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26#include <linux/init.h>
27#include <linux/module.h>
28#include <linux/jiffies.h>
29#include <linux/err.h>
30#include <linux/slab.h>
31#include <linux/string.h>
32#include <linux/blkdev.h>
33#include <linux/bsg.h>
34
35#include <scsi/scsi.h>
36#include <scsi/scsi_device.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_transport.h>
39#include <scsi/scsi_transport_sas.h>
40
41#include "scsi_sas_internal.h"
42struct sas_host_attrs {
43 struct list_head rphy_list;
44 struct mutex lock;
45 struct request_queue *q;
46 u32 next_target_id;
47 u32 next_expander_id;
48 int next_port_id;
49};
50#define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
51
52
53
54
55
56#define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
57 struct class_device_attribute class_device_attr_##_prefix##_##_name = \
58 __ATTR(_name,_mode,_show,_store)
59
60
61
62
63
64
65#define sas_bitfield_name_match(title, table) \
66static ssize_t \
67get_sas_##title##_names(u32 table_key, char *buf) \
68{ \
69 char *prefix = ""; \
70 ssize_t len = 0; \
71 int i; \
72 \
73 for (i = 0; i < ARRAY_SIZE(table); i++) { \
74 if (table[i].value & table_key) { \
75 len += sprintf(buf + len, "%s%s", \
76 prefix, table[i].name); \
77 prefix = ", "; \
78 } \
79 } \
80 len += sprintf(buf + len, "\n"); \
81 return len; \
82}
83
84#define sas_bitfield_name_set(title, table) \
85static ssize_t \
86set_sas_##title##_names(u32 *table_key, const char *buf) \
87{ \
88 ssize_t len = 0; \
89 int i; \
90 \
91 for (i = 0; i < ARRAY_SIZE(table); i++) { \
92 len = strlen(table[i].name); \
93 if (strncmp(buf, table[i].name, len) == 0 && \
94 (buf[len] == '\n' || buf[len] == '\0')) { \
95 *table_key = table[i].value; \
96 return 0; \
97 } \
98 } \
99 return -EINVAL; \
100}
101
102#define sas_bitfield_name_search(title, table) \
103static ssize_t \
104get_sas_##title##_names(u32 table_key, char *buf) \
105{ \
106 ssize_t len = 0; \
107 int i; \
108 \
109 for (i = 0; i < ARRAY_SIZE(table); i++) { \
110 if (table[i].value == table_key) { \
111 len += sprintf(buf + len, "%s", \
112 table[i].name); \
113 break; \
114 } \
115 } \
116 len += sprintf(buf + len, "\n"); \
117 return len; \
118}
119
120static struct {
121 u32 value;
122 char *name;
123} sas_device_type_names[] = {
124 { SAS_PHY_UNUSED, "unused" },
125 { SAS_END_DEVICE, "end device" },
126 { SAS_EDGE_EXPANDER_DEVICE, "edge expander" },
127 { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" },
128};
129sas_bitfield_name_search(device_type, sas_device_type_names)
130
131
132static struct {
133 u32 value;
134 char *name;
135} sas_protocol_names[] = {
136 { SAS_PROTOCOL_SATA, "sata" },
137 { SAS_PROTOCOL_SMP, "smp" },
138 { SAS_PROTOCOL_STP, "stp" },
139 { SAS_PROTOCOL_SSP, "ssp" },
140};
141sas_bitfield_name_match(protocol, sas_protocol_names)
142
143static struct {
144 u32 value;
145 char *name;
146} sas_linkspeed_names[] = {
147 { SAS_LINK_RATE_UNKNOWN, "Unknown" },
148 { SAS_PHY_DISABLED, "Phy disabled" },
149 { SAS_LINK_RATE_FAILED, "Link Rate failed" },
150 { SAS_SATA_SPINUP_HOLD, "Spin-up hold" },
151 { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" },
152 { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" },
153 { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" },
154};
155sas_bitfield_name_search(linkspeed, sas_linkspeed_names)
156sas_bitfield_name_set(linkspeed, sas_linkspeed_names)
157
158static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost,
159 struct sas_rphy *rphy)
160{
161 struct request *req;
162 int ret;
163 int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *);
164
165 while (!blk_queue_plugged(q)) {
166 req = elv_next_request(q);
167 if (!req)
168 break;
169
170 blkdev_dequeue_request(req);
171
172 spin_unlock_irq(q->queue_lock);
173
174 handler = to_sas_internal(shost->transportt)->f->smp_handler;
175 ret = handler(shost, rphy, req);
176
177 spin_lock_irq(q->queue_lock);
178
179 req->end_io(req, ret);
180 }
181}
182
183static void sas_host_smp_request(struct request_queue *q)
184{
185 sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL);
186}
187
188static void sas_non_host_smp_request(struct request_queue *q)
189{
190 struct sas_rphy *rphy = q->queuedata;
191 sas_smp_request(q, rphy_to_shost(rphy), rphy);
192}
193
194static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
195{
196 struct request_queue *q;
197 int error;
198 struct device *dev;
199 char namebuf[BUS_ID_SIZE];
200 const char *name;
201
202 if (!to_sas_internal(shost->transportt)->f->smp_handler) {
203 printk("%s can't handle SMP requests\n", shost->hostt->name);
204 return 0;
205 }
206
207 if (rphy) {
208 q = blk_init_queue(sas_non_host_smp_request, NULL);
209 dev = &rphy->dev;
210 name = dev->bus_id;
211 } else {
212 q = blk_init_queue(sas_host_smp_request, NULL);
213 dev = &shost->shost_gendev;
214 snprintf(namebuf, sizeof(namebuf),
215 "sas_host%d", shost->host_no);
216 name = namebuf;
217 }
218 if (!q)
219 return -ENOMEM;
220
221 error = bsg_register_queue(q, dev, name);
222 if (error) {
223 blk_cleanup_queue(q);
224 return -ENOMEM;
225 }
226
227 if (rphy)
228 rphy->q = q;
229 else
230 to_sas_host_attrs(shost)->q = q;
231
232 if (rphy)
233 q->queuedata = rphy;
234 else
235 q->queuedata = shost;
236
237 set_bit(QUEUE_FLAG_BIDI, &q->queue_flags);
238
239 return 0;
240}
241
242static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy)
243{
244 struct request_queue *q;
245
246 if (rphy)
247 q = rphy->q;
248 else
249 q = to_sas_host_attrs(shost)->q;
250
251 if (!q)
252 return;
253
254 bsg_unregister_queue(q);
255 blk_cleanup_queue(q);
256}
257
258
259
260
261
262static int sas_host_setup(struct transport_container *tc, struct device *dev,
263 struct class_device *cdev)
264{
