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, | |
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)) { | |
9934c8c0 | 166 | req = blk_fetch_request(q); |
7aa68e80 FT |
167 | if (!req) |
168 | break; | |
169 | ||
7aa68e80 FT |
170 | spin_unlock_irq(q->queue_lock); |
171 | ||
172 | handler = to_sas_internal(shost->transportt)->f->smp_handler; | |
173 | ret = handler(shost, rphy, req); | |
2d507a01 | 174 | req->errors = ret; |
7aa68e80 | 175 | |
93bdcba5 | 176 | blk_end_request_all(req, ret); |
7aa68e80 | 177 | |
93bdcba5 | 178 | spin_lock_irq(q->queue_lock); |
7aa68e80 FT |
179 | } |
180 | } | |
181 | ||
182 | static void sas_host_smp_request(struct request_queue *q) | |
183 | { | |
184 | sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); | |
185 | } | |
186 | ||
187 | static void sas_non_host_smp_request(struct request_queue *q) | |
188 | { | |
189 | struct sas_rphy *rphy = q->queuedata; | |
190 | sas_smp_request(q, rphy_to_shost(rphy), rphy); | |
191 | } | |
192 | ||
93c20a59 FT |
193 | static void sas_host_release(struct device *dev) |
194 | { | |
195 | struct Scsi_Host *shost = dev_to_shost(dev); | |
196 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
197 | struct request_queue *q = sas_host->q; | |
198 | ||
199 | if (q) | |
200 | blk_cleanup_queue(q); | |
201 | } | |
202 | ||
39dca558 | 203 | static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) |
7aa68e80 FT |
204 | { |
205 | struct request_queue *q; | |
206 | int error; | |
39dca558 | 207 | struct device *dev; |
71610f55 | 208 | char namebuf[20]; |
39dca558 | 209 | const char *name; |
93c20a59 | 210 | void (*release)(struct device *); |
7aa68e80 FT |
211 | |
212 | if (!to_sas_internal(shost->transportt)->f->smp_handler) { | |
213 | printk("%s can't handle SMP requests\n", shost->hostt->name); | |
214 | return 0; | |
215 | } | |
216 | ||
39dca558 | 217 | if (rphy) { |
7aa68e80 | 218 | q = blk_init_queue(sas_non_host_smp_request, NULL); |
39dca558 | 219 | dev = &rphy->dev; |
71610f55 | 220 | name = dev_name(dev); |
93c20a59 | 221 | release = NULL; |
39dca558 | 222 | } else { |
7aa68e80 | 223 | q = blk_init_queue(sas_host_smp_request, NULL); |
39dca558 JB |
224 | dev = &shost->shost_gendev; |
225 | snprintf(namebuf, sizeof(namebuf), | |
226 | "sas_host%d", shost->host_no); | |
227 | name = namebuf; | |
93c20a59 | 228 | release = sas_host_release; |
39dca558 | 229 | } |
7aa68e80 FT |
230 | if (!q) |
231 | return -ENOMEM; | |
232 | ||
93c20a59 | 233 | error = bsg_register_queue(q, dev, name, release); |
7aa68e80 FT |
234 | if (error) { |
235 | blk_cleanup_queue(q); | |
236 | return -ENOMEM; | |
237 | } | |
238 | ||
b6aff669 JB |
239 | if (rphy) |
240 | rphy->q = q; | |
241 | else | |
242 | to_sas_host_attrs(shost)->q = q; | |
243 | ||
7aa68e80 FT |
244 | if (rphy) |
245 | q->queuedata = rphy; | |
246 | else | |
247 | q->queuedata = shost; | |
248 | ||
75ad23bc | 249 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); |
7aa68e80 FT |
250 | return 0; |
251 | } | |
252 | ||
b6aff669 JB |
253 | static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy) |
254 | { | |
255 | struct request_queue *q; | |
256 | ||
257 | if (rphy) | |
258 | q = rphy->q; | |
259 | else | |
260 | q = to_sas_host_attrs(shost)->q; | |
261 | ||
262 | if (!q) | |
263 | return; | |
264 | ||
265 | bsg_unregister_queue(q); | |
b6aff669 JB |
266 | } |
267 | ||
c7ebbbce CH |
268 | /* |
269 | * SAS host attributes | |
270 | */ | |
271 | ||
37be6eeb | 272 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 273 | struct device *cdev) |
c7ebbbce CH |
274 | { |
275 | struct Scsi_Host *shost = dev_to_shost(dev); | |
276 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
277 | ||
278 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 279 | mutex_init(&sas_host->lock); |
c7ebbbce | 280 | sas_host->next_target_id = 0; |
79cb1819 | 281 | sas_host->next_expander_id = 0; |
c9fefeb2 | 282 | sas_host->next_port_id = 0; |
7aa68e80 | 283 | |
39dca558 | 284 | if (sas_bsg_initialize(shost, NULL)) |
7aa68e80 FT |
285 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", |
286 | shost->host_no); | |
287 | ||
c7ebbbce CH |
288 | return 0; |
289 | } | |
290 | ||
b6aff669 | 291 | static int sas_host_remove(struct transport_container *tc, struct device *dev, |
ee959b00 | 292 | struct device *cdev) |
b6aff669 JB |
293 | { |
294 | struct Scsi_Host *shost = dev_to_shost(dev); | |
295 | ||
296 | sas_bsg_remove(shost, NULL); | |
297 | ||
298 | return 0; | |
299 | } | |
300 | ||
c7ebbbce | 301 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
b6aff669 | 302 | "sas_host", sas_host_setup, sas_host_remove, NULL); |
c7ebbbce CH |
303 | |
304 | static int sas_host_match(struct attribute_container *cont, | |
305 | struct device *dev) | |
306 | { | |
307 | struct Scsi_Host *shost; | |
308 | struct sas_internal *i; | |
309 | ||
310 | if (!scsi_is_host_device(dev)) | |
311 | return 0; | |
312 | shost = dev_to_shost(dev); | |
313 | ||
314 | if (!shost->transportt) | |
315 | return 0; | |
316 | if (shost->transportt->host_attrs.ac.class != | |
317 | &sas_host_class.class) | |
318 | return 0; | |
319 | ||
320 | i = to_sas_internal(shost->transportt); | |
321 | return &i->t.host_attrs.ac == cont; | |
322 | } | |
323 | ||
324 | static int do_sas_phy_delete(struct device *dev, void *data) | |
325 | { | |
65c92b09 JB |
326 | int pass = (int)(unsigned long)data; |
327 | ||
328 | if (pass == 0 && scsi_is_sas_port(dev)) | |
329 | sas_port_delete(dev_to_sas_port(dev)); | |
330 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
331 | sas_phy_delete(dev_to_phy(dev)); |
332 | return 0; | |
333 | } | |
334 | ||
65c92b09 | 335 | /** |
eb44820c | 336 | * sas_remove_children - tear down a devices SAS data structures |
65c92b09 JB |
337 | * @dev: device belonging to the sas object |
338 | * | |
339 | * Removes all SAS PHYs and remote PHYs for a given object | |
340 | */ | |
341 | void sas_remove_children(struct device *dev) | |
342 | { | |
343 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
344 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
345 | } | |
346 | EXPORT_SYMBOL(sas_remove_children); | |
347 | ||
c7ebbbce | 348 | /** |
eb44820c | 349 | * sas_remove_host - tear down a Scsi_Host's SAS data structures |
