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[SCSI] convert mptsas over to end_device/expander allocations
[net-next-2.6.git] / drivers / scsi / scsi_transport_sas.c
CommitLineData
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,
9 * and various sysfs attributes to expose these topologies and managment
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>
28#include <linux/err.h>
8c65b4a6
TS		 29#include <linux/slab.h>
30#include <linux/string.h>
c7ebbbce 31
e02f3f59 32#include <scsi/scsi.h>
c7ebbbce
CH		 33#include <scsi/scsi_device.h>
34#include <scsi/scsi_host.h>
35#include <scsi/scsi_transport.h>
36#include <scsi/scsi_transport_sas.h>
37
38
39#define SAS_HOST_ATTRS 0
07ba3a95 40#define SAS_PORT_ATTRS 17
a0125641 41#define SAS_RPORT_ATTRS 7
42ab0360 42#define SAS_END_DEV_ATTRS 3
79cb1819 43#define SAS_EXPANDER_ATTRS 7
c7ebbbce
CH		 44
45struct sas_internal {
46 struct scsi_transport_template t;
47 struct sas_function_template *f;
48
49 struct class_device_attribute private_host_attrs[SAS_HOST_ATTRS];
50 struct class_device_attribute private_phy_attrs[SAS_PORT_ATTRS];
51 struct class_device_attribute private_rphy_attrs[SAS_RPORT_ATTRS];
42ab0360 52 struct class_device_attribute private_end_dev_attrs[SAS_END_DEV_ATTRS];
79cb1819 53 struct class_device_attribute private_expander_attrs[SAS_EXPANDER_ATTRS];
c7ebbbce
CH		 54
55 struct transport_container phy_attr_cont;
56 struct transport_container rphy_attr_cont;
42ab0360 57 struct transport_container end_dev_attr_cont;
79cb1819 58 struct transport_container expander_attr_cont;
c7ebbbce
CH		 59
60 /*
61 * The array of null terminated pointers to attributes
62 * needed by scsi_sysfs.c
63 */
64 struct class_device_attribute *host_attrs[SAS_HOST_ATTRS + 1];
65 struct class_device_attribute *phy_attrs[SAS_PORT_ATTRS + 1];
66 struct class_device_attribute *rphy_attrs[SAS_RPORT_ATTRS + 1];
42ab0360 67 struct class_device_attribute *end_dev_attrs[SAS_END_DEV_ATTRS + 1];
79cb1819 68 struct class_device_attribute *expander_attrs[SAS_EXPANDER_ATTRS + 1];
c7ebbbce
CH		 69};
70#define to_sas_internal(tmpl) container_of(tmpl, struct sas_internal, t)
71
72struct sas_host_attrs {
73 struct list_head rphy_list;
e02f3f59 74 struct mutex lock;
c7ebbbce 75 u32 next_target_id;
79cb1819 76 u32 next_expander_id;
c7ebbbce
CH		 77};
78#define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
79
80
81/*
82 * Hack to allow attributes of the same name in different objects.
83 */
84#define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
85 struct class_device_attribute class_device_attr_##_prefix##_##_name = \
86 __ATTR(_name,_mode,_show,_store)
87
88
89/*
90 * Pretty printing helpers
91 */
92
93#define sas_bitfield_name_match(title, table) \
94static ssize_t \
95get_sas_##title##_names(u32 table_key, char *buf) \
96{ \
97 char *prefix = ""; \
98 ssize_t len = 0; \
99 int i; \
100 \
101 for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
102 if (table[i].value & table_key) { \
103 len += sprintf(buf + len, "%s%s", \
104 prefix, table[i].name); \
105 prefix = ", "; \
106 } \
107 } \
108 len += sprintf(buf + len, "\n"); \
109 return len; \
110}
111
112#define sas_bitfield_name_search(title, table) \
113static ssize_t \
114get_sas_##title##_names(u32 table_key, char *buf) \
115{ \
116 ssize_t len = 0; \
117 int i; \
118 \
119 for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \
120 if (table[i].value == table_key) { \
121 len += sprintf(buf + len, "%s", \
122 table[i].name); \
123 break; \
124 } \
125 } \
126 len += sprintf(buf + len, "\n"); \
127 return len; \
128}
129
130static struct {
131 u32 value;
132 char *name;
133} sas_device_type_names[] = {
134 { SAS_PHY_UNUSED, "unused" },
135 { SAS_END_DEVICE, "end device" },
136 { SAS_EDGE_EXPANDER_DEVICE, "edge expander" },
137 { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" },
138};
139sas_bitfield_name_search(device_type, sas_device_type_names)
140
141
142static struct {
143 u32 value;
144 char *name;
145} sas_protocol_names[] = {
146 { SAS_PROTOCOL_SATA, "sata" },
147 { SAS_PROTOCOL_SMP, "smp" },
148 { SAS_PROTOCOL_STP, "stp" },
149 { SAS_PROTOCOL_SSP, "ssp" },
150};
151sas_bitfield_name_match(protocol, sas_protocol_names)
152
153static struct {
154 u32 value;
155 char *name;
156} sas_linkspeed_names[] = {
157 { SAS_LINK_RATE_UNKNOWN, "Unknown" },
158 { SAS_PHY_DISABLED, "Phy disabled" },
159 { SAS_LINK_RATE_FAILED, "Link Rate failed" },
160 { SAS_SATA_SPINUP_HOLD, "Spin-up hold" },
161 { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" },
162 { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" },