265 struct Scsi_Host *shost = dev_to_shost(dev);
266 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
267
268 INIT_LIST_HEAD(&sas_host->rphy_list);
269 mutex_init(&sas_host->lock);
270 sas_host->next_target_id = 0;
271 sas_host->next_expander_id = 0;
272 sas_host->next_port_id = 0;
273
274 if (sas_bsg_initialize(shost, NULL))
275 dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n",
276 shost->host_no);
277
278 return 0;
279}
280
281static int sas_host_remove(struct transport_container *tc, struct device *dev,
282 struct class_device *cdev)
283{
284 struct Scsi_Host *shost = dev_to_shost(dev);
285
286 sas_bsg_remove(shost, NULL);
287
288 return 0;
289}
290
291static DECLARE_TRANSPORT_CLASS(sas_host_class,
292 "sas_host", sas_host_setup, sas_host_remove, NULL);
293
294static int sas_host_match(struct attribute_container *cont,
295 struct device *dev)
296{
297 struct Scsi_Host *shost;
298 struct sas_internal *i;
299
300 if (!scsi_is_host_device(dev))
301 return 0;
302 shost = dev_to_shost(dev);
303
304 if (!shost->transportt)
305 return 0;
306 if (shost->transportt->host_attrs.ac.class !=
307 &sas_host_class.class)
308 return 0;
309
310 i = to_sas_internal(shost->transportt);
311 return &i->t.host_attrs.ac == cont;
312}
313
314static int do_sas_phy_delete(struct device *dev, void *data)
315{
316 int pass = (int)(unsigned long)data;
317
318 if (pass == 0 && scsi_is_sas_port(dev))
319 sas_port_delete(dev_to_sas_port(dev));
320 else if (pass == 1 && scsi_is_sas_phy(dev))
321 sas_phy_delete(dev_to_phy(dev));
322 return 0;
323}
324
325
326
327
328
329
330
331void sas_remove_children(struct device *dev)
332{
333 device_for_each_child(dev, (void *)0, do_sas_phy_delete);
334 device_for_each_child(dev, (void *)1, do_sas_phy_delete);
335}
336EXPORT_SYMBOL(sas_remove_children);
337
338
339
340
341
342
343
344
345void sas_remove_host(struct Scsi_Host *shost)
346{
347 sas_remove_children(&shost->shost_gendev);
348}
349EXPORT_SYMBOL(sas_remove_host);
350
351
352
353
354
355
356#define sas_phy_show_simple(field, name, format_string, cast) \
357static ssize_t \
358show_sas_phy_##name(struct class_device *cdev, char *buf) \
359{ \
360 struct sas_phy *phy = transport_class_to_phy(cdev); \
361 \
362 return snprintf(buf, 20, format_string, cast phy->field); \
363}
364
365#define sas_phy_simple_attr(field, name, format_string, type) \
366 sas_phy_show_simple(field, name, format_string, (type)) \
367static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
368
369#define sas_phy_show_protocol(field, name) \
370static ssize_t \
371show_sas_phy_##name(struct class_device *cdev, char *buf) \
372{ \
373 struct sas_phy *phy = transport_class_to_phy(cdev); \
374 \
375 if (!phy->field) \
376 return snprintf(buf, 20, "none\n"); \
377 return get_sas_protocol_names(phy->field, buf); \
378}
379
380#define sas_phy_protocol_attr(field, name) \
381 sas_phy_show_protocol(field, name) \
382static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
383
384#define sas_phy_show_linkspeed(field) \
385static ssize_t \
386show_sas_phy_##field(struct class_device *cdev, char *buf) \
387{ \
388 struct sas_phy *phy = transport_class_to_phy(cdev); \
389 \
390 return get_sas_linkspeed_names(phy->field, buf); \
391}
392
393
394#define sas_phy_store_linkspeed(field) \
395static ssize_t \
396store_sas_phy_##field(struct class_device *cdev, const char *buf, \
397 size_t count) \
398{ \
399 struct sas_phy *phy = transport_class_to_phy(cdev); \
400 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
401 struct sas_internal *i = to_sas_internal(shost->transportt); \
402 u32 value; \
403 struct sas_phy_linkrates rates = {0}; \
404 int error; \
405 \
406 error = set_sas_linkspeed_names(&value, buf); \
407 if (error) \
408 return error; \
409 rates.field = value; \
410 error = i->f->set_phy_speed(phy, &rates); \
411 \
412 return error ? error : count; \
413}
414
415#define sas_phy_linkspeed_rw_attr(field) \
416 sas_phy_show_linkspeed(field) \
417 sas_phy_store_linkspeed(field) \
418static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \
419 store_sas_phy_##field)
420
421#define sas_phy_linkspeed_attr(field) \
422 sas_phy_show_linkspeed(field) \
423static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
424
425
426#define sas_phy_show_linkerror(field) \
427static ssize_t \
428show_sas_phy_##field(struct class_device *cdev, char *buf) \
429{ \
430 struct sas_phy *phy = transport_class_to_phy(cdev); \
431 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
432 struct sas_internal *i = to_sas_internal(shost->transportt); \
433 int error; \
434 \
435 error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
436 if (error) \
437 return error; \
438 return snprintf(buf, 20, "%u\n", phy->field); \
439}
440
441#define sas_phy_linkerror_attr(field) \
442 sas_phy_show_linkerror(field) \
443static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
444
445
446static ssize_t
447show_sas_device_type(struct class_device *cdev, char *buf)
448{
449 struct sas_phy *phy = transport_class_to_phy(cdev);
450
451 if (!phy->identify.device_type)
452 return snprintf(buf, 20, "none\n");
453 return get_sas_device_type_names(phy->identify.device_type, buf);
454}
455static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
456
457static ssize_t do_sas_phy_enable(struct class_device *cdev,
458 size_t count, int enable)
459{
460 struct sas_phy *phy = transport_class_to_phy(cdev);
461 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
462 struct sas_internal *i = to_sas_internal(shost->transportt);
463 int error;
464
465 error = i->f->phy_enable(phy, enable);
466 if (error)
467 return error;
468 phy->enabled = enable;
469 return count;
470};
471
472static ssize_t store_sas_phy_enable(struct class_device *cdev,
473 const char *buf, size_t count)