c7ebbbce CH |
350 | * @shost: Scsi Host that is torn down |
351 | * | |
352 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host. | |
353 | * Must be called just before scsi_remove_host for SAS HBAs. | |
354 | */ | |
355 | void sas_remove_host(struct Scsi_Host *shost) | |
356 | { | |
65c92b09 | 357 | sas_remove_children(&shost->shost_gendev); |
c7ebbbce CH |
358 | } |
359 | EXPORT_SYMBOL(sas_remove_host); | |
360 | ||
361 | ||
362 | /* | |
65c92b09 | 363 | * SAS Phy attributes |
c7ebbbce CH |
364 | */ |
365 | ||
366 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
367 | static ssize_t \ | |
ee959b00 TJ |
368 | show_sas_phy_##name(struct device *dev, \ |
369 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 370 | { \ |
ee959b00 | 371 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
372 | \ |
373 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
374 | } | |
375 | ||
376 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
377 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 378 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
379 | |
380 | #define sas_phy_show_protocol(field, name) \ | |
381 | static ssize_t \ | |
ee959b00 TJ |
382 | show_sas_phy_##name(struct device *dev, \ |
383 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 384 | { \ |
ee959b00 | 385 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
386 | \ |
387 | if (!phy->field) \ | |
388 | return snprintf(buf, 20, "none\n"); \ | |
389 | return get_sas_protocol_names(phy->field, buf); \ | |
390 | } | |
391 | ||
392 | #define sas_phy_protocol_attr(field, name) \ | |
393 | sas_phy_show_protocol(field, name) \ | |
ee959b00 | 394 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
395 | |
396 | #define sas_phy_show_linkspeed(field) \ | |
397 | static ssize_t \ | |
ee959b00 TJ |
398 | show_sas_phy_##field(struct device *dev, \ |
399 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 400 | { \ |
ee959b00 | 401 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
402 | \ |
403 | return get_sas_linkspeed_names(phy->field, buf); \ | |
404 | } | |
405 | ||
d24e1eeb JB |
406 | /* Fudge to tell if we're minimum or maximum */ |
407 | #define sas_phy_store_linkspeed(field) \ | |
408 | static ssize_t \ | |
ee959b00 TJ |
409 | store_sas_phy_##field(struct device *dev, \ |
410 | struct device_attribute *attr, \ | |
411 | const char *buf, size_t count) \ | |
d24e1eeb | 412 | { \ |
ee959b00 | 413 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
d24e1eeb JB |
414 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
415 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
416 | u32 value; \ | |
417 | struct sas_phy_linkrates rates = {0}; \ | |
418 | int error; \ | |
419 | \ | |
420 | error = set_sas_linkspeed_names(&value, buf); \ | |
421 | if (error) \ | |
422 | return error; \ | |
423 | rates.field = value; \ | |
424 | error = i->f->set_phy_speed(phy, &rates); \ | |
425 | \ | |
426 | return error ? error : count; \ | |
427 | } | |
428 | ||
429 | #define sas_phy_linkspeed_rw_attr(field) \ | |
430 | sas_phy_show_linkspeed(field) \ | |
431 | sas_phy_store_linkspeed(field) \ | |
ee959b00 | 432 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ |
d24e1eeb JB |
433 | store_sas_phy_##field) |
434 | ||
c7ebbbce CH |
435 | #define sas_phy_linkspeed_attr(field) \ |
436 | sas_phy_show_linkspeed(field) \ | |
ee959b00 | 437 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c7ebbbce | 438 | |
d24e1eeb | 439 | |
c3ee74c4 CH |
440 | #define sas_phy_show_linkerror(field) \ |
441 | static ssize_t \ | |
ee959b00 TJ |
442 | show_sas_phy_##field(struct device *dev, \ |
443 | struct device_attribute *attr, char *buf) \ | |
c3ee74c4 | 444 | { \ |
ee959b00 | 445 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c3ee74c4 CH |
446 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
447 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
448 | int error; \ | |
449 | \ | |
dd9fbb52 | 450 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
451 | if (error) \ |
452 | return error; \ | |
453 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
454 | } | |
455 | ||
456 | #define sas_phy_linkerror_attr(field) \ | |
457 | sas_phy_show_linkerror(field) \ | |
ee959b00 | 458 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c3ee74c4 CH |
459 | |
460 | ||
c7ebbbce | 461 | static ssize_t |
ee959b00 TJ |
462 | show_sas_device_type(struct device *dev, |
463 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 464 | { |
ee959b00 | 465 | struct sas_phy *phy = transport_class_to_phy(dev); |
c7ebbbce CH |
466 | |
467 | if (!phy->identify.device_type) | |
468 | return snprintf(buf, 20, "none\n"); | |
469 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
470 | } | |
ee959b00 | 471 | static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
c7ebbbce | 472 | |
ee959b00 | 473 | static ssize_t do_sas_phy_enable(struct device *dev, |
acbf167d DW |
474 | size_t count, int enable) |
475 | { | |
ee959b00 | 476 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
477 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
478 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
479 | int error; | |
480 | ||
481 | error = i->f->phy_enable(phy, enable); | |
482 | if (error) | |
483 | return error; | |
484 | phy->enabled = enable; | |
485 | return count; | |
486 | }; | |
487 | ||
ee959b00 TJ |
488 | static ssize_t |
489 | store_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
490 | const char *buf, size_t count) | |
acbf167d DW |
491 | { |
492 | if (count < 1) | |
493 | return -EINVAL; | |
494 | ||
495 | switch (buf[0]) { | |
496 | case '0': | |
ee959b00 | 497 | do_sas_phy_enable(dev, count, 0); |
acbf167d DW |
498 | break; |
499 | case '1': | |
ee959b00 | 500 | do_sas_phy_enable(dev, count, 1); |
acbf167d DW |
501 | break; |
502 | default: | |
503 | return -EINVAL; | |
504 | } | |
505 | ||
506 | return count; | |
507 | } | |
508 | ||
ee959b00 TJ |
509 | static ssize_t |
510 | show_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
511 | char *buf) | |
acbf167d | 512 | { |
ee959b00 | 513 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
514 | |
515 | return snprintf(buf, 20, "%d", phy->enabled); | |
516 | } | |
517 | ||
