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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 <asm/unaligned.h>
53
54#include "libata.h"
55#include "libata-transport.h"
56
57#define ATA_SCSI_RBUF_SIZE 4096
58
59static DEFINE_SPINLOCK(ata_scsi_rbuf_lock);
60static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE];
61
62typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc);
63
64static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap,
65 const struct scsi_device *scsidev);
66static struct ata_device *ata_scsi_find_dev(struct ata_port *ap,
67 const struct scsi_device *scsidev);
68
69#define RW_RECOVERY_MPAGE 0x1
70#define RW_RECOVERY_MPAGE_LEN 12
71#define CACHE_MPAGE 0x8
72#define CACHE_MPAGE_LEN 20
73#define CONTROL_MPAGE 0xa
74#define CONTROL_MPAGE_LEN 12
75#define ALL_MPAGES 0x3f
76#define ALL_SUB_MPAGES 0xff
77
78
79static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = {
80 RW_RECOVERY_MPAGE,
81 RW_RECOVERY_MPAGE_LEN - 2,
82 (1 << 7),
83 0,
84 0, 0, 0, 0,
85 0,
86 0, 0, 0
87};
88
89static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = {
90 CACHE_MPAGE,
91 CACHE_MPAGE_LEN - 2,
92 0,
93 0, 0, 0, 0, 0, 0, 0, 0, 0,
94 0,
95 0, 0, 0, 0, 0, 0, 0
96};
97
98static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = {
99 CONTROL_MPAGE,
100 CONTROL_MPAGE_LEN - 2,
101 2,
102 0,
103 0, 0, 0, 0, 0xff, 0xff,
104 0, 30
105};
106
107static const char *ata_lpm_policy_names[] = {
108 [ATA_LPM_UNKNOWN] = "max_performance",
109 [ATA_LPM_MAX_POWER] = "max_performance",
110 [ATA_LPM_MED_POWER] = "medium_power",
111 [ATA_LPM_MIN_POWER] = "min_power",
112};
113
114static ssize_t ata_scsi_lpm_store(struct device *dev,
115 struct device_attribute *attr,
116 const char *buf, size_t count)
117{
118 struct Scsi_Host *shost = class_to_shost(dev);
119 struct ata_port *ap = ata_shost_to_port(shost);
120 enum ata_lpm_policy policy;
121 unsigned long flags;
122
123
124 for (policy = ATA_LPM_MAX_POWER;
125 policy < ARRAY_SIZE(ata_lpm_policy_names); policy++) {
126 const char *name = ata_lpm_policy_names[policy];
127
128 if (strncmp(name, buf, strlen(name)) == 0)
129 break;
130 }
131 if (policy == ARRAY_SIZE(ata_lpm_policy_names))
132 return -EINVAL;
133
134 spin_lock_irqsave(ap->lock, flags);
135 ap->target_lpm_policy = policy;
136 ata_port_schedule_eh(ap);
137 spin_unlock_irqrestore(ap->lock, flags);
138
139 return count;
140}
141
142static ssize_t ata_scsi_lpm_show(struct device *dev,
143 struct device_attribute *attr, char *buf)
144{
145 struct Scsi_Host *shost = class_to_shost(dev);
146 struct ata_port *ap = ata_shost_to_port(shost);
147
148 if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names))
149 return -EINVAL;
150
151 return snprintf(buf, PAGE_SIZE, "%s\n",
152 ata_lpm_policy_names[ap->target_lpm_policy]);
153}
154DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR,
155 ata_scsi_lpm_show, ata_scsi_lpm_store);
156EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy);
157
158static ssize_t ata_scsi_park_show(struct device *device,
159 struct device_attribute *attr, char *buf)
160{
161 struct scsi_device *sdev = to_scsi_device(device);
162 struct ata_port *ap;
163 struct ata_link *link;
164 struct ata_device *dev;
165 unsigned long flags, now;
166 unsigned int uninitialized_var(msecs);
167 int rc = 0;
168
169 ap = ata_shost_to_port(sdev->host);
170
171 spin_lock_irqsave(ap->lock, flags);
172 dev = ata_scsi_find_dev(ap, sdev);