7e6dff62 163 { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" },
c7ebbbce
CH		 164};
165sas_bitfield_name_search(linkspeed, sas_linkspeed_names)
166
167
168/*
169 * SAS host attributes
170 */
171
37be6eeb
JB		 172static int sas_host_setup(struct transport_container *tc, struct device *dev,
173 struct class_device *cdev)
c7ebbbce
CH		 174{
175 struct Scsi_Host *shost = dev_to_shost(dev);
176 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
177
178 INIT_LIST_HEAD(&sas_host->rphy_list);
e02f3f59 179 mutex_init(&sas_host->lock);
c7ebbbce 180 sas_host->next_target_id = 0;
79cb1819 181 sas_host->next_expander_id = 0;
c7ebbbce
CH		 182 return 0;
183}
184
185static DECLARE_TRANSPORT_CLASS(sas_host_class,
186 "sas_host", sas_host_setup, NULL, NULL);
187
188static int sas_host_match(struct attribute_container *cont,
189 struct device *dev)
190{
191 struct Scsi_Host *shost;
192 struct sas_internal *i;
193
194 if (!scsi_is_host_device(dev))
195 return 0;
196 shost = dev_to_shost(dev);
197
198 if (!shost->transportt)
199 return 0;
200 if (shost->transportt->host_attrs.ac.class !=
201 &sas_host_class.class)
202 return 0;
203
204 i = to_sas_internal(shost->transportt);
205 return &i->t.host_attrs.ac == cont;
206}
207
208static int do_sas_phy_delete(struct device *dev, void *data)
209{
210 if (scsi_is_sas_phy(dev))
211 sas_phy_delete(dev_to_phy(dev));
212 return 0;
213}
214
215/**
216 * sas_remove_host -- tear down a Scsi_Host's SAS data structures
217 * @shost: Scsi Host that is torn down
218 *
219 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
220 * Must be called just before scsi_remove_host for SAS HBAs.
221 */
222void sas_remove_host(struct Scsi_Host *shost)
223{
224 device_for_each_child(&shost->shost_gendev, NULL, do_sas_phy_delete);
225}
226EXPORT_SYMBOL(sas_remove_host);
227
228
229/*
230 * SAS Port attributes
231 */
232
233#define sas_phy_show_simple(field, name, format_string, cast) \
234static ssize_t \
235show_sas_phy_##name(struct class_device *cdev, char *buf) \
236{ \
237 struct sas_phy *phy = transport_class_to_phy(cdev); \
238 \
239 return snprintf(buf, 20, format_string, cast phy->field); \
240}
241
242#define sas_phy_simple_attr(field, name, format_string, type) \
243 sas_phy_show_simple(field, name, format_string, (type)) \
244static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
245
246#define sas_phy_show_protocol(field, name) \
247static ssize_t \
248show_sas_phy_##name(struct class_device *cdev, char *buf) \
249{ \
250 struct sas_phy *phy = transport_class_to_phy(cdev); \
251 \
252 if (!phy->field) \
253 return snprintf(buf, 20, "none\n"); \
254 return get_sas_protocol_names(phy->field, buf); \
255}
256
257#define sas_phy_protocol_attr(field, name) \
258 sas_phy_show_protocol(field, name) \
259static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
260
261#define sas_phy_show_linkspeed(field) \
262static ssize_t \
263show_sas_phy_##field(struct class_device *cdev, char *buf) \
264{ \
265 struct sas_phy *phy = transport_class_to_phy(cdev); \
266 \
267 return get_sas_linkspeed_names(phy->field, buf); \
268}
269
270#define sas_phy_linkspeed_attr(field) \
271 sas_phy_show_linkspeed(field) \
272static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
273
c3ee74c4
CH		 274#define sas_phy_show_linkerror(field) \
275static ssize_t \
276show_sas_phy_##field(struct class_device *cdev, char *buf) \
277{ \
278 struct sas_phy *phy = transport_class_to_phy(cdev); \
279 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
280 struct sas_internal *i = to_sas_internal(shost->transportt); \
281 int error; \
282 \
ac01bbbd
CH		 283 if (!phy->local_attached) \
284 return -EINVAL; \
285 \
dd9fbb52 286 error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
c3ee74c4
CH		 287 if (error) \
288 return error; \
289 return snprintf(buf, 20, "%u\n", phy->field); \
290}
291
292#define sas_phy_linkerror_attr(field) \
293 sas_phy_show_linkerror(field) \
294static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
295
296
c7ebbbce
CH		 297static ssize_t
298show_sas_device_type(struct class_device *cdev, char *buf)
299{
300 struct sas_phy *phy = transport_class_to_phy(cdev);
301
302 if (!phy->identify.device_type)
303 return snprintf(buf, 20, "none\n");
304 return get_sas_device_type_names(phy->identify.device_type, buf);
305}
c7ebbbce
CH		 306static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
307
07ba3a95
CH		 308static ssize_t do_sas_phy_reset(struct class_device *cdev,
309 size_t count, int hard_reset)
310{
311 struct sas_phy *phy = transport_class_to_phy(cdev);
312 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
