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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> |
ca18d6f7 | 36 | #include <scsi/scsi_cmnd.h> |
82ed4db4 | 37 | #include <scsi/scsi_request.h> |
c7ebbbce CH |
38 | #include <scsi/scsi_device.h> |
39 | #include <scsi/scsi_host.h> | |
40 | #include <scsi/scsi_transport.h> | |
41 | #include <scsi/scsi_transport_sas.h> | |
42 | ||
d6159c17 | 43 | #include "scsi_sas_internal.h" |
c7ebbbce CH |
44 | struct sas_host_attrs { |
45 | struct list_head rphy_list; | |
e02f3f59 | 46 | struct mutex lock; |
b6aff669 | 47 | struct request_queue *q; |
c7ebbbce | 48 | u32 next_target_id; |
79cb1819 | 49 | u32 next_expander_id; |
c9fefeb2 | 50 | int next_port_id; |
c7ebbbce CH |
51 | }; |
52 | #define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data) | |
53 | ||
54 | ||
55 | /* | |
56 | * Hack to allow attributes of the same name in different objects. | |
57 | */ | |
ee959b00 TJ |
58 | #define SAS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
59 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
c7ebbbce CH |
60 | __ATTR(_name,_mode,_show,_store) |
61 | ||
62 | ||
63 | /* | |
64 | * Pretty printing helpers | |
65 | */ | |
66 | ||
67 | #define sas_bitfield_name_match(title, table) \ | |
68 | static ssize_t \ | |
69 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
70 | { \ | |
71 | char *prefix = ""; \ | |
72 | ssize_t len = 0; \ | |
73 | int i; \ | |
74 | \ | |
6391a113 | 75 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
76 | if (table[i].value & table_key) { \ |
77 | len += sprintf(buf + len, "%s%s", \ | |
78 | prefix, table[i].name); \ | |
79 | prefix = ", "; \ | |
80 | } \ | |
81 | } \ | |
82 | len += sprintf(buf + len, "\n"); \ | |
83 | return len; \ | |
84 | } | |
85 | ||
d24e1eeb JB |
86 | #define sas_bitfield_name_set(title, table) \ |
87 | static ssize_t \ | |
88 | set_sas_##title##_names(u32 *table_key, const char *buf) \ | |
89 | { \ | |
90 | ssize_t len = 0; \ | |
91 | int i; \ | |
92 | \ | |
93 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ | |
94 | len = strlen(table[i].name); \ | |
95 | if (strncmp(buf, table[i].name, len) == 0 && \ | |
96 | (buf[len] == '\n' || buf[len] == '\0')) { \ | |
97 | *table_key = table[i].value; \ | |
98 | return 0; \ | |
99 | } \ | |
100 | } \ | |
101 | return -EINVAL; \ | |
102 | } | |
103 | ||
c7ebbbce CH |
104 | #define sas_bitfield_name_search(title, table) \ |
105 | static ssize_t \ | |
106 | get_sas_##title##_names(u32 table_key, char *buf) \ | |
107 | { \ | |
108 | ssize_t len = 0; \ | |
109 | int i; \ | |
110 | \ | |
6391a113 | 111 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
c7ebbbce CH |
112 | if (table[i].value == table_key) { \ |
113 | len += sprintf(buf + len, "%s", \ | |
114 | table[i].name); \ | |
115 | break; \ | |
116 | } \ | |
117 | } \ | |
118 | len += sprintf(buf + len, "\n"); \ | |
119 | return len; \ | |
120 | } | |
121 | ||
122 | static struct { | |
123 | u32 value; | |
124 | char *name; | |
125 | } sas_device_type_names[] = { | |
126 | { SAS_PHY_UNUSED, "unused" }, | |
127 | { SAS_END_DEVICE, "end device" }, | |
128 | { SAS_EDGE_EXPANDER_DEVICE, "edge expander" }, | |
129 | { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" }, | |
130 | }; | |
131 | sas_bitfield_name_search(device_type, sas_device_type_names) | |
132 | ||
133 | ||
134 | static struct { | |
135 | u32 value; | |
136 | char *name; | |
137 | } sas_protocol_names[] = { | |
138 | { SAS_PROTOCOL_SATA, "sata" }, | |
139 | { SAS_PROTOCOL_SMP, "smp" }, | |
140 | { SAS_PROTOCOL_STP, "stp" }, | |
141 | { SAS_PROTOCOL_SSP, "ssp" }, | |
142 | }; | |
143 | sas_bitfield_name_match(protocol, sas_protocol_names) | |
144 | ||
145 | static struct { | |
146 | u32 value; | |
147 | char *name; | |
148 | } sas_linkspeed_names[] = { | |
149 | { SAS_LINK_RATE_UNKNOWN, "Unknown" }, | |
150 | { SAS_PHY_DISABLED, "Phy disabled" }, | |
151 | { SAS_LINK_RATE_FAILED, "Link Rate failed" }, | |
152 | { SAS_SATA_SPINUP_HOLD, "Spin-up hold" }, | |
153 | { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" }, | |
154 | { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" }, | |
7e6dff62 | 155 | { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" }, |
d84fd392 | 156 | { SAS_LINK_RATE_12_0_GBPS, "12.0 Gbit" }, |
c7ebbbce CH |
157 | }; |
158 | sas_bitfield_name_search(linkspeed, sas_linkspeed_names) | |
d24e1eeb | 159 | sas_bitfield_name_set(linkspeed, sas_linkspeed_names) |
c7ebbbce | 160 | |
0f88009d JB |
161 | static struct sas_end_device *sas_sdev_to_rdev(struct scsi_device *sdev) |
162 | { | |
163 | struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target); | |
164 | struct sas_end_device *rdev; | |
165 | ||
166 | BUG_ON(rphy->identify.device_type != SAS_END_DEVICE); | |
167 | ||
168 | rdev = rphy_to_end_device(rphy); | |
169 | return rdev; | |
170 | } | |
171 | ||
651a0136 | 172 | static int sas_smp_dispatch(struct bsg_job *job) |
7aa68e80 | 173 | { |
651a0136 CH |
174 | struct Scsi_Host *shost = dev_to_shost(job->dev); |
175 | struct sas_rphy *rphy = NULL; | |
7aa68e80 | 176 | |
651a0136 CH |
177 | if (!scsi_is_host_device(job->dev)) |
178 | rphy = dev_to_rphy(job->dev); | |
7aa68e80 | 179 | |
07f5d563 | 180 | if (!job->reply_payload.payload_len) { |
651a0136 CH |
181 | dev_warn(job->dev, "space for a smp response is missing\n"); |
182 | bsg_job_done(job, -EINVAL, 0); | |
183 | return 0; | |
7aa68e80 | 184 | } |
7aa68e80 | 185 | |
651a0136 CH |
186 | to_sas_internal(shost->transportt)->f->smp_handler(job, shost, rphy); |
187 | return 0; | |
7aa68e80 FT |
188 | } |
189 | ||
93c20a59 FT |
190 | static void sas_host_release(struct device *dev) |
191 | { | |
192 | struct Scsi_Host *shost = dev_to_shost(dev); | |
193 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
194 | struct request_queue *q = sas_host->q; | |
195 | ||
196 | if (q) | |
197 | blk_cleanup_queue(q); | |
198 | } | |
199 | ||
39dca558 | 200 | static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) |
7aa68e80 FT |
201 | { |
202 | struct request_queue *q; | |
7aa68e80 FT |
203 | |
204 | if (!to_sas_internal(shost->transportt)->f->smp_handler) { | |
205 | printk("%s can't handle SMP requests\n", shost->hostt->name); | |
206 | return 0; | |
207 | } | |
208 | ||
39dca558 | 209 | if (rphy) { |
651a0136 CH |
210 | q = bsg_setup_queue(&rphy->dev, dev_name(&rphy->dev), |
211 | sas_smp_dispatch, 0, NULL); | |
212 | if (IS_ERR(q)) | |
213 | return PTR_ERR(q); | |
214 | rphy->q = q; | |
39dca558 | 215 | } else { |
651a0136 CH |
216 | char name[20]; |
217 | ||
218 | snprintf(name, sizeof(name), "sas_host%d", shost->host_no); | |
219 | q = bsg_setup_queue(&shost->shost_gendev, name, | |
220 | sas_smp_dispatch, 0, sas_host_release); | |
221 | if (IS_ERR(q)) | |
222 | return PTR_ERR(q); | |
223 | to_sas_host_attrs(shost)->q = q; | |
39dca558 | 224 | } |
7aa68e80 | 225 | |
0bf6595e CH |
226 | /* |
227 | * by default assume old behaviour and bounce for any highmem page | |
228 | */ | |
229 | blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH); | |
75ad23bc | 230 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); |
9efc160f | 231 | queue_flag_set_unlocked(QUEUE_FLAG_SCSI_PASSTHROUGH, q); |
7aa68e80 | 232 | return 0; |
b6aff669 JB |
233 | } |
234 | ||
c7ebbbce CH |
235 | /* |
236 | * SAS host attributes | |
237 | */ | |
238 | ||
37be6eeb | 239 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 240 | struct device *cdev) |
c7ebbbce CH |
241 | { |
242 | struct Scsi_Host *shost = dev_to_shost(dev); | |
243 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
244 | ||
245 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 246 | mutex_init(&sas_host->lock); |
c7ebbbce | 247 | sas_host->next_target_id = 0; |
79cb1819 | 248 | sas_host->next_expander_id = 0; |
c9fefeb2 | 249 | sas_host->next_port_id = 0; |
7aa68e80 | 250 | |
39dca558 | 251 | if (sas_bsg_initialize(shost, NULL)) |
7aa68e80 FT |
252 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", |
253 | shost->host_no); | |
254 | ||
c7ebbbce CH |
255 | return 0; |
256 | } | |
257 | ||
b6aff669 | 258 | static int sas_host_remove(struct transport_container *tc, struct device *dev, |
ee959b00 | 259 | struct device *cdev) |
b6aff669 JB |
260 | { |
261 | struct Scsi_Host *shost = dev_to_shost(dev); | |
651a0136 | 262 | struct request_queue *q = to_sas_host_attrs(shost)->q; |
b6aff669 | 263 | |
651a0136 CH |
264 | if (q) |
265 | bsg_unregister_queue(q); | |
b6aff669 JB |
266 | return 0; |
267 | } | |
268 | ||
c7ebbbce | 269 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
b6aff669 | 270 | "sas_host", sas_host_setup, sas_host_remove, NULL); |
c7ebbbce CH |
271 | |
272 | static int sas_host_match(struct attribute_container *cont, | |
273 | struct device *dev) | |
274 | { | |
275 | struct Scsi_Host *shost; | |
276 | struct sas_internal *i; | |
277 | ||
278 | if (!scsi_is_host_device(dev)) | |
279 | return 0; | |
280 | shost = dev_to_shost(dev); | |
281 | ||
