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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_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
57 struct device_attribute dev_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 = blk_fetch_request(q);
167 if (!req)
168 break;
169
170 spin_unlock_irq(q->queue_lock);
171
172 handler = to_sas_internal(shost->transportt)->f->smp_handler;
173 ret = handler(shost, rphy, req);
174 req->errors = ret;
175
176 blk_end_request_all(req, ret);
177
178 spin_lock_irq(q->queue_lock);
179 }
180}
181
182static void sas_host_smp_request(struct request_queue *q)
183{
184 sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL);
185}
186
187static void sas_non_host_smp_request(struct request_queue *q)
188{
189 struct sas_rphy *rphy = q->queuedata;
190 sas_smp_request(q, rphy_to_shost(rphy), rphy);
191}
192
193static void sas_host_release(struct device *dev)
194{
195 struct Scsi_Host *shost = dev_to_shost(dev);
196 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
197 struct request_queue *q = sas_host->q;
198
199 if (q)
200 blk_cleanup_queue(q);
201}
202
203static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
204{
205 struct request_queue *q;
206 int error;
207 struct device *dev;
208 char namebuf[20];
209 const char *name;
210 void (*release)(struct device *);
211
212 if (!to_sas_internal(shost->transportt)->f->smp_handler) {
213 printk("%s can't handle SMP requests\n", shost->hostt->name);
214 return 0;
215 }
216
217 if (rphy) {
218 q = blk_init_queue(sas_non_host_smp_request, NULL);
219 dev = &rphy->dev;
220 name = dev_name(dev);
221 release = NULL;
222 } else {
223 q = blk_init_queue(sas_host_smp_request, NULL);
224 dev = &shost->shost_gendev;
225 snprintf(namebuf, sizeof(namebuf),
226 "sas_host%d", shost->host_no);
227 name = namebuf;
228 release = sas_host_release;
229 }
230 if (!q)
231 return -ENOMEM;
232
233 error = bsg_register_queue(q, dev, name, release);
234 if (error) {
235 blk_cleanup_queue(q);
236 return -ENOMEM;
237 }
238
239 if (rphy)
240 rphy->q = q;
241 else
242 to_sas_host_attrs(shost)->q = q;
243
244 if (rphy)
245 q->queuedata = rphy;
246 else
247 q->queuedata = shost;
248
249 queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q);
250 return 0;
251}
252
253static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy)
254{
255 struct request_queue *q;
256
257 if (rphy)
258 q = rphy->q;
259 else
260 q = to_sas_host_attrs(shost)->q;
261
262 if (!q)
263 return;
264
265 bsg_unregister_queue(q);
266}
267
268
269
270
271
272static int sas_host_setup(struct transport_container *tc, struct device *dev,
273 struct device *cdev)
274{
275 struct Scsi_Host *shost = dev_to_shost(dev);
276 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
277
278 INIT_LIST_HEAD(&sas_host->rphy_list);
279 mutex_init(&sas_host->lock);
280 sas_host->next_target_id = 0;
281 sas_host->next_expander_id = 0;
282 sas_host->next_port_id = 0;
283
284 if (sas_bsg_initialize(shost, NULL))
285 dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n",
286 shost->host_no);
287
288 return 0;
289}
290
291static int sas_host_remove(struct transport_container *tc, struct device *dev,
292 struct device *cdev)
293{
294 struct Scsi_Host *shost = dev_to_shost(dev);
295
296 sas_bsg_remove(shost, NULL);
297
298 return 0;
299}
300
301static DECLARE_TRANSPORT_CLASS(sas_host_class,
302 "sas_host", sas_host_setup, sas_host_remove, NULL);
303
304static int sas_host_match(struct attribute_container *cont,
305 struct device *dev)
306{
307 struct Scsi_Host *shost;
308 struct sas_internal *i;
309
310 if (!scsi_is_host_device(dev))
311 return 0;
312 shost = dev_to_shost(dev);
313
314 if (!shost->transportt)
315 return 0;
316 if (shost->transportt->host_attrs.ac.class !=
317 &sas_host_class.class)
318 return 0;
319
320 i = to_sas_internal(shost->transportt);
321 return &i->t.host_attrs.ac == cont;
322}
323
324static int do_sas_phy_delete(struct device *dev, void *data)
325{
326 int pass = (int)(unsigned long)data;
327
328 if (pass == 0 && scsi_is_sas_port(dev))
329 sas_port_delete(dev_to_sas_port(dev));
330 else if (pass == 1 && scsi_is_sas_phy(dev))
331 sas_phy_delete(dev_to_phy(dev));
332 return 0;
333}
334
335
336
337
338
339
340
341void sas_remove_children(struct device *dev)
342{
343 device_for_each_child(dev, (void *)0, do_sas_phy_delete);
344 device_for_each_child(dev, (void *)1, do_sas_phy_delete);
345}
346EXPORT_SYMBOL(sas_remove_children);
347
348
349
350
351
352
353
354
355void sas_remove_host(struct Scsi_Host *shost)
356{
357 sas_remove_children(&shost->shost_gendev);
358}
359EXPORT_SYMBOL(sas_remove_host);
360
361
362
363
364
365
366#define sas_phy_show_simple(field, name, format_string, cast) \
367static ssize_t \
368show_sas_phy_##name(struct device *dev, \
369 struct device_attribute *attr, char *buf) \
370{ \
371 struct sas_phy *phy = transport_class_to_phy(dev); \
372 \
373 return snprintf(buf, 20, format_string, cast phy->field); \
374}
375
376#define sas_phy_simple_attr(field, name, format_string, type) \
377 sas_phy_show_simple(field, name, format_string, (type)) \
378static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
379
380#define sas_phy_show_protocol(field, name) \
381static ssize_t \
382show_sas_phy_##name(struct device *dev, \
383 struct device_attribute *attr, char *buf) \
384{ \
385 struct sas_phy *phy = transport_class_to_phy(dev); \
386 \
387 if (!phy->field) \