313 struct sas_internal *i = to_sas_internal(shost->transportt);
314 int error;
315
316 if (!phy->local_attached)
317 return -EINVAL;
318
319 error = i->f->phy_reset(phy, hard_reset);
320 if (error)
321 return error;
322 return count;
323};
324
325static ssize_t store_sas_link_reset(struct class_device *cdev,
326 const char *buf, size_t count)
327{
328 return do_sas_phy_reset(cdev, count, 0);
329}
330static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
331
332static ssize_t store_sas_hard_reset(struct class_device *cdev,
333 const char *buf, size_t count)
334{
335 return do_sas_phy_reset(cdev, count, 1);
336}
337static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
338
c7ebbbce
CH		 339sas_phy_protocol_attr(identify.initiator_port_protocols,
340 initiator_port_protocols);
341sas_phy_protocol_attr(identify.target_port_protocols,
342 target_port_protocols);
343sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
344 unsigned long long);
345sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
346sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", u8);
347sas_phy_linkspeed_attr(negotiated_linkrate);
348sas_phy_linkspeed_attr(minimum_linkrate_hw);
349sas_phy_linkspeed_attr(minimum_linkrate);
350sas_phy_linkspeed_attr(maximum_linkrate_hw);
351sas_phy_linkspeed_attr(maximum_linkrate);
c3ee74c4
CH		 352sas_phy_linkerror_attr(invalid_dword_count);
353sas_phy_linkerror_attr(running_disparity_error_count);
354sas_phy_linkerror_attr(loss_of_dword_sync_count);
355sas_phy_linkerror_attr(phy_reset_problem_count);
c7ebbbce
CH		 356
357
358static DECLARE_TRANSPORT_CLASS(sas_phy_class,
359 "sas_phy", NULL, NULL, NULL);
360
361static int sas_phy_match(struct attribute_container *cont, struct device *dev)
362{
363 struct Scsi_Host *shost;
364 struct sas_internal *i;
365
366 if (!scsi_is_sas_phy(dev))
367 return 0;
368 shost = dev_to_shost(dev->parent);
369
370 if (!shost->transportt)
371 return 0;
372 if (shost->transportt->host_attrs.ac.class !=
373 &sas_host_class.class)
374 return 0;
375
376 i = to_sas_internal(shost->transportt);
377 return &i->phy_attr_cont.ac == cont;
378}
379
380static void sas_phy_release(struct device *dev)
381{
382 struct sas_phy *phy = dev_to_phy(dev);
383
384 put_device(dev->parent);
385 kfree(phy);
386}
387
388/**
389 * sas_phy_alloc -- allocates and initialize a SAS PHY structure
390 * @parent: Parent device
d99ca418 391 * @number: Phy index
c7ebbbce
CH		 392 *
393 * Allocates an SAS PHY structure. It will be added in the device tree
394 * below the device specified by @parent, which has to be either a Scsi_Host
395 * or sas_rphy.
396 *
397 * Returns:
398 * SAS PHY allocated or %NULL if the allocation failed.
399 */
400struct sas_phy *sas_phy_alloc(struct device *parent, int number)
401{
402 struct Scsi_Host *shost = dev_to_shost(parent);
403 struct sas_phy *phy;
404
24669f75 405 phy = kzalloc(sizeof(*phy), GFP_KERNEL);
c7ebbbce
CH		 406 if (!phy)
407 return NULL;
c7ebbbce
CH		 408
409 get_device(parent);
410
411 phy->number = number;
412
413 device_initialize(&phy->dev);
414 phy->dev.parent = get_device(parent);
415 phy->dev.release = sas_phy_release;
79cb1819
JB		 416 if (scsi_is_sas_expander_device(parent)) {
417 struct sas_rphy *rphy = dev_to_rphy(parent);
418 sprintf(phy->dev.bus_id, "phy-%d-%d:%d", shost->host_no,
419 rphy->scsi_target_id, number);
420 } else
421 sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number);
c7ebbbce
CH		 422
423 transport_setup_device(&phy->dev);
424
425 return phy;
426}
427EXPORT_SYMBOL(sas_phy_alloc);
428
429/**
430 * sas_phy_add -- add a SAS PHY to the device hierachy
431 * @phy: The PHY to be added
432 *
433 * Publishes a SAS PHY to the rest of the system.
434 */
435int sas_phy_add(struct sas_phy *phy)
436{
437 int error;
438
439 error = device_add(&phy->dev);
440 if (!error) {
441 transport_add_device(&phy->dev);
442 transport_configure_device(&phy->dev);
443 }
444
445 return error;
446}
447EXPORT_SYMBOL(sas_phy_add);
448
449/**
450 * sas_phy_free -- free a SAS PHY
451 * @phy: SAS PHY to free
452 *
453 * Frees the specified SAS PHY.
454 *
455 * Note:
456 * This function must only be called on a PHY that has not
457 * sucessfully been added using sas_phy_add().
458 */
459void sas_phy_free(struct sas_phy *phy)
460{
461 transport_destroy_device(&phy->dev);
462 put_device(phy->dev.parent);
463 put_device(phy->dev.parent);
464 put_device(phy->dev.parent);
465 kfree(phy);
466}
467EXPORT_SYMBOL(sas_phy_free);
468
469/**
470 * sas_phy_delete -- remove SAS PHY
471 * @phy: SAS PHY to remove
472 *
473 * Removes the specified SAS PHY. If the SAS PHY has an
474 * associated remote PHY it is removed before.
