Commit | Line | Data |
---|---|---|
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, | |
b1c11812 | 9 | * and various sysfs attributes to expose these topologies and management |
c7ebbbce CH |
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 | */ | |
ee959b00 TJ |
56 | #define SAS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
57 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
c7ebbbce CH |
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 | ||
93c20a59 FT |
195 | static void sas_host_release(struct device *dev) |
196 | { | |
197 | struct Scsi_Host *shost = dev_to_shost(dev); | |
198 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
199 | struct request_queue *q = sas_host->q; | |
200 | ||
201 | if (q) | |
202 | blk_cleanup_queue(q); | |
203 | } | |
204 | ||
39dca558 | 205 | static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) |
7aa68e80 FT |
206 | { |
207 | struct request_queue *q; | |
208 | int error; | |
39dca558 JB |
209 | struct device *dev; |
210 | char namebuf[BUS_ID_SIZE]; | |
211 | const char *name; | |
93c20a59 | 212 | void (*release)(struct device *); |
7aa68e80 FT |
213 | |
214 | if (!to_sas_internal(shost->transportt)->f->smp_handler) { | |
215 | printk("%s can't handle SMP requests\n", shost->hostt->name); | |
216 | return 0; | |
217 | } | |
218 | ||
39dca558 | 219 | if (rphy) { |
7aa68e80 | 220 | q = blk_init_queue(sas_non_host_smp_request, NULL); |
39dca558 JB |
221 | dev = &rphy->dev; |
222 | name = dev->bus_id; | |
93c20a59 | 223 | release = NULL; |
39dca558 | 224 | } else { |
7aa68e80 | 225 | q = blk_init_queue(sas_host_smp_request, NULL); |
39dca558 JB |
226 | dev = &shost->shost_gendev; |
227 | snprintf(namebuf, sizeof(namebuf), | |
228 | "sas_host%d", shost->host_no); | |
229 | name = namebuf; | |
93c20a59 | 230 | release = sas_host_release; |
39dca558 | 231 | } |
7aa68e80 FT |
232 | if (!q) |
233 | return -ENOMEM; | |
234 | ||
93c20a59 | 235 | error = bsg_register_queue(q, dev, name, release); |
7aa68e80 FT |
236 | if (error) { |
237 | blk_cleanup_queue(q); | |
238 | return -ENOMEM; | |
239 | } | |
240 | ||
b6aff669 JB |
241 | if (rphy) |
242 | rphy->q = q; | |
243 | else | |
244 | to_sas_host_attrs(shost)->q = q; | |
245 | ||
7aa68e80 FT |
246 | if (rphy) |
247 | q->queuedata = rphy; | |
248 | else | |
249 | q->queuedata = shost; | |
250 | ||
75ad23bc | 251 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); |
7aa68e80 FT |
252 | return 0; |
253 | } | |
254 | ||
b6aff669 JB |
255 | static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy) |
256 | { | |
257 | struct request_queue *q; | |
258 | ||
259 | if (rphy) | |
260 | q = rphy->q; | |
261 | else | |
262 | q = to_sas_host_attrs(shost)->q; | |
263 | ||
264 | if (!q) | |
265 | return; | |
266 | ||
267 | bsg_unregister_queue(q); | |
b6aff669 JB |
268 | } |
269 | ||
c7ebbbce CH |
270 | /* |
271 | * SAS host attributes | |
272 | */ | |
273 | ||
37be6eeb | 274 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 275 | struct device *cdev) |
c7ebbbce CH |
276 | { |
277 | struct Scsi_Host *shost = dev_to_shost(dev); | |
278 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
279 | ||
280 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 281 | mutex_init(&sas_host->lock); |
c7ebbbce | 282 | sas_host->next_target_id = 0; |
79cb1819 | 283 | sas_host->next_expander_id = 0; |
c9fefeb2 | 284 | sas_host->next_port_id = 0; |
7aa68e80 | 285 | |
39dca558 | 286 | if (sas_bsg_initialize(shost, NULL)) |
7aa68e80 FT |
287 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", |
288 | shost->host_no); | |
289 | ||
c7ebbbce CH |
290 | return 0; |
291 | } | |
292 | ||
b6aff669 | 293 | static int sas_host_remove(struct transport_container *tc, struct device *dev, |
ee959b00 | 294 | struct device *cdev) |
b6aff669 JB |
295 | { |
296 | struct Scsi_Host *shost = dev_to_shost(dev); | |
297 | ||
298 | sas_bsg_remove(shost, NULL); | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
c7ebbbce | 303 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
b6aff669 | 304 | "sas_host", sas_host_setup, sas_host_remove, NULL); |
c7ebbbce CH |
305 | |
306 | static int sas_host_match(struct attribute_container *cont, | |
307 | struct device *dev) | |
308 | { | |
309 | struct Scsi_Host *shost; | |
310 | struct sas_internal *i; | |
311 | ||
312 | if (!scsi_is_host_device(dev)) | |
313 | return 0; | |
314 | shost = dev_to_shost(dev); | |
315 | ||
316 | if (!shost->transportt) | |
317 | return 0; | |
318 | if (shost->transportt->host_attrs.ac.class != | |
319 | &sas_host_class.class) | |
320 | return 0; | |
321 | ||
322 | i = to_sas_internal(shost->transportt); | |
323 | return &i->t.host_attrs.ac == cont; | |
324 | } | |
325 | ||
326 | static int do_sas_phy_delete(struct device *dev, void *data) | |
327 | { | |
65c92b09 JB |
328 | int pass = (int)(unsigned long)data; |
329 | ||
330 | if (pass == 0 && scsi_is_sas_port(dev)) | |
331 | sas_port_delete(dev_to_sas_port(dev)); | |
332 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
333 | sas_phy_delete(dev_to_phy(dev)); |
334 | return 0; | |
335 | } | |
336 | ||
65c92b09 | 337 | /** |
eb44820c | 338 | * sas_remove_children - tear down a devices SAS data structures |
65c92b09 JB |
339 | * @dev: device belonging to the sas object |
340 | * | |
341 | * Removes all SAS PHYs and remote PHYs for a given object | |
342 | */ | |
343 | void sas_remove_children(struct device *dev) | |
344 | { | |
345 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
346 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
347 | } | |
348 | EXPORT_SYMBOL(sas_remove_children); | |
349 | ||
c7ebbbce | 350 | /** |
eb44820c | 351 | * sas_remove_host - tear down a Scsi_Host's SAS data structures |
c7ebbbce CH |
352 | * @shost: Scsi Host that is torn down |
353 | * | |
354 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. | |
355 | * Must be called just before scsi_remove_host for SAS HBAs. | |
356 | */ | |
357 | void sas_remove_host(struct Scsi_Host *shost) | |
358 | { | |
65c92b09 | 359 | sas_remove_children(&shost->shost_gendev); |
c7ebbbce CH |
360 | } |
361 | EXPORT_SYMBOL(sas_remove_host); | |
362 | ||
363 | ||
364 | /* | |
65c92b09 | 365 | * SAS Phy attributes |
c7ebbbce CH |
366 | */ |
367 | ||
368 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
369 | static ssize_t \ | |
ee959b00 TJ |
370 | show_sas_phy_##name(struct device *dev, \ |
371 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 372 | { \ |
ee959b00 | 373 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
374 | \ |
375 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
376 | } | |
377 | ||
378 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
379 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 380 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
381 | |
382 | #define sas_phy_show_protocol(field, name) \ | |
383 | static ssize_t \ | |
ee959b00 TJ |
384 | show_sas_phy_##name(struct device *dev, \ |
385 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 386 | { \ |
ee959b00 | 387 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
388 | \ |
389 | if (!phy->field) \ | |
390 | return snprintf(buf, 20, "none\n"); \ | |
391 | return get_sas_protocol_names(phy->field, buf); \ | |
392 | } | |
393 | ||
394 | #define sas_phy_protocol_attr(field, name) \ | |
395 | sas_phy_show_protocol(field, name) \ | |
ee959b00 | 396 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
397 | |
398 | #define sas_phy_show_linkspeed(field) \ | |
399 | static ssize_t \ | |
ee959b00 TJ |
400 | show_sas_phy_##field(struct device *dev, \ |
401 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 402 | { \ |
ee959b00 | 403 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