388 return snprintf(buf, 20, "none\n"); \
389 return get_sas_protocol_names(phy->field, buf); \
390}
391
392#define sas_phy_protocol_attr(field, name) \
393 sas_phy_show_protocol(field, name) \
394static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
395
396#define sas_phy_show_linkspeed(field) \
397static ssize_t \
398show_sas_phy_##field(struct device *dev, \
399 struct device_attribute *attr, char *buf) \
400{ \
401 struct sas_phy *phy = transport_class_to_phy(dev); \
402 \
403 return get_sas_linkspeed_names(phy->field, buf); \
404}
405
406
407#define sas_phy_store_linkspeed(field) \
408static ssize_t \
409store_sas_phy_##field(struct device *dev, \
410 struct device_attribute *attr, \
411 const char *buf, size_t count) \
412{ \
413 struct sas_phy *phy = transport_class_to_phy(dev); \
414 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
415 struct sas_internal *i = to_sas_internal(shost->transportt); \
416 u32 value; \
417 struct sas_phy_linkrates rates = {0}; \
418 int error; \
419 \
420 error = set_sas_linkspeed_names(&value, buf); \
421 if (error) \
422 return error; \
423 rates.field = value; \
424 error = i->f->set_phy_speed(phy, &rates); \
425 \
426 return error ? error : count; \
427}
428
429#define sas_phy_linkspeed_rw_attr(field) \
430 sas_phy_show_linkspeed(field) \
431 sas_phy_store_linkspeed(field) \
432static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \
433 store_sas_phy_##field)
434
435#define sas_phy_linkspeed_attr(field) \
436 sas_phy_show_linkspeed(field) \
437static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
438
439
440#define sas_phy_show_linkerror(field) \
441static ssize_t \
442show_sas_phy_##field(struct device *dev, \
443 struct device_attribute *attr, char *buf) \
444{ \
445 struct sas_phy *phy = transport_class_to_phy(dev); \
446 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
447 struct sas_internal *i = to_sas_internal(shost->transportt); \
448 int error; \
449 \
450 error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
451 if (error) \
452 return error; \
453 return snprintf(buf, 20, "%u\n", phy->field); \
454}
455
456#define sas_phy_linkerror_attr(field) \
457 sas_phy_show_linkerror(field) \
458static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
459
460
461static ssize_t
462show_sas_device_type(struct device *dev,
463 struct device_attribute *attr, char *buf)
464{
465 struct sas_phy *phy = transport_class_to_phy(dev);
466
467 if (!phy->identify.device_type)
468 return snprintf(buf, 20, "none\n");
469 return get_sas_device_type_names(phy->identify.device_type, buf);
470}
471static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
472
473static ssize_t do_sas_phy_enable(struct device *dev,
474 size_t count, int enable)
475{
476 struct sas_phy *phy = transport_class_to_phy(dev);
477 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
478 struct sas_internal *i = to_sas_internal(shost->transportt);
479 int error;
480
481 error = i->f->phy_enable(phy, enable);
482 if (error)
483 return error;
484 phy->enabled = enable;
485 return count;
486};
487
488static ssize_t
489store_sas_phy_enable(struct device *dev, struct device_attribute *attr,
490 const char *buf, size_t count)
491{
492 if (count < 1)
493 return -EINVAL;
494
495 switch (buf[0]) {
496 case '0':
497 do_sas_phy_enable(dev, count, 0);
498 break;
499 case '1':
500 do_sas_phy_enable(dev, count, 1);
501 break;
502 default:
503 return -EINVAL;
504 }
505
506 return count;
507}
508
509static ssize_t
510show_sas_phy_enable(struct device *dev, struct device_attribute *attr,
511 char *buf)
512{
513 struct sas_phy *phy = transport_class_to_phy(dev);
514
515 return snprintf(buf, 20, "%d", phy->enabled);
516}
517
518static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable,
519 store_sas_phy_enable);
520
521static ssize_t
522do_sas_phy_reset(struct device *dev, size_t count, int hard_reset)
523{
524 struct sas_phy *phy = transport_class_to_phy(dev);
525 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
526 struct sas_internal *i = to_sas_internal(shost->transportt);
527 int error;
528
529 error = i->f->phy_reset(phy, hard_reset);
530 if (error)
531 return error;
532 return count;
533};
534
535static ssize_t
536store_sas_link_reset(struct device *dev, struct device_attribute *attr,
537 const char *buf, size_t count)
538{
539 return do_sas_phy_reset(dev, count, 0);
540}
541static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
542
543static ssize_t
544store_sas_hard_reset(struct device *dev, struct device_attribute *attr,
545 const char *buf, size_t count)
546{
547 return do_sas_phy_reset(dev, count, 1);
548}
549static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
550
551sas_phy_protocol_attr(identify.initiator_port_protocols,
552 initiator_port_protocols);
553sas_phy_protocol_attr(identify.target_port_protocols,
554 target_port_protocols);
555sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
556 unsigned long long);
557sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
558
559sas_phy_linkspeed_attr(negotiated_linkrate);
560sas_phy_linkspeed_attr(minimum_linkrate_hw);
561sas_phy_linkspeed_rw_attr(minimum_linkrate);
562sas_phy_linkspeed_attr(maximum_linkrate_hw);
563sas_phy_linkspeed_rw_attr(maximum_linkrate);
564sas_phy_linkerror_attr(invalid_dword_count);
565sas_phy_linkerror_attr(running_disparity_error_count);
566sas_phy_linkerror_attr(loss_of_dword_sync_count);
567sas_phy_linkerror_attr(phy_reset_problem_count);