282 | if (!shost->transportt) | |
283 | return 0; | |
284 | if (shost->transportt->host_attrs.ac.class != | |
285 | &sas_host_class.class) | |
286 | return 0; | |
287 | ||
288 | i = to_sas_internal(shost->transportt); | |
289 | return &i->t.host_attrs.ac == cont; | |
290 | } | |
291 | ||
292 | static int do_sas_phy_delete(struct device *dev, void *data) | |
293 | { | |
65c92b09 JB |
294 | int pass = (int)(unsigned long)data; |
295 | ||
296 | if (pass == 0 && scsi_is_sas_port(dev)) | |
297 | sas_port_delete(dev_to_sas_port(dev)); | |
298 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
299 | sas_phy_delete(dev_to_phy(dev)); |
300 | return 0; | |
301 | } | |
302 | ||
65c92b09 | 303 | /** |
eb44820c | 304 | * sas_remove_children - tear down a devices SAS data structures |
65c92b09 JB |
305 | * @dev: device belonging to the sas object |
306 | * | |
307 | * Removes all SAS PHYs and remote PHYs for a given object | |
308 | */ | |
309 | void sas_remove_children(struct device *dev) | |
310 | { | |
311 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
312 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
313 | } | |
314 | EXPORT_SYMBOL(sas_remove_children); | |
315 | ||
c7ebbbce | 316 | /** |
eb44820c | 317 | * sas_remove_host - tear down a Scsi_Host's SAS data structures |
c7ebbbce CH |
318 | * @shost: Scsi Host that is torn down |
319 | * | |
c5ce0abe JT |
320 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host and remove the |
321 | * Scsi_Host as well. | |
322 | * | |
323 | * Note: Do not call scsi_remove_host() on the Scsi_Host any more, as it is | |
324 | * already removed. | |
c7ebbbce CH |
325 | */ |
326 | void sas_remove_host(struct Scsi_Host *shost) | |
327 | { | |
65c92b09 | 328 | sas_remove_children(&shost->shost_gendev); |
c5ce0abe | 329 | scsi_remove_host(shost); |
c7ebbbce CH |
330 | } |
331 | EXPORT_SYMBOL(sas_remove_host); | |
332 | ||
bcf508c1 JB |
333 | /** |
334 | * sas_get_address - return the SAS address of the device | |
335 | * @sdev: scsi device | |
336 | * | |
337 | * Returns the SAS address of the scsi device | |
338 | */ | |
339 | u64 sas_get_address(struct scsi_device *sdev) | |
340 | { | |
341 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
342 | ||
343 | return rdev->rphy.identify.sas_address; | |
344 | } | |
345 | EXPORT_SYMBOL(sas_get_address); | |
346 | ||
0f88009d JB |
347 | /** |
348 | * sas_tlr_supported - checking TLR bit in vpd 0x90 | |
349 | * @sdev: scsi device struct | |
350 | * | |
351 | * Check Transport Layer Retries are supported or not. | |
352 | * If vpd page 0x90 is present, TRL is supported. | |
353 | * | |
354 | */ | |
355 | unsigned int | |
356 | sas_tlr_supported(struct scsi_device *sdev) | |
357 | { | |
358 | const int vpd_len = 32; | |
359 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
360 | char *buffer = kzalloc(vpd_len, GFP_KERNEL); | |
361 | int ret = 0; | |
362 | ||
e1779b4f BVA |
363 | if (!buffer) |
364 | goto out; | |
365 | ||
0f88009d JB |
366 | if (scsi_get_vpd_page(sdev, 0x90, buffer, vpd_len)) |
367 | goto out; | |
368 | ||
369 | /* | |
370 | * Magic numbers: the VPD Protocol page (0x90) | |
371 | * has a 4 byte header and then one entry per device port | |
372 | * the TLR bit is at offset 8 on each port entry | |
373 | * if we take the first port, that's at total offset 12 | |
374 | */ | |
375 | ret = buffer[12] & 0x01; | |
376 | ||
377 | out: | |
378 | kfree(buffer); | |
379 | rdev->tlr_supported = ret; | |
380 | return ret; | |
381 | ||
382 | } | |
383 | EXPORT_SYMBOL_GPL(sas_tlr_supported); | |
384 | ||
385 | /** | |
386 | * sas_disable_tlr - setting TLR flags | |
387 | * @sdev: scsi device struct | |
388 | * | |
389 | * Seting tlr_enabled flag to 0. | |
390 | * | |
391 | */ | |
392 | void | |
393 | sas_disable_tlr(struct scsi_device *sdev) | |
394 | { | |
395 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
396 | ||
397 | rdev->tlr_enabled = 0; | |
398 | } | |
399 | EXPORT_SYMBOL_GPL(sas_disable_tlr); | |
400 | ||
401 | /** | |
402 | * sas_enable_tlr - setting TLR flags | |
403 | * @sdev: scsi device struct | |
404 | * | |
405 | * Seting tlr_enabled flag 1. | |
406 | * | |
407 | */ | |
408 | void sas_enable_tlr(struct scsi_device *sdev) | |
409 | { | |
410 | unsigned int tlr_supported = 0; | |
411 | tlr_supported = sas_tlr_supported(sdev); | |
412 | ||
413 | if (tlr_supported) { | |
414 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
415 | ||
416 | rdev->tlr_enabled = 1; | |
417 | } | |
418 | ||
419 | return; | |
420 | } | |
421 | EXPORT_SYMBOL_GPL(sas_enable_tlr); | |
422 | ||
423 | unsigned int sas_is_tlr_enabled(struct scsi_device *sdev) | |
424 | { | |
425 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
426 | return rdev->tlr_enabled; | |
427 | } | |
428 | EXPORT_SYMBOL_GPL(sas_is_tlr_enabled); | |
c7ebbbce CH |
429 | |
430 | /* | |
65c92b09 | 431 | * SAS Phy attributes |
c7ebbbce CH |
432 | */ |
433 | ||
434 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
435 | static ssize_t \ | |
ee959b00 TJ |
436 | show_sas_phy_##name(struct device *dev, \ |
437 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 438 | { \ |
ee959b00 | 439 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
440 | \ |
441 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
442 | } | |
443 | ||
444 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
445 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 446 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
447 | |
448 | #define sas_phy_show_protocol(field, name) \ | |
449 | static ssize_t \ | |
ee959b00 TJ |
450 | show_sas_phy_##name(struct device *dev, \ |
451 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 452 | { \ |
ee959b00 | 453 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
454 | \ |
455 | if (!phy->field) \ | |
456 | return snprintf(buf, 20, "none\n"); \ | |
457 | return get_sas_protocol_names(phy->field, buf); \ | |
458 | } | |
459 | ||
460 | #define sas_phy_protocol_attr(field, name) \ | |
461 | sas_phy_show_protocol(field, name) \ | |
ee959b00 | 462 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
463 | |
464 | #define sas_phy_show_linkspeed(field) \ | |
465 | static ssize_t \ | |
ee959b00 TJ |
466 | show_sas_phy_##field(struct device *dev, \ |
467 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 468 | { \ |
ee959b00 | 469 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
470 | \ |
471 | return get_sas_linkspeed_names(phy->field, buf); \ | |
472 | } | |
473 | ||
d24e1eeb JB |
474 | /* Fudge to tell if we're minimum or maximum */ |
475 | #define sas_phy_store_linkspeed(field) \ | |
476 | static ssize_t \ | |
ee959b00 TJ |
477 | store_sas_phy_##field(struct device *dev, \ |
478 | struct device_attribute *attr, \ | |
479 | const char *buf, size_t count) \ | |
d24e1eeb | 480 | { \ |
ee959b00 | 481 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
d24e1eeb JB |
482 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
483 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
484 | u32 value; \ | |
485 | struct sas_phy_linkrates rates = {0}; \ | |
486 | int error; \ | |
487 | \ | |
488 | error = set_sas_linkspeed_names(&value, buf); \ | |
489 | if (error) \ | |
490 | return error; \ | |
491 | rates.field = value; \ | |
492 | error = i->f->set_phy_speed(phy, &rates); \ | |
493 | \ | |
494 | return error ? error : count; \ | |
495 | } | |
496 | ||
497 | #define sas_phy_linkspeed_rw_attr(field) \ | |
498 | sas_phy_show_linkspeed(field) \ | |
499 | sas_phy_store_linkspeed(field) \ | |
ee959b00 | 500 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ |
d24e1eeb JB |
501 | store_sas_phy_##field) |
502 | ||
c7ebbbce CH |
503 | #define sas_phy_linkspeed_attr(field) \ |
504 | sas_phy_show_linkspeed(field) \ | |
ee959b00 | 505 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c7ebbbce | 506 | |
d24e1eeb | 507 | |
c3ee74c4 CH |
508 | #define sas_phy_show_linkerror(field) \ |
509 | static ssize_t \ | |
ee959b00 TJ |
510 | show_sas_phy_##field(struct device *dev, \ |
511 | struct device_attribute *attr, char *buf) \ | |
c3ee74c4 | 512 | { \ |
ee959b00 | 513 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c3ee74c4 CH |
514 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
515 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
516 | int error; \ | |
517 | \ | |
dd9fbb52 | 518 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
519 | if (error) \ |
520 | return error; \ | |
521 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
522 | } | |
523 | ||
524 | #define sas_phy_linkerror_attr(field) \ | |
525 | sas_phy_show_linkerror(field) \ | |
ee959b00 | 526 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c3ee74c4 CH |
527 | |
528 | ||
c7ebbbce | 529 | static ssize_t |
ee959b00 TJ |
530 | show_sas_device_type(struct device *dev, |
531 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 532 | { |
ee959b00 | 533 | struct sas_phy *phy = transport_class_to_phy(dev); |
c7ebbbce CH |
534 | |
