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); | |
176 | ||
177 | spin_lock_irq(q->queue_lock); | |
178 | ||
179 | req->end_io(req, ret); | |
180 | } | |
181 | } | |
182 | ||
183 | static void sas_host_smp_request(struct request_queue *q) | |
184 | { | |
185 | sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); | |
186 | } | |
187 | ||
188 | static void sas_non_host_smp_request(struct request_queue *q) | |
189 | { | |
190 | struct sas_rphy *rphy = q->queuedata; | |
191 | sas_smp_request(q, rphy_to_shost(rphy), rphy); | |
192 | } | |
193 | ||
194 | static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy, | |
195 | char *name) | |
196 | { | |
197 | struct request_queue *q; | |
198 | int error; | |
199 | ||
200 | if (!to_sas_internal(shost->transportt)->f->smp_handler) { | |
201 | printk("%s can't handle SMP requests\n", shost->hostt->name); | |
202 | return 0; | |
203 | } | |
204 | ||
205 | if (rphy) | |
206 | q = blk_init_queue(sas_non_host_smp_request, NULL); | |
207 | else | |
208 | q = blk_init_queue(sas_host_smp_request, NULL); | |
209 | if (!q) | |
210 | return -ENOMEM; | |
211 | ||
212 | error = bsg_register_queue(q, name); | |
213 | if (error) { | |
214 | blk_cleanup_queue(q); | |
215 | return -ENOMEM; | |
216 | } | |
217 | ||
b6aff669 JB |
218 | if (rphy) |
219 | rphy->q = q; | |
220 | else | |
221 | to_sas_host_attrs(shost)->q = q; | |
222 | ||
7aa68e80 FT |
223 | if (rphy) |
224 | q->queuedata = rphy; | |
225 | else | |
226 | q->queuedata = shost; | |
227 | ||
228 | set_bit(QUEUE_FLAG_BIDI, &q->queue_flags); | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
b6aff669 JB |
233 | static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy) |
234 | { | |
235 | struct request_queue *q; | |
236 | ||
237 | if (rphy) | |
238 | q = rphy->q; | |
239 | else | |
240 | q = to_sas_host_attrs(shost)->q; | |
241 | ||
242 | if (!q) | |
243 | return; | |
244 | ||
245 | bsg_unregister_queue(q); | |
246 | blk_cleanup_queue(q); | |
247 | } | |
248 | ||
c7ebbbce CH |
249 | /* |
250 | * SAS host attributes | |
251 | */ | |
252 | ||
37be6eeb JB |
253 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
254 | struct class_device *cdev) | |
c7ebbbce CH |
255 | { |
256 | struct Scsi_Host *shost = dev_to_shost(dev); | |
257 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
7aa68e80 | 258 | char name[BUS_ID_SIZE]; |
c7ebbbce CH |
259 | |
260 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 261 | mutex_init(&sas_host->lock); |
c7ebbbce | 262 | sas_host->next_target_id = 0; |
79cb1819 | 263 | sas_host->next_expander_id = 0; |
c9fefeb2 | 264 | sas_host->next_port_id = 0; |
7aa68e80 FT |
265 | |
266 | snprintf(name, sizeof(name), "sas_host%d", shost->host_no); | |
267 | if (sas_bsg_initialize(shost, NULL, name)) | |
268 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", | |
269 | shost->host_no); | |
270 | ||
c7ebbbce CH |
271 | return 0; |
272 | } | |
273 | ||
b6aff669 JB |
274 | static int sas_host_remove(struct transport_container *tc, struct device *dev, |
275 | struct class_device *cdev) | |
276 | { | |
277 | struct Scsi_Host *shost = dev_to_shost(dev); | |
278 | ||
279 | sas_bsg_remove(shost, NULL); | |
280 | ||
281 | return 0; | |
282 | } | |
283 | ||
c7ebbbce | 284 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
b6aff669 | 285 | "sas_host", sas_host_setup, sas_host_remove, NULL); |
c7ebbbce CH |
286 | |
287 | static int sas_host_match(struct attribute_container *cont, | |
288 | struct device *dev) | |
289 | { | |
290 | struct Scsi_Host *shost; | |
291 | struct sas_internal *i; | |
292 | ||
293 | if (!scsi_is_host_device(dev)) | |
294 | return 0; | |
295 | shost = dev_to_shost(dev); | |
296 | ||
297 | if (!shost->transportt) | |
298 | return 0; | |
299 | if (shost->transportt->host_attrs.ac.class != | |
300 | &sas_host_class.class) | |
301 | return 0; | |
302 | ||
303 | i = to_sas_internal(shost->transportt); | |
304 | return &i->t.host_attrs.ac == cont; | |
305 | } | |
306 | ||
307 | static int do_sas_phy_delete(struct device *dev, void *data) | |
308 | { | |
65c92b09 JB |
309 | int pass = (int)(unsigned long)data; |
310 | ||
311 | if (pass == 0 && scsi_is_sas_port(dev)) | |
312 | sas_port_delete(dev_to_sas_port(dev)); | |
313 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
314 | sas_phy_delete(dev_to_phy(dev)); |
315 | return 0; | |
316 | } | |
317 | ||
65c92b09 JB |
318 | /** |
319 | * sas_remove_children -- tear down a devices SAS data structures | |
320 | * @dev: device belonging to the sas object | |
321 | * | |
322 | * Removes all SAS PHYs and remote PHYs for a given object | |
323 | */ | |
324 | void sas_remove_children(struct device *dev) | |
325 | { | |
326 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
327 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
328 | } | |
329 | EXPORT_SYMBOL(sas_remove_children); | |
330 | ||
c7ebbbce CH |
331 | /** |
332 | * sas_remove_host -- tear down a Scsi_Host's SAS data structures | |
333 | * @shost: Scsi Host that is torn down | |
334 | * | |
335 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. | |
336 | * Must be called just before scsi_remove_host for SAS HBAs. | |
337 | */ | |
338 | void sas_remove_host(struct Scsi_Host *shost) | |
339 | { | |
65c92b09 | 340 | sas_remove_children(&shost->shost_gendev); |
c7ebbbce CH |
341 | } |
342 | EXPORT_SYMBOL(sas_remove_host); | |
343 | ||
344 | ||
345 | /* | |
65c92b09 | 346 | * SAS Phy attributes |
c7ebbbce CH |
347 | */ |
348 | ||
349 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
350 | static ssize_t \ | |
351 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
352 | { \ | |
353 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
354 | \ | |
355 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
356 | } | |
357 | ||
358 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
359 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
360 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
361 | ||
362 | #define sas_phy_show_protocol(field, name) \ | |
363 | static ssize_t \ | |
364 | show_sas_phy_##name(struct class_device *cdev, char *buf) \ | |
365 | { \ | |
366 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
367 | \ | |
368 | if (!phy->field) \ | |
369 | return snprintf(buf, 20, "none\n"); \ | |
370 | return get_sas_protocol_names(phy->field, buf); \ | |
371 | } | |
372 | ||
373 | #define sas_phy_protocol_attr(field, name) \ | |
374 | sas_phy_show_protocol(field, name) \ | |
375 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) | |
376 | ||
377 | #define sas_phy_show_linkspeed(field) \ | |
378 | static ssize_t \ | |
379 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
380 | { \ | |
381 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
382 | \ | |
383 | return get_sas_linkspeed_names(phy->field, buf); \ | |
384 | } | |
385 | ||
d24e1eeb JB |
386 | /* Fudge to tell if we're minimum or maximum */ |
387 | #define sas_phy_store_linkspeed(field) \ | |
388 | static ssize_t \ | |
389 | store_sas_phy_##field(struct class_device *cdev, const char *buf, \ | |
390 | size_t count) \ | |
391 | { \ | |
392 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
393 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ | |
394 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
395 | u32 value; \ | |
396 | struct sas_phy_linkrates rates = {0}; \ | |
397 | int error; \ | |
