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8#include <linux/slab.h>
9#include <linux/module.h>
10#include <linux/kernel.h>
11#include <linux/enclosure.h>
12#include <asm/unaligned.h>
13
14#include <scsi/scsi.h>
15#include <scsi/scsi_cmnd.h>
16#include <scsi/scsi_dbg.h>
17#include <scsi/scsi_device.h>
18#include <scsi/scsi_driver.h>
19#include <scsi/scsi_host.h>
20
21#include <scsi/scsi_transport_sas.h>
22
23struct ses_device {
24 unsigned char *page1;
25 unsigned char *page1_types;
26 unsigned char *page2;
27 unsigned char *page10;
28 short page1_len;
29 short page1_num_types;
30 short page2_len;
31 short page10_len;
32};
33
34struct ses_component {
35 u64 addr;
36};
37
38static bool ses_page2_supported(struct enclosure_device *edev)
39{
40 struct ses_device *ses_dev = edev->scratch;
41
42 return (ses_dev->page2 != NULL);
43}
44
45static int ses_probe(struct device *dev)
46{
47 struct scsi_device *sdev = to_scsi_device(dev);
48 int err = -ENODEV;
49
50 if (sdev->type != TYPE_ENCLOSURE)
51 goto out;
52
53 err = 0;
54 sdev_printk(KERN_NOTICE, sdev, "Attached Enclosure device\n");
55
56 out:
57 return err;
58}
59
60#define SES_TIMEOUT (30 * HZ)
61#define SES_RETRIES 3
62
63static void init_device_slot_control(unsigned char *dest_desc,
64 struct enclosure_component *ecomp,
65 unsigned char *status)
66{
67 memcpy(dest_desc, status, 4);
68 dest_desc[0] = 0;
69
70 if (ecomp->type == ENCLOSURE_COMPONENT_DEVICE)
71 dest_desc[1] = 0;
72 dest_desc[2] &= 0xde;
73 dest_desc[3] &= 0x3c;
74}
75
76
77static int ses_recv_diag(struct scsi_device *sdev, int page_code,
78 void *buf, int bufflen)
79{
80 int ret;
81 unsigned char cmd[] = {
82 RECEIVE_DIAGNOSTIC,
83 1,
84 page_code,
85 bufflen >> 8,
86 bufflen & 0xff,
87 0
88 };
89 unsigned char recv_page_code;
90
91 ret = scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buf, bufflen,
92 NULL, SES_TIMEOUT, SES_RETRIES, NULL);
93 if (unlikely(ret))
94 return ret;
95
96 recv_page_code = ((unsigned char *)buf)[0];
97
98 if (likely(recv_page_code == page_code))
99 return ret;
100
101
102
103
104 sdev_printk(KERN_ERR, sdev,
105 "Wrong diagnostic page; asked for %d got %u\n",
106 page_code, recv_page_code);
107
108 return -EINVAL;
109}
110
111static int ses_send_diag(struct scsi_device *sdev, int page_code,
112 void *buf, int bufflen)
113{
114 u32 result;
115
116 unsigned char cmd[] = {
117 SEND_DIAGNOSTIC,
118 0x10,
119 0,
120 bufflen >> 8,
121 bufflen & 0xff,
122 0
123 };
124
125 result = scsi_execute_req(sdev, cmd, DMA_TO_DEVICE, buf, bufflen,
126 NULL, SES_TIMEOUT, SES_RETRIES, NULL);
127 if (result)
128 sdev_printk(KERN_ERR, sdev, "SEND DIAGNOSTIC result: %8x\n",
129 result);
130 return result;
131}
132
133static int ses_set_page2_descriptor(struct enclosure_device *edev,
134 struct enclosure_component *ecomp,
135 unsigned char *desc)
136{
137 int i, j, count = 0, descriptor = ecomp->number;
138 struct scsi_device *sdev = to_scsi_device(edev->edev.parent);