474{
475 if (count < 1)
476 return -EINVAL;
477
478 switch (buf[0]) {
479 case '0':
480 do_sas_phy_enable(cdev, count, 0);
481 break;
482 case '1':
483 do_sas_phy_enable(cdev, count, 1);
484 break;
485 default:
486 return -EINVAL;
487 }
488
489 return count;
490}
491
492static ssize_t show_sas_phy_enable(struct class_device *cdev, char *buf)
493{
494 struct sas_phy *phy = transport_class_to_phy(cdev);
495
496 return snprintf(buf, 20, "%d", phy->enabled);
497}
498
499static CLASS_DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable,
500 store_sas_phy_enable);
501
502static ssize_t do_sas_phy_reset(struct class_device *cdev,
503 size_t count, int hard_reset)
504{
505 struct sas_phy *phy = transport_class_to_phy(cdev);
506 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
507 struct sas_internal *i = to_sas_internal(shost->transportt);
508 int error;
509
510 error = i->f->phy_reset(phy, hard_reset);
511 if (error)
512 return error;
513 return count;
514};
515
516static ssize_t store_sas_link_reset(struct class_device *cdev,
517 const char *buf, size_t count)
518{
519 return do_sas_phy_reset(cdev, count, 0);
520}
521static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
522
523static ssize_t store_sas_hard_reset(struct class_device *cdev,
524 const char *buf, size_t count)
525{
526 return do_sas_phy_reset(cdev, count, 1);
527}
528static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
529
530sas_phy_protocol_attr(identify.initiator_port_protocols,
531 initiator_port_protocols);
532sas_phy_protocol_attr(identify.target_port_protocols,
533 target_port_protocols);
534sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
535 unsigned long long);
536sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
537
538sas_phy_linkspeed_attr(negotiated_linkrate);
539sas_phy_linkspeed_attr(minimum_linkrate_hw);
540sas_phy_linkspeed_rw_attr(minimum_linkrate);
541sas_phy_linkspeed_attr(maximum_linkrate_hw);
542sas_phy_linkspeed_rw_attr(maximum_linkrate);
543sas_phy_linkerror_attr(invalid_dword_count);
544sas_phy_linkerror_attr(running_disparity_error_count);
545sas_phy_linkerror_attr(loss_of_dword_sync_count);
546sas_phy_linkerror_attr(phy_reset_problem_count);
547
548
549static DECLARE_TRANSPORT_CLASS(sas_phy_class,
550 "sas_phy", NULL, NULL, NULL);
551
552static int sas_phy_match(struct attribute_container *cont, struct device *dev)
553{
554 struct Scsi_Host *shost;
555 struct sas_internal *i;
556
557 if (!scsi_is_sas_phy(dev))
558 return 0;
559 shost = dev_to_shost(dev->parent);
560
561 if (!shost->transportt)
562 return 0;
563 if (shost->transportt->host_attrs.ac.class !=
564 &sas_host_class.class)
565 return 0;
566
567 i = to_sas_internal(shost->transportt);
568 return &i->phy_attr_cont.ac == cont;
569}
570
571static void sas_phy_release(struct device *dev)
572{
573 struct sas_phy *phy = dev_to_phy(dev);
574
575 put_device(dev->parent);
576 kfree(phy);
577}
578
579
580
581
582
583
584
585
586
587
588
589
590
591struct sas_phy *sas_phy_alloc(struct device *parent, int number)
592{
593 struct Scsi_Host *shost = dev_to_shost(parent);
594 struct sas_phy *phy;
595
596 phy = kzalloc(sizeof(*phy), GFP_KERNEL);
597 if (!phy)
598 return NULL;
599
600 phy->number = number;
601 phy->enabled = 1;
602
603 device_initialize(&phy->dev);
604 phy->dev.parent = get_device(parent);
605 phy->dev.release = sas_phy_release;
606 INIT_LIST_HEAD(&phy->port_siblings);
607 if (scsi_is_sas_expander_device(parent)) {
608 struct sas_rphy *rphy = dev_to_rphy(parent);
609 sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no,
610 rphy->scsi_target_id, number);
611 } else
612 sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number);
613
614 transport_setup_device(&phy->dev);
615
616 return phy;
617}
618EXPORT_SYMBOL(sas_phy_alloc);
619
620
621
622
623
624
625
626int sas_phy_add(struct sas_phy *phy)
627{
628 int error;
629
630 error = device_add(&phy->dev);
631 if (!error) {
632 transport_add_device(&phy->dev);
633 transport_configure_device(&phy->dev);
634 }
635
636 return error;
637}
638EXPORT_SYMBOL(sas_phy_add);
639
640
641
642
643
644
645
646
647
648
649
650void sas_phy_free(struct sas_phy *phy)
651{
652 transport_destroy_device(&phy->dev);
653 put_device(&phy->dev);
654}
655EXPORT_SYMBOL(sas_phy_free);
656
657
658
659
660
661
662
663
664void
665sas_phy_delete(struct sas_phy *phy)
666{
667 struct device *dev = &phy->dev;
668
669
670 BUG_ON(!list_empty(&phy->port_siblings));
671
672 transport_remove_device(dev);
673 device_del(dev);
674 transport_destroy_device(dev);
675 put_device(dev);
676}
677EXPORT_SYMBOL(sas_phy_delete);
678
679
680
681
682
683
684
685
686int scsi_is_sas_phy(const struct device *dev)
687{
688 return dev->release == sas_phy_release;
689}
690EXPORT_SYMBOL(scsi_is_sas_phy);
691
692
693
694
695#define sas_port_show_simple(field, name, format_string, cast) \
696static ssize_t \
697show_sas_port_##name(struct class_device *cdev, char *buf) \
698{ \
699 struct sas_port *port = transport_class_to_sas_port(cdev); \
700 \
701 return snprintf(buf, 20, format_string, cast port->field); \
702}
703
704#define sas_port_simple_attr(field, name, format_string, type) \
705 sas_port_show_simple(field, name, format_string, (type)) \
706static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
707
708sas_port_simple_attr(num_phys, num_phys, "%d\n", int);
709
710static DECLARE_TRANSPORT_CLASS(sas_port_class,
711 "sas_port", NULL, NULL, NULL);
712
713static int sas_port_match(struct attribute_container *cont, struct device *dev)
714{
715 struct Scsi_Host *shost;
716 struct sas_internal *i;
717
718 if (!scsi_is_sas_port(dev))
719 return 0;
720 shost = dev_to_shost(dev->parent);
721
722 if (!shost->transportt)
723 return 0;
724 if (shost->transportt->host_attrs.ac.class !=
