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59bd9ded | 1 | // SPDX-License-Identifier: GPL-2.0-only |
c7ebbbce | 2 | /* |
a0125641 | 3 | * Copyright (C) 2005-2006 Dell Inc. |
c7ebbbce CH |
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), |
aae3b069 | 201 | sas_smp_dispatch, NULL, 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, | |
aae3b069 | 210 | sas_smp_dispatch, NULL, 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 | |
7aa68e80 | 216 | return 0; |
b6aff669 JB |
217 | } |
218 | ||
c7ebbbce CH |
219 | /* |
220 | * SAS host attributes | |
221 | */ | |
222 | ||
37be6eeb | 223 | static int sas_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 224 | struct device *cdev) |
c7ebbbce CH |
225 | { |
226 | struct Scsi_Host *shost = dev_to_shost(dev); | |
227 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
228 | ||
229 | INIT_LIST_HEAD(&sas_host->rphy_list); | |
e02f3f59 | 230 | mutex_init(&sas_host->lock); |
c7ebbbce | 231 | sas_host->next_target_id = 0; |
79cb1819 | 232 | sas_host->next_expander_id = 0; |
c9fefeb2 | 233 | sas_host->next_port_id = 0; |
7aa68e80 | 234 | |
39dca558 | 235 | if (sas_bsg_initialize(shost, NULL)) |
7aa68e80 FT |
236 | dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n", |
237 | shost->host_no); | |
238 | ||
c7ebbbce CH |
239 | return 0; |
240 | } | |
241 | ||
b6aff669 | 242 | static int sas_host_remove(struct transport_container *tc, struct device *dev, |
ee959b00 | 243 | struct device *cdev) |
b6aff669 JB |
244 | { |
245 | struct Scsi_Host *shost = dev_to_shost(dev); | |
651a0136 | 246 | struct request_queue *q = to_sas_host_attrs(shost)->q; |
b6aff669 | 247 | |
5e28b8d8 | 248 | bsg_remove_queue(q); |
b6aff669 JB |
249 | return 0; |
250 | } | |
251 | ||
c7ebbbce | 252 | static DECLARE_TRANSPORT_CLASS(sas_host_class, |
b6aff669 | 253 | "sas_host", sas_host_setup, sas_host_remove, NULL); |
c7ebbbce CH |
254 | |
255 | static int sas_host_match(struct attribute_container *cont, | |
256 | struct device *dev) | |
257 | { | |
258 | struct Scsi_Host *shost; | |
259 | struct sas_internal *i; | |
260 | ||
261 | if (!scsi_is_host_device(dev)) | |
262 | return 0; | |
263 | shost = dev_to_shost(dev); | |
264 | ||
265 | if (!shost->transportt) | |
266 | return 0; | |
267 | if (shost->transportt->host_attrs.ac.class != | |
268 | &sas_host_class.class) | |
269 | return 0; | |
270 | ||
271 | i = to_sas_internal(shost->transportt); | |
272 | return &i->t.host_attrs.ac == cont; | |
273 | } | |
274 | ||
275 | static int do_sas_phy_delete(struct device *dev, void *data) | |
276 | { | |
65c92b09 JB |
277 | int pass = (int)(unsigned long)data; |
278 | ||
279 | if (pass == 0 && scsi_is_sas_port(dev)) | |
280 | sas_port_delete(dev_to_sas_port(dev)); | |
281 | else if (pass == 1 && scsi_is_sas_phy(dev)) | |
c7ebbbce CH |
282 | sas_phy_delete(dev_to_phy(dev)); |
283 | return 0; | |
284 | } | |
285 | ||
65c92b09 | 286 | /** |
eb44820c | 287 | * sas_remove_children - tear down a devices SAS data structures |
65c92b09 JB |
288 | * @dev: device belonging to the sas object |
289 | * | |
290 | * Removes all SAS PHYs and remote PHYs for a given object | |
291 | */ | |
292 | void sas_remove_children(struct device *dev) | |
293 | { | |
294 | device_for_each_child(dev, (void *)0, do_sas_phy_delete); | |
295 | device_for_each_child(dev, (void *)1, do_sas_phy_delete); | |
296 | } | |
297 | EXPORT_SYMBOL(sas_remove_children); | |
298 | ||
c7ebbbce | 299 | /** |
eb44820c | 300 | * sas_remove_host - tear down a Scsi_Host's SAS data structures |
c7ebbbce CH |
301 | * @shost: Scsi Host that is torn down |
302 | * | |
c5ce0abe JT |
303 | * Removes all SAS PHYs and remote PHYs for a given Scsi_Host and remove the |
304 | * Scsi_Host as well. | |
305 | * | |
306 | * Note: Do not call scsi_remove_host() on the Scsi_Host any more, as it is | |
307 | * already removed. | |
c7ebbbce CH |
308 | */ |
309 | void sas_remove_host(struct Scsi_Host *shost) | |
310 | { | |
65c92b09 | 311 | sas_remove_children(&shost->shost_gendev); |
c5ce0abe | 312 | scsi_remove_host(shost); |
c7ebbbce CH |
313 | } |
314 | EXPORT_SYMBOL(sas_remove_host); | |
315 | ||
bcf508c1 JB |
316 | /** |
317 | * sas_get_address - return the SAS address of the device | |
318 | * @sdev: scsi device | |
319 | * | |
320 | * Returns the SAS address of the scsi device | |
321 | */ | |
322 | u64 sas_get_address(struct scsi_device *sdev) | |
323 | { | |
324 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
325 | ||
326 | return rdev->rphy.identify.sas_address; | |
327 | } | |
328 | EXPORT_SYMBOL(sas_get_address); | |
329 | ||
0f88009d JB |
330 | /** |
331 | * sas_tlr_supported - checking TLR bit in vpd 0x90 | |
332 | * @sdev: scsi device struct | |
333 | * | |
334 | * Check Transport Layer Retries are supported or not. | |
335 | * If vpd page 0x90 is present, TRL is supported. | |
336 | * | |
337 | */ | |
338 | unsigned int | |
339 | sas_tlr_supported(struct scsi_device *sdev) | |
340 | { | |
341 | const int vpd_len = 32; | |
342 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
343 | char *buffer = kzalloc(vpd_len, GFP_KERNEL); | |
344 | int ret = 0; | |
345 | ||
e1779b4f BVA |
346 | if (!buffer) |
347 | goto out; | |
348 | ||
0f88009d JB |
349 | if (scsi_get_vpd_page(sdev, 0x90, buffer, vpd_len)) |
350 | goto out; | |
351 | ||
352 | /* | |
353 | * Magic numbers: the VPD Protocol page (0x90) | |
354 | * has a 4 byte header and then one entry per device port | |
355 | * the TLR bit is at offset 8 on each port entry | |
356 | * if we take the first port, that's at total offset 12 | |
357 | */ | |
358 | ret = buffer[12] & 0x01; | |
359 | ||
360 | out: | |
361 | kfree(buffer); | |
362 | rdev->tlr_supported = ret; | |
363 | return ret; | |
364 | ||
365 | } | |
366 | EXPORT_SYMBOL_GPL(sas_tlr_supported); | |
367 | ||
368 | /** | |
369 | * sas_disable_tlr - setting TLR flags | |
370 | * @sdev: scsi device struct | |
371 | * | |
372 | * Seting tlr_enabled flag to 0. | |
373 | * | |
374 | */ | |
375 | void | |
376 | sas_disable_tlr(struct scsi_device *sdev) | |
377 | { | |
378 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
379 | ||
380 | rdev->tlr_enabled = 0; | |
381 | } | |
382 | EXPORT_SYMBOL_GPL(sas_disable_tlr); | |
383 | ||
384 | /** | |
385 | * sas_enable_tlr - setting TLR flags | |
386 | * @sdev: scsi device struct | |
387 | * | |
388 | * Seting tlr_enabled flag 1. | |
389 | * | |
390 | */ | |
391 | void sas_enable_tlr(struct scsi_device *sdev) | |
392 | { | |
393 | unsigned int tlr_supported = 0; | |
394 | tlr_supported = sas_tlr_supported(sdev); | |
395 | ||
396 | if (tlr_supported) { | |
397 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
398 | ||
399 | rdev->tlr_enabled = 1; | |
400 | } | |
401 | ||
402 | return; | |
403 | } | |
404 | EXPORT_SYMBOL_GPL(sas_enable_tlr); | |
405 | ||
406 | unsigned int sas_is_tlr_enabled(struct scsi_device *sdev) | |
407 | { | |
408 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); | |
409 | return rdev->tlr_enabled; | |
410 | } | |
411 | EXPORT_SYMBOL_GPL(sas_is_tlr_enabled); | |
c7ebbbce CH |
412 | |
413 | /* | |
65c92b09 | 414 | * SAS Phy attributes |
c7ebbbce CH |
415 | */ |
416 | ||
417 | #define sas_phy_show_simple(field, name, format_string, cast) \ | |
418 | static ssize_t \ | |
ee959b00 TJ |
419 | show_sas_phy_##name(struct device *dev, \ |
420 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 421 | { \ |
ee959b00 | 422 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
423 | \ |
424 | return snprintf(buf, 20, format_string, cast phy->field); \ | |
425 | } | |
426 | ||
427 | #define sas_phy_simple_attr(field, name, format_string, type) \ | |
428 | sas_phy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 429 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
430 | |
431 | #define sas_phy_show_protocol(field, name) \ | |
432 | static ssize_t \ | |
ee959b00 TJ |
433 | show_sas_phy_##name(struct device *dev, \ |
434 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 435 | { \ |
ee959b00 | 436 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
437 | \ |
438 | if (!phy->field) \ | |
439 | return snprintf(buf, 20, "none\n"); \ | |
440 | return get_sas_protocol_names(phy->field, buf); \ | |
441 | } | |
442 | ||
443 | #define sas_phy_protocol_attr(field, name) \ | |
444 | sas_phy_show_protocol(field, name) \ | |