173 if (!dev) {
174 rc = -ENODEV;
175 goto unlock;
176 }
177 if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
178 rc = -EOPNOTSUPP;
179 goto unlock;
180 }
181
182 link = dev->link;
183 now = jiffies;
184 if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS &&
185 link->eh_context.unloaded_mask & (1 << dev->devno) &&
186 time_after(dev->unpark_deadline, now))
187 msecs = jiffies_to_msecs(dev->unpark_deadline - now);
188 else
189 msecs = 0;
190
191unlock:
192 spin_unlock_irq(ap->lock);
193
194 return rc ? rc : snprintf(buf, 20, "%u\n", msecs);
195}
196
197static ssize_t ata_scsi_park_store(struct device *device,
198 struct device_attribute *attr,
199 const char *buf, size_t len)
200{
201 struct scsi_device *sdev = to_scsi_device(device);
202 struct ata_port *ap;
203 struct ata_device *dev;
204 long int input;
205 unsigned long flags;
206 int rc;
207
208 rc = kstrtol(buf, 10, &input);
209 if (rc)
210 return rc;
211 if (input < -2)
212 return -EINVAL;
213 if (input > ATA_TMOUT_MAX_PARK) {
214 rc = -EOVERFLOW;
215 input = ATA_TMOUT_MAX_PARK;
216 }
217
218 ap = ata_shost_to_port(sdev->host);
219
220 spin_lock_irqsave(ap->lock, flags);
221 dev = ata_scsi_find_dev(ap, sdev);
222 if (unlikely(!dev)) {
223 rc = -ENODEV;
224 goto unlock;
225 }
226 if (dev->class != ATA_DEV_ATA) {
227 rc = -EOPNOTSUPP;
228 goto unlock;
229 }
230
231 if (input >= 0) {
232 if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
233 rc = -EOPNOTSUPP;
234 goto unlock;
235 }
236
237 dev->unpark_deadline = ata_deadline(jiffies, input);
238 dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK;
239 ata_port_schedule_eh(ap);
240 complete(&ap->park_req_pending);
241 } else {
242 switch (input) {
243 case -1:
244 dev->flags &= ~ATA_DFLAG_NO_UNLOAD;
245 break;
246 case -2:
247 dev->flags |= ATA_DFLAG_NO_UNLOAD;
248 break;
249 }
250 }
251unlock:
252 spin_unlock_irqrestore(ap->lock, flags);
253
254 return rc ? rc : len;
255}
256DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR,
257 ata_scsi_park_show, ata_scsi_park_store);
258EXPORT_SYMBOL_GPL(dev_attr_unload_heads);
259
260static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
261{
262 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
263
264 scsi_build_sense_buffer(0, cmd->sense_buffer, sk, asc, ascq);
265}
266
267static ssize_t
268ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr,
269 const char *buf, size_t count)
270{
271 struct Scsi_Host *shost = class_to_shost(dev);
272 struct ata_port *ap = ata_shost_to_port(shost);
273 if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM))
274 return ap->ops->em_store(ap, buf, count);
275 return -EINVAL;
276}
277
278static ssize_t
279ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr,
280 char *buf)
281{
282 struct Scsi_Host *shost = class_to_shost(dev);
283 struct ata_port *ap = ata_shost_to_port(shost);
284
285 if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM))
286 return ap->ops->em_show(ap, buf);
287 return -EINVAL;
288}
289DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR,
290 ata_scsi_em_message_show, ata_scsi_em_message_store);
291EXPORT_SYMBOL_GPL(dev_attr_em_message);
292
293static ssize_t
294ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr,
295 char *buf)
296{
297 struct Scsi_Host *shost = class_to_shost(dev);
298 struct ata_port *ap = ata_shost_to_port(shost);
299
300 return snprintf(buf, 23, "%d\n", ap->em_message_type);
301}