404 | \ |
405 | return get_sas_linkspeed_names(phy->field, buf); \ | |
406 | } | |
407 | ||
d24e1eeb JB |
408 | /* Fudge to tell if we're minimum or maximum */ |
409 | #define sas_phy_store_linkspeed(field) \ | |
410 | static ssize_t \ | |
ee959b00 TJ |
411 | store_sas_phy_##field(struct device *dev, \ |
412 | struct device_attribute *attr, \ | |
413 | const char *buf, size_t count) \ | |
d24e1eeb | 414 | { \ |
ee959b00 | 415 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
d24e1eeb JB |
416 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
417 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
418 | u32 value; \ | |
419 | struct sas_phy_linkrates rates = {0}; \ | |
420 | int error; \ | |
421 | \ | |
422 | error = set_sas_linkspeed_names(&value, buf); \ | |
423 | if (error) \ | |
424 | return error; \ | |
425 | rates.field = value; \ | |
426 | error = i->f->set_phy_speed(phy, &rates); \ | |
427 | \ | |
428 | return error ? error : count; \ | |
429 | } | |
430 | ||
431 | #define sas_phy_linkspeed_rw_attr(field) \ | |
432 | sas_phy_show_linkspeed(field) \ | |
433 | sas_phy_store_linkspeed(field) \ | |
ee959b00 | 434 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ |
d24e1eeb JB |
435 | store_sas_phy_##field) |
436 | ||
c7ebbbce CH |
437 | #define sas_phy_linkspeed_attr(field) \ |
438 | sas_phy_show_linkspeed(field) \ | |
ee959b00 | 439 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c7ebbbce | 440 | |
d24e1eeb | 441 | |
c3ee74c4 CH |
442 | #define sas_phy_show_linkerror(field) \ |
443 | static ssize_t \ | |
ee959b00 TJ |
444 | show_sas_phy_##field(struct device *dev, \ |
445 | struct device_attribute *attr, char *buf) \ | |
c3ee74c4 | 446 | { \ |
ee959b00 | 447 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c3ee74c4 CH |
448 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
449 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
450 | int error; \ | |
451 | \ | |
dd9fbb52 | 452 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
453 | if (error) \ |
454 | return error; \ | |
455 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
456 | } | |
457 | ||
458 | #define sas_phy_linkerror_attr(field) \ | |
459 | sas_phy_show_linkerror(field) \ | |
ee959b00 | 460 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c3ee74c4 CH |
461 | |
462 | ||
c7ebbbce | 463 | static ssize_t |
ee959b00 TJ |
464 | show_sas_device_type(struct device *dev, |
465 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 466 | { |
ee959b00 | 467 | struct sas_phy *phy = transport_class_to_phy(dev); |
c7ebbbce CH |
468 | |
469 | if (!phy->identify.device_type) | |
470 | return snprintf(buf, 20, "none\n"); | |
471 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
472 | } | |
ee959b00 | 473 | static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
c7ebbbce | 474 | |
ee959b00 | 475 | static ssize_t do_sas_phy_enable(struct device *dev, |
acbf167d DW |
476 | size_t count, int enable) |
477 | { | |
ee959b00 | 478 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
479 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
480 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
481 | int error; | |
482 | ||
483 | error = i->f->phy_enable(phy, enable); | |
484 | if (error) | |
485 | return error; | |
486 | phy->enabled = enable; | |
487 | return count; | |
488 | }; | |
489 | ||
ee959b00 TJ |
490 | static ssize_t |
491 | store_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
492 | const char *buf, size_t count) | |
acbf167d DW |
493 | { |
494 | if (count < 1) | |
495 | return -EINVAL; | |
496 | ||
497 | switch (buf[0]) { | |
498 | case '0': | |
ee959b00 | 499 | do_sas_phy_enable(dev, count, 0); |
acbf167d DW |
500 | break; |
501 | case '1': | |
ee959b00 | 502 | do_sas_phy_enable(dev, count, 1); |
acbf167d DW |
503 | break; |
504 | default: | |
505 | return -EINVAL; | |
506 | } | |
507 | ||
508 | return count; | |
509 | } | |
510 | ||
ee959b00 TJ |
511 | static ssize_t |
512 | show_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
513 | char *buf) | |
acbf167d | 514 | { |
ee959b00 | 515 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
516 | |
517 | return snprintf(buf, 20, "%d", phy->enabled); | |
518 | } | |
519 | ||
ee959b00 | 520 | static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, |
acbf167d DW |
521 | store_sas_phy_enable); |
522 | ||
ee959b00 TJ |
523 | static ssize_t |
524 | do_sas_phy_reset(struct device *dev, size_t count, int hard_reset) | |
07ba3a95 | 525 | { |
ee959b00 | 526 | struct sas_phy *phy = transport_class_to_phy(dev); |
07ba3a95 CH |
527 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
528 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
529 | int error; | |
530 | ||
07ba3a95 CH |
531 | error = i->f->phy_reset(phy, hard_reset); |
532 | if (error) | |
533 | return error; | |
534 | return count; | |
535 | }; | |
536 | ||
ee959b00 TJ |
537 | static ssize_t |
538 | store_sas_link_reset(struct device *dev, struct device_attribute *attr, | |
539 | const char *buf, size_t count) | |
07ba3a95 | 540 | { |
ee959b00 | 541 | return do_sas_phy_reset(dev, count, 0); |
07ba3a95 | 542 | } |
ee959b00 | 543 | static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); |
07ba3a95 | 544 | |
ee959b00 TJ |
545 | static ssize_t |
546 | store_sas_hard_reset(struct device *dev, struct device_attribute *attr, | |
547 | const char *buf, size_t count) | |
07ba3a95 | 548 | { |
ee959b00 | 549 | return do_sas_phy_reset(dev, count, 1); |
07ba3a95 | 550 | } |
ee959b00 | 551 | static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); |
07ba3a95 | 552 | |
c7ebbbce CH |
553 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
554 | initiator_port_protocols); | |
555 | sas_phy_protocol_attr(identify.target_port_protocols, | |
556 | target_port_protocols); | |
557 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
558 | unsigned long long); | |
559 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 560 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
561 | sas_phy_linkspeed_attr(negotiated_linkrate); |
562 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 563 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 564 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 565 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
566 | sas_phy_linkerror_attr(invalid_dword_count); |
567 | sas_phy_linkerror_attr(running_disparity_error_count); | |
568 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
569 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce CH |
570 | |
571 | ||
572 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
573 | "sas_phy", NULL, NULL, NULL); | |
574 | ||
575 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
576 | { | |
577 | struct Scsi_Host *shost; | |
578 | struct sas_internal *i; | |
579 | ||
580 | if (!scsi_is_sas_phy(dev)) | |
581 | return 0; | |
582 | shost = dev_to_shost(dev->parent); | |
583 | ||
584 | if (!shost->transportt) | |
585 | return 0; | |
586 | if (shost->transportt->host_attrs.ac.class != | |
587 | &sas_host_class.class) | |
588 | return 0; | |
589 | ||
590 | i = to_sas_internal(shost->transportt); | |
591 | return &i->phy_attr_cont.ac == cont; | |
592 | } | |
593 | ||
594 | static void sas_phy_release(struct device *dev) | |
595 | { | |
596 | struct sas_phy *phy = dev_to_phy(dev); | |
597 | ||
598 | put_device(dev->parent); | |
599 | kfree(phy); | |
600 | } | |
601 | ||
602 | /** | |
eb44820c | 603 | * sas_phy_alloc - allocates and initialize a SAS PHY structure |
c7ebbbce | 604 | * @parent: Parent device |
d99ca418 | 605 | * @number: Phy index |
c7ebbbce CH |
606 | * |
607 | * Allocates an SAS PHY structure. It will be added in the device tree | |
