | |
1241 | return 0; | |
1242 | shost = dev_to_shost(dev->parent->parent); | |
1243 | rphy = dev_to_rphy(dev); | |
1244 | ||
1245 | if (!shost->transportt) | |
1246 | return 0; | |
1247 | if (shost->transportt->host_attrs.ac.class != | |
1248 | &sas_host_class.class) | |
1249 | return 0; | |
1250 | ||
1251 | i = to_sas_internal(shost->transportt); | |
1252 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1253 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1254 | } |
1255 | ||
79cb1819 JB |
1256 | static int sas_expander_match(struct attribute_container *cont, |
1257 | struct device *dev) | |
1258 | { | |
1259 | struct Scsi_Host *shost; | |
1260 | struct sas_internal *i; | |
1261 | struct sas_rphy *rphy; | |
1262 | ||
1263 | if (!scsi_is_sas_rphy(dev)) | |
1264 | return 0; | |
1265 | shost = dev_to_shost(dev->parent->parent); | |
1266 | rphy = dev_to_rphy(dev); | |
1267 | ||
1268 | if (!shost->transportt) | |
1269 | return 0; | |
1270 | if (shost->transportt->host_attrs.ac.class != | |
1271 | &sas_host_class.class) | |
1272 | return 0; | |
1273 | ||
1274 | i = to_sas_internal(shost->transportt); | |
1275 | return &i->expander_attr_cont.ac == cont && | |
1276 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1277 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1278 | } |
1279 | ||
2f8600df | 1280 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1281 | { |
1282 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1283 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce CH |
1284 | |
1285 | put_device(dev->parent); | |
2f8600df | 1286 | kfree(edev); |
c7ebbbce CH |
1287 | } |
1288 | ||
2f8600df | 1289 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1290 | { |
2f8600df JB |
1291 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1292 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1293 | |
2f8600df JB |
1294 | put_device(dev->parent); |
1295 | kfree(edev); | |
c7ebbbce | 1296 | } |
c7ebbbce | 1297 | |
c5943d36 JB |
1298 | /** |
1299 | * sas_rphy_initialize - common rphy intialization | |
1300 | * @rphy: rphy to initialise | |
1301 | * | |
1302 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1303 | * initialise the common rphy component of each. | |
1304 | */ | |
1305 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1306 | { | |
1307 | INIT_LIST_HEAD(&rphy->list); | |
1308 | } | |
1309 | ||
42ab0360 JB |
1310 | /** |
1311 | * sas_end_device_alloc - allocate an rphy for an end device | |
eb44820c | 1312 | * @parent: which port |
42ab0360 JB |
1313 | * |
1314 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1315 | * | |
1316 | * Returns: | |
1317 | * SAS PHY allocated or %NULL if the allocation failed. | |
1318 | */ | |
65c92b09 | 1319 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1320 | { |
1321 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1322 | struct sas_end_device *rdev; | |
1323 | ||
1324 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1325 | if (!rdev) { | |
42ab0360 JB |
1326 | return NULL; |
1327 | } | |
1328 | ||
1329 | device_initialize(&rdev->rphy.dev); | |
1330 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1331 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1332 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1333 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
1334 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d", | |
1335 | shost->host_no, rphy->scsi_target_id, parent->port_identifier); | |
1336 | } else | |
1337 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d", | |
1338 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1339 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1340 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1341 | transport_setup_device(&rdev->rphy.dev); |
1342 | ||
1343 | return &rdev->rphy; | |
1344 | } | |
1345 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1346 | ||
79cb1819 JB |
1347 | /** |
1348 | * sas_expander_alloc - allocate an rphy for an end device | |
eb44820c RL |
1349 | * @parent: which port |
1350 | * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE | |
79cb1819 JB |
1351 | * |
1352 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1353 | * | |
1354 | * Returns: | |
1355 | * SAS PHY allocated or %NULL if the allocation failed. | |
1356 | */ | |
65c92b09 | 1357 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1358 | enum sas_device_type type) |
1359 | { | |
1360 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1361 | struct sas_expander_device *rdev; | |
1362 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1363 | ||
1364 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1365 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1366 | ||
1367 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1368 | if (!rdev) { | |
79cb1819 JB |
1369 | return NULL; |
1370 | } | |
1371 | ||
1372 | device_initialize(&rdev->rphy.dev); | |
1373 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1374 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1375 | mutex_lock(&sas_host->lock); |
1376 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1377 | mutex_unlock(&sas_host->lock); | |
1378 | sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d", | |
1379 | shost->host_no, rdev->rphy.scsi_target_id); | |
1380 | rdev->rphy.identify.device_type = type; | |
c5943d36 | 1381 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1382 | transport_setup_device(&rdev->rphy.dev); |
1383 | ||
1384 | return &rdev->rphy; | |
1385 | } | |
1386 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1387 | |