568
569
570static DECLARE_TRANSPORT_CLASS(sas_phy_class,
571 "sas_phy", NULL, NULL, NULL);
572
573static int sas_phy_match(struct attribute_container *cont, struct device *dev)
574{
575 struct Scsi_Host *shost;
576 struct sas_internal *i;
577
578 if (!scsi_is_sas_phy(dev))
579 return 0;
580 shost = dev_to_shost(dev->parent);
581
582 if (!shost->transportt)
583 return 0;
584 if (shost->transportt->host_attrs.ac.class !=
585 &sas_host_class.class)
586 return 0;
587
588 i = to_sas_internal(shost->transportt);
589 return &i->phy_attr_cont.ac == cont;
590}
591
592static void sas_phy_release(struct device *dev)
593{
594 struct sas_phy *phy = dev_to_phy(dev);
595
596 put_device(dev->parent);
597 kfree(phy);
598}
599
600
601
602
603
604
605
606
607
608
609
610
611
612struct sas_phy *sas_phy_alloc(struct device *parent, int number)
613{
614 struct Scsi_Host *shost = dev_to_shost(parent);
615 struct sas_phy *phy;
616
617 phy = kzalloc(sizeof(*phy), GFP_KERNEL);
618 if (!phy)
619 return NULL;
620
621 phy->number = number;
622 phy->enabled = 1;
623
624 device_initialize(&phy->dev);
625 phy->dev.parent = get_device(parent);
626 phy->dev.release = sas_phy_release;
627 INIT_LIST_HEAD(&phy->port_siblings);
628 if (scsi_is_sas_expander_device(parent)) {
629 struct sas_rphy *rphy = dev_to_rphy(parent);
630 dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no,
631 rphy->scsi_target_id, number);
632 } else
633 dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number);
634
635 transport_setup_device(&phy->dev);
636
637 return phy;
638}
639EXPORT_SYMBOL(sas_phy_alloc);
640
641
642
643
644
645
646
647int sas_phy_add(struct sas_phy *phy)
648{
649 int error;
650
651 error = device_add(&phy->dev);
652 if (!error) {
653 transport_add_device(&phy->dev);
654 transport_configure_device(&phy->dev);
655 }
656
657 return error;
658}
659EXPORT_SYMBOL(sas_phy_add);
660
661
662
663
664
665
666
667
668
669
670
671void sas_phy_free(struct sas_phy *phy)
672{
673 transport_destroy_device(&phy->dev);
674 put_device(&phy->dev);
675}
676EXPORT_SYMBOL(sas_phy_free);
677
678
679
680
681
682
683
684
685void
686sas_phy_delete(struct sas_phy *phy)
687{
688 struct device *dev = &phy->dev;
689
690
691 BUG_ON(!list_empty(&phy->port_siblings));
692
693 transport_remove_device(dev);
694 device_del(dev);
695 transport_destroy_device(dev);
696 put_device(dev);
697}
698EXPORT_SYMBOL(sas_phy_delete);
699
700
701
702
703
704
705
706
707int scsi_is_sas_phy(const struct device *dev)
708{
709 return dev->release == sas_phy_release;
710}
711EXPORT_SYMBOL(scsi_is_sas_phy);
712
713
714
715
716#define sas_port_show_simple(field, name, format_string, cast) \
717static ssize_t \
718show_sas_port_##name(struct device *dev, \
719 struct device_attribute *attr, char *buf) \
720{ \
721 struct sas_port *port = transport_class_to_sas_port(dev); \
722 \
723 return snprintf(buf, 20, format_string, cast port->field); \
724}
725
726#define sas_port_simple_attr(field, name, format_string, type) \
727 sas_port_show_simple(field, name, format_string, (type)) \
728static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
729
730sas_port_simple_attr(num_phys, num_phys, "%d\n", int);
731
732static DECLARE_TRANSPORT_CLASS(sas_port_class,
733 "sas_port", NULL, NULL, NULL);
734
735static int sas_port_match(struct attribute_container *cont, struct device *dev)
736{
737 struct Scsi_Host *shost;
738 struct sas_internal *i;
739
740 if (!scsi_is_sas_port(dev))
741 return 0;
742 shost = dev_to_shost(dev->parent);
743
744 if (!shost->transportt)
745 return 0;
746 if (shost->transportt->host_attrs.ac.class !=
747 &sas_host_class.class)
748 return 0;
749
750 i = to_sas_internal(shost->transportt);
751 return &i->port_attr_cont.ac == cont;
752}
753
754
755static void sas_port_release(struct device *dev)
756{
757 struct sas_port *port = dev_to_sas_port(dev);
758
759 BUG_ON(!list_empty(&port->phy_list));
760
761 put_device(dev->parent);
762 kfree(port);
763}
764
765static void sas_port_create_link(struct sas_port *port,
766 struct sas_phy *phy)
767{
768 int res;
769
770 res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj,
771 dev_name(&phy->dev));
772 if (res)
773 goto err;
774 res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port");
775 if (res)
776 goto err;
777 return;
778err:
779 printk(KERN_ERR "%s: Cannot create port links, err=%d\n",
780 __func__, res);
781}
782
783static void sas_port_delete_link(struct sas_port *port,
784 struct sas_phy *phy)
785{
786 sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev));
787 sysfs_remove_link(&phy->dev.kobj, "port");
788}
789
790
791
792
793
794
795
796
797
798
799
800
801struct sas_port *sas_port_alloc(struct device *parent, int port_id)
802{
803 struct Scsi_Host *shost = dev_to_shost(parent);
804 struct sas_port *port;
805
806 port = kzalloc(sizeof(*port), GFP_KERNEL);
807 if (!port)
808 return NULL;
809
810 port->port_identifier = port_id;
811
812 device_initialize(&port->dev);
813
814 port->dev.parent = get_device(parent);
815 port->dev.release = sas_port_release;
816
817 mutex_init(&port->phy_list_mutex);
818 INIT_LIST_HEAD(&port->phy_list);
819
820 if (scsi_is_sas_expander_device(parent)) {
821 struct sas_rphy *rphy = dev_to_rphy(parent);
822 dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no,
823 rphy->scsi_target_id, port->port_identifier);
824 } else
825 dev_set_name(&port->dev, "port-%d:%d", shost->host_no,
826 port->port_identifier);