ee959b00 | 518 | static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, |
acbf167d DW |
519 | store_sas_phy_enable); |
520 | ||
ee959b00 TJ |
521 | static ssize_t |
522 | do_sas_phy_reset(struct device *dev, size_t count, int hard_reset) | |
07ba3a95 | 523 | { |
ee959b00 | 524 | struct sas_phy *phy = transport_class_to_phy(dev); |
07ba3a95 CH |
525 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
526 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
527 | int error; | |
528 | ||
07ba3a95 CH |
529 | error = i->f->phy_reset(phy, hard_reset); |
530 | if (error) | |
531 | return error; | |
532 | return count; | |
533 | }; | |
534 | ||
ee959b00 TJ |
535 | static ssize_t |
536 | store_sas_link_reset(struct device *dev, struct device_attribute *attr, | |
537 | const char *buf, size_t count) | |
07ba3a95 | 538 | { |
ee959b00 | 539 | return do_sas_phy_reset(dev, count, 0); |
07ba3a95 | 540 | } |
ee959b00 | 541 | static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); |
07ba3a95 | 542 | |
ee959b00 TJ |
543 | static ssize_t |
544 | store_sas_hard_reset(struct device *dev, struct device_attribute *attr, | |
545 | const char *buf, size_t count) | |
07ba3a95 | 546 | { |
ee959b00 | 547 | return do_sas_phy_reset(dev, count, 1); |
07ba3a95 | 548 | } |
ee959b00 | 549 | static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); |
07ba3a95 | 550 | |
c7ebbbce CH |
551 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
552 | initiator_port_protocols); | |
553 | sas_phy_protocol_attr(identify.target_port_protocols, | |
554 | target_port_protocols); | |
555 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
556 | unsigned long long); | |
557 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 558 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
559 | sas_phy_linkspeed_attr(negotiated_linkrate); |
560 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 561 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 562 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 563 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
564 | sas_phy_linkerror_attr(invalid_dword_count); |
565 | sas_phy_linkerror_attr(running_disparity_error_count); | |
566 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
567 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce CH |
568 | |
569 | ||
570 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
571 | "sas_phy", NULL, NULL, NULL); | |
572 | ||
573 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
574 | { | |
575 | struct Scsi_Host *shost; | |
576 | struct sas_internal *i; | |
577 | ||
578 | if (!scsi_is_sas_phy(dev)) | |
579 | return 0; | |
580 | shost = dev_to_shost(dev->parent); | |
581 | ||
582 | if (!shost->transportt) | |
583 | return 0; | |
584 | if (shost->transportt->host_attrs.ac.class != | |
585 | &sas_host_class.class) | |
586 | return 0; | |
587 | ||
588 | i = to_sas_internal(shost->transportt); | |
589 | return &i->phy_attr_cont.ac == cont; | |
590 | } | |
591 | ||
592 | static void sas_phy_release(struct device *dev) | |
593 | { | |
594 | struct sas_phy *phy = dev_to_phy(dev); | |
595 | ||
596 | put_device(dev->parent); | |
597 | kfree(phy); | |
598 | } | |
599 | ||
600 | /** | |
eb44820c | 601 | * sas_phy_alloc - allocates and initialize a SAS PHY structure |
c7ebbbce | 602 | * @parent: Parent device |
d99ca418 | 603 | * @number: Phy index |
c7ebbbce CH |
604 | * |
605 | * Allocates an SAS PHY structure. It will be added in the device tree | |
606 | * below the device specified by @parent, which has to be either a Scsi_Host | |
607 | * or sas_rphy. | |
608 | * | |
609 | * Returns: | |
610 | * SAS PHY allocated or %NULL if the allocation failed. | |
611 | */ | |
612 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
613 | { | |
614 | struct Scsi_Host *shost = dev_to_shost(parent); | |
615 | struct sas_phy *phy; | |
616 | ||
24669f75 | 617 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
618 | if (!phy) |
619 | return NULL; | |
c7ebbbce | 620 | |
c7ebbbce | 621 | phy->number = number; |
acbf167d | 622 | phy->enabled = 1; |
c7ebbbce CH |
623 | |
624 | device_initialize(&phy->dev); | |
625 | phy->dev.parent = get_device(parent); | |
626 | phy->dev.release = sas_phy_release; | |
65c92b09 | 627 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
628 | if (scsi_is_sas_expander_device(parent)) { |
629 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 | 630 | dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
631 | rphy->scsi_target_id, number); |
632 | } else | |
71610f55 | 633 | dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number); |
c7ebbbce CH |
634 | |
635 | transport_setup_device(&phy->dev); | |
636 | ||
637 | return phy; | |
638 | } | |
639 | EXPORT_SYMBOL(sas_phy_alloc); | |
640 | ||
641 | /** | |
eb44820c | 642 | * sas_phy_add - add a SAS PHY to the device hierarchy |
c7ebbbce CH |
643 | * @phy: The PHY to be added |
644 | * | |
645 | * Publishes a SAS PHY to the rest of the system. | |
646 | */ | |
647 | int sas_phy_add(struct sas_phy *phy) | |
648 | { | |
649 | int error; | |
650 | ||
651 | error = device_add(&phy->dev); | |
652 | if (!error) { | |
653 | transport_add_device(&phy->dev); | |
654 | transport_configure_device(&phy->dev); | |
655 | } | |
656 | ||
657 | return error; | |
658 | } | |
659 | EXPORT_SYMBOL(sas_phy_add); | |
660 | ||
661 | /** | |
eb44820c | 662 | * sas_phy_free - free a SAS PHY |
c7ebbbce CH |
663 | * @phy: SAS PHY to free |
664 | * | |
665 | * Frees the specified SAS PHY. | |
666 | * | |
667 | * Note: | |
668 | * This function must only be called on a PHY that has not | |
af901ca1 | 669 | * successfully been added using sas_phy_add(). |
c7ebbbce CH |
670 | */ |
671 | void sas_phy_free(struct sas_phy *phy) | |
672 | { | |
673 | transport_destroy_device(&phy->dev); | |
92aab646 | 674 | put_device(&phy->dev); |
c7ebbbce CH |
675 | } |
676 | EXPORT_SYMBOL(sas_phy_free); | |
677 | ||
678 | /** | |
eb44820c | 679 | * sas_phy_delete - remove SAS PHY |
c7ebbbce CH |
680 | * @phy: SAS PHY to remove |
681 | * | |
682 | * Removes the specified SAS PHY. If the SAS PHY has an | |
683 | * associated remote PHY it is removed before. | |
684 | */ | |
685 | void | |
686 | sas_phy_delete(struct sas_phy *phy) | |
687 | { | |