398 | \ | |
399 | error = set_sas_linkspeed_names(&value, buf); \ | |
400 | if (error) \ | |
401 | return error; \ | |
402 | rates.field = value; \ | |
403 | error = i->f->set_phy_speed(phy, &rates); \ | |
404 | \ | |
405 | return error ? error : count; \ | |
406 | } | |
407 | ||
408 | #define sas_phy_linkspeed_rw_attr(field) \ | |
409 | sas_phy_show_linkspeed(field) \ | |
410 | sas_phy_store_linkspeed(field) \ | |
411 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ | |
412 | store_sas_phy_##field) | |
413 | ||
c7ebbbce CH |
414 | #define sas_phy_linkspeed_attr(field) \ |
415 | sas_phy_show_linkspeed(field) \ | |
416 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
417 | ||
d24e1eeb | 418 | |
c3ee74c4 CH |
419 | #define sas_phy_show_linkerror(field) \ |
420 | static ssize_t \ | |
421 | show_sas_phy_##field(struct class_device *cdev, char *buf) \ | |
422 | { \ | |
423 | struct sas_phy *phy = transport_class_to_phy(cdev); \ | |
424 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ | |
425 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
426 | int error; \ | |
427 | \ | |
dd9fbb52 | 428 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
429 | if (error) \ |
430 | return error; \ | |
431 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
432 | } | |
433 | ||
434 | #define sas_phy_linkerror_attr(field) \ | |
435 | sas_phy_show_linkerror(field) \ | |
436 | static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) | |
437 | ||
438 | ||
c7ebbbce CH |
439 | static ssize_t |
440 | show_sas_device_type(struct class_device *cdev, char *buf) | |
441 | { | |
442 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
443 | ||
444 | if (!phy->identify.device_type) | |
445 | return snprintf(buf, 20, "none\n"); | |
446 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
447 | } | |
c7ebbbce CH |
448 | static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
449 | ||
acbf167d DW |
450 | static ssize_t do_sas_phy_enable(struct class_device *cdev, |
451 | size_t count, int enable) | |
452 | { | |
453 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
454 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
455 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
456 | int error; | |
457 | ||
458 | error = i->f->phy_enable(phy, enable); | |
459 | if (error) | |
460 | return error; | |
461 | phy->enabled = enable; | |
462 | return count; | |
463 | }; | |
464 | ||
465 | static ssize_t store_sas_phy_enable(struct class_device *cdev, | |
466 | const char *buf, size_t count) | |
467 | { | |
468 | if (count < 1) | |
469 | return -EINVAL; | |
470 | ||
471 | switch (buf[0]) { | |
472 | case '0': | |
473 | do_sas_phy_enable(cdev, count, 0); | |
474 | break; | |
475 | case '1': | |
476 | do_sas_phy_enable(cdev, count, 1); | |
477 | break; | |
478 | default: | |
479 | return -EINVAL; | |
480 | } | |
481 | ||
482 | return count; | |
483 | } | |
484 | ||
485 | static ssize_t show_sas_phy_enable(struct class_device *cdev, char *buf) | |
486 | { | |
487 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
488 | ||
489 | return snprintf(buf, 20, "%d", phy->enabled); | |
490 | } | |
491 | ||
492 | static CLASS_DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, | |
493 | store_sas_phy_enable); | |
494 | ||
07ba3a95 CH |
495 | static ssize_t do_sas_phy_reset(struct class_device *cdev, |
496 | size_t count, int hard_reset) | |
497 | { | |
498 | struct sas_phy *phy = transport_class_to_phy(cdev); | |
499 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
500 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
501 | int error; | |
502 | ||
07ba3a95 CH |
503 | error = i->f->phy_reset(phy, hard_reset); |
504 | if (error) | |
505 | return error; | |
506 | return count; | |
507 | }; | |
508 | ||
509 | static ssize_t store_sas_link_reset(struct class_device *cdev, | |
510 | const char *buf, size_t count) | |
511 | { | |
512 | return do_sas_phy_reset(cdev, count, 0); | |
513 | } | |
514 | static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); | |
515 | ||
516 | static ssize_t store_sas_hard_reset(struct class_device *cdev, | |
517 | const char *buf, size_t count) | |
518 | { | |
519 | return do_sas_phy_reset(cdev, count, 1); | |
520 | } | |
521 | static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); | |
522 | ||
c7ebbbce CH |
523 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
524 | initiator_port_protocols); | |
525 | sas_phy_protocol_attr(identify.target_port_protocols, | |
526 | target_port_protocols); | |
527 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
528 | unsigned long long); | |
529 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 530 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
531 | sas_phy_linkspeed_attr(negotiated_linkrate); |
532 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 533 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 534 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 535 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
536 | sas_phy_linkerror_attr(invalid_dword_count); |
537 | sas_phy_linkerror_attr(running_disparity_error_count); | |
538 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
539 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce CH |
540 | |
541 | ||
542 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
543 | "sas_phy", NULL, NULL, NULL); | |
544 | ||
545 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
546 | { | |
547 | struct Scsi_Host *shost; | |
548 | struct sas_internal *i; | |
549 | ||
550 | if (!scsi_is_sas_phy(dev)) | |
551 | return 0; | |
552 | shost = dev_to_shost(dev->parent); | |
553 | ||
554 | if (!shost->transportt) | |
555 | return 0; | |
556 | if (shost->transportt->host_attrs.ac.class != | |
557 | &sas_host_class.class) | |
558 | return 0; | |
559 | ||
560 | i = to_sas_internal(shost->transportt); | |
561 | return &i->phy_attr_cont.ac == cont; | |
562 | } | |
563 | ||
564 | static void sas_phy_release(struct device *dev) | |
565 | { | |
566 | struct sas_phy *phy = dev_to_phy(dev); | |
567 | ||
568 | put_device(dev->parent); | |
569 | kfree(phy); | |
570 | } | |
571 | ||
572 | /** | |
573 | * sas_phy_alloc -- allocates and initialize a SAS PHY structure | |
574 | * @parent: Parent device | |
d99ca418 | 575 | * @number: Phy index |
c7ebbbce CH |
576 | * |
577 | * Allocates an SAS PHY structure. It will be added in the device tree | |
578 | * below the device specified by @parent, which has to be either a Scsi_Host | |
579 | * or sas_rphy. | |
580 | * | |
581 | * Returns: | |
582 | * SAS PHY allocated or %NULL if the allocation failed. | |
583 | */ | |
584 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
585 | { | |
586 | struct Scsi_Host *shost = dev_to_shost(parent); | |
587 | struct sas_phy *phy; | |
588 | ||
24669f75 | 589 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
590 | if (!phy) |
591 | return NULL; | |
c7ebbbce | 592 | |
c7ebbbce | 593 | phy->number = number; |
acbf167d | 594 | phy->enabled = 1; |
c7ebbbce CH |
595 | |
596 | device_initialize(&phy->dev); | |
597 | phy->dev.parent = get_device(parent); | |
598 | phy->dev.release = sas_phy_release; | |
65c92b09 | 599 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
600 | if (scsi_is_sas_expander_device(parent)) { |
601 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