475 */
476void
477sas_phy_delete(struct sas_phy *phy)
478{
479 struct device *dev = &phy->dev;
480
481 if (phy->rphy)
482 sas_rphy_delete(phy->rphy);
483
484 transport_remove_device(dev);
485 device_del(dev);
486 transport_destroy_device(dev);
487 put_device(dev->parent);
488}
489EXPORT_SYMBOL(sas_phy_delete);
490
491/**
492 * scsi_is_sas_phy -- check if a struct device represents a SAS PHY
493 * @dev: device to check
494 *
495 * Returns:
496 * %1 if the device represents a SAS PHY, %0 else
497 */
498int scsi_is_sas_phy(const struct device *dev)
499{
500 return dev->release == sas_phy_release;
501}
502EXPORT_SYMBOL(scsi_is_sas_phy);
503
504/*
505 * SAS remote PHY attributes.
506 */
507
508#define sas_rphy_show_simple(field, name, format_string, cast) \
509static ssize_t \
510show_sas_rphy_##name(struct class_device *cdev, char *buf) \
511{ \
512 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
513 \
514 return snprintf(buf, 20, format_string, cast rphy->field); \
515}
516
517#define sas_rphy_simple_attr(field, name, format_string, type) \
518 sas_rphy_show_simple(field, name, format_string, (type)) \
519static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
520 show_sas_rphy_##name, NULL)
521
522#define sas_rphy_show_protocol(field, name) \
523static ssize_t \
524show_sas_rphy_##name(struct class_device *cdev, char *buf) \
525{ \
526 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
527 \
528 if (!rphy->field) \
529 return snprintf(buf, 20, "none\n"); \
530 return get_sas_protocol_names(rphy->field, buf); \
531}
532
533#define sas_rphy_protocol_attr(field, name) \
534 sas_rphy_show_protocol(field, name) \
535static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
536 show_sas_rphy_##name, NULL)
537
538static ssize_t
539show_sas_rphy_device_type(struct class_device *cdev, char *buf)
540{
541 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
542
543 if (!rphy->identify.device_type)
544 return snprintf(buf, 20, "none\n");
545 return get_sas_device_type_names(
546 rphy->identify.device_type, buf);
547}
548
549static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
550 show_sas_rphy_device_type, NULL);
551
a0125641
CH		 552static ssize_t
553show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf)
554{
555 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
556 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
557 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
558 struct sas_internal *i = to_sas_internal(shost->transportt);
559 u64 identifier;
560 int error;
561
562 /*
563 * Only devices behind an expander are supported, because the
564 * enclosure identifier is a SMP feature.
565 */
566 if (phy->local_attached)
567 return -EINVAL;
568
569 error = i->f->get_enclosure_identifier(rphy, &identifier);
570 if (error)
571 return error;
572 return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
573}
574
575static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
576 show_sas_rphy_enclosure_identifier, NULL);
577
578static ssize_t
579show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf)
580{
581 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
582 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
583 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
584 struct sas_internal *i = to_sas_internal(shost->transportt);
585 int val;
586
587 if (phy->local_attached)
588 return -EINVAL;
589
590 val = i->f->get_bay_identifier(rphy);
591 if (val < 0)
592 return val;
593 return sprintf(buf, "%d\n", val);
594}
595
596static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
597 show_sas_rphy_bay_identifier, NULL);
598
c7ebbbce
CH		 599sas_rphy_protocol_attr(identify.initiator_port_protocols,
600 initiator_port_protocols);
601sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
602sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
603 unsigned long long);
604sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
605
42ab0360
JB		 606/* only need 8 bytes of data plus header (4 or 8) */
607#define BUF_SIZE 64
608
609int sas_read_port_mode_page(struct scsi_device *sdev)
610{
611 char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
612 struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target);
613 struct sas_end_device *rdev;
614 struct scsi_mode_data mode_data;
615 int res, error;
616
617 BUG_ON(rphy->identify.device_type != SAS_END_DEVICE);
618
619 rdev = rphy_to_end_device(rphy);
620
621 if (!buffer)
622 return -ENOMEM;
623
624 res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
625 &mode_data, NULL);
626
627 error = -EINVAL;
628 if (!scsi_status_is_good(res))
629 goto out;
630
631 msdata = buffer + mode_data.header_length +
632 mode_data.block_descriptor_length;
633
634 if (msdata - buffer > BUF_SIZE - 8)
635 goto out;
636
637 error = 0;
638
639 rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0;
640 rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5];
641 rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7];
642
643 out:
644 kfree(buffer);
645 return error;
646}
647EXPORT_SYMBOL(sas_read_port_mode_page);
648
79cb1819
JB		 649static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
650 "sas_end_device", NULL, NULL, NULL);
651
42ab0360
JB		 652#define sas_end_dev_show_simple(field, name, format_string, cast) \
653static ssize_t \
654show_sas_end_dev_##name(struct class_device *cdev, char *buf) \
655{ \
656 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
657 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
658 \
659 return snprintf(buf, 20, format_string, cast rdev->field); \
660}
661
662#define sas_end_dev_simple_attr(field, name, format_string, type) \
663 sas_end_dev_show_simple(field, name, format_string, (type)) \
664static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
665 show_sas_end_dev_##name, NULL)
