1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36#include <linux/slab.h>
37#include <linux/kernel.h>
38#include <linux/blkdev.h>
39#include <linux/spinlock.h>
40#include <linux/export.h>
41#include <scsi/scsi.h>
42#include <scsi/scsi_host.h>
43#include <scsi/scsi_cmnd.h>
44#include <scsi/scsi_eh.h>
45#include <scsi/scsi_device.h>
46#include <scsi/scsi_tcq.h>
47#include <scsi/scsi_transport.h>
48#include <linux/libata.h>
49#include <linux/hdreg.h>
50#include <linux/uaccess.h>
51#include <linux/suspend.h>
52#include <linux/pm_qos.h>
53#include <asm/unaligned.h>
54
55#include "libata.h"
56#include "libata-transport.h"
57
58#define ATA_SCSI_RBUF_SIZE 4096
59
60static DEFINE_SPINLOCK(ata_scsi_rbuf_lock);
61static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE];
62
63typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc);
64
65static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap,
66 const struct scsi_device *scsidev);
67static struct ata_device *ata_scsi_find_dev(struct ata_port *ap,
68 const struct scsi_device *scsidev);
69
70#define RW_RECOVERY_MPAGE 0x1
71#define RW_RECOVERY_MPAGE_LEN 12
72#define CACHE_MPAGE 0x8
73#define CACHE_MPAGE_LEN 20
74#define CONTROL_MPAGE 0xa
75#define CONTROL_MPAGE_LEN 12
76#define ALL_MPAGES 0x3f
77#define ALL_SUB_MPAGES 0xff
78
79
80static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = {
81 RW_RECOVERY_MPAGE,
82 RW_RECOVERY_MPAGE_LEN - 2,
83 (1 << 7),
84 0,
85 0, 0, 0, 0,
86 0,
87 0, 0, 0
88};
89
90static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = {
91 CACHE_MPAGE,
92 CACHE_MPAGE_LEN - 2,
93 0,
94 0, 0, 0, 0, 0, 0, 0, 0, 0,
95 0,
96 0, 0, 0, 0, 0, 0, 0
97};
98
99static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = {
100 CONTROL_MPAGE,
101 CONTROL_MPAGE_LEN - 2,
102 2,
103 0,
104 0, 0, 0, 0, 0xff, 0xff,
105 0, 30
106};
107
108static const char *ata_lpm_policy_names[] = {
109 [ATA_LPM_UNKNOWN] = "max_performance",
110 [ATA_LPM_MAX_POWER] = "max_performance",
111 [ATA_LPM_MED_POWER] = "medium_power",
112 [ATA_LPM_MIN_POWER] = "min_power",
113};
114
115static ssize_t ata_scsi_lpm_store(struct device *dev,
116 struct device_attribute *attr,
117 const char *buf, size_t count)
118{
119 struct Scsi_Host *shost = class_to_shost(dev);
120 struct ata_port *ap = ata_shost_to_port(shost);
121 enum ata_lpm_policy policy;
122 unsigned long flags;
123
124
125 for (policy = ATA_LPM_MAX_POWER;
126 policy < ARRAY_SIZE(ata_lpm_policy_names); policy++) {
127 const char *name = ata_lpm_policy_names[policy];
128
129 if (strncmp(name, buf, strlen(name)) == 0)
130 break;
131 }
132 if (policy == ARRAY_SIZE(ata_lpm_policy_names))
133 return -EINVAL;
134
135 spin_lock_irqsave(ap->lock, flags);
136 ap->target_lpm_policy = policy;
137 ata_port_schedule_eh(ap);
138 spin_unlock_irqrestore(ap->lock, flags);
139
140 return count;
141}
142
143static ssize_t ata_scsi_lpm_show(struct device *dev,
144 struct device_attribute *attr, char *buf)
145{
146 struct Scsi_Host *shost = class_to_shost(dev);
147 struct ata_port *ap = ata_shost_to_port(shost);
148
149 if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names))
150 return -EINVAL;
151
152 return snprintf(buf, PAGE_SIZE, "%s\n",
153 ata_lpm_policy_names[ap->target_lpm_policy]);
154}
155DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR,
156 ata_scsi_lpm_show, ata_scsi_lpm_store);
157EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy);
158
159static ssize_t ata_scsi_park_show(struct device *device,
160 struct device_attribute *attr, char *buf)
161{
162 struct scsi_device *sdev = to_scsi_device(device);
163 struct ata_port *ap;
164 struct ata_link *link;
165 struct ata_device *dev;
166 unsigned long flags, now;
167 unsigned int uninitialized_var(msecs);
168 int rc = 0;
169
170 ap = ata_shost_to_port(sdev->host);
171
172 spin_lock_irqsave(ap->lock, flags);
173 dev = ata_scsi_find_dev(ap, sdev);
174 if (!dev) {
175 rc = -ENODEV;
176 goto unlock;
177 }
178 if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
179 rc = -EOPNOTSUPP;
180 goto unlock;
181 }
182
183 link = dev->link;
184 now = jiffies;
185 if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS &&
186 link->eh_context.unloaded_mask & (1 << dev->devno) &&
187 time_after(dev->unpark_deadline, now))
188 msecs = jiffies_to_msecs(dev->unpark_deadline - now);
189 else
190 msecs = 0;
191
192unlock:
193 spin_unlock_irq(ap->lock);
194
195 return rc ? rc : snprintf(buf, 20, "%u\n", msecs);
196}
197
198static ssize_t ata_scsi_park_store(struct device *device,
199 struct device_attribute *attr,
200 const char *buf, size_t len)
201{
202 struct scsi_device *sdev = to_scsi_device(device);
203 struct ata_port *ap;
204 struct ata_device *dev;
205 long int input;
206 unsigned long flags;
207 int rc;
208
209 rc = kstrtol(buf, 10, &input);
210 if (rc)
211 return rc;
212 if (input < -2)
213 return -EINVAL;
214 if (input > ATA_TMOUT_MAX_PARK) {
215 rc = -EOVERFLOW;
216 input = ATA_TMOUT_MAX_PARK;
217 }
218
219 ap = ata_shost_to_port(sdev->host);
220
221 spin_lock_irqsave(ap->lock, flags);
222 dev = ata_scsi_find_dev(ap, sdev);
223 if (unlikely(!dev)) {
224 rc = -ENODEV;
225 goto unlock;
226 }
227 if (dev->class != ATA_DEV_ATA) {
228 rc = -EOPNOTSUPP;
229 goto unlock;
230 }
231
232 if (input >= 0) {
233 if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
234 rc = -EOPNOTSUPP;
235 goto unlock;
236 }
237
238 dev->unpark_deadline = ata_deadline(jiffies, input);
239 dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK;
240 ata_port_schedule_eh(ap);
241 complete(&ap->park_req_pending);
242 } else {
243 switch (input) {
244 case -1:
245 dev->flags &= ~ATA_DFLAG_NO_UNLOAD;
246 break;
247 case -2:
248 dev->flags |= ATA_DFLAG_NO_UNLOAD;
249 break;
250 }
251 }
252unlock:
253 spin_unlock_irqrestore(ap->lock, flags);
254
255 return rc ? rc : len;
256}
257DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR,
258 ata_scsi_park_show, ata_scsi_park_store);
259EXPORT_SYMBOL_GPL(dev_attr_unload_heads);
260
261static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
262{
263 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
264
265 scsi_build_sense_buffer(0, cmd->sense_buffer, sk, asc, ascq);
266}
267
268static ssize_t
269ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr,
270 const char *buf, size_t count)
271{
272 struct Scsi_Host *shost = class_to_shost(dev);
273 struct ata_port *ap = ata_shost_to_port(shost);
274 if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM))
275 return ap->ops->em_store(ap, buf, count);
276 return -EINVAL;
277}
278
279static ssize_t
280ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr,
281 char *buf)
282{
283 struct Scsi_Host *shost = class_to_shost(dev);
284 struct ata_port *ap = ata_shost_to_port(shost);
285
286 if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM))
287 return ap->ops->em_show(ap, buf);
288 return -EINVAL;
289}
290DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR,
291 ata_scsi_em_message_show, ata_scsi_em_message_store);
292EXPORT_SYMBOL_GPL(dev_attr_em_message);
293
294static ssize_t
295ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr,
296 char *buf)
297{
298 struct Scsi_Host *shost = class_to_shost(dev);
299 struct ata_port *ap = ata_shost_to_port(shost);
300
301 return snprintf(buf, 23, "%d\n", ap->em_message_type);
302}
303DEVICE_ATTR(em_message_type, S_IRUGO,
304 ata_scsi_em_message_type_show, NULL);
305EXPORT_SYMBOL_GPL(dev_attr_em_message_type);
306
307static ssize_t
308ata_scsi_activity_show(struct device *dev, struct device_attribute *attr,
309 char *buf)
310{
311 struct scsi_device *sdev = to_scsi_device(dev);
312 struct ata_port *ap = ata_shost_to_port(sdev->host);
313 struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
314
315 if (atadev && ap->ops->sw_activity_show &&
316 (ap->flags & ATA_FLAG_SW_ACTIVITY))
317 return ap->ops->sw_activity_show(atadev, buf);
318 return -EINVAL;
319}
320
321static ssize_t
322ata_scsi_activity_store(struct device *dev, struct device_attribute *attr,
323 const char *buf, size_t count)
324{
325 struct scsi_device *sdev = to_scsi_device(dev);
326 struct ata_port *ap = ata_shost_to_port(sdev->host);
327 struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
328 enum sw_activity val;
329 int rc;
330
331 if (atadev && ap->ops->sw_activity_store &&
332 (ap->flags & ATA_FLAG_SW_ACTIVITY)) {
333 val = simple_strtoul(buf, NULL, 0);
334 switch (val) {
335 case OFF: case BLINK_ON: case BLINK_OFF:
336 rc = ap->ops->sw_activity_store(atadev, val);
337 if (!rc)
338 return count;
339 else
340 return rc;
341 }
342 }
343 return -EINVAL;
344}
345DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show,
346 ata_scsi_activity_store);
347EXPORT_SYMBOL_GPL(dev_attr_sw_activity);
348
349struct device_attribute *ata_common_sdev_attrs[] = {
350 &dev_attr_unload_heads,
351 NULL
352};
353EXPORT_SYMBOL_GPL(ata_common_sdev_attrs);
354
355static void ata_scsi_invalid_field(struct scsi_cmnd *cmd)
356{
357 ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0);
358
359 cmd->scsi_done(cmd);
360}
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev,
381 sector_t capacity, int geom[])
382{
383 geom[0] = 255;
384 geom[1] = 63;
385 sector_div(capacity, 255*63);
386 geom[2] = capacity;
387
388 return 0;
389}
390
391
392
393
394
395
396
397
398
399
400
401void ata_scsi_unlock_native_capacity(struct scsi_device *sdev)
402{
403 struct ata_port *ap = ata_shost_to_port(sdev->host);
404 struct ata_device *dev;
405 unsigned long flags;
406
407 spin_lock_irqsave(ap->lock, flags);
408
409 dev = ata_scsi_find_dev(ap, sdev);
410 if (dev && dev->n_sectors < dev->n_native_sectors) {
411 dev->flags |= ATA_DFLAG_UNLOCK_HPA;