65c92b09 | 602 | sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
603 | rphy->scsi_target_id, number); |
604 | } else | |
605 | sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); | |
c7ebbbce CH |
606 | |
607 | transport_setup_device(&phy->dev); | |
608 | ||
609 | return phy; | |
610 | } | |
611 | EXPORT_SYMBOL(sas_phy_alloc); | |
612 | ||
613 | /** | |
1b3c3714 | 614 | * sas_phy_add -- add a SAS PHY to the device hierarchy |
c7ebbbce CH |
615 | * @phy: The PHY to be added |
616 | * | |
617 | * Publishes a SAS PHY to the rest of the system. | |
618 | */ | |
619 | int sas_phy_add(struct sas_phy *phy) | |
620 | { | |
621 | int error; | |
622 | ||
623 | error = device_add(&phy->dev); | |
624 | if (!error) { | |
625 | transport_add_device(&phy->dev); | |
626 | transport_configure_device(&phy->dev); | |
627 | } | |
628 | ||
629 | return error; | |
630 | } | |
631 | EXPORT_SYMBOL(sas_phy_add); | |
632 | ||
633 | /** | |
634 | * sas_phy_free -- free a SAS PHY | |
635 | * @phy: SAS PHY to free | |
636 | * | |
637 | * Frees the specified SAS PHY. | |
638 | * | |
639 | * Note: | |
640 | * This function must only be called on a PHY that has not | |
641 | * sucessfully been added using sas_phy_add(). | |
642 | */ | |
643 | void sas_phy_free(struct sas_phy *phy) | |
644 | { | |
645 | transport_destroy_device(&phy->dev); | |
92aab646 | 646 | put_device(&phy->dev); |
c7ebbbce CH |
647 | } |
648 | EXPORT_SYMBOL(sas_phy_free); | |
649 | ||
650 | /** | |
651 | * sas_phy_delete -- remove SAS PHY | |
652 | * @phy: SAS PHY to remove | |
653 | * | |
654 | * Removes the specified SAS PHY. If the SAS PHY has an | |
655 | * associated remote PHY it is removed before. | |
656 | */ | |
657 | void | |
658 | sas_phy_delete(struct sas_phy *phy) | |
659 | { | |
660 | struct device *dev = &phy->dev; | |
661 | ||
65c92b09 JB |
662 | /* this happens if the phy is still part of a port when deleted */ |
663 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
664 | |
665 | transport_remove_device(dev); | |
666 | device_del(dev); | |
667 | transport_destroy_device(dev); | |
92aab646 | 668 | put_device(dev); |
c7ebbbce CH |
669 | } |
670 | EXPORT_SYMBOL(sas_phy_delete); | |
671 | ||
672 | /** | |
673 | * scsi_is_sas_phy -- check if a struct device represents a SAS PHY | |
674 | * @dev: device to check | |
675 | * | |
676 | * Returns: | |
677 | * %1 if the device represents a SAS PHY, %0 else | |
678 | */ | |
679 | int scsi_is_sas_phy(const struct device *dev) | |
680 | { | |
681 | return dev->release == sas_phy_release; | |
682 | } | |
683 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
684 | ||
65c92b09 JB |
685 | /* |
686 | * SAS Port attributes | |
687 | */ | |
688 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
689 | static ssize_t \ | |
690 | show_sas_port_##name(struct class_device *cdev, char *buf) \ | |
691 | { \ | |
692 | struct sas_port *port = transport_class_to_sas_port(cdev); \ | |
693 | \ | |
694 | return snprintf(buf, 20, format_string, cast port->field); \ | |
695 | } | |
696 | ||
697 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
698 | sas_port_show_simple(field, name, format_string, (type)) \ | |
699 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) | |
700 | ||
701 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
702 | ||
703 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
704 | "sas_port", NULL, NULL, NULL); | |
705 | ||
706 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
707 | { | |
708 | struct Scsi_Host *shost; | |
709 | struct sas_internal *i; | |
710 | ||
711 | if (!scsi_is_sas_port(dev)) | |
712 | return 0; | |
713 | shost = dev_to_shost(dev->parent); | |
714 | ||
715 | if (!shost->transportt) | |
716 | return 0; | |
717 | if (shost->transportt->host_attrs.ac.class != | |
718 | &sas_host_class.class) | |
719 | return 0; | |
720 | ||
721 | i = to_sas_internal(shost->transportt); | |
722 | return &i->port_attr_cont.ac == cont; | |
723 | } | |
724 | ||
725 | ||
726 | static void sas_port_release(struct device *dev) | |
727 | { | |
728 | struct sas_port *port = dev_to_sas_port(dev); | |
729 | ||
730 | BUG_ON(!list_empty(&port->phy_list)); | |
731 | ||
732 | put_device(dev->parent); | |
733 | kfree(port); | |
734 | } | |
735 | ||
736 | static void sas_port_create_link(struct sas_port *port, | |
737 | struct sas_phy *phy) | |
738 | { | |
21434966 DW |
739 | int res; |
740 | ||
741 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
742 | phy->dev.bus_id); | |
743 | if (res) | |
744 | goto err; | |
745 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
746 | if (res) | |
747 | goto err; | |
748 | return; | |
749 | err: | |
750 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
751 | __FUNCTION__, res); | |
65c92b09 JB |
752 | } |
753 | ||
754 | static void sas_port_delete_link(struct sas_port *port, | |
755 | struct sas_phy *phy) | |
756 | { | |
757 | sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id); | |
758 | sysfs_remove_link(&phy->dev.kobj, "port"); | |
759 | } | |
760 | ||
761 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
762 | * | |
763 | * @parent: parent device | |
764 | * @port_id: port number | |
765 | * | |
766 | * Allocates a SAS port structure. It will be added to the device tree | |
767 | * below the device specified by @parent which must be either a Scsi_Host | |
768 | * or a sas_expander_device. | |
769 | * | |
770 | * Returns %NULL on error | |
771 | */ | |
772 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
773 | { | |
774 | struct Scsi_Host *shost = dev_to_shost(parent); | |
775 | struct sas_port *port; | |
776 | ||
777 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
778 | if (!port) | |
779 | return NULL; | |
780 | ||
781 | port->port_identifier = port_id; | |
782 | ||
783 | device_initialize(&port->dev); | |
784 | ||
785 | port->dev.parent = get_device(parent); | |
786 | port->dev.release = sas_port_release; | |
787 | ||
788 | mutex_init(&port->phy_list_mutex); | |
789 | INIT_LIST_HEAD(&port->phy_list); | |
790 | ||
791 | if (scsi_is_sas_expander_device(parent)) { | |
792 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
793 | sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no, | |
794 | rphy->scsi_target_id, port->port_identifier); | |
795 | } else | |
796 | sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no, | |
797 | port->port_identifier); | |
798 | ||
799 | transport_setup_device(&port->dev); | |
800 | ||
801 | return port; | |
802 | } | |
803 | EXPORT_SYMBOL(sas_port_alloc); | |
804 | ||
c9fefeb2 JB |
805 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
806 | * | |
807 | * @parent: parent device | |
808 | * | |
809 | * Allocates a SAS port structure and a number to go with it. This | |
810 | * interface is really for adapters where the port number has no | |
811 | * meansing, so the sas class should manage them. It will be added to | |
812 | * the device tree below the device specified by @parent which must be | |
813 | * either a Scsi_Host or a sas_expander_device. | |
814 | * | |
815 | * Returns %NULL on error | |
816 | */ | |
817 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
818 | { | |
819 | int index; | |
820 | struct Scsi_Host *shost = dev_to_shost(parent); | |
821 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
822 | ||
823 | /* FIXME: use idr for this eventually */ | |
824 | mutex_lock(&sas_host->lock); | |