688 | struct device *dev = &phy->dev; | |
689 | ||
65c92b09 JB |
690 | /* this happens if the phy is still part of a port when deleted */ |
691 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
692 | |
693 | transport_remove_device(dev); | |
694 | device_del(dev); | |
695 | transport_destroy_device(dev); | |
92aab646 | 696 | put_device(dev); |
c7ebbbce CH |
697 | } |
698 | EXPORT_SYMBOL(sas_phy_delete); | |
699 | ||
700 | /** | |
eb44820c | 701 | * scsi_is_sas_phy - check if a struct device represents a SAS PHY |
c7ebbbce CH |
702 | * @dev: device to check |
703 | * | |
704 | * Returns: | |
705 | * %1 if the device represents a SAS PHY, %0 else | |
706 | */ | |
707 | int scsi_is_sas_phy(const struct device *dev) | |
708 | { | |
709 | return dev->release == sas_phy_release; | |
710 | } | |
711 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
712 | ||
65c92b09 JB |
713 | /* |
714 | * SAS Port attributes | |
715 | */ | |
716 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
717 | static ssize_t \ | |
ee959b00 TJ |
718 | show_sas_port_##name(struct device *dev, \ |
719 | struct device_attribute *attr, char *buf) \ | |
65c92b09 | 720 | { \ |
ee959b00 | 721 | struct sas_port *port = transport_class_to_sas_port(dev); \ |
65c92b09 JB |
722 | \ |
723 | return snprintf(buf, 20, format_string, cast port->field); \ | |
724 | } | |
725 | ||
726 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
727 | sas_port_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 728 | static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) |
65c92b09 JB |
729 | |
730 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
731 | ||
732 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
733 | "sas_port", NULL, NULL, NULL); | |
734 | ||
735 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
736 | { | |
737 | struct Scsi_Host *shost; | |
738 | struct sas_internal *i; | |
739 | ||
740 | if (!scsi_is_sas_port(dev)) | |
741 | return 0; | |
742 | shost = dev_to_shost(dev->parent); | |
743 | ||
744 | if (!shost->transportt) | |
745 | return 0; | |
746 | if (shost->transportt->host_attrs.ac.class != | |
747 | &sas_host_class.class) | |
748 | return 0; | |
749 | ||
750 | i = to_sas_internal(shost->transportt); | |
751 | return &i->port_attr_cont.ac == cont; | |
752 | } | |
753 | ||
754 | ||
755 | static void sas_port_release(struct device *dev) | |
756 | { | |
757 | struct sas_port *port = dev_to_sas_port(dev); | |
758 | ||
759 | BUG_ON(!list_empty(&port->phy_list)); | |
760 | ||
761 | put_device(dev->parent); | |
762 | kfree(port); | |
763 | } | |
764 | ||
765 | static void sas_port_create_link(struct sas_port *port, | |
766 | struct sas_phy *phy) | |
767 | { | |
21434966 DW |
768 | int res; |
769 | ||
770 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
71610f55 | 771 | dev_name(&phy->dev)); |
21434966 DW |
772 | if (res) |
773 | goto err; | |
774 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
775 | if (res) | |
776 | goto err; | |
777 | return; | |
778 | err: | |
779 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
cadbd4a5 | 780 | __func__, res); |
65c92b09 JB |
781 | } |
782 | ||
783 | static void sas_port_delete_link(struct sas_port *port, | |
784 | struct sas_phy *phy) | |
785 | { | |
71610f55 | 786 | sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev)); |
65c92b09 JB |
787 | sysfs_remove_link(&phy->dev.kobj, "port"); |
788 | } | |
789 | ||
790 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
791 | * | |
792 | * @parent: parent device | |
793 | * @port_id: port number | |
794 | * | |
795 | * Allocates a SAS port structure. It will be added to the device tree | |
796 | * below the device specified by @parent which must be either a Scsi_Host | |
797 | * or a sas_expander_device. | |
798 | * | |
799 | * Returns %NULL on error | |
800 | */ | |
801 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
802 | { | |
803 | struct Scsi_Host *shost = dev_to_shost(parent); | |
804 | struct sas_port *port; | |
805 | ||
806 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
807 | if (!port) | |
808 | return NULL; | |
809 | ||
810 | port->port_identifier = port_id; | |
811 | ||
812 | device_initialize(&port->dev); | |
813 | ||
814 | port->dev.parent = get_device(parent); | |
815 | port->dev.release = sas_port_release; | |
816 | ||
817 | mutex_init(&port->phy_list_mutex); | |
818 | INIT_LIST_HEAD(&port->phy_list); | |
819 | ||
820 | if (scsi_is_sas_expander_device(parent)) { | |
821 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 KS |
822 | dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no, |
823 | rphy->scsi_target_id, port->port_identifier); | |
65c92b09 | 824 | } else |
71610f55 KS |
825 | dev_set_name(&port->dev, "port-%d:%d", shost->host_no, |
826 | port->port_identifier); | |
65c92b09 JB |
827 | |
828 | transport_setup_device(&port->dev); | |
829 | ||
830 | return port; | |
831 | } | |
832 | EXPORT_SYMBOL(sas_port_alloc); | |
833 | ||
c9fefeb2 JB |
834 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
835 | * | |
836 | * @parent: parent device | |
837 | * | |
838 | * Allocates a SAS port structure and a number to go with it. This | |
839 | * interface is really for adapters where the port number has no | |
840 | * meansing, so the sas class should manage them. It will be added to | |
841 | * the device tree below the device specified by @parent which must be | |
842 | * either a Scsi_Host or a sas_expander_device. | |
843 | * | |
844 | * Returns %NULL on error | |
845 | */ | |
846 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
847 | { | |
848 | int index; | |
849 | struct Scsi_Host *shost = dev_to_shost(parent); | |
850 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
851 | ||
852 | /* FIXME: use idr for this eventually */ | |
853 | mutex_lock(&sas_host->lock); | |
854 | if (scsi_is_sas_expander_device(parent)) { | |
855 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
856 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
857 | ||
858 | index = exp->next_port_id++; | |
859 | } else | |
860 | index = sas_host->next_port_id++; | |
861 | mutex_unlock(&sas_host->lock); | |
862 | return sas_port_alloc(parent, index); | |
863 | } | |
864 | EXPORT_SYMBOL(sas_port_alloc_num); | |
865 | ||
65c92b09 JB |