ee959b00 | 445 | static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL) |
c7ebbbce CH |
446 | |
447 | #define sas_phy_show_linkspeed(field) \ | |
448 | static ssize_t \ | |
ee959b00 TJ |
449 | show_sas_phy_##field(struct device *dev, \ |
450 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 451 | { \ |
ee959b00 | 452 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c7ebbbce CH |
453 | \ |
454 | return get_sas_linkspeed_names(phy->field, buf); \ | |
455 | } | |
456 | ||
d24e1eeb JB |
457 | /* Fudge to tell if we're minimum or maximum */ |
458 | #define sas_phy_store_linkspeed(field) \ | |
459 | static ssize_t \ | |
ee959b00 TJ |
460 | store_sas_phy_##field(struct device *dev, \ |
461 | struct device_attribute *attr, \ | |
462 | const char *buf, size_t count) \ | |
d24e1eeb | 463 | { \ |
ee959b00 | 464 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
d24e1eeb JB |
465 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
466 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
467 | u32 value; \ | |
468 | struct sas_phy_linkrates rates = {0}; \ | |
469 | int error; \ | |
470 | \ | |
471 | error = set_sas_linkspeed_names(&value, buf); \ | |
472 | if (error) \ | |
473 | return error; \ | |
474 | rates.field = value; \ | |
475 | error = i->f->set_phy_speed(phy, &rates); \ | |
476 | \ | |
477 | return error ? error : count; \ | |
478 | } | |
479 | ||
480 | #define sas_phy_linkspeed_rw_attr(field) \ | |
481 | sas_phy_show_linkspeed(field) \ | |
482 | sas_phy_store_linkspeed(field) \ | |
ee959b00 | 483 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \ |
d24e1eeb JB |
484 | store_sas_phy_##field) |
485 | ||
c7ebbbce CH |
486 | #define sas_phy_linkspeed_attr(field) \ |
487 | sas_phy_show_linkspeed(field) \ | |
ee959b00 | 488 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c7ebbbce | 489 | |
d24e1eeb | 490 | |
c3ee74c4 CH |
491 | #define sas_phy_show_linkerror(field) \ |
492 | static ssize_t \ | |
ee959b00 TJ |
493 | show_sas_phy_##field(struct device *dev, \ |
494 | struct device_attribute *attr, char *buf) \ | |
c3ee74c4 | 495 | { \ |
ee959b00 | 496 | struct sas_phy *phy = transport_class_to_phy(dev); \ |
c3ee74c4 CH |
497 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \ |
498 | struct sas_internal *i = to_sas_internal(shost->transportt); \ | |
499 | int error; \ | |
500 | \ | |
dd9fbb52 | 501 | error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \ |
c3ee74c4 CH |
502 | if (error) \ |
503 | return error; \ | |
504 | return snprintf(buf, 20, "%u\n", phy->field); \ | |
505 | } | |
506 | ||
507 | #define sas_phy_linkerror_attr(field) \ | |
508 | sas_phy_show_linkerror(field) \ | |
ee959b00 | 509 | static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL) |
c3ee74c4 CH |
510 | |
511 | ||
c7ebbbce | 512 | static ssize_t |
ee959b00 TJ |
513 | show_sas_device_type(struct device *dev, |
514 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 515 | { |
ee959b00 | 516 | struct sas_phy *phy = transport_class_to_phy(dev); |
c7ebbbce CH |
517 | |
518 | if (!phy->identify.device_type) | |
519 | return snprintf(buf, 20, "none\n"); | |
520 | return get_sas_device_type_names(phy->identify.device_type, buf); | |
521 | } | |
ee959b00 | 522 | static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL); |
c7ebbbce | 523 | |
ee959b00 | 524 | static ssize_t do_sas_phy_enable(struct device *dev, |
acbf167d DW |
525 | size_t count, int enable) |
526 | { | |
ee959b00 | 527 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
528 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
529 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
530 | int error; | |
531 | ||
532 | error = i->f->phy_enable(phy, enable); | |
533 | if (error) | |
534 | return error; | |
535 | phy->enabled = enable; | |
536 | return count; | |
537 | }; | |
538 | ||
ee959b00 TJ |
539 | static ssize_t |
540 | store_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
541 | const char *buf, size_t count) | |
acbf167d DW |
542 | { |
543 | if (count < 1) | |
544 | return -EINVAL; | |
545 | ||
546 | switch (buf[0]) { | |
547 | case '0': | |
ee959b00 | 548 | do_sas_phy_enable(dev, count, 0); |
acbf167d DW |
549 | break; |
550 | case '1': | |
ee959b00 | 551 | do_sas_phy_enable(dev, count, 1); |
acbf167d DW |
552 | break; |
553 | default: | |
554 | return -EINVAL; | |
555 | } | |
556 | ||
557 | return count; | |
558 | } | |
559 | ||
ee959b00 TJ |
560 | static ssize_t |
561 | show_sas_phy_enable(struct device *dev, struct device_attribute *attr, | |
562 | char *buf) | |
acbf167d | 563 | { |
ee959b00 | 564 | struct sas_phy *phy = transport_class_to_phy(dev); |
acbf167d DW |
565 | |
566 | return snprintf(buf, 20, "%d", phy->enabled); | |
567 | } | |
568 | ||
ee959b00 | 569 | static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable, |
acbf167d DW |
570 | store_sas_phy_enable); |
571 | ||
ee959b00 TJ |
572 | static ssize_t |
573 | do_sas_phy_reset(struct device *dev, size_t count, int hard_reset) | |
07ba3a95 | 574 | { |
ee959b00 | 575 | struct sas_phy *phy = transport_class_to_phy(dev); |
07ba3a95 CH |
576 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
577 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
578 | int error; | |
579 | ||
07ba3a95 CH |
580 | error = i->f->phy_reset(phy, hard_reset); |
581 | if (error) | |
582 | return error; | |
16d3db1b | 583 | phy->enabled = 1; |
07ba3a95 CH |
584 | return count; |
585 | }; | |
586 | ||
ee959b00 TJ |
587 | static ssize_t |
588 | store_sas_link_reset(struct device *dev, struct device_attribute *attr, | |
589 | const char *buf, size_t count) | |
07ba3a95 | 590 | { |
ee959b00 | 591 | return do_sas_phy_reset(dev, count, 0); |
07ba3a95 | 592 | } |
ee959b00 | 593 | static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset); |
07ba3a95 | 594 | |
ee959b00 TJ |
595 | static ssize_t |
596 | store_sas_hard_reset(struct device *dev, struct device_attribute *attr, | |
597 | const char *buf, size_t count) | |
07ba3a95 | 598 | { |
ee959b00 | 599 | return do_sas_phy_reset(dev, count, 1); |
07ba3a95 | 600 | } |
ee959b00 | 601 | static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset); |
07ba3a95 | 602 | |
c7ebbbce CH |
603 | sas_phy_protocol_attr(identify.initiator_port_protocols, |
604 | initiator_port_protocols); | |
605 | sas_phy_protocol_attr(identify.target_port_protocols, | |
606 | target_port_protocols); | |
607 | sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
608 | unsigned long long); | |
609 | sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
c7ebbbce CH |
610 | sas_phy_linkspeed_attr(negotiated_linkrate); |
611 | sas_phy_linkspeed_attr(minimum_linkrate_hw); | |
d24e1eeb | 612 | sas_phy_linkspeed_rw_attr(minimum_linkrate); |
c7ebbbce | 613 | sas_phy_linkspeed_attr(maximum_linkrate_hw); |
d24e1eeb | 614 | sas_phy_linkspeed_rw_attr(maximum_linkrate); |
c3ee74c4 CH |
615 | sas_phy_linkerror_attr(invalid_dword_count); |
616 | sas_phy_linkerror_attr(running_disparity_error_count); | |
617 | sas_phy_linkerror_attr(loss_of_dword_sync_count); | |
618 | sas_phy_linkerror_attr(phy_reset_problem_count); | |
c7ebbbce | 619 | |
0b3e09da DW |
620 | static int sas_phy_setup(struct transport_container *tc, struct device *dev, |
621 | struct device *cdev) | |
622 | { | |
623 | struct sas_phy *phy = dev_to_phy(dev); | |
624 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
625 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
626 | ||
627 | if (i->f->phy_setup) | |
628 | i->f->phy_setup(phy); | |
629 | ||
630 | return 0; | |
631 | } | |
c7ebbbce CH |
632 | |
633 | static DECLARE_TRANSPORT_CLASS(sas_phy_class, | |
0b3e09da | 634 | "sas_phy", sas_phy_setup, NULL, NULL); |
c7ebbbce CH |
635 | |
636 | static int sas_phy_match(struct attribute_container *cont, struct device *dev) | |
637 | { | |
638 | struct Scsi_Host *shost; | |
639 | struct sas_internal *i; | |
640 | ||
641 | if (!scsi_is_sas_phy(dev)) | |
642 | return 0; | |
643 | shost = dev_to_shost(dev->parent); | |
644 | ||
645 | if (!shost->transportt) | |
646 | return 0; | |
647 | if (shost->transportt->host_attrs.ac.class != | |
648 | &sas_host_class.class) | |
649 | return 0; | |
650 | ||
651 | i = to_sas_internal(shost->transportt); | |
652 | return &i->phy_attr_cont.ac == cont; | |
653 | } | |
654 | ||
655 | static void sas_phy_release(struct device *dev) | |
656 | { | |
657 | struct sas_phy *phy = dev_to_phy(dev); | |