608 | * below the device specified by @parent, which has to be either a Scsi_Host | |
609 | * or sas_rphy. | |
610 | * | |
611 | * Returns: | |
612 | * SAS PHY allocated or %NULL if the allocation failed. | |
613 | */ | |
614 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
615 | { | |
616 | struct Scsi_Host *shost = dev_to_shost(parent); | |
617 | struct sas_phy *phy; | |
618 | ||
24669f75 | 619 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
620 | if (!phy) |
621 | return NULL; | |
c7ebbbce | 622 | |
c7ebbbce | 623 | phy->number = number; |
acbf167d | 624 | phy->enabled = 1; |
c7ebbbce CH |
625 | |
626 | device_initialize(&phy->dev); | |
627 | phy->dev.parent = get_device(parent); | |
628 | phy->dev.release = sas_phy_release; | |
65c92b09 | 629 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
630 | if (scsi_is_sas_expander_device(parent)) { |
631 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
65c92b09 | 632 | sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
633 | rphy->scsi_target_id, number); |
634 | } else | |
635 | sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number); | |
c7ebbbce CH |
636 | |
637 | transport_setup_device(&phy->dev); | |
638 | ||
639 | return phy; | |
640 | } | |
641 | EXPORT_SYMBOL(sas_phy_alloc); | |
642 | ||
643 | /** | |
eb44820c | 644 | * sas_phy_add - add a SAS PHY to the device hierarchy |
c7ebbbce CH |
645 | * @phy: The PHY to be added |
646 | * | |
647 | * Publishes a SAS PHY to the rest of the system. | |
648 | */ | |
649 | int sas_phy_add(struct sas_phy *phy) | |
650 | { | |
651 | int error; | |
652 | ||
653 | error = device_add(&phy->dev); | |
654 | if (!error) { | |
655 | transport_add_device(&phy->dev); | |
656 | transport_configure_device(&phy->dev); | |
657 | } | |
658 | ||
659 | return error; | |
660 | } | |
661 | EXPORT_SYMBOL(sas_phy_add); | |
662 | ||
663 | /** | |
eb44820c | 664 | * sas_phy_free - free a SAS PHY |
c7ebbbce CH |
665 | * @phy: SAS PHY to free |
666 | * | |
667 | * Frees the specified SAS PHY. | |
668 | * | |
669 | * Note: | |
670 | * This function must only be called on a PHY that has not | |
671 | * sucessfully been added using sas_phy_add(). | |
672 | */ | |
673 | void sas_phy_free(struct sas_phy *phy) | |
674 | { | |
675 | transport_destroy_device(&phy->dev); | |
92aab646 | 676 | put_device(&phy->dev); |
c7ebbbce CH |
677 | } |
678 | EXPORT_SYMBOL(sas_phy_free); | |
679 | ||
680 | /** | |
eb44820c | 681 | * sas_phy_delete - remove SAS PHY |
c7ebbbce CH |
682 | * @phy: SAS PHY to remove |
683 | * | |
684 | * Removes the specified SAS PHY. If the SAS PHY has an | |
685 | * associated remote PHY it is removed before. | |
686 | */ | |
687 | void | |
688 | sas_phy_delete(struct sas_phy *phy) | |
689 | { | |
690 | struct device *dev = &phy->dev; | |
691 | ||
65c92b09 JB |
692 | /* this happens if the phy is still part of a port when deleted */ |
693 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
694 | |
695 | transport_remove_device(dev); | |
696 | device_del(dev); | |
697 | transport_destroy_device(dev); | |
92aab646 | 698 | put_device(dev); |
c7ebbbce CH |
699 | } |
700 | EXPORT_SYMBOL(sas_phy_delete); | |
701 | ||
702 | /** | |
eb44820c | 703 | * scsi_is_sas_phy - check if a struct device represents a SAS PHY |
c7ebbbce CH |
704 | * @dev: device to check |
705 | * | |
706 | * Returns: | |
707 | * %1 if the device represents a SAS PHY, %0 else | |
708 | */ | |
709 | int scsi_is_sas_phy(const struct device *dev) | |
710 | { | |
711 | return dev->release == sas_phy_release; | |
712 | } | |
713 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
714 | ||
65c92b09 JB |
715 | /* |
716 | * SAS Port attributes | |
717 | */ | |
718 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
719 | static ssize_t \ | |
ee959b00 TJ |
720 | show_sas_port_##name(struct device *dev, \ |
721 | struct device_attribute *attr, char *buf) \ | |
65c92b09 | 722 | { \ |
ee959b00 | 723 | struct sas_port *port = transport_class_to_sas_port(dev); \ |
65c92b09 JB |
724 | \ |
725 | return snprintf(buf, 20, format_string, cast port->field); \ | |
726 | } | |
727 | ||
728 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
729 | sas_port_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 730 | static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) |
65c92b09 JB |
731 | |
732 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
733 | ||
734 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
735 | "sas_port", NULL, NULL, NULL); | |
736 | ||
737 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
738 | { | |
739 | struct Scsi_Host *shost; | |
740 | struct sas_internal *i; | |
741 | ||
742 | if (!scsi_is_sas_port(dev)) | |
743 | return 0; | |
744 | shost = dev_to_shost(dev->parent); | |
745 | ||
746 | if (!shost->transportt) | |
747 | return 0; | |
748 | if (shost->transportt->host_attrs.ac.class != | |
749 | &sas_host_class.class) | |
750 | return 0; | |
751 | ||
752 | i = to_sas_internal(shost->transportt); | |
753 | return &i->port_attr_cont.ac == cont; | |
754 | } | |
755 | ||
756 | ||
757 | static void sas_port_release(struct device *dev) | |
758 | { | |
759 | struct sas_port *port = dev_to_sas_port(dev); | |
760 | ||
761 | BUG_ON(!list_empty(&port->phy_list)); | |
762 | ||
763 | put_device(dev->parent); | |
764 | kfree(port); | |
765 | } | |
766 | ||
767 | static void sas_port_create_link(struct sas_port *port, | |
768 | struct sas_phy *phy) | |
769 | { | |
21434966 DW |
770 | int res; |
771 | ||
772 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
773 | phy->dev.bus_id); | |
774 | if (res) | |
775 | goto err; | |
776 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
777 | if (res) | |
778 | goto err; | |
779 | return; | |
780 | err: | |
781 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
782 | __FUNCTION__, res); | |
65c92b09 JB |
783 | } |
784 | ||
785 | static void sas_port_delete_link(struct sas_port *port, | |
786 | struct sas_phy *phy) | |
787 | { | |
788 | sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id); | |
789 | sysfs_remove_link(&phy->dev.kobj, "port"); | |
790 | } | |
791 | ||
792 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
793 | * | |
794 | * @parent: parent device | |
795 | * @port_id: port number | |
796 | * | |
797 | * Allocates a SAS port structure. It will be added to the device tree | |
798 | * below the device specified by @parent which must be either a Scsi_Host | |
799 | * or a sas_expander_device. | |
800 | * | |
801 | * Returns %NULL on error | |
802 | */ | |
803 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
804 | { | |
805 | struct Scsi_Host *shost = dev_to_shost(parent); | |
806 | struct sas_port *port; | |
807 | ||
808 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
809 | if (!port) | |
810 | return NULL; | |
811 | ||
812 | port->port_identifier = port_id; | |
813 | ||
814 | device_initialize(&port->dev); | |
815 | ||
816 | port->dev.parent = get_device(parent); | |
817 | port->dev.release = sas_port_release; | |
818 | ||
819 | mutex_init(&port->phy_list_mutex); | |
820 | INIT_LIST_HEAD(&port->phy_list); | |
821 | ||
822 | if (scsi_is_sas_expander_device(parent)) { | |
823 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
824 | sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no, | |
825 | rphy->scsi_target_id, port->port_identifier); | |
826 | } else | |
827 | sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no, | |
828 | port->port_identifier); | |
829 | ||
830 | transport_setup_device(&port->dev); | |
831 | ||
832 | return port; | |
833 | } | |
834 | EXPORT_SYMBOL(sas_port_alloc); | |
835 | ||
c9fefeb2 JB |
836 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