412 dev->link->eh_info.action |= ATA_EH_RESET;
413 ata_port_schedule_eh(ap);
414 }
415
416 spin_unlock_irqrestore(ap->lock, flags);
417 ata_port_wait_eh(ap);
418}
419
420
421
422
423
424
425
426
427
428
429
430
431
432static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev,
433 void __user *arg)
434{
435 struct ata_device *dev = ata_scsi_find_dev(ap, sdev);
436 u16 __user *dst = arg;
437 char buf[40];
438
439 if (!dev)
440 return -ENOMSG;
441
442 if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16)))
443 return -EFAULT;
444
445 ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN);
446 if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN))
447 return -EFAULT;
448
449 ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN);
450 if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN))
451 return -EFAULT;
452
453 ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN);
454 if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN))
455 return -EFAULT;
456
457 return 0;
458}
459
460
461
462
463
464
465
466
467
468
469
470
471int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
472{
473 int rc = 0;
474 u8 scsi_cmd[MAX_COMMAND_SIZE];
475 u8 args[4], *argbuf = NULL, *sensebuf = NULL;
476 int argsize = 0;
477 enum dma_data_direction data_dir;
478 int cmd_result;
479
480 if (arg == NULL)
481 return -EINVAL;
482
483 if (copy_from_user(args, arg, sizeof(args)))
484 return -EFAULT;
485
486 sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO);
487 if (!sensebuf)
488 return -ENOMEM;
489
490 memset(scsi_cmd, 0, sizeof(scsi_cmd));
491
492 if (args[3]) {
493 argsize = ATA_SECT_SIZE * args[3];
494 argbuf = kmalloc(argsize, GFP_KERNEL);
495 if (argbuf == NULL) {
496 rc = -ENOMEM;
497 goto error;
498 }
499
500 scsi_cmd[1] = (4 << 1);
501 scsi_cmd[2] = 0x0e;
502
503 data_dir = DMA_FROM_DEVICE;
504 } else {
505 scsi_cmd[1] = (3 << 1);
506 scsi_cmd[2] = 0x20;
507 data_dir = DMA_NONE;
508 }
509
510 scsi_cmd[0] = ATA_16;
511
512 scsi_cmd[4] = args[2];
513 if (args[0] == ATA_CMD_SMART) {
514 scsi_cmd[6] = args[3];
515 scsi_cmd[8] = args[1];
516 scsi_cmd[10] = 0x4f;
517 scsi_cmd[12] = 0xc2;
518 } else {
519 scsi_cmd[6] = args[1];
520 }
521 scsi_cmd[14] = args[0];
522
523
524
525 cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize,
526 sensebuf, (10*HZ), 5, 0, NULL);
527
528 if (driver_byte(cmd_result) == DRIVER_SENSE) {
529 u8 *desc = sensebuf + 8;
530 cmd_result &= ~(0xFF<<24);
531
532
533
534 if (cmd_result & SAM_STAT_CHECK_CONDITION) {
535 struct scsi_sense_hdr sshdr;
536 scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE,
537 &sshdr);
538 if (sshdr.sense_key == RECOVERED_ERROR &&
539 sshdr.asc == 0 && sshdr.ascq == 0x1d)
540 cmd_result &= ~SAM_STAT_CHECK_CONDITION;
541 }
542
543
544 if (sensebuf[0] == 0x72 &&
545 desc[0] == 0x09) {
546 args[0] = desc[13];
547 args[1] = desc[3];
548 args[2] = desc[5];
549 if (copy_to_user(arg, args, sizeof(args)))
550 rc = -EFAULT;
551 }
552 }
553
554
555 if (cmd_result) {
556 rc = -EIO;
557 goto error;
558 }
559
560 if ((argbuf)
561 && copy_to_user(arg + sizeof(args), argbuf, argsize))
562 rc = -EFAULT;
563error:
564 kfree(sensebuf);
565 kfree(argbuf);
566 return rc;
567}
568
569
570
571
572
573
574
575
576
577
578
579
580int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
581{
582 int rc = 0;
583 u8 scsi_cmd[MAX_COMMAND_SIZE];
584 u8 args[7], *sensebuf = NULL;
585 int cmd_result;
586
587 if (arg == NULL)
588 return -EINVAL;
589
590 if (copy_from_user(args, arg, sizeof(args)))
591 return -EFAULT;
592
593 sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO);
594 if (!sensebuf)
595 return -ENOMEM;
596
597 memset(scsi_cmd, 0, sizeof(scsi_cmd));
598 scsi_cmd[0] = ATA_16;
599 scsi_cmd[1] = (3 << 1);
600 scsi_cmd[2] = 0x20;
601 scsi_cmd[4] = args[1];
602 scsi_cmd[6] = args[2];
603 scsi_cmd[8] = args[3];
604 scsi_cmd[10] = args[4];
605 scsi_cmd[12] = args[5];
606 scsi_cmd[13] = args[6] & 0x4f;
607 scsi_cmd[14] = args[0];
608
609
610
611 cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0,
612 sensebuf, (10*HZ), 5, 0, NULL);
613
614 if (driver_byte(cmd_result) == DRIVER_SENSE) {
615 u8 *desc = sensebuf + 8;
616 cmd_result &= ~(0xFF<<24);
617
618
619
620 if (cmd_result & SAM_STAT_CHECK_CONDITION) {
621 struct scsi_sense_hdr sshdr;
622 scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE,
623 &sshdr);
624 if (sshdr.sense_key == RECOVERED_ERROR &&
625 sshdr.asc == 0 && sshdr.ascq == 0x1d)
626 cmd_result &= ~SAM_STAT_CHECK_CONDITION;
627 }
628
629
630 if (sensebuf[0] == 0x72 &&
631 desc[0] == 0x09) {
632 args[0] = desc[13];
633 args[1] = desc[3];
634 args[2] = desc[5];
635 args[3] = desc[7];
636 args[4] = desc[9];
637 args[5] = desc[11];
638 args[6] = desc[12];
639 if (copy_to_user(arg, args, sizeof(args)))
640 rc = -EFAULT;
641 }
642 }
643
644 if (cmd_result) {
645 rc = -EIO;
646 goto error;
647 }
648
649 error:
650 kfree(sensebuf);
651 return rc;
652}
653
654static int ata_ioc32(struct ata_port *ap)
655{
656 if (ap->flags & ATA_FLAG_PIO_DMA)
657 return 1;
658 if (ap->pflags & ATA_PFLAG_PIO32)
659 return 1;
660 return 0;
661}
662
663int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev,
664 int cmd, void __user *arg)
665{
666 int val = -EINVAL, rc = -EINVAL;
667 unsigned long flags;
668
669 switch (cmd) {
670 case ATA_IOC_GET_IO32:
671 spin_lock_irqsave(ap->lock, flags);
672 val = ata_ioc32(ap);
673 spin_unlock_irqrestore(ap->lock, flags);
674 if (copy_to_user(arg, &val, 1))
675 return -EFAULT;
676 return 0;
677
678 case ATA_IOC_SET_IO32:
679 val = (unsigned long) arg;
680 rc = 0;
681 spin_lock_irqsave(ap->lock, flags);
682 if (ap->pflags & ATA_PFLAG_PIO32CHANGE) {
683 if (val)
684 ap->pflags |= ATA_PFLAG_PIO32;
685 else
686 ap->pflags &= ~ATA_PFLAG_PIO32;
687 } else {
688 if (val != ata_ioc32(ap))
689 rc = -EINVAL;
690 }
691 spin_unlock_irqrestore(ap->lock, flags);
692 return rc;
693
694 case HDIO_GET_IDENTITY:
695 return ata_get_identity(ap, scsidev, arg);
696
697 case HDIO_DRIVE_CMD:
698 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
699 return -EACCES;
700 return ata_cmd_ioctl(scsidev, arg);
701
702 case HDIO_DRIVE_TASK:
703 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
704 return -EACCES;
705 return ata_task_ioctl(scsidev, arg);
706
707 default:
708 rc = -ENOTTY;
709 break;
710 }
711
712 return rc;
713}
714EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl);
715
716int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
717{
718 return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host),
719 scsidev, cmd, arg);
720}
721EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev,
743 struct scsi_cmnd *cmd)
744{
745 struct ata_queued_cmd *qc;
746
747 qc = ata_qc_new_init(dev);
748 if (qc) {
749 qc->scsicmd = cmd;
750 qc->scsidone = cmd->scsi_done;
751
752 qc->sg = scsi_sglist(cmd);
753 qc->n_elem = scsi_sg_count(cmd);
754 } else {
755 cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1);
756 cmd->scsi_done(cmd);
757 }
758
759 return qc;
760}
761
762static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc)
763{
764 struct scsi_cmnd *scmd = qc->scsicmd;
765
766 qc->extrabytes = scmd->request->extra_len;
767 qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes;
768}
769
770
771
772
773
774
775
776
777
778
779
780
781
782static void ata_dump_status(unsigned id, struct ata_taskfile *tf)
783{
784 u8 stat = tf->command, err = tf->feature;
785
786 printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat);
787 if (stat & ATA_BUSY) {
788 printk("Busy }\n");
789 } else {
790 if (stat & 0x40) printk("DriveReady ");
791 if (stat & 0x20) printk("DeviceFault ");
792 if (stat & 0x10) printk("SeekComplete ");
793 if (stat & 0x08) printk("DataRequest ");
794 if (stat & 0x04) printk("CorrectedError ");
795 if (stat & 0x02) printk("Index ");
796 if (stat & 0x01) printk("Error ");
797 printk("}\n");
798
799 if (err) {
800 printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err);
801 if (err & 0x04) printk("DriveStatusError ");
802 if (err & 0x80) {
803 if (err & 0x04) printk("BadCRC ");
804 else printk("Sector ");
805 }
806 if (err & 0x40) printk("UncorrectableError ");
807 if (err & 0x10) printk("SectorIdNotFound ");
808 if (err & 0x02) printk("TrackZeroNotFound ");
809 if (err & 0x01) printk("AddrMarkNotFound ");
810 printk("}\n");
811 }
812 }
813}
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk,
833 u8 *asc, u8 *ascq, int verbose)
834{
835 int i;
836
837
838 static const unsigned char sense_table[][4] = {
839
840 {0xd1, ABORTED_COMMAND, 0x00, 0x00},
841
842 {0xd0, ABORTED_COMMAND, 0x00, 0x00},
843
844 {0x61, HARDWARE_ERROR, 0x00, 0x00},
845
846 {0x84, ABORTED_COMMAND, 0x47, 0x00},
847
848 {0x37, NOT_READY, 0x04, 0x00},
849
850 {0x09, NOT_READY, 0x04, 0x00},
851
852 {0x01, MEDIUM_ERROR, 0x13, 0x00},
853
854 {0x02, HARDWARE_ERROR, 0x00, 0x00},
855
856
857 {0x08, NOT_READY, 0x04, 0x00},
858
859 {0x10, ILLEGAL_REQUEST, 0x21, 0x00},
860
861 {0x20, UNIT_ATTENTION, 0x28, 0x00},
862
863 {0x40, MEDIUM_ERROR, 0x11, 0x04},
864
865 {0x80, MEDIUM_ERROR, 0x11, 0x04},
866 {0xFF, 0xFF, 0xFF, 0xFF},
867 };
868 static const unsigned char stat_table[][4] = {
869
870 {0x80, ABORTED_COMMAND, 0x47, 0x00},
871 {0x20, HARDWARE_ERROR, 0x44, 0x00},
872 {0x08, ABORTED_COMMAND, 0x47, 0x00},
873 {0x04, RECOVERED_ERROR, 0x11, 0x00},
874 {0xFF, 0xFF, 0xFF, 0xFF},
875 };
876
877
878
879
880 if (drv_stat & ATA_BUSY) {
881 drv_err = 0;
882 }
883
884 if (drv_err) {
885
886 for (i = 0; sense_table[i][0] != 0xFF; i++) {
887
888 if ((sense_table[i][0] & drv_err) ==
889 sense_table[i][0]) {
890 *sk = sense_table[i][1];
891 *asc = sense_table[i][2];
892 *ascq = sense_table[i][3];
893 goto translate_done;
894 }