139 struct ses_device *ses_dev = edev->scratch;
140 unsigned char *type_ptr = ses_dev->page1_types;
141 unsigned char *desc_ptr = ses_dev->page2 + 8;
142
143
144 memset(desc_ptr, 0, ses_dev->page2_len - 8);
145 for (i = 0; i < ses_dev->page1_num_types; i++, type_ptr += 4) {
146 for (j = 0; j < type_ptr[1]; j++) {
147 desc_ptr += 4;
148 if (type_ptr[0] != ENCLOSURE_COMPONENT_DEVICE &&
149 type_ptr[0] != ENCLOSURE_COMPONENT_ARRAY_DEVICE)
150 continue;
151 if (count++ == descriptor) {
152 memcpy(desc_ptr, desc, 4);
153
154 desc_ptr[0] |= 0x80;
155
156 desc_ptr[0] &= 0xf0;
157 }
158 }
159 }
160
161 return ses_send_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len);
162}
163
164static unsigned char *ses_get_page2_descriptor(struct enclosure_device *edev,
165 struct enclosure_component *ecomp)
166{
167 int i, j, count = 0, descriptor = ecomp->number;
168 struct scsi_device *sdev = to_scsi_device(edev->edev.parent);
169 struct ses_device *ses_dev = edev->scratch;
170 unsigned char *type_ptr = ses_dev->page1_types;
171 unsigned char *desc_ptr = ses_dev->page2 + 8;
172
173 if (ses_recv_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len) < 0)
174 return NULL;
175
176 for (i = 0; i < ses_dev->page1_num_types; i++, type_ptr += 4) {
177 for (j = 0; j < type_ptr[1]; j++) {
178 desc_ptr += 4;
179 if (type_ptr[0] != ENCLOSURE_COMPONENT_DEVICE &&
180 type_ptr[0] != ENCLOSURE_COMPONENT_ARRAY_DEVICE)
181 continue;
182 if (count++ == descriptor)
183 return desc_ptr;
184 }
185 }
186 return NULL;
187}
188
189
190
191
192
193static void ses_get_fault(struct enclosure_device *edev,
194 struct enclosure_component *ecomp)
195{
196 unsigned char *desc;
197
198 if (!ses_page2_supported(edev)) {
199 ecomp->fault = 0;
200 return;
201 }
202 desc = ses_get_page2_descriptor(edev, ecomp);
203 if (desc)
204 ecomp->fault = (desc[3] & 0x60) >> 4;
205}
206
207static int ses_set_fault(struct enclosure_device *edev,
208 struct enclosure_component *ecomp,
209 enum enclosure_component_setting val)
210{
211 unsigned char desc[4];
212 unsigned char *desc_ptr;
213
214 if (!ses_page2_supported(edev))
215 return -EINVAL;
216
217 desc_ptr = ses_get_page2_descriptor(edev, ecomp);
218
219 if (!desc_ptr)
220 return -EIO;
221
222 init_device_slot_control(desc, ecomp, desc_ptr);
223
224 switch (val) {
225 case ENCLOSURE_SETTING_DISABLED:
226 desc[3] &= 0xdf;
227 break;
228 case ENCLOSURE_SETTING_ENABLED:
229 desc[3] |= 0x20;
230 break;
231 default:
232
233 return -EINVAL;
234 }
235
236 return ses_set_page2_descriptor(edev, ecomp, desc);
237}
238
239static void ses_get_status(struct enclosure_device *edev,
240 struct enclosure_component *ecomp)
241{
242 unsigned char *desc;
243
244 if (!ses_page2_supported(edev)) {
245 ecomp->status = 0;
246 return;
247 }
248 desc = ses_get_page2_descriptor(edev, ecomp);
249 if (desc)
250 ecomp->status = (desc[0] & 0x0f);
251}
252
253static void ses_get_locate(struct enclosure_device *edev,