837 | * | |
838 | * @parent: parent device | |
839 | * | |
840 | * Allocates a SAS port structure and a number to go with it. This | |
841 | * interface is really for adapters where the port number has no | |
842 | * meansing, so the sas class should manage them. It will be added to | |
843 | * the device tree below the device specified by @parent which must be | |
844 | * either a Scsi_Host or a sas_expander_device. | |
845 | * | |
846 | * Returns %NULL on error | |
847 | */ | |
848 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
849 | { | |
850 | int index; | |
851 | struct Scsi_Host *shost = dev_to_shost(parent); | |
852 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
853 | ||
854 | /* FIXME: use idr for this eventually */ | |
855 | mutex_lock(&sas_host->lock); | |
856 | if (scsi_is_sas_expander_device(parent)) { | |
857 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
858 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
859 | ||
860 | index = exp->next_port_id++; | |
861 | } else | |
862 | index = sas_host->next_port_id++; | |
863 | mutex_unlock(&sas_host->lock); | |
864 | return sas_port_alloc(parent, index); | |
865 | } | |
866 | EXPORT_SYMBOL(sas_port_alloc_num); | |
867 | ||
65c92b09 JB |
868 | /** |
869 | * sas_port_add - add a SAS port to the device hierarchy | |
65c92b09 JB |
870 | * @port: port to be added |
871 | * | |
872 | * publishes a port to the rest of the system | |
873 | */ | |
874 | int sas_port_add(struct sas_port *port) | |
875 | { | |
876 | int error; | |
877 | ||
878 | /* No phys should be added until this is made visible */ | |
879 | BUG_ON(!list_empty(&port->phy_list)); | |
880 | ||
881 | error = device_add(&port->dev); | |
882 | ||
883 | if (error) | |
884 | return error; | |
885 | ||
886 | transport_add_device(&port->dev); | |
887 | transport_configure_device(&port->dev); | |
888 | ||
889 | return 0; | |
890 | } | |
891 | EXPORT_SYMBOL(sas_port_add); | |
892 | ||
893 | /** | |
eb44820c | 894 | * sas_port_free - free a SAS PORT |
65c92b09 JB |
895 | * @port: SAS PORT to free |
896 | * | |
897 | * Frees the specified SAS PORT. | |
898 | * | |
899 | * Note: | |
900 | * This function must only be called on a PORT that has not | |
901 | * sucessfully been added using sas_port_add(). | |
902 | */ | |
903 | void sas_port_free(struct sas_port *port) | |
904 | { | |
905 | transport_destroy_device(&port->dev); | |
906 | put_device(&port->dev); | |
907 | } | |
908 | EXPORT_SYMBOL(sas_port_free); | |
909 | ||
910 | /** | |
eb44820c | 911 | * sas_port_delete - remove SAS PORT |
65c92b09 JB |
912 | * @port: SAS PORT to remove |
913 | * | |
914 | * Removes the specified SAS PORT. If the SAS PORT has an | |
915 | * associated phys, unlink them from the port as well. | |
916 | */ | |
917 | void sas_port_delete(struct sas_port *port) | |
918 | { | |
919 | struct device *dev = &port->dev; | |
920 | struct sas_phy *phy, *tmp_phy; | |
921 | ||
922 | if (port->rphy) { | |
923 | sas_rphy_delete(port->rphy); | |
924 | port->rphy = NULL; | |
925 | } | |
926 | ||
927 | mutex_lock(&port->phy_list_mutex); | |
928 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
929 | port_siblings) { | |
930 | sas_port_delete_link(port, phy); | |
931 | list_del_init(&phy->port_siblings); | |
932 | } | |
933 | mutex_unlock(&port->phy_list_mutex); | |
934 | ||
a0e1b6ef JB |
935 | if (port->is_backlink) { |
936 | struct device *parent = port->dev.parent; | |
937 | ||
938 | sysfs_remove_link(&port->dev.kobj, parent->bus_id); | |
939 | port->is_backlink = 0; | |
940 | } | |
941 | ||
65c92b09 JB |
942 | transport_remove_device(dev); |
943 | device_del(dev); | |
944 | transport_destroy_device(dev); | |
945 | put_device(dev); | |
946 | } | |
947 | EXPORT_SYMBOL(sas_port_delete); | |
948 | ||
949 | /** | |
eb44820c | 950 | * scsi_is_sas_port - check if a struct device represents a SAS port |
65c92b09 JB |
951 | * @dev: device to check |
952 | * | |
953 | * Returns: | |
954 | * %1 if the device represents a SAS Port, %0 else | |
955 | */ | |
956 | int scsi_is_sas_port(const struct device *dev) | |
957 | { | |
958 | return dev->release == sas_port_release; | |
959 | } | |
960 | EXPORT_SYMBOL(scsi_is_sas_port); | |
961 | ||
962 | /** | |
963 | * sas_port_add_phy - add another phy to a port to form a wide port | |
964 | * @port: port to add the phy to | |
965 | * @phy: phy to add | |
966 | * | |
967 | * When a port is initially created, it is empty (has no phys). All | |
968 | * ports must have at least one phy to operated, and all wide ports | |
969 | * must have at least two. The current code makes no difference | |
970 | * between ports and wide ports, but the only object that can be | |
971 | * connected to a remote device is a port, so ports must be formed on | |
972 | * all devices with phys if they're connected to anything. | |
973 | */ | |
974 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
975 | { | |
976 | mutex_lock(&port->phy_list_mutex); | |
977 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
978 | /* make sure we're already on this port */ | |
979 | struct sas_phy *tmp; | |
980 | ||
981 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
982 | if (tmp == phy) | |
983 | break; | |
984 | /* If this trips, you added a phy that was already | |
985 | * part of a different port */ | |
986 | if (unlikely(tmp != phy)) { | |
987 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id); | |
988 | BUG(); | |
989 | } | |
990 | } else { | |
991 | sas_port_create_link(port, phy); | |
992 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
993 | port->num_phys++; | |
994 | } | |
995 | mutex_unlock(&port->phy_list_mutex); | |
996 | } | |
997 | EXPORT_SYMBOL(sas_port_add_phy); | |
998 | ||
999 | /** | |
1000 | * sas_port_delete_phy - remove a phy from a port or wide port | |
1001 | * @port: port to remove the phy from | |
1002 | * @phy: phy to remove | |
1003 | * | |
1004 | * This operation is used for tearing down ports again. It must be | |
1005 | * done to every port or wide port before calling sas_port_delete. | |
1006 | */ | |
1007 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
1008 | { | |
1009 | mutex_lock(&port->phy_list_mutex); | |
1010 | sas_port_delete_link(port, phy); | |
1011 | list_del_init(&phy->port_siblings); | |
1012 | port->num_phys--; | |
1013 | mutex_unlock(&port->phy_list_mutex); | |
1014 | } | |
1015 | EXPORT_SYMBOL(sas_port_delete_phy); | |
1016 | ||
a0e1b6ef JB |
1017 | void sas_port_mark_backlink(struct sas_port *port) |
1018 | { | |
21434966 | 1019 | int res; |
a0e1b6ef JB |
1020 | struct device *parent = port->dev.parent->parent->parent; |
1021 | ||
1022 | if (port->is_backlink) | |
1023 | return; | |
1024 | port->is_backlink = 1; | |
21434966 DW |
1025 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
1026 | parent->bus_id); | |
1027 | if (res) | |
1028 | goto err; | |
1029 | return; | |
1030 | err: | |
1031 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
1032 | __FUNCTION__, res); | |
a0e1b6ef JB |
1033 | |
1034 | } | |
1035 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
1036 | ||
c7ebbbce CH |
1037 | /* |
1038 | * SAS remote PHY attributes. | |
1039 | */ | |
1040 | ||
1041 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
1042 | static ssize_t \ | |
ee959b00 TJ |
1043 | show_sas_rphy_##name(struct device *dev, \ |
1044 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1045 | { \ |
ee959b00 | 1046 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1047 | \ |
1048 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
1049 | } | |
1050 | ||
1051 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