895 }
896 }
897
898
899
900
901
902
903 for (i = 0; stat_table[i][0] != 0xFF; i++) {
904 if (stat_table[i][0] & drv_stat) {
905 *sk = stat_table[i][1];
906 *asc = stat_table[i][2];
907 *ascq = stat_table[i][3];
908 goto translate_done;
909 }
910 }
911
912
913
914
915
916 *sk = ABORTED_COMMAND;
917 *asc = 0x00;
918 *ascq = 0x00;
919
920 translate_done:
921 if (verbose)
922 printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x "
923 "to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n",
924 id, drv_stat, drv_err, *sk, *asc, *ascq);
925 return;
926}
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
946{
947 struct scsi_cmnd *cmd = qc->scsicmd;
948 struct ata_taskfile *tf = &qc->result_tf;
949 unsigned char *sb = cmd->sense_buffer;
950 unsigned char *desc = sb + 8;
951 int verbose = qc->ap->ops->error_handler == NULL;
952
953 memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
954
955 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
956
957
958
959
960
961 if (qc->err_mask ||
962 tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
963 ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
964 &sb[1], &sb[2], &sb[3], verbose);
965 sb[1] &= 0x0f;
966 } else {
967 sb[1] = RECOVERED_ERROR;
968 sb[2] = 0;
969 sb[3] = 0x1D;
970 }
971
972
973
974
975 sb[0] = 0x72;
976
977 desc[0] = 0x09;
978
979
980 sb[7] = 14;
981 desc[1] = 12;
982
983
984
985
986 desc[2] = 0x00;
987 desc[3] = tf->feature;
988 desc[5] = tf->nsect;
989 desc[7] = tf->lbal;
990 desc[9] = tf->lbam;
991 desc[11] = tf->lbah;
992 desc[12] = tf->device;
993 desc[13] = tf->command;
994
995
996
997
998
999 if (tf->flags & ATA_TFLAG_LBA48) {
1000 desc[2] |= 0x01;
1001 desc[4] = tf->hob_nsect;
1002 desc[6] = tf->hob_lbal;
1003 desc[8] = tf->hob_lbam;
1004 desc[10] = tf->hob_lbah;
1005 }
1006}
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018static void ata_gen_ata_sense(struct ata_queued_cmd *qc)
1019{
1020 struct ata_device *dev = qc->dev;
1021 struct scsi_cmnd *cmd = qc->scsicmd;
1022 struct ata_taskfile *tf = &qc->result_tf;
1023 unsigned char *sb = cmd->sense_buffer;
1024 unsigned char *desc = sb + 8;
1025 int verbose = qc->ap->ops->error_handler == NULL;
1026 u64 block;
1027
1028 memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
1029
1030 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
1031
1032
1033 sb[0] = 0x72;
1034
1035
1036
1037
1038 if (qc->err_mask ||
1039 tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
1040 ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
1041 &sb[1], &sb[2], &sb[3], verbose);
1042 sb[1] &= 0x0f;
1043 }
1044
1045 block = ata_tf_read_block(&qc->result_tf, dev);
1046
1047
1048 sb[7] = 12;
1049 desc[0] = 0x00;
1050 desc[1] = 10;
1051
1052 desc[2] |= 0x80;
1053 desc[6] = block >> 40;
1054 desc[7] = block >> 32;
1055 desc[8] = block >> 24;
1056 desc[9] = block >> 16;
1057 desc[10] = block >> 8;
1058 desc[11] = block;
1059}
1060
1061static void ata_scsi_sdev_config(struct scsi_device *sdev)
1062{
1063 sdev->use_10_for_rw = 1;
1064 sdev->use_10_for_ms = 1;
1065 sdev->no_report_opcodes = 1;
1066 sdev->no_write_same = 1;
1067
1068
1069
1070
1071
1072
1073 sdev->max_device_blocked = 1;
1074}
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091static int atapi_drain_needed(struct request *rq)
1092{
1093 if (likely(rq->cmd_type != REQ_TYPE_BLOCK_PC))
1094 return 0;
1095
1096 if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_WRITE))
1097 return 0;
1098
1099 return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC;
1100}
1101
1102static int ata_scsi_dev_config(struct scsi_device *sdev,
1103 struct ata_device *dev)
1104{
1105 struct request_queue *q = sdev->request_queue;
1106
1107 if (!ata_id_has_unload(dev->id))
1108 dev->flags |= ATA_DFLAG_NO_UNLOAD;
1109
1110
1111 blk_queue_max_hw_sectors(q, dev->max_sectors);
1112
1113 if (dev->class == ATA_DEV_ATAPI) {
1114 void *buf;
1115
1116 sdev->sector_size = ATA_SECT_SIZE;
1117
1118
1119 blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1);
1120
1121
1122 buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL);
1123 if (!buf) {
1124 ata_dev_err(dev, "drain buffer allocation failed\n");
1125 return -ENOMEM;
1126 }
1127
1128 blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN);
1129 } else {
1130 sdev->sector_size = ata_id_logical_sector_size(dev->id);
1131 sdev->manage_start_stop = 1;
1132 }
1133
1134
1135
1136
1137
1138
1139
1140
1141 if (sdev->sector_size > PAGE_SIZE)
1142 ata_dev_warn(dev,
1143 "sector_size=%u > PAGE_SIZE, PIO may malfunction\n",
1144 sdev->sector_size);
1145
1146 blk_queue_update_dma_alignment(q, sdev->sector_size - 1);
1147
1148 if (dev->flags & ATA_DFLAG_AN)
1149 set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events);
1150
1151 if (dev->flags & ATA_DFLAG_NCQ) {
1152 int depth;
1153
1154 depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id));
1155 depth = min(ATA_MAX_QUEUE - 1, depth);
1156 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, depth);
1157 }
1158
1159 blk_queue_flush_queueable(q, false);
1160
1161 dev->sdev = sdev;
1162 return 0;
1163}
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177int ata_scsi_slave_config(struct scsi_device *sdev)
1178{
1179 struct ata_port *ap = ata_shost_to_port(sdev->host);
1180 struct ata_device *dev = __ata_scsi_find_dev(ap, sdev);
1181 int rc = 0;
1182
1183 ata_scsi_sdev_config(sdev);
1184
1185 if (dev)
1186 rc = ata_scsi_dev_config(sdev, dev);
1187
1188 return rc;
1189}
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205void ata_scsi_slave_destroy(struct scsi_device *sdev)
1206{
1207 struct ata_port *ap = ata_shost_to_port(sdev->host);
1208 struct request_queue *q = sdev->request_queue;
1209 unsigned long flags;
1210 struct ata_device *dev;
1211
1212 if (!ap->ops->error_handler)
1213 return;
1214
1215 spin_lock_irqsave(ap->lock, flags);
1216 dev = __ata_scsi_find_dev(ap, sdev);
1217 if (dev && dev->sdev) {
1218
1219 dev->sdev = NULL;
1220 dev->flags |= ATA_DFLAG_DETACH;
1221 ata_port_schedule_eh(ap);
1222 }
1223 spin_unlock_irqrestore(ap->lock, flags);
1224
1225 kfree(q->dma_drain_buffer);
1226 q->dma_drain_buffer = NULL;
1227 q->dma_drain_size = 0;
1228}
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1242 int queue_depth, int reason)
1243{
1244 struct ata_device *dev;
1245 unsigned long flags;
1246
1247 if (reason != SCSI_QDEPTH_DEFAULT)
1248 return -EOPNOTSUPP;
1249
1250 if (queue_depth < 1 || queue_depth == sdev->queue_depth)
1251 return sdev->queue_depth;
1252
1253 dev = ata_scsi_find_dev(ap, sdev);
1254 if (!dev || !ata_dev_enabled(dev))
1255 return sdev->queue_depth;
1256
1257
1258 spin_lock_irqsave(ap->lock, flags);
1259 dev->flags &= ~ATA_DFLAG_NCQ_OFF;
1260 if (queue_depth == 1 || !ata_ncq_enabled(dev)) {
1261 dev->flags |= ATA_DFLAG_NCQ_OFF;
1262 queue_depth = 1;
1263 }
1264 spin_unlock_irqrestore(ap->lock, flags);
1265
1266
1267 queue_depth = min(queue_depth, sdev->host->can_queue);
1268 queue_depth = min(queue_depth, ata_id_queue_depth(dev->id));
1269 queue_depth = min(queue_depth, ATA_MAX_QUEUE - 1);
1270
1271 if (sdev->queue_depth == queue_depth)
1272 return -EINVAL;
1273
1274 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, queue_depth);
1275 return queue_depth;
1276}
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth,
1295 int reason)
1296{
1297 struct ata_port *ap = ata_shost_to_port(sdev->host);
1298
1299 return __ata_change_queue_depth(ap, sdev, queue_depth, reason);
1300}
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
1318{
1319 struct scsi_cmnd *scmd = qc->scsicmd;
1320 struct ata_taskfile *tf = &qc->tf;
1321 const u8 *cdb = scmd->cmnd;
1322
1323 if (scmd->cmd_len < 5)
1324 goto invalid_fld;
1325
1326 tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
1327 tf->protocol = ATA_PROT_NODATA;
1328 if (cdb[1] & 0x1) {
1329 ;
1330 }
1331 if (cdb[4] & 0x2)
1332 goto invalid_fld;
1333 if (((cdb[4] >> 4) & 0xf) != 0)
1334 goto invalid_fld;
1335
1336 if (cdb[4] & 0x1) {
1337 tf->nsect = 1;
1338
1339 if (qc->dev->flags & ATA_DFLAG_LBA) {
1340 tf->flags |= ATA_TFLAG_LBA;
1341
1342 tf->lbah = 0x0;
1343 tf->lbam = 0x0;
1344 tf->lbal = 0x0;
1345 tf->device |= ATA_LBA;
1346 } else {
1347
1348 tf->lbal = 0x1;
1349 tf->lbam = 0x0;
1350 tf->lbah = 0x0;
1351 }
1352
1353 tf->command = ATA_CMD_VERIFY;
1354 } else {
1355
1356
1357
1358 if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) &&
1359 system_state == SYSTEM_POWER_OFF)
1360 goto skip;
1361
1362 if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) &&
1363 system_entering_hibernation())
1364 goto skip;
1365
1366
1367 tf->command = ATA_CMD_STANDBYNOW1;
1368 }
1369
1370
1371
1372
1373
1374
1375
1376
1377 return 0;
1378
1379 invalid_fld:
1380 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
1381
1382 return 1;
1383 skip:
1384 scmd->result = SAM_STAT_GOOD;
1385 return 1;
1386}
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc)
1403{
1404 struct ata_taskfile *tf = &qc->tf;
1405
1406 tf->flags |= ATA_TFLAG_DEVICE;
1407 tf->protocol = ATA_PROT_NODATA;
1408
1409 if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT)
1410 tf->command = ATA_CMD_FLUSH_EXT;
1411 else
1412 tf->command = ATA_CMD_FLUSH;
1413
1414
1415 qc->flags |= ATA_QCFLAG_IO;
1416
1417 return 0;
1418}
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
1431{
1432 u64 lba = 0;
1433 u32 len;
1434
1435 VPRINTK("six-byte command\n");
1436
1437 lba |= ((u64)(cdb[1] & 0x1f)) << 16;
1438 lba |= ((u64)cdb[2]) << 8;
1439 lba |= ((u64)cdb[3]);
1440
1441 len = cdb[4];
1442
1443 *plba = lba;
1444 *plen = len;
1445}
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
1458{
1459 u64 lba = 0;
1460 u32 len = 0;
1461