825 | if (scsi_is_sas_expander_device(parent)) { | |
826 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
827 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
828 | ||
829 | index = exp->next_port_id++; | |
830 | } else | |
831 | index = sas_host->next_port_id++; | |
832 | mutex_unlock(&sas_host->lock); | |
833 | return sas_port_alloc(parent, index); | |
834 | } | |
835 | EXPORT_SYMBOL(sas_port_alloc_num); | |
836 | ||
65c92b09 JB |
837 | /** |
838 | * sas_port_add - add a SAS port to the device hierarchy | |
839 | * | |
840 | * @port: port to be added | |
841 | * | |
842 | * publishes a port to the rest of the system | |
843 | */ | |
844 | int sas_port_add(struct sas_port *port) | |
845 | { | |
846 | int error; | |
847 | ||
848 | /* No phys should be added until this is made visible */ | |
849 | BUG_ON(!list_empty(&port->phy_list)); | |
850 | ||
851 | error = device_add(&port->dev); | |
852 | ||
853 | if (error) | |
854 | return error; | |
855 | ||
856 | transport_add_device(&port->dev); | |
857 | transport_configure_device(&port->dev); | |
858 | ||
859 | return 0; | |
860 | } | |
861 | EXPORT_SYMBOL(sas_port_add); | |
862 | ||
863 | /** | |
864 | * sas_port_free -- free a SAS PORT | |
865 | * @port: SAS PORT to free | |
866 | * | |
867 | * Frees the specified SAS PORT. | |
868 | * | |
869 | * Note: | |
870 | * This function must only be called on a PORT that has not | |
871 | * sucessfully been added using sas_port_add(). | |
872 | */ | |
873 | void sas_port_free(struct sas_port *port) | |
874 | { | |
875 | transport_destroy_device(&port->dev); | |
876 | put_device(&port->dev); | |
877 | } | |
878 | EXPORT_SYMBOL(sas_port_free); | |
879 | ||
880 | /** | |
881 | * sas_port_delete -- remove SAS PORT | |
882 | * @port: SAS PORT to remove | |
883 | * | |
884 | * Removes the specified SAS PORT. If the SAS PORT has an | |
885 | * associated phys, unlink them from the port as well. | |
886 | */ | |
887 | void sas_port_delete(struct sas_port *port) | |
888 | { | |
889 | struct device *dev = &port->dev; | |
890 | struct sas_phy *phy, *tmp_phy; | |
891 | ||
892 | if (port->rphy) { | |
893 | sas_rphy_delete(port->rphy); | |
894 | port->rphy = NULL; | |
895 | } | |
896 | ||
897 | mutex_lock(&port->phy_list_mutex); | |
898 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
899 | port_siblings) { | |
900 | sas_port_delete_link(port, phy); | |
901 | list_del_init(&phy->port_siblings); | |
902 | } | |
903 | mutex_unlock(&port->phy_list_mutex); | |
904 | ||
a0e1b6ef JB |
905 | if (port->is_backlink) { |
906 | struct device *parent = port->dev.parent; | |
907 | ||
908 | sysfs_remove_link(&port->dev.kobj, parent->bus_id); | |
909 | port->is_backlink = 0; | |
910 | } | |
911 | ||
65c92b09 JB |
912 | transport_remove_device(dev); |
913 | device_del(dev); | |
914 | transport_destroy_device(dev); | |
915 | put_device(dev); | |
916 | } | |
917 | EXPORT_SYMBOL(sas_port_delete); | |
918 | ||
919 | /** | |
920 | * scsi_is_sas_port -- check if a struct device represents a SAS port | |
921 | * @dev: device to check | |
922 | * | |
923 | * Returns: | |
924 | * %1 if the device represents a SAS Port, %0 else | |
925 | */ | |
926 | int scsi_is_sas_port(const struct device *dev) | |
927 | { | |
928 | return dev->release == sas_port_release; | |
929 | } | |
930 | EXPORT_SYMBOL(scsi_is_sas_port); | |
931 | ||
932 | /** | |
933 | * sas_port_add_phy - add another phy to a port to form a wide port | |
934 | * @port: port to add the phy to | |
935 | * @phy: phy to add | |
936 | * | |
937 | * When a port is initially created, it is empty (has no phys). All | |
938 | * ports must have at least one phy to operated, and all wide ports | |
939 | * must have at least two. The current code makes no difference | |
940 | * between ports and wide ports, but the only object that can be | |
941 | * connected to a remote device is a port, so ports must be formed on | |
942 | * all devices with phys if they're connected to anything. | |
943 | */ | |
944 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
945 | { | |
946 | mutex_lock(&port->phy_list_mutex); | |
947 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
948 | /* make sure we're already on this port */ | |
949 | struct sas_phy *tmp; | |
950 | ||
951 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
952 | if (tmp == phy) | |
953 | break; | |
954 | /* If this trips, you added a phy that was already | |
955 | * part of a different port */ | |
956 | if (unlikely(tmp != phy)) { | |
957 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id); | |
958 | BUG(); | |
959 | } | |
960 | } else { | |
961 | sas_port_create_link(port, phy); | |
962 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
963 | port->num_phys++; | |
964 | } | |
965 | mutex_unlock(&port->phy_list_mutex); | |
966 | } | |
967 | EXPORT_SYMBOL(sas_port_add_phy); | |
968 | ||
969 | /** | |
970 | * sas_port_delete_phy - remove a phy from a port or wide port | |
971 | * @port: port to remove the phy from | |
972 | * @phy: phy to remove | |
973 | * | |
974 | * This operation is used for tearing down ports again. It must be | |
975 | * done to every port or wide port before calling sas_port_delete. | |
976 | */ | |
977 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
978 | { | |
979 | mutex_lock(&port->phy_list_mutex); | |
980 | sas_port_delete_link(port, phy); | |
981 | list_del_init(&phy->port_siblings); | |
982 | port->num_phys--; | |
983 | mutex_unlock(&port->phy_list_mutex); | |
984 | } | |
985 | EXPORT_SYMBOL(sas_port_delete_phy); | |
986 | ||
a0e1b6ef JB |
987 | void sas_port_mark_backlink(struct sas_port *port) |
988 | { | |
21434966 | 989 | int res; |
a0e1b6ef JB |
990 | struct device *parent = port->dev.parent->parent->parent; |
991 | ||
992 | if (port->is_backlink) | |
993 | return; | |
994 | port->is_backlink = 1; | |
21434966 DW |
995 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
996 | parent->bus_id); | |
997 | if (res) | |
998 | goto err; | |
999 | return; | |
1000 | err: | |
1001 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
1002 | __FUNCTION__, res); | |
a0e1b6ef JB |
1003 | |
1004 | } | |
1005 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
1006 | ||
c7ebbbce CH |
1007 | /* |
1008 | * SAS remote PHY attributes. | |
1009 | */ | |
1010 | ||
1011 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
1012 | static ssize_t \ | |
1013 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
1014 | { \ | |
1015 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1016 | \ | |
1017 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
1018 | } | |
1019 | ||
1020 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
1021 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
1022 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
1023 | show_sas_rphy_##name, NULL) | |
1024 | ||
1025 | #define sas_rphy_show_protocol(field, name) \ | |
1026 | static ssize_t \ | |
1027 | show_sas_rphy_##name(struct class_device *cdev, char *buf) \ | |
1028 | { \ | |
1029 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1030 | \ | |
1031 | if (!rphy->field) \ | |
1032 | return snprintf(buf, 20, "none\n"); \ | |
1033 | return get_sas_protocol_names(rphy->field, buf); \ | |
1034 | } | |
1035 | ||
1036 | #define sas_rphy_protocol_attr(field, name) \ | |
1037 | sas_rphy_show_protocol(field, name) \ | |