725 &sas_host_class.class)
726 return 0;
727
728 i = to_sas_internal(shost->transportt);
729 return &i->port_attr_cont.ac == cont;
730}
731
732
733static void sas_port_release(struct device *dev)
734{
735 struct sas_port *port = dev_to_sas_port(dev);
736
737 BUG_ON(!list_empty(&port->phy_list));
738
739 put_device(dev->parent);
740 kfree(port);
741}
742
743static void sas_port_create_link(struct sas_port *port,
744 struct sas_phy *phy)
745{
746 int res;
747
748 res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj,
749 phy->dev.bus_id);
750 if (res)
751 goto err;
752 res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port");
753 if (res)
754 goto err;
755 return;
756err:
757 printk(KERN_ERR "%s: Cannot create port links, err=%d\n",
758 __FUNCTION__, res);
759}
760
761static void sas_port_delete_link(struct sas_port *port,
762 struct sas_phy *phy)
763{
764 sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id);
765 sysfs_remove_link(&phy->dev.kobj, "port");
766}
767
768
769
770
771
772
773
774
775
776
777
778
779struct sas_port *sas_port_alloc(struct device *parent, int port_id)
780{
781 struct Scsi_Host *shost = dev_to_shost(parent);
782 struct sas_port *port;
783
784 port = kzalloc(sizeof(*port), GFP_KERNEL);
785 if (!port)
786 return NULL;
787
788 port->port_identifier = port_id;
789
790 device_initialize(&port->dev);
791
792 port->dev.parent = get_device(parent);
793 port->dev.release = sas_port_release;
794
795 mutex_init(&port->phy_list_mutex);
796 INIT_LIST_HEAD(&port->phy_list);
797
798 if (scsi_is_sas_expander_device(parent)) {
799 struct sas_rphy *rphy = dev_to_rphy(parent);
800 sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no,
801 rphy->scsi_target_id, port->port_identifier);
802 } else
803 sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no,
804 port->port_identifier);
805
806 transport_setup_device(&port->dev);
807
808 return port;
809}
810EXPORT_SYMBOL(sas_port_alloc);
811
812
813
814
815
816
817
818
819
820
821
822
823
824struct sas_port *sas_port_alloc_num(struct device *parent)
825{
826 int index;
827 struct Scsi_Host *shost = dev_to_shost(parent);
828 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
829
830
831 mutex_lock(&sas_host->lock);
832 if (scsi_is_sas_expander_device(parent)) {
833 struct sas_rphy *rphy = dev_to_rphy(parent);
834 struct sas_expander_device *exp = rphy_to_expander_device(rphy);
835
836 index = exp->next_port_id++;
837 } else
838 index = sas_host->next_port_id++;
839 mutex_unlock(&sas_host->lock);
840 return sas_port_alloc(parent, index);
841}
842EXPORT_SYMBOL(sas_port_alloc_num);
843
844
845
846
847
848
849
850
851int sas_port_add(struct sas_port *port)
852{
853 int error;
854
855
856 BUG_ON(!list_empty(&port->phy_list));
857
858 error = device_add(&port->dev);
859
860 if (error)
861 return error;
862
863 transport_add_device(&port->dev);
864 transport_configure_device(&port->dev);
865
866 return 0;
867}
868EXPORT_SYMBOL(sas_port_add);
869
870
871
872
873
874
875
876
877
878
879
880void sas_port_free(struct sas_port *port)
881{
882 transport_destroy_device(&port->dev);
883 put_device(&port->dev);
884}
885EXPORT_SYMBOL(sas_port_free);
886
887
888
889
890
891
892
893
894void sas_port_delete(struct sas_port *port)
895{
896 struct device *dev = &port->dev;
897 struct sas_phy *phy, *tmp_phy;
898
899 if (port->rphy) {
900 sas_rphy_delete(port->rphy);
901 port->rphy = NULL;
902 }
903
904 mutex_lock(&port->phy_list_mutex);
905 list_for_each_entry_safe(phy, tmp_phy, &port->phy_list,
906 port_siblings) {
907 sas_port_delete_link(port, phy);
908 list_del_init(&phy->port_siblings);
909 }
910 mutex_unlock(&port->phy_list_mutex);
911
912 if (port->is_backlink) {
913 struct device *parent = port->dev.parent;
914
915 sysfs_remove_link(&port->dev.kobj, parent->bus_id);
916 port->is_backlink = 0;
917 }
918
919 transport_remove_device(dev);
920 device_del(dev);
921 transport_destroy_device(dev);
922 put_device(dev);
923}
924EXPORT_SYMBOL(sas_port_delete);
925
926
927
928
929
930
931
932
933int scsi_is_sas_port(const struct device *dev)
934{
935 return dev->release == sas_port_release;
936}
937EXPORT_SYMBOL(scsi_is_sas_port);
938
939
940
941
942
943
944
945
946
947
948
949
950
951void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy)
952{
953 mutex_lock(&port->phy_list_mutex);
954 if (unlikely(!list_empty(&phy->port_siblings))) {
955
956 struct sas_phy *tmp;
957
958 list_for_each_entry(tmp, &port->phy_list, port_siblings)
959 if (tmp == phy)
960 break;
961
962
963 if (unlikely(tmp != phy)) {
964 dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id);
965 BUG();
966 }
967 } else {
968 sas_port_create_link(port, phy);
969 list_add_tail(&phy->port_siblings, &port->phy_list);
970 port->num_phys++;
971 }
972 mutex_unlock(&port->phy_list_mutex);
973}
974EXPORT_SYMBOL(sas_port_add_phy);
975
976
977
978
979
980
981
982
983
984void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy)
985{
986 mutex_lock(&port->phy_list_mutex);
987 sas_port_delete_link(port, phy);
988 list_del_init(&phy->port_siblings);
989 port->num_phys--;
990 mutex_unlock(&port->phy_list_mutex);
991}
992EXPORT_SYMBOL(sas_port_delete_phy);
993
994void sas_port_mark_backlink(struct sas_port *port)
995{
996 int res;
997 struct device *parent = port->dev.parent->parent->parent;
998
999 if (port->is_backlink)
1000 return;
1001 port->is_backlink = 1;
1002 res = sysfs_create_link(&port->dev.kobj, &parent->kobj,
1003 parent->bus_id);
1004 if (res)
1005 goto err;
1006 return;
1007err:
1008 printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n",
1009 __FUNCTION__, res);
1010
1011}
1012EXPORT_SYMBOL(sas_port_mark_backlink);
1013
1014
1015
1016
1017
1018#define sas_rphy_show_simple(field, name, format_string, cast) \
1019static ssize_t \