254 struct enclosure_component *ecomp)
255{
256 unsigned char *desc;
257
258 if (!ses_page2_supported(edev)) {
259 ecomp->locate = 0;
260 return;
261 }
262 desc = ses_get_page2_descriptor(edev, ecomp);
263 if (desc)
264 ecomp->locate = (desc[2] & 0x02) ? 1 : 0;
265}
266
267static int ses_set_locate(struct enclosure_device *edev,
268 struct enclosure_component *ecomp,
269 enum enclosure_component_setting val)
270{
271 unsigned char desc[4];
272 unsigned char *desc_ptr;
273
274 if (!ses_page2_supported(edev))
275 return -EINVAL;
276
277 desc_ptr = ses_get_page2_descriptor(edev, ecomp);
278
279 if (!desc_ptr)
280 return -EIO;
281
282 init_device_slot_control(desc, ecomp, desc_ptr);
283
284 switch (val) {
285 case ENCLOSURE_SETTING_DISABLED:
286 desc[2] &= 0xfd;
287 break;
288 case ENCLOSURE_SETTING_ENABLED:
289 desc[2] |= 0x02;
290 break;
291 default:
292
293 return -EINVAL;
294 }
295 return ses_set_page2_descriptor(edev, ecomp, desc);
296}
297
298static int ses_set_active(struct enclosure_device *edev,
299 struct enclosure_component *ecomp,
300 enum enclosure_component_setting val)
301{
302 unsigned char desc[4];
303 unsigned char *desc_ptr;
304
305 if (!ses_page2_supported(edev))
306 return -EINVAL;
307
308 desc_ptr = ses_get_page2_descriptor(edev, ecomp);
309
310 if (!desc_ptr)
311 return -EIO;
312
313 init_device_slot_control(desc, ecomp, desc_ptr);
314
315 switch (val) {
316 case ENCLOSURE_SETTING_DISABLED:
317 desc[2] &= 0x7f;
318 ecomp->active = 0;
319 break;
320 case ENCLOSURE_SETTING_ENABLED:
321 desc[2] |= 0x80;
322 ecomp->active = 1;
323 break;
324 default:
325
326 return -EINVAL;
327 }
328 return ses_set_page2_descriptor(edev, ecomp, desc);
329}
330
331static int ses_show_id(struct enclosure_device *edev, char *buf)
332{
333 struct ses_device *ses_dev = edev->scratch;
334 unsigned long long id = get_unaligned_be64(ses_dev->page1+8+4);
335
336 return sprintf(buf, "%#llx\n", id);
337}
338
339static void ses_get_power_status(struct enclosure_device *edev,
340 struct enclosure_component *ecomp)
341{
342 unsigned char *desc;
343
344 if (!ses_page2_supported(edev)) {
345 ecomp->power_status = 0;
346 return;
347 }
348
349 desc = ses_get_page2_descriptor(edev, ecomp);
350 if (desc)
351 ecomp->power_status = (desc[3] & 0x10) ? 0 : 1;
352}
353
354static int ses_set_power_status(struct enclosure_device *edev,
355 struct enclosure_component *ecomp,
356 int val)
357{
358 unsigned char desc[4];
359 unsigned char *desc_ptr;
360
361 if (!ses_page2_supported(edev))
362 return -EINVAL;
363
364 desc_ptr = ses_get_page2_descriptor(edev, ecomp);
365
366 if (!desc_ptr)
367 return -EIO;
368
369 init_device_slot_control(desc, ecomp, desc_ptr);
370
371 switch (val) {
372
373 case 0:
374 desc[3] |= 0x10;
375 break;
376 case 1:
377 desc[3] &= 0xef;
378 break;
379 default:
380 return -EINVAL;
381 }
382 ecomp->power_status = val;
383 return ses_set_page2_descriptor(edev, ecomp, desc);