302DEVICE_ATTR(em_message_type, S_IRUGO,
303 ata_scsi_em_message_type_show, NULL);
304EXPORT_SYMBOL_GPL(dev_attr_em_message_type);
305
306static ssize_t
307ata_scsi_activity_show(struct device *dev, struct device_attribute *attr,
308 char *buf)
309{
310 struct scsi_device *sdev = to_scsi_device(dev);
311 struct ata_port *ap = ata_shost_to_port(sdev->host);
312 struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
313
314 if (atadev && ap->ops->sw_activity_show &&
315 (ap->flags & ATA_FLAG_SW_ACTIVITY))
316 return ap->ops->sw_activity_show(atadev, buf);
317 return -EINVAL;
318}
319
320static ssize_t
321ata_scsi_activity_store(struct device *dev, struct device_attribute *attr,
322 const char *buf, size_t count)
323{
324 struct scsi_device *sdev = to_scsi_device(dev);
325 struct ata_port *ap = ata_shost_to_port(sdev->host);
326 struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
327 enum sw_activity val;
328 int rc;
329
330 if (atadev && ap->ops->sw_activity_store &&
331 (ap->flags & ATA_FLAG_SW_ACTIVITY)) {
332 val = simple_strtoul(buf, NULL, 0);
333 switch (val) {
334 case OFF: case BLINK_ON: case BLINK_OFF:
335 rc = ap->ops->sw_activity_store(atadev, val);
336 if (!rc)
337 return count;
338 else
339 return rc;
340 }
341 }
342 return -EINVAL;
343}
344DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show,
345 ata_scsi_activity_store);
346EXPORT_SYMBOL_GPL(dev_attr_sw_activity);
347
348struct device_attribute *ata_common_sdev_attrs[] = {
349 &dev_attr_unload_heads,
350 NULL
351};
352EXPORT_SYMBOL_GPL(ata_common_sdev_attrs);
353
354static void ata_scsi_invalid_field(struct scsi_cmnd *cmd)
355{
356 ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0);
357
358 cmd->scsi_done(cmd);
359}
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378
379int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev,
380 sector_t capacity, int geom[])
381{
382 geom[0] = 255;
383 geom[1] = 63;
384 sector_div(capacity, 255*63);
385 geom[2] = capacity;
386
387 return 0;
388}
389
390
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399
400void ata_scsi_unlock_native_capacity(struct scsi_device *sdev)
401{
402 struct ata_port *ap = ata_shost_to_port(sdev->host);
403 struct ata_device *dev;
404 unsigned long flags;
405
406 spin_lock_irqsave(ap->lock, flags);
407
408 dev = ata_scsi_find_dev(ap, sdev);
409 if (dev && dev->n_sectors < dev->n_native_sectors) {
410 dev->flags |= ATA_DFLAG_UNLOCK_HPA;
411 dev->link->eh_info.action |= ATA_EH_RESET;
412 ata_port_schedule_eh(ap);
413 }
414
415 spin_unlock_irqrestore(ap->lock, flags);
416 ata_port_wait_eh(ap);
417}
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430
431static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev,
432 void __user *arg)
433{
434 struct ata_device *dev = ata_scsi_find_dev(ap, sdev);
435 u16 __user *dst = arg;
436 char buf[40];
437
438 if (!dev)
439 return -ENOMSG;
440
441 if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16)))
442 return -EFAULT;
443
444 ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN);
445 if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN))
446 return -EFAULT;
447
448 ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN);
449 if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN))
450 return -EFAULT;
451
452 ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN);
453 if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN))
454 return -EFAULT;
455