535 | if (!phy->identify.device_type) | |
536 | return snprintf(buf, 20, "none\n"); | |
537 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
538 | } | |
ee959b00 | 539 | static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
c7ebbbce | 540 | |
ee959b00 | 541 | static ssize_t do_sas_phy_enable(struct device *dev, |
acbf167d DW |
542 | size_t count, int enable) |
543 | { | |
ee959b00 | 544 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
545 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
546 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
547 | int error; | |
548 | ||
549 | error = i->f->phy_enable(phy, enable); | |
550 | if (error) | |
551 | return error; | |
552 | phy->enabled = enable; | |
553 | return count; | |
554 | }; | |
555 | ||
ee959b00 TJ |
556 | static ssize_t |
557 | store_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
558 | const char *buf, size_t count) | |
acbf167d DW |
559 | { |
560 | if (count < 1) | |
561 | return -EINVAL; | |
562 | ||
563 | switch (buf[0]) { | |
564 | case '0': | |
ee959b00 | 565 | do_sas_phy_enable(dev, count, 0); |
acbf167d DW |
566 | break; |
567 | case '1': | |
ee959b00 | 568 | do_sas_phy_enable(dev, count, 1); |
acbf167d DW |
569 | break; |
570 | default: | |
571 | return -EINVAL; | |
572 | } | |
573 | ||
574 | return count; | |
575 | } | |
576 | ||
ee959b00 TJ |
577 | static ssize_t |
578 | show_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
579 | char *buf) | |
acbf167d | 580 | { |
ee959b00 | 581 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
582 | |
583 | return snprintf(buf, 20, "%d", phy->enabled); | |
584 | } | |
585 | ||
ee959b00 | 586 | static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, |
acbf167d DW |
587 | store_sas_phy_enable); |
588 | ||
ee959b00 TJ |
589 | static ssize_t |
590 | do_sas_phy_reset(struct device *dev, size_t count, int hard_reset) | |
07ba3a95 | 591 | { |
ee959b00 | 592 | struct sas_phy *phy = transport_class_to_phy(dev); |
07ba3a95 CH |
593 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
594 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
595 | int error; | |
596 | ||
07ba3a95 CH |
597 | error = i->f->phy_reset(phy, hard_reset); |
598 | if (error) | |
599 | return error; | |
16d3db1b | 600 | phy->enabled = 1; |
07ba3a95 CH |
601 | return count; |
602 | }; | |
603 | ||
ee959b00 TJ |
604 | static ssize_t |
605 | store_sas_link_reset(struct device *dev, struct device_attribute *attr, | |
606 | const char *buf, size_t count) | |
07ba3a95 | 607 | { |
ee959b00 | 608 | return do_sas_phy_reset(dev, count, 0); |
07ba3a95 | 609 | } |
ee959b00 | 610 | static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); |
07ba3a95 | 611 | |
ee959b00 TJ |
612 | static ssize_t |
613 | store_sas_hard_reset(struct device *dev, struct device_attribute *attr, | |
614 | const char *buf, size_t count) | |
07ba3a95 | 615 | { |
ee959b00 | 616 | return do_sas_phy_reset(dev, count, 1); |
07ba3a95 | 617 | } |
ee959b00 | 618 | static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); |
07ba3a95 | 619 | |
c7ebbbce CH |
620 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
621 | initiator_port_protocols); | |
622 | sas_phy_protocol_attr(identify.target_port_protocols, | |
623 | target_port_protocols); | |
624 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
625 | unsigned long long); | |
626 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 627 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
628 | sas_phy_linkspeed_attr(negotiated_linkrate); |
629 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 630 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 631 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 632 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
633 | sas_phy_linkerror_attr(invalid_dword_count); |
634 | sas_phy_linkerror_attr(running_disparity_error_count); | |
635 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
636 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce | 637 | |
0b3e09da DW |
638 | static int sas_phy_setup(struct transport_container *tc, struct device *dev, |
639 | struct device *cdev) | |
640 | { | |
641 | struct sas_phy *phy = dev_to_phy(dev); | |
642 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
643 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
644 | ||
645 | if (i->f->phy_setup) | |
646 | i->f->phy_setup(phy); | |
647 | ||
648 | return 0; | |
649 | } | |
c7ebbbce CH |
650 | |
651 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
0b3e09da | 652 | "sas_phy", sas_phy_setup, NULL, NULL); |
c7ebbbce CH |
653 | |
654 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
655 | { | |
656 | struct Scsi_Host *shost; | |
657 | struct sas_internal *i; | |
658 | ||
659 | if (!scsi_is_sas_phy(dev)) | |
660 | return 0; | |
661 | shost = dev_to_shost(dev->parent); | |
662 | ||
663 | if (!shost->transportt) | |
664 | return 0; | |
665 | if (shost->transportt->host_attrs.ac.class != | |
666 | &sas_host_class.class) | |
667 | return 0; | |
668 | ||
669 | i = to_sas_internal(shost->transportt); | |
670 | return &i->phy_attr_cont.ac == cont; | |
671 | } | |
672 | ||
673 | static void sas_phy_release(struct device *dev) | |
674 | { | |
675 | struct sas_phy *phy = dev_to_phy(dev); | |
0b3e09da DW |
676 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
677 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
c7ebbbce | 678 | |
0b3e09da DW |
679 | if (i->f->phy_release) |
680 | i->f->phy_release(phy); | |
c7ebbbce CH |
681 | put_device(dev->parent); |
682 | kfree(phy); | |
683 | } | |
684 | ||
685 | /** | |
eb44820c | 686 | * sas_phy_alloc - allocates and initialize a SAS PHY structure |
c7ebbbce | 687 | * @parent: Parent device |
d99ca418 | 688 | * @number: Phy index |
c7ebbbce CH |
689 | * |
690 | * Allocates an SAS PHY structure. It will be added in the device tree | |
691 | * below the device specified by @parent, which has to be either a Scsi_Host | |
692 | * or sas_rphy. | |
693 | * | |
694 | * Returns: | |
695 | * SAS PHY allocated or %NULL if the allocation failed. | |
696 | */ | |
697 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
698 | { | |
699 | struct Scsi_Host *shost = dev_to_shost(parent); | |
700 | struct sas_phy *phy; | |
701 | ||
24669f75 | 702 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
703 | if (!phy) |
704 | return NULL; | |
c7ebbbce | 705 | |
c7ebbbce | 706 | phy->number = number; |
acbf167d | 707 | phy->enabled = 1; |
c7ebbbce CH |
708 | |
709 | device_initialize(&phy->dev); | |
710 | phy->dev.parent = get_device(parent); | |
711 | phy->dev.release = sas_phy_release; | |
65c92b09 | 712 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
713 | if (scsi_is_sas_expander_device(parent)) { |
714 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 | 715 | dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
716 | rphy->scsi_target_id, number); |
717 | } else | |
71610f55 | 718 | dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number); |
c7ebbbce CH |
719 | |
720 | transport_setup_device(&phy->dev); | |
721 | ||
722 | return phy; | |
723 | } | |
724 | EXPORT_SYMBOL(sas_phy_alloc); | |
725 | ||
726 | /** | |
eb44820c | 727 | * sas_phy_add - add a SAS PHY to the device hierarchy |
c7ebbbce CH |
728 | * @phy: The PHY to be added |
729 | * | |
730 | * Publishes a SAS PHY to the rest of the system. | |
731 | */ | |
732 | int sas_phy_add(struct sas_phy *phy) | |
733 | { | |
734 | int error; | |
735 | ||
736 | error = device_add(&phy->dev); | |
737 | if (!error) { | |
738 | transport_add_device(&phy->dev); | |
739 | transport_configure_device(&phy->dev); | |
740 | } | |
741 | ||
742 | return error; | |
743 | } | |
744 | EXPORT_SYMBOL(sas_phy_add); | |
745 | ||
746 | /** | |
eb44820c | 747 | * sas_phy_free - free a SAS PHY |
c7ebbbce CH |
748 | * @phy: SAS PHY to free |
749 | * | |
750 | * Frees the specified SAS PHY. | |
751 | * | |
752 | * Note: | |
753 | * This function must only be called on a PHY that has not | |
af901ca1 | 754 | * successfully been added using sas_phy_add(). |
c7ebbbce CH |
755 | */ |
756 | void sas_phy_free(struct sas_phy *phy) | |
757 | { | |
758 | transport_destroy_device(&phy->dev); | |
92aab646 | 759 | put_device(&phy->dev); |
c7ebbbce CH |
760 | } |
761 | EXPORT_SYMBOL(sas_phy_free); | |
762 | ||
763 | /** | |
eb44820c | 764 | * sas_phy_delete - remove SAS PHY |
c7ebbbce CH |
765 | * @phy: SAS PHY to remove |
766 | * | |
767 | * Removes the specified SAS PHY. If the SAS PHY has an | |
768 | * associated remote PHY it is removed before. | |
769 | */ | |
770 | void | |
771 | sas_phy_delete(struct sas_phy *phy) | |
772 | { | |
773 | struct device *dev = &phy->dev; | |
774 | ||
65c92b09 JB |
775 | /* this happens if the phy is still part of a port when deleted */ |
776 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
777 | |
778 | transport_remove_device(dev); | |
779 | device_del(dev); | |
780 | transport_destroy_device(dev); | |
92aab646 | 781 | put_device(dev); |