666
667sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
668sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout,
669 "%d\n", int);
670sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout,
671 "%d\n", int);
672
79cb1819
JB		 673static DECLARE_TRANSPORT_CLASS(sas_expander_class,
674 "sas_expander", NULL, NULL, NULL);
675
676#define sas_expander_show_simple(field, name, format_string, cast) \
677static ssize_t \
678show_sas_expander_##name(struct class_device *cdev, char *buf) \
679{ \
680 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
681 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
682 \
683 return snprintf(buf, 20, format_string, cast edev->field); \
684}
685
686#define sas_expander_simple_attr(field, name, format_string, type) \
687 sas_expander_show_simple(field, name, format_string, (type)) \
688static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \
689 show_sas_expander_##name, NULL)
690
691sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
692sas_expander_simple_attr(product_id, product_id, "%s\n", char *);
693sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *);
694sas_expander_simple_attr(component_vendor_id, component_vendor_id,
695 "%s\n", char *);
696sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int);
697sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n",
698 unsigned int);
699sas_expander_simple_attr(level, level, "%d\n", int);
42ab0360 700
c7ebbbce
CH		 701static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
702 "sas_rphy", NULL, NULL, NULL);
703
704static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
705{
706 struct Scsi_Host *shost;
707 struct sas_internal *i;
708
709 if (!scsi_is_sas_rphy(dev))
710 return 0;
711 shost = dev_to_shost(dev->parent->parent);
712
713 if (!shost->transportt)
714 return 0;
715 if (shost->transportt->host_attrs.ac.class !=
716 &sas_host_class.class)
717 return 0;
718
719 i = to_sas_internal(shost->transportt);
720 return &i->rphy_attr_cont.ac == cont;
721}
722
42ab0360
JB		 723static int sas_end_dev_match(struct attribute_container *cont,
724 struct device *dev)
725{
726 struct Scsi_Host *shost;
727 struct sas_internal *i;
728 struct sas_rphy *rphy;
729
730 if (!scsi_is_sas_rphy(dev))
731 return 0;
732 shost = dev_to_shost(dev->parent->parent);
733 rphy = dev_to_rphy(dev);
734
735 if (!shost->transportt)
736 return 0;
737 if (shost->transportt->host_attrs.ac.class !=
738 &sas_host_class.class)
739 return 0;
740
741 i = to_sas_internal(shost->transportt);
742 return &i->end_dev_attr_cont.ac == cont &&
743 rphy->identify.device_type == SAS_END_DEVICE &&
744 /* FIXME: remove contained eventually */
745 rphy->contained;
746}
747
79cb1819
JB		 748static int sas_expander_match(struct attribute_container *cont,
749 struct device *dev)
750{
751 struct Scsi_Host *shost;
752 struct sas_internal *i;
753 struct sas_rphy *rphy;
754
755 if (!scsi_is_sas_rphy(dev))
756 return 0;
757 shost = dev_to_shost(dev->parent->parent);
758 rphy = dev_to_rphy(dev);
759
760 if (!shost->transportt)
761 return 0;
762 if (shost->transportt->host_attrs.ac.class !=
763 &sas_host_class.class)
764 return 0;
765
766 i = to_sas_internal(shost->transportt);
767 return &i->expander_attr_cont.ac == cont &&
768 (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
769 rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE) &&
770 /* FIXME: remove contained eventually */
771 rphy->contained;
772}
773
c7ebbbce
CH		 774static void sas_rphy_release(struct device *dev)
775{
776 struct sas_rphy *rphy = dev_to_rphy(dev);
777
778 put_device(dev->parent);
779 kfree(rphy);
780}
781
782/**
783 * sas_rphy_alloc -- allocates and initialize a SAS remote PHY structure
784 * @parent: SAS PHY this remote PHY is conneted to
785 *
786 * Allocates an SAS remote PHY structure, connected to @parent.
787 *
788 * Returns:
789 * SAS PHY allocated or %NULL if the allocation failed.
790 */
791struct sas_rphy *sas_rphy_alloc(struct sas_phy *parent)
792{
793 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
794 struct sas_rphy *rphy;
795
24669f75 796 rphy = kzalloc(sizeof(*rphy), GFP_KERNEL);
c7ebbbce
CH		 797 if (!rphy) {
798 put_device(&parent->dev);
799 return NULL;
800 }
c7ebbbce
CH		 801
802 device_initialize(&rphy->dev);
803 rphy->dev.parent = get_device(&parent->dev);
804 rphy->dev.release = sas_rphy_release;
d99ca418
ME		 805 sprintf(rphy->dev.bus_id, "rphy-%d:%d-%d",
806 shost->host_no, parent->port_identifier, parent->number);
c7ebbbce
CH		 807 transport_setup_device(&rphy->dev);
808
809 return rphy;
810}
811EXPORT_SYMBOL(sas_rphy_alloc);
812
42ab0360
JB		 813/**
814 * sas_end_device_alloc - allocate an rphy for an end device
815 *
816 * Allocates an SAS remote PHY structure, connected to @parent.
817 *
818 * Returns:
819 * SAS PHY allocated or %NULL if the allocation failed.
820 */
821struct sas_rphy *sas_end_device_alloc(struct sas_phy *parent)
822{
823 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
824 struct sas_end_device *rdev;
825
826 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
827 if (!rdev) {
828 put_device(&parent->dev);
829 return NULL;
830 }
831
832 device_initialize(&rdev->rphy.dev);
833 rdev->rphy.dev.parent = get_device(&parent->dev);
834 rdev->rphy.dev.release = sas_rphy_release;
835 sprintf(rdev->rphy.dev.bus_id, "rphy-%d:%d-%d",
836 shost->host_no, parent->port_identifier, parent->number);
837 rdev->rphy.identify.device_type = SAS_END_DEVICE;
838 /* FIXME: mark the rphy as being contained in a larger structure */
839 rdev->rphy.contained = 1;
840 transport_setup_device(&rdev->rphy.dev);
841
842 return &rdev->rphy;
843}
844EXPORT_SYMBOL(sas_end_device_alloc);
845
79cb1819
JB		 846/**
847 * sas_expander_alloc - allocate an rphy for an end device
848 *
849 * Allocates an SAS remote PHY structure, connected to @parent.