1020show_sas_rphy_##name(struct class_device *cdev, char *buf) \
1021{ \
1022 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1023 \
1024 return snprintf(buf, 20, format_string, cast rphy->field); \
1025}
1026
1027#define sas_rphy_simple_attr(field, name, format_string, type) \
1028 sas_rphy_show_simple(field, name, format_string, (type)) \
1029static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1030 show_sas_rphy_##name, NULL)
1031
1032#define sas_rphy_show_protocol(field, name) \
1033static ssize_t \
1034show_sas_rphy_##name(struct class_device *cdev, char *buf) \
1035{ \
1036 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1037 \
1038 if (!rphy->field) \
1039 return snprintf(buf, 20, "none\n"); \
1040 return get_sas_protocol_names(rphy->field, buf); \
1041}
1042
1043#define sas_rphy_protocol_attr(field, name) \
1044 sas_rphy_show_protocol(field, name) \
1045static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1046 show_sas_rphy_##name, NULL)
1047
1048static ssize_t
1049show_sas_rphy_device_type(struct class_device *cdev, char *buf)
1050{
1051 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
1052
1053 if (!rphy->identify.device_type)
1054 return snprintf(buf, 20, "none\n");
1055 return get_sas_device_type_names(
1056 rphy->identify.device_type, buf);
1057}
1058
1059static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
1060 show_sas_rphy_device_type, NULL);
1061
1062static ssize_t
1063show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf)
1064{
1065 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
1066 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1067 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1068 struct sas_internal *i = to_sas_internal(shost->transportt);
1069 u64 identifier;
1070 int error;
1071
1072
1073
1074
1075
1076 if (scsi_is_sas_phy_local(phy))
1077 return -EINVAL;
1078
1079 error = i->f->get_enclosure_identifier(rphy, &identifier);
1080 if (error)
1081 return error;
1082 return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
1083}
1084
1085static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
1086 show_sas_rphy_enclosure_identifier, NULL);
1087
1088static ssize_t
1089show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf)
1090{
1091 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
1092 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1093 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1094 struct sas_internal *i = to_sas_internal(shost->transportt);
1095 int val;
1096
1097 if (scsi_is_sas_phy_local(phy))
1098 return -EINVAL;
1099
1100 val = i->f->get_bay_identifier(rphy);
1101 if (val < 0)
1102 return val;
1103 return sprintf(buf, "%d\n", val);
1104}
1105
1106static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
1107 show_sas_rphy_bay_identifier, NULL);
1108
1109sas_rphy_protocol_attr(identify.initiator_port_protocols,
1110 initiator_port_protocols);
1111sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
1112sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
1113 unsigned long long);
1114sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
1115
1116
1117#define BUF_SIZE 64
1118
1119int sas_read_port_mode_page(struct scsi_device *sdev)
1120{
1121 char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
1122 struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target);
1123 struct sas_end_device *rdev;
1124 struct scsi_mode_data mode_data;
1125 int res, error;
1126
1127 BUG_ON(rphy->identify.device_type != SAS_END_DEVICE);
1128
1129 rdev = rphy_to_end_device(rphy);
1130
1131 if (!buffer)
1132 return -ENOMEM;
1133
1134 res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
1135 &mode_data, NULL);
1136
1137 error = -EINVAL;
1138 if (!scsi_status_is_good(res))
1139 goto out;
1140
1141 msdata = buffer + mode_data.header_length +
1142 mode_data.block_descriptor_length;
1143
1144 if (msdata - buffer > BUF_SIZE - 8)
1145 goto out;
1146
1147 error = 0;
1148
1149 rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0;
1150 rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5];
1151 rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7];
1152
1153 out:
1154 kfree(buffer);
1155 return error;
1156}
1157EXPORT_SYMBOL(sas_read_port_mode_page);
1158
1159static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
1160 "sas_end_device", NULL, NULL, NULL);
1161
1162#define sas_end_dev_show_simple(field, name, format_string, cast) \
1163static ssize_t \
1164show_sas_end_dev_##name(struct class_device *cdev, char *buf) \
1165{ \
1166 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1167 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
1168 \
1169 return snprintf(buf, 20, format_string, cast rdev->field); \
1170}
1171
1172#define sas_end_dev_simple_attr(field, name, format_string, type) \
1173 sas_end_dev_show_simple(field, name, format_string, (type)) \
1174static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
1175 show_sas_end_dev_##name, NULL)
1176
1177sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
1178sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout,
1179 "%d\n", int);
1180sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout,
1181 "%d\n", int);
1182
1183static DECLARE_TRANSPORT_CLASS(sas_expander_class,
1184 "sas_expander", NULL, NULL, NULL);
1185
1186#define sas_expander_show_simple(field, name, format_string, cast) \
1187static ssize_t \
1188show_sas_expander_##name(struct class_device *cdev, char *buf) \
1189{ \
1190 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1191 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
1192 \
1193 return snprintf(buf, 20, format_string, cast edev->field); \
1194}
1195
1196#define sas_expander_simple_attr(field, name, format_string, type) \
1197 sas_expander_show_simple(field, name, format_string, (type)) \