384}
385
386static struct enclosure_component_callbacks ses_enclosure_callbacks = {
387 .get_fault = ses_get_fault,
388 .set_fault = ses_set_fault,
389 .get_status = ses_get_status,
390 .get_locate = ses_get_locate,
391 .set_locate = ses_set_locate,
392 .get_power_status = ses_get_power_status,
393 .set_power_status = ses_set_power_status,
394 .set_active = ses_set_active,
395 .show_id = ses_show_id,
396};
397
398struct ses_host_edev {
399 struct Scsi_Host *shost;
400 struct enclosure_device *edev;
401};
402
403#if 0
404int ses_match_host(struct enclosure_device *edev, void *data)
405{
406 struct ses_host_edev *sed = data;
407 struct scsi_device *sdev;
408
409 if (!scsi_is_sdev_device(edev->edev.parent))
410 return 0;
411
412 sdev = to_scsi_device(edev->edev.parent);
413
414 if (sdev->host != sed->shost)
415 return 0;
416
417 sed->edev = edev;
418 return 1;
419}
420#endif
421
422static void ses_process_descriptor(struct enclosure_component *ecomp,
423 unsigned char *desc)
424{
425 int eip = desc[0] & 0x10;
426 int invalid = desc[0] & 0x80;
427 enum scsi_protocol proto = desc[0] & 0x0f;
428 u64 addr = 0;
429 int slot = -1;
430 struct ses_component *scomp = ecomp->scratch;
431 unsigned char *d;
432
433 if (invalid)
434 return;
435
436 switch (proto) {
437 case SCSI_PROTOCOL_FCP:
438 if (eip) {
439 d = desc + 4;
440 slot = d[3];
441 }
442 break;
443 case SCSI_PROTOCOL_SAS:
444 if (eip) {
445 d = desc + 4;
446 slot = d[3];
447 d = desc + 8;
448 } else
449 d = desc + 4;
450
451 addr = (u64)d[12] << 56 |
452 (u64)d[13] << 48 |
453 (u64)d[14] << 40 |
454 (u64)d[15] << 32 |
455 (u64)d[16] << 24 |
456 (u64)d[17] << 16 |
457 (u64)d[18] << 8 |
458 (u64)d[19];
459 break;
460 default:
461
462 break;
463 }
464 ecomp->slot = slot;
465 scomp->addr = addr;
466}
467
468struct efd {
469 u64 addr;
470 struct device *dev;
471};
472
473static int ses_enclosure_find_by_addr(struct enclosure_device *edev,
474 void *data)
475{
476 struct efd *efd = data;
477 int i;
478 struct ses_component *scomp;
479
480 if (!edev->component[0].scratch)
481 return 0;
482
483 for (i = 0; i < edev->components; i++) {
484 scomp = edev->component[i].scratch;
485 if (scomp->addr != efd->addr)
486 continue;
487
488 if (enclosure_add_device(edev, i, efd->dev) == 0)
489 kobject_uevent(&efd->dev->kobj, KOBJ_CHANGE);
490 return 1;
491 }
492 return 0;
493}
494
495#define INIT_ALLOC_SIZE 32
496
497static void ses_enclosure_data_process(struct enclosure_device *edev,
498 struct scsi_device *sdev,
499 int create)
500{
501 u32 result;
502 unsigned char *buf = NULL, *type_ptr, *desc_ptr, *addl_desc_ptr = NULL;
503 int i, j, page7_len, len, components;
504 struct ses_device *ses_dev = edev->scratch;
505 int types = ses_dev->page1_num_types;
506 unsigned char *hdr_buf = kzalloc(INIT_ALLOC_SIZE, GFP_KERNEL);
507
508 if (!hdr_buf)
509 goto simple_populate;
510
511
512 if (ses_dev->page10)
513 ses_recv_diag(sdev, 10, ses_dev->page10, ses_dev->page10_len);