1462 VPRINTK("ten-byte command\n");
1463
1464 lba |= ((u64)cdb[2]) << 24;
1465 lba |= ((u64)cdb[3]) << 16;
1466 lba |= ((u64)cdb[4]) << 8;
1467 lba |= ((u64)cdb[5]);
1468
1469 len |= ((u32)cdb[7]) << 8;
1470 len |= ((u32)cdb[8]);
1471
1472 *plba = lba;
1473 *plen = len;
1474}
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
1487{
1488 u64 lba = 0;
1489 u32 len = 0;
1490
1491 VPRINTK("sixteen-byte command\n");
1492
1493 lba |= ((u64)cdb[2]) << 56;
1494 lba |= ((u64)cdb[3]) << 48;
1495 lba |= ((u64)cdb[4]) << 40;
1496 lba |= ((u64)cdb[5]) << 32;
1497 lba |= ((u64)cdb[6]) << 24;
1498 lba |= ((u64)cdb[7]) << 16;
1499 lba |= ((u64)cdb[8]) << 8;
1500 lba |= ((u64)cdb[9]);
1501
1502 len |= ((u32)cdb[10]) << 24;
1503 len |= ((u32)cdb[11]) << 16;
1504 len |= ((u32)cdb[12]) << 8;
1505 len |= ((u32)cdb[13]);
1506
1507 *plba = lba;
1508 *plen = len;
1509}
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc)
1524{
1525 struct scsi_cmnd *scmd = qc->scsicmd;
1526 struct ata_taskfile *tf = &qc->tf;
1527 struct ata_device *dev = qc->dev;
1528 u64 dev_sectors = qc->dev->n_sectors;
1529 const u8 *cdb = scmd->cmnd;
1530 u64 block;
1531 u32 n_block;
1532
1533 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
1534 tf->protocol = ATA_PROT_NODATA;
1535
1536 if (cdb[0] == VERIFY) {
1537 if (scmd->cmd_len < 10)
1538 goto invalid_fld;
1539 scsi_10_lba_len(cdb, &block, &n_block);
1540 } else if (cdb[0] == VERIFY_16) {
1541 if (scmd->cmd_len < 16)
1542 goto invalid_fld;
1543 scsi_16_lba_len(cdb, &block, &n_block);
1544 } else
1545 goto invalid_fld;
1546
1547 if (!n_block)
1548 goto nothing_to_do;
1549 if (block >= dev_sectors)
1550 goto out_of_range;
1551 if ((block + n_block) > dev_sectors)
1552 goto out_of_range;
1553
1554 if (dev->flags & ATA_DFLAG_LBA) {
1555 tf->flags |= ATA_TFLAG_LBA;
1556
1557 if (lba_28_ok(block, n_block)) {
1558
1559 tf->command = ATA_CMD_VERIFY;
1560 tf->device |= (block >> 24) & 0xf;
1561 } else if (lba_48_ok(block, n_block)) {
1562 if (!(dev->flags & ATA_DFLAG_LBA48))
1563 goto out_of_range;
1564
1565
1566 tf->flags |= ATA_TFLAG_LBA48;
1567 tf->command = ATA_CMD_VERIFY_EXT;
1568
1569 tf->hob_nsect = (n_block >> 8) & 0xff;
1570
1571 tf->hob_lbah = (block >> 40) & 0xff;
1572 tf->hob_lbam = (block >> 32) & 0xff;
1573 tf->hob_lbal = (block >> 24) & 0xff;
1574 } else
1575
1576 goto out_of_range;
1577
1578 tf->nsect = n_block & 0xff;
1579
1580 tf->lbah = (block >> 16) & 0xff;
1581 tf->lbam = (block >> 8) & 0xff;
1582 tf->lbal = block & 0xff;
1583
1584 tf->device |= ATA_LBA;
1585 } else {
1586
1587 u32 sect, head, cyl, track;
1588
1589 if (!lba_28_ok(block, n_block))
1590 goto out_of_range;
1591
1592
1593 track = (u32)block / dev->sectors;
1594 cyl = track / dev->heads;
1595 head = track % dev->heads;
1596 sect = (u32)block % dev->sectors + 1;
1597
1598 DPRINTK("block %u track %u cyl %u head %u sect %u\n",
1599 (u32)block, track, cyl, head, sect);
1600
1601
1602
1603
1604
1605 if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
1606 goto out_of_range;
1607
1608 tf->command = ATA_CMD_VERIFY;
1609 tf->nsect = n_block & 0xff;
1610 tf->lbal = sect;
1611 tf->lbam = cyl;
1612 tf->lbah = cyl >> 8;
1613 tf->device |= head;
1614 }
1615
1616 return 0;
1617
1618invalid_fld:
1619 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
1620
1621 return 1;
1622
1623out_of_range:
1624 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0);
1625
1626 return 1;
1627
1628nothing_to_do:
1629 scmd->result = SAM_STAT_GOOD;
1630 return 1;
1631}
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc)
1652{
1653 struct scsi_cmnd *scmd = qc->scsicmd;
1654 const u8 *cdb = scmd->cmnd;
1655 unsigned int tf_flags = 0;
1656 u64 block;
1657 u32 n_block;
1658 int rc;
1659
1660 if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16)
1661 tf_flags |= ATA_TFLAG_WRITE;
1662
1663
1664 switch (cdb[0]) {
1665 case READ_10:
1666 case WRITE_10:
1667 if (unlikely(scmd->cmd_len < 10))
1668 goto invalid_fld;
1669 scsi_10_lba_len(cdb, &block, &n_block);
1670 if (cdb[1] & (1 << 3))
1671 tf_flags |= ATA_TFLAG_FUA;
1672 break;
1673 case READ_6:
1674 case WRITE_6:
1675 if (unlikely(scmd->cmd_len < 6))
1676 goto invalid_fld;
1677 scsi_6_lba_len(cdb, &block, &n_block);
1678
1679
1680
1681
1682 if (!n_block)
1683 n_block = 256;
1684 break;
1685 case READ_16:
1686 case WRITE_16:
1687 if (unlikely(scmd->cmd_len < 16))
1688 goto invalid_fld;
1689 scsi_16_lba_len(cdb, &block, &n_block);
1690 if (cdb[1] & (1 << 3))
1691 tf_flags |= ATA_TFLAG_FUA;
1692 break;
1693 default:
1694 DPRINTK("no-byte command\n");
1695 goto invalid_fld;
1696 }
1697
1698
1699 if (!n_block)
1700
1701
1702
1703
1704
1705
1706
1707 goto nothing_to_do;
1708
1709 qc->flags |= ATA_QCFLAG_IO;
1710 qc->nbytes = n_block * scmd->device->sector_size;
1711
1712 rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags,
1713 qc->tag);
1714 if (likely(rc == 0))
1715 return 0;
1716
1717 if (rc == -ERANGE)
1718 goto out_of_range;
1719
1720invalid_fld:
1721 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
1722
1723 return 1;
1724
1725out_of_range:
1726 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0);
1727
1728 return 1;
1729
1730nothing_to_do:
1731 scmd->result = SAM_STAT_GOOD;
1732 return 1;
1733}
1734
1735static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
1736{
1737 struct ata_port *ap = qc->ap;
1738 struct scsi_cmnd *cmd = qc->scsicmd;
1739 u8 *cdb = cmd->cmnd;
1740 int need_sense = (qc->err_mask != 0);
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751 if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) &&
1752 ((cdb[2] & 0x20) || need_sense)) {
1753 ata_gen_passthru_sense(qc);
1754 } else {
1755 if (!need_sense) {
1756 cmd->result = SAM_STAT_GOOD;
1757 } else {
1758
1759
1760
1761
1762
1763
1764 ata_gen_ata_sense(qc);
1765 }
1766 }
1767
1768 if (need_sense && !ap->ops->error_handler)
1769 ata_dump_status(ap->print_id, &qc->result_tf);
1770
1771 qc->scsidone(cmd);
1772
1773 ata_qc_free(qc);
1774}
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd,
1803 ata_xlat_func_t xlat_func)
1804{
1805 struct ata_port *ap = dev->link->ap;
1806 struct ata_queued_cmd *qc;
1807 int rc;
1808
1809 VPRINTK("ENTER\n");
1810
1811 qc = ata_scsi_qc_new(dev, cmd);
1812 if (!qc)
1813 goto err_mem;
1814
1815
1816 if (cmd->sc_data_direction == DMA_FROM_DEVICE ||
1817 cmd->sc_data_direction == DMA_TO_DEVICE) {
1818 if (unlikely(scsi_bufflen(cmd) < 1)) {
1819 ata_dev_warn(dev, "WARNING: zero len r/w req\n");
1820 goto err_did;
1821 }
1822
1823 ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd));
1824
1825 qc->dma_dir = cmd->sc_data_direction;
1826 }
1827
1828 qc->complete_fn = ata_scsi_qc_complete;
1829
1830 if (xlat_func(qc))
1831 goto early_finish;
1832
1833 if (ap->ops->qc_defer) {
1834 if ((rc = ap->ops->qc_defer(qc)))
1835 goto defer;
1836 }
1837
1838
1839 ata_qc_issue(qc);
1840
1841 VPRINTK("EXIT\n");
1842 return 0;
1843
1844early_finish:
1845 ata_qc_free(qc);
1846 cmd->scsi_done(cmd);
1847 DPRINTK("EXIT - early finish (good or error)\n");
1848 return 0;
1849
1850err_did:
1851 ata_qc_free(qc);
1852 cmd->result = (DID_ERROR << 16);
1853 cmd->scsi_done(cmd);
1854err_mem:
1855 DPRINTK("EXIT - internal\n");
1856 return 0;
1857
1858defer:
1859 ata_qc_free(qc);
1860 DPRINTK("EXIT - defer\n");
1861 if (rc == ATA_DEFER_LINK)
1862 return SCSI_MLQUEUE_DEVICE_BUSY;
1863 else
1864 return SCSI_MLQUEUE_HOST_BUSY;
1865}
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in,
1882 unsigned long *flags)
1883{
1884 spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags);
1885
1886 memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE);
1887 if (copy_in)
1888 sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
1889 ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE);
1890 return ata_scsi_rbuf;
1891}
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out,
1906 unsigned long *flags)
1907{
1908 if (copy_out)
1909 sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
1910 ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE);
1911 spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags);
1912}
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929static void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
1930 unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf))
1931{
1932 u8 *rbuf;
1933 unsigned int rc;
1934 struct scsi_cmnd *cmd = args->cmd;
1935 unsigned long flags;
1936
1937 rbuf = ata_scsi_rbuf_get(cmd, false, &flags);
1938 rc = actor(args, rbuf);
1939 ata_scsi_rbuf_put(cmd, rc == 0, &flags);
1940
1941 if (rc == 0)
1942 cmd->result = SAM_STAT_GOOD;
1943 args->done(cmd);
1944}
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
1958{
1959 const u8 versions[] = {
1960 0x60,
1961
1962 0x03,
1963 0x20,
1964
1965 0x02,
1966 0x60
1967 };
1968 u8 hdr[] = {
1969 TYPE_DISK,
1970 0,
1971 0x5,
1972 2,
1973 95 - 4
1974 };
1975
1976 VPRINTK("ENTER\n");
1977
1978
1979 if (ata_id_removeable(args->id))
1980 hdr[1] |= (1 << 7);
1981
1982 memcpy(rbuf, hdr, sizeof(hdr));
1983 memcpy(&rbuf[8], "ATA ", 8);
1984 ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16);
1985 ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4);
1986
1987 if (rbuf[32] == 0 || rbuf[32] == ' ')
1988 memcpy(&rbuf[32], "n/a ", 4);
1989
1990 memcpy(rbuf + 59, versions, sizeof(versions));
1991
1992 return 0;
1993}
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf)
2006{
2007 const u8 pages[] = {
2008 0x00,
2009 0x80,
2010 0x83,
2011 0x89,
2012 0xb0,
2013 0xb1,
2014 0xb2,
2015 };
2016
2017 rbuf[3] = sizeof(pages);
2018 memcpy(rbuf + 4, pages, sizeof(pages));
2019 return 0;
2020}
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf)
2033{
2034 const u8 hdr[] = {