c7ebbbce CH |
782 | } |
783 | EXPORT_SYMBOL(sas_phy_delete); | |
784 | ||
785 | /** | |
eb44820c | 786 | * scsi_is_sas_phy - check if a struct device represents a SAS PHY |
c7ebbbce CH |
787 | * @dev: device to check |
788 | * | |
789 | * Returns: | |
790 | * %1 if the device represents a SAS PHY, %0 else | |
791 | */ | |
792 | int scsi_is_sas_phy(const struct device *dev) | |
793 | { | |
794 | return dev->release == sas_phy_release; | |
795 | } | |
796 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
797 | ||
65c92b09 JB |
798 | /* |
799 | * SAS Port attributes | |
800 | */ | |
801 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
802 | static ssize_t \ | |
ee959b00 TJ |
803 | show_sas_port_##name(struct device *dev, \ |
804 | struct device_attribute *attr, char *buf) \ | |
65c92b09 | 805 | { \ |
ee959b00 | 806 | struct sas_port *port = transport_class_to_sas_port(dev); \ |
65c92b09 JB |
807 | \ |
808 | return snprintf(buf, 20, format_string, cast port->field); \ | |
809 | } | |
810 | ||
811 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
812 | sas_port_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 813 | static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) |
65c92b09 JB |
814 | |
815 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
816 | ||
817 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
818 | "sas_port", NULL, NULL, NULL); | |
819 | ||
820 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
821 | { | |
822 | struct Scsi_Host *shost; | |
823 | struct sas_internal *i; | |
824 | ||
825 | if (!scsi_is_sas_port(dev)) | |
826 | return 0; | |
827 | shost = dev_to_shost(dev->parent); | |
828 | ||
829 | if (!shost->transportt) | |
830 | return 0; | |
831 | if (shost->transportt->host_attrs.ac.class != | |
832 | &sas_host_class.class) | |
833 | return 0; | |
834 | ||
835 | i = to_sas_internal(shost->transportt); | |
836 | return &i->port_attr_cont.ac == cont; | |
837 | } | |
838 | ||
839 | ||
840 | static void sas_port_release(struct device *dev) | |
841 | { | |
842 | struct sas_port *port = dev_to_sas_port(dev); | |
843 | ||
844 | BUG_ON(!list_empty(&port->phy_list)); | |
845 | ||
846 | put_device(dev->parent); | |
847 | kfree(port); | |
848 | } | |
849 | ||
850 | static void sas_port_create_link(struct sas_port *port, | |
851 | struct sas_phy *phy) | |
852 | { | |
21434966 DW |
853 | int res; |
854 | ||
855 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
71610f55 | 856 | dev_name(&phy->dev)); |
21434966 DW |
857 | if (res) |
858 | goto err; | |
859 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
860 | if (res) | |
861 | goto err; | |
862 | return; | |
863 | err: | |
864 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
cadbd4a5 | 865 | __func__, res); |
65c92b09 JB |
866 | } |
867 | ||
868 | static void sas_port_delete_link(struct sas_port *port, | |
869 | struct sas_phy *phy) | |
870 | { | |
71610f55 | 871 | sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev)); |
65c92b09 JB |
872 | sysfs_remove_link(&phy->dev.kobj, "port"); |
873 | } | |
874 | ||
875 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
876 | * | |
877 | * @parent: parent device | |
878 | * @port_id: port number | |
879 | * | |
880 | * Allocates a SAS port structure. It will be added to the device tree | |
881 | * below the device specified by @parent which must be either a Scsi_Host | |
882 | * or a sas_expander_device. | |
883 | * | |
884 | * Returns %NULL on error | |
885 | */ | |
886 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
887 | { | |
888 | struct Scsi_Host *shost = dev_to_shost(parent); | |
889 | struct sas_port *port; | |
890 | ||
891 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
892 | if (!port) | |
893 | return NULL; | |
894 | ||
895 | port->port_identifier = port_id; | |
896 | ||
897 | device_initialize(&port->dev); | |
898 | ||
899 | port->dev.parent = get_device(parent); | |
900 | port->dev.release = sas_port_release; | |
901 | ||
902 | mutex_init(&port->phy_list_mutex); | |
903 | INIT_LIST_HEAD(&port->phy_list); | |
904 | ||
905 | if (scsi_is_sas_expander_device(parent)) { | |
906 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 KS |
907 | dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no, |
908 | rphy->scsi_target_id, port->port_identifier); | |
65c92b09 | 909 | } else |
71610f55 KS |
910 | dev_set_name(&port->dev, "port-%d:%d", shost->host_no, |
911 | port->port_identifier); | |
65c92b09 JB |
912 | |
913 | transport_setup_device(&port->dev); | |
914 | ||
915 | return port; | |
916 | } | |
917 | EXPORT_SYMBOL(sas_port_alloc); | |
918 | ||
c9fefeb2 JB |
919 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
920 | * | |
921 | * @parent: parent device | |
922 | * | |
923 | * Allocates a SAS port structure and a number to go with it. This | |
924 | * interface is really for adapters where the port number has no | |
925 | * meansing, so the sas class should manage them. It will be added to | |
926 | * the device tree below the device specified by @parent which must be | |
927 | * either a Scsi_Host or a sas_expander_device. | |
928 | * | |
929 | * Returns %NULL on error | |
930 | */ | |
931 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
932 | { | |
933 | int index; | |
934 | struct Scsi_Host *shost = dev_to_shost(parent); | |
935 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
936 | ||
937 | /* FIXME: use idr for this eventually */ | |
938 | mutex_lock(&sas_host->lock); | |
939 | if (scsi_is_sas_expander_device(parent)) { | |
940 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
941 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
942 | ||
943 | index = exp->next_port_id++; | |
944 | } else | |
945 | index = sas_host->next_port_id++; | |
946 | mutex_unlock(&sas_host->lock); | |
947 | return sas_port_alloc(parent, index); | |
948 | } | |
949 | EXPORT_SYMBOL(sas_port_alloc_num); | |
950 | ||
65c92b09 JB |
951 | /** |
952 | * sas_port_add - add a SAS port to the device hierarchy | |
65c92b09 JB |
953 | * @port: port to be added |
954 | * | |
955 | * publishes a port to the rest of the system | |
956 | */ | |
957 | int sas_port_add(struct sas_port *port) | |
958 | { | |
959 | int error; | |
960 | ||
961 | /* No phys should be added until this is made visible */ | |
962 | BUG_ON(!list_empty(&port->phy_list)); | |
963 | ||
964 | error = device_add(&port->dev); | |
965 | ||
966 | if (error) | |
967 | return error; | |
968 | ||
969 | transport_add_device(&port->dev); | |
970 | transport_configure_device(&port->dev); | |
971 | ||
972 | return 0; | |
973 | } | |
974 | EXPORT_SYMBOL(sas_port_add); | |
975 | ||
976 | /** | |
eb44820c | 977 | * sas_port_free - free a SAS PORT |
65c92b09 JB |
978 | * @port: SAS PORT to free |
979 | * | |
980 | * Frees the specified SAS PORT. | |
981 | * | |
982 | * Note: | |
983 | * This function must only be called on a PORT that has not | |
af901ca1 | 984 | * successfully been added using sas_port_add(). |
65c92b09 JB |
985 | */ |
986 | void sas_port_free(struct sas_port *port) | |
987 | { | |
988 | transport_destroy_device(&port->dev); | |
989 | put_device(&port->dev); | |
990 | } | |
991 | EXPORT_SYMBOL(sas_port_free); | |
992 | ||
993 | /** | |
eb44820c | 994 | * sas_port_delete - remove SAS PORT |
65c92b09 JB |
995 | * @port: SAS PORT to remove |
996 | * | |
997 | * Removes the specified SAS PORT. If the SAS PORT has an | |
998 | * associated phys, unlink them from the port as well. | |
999 | */ | |
1000 | void sas_port_delete(struct sas_port *port) | |
1001 | { | |
1002 | struct device *dev = &port->dev; | |
1003 | struct sas_phy *phy, *tmp_phy; | |
1004 | ||
1005 | if (port->rphy) { | |
1006 | sas_rphy_delete(port->rphy); | |
1007 | port->rphy = NULL; | |
1008 | } | |
1009 | ||
1010 | mutex_lock(&port->phy_list_mutex); | |
1011 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
1012 | port_siblings) { | |
1013 | sas_port_delete_link(port, phy); | |
1014 | list_del_init(&phy->port_siblings); | |
1015 | } | |
1016 | mutex_unlock(&port->phy_list_mutex); | |
1017 | ||
a0e1b6ef JB |
1018 | if (port->is_backlink) { |
1019 | struct device *parent = port->dev.parent; | |
1020 | ||
71610f55 | 1021 | sysfs_remove_link(&port->dev.kobj, dev_name(parent)); |
a0e1b6ef JB |
1022 | port->is_backlink = 0; |
1023 | } | |
1024 | ||
65c92b09 JB |
1025 | transport_remove_device(dev); |
1026 | device_del(dev); | |
1027 | transport_destroy_device(dev); | |
1028 | put_device(dev); | |
1029 | } | |
1030 | EXPORT_SYMBOL(sas_port_delete); | |
1031 | ||
1032 | /** | |
eb44820c | 1033 | * scsi_is_sas_port - check if a struct device represents a SAS port |
65c92b09 JB |
1034 | * @dev: device to check |
1035 | * | |
1036 | * Returns: | |
1037 | * %1 if the device represents a SAS Port, %0 else | |
1038 | */ | |
1039 | int scsi_is_sas_port(const struct device *dev) | |
1040 | { | |
1041 | return dev->release == sas_port_release; | |
1042 | } | |
1043 | EXPORT_SYMBOL(scsi_is_sas_port); | |