514
515 result = ses_recv_diag(sdev, 7, hdr_buf, INIT_ALLOC_SIZE);
516 if (result)
517 goto simple_populate;
518
519 page7_len = len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
520
521 buf = kzalloc(len + 1, GFP_KERNEL);
522 if (!buf)
523 goto simple_populate;
524 result = ses_recv_diag(sdev, 7, buf, len);
525 if (result) {
526 simple_populate:
527 kfree(buf);
528 buf = NULL;
529 desc_ptr = NULL;
530 len = 0;
531 page7_len = 0;
532 } else {
533 desc_ptr = buf + 8;
534 len = (desc_ptr[2] << 8) + desc_ptr[3];
535
536 desc_ptr += len + 4;
537 }
538 if (ses_dev->page10)
539 addl_desc_ptr = ses_dev->page10 + 8;
540 type_ptr = ses_dev->page1_types;
541 components = 0;
542 for (i = 0; i < types; i++, type_ptr += 4) {
543 for (j = 0; j < type_ptr[1]; j++) {
544 char *name = NULL;
545 struct enclosure_component *ecomp;
546
547 if (desc_ptr) {
548 if (desc_ptr >= buf + page7_len) {
549 desc_ptr = NULL;
550 } else {
551 len = (desc_ptr[2] << 8) + desc_ptr[3];
552 desc_ptr += 4;
553
554
555 desc_ptr[len] = '\0';
556 name = desc_ptr;
557 }
558 }
559 if (type_ptr[0] == ENCLOSURE_COMPONENT_DEVICE ||
560 type_ptr[0] == ENCLOSURE_COMPONENT_ARRAY_DEVICE) {
561
562 if (create)
563 ecomp = enclosure_component_alloc(
564 edev,
565 components++,
566 type_ptr[0],
567 name);
568 else
569 ecomp = &edev->component[components++];
570
571 if (!IS_ERR(ecomp)) {
572 if (addl_desc_ptr)
573 ses_process_descriptor(
574 ecomp,
575 addl_desc_ptr);
576 if (create)
577 enclosure_component_register(
578 ecomp);
579 }
580 }
581 if (desc_ptr)
582 desc_ptr += len;
583
584 if (addl_desc_ptr &&
585
586 (type_ptr[0] == ENCLOSURE_COMPONENT_DEVICE ||
587 type_ptr[0] == ENCLOSURE_COMPONENT_ARRAY_DEVICE ||
588 type_ptr[0] == ENCLOSURE_COMPONENT_SAS_EXPANDER ||
589
590 type_ptr[0] == ENCLOSURE_COMPONENT_SCSI_TARGET_PORT ||
591 type_ptr[0] == ENCLOSURE_COMPONENT_SCSI_INITIATOR_PORT ||
592 type_ptr[0] == ENCLOSURE_COMPONENT_CONTROLLER_ELECTRONICS))
593 addl_desc_ptr += addl_desc_ptr[1] + 2;
594
595 }
596 }
597 kfree(buf);
598 kfree(hdr_buf);
599}
600
601static void ses_match_to_enclosure(struct enclosure_device *edev,
602 struct scsi_device *sdev,
603 int refresh)
604{
605 struct scsi_device *edev_sdev = to_scsi_device(edev->edev.parent);
606 struct efd efd = {
607 .addr = 0,
608 };
609
610 if (refresh)
611 ses_enclosure_data_process(edev, edev_sdev, 0);
612
613 if (scsi_is_sas_rphy(sdev->sdev_target->dev.parent))
614 efd.addr = sas_get_address(sdev);
615
616 if (efd.addr) {
617 efd.dev = &sdev->sdev_gendev;
618
619 enclosure_for_each_device(ses_enclosure_find_by_addr, &efd);
620 }
621}
622
623static int ses_intf_add(struct device *cdev,
624 struct class_interface *intf)
625{
626 struct scsi_device *sdev = to_scsi_device(cdev->parent);
627 struct scsi_device *tmp_sdev;
628 unsigned char *buf = NULL, *hdr_buf, *type_ptr, page;
629 struct ses_device *ses_dev;
630 u32 result;