827
828 transport_setup_device(&port->dev);
829
830 return port;
831}
832EXPORT_SYMBOL(sas_port_alloc);
833
834
835
836
837
838
839
840
841
842
843
844
845
846struct sas_port *sas_port_alloc_num(struct device *parent)
847{
848 int index;
849 struct Scsi_Host *shost = dev_to_shost(parent);
850 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
851
852
853 mutex_lock(&sas_host->lock);
854 if (scsi_is_sas_expander_device(parent)) {
855 struct sas_rphy *rphy = dev_to_rphy(parent);
856 struct sas_expander_device *exp = rphy_to_expander_device(rphy);
857
858 index = exp->next_port_id++;
859 } else
860 index = sas_host->next_port_id++;
861 mutex_unlock(&sas_host->lock);
862 return sas_port_alloc(parent, index);
863}
864EXPORT_SYMBOL(sas_port_alloc_num);
865
866
867
868
869
870
871
872int sas_port_add(struct sas_port *port)
873{
874 int error;
875
876
877 BUG_ON(!list_empty(&port->phy_list));
878
879 error = device_add(&port->dev);
880
881 if (error)
882 return error;
883
884 transport_add_device(&port->dev);
885 transport_configure_device(&port->dev);
886
887 return 0;
888}
889EXPORT_SYMBOL(sas_port_add);
890
891
892
893
894
895
896
897
898
899
900
901void sas_port_free(struct sas_port *port)
902{
903 transport_destroy_device(&port->dev);
904 put_device(&port->dev);
905}
906EXPORT_SYMBOL(sas_port_free);
907
908
909
910
911
912
913
914
915void sas_port_delete(struct sas_port *port)
916{
917 struct device *dev = &port->dev;
918 struct sas_phy *phy, *tmp_phy;
919
920 if (port->rphy) {
921 sas_rphy_delete(port->rphy);
922 port->rphy = NULL;
923 }
924
925 mutex_lock(&port->phy_list_mutex);
926 list_for_each_entry_safe(phy, tmp_phy, &port->phy_list,
927 port_siblings) {
928 sas_port_delete_link(port, phy);
929 list_del_init(&phy->port_siblings);
930 }
931 mutex_unlock(&port->phy_list_mutex);
932
933 if (port->is_backlink) {
934 struct device *parent = port->dev.parent;
935
936 sysfs_remove_link(&port->dev.kobj, dev_name(parent));
937 port->is_backlink = 0;
938 }
939
940 transport_remove_device(dev);
941 device_del(dev);
942 transport_destroy_device(dev);
943 put_device(dev);
944}
945EXPORT_SYMBOL(sas_port_delete);
946
947
948
949
950
951
952
953
954int scsi_is_sas_port(const struct device *dev)
955{
956 return dev->release == sas_port_release;
957}
958EXPORT_SYMBOL(scsi_is_sas_port);
959
960
961
962
963
964
965
966
967
968
969
970
971
972void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy)
973{
974 mutex_lock(&port->phy_list_mutex);
975 if (unlikely(!list_empty(&phy->port_siblings))) {
976
977 struct sas_phy *tmp;
978
979 list_for_each_entry(tmp, &port->phy_list, port_siblings)
980 if (tmp == phy)
981 break;
982
983
984 if (unlikely(tmp != phy)) {
985 dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n",
986 dev_name(&phy->dev));
987 BUG();
988 }
989 } else {
990 sas_port_create_link(port, phy);
991 list_add_tail(&phy->port_siblings, &port->phy_list);
992 port->num_phys++;
993 }
994 mutex_unlock(&port->phy_list_mutex);
995}
996EXPORT_SYMBOL(sas_port_add_phy);
997
998
999
1000
1001
1002
1003
1004
1005
1006void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy)
1007{
1008 mutex_lock(&port->phy_list_mutex);
1009 sas_port_delete_link(port, phy);
1010 list_del_init(&phy->port_siblings);
1011 port->num_phys--;
1012 mutex_unlock(&port->phy_list_mutex);
1013}
1014EXPORT_SYMBOL(sas_port_delete_phy);
1015
1016void sas_port_mark_backlink(struct sas_port *port)
1017{
1018 int res;
1019 struct device *parent = port->dev.parent->parent->parent;
1020
1021 if (port->is_backlink)
1022 return;
1023 port->is_backlink = 1;
1024 res = sysfs_create_link(&port->dev.kobj, &parent->kobj,
1025 dev_name(parent));
1026 if (res)
1027 goto err;
1028 return;
1029err:
1030 printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n",
1031 __func__, res);
1032
1033}
1034EXPORT_SYMBOL(sas_port_mark_backlink);
1035
1036
1037
1038
1039
1040#define sas_rphy_show_simple(field, name, format_string, cast) \
1041static ssize_t \
1042show_sas_rphy_##name(struct device *dev, \
1043 struct device_attribute *attr, char *buf) \
1044{ \
1045 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1046 \
1047 return snprintf(buf, 20, format_string, cast rphy->field); \
1048}
1049
1050#define sas_rphy_simple_attr(field, name, format_string, type) \
1051 sas_rphy_show_simple(field, name, format_string, (type)) \
1052static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1053 show_sas_rphy_##name, NULL)
1054
1055#define sas_rphy_show_protocol(field, name) \
1056static ssize_t \
1057show_sas_rphy_##name(struct device *dev, \
1058 struct device_attribute *attr, char *buf) \
1059{ \
1060 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1061 \
1062 if (!rphy->field) \
1063 return snprintf(buf, 20, "none\n"); \
1064 return get_sas_protocol_names(rphy->field, buf); \
1065}
1066
1067#define sas_rphy_protocol_attr(field, name) \
1068 sas_rphy_show_protocol(field, name) \
1069static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1070 show_sas_rphy_##name, NULL)
1071
1072static ssize_t
1073show_sas_rphy_device_type(struct device *dev,
1074 struct device_attribute *attr, char *buf)
1075{
1076 struct sas_rphy *rphy = transport_class_to_rphy(dev);
1077
1078 if (!rphy->identify.device_type)
1079 return snprintf(buf, 20, "none\n");
1080 return get_sas_device_type_names(
1081 rphy->identify.device_type, buf);
1082}
1083
1084static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