1052 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1053 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1054 | show_sas_rphy_##name, NULL) |
1055 | ||
1056 | #define sas_rphy_show_protocol(field, name) \ | |
1057 | static ssize_t \ | |
ee959b00 TJ |
1058 | show_sas_rphy_##name(struct device *dev, \ |
1059 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1060 | { \ |
ee959b00 | 1061 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1062 | \ |
1063 | if (!rphy->field) \ | |
1064 | return snprintf(buf, 20, "none\n"); \ | |
1065 | return get_sas_protocol_names(rphy->field, buf); \ | |
1066 | } | |
1067 | ||
1068 | #define sas_rphy_protocol_attr(field, name) \ | |
1069 | sas_rphy_show_protocol(field, name) \ | |
ee959b00 | 1070 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1071 | show_sas_rphy_##name, NULL) |
1072 | ||
1073 | static ssize_t | |
ee959b00 TJ |
1074 | show_sas_rphy_device_type(struct device *dev, |
1075 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 1076 | { |
ee959b00 | 1077 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
c7ebbbce CH |
1078 | |
1079 | if (!rphy->identify.device_type) | |
1080 | return snprintf(buf, 20, "none\n"); | |
1081 | return get_sas_device_type_names( | |
1082 | rphy->identify.device_type, buf); | |
1083 | } | |
1084 | ||
ee959b00 | 1085 | static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO, |
c7ebbbce CH |
1086 | show_sas_rphy_device_type, NULL); |
1087 | ||
a0125641 | 1088 | static ssize_t |
ee959b00 TJ |
1089 | show_sas_rphy_enclosure_identifier(struct device *dev, |
1090 | struct device_attribute *attr, char *buf) | |
a0125641 | 1091 | { |
ee959b00 | 1092 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1093 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1094 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1095 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1096 | u64 identifier; | |
1097 | int error; | |
1098 | ||
1099 | /* | |
1100 | * Only devices behind an expander are supported, because the | |
1101 | * enclosure identifier is a SMP feature. | |
1102 | */ | |
f4ad7b58 | 1103 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1104 | return -EINVAL; |
1105 | ||
1106 | error = i->f->get_enclosure_identifier(rphy, &identifier); | |
1107 | if (error) | |
1108 | return error; | |
1109 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
1110 | } | |
1111 | ||
ee959b00 | 1112 | static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, |
a0125641 CH |
1113 | show_sas_rphy_enclosure_identifier, NULL); |
1114 | ||
1115 | static ssize_t | |
ee959b00 TJ |
1116 | show_sas_rphy_bay_identifier(struct device *dev, |
1117 | struct device_attribute *attr, char *buf) | |
a0125641 | 1118 | { |
ee959b00 | 1119 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1120 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1121 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1122 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1123 | int val; | |
1124 | ||
f4ad7b58 | 1125 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1126 | return -EINVAL; |
1127 | ||
1128 | val = i->f->get_bay_identifier(rphy); | |
1129 | if (val < 0) | |
1130 | return val; | |
1131 | return sprintf(buf, "%d\n", val); | |
1132 | } | |
1133 | ||
ee959b00 | 1134 | static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, |
a0125641 CH |
1135 | show_sas_rphy_bay_identifier, NULL); |
1136 | ||
c7ebbbce CH |
1137 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
1138 | initiator_port_protocols); | |
1139 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
1140 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
1141 | unsigned long long); | |
1142 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
1143 | ||
42ab0360 JB |
1144 | /* only need 8 bytes of data plus header (4 or 8) */ |
1145 | #define BUF_SIZE 64 | |
1146 | ||
1147 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1148 | { | |
1149 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
1150 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
1151 | struct sas_end_device *rdev; | |
1152 | struct scsi_mode_data mode_data; | |
1153 | int res, error; | |
1154 | ||
1155 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
1156 | ||
1157 | rdev = rphy_to_end_device(rphy); | |
1158 | ||
1159 | if (!buffer) | |
1160 | return -ENOMEM; | |
1161 | ||
1162 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1163 | &mode_data, NULL); | |
1164 | ||
1165 | error = -EINVAL; | |
1166 | if (!scsi_status_is_good(res)) | |
1167 | goto out; | |
1168 | ||
1169 | msdata = buffer + mode_data.header_length + | |
1170 | mode_data.block_descriptor_length; | |
1171 | ||
1172 | if (msdata - buffer > BUF_SIZE - 8) | |
1173 | goto out; | |
1174 | ||
1175 | error = 0; | |
1176 | ||
1177 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1178 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1179 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1180 | ||
1181 | out: | |
1182 | kfree(buffer); | |
1183 | return error; | |
1184 | } | |
1185 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1186 | ||
79cb1819 JB |
1187 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1188 | "sas_end_device", NULL, NULL, NULL); | |
1189 | ||
42ab0360 JB |
1190 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1191 | static ssize_t \ | |
ee959b00 TJ |
1192 | show_sas_end_dev_##name(struct device *dev, \ |
1193 | struct device_attribute *attr, char *buf) \ | |
42ab0360 | 1194 | { \ |
ee959b00 | 1195 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
42ab0360 JB |
1196 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ |
1197 | \ | |
1198 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1199 | } | |
1200 | ||
1201 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1202 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1203 | static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ |
42ab0360 JB |
1204 | show_sas_end_dev_##name, NULL) |
1205 | ||
1206 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1207 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1208 | "%d\n", int); | |
1209 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1210 | "%d\n", int); | |
1211 | ||
79cb1819 JB |
1212 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1213 | "sas_expander", NULL, NULL, NULL); | |
1214 | ||
1215 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1216 | static ssize_t \ | |
ee959b00 TJ |
1217 | show_sas_expander_##name(struct device *dev, \ |
1218 | struct device_attribute *attr, char *buf) \ | |
79cb1819 | 1219 | { \ |
ee959b00 | 1220 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
79cb1819 JB |
1221 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ |
1222 | \ | |
1223 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1224 | } | |
1225 | ||
1226 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1227 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1228 | static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \ |
79cb1819 JB |
1229 | show_sas_expander_##name, NULL) |
1230 | ||
1231 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1232 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1233 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1234 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1235 | "%s\n", char *); | |
1236 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1237 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1238 | unsigned int); | |
1239 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1240 | |
c7ebbbce | 1241 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1242 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1243 | |
1244 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1245 | { | |