1038 | static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \ | |
1039 | show_sas_rphy_##name, NULL) | |
1040 | ||
1041 | static ssize_t | |
1042 | show_sas_rphy_device_type(struct class_device *cdev, char *buf) | |
1043 | { | |
1044 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
1045 | ||
1046 | if (!rphy->identify.device_type) | |
1047 | return snprintf(buf, 20, "none\n"); | |
1048 | return get_sas_device_type_names( | |
1049 | rphy->identify.device_type, buf); | |
1050 | } | |
1051 | ||
1052 | static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO, | |
1053 | show_sas_rphy_device_type, NULL); | |
1054 | ||
a0125641 CH |
1055 | static ssize_t |
1056 | show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf) | |
1057 | { | |
1058 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
1059 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
1060 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1061 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1062 | u64 identifier; | |
1063 | int error; | |
1064 | ||
1065 | /* | |
1066 | * Only devices behind an expander are supported, because the | |
1067 | * enclosure identifier is a SMP feature. | |
1068 | */ | |
f4ad7b58 | 1069 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1070 | return -EINVAL; |
1071 | ||
1072 | error = i->f->get_enclosure_identifier(rphy, &identifier); | |
1073 | if (error) | |
1074 | return error; | |
1075 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
1076 | } | |
1077 | ||
1078 | static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, | |
1079 | show_sas_rphy_enclosure_identifier, NULL); | |
1080 | ||
1081 | static ssize_t | |
1082 | show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf) | |
1083 | { | |
1084 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); | |
1085 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); | |
1086 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1087 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1088 | int val; | |
1089 | ||
f4ad7b58 | 1090 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1091 | return -EINVAL; |
1092 | ||
1093 | val = i->f->get_bay_identifier(rphy); | |
1094 | if (val < 0) | |
1095 | return val; | |
1096 | return sprintf(buf, "%d\n", val); | |
1097 | } | |
1098 | ||
1099 | static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, | |
1100 | show_sas_rphy_bay_identifier, NULL); | |
1101 | ||
c7ebbbce CH |
1102 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
1103 | initiator_port_protocols); | |
1104 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
1105 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
1106 | unsigned long long); | |
1107 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
1108 | ||
42ab0360 JB |
1109 | /* only need 8 bytes of data plus header (4 or 8) */ |
1110 | #define BUF_SIZE 64 | |
1111 | ||
1112 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1113 | { | |
1114 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
1115 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
1116 | struct sas_end_device *rdev; | |
1117 | struct scsi_mode_data mode_data; | |
1118 | int res, error; | |
1119 | ||
1120 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
1121 | ||
1122 | rdev = rphy_to_end_device(rphy); | |
1123 | ||
1124 | if (!buffer) | |
1125 | return -ENOMEM; | |
1126 | ||
1127 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1128 | &mode_data, NULL); | |
1129 | ||
1130 | error = -EINVAL; | |
1131 | if (!scsi_status_is_good(res)) | |
1132 | goto out; | |
1133 | ||
1134 | msdata = buffer + mode_data.header_length + | |
1135 | mode_data.block_descriptor_length; | |
1136 | ||
1137 | if (msdata - buffer > BUF_SIZE - 8) | |
1138 | goto out; | |
1139 | ||
1140 | error = 0; | |
1141 | ||
1142 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1143 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1144 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1145 | ||
1146 | out: | |
1147 | kfree(buffer); | |
1148 | return error; | |
1149 | } | |
1150 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1151 | ||
79cb1819 JB |
1152 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1153 | "sas_end_device", NULL, NULL, NULL); | |
1154 | ||
42ab0360 JB |
1155 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1156 | static ssize_t \ | |
1157 | show_sas_end_dev_##name(struct class_device *cdev, char *buf) \ | |
1158 | { \ | |
1159 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1160 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ | |
1161 | \ | |
1162 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1163 | } | |
1164 | ||
1165 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1166 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
1167 | static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ | |
1168 | show_sas_end_dev_##name, NULL) | |
1169 | ||
1170 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1171 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1172 | "%d\n", int); | |
1173 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1174 | "%d\n", int); | |
1175 | ||
79cb1819 JB |
1176 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1177 | "sas_expander", NULL, NULL, NULL); | |
1178 | ||
1179 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1180 | static ssize_t \ | |
1181 | show_sas_expander_##name(struct class_device *cdev, char *buf) \ | |
1182 | { \ | |
1183 | struct sas_rphy *rphy = transport_class_to_rphy(cdev); \ | |
1184 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ | |
1185 | \ | |
1186 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1187 | } | |
1188 | ||
1189 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1190 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
1191 | static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \ | |
1192 | show_sas_expander_##name, NULL) | |
1193 | ||
1194 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1195 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1196 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1197 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1198 | "%s\n", char *); | |
1199 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1200 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1201 | unsigned int); | |
1202 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1203 | |
c7ebbbce | 1204 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1205 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1206 | |
1207 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1208 | { | |
1209 | struct Scsi_Host *shost; | |
1210 | struct sas_internal *i; | |
1211 | ||
1212 | if (!scsi_is_sas_rphy(dev)) | |
1213 | return 0; | |
1214 | shost = dev_to_shost(dev->parent->parent); | |
1215 | ||
1216 | if (!shost->transportt) | |
1217 | return 0; | |
1218 | if (shost->transportt->host_attrs.ac.class != | |
1219 | &sas_host_class.class) | |
1220 | return 0; | |
1221 | ||
1222 | i = to_sas_internal(shost->transportt); | |
1223 | return &i->rphy_attr_cont.ac == cont; | |
1224 | } | |
1225 | ||
42ab0360 JB |
1226 | static int sas_end_dev_match(struct attribute_container *cont, |
1227 | struct device *dev) | |
1228 | { | |
1229 | struct Scsi_Host *shost; | |
1230 | struct sas_internal *i; | |
1231 | struct sas_rphy *rphy; | |
1232 | ||
1233 | if (!scsi_is_sas_rphy(dev)) | |
1234 | return 0; | |