1198static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \
1199 show_sas_expander_##name, NULL)
1200
1201sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
1202sas_expander_simple_attr(product_id, product_id, "%s\n", char *);
1203sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *);
1204sas_expander_simple_attr(component_vendor_id, component_vendor_id,
1205 "%s\n", char *);
1206sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int);
1207sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n",
1208 unsigned int);
1209sas_expander_simple_attr(level, level, "%d\n", int);
1210
1211static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
1212 "sas_device", NULL, NULL, NULL);
1213
1214static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
1215{
1216 struct Scsi_Host *shost;
1217 struct sas_internal *i;
1218
1219 if (!scsi_is_sas_rphy(dev))
1220 return 0;
1221 shost = dev_to_shost(dev->parent->parent);
1222
1223 if (!shost->transportt)
1224 return 0;
1225 if (shost->transportt->host_attrs.ac.class !=
1226 &sas_host_class.class)
1227 return 0;
1228
1229 i = to_sas_internal(shost->transportt);
1230 return &i->rphy_attr_cont.ac == cont;
1231}
1232
1233static int sas_end_dev_match(struct attribute_container *cont,
1234 struct device *dev)
1235{
1236 struct Scsi_Host *shost;
1237 struct sas_internal *i;
1238 struct sas_rphy *rphy;
1239
1240 if (!scsi_is_sas_rphy(dev))
1241 return 0;
1242 shost = dev_to_shost(dev->parent->parent);
1243 rphy = dev_to_rphy(dev);
1244
1245 if (!shost->transportt)
1246 return 0;
1247 if (shost->transportt->host_attrs.ac.class !=
1248 &sas_host_class.class)
1249 return 0;
1250
1251 i = to_sas_internal(shost->transportt);
1252 return &i->end_dev_attr_cont.ac == cont &&
1253 rphy->identify.device_type == SAS_END_DEVICE;
1254}
1255
1256static int sas_expander_match(struct attribute_container *cont,
1257 struct device *dev)
1258{
1259 struct Scsi_Host *shost;
1260 struct sas_internal *i;
1261 struct sas_rphy *rphy;
1262
1263 if (!scsi_is_sas_rphy(dev))
1264 return 0;
1265 shost = dev_to_shost(dev->parent->parent);
1266 rphy = dev_to_rphy(dev);
1267
1268 if (!shost->transportt)
1269 return 0;
1270 if (shost->transportt->host_attrs.ac.class !=
1271 &sas_host_class.class)
1272 return 0;
1273
1274 i = to_sas_internal(shost->transportt);
1275 return &i->expander_attr_cont.ac == cont &&
1276 (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
1277 rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE);
1278}
1279
1280static void sas_expander_release(struct device *dev)
1281{
1282 struct sas_rphy *rphy = dev_to_rphy(dev);
1283 struct sas_expander_device *edev = rphy_to_expander_device(rphy);
1284
1285 put_device(dev->parent);
1286 kfree(edev);
1287}
1288
1289static void sas_end_device_release(struct device *dev)
1290{
1291 struct sas_rphy *rphy = dev_to_rphy(dev);
1292 struct sas_end_device *edev = rphy_to_end_device(rphy);
1293
1294 put_device(dev->parent);
1295 kfree(edev);
1296}
1297
1298
1299
1300
1301
1302
1303
1304
1305static void sas_rphy_initialize(struct sas_rphy *rphy)
1306{
1307 INIT_LIST_HEAD(&rphy->list);
1308}
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318struct sas_rphy *sas_end_device_alloc(struct sas_port *parent)
1319{
1320 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1321 struct sas_end_device *rdev;
1322
1323 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1324 if (!rdev) {
1325 return NULL;
1326 }
1327
1328 device_initialize(&rdev->rphy.dev);
1329 rdev->rphy.dev.parent = get_device(&parent->dev);
1330 rdev->rphy.dev.release = sas_end_device_release;
1331 if (scsi_is_sas_expander_device(parent->dev.parent)) {
1332 struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent);
1333 sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d",
1334 shost->host_no, rphy->scsi_target_id, parent->port_identifier);
1335 } else
1336 sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d",
1337 shost->host_no, parent->port_identifier);
1338 rdev->rphy.identify.device_type = SAS_END_DEVICE;
1339 sas_rphy_initialize(&rdev->rphy);
1340 transport_setup_device(&rdev->rphy.dev);
1341
1342 return &rdev->rphy;
1343}
1344EXPORT_SYMBOL(sas_end_device_alloc);
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
1355 enum sas_device_type type)
1356{
1357 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1358 struct sas_expander_device *rdev;
1359 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1360
1361 BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE &&
1362 type != SAS_FANOUT_EXPANDER_DEVICE);
1363
1364 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1365 if (!rdev) {
1366 return NULL;
1367 }
1368
1369 device_initialize(&rdev->rphy.dev);
1370 rdev->rphy.dev.parent = get_device(&parent->dev);
1371 rdev->rphy.dev.release = sas_expander_release;
1372 mutex_lock(&sas_host->lock);
1373 rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
1374 mutex_unlock(&sas_host->lock);
1375 sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d",
1376 shost->host_no, rdev->rphy.scsi_target_id);
1377 rdev->rphy.identify.device_type = type;
1378 sas_rphy_initialize(&rdev->rphy);
1379 transport_setup_device(&rdev->rphy.dev);
1380
1381 return &rdev->rphy;
1382}
1383EXPORT_SYMBOL(sas_expander_alloc);
1384
1385
1386
1387
1388
1389
1390
1391int sas_rphy_add(struct sas_rphy *rphy)
1392{
1393 struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
1394 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
1395 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1396 struct sas_identify *identify = &rphy->identify;
1397 int error;
1398
1399 if (parent->rphy)
1400 return -ENXIO;
1401 parent->rphy = rphy;
1402
1403 error = device_add(&rphy->dev);
1404 if (error)
1405 return error;
1406 transport_add_device(&rphy->dev);