0b3e09da DW |
658 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); |
659 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
c7ebbbce | 660 | |
0b3e09da DW |
661 | if (i->f->phy_release) |
662 | i->f->phy_release(phy); | |
c7ebbbce CH |
663 | put_device(dev->parent); |
664 | kfree(phy); | |
665 | } | |
666 | ||
667 | /** | |
eb44820c | 668 | * sas_phy_alloc - allocates and initialize a SAS PHY structure |
c7ebbbce | 669 | * @parent: Parent device |
d99ca418 | 670 | * @number: Phy index |
c7ebbbce CH |
671 | * |
672 | * Allocates an SAS PHY structure. It will be added in the device tree | |
673 | * below the device specified by @parent, which has to be either a Scsi_Host | |
674 | * or sas_rphy. | |
675 | * | |
676 | * Returns: | |
677 | * SAS PHY allocated or %NULL if the allocation failed. | |
678 | */ | |
679 | struct sas_phy *sas_phy_alloc(struct device *parent, int number) | |
680 | { | |
681 | struct Scsi_Host *shost = dev_to_shost(parent); | |
682 | struct sas_phy *phy; | |
683 | ||
24669f75 | 684 | phy = kzalloc(sizeof(*phy), GFP_KERNEL); |
c7ebbbce CH |
685 | if (!phy) |
686 | return NULL; | |
c7ebbbce | 687 | |
c7ebbbce | 688 | phy->number = number; |
acbf167d | 689 | phy->enabled = 1; |
c7ebbbce CH |
690 | |
691 | device_initialize(&phy->dev); | |
692 | phy->dev.parent = get_device(parent); | |
693 | phy->dev.release = sas_phy_release; | |
65c92b09 | 694 | INIT_LIST_HEAD(&phy->port_siblings); |
79cb1819 JB |
695 | if (scsi_is_sas_expander_device(parent)) { |
696 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 | 697 | dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no, |
79cb1819 JB |
698 | rphy->scsi_target_id, number); |
699 | } else | |
71610f55 | 700 | dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number); |
c7ebbbce CH |
701 | |
702 | transport_setup_device(&phy->dev); | |
703 | ||
704 | return phy; | |
705 | } | |
706 | EXPORT_SYMBOL(sas_phy_alloc); | |
707 | ||
708 | /** | |
eb44820c | 709 | * sas_phy_add - add a SAS PHY to the device hierarchy |
c7ebbbce CH |
710 | * @phy: The PHY to be added |
711 | * | |
712 | * Publishes a SAS PHY to the rest of the system. | |
713 | */ | |
714 | int sas_phy_add(struct sas_phy *phy) | |
715 | { | |
716 | int error; | |
717 | ||
718 | error = device_add(&phy->dev); | |
719 | if (!error) { | |
720 | transport_add_device(&phy->dev); | |
721 | transport_configure_device(&phy->dev); | |
722 | } | |
723 | ||
724 | return error; | |
725 | } | |
726 | EXPORT_SYMBOL(sas_phy_add); | |
727 | ||
728 | /** | |
eb44820c | 729 | * sas_phy_free - free a SAS PHY |
c7ebbbce CH |
730 | * @phy: SAS PHY to free |
731 | * | |
732 | * Frees the specified SAS PHY. | |
733 | * | |
734 | * Note: | |
735 | * This function must only be called on a PHY that has not | |
af901ca1 | 736 | * successfully been added using sas_phy_add(). |
c7ebbbce CH |
737 | */ |
738 | void sas_phy_free(struct sas_phy *phy) | |
739 | { | |
740 | transport_destroy_device(&phy->dev); | |
92aab646 | 741 | put_device(&phy->dev); |
c7ebbbce CH |
742 | } |
743 | EXPORT_SYMBOL(sas_phy_free); | |
744 | ||
745 | /** | |
eb44820c | 746 | * sas_phy_delete - remove SAS PHY |
c7ebbbce CH |
747 | * @phy: SAS PHY to remove |
748 | * | |
749 | * Removes the specified SAS PHY. If the SAS PHY has an | |
750 | * associated remote PHY it is removed before. | |
751 | */ | |
752 | void | |
753 | sas_phy_delete(struct sas_phy *phy) | |
754 | { | |
755 | struct device *dev = &phy->dev; | |
756 | ||
65c92b09 JB |
757 | /* this happens if the phy is still part of a port when deleted */ |
758 | BUG_ON(!list_empty(&phy->port_siblings)); | |
c7ebbbce CH |
759 | |
760 | transport_remove_device(dev); | |
761 | device_del(dev); | |
762 | transport_destroy_device(dev); | |
92aab646 | 763 | put_device(dev); |
c7ebbbce CH |
764 | } |
765 | EXPORT_SYMBOL(sas_phy_delete); | |
766 | ||
767 | /** | |
eb44820c | 768 | * scsi_is_sas_phy - check if a struct device represents a SAS PHY |
c7ebbbce CH |
769 | * @dev: device to check |
770 | * | |
771 | * Returns: | |
772 | * %1 if the device represents a SAS PHY, %0 else | |
773 | */ | |
774 | int scsi_is_sas_phy(const struct device *dev) | |
775 | { | |
776 | return dev->release == sas_phy_release; | |
777 | } | |
778 | EXPORT_SYMBOL(scsi_is_sas_phy); | |
779 | ||
65c92b09 JB |
780 | /* |
781 | * SAS Port attributes | |
782 | */ | |
783 | #define sas_port_show_simple(field, name, format_string, cast) \ | |
784 | static ssize_t \ | |
ee959b00 TJ |
785 | show_sas_port_##name(struct device *dev, \ |
786 | struct device_attribute *attr, char *buf) \ | |
65c92b09 | 787 | { \ |
ee959b00 | 788 | struct sas_port *port = transport_class_to_sas_port(dev); \ |
65c92b09 JB |
789 | \ |
790 | return snprintf(buf, 20, format_string, cast port->field); \ | |
791 | } | |
792 | ||
793 | #define sas_port_simple_attr(field, name, format_string, type) \ | |
794 | sas_port_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 795 | static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL) |
65c92b09 JB |
796 | |
797 | sas_port_simple_attr(num_phys, num_phys, "%d\n", int); | |
798 | ||
799 | static DECLARE_TRANSPORT_CLASS(sas_port_class, | |
800 | "sas_port", NULL, NULL, NULL); | |
801 | ||
802 | static int sas_port_match(struct attribute_container *cont, struct device *dev) | |
803 | { | |
804 | struct Scsi_Host *shost; | |
805 | struct sas_internal *i; | |
806 | ||
807 | if (!scsi_is_sas_port(dev)) | |
808 | return 0; | |
809 | shost = dev_to_shost(dev->parent); | |
810 | ||
811 | if (!shost->transportt) | |
812 | return 0; | |
813 | if (shost->transportt->host_attrs.ac.class != | |
814 | &sas_host_class.class) | |
815 | return 0; | |
816 | ||
817 | i = to_sas_internal(shost->transportt); | |
818 | return &i->port_attr_cont.ac == cont; | |
819 | } | |
820 | ||
821 | ||
822 | static void sas_port_release(struct device *dev) | |
823 | { | |
824 | struct sas_port *port = dev_to_sas_port(dev); | |
825 | ||
826 | BUG_ON(!list_empty(&port->phy_list)); | |
827 | ||
828 | put_device(dev->parent); | |
829 | kfree(port); | |
830 | } | |
831 | ||
832 | static void sas_port_create_link(struct sas_port *port, | |
833 | struct sas_phy *phy) | |
834 | { | |
21434966 DW |
835 | int res; |
836 | ||
837 | res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj, | |
71610f55 | 838 | dev_name(&phy->dev)); |
21434966 DW |
839 | if (res) |
840 | goto err; | |
841 | res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port"); | |
842 | if (res) | |
843 | goto err; | |
844 | return; | |
845 | err: | |
846 | printk(KERN_ERR "%s: Cannot create port links, err=%d\n", | |
cadbd4a5 | 847 | __func__, res); |
65c92b09 JB |
848 | } |
849 | ||
850 | static void sas_port_delete_link(struct sas_port *port, | |
851 | struct sas_phy *phy) | |
852 | { | |
71610f55 | 853 | sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev)); |
65c92b09 JB |
854 | sysfs_remove_link(&phy->dev.kobj, "port"); |
855 | } | |
856 | ||
857 | /** sas_port_alloc - allocate and initialize a SAS port structure | |
858 | * | |
859 | * @parent: parent device | |
860 | * @port_id: port number | |
861 | * | |
862 | * Allocates a SAS port structure. It will be added to the device tree | |
863 | * below the device specified by @parent which must be either a Scsi_Host | |
864 | * or a sas_expander_device. | |
865 | * | |
866 | * Returns %NULL on error | |
867 | */ | |
868 | struct sas_port *sas_port_alloc(struct device *parent, int port_id) | |
869 | { | |
870 | struct Scsi_Host *shost = dev_to_shost(parent); | |
871 | struct sas_port *port; | |
872 | ||
873 | port = kzalloc(sizeof(*port), GFP_KERNEL); | |
874 | if (!port) | |
875 | return NULL; | |
876 | ||
877 | port->port_identifier = port_id; | |
878 | ||
879 | device_initialize(&port->dev); | |
880 | ||
881 | port->dev.parent = get_device(parent); | |
882 | port->dev.release = sas_port_release; | |
883 | ||
884 | mutex_init(&port->phy_list_mutex); | |
885 | INIT_LIST_HEAD(&port->phy_list); | |
886 | ||
887 | if (scsi_is_sas_expander_device(parent)) { | |
888 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
71610f55 KS |
889 | dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no, |
890 | rphy->scsi_target_id, port->port_identifier); | |
65c92b09 | 891 | } else |
71610f55 KS |
892 | dev_set_name(&port->dev, "port-%d:%d", shost->host_no, |
893 | port->port_identifier); | |