866 | /** |
867 | * sas_port_add - add a SAS port to the device hierarchy | |
65c92b09 JB |
868 | * @port: port to be added |
869 | * | |
870 | * publishes a port to the rest of the system | |
871 | */ | |
872 | int sas_port_add(struct sas_port *port) | |
873 | { | |
874 | int error; | |
875 | ||
876 | /* No phys should be added until this is made visible */ | |
877 | BUG_ON(!list_empty(&port->phy_list)); | |
878 | ||
879 | error = device_add(&port->dev); | |
880 | ||
881 | if (error) | |
882 | return error; | |
883 | ||
884 | transport_add_device(&port->dev); | |
885 | transport_configure_device(&port->dev); | |
886 | ||
887 | return 0; | |
888 | } | |
889 | EXPORT_SYMBOL(sas_port_add); | |
890 | ||
891 | /** | |
eb44820c | 892 | * sas_port_free - free a SAS PORT |
65c92b09 JB |
893 | * @port: SAS PORT to free |
894 | * | |
895 | * Frees the specified SAS PORT. | |
896 | * | |
897 | * Note: | |
898 | * This function must only be called on a PORT that has not | |
af901ca1 | 899 | * successfully been added using sas_port_add(). |
65c92b09 JB |
900 | */ |
901 | void sas_port_free(struct sas_port *port) | |
902 | { | |
903 | transport_destroy_device(&port->dev); | |
904 | put_device(&port->dev); | |
905 | } | |
906 | EXPORT_SYMBOL(sas_port_free); | |
907 | ||
908 | /** | |
eb44820c | 909 | * sas_port_delete - remove SAS PORT |
65c92b09 JB |
910 | * @port: SAS PORT to remove |
911 | * | |
912 | * Removes the specified SAS PORT. If the SAS PORT has an | |
913 | * associated phys, unlink them from the port as well. | |
914 | */ | |
915 | void sas_port_delete(struct sas_port *port) | |
916 | { | |
917 | struct device *dev = &port->dev; | |
918 | struct sas_phy *phy, *tmp_phy; | |
919 | ||
920 | if (port->rphy) { | |
921 | sas_rphy_delete(port->rphy); | |
922 | port->rphy = NULL; | |
923 | } | |
924 | ||
925 | mutex_lock(&port->phy_list_mutex); | |
926 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
927 | port_siblings) { | |
928 | sas_port_delete_link(port, phy); | |
929 | list_del_init(&phy->port_siblings); | |
930 | } | |
931 | mutex_unlock(&port->phy_list_mutex); | |
932 | ||
a0e1b6ef JB |
933 | if (port->is_backlink) { |
934 | struct device *parent = port->dev.parent; | |
935 | ||
71610f55 | 936 | sysfs_remove_link(&port->dev.kobj, dev_name(parent)); |
a0e1b6ef JB |
937 | port->is_backlink = 0; |
938 | } | |
939 | ||
65c92b09 JB |
940 | transport_remove_device(dev); |
941 | device_del(dev); | |
942 | transport_destroy_device(dev); | |
943 | put_device(dev); | |
944 | } | |
945 | EXPORT_SYMBOL(sas_port_delete); | |
946 | ||
947 | /** | |
eb44820c | 948 | * scsi_is_sas_port - check if a struct device represents a SAS port |
65c92b09 JB |
949 | * @dev: device to check |
950 | * | |
951 | * Returns: | |
952 | * %1 if the device represents a SAS Port, %0 else | |
953 | */ | |
954 | int scsi_is_sas_port(const struct device *dev) | |
955 | { | |
956 | return dev->release == sas_port_release; | |
957 | } | |
958 | EXPORT_SYMBOL(scsi_is_sas_port); | |
959 | ||
960 | /** | |
961 | * sas_port_add_phy - add another phy to a port to form a wide port | |
962 | * @port: port to add the phy to | |
963 | * @phy: phy to add | |
964 | * | |
965 | * When a port is initially created, it is empty (has no phys). All | |
966 | * ports must have at least one phy to operated, and all wide ports | |
967 | * must have at least two. The current code makes no difference | |
968 | * between ports and wide ports, but the only object that can be | |
969 | * connected to a remote device is a port, so ports must be formed on | |
970 | * all devices with phys if they're connected to anything. | |
971 | */ | |
972 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
973 | { | |
974 | mutex_lock(&port->phy_list_mutex); | |
975 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
976 | /* make sure we're already on this port */ | |
977 | struct sas_phy *tmp; | |
978 | ||
979 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
980 | if (tmp == phy) | |
981 | break; | |
982 | /* If this trips, you added a phy that was already | |
983 | * part of a different port */ | |
984 | if (unlikely(tmp != phy)) { | |
71610f55 KS |
985 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", |
986 | dev_name(&phy->dev)); | |
65c92b09 JB |
987 | BUG(); |
988 | } | |
989 | } else { | |
990 | sas_port_create_link(port, phy); | |
991 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
992 | port->num_phys++; | |
993 | } | |
994 | mutex_unlock(&port->phy_list_mutex); | |
995 | } | |
996 | EXPORT_SYMBOL(sas_port_add_phy); | |
997 | ||
998 | /** | |
999 | * sas_port_delete_phy - remove a phy from a port or wide port | |
1000 | * @port: port to remove the phy from | |
1001 | * @phy: phy to remove | |
1002 | * | |
1003 | * This operation is used for tearing down ports again. It must be | |
1004 | * done to every port or wide port before calling sas_port_delete. | |
1005 | */ | |
1006 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
1007 | { | |
1008 | mutex_lock(&port->phy_list_mutex); | |
1009 | sas_port_delete_link(port, phy); | |
1010 | list_del_init(&phy->port_siblings); | |
1011 | port->num_phys--; | |
1012 | mutex_unlock(&port->phy_list_mutex); | |
1013 | } | |
1014 | EXPORT_SYMBOL(sas_port_delete_phy); | |
1015 | ||
a0e1b6ef JB |
1016 | void sas_port_mark_backlink(struct sas_port *port) |
1017 | { | |
21434966 | 1018 | int res; |
a0e1b6ef JB |
1019 | struct device *parent = port->dev.parent->parent->parent; |
1020 | ||
1021 | if (port->is_backlink) | |
1022 | return; | |
1023 | port->is_backlink = 1; | |
21434966 | 1024 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
71610f55 | 1025 | dev_name(parent)); |
21434966 DW |
1026 | if (res) |
1027 | goto err; | |
1028 | return; | |
1029 | err: | |
1030 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
cadbd4a5 | 1031 | __func__, res); |
a0e1b6ef JB |
1032 | |
1033 | } | |
1034 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
1035 | ||
c7ebbbce CH |
1036 | /* |
1037 | * SAS remote PHY attributes. | |
1038 | */ | |
1039 | ||
1040 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
1041 | static ssize_t \ | |
ee959b00 TJ |
1042 | show_sas_rphy_##name(struct device *dev, \ |