1407 transport_configure_device(&rphy->dev);
1408 if (sas_bsg_initialize(shost, rphy))
1409 printk("fail to a bsg device %s\n", rphy->dev.bus_id);
1410
1411
1412 mutex_lock(&sas_host->lock);
1413 list_add_tail(&rphy->list, &sas_host->rphy_list);
1414 if (identify->device_type == SAS_END_DEVICE &&
1415 (identify->target_port_protocols &
1416 (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
1417 rphy->scsi_target_id = sas_host->next_target_id++;
1418 else if (identify->device_type == SAS_END_DEVICE)
1419 rphy->scsi_target_id = -1;
1420 mutex_unlock(&sas_host->lock);
1421
1422 if (identify->device_type == SAS_END_DEVICE &&
1423 rphy->scsi_target_id != -1) {
1424 scsi_scan_target(&rphy->dev, 0,
1425 rphy->scsi_target_id, SCAN_WILD_CARD, 0);
1426 }
1427
1428 return 0;
1429}
1430EXPORT_SYMBOL(sas_rphy_add);
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443void sas_rphy_free(struct sas_rphy *rphy)
1444{
1445 struct device *dev = &rphy->dev;
1446 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1447 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1448
1449 mutex_lock(&sas_host->lock);
1450 list_del(&rphy->list);
1451 mutex_unlock(&sas_host->lock);
1452
1453 sas_bsg_remove(shost, rphy);
1454
1455 transport_destroy_device(dev);
1456
1457 put_device(dev);
1458}
1459EXPORT_SYMBOL(sas_rphy_free);
1460
1461
1462
1463
1464
1465
1466
1467void
1468sas_rphy_delete(struct sas_rphy *rphy)
1469{
1470 sas_rphy_remove(rphy);
1471 sas_rphy_free(rphy);
1472}
1473EXPORT_SYMBOL(sas_rphy_delete);
1474
1475
1476
1477
1478
1479
1480
1481void
1482sas_rphy_remove(struct sas_rphy *rphy)
1483{
1484 struct device *dev = &rphy->dev;
1485 struct sas_port *parent = dev_to_sas_port(dev->parent);
1486
1487 switch (rphy->identify.device_type) {
1488 case SAS_END_DEVICE:
1489 scsi_remove_target(dev);
1490 break;
1491 case SAS_EDGE_EXPANDER_DEVICE:
1492 case SAS_FANOUT_EXPANDER_DEVICE:
1493 sas_remove_children(dev);
1494 break;
1495 default:
1496 break;
1497 }
1498
1499 transport_remove_device(dev);
1500 device_del(dev);
1501
1502 parent->rphy = NULL;
1503}
1504EXPORT_SYMBOL(sas_rphy_remove);
1505
1506
1507
1508
1509
1510
1511
1512
1513int scsi_is_sas_rphy(const struct device *dev)
1514{
1515 return dev->release == sas_end_device_release ||
1516 dev->release == sas_expander_release;
1517}
1518EXPORT_SYMBOL(scsi_is_sas_rphy);
1519
1520
1521
1522
1523
1524
1525static int sas_user_scan(struct Scsi_Host *shost, uint channel,
1526 uint id, uint lun)
1527{
1528 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1529 struct sas_rphy *rphy;
1530
1531 mutex_lock(&sas_host->lock);
1532 list_for_each_entry(rphy, &sas_host->rphy_list, list) {
1533 if (rphy->identify.device_type != SAS_END_DEVICE ||
1534 rphy->scsi_target_id == -1)
1535 continue;
1536
1537 if ((channel == SCAN_WILD_CARD || channel == 0) &&
1538 (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
1539 scsi_scan_target(&rphy->dev, 0,
1540 rphy->scsi_target_id, lun, 1);
1541 }
1542 }
1543 mutex_unlock(&sas_host->lock);
1544
1545 return 0;
1546}
1547
1548
1549
1550
1551
1552
1553#define SETUP_TEMPLATE(attrb, field, perm, test) \
1554 i->private_##attrb[count] = class_device_attr_##field; \
1555 i->private_##attrb[count].attr.mode = perm; \
1556 i->attrb[count] = &i->private_##attrb[count]; \
1557 if (test) \
1558 count++
1559
1560#define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \
1561 i->private_##attrb[count] = class_device_attr_##field; \
1562 i->private_##attrb[count].attr.mode = perm; \
1563 if (ro_test) { \
1564 i->private_##attrb[count].attr.mode = ro_perm; \
1565 i->private_##attrb[count].store = NULL; \
1566 } \
1567 i->attrb[count] = &i->private_##attrb[count]; \
1568 if (test) \
1569 count++
1570
1571#define SETUP_RPORT_ATTRIBUTE(field) \
1572 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
1573
1574#define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
1575 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
1576
1577#define SETUP_PHY_ATTRIBUTE(field) \
1578 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
1579
1580#define SETUP_PHY_ATTRIBUTE_RW(field) \
1581 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1582 !i->f->set_phy_speed, S_IRUGO)
1583
1584#define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \
1585 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1586 !i->f->func, S_IRUGO)
1587
1588#define SETUP_PORT_ATTRIBUTE(field) \
1589 SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
1590
1591#define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
1592 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
1593
1594#define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
1595 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1)
1596
1597#define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
1598 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func)
1599
1600#define SETUP_END_DEV_ATTRIBUTE(field) \
1601 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
1602
1603#define SETUP_EXPANDER_ATTRIBUTE(field) \
1604 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1605
1606
1607
1608
1609
1610struct scsi_transport_template *
1611sas_attach_transport(struct sas_function_template *ft)
1612{
1613 struct sas_internal *i;
1614 int count;
1615
1616 i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
1617 if (!i)
1618 return NULL;
1619
1620 i->t.user_scan = sas_user_scan;
1621
1622 i->t.host_attrs.ac.attrs = &i->host_attrs[0];
1623 i->t.host_attrs.ac.class = &sas_host_class.class;
1624 i->t.host_attrs.ac.match = sas_host_match;
1625 transport_container_register(&i->t.host_attrs);
1626 i->t.host_size = sizeof(struct sas_host_attrs);
1627
1628 i->phy_attr_cont.ac.class = &sas_phy_class.class;
1629 i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