2035 0,
2036 0x80,
2037 0,
2038 ATA_ID_SERNO_LEN,
2039 };
2040
2041 memcpy(rbuf, hdr, sizeof(hdr));
2042 ata_id_string(args->id, (unsigned char *) &rbuf[4],
2043 ATA_ID_SERNO, ATA_ID_SERNO_LEN);
2044 return 0;
2045}
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf)
2061{
2062 const int sat_model_serial_desc_len = 68;
2063 int num;
2064
2065 rbuf[1] = 0x83;
2066 num = 4;
2067
2068
2069 rbuf[num + 0] = 2;
2070 rbuf[num + 3] = ATA_ID_SERNO_LEN;
2071 num += 4;
2072 ata_id_string(args->id, (unsigned char *) rbuf + num,
2073 ATA_ID_SERNO, ATA_ID_SERNO_LEN);
2074 num += ATA_ID_SERNO_LEN;
2075
2076
2077
2078 rbuf[num + 0] = 2;
2079 rbuf[num + 1] = 1;
2080 rbuf[num + 3] = sat_model_serial_desc_len;
2081 num += 4;
2082 memcpy(rbuf + num, "ATA ", 8);
2083 num += 8;
2084 ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD,
2085 ATA_ID_PROD_LEN);
2086 num += ATA_ID_PROD_LEN;
2087 ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO,
2088 ATA_ID_SERNO_LEN);
2089 num += ATA_ID_SERNO_LEN;
2090
2091 if (ata_id_has_wwn(args->id)) {
2092
2093
2094 rbuf[num + 0] = 1;
2095 rbuf[num + 1] = 3;
2096 rbuf[num + 3] = ATA_ID_WWN_LEN;
2097 num += 4;
2098 ata_id_string(args->id, (unsigned char *) rbuf + num,
2099 ATA_ID_WWN, ATA_ID_WWN_LEN);
2100 num += ATA_ID_WWN_LEN;
2101 }
2102 rbuf[3] = num - 4;
2103 return 0;
2104}
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf)
2117{
2118 struct ata_taskfile tf;
2119
2120 memset(&tf, 0, sizeof(tf));
2121
2122 rbuf[1] = 0x89;
2123 rbuf[2] = (0x238 >> 8);
2124 rbuf[3] = (0x238 & 0xff);
2125
2126 memcpy(&rbuf[8], "linux ", 8);
2127 memcpy(&rbuf[16], "libata ", 16);
2128 memcpy(&rbuf[32], DRV_VERSION, 4);
2129
2130
2131
2132 tf.command = ATA_DRDY;
2133 tf.lbal = 0x1;
2134 tf.nsect = 0x1;
2135
2136 ata_tf_to_fis(&tf, 0, 1, &rbuf[36]);
2137 rbuf[36] = 0x34;
2138
2139 rbuf[56] = ATA_CMD_ID_ATA;
2140
2141 memcpy(&rbuf[60], &args->id[0], 512);
2142 return 0;
2143}
2144
2145static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf)
2146{
2147 u16 min_io_sectors;
2148
2149 rbuf[1] = 0xb0;
2150 rbuf[3] = 0x3c;
2151
2152
2153
2154
2155
2156
2157
2158
2159 min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id);
2160 put_unaligned_be16(min_io_sectors, &rbuf[6]);
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171 if (ata_id_has_trim(args->id)) {
2172 put_unaligned_be64(65535 * 512 / 8, &rbuf[36]);
2173 put_unaligned_be32(1, &rbuf[28]);
2174 }
2175
2176 return 0;
2177}
2178
2179static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf)
2180{
2181 int form_factor = ata_id_form_factor(args->id);
2182 int media_rotation_rate = ata_id_rotation_rate(args->id);
2183
2184 rbuf[1] = 0xb1;
2185 rbuf[3] = 0x3c;
2186 rbuf[4] = media_rotation_rate >> 8;
2187 rbuf[5] = media_rotation_rate;
2188 rbuf[7] = form_factor;
2189
2190 return 0;
2191}
2192
2193static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf)
2194{
2195
2196 rbuf[1] = 0xb2;
2197 rbuf[3] = 0x4;
2198 rbuf[5] = 1 << 6;
2199
2200 return 0;
2201}
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214static unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf)
2215{
2216 VPRINTK("ENTER\n");
2217 return 0;
2218}
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233static void modecpy(u8 *dest, const u8 *src, int n, bool changeable)
2234{
2235 if (changeable) {
2236 memcpy(dest, src, 2);
2237 memset(dest + 2, 0, n - 2);
2238 } else {
2239 memcpy(dest, src, n);
2240 }
2241}
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable)
2257{
2258 modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable);
2259 if (changeable || ata_id_wcache_enabled(id))
2260 buf[2] |= (1 << 2);
2261 if (!changeable && !ata_id_rahead_enabled(id))
2262 buf[12] |= (1 << 5);
2263 return sizeof(def_cache_mpage);
2264}
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276static unsigned int ata_msense_ctl_mode(u8 *buf, bool changeable)
2277{
2278 modecpy(buf, def_control_mpage, sizeof(def_control_mpage), changeable);
2279 return sizeof(def_control_mpage);
2280}
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable)
2293{
2294 modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage),
2295 changeable);
2296 return sizeof(def_rw_recovery_mpage);
2297}
2298
2299
2300
2301
2302
2303static int ata_dev_supports_fua(u16 *id)
2304{
2305 unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1];
2306
2307 if (!libata_fua)
2308 return 0;
2309 if (!ata_id_has_fua(id))
2310 return 0;
2311
2312 ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model));
2313 ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw));
2314
2315 if (strcmp(model, "Maxtor"))
2316 return 1;
2317 if (strcmp(fw, "BANC1G10"))
2318 return 1;
2319
2320 return 0;
2321}
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf)
2336{
2337 struct ata_device *dev = args->dev;
2338 u8 *scsicmd = args->cmd->cmnd, *p = rbuf;
2339 const u8 sat_blk_desc[] = {
2340 0, 0, 0, 0,
2341 0,
2342 0, 0x2, 0x0
2343 };
2344 u8 pg, spg;
2345 unsigned int ebd, page_control, six_byte;
2346 u8 dpofua;
2347
2348 VPRINTK("ENTER\n");
2349
2350 six_byte = (scsicmd[0] == MODE_SENSE);
2351 ebd = !(scsicmd[1] & 0x8);
2352
2353
2354
2355
2356 page_control = scsicmd[2] >> 6;
2357 switch (page_control) {
2358 case 0:
2359 case 1:
2360 case 2:
2361 break;
2362 case 3:
2363 goto saving_not_supp;
2364 default:
2365 goto invalid_fld;
2366 }
2367
2368 if (six_byte)
2369 p += 4 + (ebd ? 8 : 0);
2370 else
2371 p += 8 + (ebd ? 8 : 0);
2372
2373 pg = scsicmd[2] & 0x3f;
2374 spg = scsicmd[3];
2375
2376
2377
2378
2379 if (spg && (spg != ALL_SUB_MPAGES))
2380 goto invalid_fld;
2381
2382 switch(pg) {
2383 case RW_RECOVERY_MPAGE:
2384 p += ata_msense_rw_recovery(p, page_control == 1);
2385 break;
2386
2387 case CACHE_MPAGE:
2388 p += ata_msense_caching(args->id, p, page_control == 1);
2389 break;
2390
2391 case CONTROL_MPAGE:
2392 p += ata_msense_ctl_mode(p, page_control == 1);
2393 break;
2394
2395 case ALL_MPAGES:
2396 p += ata_msense_rw_recovery(p, page_control == 1);
2397 p += ata_msense_caching(args->id, p, page_control == 1);
2398 p += ata_msense_ctl_mode(p, page_control == 1);
2399 break;
2400
2401 default:
2402 goto invalid_fld;
2403 }
2404
2405 dpofua = 0;
2406 if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) &&
2407 (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count))
2408 dpofua = 1 << 4;
2409
2410 if (six_byte) {
2411 rbuf[0] = p - rbuf - 1;
2412 rbuf[2] |= dpofua;
2413 if (ebd) {
2414 rbuf[3] = sizeof(sat_blk_desc);
2415 memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc));
2416 }
2417 } else {
2418 unsigned int output_len = p - rbuf - 2;
2419
2420 rbuf[0] = output_len >> 8;
2421 rbuf[1] = output_len;
2422 rbuf[3] |= dpofua;
2423 if (ebd) {
2424 rbuf[7] = sizeof(sat_blk_desc);
2425 memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc));
2426 }
2427 }
2428 return 0;
2429
2430invalid_fld:
2431 ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0);
2432
2433 return 1;
2434
2435saving_not_supp:
2436 ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0);
2437
2438 return 1;
2439}
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf)
2452{
2453 struct ata_device *dev = args->dev;
2454 u64 last_lba = dev->n_sectors - 1;
2455 u32 sector_size;
2456 u8 log2_per_phys;
2457 u16 lowest_aligned;
2458
2459 sector_size = ata_id_logical_sector_size(dev->id);
2460 log2_per_phys = ata_id_log2_per_physical_sector(dev->id);
2461 lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys);
2462
2463 VPRINTK("ENTER\n");
2464
2465 if (args->cmd->cmnd[0] == READ_CAPACITY) {
2466 if (last_lba >= 0xffffffffULL)
2467 last_lba = 0xffffffff;
2468
2469
2470 rbuf[0] = last_lba >> (8 * 3);
2471 rbuf[1] = last_lba >> (8 * 2);
2472 rbuf[2] = last_lba >> (8 * 1);
2473 rbuf[3] = last_lba;
2474
2475
2476 rbuf[4] = sector_size >> (8 * 3);
2477 rbuf[5] = sector_size >> (8 * 2);
2478 rbuf[6] = sector_size >> (8 * 1);
2479 rbuf[7] = sector_size;
2480 } else {
2481
2482 rbuf[0] = last_lba >> (8 * 7);
2483 rbuf[1] = last_lba >> (8 * 6);
2484 rbuf[2] = last_lba >> (8 * 5);
2485 rbuf[3] = last_lba >> (8 * 4);
2486 rbuf[4] = last_lba >> (8 * 3);
2487 rbuf[5] = last_lba >> (8 * 2);
2488 rbuf[6] = last_lba >> (8 * 1);
2489 rbuf[7] = last_lba;
2490
2491
2492 rbuf[ 8] = sector_size >> (8 * 3);
2493 rbuf[ 9] = sector_size >> (8 * 2);
2494 rbuf[10] = sector_size >> (8 * 1);
2495 rbuf[11] = sector_size;
2496
2497 rbuf[12] = 0;
2498 rbuf[13] = log2_per_phys;
2499 rbuf[14] = (lowest_aligned >> 8) & 0x3f;
2500 rbuf[15] = lowest_aligned;
2501
2502 if (ata_id_has_trim(args->id)) {
2503 rbuf[14] |= 0x80;
2504
2505 if (ata_id_has_zero_after_trim(args->id))
2506 rbuf[14] |= 0x40;
2507 }
2508 }
2509
2510 return 0;
2511}
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf)
2524{
2525 VPRINTK("ENTER\n");
2526 rbuf[3] = 8;
2527
2528 return 0;
2529}
2530
2531static void atapi_sense_complete(struct ata_queued_cmd *qc)
2532{
2533 if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) {
2534
2535
2536
2537
2538
2539 ata_gen_passthru_sense(qc);
2540 }
2541
2542 qc->scsidone(qc->scsicmd);
2543 ata_qc_free(qc);
2544}
2545
2546
2547static inline int ata_pio_use_silly(struct ata_port *ap)
2548{
2549 return (ap->flags & ATA_FLAG_PIO_DMA);
2550}
2551
2552static void atapi_request_sense(struct ata_queued_cmd *qc)
2553{
2554 struct ata_port *ap = qc->ap;
2555 struct scsi_cmnd *cmd = qc->scsicmd;
2556
2557 DPRINTK("ATAPI request sense\n");
2558
2559
2560 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2561
2562#ifdef CONFIG_ATA_SFF
2563 if (ap->ops->sff_tf_read)
2564 ap->ops->sff_tf_read(ap, &qc->tf);
2565#endif
2566
2567
2568 cmd->sense_buffer[0] = 0x70;
2569 cmd->sense_buffer[2] = qc->tf.feature >> 4;