65c92b09 JB |
894 | |
895 | transport_setup_device(&port->dev); | |
896 | ||
897 | return port; | |
898 | } | |
899 | EXPORT_SYMBOL(sas_port_alloc); | |
900 | ||
c9fefeb2 JB |
901 | /** sas_port_alloc_num - allocate and initialize a SAS port structure |
902 | * | |
903 | * @parent: parent device | |
904 | * | |
905 | * Allocates a SAS port structure and a number to go with it. This | |
906 | * interface is really for adapters where the port number has no | |
907 | * meansing, so the sas class should manage them. It will be added to | |
908 | * the device tree below the device specified by @parent which must be | |
909 | * either a Scsi_Host or a sas_expander_device. | |
910 | * | |
911 | * Returns %NULL on error | |
912 | */ | |
913 | struct sas_port *sas_port_alloc_num(struct device *parent) | |
914 | { | |
915 | int index; | |
916 | struct Scsi_Host *shost = dev_to_shost(parent); | |
917 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
918 | ||
919 | /* FIXME: use idr for this eventually */ | |
920 | mutex_lock(&sas_host->lock); | |
921 | if (scsi_is_sas_expander_device(parent)) { | |
922 | struct sas_rphy *rphy = dev_to_rphy(parent); | |
923 | struct sas_expander_device *exp = rphy_to_expander_device(rphy); | |
924 | ||
925 | index = exp->next_port_id++; | |
926 | } else | |
927 | index = sas_host->next_port_id++; | |
928 | mutex_unlock(&sas_host->lock); | |
929 | return sas_port_alloc(parent, index); | |
930 | } | |
931 | EXPORT_SYMBOL(sas_port_alloc_num); | |
932 | ||
65c92b09 JB |
933 | /** |
934 | * sas_port_add - add a SAS port to the device hierarchy | |
65c92b09 JB |
935 | * @port: port to be added |
936 | * | |
937 | * publishes a port to the rest of the system | |
938 | */ | |
939 | int sas_port_add(struct sas_port *port) | |
940 | { | |
941 | int error; | |
942 | ||
943 | /* No phys should be added until this is made visible */ | |
944 | BUG_ON(!list_empty(&port->phy_list)); | |
945 | ||
946 | error = device_add(&port->dev); | |
947 | ||
948 | if (error) | |
949 | return error; | |
950 | ||
951 | transport_add_device(&port->dev); | |
952 | transport_configure_device(&port->dev); | |
953 | ||
954 | return 0; | |
955 | } | |
956 | EXPORT_SYMBOL(sas_port_add); | |
957 | ||
958 | /** | |
eb44820c | 959 | * sas_port_free - free a SAS PORT |
65c92b09 JB |
960 | * @port: SAS PORT to free |
961 | * | |
962 | * Frees the specified SAS PORT. | |
963 | * | |
964 | * Note: | |
965 | * This function must only be called on a PORT that has not | |
af901ca1 | 966 | * successfully been added using sas_port_add(). |
65c92b09 JB |
967 | */ |
968 | void sas_port_free(struct sas_port *port) | |
969 | { | |
970 | transport_destroy_device(&port->dev); | |
971 | put_device(&port->dev); | |
972 | } | |
973 | EXPORT_SYMBOL(sas_port_free); | |
974 | ||
975 | /** | |
eb44820c | 976 | * sas_port_delete - remove SAS PORT |
65c92b09 JB |
977 | * @port: SAS PORT to remove |
978 | * | |
979 | * Removes the specified SAS PORT. If the SAS PORT has an | |
980 | * associated phys, unlink them from the port as well. | |
981 | */ | |
982 | void sas_port_delete(struct sas_port *port) | |
983 | { | |
984 | struct device *dev = &port->dev; | |
985 | struct sas_phy *phy, *tmp_phy; | |
986 | ||
987 | if (port->rphy) { | |
988 | sas_rphy_delete(port->rphy); | |
989 | port->rphy = NULL; | |
990 | } | |
991 | ||
992 | mutex_lock(&port->phy_list_mutex); | |
993 | list_for_each_entry_safe(phy, tmp_phy, &port->phy_list, | |
994 | port_siblings) { | |
995 | sas_port_delete_link(port, phy); | |
996 | list_del_init(&phy->port_siblings); | |
997 | } | |
998 | mutex_unlock(&port->phy_list_mutex); | |
999 | ||
a0e1b6ef JB |
1000 | if (port->is_backlink) { |
1001 | struct device *parent = port->dev.parent; | |
1002 | ||
71610f55 | 1003 | sysfs_remove_link(&port->dev.kobj, dev_name(parent)); |
a0e1b6ef JB |
1004 | port->is_backlink = 0; |
1005 | } | |
1006 | ||
65c92b09 JB |
1007 | transport_remove_device(dev); |
1008 | device_del(dev); | |
1009 | transport_destroy_device(dev); | |
1010 | put_device(dev); | |
1011 | } | |
1012 | EXPORT_SYMBOL(sas_port_delete); | |
1013 | ||
1014 | /** | |
eb44820c | 1015 | * scsi_is_sas_port - check if a struct device represents a SAS port |
65c92b09 JB |
1016 | * @dev: device to check |
1017 | * | |
1018 | * Returns: | |
1019 | * %1 if the device represents a SAS Port, %0 else | |
1020 | */ | |
1021 | int scsi_is_sas_port(const struct device *dev) | |
1022 | { | |
1023 | return dev->release == sas_port_release; | |
1024 | } | |
1025 | EXPORT_SYMBOL(scsi_is_sas_port); | |
1026 | ||
f41a0c44 DW |
1027 | /** |
1028 | * sas_port_get_phy - try to take a reference on a port member | |
1029 | * @port: port to check | |
1030 | */ | |
1031 | struct sas_phy *sas_port_get_phy(struct sas_port *port) | |
1032 | { | |
1033 | struct sas_phy *phy; | |
1034 | ||
1035 | mutex_lock(&port->phy_list_mutex); | |
1036 | if (list_empty(&port->phy_list)) | |
1037 | phy = NULL; | |
1038 | else { | |
1039 | struct list_head *ent = port->phy_list.next; | |
1040 | ||
1041 | phy = list_entry(ent, typeof(*phy), port_siblings); | |
1042 | get_device(&phy->dev); | |
1043 | } | |
1044 | mutex_unlock(&port->phy_list_mutex); | |
1045 | ||
1046 | return phy; | |
1047 | } | |
1048 | EXPORT_SYMBOL(sas_port_get_phy); | |
1049 | ||
65c92b09 JB |
1050 | /** |
1051 | * sas_port_add_phy - add another phy to a port to form a wide port | |
1052 | * @port: port to add the phy to | |
1053 | * @phy: phy to add | |
1054 | * | |
1055 | * When a port is initially created, it is empty (has no phys). All | |
1056 | * ports must have at least one phy to operated, and all wide ports | |
1057 | * must have at least two. The current code makes no difference | |
1058 | * between ports and wide ports, but the only object that can be | |
1059 | * connected to a remote device is a port, so ports must be formed on | |
1060 | * all devices with phys if they're connected to anything. | |
1061 | */ | |
1062 | void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy) | |
1063 | { | |
1064 | mutex_lock(&port->phy_list_mutex); | |
1065 | if (unlikely(!list_empty(&phy->port_siblings))) { | |
1066 | /* make sure we're already on this port */ | |
1067 | struct sas_phy *tmp; | |
1068 | ||
1069 | list_for_each_entry(tmp, &port->phy_list, port_siblings) | |
1070 | if (tmp == phy) | |
1071 | break; | |
1072 | /* If this trips, you added a phy that was already | |
1073 | * part of a different port */ | |
1074 | if (unlikely(tmp != phy)) { | |
71610f55 KS |
1075 | dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", |
1076 | dev_name(&phy->dev)); | |
65c92b09 JB |
1077 | BUG(); |
1078 | } | |
1079 | } else { | |
1080 | sas_port_create_link(port, phy); | |
1081 | list_add_tail(&phy->port_siblings, &port->phy_list); | |
1082 | port->num_phys++; | |
1083 | } | |
1084 | mutex_unlock(&port->phy_list_mutex); | |
1085 | } | |
1086 | EXPORT_SYMBOL(sas_port_add_phy); | |
1087 | ||
1088 | /** | |
1089 | * sas_port_delete_phy - remove a phy from a port or wide port | |
1090 | * @port: port to remove the phy from | |
1091 | * @phy: phy to remove | |
1092 | * | |
1093 | * This operation is used for tearing down ports again. It must be | |
1094 | * done to every port or wide port before calling sas_port_delete. | |
1095 | */ | |
1096 | void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy) | |
1097 | { | |
1098 | mutex_lock(&port->phy_list_mutex); | |
1099 | sas_port_delete_link(port, phy); | |
1100 | list_del_init(&phy->port_siblings); | |
1101 | port->num_phys--; | |
1102 | mutex_unlock(&port->phy_list_mutex); | |
1103 | } | |
1104 | EXPORT_SYMBOL(sas_port_delete_phy); | |
1105 | ||
a0e1b6ef JB |
1106 | void sas_port_mark_backlink(struct sas_port *port) |
1107 | { | |
21434966 | 1108 | int res; |
a0e1b6ef JB |
1109 | struct device *parent = port->dev.parent->parent->parent; |
1110 | ||
1111 | if (port->is_backlink) | |
1112 | return; | |
1113 | port->is_backlink = 1; | |
21434966 | 1114 | res = sysfs_create_link(&port->dev.kobj, &parent->kobj, |
71610f55 | 1115 | dev_name(parent)); |
21434966 DW |
1116 | if (res) |
1117 | goto err; | |
1118 | return; | |
1119 | err: | |
1120 | printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n", | |
cadbd4a5 | 1121 | __func__, res); |
a0e1b6ef JB |
1122 | |
1123 | } | |
1124 | EXPORT_SYMBOL(sas_port_mark_backlink); | |
1125 | ||
c7ebbbce CH |
