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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 | ||
39dca558 | 190 | static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) |
7aa68e80 FT |
191 | { |
192 | struct request_queue *q; | |
7aa68e80 FT |
193 | |
194 | if (!to_sas_internal(shost->transportt)->f->smp_handler) { | |
195 | printk("%s can't handle SMP requests\n", shost->hostt->name); | |
196 | return 0; | |
197 | } | |
198 | ||
39dca558 | 199 | if (rphy) { |
651a0136 | 200 | q = bsg_setup_queue(&rphy->dev, dev_name(&rphy->dev), |
5de815a7 | 201 | sas_smp_dispatch, 0); |
651a0136 CH |
202 | if (IS_ERR(q)) |
203 | return PTR_ERR(q); | |
204 | rphy->q = q; | |
39dca558 | 205 | } else { |
651a0136 CH |
206 | char name[20]; |
207 | ||
208 | snprintf(name, sizeof(name), "sas_host%d", shost->host_no); | |
209 | q = bsg_setup_queue(&shost->shost_gendev, name, | |
5de815a7 | 210 | sas_smp_dispatch, 0); |
651a0136 CH |
211 | if (IS_ERR(q)) |
212 | return PTR_ERR(q); | |
213 | to_sas_host_attrs(shost)->q = q; | |
39dca558 | 214 | } |
7aa68e80 | 215 | |
8b904b5b | 216 | blk_queue_flag_set(QUEUE_FLAG_BIDI, q); |
7aa68e80 | 217 | return 0; |
b6aff669 JB |
218 | } |
219 | ||
c7ebbbce CH |
220 | /* |
221 | * SAS host attributes | |
222 | */ | |
223 | ||
37be6eeb | 224 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 225 | struct device *cdev) |
c7ebbbce CH |
226 | { |
227 | struct Scsi_Host *shost = dev_to_shost(dev); | |
228 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
229 | ||
230 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 231 | mutex_init(&sas_host->lock); |
c7ebbbce | 232 | sas_host->next_target_id = 0; |
79cb1819 | 233 | sas_host->next_expander_id = 0; |
c9fefeb2 | 234 | sas_host->next_port_id = 0; |
7aa68e80 | 235 | |
39dca558 | 236 | if (sas_bsg_initialize(shost, NULL)) |
7aa68e80 FT |
237 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", |
238 | shost->host_no); | |
239 | ||
c7ebbbce CH |
240 | return 0; |
241 | } | |
242 | ||
b6aff669 | 243 | static int sas_host_remove(struct transport_container *tc, struct device *dev, |
ee959b00 | 244 | struct device *cdev) |
b6aff669 JB |
245 | { |
246 | struct Scsi_Host *shost = dev_to_shost(dev); | |
651a0136 | 247 | struct request_queue *q = to_sas_host_attrs(shost)->q; |
b6aff669 | 248 | |
5de815a7 | 249 | if (q) { |
651a0136 | 250 | bsg_unregister_queue(q); |
5de815a7 CH |
251 | blk_cleanup_queue(q); |
252 | } | |
253 | ||
b6aff669 JB |
254 | return 0; |
255 | } | |
256 | ||
c7ebbbce | 257 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
b6aff669 | 258 | "sas_host", sas_host_setup, sas_host_remove, NULL); |
c7ebbbce CH |
259 | |
260 | static int sas_host_match(struct attribute_container *cont, | |
261 | struct device *dev) | |
262 | { | |
263 | struct Scsi_Host *shost; | |
264 | struct sas_internal *i; | |
265 | ||
266 | if (!scsi_is_host_device(dev)) | |
267 | return 0; | |
268 | shost = dev_to_shost(dev); | |
269 | ||
270 | if (!shost->transportt) | |
271 | return 0; | |
272 | if (shost->transportt->host_attrs.ac.class != | |
273 | &sas_host_class.class) | |
274 | return 0; | |
275 | ||
276 | i = to_sas_internal(shost->transportt); | |
277 | return &i->t.host_attrs.ac == cont; | |
278 | } | |
279 | ||
280 | static int do_sas_phy_delete(struct device *dev, void *data) | |
281 | { | |
65c92b09 JB |
282 | int pass = (int)(unsigned long)data; |
283 | ||
284 | if (pass == 0 && scsi_is_sas_port(dev)) | |
285 | sas_port_delete(dev_to_sas_port(dev)); | |
286 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
287 | sas_phy_delete(dev_to_phy(dev)); |
288 | return 0; | |
289 | } | |
290 | ||
65c92b09 | 291 | /** |
eb44820c | 292 | * sas_remove_children - tear down a devices SAS data structures |
65c92b09 JB |
293 | * @dev: device belonging to the sas object |
294 | * | |
295 | * Removes all SAS PHYs and remote PHYs for a given object | |
296 | */ | |
297 | void sas_remove_children(struct device *dev) | |
298 | { | |
299 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
300 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
301 | } | |
302 | EXPORT_SYMBOL(sas_remove_children); | |
303 | ||
c7ebbbce | 304 | /** |
eb44820c | 305 | * sas_remove_host - tear down a Scsi_Host's SAS data structures |
c7ebbbce CH |
306 | * @shost: Scsi Host that is torn down |
307 | * | |
c5ce0abe JT |
308 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host and remove the |
309 | * Scsi_Host as well. | |
310 | * | |
311 | * Note: Do not call scsi_remove_host() on the Scsi_Host any more, as it is | |
312 | * already removed. | |
c7ebbbce CH |
313 | */ |
314 | void sas_remove_host(struct Scsi_Host *shost) | |
315 | { | |
65c92b09 | 316 | sas_remove_children(&shost->shost_gendev); |
c5ce0abe | 317 | scsi_remove_host(shost); |
c7ebbbce CH |
318 | } |
319 | EXPORT_SYMBOL(sas_remove_host); | |
320 | ||
bcf508c1 JB |
321 | /** |
322 | * sas_get_address - return the SAS address of the device | |
323 | * @sdev: scsi device | |
324 | * | |
325 | * Returns the SAS address of the scsi device | |
326 | */ | |
327 | u64 sas_get_address(struct scsi_device *sdev) | |
328 | { | |
329 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
330 | ||
331 | return rdev->rphy.identify.sas_address; | |
332 | } | |
333 | EXPORT_SYMBOL(sas_get_address); | |
334 | ||
0f88009d JB |
335 | /** |
336 | * sas_tlr_supported - checking TLR bit in vpd 0x90 | |
337 | * @sdev: scsi device struct | |
338 | * | |
339 | * Check Transport Layer Retries are supported or not. | |
340 | * If vpd page 0x90 is present, TRL is supported. | |
341 | * | |
342 | */ | |
343 | unsigned int | |
344 | sas_tlr_supported(struct scsi_device *sdev) | |
345 | { | |
346 | const int vpd_len = 32; | |
347 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
348 | char *buffer = kzalloc(vpd_len, GFP_KERNEL); | |
349 | int ret = 0; | |
350 | ||
e1779b4f BVA |
351 | if (!buffer) |
352 | goto out; | |
353 | ||
0f88009d JB |
354 | if (scsi_get_vpd_page(sdev, 0x90, buffer, vpd_len)) |
355 | goto out; | |
356 | ||
357 | /* | |
358 | * Magic numbers: the VPD Protocol page (0x90) | |
359 | * has a 4 byte header and then one entry per device port | |
360 | * the TLR bit is at offset 8 on each port entry | |
361 | * if we take the first port, that's at total offset 12 | |
362 | */ | |
363 | ret = buffer[12] & 0x01; | |
364 | ||
365 | out: | |
366 | kfree(buffer); | |
367 | rdev->tlr_supported = ret; | |
368 | return ret; | |
369 | ||
370 | } | |
371 | EXPORT_SYMBOL_GPL(sas_tlr_supported); | |
372 | ||
373 | /** | |
374 | * sas_disable_tlr - setting TLR flags | |
375 | * @sdev: scsi device struct | |
376 | * | |
377 | * Seting tlr_enabled flag to 0. | |
378 | * | |
379 | */ | |
380 | void | |
381 | sas_disable_tlr(struct scsi_device *sdev) | |
382 | { | |
383 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
384 | ||
385 | rdev->tlr_enabled = 0; | |
386 | } | |
387 | EXPORT_SYMBOL_GPL(sas_disable_tlr); | |
388 | ||
389 | /** | |
390 | * sas_enable_tlr - setting TLR flags | |
391 | * @sdev: scsi device struct | |
392 | * | |
393 | * Seting tlr_enabled flag 1. | |
394 | * | |
395 | */ | |
396 | void sas_enable_tlr(struct scsi_device *sdev) | |
397 | { | |
398 | unsigned int tlr_supported = 0; | |
399 | tlr_supported = sas_tlr_supported(sdev); | |
400 | ||
401 | if (tlr_supported) { | |
402 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
403 | ||
404 | rdev->tlr_enabled = 1; | |
405 | } | |
406 | ||
407 | return; | |
408 | } | |
409 | EXPORT_SYMBOL_GPL(sas_enable_tlr); | |
410 | ||
411 | unsigned int sas_is_tlr_enabled(struct scsi_device *sdev) | |
412 | { | |
413 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
414 | return rdev->tlr_enabled; | |
415 | } | |
416 | EXPORT_SYMBOL_GPL(sas_is_tlr_enabled); | |
c7ebbbce CH |
417 | |
418 | /* | |
65c92b09 | 419 | * SAS Phy attributes |
c7ebbbce CH |
420 | */ |
421 | ||
422 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
423 | static ssize_t \ | |
ee959b00 TJ |
424 | show_sas_phy_##name(struct device *dev, \ |
425 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 426 | { \ |
ee959b00 | 427 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
428 | \ |
429 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