1044 | ||
f41a0c44 DW |
1045 | /** |
1046 | * sas_port_get_phy - try to take a reference on a port member | |
1047 | * @port: port to check | |
1048 | */ | |
1049 | struct sas_phy *sas_port_get_phy(struct sas_port *port) | |
1050 | { | |
1051 | struct sas_phy *phy; | |
1052 | ||
1053 | mutex_lock(&port->phy_list_mutex); | |
1054 | if (list_empty(&port->phy_list)) | |
1055 | phy = NULL; | |
1056 | else { | |
1057 | struct list_head *ent = port->phy_list.next; | |
1058 | ||
1059 | phy = list_entry(ent, typeof(*phy), port_siblings); | |
1060 | get_device(&phy->dev); | |
1061 | } | |
1062 | mutex_unlock(&port->phy_list_mutex); | |
1063 | ||
1064 | return phy; | |
1065 | } | |
1066 | EXPORT_SYMBOL(sas_port_get_phy); | |
1067 | ||
65c92b09 JB |
1068 | /** |
1069 | * sas_port_add_phy - add another phy to a port to form a wide port | |
1070 | * @port: port to add the phy to | |
1071 | * @phy: phy to add | |
1072 | * | |
1073 | * When a port is initially created, it is empty (has no phys). All | |
1074 | * ports must have at least one phy to operated, and all wide ports | |
1075 | * must have at least two. The current code makes no difference | |
1076 | * between ports and wide ports, but the only object that can be | |
1077 | * connected to a remote device is a port, so ports must be formed on | |
1078 | * all devices with phys if they're connected to anything. | |
1079 | */ | |
1080 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
1081 | { | |
1082 | mutex_lock(&port->phy_list_mutex); | |
1083 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
1084 | /* make sure we're already on this port */ | |
1085 | struct sas_phy *tmp; | |
1086 | ||
1087 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
1088 | if (tmp == phy) | |
1089 | break; | |
1090 | /* If this trips, you added a phy that was already | |
1091 | * part of a different port */ | |
1092 | if (unlikely(tmp != phy)) { | |
71610f55 KS |
1093 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", |
1094 | dev_name(&phy->dev)); | |
65c92b09 JB |
1095 | BUG(); |
1096 | } | |
1097 | } else { | |
1098 | sas_port_create_link(port, phy); | |
1099 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
1100 | port->num_phys++; | |
1101 | } | |
1102 | mutex_unlock(&port->phy_list_mutex); | |
1103 | } | |
1104 | EXPORT_SYMBOL(sas_port_add_phy); | |
1105 | ||
1106 | /** | |
1107 | * sas_port_delete_phy - remove a phy from a port or wide port | |
1108 | * @port: port to remove the phy from | |
1109 | * @phy: phy to remove | |
1110 | * | |
1111 | * This operation is used for tearing down ports again. It must be | |
1112 | * done to every port or wide port before calling sas_port_delete. | |
1113 | */ | |
1114 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
1115 | { | |
1116 | mutex_lock(&port->phy_list_mutex); | |
1117 | sas_port_delete_link(port, phy); | |
1118 | list_del_init(&phy->port_siblings); | |
1119 | port->num_phys--; | |
1120 | mutex_unlock(&port->phy_list_mutex); | |
1121 | } | |
1122 | EXPORT_SYMBOL(sas_port_delete_phy); | |
1123 | ||
a0e1b6ef JB |
1124 | void sas_port_mark_backlink(struct sas_port *port) |
1125 | { | |
21434966 | 1126 | int res; |
a0e1b6ef JB |
1127 | struct device *parent = port->dev.parent->parent->parent; |
1128 | ||
1129 | if (port->is_backlink) | |
1130 | return; | |
1131 | port->is_backlink = 1; | |
21434966 | 1132 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
71610f55 | 1133 | dev_name(parent)); |
21434966 DW |
1134 | if (res) |
1135 | goto err; | |
1136 | return; | |
1137 | err: | |
1138 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
cadbd4a5 | 1139 | __func__, res); |
a0e1b6ef JB |
1140 | |
1141 | } | |
1142 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
1143 | ||
c7ebbbce CH |
1144 | /* |
1145 | * SAS remote PHY attributes. | |
1146 | */ | |
1147 | ||
1148 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
1149 | static ssize_t \ | |
ee959b00 TJ |
1150 | show_sas_rphy_##name(struct device *dev, \ |
1151 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1152 | { \ |
ee959b00 | 1153 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1154 | \ |
1155 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
1156 | } | |
1157 | ||
1158 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
1159 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1160 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1161 | show_sas_rphy_##name, NULL) |
1162 | ||
1163 | #define sas_rphy_show_protocol(field, name) \ | |
1164 | static ssize_t \ | |
ee959b00 TJ |
1165 | show_sas_rphy_##name(struct device *dev, \ |
1166 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1167 | { \ |
ee959b00 | 1168 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1169 | \ |
1170 | if (!rphy->field) \ | |
1171 | return snprintf(buf, 20, "none\n"); \ | |
1172 | return get_sas_protocol_names(rphy->field, buf); \ | |
1173 | } | |
1174 | ||
1175 | #define sas_rphy_protocol_attr(field, name) \ | |
1176 | sas_rphy_show_protocol(field, name) \ | |
ee959b00 | 1177 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1178 | show_sas_rphy_##name, NULL) |
1179 | ||
1180 | static ssize_t | |
ee959b00 TJ |
1181 | show_sas_rphy_device_type(struct device *dev, |
1182 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 1183 | { |
ee959b00 | 1184 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
c7ebbbce CH |
1185 | |
1186 | if (!rphy->identify.device_type) | |
1187 | return snprintf(buf, 20, "none\n"); | |
1188 | return get_sas_device_type_names( | |
1189 | rphy->identify.device_type, buf); | |
1190 | } | |
1191 | ||
ee959b00 | 1192 | static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO, |
c7ebbbce CH |
1193 | show_sas_rphy_device_type, NULL); |
1194 | ||
a0125641 | 1195 | static ssize_t |
ee959b00 TJ |
1196 | show_sas_rphy_enclosure_identifier(struct device *dev, |
1197 | struct device_attribute *attr, char *buf) | |
a0125641 | 1198 | { |
ee959b00 | 1199 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1200 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1201 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1202 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1203 | u64 identifier; | |
1204 | int error; | |
1205 | ||
a0125641 CH |
1206 | error = i->f->get_enclosure_identifier(rphy, &identifier); |
1207 | if (error) | |
1208 | return error; | |
1209 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
1210 | } | |
1211 | ||
ee959b00 | 1212 | static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, |
a0125641 CH |
1213 | show_sas_rphy_enclosure_identifier, NULL); |
1214 | ||
1215 | static ssize_t | |
ee959b00 TJ |
1216 | show_sas_rphy_bay_identifier(struct device *dev, |
1217 | struct device_attribute *attr, char *buf) | |
a0125641 | 1218 | { |
ee959b00 | 1219 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1220 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1221 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1222 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1223 | int val; | |
1224 | ||
a0125641 CH |
1225 | val = i->f->get_bay_identifier(rphy); |
1226 | if (val < 0) | |
1227 | return val; | |
1228 | return sprintf(buf, "%d\n", val); | |
1229 | } | |
1230 | ||
ee959b00 | 1231 | static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, |
a0125641 CH |
1232 | show_sas_rphy_bay_identifier, NULL); |
1233 | ||
c7ebbbce CH |
1234 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
1235 | initiator_port_protocols); | |
1236 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
1237 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
1238 | unsigned long long); | |
1239 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
cdc43ae3 | 1240 | sas_rphy_simple_attr(scsi_target_id, scsi_target_id, "%d\n", u32); |
c7ebbbce | 1241 | |
42ab0360 JB |
1242 | /* only need 8 bytes of data plus header (4 or 8) */ |
1243 | #define BUF_SIZE 64 | |
1244 | ||
1245 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1246 | { | |
1247 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
0f88009d | 1248 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); |
42ab0360 JB |
1249 | struct scsi_mode_data mode_data; |
1250 | int res, error; | |
1251 | ||
42ab0360 JB |
1252 | if (!buffer) |
1253 | return -ENOMEM; | |
1254 | ||
1255 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1256 | &mode_data, NULL); | |
1257 | ||
1258 | error = -EINVAL; | |
1259 | if (!scsi_status_is_good(res)) | |
1260 | goto out; | |
1261 | ||
1262 | msdata = buffer + mode_data.header_length + | |
1263 | mode_data.block_descriptor_length; | |
1264 | ||
1265 | if (msdata - buffer > BUF_SIZE - 8) | |
1266 | goto out; | |
1267 | ||
1268 | error = 0; | |
1269 | ||
1270 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1271 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1272 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1273 | ||
1274 | out: | |
1275 | kfree(buffer); | |
1276 | return error; | |