1126 | /* |
1127 | * SAS remote PHY attributes. | |
1128 | */ | |
1129 | ||
1130 | #define sas_rphy_show_simple(field, name, format_string, cast) \ | |
1131 | static ssize_t \ | |
ee959b00 TJ |
1132 | show_sas_rphy_##name(struct device *dev, \ |
1133 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1134 | { \ |
ee959b00 | 1135 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1136 | \ |
1137 | return snprintf(buf, 20, format_string, cast rphy->field); \ | |
1138 | } | |
1139 | ||
1140 | #define sas_rphy_simple_attr(field, name, format_string, type) \ | |
1141 | sas_rphy_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1142 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1143 | show_sas_rphy_##name, NULL) |
1144 | ||
1145 | #define sas_rphy_show_protocol(field, name) \ | |
1146 | static ssize_t \ | |
ee959b00 TJ |
1147 | show_sas_rphy_##name(struct device *dev, \ |
1148 | struct device_attribute *attr, char *buf) \ | |
c7ebbbce | 1149 | { \ |
ee959b00 | 1150 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
c7ebbbce CH |
1151 | \ |
1152 | if (!rphy->field) \ | |
1153 | return snprintf(buf, 20, "none\n"); \ | |
1154 | return get_sas_protocol_names(rphy->field, buf); \ | |
1155 | } | |
1156 | ||
1157 | #define sas_rphy_protocol_attr(field, name) \ | |
1158 | sas_rphy_show_protocol(field, name) \ | |
ee959b00 | 1159 | static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \ |
c7ebbbce CH |
1160 | show_sas_rphy_##name, NULL) |
1161 | ||
1162 | static ssize_t | |
ee959b00 TJ |
1163 | show_sas_rphy_device_type(struct device *dev, |
1164 | struct device_attribute *attr, char *buf) | |
c7ebbbce | 1165 | { |
ee959b00 | 1166 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
c7ebbbce CH |
1167 | |
1168 | if (!rphy->identify.device_type) | |
1169 | return snprintf(buf, 20, "none\n"); | |
1170 | return get_sas_device_type_names( | |
1171 | rphy->identify.device_type, buf); | |
1172 | } | |
1173 | ||
ee959b00 | 1174 | static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO, |
c7ebbbce CH |
1175 | show_sas_rphy_device_type, NULL); |
1176 | ||
a0125641 | 1177 | static ssize_t |
ee959b00 TJ |
1178 | show_sas_rphy_enclosure_identifier(struct device *dev, |
1179 | struct device_attribute *attr, char *buf) | |
a0125641 | 1180 | { |
ee959b00 | 1181 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1182 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1183 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1184 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1185 | u64 identifier; | |
1186 | int error; | |
1187 | ||
a0125641 CH |
1188 | error = i->f->get_enclosure_identifier(rphy, &identifier); |
1189 | if (error) | |
1190 | return error; | |
1191 | return sprintf(buf, "0x%llx\n", (unsigned long long)identifier); | |
1192 | } | |
1193 | ||
ee959b00 | 1194 | static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO, |
a0125641 CH |
1195 | show_sas_rphy_enclosure_identifier, NULL); |
1196 | ||
1197 | static ssize_t | |
ee959b00 TJ |
1198 | show_sas_rphy_bay_identifier(struct device *dev, |
1199 | struct device_attribute *attr, char *buf) | |
a0125641 | 1200 | { |
ee959b00 | 1201 | struct sas_rphy *rphy = transport_class_to_rphy(dev); |
a0125641 CH |
1202 | struct sas_phy *phy = dev_to_phy(rphy->dev.parent); |
1203 | struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); | |
1204 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
1205 | int val; | |
1206 | ||
a0125641 CH |
1207 | val = i->f->get_bay_identifier(rphy); |
1208 | if (val < 0) | |
1209 | return val; | |
1210 | return sprintf(buf, "%d\n", val); | |
1211 | } | |
1212 | ||
ee959b00 | 1213 | static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO, |
a0125641 CH |
1214 | show_sas_rphy_bay_identifier, NULL); |
1215 | ||
c7ebbbce CH |
1216 | sas_rphy_protocol_attr(identify.initiator_port_protocols, |
1217 | initiator_port_protocols); | |
1218 | sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols); | |
1219 | sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n", | |
1220 | unsigned long long); | |
1221 | sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8); | |
cdc43ae3 | 1222 | sas_rphy_simple_attr(scsi_target_id, scsi_target_id, "%d\n", u32); |
c7ebbbce | 1223 | |
42ab0360 JB |
1224 | /* only need 8 bytes of data plus header (4 or 8) */ |
1225 | #define BUF_SIZE 64 | |
1226 | ||
1227 | int sas_read_port_mode_page(struct scsi_device *sdev) | |
1228 | { | |
1229 | char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata; | |
0f88009d | 1230 | struct sas_end_device *rdev = sas_sdev_to_rdev(sdev); |
42ab0360 JB |
1231 | struct scsi_mode_data mode_data; |
1232 | int res, error; | |
1233 | ||
42ab0360 JB |
1234 | if (!buffer) |
1235 | return -ENOMEM; | |
1236 | ||
1237 | res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3, | |
1238 | &mode_data, NULL); | |
1239 | ||
1240 | error = -EINVAL; | |
1241 | if (!scsi_status_is_good(res)) | |
1242 | goto out; | |
1243 | ||
1244 | msdata = buffer + mode_data.header_length + | |
1245 | mode_data.block_descriptor_length; | |
1246 | ||
1247 | if (msdata - buffer > BUF_SIZE - 8) | |
1248 | goto out; | |
1249 | ||
1250 | error = 0; | |
1251 | ||
1252 | rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0; | |
1253 | rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5]; | |
1254 | rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7]; | |
1255 | ||
1256 | out: | |
1257 | kfree(buffer); | |
1258 | return error; | |
1259 | } | |
1260 | EXPORT_SYMBOL(sas_read_port_mode_page); | |
1261 | ||
79cb1819 JB |
1262 | static DECLARE_TRANSPORT_CLASS(sas_end_dev_class, |
1263 | "sas_end_device", NULL, NULL, NULL); | |
1264 | ||
42ab0360 JB |
1265 | #define sas_end_dev_show_simple(field, name, format_string, cast) \ |
1266 | static ssize_t \ | |
ee959b00 TJ |
1267 | show_sas_end_dev_##name(struct device *dev, \ |
1268 | struct device_attribute *attr, char *buf) \ | |
42ab0360 | 1269 | { \ |
ee959b00 | 1270 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
42ab0360 JB |
1271 | struct sas_end_device *rdev = rphy_to_end_device(rphy); \ |
1272 | \ | |
1273 | return snprintf(buf, 20, format_string, cast rdev->field); \ | |
1274 | } | |
1275 | ||
1276 | #define sas_end_dev_simple_attr(field, name, format_string, type) \ | |
1277 | sas_end_dev_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1278 | static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \ |
42ab0360 JB |
1279 | show_sas_end_dev_##name, NULL) |
1280 | ||
1281 | sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int); | |
1282 | sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout, | |
1283 | "%d\n", int); | |
1284 | sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout, | |
1285 | "%d\n", int); | |
0f88009d JB |
1286 | sas_end_dev_simple_attr(tlr_supported, tlr_supported, |
1287 | "%d\n", int); | |
1288 | sas_end_dev_simple_attr(tlr_enabled, tlr_enabled, | |
1289 | "%d\n", int); | |
42ab0360 | 1290 | |
79cb1819 JB |
1291 | static DECLARE_TRANSPORT_CLASS(sas_expander_class, |
1292 | "sas_expander", NULL, NULL, NULL); | |
1293 | ||
1294 | #define sas_expander_show_simple(field, name, format_string, cast) \ | |
1295 | static ssize_t \ | |
ee959b00 TJ |
1296 | show_sas_expander_##name(struct device *dev, \ |
1297 | struct device_attribute *attr, char *buf) \ | |
79cb1819 | 1298 | { \ |
ee959b00 | 1299 | struct sas_rphy *rphy = transport_class_to_rphy(dev); \ |
79cb1819 JB |
1300 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); \ |
1301 | \ | |
1302 | return snprintf(buf, 20, format_string, cast edev->field); \ | |
1303 | } | |
1304 | ||
1305 | #define sas_expander_simple_attr(field, name, format_string, type) \ | |
1306 | sas_expander_show_simple(field, name, format_string, (type)) \ | |
ee959b00 | 1307 | static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \ |
79cb1819 JB |
1308 | show_sas_expander_##name, NULL) |
1309 | ||
1310 | sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *); | |
1311 | sas_expander_simple_attr(product_id, product_id, "%s\n", char *); | |
1312 | sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *); | |
1313 | sas_expander_simple_attr(component_vendor_id, component_vendor_id, | |
1314 | "%s\n", char *); | |
1315 | sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int); | |
1316 | sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n", | |