430 | } | |
431 | ||
432 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
433 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 434 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
435 | |
436 | #define sas_phy_show_protocol(field, name) \ | |
437 | static ssize_t \ | |
ee959b00 TJ |
438 | show_sas_phy_##name(struct device *dev, \ |
439 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 440 | { \ |
ee959b00 | 441 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
442 | \ |
443 | if (!phy->field) \ | |
444 | return snprintf(buf, 20, "none\n"); \ | |
445 | return get_sas_protocol_names(phy->field, buf); \ | |
446 | } | |
447 | ||
448 | #define sas_phy_protocol_attr(field, name) \ | |
449 | sas_phy_show_protocol(field, name) \ | |
ee959b00 | 450 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
451 | |
452 | #define sas_phy_show_linkspeed(field) \ | |
453 | static ssize_t \ | |
ee959b00 TJ |
454 | show_sas_phy_##field(struct device *dev, \ |
455 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 456 | { \ |
ee959b00 | 457 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
458 | \ |
459 | return get_sas_linkspeed_names(phy->field, buf); \ | |
460 | } | |
461 | ||
d24e1eeb JB |
462 | /* Fudge to tell if we're minimum or maximum */ |
463 | #define sas_phy_store_linkspeed(field) \ | |
464 | static ssize_t \ | |
ee959b00 TJ |
465 | store_sas_phy_##field(struct device *dev, \ |
466 | struct device_attribute *attr, \ | |
467 | const char *buf, size_t count) \ | |
d24e1eeb | 468 | { \ |
ee959b00 | 469 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
d24e1eeb JB |
470 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
471 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
472 | u32 value; \ | |
473 | struct sas_phy_linkrates rates = {0}; \ | |
474 | int error; \ | |
475 | \ | |
476 | error = set_sas_linkspeed_names(&value, buf); \ | |
477 | if (error) \ | |
478 | return error; \ | |
479 | rates.field = value; \ | |
480 | error = i->f->set_phy_speed(phy, &rates); \ | |
481 | \ | |
482 | return error ? error : count; \ | |
483 | } | |
484 | ||
485 | #define sas_phy_linkspeed_rw_attr(field) \ | |
486 | sas_phy_show_linkspeed(field) \ | |
487 | sas_phy_store_linkspeed(field) \ | |
ee959b00 | 488 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ |
d24e1eeb JB |
489 | store_sas_phy_##field) |
490 | ||
c7ebbbce CH |
491 | #define sas_phy_linkspeed_attr(field) \ |
492 | sas_phy_show_linkspeed(field) \ | |
ee959b00 | 493 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c7ebbbce | 494 | |
d24e1eeb | 495 | |
c3ee74c4 CH |
496 | #define sas_phy_show_linkerror(field) \ |
497 | static ssize_t \ | |
ee959b00 TJ |
498 | show_sas_phy_##field(struct device *dev, \ |
499 | struct device_attribute *attr, char *buf) \ | |
c3ee74c4 | 500 | { \ |
ee959b00 | 501 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c3ee74c4 CH |
502 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
503 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
504 | int error; \ | |
505 | \ | |
dd9fbb52 | 506 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
507 | if (error) \ |
508 | return error; \ | |
509 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
510 | } | |
511 | ||
512 | #define sas_phy_linkerror_attr(field) \ | |
513 | sas_phy_show_linkerror(field) \ | |
ee959b00 | 514 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c3ee74c4 CH |
515 | |
516 | ||
c7ebbbce | 517 | static ssize_t |
ee959b00 TJ |
518 | show_sas_device_type(struct device *dev, |
519 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 520 | { |
ee959b00 | 521 | struct sas_phy *phy = transport_class_to_phy(dev); |
c7ebbbce CH |
522 | |
523 | if (!phy->identify.device_type) | |
524 | return snprintf(buf, 20, "none\n"); | |
525 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
526 | } | |
ee959b00 | 527 | static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
c7ebbbce | 528 | |
ee959b00 | 529 | static ssize_t do_sas_phy_enable(struct device *dev, |
acbf167d DW |
530 | size_t count, int enable) |
531 | { | |
ee959b00 | 532 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
533 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
534 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
535 | int error; | |
536 | ||
537 | error = i->f->phy_enable(phy, enable); | |
538 | if (error) | |
539 | return error; | |
540 | phy->enabled = enable; | |
541 | return count; | |
542 | }; | |
543 | ||
ee959b00 TJ |
544 | static ssize_t |
545 | store_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
546 | const char *buf, size_t count) | |
acbf167d DW |
547 | { |
548 | if (count < 1) | |
549 | return -EINVAL; | |
550 | ||
551 | switch (buf[0]) { | |
552 | case '0': | |
ee959b00 | 553 | do_sas_phy_enable(dev, count, 0); |
acbf167d DW |
554 | break; |
555 | case '1': | |
ee959b00 | 556 | do_sas_phy_enable(dev, count, 1); |
acbf167d DW |
557 | break; |
558 | default: | |
559 | return -EINVAL; | |
560 | } | |
561 | ||
562 | return count; | |
563 | } | |
564 | ||
ee959b00 TJ |
565 | static ssize_t |
566 | show_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
567 | char *buf) | |
acbf167d | 568 | { |
ee959b00 | 569 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
570 | |
571 | return snprintf(buf, 20, "%d", phy->enabled); | |
572 | } | |
573 | ||
ee959b00 | 574 | static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, |
acbf167d DW |
575 | store_sas_phy_enable); |
576 | ||
ee959b00 TJ |
577 | static ssize_t |
578 | do_sas_phy_reset(struct device *dev, size_t count, int hard_reset) | |
07ba3a95 | 579 | { |
ee959b00 | 580 | struct sas_phy *phy = transport_class_to_phy(dev); |
07ba3a95 CH |
581 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
582 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
583 | int error; | |
584 | ||
07ba3a95 CH |
585 | error = i->f->phy_reset(phy, hard_reset); |
586 | if (error) | |
587 | return error; | |
16d3db1b | 588 | phy->enabled = 1; |
07ba3a95 CH |
589 | return count; |
590 | }; | |
591 | ||
ee959b00 TJ |
592 | static ssize_t |
593 | store_sas_link_reset(struct device *dev, struct device_attribute *attr, | |
594 | const char *buf, size_t count) | |
07ba3a95 | 595 | { |
ee959b00 | 596 | return do_sas_phy_reset(dev, count, 0); |
07ba3a95 | 597 | } |
ee959b00 | 598 | static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); |
07ba3a95 | 599 | |
ee959b00 TJ |
600 | static ssize_t |
601 | store_sas_hard_reset(struct device *dev, struct device_attribute *attr, | |
602 | const char *buf, size_t count) | |
07ba3a95 | 603 | { |
ee959b00 | 604 | return do_sas_phy_reset(dev, count, 1); |
07ba3a95 | 605 | } |
ee959b00 | 606 | static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); |
07ba3a95 | 607 | |
c7ebbbce CH |
608 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
609 | initiator_port_protocols); | |
610 | sas_phy_protocol_attr(identify.target_port_protocols, | |
611 | target_port_protocols); | |
612 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
613 | unsigned long long); | |
614 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c9fefeb2 | 615 | //sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int); |
c7ebbbce CH |
616 | sas_phy_linkspeed_attr(negotiated_linkrate); |
617 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 618 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 619 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 620 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
621 | sas_phy_linkerror_attr(invalid_dword_count); |
622 | sas_phy_linkerror_attr(running_disparity_error_count); | |
623 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
624 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce | 625 | |
0b3e09da DW |
626 | static int sas_phy_setup(struct transport_container *tc, struct device *dev, |
627 | struct device *cdev) | |
628 | { | |
629 | struct sas_phy *phy = dev_to_phy(dev); | |
630 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
631 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
632 | ||
633 | if (i->f->phy_setup) | |
634 | i->f->phy_setup(phy); | |
635 | ||
636 | return 0; | |
637 | } | |
c7ebbbce CH |
638 | |