850 *
851 * Returns:
852 * SAS PHY allocated or %NULL if the allocation failed.
853 */
854struct sas_rphy *sas_expander_alloc(struct sas_phy *parent,
855 enum sas_device_type type)
856{
857 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
858 struct sas_expander_device *rdev;
859 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
860
861 BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE &&
862 type != SAS_FANOUT_EXPANDER_DEVICE);
863
864 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
865 if (!rdev) {
866 put_device(&parent->dev);
867 return NULL;
868 }
869
870 device_initialize(&rdev->rphy.dev);
871 rdev->rphy.dev.parent = get_device(&parent->dev);
872 rdev->rphy.dev.release = sas_rphy_release;
873 mutex_lock(&sas_host->lock);
874 rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
875 mutex_unlock(&sas_host->lock);
876 sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d",
877 shost->host_no, rdev->rphy.scsi_target_id);
878 rdev->rphy.identify.device_type = type;
879 /* FIXME: mark the rphy as being contained in a larger structure */
880 rdev->rphy.contained = 1;
881 transport_setup_device(&rdev->rphy.dev);
882
883 return &rdev->rphy;
884}
885EXPORT_SYMBOL(sas_expander_alloc);
42ab0360 886
c7ebbbce
CH		 887/**
888 * sas_rphy_add -- add a SAS remote PHY to the device hierachy
889 * @rphy: The remote PHY to be added
890 *
891 * Publishes a SAS remote PHY to the rest of the system.
892 */
893int sas_rphy_add(struct sas_rphy *rphy)
894{
895 struct sas_phy *parent = dev_to_phy(rphy->dev.parent);
896 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
897 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
898 struct sas_identify *identify = &rphy->identify;
899 int error;
900
901 if (parent->rphy)
902 return -ENXIO;
903 parent->rphy = rphy;
904
905 error = device_add(&rphy->dev);
906 if (error)
907 return error;
908 transport_add_device(&rphy->dev);
909 transport_configure_device(&rphy->dev);
910
e02f3f59 911 mutex_lock(&sas_host->lock);
c7ebbbce
CH		 912 list_add_tail(&rphy->list, &sas_host->rphy_list);
913 if (identify->device_type == SAS_END_DEVICE &&
914 (identify->target_port_protocols &
915 (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
916 rphy->scsi_target_id = sas_host->next_target_id++;
e02f3f59 917 mutex_unlock(&sas_host->lock);
c7ebbbce 918
79cb1819
JB		 919 if (identify->device_type == SAS_END_DEVICE &&
920 rphy->scsi_target_id != -1) {
e6bc863c 921 scsi_scan_target(&rphy->dev, parent->port_identifier,
c7ebbbce
CH		 922 rphy->scsi_target_id, ~0, 0);
923 }
924
925 return 0;
926}
927EXPORT_SYMBOL(sas_rphy_add);
928
929/**
930 * sas_rphy_free -- free a SAS remote PHY
931 * @rphy SAS remote PHY to free
932 *
933 * Frees the specified SAS remote PHY.
934 *
935 * Note:
936 * This function must only be called on a remote
937 * PHY that has not sucessfully been added using
938 * sas_rphy_add().
939 */
940void sas_rphy_free(struct sas_rphy *rphy)
941{
942 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
943 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
944
e02f3f59 945 mutex_lock(&sas_host->lock);
c7ebbbce 946 list_del(&rphy->list);
e02f3f59 947 mutex_unlock(&sas_host->lock);
c7ebbbce
CH		 948
949 transport_destroy_device(&rphy->dev);
950 put_device(rphy->dev.parent);
951 put_device(rphy->dev.parent);
952 put_device(rphy->dev.parent);
953 kfree(rphy);
954}
955EXPORT_SYMBOL(sas_rphy_free);
956
957/**
958 * sas_rphy_delete -- remove SAS remote PHY
959 * @rphy: SAS remote PHY to remove
960 *
961 * Removes the specified SAS remote PHY.