1317 | unsigned int); | |
1318 | sas_expander_simple_attr(level, level, "%d\n", int); | |
42ab0360 | 1319 | |
c7ebbbce | 1320 | static DECLARE_TRANSPORT_CLASS(sas_rphy_class, |
2f8600df | 1321 | "sas_device", NULL, NULL, NULL); |
c7ebbbce CH |
1322 | |
1323 | static int sas_rphy_match(struct attribute_container *cont, struct device *dev) | |
1324 | { | |
1325 | struct Scsi_Host *shost; | |
1326 | struct sas_internal *i; | |
1327 | ||
1328 | if (!scsi_is_sas_rphy(dev)) | |
1329 | return 0; | |
1330 | shost = dev_to_shost(dev->parent->parent); | |
1331 | ||
1332 | if (!shost->transportt) | |
1333 | return 0; | |
1334 | if (shost->transportt->host_attrs.ac.class != | |
1335 | &sas_host_class.class) | |
1336 | return 0; | |
1337 | ||
1338 | i = to_sas_internal(shost->transportt); | |
1339 | return &i->rphy_attr_cont.ac == cont; | |
1340 | } | |
1341 | ||
42ab0360 JB |
1342 | static int sas_end_dev_match(struct attribute_container *cont, |
1343 | struct device *dev) | |
1344 | { | |
1345 | struct Scsi_Host *shost; | |
1346 | struct sas_internal *i; | |
1347 | struct sas_rphy *rphy; | |
1348 | ||
1349 | if (!scsi_is_sas_rphy(dev)) | |
1350 | return 0; | |
1351 | shost = dev_to_shost(dev->parent->parent); | |
1352 | rphy = dev_to_rphy(dev); | |
1353 | ||
1354 | if (!shost->transportt) | |
1355 | return 0; | |
1356 | if (shost->transportt->host_attrs.ac.class != | |
1357 | &sas_host_class.class) | |
1358 | return 0; | |
1359 | ||
1360 | i = to_sas_internal(shost->transportt); | |
1361 | return &i->end_dev_attr_cont.ac == cont && | |
2f8600df | 1362 | rphy->identify.device_type == SAS_END_DEVICE; |
42ab0360 JB |
1363 | } |
1364 | ||
79cb1819 JB |
1365 | static int sas_expander_match(struct attribute_container *cont, |
1366 | struct device *dev) | |
1367 | { | |
1368 | struct Scsi_Host *shost; | |
1369 | struct sas_internal *i; | |
1370 | struct sas_rphy *rphy; | |
1371 | ||
1372 | if (!scsi_is_sas_rphy(dev)) | |
1373 | return 0; | |
1374 | shost = dev_to_shost(dev->parent->parent); | |
1375 | rphy = dev_to_rphy(dev); | |
1376 | ||
1377 | if (!shost->transportt) | |
1378 | return 0; | |
1379 | if (shost->transportt->host_attrs.ac.class != | |
1380 | &sas_host_class.class) | |
1381 | return 0; | |
1382 | ||
1383 | i = to_sas_internal(shost->transportt); | |
1384 | return &i->expander_attr_cont.ac == cont && | |
1385 | (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE || | |
2f8600df | 1386 | rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE); |
79cb1819 JB |
1387 | } |
1388 | ||
2f8600df | 1389 | static void sas_expander_release(struct device *dev) |
c7ebbbce CH |
1390 | { |
1391 | struct sas_rphy *rphy = dev_to_rphy(dev); | |
2f8600df | 1392 | struct sas_expander_device *edev = rphy_to_expander_device(rphy); |
c7ebbbce CH |
1393 | |
1394 | put_device(dev->parent); | |
2f8600df | 1395 | kfree(edev); |
c7ebbbce CH |
1396 | } |
1397 | ||
2f8600df | 1398 | static void sas_end_device_release(struct device *dev) |
c7ebbbce | 1399 | { |
2f8600df JB |
1400 | struct sas_rphy *rphy = dev_to_rphy(dev); |
1401 | struct sas_end_device *edev = rphy_to_end_device(rphy); | |
c7ebbbce | 1402 | |
2f8600df JB |
1403 | put_device(dev->parent); |
1404 | kfree(edev); | |
c7ebbbce | 1405 | } |
c7ebbbce | 1406 | |
c5943d36 | 1407 | /** |
183b8021 | 1408 | * sas_rphy_initialize - common rphy initialization |
c5943d36 JB |
1409 | * @rphy: rphy to initialise |
1410 | * | |
1411 | * Used by both sas_end_device_alloc() and sas_expander_alloc() to | |
1412 | * initialise the common rphy component of each. | |
1413 | */ | |
1414 | static void sas_rphy_initialize(struct sas_rphy *rphy) | |
1415 | { | |
1416 | INIT_LIST_HEAD(&rphy->list); | |
1417 | } | |
1418 | ||
42ab0360 JB |
1419 | /** |
1420 | * sas_end_device_alloc - allocate an rphy for an end device | |
eb44820c | 1421 | * @parent: which port |
42ab0360 JB |
1422 | * |
1423 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1424 | * | |
1425 | * Returns: | |
1426 | * SAS PHY allocated or %NULL if the allocation failed. | |
1427 | */ | |
65c92b09 | 1428 | struct sas_rphy *sas_end_device_alloc(struct sas_port *parent) |
42ab0360 JB |
1429 | { |
1430 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1431 | struct sas_end_device *rdev; | |
1432 | ||
1433 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1434 | if (!rdev) { | |
42ab0360 JB |
1435 | return NULL; |
1436 | } | |
1437 | ||
1438 | device_initialize(&rdev->rphy.dev); | |
1439 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1440 | rdev->rphy.dev.release = sas_end_device_release; |
65c92b09 JB |
1441 | if (scsi_is_sas_expander_device(parent->dev.parent)) { |
1442 | struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent); | |
71610f55 KS |
1443 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d", |
1444 | shost->host_no, rphy->scsi_target_id, | |
1445 | parent->port_identifier); | |
65c92b09 | 1446 | } else |
71610f55 KS |
1447 | dev_set_name(&rdev->rphy.dev, "end_device-%d:%d", |
1448 | shost->host_no, parent->port_identifier); | |
42ab0360 | 1449 | rdev->rphy.identify.device_type = SAS_END_DEVICE; |
c5943d36 | 1450 | sas_rphy_initialize(&rdev->rphy); |
42ab0360 JB |
1451 | transport_setup_device(&rdev->rphy.dev); |
1452 | ||
1453 | return &rdev->rphy; | |
1454 | } | |
1455 | EXPORT_SYMBOL(sas_end_device_alloc); | |
1456 | ||
79cb1819 JB |
1457 | /** |
1458 | * sas_expander_alloc - allocate an rphy for an end device | |
eb44820c RL |
1459 | * @parent: which port |
1460 | * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE | |
79cb1819 JB |
1461 | * |
1462 | * Allocates an SAS remote PHY structure, connected to @parent. | |
1463 | * | |
1464 | * Returns: | |
1465 | * SAS PHY allocated or %NULL if the allocation failed. | |
1466 | */ | |
65c92b09 | 1467 | struct sas_rphy *sas_expander_alloc(struct sas_port *parent, |
79cb1819 JB |
1468 | enum sas_device_type type) |
1469 | { | |
1470 | struct Scsi_Host *shost = dev_to_shost(&parent->dev); | |
1471 | struct sas_expander_device *rdev; | |
1472 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1473 | ||
1474 | BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE && | |
1475 | type != SAS_FANOUT_EXPANDER_DEVICE); | |
1476 | ||
1477 | rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); | |
1478 | if (!rdev) { | |
79cb1819 JB |
1479 | return NULL; |
1480 | } | |
1481 | ||
1482 | device_initialize(&rdev->rphy.dev); | |
1483 | rdev->rphy.dev.parent = get_device(&parent->dev); | |
2f8600df | 1484 | rdev->rphy.dev.release = sas_expander_release; |
79cb1819 JB |
1485 | mutex_lock(&sas_host->lock); |
1486 | rdev->rphy.scsi_target_id = sas_host->next_expander_id++; | |
1487 | mutex_unlock(&sas_host->lock); | |
71610f55 KS |
1488 | dev_set_name(&rdev->rphy.dev, "expander-%d:%d", |
1489 | shost->host_no, rdev->rphy.scsi_target_id); | |
79cb1819 | 1490 | rdev->rphy.identify.device_type = type; |
c5943d36 | 1491 | sas_rphy_initialize(&rdev->rphy); |
79cb1819 JB |
1492 | transport_setup_device(&rdev->rphy.dev); |
1493 | ||
1494 | return &rdev->rphy; | |
1495 | } | |
1496 | EXPORT_SYMBOL(sas_expander_alloc); | |
42ab0360 | 1497 | |
c7ebbbce | 1498 | /** |
eb44820c | 1499 | * sas_rphy_add - add a SAS remote PHY to the device hierarchy |
c7ebbbce CH |
1500 | * @rphy: The remote PHY to be added |
1501 | * | |
1502 | * Publishes a SAS remote PHY to the rest of the system. | |
1503 | */ | |
1504 | int sas_rphy_add(struct sas_rphy *rphy) | |
1505 | { | |
65c92b09 | 1506 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); |
c7ebbbce CH |
1507 | struct Scsi_Host *shost = dev_to_shost(parent->dev.parent); |
1508 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1509 | struct sas_identify *identify = &rphy->identify; | |
1510 | int error; | |
1511 | ||
1512 | if (parent->rphy) | |
1513 | return -ENXIO; | |
1514 | parent->rphy = rphy; | |
1515 | ||
1516 | error = device_add(&rphy->dev); | |
1517 | if (error) | |
1518 | return error; | |
1519 | transport_add_device(&rphy->dev); | |
1520 | transport_configure_device(&rphy->dev); | |
39dca558 | 1521 | if (sas_bsg_initialize(shost, rphy)) |
71610f55 | 1522 | printk("fail to a bsg device %s\n", dev_name(&rphy->dev)); |
39dca558 | 1523 | |
c7ebbbce | 1524 | |
e02f3f59 | 1525 | mutex_lock(&sas_host->lock); |
c7ebbbce CH |
1526 | list_add_tail(&rphy->list, &sas_host->rphy_list); |