1235 | shost = dev_to_shost(dev->parent->parent); | |
1236 | rphy = dev_to_rphy(dev); | |
1237 | ||
1238 | if (!shost->transportt) | |
1239 | return 0; | |
1240 | if (shost->transportt->host_attrs.ac.class != | |
1241 | &sas_host_class.class) | |
1242 | return 0; | |
1243 | ||
1244 | i = to_sas_internal(shost->transportt); | |
1245 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1246 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1247 | } |
1248 | ||
79cb1819 JB |
1249 | static int sas_expander_match(struct attribute_container *cont, |
1250 | struct device *dev) | |
1251 | { | |
1252 | struct Scsi_Host *shost; | |
1253 | struct sas_internal *i; | |
1254 | struct sas_rphy *rphy; | |
1255 | ||
1256 | if (!scsi_is_sas_rphy(dev)) | |
1257 | return 0; | |
1258 | shost = dev_to_shost(dev->parent->parent); | |
1259 | rphy = dev_to_rphy(dev); | |
1260 | ||
1261 | if (!shost->transportt) | |
1262 | return 0; | |
1263 | if (shost->transportt->host_attrs.ac.class != | |
1264 | &sas_host_class.class) | |
1265 | return 0; | |
1266 | ||
1267 | i = to_sas_internal(shost->transportt); | |
1268 | return &i->expander_attr_cont.ac == cont && | |
1269 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1270 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1271 | } |
1272 | ||
2f8600df | 1273 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1274 | { |
1275 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1276 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce CH |
1277 | |
1278 | put_device(dev->parent); | |
2f8600df | 1279 | kfree(edev); |
c7ebbbce CH |
1280 | } |
1281 | ||
2f8600df | 1282 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1283 | { |
2f8600df JB |
1284 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1285 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1286 | |
2f8600df JB |
1287 | put_device(dev->parent); |
1288 | kfree(edev); | |
c7ebbbce | 1289 | } |
c7ebbbce | 1290 | |
c5943d36 JB |
1291 | /** |
1292 | * sas_rphy_initialize - common rphy intialization | |
1293 | * @rphy: rphy to initialise | |
1294 | * | |
1295 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1296 | * initialise the common rphy component of each. | |
1297 | */ | |
1298 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1299 | { | |
1300 | INIT_LIST_HEAD(&rphy->list); | |
1301 | } | |
1302 | ||
42ab0360 JB |
1303 | /** |
1304 | * sas_end_device_alloc - allocate an rphy for an end device | |
1305 | * | |
1306 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1307 | * | |
1308 | * Returns: | |
1309 | * SAS PHY allocated or %NULL if the allocation failed. | |
1310 | */ | |
65c92b09 | 1311 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1312 | { |
1313 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1314 | struct sas_end_device *rdev; | |
1315 | ||
1316 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1317 | if (!rdev) { | |
42ab0360 JB |
1318 | return NULL; |
1319 | } | |
1320 | ||
1321 | device_initialize(&rdev->rphy.dev); | |
1322 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1323 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1324 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1325 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
1326 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d", | |
1327 | shost->host_no, rphy->scsi_target_id, parent->port_identifier); | |
1328 | } else | |
1329 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d", | |
1330 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1331 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1332 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1333 | transport_setup_device(&rdev->rphy.dev); |
1334 | ||
7aa68e80 FT |
1335 | if (sas_bsg_initialize(shost, &rdev->rphy, rdev->rphy.dev.bus_id)) |
1336 | printk("fail to a bsg device %s\n", rdev->rphy.dev.bus_id); | |
1337 | ||
42ab0360 JB |
1338 | return &rdev->rphy; |
1339 | } | |
1340 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1341 | ||
79cb1819 JB |
1342 | /** |
1343 | * sas_expander_alloc - allocate an rphy for an end device | |
1344 | * | |
1345 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1346 | * | |
1347 | * Returns: | |
1348 | * SAS PHY allocated or %NULL if the allocation failed. | |
1349 | */ | |
65c92b09 | 1350 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1351 | enum sas_device_type type) |
1352 | { | |
1353 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1354 | struct sas_expander_device *rdev; | |
1355 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1356 | ||
1357 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1358 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1359 | ||
1360 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1361 | if (!rdev) { | |
79cb1819 JB |
1362 | return NULL; |
1363 | } | |
1364 | ||
1365 | device_initialize(&rdev->rphy.dev); | |
1366 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1367 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1368 | mutex_lock(&sas_host->lock); |
1369 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1370 | mutex_unlock(&sas_host->lock); | |
1371 | sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d", | |
1372 | shost->host_no, rdev->rphy.scsi_target_id); | |
1373 | rdev->rphy.identify.device_type = type; | |
c5943d36 | 1374 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1375 | transport_setup_device(&rdev->rphy.dev); |
1376 | ||
7aa68e80 FT |
1377 | if (sas_bsg_initialize(shost, &rdev->rphy, rdev->rphy.dev.bus_id)) |
1378 | printk("fail to a bsg device %s\n", rdev->rphy.dev.bus_id); | |
1379 | ||
79cb1819 JB |
1380 | return &rdev->rphy; |
1381 | } | |
1382 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1383 | |
c7ebbbce | 1384 | /** |
1b3c3714 | 1385 | * sas_rphy_add -- add a SAS remote PHY to the device hierarchy |
c7ebbbce CH |
1386 | * @rphy: The remote PHY to be added |
1387 | * | |
1388 | * Publishes a SAS remote PHY to the rest of the system. | |
1389 | */ | |
1390 | int sas_rphy_add(struct sas_rphy *rphy) | |
1391 | { | |
65c92b09 | 1392 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1393 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1394 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1395 | struct sas_identify *identify = &rphy->identify; | |
1396 | int error; | |
1397 | ||
1398 | if (parent->rphy) | |
1399 | return -ENXIO; | |
1400 | parent->rphy = rphy; | |
1401 | ||
1402 | error = device_add(&rphy->dev); | |
1403 | if (error) | |
1404 | return error; | |
1405 | transport_add_device(&rphy->dev); | |
1406 | transport_configure_device(&rphy->dev); | |
1407 | ||
e02f3f59 | 1408 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1409 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1410 | if (identify->device_type == SAS_END_DEVICE && | |
1411 | (identify->target_port_protocols & | |
1412 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1413 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1414 | else if (identify->device_type == SAS_END_DEVICE) |
1415 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1416 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1417 | |
79cb1819 JB |
1418 | if (identify->device_type == SAS_END_DEVICE && |
1419 | rphy->scsi_target_id != -1) { | |
e8bf3941 | 1420 | scsi_scan_target(&rphy->dev, 0, |
c8490f3a | 1421 | rphy->scsi_target_id, SCAN_WILD_CARD, 0); |