1043 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1044 | { \ |
ee959b00 | 1045 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1046 | \ |
1047 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
1048 | } | |
1049 | ||
1050 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
1051 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1052 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1053 | show_sas_rphy_##name, NULL) |
1054 | ||
1055 | #define sas_rphy_show_protocol(field, name) \ | |
1056 | static ssize_t \ | |
ee959b00 TJ |
1057 | show_sas_rphy_##name(struct device *dev, \ |
1058 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1059 | { \ |
ee959b00 | 1060 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1061 | \ |
1062 | if (!rphy->field) \ | |
1063 | return snprintf(buf, 20, "none\n"); \ | |
1064 | return get_sas_protocol_names(rphy->field, buf); \ | |
1065 | } | |
1066 | ||
1067 | #define sas_rphy_protocol_attr(field, name) \ | |
1068 | sas_rphy_show_protocol(field, name) \ | |
ee959b00 | 1069 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1070 | show_sas_rphy_##name, NULL) |
1071 | ||
1072 | static ssize_t | |
ee959b00 TJ |
1073 | show_sas_rphy_device_type(struct device *dev, |
1074 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 1075 | { |
ee959b00 | 1076 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
c7ebbbce CH |
1077 | |
1078 | if (!rphy->identify.device_type) | |
1079 | return snprintf(buf, 20, "none\n"); | |
1080 | return get_sas_device_type_names( | |
1081 | rphy->identify.device_type, buf); | |
1082 | } | |
1083 | ||
ee959b00 | 1084 | static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO, |
c7ebbbce CH |
1085 | show_sas_rphy_device_type, NULL); |
1086 | ||
a0125641 | 1087 | static ssize_t |
ee959b00 TJ |
1088 | show_sas_rphy_enclosure_identifier(struct device *dev, |
1089 | struct device_attribute *attr, char *buf) | |
a0125641 | 1090 | { |
ee959b00 | 1091 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1092 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1093 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1094 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1095 | u64 identifier; | |
1096 | int error; | |
1097 | ||
1098 | /* | |
1099 | * Only devices behind an expander are supported, because the | |
1100 | * enclosure identifier is a SMP feature. | |
1101 | */ | |
f4ad7b58 | 1102 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1103 | return -EINVAL; |
1104 | ||
1105 | error = i->f->get_enclosure_identifier(rphy, &identifier); | |
1106 | if (error) | |
1107 | return error; | |
1108 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
1109 | } | |
1110 | ||
ee959b00 | 1111 | static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, |
a0125641 CH |
1112 | show_sas_rphy_enclosure_identifier, NULL); |
1113 | ||
1114 | static ssize_t | |
ee959b00 TJ |
1115 | show_sas_rphy_bay_identifier(struct device *dev, |
1116 | struct device_attribute *attr, char *buf) | |
a0125641 | 1117 | { |
ee959b00 | 1118 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1119 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1120 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1121 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1122 | int val; | |
1123 | ||
f4ad7b58 | 1124 | if (scsi_is_sas_phy_local(phy)) |
a0125641 CH |
1125 | return -EINVAL; |
1126 | ||
1127 | val = i->f->get_bay_identifier(rphy); | |
1128 | if (val < 0) | |
1129 | return val; | |
1130 | return sprintf(buf, "%d\n", val); | |
1131 | } | |
1132 | ||
ee959b00 | 1133 | static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, |
a0125641 CH |
1134 | show_sas_rphy_bay_identifier, NULL); |
1135 | ||
c7ebbbce CH |
1136 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
1137 | initiator_port_protocols); | |
1138 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
1139 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
1140 | unsigned long long); | |
1141 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
1142 | ||
42ab0360 JB |
1143 | /* only need 8 bytes of data plus header (4 or 8) */ |
1144 | #define BUF_SIZE 64 | |
1145 | ||
1146 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1147 | { | |
1148 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
1149 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
1150 | struct sas_end_device *rdev; | |
1151 | struct scsi_mode_data mode_data; | |
1152 | int res, error; | |
1153 | ||
1154 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
1155 | ||
1156 | rdev = rphy_to_end_device(rphy); | |
1157 | ||
1158 | if (!buffer) | |
1159 | return -ENOMEM; | |
1160 | ||
1161 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1162 | &mode_data, NULL); | |
1163 | ||
1164 | error = -EINVAL; | |
1165 | if (!scsi_status_is_good(res)) | |
1166 | goto out; | |
1167 | ||
1168 | msdata = buffer + mode_data.header_length + | |
1169 | mode_data.block_descriptor_length; | |
1170 | ||
1171 | if (msdata - buffer > BUF_SIZE - 8) | |
1172 | goto out; | |
1173 | ||
1174 | error = 0; | |
1175 | ||
1176 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1177 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1178 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1179 | ||
1180 | out: | |
1181 | kfree(buffer); | |
1182 | return error; | |
1183 | } | |
1184 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1185 | ||
79cb1819 JB |
1186 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1187 | "sas_end_device", NULL, NULL, NULL); | |
1188 | ||
42ab0360 JB |
1189 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1190 | static ssize_t \ | |
ee959b00 TJ |
1191 | show_sas_end_dev_##name(struct device *dev, \ |
1192 | struct device_attribute *attr, char *buf) \ | |
42ab0360 | 1193 | { \ |
ee959b00 | 1194 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
42ab0360 JB |
1195 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ |
1196 | \ | |
1197 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1198 | } | |
1199 | ||
1200 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1201 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1202 | static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ |
42ab0360 JB |
1203 | show_sas_end_dev_##name, NULL) |