639 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
0b3e09da | 640 | "sas_phy", sas_phy_setup, NULL, NULL); |
c7ebbbce CH |
641 | |
642 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
643 | { | |
644 | struct Scsi_Host *shost; | |
645 | struct sas_internal *i; | |
646 | ||
647 | if (!scsi_is_sas_phy(dev)) | |
648 | return 0; | |
649 | shost = dev_to_shost(dev->parent); | |
650 | ||
651 | if (!shost->transportt) | |
652 | return 0; | |
653 | if (shost->transportt->host_attrs.ac.class != | |
654 | &sas_host_class.class) | |
655 | return 0; | |
656 | ||
657 | i = to_sas_internal(shost->transportt); | |
658 | return &i->phy_attr_cont.ac == cont; | |
659 | } | |
660 | ||
661 | static void sas_phy_release(struct device *dev) | |
662 | { | |
663 | struct sas_phy *phy = dev_to_phy(dev); | |
0b3e09da DW |
664 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
665 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
c7ebbbce | 666 | |
0b3e09da DW |
667 | if (i->f->phy_release) |
668 | i->f->phy_release(phy); | |
c7ebbbce CH |
669 | put_device(dev->parent); |
670 | kfree(phy); | |
671 | } | |
672 | ||
673 | /** | |
eb44820c | 674 | * sas_phy_alloc - allocates and initialize a SAS PHY structure |
c7ebbbce | 675 | * @parent: Parent device |
d99ca418 | 676 | * @number: Phy index |
c7ebbbce CH |
677 | * |
678 | * Allocates an SAS PHY structure. It will be added in the device tree | |
679 | * below the device specified by @parent, which has to be either a Scsi_Host | |
680 | * or sas_rphy. | |
681 | * | |
682 | * Returns: | |
683 | * SAS PHY allocated or %NULL if the allocation failed. | |
684 | */ | |
685 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
686 | { | |
687 | struct Scsi_Host *shost = dev_to_shost(parent); | |
688 | struct sas_phy *phy; | |
689 | ||
24669f75 | 690 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
691 | if (!phy) |
692 | return NULL; | |
c7ebbbce | 693 | |
c7ebbbce | 694 | phy->number = number; |
acbf167d | 695 | phy->enabled = 1; |
c7ebbbce CH |
696 | |
697 | device_initialize(&phy->dev); | |
698 | phy->dev.parent = get_device(parent); | |
699 | phy->dev.release = sas_phy_release; | |
65c92b09 | 700 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
701 | if (scsi_is_sas_expander_device(parent)) { |
702 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 | 703 | dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
704 | rphy->scsi_target_id, number); |
705 | } else | |
71610f55 | 706 | dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number); |
c7ebbbce CH |
707 | |
708 | transport_setup_device(&phy->dev); | |
709 | ||
710 | return phy; | |
711 | } | |
712 | EXPORT_SYMBOL(sas_phy_alloc); | |
713 | ||
714 | /** | |
eb44820c | 715 | * sas_phy_add - add a SAS PHY to the device hierarchy |
c7ebbbce CH |
716 | * @phy: The PHY to be added |
717 | * | |
718 | * Publishes a SAS PHY to the rest of the system. | |
719 | */ | |
720 | int sas_phy_add(struct sas_phy *phy) | |
721 | { | |
722 | int error; | |
723 | ||
724 | error = device_add(&phy->dev); | |
725 | if (!error) { | |
726 | transport_add_device(&phy->dev); | |
727 | transport_configure_device(&phy->dev); | |
728 | } | |
729 | ||
730 | return error; | |
731 | } | |
732 | EXPORT_SYMBOL(sas_phy_add); | |
733 | ||
734 | /** | |
eb44820c | 735 | * sas_phy_free - free a SAS PHY |
c7ebbbce CH |
736 | * @phy: SAS PHY to free |
737 | * | |
738 | * Frees the specified SAS PHY. | |
739 | * | |
740 | * Note: | |
741 | * This function must only be called on a PHY that has not | |
af901ca1 | 742 | * successfully been added using sas_phy_add(). |
c7ebbbce CH |
743 | */ |
744 | void sas_phy_free(struct sas_phy *phy) | |
745 | { | |
746 | transport_destroy_device(&phy->dev); | |
92aab646 | 747 | put_device(&phy->dev); |
c7ebbbce CH |
748 | } |
749 | EXPORT_SYMBOL(sas_phy_free); | |
750 | ||
751 | /** | |
eb44820c | 752 | * sas_phy_delete - remove SAS PHY |
c7ebbbce CH |
753 | * @phy: SAS PHY to remove |
754 | * | |
755 | * Removes the specified SAS PHY. If the SAS PHY has an | |
756 | * associated remote PHY it is removed before. | |
757 | */ | |
758 | void | |
759 | sas_phy_delete(struct sas_phy *phy) | |
760 | { | |
761 | struct device *dev = &phy->dev; | |
762 | ||
65c92b09 JB |
763 | /* this happens if the phy is still part of a port when deleted */ |
764 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
765 | |
766 | transport_remove_device(dev); | |
767 | device_del(dev); | |
768 | transport_destroy_device(dev); | |
92aab646 | 769 | put_device(dev); |
c7ebbbce CH |
770 | } |
771 | EXPORT_SYMBOL(sas_phy_delete); | |
772 | ||
773 | /** | |
eb44820c | 774 | * scsi_is_sas_phy - check if a struct device represents a SAS PHY |
c7ebbbce CH |
775 | * @dev: device to check |
776 | * | |
777 | * Returns: | |
778 | * %1 if the device represents a SAS PHY, %0 else | |
779 | */ | |
780 | int scsi_is_sas_phy(const struct device *dev) | |
781 | { | |
782 | return dev->release == sas_phy_release; | |
783 | } | |
784 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
785 | ||
65c92b09 JB |
786 | /* |
787 | * SAS Port attributes | |
788 | */ | |
789 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
790 | static ssize_t \ | |
ee959b00 TJ |
791 | show_sas_port_##name(struct device *dev, \ |
792 | struct device_attribute *attr, char *buf) \ | |
65c92b09 | 793 | { \ |
ee959b00 | 794 | struct sas_port *port = transport_class_to_sas_port(dev); \ |
65c92b09 JB |
795 | \ |
796 | return snprintf(buf, 20, format_string, cast port->field); \ | |
797 | } | |
798 | ||
799 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
800 | sas_port_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 801 | static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) |
65c92b09 JB |
802 | |
803 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
804 | ||
805 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
806 | "sas_port", NULL, NULL, NULL); | |
807 | ||
808 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
809 | { | |
810 | struct Scsi_Host *shost; | |
811 | struct sas_internal *i; | |
812 | ||
813 | if (!scsi_is_sas_port(dev)) | |
814 | return 0; | |
815 | shost = dev_to_shost(dev->parent); | |
816 | ||
817 | if (!shost->transportt) | |
818 | return 0; | |
819 | if (shost->transportt->host_attrs.ac.class != | |
820 | &sas_host_class.class) | |
821 | return 0; | |
822 | ||
823 | i = to_sas_internal(shost->transportt); | |
824 | return &i->port_attr_cont.ac == cont; | |
825 | } | |
826 | ||
827 | ||
828 | static void sas_port_release(struct device *dev) | |
829 | { | |
830 | struct sas_port *port = dev_to_sas_port(dev); | |
831 | ||
832 | BUG_ON(!list_empty(&port->phy_list)); | |
833 | ||
834 | put_device(dev->parent); | |
835 | kfree(port); | |
836 | } | |
837 | ||
838 | static void sas_port_create_link(struct sas_port *port, | |
839 | struct sas_phy *phy) | |
840 | { | |
21434966 DW |
841 | int res; |
842 | ||
843 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
71610f55 | 844 | dev_name(&phy->dev)); |
21434966 DW |
845 | if (res) |
846 | goto err; | |
847 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
848 | if (res) | |
849 | goto err; | |
850 | return; | |
851 | err: | |
852 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
cadbd4a5 | 853 | __func__, res); |
65c92b09 JB |
854 | } |
855 | ||
856 | static void sas_port_delete_link(struct sas_port *port, | |
857 | struct sas_phy *phy) | |
858 | { | |
71610f55 | 859 | sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev)); |
65c92b09 JB |
860 | sysfs_remove_link(&phy->dev.kobj, "port"); |
861 | } | |
862 | ||
863 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
864 | * | |
865 | * @parent: parent device | |
866 | * @port_id: port number | |
867 | * | |
868 | * Allocates a SAS port structure. It will be added to the device tree | |
869 | * below the device specified by @parent which must be either a Scsi_Host | |
870 | * or a sas_expander_device. | |
871 | * | |
872 | * Returns %NULL on error | |
873 | */ | |
874 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
875 | { | |
876 | struct Scsi_Host *shost = dev_to_shost(parent); | |
877 | struct sas_port *port; | |
878 | ||
879 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