456 return 0;
457}
458
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468
469
470int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
471{
472 int rc = 0;
473 u8 scsi_cmd[MAX_COMMAND_SIZE];
474 u8 args[4], *argbuf = NULL, *sensebuf = NULL;
475 int argsize = 0;
476 enum dma_data_direction data_dir;
477 int cmd_result;
478
479 if (arg == NULL)
480 return -EINVAL;
481
482 if (copy_from_user(args, arg, sizeof(args)))
483 return -EFAULT;
484
485 sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO);
486 if (!sensebuf)
487 return -ENOMEM;
488
489 memset(scsi_cmd, 0, sizeof(scsi_cmd));
490
491 if (args[3]) {
492 argsize = ATA_SECT_SIZE * args[3];
493 argbuf = kmalloc(argsize, GFP_KERNEL);
494 if (argbuf == NULL) {
495 rc = -ENOMEM;
496 goto error;
497 }
498
499 scsi_cmd[1] = (4 << 1);
500 scsi_cmd[2] = 0x0e;
501
502 data_dir = DMA_FROM_DEVICE;
503 } else {
504 scsi_cmd[1] = (3 << 1);
505 scsi_cmd[2] = 0x20;
506 data_dir = DMA_NONE;
507 }
508
509 scsi_cmd[0] = ATA_16;
510
511 scsi_cmd[4] = args[2];
512 if (args[0] == ATA_CMD_SMART) {
513 scsi_cmd[6] = args[3];
514 scsi_cmd[8] = args[1];
515 scsi_cmd[10] = 0x4f;
516 scsi_cmd[12] = 0xc2;
517 } else {
518 scsi_cmd[6] = args[1];
519 }
520 scsi_cmd[14] = args[0];
521
522
523
524 cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize,
525 sensebuf, (10*HZ), 5, 0, NULL);
526
527 if (driver_byte(cmd_result) == DRIVER_SENSE) {
528 u8 *desc = sensebuf + 8;
529 cmd_result &= ~(0xFF<<24);
530
531
532
533 if (cmd_result & SAM_STAT_CHECK_CONDITION) {
534 struct scsi_sense_hdr sshdr;
535 scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE,
536 &sshdr);
537 if (sshdr.sense_key == RECOVERED_ERROR &&
538 sshdr.asc == 0 && sshdr.ascq == 0x1d)
539 cmd_result &= ~SAM_STAT_CHECK_CONDITION;
540 }
541
542
543 if (sensebuf[0] == 0x72 &&
544 desc[0] == 0x09) {
545 args[0] = desc[13];
546 args[1] = desc[3];
547 args[2] = desc[5];
548 if (copy_to_user(arg, args, sizeof(args)))
549 rc = -EFAULT;
550 }
551 }
552
553
554 if (cmd_result) {
555 rc = -EIO;
556 goto error;
557 }
558
559 if ((argbuf)
560 && copy_to_user(arg + sizeof(args), argbuf, argsize))
561 rc = -EFAULT;
562error:
563 kfree(sensebuf);
564 kfree(argbuf);
565 return rc;
566}
567
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578
579int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
580{
581 int rc = 0;
582 u8 scsi_cmd[MAX_COMMAND_SIZE];
583 u8 args[7], *sensebuf = NULL;
584 int cmd_result;
585
586 if (arg == NULL)
587 return -EINVAL;
588
589 if (copy_from_user(args, arg, sizeof(args)))
590 return -EFAULT;
591
592 sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO);
593 if (!sensebuf)
594 return -ENOMEM;
595
596 memset(scsi_cmd, 0, sizeof(scsi_cmd));
597 scsi_cmd[0] = ATA_16;
598 scsi_cmd[1] = (3 << 1);
599 scsi_cmd[2] = 0x20;
600 scsi_cmd[4] = args[1];
601 scsi_cmd[6] = args[2];
602 scsi_cmd[8] = args[3];
603 scsi_cmd[10] = args[4];
604 scsi_cmd[12] = args[5];
605 scsi_cmd[13] = args[6] & 0x4f;
606 scsi_cmd[14] = args[0];
607
608
609
610 cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0,
611 sensebuf, (10*HZ), 5, 0, NULL);
612
613 if (driver_byte(cmd_result) == DRIVER_SENSE) {
614 u8 *desc = sensebuf + 8;
615 cmd_result &= ~(0xFF<<24);
616
617
618
619 if (cmd_result & SAM_STAT_CHECK_CONDITION) {
620 struct scsi_sense_hdr sshdr;
621 scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE,
622 &sshdr);
623 if (sshdr.sense_key == RECOVERED_ERROR &&