2570
2571 ata_qc_reinit(qc);
2572
2573
2574 sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
2575 ata_sg_init(qc, &qc->sgent, 1);
2576 qc->dma_dir = DMA_FROM_DEVICE;
2577
2578 memset(&qc->cdb, 0, qc->dev->cdb_len);
2579 qc->cdb[0] = REQUEST_SENSE;
2580 qc->cdb[4] = SCSI_SENSE_BUFFERSIZE;
2581
2582 qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
2583 qc->tf.command = ATA_CMD_PACKET;
2584
2585 if (ata_pio_use_silly(ap)) {
2586 qc->tf.protocol = ATAPI_PROT_DMA;
2587 qc->tf.feature |= ATAPI_PKT_DMA;
2588 } else {
2589 qc->tf.protocol = ATAPI_PROT_PIO;
2590 qc->tf.lbam = SCSI_SENSE_BUFFERSIZE;
2591 qc->tf.lbah = 0;
2592 }
2593 qc->nbytes = SCSI_SENSE_BUFFERSIZE;
2594
2595 qc->complete_fn = atapi_sense_complete;
2596
2597 ata_qc_issue(qc);
2598
2599 DPRINTK("EXIT\n");
2600}
2601
2602static void atapi_qc_complete(struct ata_queued_cmd *qc)
2603{
2604 struct scsi_cmnd *cmd = qc->scsicmd;
2605 unsigned int err_mask = qc->err_mask;
2606
2607 VPRINTK("ENTER, err_mask 0x%X\n", err_mask);
2608
2609
2610 if (unlikely(qc->ap->ops->error_handler &&
2611 (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) {
2612
2613 if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) {
2614
2615
2616
2617
2618
2619 ata_gen_passthru_sense(qc);
2620 }
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635 if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev)
2636 qc->dev->sdev->locked = 0;
2637
2638 qc->scsicmd->result = SAM_STAT_CHECK_CONDITION;
2639 qc->scsidone(cmd);
2640 ata_qc_free(qc);
2641 return;
2642 }
2643
2644
2645 if (unlikely(err_mask & AC_ERR_DEV)) {
2646 cmd->result = SAM_STAT_CHECK_CONDITION;
2647 atapi_request_sense(qc);
2648 return;
2649 } else if (unlikely(err_mask)) {
2650
2651
2652
2653
2654
2655 ata_gen_passthru_sense(qc);
2656 } else {
2657 u8 *scsicmd = cmd->cmnd;
2658
2659 if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) {
2660 unsigned long flags;
2661 u8 *buf;
2662
2663 buf = ata_scsi_rbuf_get(cmd, true, &flags);
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673 if (buf[2] == 0) {
2674 buf[2] = 0x5;
2675 buf[3] = 0x32;
2676 }
2677
2678 ata_scsi_rbuf_put(cmd, true, &flags);
2679 }
2680
2681 cmd->result = SAM_STAT_GOOD;
2682 }
2683
2684 qc->scsidone(cmd);
2685 ata_qc_free(qc);
2686}
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
2698{
2699 struct scsi_cmnd *scmd = qc->scsicmd;
2700 struct ata_device *dev = qc->dev;
2701 int nodata = (scmd->sc_data_direction == DMA_NONE);
2702 int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO);
2703 unsigned int nbytes;
2704
2705 memset(qc->cdb, 0, dev->cdb_len);
2706 memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len);
2707
2708 qc->complete_fn = atapi_qc_complete;
2709
2710 qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
2711 if (scmd->sc_data_direction == DMA_TO_DEVICE) {
2712 qc->tf.flags |= ATA_TFLAG_WRITE;
2713 DPRINTK("direction: write\n");
2714 }
2715
2716 qc->tf.command = ATA_CMD_PACKET;
2717 ata_qc_set_pc_nbytes(qc);
2718
2719
2720 if (!nodata && !using_pio && atapi_check_dma(qc))
2721 using_pio = 1;
2722
2723
2724
2725
2726
2727
2728 nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024);
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754 if (nbytes & 0x1)
2755 nbytes++;
2756
2757 qc->tf.lbam = (nbytes & 0xFF);
2758 qc->tf.lbah = (nbytes >> 8);
2759
2760 if (nodata)
2761 qc->tf.protocol = ATAPI_PROT_NODATA;
2762 else if (using_pio)
2763 qc->tf.protocol = ATAPI_PROT_PIO;
2764 else {
2765
2766 qc->tf.protocol = ATAPI_PROT_DMA;
2767 qc->tf.feature |= ATAPI_PKT_DMA;
2768
2769 if ((dev->flags & ATA_DFLAG_DMADIR) &&
2770 (scmd->sc_data_direction != DMA_TO_DEVICE))
2771
2772 qc->tf.feature |= ATAPI_DMADIR;
2773 }
2774
2775
2776
2777
2778 return 0;
2779}
2780
2781static struct ata_device *ata_find_dev(struct ata_port *ap, int devno)
2782{
2783 if (!sata_pmp_attached(ap)) {
2784 if (likely(devno < ata_link_max_devices(&ap->link)))
2785 return &ap->link.device[devno];
2786 } else {
2787 if (likely(devno < ap->nr_pmp_links))
2788 return &ap->pmp_link[devno].device[0];
2789 }
2790
2791 return NULL;
2792}
2793
2794static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap,
2795 const struct scsi_device *scsidev)
2796{
2797 int devno;
2798
2799
2800 if (!sata_pmp_attached(ap)) {
2801 if (unlikely(scsidev->channel || scsidev->lun))
2802 return NULL;
2803 devno = scsidev->id;
2804 } else {
2805 if (unlikely(scsidev->id || scsidev->lun))
2806 return NULL;
2807 devno = scsidev->channel;
2808 }
2809
2810 return ata_find_dev(ap, devno);
2811}
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829static struct ata_device *
2830ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev)
2831{
2832 struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev);
2833
2834 if (unlikely(!dev || !ata_dev_enabled(dev)))
2835 return NULL;
2836
2837 return dev;
2838}
2839
2840
2841
2842
2843
2844
2845
2846
2847static u8
2848ata_scsi_map_proto(u8 byte1)
2849{
2850 switch((byte1 & 0x1e) >> 1) {
2851 case 3:
2852 return ATA_PROT_NODATA;
2853
2854 case 6:
2855 case 10:
2856 case 11:
2857 return ATA_PROT_DMA;
2858
2859 case 4:
2860 case 5:
2861 return ATA_PROT_PIO;
2862
2863 case 0:
2864 case 1:
2865 case 8:
2866 case 9:
2867 case 7:
2868 case 12:
2869 case 15:
2870 default:
2871 break;
2872 }
2873
2874 return ATA_PROT_UNKNOWN;
2875}
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
2887{
2888 struct ata_taskfile *tf = &(qc->tf);
2889 struct scsi_cmnd *scmd = qc->scsicmd;
2890 struct ata_device *dev = qc->dev;
2891 const u8 *cdb = scmd->cmnd;
2892
2893 if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN)
2894 goto invalid_fld;
2895
2896
2897
2898
2899
2900 if (cdb[0] == ATA_16) {
2901
2902
2903
2904
2905
2906 if (cdb[1] & 0x01) {
2907 tf->hob_feature = cdb[3];
2908 tf->hob_nsect = cdb[5];
2909 tf->hob_lbal = cdb[7];
2910 tf->hob_lbam = cdb[9];
2911 tf->hob_lbah = cdb[11];
2912 tf->flags |= ATA_TFLAG_LBA48;
2913 } else
2914 tf->flags &= ~ATA_TFLAG_LBA48;
2915
2916
2917
2918
2919 tf->feature = cdb[4];
2920 tf->nsect = cdb[6];
2921 tf->lbal = cdb[8];
2922 tf->lbam = cdb[10];
2923 tf->lbah = cdb[12];
2924 tf->device = cdb[13];
2925 tf->command = cdb[14];
2926 } else {
2927
2928
2929
2930 tf->flags &= ~ATA_TFLAG_LBA48;
2931
2932 tf->feature = cdb[3];
2933 tf->nsect = cdb[4];
2934 tf->lbal = cdb[5];
2935 tf->lbam = cdb[6];
2936 tf->lbah = cdb[7];
2937 tf->device = cdb[8];
2938 tf->command = cdb[9];
2939 }
2940
2941
2942 tf->device = dev->devno ?
2943 tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1;
2944
2945 switch (tf->command) {
2946
2947 case ATA_CMD_READ_LONG:
2948 case ATA_CMD_READ_LONG_ONCE:
2949 case ATA_CMD_WRITE_LONG:
2950 case ATA_CMD_WRITE_LONG_ONCE:
2951 if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1)
2952 goto invalid_fld;
2953 qc->sect_size = scsi_bufflen(scmd);
2954 break;
2955
2956
2957 case ATA_CMD_CFA_WRITE_NE:
2958 case ATA_CMD_CFA_TRANS_SECT:
2959 case ATA_CMD_CFA_WRITE_MULT_NE:
2960
2961 case ATA_CMD_READ:
2962 case ATA_CMD_READ_EXT:
2963 case ATA_CMD_READ_QUEUED:
2964
2965 case ATA_CMD_FPDMA_READ:
2966 case ATA_CMD_READ_MULTI:
2967 case ATA_CMD_READ_MULTI_EXT:
2968 case ATA_CMD_PIO_READ:
2969 case ATA_CMD_PIO_READ_EXT:
2970 case ATA_CMD_READ_STREAM_DMA_EXT:
2971 case ATA_CMD_READ_STREAM_EXT:
2972 case ATA_CMD_VERIFY:
2973 case ATA_CMD_VERIFY_EXT:
2974 case ATA_CMD_WRITE:
2975 case ATA_CMD_WRITE_EXT:
2976 case ATA_CMD_WRITE_FUA_EXT:
2977 case ATA_CMD_WRITE_QUEUED:
2978 case ATA_CMD_WRITE_QUEUED_FUA_EXT:
2979 case ATA_CMD_FPDMA_WRITE:
2980 case ATA_CMD_WRITE_MULTI:
2981 case ATA_CMD_WRITE_MULTI_EXT:
2982 case ATA_CMD_WRITE_MULTI_FUA_EXT:
2983 case ATA_CMD_PIO_WRITE:
2984 case ATA_CMD_PIO_WRITE_EXT:
2985 case ATA_CMD_WRITE_STREAM_DMA_EXT:
2986 case ATA_CMD_WRITE_STREAM_EXT:
2987 qc->sect_size = scmd->device->sector_size;
2988 break;
2989
2990
2991 default:
2992 qc->sect_size = ATA_SECT_SIZE;
2993 }
2994
2995
2996
2997
2998
2999
3000 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
3001 if (scmd->sc_data_direction == DMA_TO_DEVICE)
3002 tf->flags |= ATA_TFLAG_WRITE;
3003
3004 qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET;
3005
3006
3007
3008
3009
3010
3011
3012 ata_qc_set_pc_nbytes(qc);
3013
3014
3015 if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0)
3016 goto invalid_fld;
3017
3018
3019 if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf))
3020 goto invalid_fld;
3021
3022 if (is_multi_taskfile(tf)) {
3023 unsigned int multi_count = 1 << (cdb[1] >> 5);
3024
3025
3026
3027
3028 if (multi_count != dev->multi_count)
3029 ata_dev_warn(dev, "invalid multi_count %u ignored\n",
3030 multi_count);
3031 }
3032
3033
3034
3035
3036
3037
3038
3039
3040 if (tf->command == ATA_CMD_SET_FEATURES &&
3041 tf->feature == SETFEATURES_XFER)
3042 goto invalid_fld;
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059 if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm)
3060 goto invalid_fld;
3061
3062 return 0;
3063
3064 invalid_fld:
3065 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00);
3066
3067 return 1;
3068}
3069
3070static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc)
3071{
3072 struct ata_taskfile *tf = &qc->tf;
3073 struct scsi_cmnd *scmd = qc->scsicmd;
3074 struct ata_device *dev = qc->dev;
3075 const u8 *cdb = scmd->cmnd;
3076 u64 block;
3077 u32 n_block;
3078 u32 size;
3079 void *buf;
3080
3081
3082 if (unlikely(!dev->dma_mode))
3083 goto invalid_fld;
3084
3085 if (unlikely(scmd->cmd_len < 16))
3086 goto invalid_fld;
3087 scsi_16_lba_len(cdb, &block, &n_block);
3088
3089
3090 if (unlikely(!(cdb[1] & 0x8)))
3091 goto invalid_fld;
3092
3093
3094
3095
3096
3097 if (!scsi_sg_count(scmd))