880 | if (!port) | |
881 | return NULL; | |
882 | ||
883 | port->port_identifier = port_id; | |
884 | ||
885 | device_initialize(&port->dev); | |
886 | ||
887 | port->dev.parent = get_device(parent); | |
888 | port->dev.release = sas_port_release; | |
889 | ||
890 | mutex_init(&port->phy_list_mutex); | |
891 | INIT_LIST_HEAD(&port->phy_list); | |
892 | ||
893 | if (scsi_is_sas_expander_device(parent)) { | |
894 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 KS |
895 | dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no, |
896 | rphy->scsi_target_id, port->port_identifier); | |
65c92b09 | 897 | } else |
71610f55 KS |
898 | dev_set_name(&port->dev, "port-%d:%d", shost->host_no, |
899 | port->port_identifier); | |
65c92b09 JB |
900 | |
901 | transport_setup_device(&port->dev); | |
902 | ||
903 | return port; | |
904 | } | |
905 | EXPORT_SYMBOL(sas_port_alloc); | |
906 | ||
c9fefeb2 JB |
907 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
908 | * | |
909 | * @parent: parent device | |
910 | * | |
911 | * Allocates a SAS port structure and a number to go with it. This | |
912 | * interface is really for adapters where the port number has no | |
913 | * meansing, so the sas class should manage them. It will be added to | |
914 | * the device tree below the device specified by @parent which must be | |
915 | * either a Scsi_Host or a sas_expander_device. | |
916 | * | |
917 | * Returns %NULL on error | |
918 | */ | |
919 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
920 | { | |
921 | int index; | |
922 | struct Scsi_Host *shost = dev_to_shost(parent); | |
923 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
924 | ||
925 | /* FIXME: use idr for this eventually */ | |
926 | mutex_lock(&sas_host->lock); | |
927 | if (scsi_is_sas_expander_device(parent)) { | |
928 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
929 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
930 | ||
931 | index = exp->next_port_id++; | |
932 | } else | |
933 | index = sas_host->next_port_id++; | |
934 | mutex_unlock(&sas_host->lock); | |
935 | return sas_port_alloc(parent, index); | |
936 | } | |
937 | EXPORT_SYMBOL(sas_port_alloc_num); | |
938 | ||
65c92b09 JB |
939 | /** |
940 | * sas_port_add - add a SAS port to the device hierarchy | |
65c92b09 JB |
941 | * @port: port to be added |
942 | * | |
943 | * publishes a port to the rest of the system | |
944 | */ | |
945 | int sas_port_add(struct sas_port *port) | |
946 | { | |
947 | int error; | |
948 | ||
949 | /* No phys should be added until this is made visible */ | |
950 | BUG_ON(!list_empty(&port->phy_list)); | |
951 | ||
952 | error = device_add(&port->dev); | |
953 | ||
954 | if (error) | |
955 | return error; | |
956 | ||
957 | transport_add_device(&port->dev); | |
958 | transport_configure_device(&port->dev); | |
959 | ||
960 | return 0; | |
961 | } | |
962 | EXPORT_SYMBOL(sas_port_add); | |
963 | ||
964 | /** | |
eb44820c | 965 | * sas_port_free - free a SAS PORT |
65c92b09 JB |
966 | * @port: SAS PORT to free |
967 | * | |
968 | * Frees the specified SAS PORT. | |
969 | * | |
970 | * Note: | |
971 | * This function must only be called on a PORT that has not | |
af901ca1 | 972 | * successfully been added using sas_port_add(). |
65c92b09 JB |
973 | */ |
974 | void sas_port_free(struct sas_port *port) | |
975 | { | |
976 | transport_destroy_device(&port->dev); | |
977 | put_device(&port->dev); | |
978 | } | |
979 | EXPORT_SYMBOL(sas_port_free); | |
980 | ||
981 | /** | |
eb44820c | 982 | * sas_port_delete - remove SAS PORT |
65c92b09 JB |
983 | * @port: SAS PORT to remove |
984 | * | |
985 | * Removes the specified SAS PORT. If the SAS PORT has an | |
986 | * associated phys, unlink them from the port as well. | |
987 | */ | |
988 | void sas_port_delete(struct sas_port *port) | |
989 | { | |
990 | struct device *dev = &port->dev; | |
991 | struct sas_phy *phy, *tmp_phy; | |
992 | ||
993 | if (port->rphy) { | |
994 | sas_rphy_delete(port->rphy); | |
995 | port->rphy = NULL; | |
996 | } | |
997 | ||
998 | mutex_lock(&port->phy_list_mutex); | |
999 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
1000 | port_siblings) { | |
1001 | sas_port_delete_link(port, phy); | |
1002 | list_del_init(&phy->port_siblings); | |
1003 | } | |
1004 | mutex_unlock(&port->phy_list_mutex); | |
1005 | ||
a0e1b6ef JB |
1006 | if (port->is_backlink) { |
1007 | struct device *parent = port->dev.parent; | |
1008 | ||
71610f55 | 1009 | sysfs_remove_link(&port->dev.kobj, dev_name(parent)); |
a0e1b6ef JB |
1010 | port->is_backlink = 0; |
1011 | } | |
1012 | ||
65c92b09 JB |
1013 | transport_remove_device(dev); |
1014 | device_del(dev); | |
1015 | transport_destroy_device(dev); | |
1016 | put_device(dev); | |
1017 | } | |
1018 | EXPORT_SYMBOL(sas_port_delete); | |
1019 | ||
1020 | /** | |
eb44820c | 1021 | * scsi_is_sas_port - check if a struct device represents a SAS port |
65c92b09 JB |
1022 | * @dev: device to check |
1023 | * | |
1024 | * Returns: | |
1025 | * %1 if the device represents a SAS Port, %0 else | |
1026 | */ | |
1027 | int scsi_is_sas_port(const struct device *dev) | |
1028 | { | |
1029 | return dev->release == sas_port_release; | |
1030 | } | |
1031 | EXPORT_SYMBOL(scsi_is_sas_port); | |
1032 | ||
f41a0c44 DW |
1033 | /** |
1034 | * sas_port_get_phy - try to take a reference on a port member | |
1035 | * @port: port to check | |
1036 | */ | |
1037 | struct sas_phy *sas_port_get_phy(struct sas_port *port) | |
1038 | { | |
1039 | struct sas_phy *phy; | |
1040 | ||
1041 | mutex_lock(&port->phy_list_mutex); | |
1042 | if (list_empty(&port->phy_list)) | |
1043 | phy = NULL; | |
1044 | else { | |
1045 | struct list_head *ent = port->phy_list.next; | |
1046 | ||
1047 | phy = list_entry(ent, typeof(*phy), port_siblings); | |
1048 | get_device(&phy->dev); | |
1049 | } | |
1050 | mutex_unlock(&port->phy_list_mutex); | |
1051 | ||
1052 | return phy; | |
1053 | } | |
1054 | EXPORT_SYMBOL(sas_port_get_phy); | |
1055 | ||
65c92b09 JB |
1056 | /** |
1057 | * sas_port_add_phy - add another phy to a port to form a wide port | |
1058 | * @port: port to add the phy to | |
1059 | * @phy: phy to add | |
1060 | * | |
1061 | * When a port is initially created, it is empty (has no phys). All | |
1062 | * ports must have at least one phy to operated, and all wide ports | |
1063 | * must have at least two. The current code makes no difference | |
1064 | * between ports and wide ports, but the only object that can be | |
1065 | * connected to a remote device is a port, so ports must be formed on | |
1066 | * all devices with phys if they're connected to anything. | |
1067 | */ | |
1068 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
1069 | { | |
1070 | mutex_lock(&port->phy_list_mutex); | |
1071 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
1072 | /* make sure we're already on this port */ | |
1073 | struct sas_phy *tmp; | |
1074 | ||
1075 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
1076 | if (tmp == phy) | |
1077 | break; | |
1078 | /* If this trips, you added a phy that was already | |
1079 | * part of a different port */ | |
1080 | if (unlikely(tmp != phy)) { | |
71610f55 KS |
1081 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", |
1082 | dev_name(&phy->dev)); | |
65c92b09 JB |
1083 | BUG(); |
1084 | } | |
1085 | } else { | |
1086 | sas_port_create_link(port, phy); | |
1087 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
1088 | port->num_phys++; | |
1089 | } | |
1090 | mutex_unlock(&port->phy_list_mutex); | |
1091 | } | |
1092 | EXPORT_SYMBOL(sas_port_add_phy); | |
1093 | ||
1094 | /** | |
1095 | * sas_port_delete_phy - remove a phy from a port or wide port | |
1096 | * @port: port to remove the phy from | |
1097 | * @phy: phy to remove | |
1098 | * | |
1099 | * This operation is used for tearing down ports again. It must be | |
1100 | * done to every port or wide port before calling sas_port_delete. | |
1101 | */ | |
1102 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
1103 | { | |
1104 | mutex_lock(&port->phy_list_mutex); | |
1105 | sas_port_delete_link(port, phy); | |
1106 | list_del_init(&phy->port_siblings); | |
1107 | port->num_phys--; | |
1108 | mutex_unlock(&port->phy_list_mutex); | |