1204 | ||
1205 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1206 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1207 | "%d\n", int); | |
1208 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1209 | "%d\n", int); | |
1210 | ||
79cb1819 JB |
1211 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1212 | "sas_expander", NULL, NULL, NULL); | |
1213 | ||
1214 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1215 | static ssize_t \ | |
ee959b00 TJ |
1216 | show_sas_expander_##name(struct device *dev, \ |
1217 | struct device_attribute *attr, char *buf) \ | |
79cb1819 | 1218 | { \ |
ee959b00 | 1219 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
79cb1819 JB |
1220 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ |
1221 | \ | |
1222 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1223 | } | |
1224 | ||
1225 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1226 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1227 | static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \ |
79cb1819 JB |
1228 | show_sas_expander_##name, NULL) |
1229 | ||
1230 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1231 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1232 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1233 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1234 | "%s\n", char *); | |
1235 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1236 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1237 | unsigned int); | |
1238 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1239 | |
c7ebbbce | 1240 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1241 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1242 | |
1243 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1244 | { | |
1245 | struct Scsi_Host *shost; | |
1246 | struct sas_internal *i; | |
1247 | ||
1248 | if (!scsi_is_sas_rphy(dev)) | |
1249 | return 0; | |
1250 | shost = dev_to_shost(dev->parent->parent); | |
1251 | ||
1252 | if (!shost->transportt) | |
1253 | return 0; | |
1254 | if (shost->transportt->host_attrs.ac.class != | |
1255 | &sas_host_class.class) | |
1256 | return 0; | |
1257 | ||
1258 | i = to_sas_internal(shost->transportt); | |
1259 | return &i->rphy_attr_cont.ac == cont; | |
1260 | } | |
1261 | ||
42ab0360 JB |
1262 | static int sas_end_dev_match(struct attribute_container *cont, |
1263 | struct device *dev) | |
1264 | { | |
1265 | struct Scsi_Host *shost; | |
1266 | struct sas_internal *i; | |
1267 | struct sas_rphy *rphy; | |
1268 | ||
1269 | if (!scsi_is_sas_rphy(dev)) | |
1270 | return 0; | |
1271 | shost = dev_to_shost(dev->parent->parent); | |
1272 | rphy = dev_to_rphy(dev); | |
1273 | ||
1274 | if (!shost->transportt) | |
1275 | return 0; | |
1276 | if (shost->transportt->host_attrs.ac.class != | |
1277 | &sas_host_class.class) | |
1278 | return 0; | |
1279 | ||
1280 | i = to_sas_internal(shost->transportt); | |
1281 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1282 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1283 | } |
1284 | ||
79cb1819 JB |
1285 | static int sas_expander_match(struct attribute_container *cont, |
1286 | struct device *dev) | |
1287 | { | |
1288 | struct Scsi_Host *shost; | |
1289 | struct sas_internal *i; | |
1290 | struct sas_rphy *rphy; | |
1291 | ||
1292 | if (!scsi_is_sas_rphy(dev)) | |
1293 | return 0; | |
1294 | shost = dev_to_shost(dev->parent->parent); | |
1295 | rphy = dev_to_rphy(dev); | |
1296 | ||
1297 | if (!shost->transportt) | |
1298 | return 0; | |
1299 | if (shost->transportt->host_attrs.ac.class != | |
1300 | &sas_host_class.class) | |
1301 | return 0; | |
1302 | ||
1303 | i = to_sas_internal(shost->transportt); | |
1304 | return &i->expander_attr_cont.ac == cont && | |
1305 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1306 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1307 | } |
1308 | ||
2f8600df | 1309 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1310 | { |
1311 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1312 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce | 1313 | |
93c20a59 FT |
1314 | if (rphy->q) |
1315 | blk_cleanup_queue(rphy->q); | |
1316 | ||
c7ebbbce | 1317 | put_device(dev->parent); |
2f8600df | 1318 | kfree(edev); |
c7ebbbce CH |
1319 | } |
1320 | ||
2f8600df | 1321 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1322 | { |
2f8600df JB |
1323 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1324 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1325 | |
93c20a59 FT |
1326 | if (rphy->q) |
1327 | blk_cleanup_queue(rphy->q); | |
1328 | ||
2f8600df JB |
1329 | put_device(dev->parent); |
1330 | kfree(edev); | |
c7ebbbce | 1331 | } |
c7ebbbce | 1332 | |
c5943d36 JB |
1333 | /** |
1334 | * sas_rphy_initialize - common rphy intialization | |
1335 | * @rphy: rphy to initialise | |
1336 | * | |
1337 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1338 | * initialise the common rphy component of each. | |
1339 | */ | |
1340 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1341 | { | |
1342 | INIT_LIST_HEAD(&rphy->list); | |
1343 | } | |
1344 | ||
42ab0360 JB |
1345 | /** |
1346 | * sas_end_device_alloc - allocate an rphy for an end device | |
eb44820c | 1347 | * @parent: which port |
42ab0360 JB |
1348 | * |
1349 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1350 | * | |
1351 | * Returns: | |
1352 | * SAS PHY allocated or %NULL if the allocation failed. | |
1353 | */ | |
65c92b09 | 1354 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1355 | { |
1356 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1357 | struct sas_end_device *rdev; | |
1358 | ||
1359 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1360 | if (!rdev) { | |
42ab0360 JB |
1361 | return NULL; |
1362 | } | |
1363 | ||
1364 | device_initialize(&rdev->rphy.dev); | |
1365 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1366 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1367 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1368 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
71610f55 KS |
1369 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d", |
1370 | shost->host_no, rphy->scsi_target_id, | |
1371 | parent->port_identifier); | |
65c92b09 | 1372 | } else |