1527 | if (identify->device_type == SAS_END_DEVICE && | |
1528 | (identify->target_port_protocols & | |
1529 | (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA))) | |
1530 | rphy->scsi_target_id = sas_host->next_target_id++; | |
7676f83a JB |
1531 | else if (identify->device_type == SAS_END_DEVICE) |
1532 | rphy->scsi_target_id = -1; | |
e02f3f59 | 1533 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1534 | |
79cb1819 JB |
1535 | if (identify->device_type == SAS_END_DEVICE && |
1536 | rphy->scsi_target_id != -1) { | |
2fc62e2a DW |
1537 | int lun; |
1538 | ||
1539 | if (identify->target_port_protocols & SAS_PROTOCOL_SSP) | |
1540 | lun = SCAN_WILD_CARD; | |
1541 | else | |
1542 | lun = 0; | |
1543 | ||
1d645088 HR |
1544 | scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, lun, |
1545 | SCSI_SCAN_INITIAL); | |
c7ebbbce CH |
1546 | } |
1547 | ||
1548 | return 0; | |
1549 | } | |
1550 | EXPORT_SYMBOL(sas_rphy_add); | |
1551 | ||
1552 | /** | |
eb44820c RL |
1553 | * sas_rphy_free - free a SAS remote PHY |
1554 | * @rphy: SAS remote PHY to free | |
c7ebbbce CH |
1555 | * |
1556 | * Frees the specified SAS remote PHY. | |
1557 | * | |
1558 | * Note: | |
1559 | * This function must only be called on a remote | |
af901ca1 | 1560 | * PHY that has not successfully been added using |
6f63caae | 1561 | * sas_rphy_add() (or has been sas_rphy_remove()'d) |
c7ebbbce CH |
1562 | */ |
1563 | void sas_rphy_free(struct sas_rphy *rphy) | |
1564 | { | |
92aab646 | 1565 | struct device *dev = &rphy->dev; |
c7ebbbce CH |
1566 | struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); |
1567 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1568 | ||
e02f3f59 | 1569 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1570 | list_del(&rphy->list); |
e02f3f59 | 1571 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1572 | |
92aab646 | 1573 | transport_destroy_device(dev); |
2f8600df | 1574 | |
92aab646 | 1575 | put_device(dev); |
c7ebbbce CH |
1576 | } |
1577 | EXPORT_SYMBOL(sas_rphy_free); | |
1578 | ||
1579 | /** | |
eb44820c | 1580 | * sas_rphy_delete - remove and free SAS remote PHY |
6f63caae | 1581 | * @rphy: SAS remote PHY to remove and free |
c7ebbbce | 1582 | * |
6f63caae | 1583 | * Removes the specified SAS remote PHY and frees it. |
c7ebbbce CH |
1584 | */ |
1585 | void | |
1586 | sas_rphy_delete(struct sas_rphy *rphy) | |
6f63caae DW |
1587 | { |
1588 | sas_rphy_remove(rphy); | |
1589 | sas_rphy_free(rphy); | |
1590 | } | |
1591 | EXPORT_SYMBOL(sas_rphy_delete); | |
1592 | ||
87c8331f DW |
1593 | /** |
1594 | * sas_rphy_unlink - unlink SAS remote PHY | |
1595 | * @rphy: SAS remote phy to unlink from its parent port | |
1596 | * | |
1597 | * Removes port reference to an rphy | |
1598 | */ | |
1599 | void sas_rphy_unlink(struct sas_rphy *rphy) | |
1600 | { | |
1601 | struct sas_port *parent = dev_to_sas_port(rphy->dev.parent); | |
1602 | ||
1603 | parent->rphy = NULL; | |
1604 | } | |
1605 | EXPORT_SYMBOL(sas_rphy_unlink); | |
1606 | ||
6f63caae | 1607 | /** |
eb44820c | 1608 | * sas_rphy_remove - remove SAS remote PHY |
6f63caae DW |
1609 | * @rphy: SAS remote phy to remove |
1610 | * | |
1611 | * Removes the specified SAS remote PHY. | |
1612 | */ | |
1613 | void | |
1614 | sas_rphy_remove(struct sas_rphy *rphy) | |
c7ebbbce CH |
1615 | { |
1616 | struct device *dev = &rphy->dev; | |
c7ebbbce | 1617 | |
d4054239 CH |
1618 | switch (rphy->identify.device_type) { |
1619 | case SAS_END_DEVICE: | |
1620 | scsi_remove_target(dev); | |
1621 | break; | |
1622 | case SAS_EDGE_EXPANDER_DEVICE: | |
1623 | case SAS_FANOUT_EXPANDER_DEVICE: | |
65c92b09 | 1624 | sas_remove_children(dev); |
d4054239 CH |
1625 | break; |
1626 | default: | |
1627 | break; | |
1628 | } | |
c7ebbbce | 1629 | |
87c8331f | 1630 | sas_rphy_unlink(rphy); |
82ea3e0e | 1631 | bsg_remove_queue(rphy->q); |
fe8b2304 CH |
1632 | transport_remove_device(dev); |
1633 | device_del(dev); | |
c7ebbbce | 1634 | } |
6f63caae | 1635 | EXPORT_SYMBOL(sas_rphy_remove); |
c7ebbbce CH |
1636 | |
1637 | /** | |
eb44820c | 1638 | * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY |
c7ebbbce CH |
1639 | * @dev: device to check |
1640 | * | |
1641 | * Returns: | |
1642 | * %1 if the device represents a SAS remote PHY, %0 else | |
1643 | */ | |
1644 | int scsi_is_sas_rphy(const struct device *dev) | |
1645 | { | |
2f8600df JB |
1646 | return dev->release == sas_end_device_release || |
1647 | dev->release == sas_expander_release; | |
c7ebbbce CH |
1648 | } |
1649 | EXPORT_SYMBOL(scsi_is_sas_rphy); | |
1650 | ||
1651 | ||
1652 | /* | |
1653 | * SCSI scan helper | |
1654 | */ | |
1655 | ||
e02f3f59 | 1656 | static int sas_user_scan(struct Scsi_Host *shost, uint channel, |
9cb78c16 | 1657 | uint id, u64 lun) |
c7ebbbce CH |
1658 | { |
1659 | struct sas_host_attrs *sas_host = to_sas_host_attrs(shost); | |
1660 | struct sas_rphy *rphy; | |
c7ebbbce | 1661 | |
e02f3f59 | 1662 | mutex_lock(&sas_host->lock); |
c7ebbbce | 1663 | list_for_each_entry(rphy, &sas_host->rphy_list, list) { |
6d99a3f3 JB |
1664 | if (rphy->identify.device_type != SAS_END_DEVICE || |
1665 | rphy->scsi_target_id == -1) | |
e02f3f59 CH |
1666 | continue; |
1667 | ||
e8bf3941 | 1668 | if ((channel == SCAN_WILD_CARD || channel == 0) && |
e02f3f59 | 1669 | (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) { |
1d645088 HR |
1670 | scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, |
1671 | lun, SCSI_SCAN_MANUAL); | |
e02f3f59 | 1672 | } |
c7ebbbce | 1673 | } |
e02f3f59 | 1674 | mutex_unlock(&sas_host->lock); |
c7ebbbce | 1675 | |
e02f3f59 | 1676 | return 0; |
c7ebbbce CH |
1677 | } |
1678 | ||
1679 | ||
1680 | /* | |
1681 | * Setup / Teardown code | |
1682 | */ | |
1683 | ||
d24e1eeb | 1684 | #define SETUP_TEMPLATE(attrb, field, perm, test) \ |
ee959b00 | 1685 | i->private_##attrb[count] = dev_attr_##field; \ |
42ab0360 | 1686 | i->private_##attrb[count].attr.mode = perm; \ |
42ab0360 JB |
1687 | i->attrb[count] = &i->private_##attrb[count]; \ |
1688 | if (test) \ | |
1689 | count++ | |
1690 | ||
d24e1eeb | 1691 | #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \ |
ee959b00 | 1692 | i->private_##attrb[count] = dev_attr_##field; \ |
d24e1eeb JB |
1693 | i->private_##attrb[count].attr.mode = perm; \ |
1694 | if (ro_test) { \ | |
1695 | i->private_##attrb[count].attr.mode = ro_perm; \ | |
1696 | i->private_##attrb[count].store = NULL; \ | |
1697 | } \ | |
1698 | i->attrb[count] = &i->private_##attrb[count]; \ | |
1699 | if (test) \ | |
1700 | count++ | |
42ab0360 JB |
1701 | |
1702 | #define SETUP_RPORT_ATTRIBUTE(field) \ | |
1703 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1704 | |
dd9fbb52 | 1705 | #define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \ |
42ab0360 | 1706 | SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1707 | |
65c92b09 | 1708 | #define SETUP_PHY_ATTRIBUTE(field) \ |
42ab0360 | 1709 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1) |
c7ebbbce | 1710 | |
d24e1eeb JB |
1711 | #define SETUP_PHY_ATTRIBUTE_RW(field) \ |
1712 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1713 | !i->f->set_phy_speed, S_IRUGO) | |
1714 | ||
acbf167d DW |
1715 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \ |
1716 | SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \ | |
1717 | !i->f->func, S_IRUGO) | |
1718 | ||
65c92b09 JB |
1719 | #define SETUP_PORT_ATTRIBUTE(field) \ |
1720 | SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1) | |
1721 | ||
1722 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \ | |
42ab0360 | 1723 | SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func) |
dd9fbb52 | 1724 | |
65c92b09 | 1725 | #define SETUP_PHY_ATTRIBUTE_WRONLY(field) \ |
fe3b5bfe | 1726 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1) |
07ba3a95 | 1727 | |
65c92b09 | 1728 | #define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \ |
fe3b5bfe | 1729 | SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func) |
dd9fbb52 | 1730 | |
42ab0360 JB |
1731 | #define SETUP_END_DEV_ATTRIBUTE(field) \ |
1732 | SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1) | |
c7ebbbce | 1733 | |
79cb1819 JB |
1734 | #define SETUP_EXPANDER_ATTRIBUTE(field) \ |
1735 | SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1) | |
1736 | ||
c7ebbbce | 1737 | /** |
eb44820c | 1738 | * sas_attach_transport - instantiate SAS transport template |
c7ebbbce CH |