962 */
963void
964sas_rphy_delete(struct sas_rphy *rphy)
965{
966 struct device *dev = &rphy->dev;
967 struct sas_phy *parent = dev_to_phy(dev->parent);
968 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
969 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
970
d4054239
CH		 971 switch (rphy->identify.device_type) {
972 case SAS_END_DEVICE:
973 scsi_remove_target(dev);
974 break;
975 case SAS_EDGE_EXPANDER_DEVICE:
976 case SAS_FANOUT_EXPANDER_DEVICE:
977 device_for_each_child(dev, NULL, do_sas_phy_delete);
978 break;
979 default:
980 break;
981 }
c7ebbbce 982
fe8b2304
CH		 983 transport_remove_device(dev);
984 device_del(dev);
985 transport_destroy_device(dev);
c7ebbbce 986
e02f3f59 987 mutex_lock(&sas_host->lock);
c7ebbbce 988 list_del(&rphy->list);
e02f3f59 989 mutex_unlock(&sas_host->lock);
c7ebbbce 990
33b114e9
CH		 991 parent->rphy = NULL;
992
c7ebbbce
CH		 993 put_device(&parent->dev);
994}
995EXPORT_SYMBOL(sas_rphy_delete);
996
997/**
998 * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY
999 * @dev: device to check
1000 *
1001 * Returns:
1002 * %1 if the device represents a SAS remote PHY, %0 else
1003 */
1004int scsi_is_sas_rphy(const struct device *dev)
1005{
1006 return dev->release == sas_rphy_release;
1007}
1008EXPORT_SYMBOL(scsi_is_sas_rphy);
1009
1010
1011/*
1012 * SCSI scan helper
1013 */
1014
e02f3f59
CH		 1015static int sas_user_scan(struct Scsi_Host *shost, uint channel,
1016 uint id, uint lun)
c7ebbbce
CH		 1017{
1018 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1019 struct sas_rphy *rphy;
c7ebbbce 1020
e02f3f59 1021 mutex_lock(&sas_host->lock);
c7ebbbce
CH		 1022 list_for_each_entry(rphy, &sas_host->rphy_list, list) {
1023 struct sas_phy *parent = dev_to_phy(rphy->dev.parent);
e02f3f59
CH		 1024
1025 if (rphy->scsi_target_id == -1)
1026 continue;
1027
e6bc863c 1028 if ((channel == SCAN_WILD_CARD || channel == parent->port_identifier) &&
e02f3f59 1029 (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
e6bc863c 1030 scsi_scan_target(&rphy->dev, parent->port_identifier,
e02f3f59
CH		 1031 rphy->scsi_target_id, lun, 1);
1032 }
c7ebbbce 1033 }
e02f3f59 1034 mutex_unlock(&sas_host->lock);
c7ebbbce 1035
e02f3f59 1036 return 0;
c7ebbbce
CH		 1037}
1038
1039
1040/*
1041 * Setup / Teardown code
1042 */
1043
42ab0360
JB		 1044#define SETUP_TEMPLATE(attrb, field, perm, test) \
1045 i->private_##attrb[count] = class_device_attr_##field; \
1046 i->private_##attrb[count].attr.mode = perm; \
1047 i->private_##attrb[count].store = NULL; \
1048 i->attrb[count] = &i->private_##attrb[count]; \
1049 if (test) \
1050 count++
1051
1052
1053#define SETUP_RPORT_ATTRIBUTE(field) \
1054 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
c7ebbbce 1055
dd9fbb52 1056#define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
42ab0360 1057 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
dd9fbb52 1058
c7ebbbce 1059#define SETUP_PORT_ATTRIBUTE(field) \
42ab0360 1060 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
c7ebbbce 1061
dd9fbb52 1062#define SETUP_OPTIONAL_PORT_ATTRIBUTE(field, func) \
42ab0360 1063 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
dd9fbb52 1064
07ba3a95 1065#define SETUP_PORT_ATTRIBUTE_WRONLY(field) \
42ab0360 1066 SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, 1)
07ba3a95 1067
dd9fbb52 1068#define SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(field, func) \
42ab0360 1069 SETUP_TEMPLATE(phy_attrs, field, S_IWUGO, i->f->func)
dd9fbb52 1070
42ab0360
JB		 1071#define SETUP_END_DEV_ATTRIBUTE(field) \
1072 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
c7ebbbce 1073
79cb1819
JB		 1074#define SETUP_EXPANDER_ATTRIBUTE(field) \
1075 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1076
c7ebbbce
CH		 1077/**
1078 * sas_attach_transport -- instantiate SAS transport template
1079 * @ft: SAS transport class function template
1080 */
1081struct scsi_transport_template *
1082sas_attach_transport(struct sas_function_template *ft)
1083{
1084 struct sas_internal *i;
1085 int count;
1086
24669f75 1087 i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
c7ebbbce
CH		 1088 if (!i)
1089 return NULL;
c7ebbbce 1090
e02f3f59 1091 i->t.user_scan = sas_user_scan;
c7ebbbce
CH		 1092
1093 i->t.host_attrs.ac.attrs = &i->host_attrs[0];
1094 i->t.host_attrs.ac.class = &sas_host_class.class;
1095 i->t.host_attrs.ac.match = sas_host_match;
1096 transport_container_register(&i->t.host_attrs);
1097 i->t.host_size = sizeof(struct sas_host_attrs);
1098
1099 i->phy_attr_cont.ac.class = &sas_phy_class.class;
1100 i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
1101 i->phy_attr_cont.ac.match = sas_phy_match;
1102 transport_container_register(&i->phy_attr_cont);
1103
1104 i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
1105 i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
1106 i->rphy_attr_cont.ac.match = sas_rphy_match;
1107 transport_container_register(&i->rphy_attr_cont);
1108
42ab0360
JB		 1109 i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class;
1110 i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0];