1246 | struct Scsi_Host *shost; | |
1247 | struct sas_internal *i; | |
1248 | ||
1249 | if (!scsi_is_sas_rphy(dev)) | |
1250 | return 0; | |
1251 | shost = dev_to_shost(dev->parent->parent); | |
1252 | ||
1253 | if (!shost->transportt) | |
1254 | return 0; | |
1255 | if (shost->transportt->host_attrs.ac.class != | |
1256 | &sas_host_class.class) | |
1257 | return 0; | |
1258 | ||
1259 | i = to_sas_internal(shost->transportt); | |
1260 | return &i->rphy_attr_cont.ac == cont; | |
1261 | } | |
1262 | ||
42ab0360 JB |
1263 | static int sas_end_dev_match(struct attribute_container *cont, |
1264 | struct device *dev) | |
1265 | { | |
1266 | struct Scsi_Host *shost; | |
1267 | struct sas_internal *i; | |
1268 | struct sas_rphy *rphy; | |
1269 | ||
1270 | if (!scsi_is_sas_rphy(dev)) | |
1271 | return 0; | |
1272 | shost = dev_to_shost(dev->parent->parent); | |
1273 | rphy = dev_to_rphy(dev); | |
1274 | ||
1275 | if (!shost->transportt) | |
1276 | return 0; | |
1277 | if (shost->transportt->host_attrs.ac.class != | |
1278 | &sas_host_class.class) | |
1279 | return 0; | |
1280 | ||
1281 | i = to_sas_internal(shost->transportt); | |
1282 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1283 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1284 | } |
1285 | ||
79cb1819 JB |
1286 | static int sas_expander_match(struct attribute_container *cont, |
1287 | struct device *dev) | |
1288 | { | |
1289 | struct Scsi_Host *shost; | |
1290 | struct sas_internal *i; | |
1291 | struct sas_rphy *rphy; | |
1292 | ||
1293 | if (!scsi_is_sas_rphy(dev)) | |
1294 | return 0; | |
1295 | shost = dev_to_shost(dev->parent->parent); | |
1296 | rphy = dev_to_rphy(dev); | |
1297 | ||
1298 | if (!shost->transportt) | |
1299 | return 0; | |
1300 | if (shost->transportt->host_attrs.ac.class != | |
1301 | &sas_host_class.class) | |
1302 | return 0; | |
1303 | ||
1304 | i = to_sas_internal(shost->transportt); | |
1305 | return &i->expander_attr_cont.ac == cont && | |
1306 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1307 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1308 | } |
1309 | ||
2f8600df | 1310 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1311 | { |
1312 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1313 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce | 1314 | |
93c20a59 FT |
1315 | if (rphy->q) |
1316 | blk_cleanup_queue(rphy->q); | |
1317 | ||
c7ebbbce | 1318 | put_device(dev->parent); |
2f8600df | 1319 | kfree(edev); |
c7ebbbce CH |
1320 | } |
1321 | ||
2f8600df | 1322 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1323 | { |
2f8600df JB |
1324 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1325 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1326 | |
93c20a59 FT |
1327 | if (rphy->q) |
1328 | blk_cleanup_queue(rphy->q); | |
1329 | ||
2f8600df JB |
1330 | put_device(dev->parent); |
1331 | kfree(edev); | |
c7ebbbce | 1332 | } |
c7ebbbce | 1333 | |
c5943d36 JB |
1334 | /** |
1335 | * sas_rphy_initialize - common rphy intialization | |
1336 | * @rphy: rphy to initialise | |
1337 | * | |
1338 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1339 | * initialise the common rphy component of each. | |
1340 | */ | |
1341 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1342 | { | |
1343 | INIT_LIST_HEAD(&rphy->list); | |
1344 | } | |
1345 | ||
42ab0360 JB |
1346 | /** |
1347 | * sas_end_device_alloc - allocate an rphy for an end device | |
eb44820c | 1348 | * @parent: which port |
42ab0360 JB |
1349 | * |
1350 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1351 | * | |
1352 | * Returns: | |
1353 | * SAS PHY allocated or %NULL if the allocation failed. | |
1354 | */ | |
65c92b09 | 1355 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1356 | { |
1357 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1358 | struct sas_end_device *rdev; | |
1359 | ||
1360 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1361 | if (!rdev) { | |
42ab0360 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_end_device_release; |
65c92b09 JB |
1368 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1369 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
1370 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d", | |
1371 | shost->host_no, rphy->scsi_target_id, parent->port_identifier); | |
1372 | } else | |
1373 | sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d", | |
1374 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1375 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1376 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1377 | transport_setup_device(&rdev->rphy.dev); |
1378 | ||
1379 | return &rdev->rphy; | |
1380 | } | |
1381 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1382 | ||
79cb1819 JB |
1383 | /** |
1384 | * sas_expander_alloc - allocate an rphy for an end device | |
eb44820c RL |
1385 | * @parent: which port |
1386 | * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE | |
79cb1819 JB |
1387 | * |
1388 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1389 | * | |
1390 | * Returns: | |
1391 | * SAS PHY allocated or %NULL if the allocation failed. | |
1392 | */ | |
65c92b09 | 1393 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1394 | enum sas_device_type type) |
1395 | { | |
1396 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1397 | struct sas_expander_device *rdev; | |
1398 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1399 | ||
1400 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1401 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1402 | ||
1403 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1404 | if (!rdev) { | |
79cb1819 JB |
1405 | return NULL; |
1406 | } | |
1407 | ||
1408 | device_initialize(&rdev->rphy.dev); | |
1409 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1410 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1411 | mutex_lock(&sas_host->lock); |
1412 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1413 | mutex_unlock(&sas_host->lock); | |
1414 | sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d", | |
1415 | shost->host_no, rdev->rphy.scsi_target_id); | |
1416 | rdev->rphy.identify.device_type = type; | |
c5943d36 | 1417 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1418 | transport_setup_device(&rdev->rphy.dev); |
1419 | ||
1420 | return &rdev->rphy; | |
1421 | } | |
1422 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1423 | |
c7ebbbce | 1424 | /** |
eb44820c | 1425 | * sas_rphy_add - add a SAS remote PHY to the device hierarchy |
c7ebbbce CH |
1426 | * @rphy: The remote PHY to be added |
1427 | * | |
1428 | * Publishes a SAS remote PHY to the rest of the system. | |
1429 | */ | |
1430 | int sas_rphy_add(struct sas_rphy *rphy) | |
1431 | { | |
65c92b09 | 1432 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1433 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1434 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1435 | struct sas_identify *identify = &rphy->identify; | |
1436 | int error; | |
1437 | ||
1438 | if (parent->rphy) | |
1439 | return -ENXIO; | |
1440 | parent->rphy = rphy; | |
1441 | ||
1442 | error = device_add(&rphy->dev); | |
1443 | if (error) | |
1444 | return error; | |
1445 | transport_add_device(&rphy->dev); | |
1446 | transport_configure_device(&rphy->dev); | |
39dca558 JB |
1447 | if (sas_bsg_initialize(shost, rphy)) |
1448 | printk("fail to a bsg device %s\n", rphy->dev.bus_id); | |
1449 | ||
c7ebbbce | 1450 | |
e02f3f59 | 1451 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1452 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1453 | if (identify->device_type == SAS_END_DEVICE && | |
1454 | (identify->target_port_protocols & | |