1739 | * @ft: SAS transport class function template |
1740 | */ | |
1741 | struct scsi_transport_template * | |
1742 | sas_attach_transport(struct sas_function_template *ft) | |
1743 | { | |
1744 | struct sas_internal *i; | |
1745 | int count; | |
1746 | ||
24669f75 | 1747 | i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL); |
c7ebbbce CH |
1748 | if (!i) |
1749 | return NULL; | |
c7ebbbce | 1750 | |
e02f3f59 | 1751 | i->t.user_scan = sas_user_scan; |
c7ebbbce CH |
1752 | |
1753 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
1754 | i->t.host_attrs.ac.class = &sas_host_class.class; | |
1755 | i->t.host_attrs.ac.match = sas_host_match; | |
1756 | transport_container_register(&i->t.host_attrs); | |
1757 | i->t.host_size = sizeof(struct sas_host_attrs); | |
1758 | ||
1759 | i->phy_attr_cont.ac.class = &sas_phy_class.class; | |
1760 | i->phy_attr_cont.ac.attrs = &i->phy_attrs[0]; | |
1761 | i->phy_attr_cont.ac.match = sas_phy_match; | |
1762 | transport_container_register(&i->phy_attr_cont); | |
1763 | ||
65c92b09 JB |
1764 | i->port_attr_cont.ac.class = &sas_port_class.class; |
1765 | i->port_attr_cont.ac.attrs = &i->port_attrs[0]; | |
1766 | i->port_attr_cont.ac.match = sas_port_match; | |
1767 | transport_container_register(&i->port_attr_cont); | |
1768 | ||
c7ebbbce CH |
1769 | i->rphy_attr_cont.ac.class = &sas_rphy_class.class; |
1770 | i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0]; | |
1771 | i->rphy_attr_cont.ac.match = sas_rphy_match; | |
1772 | transport_container_register(&i->rphy_attr_cont); | |
1773 | ||
42ab0360 JB |
1774 | i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class; |
1775 | i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0]; | |
1776 | i->end_dev_attr_cont.ac.match = sas_end_dev_match; | |
1777 | transport_container_register(&i->end_dev_attr_cont); | |
1778 | ||
79cb1819 JB |
1779 | i->expander_attr_cont.ac.class = &sas_expander_class.class; |
1780 | i->expander_attr_cont.ac.attrs = &i->expander_attrs[0]; | |
1781 | i->expander_attr_cont.ac.match = sas_expander_match; | |
1782 | transport_container_register(&i->expander_attr_cont); | |
1783 | ||
c7ebbbce CH |
1784 | i->f = ft; |
1785 | ||
c7ebbbce | 1786 | count = 0; |
65c92b09 JB |
1787 | SETUP_PHY_ATTRIBUTE(initiator_port_protocols); |
1788 | SETUP_PHY_ATTRIBUTE(target_port_protocols); | |
1789 | SETUP_PHY_ATTRIBUTE(device_type); | |
1790 | SETUP_PHY_ATTRIBUTE(sas_address); | |
1791 | SETUP_PHY_ATTRIBUTE(phy_identifier); | |
65c92b09 JB |
1792 | SETUP_PHY_ATTRIBUTE(negotiated_linkrate); |
1793 | SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw); | |
d24e1eeb | 1794 | SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate); |
65c92b09 | 1795 | SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw); |
d24e1eeb | 1796 | SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate); |
65c92b09 JB |
1797 | |
1798 | SETUP_PHY_ATTRIBUTE(invalid_dword_count); | |
1799 | SETUP_PHY_ATTRIBUTE(running_disparity_error_count); | |
1800 | SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count); | |
1801 | SETUP_PHY_ATTRIBUTE(phy_reset_problem_count); | |
1802 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset); | |
1803 | SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset); | |
acbf167d | 1804 | SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable); |
c7ebbbce CH |
1805 | i->phy_attrs[count] = NULL; |
1806 | ||
65c92b09 JB |
1807 | count = 0; |
1808 | SETUP_PORT_ATTRIBUTE(num_phys); | |
1809 | i->port_attrs[count] = NULL; | |
1810 | ||
c7ebbbce CH |
1811 | count = 0; |
1812 | SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols); | |
1813 | SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols); | |
1814 | SETUP_RPORT_ATTRIBUTE(rphy_device_type); | |
1815 | SETUP_RPORT_ATTRIBUTE(rphy_sas_address); | |
1816 | SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier); | |
cdc43ae3 | 1817 | SETUP_RPORT_ATTRIBUTE(rphy_scsi_target_id); |
dd9fbb52 JB |
1818 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier, |
1819 | get_enclosure_identifier); | |
1820 | SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier, | |
1821 | get_bay_identifier); | |
c7ebbbce CH |
1822 | i->rphy_attrs[count] = NULL; |
1823 | ||
42ab0360 JB |
1824 | count = 0; |
1825 | SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning); | |
1826 | SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout); | |
1827 | SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout); | |
0f88009d JB |
1828 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_supported); |
1829 | SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_enabled); | |
42ab0360 JB |
1830 | i->end_dev_attrs[count] = NULL; |
1831 | ||
79cb1819 JB |
1832 | count = 0; |
1833 | SETUP_EXPANDER_ATTRIBUTE(vendor_id); | |
1834 | SETUP_EXPANDER_ATTRIBUTE(product_id); | |
1835 | SETUP_EXPANDER_ATTRIBUTE(product_rev); | |
1836 | SETUP_EXPANDER_ATTRIBUTE(component_vendor_id); | |
1837 | SETUP_EXPANDER_ATTRIBUTE(component_id); | |
1838 | SETUP_EXPANDER_ATTRIBUTE(component_revision_id); | |
1839 | SETUP_EXPANDER_ATTRIBUTE(level); | |
1840 | i->expander_attrs[count] = NULL; | |
1841 | ||
c7ebbbce CH |
1842 | return &i->t; |
1843 | } | |
1844 | EXPORT_SYMBOL(sas_attach_transport); | |
1845 | ||
1846 | /** | |
eb44820c | 1847 | * sas_release_transport - release SAS transport template instance |
c7ebbbce CH |
1848 | * @t: transport template instance |
1849 | */ | |
1850 | void sas_release_transport(struct scsi_transport_template *t) | |
1851 | { | |
1852 | struct sas_internal *i = to_sas_internal(t); | |
1853 | ||
1854 | transport_container_unregister(&i->t.host_attrs); | |
1855 | transport_container_unregister(&i->phy_attr_cont); | |
65c92b09 | 1856 | transport_container_unregister(&i->port_attr_cont); |
c7ebbbce | 1857 | transport_container_unregister(&i->rphy_attr_cont); |
db82f841 | 1858 | transport_container_unregister(&i->end_dev_attr_cont); |
79cb1819 | 1859 | transport_container_unregister(&i->expander_attr_cont); |
c7ebbbce CH |
1860 | |
1861 | kfree(i); | |
1862 | } | |
1863 | EXPORT_SYMBOL(sas_release_transport); | |
1864 | ||
1865 | static __init int sas_transport_init(void) | |
1866 | { | |
1867 | int error; | |
1868 | ||
1869 | error = transport_class_register(&sas_host_class); | |
1870 | if (error) | |
1871 | goto out; | |
1872 | error = transport_class_register(&sas_phy_class); | |
1873 | if (error) | |
1874 | goto out_unregister_transport; | |
65c92b09 | 1875 | error = transport_class_register(&sas_port_class); |
c7ebbbce CH |
1876 | if (error) |
1877 | goto out_unregister_phy; | |
65c92b09 JB |
1878 | error = transport_class_register(&sas_rphy_class); |
1879 | if (error) | |
1880 | goto out_unregister_port; | |
42ab0360 JB |
1881 | error = transport_class_register(&sas_end_dev_class); |
1882 | if (error) | |
1883 | goto out_unregister_rphy; | |
79cb1819 JB |
1884 | error = transport_class_register(&sas_expander_class); |
1885 | if (error) | |
1886 | goto out_unregister_end_dev; | |
c7ebbbce CH |
1887 | |
1888 | return 0; | |
1889 | ||
79cb1819 JB |
1890 | out_unregister_end_dev: |
1891 | transport_class_unregister(&sas_end_dev_class); | |
42ab0360 JB |
1892 | out_unregister_rphy: |
1893 | transport_class_unregister(&sas_rphy_class); | |
65c92b09 JB |
1894 | out_unregister_port: |
1895 | transport_class_unregister(&sas_port_class); | |
c7ebbbce CH |
1896 | out_unregister_phy: |
1897 | transport_class_unregister(&sas_phy_class); | |
1898 | out_unregister_transport: | |
1899 | transport_class_unregister(&sas_host_class); | |
1900 | out: | |
1901 | return error; | |
1902 | ||
1903 | } | |
1904 | ||
1905 | static void __exit sas_transport_exit(void) | |
1906 | { | |
1907 | transport_class_unregister(&sas_host_class); | |
1908 | transport_class_unregister(&sas_phy_class); | |
65c92b09 | 1909 | transport_class_unregister(&sas_port_class); |
c7ebbbce | 1910 | transport_class_unregister(&sas_rphy_class); |
42ab0360 | 1911 | transport_class_unregister(&sas_end_dev_class); |
79cb1819 | 1912 | transport_class_unregister(&sas_expander_class); |
c7ebbbce CH |
1913 | } |
1914 | ||
1915 | MODULE_AUTHOR("Christoph Hellwig"); | |
86b9c4c1 | 1916 | MODULE_DESCRIPTION("SAS Transport Attributes"); |
c7ebbbce CH |
1917 | MODULE_LICENSE("GPL"); |
1918 | ||
1919 | module_init(sas_transport_init); | |
1920 | module_exit(sas_transport_exit); |