1111 i->end_dev_attr_cont.ac.match = sas_end_dev_match;
1112 transport_container_register(&i->end_dev_attr_cont);
1113
79cb1819
JB		 1114 i->expander_attr_cont.ac.class = &sas_expander_class.class;
1115 i->expander_attr_cont.ac.attrs = &i->expander_attrs[0];
1116 i->expander_attr_cont.ac.match = sas_expander_match;
1117 transport_container_register(&i->expander_attr_cont);
1118
c7ebbbce
CH		 1119 i->f = ft;
1120
1121 count = 0;
1122 i->host_attrs[count] = NULL;
1123
1124 count = 0;
1125 SETUP_PORT_ATTRIBUTE(initiator_port_protocols);
1126 SETUP_PORT_ATTRIBUTE(target_port_protocols);
1127 SETUP_PORT_ATTRIBUTE(device_type);
1128 SETUP_PORT_ATTRIBUTE(sas_address);
1129 SETUP_PORT_ATTRIBUTE(phy_identifier);
1130 SETUP_PORT_ATTRIBUTE(port_identifier);
1131 SETUP_PORT_ATTRIBUTE(negotiated_linkrate);
1132 SETUP_PORT_ATTRIBUTE(minimum_linkrate_hw);
1133 SETUP_PORT_ATTRIBUTE(minimum_linkrate);
1134 SETUP_PORT_ATTRIBUTE(maximum_linkrate_hw);
1135 SETUP_PORT_ATTRIBUTE(maximum_linkrate);
c3ee74c4
CH		 1136
1137 SETUP_PORT_ATTRIBUTE(invalid_dword_count);
1138 SETUP_PORT_ATTRIBUTE(running_disparity_error_count);
1139 SETUP_PORT_ATTRIBUTE(loss_of_dword_sync_count);
1140 SETUP_PORT_ATTRIBUTE(phy_reset_problem_count);
dd9fbb52
JB		 1141 SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(link_reset, phy_reset);
1142 SETUP_OPTIONAL_PORT_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
c7ebbbce
CH		 1143 i->phy_attrs[count] = NULL;
1144
1145 count = 0;
1146 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
1147 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
1148 SETUP_RPORT_ATTRIBUTE(rphy_device_type);
1149 SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
1150 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
dd9fbb52
JB		 1151 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
1152 get_enclosure_identifier);
1153 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
1154 get_bay_identifier);
c7ebbbce
CH		 1155 i->rphy_attrs[count] = NULL;
1156
42ab0360
JB		 1157 count = 0;
1158 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning);
1159 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout);
1160 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout);
1161 i->end_dev_attrs[count] = NULL;
1162
79cb1819
JB		 1163 count = 0;
1164 SETUP_EXPANDER_ATTRIBUTE(vendor_id);
1165 SETUP_EXPANDER_ATTRIBUTE(product_id);
1166 SETUP_EXPANDER_ATTRIBUTE(product_rev);
1167 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id);
1168 SETUP_EXPANDER_ATTRIBUTE(component_id);
1169 SETUP_EXPANDER_ATTRIBUTE(component_revision_id);
1170 SETUP_EXPANDER_ATTRIBUTE(level);
1171 i->expander_attrs[count] = NULL;
1172
c7ebbbce
CH		 1173 return &i->t;
1174}
1175EXPORT_SYMBOL(sas_attach_transport);
1176
1177/**
1178 * sas_release_transport -- release SAS transport template instance
1179 * @t: transport template instance
1180 */
1181void sas_release_transport(struct scsi_transport_template *t)
1182{
1183 struct sas_internal *i = to_sas_internal(t);
1184
1185 transport_container_unregister(&i->t.host_attrs);
1186 transport_container_unregister(&i->phy_attr_cont);
1187 transport_container_unregister(&i->rphy_attr_cont);
db82f841 1188 transport_container_unregister(&i->end_dev_attr_cont);
79cb1819 1189 transport_container_unregister(&i->expander_attr_cont);
c7ebbbce
CH		 1190
1191 kfree(i);
1192}
1193EXPORT_SYMBOL(sas_release_transport);
1194
1195static __init int sas_transport_init(void)
1196{
1197 int error;
1198
1199 error = transport_class_register(&sas_host_class);
1200 if (error)
1201 goto out;
1202 error = transport_class_register(&sas_phy_class);
1203 if (error)
1204 goto out_unregister_transport;
1205 error = transport_class_register(&sas_rphy_class);
1206 if (error)
1207 goto out_unregister_phy;
42ab0360
JB		 1208 error = transport_class_register(&sas_end_dev_class);
1209 if (error)
1210 goto out_unregister_rphy;
79cb1819
JB		 1211 error = transport_class_register(&sas_expander_class);
1212 if (error)
1213 goto out_unregister_end_dev;
c7ebbbce
CH		 1214
1215 return 0;
1216
79cb1819
JB		 1217 out_unregister_end_dev:
1218 transport_class_unregister(&sas_end_dev_class);
42ab0360
JB		 1219 out_unregister_rphy:
1220 transport_class_unregister(&sas_rphy_class);
c7ebbbce
CH		 1221 out_unregister_phy:
1222 transport_class_unregister(&sas_phy_class);
1223 out_unregister_transport:
1224 transport_class_unregister(&sas_host_class);
1225 out:
1226 return error;
1227
1228}
1229
1230static void __exit sas_transport_exit(void)
1231{
1232 transport_class_unregister(&sas_host_class);
1233 transport_class_unregister(&sas_phy_class);
1234 transport_class_unregister(&sas_rphy_class);
42ab0360 1235 transport_class_unregister(&sas_end_dev_class);
79cb1819 1236 transport_class_unregister(&sas_expander_class);
c7ebbbce
CH		 1237}
1238
1239MODULE_AUTHOR("Christoph Hellwig");
1240MODULE_DESCRIPTION("SAS Transphy Attributes");
1241MODULE_LICENSE("GPL");
1242
1243module_init(sas_transport_init);
1244module_exit(sas_transport_exit);
Clone of davem's net-next-2.6 tree