1277 | } | |
1278 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1279 | ||
79cb1819 JB |
1280 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1281 | "sas_end_device", NULL, NULL, NULL); | |
1282 | ||
42ab0360 JB |
1283 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1284 | static ssize_t \ | |
ee959b00 TJ |
1285 | show_sas_end_dev_##name(struct device *dev, \ |
1286 | struct device_attribute *attr, char *buf) \ | |
42ab0360 | 1287 | { \ |
ee959b00 | 1288 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
42ab0360 JB |
1289 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ |
1290 | \ | |
1291 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1292 | } | |
1293 | ||
1294 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1295 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1296 | static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ |
42ab0360 JB |
1297 | show_sas_end_dev_##name, NULL) |
1298 | ||
1299 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1300 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1301 | "%d\n", int); | |
1302 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1303 | "%d\n", int); | |
0f88009d JB |
1304 | sas_end_dev_simple_attr(tlr_supported, tlr_supported, |
1305 | "%d\n", int); | |
1306 | sas_end_dev_simple_attr(tlr_enabled, tlr_enabled, | |
1307 | "%d\n", int); | |
42ab0360 | 1308 | |
79cb1819 JB |
1309 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1310 | "sas_expander", NULL, NULL, NULL); | |
1311 | ||
1312 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1313 | static ssize_t \ | |
ee959b00 TJ |
1314 | show_sas_expander_##name(struct device *dev, \ |
1315 | struct device_attribute *attr, char *buf) \ | |
79cb1819 | 1316 | { \ |
ee959b00 | 1317 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
79cb1819 JB |
1318 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ |
1319 | \ | |
1320 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1321 | } | |
1322 | ||
1323 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1324 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1325 | static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \ |
79cb1819 JB |
1326 | show_sas_expander_##name, NULL) |
1327 | ||
1328 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1329 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1330 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1331 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1332 | "%s\n", char *); | |
1333 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1334 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1335 | unsigned int); | |
1336 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1337 | |
c7ebbbce | 1338 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1339 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1340 | |
1341 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1342 | { | |
1343 | struct Scsi_Host *shost; | |
1344 | struct sas_internal *i; | |
1345 | ||
1346 | if (!scsi_is_sas_rphy(dev)) | |
1347 | return 0; | |
1348 | shost = dev_to_shost(dev->parent->parent); | |
1349 | ||
1350 | if (!shost->transportt) | |
1351 | return 0; | |
1352 | if (shost->transportt->host_attrs.ac.class != | |
1353 | &sas_host_class.class) | |
1354 | return 0; | |
1355 | ||
1356 | i = to_sas_internal(shost->transportt); | |
1357 | return &i->rphy_attr_cont.ac == cont; | |
1358 | } | |
1359 | ||
42ab0360 JB |
1360 | static int sas_end_dev_match(struct attribute_container *cont, |
1361 | struct device *dev) | |
1362 | { | |
1363 | struct Scsi_Host *shost; | |
1364 | struct sas_internal *i; | |
1365 | struct sas_rphy *rphy; | |
1366 | ||
1367 | if (!scsi_is_sas_rphy(dev)) | |
1368 | return 0; | |
1369 | shost = dev_to_shost(dev->parent->parent); | |
1370 | rphy = dev_to_rphy(dev); | |
1371 | ||
1372 | if (!shost->transportt) | |
1373 | return 0; | |
1374 | if (shost->transportt->host_attrs.ac.class != | |
1375 | &sas_host_class.class) | |
1376 | return 0; | |
1377 | ||
1378 | i = to_sas_internal(shost->transportt); | |
1379 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1380 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1381 | } |
1382 | ||
79cb1819 JB |
1383 | static int sas_expander_match(struct attribute_container *cont, |
1384 | struct device *dev) | |
1385 | { | |
1386 | struct Scsi_Host *shost; | |
1387 | struct sas_internal *i; | |
1388 | struct sas_rphy *rphy; | |
1389 | ||
1390 | if (!scsi_is_sas_rphy(dev)) | |
1391 | return 0; | |
1392 | shost = dev_to_shost(dev->parent->parent); | |
1393 | rphy = dev_to_rphy(dev); | |
1394 | ||
1395 | if (!shost->transportt) | |
1396 | return 0; | |
1397 | if (shost->transportt->host_attrs.ac.class != | |
1398 | &sas_host_class.class) | |
1399 | return 0; | |
1400 | ||
1401 | i = to_sas_internal(shost->transportt); | |
1402 | return &i->expander_attr_cont.ac == cont && | |
1403 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1404 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1405 | } |
1406 | ||
2f8600df | 1407 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1408 | { |
1409 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1410 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce | 1411 | |
93c20a59 FT |
1412 | if (rphy->q) |
1413 | blk_cleanup_queue(rphy->q); | |
1414 | ||
c7ebbbce | 1415 | put_device(dev->parent); |
2f8600df | 1416 | kfree(edev); |
c7ebbbce CH |
1417 | } |
1418 | ||
2f8600df | 1419 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1420 | { |
2f8600df JB |
1421 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1422 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1423 | |
93c20a59 FT |
1424 | if (rphy->q) |
1425 | blk_cleanup_queue(rphy->q); | |
1426 | ||
2f8600df JB |
1427 | put_device(dev->parent); |
1428 | kfree(edev); | |
c7ebbbce | 1429 | } |
c7ebbbce | 1430 | |
c5943d36 | 1431 | /** |
183b8021 | 1432 | * sas_rphy_initialize - common rphy initialization |
c5943d36 JB |
1433 | * @rphy: rphy to initialise |
1434 | * | |
1435 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1436 | * initialise the common rphy component of each. | |
1437 | */ | |
1438 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1439 | { | |
1440 | INIT_LIST_HEAD(&rphy->list); | |
1441 | } | |
1442 | ||
42ab0360 JB |
1443 | /** |
1444 | * sas_end_device_alloc - allocate an rphy for an end device | |
eb44820c | 1445 | * @parent: which port |
42ab0360 JB |
1446 | * |
1447 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1448 | * | |
1449 | * Returns: | |
1450 | * SAS PHY allocated or %NULL if the allocation failed. | |
1451 | */ | |
65c92b09 | 1452 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1453 | { |
1454 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1455 | struct sas_end_device *rdev; | |
1456 | ||
1457 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1458 | if (!rdev) { | |
42ab0360 JB |
1459 | return NULL; |
1460 | } | |
1461 | ||
1462 | device_initialize(&rdev->rphy.dev); | |
1463 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1464 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1465 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1466 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
71610f55 KS |
1467 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d", |
1468 | shost->host_no, rphy->scsi_target_id, | |
1469 | parent->port_identifier); | |
65c92b09 | 1470 | } else |
71610f55 KS |
1471 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d", |
1472 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1473 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1474 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1475 | transport_setup_device(&rdev->rphy.dev); |
1476 | ||
1477 | return &rdev->rphy; | |
1478 | } | |
1479 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1480 | ||
79cb1819 JB |
1481 | /** |
1482 | * sas_expander_alloc - allocate an rphy for an end device | |
eb44820c RL |
1483 | * @parent: which port |
1484 | * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE | |
79cb1819 JB |
1485 | * |
1486 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1487 | * | |
1488 | * Returns: | |
1489 | * SAS PHY allocated or %NULL if the allocation failed. | |
1490 | */ | |
65c92b09 | 1491 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1492 | enum sas_device_type type) |
1493 | { | |
1494 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1495 | struct sas_expander_device *rdev; | |
1496 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1497 | ||
1498 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1499 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1500 | ||
1501 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1502 | if (!rdev) { | |
79cb1819 JB |
1503 | return NULL; |
1504 | } | |
1505 | ||
1506 | device_initialize(&rdev->rphy.dev); | |
1507 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1508 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1509 | mutex_lock(&sas_host->lock); |