c7ebbbce CH |
1422 | } |
1423 | ||
1424 | return 0; | |
1425 | } | |
1426 | EXPORT_SYMBOL(sas_rphy_add); | |
1427 | ||
1428 | /** | |
1429 | * sas_rphy_free -- free a SAS remote PHY | |
1430 | * @rphy SAS remote PHY to free | |
1431 | * | |
1432 | * Frees the specified SAS remote PHY. | |
1433 | * | |
1434 | * Note: | |
1435 | * This function must only be called on a remote | |
1436 | * PHY that has not sucessfully been added using | |
6f63caae | 1437 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
c7ebbbce CH |
1438 | */ |
1439 | void sas_rphy_free(struct sas_rphy *rphy) | |
1440 | { | |
92aab646 | 1441 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1442 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1443 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1444 | ||
e02f3f59 | 1445 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1446 | list_del(&rphy->list); |
e02f3f59 | 1447 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1448 | |
b6aff669 JB |
1449 | sas_bsg_remove(shost, rphy); |
1450 | ||
92aab646 | 1451 | transport_destroy_device(dev); |
2f8600df | 1452 | |
92aab646 | 1453 | put_device(dev); |
c7ebbbce CH |
1454 | } |
1455 | EXPORT_SYMBOL(sas_rphy_free); | |
1456 | ||
1457 | /** | |
6f63caae DW |
1458 | * sas_rphy_delete -- remove and free SAS remote PHY |
1459 | * @rphy: SAS remote PHY to remove and free | |
c7ebbbce | 1460 | * |
6f63caae | 1461 | * Removes the specified SAS remote PHY and frees it. |
c7ebbbce CH |
1462 | */ |
1463 | void | |
1464 | sas_rphy_delete(struct sas_rphy *rphy) | |
6f63caae DW |
1465 | { |
1466 | sas_rphy_remove(rphy); | |
1467 | sas_rphy_free(rphy); | |
1468 | } | |
1469 | EXPORT_SYMBOL(sas_rphy_delete); | |
1470 | ||
1471 | /** | |
1472 | * sas_rphy_remove -- remove SAS remote PHY | |
1473 | * @rphy: SAS remote phy to remove | |
1474 | * | |
1475 | * Removes the specified SAS remote PHY. | |
1476 | */ | |
1477 | void | |
1478 | sas_rphy_remove(struct sas_rphy *rphy) | |
c7ebbbce CH |
1479 | { |
1480 | struct device *dev = &rphy->dev; | |
65c92b09 | 1481 | struct sas_port *parent = dev_to_sas_port(dev->parent); |
c7ebbbce | 1482 | |
d4054239 CH |
1483 | switch (rphy->identify.device_type) { |
1484 | case SAS_END_DEVICE: | |
1485 | scsi_remove_target(dev); | |
1486 | break; | |
1487 | case SAS_EDGE_EXPANDER_DEVICE: | |
1488 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1489 | sas_remove_children(dev); |
d4054239 CH |
1490 | break; |
1491 | default: | |
1492 | break; | |
1493 | } | |
c7ebbbce | 1494 | |
fe8b2304 CH |
1495 | transport_remove_device(dev); |
1496 | device_del(dev); | |
c7ebbbce | 1497 | |
33b114e9 | 1498 | parent->rphy = NULL; |
c7ebbbce | 1499 | } |
6f63caae | 1500 | EXPORT_SYMBOL(sas_rphy_remove); |
c7ebbbce CH |
1501 | |
1502 | /** | |
1503 | * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY | |
1504 | * @dev: device to check | |
1505 | * | |
1506 | * Returns: | |
1507 | * %1 if the device represents a SAS remote PHY, %0 else | |
1508 | */ | |
1509 | int scsi_is_sas_rphy(const struct device *dev) | |
1510 | { | |
2f8600df JB |
1511 | return dev->release == sas_end_device_release || |
1512 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1513 | } |
1514 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1515 | ||
1516 | ||
1517 | /* | |
1518 | * SCSI scan helper | |
1519 | */ | |
1520 | ||
e02f3f59 CH |
1521 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
1522 | uint id, uint lun) | |
c7ebbbce CH |
1523 | { |
1524 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1525 | struct sas_rphy *rphy; | |
c7ebbbce | 1526 | |
e02f3f59 | 1527 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1528 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1529 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1530 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1531 | continue; |
1532 | ||
e8bf3941 | 1533 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1534 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
e8bf3941 | 1535 | scsi_scan_target(&rphy->dev, 0, |
e02f3f59 CH |
1536 | rphy->scsi_target_id, lun, 1); |
1537 | } | |
c7ebbbce | 1538 | } |
e02f3f59 | 1539 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1540 | |
e02f3f59 | 1541 | return 0; |
c7ebbbce CH |
1542 | } |
1543 | ||
1544 | ||
1545 | /* | |
1546 | * Setup / Teardown code | |
1547 | */ | |
1548 | ||
d24e1eeb | 1549 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
42ab0360 JB |
1550 | i->private_##attrb[count] = class_device_attr_##field; \ |
1551 | i->private_##attrb[count].attr.mode = perm; \ | |
42ab0360 JB |
1552 | i->attrb[count] = &i->private_##attrb[count]; \ |
1553 | if (test) \ | |
1554 | count++ | |
1555 | ||
d24e1eeb JB |
1556 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
1557 | i->private_##attrb[count] = class_device_attr_##field; \ | |
1558 | i->private_##attrb[count].attr.mode = perm; \ | |
1559 | if (ro_test) { \ | |
1560 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1561 | i->private_##attrb[count].store = NULL; \ | |
1562 | } \ | |
1563 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1564 | if (test) \ | |
1565 | count++ | |
42ab0360 JB |
1566 | |
1567 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1568 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1569 | |
dd9fbb52 | 1570 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1571 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1572 | |
65c92b09 | 1573 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1574 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1575 | |
d24e1eeb JB |
1576 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1577 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1578 | !i->f->set_phy_speed, S_IRUGO) | |
1579 | ||
acbf167d DW |
1580 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
1581 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1582 | !i->f->func, S_IRUGO) | |
1583 | ||
65c92b09 JB |
1584 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1585 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1586 | ||
1587 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1588 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1589 | |
65c92b09 | 1590 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
fe3b5bfe | 1591 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
07ba3a95 | 1592 | |
65c92b09 | 1593 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
fe3b5bfe | 1594 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
dd9fbb52 | 1595 | |
42ab0360 JB |
1596 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1597 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1598 | |
79cb1819 JB |
1599 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1600 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1601 | ||
c7ebbbce CH |
1602 | /** |
1603 | * sas_attach_transport -- instantiate SAS transport template | |
1604 | * @ft: SAS transport class function template | |
1605 | */ | |
1606 | struct scsi_transport_template * | |
1607 | sas_attach_transport(struct sas_function_template *ft) | |
1608 | { | |
1609 | struct sas_internal *i; | |
1610 | int count; | |
1611 | ||
24669f75 | 1612 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1613 | if (!i) |
1614 | return NULL; | |
c7ebbbce | 1615 | |
e02f3f59 | 1616 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1617 | |