1109 | } | |
1110 | EXPORT_SYMBOL(sas_port_delete_phy); | |
1111 | ||
a0e1b6ef JB |
1112 | void sas_port_mark_backlink(struct sas_port *port) |
1113 | { | |
21434966 | 1114 | int res; |
a0e1b6ef JB |
1115 | struct device *parent = port->dev.parent->parent->parent; |
1116 | ||
1117 | if (port->is_backlink) | |
1118 | return; | |
1119 | port->is_backlink = 1; | |
21434966 | 1120 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
71610f55 | 1121 | dev_name(parent)); |
21434966 DW |
1122 | if (res) |
1123 | goto err; | |
1124 | return; | |
1125 | err: | |
1126 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
cadbd4a5 | 1127 | __func__, res); |
a0e1b6ef JB |
1128 | |
1129 | } | |
1130 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
1131 | ||
c7ebbbce CH |
1132 | /* |
1133 | * SAS remote PHY attributes. | |
1134 | */ | |
1135 | ||
1136 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
1137 | static ssize_t \ | |
ee959b00 TJ |
1138 | show_sas_rphy_##name(struct device *dev, \ |
1139 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1140 | { \ |
ee959b00 | 1141 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1142 | \ |
1143 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
1144 | } | |
1145 | ||
1146 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
1147 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1148 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1149 | show_sas_rphy_##name, NULL) |
1150 | ||
1151 | #define sas_rphy_show_protocol(field, name) \ | |
1152 | static ssize_t \ | |
ee959b00 TJ |
1153 | show_sas_rphy_##name(struct device *dev, \ |
1154 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1155 | { \ |
ee959b00 | 1156 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1157 | \ |
1158 | if (!rphy->field) \ | |
1159 | return snprintf(buf, 20, "none\n"); \ | |
1160 | return get_sas_protocol_names(rphy->field, buf); \ | |
1161 | } | |
1162 | ||
1163 | #define sas_rphy_protocol_attr(field, name) \ | |
1164 | sas_rphy_show_protocol(field, name) \ | |
ee959b00 | 1165 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1166 | show_sas_rphy_##name, NULL) |
1167 | ||
1168 | static ssize_t | |
ee959b00 TJ |
1169 | show_sas_rphy_device_type(struct device *dev, |
1170 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 1171 | { |
ee959b00 | 1172 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
c7ebbbce CH |
1173 | |
1174 | if (!rphy->identify.device_type) | |
1175 | return snprintf(buf, 20, "none\n"); | |
1176 | return get_sas_device_type_names( | |
1177 | rphy->identify.device_type, buf); | |
1178 | } | |
1179 | ||
ee959b00 | 1180 | static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO, |
c7ebbbce CH |
1181 | show_sas_rphy_device_type, NULL); |
1182 | ||
a0125641 | 1183 | static ssize_t |
ee959b00 TJ |
1184 | show_sas_rphy_enclosure_identifier(struct device *dev, |
1185 | struct device_attribute *attr, char *buf) | |
a0125641 | 1186 | { |
ee959b00 | 1187 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1188 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1189 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1190 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1191 | u64 identifier; | |
1192 | int error; | |
1193 | ||
a0125641 CH |
1194 | error = i->f->get_enclosure_identifier(rphy, &identifier); |
1195 | if (error) | |
1196 | return error; | |
1197 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
1198 | } | |
1199 | ||
ee959b00 | 1200 | static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, |
a0125641 CH |
1201 | show_sas_rphy_enclosure_identifier, NULL); |
1202 | ||
1203 | static ssize_t | |
ee959b00 TJ |
1204 | show_sas_rphy_bay_identifier(struct device *dev, |
1205 | struct device_attribute *attr, char *buf) | |
a0125641 | 1206 | { |
ee959b00 | 1207 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1208 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1209 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1210 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1211 | int val; | |
1212 | ||
a0125641 CH |
1213 | val = i->f->get_bay_identifier(rphy); |
1214 | if (val < 0) | |
1215 | return val; | |
1216 | return sprintf(buf, "%d\n", val); | |
1217 | } | |
1218 | ||
ee959b00 | 1219 | static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, |
a0125641 CH |
1220 | show_sas_rphy_bay_identifier, NULL); |
1221 | ||
c7ebbbce CH |
1222 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
1223 | initiator_port_protocols); | |
1224 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
1225 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
1226 | unsigned long long); | |
1227 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
cdc43ae3 | 1228 | sas_rphy_simple_attr(scsi_target_id, scsi_target_id, "%d\n", u32); |
c7ebbbce | 1229 | |
42ab0360 JB |
1230 | /* only need 8 bytes of data plus header (4 or 8) */ |
1231 | #define BUF_SIZE 64 | |
1232 | ||
1233 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1234 | { | |
1235 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
0f88009d | 1236 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); |
42ab0360 JB |
1237 | struct scsi_mode_data mode_data; |
1238 | int res, error; | |
1239 | ||
42ab0360 JB |
1240 | if (!buffer) |
1241 | return -ENOMEM; | |
1242 | ||
1243 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1244 | &mode_data, NULL); | |
1245 | ||
1246 | error = -EINVAL; | |
1247 | if (!scsi_status_is_good(res)) | |
1248 | goto out; | |
1249 | ||
1250 | msdata = buffer + mode_data.header_length + | |
1251 | mode_data.block_descriptor_length; | |
1252 | ||
1253 | if (msdata - buffer > BUF_SIZE - 8) | |
1254 | goto out; | |
1255 | ||
1256 | error = 0; | |
1257 | ||
1258 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1259 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1260 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1261 | ||
1262 | out: | |
1263 | kfree(buffer); | |
1264 | return error; | |
1265 | } | |
1266 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1267 | ||
79cb1819 JB |
1268 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1269 | "sas_end_device", NULL, NULL, NULL); | |
1270 | ||
42ab0360 JB |
1271 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1272 | static ssize_t \ | |
ee959b00 TJ |
1273 | show_sas_end_dev_##name(struct device *dev, \ |
1274 | struct device_attribute *attr, char *buf) \ | |
42ab0360 | 1275 | { \ |
ee959b00 | 1276 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
42ab0360 JB |
1277 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ |
1278 | \ | |
1279 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1280 | } | |
1281 | ||
1282 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1283 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1284 | static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ |
42ab0360 JB |
1285 | show_sas_end_dev_##name, NULL) |
1286 | ||
1287 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1288 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1289 | "%d\n", int); | |
1290 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1291 | "%d\n", int); | |
0f88009d JB |
1292 | sas_end_dev_simple_attr(tlr_supported, tlr_supported, |
1293 | "%d\n", int); | |
1294 | sas_end_dev_simple_attr(tlr_enabled, tlr_enabled, | |
1295 | "%d\n", int); | |
42ab0360 | 1296 | |
79cb1819 JB |
1297 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1298 | "sas_expander", NULL, NULL, NULL); | |
1299 | ||
1300 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1301 | static ssize_t \ | |
ee959b00 TJ |
1302 | show_sas_expander_##name(struct device *dev, \ |
1303 | struct device_attribute *attr, char *buf) \ | |
79cb1819 | 1304 | { \ |
ee959b00 | 1305 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
79cb1819 JB |
1306 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ |
1307 | \ | |
1308 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1309 | } | |
1310 | ||
1311 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1312 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1313 | static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \ |
79cb1819 JB |
1314 | show_sas_expander_##name, NULL) |
1315 | ||