1085 show_sas_rphy_device_type, NULL);
1086
1087static ssize_t
1088show_sas_rphy_enclosure_identifier(struct device *dev,
1089 struct device_attribute *attr, char *buf)
1090{
1091 struct sas_rphy *rphy = transport_class_to_rphy(dev);
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 u64 identifier;
1096 int error;
1097
1098
1099
1100
1101
1102 if (scsi_is_sas_phy_local(phy))
1103 return -EINVAL;
1104
1105 error = i->f->get_enclosure_identifier(rphy, &identifier);
1106 if (error)
1107 return error;
1108 return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
1109}
1110
1111static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
1112 show_sas_rphy_enclosure_identifier, NULL);
1113
1114static ssize_t
1115show_sas_rphy_bay_identifier(struct device *dev,
1116 struct device_attribute *attr, char *buf)
1117{
1118 struct sas_rphy *rphy = transport_class_to_rphy(dev);
1119 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1120 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1121 struct sas_internal *i = to_sas_internal(shost->transportt);
1122 int val;
1123
1124 if (scsi_is_sas_phy_local(phy))
1125 return -EINVAL;
1126
1127 val = i->f->get_bay_identifier(rphy);
1128 if (val < 0)
1129 return val;
1130 return sprintf(buf, "%d\n", val);
1131}
1132
1133static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
1134 show_sas_rphy_bay_identifier, NULL);
1135
1136sas_rphy_protocol_attr(identify.initiator_port_protocols,
1137 initiator_port_protocols);
1138sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
1139sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
1140 unsigned long long);
1141sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
1142
1143
1144#define BUF_SIZE 64
1145
1146int sas_read_port_mode_page(struct scsi_device *sdev)
1147{
1148 char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
1149 struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target);
1150 struct sas_end_device *rdev;
1151 struct scsi_mode_data mode_data;
1152 int res, error;
1153
1154 BUG_ON(rphy->identify.device_type != SAS_END_DEVICE);
1155
1156 rdev = rphy_to_end_device(rphy);
1157
1158 if (!buffer)
1159 return -ENOMEM;
1160
1161 res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
1162 &mode_data, NULL);
1163
1164 error = -EINVAL;
1165 if (!scsi_status_is_good(res))
1166 goto out;
1167
1168 msdata = buffer + mode_data.header_length +
1169 mode_data.block_descriptor_length;
1170
1171 if (msdata - buffer > BUF_SIZE - 8)
1172 goto out;
1173
1174 error = 0;
1175
1176 rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0;
1177 rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5];
1178 rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7];
1179
1180 out:
1181 kfree(buffer);
1182 return error;
1183}
1184EXPORT_SYMBOL(sas_read_port_mode_page);
1185
1186static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
1187 "sas_end_device", NULL, NULL, NULL);
1188
1189#define sas_end_dev_show_simple(field, name, format_string, cast) \
1190static ssize_t \
1191show_sas_end_dev_##name(struct device *dev, \
1192 struct device_attribute *attr, char *buf) \
1193{ \
1194 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1195 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
1196 \
1197 return snprintf(buf, 20, format_string, cast rdev->field); \
1198}
1199
1200#define sas_end_dev_simple_attr(field, name, format_string, type) \
1201 sas_end_dev_show_simple(field, name, format_string, (type)) \
1202static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
1203 show_sas_end_dev_##name, NULL)
1204
1205sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
1206sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout,
1207 "%d\n", int);
1208sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout,
1209 "%d\n", int);
1210
1211static DECLARE_TRANSPORT_CLASS(sas_expander_class,
1212 "sas_expander", NULL, NULL, NULL);
1213
1214#define sas_expander_show_simple(field, name, format_string, cast) \
1215static ssize_t \
1216show_sas_expander_##name(struct device *dev, \
1217 struct device_attribute *attr, char *buf) \
1218{ \
1219 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
1220 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
1221 \
1222 return snprintf(buf, 20, format_string, cast edev->field); \
1223}
1224
1225#define sas_expander_simple_attr(field, name, format_string, type) \
1226 sas_expander_show_simple(field, name, format_string, (type)) \
1227static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \
1228 show_sas_expander_##name, NULL)
1229
1230sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
1231sas_expander_simple_attr(product_id, product_id, "%s\n", char *);
1232sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *);
1233sas_expander_simple_attr(component_vendor_id, component_vendor_id,
1234 "%s\n", char *);
1235sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int);
1236sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n",
1237 unsigned int);
1238sas_expander_simple_attr(level, level, "%d\n", int);
1239
1240static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
1241 "sas_device", NULL, NULL, NULL);
1242
1243static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
1244{
1245 struct Scsi_Host *shost;
1246 struct sas_internal *i;
1247
1248 if (!scsi_is_sas_rphy(dev))
1249 return 0;
1250 shost = dev_to_shost(dev->parent->parent);
1251
1252 if (!shost->transportt)
1253 return 0;