1630 i->phy_attr_cont.ac.match = sas_phy_match;
1631 transport_container_register(&i->phy_attr_cont);
1632
1633 i->port_attr_cont.ac.class = &sas_port_class.class;
1634 i->port_attr_cont.ac.attrs = &i->port_attrs[0];
1635 i->port_attr_cont.ac.match = sas_port_match;
1636 transport_container_register(&i->port_attr_cont);
1637
1638 i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
1639 i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
1640 i->rphy_attr_cont.ac.match = sas_rphy_match;
1641 transport_container_register(&i->rphy_attr_cont);
1642
1643 i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class;
1644 i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0];
1645 i->end_dev_attr_cont.ac.match = sas_end_dev_match;
1646 transport_container_register(&i->end_dev_attr_cont);
1647
1648 i->expander_attr_cont.ac.class = &sas_expander_class.class;
1649 i->expander_attr_cont.ac.attrs = &i->expander_attrs[0];
1650 i->expander_attr_cont.ac.match = sas_expander_match;
1651 transport_container_register(&i->expander_attr_cont);
1652
1653 i->f = ft;
1654
1655 count = 0;
1656 SETUP_PORT_ATTRIBUTE(num_phys);
1657 i->host_attrs[count] = NULL;
1658
1659 count = 0;
1660 SETUP_PHY_ATTRIBUTE(initiator_port_protocols);
1661 SETUP_PHY_ATTRIBUTE(target_port_protocols);
1662 SETUP_PHY_ATTRIBUTE(device_type);
1663 SETUP_PHY_ATTRIBUTE(sas_address);
1664 SETUP_PHY_ATTRIBUTE(phy_identifier);
1665
1666 SETUP_PHY_ATTRIBUTE(negotiated_linkrate);
1667 SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw);
1668 SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate);
1669 SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw);
1670 SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate);
1671
1672 SETUP_PHY_ATTRIBUTE(invalid_dword_count);
1673 SETUP_PHY_ATTRIBUTE(running_disparity_error_count);
1674 SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count);
1675 SETUP_PHY_ATTRIBUTE(phy_reset_problem_count);
1676 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset);
1677 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
1678 SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable);
1679 i->phy_attrs[count] = NULL;
1680
1681 count = 0;
1682 SETUP_PORT_ATTRIBUTE(num_phys);
1683 i->port_attrs[count] = NULL;
1684
1685 count = 0;
1686 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
1687 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
1688 SETUP_RPORT_ATTRIBUTE(rphy_device_type);
1689 SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
1690 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
1691 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
1692 get_enclosure_identifier);
1693 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
1694 get_bay_identifier);
1695 i->rphy_attrs[count] = NULL;
1696
1697 count = 0;
1698 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning);
1699 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout);
1700 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout);
1701 i->end_dev_attrs[count] = NULL;
1702
1703 count = 0;
1704 SETUP_EXPANDER_ATTRIBUTE(vendor_id);
1705 SETUP_EXPANDER_ATTRIBUTE(product_id);
1706 SETUP_EXPANDER_ATTRIBUTE(product_rev);
1707 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id);
1708 SETUP_EXPANDER_ATTRIBUTE(component_id);
1709 SETUP_EXPANDER_ATTRIBUTE(component_revision_id);
1710 SETUP_EXPANDER_ATTRIBUTE(level);
1711 i->expander_attrs[count] = NULL;
1712
1713 return &i->t;
1714}
1715EXPORT_SYMBOL(sas_attach_transport);
1716
1717
1718
1719
1720
1721void sas_release_transport(struct scsi_transport_template *t)
1722{
1723 struct sas_internal *i = to_sas_internal(t);
1724
1725 transport_container_unregister(&i->t.host_attrs);
1726 transport_container_unregister(&i->phy_attr_cont);
1727 transport_container_unregister(&i->port_attr_cont);
1728 transport_container_unregister(&i->rphy_attr_cont);
1729 transport_container_unregister(&i->end_dev_attr_cont);
1730 transport_container_unregister(&i->expander_attr_cont);
1731
1732 kfree(i);
1733}
1734EXPORT_SYMBOL(sas_release_transport);
1735
1736static __init int sas_transport_init(void)
1737{
1738 int error;
1739
1740 error = transport_class_register(&sas_host_class);
1741 if (error)
1742 goto out;
1743 error = transport_class_register(&sas_phy_class);
1744 if (error)
1745 goto out_unregister_transport;
1746 error = transport_class_register(&sas_port_class);
1747 if (error)
1748 goto out_unregister_phy;
1749 error = transport_class_register(&sas_rphy_class);
1750 if (error)
1751 goto out_unregister_port;
1752 error = transport_class_register(&sas_end_dev_class);
1753 if (error)
1754 goto out_unregister_rphy;
1755 error = transport_class_register(&sas_expander_class);
1756 if (error)
1757 goto out_unregister_end_dev;
1758
1759 return 0;
1760
1761 out_unregister_end_dev:
1762 transport_class_unregister(&sas_end_dev_class);
1763 out_unregister_rphy:
1764 transport_class_unregister(&sas_rphy_class);
1765 out_unregister_port:
1766 transport_class_unregister(&sas_port_class);
1767 out_unregister_phy:
1768 transport_class_unregister(&sas_phy_class);
1769 out_unregister_transport:
1770 transport_class_unregister(&sas_host_class);
1771 out:
1772 return error;
1773
1774}
1775
1776static void __exit sas_transport_exit(void)
1777{
1778 transport_class_unregister(&sas_host_class);
1779 transport_class_unregister(&sas_phy_class);
1780 transport_class_unregister(&sas_port_class);
1781 transport_class_unregister(&sas_rphy_class);
1782 transport_class_unregister(&sas_end_dev_class);
1783 transport_class_unregister(&sas_expander_class);
1784}
1785
1786MODULE_AUTHOR("Christoph Hellwig");
1787MODULE_DESCRIPTION("SAS Transport Attributes");
1788MODULE_LICENSE("GPL");
1789
1790module_init(sas_transport_init);
1791module_exit(sas_transport_exit);
1792