1316 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1317 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1318 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1319 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1320 | "%s\n", char *); | |
1321 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1322 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1323 | unsigned int); | |
1324 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1325 | |
c7ebbbce | 1326 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1327 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1328 | |
1329 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1330 | { | |
1331 | struct Scsi_Host *shost; | |
1332 | struct sas_internal *i; | |
1333 | ||
1334 | if (!scsi_is_sas_rphy(dev)) | |
1335 | return 0; | |
1336 | shost = dev_to_shost(dev->parent->parent); | |
1337 | ||
1338 | if (!shost->transportt) | |
1339 | return 0; | |
1340 | if (shost->transportt->host_attrs.ac.class != | |
1341 | &sas_host_class.class) | |
1342 | return 0; | |
1343 | ||
1344 | i = to_sas_internal(shost->transportt); | |
1345 | return &i->rphy_attr_cont.ac == cont; | |
1346 | } | |
1347 | ||
42ab0360 JB |
1348 | static int sas_end_dev_match(struct attribute_container *cont, |
1349 | struct device *dev) | |
1350 | { | |
1351 | struct Scsi_Host *shost; | |
1352 | struct sas_internal *i; | |
1353 | struct sas_rphy *rphy; | |
1354 | ||
1355 | if (!scsi_is_sas_rphy(dev)) | |
1356 | return 0; | |
1357 | shost = dev_to_shost(dev->parent->parent); | |
1358 | rphy = dev_to_rphy(dev); | |
1359 | ||
1360 | if (!shost->transportt) | |
1361 | return 0; | |
1362 | if (shost->transportt->host_attrs.ac.class != | |
1363 | &sas_host_class.class) | |
1364 | return 0; | |
1365 | ||
1366 | i = to_sas_internal(shost->transportt); | |
1367 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1368 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1369 | } |
1370 | ||
79cb1819 JB |
1371 | static int sas_expander_match(struct attribute_container *cont, |
1372 | struct device *dev) | |
1373 | { | |
1374 | struct Scsi_Host *shost; | |
1375 | struct sas_internal *i; | |
1376 | struct sas_rphy *rphy; | |
1377 | ||
1378 | if (!scsi_is_sas_rphy(dev)) | |
1379 | return 0; | |
1380 | shost = dev_to_shost(dev->parent->parent); | |
1381 | rphy = dev_to_rphy(dev); | |
1382 | ||
1383 | if (!shost->transportt) | |
1384 | return 0; | |
1385 | if (shost->transportt->host_attrs.ac.class != | |
1386 | &sas_host_class.class) | |
1387 | return 0; | |
1388 | ||
1389 | i = to_sas_internal(shost->transportt); | |
1390 | return &i->expander_attr_cont.ac == cont && | |
1391 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1392 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1393 | } |
1394 | ||
2f8600df | 1395 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1396 | { |
1397 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1398 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce | 1399 | |
93c20a59 FT |
1400 | if (rphy->q) |
1401 | blk_cleanup_queue(rphy->q); | |
1402 | ||
c7ebbbce | 1403 | put_device(dev->parent); |
2f8600df | 1404 | kfree(edev); |
c7ebbbce CH |
1405 | } |
1406 | ||
2f8600df | 1407 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1408 | { |
2f8600df JB |
1409 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1410 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1411 | |
93c20a59 FT |
1412 | if (rphy->q) |
1413 | blk_cleanup_queue(rphy->q); | |
1414 | ||
2f8600df JB |
1415 | put_device(dev->parent); |
1416 | kfree(edev); | |
c7ebbbce | 1417 | } |
c7ebbbce | 1418 | |
c5943d36 | 1419 | /** |
183b8021 | 1420 | * sas_rphy_initialize - common rphy initialization |
c5943d36 JB |
1421 | * @rphy: rphy to initialise |
1422 | * | |
1423 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1424 | * initialise the common rphy component of each. | |
1425 | */ | |
1426 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1427 | { | |
1428 | INIT_LIST_HEAD(&rphy->list); | |
1429 | } | |
1430 | ||
42ab0360 JB |
1431 | /** |
1432 | * sas_end_device_alloc - allocate an rphy for an end device | |
eb44820c | 1433 | * @parent: which port |
42ab0360 JB |
1434 | * |
1435 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1436 | * | |
1437 | * Returns: | |
1438 | * SAS PHY allocated or %NULL if the allocation failed. | |
1439 | */ | |
65c92b09 | 1440 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1441 | { |
1442 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1443 | struct sas_end_device *rdev; | |
1444 | ||
1445 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1446 | if (!rdev) { | |
42ab0360 JB |
1447 | return NULL; |
1448 | } | |
1449 | ||
1450 | device_initialize(&rdev->rphy.dev); | |
1451 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1452 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1453 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1454 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
71610f55 KS |
1455 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d", |
1456 | shost->host_no, rphy->scsi_target_id, | |
1457 | parent->port_identifier); | |
65c92b09 | 1458 | } else |
71610f55 KS |
1459 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d", |
1460 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1461 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1462 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1463 | transport_setup_device(&rdev->rphy.dev); |
1464 | ||
1465 | return &rdev->rphy; | |
1466 | } | |
1467 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1468 | ||
79cb1819 JB |
1469 | /** |
1470 | * sas_expander_alloc - allocate an rphy for an end device | |
eb44820c RL |
1471 | * @parent: which port |
1472 | * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE | |
79cb1819 JB |
1473 | * |
1474 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1475 | * | |
1476 | * Returns: | |
1477 | * SAS PHY allocated or %NULL if the allocation failed. | |
1478 | */ | |
65c92b09 | 1479 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1480 | enum sas_device_type type) |
1481 | { | |
1482 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1483 | struct sas_expander_device *rdev; | |
1484 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1485 | ||
1486 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1487 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1488 | ||
1489 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1490 | if (!rdev) { | |
79cb1819 JB |
1491 | return NULL; |
1492 | } | |
1493 | ||
1494 | device_initialize(&rdev->rphy.dev); | |
1495 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1496 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1497 | mutex_lock(&sas_host->lock); |
1498 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1499 | mutex_unlock(&sas_host->lock); | |
71610f55 KS |
1500 | dev_set_name(&rdev->rphy.dev, "expander-%d:%d", |
1501 | shost->host_no, rdev->rphy.scsi_target_id); | |
79cb1819 | 1502 | rdev->rphy.identify.device_type = type; |
c5943d36 | 1503 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1504 | transport_setup_device(&rdev->rphy.dev); |
1505 | ||
1506 | return &rdev->rphy; | |
1507 | } | |
1508 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1509 | |
c7ebbbce | 1510 | /** |
eb44820c | 1511 | * sas_rphy_add - add a SAS remote PHY to the device hierarchy |
c7ebbbce CH |
1512 | * @rphy: The remote PHY to be added |
1513 | * | |
1514 | * Publishes a SAS remote PHY to the rest of the system. | |
1515 | */ | |
1516 | int sas_rphy_add(struct sas_rphy *rphy) | |
1517 | { | |
65c92b09 | 1518 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1519 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1520 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1521 | struct sas_identify *identify = &rphy->identify; | |
1522 | int error; | |
1523 | ||
1524 | if (parent->rphy) | |
1525 | return -ENXIO; | |
1526 | parent->rphy = rphy; | |
1527 | ||
1528 | error = device_add(&rphy->dev); | |
1529 | if (error) | |
1530 | return error; | |
1531 | transport_add_device(&rphy->dev); | |
1532 | transport_configure_device(&rphy->dev); | |
39dca558 | 1533 | if (sas_bsg_initialize(shost, rphy)) |