1254 if (shost->transportt->host_attrs.ac.class !=
1255 &sas_host_class.class)
1256 return 0;
1257
1258 i = to_sas_internal(shost->transportt);
1259 return &i->rphy_attr_cont.ac == cont;
1260}
1261
1262static int sas_end_dev_match(struct attribute_container *cont,
1263 struct device *dev)
1264{
1265 struct Scsi_Host *shost;
1266 struct sas_internal *i;
1267 struct sas_rphy *rphy;
1268
1269 if (!scsi_is_sas_rphy(dev))
1270 return 0;
1271 shost = dev_to_shost(dev->parent->parent);
1272 rphy = dev_to_rphy(dev);
1273
1274 if (!shost->transportt)
1275 return 0;
1276 if (shost->transportt->host_attrs.ac.class !=
1277 &sas_host_class.class)
1278 return 0;
1279
1280 i = to_sas_internal(shost->transportt);
1281 return &i->end_dev_attr_cont.ac == cont &&
1282 rphy->identify.device_type == SAS_END_DEVICE;
1283}
1284
1285static int sas_expander_match(struct attribute_container *cont,
1286 struct device *dev)
1287{
1288 struct Scsi_Host *shost;
1289 struct sas_internal *i;
1290 struct sas_rphy *rphy;
1291
1292 if (!scsi_is_sas_rphy(dev))
1293 return 0;
1294 shost = dev_to_shost(dev->parent->parent);
1295 rphy = dev_to_rphy(dev);
1296
1297 if (!shost->transportt)
1298 return 0;
1299 if (shost->transportt->host_attrs.ac.class !=
1300 &sas_host_class.class)
1301 return 0;
1302
1303 i = to_sas_internal(shost->transportt);
1304 return &i->expander_attr_cont.ac == cont &&
1305 (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
1306 rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE);
1307}
1308
1309static void sas_expander_release(struct device *dev)
1310{
1311 struct sas_rphy *rphy = dev_to_rphy(dev);
1312 struct sas_expander_device *edev = rphy_to_expander_device(rphy);
1313
1314 if (rphy->q)
1315 blk_cleanup_queue(rphy->q);
1316
1317 put_device(dev->parent);
1318 kfree(edev);
1319}
1320
1321static void sas_end_device_release(struct device *dev)
1322{
1323 struct sas_rphy *rphy = dev_to_rphy(dev);
1324 struct sas_end_device *edev = rphy_to_end_device(rphy);
1325
1326 if (rphy->q)
1327 blk_cleanup_queue(rphy->q);
1328
1329 put_device(dev->parent);
1330 kfree(edev);
1331}
1332
1333
1334
1335
1336
1337
1338
1339
1340static void sas_rphy_initialize(struct sas_rphy *rphy)
1341{
1342 INIT_LIST_HEAD(&rphy->list);
1343}
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354struct sas_rphy *sas_end_device_alloc(struct sas_port *parent)
1355{
1356 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1357 struct sas_end_device *rdev;
1358
1359 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1360 if (!rdev) {
1361 return NULL;
1362 }
1363
1364 device_initialize(&rdev->rphy.dev);
1365 rdev->rphy.dev.parent = get_device(&parent->dev);
1366 rdev->rphy.dev.release = sas_end_device_release;
1367 if (scsi_is_sas_expander_device(parent->dev.parent)) {
1368 struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent);
1369 dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d",
1370 shost->host_no, rphy->scsi_target_id,
1371 parent->port_identifier);
1372 } else
1373 dev_set_name(&rdev->rphy.dev, "end_device-%d:%d",
1374 shost->host_no, parent->port_identifier);
1375 rdev->rphy.identify.device_type = SAS_END_DEVICE;
1376 sas_rphy_initialize(&rdev->rphy);
1377 transport_setup_device(&rdev->rphy.dev);
1378
1379 return &rdev->rphy;
1380}
1381EXPORT_SYMBOL(sas_end_device_alloc);
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
1394 enum sas_device_type type)
1395{
1396 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1397 struct sas_expander_device *rdev;
1398 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1399
1400 BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE &&
1401 type != SAS_FANOUT_EXPANDER_DEVICE);
1402
1403 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1404 if (!rdev) {
1405 return NULL;
1406 }
1407
1408 device_initialize(&rdev->rphy.dev);
1409 rdev->rphy.dev.parent = get_device(&parent->dev);
1410 rdev->rphy.dev.release = sas_expander_release;
1411 mutex_lock(&sas_host->lock);
1412 rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
1413 mutex_unlock(&sas_host->lock);
1414 dev_set_name(&rdev->rphy.dev, "expander-%d:%d",
1415 shost->host_no, rdev->rphy.scsi_target_id);
1416 rdev->rphy.identify.device_type = type;
1417 sas_rphy_initialize(&rdev->rphy);
1418 transport_setup_device(&rdev->rphy.dev);
1419
1420 return &rdev->rphy;
1421}
1422EXPORT_SYMBOL(sas_expander_alloc);
1423
1424
1425
1426
1427
1428
1429
1430int sas_rphy_add(struct sas_rphy *rphy)
1431{
1432 struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
1433 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
1434 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1435 struct sas_identify *identify = &rphy->identify;
1436 int error;
1437
1438 if (parent->rphy)
1439 return -ENXIO;
1440 parent->rphy = rphy;
1441
1442 error = device_add(&rphy->dev);
1443 if (error)
1444 return error;
1445 transport_add_device(&rphy->dev);
1446 transport_configure_device(&rphy->dev);
1447 if (sas_bsg_initialize(shost, rphy))
1448 printk("fail to a bsg device %s\n", dev_name(&rphy->dev));
1449
1450
1451 mutex_lock(&sas_host->lock);
1452 list_add_tail(&rphy->list, &sas_host->rphy_list);
1453 if (identify->device_type == SAS_END_DEVICE &&
1454 (identify->target_port_protocols &
1455 (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
1456 rphy->scsi_target_id = sas_host->next_target_id++;
1457 else if (identify->device_type == SAS_END_DEVICE)
1458 rphy->scsi_target_id = -1;