1455 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1456 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1457 | else if (identify->device_type == SAS_END_DEVICE) |
1458 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1459 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1460 | |
79cb1819 JB |
1461 | if (identify->device_type == SAS_END_DEVICE && |
1462 | rphy->scsi_target_id != -1) { | |
e8bf3941 | 1463 | scsi_scan_target(&rphy->dev, 0, |
c8490f3a | 1464 | rphy->scsi_target_id, SCAN_WILD_CARD, 0); |
c7ebbbce CH |
1465 | } |
1466 | ||
1467 | return 0; | |
1468 | } | |
1469 | EXPORT_SYMBOL(sas_rphy_add); | |
1470 | ||
1471 | /** | |
eb44820c RL |
1472 | * sas_rphy_free - free a SAS remote PHY |
1473 | * @rphy: SAS remote PHY to free | |
c7ebbbce CH |
1474 | * |
1475 | * Frees the specified SAS remote PHY. | |
1476 | * | |
1477 | * Note: | |
1478 | * This function must only be called on a remote | |
1479 | * PHY that has not sucessfully been added using | |
6f63caae | 1480 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
c7ebbbce CH |
1481 | */ |
1482 | void sas_rphy_free(struct sas_rphy *rphy) | |
1483 | { | |
92aab646 | 1484 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1485 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1486 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1487 | ||
e02f3f59 | 1488 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1489 | list_del(&rphy->list); |
e02f3f59 | 1490 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1491 | |
b6aff669 JB |
1492 | sas_bsg_remove(shost, rphy); |
1493 | ||
92aab646 | 1494 | transport_destroy_device(dev); |
2f8600df | 1495 | |
92aab646 | 1496 | put_device(dev); |
c7ebbbce CH |
1497 | } |
1498 | EXPORT_SYMBOL(sas_rphy_free); | |
1499 | ||
1500 | /** | |
eb44820c | 1501 | * sas_rphy_delete - remove and free SAS remote PHY |
6f63caae | 1502 | * @rphy: SAS remote PHY to remove and free |
c7ebbbce | 1503 | * |
6f63caae | 1504 | * Removes the specified SAS remote PHY and frees it. |
c7ebbbce CH |
1505 | */ |
1506 | void | |
1507 | sas_rphy_delete(struct sas_rphy *rphy) | |
6f63caae DW |
1508 | { |
1509 | sas_rphy_remove(rphy); | |
1510 | sas_rphy_free(rphy); | |
1511 | } | |
1512 | EXPORT_SYMBOL(sas_rphy_delete); | |
1513 | ||
1514 | /** | |
eb44820c | 1515 | * sas_rphy_remove - remove SAS remote PHY |
6f63caae DW |
1516 | * @rphy: SAS remote phy to remove |
1517 | * | |
1518 | * Removes the specified SAS remote PHY. | |
1519 | */ | |
1520 | void | |
1521 | sas_rphy_remove(struct sas_rphy *rphy) | |
c7ebbbce CH |
1522 | { |
1523 | struct device *dev = &rphy->dev; | |
65c92b09 | 1524 | struct sas_port *parent = dev_to_sas_port(dev->parent); |
c7ebbbce | 1525 | |
d4054239 CH |
1526 | switch (rphy->identify.device_type) { |
1527 | case SAS_END_DEVICE: | |
1528 | scsi_remove_target(dev); | |
1529 | break; | |
1530 | case SAS_EDGE_EXPANDER_DEVICE: | |
1531 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1532 | sas_remove_children(dev); |
d4054239 CH |
1533 | break; |
1534 | default: | |
1535 | break; | |
1536 | } | |
c7ebbbce | 1537 | |
fe8b2304 CH |
1538 | transport_remove_device(dev); |
1539 | device_del(dev); | |
c7ebbbce | 1540 | |
33b114e9 | 1541 | parent->rphy = NULL; |
c7ebbbce | 1542 | } |
6f63caae | 1543 | EXPORT_SYMBOL(sas_rphy_remove); |
c7ebbbce CH |
1544 | |
1545 | /** | |
eb44820c | 1546 | * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY |
c7ebbbce CH |
1547 | * @dev: device to check |
1548 | * | |
1549 | * Returns: | |
1550 | * %1 if the device represents a SAS remote PHY, %0 else | |
1551 | */ | |
1552 | int scsi_is_sas_rphy(const struct device *dev) | |
1553 | { | |
2f8600df JB |
1554 | return dev->release == sas_end_device_release || |
1555 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1556 | } |
1557 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1558 | ||
1559 | ||
1560 | /* | |
1561 | * SCSI scan helper | |
1562 | */ | |
1563 | ||
e02f3f59 CH |
1564 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
1565 | uint id, uint lun) | |
c7ebbbce CH |
1566 | { |
1567 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1568 | struct sas_rphy *rphy; | |
c7ebbbce | 1569 | |
e02f3f59 | 1570 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1571 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1572 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1573 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1574 | continue; |
1575 | ||
e8bf3941 | 1576 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1577 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
e8bf3941 | 1578 | scsi_scan_target(&rphy->dev, 0, |
e02f3f59 CH |
1579 | rphy->scsi_target_id, lun, 1); |
1580 | } | |
c7ebbbce | 1581 | } |
e02f3f59 | 1582 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1583 | |
e02f3f59 | 1584 | return 0; |
c7ebbbce CH |
1585 | } |
1586 | ||
1587 | ||
1588 | /* | |
1589 | * Setup / Teardown code | |
1590 | */ | |
1591 | ||
d24e1eeb | 1592 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
ee959b00 | 1593 | i->private_##attrb[count] = dev_attr_##field; \ |
42ab0360 | 1594 | i->private_##attrb[count].attr.mode = perm; \ |
42ab0360 JB |
1595 | i->attrb[count] = &i->private_##attrb[count]; \ |
1596 | if (test) \ | |
1597 | count++ | |
1598 | ||
d24e1eeb | 1599 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
ee959b00 | 1600 | i->private_##attrb[count] = dev_attr_##field; \ |
d24e1eeb JB |
1601 | i->private_##attrb[count].attr.mode = perm; \ |
1602 | if (ro_test) { \ | |
1603 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1604 | i->private_##attrb[count].store = NULL; \ | |
1605 | } \ | |
1606 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1607 | if (test) \ | |
1608 | count++ | |
42ab0360 JB |
1609 | |
1610 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1611 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1612 | |
dd9fbb52 | 1613 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1614 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1615 | |
65c92b09 | 1616 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1617 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1618 | |
d24e1eeb JB |
1619 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1620 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1621 | !i->f->set_phy_speed, S_IRUGO) | |
1622 | ||
acbf167d DW |
1623 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
1624 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1625 | !i->f->func, S_IRUGO) | |
1626 | ||
65c92b09 JB |
1627 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1628 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1629 | ||
1630 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1631 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1632 | |
65c92b09 | 1633 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
fe3b5bfe | 1634 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
07ba3a95 | 1635 | |
65c92b09 | 1636 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
fe3b5bfe | 1637 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
dd9fbb52 | 1638 | |
42ab0360 JB |
1639 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1640 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1641 | |
79cb1819 JB |
1642 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1643 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1644 | ||
c7ebbbce | 1645 | /** |
eb44820c | 1646 | * sas_attach_transport - instantiate SAS transport template |
c7ebbbce CH |
1647 | * @ft: SAS transport class function template |
1648 | */ | |
1649 | struct scsi_transport_template * | |
1650 | sas_attach_transport(struct sas_function_template *ft) | |