c7ebbbce | 1388 | /** |
eb44820c | 1389 | * sas_rphy_add - add a SAS remote PHY to the device hierarchy |
c7ebbbce CH |
1390 | * @rphy: The remote PHY to be added |
1391 | * | |
1392 | * Publishes a SAS remote PHY to the rest of the system. | |
1393 | */ | |
1394 | int sas_rphy_add(struct sas_rphy *rphy) | |
1395 | { | |
65c92b09 | 1396 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1397 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1398 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1399 | struct sas_identify *identify = &rphy->identify; | |
1400 | int error; | |
1401 | ||
1402 | if (parent->rphy) | |
1403 | return -ENXIO; | |
1404 | parent->rphy = rphy; | |
1405 | ||
1406 | error = device_add(&rphy->dev); | |
1407 | if (error) | |
1408 | return error; | |
1409 | transport_add_device(&rphy->dev); | |
1410 | transport_configure_device(&rphy->dev); | |
39dca558 JB |
1411 | if (sas_bsg_initialize(shost, rphy)) |
1412 | printk("fail to a bsg device %s\n", rphy->dev.bus_id); | |
1413 | ||
c7ebbbce | 1414 | |
e02f3f59 | 1415 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1416 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1417 | if (identify->device_type == SAS_END_DEVICE && | |
1418 | (identify->target_port_protocols & | |
1419 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1420 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1421 | else if (identify->device_type == SAS_END_DEVICE) |
1422 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1423 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1424 | |
79cb1819 JB |
1425 | if (identify->device_type == SAS_END_DEVICE && |
1426 | rphy->scsi_target_id != -1) { | |
e8bf3941 | 1427 | scsi_scan_target(&rphy->dev, 0, |
c8490f3a | 1428 | rphy->scsi_target_id, SCAN_WILD_CARD, 0); |
c7ebbbce CH |
1429 | } |
1430 | ||
1431 | return 0; | |
1432 | } | |
1433 | EXPORT_SYMBOL(sas_rphy_add); | |
1434 | ||
1435 | /** | |
eb44820c RL |
1436 | * sas_rphy_free - free a SAS remote PHY |
1437 | * @rphy: SAS remote PHY to free | |
c7ebbbce CH |
1438 | * |
1439 | * Frees the specified SAS remote PHY. | |
1440 | * | |
1441 | * Note: | |
1442 | * This function must only be called on a remote | |
1443 | * PHY that has not sucessfully been added using | |
6f63caae | 1444 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
c7ebbbce CH |
1445 | */ |
1446 | void sas_rphy_free(struct sas_rphy *rphy) | |
1447 | { | |
92aab646 | 1448 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1449 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1450 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1451 | ||
e02f3f59 | 1452 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1453 | list_del(&rphy->list); |
e02f3f59 | 1454 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1455 | |
b6aff669 JB |
1456 | sas_bsg_remove(shost, rphy); |
1457 | ||
92aab646 | 1458 | transport_destroy_device(dev); |
2f8600df | 1459 | |
92aab646 | 1460 | put_device(dev); |
c7ebbbce CH |
1461 | } |
1462 | EXPORT_SYMBOL(sas_rphy_free); | |
1463 | ||
1464 | /** | |
eb44820c | 1465 | * sas_rphy_delete - remove and free SAS remote PHY |
6f63caae | 1466 | * @rphy: SAS remote PHY to remove and free |
c7ebbbce | 1467 | * |
6f63caae | 1468 | * Removes the specified SAS remote PHY and frees it. |
c7ebbbce CH |
1469 | */ |
1470 | void | |
1471 | sas_rphy_delete(struct sas_rphy *rphy) | |
6f63caae DW |
1472 | { |
1473 | sas_rphy_remove(rphy); | |
1474 | sas_rphy_free(rphy); | |
1475 | } | |
1476 | EXPORT_SYMBOL(sas_rphy_delete); | |
1477 | ||
1478 | /** | |
eb44820c | 1479 | * sas_rphy_remove - remove SAS remote PHY |
6f63caae DW |
1480 | * @rphy: SAS remote phy to remove |
1481 | * | |
1482 | * Removes the specified SAS remote PHY. | |
1483 | */ | |
1484 | void | |
1485 | sas_rphy_remove(struct sas_rphy *rphy) | |
c7ebbbce CH |
1486 | { |
1487 | struct device *dev = &rphy->dev; | |
65c92b09 | 1488 | struct sas_port *parent = dev_to_sas_port(dev->parent); |
c7ebbbce | 1489 | |
d4054239 CH |
1490 | switch (rphy->identify.device_type) { |
1491 | case SAS_END_DEVICE: | |
1492 | scsi_remove_target(dev); | |
1493 | break; | |
1494 | case SAS_EDGE_EXPANDER_DEVICE: | |
1495 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1496 | sas_remove_children(dev); |
d4054239 CH |
1497 | break; |
1498 | default: | |
1499 | break; | |
1500 | } | |
c7ebbbce | 1501 | |
fe8b2304 CH |
1502 | transport_remove_device(dev); |
1503 | device_del(dev); | |
c7ebbbce | 1504 | |
33b114e9 | 1505 | parent->rphy = NULL; |
c7ebbbce | 1506 | } |
6f63caae | 1507 | EXPORT_SYMBOL(sas_rphy_remove); |
c7ebbbce CH |
1508 | |
1509 | /** | |
eb44820c | 1510 | * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY |
c7ebbbce CH |
1511 | * @dev: device to check |
1512 | * | |
1513 | * Returns: | |
1514 | * %1 if the device represents a SAS remote PHY, %0 else | |
1515 | */ | |
1516 | int scsi_is_sas_rphy(const struct device *dev) | |
1517 | { | |
2f8600df JB |
1518 | return dev->release == sas_end_device_release || |
1519 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1520 | } |
1521 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1522 | ||
1523 | ||
1524 | /* | |
1525 | * SCSI scan helper | |
1526 | */ | |
1527 | ||
e02f3f59 CH |
1528 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
1529 | uint id, uint lun) | |
c7ebbbce CH |
1530 | { |
1531 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1532 | struct sas_rphy *rphy; | |
c7ebbbce | 1533 | |