1459 mutex_unlock(&sas_host->lock);
1460
1461 if (identify->device_type == SAS_END_DEVICE &&
1462 rphy->scsi_target_id != -1) {
1463 scsi_scan_target(&rphy->dev, 0,
1464 rphy->scsi_target_id, SCAN_WILD_CARD, 0);
1465 }
1466
1467 return 0;
1468}
1469EXPORT_SYMBOL(sas_rphy_add);
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482void sas_rphy_free(struct sas_rphy *rphy)
1483{
1484 struct device *dev = &rphy->dev;
1485 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1486 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1487
1488 mutex_lock(&sas_host->lock);
1489 list_del(&rphy->list);
1490 mutex_unlock(&sas_host->lock);
1491
1492 sas_bsg_remove(shost, rphy);
1493
1494 transport_destroy_device(dev);
1495
1496 put_device(dev);
1497}
1498EXPORT_SYMBOL(sas_rphy_free);
1499
1500
1501
1502
1503
1504
1505
1506void
1507sas_rphy_delete(struct sas_rphy *rphy)
1508{
1509 sas_rphy_remove(rphy);
1510 sas_rphy_free(rphy);
1511}
1512EXPORT_SYMBOL(sas_rphy_delete);
1513
1514
1515
1516
1517
1518
1519
1520void
1521sas_rphy_remove(struct sas_rphy *rphy)
1522{
1523 struct device *dev = &rphy->dev;
1524 struct sas_port *parent = dev_to_sas_port(dev->parent);
1525
1526 switch (rphy->identify.device_type) {
1527 case SAS_END_DEVICE:
1528 scsi_remove_target(dev);
1529 break;
1530 case SAS_EDGE_EXPANDER_DEVICE:
1531 case SAS_FANOUT_EXPANDER_DEVICE:
1532 sas_remove_children(dev);
1533 break;
1534 default:
1535 break;
1536 }
1537
1538 transport_remove_device(dev);
1539 device_del(dev);
1540
1541 parent->rphy = NULL;
1542}
1543EXPORT_SYMBOL(sas_rphy_remove);
1544
1545
1546
1547
1548
1549
1550
1551
1552int scsi_is_sas_rphy(const struct device *dev)
1553{
1554 return dev->release == sas_end_device_release ||
1555 dev->release == sas_expander_release;
1556}
1557EXPORT_SYMBOL(scsi_is_sas_rphy);
1558
1559
1560
1561
1562
1563
1564static int sas_user_scan(struct Scsi_Host *shost, uint channel,
1565 uint id, uint lun)
1566{
1567 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1568 struct sas_rphy *rphy;
1569
1570 mutex_lock(&sas_host->lock);
1571 list_for_each_entry(rphy, &sas_host->rphy_list, list) {
1572 if (rphy->identify.device_type != SAS_END_DEVICE ||
1573 rphy->scsi_target_id == -1)
1574 continue;
1575
1576 if ((channel == SCAN_WILD_CARD || channel == 0) &&
1577 (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
1578 scsi_scan_target(&rphy->dev, 0,
1579 rphy->scsi_target_id, lun, 1);
1580 }
1581 }
1582 mutex_unlock(&sas_host->lock);
1583
1584 return 0;
1585}
1586
1587
1588
1589
1590
1591
1592#define SETUP_TEMPLATE(attrb, field, perm, test) \
1593 i->private_##attrb[count] = dev_attr_##field; \
1594 i->private_##attrb[count].attr.mode = perm; \
1595 i->attrb[count] = &i->private_##attrb[count]; \
1596 if (test) \
1597 count++
1598
1599#define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \
1600 i->private_##attrb[count] = dev_attr_##field; \
1601 i->private_##attrb[count].attr.mode = perm; \
1602 if (ro_test) { \
1603 i->private_##attrb[count].attr.mode = ro_perm; \
1604 i->private_##attrb[count].store = NULL; \
1605 } \
1606 i->attrb[count] = &i->private_##attrb[count]; \
1607 if (test) \
1608 count++
1609
1610#define SETUP_RPORT_ATTRIBUTE(field) \
1611 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
1612
1613#define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
1614 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
1615
1616#define SETUP_PHY_ATTRIBUTE(field) \
1617 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
1618
1619#define SETUP_PHY_ATTRIBUTE_RW(field) \
1620 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1621 !i->f->set_phy_speed, S_IRUGO)
1622
1623#define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \
1624 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1625 !i->f->func, S_IRUGO)
1626
1627#define SETUP_PORT_ATTRIBUTE(field) \
1628 SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
1629
1630#define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
1631 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
1632
1633#define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
1634 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1)
1635
1636#define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
1637 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func)
1638
1639#define SETUP_END_DEV_ATTRIBUTE(field) \
1640 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
1641
1642#define SETUP_EXPANDER_ATTRIBUTE(field) \
1643 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1644
1645
1646
1647
1648
1649struct scsi_transport_template *
1650sas_attach_transport(struct sas_function_template *ft)
1651{
1652 struct sas_internal *i;
1653 int count;
1654
1655 i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
1656 if (!i)
1657 return NULL;
1658
1659 i->t.user_scan = sas_user_scan;
1660
1661 i->t.host_attrs.ac.attrs = &i->host_attrs[0];
1662 i->t.host_attrs.ac.class = &sas_host_class.class;
1663 i->t.host_attrs.ac.match = sas_host_match;
1664 transport_container_register(&i->t.host_attrs);
1665 i->t.host_size = sizeof(struct sas_host_attrs);
1666
1667 i->phy_attr_cont.ac.class = &sas_phy_class.class;
1668 i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
1669 i->phy_attr_cont.ac.match = sas_phy_match;
1670 transport_container_register(&i->phy_attr_cont);
1671
1672 i->port_attr_cont.ac.class = &sas_port_class.class;
1673 i->port_attr_cont.ac.attrs = &i->port_attrs[0];