1510 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1511 | mutex_unlock(&sas_host->lock); | |
71610f55 KS |
1512 | dev_set_name(&rdev->rphy.dev, "expander-%d:%d", |
1513 | shost->host_no, rdev->rphy.scsi_target_id); | |
79cb1819 | 1514 | rdev->rphy.identify.device_type = type; |
c5943d36 | 1515 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1516 | transport_setup_device(&rdev->rphy.dev); |
1517 | ||
1518 | return &rdev->rphy; | |
1519 | } | |
1520 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1521 | |
c7ebbbce | 1522 | /** |
eb44820c | 1523 | * sas_rphy_add - add a SAS remote PHY to the device hierarchy |
c7ebbbce CH |
1524 | * @rphy: The remote PHY to be added |
1525 | * | |
1526 | * Publishes a SAS remote PHY to the rest of the system. | |
1527 | */ | |
1528 | int sas_rphy_add(struct sas_rphy *rphy) | |
1529 | { | |
65c92b09 | 1530 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1531 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1532 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1533 | struct sas_identify *identify = &rphy->identify; | |
1534 | int error; | |
1535 | ||
1536 | if (parent->rphy) | |
1537 | return -ENXIO; | |
1538 | parent->rphy = rphy; | |
1539 | ||
1540 | error = device_add(&rphy->dev); | |
1541 | if (error) | |
1542 | return error; | |
1543 | transport_add_device(&rphy->dev); | |
1544 | transport_configure_device(&rphy->dev); | |
39dca558 | 1545 | if (sas_bsg_initialize(shost, rphy)) |
71610f55 | 1546 | printk("fail to a bsg device %s\n", dev_name(&rphy->dev)); |
39dca558 | 1547 | |
c7ebbbce | 1548 | |
e02f3f59 | 1549 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1550 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1551 | if (identify->device_type == SAS_END_DEVICE && | |
1552 | (identify->target_port_protocols & | |
1553 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1554 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1555 | else if (identify->device_type == SAS_END_DEVICE) |
1556 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1557 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1558 | |
79cb1819 JB |
1559 | if (identify->device_type == SAS_END_DEVICE && |
1560 | rphy->scsi_target_id != -1) { | |
2fc62e2a DW |
1561 | int lun; |
1562 | ||
1563 | if (identify->target_port_protocols & SAS_PROTOCOL_SSP) | |
1564 | lun = SCAN_WILD_CARD; | |
1565 | else | |
1566 | lun = 0; | |
1567 | ||
1d645088 HR |
1568 | scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, lun, |
1569 | SCSI_SCAN_INITIAL); | |
c7ebbbce CH |
1570 | } |
1571 | ||
1572 | return 0; | |
1573 | } | |
1574 | EXPORT_SYMBOL(sas_rphy_add); | |
1575 | ||
1576 | /** | |
eb44820c RL |
1577 | * sas_rphy_free - free a SAS remote PHY |
1578 | * @rphy: SAS remote PHY to free | |
c7ebbbce CH |
1579 | * |
1580 | * Frees the specified SAS remote PHY. | |
1581 | * | |
1582 | * Note: | |
1583 | * This function must only be called on a remote | |
af901ca1 | 1584 | * PHY that has not successfully been added using |
6f63caae | 1585 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
c7ebbbce CH |
1586 | */ |
1587 | void sas_rphy_free(struct sas_rphy *rphy) | |
1588 | { | |
92aab646 | 1589 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1590 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1591 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1592 | ||
e02f3f59 | 1593 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1594 | list_del(&rphy->list); |
e02f3f59 | 1595 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1596 | |
92aab646 | 1597 | transport_destroy_device(dev); |
2f8600df | 1598 | |
92aab646 | 1599 | put_device(dev); |
c7ebbbce CH |
1600 | } |
1601 | EXPORT_SYMBOL(sas_rphy_free); | |
1602 | ||
1603 | /** | |
eb44820c | 1604 | * sas_rphy_delete - remove and free SAS remote PHY |
6f63caae | 1605 | * @rphy: SAS remote PHY to remove and free |
c7ebbbce | 1606 | * |
6f63caae | 1607 | * Removes the specified SAS remote PHY and frees it. |
c7ebbbce CH |
1608 | */ |
1609 | void | |
1610 | sas_rphy_delete(struct sas_rphy *rphy) | |
6f63caae DW |
1611 | { |
1612 | sas_rphy_remove(rphy); | |
1613 | sas_rphy_free(rphy); | |
1614 | } | |
1615 | EXPORT_SYMBOL(sas_rphy_delete); | |
1616 | ||
87c8331f DW |
1617 | /** |
1618 | * sas_rphy_unlink - unlink SAS remote PHY | |
1619 | * @rphy: SAS remote phy to unlink from its parent port | |
1620 | * | |
1621 | * Removes port reference to an rphy | |
1622 | */ | |
1623 | void sas_rphy_unlink(struct sas_rphy *rphy) | |
1624 | { | |
1625 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); | |
1626 | ||
1627 | parent->rphy = NULL; | |
1628 | } | |
1629 | EXPORT_SYMBOL(sas_rphy_unlink); | |
1630 | ||
6f63caae | 1631 | /** |
eb44820c | 1632 | * sas_rphy_remove - remove SAS remote PHY |
6f63caae DW |
1633 | * @rphy: SAS remote phy to remove |
1634 | * | |
1635 | * Removes the specified SAS remote PHY. | |
1636 | */ | |
1637 | void | |
1638 | sas_rphy_remove(struct sas_rphy *rphy) | |
c7ebbbce CH |
1639 | { |
1640 | struct device *dev = &rphy->dev; | |
c7ebbbce | 1641 | |
d4054239 CH |
1642 | switch (rphy->identify.device_type) { |
1643 | case SAS_END_DEVICE: | |
1644 | scsi_remove_target(dev); | |
1645 | break; | |
1646 | case SAS_EDGE_EXPANDER_DEVICE: | |
1647 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1648 | sas_remove_children(dev); |
d4054239 CH |
1649 | break; |
1650 | default: | |
1651 | break; | |
1652 | } | |
c7ebbbce | 1653 | |
87c8331f | 1654 | sas_rphy_unlink(rphy); |
651a0136 CH |
1655 | if (rphy->q) |
1656 | bsg_unregister_queue(rphy->q); | |
fe8b2304 CH |
1657 | transport_remove_device(dev); |
1658 | device_del(dev); | |
c7ebbbce | 1659 | } |
6f63caae | 1660 | EXPORT_SYMBOL(sas_rphy_remove); |
c7ebbbce CH |
1661 | |
1662 | /** | |
eb44820c | 1663 | * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY |
c7ebbbce CH |
1664 | * @dev: device to check |
1665 | * | |
1666 | * Returns: | |
1667 | * %1 if the device represents a SAS remote PHY, %0 else | |
1668 | */ | |
1669 | int scsi_is_sas_rphy(const struct device *dev) | |
1670 | { | |
2f8600df JB |
1671 | return dev->release == sas_end_device_release || |
1672 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1673 | } |
1674 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1675 | ||
1676 | ||
1677 | /* | |
1678 | * SCSI scan helper | |
1679 | */ | |
1680 | ||
e02f3f59 | 1681 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
9cb78c16 | 1682 | uint id, u64 lun) |
c7ebbbce CH |
1683 | { |
1684 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1685 | struct sas_rphy *rphy; | |
c7ebbbce | 1686 | |
e02f3f59 | 1687 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1688 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1689 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1690 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1691 | continue; |
1692 | ||
e8bf3941 | 1693 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1694 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
1d645088 HR |
1695 | scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, |
1696 | lun, SCSI_SCAN_MANUAL); | |
e02f3f59 | 1697 | } |
c7ebbbce | 1698 | } |
e02f3f59 | 1699 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1700 | |
e02f3f59 | 1701 | return 0; |
c7ebbbce CH |
1702 | } |
1703 | ||
1704 | ||
1705 | /* | |
1706 | * Setup / Teardown code | |
1707 | */ | |
1708 | ||
d24e1eeb | 1709 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
ee959b00 | 1710 | i->private_##attrb[count] = dev_attr_##field; \ |
42ab0360 | 1711 | i->private_##attrb[count].attr.mode = perm; \ |
42ab0360 JB |
1712 | i->attrb[count] = &i->private_##attrb[count]; \ |
1713 | if (test) \ | |
1714 | count++ | |
1715 | ||
d24e1eeb | 1716 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
ee959b00 | 1717 | i->private_##attrb[count] = dev_attr_##field; \ |
d24e1eeb JB |
1718 | i->private_##attrb[count].attr.mode = perm; \ |
1719 | if (ro_test) { \ | |
1720 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1721 | i->private_##attrb[count].store = NULL; \ | |
1722 | } \ | |
1723 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1724 | if (test) \ | |
1725 | count++ | |
42ab0360 JB |
1726 | |
1727 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1728 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1729 | |
dd9fbb52 | 1730 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1731 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1732 | |
65c92b09 | 1733 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1734 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1735 | |
d24e1eeb JB |
1736 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1737 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1738 | !i->f->set_phy_speed, S_IRUGO) | |
1739 | ||
acbf167d DW |
1740 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
1741 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1742 | !i->f->func, S_IRUGO) | |