631 int i, types, len, components = 0;
632 int err = -ENOMEM;
633 int num_enclosures;
634 struct enclosure_device *edev;
635 struct ses_component *scomp = NULL;
636
637 if (!scsi_device_enclosure(sdev)) {
638
639 struct enclosure_device *prev = NULL;
640
641 while ((edev = enclosure_find(&sdev->host->shost_gendev, prev)) != NULL) {
642 ses_match_to_enclosure(edev, sdev, 1);
643 prev = edev;
644 }
645 return -ENODEV;
646 }
647
648
649 if (sdev->type != TYPE_ENCLOSURE)
650 sdev_printk(KERN_NOTICE, sdev, "Embedded Enclosure Device\n");
651
652 ses_dev = kzalloc(sizeof(*ses_dev), GFP_KERNEL);
653 hdr_buf = kzalloc(INIT_ALLOC_SIZE, GFP_KERNEL);
654 if (!hdr_buf || !ses_dev)
655 goto err_init_free;
656
657 page = 1;
658 result = ses_recv_diag(sdev, page, hdr_buf, INIT_ALLOC_SIZE);
659 if (result)
660 goto recv_failed;
661
662 len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
663 buf = kzalloc(len, GFP_KERNEL);
664 if (!buf)
665 goto err_free;
666
667 result = ses_recv_diag(sdev, page, buf, len);
668 if (result)
669 goto recv_failed;
670
671 types = 0;
672
673
674
675 num_enclosures = buf[1] + 1;
676
677
678 type_ptr = buf + 8;
679
680 for (i = 0; i < num_enclosures && type_ptr < buf + len; i++) {
681 types += type_ptr[2];
682 type_ptr += type_ptr[3] + 4;
683 }
684
685 ses_dev->page1_types = type_ptr;
686 ses_dev->page1_num_types = types;
687
688 for (i = 0; i < types && type_ptr < buf + len; i++, type_ptr += 4) {
689 if (type_ptr[0] == ENCLOSURE_COMPONENT_DEVICE ||
690 type_ptr[0] == ENCLOSURE_COMPONENT_ARRAY_DEVICE)
691 components += type_ptr[1];
692 }
693 ses_dev->page1 = buf;
694 ses_dev->page1_len = len;
695 buf = NULL;
696
697 page = 2;
698 result = ses_recv_diag(sdev, page, hdr_buf, INIT_ALLOC_SIZE);
699 if (result)
700 goto page2_not_supported;
701
702 len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
703 buf = kzalloc(len, GFP_KERNEL);
704 if (!buf)
705 goto err_free;
706
707
708 result = ses_recv_diag(sdev, 2, buf, len);
709 if (result)
710 goto recv_failed;
711 ses_dev->page2 = buf;
712 ses_dev->page2_len = len;
713 buf = NULL;
714
715
716
717 page = 10;
718 result = ses_recv_diag(sdev, page, hdr_buf, INIT_ALLOC_SIZE);
719 if (!result) {
720
721 len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
722 buf = kzalloc(len, GFP_KERNEL);
723 if (!buf)
724 goto err_free;
725
726 result = ses_recv_diag(sdev, page, buf, len);
727 if (result)
728 goto recv_failed;
729 ses_dev->page10 = buf;
730 ses_dev->page10_len = len;
731 buf = NULL;
732 }
733page2_not_supported:
734 scomp = kcalloc(components, sizeof(struct ses_component), GFP_KERNEL);
735 if (!scomp)
736 goto err_free;
737
738 edev = enclosure_register(cdev->parent, dev_name(&sdev->sdev_gendev),
739 components, &ses_enclosure_callbacks);
740 if (IS_ERR(edev)) {
741 err = PTR_ERR(edev);
742 goto err_free;
743 }
744
745 kfree(hdr_buf);
746
747 edev->scratch = ses_dev;
748 for (i = 0; i < components; i++)
749 edev->component[i].scratch = scomp + i;