e02f3f59 | 1534 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1535 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1536 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1537 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1538 | continue; |
1539 | ||
e8bf3941 | 1540 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1541 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
e8bf3941 | 1542 | scsi_scan_target(&rphy->dev, 0, |
e02f3f59 CH |
1543 | rphy->scsi_target_id, lun, 1); |
1544 | } | |
c7ebbbce | 1545 | } |
e02f3f59 | 1546 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1547 | |
e02f3f59 | 1548 | return 0; |
c7ebbbce CH |
1549 | } |
1550 | ||
1551 | ||
1552 | /* | |
1553 | * Setup / Teardown code | |
1554 | */ | |
1555 | ||
d24e1eeb | 1556 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
42ab0360 JB |
1557 | i->private_##attrb[count] = class_device_attr_##field; \ |
1558 | i->private_##attrb[count].attr.mode = perm; \ | |
42ab0360 JB |
1559 | i->attrb[count] = &i->private_##attrb[count]; \ |
1560 | if (test) \ | |
1561 | count++ | |
1562 | ||
d24e1eeb JB |
1563 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
1564 | i->private_##attrb[count] = class_device_attr_##field; \ | |
1565 | i->private_##attrb[count].attr.mode = perm; \ | |
1566 | if (ro_test) { \ | |
1567 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1568 | i->private_##attrb[count].store = NULL; \ | |
1569 | } \ | |
1570 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1571 | if (test) \ | |
1572 | count++ | |
42ab0360 JB |
1573 | |
1574 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1575 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1576 | |
dd9fbb52 | 1577 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1578 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1579 | |
65c92b09 | 1580 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1581 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1582 | |
d24e1eeb JB |
1583 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1584 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1585 | !i->f->set_phy_speed, S_IRUGO) | |
1586 | ||
acbf167d DW |
1587 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
1588 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1589 | !i->f->func, S_IRUGO) | |
1590 | ||
65c92b09 JB |
1591 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1592 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1593 | ||
1594 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1595 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1596 | |
65c92b09 | 1597 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
fe3b5bfe | 1598 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
07ba3a95 | 1599 | |
65c92b09 | 1600 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
fe3b5bfe | 1601 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
dd9fbb52 | 1602 | |
42ab0360 JB |
1603 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1604 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1605 | |
79cb1819 JB |
1606 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1607 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1608 | ||
c7ebbbce | 1609 | /** |
eb44820c | 1610 | * sas_attach_transport - instantiate SAS transport template |
c7ebbbce CH |
1611 | * @ft: SAS transport class function template |
1612 | */ | |
1613 | struct scsi_transport_template * | |
1614 | sas_attach_transport(struct sas_function_template *ft) | |
1615 | { | |
1616 | struct sas_internal *i; | |
1617 | int count; | |
1618 | ||
24669f75 | 1619 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1620 | if (!i) |
1621 | return NULL; | |
c7ebbbce | 1622 | |
e02f3f59 | 1623 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1624 | |
1625 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1626 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1627 | i->t.host_attrs.ac.match = sas_host_match; | |
1628 | transport_container_register(&i->t.host_attrs); | |
1629 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1630 | ||
1631 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1632 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1633 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1634 | transport_container_register(&i->phy_attr_cont); | |
1635 | ||
65c92b09 JB |
1636 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1637 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1638 | i->port_attr_cont.ac.match = sas_port_match; | |
1639 | transport_container_register(&i->port_attr_cont); | |
1640 | ||
c7ebbbce CH |
1641 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1642 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1643 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1644 | transport_container_register(&i->rphy_attr_cont); | |
1645 | ||
42ab0360 JB |
1646 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1647 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1648 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1649 | transport_container_register(&i->end_dev_attr_cont); | |
1650 | ||
79cb1819 JB |
1651 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1652 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1653 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1654 | transport_container_register(&i->expander_attr_cont); | |
1655 | ||
c7ebbbce CH |
1656 | i->f = ft; |
1657 | ||
1658 | count = 0; | |
65c92b09 | 1659 | SETUP_PORT_ATTRIBUTE(num_phys); |
c7ebbbce CH |
1660 | i->host_attrs[count] = NULL; |
1661 | ||
1662 | count = 0; | |
65c92b09 JB |