624 sshdr.asc == 0 && sshdr.ascq == 0x1d)
625 cmd_result &= ~SAM_STAT_CHECK_CONDITION;
626 }
627
628
629 if (sensebuf[0] == 0x72 &&
630 desc[0] == 0x09) {
631 args[0] = desc[13];
632 args[1] = desc[3];
633 args[2] = desc[5];
634 args[3] = desc[7];
635 args[4] = desc[9];
636 args[5] = desc[11];
637 args[6] = desc[12];
638 if (copy_to_user(arg, args, sizeof(args)))
639 rc = -EFAULT;
640 }
641 }
642
643 if (cmd_result) {
644 rc = -EIO;
645 goto error;
646 }
647
648 error:
649 kfree(sensebuf);
650 return rc;
651}
652
653static int ata_ioc32(struct ata_port *ap)
654{
655 if (ap->flags & ATA_FLAG_PIO_DMA)
656 return 1;
657 if (ap->pflags & ATA_PFLAG_PIO32)
658 return 1;
659 return 0;
660}
661
662int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev,
663 int cmd, void __user *arg)
664{
665 int val = -EINVAL, rc = -EINVAL;
666 unsigned long flags;
667
668 switch (cmd) {
669 case ATA_IOC_GET_IO32:
670 spin_lock_irqsave(ap->lock, flags);
671 val = ata_ioc32(ap);
672 spin_unlock_irqrestore(ap->lock, flags);
673 if (copy_to_user(arg, &val, 1))
674 return -EFAULT;
675 return 0;
676
677 case ATA_IOC_SET_IO32:
678 val = (unsigned long) arg;
679 rc = 0;
680 spin_lock_irqsave(ap->lock, flags);
681 if (ap->pflags & ATA_PFLAG_PIO32CHANGE) {
682 if (val)
683 ap->pflags |= ATA_PFLAG_PIO32;
684 else
685 ap->pflags &= ~ATA_PFLAG_PIO32;
686 } else {
687 if (val != ata_ioc32(ap))
688 rc = -EINVAL;
689 }
690 spin_unlock_irqrestore(ap->lock, flags);
691 return rc;
692
693 case HDIO_GET_IDENTITY:
694 return ata_get_identity(ap, scsidev, arg);
695
696 case HDIO_DRIVE_CMD:
697 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
698 return -EACCES;
699 return ata_cmd_ioctl(scsidev, arg);
700
701 case HDIO_DRIVE_TASK:
702 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
703 return -EACCES;
704 return ata_task_ioctl(scsidev, arg);
705
706 default:
707 rc = -ENOTTY;
708 break;
709 }
710
711 return rc;
712}
713EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl);
714
715int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
716{
717 return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host),
718 scsidev, cmd, arg);
719}
720EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
721
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741static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev,
742 struct scsi_cmnd *cmd)
743{
744 struct ata_queued_cmd *qc;
745
746 qc = ata_qc_new_init(dev);
747 if (qc) {
748 qc->scsicmd = cmd;
749 qc->scsidone = cmd->scsi_done;
750
751 qc->sg = scsi_sglist(cmd);
752 qc->n_elem = scsi_sg_count(cmd);
753 } else {
754 cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1);
755 cmd->scsi_done(cmd);
756 }
757
758 return qc;
759}
760
761static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc)
762{
763 struct scsi_cmnd *scmd = qc->scsicmd;
764
765 qc->extrabytes = scmd->request->extra_len;
766 qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes;
767}
768
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781static void ata_dump_status(unsigned id, struct ata_taskfile *tf)
782{
783 u8 stat = tf->command, err = tf->feature;
784
785 printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat);
786 if (stat & ATA_BUSY) {
787 printk("Busy }\n");
788 } else {
789 if (stat & 0x40) printk("DriveReady ");
790 if (stat & 0x20) printk("DeviceFault ");
791 if (stat & 0x10) printk("SeekComplete ");
792 if (stat & 0x08) printk("DataRequest ");