71610f55 | 1534 | printk("fail to a bsg device %s\n", dev_name(&rphy->dev)); |
39dca558 | 1535 | |
c7ebbbce | 1536 | |
e02f3f59 | 1537 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1538 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1539 | if (identify->device_type == SAS_END_DEVICE && | |
1540 | (identify->target_port_protocols & | |
1541 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1542 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1543 | else if (identify->device_type == SAS_END_DEVICE) |
1544 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1545 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1546 | |
79cb1819 JB |
1547 | if (identify->device_type == SAS_END_DEVICE && |
1548 | rphy->scsi_target_id != -1) { | |
2fc62e2a DW |
1549 | int lun; |
1550 | ||
1551 | if (identify->target_port_protocols & SAS_PROTOCOL_SSP) | |
1552 | lun = SCAN_WILD_CARD; | |
1553 | else | |
1554 | lun = 0; | |
1555 | ||
1d645088 HR |
1556 | scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, lun, |
1557 | SCSI_SCAN_INITIAL); | |
c7ebbbce CH |
1558 | } |
1559 | ||
1560 | return 0; | |
1561 | } | |
1562 | EXPORT_SYMBOL(sas_rphy_add); | |
1563 | ||
1564 | /** | |
eb44820c RL |
1565 | * sas_rphy_free - free a SAS remote PHY |
1566 | * @rphy: SAS remote PHY to free | |
c7ebbbce CH |
1567 | * |
1568 | * Frees the specified SAS remote PHY. | |
1569 | * | |
1570 | * Note: | |
1571 | * This function must only be called on a remote | |
af901ca1 | 1572 | * PHY that has not successfully been added using |
6f63caae | 1573 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
c7ebbbce CH |
1574 | */ |
1575 | void sas_rphy_free(struct sas_rphy *rphy) | |
1576 | { | |
92aab646 | 1577 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1578 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1579 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1580 | ||
e02f3f59 | 1581 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1582 | list_del(&rphy->list); |
e02f3f59 | 1583 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1584 | |
92aab646 | 1585 | transport_destroy_device(dev); |
2f8600df | 1586 | |
92aab646 | 1587 | put_device(dev); |
c7ebbbce CH |
1588 | } |
1589 | EXPORT_SYMBOL(sas_rphy_free); | |
1590 | ||
1591 | /** | |
eb44820c | 1592 | * sas_rphy_delete - remove and free SAS remote PHY |
6f63caae | 1593 | * @rphy: SAS remote PHY to remove and free |
c7ebbbce | 1594 | * |
6f63caae | 1595 | * Removes the specified SAS remote PHY and frees it. |
c7ebbbce CH |
1596 | */ |
1597 | void | |
1598 | sas_rphy_delete(struct sas_rphy *rphy) | |
6f63caae DW |
1599 | { |
1600 | sas_rphy_remove(rphy); | |
1601 | sas_rphy_free(rphy); | |
1602 | } | |
1603 | EXPORT_SYMBOL(sas_rphy_delete); | |
1604 | ||
87c8331f DW |
1605 | /** |
1606 | * sas_rphy_unlink - unlink SAS remote PHY | |
1607 | * @rphy: SAS remote phy to unlink from its parent port | |
1608 | * | |
1609 | * Removes port reference to an rphy | |
1610 | */ | |
1611 | void sas_rphy_unlink(struct sas_rphy *rphy) | |
1612 | { | |
1613 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); | |
1614 | ||
1615 | parent->rphy = NULL; | |
1616 | } | |
1617 | EXPORT_SYMBOL(sas_rphy_unlink); | |
1618 | ||
6f63caae | 1619 | /** |
eb44820c | 1620 | * sas_rphy_remove - remove SAS remote PHY |
6f63caae DW |
1621 | * @rphy: SAS remote phy to remove |
1622 | * | |
1623 | * Removes the specified SAS remote PHY. | |
1624 | */ | |
1625 | void | |
1626 | sas_rphy_remove(struct sas_rphy *rphy) | |
c7ebbbce CH |
1627 | { |
1628 | struct device *dev = &rphy->dev; | |
c7ebbbce | 1629 | |
d4054239 CH |
1630 | switch (rphy->identify.device_type) { |
1631 | case SAS_END_DEVICE: | |
1632 | scsi_remove_target(dev); | |
1633 | break; | |
1634 | case SAS_EDGE_EXPANDER_DEVICE: | |
1635 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1636 | sas_remove_children(dev); |
d4054239 CH |
1637 | break; |
1638 | default: | |
1639 | break; | |
1640 | } | |
c7ebbbce | 1641 | |
87c8331f | 1642 | sas_rphy_unlink(rphy); |
651a0136 CH |
1643 | if (rphy->q) |
1644 | bsg_unregister_queue(rphy->q); | |
fe8b2304 CH |
1645 | transport_remove_device(dev); |
1646 | device_del(dev); | |
c7ebbbce | 1647 | } |
6f63caae | 1648 | EXPORT_SYMBOL(sas_rphy_remove); |
c7ebbbce CH |
1649 | |
1650 | /** | |
eb44820c | 1651 | * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY |
c7ebbbce CH |
1652 | * @dev: device to check |
1653 | * | |
1654 | * Returns: | |
1655 | * %1 if the device represents a SAS remote PHY, %0 else | |
1656 | */ | |
1657 | int scsi_is_sas_rphy(const struct device *dev) | |
1658 | { | |
2f8600df JB |
1659 | return dev->release == sas_end_device_release || |
1660 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1661 | } |
1662 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1663 | ||
1664 | ||
1665 | /* | |
1666 | * SCSI scan helper | |
1667 | */ | |
1668 | ||
e02f3f59 | 1669 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
9cb78c16 | 1670 | uint id, u64 lun) |
c7ebbbce CH |
1671 | { |
1672 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1673 | struct sas_rphy *rphy; | |
c7ebbbce | 1674 | |
e02f3f59 | 1675 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1676 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1677 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1678 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1679 | continue; |
1680 | ||
e8bf3941 | 1681 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1682 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
1d645088 HR |
1683 | scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, |
1684 | lun, SCSI_SCAN_MANUAL); | |
e02f3f59 | 1685 | } |
c7ebbbce | 1686 | } |
e02f3f59 | 1687 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1688 | |
e02f3f59 | 1689 | return 0; |
c7ebbbce CH |
1690 | } |
1691 | ||
1692 | ||
1693 | /* | |
1694 | * Setup / Teardown code | |
1695 | */ | |
1696 | ||
d24e1eeb | 1697 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
ee959b00 | 1698 | i->private_##attrb[count] = dev_attr_##field; \ |
42ab0360 | 1699 | i->private_##attrb[count].attr.mode = perm; \ |
42ab0360 JB |
1700 | i->attrb[count] = &i->private_##attrb[count]; \ |
1701 | if (test) \ | |
1702 | count++ | |
1703 | ||
d24e1eeb | 1704 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
ee959b00 | 1705 | i->private_##attrb[count] = dev_attr_##field; \ |
d24e1eeb JB |
1706 | i->private_##attrb[count].attr.mode = perm; \ |
1707 | if (ro_test) { \ | |
1708 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1709 | i->private_##attrb[count].store = NULL; \ | |
1710 | } \ | |
1711 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1712 | if (test) \ | |
1713 | count++ | |
42ab0360 JB |
1714 | |
1715 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1716 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1717 | |
dd9fbb52 | 1718 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1719 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1720 | |
65c92b09 | 1721 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1722 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1723 | |
d24e1eeb JB |
1724 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1725 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1726 | !i->f->set_phy_speed, S_IRUGO) | |
1727 | ||
acbf167d DW |
1728 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
1729 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1730 | !i->f->func, S_IRUGO) | |
1731 | ||
65c92b09 JB |
1732 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1733 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1734 | ||
1735 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1736 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1737 | |
65c92b09 | 1738 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
fe3b5bfe | 1739 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
07ba3a95 | 1740 | |
65c92b09 | 1741 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
fe3b5bfe | 1742 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
dd9fbb52 | 1743 | |
42ab0360 JB |
1744 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1745 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1746 | |