1743 | ||
65c92b09 JB |
1744 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1745 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1746 | ||
1747 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1748 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1749 | |
65c92b09 | 1750 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
fe3b5bfe | 1751 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
07ba3a95 | 1752 | |
65c92b09 | 1753 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
fe3b5bfe | 1754 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
dd9fbb52 | 1755 | |
42ab0360 JB |
1756 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1757 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1758 | |
79cb1819 JB |
1759 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1760 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1761 | ||
c7ebbbce | 1762 | /** |
eb44820c | 1763 | * sas_attach_transport - instantiate SAS transport template |
c7ebbbce CH |
1764 | * @ft: SAS transport class function template |
1765 | */ | |
1766 | struct scsi_transport_template * | |
1767 | sas_attach_transport(struct sas_function_template *ft) | |
1768 | { | |
1769 | struct sas_internal *i; | |
1770 | int count; | |
1771 | ||
24669f75 | 1772 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1773 | if (!i) |
1774 | return NULL; | |
c7ebbbce | 1775 | |
e02f3f59 | 1776 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1777 | |
1778 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1779 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1780 | i->t.host_attrs.ac.match = sas_host_match; | |
1781 | transport_container_register(&i->t.host_attrs); | |
1782 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1783 | ||
1784 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1785 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1786 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1787 | transport_container_register(&i->phy_attr_cont); | |
1788 | ||
65c92b09 JB |
1789 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1790 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1791 | i->port_attr_cont.ac.match = sas_port_match; | |
1792 | transport_container_register(&i->port_attr_cont); | |
1793 | ||
c7ebbbce CH |
1794 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1795 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1796 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1797 | transport_container_register(&i->rphy_attr_cont); | |
1798 | ||
42ab0360 JB |
1799 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1800 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1801 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1802 | transport_container_register(&i->end_dev_attr_cont); | |
1803 | ||
79cb1819 JB |
1804 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1805 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1806 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1807 | transport_container_register(&i->expander_attr_cont); | |
1808 | ||
c7ebbbce CH |
1809 | i->f = ft; |
1810 | ||
c7ebbbce | 1811 | count = 0; |
65c92b09 JB |
1812 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1813 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1814 | SETUP_PHY_ATTRIBUTE(device_type); | |
1815 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1816 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1817 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1818 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1819 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1820 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1821 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1822 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1823 | |
1824 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1825 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1826 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1827 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1828 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1829 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1830 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1831 | i->phy_attrs[count] = NULL; |
1832 | ||
65c92b09 JB |
1833 | count = 0; |
1834 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1835 | i->port_attrs[count] = NULL; | |
1836 | ||
c7ebbbce CH |
1837 | count = 0; |
1838 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1839 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1840 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1841 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1842 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
cdc43ae3 | 1843 | SETUP_RPORT_ATTRIBUTE(rphy_scsi_target_id); |
dd9fbb52 JB |
1844 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1845 | get_enclosure_identifier); | |
1846 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1847 | get_bay_identifier); | |
c7ebbbce CH |
1848 | i->rphy_attrs[count] = NULL; |
1849 | ||
42ab0360 JB |
1850 | count = 0; |
1851 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1852 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1853 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
0f88009d JB |
1854 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_supported); |
1855 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_enabled); | |
42ab0360 JB |
1856 | i->end_dev_attrs[count] = NULL; |
1857 | ||
79cb1819 JB |
1858 | count = 0; |
1859 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1860 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1861 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1862 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1863 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1864 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1865 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1866 | i->expander_attrs[count] = NULL; | |
1867 | ||
c7ebbbce CH |
1868 | return &i->t; |
1869 | } | |
1870 | EXPORT_SYMBOL(sas_attach_transport); | |
1871 | ||
1872 | /** | |
eb44820c | 1873 | * sas_release_transport - release SAS transport template instance |
c7ebbbce CH |
1874 | * @t: transport template instance |
1875 | */ | |
1876 | void sas_release_transport(struct scsi_transport_template *t) | |
1877 | { | |
1878 | struct sas_internal *i = to_sas_internal(t); | |
1879 | ||
1880 | transport_container_unregister(&i->t.host_attrs); | |
1881 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1882 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1883 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1884 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1885 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1886 | |
1887 | kfree(i); | |
1888 | } | |
1889 | EXPORT_SYMBOL(sas_release_transport); | |
1890 | ||
1891 | static __init int sas_transport_init(void) | |
1892 | { | |
1893 | int error; | |
1894 | ||
1895 | error = transport_class_register(&sas_host_class); | |
1896 | if (error) | |
1897 | goto out; | |
1898 | error = transport_class_register(&sas_phy_class); | |
1899 | if (error) | |
1900 | goto out_unregister_transport; | |
65c92b09 | 1901 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1902 | if (error) |
1903 | goto out_unregister_phy; | |
65c92b09 JB |
1904 | error = transport_class_register(&sas_rphy_class); |
1905 | if (error) | |
1906 | goto out_unregister_port; | |
42ab0360 JB |
1907 | error = transport_class_register(&sas_end_dev_class); |
1908 | if (error) | |
1909 | goto out_unregister_rphy; | |
79cb1819 JB |
1910 | error = transport_class_register(&sas_expander_class); |
1911 | if (error) | |
1912 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1913 | |
1914 | return 0; | |
1915 | ||
79cb1819 JB |
1916 | out_unregister_end_dev: |
1917 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1918 | out_unregister_rphy: |
1919 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1920 | out_unregister_port: |
1921 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1922 | out_unregister_phy: |
1923 | transport_class_unregister(&sas_phy_class); | |
1924 | out_unregister_transport: | |
1925 | transport_class_unregister(&sas_host_class); | |
1926 | out: | |
1927 | return error; | |
1928 | ||
1929 | } | |
1930 | ||
1931 | static void __exit sas_transport_exit(void) | |
1932 | { | |
1933 | transport_class_unregister(&sas_host_class); | |
1934 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1935 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1936 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1937 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1938 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1939 | } |
1940 | ||
1941 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1942 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
1943 | MODULE_LICENSE("GPL"); |
1944 | ||
1945 | module_init(sas_transport_init); | |
1946 | module_exit(sas_transport_exit); |