793 if (stat & 0x04) printk("CorrectedError ");
794 if (stat & 0x02) printk("Index ");
795 if (stat & 0x01) printk("Error ");
796 printk("}\n");
797
798 if (err) {
799 printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err);
800 if (err & 0x04) printk("DriveStatusError ");
801 if (err & 0x80) {
802 if (err & 0x04) printk("BadCRC ");
803 else printk("Sector ");
804 }
805 if (err & 0x40) printk("UncorrectableError ");
806 if (err & 0x10) printk("SectorIdNotFound ");
807 if (err & 0x02) printk("TrackZeroNotFound ");
808 if (err & 0x01) printk("AddrMarkNotFound ");
809 printk("}\n");
810 }
811 }
812}
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk,
832 u8 *asc, u8 *ascq, int verbose)
833{
834 int i;
835
836
837 static const unsigned char sense_table[][4] = {
838
839 {0xd1, ABORTED_COMMAND, 0x00, 0x00},
840
841 {0xd0, ABORTED_COMMAND, 0x00, 0x00},
842
843 {0x61, HARDWARE_ERROR, 0x00, 0x00},
844
845 {0x84, ABORTED_COMMAND, 0x47, 0x00},
846
847 {0x37, NOT_READY, 0x04, 0x00},
848
849 {0x09, NOT_READY, 0x04, 0x00},
850
851 {0x01, MEDIUM_ERROR, 0x13, 0x00},
852
853 {0x02, HARDWARE_ERROR, 0x00, 0x00},
854
855
856 {0x08, NOT_READY, 0x04, 0x00},
857
858 {0x10, ILLEGAL_REQUEST, 0x21, 0x00},
859
860 {0x20, UNIT_ATTENTION, 0x28, 0x00},
861
862 {0x40, MEDIUM_ERROR, 0x11, 0x04},
863
864 {0x80, MEDIUM_ERROR, 0x11, 0x04},
865 {0xFF, 0xFF, 0xFF, 0xFF},
866 };
867 static const unsigned char stat_table[][4] = {
868
869 {0x80, ABORTED_COMMAND, 0x47, 0x00},
870 {0x20, HARDWARE_ERROR, 0x44, 0x00},
871 {0x08, ABORTED_COMMAND, 0x47, 0x00},
872 {0x04, RECOVERED_ERROR, 0x11, 0x00},
873 {0xFF, 0xFF, 0xFF, 0xFF},
874 };
875
876
877
878
879 if (drv_stat & ATA_BUSY) {
880 drv_err = 0;
881 }
882
883 if (drv_err) {
884
885 for (i = 0; sense_table[i][0] != 0xFF; i++) {
886
887 if ((sense_table[i][0] & drv_err) ==
888 sense_table[i][0]) {
889 *sk = sense_table[i][1];
890 *asc = sense_table[i][2];
891 *ascq = sense_table[i][3];
892 goto translate_done;
893 }
894 }
895 }
896
897
898
899
900
901
902 for (i = 0; stat_table[i][0] != 0xFF; i++) {
903 if (stat_table[i][0] & drv_stat) {
904 *sk = stat_table[i][1];
905 *asc = stat_table[i][2];
906 *ascq = stat_table[i][3];
907 goto translate_done;
908 }
909 }
910
911
912
913
914
915 *sk = ABORTED_COMMAND;
916 *asc = 0x00;
917 *ascq = 0x00;
918
919 translate_done:
920 if (verbose)
921 printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x "
922 "to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n",
923 id, drv_stat, drv_err, *sk, *asc, *ascq);
924 return;
925}
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
945{
946 struct scsi_cmnd *cmd = qc->scsicmd;
947 struct ata_taskfile *tf = &qc->result_tf;
948 unsigned char *sb = cmd->sense_buffer;
949 unsigned char *desc = sb + 8;
950 int verbose = qc->ap->ops->error_handler == NULL;
951
952 memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
953
954 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
955
956
957
958
959
960 if (qc->err_mask ||
961 tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
962 ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
963 &sb[1], &sb[2], &sb[3], verbose);
964 sb[1] &= 0x0f;
965 } else {
966 sb[1] = RECOVERED_ERROR;
967 sb[2] = 0;
968 sb[3] = 0x1D;
969 }
970
971
972
973
974 sb[0] = 0x72;
975
976 desc[0] = 0x09;
977
978
979 sb[7] = 14;
980 desc[1] = 12;
981
982
983
984
985 desc[2] = 0x00;
986 desc[3] = tf->feature;