750
751 ses_enclosure_data_process(edev, sdev, 1);
752
753
754
755 shost_for_each_device(tmp_sdev, sdev->host) {
756 if (tmp_sdev->lun != 0 || scsi_device_enclosure(tmp_sdev))
757 continue;
758 ses_match_to_enclosure(edev, tmp_sdev, 0);
759 }
760
761 return 0;
762
763 recv_failed:
764 sdev_printk(KERN_ERR, sdev, "Failed to get diagnostic page 0x%x\n",
765 page);
766 err = -ENODEV;
767 err_free:
768 kfree(buf);
769 kfree(scomp);
770 kfree(ses_dev->page10);
771 kfree(ses_dev->page2);
772 kfree(ses_dev->page1);
773 err_init_free:
774 kfree(ses_dev);
775 kfree(hdr_buf);
776 sdev_printk(KERN_ERR, sdev, "Failed to bind enclosure %d\n", err);
777 return err;
778}
779
780static int ses_remove(struct device *dev)
781{
782 return 0;
783}
784
785static void ses_intf_remove_component(struct scsi_device *sdev)
786{
787 struct enclosure_device *edev, *prev = NULL;
788
789 while ((edev = enclosure_find(&sdev->host->shost_gendev, prev)) != NULL) {
790 prev = edev;
791 if (!enclosure_remove_device(edev, &sdev->sdev_gendev))
792 break;
793 }
794 if (edev)
795 put_device(&edev->edev);
796}
797
798static void ses_intf_remove_enclosure(struct scsi_device *sdev)
799{
800 struct enclosure_device *edev;
801 struct ses_device *ses_dev;
802
803
804 edev = enclosure_find(&sdev->sdev_gendev, NULL);
805 if (!edev)
806 return;
807
808 ses_dev = edev->scratch;
809 edev->scratch = NULL;
810
811 kfree(ses_dev->page10);
812 kfree(ses_dev->page1);
813 kfree(ses_dev->page2);
814 kfree(ses_dev);
815
816 kfree(edev->component[0].scratch);
817
818 put_device(&edev->edev);
819 enclosure_unregister(edev);
820}
821
822static void ses_intf_remove(struct device *cdev,
823 struct class_interface *intf)
824{
825 struct scsi_device *sdev = to_scsi_device(cdev->parent);
826
827 if (!scsi_device_enclosure(sdev))
828 ses_intf_remove_component(sdev);
829 else
830 ses_intf_remove_enclosure(sdev);
831}
832
833static struct class_interface ses_interface = {
834 .add_dev = ses_intf_add,
835 .remove_dev = ses_intf_remove,
836};
837
838static struct scsi_driver ses_template = {
839 .gendrv = {
840 .name = "ses",
841 .owner = THIS_MODULE,
842 .probe = ses_probe,
843 .remove = ses_remove,
844 },
845};
846
847static int __init ses_init(void)
848{
849 int err;
850
851 err = scsi_register_interface(&ses_interface);
852 if (err)
853 return err;
854
855 err = scsi_register_driver(&ses_template.gendrv);
856 if (err)
857 goto out_unreg;
858
859 return 0;
860
861 out_unreg:
862 scsi_unregister_interface(&ses_interface);
863 return err;
864}
865
866static void __exit ses_exit(void)
867{
868 scsi_unregister_driver(&ses_template.gendrv);
869 scsi_unregister_interface(&ses_interface);
870}
871
872module_init(ses_init);
873module_exit(ses_exit);
874
875MODULE_ALIAS_SCSI_DEVICE(TYPE_ENCLOSURE);
876
877MODULE_AUTHOR("James Bottomley");
878MODULE_DESCRIPTION("SCSI Enclosure Services (ses) driver");
879MODULE_LICENSE("GPL v2");
880