3098 goto invalid_fld;
3099
3100 buf = page_address(sg_page(scsi_sglist(scmd)));
3101 size = ata_set_lba_range_entries(buf, 512, block, n_block);
3102
3103 tf->protocol = ATA_PROT_DMA;
3104 tf->hob_feature = 0;
3105 tf->feature = ATA_DSM_TRIM;
3106 tf->hob_nsect = (size / 512) >> 8;
3107 tf->nsect = size / 512;
3108 tf->command = ATA_CMD_DSM;
3109 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 |
3110 ATA_TFLAG_WRITE;
3111
3112 ata_qc_set_pc_nbytes(qc);
3113
3114 return 0;
3115
3116 invalid_fld:
3117 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00);
3118
3119 return 1;
3120}
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133static int ata_mselect_caching(struct ata_queued_cmd *qc,
3134 const u8 *buf, int len)
3135{
3136 struct ata_taskfile *tf = &qc->tf;
3137 struct ata_device *dev = qc->dev;
3138 char mpage[CACHE_MPAGE_LEN];
3139 u8 wce;
3140
3141
3142
3143
3144
3145
3146 if (len != CACHE_MPAGE_LEN - 2)
3147 return -EINVAL;
3148
3149 wce = buf[0] & (1 << 2);
3150
3151
3152
3153
3154 ata_msense_caching(dev->id, mpage, false);
3155 mpage[2] &= ~(1 << 2);
3156 mpage[2] |= wce;
3157 if (memcmp(mpage + 2, buf, CACHE_MPAGE_LEN - 2) != 0)
3158 return -EINVAL;
3159
3160 tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
3161 tf->protocol = ATA_PROT_NODATA;
3162 tf->nsect = 0;
3163 tf->command = ATA_CMD_SET_FEATURES;
3164 tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF;
3165 return 0;
3166}
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc)
3180{
3181 struct scsi_cmnd *scmd = qc->scsicmd;
3182 const u8 *cdb = scmd->cmnd;
3183 const u8 *p;
3184 u8 pg, spg;
3185 unsigned six_byte, pg_len, hdr_len, bd_len;
3186 int len;
3187
3188 VPRINTK("ENTER\n");
3189
3190 six_byte = (cdb[0] == MODE_SELECT);
3191 if (six_byte) {
3192 if (scmd->cmd_len < 5)
3193 goto invalid_fld;
3194
3195 len = cdb[4];
3196 hdr_len = 4;
3197 } else {
3198 if (scmd->cmd_len < 9)
3199 goto invalid_fld;
3200
3201 len = (cdb[7] << 8) + cdb[8];
3202 hdr_len = 8;
3203 }
3204
3205
3206 if ((cdb[1] & 0x11) != 0x10)
3207 goto invalid_fld;
3208
3209
3210 if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len)
3211 goto invalid_param_len;
3212
3213 p = page_address(sg_page(scsi_sglist(scmd)));
3214
3215
3216 if (len < hdr_len)
3217 goto invalid_param_len;
3218
3219 if (six_byte)
3220 bd_len = p[3];
3221 else
3222 bd_len = (p[6] << 8) + p[7];
3223
3224 len -= hdr_len;
3225 p += hdr_len;
3226 if (len < bd_len)
3227 goto invalid_param_len;
3228 if (bd_len != 0 && bd_len != 8)
3229 goto invalid_param;
3230
3231 len -= bd_len;
3232 p += bd_len;
3233 if (len == 0)
3234 goto skip;
3235
3236
3237 pg = p[0] & 0x3f;
3238 if (p[0] & 0x40) {
3239 if (len < 4)
3240 goto invalid_param_len;
3241
3242 spg = p[1];
3243 pg_len = (p[2] << 8) | p[3];
3244 p += 4;
3245 len -= 4;
3246 } else {
3247 if (len < 2)
3248 goto invalid_param_len;
3249
3250 spg = 0;
3251 pg_len = p[1];
3252 p += 2;
3253 len -= 2;
3254 }
3255
3256
3257
3258
3259
3260 if (spg && (spg != ALL_SUB_MPAGES))
3261 goto invalid_param;
3262 if (pg_len > len)
3263 goto invalid_param_len;
3264
3265 switch (pg) {
3266 case CACHE_MPAGE:
3267 if (ata_mselect_caching(qc, p, pg_len) < 0)
3268 goto invalid_param;
3269 break;
3270
3271 default:
3272 goto invalid_param;
3273 }
3274
3275
3276
3277
3278
3279 if (len > pg_len)
3280 goto invalid_param;
3281
3282 return 0;
3283
3284 invalid_fld:
3285
3286 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
3287 return 1;
3288
3289 invalid_param:
3290
3291 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x26, 0x0);
3292 return 1;
3293
3294 invalid_param_len:
3295
3296 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x1a, 0x0);
3297 return 1;
3298
3299 skip:
3300 scmd->result = SAM_STAT_GOOD;
3301 return 1;
3302}
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
3317{
3318 switch (cmd) {
3319 case READ_6:
3320 case READ_10:
3321 case READ_16:
3322
3323 case WRITE_6:
3324 case WRITE_10:
3325 case WRITE_16:
3326 return ata_scsi_rw_xlat;
3327
3328 case WRITE_SAME_16:
3329 return ata_scsi_write_same_xlat;
3330
3331 case SYNCHRONIZE_CACHE:
3332 if (ata_try_flush_cache(dev))
3333 return ata_scsi_flush_xlat;
3334 break;
3335
3336 case VERIFY:
3337 case VERIFY_16:
3338 return ata_scsi_verify_xlat;
3339
3340 case ATA_12:
3341 case ATA_16:
3342 return ata_scsi_pass_thru;
3343
3344 case MODE_SELECT:
3345 case MODE_SELECT_10:
3346 return ata_scsi_mode_select_xlat;
3347 break;
3348
3349 case START_STOP:
3350 return ata_scsi_start_stop_xlat;
3351 }
3352
3353 return NULL;
3354}
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364static inline void ata_scsi_dump_cdb(struct ata_port *ap,
3365 struct scsi_cmnd *cmd)
3366{
3367#ifdef ATA_DEBUG
3368 struct scsi_device *scsidev = cmd->device;
3369 u8 *scsicmd = cmd->cmnd;
3370
3371 DPRINTK("CDB (%u:%d,%d,%d) %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
3372 ap->print_id,
3373 scsidev->channel, scsidev->id, scsidev->lun,
3374 scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3],
3375 scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7],
3376 scsicmd[8]);
3377#endif
3378}
3379
3380static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd,
3381 struct ata_device *dev)
3382{
3383 u8 scsi_op = scmd->cmnd[0];
3384 ata_xlat_func_t xlat_func;
3385 int rc = 0;
3386
3387 if (dev->class == ATA_DEV_ATA) {
3388 if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len))
3389 goto bad_cdb_len;
3390
3391 xlat_func = ata_get_xlat_func(dev, scsi_op);
3392 } else {
3393 if (unlikely(!scmd->cmd_len))
3394 goto bad_cdb_len;
3395
3396 xlat_func = NULL;
3397 if (likely((scsi_op != ATA_16) || !atapi_passthru16)) {
3398
3399 int len = COMMAND_SIZE(scsi_op);
3400 if (unlikely(len > scmd->cmd_len || len > dev->cdb_len))
3401 goto bad_cdb_len;
3402
3403 xlat_func = atapi_xlat;
3404 } else {
3405
3406 if (unlikely(scmd->cmd_len > 16))
3407 goto bad_cdb_len;
3408
3409 xlat_func = ata_get_xlat_func(dev, scsi_op);
3410 }
3411 }
3412
3413 if (xlat_func)
3414 rc = ata_scsi_translate(dev, scmd, xlat_func);
3415 else
3416 ata_scsi_simulate(dev, scmd);
3417
3418 return rc;
3419
3420 bad_cdb_len:
3421 DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n",
3422 scmd->cmd_len, scsi_op, dev->cdb_len);
3423 scmd->result = DID_ERROR << 16;
3424 scmd->scsi_done(scmd);
3425 return 0;
3426}
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd)
3448{
3449 struct ata_port *ap;
3450 struct ata_device *dev;
3451 struct scsi_device *scsidev = cmd->device;
3452 int rc = 0;
3453 unsigned long irq_flags;
3454
3455 ap = ata_shost_to_port(shost);
3456
3457 spin_lock_irqsave(ap->lock, irq_flags);
3458
3459 ata_scsi_dump_cdb(ap, cmd);
3460
3461 dev = ata_scsi_find_dev(ap, scsidev);
3462 if (likely(dev))
3463 rc = __ata_scsi_queuecmd(cmd, dev);
3464 else {
3465 cmd->result = (DID_BAD_TARGET << 16);
3466 cmd->scsi_done(cmd);
3467 }
3468
3469 spin_unlock_irqrestore(ap->lock, irq_flags);
3470
3471 return rc;
3472}
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd)
3487{
3488 struct ata_scsi_args args;
3489 const u8 *scsicmd = cmd->cmnd;
3490 u8 tmp8;
3491
3492 args.dev = dev;
3493 args.id = dev->id;
3494 args.cmd = cmd;
3495 args.done = cmd->scsi_done;
3496
3497 switch(scsicmd[0]) {
3498
3499 case FORMAT_UNIT:
3500 ata_scsi_invalid_field(cmd);
3501 break;
3502
3503 case INQUIRY:
3504 if (scsicmd[1] & 2)
3505 ata_scsi_invalid_field(cmd);
3506 else if ((scsicmd[1] & 1) == 0)
3507 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std);
3508 else switch (scsicmd[2]) {
3509 case 0x00:
3510 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00);
3511 break;
3512 case 0x80:
3513 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80);
3514 break;
3515 case 0x83:
3516 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83);
3517 break;
3518 case 0x89:
3519 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89);
3520 break;
3521 case 0xb0:
3522 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0);
3523 break;
3524 case 0xb1:
3525 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1);
3526 break;
3527 case 0xb2:
3528 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2);
3529 break;
3530 default:
3531 ata_scsi_invalid_field(cmd);
3532 break;
3533 }
3534 break;
3535
3536 case MODE_SENSE:
3537 case MODE_SENSE_10:
3538 ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense);
3539 break;
3540
3541 case READ_CAPACITY:
3542 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
3543 break;
3544
3545 case SERVICE_ACTION_IN:
3546 if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16)
3547 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
3548 else
3549 ata_scsi_invalid_field(cmd);
3550 break;
3551
3552 case REPORT_LUNS:
3553 ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns);
3554 break;
3555
3556 case REQUEST_SENSE:
3557 ata_scsi_set_sense(cmd, 0, 0, 0);
3558 cmd->result = (DRIVER_SENSE << 24);
3559 cmd->scsi_done(cmd);
3560 break;
3561
3562
3563
3564
3565 case SYNCHRONIZE_CACHE:
3566
3567
3568
3569 case REZERO_UNIT:
3570 case SEEK_6:
3571 case SEEK_10:
3572 case TEST_UNIT_READY:
3573 ata_scsi_rbuf_fill(&args, ata_scsiop_noop);
3574 break;
3575
3576 case SEND_DIAGNOSTIC:
3577 tmp8 = scsicmd[1] & ~(1 << 3);
3578 if ((tmp8 == 0x4) && (!scsicmd[3]) && (!scsicmd[4]))
3579 ata_scsi_rbuf_fill(&args, ata_scsiop_noop);
3580 else
3581 ata_scsi_invalid_field(cmd);
3582 break;
3583
3584
3585 default:
3586 ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0);
3587
3588 cmd->scsi_done(cmd);
3589 break;
3590 }
3591}
3592
3593int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht)
3594{
3595 int i, rc;
3596
3597 for (i = 0; i < host->n_ports; i++) {