1651 | { | |
1652 | struct sas_internal *i; | |
1653 | int count; | |
1654 | ||
24669f75 | 1655 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1656 | if (!i) |
1657 | return NULL; | |
c7ebbbce | 1658 | |
e02f3f59 | 1659 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1660 | |
1661 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1662 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1663 | i->t.host_attrs.ac.match = sas_host_match; | |
1664 | transport_container_register(&i->t.host_attrs); | |
1665 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1666 | ||
1667 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1668 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1669 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1670 | transport_container_register(&i->phy_attr_cont); | |
1671 | ||
65c92b09 JB |
1672 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1673 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1674 | i->port_attr_cont.ac.match = sas_port_match; | |
1675 | transport_container_register(&i->port_attr_cont); | |
1676 | ||
c7ebbbce CH |
1677 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1678 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1679 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1680 | transport_container_register(&i->rphy_attr_cont); | |
1681 | ||
42ab0360 JB |
1682 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1683 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1684 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1685 | transport_container_register(&i->end_dev_attr_cont); | |
1686 | ||
79cb1819 JB |
1687 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1688 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1689 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1690 | transport_container_register(&i->expander_attr_cont); | |
1691 | ||
c7ebbbce CH |
1692 | i->f = ft; |
1693 | ||
1694 | count = 0; | |
65c92b09 | 1695 | SETUP_PORT_ATTRIBUTE(num_phys); |
c7ebbbce CH |
1696 | i->host_attrs[count] = NULL; |
1697 | ||
1698 | count = 0; | |
65c92b09 JB |
1699 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1700 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1701 | SETUP_PHY_ATTRIBUTE(device_type); | |
1702 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1703 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1704 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1705 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1706 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1707 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1708 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1709 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1710 | |
1711 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1712 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1713 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1714 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1715 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1716 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1717 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1718 | i->phy_attrs[count] = NULL; |
1719 | ||
65c92b09 JB |
1720 | count = 0; |
1721 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1722 | i->port_attrs[count] = NULL; | |
1723 | ||
c7ebbbce CH |
1724 | count = 0; |
1725 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1726 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1727 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1728 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1729 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
dd9fbb52 JB |
1730 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1731 | get_enclosure_identifier); | |
1732 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1733 | get_bay_identifier); | |
c7ebbbce CH |
1734 | i->rphy_attrs[count] = NULL; |
1735 | ||
42ab0360 JB |
1736 | count = 0; |
1737 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1738 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1739 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
1740 | i->end_dev_attrs[count] = NULL; | |
1741 | ||
79cb1819 JB |
1742 | count = 0; |
1743 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1744 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1745 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1746 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1747 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1748 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1749 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1750 | i->expander_attrs[count] = NULL; | |
1751 | ||
c7ebbbce CH |
1752 | return &i->t; |
1753 | } | |
1754 | EXPORT_SYMBOL(sas_attach_transport); | |
1755 | ||
1756 | /** | |
eb44820c | 1757 | * sas_release_transport - release SAS transport template instance |
c7ebbbce CH |
1758 | * @t: transport template instance |
1759 | */ | |
1760 | void sas_release_transport(struct scsi_transport_template *t) | |
1761 | { | |
1762 | struct sas_internal *i = to_sas_internal(t); | |
1763 | ||
1764 | transport_container_unregister(&i->t.host_attrs); | |
1765 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1766 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1767 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1768 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1769 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1770 | |
1771 | kfree(i); | |
1772 | } | |
1773 | EXPORT_SYMBOL(sas_release_transport); | |
1774 | ||
1775 | static __init int sas_transport_init(void) | |
1776 | { | |
1777 | int error; | |
1778 | ||
1779 | error = transport_class_register(&sas_host_class); | |
1780 | if (error) | |
1781 | goto out; | |
1782 | error = transport_class_register(&sas_phy_class); | |
1783 | if (error) | |
1784 | goto out_unregister_transport; | |
65c92b09 | 1785 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1786 | if (error) |
1787 | goto out_unregister_phy; | |
65c92b09 JB |
1788 | error = transport_class_register(&sas_rphy_class); |
1789 | if (error) | |
1790 | goto out_unregister_port; | |
42ab0360 JB |
1791 | error = transport_class_register(&sas_end_dev_class); |
1792 | if (error) | |
1793 | goto out_unregister_rphy; | |
79cb1819 JB |
1794 | error = transport_class_register(&sas_expander_class); |
1795 | if (error) | |
1796 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1797 | |
1798 | return 0; | |
1799 | ||
79cb1819 JB |
1800 | out_unregister_end_dev: |
1801 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1802 | out_unregister_rphy: |
1803 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1804 | out_unregister_port: |
1805 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1806 | out_unregister_phy: |
1807 | transport_class_unregister(&sas_phy_class); | |
1808 | out_unregister_transport: | |
1809 | transport_class_unregister(&sas_host_class); | |
1810 | out: | |
1811 | return error; | |
1812 | ||
1813 | } | |
1814 | ||
1815 | static void __exit sas_transport_exit(void) | |
1816 | { | |
1817 | transport_class_unregister(&sas_host_class); | |
1818 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1819 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1820 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1821 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1822 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1823 | } |
1824 | ||
1825 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1826 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
1827 | MODULE_LICENSE("GPL"); |
1828 | ||
1829 | module_init(sas_transport_init); | |
1830 | module_exit(sas_transport_exit); |