1674 i->port_attr_cont.ac.match = sas_port_match;
1675 transport_container_register(&i->port_attr_cont);
1676
1677 i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
1678 i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
1679 i->rphy_attr_cont.ac.match = sas_rphy_match;
1680 transport_container_register(&i->rphy_attr_cont);
1681
1682 i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class;
1683 i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0];
1684 i->end_dev_attr_cont.ac.match = sas_end_dev_match;
1685 transport_container_register(&i->end_dev_attr_cont);
1686
1687 i->expander_attr_cont.ac.class = &sas_expander_class.class;
1688 i->expander_attr_cont.ac.attrs = &i->expander_attrs[0];
1689 i->expander_attr_cont.ac.match = sas_expander_match;
1690 transport_container_register(&i->expander_attr_cont);
1691
1692 i->f = ft;
1693
1694 count = 0;
1695 SETUP_PHY_ATTRIBUTE(initiator_port_protocols);
1696 SETUP_PHY_ATTRIBUTE(target_port_protocols);
1697 SETUP_PHY_ATTRIBUTE(device_type);
1698 SETUP_PHY_ATTRIBUTE(sas_address);
1699 SETUP_PHY_ATTRIBUTE(phy_identifier);
1700
1701 SETUP_PHY_ATTRIBUTE(negotiated_linkrate);
1702 SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw);
1703 SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate);
1704 SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw);
1705 SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate);
1706
1707 SETUP_PHY_ATTRIBUTE(invalid_dword_count);
1708 SETUP_PHY_ATTRIBUTE(running_disparity_error_count);
1709 SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count);
1710 SETUP_PHY_ATTRIBUTE(phy_reset_problem_count);
1711 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset);
1712 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
1713 SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable);
1714 i->phy_attrs[count] = NULL;
1715
1716 count = 0;
1717 SETUP_PORT_ATTRIBUTE(num_phys);
1718 i->port_attrs[count] = NULL;
1719
1720 count = 0;
1721 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
1722 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
1723 SETUP_RPORT_ATTRIBUTE(rphy_device_type);
1724 SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
1725 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
1726 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
1727 get_enclosure_identifier);
1728 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
1729 get_bay_identifier);
1730 i->rphy_attrs[count] = NULL;
1731
1732 count = 0;
1733 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning);
1734 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout);
1735 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout);
1736 i->end_dev_attrs[count] = NULL;
1737
1738 count = 0;
1739 SETUP_EXPANDER_ATTRIBUTE(vendor_id);
1740 SETUP_EXPANDER_ATTRIBUTE(product_id);
1741 SETUP_EXPANDER_ATTRIBUTE(product_rev);
1742 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id);
1743 SETUP_EXPANDER_ATTRIBUTE(component_id);
1744 SETUP_EXPANDER_ATTRIBUTE(component_revision_id);
1745 SETUP_EXPANDER_ATTRIBUTE(level);
1746 i->expander_attrs[count] = NULL;
1747
1748 return &i->t;
1749}
1750EXPORT_SYMBOL(sas_attach_transport);
1751
1752
1753
1754
1755
1756void sas_release_transport(struct scsi_transport_template *t)
1757{
1758 struct sas_internal *i = to_sas_internal(t);
1759
1760 transport_container_unregister(&i->t.host_attrs);
1761 transport_container_unregister(&i->phy_attr_cont);
1762 transport_container_unregister(&i->port_attr_cont);
1763 transport_container_unregister(&i->rphy_attr_cont);
1764 transport_container_unregister(&i->end_dev_attr_cont);
1765 transport_container_unregister(&i->expander_attr_cont);
1766
1767 kfree(i);
1768}
1769EXPORT_SYMBOL(sas_release_transport);
1770
1771static __init int sas_transport_init(void)
1772{
1773 int error;
1774
1775 error = transport_class_register(&sas_host_class);
1776 if (error)
1777 goto out;
1778 error = transport_class_register(&sas_phy_class);
1779 if (error)
1780 goto out_unregister_transport;
1781 error = transport_class_register(&sas_port_class);
1782 if (error)
1783 goto out_unregister_phy;
1784 error = transport_class_register(&sas_rphy_class);
1785 if (error)
1786 goto out_unregister_port;
1787 error = transport_class_register(&sas_end_dev_class);
1788 if (error)
1789 goto out_unregister_rphy;
1790 error = transport_class_register(&sas_expander_class);
1791 if (error)
1792 goto out_unregister_end_dev;
1793
1794 return 0;
1795
1796 out_unregister_end_dev:
1797 transport_class_unregister(&sas_end_dev_class);
1798 out_unregister_rphy:
1799 transport_class_unregister(&sas_rphy_class);
1800 out_unregister_port:
1801 transport_class_unregister(&sas_port_class);
1802 out_unregister_phy:
1803 transport_class_unregister(&sas_phy_class);
1804 out_unregister_transport:
1805 transport_class_unregister(&sas_host_class);
1806 out:
1807 return error;
1808
1809}
1810
1811static void __exit sas_transport_exit(void)
1812{
1813 transport_class_unregister(&sas_host_class);
1814 transport_class_unregister(&sas_phy_class);
1815 transport_class_unregister(&sas_port_class);
1816 transport_class_unregister(&sas_rphy_class);
1817 transport_class_unregister(&sas_end_dev_class);
1818 transport_class_unregister(&sas_expander_class);
1819}
1820
1821MODULE_AUTHOR("Christoph Hellwig");
1822MODULE_DESCRIPTION("SAS Transport Attributes");
1823MODULE_LICENSE("GPL");
1824
1825module_init(sas_transport_init);
1826module_exit(sas_transport_exit);
1827