3598 struct ata_port *ap = host->ports[i];
3599 struct Scsi_Host *shost;
3600
3601 rc = -ENOMEM;
3602 shost = scsi_host_alloc(sht, sizeof(struct ata_port *));
3603 if (!shost)
3604 goto err_alloc;
3605
3606 shost->eh_noresume = 1;
3607 *(struct ata_port **)&shost->hostdata[0] = ap;
3608 ap->scsi_host = shost;
3609
3610 shost->transportt = ata_scsi_transport_template;
3611 shost->unique_id = ap->print_id;
3612 shost->max_id = 16;
3613 shost->max_lun = 1;
3614 shost->max_channel = 1;
3615 shost->max_cmd_len = 16;
3616
3617
3618
3619
3620
3621
3622 shost->max_host_blocked = 1;
3623
3624 rc = scsi_add_host_with_dma(ap->scsi_host,
3625 &ap->tdev, ap->host->dev);
3626 if (rc)
3627 goto err_add;
3628 }
3629
3630 return 0;
3631
3632 err_add:
3633 scsi_host_put(host->ports[i]->scsi_host);
3634 err_alloc:
3635 while (--i >= 0) {
3636 struct Scsi_Host *shost = host->ports[i]->scsi_host;
3637
3638 scsi_remove_host(shost);
3639 scsi_host_put(shost);
3640 }
3641 return rc;
3642}
3643
3644void ata_scsi_scan_host(struct ata_port *ap, int sync)
3645{
3646 int tries = 5;
3647 struct ata_device *last_failed_dev = NULL;
3648 struct ata_link *link;
3649 struct ata_device *dev;
3650
3651 repeat:
3652 ata_for_each_link(link, ap, EDGE) {
3653 ata_for_each_dev(dev, link, ENABLED) {
3654 struct scsi_device *sdev;
3655 int channel = 0, id = 0;
3656
3657 if (dev->sdev)
3658 continue;
3659
3660 if (ata_is_host_link(link))
3661 id = dev->devno;
3662 else
3663 channel = link->pmp;
3664
3665 sdev = __scsi_add_device(ap->scsi_host, channel, id, 0,
3666 NULL);
3667 if (!IS_ERR(sdev)) {
3668 dev->sdev = sdev;
3669 scsi_device_put(sdev);
3670 if (zpodd_dev_enabled(dev))
3671 dev_pm_qos_expose_flags(
3672 &sdev->sdev_gendev, 0);
3673 } else {
3674 dev->sdev = NULL;
3675 }
3676 }
3677 }
3678
3679
3680
3681
3682
3683 ata_for_each_link(link, ap, EDGE) {
3684 ata_for_each_dev(dev, link, ENABLED) {
3685 if (!dev->sdev)
3686 goto exit_loop;
3687 }
3688 }
3689 exit_loop:
3690 if (!link)
3691 return;
3692
3693
3694 if (sync) {
3695
3696
3697
3698 if (dev != last_failed_dev) {
3699 msleep(100);
3700 last_failed_dev = dev;
3701 goto repeat;
3702 }
3703
3704
3705
3706
3707 if (--tries) {
3708 msleep(100);
3709 goto repeat;
3710 }
3711
3712 ata_port_err(ap,
3713 "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n");
3714 }
3715
3716 queue_delayed_work(system_long_wq, &ap->hotplug_task,
3717 round_jiffies_relative(HZ));
3718}
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735int ata_scsi_offline_dev(struct ata_device *dev)
3736{
3737 if (dev->sdev) {
3738 scsi_device_set_state(dev->sdev, SDEV_OFFLINE);
3739 return 1;
3740 }
3741 return 0;
3742}
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754static void ata_scsi_remove_dev(struct ata_device *dev)
3755{
3756 struct ata_port *ap = dev->link->ap;
3757 struct scsi_device *sdev;
3758 unsigned long flags;
3759
3760
3761
3762
3763
3764
3765
3766 mutex_lock(&ap->scsi_host->scan_mutex);
3767 spin_lock_irqsave(ap->lock, flags);
3768
3769 if (zpodd_dev_enabled(dev))
3770 zpodd_exit(dev);
3771
3772
3773 sdev = dev->sdev;
3774 dev->sdev = NULL;
3775
3776 if (sdev) {
3777
3778
3779
3780
3781 if (scsi_device_get(sdev) == 0) {
3782
3783
3784
3785
3786
3787 scsi_device_set_state(sdev, SDEV_OFFLINE);
3788 } else {
3789 WARN_ON(1);
3790 sdev = NULL;
3791 }
3792 }
3793
3794 spin_unlock_irqrestore(ap->lock, flags);
3795 mutex_unlock(&ap->scsi_host->scan_mutex);
3796
3797 if (sdev) {
3798 ata_dev_info(dev, "detaching (SCSI %s)\n",
3799 dev_name(&sdev->sdev_gendev));
3800
3801 scsi_remove_device(sdev);
3802 scsi_device_put(sdev);
3803 }
3804}
3805
3806static void ata_scsi_handle_link_detach(struct ata_link *link)
3807{
3808 struct ata_port *ap = link->ap;
3809 struct ata_device *dev;
3810
3811 ata_for_each_dev(dev, link, ALL) {
3812 unsigned long flags;
3813
3814 if (!(dev->flags & ATA_DFLAG_DETACHED))
3815 continue;
3816
3817 spin_lock_irqsave(ap->lock, flags);
3818 dev->flags &= ~ATA_DFLAG_DETACHED;
3819 spin_unlock_irqrestore(ap->lock, flags);
3820
3821 ata_scsi_remove_dev(dev);
3822 }
3823}
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835void ata_scsi_media_change_notify(struct ata_device *dev)
3836{
3837 if (dev->sdev)
3838 sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE,
3839 GFP_ATOMIC);
3840}
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854void ata_scsi_hotplug(struct work_struct *work)
3855{
3856 struct ata_port *ap =
3857 container_of(work, struct ata_port, hotplug_task.work);
3858 int i;
3859
3860 if (ap->pflags & ATA_PFLAG_UNLOADING) {
3861 DPRINTK("ENTER/EXIT - unloading\n");
3862 return;
3863 }
3864
3865 DPRINTK("ENTER\n");
3866 mutex_lock(&ap->scsi_scan_mutex);
3867
3868
3869
3870
3871
3872 ata_scsi_handle_link_detach(&ap->link);
3873 if (ap->pmp_link)
3874 for (i = 0; i < SATA_PMP_MAX_PORTS; i++)
3875 ata_scsi_handle_link_detach(&ap->pmp_link[i]);
3876
3877
3878 ata_scsi_scan_host(ap, 0);
3879
3880 mutex_unlock(&ap->scsi_scan_mutex);
3881 DPRINTK("EXIT\n");
3882}
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
3901 unsigned int id, unsigned int lun)
3902{
3903 struct ata_port *ap = ata_shost_to_port(shost);
3904 unsigned long flags;
3905 int devno, rc = 0;
3906
3907 if (!ap->ops->error_handler)
3908 return -EOPNOTSUPP;
3909
3910 if (lun != SCAN_WILD_CARD && lun)
3911 return -EINVAL;
3912
3913 if (!sata_pmp_attached(ap)) {
3914 if (channel != SCAN_WILD_CARD && channel)
3915 return -EINVAL;
3916 devno = id;
3917 } else {
3918 if (id != SCAN_WILD_CARD && id)
3919 return -EINVAL;
3920 devno = channel;
3921 }
3922
3923 spin_lock_irqsave(ap->lock, flags);
3924
3925 if (devno == SCAN_WILD_CARD) {
3926 struct ata_link *link;
3927
3928 ata_for_each_link(link, ap, EDGE) {
3929 struct ata_eh_info *ehi = &link->eh_info;
3930 ehi->probe_mask |= ATA_ALL_DEVICES;
3931 ehi->action |= ATA_EH_RESET;
3932 }
3933 } else {
3934 struct ata_device *dev = ata_find_dev(ap, devno);
3935
3936 if (dev) {
3937 struct ata_eh_info *ehi = &dev->link->eh_info;
3938 ehi->probe_mask |= 1 << dev->devno;
3939 ehi->action |= ATA_EH_RESET;
3940 } else
3941 rc = -EINVAL;
3942 }
3943
3944 if (rc == 0) {
3945 ata_port_schedule_eh(ap);
3946 spin_unlock_irqrestore(ap->lock, flags);
3947 ata_port_wait_eh(ap);
3948 } else
3949 spin_unlock_irqrestore(ap->lock, flags);
3950
3951 return rc;
3952}
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964void ata_scsi_dev_rescan(struct work_struct *work)
3965{
3966 struct ata_port *ap =
3967 container_of(work, struct ata_port, scsi_rescan_task);
3968 struct ata_link *link;
3969 struct ata_device *dev;
3970 unsigned long flags;
3971
3972 mutex_lock(&ap->scsi_scan_mutex);
3973 spin_lock_irqsave(ap->lock, flags);
3974
3975 ata_for_each_link(link, ap, EDGE) {
3976 ata_for_each_dev(dev, link, ENABLED) {
3977 struct scsi_device *sdev = dev->sdev;
3978
3979 if (!sdev)
3980 continue;
3981 if (scsi_device_get(sdev))
3982 continue;
3983
3984 spin_unlock_irqrestore(ap->lock, flags);
3985 scsi_rescan_device(&(sdev->sdev_gendev));
3986 scsi_device_put(sdev);
3987 spin_lock_irqsave(ap->lock, flags);
3988 }
3989 }
3990
3991 spin_unlock_irqrestore(ap->lock, flags);
3992 mutex_unlock(&ap->scsi_scan_mutex);
3993}
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008struct ata_port *ata_sas_port_alloc(struct ata_host *host,
4009 struct ata_port_info *port_info,
4010 struct Scsi_Host *shost)
4011{
4012 struct ata_port *ap;
4013
4014 ap = ata_port_alloc(host);
4015 if (!ap)
4016 return NULL;
4017
4018 ap->port_no = 0;
4019 ap->lock = &host->lock;
4020 ap->pio_mask = port_info->pio_mask;
4021 ap->mwdma_mask = port_info->mwdma_mask;
4022 ap->udma_mask = port_info->udma_mask;
4023 ap->flags |= port_info->flags;
4024 ap->ops = port_info->port_ops;
4025 ap->cbl = ATA_CBL_SATA;
4026
4027 return ap;
4028}
4029EXPORT_SYMBOL_GPL(ata_sas_port_alloc);
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043int ata_sas_port_start(struct ata_port *ap)
4044{
4045
4046
4047
4048
4049 if (!ap->ops->error_handler)
4050 ap->pflags &= ~ATA_PFLAG_FROZEN;
4051 return 0;
4052}
4053EXPORT_SYMBOL_GPL(ata_sas_port_start);
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065void ata_sas_port_stop(struct ata_port *ap)
4066{
4067}
4068EXPORT_SYMBOL_GPL(ata_sas_port_stop);
4069
4070
4071
4072
4073
4074
4075
4076
4077void ata_sas_async_probe(struct ata_port *ap)
4078{
4079 __ata_port_probe(ap);
4080}
4081EXPORT_SYMBOL_GPL(ata_sas_async_probe);
4082
4083int ata_sas_sync_probe(struct ata_port *ap)
4084{
4085 return ata_port_probe(ap);
4086}
4087EXPORT_SYMBOL_GPL(ata_sas_sync_probe);
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101int ata_sas_port_init(struct ata_port *ap)
4102{
4103 int rc = ap->ops->port_start(ap);
4104
4105 if (rc)
4106 return rc;
4107 ap->print_id = atomic_inc_return(&ata_print_id);
4108 return 0;
4109}
4110EXPORT_SYMBOL_GPL(ata_sas_port_init);
4111
4112
4113
4114
4115
4116
4117
4118void ata_sas_port_destroy(struct ata_port *ap)
4119{
4120 if (ap->ops->port_stop)
4121 ap->ops->port_stop(ap);
4122 kfree(ap);
4123}
4124EXPORT_SYMBOL_GPL(ata_sas_port_destroy);
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap)
4136{
4137 ata_scsi_sdev_config(sdev);
4138 ata_scsi_dev_config(sdev, ap->link.device);
4139 return 0;
4140}
4141EXPORT_SYMBOL_GPL(ata_sas_slave_configure);
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap)
4154{
4155 int rc = 0;
4156
4157 ata_scsi_dump_cdb(ap, cmd);
4158
4159 if (likely(ata_dev_enabled(ap->link.device)))
4160 rc = __ata_scsi_queuecmd(cmd, ap->link.device);
4161 else {
4162 cmd->result = (DID_BAD_TARGET << 16);
4163 cmd->scsi_done(cmd);
4164 }
4165 return rc;
4166}
4167EXPORT_SYMBOL_GPL(ata_sas_queuecmd);
4168