1663 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1664 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1665 | SETUP_PHY_ATTRIBUTE(device_type); | |
1666 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1667 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1668 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1669 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1670 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1671 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1672 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1673 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1674 | |
1675 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1676 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1677 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1678 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1679 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1680 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1681 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1682 | i->phy_attrs[count] = NULL; |
1683 | ||
65c92b09 JB |
1684 | count = 0; |
1685 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1686 | i->port_attrs[count] = NULL; | |
1687 | ||
c7ebbbce CH |
1688 | count = 0; |
1689 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1690 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1691 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1692 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1693 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
dd9fbb52 JB |
1694 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1695 | get_enclosure_identifier); | |
1696 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1697 | get_bay_identifier); | |
c7ebbbce CH |
1698 | i->rphy_attrs[count] = NULL; |
1699 | ||
42ab0360 JB |
1700 | count = 0; |
1701 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1702 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1703 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
1704 | i->end_dev_attrs[count] = NULL; | |
1705 | ||
79cb1819 JB |
1706 | count = 0; |
1707 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1708 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1709 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1710 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1711 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1712 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1713 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1714 | i->expander_attrs[count] = NULL; | |
1715 | ||
c7ebbbce CH |
1716 | return &i->t; |
1717 | } | |
1718 | EXPORT_SYMBOL(sas_attach_transport); | |
1719 | ||
1720 | /** | |
eb44820c | 1721 | * sas_release_transport - release SAS transport template instance |
c7ebbbce CH |
1722 | * @t: transport template instance |
1723 | */ | |
1724 | void sas_release_transport(struct scsi_transport_template *t) | |
1725 | { | |
1726 | struct sas_internal *i = to_sas_internal(t); | |
1727 | ||
1728 | transport_container_unregister(&i->t.host_attrs); | |
1729 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1730 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1731 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1732 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1733 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1734 | |
1735 | kfree(i); | |
1736 | } | |
1737 | EXPORT_SYMBOL(sas_release_transport); | |
1738 | ||
1739 | static __init int sas_transport_init(void) | |
1740 | { | |
1741 | int error; | |
1742 | ||
1743 | error = transport_class_register(&sas_host_class); | |
1744 | if (error) | |
1745 | goto out; | |
1746 | error = transport_class_register(&sas_phy_class); | |
1747 | if (error) | |
1748 | goto out_unregister_transport; | |
65c92b09 | 1749 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1750 | if (error) |
1751 | goto out_unregister_phy; | |
65c92b09 JB |
1752 | error = transport_class_register(&sas_rphy_class); |
1753 | if (error) | |
1754 | goto out_unregister_port; | |
42ab0360 JB |
1755 | error = transport_class_register(&sas_end_dev_class); |
1756 | if (error) | |
1757 | goto out_unregister_rphy; | |
79cb1819 JB |
1758 | error = transport_class_register(&sas_expander_class); |
1759 | if (error) | |
1760 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1761 | |
1762 | return 0; | |
1763 | ||
79cb1819 JB |
1764 | out_unregister_end_dev: |
1765 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1766 | out_unregister_rphy: |
1767 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1768 | out_unregister_port: |
1769 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1770 | out_unregister_phy: |
1771 | transport_class_unregister(&sas_phy_class); | |
1772 | out_unregister_transport: | |
1773 | transport_class_unregister(&sas_host_class); | |
1774 | out: | |
1775 | return error; | |
1776 | ||
1777 | } | |
1778 | ||
1779 | static void __exit sas_transport_exit(void) | |
1780 | { | |
1781 | transport_class_unregister(&sas_host_class); | |
1782 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1783 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1784 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1785 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1786 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1787 | } |
1788 | ||
1789 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1790 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
1791 | MODULE_LICENSE("GPL"); |
1792 | ||
1793 | module_init(sas_transport_init); | |
1794 | module_exit(sas_transport_exit); |