79cb1819 JB |
1747 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1748 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1749 | ||
c7ebbbce | 1750 | /** |
eb44820c | 1751 | * sas_attach_transport - instantiate SAS transport template |
c7ebbbce CH |
1752 | * @ft: SAS transport class function template |
1753 | */ | |
1754 | struct scsi_transport_template * | |
1755 | sas_attach_transport(struct sas_function_template *ft) | |
1756 | { | |
1757 | struct sas_internal *i; | |
1758 | int count; | |
1759 | ||
24669f75 | 1760 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1761 | if (!i) |
1762 | return NULL; | |
c7ebbbce | 1763 | |
e02f3f59 | 1764 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1765 | |
1766 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1767 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1768 | i->t.host_attrs.ac.match = sas_host_match; | |
1769 | transport_container_register(&i->t.host_attrs); | |
1770 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1771 | ||
1772 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1773 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1774 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1775 | transport_container_register(&i->phy_attr_cont); | |
1776 | ||
65c92b09 JB |
1777 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1778 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1779 | i->port_attr_cont.ac.match = sas_port_match; | |
1780 | transport_container_register(&i->port_attr_cont); | |
1781 | ||
c7ebbbce CH |
1782 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1783 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1784 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1785 | transport_container_register(&i->rphy_attr_cont); | |
1786 | ||
42ab0360 JB |
1787 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1788 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1789 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1790 | transport_container_register(&i->end_dev_attr_cont); | |
1791 | ||
79cb1819 JB |
1792 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1793 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1794 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1795 | transport_container_register(&i->expander_attr_cont); | |
1796 | ||
c7ebbbce CH |
1797 | i->f = ft; |
1798 | ||
c7ebbbce | 1799 | count = 0; |
65c92b09 JB |
1800 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1801 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1802 | SETUP_PHY_ATTRIBUTE(device_type); | |
1803 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1804 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
1805 | //SETUP_PHY_ATTRIBUTE(port_identifier); | |
1806 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); | |
1807 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1808 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1809 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1810 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1811 | |
1812 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1813 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1814 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1815 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1816 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1817 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1818 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1819 | i->phy_attrs[count] = NULL; |
1820 | ||
65c92b09 JB |
1821 | count = 0; |
1822 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1823 | i->port_attrs[count] = NULL; | |
1824 | ||
c7ebbbce CH |
1825 | count = 0; |
1826 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1827 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1828 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1829 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1830 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
cdc43ae3 | 1831 | SETUP_RPORT_ATTRIBUTE(rphy_scsi_target_id); |
dd9fbb52 JB |
1832 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1833 | get_enclosure_identifier); | |
1834 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1835 | get_bay_identifier); | |
c7ebbbce CH |
1836 | i->rphy_attrs[count] = NULL; |
1837 | ||
42ab0360 JB |
1838 | count = 0; |
1839 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1840 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1841 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
0f88009d JB |
1842 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_supported); |
1843 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_enabled); | |
42ab0360 JB |
1844 | i->end_dev_attrs[count] = NULL; |
1845 | ||
79cb1819 JB |
1846 | count = 0; |
1847 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1848 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1849 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1850 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1851 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1852 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1853 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1854 | i->expander_attrs[count] = NULL; | |
1855 | ||
c7ebbbce CH |
1856 | return &i->t; |
1857 | } | |
1858 | EXPORT_SYMBOL(sas_attach_transport); | |
1859 | ||
1860 | /** | |
eb44820c | 1861 | * sas_release_transport - release SAS transport template instance |
c7ebbbce CH |
1862 | * @t: transport template instance |
1863 | */ | |
1864 | void sas_release_transport(struct scsi_transport_template *t) | |
1865 | { | |
1866 | struct sas_internal *i = to_sas_internal(t); | |
1867 | ||
1868 | transport_container_unregister(&i->t.host_attrs); | |
1869 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1870 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1871 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1872 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1873 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1874 | |
1875 | kfree(i); | |
1876 | } | |
1877 | EXPORT_SYMBOL(sas_release_transport); | |
1878 | ||
1879 | static __init int sas_transport_init(void) | |
1880 | { | |
1881 | int error; | |
1882 | ||
1883 | error = transport_class_register(&sas_host_class); | |
1884 | if (error) | |
1885 | goto out; | |
1886 | error = transport_class_register(&sas_phy_class); | |
1887 | if (error) | |
1888 | goto out_unregister_transport; | |
65c92b09 | 1889 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1890 | if (error) |
1891 | goto out_unregister_phy; | |
65c92b09 JB |
1892 | error = transport_class_register(&sas_rphy_class); |
1893 | if (error) | |
1894 | goto out_unregister_port; | |
42ab0360 JB |
1895 | error = transport_class_register(&sas_end_dev_class); |
1896 | if (error) | |
1897 | goto out_unregister_rphy; | |
79cb1819 JB |
1898 | error = transport_class_register(&sas_expander_class); |
1899 | if (error) | |
1900 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1901 | |
1902 | return 0; | |
1903 | ||
79cb1819 JB |
1904 | out_unregister_end_dev: |
1905 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1906 | out_unregister_rphy: |
1907 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1908 | out_unregister_port: |
1909 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1910 | out_unregister_phy: |
1911 | transport_class_unregister(&sas_phy_class); | |
1912 | out_unregister_transport: | |
1913 | transport_class_unregister(&sas_host_class); | |
1914 | out: | |
1915 | return error; | |
1916 | ||
1917 | } | |
1918 | ||
1919 | static void __exit sas_transport_exit(void) | |
1920 | { | |
1921 | transport_class_unregister(&sas_host_class); | |
1922 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1923 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1924 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1925 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1926 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1927 | } |
1928 | ||
1929 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1930 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
1931 | MODULE_LICENSE("GPL"); |
1932 | ||
1933 | module_init(sas_transport_init); | |
1934 | module_exit(sas_transport_exit); |