1618 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1619 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1620 | i->t.host_attrs.ac.match = sas_host_match; | |
1621 | transport_container_register(&i->t.host_attrs); | |
1622 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1623 | ||
1624 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1625 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1626 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1627 | transport_container_register(&i->phy_attr_cont); | |
1628 | ||
65c92b09 JB |
1629 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1630 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1631 | i->port_attr_cont.ac.match = sas_port_match; | |
1632 | transport_container_register(&i->port_attr_cont); | |
1633 | ||
c7ebbbce CH |
1634 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1635 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1636 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1637 | transport_container_register(&i->rphy_attr_cont); | |
1638 | ||
42ab0360 JB |
1639 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1640 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1641 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1642 | transport_container_register(&i->end_dev_attr_cont); | |
1643 | ||
79cb1819 JB |
1644 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1645 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1646 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1647 | transport_container_register(&i->expander_attr_cont); | |
1648 | ||
c7ebbbce CH |
1649 | i->f = ft; |
1650 | ||
1651 | count = 0; | |
65c92b09 | 1652 | SETUP_PORT_ATTRIBUTE(num_phys); |
c7ebbbce CH |
1653 | i->host_attrs[count] = NULL; |
1654 | ||
1655 | count = 0; | |
65c92b09 JB |
1656 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1657 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1658 | SETUP_PHY_ATTRIBUTE(device_type); | |
1659 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1660 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1661 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1662 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1663 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1664 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1665 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1666 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1667 | |
1668 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1669 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1670 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1671 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1672 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1673 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1674 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1675 | i->phy_attrs[count] = NULL; |
1676 | ||
65c92b09 JB |
1677 | count = 0; |
1678 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1679 | i->port_attrs[count] = NULL; | |
1680 | ||
c7ebbbce CH |
1681 | count = 0; |
1682 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1683 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1684 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1685 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1686 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
dd9fbb52 JB |
1687 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1688 | get_enclosure_identifier); | |
1689 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1690 | get_bay_identifier); | |
c7ebbbce CH |
1691 | i->rphy_attrs[count] = NULL; |
1692 | ||
42ab0360 JB |
1693 | count = 0; |
1694 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1695 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1696 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
1697 | i->end_dev_attrs[count] = NULL; | |
1698 | ||
79cb1819 JB |
1699 | count = 0; |
1700 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1701 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1702 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1703 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1704 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1705 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1706 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1707 | i->expander_attrs[count] = NULL; | |
1708 | ||
c7ebbbce CH |
1709 | return &i->t; |
1710 | } | |
1711 | EXPORT_SYMBOL(sas_attach_transport); | |
1712 | ||
1713 | /** | |
1714 | * sas_release_transport -- release SAS transport template instance | |
1715 | * @t: transport template instance | |
1716 | */ | |
1717 | void sas_release_transport(struct scsi_transport_template *t) | |
1718 | { | |
1719 | struct sas_internal *i = to_sas_internal(t); | |
1720 | ||
1721 | transport_container_unregister(&i->t.host_attrs); | |
1722 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1723 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1724 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1725 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1726 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1727 | |
1728 | kfree(i); | |
1729 | } | |
1730 | EXPORT_SYMBOL(sas_release_transport); | |
1731 | ||
1732 | static __init int sas_transport_init(void) | |
1733 | { | |
1734 | int error; | |
1735 | ||
1736 | error = transport_class_register(&sas_host_class); | |
1737 | if (error) | |
1738 | goto out; | |
1739 | error = transport_class_register(&sas_phy_class); | |
1740 | if (error) | |
1741 | goto out_unregister_transport; | |
65c92b09 | 1742 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1743 | if (error) |
1744 | goto out_unregister_phy; | |
65c92b09 JB |
1745 | error = transport_class_register(&sas_rphy_class); |
1746 | if (error) | |
1747 | goto out_unregister_port; | |
42ab0360 JB |
1748 | error = transport_class_register(&sas_end_dev_class); |
1749 | if (error) | |
1750 | goto out_unregister_rphy; | |
79cb1819 JB |
1751 | error = transport_class_register(&sas_expander_class); |
1752 | if (error) | |
1753 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1754 | |
1755 | return 0; | |
1756 | ||
79cb1819 JB |
1757 | out_unregister_end_dev: |
1758 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1759 | out_unregister_rphy: |
1760 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1761 | out_unregister_port: |
1762 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1763 | out_unregister_phy: |
1764 | transport_class_unregister(&sas_phy_class); | |
1765 | out_unregister_transport: | |
1766 | transport_class_unregister(&sas_host_class); | |
1767 | out: | |
1768 | return error; | |
1769 | ||
1770 | } | |
1771 | ||
1772 | static void __exit sas_transport_exit(void) | |
1773 | { | |
1774 | transport_class_unregister(&sas_host_class); | |
1775 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1776 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1777 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1778 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1779 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1780 | } |
1781 | ||
1782 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1783 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
1784 | MODULE_LICENSE("GPL"); |
1785 | ||
1786 | module_init(sas_transport_init); | |
1787 | module_exit(sas_transport_exit); |