71610f55 KS |
1373 | dev_set_name(&rdev->rphy.dev, "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); | |
71610f55 KS |
1414 | dev_set_name(&rdev->rphy.dev, "expander-%d:%d", |
1415 | shost->host_no, rdev->rphy.scsi_target_id); | |
79cb1819 | 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 | 1447 | if (sas_bsg_initialize(shost, rphy)) |
71610f55 | 1448 | printk("fail to a bsg device %s\n", dev_name(&rphy->dev)); |
39dca558 | 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 | |
af901ca1 | 1479 | * PHY that has not successfully 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 | ||
c7ebbbce | 1694 | count = 0; |
65c92b09 JB |
1695 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1696 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1697 | SETUP_PHY_ATTRIBUTE(device_type); | |
1698 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1699 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1700 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1701 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1702 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1703 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1704 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1705 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1706 | |
1707 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1708 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1709 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1710 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1711 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1712 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1713 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1714 | i->phy_attrs[count] = NULL; |
1715 | ||
65c92b09 JB |
1716 | count = 0; |
1717 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1718 | i->port_attrs[count] = NULL; | |
1719 | ||
c7ebbbce CH |
1720 | count = 0; |
1721 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1722 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1723 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1724 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1725 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
dd9fbb52 JB |
1726 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1727 | get_enclosure_identifier); | |
1728 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1729 | get_bay_identifier); | |
c7ebbbce CH |
1730 | i->rphy_attrs[count] = NULL; |
1731 | ||
42ab0360 JB |
1732 | count = 0; |
1733 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1734 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1735 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
1736 | i->end_dev_attrs[count] = NULL; | |
1737 | ||
79cb1819 JB |
1738 | count = 0; |
1739 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1740 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1741 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1742 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1743 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1744 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1745 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1746 | i->expander_attrs[count] = NULL; | |
1747 | ||
c7ebbbce CH |
1748 | return &i->t; |
1749 | } | |
1750 | EXPORT_SYMBOL(sas_attach_transport); | |
1751 | ||
1752 | /** | |
eb44820c | 1753 | * sas_release_transport - release SAS transport template instance |
c7ebbbce CH |
1754 | * @t: transport template instance |
1755 | */ | |
1756 | void sas_release_transport(struct scsi_transport_template *t) | |
1757 | { | |
1758 | struct sas_internal *i = to_sas_internal(t); | |
1759 | ||
1760 | transport_container_unregister(&i->t.host_attrs); | |
1761 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1762 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1763 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1764 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1765 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1766 | |
1767 | kfree(i); | |
1768 | } | |
1769 | EXPORT_SYMBOL(sas_release_transport); | |
1770 | ||
1771 | static __init int sas_transport_init(void) | |
1772 | { | |
1773 | int error; | |
1774 | ||
1775 | error = transport_class_register(&sas_host_class); | |
1776 | if (error) | |
1777 | goto out; | |
1778 | error = transport_class_register(&sas_phy_class); | |
1779 | if (error) | |
1780 | goto out_unregister_transport; | |
65c92b09 | 1781 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1782 | if (error) |
1783 | goto out_unregister_phy; | |
65c92b09 JB |
1784 | error = transport_class_register(&sas_rphy_class); |
1785 | if (error) | |
1786 | goto out_unregister_port; | |
42ab0360 JB |
1787 | error = transport_class_register(&sas_end_dev_class); |
1788 | if (error) | |
1789 | goto out_unregister_rphy; | |
79cb1819 JB |
1790 | error = transport_class_register(&sas_expander_class); |
1791 | if (error) | |
1792 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1793 | |
1794 | return 0; | |
1795 | ||
79cb1819 JB |
1796 | out_unregister_end_dev: |
1797 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1798 | out_unregister_rphy: |
1799 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1800 | out_unregister_port: |
1801 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1802 | out_unregister_phy: |
1803 | transport_class_unregister(&sas_phy_class); | |
1804 | out_unregister_transport: | |
1805 | transport_class_unregister(&sas_host_class); | |
1806 | out: | |
1807 | return error; | |
1808 | ||
1809 | } | |
1810 | ||
1811 | static void __exit sas_transport_exit(void) | |
1812 | { | |
1813 | transport_class_unregister(&sas_host_class); | |
1814 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1815 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1816 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1817 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1818 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1819 | } |
1820 | ||
1821 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1822 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
1823 | MODULE_LICENSE("GPL"); |
1824 | ||
1825 | module_init(sas_transport_init); | |
1826 | module_exit(sas_transport_exit); |