987 desc[5] = tf->nsect;
988 desc[7] = tf->lbal;
989 desc[9] = tf->lbam;
990 desc[11] = tf->lbah;
991 desc[12] = tf->device;
992 desc[13] = tf->command;
993
994
995
996
997
998 if (tf->flags & ATA_TFLAG_LBA48) {
999 desc[2] |= 0x01;
1000 desc[4] = tf->hob_nsect;
1001 desc[6] = tf->hob_lbal;
1002 desc[8] = tf->hob_lbam;
1003 desc[10] = tf->hob_lbah;
1004 }
1005}
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017static void ata_gen_ata_sense(struct ata_queued_cmd *qc)
1018{
1019 struct ata_device *dev = qc->dev;
1020 struct scsi_cmnd *cmd = qc->scsicmd;
1021 struct ata_taskfile *tf = &qc->result_tf;
1022 unsigned char *sb = cmd->sense_buffer;
1023 unsigned char *desc = sb + 8;
1024 int verbose = qc->ap->ops->error_handler == NULL;
1025 u64 block;
1026
1027 memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
1028
1029 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
1030
1031
1032 sb[0] = 0x72;
1033
1034
1035
1036
1037 if (qc->err_mask ||
1038 tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
1039 ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
1040 &sb[1], &sb[2], &sb[3], verbose);
1041 sb[1] &= 0x0f;
1042 }
1043
1044 block = ata_tf_read_block(&qc->result_tf, dev);
1045
1046
1047 sb[7] = 12;
1048 desc[0] = 0x00;
1049 desc[1] = 10;
1050
1051 desc[2] |= 0x80;
1052 desc[6] = block >> 40;
1053 desc[7] = block >> 32;
1054 desc[8] = block >> 24;
1055 desc[9] = block >> 16;
1056 desc[10] = block >> 8;
1057 desc[11] = block;
1058}
1059
1060static void ata_scsi_sdev_config(struct scsi_device *sdev)
1061{
1062 sdev->use_10_for_rw = 1;
1063 sdev->use_10_for_ms = 1;
1064 sdev->no_report_opcodes = 1;
1065 sdev->no_write_same = 1;
1066
1067
1068
1069
1070
1071
1072 sdev->max_device_blocked = 1;
1073}
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090static int atapi_drain_needed(struct request *rq)
1091{
1092 if (likely(rq->cmd_type != REQ_TYPE_BLOCK_PC))
1093 return 0;
1094
1095 if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_WRITE))
1096 return 0;
1097
1098 return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC;
1099}
1100
1101static int ata_scsi_dev_config(struct scsi_device *sdev,
1102 struct ata_device *dev)
1103{
1104 struct request_queue *q = sdev->request_queue;
1105
1106 if (!ata_id_has_unload(dev->id))
1107 dev->flags |= ATA_DFLAG_NO_UNLOAD;
1108
1109
1110 blk_queue_max_hw_sectors(q, dev->max_sectors);
1111
1112 if (dev->class == ATA_DEV_ATAPI) {
1113 void *buf;
1114
1115 sdev->sector_size = ATA_SECT_SIZE;
1116
1117
1118 blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1);
1119
1120
1121 buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL);
1122 if (!buf) {
1123 ata_dev_err(dev, "drain buffer allocation failed\n");
1124 return -ENOMEM;
1125 }
1126
1127 blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN);
1128 } else {
1129 sdev->sector_size = ata_id_logical_sector_size(dev->id);
1130 sdev->manage_start_stop = 1;
1131 }
1132
1133
1134
1135
1136
1137
1138
1139
1140 if (sdev->sector_size > PAGE_SIZE)
1141 ata_dev_warn(dev,
1142 "sector_size=%u > PAGE_SIZE, PIO may malfunction\n",
1143 sdev->sector_size);
1144
1145 blk_queue_update_dma_alignment(q, sdev->sector_size - 1);
1146
1147 if (dev->flags & ATA_DFLAG_AN)
1148 set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events);
1149
1150 if (dev->flags & ATA_DFLAG_NCQ) {
1151 int depth;
1152
1153 depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id));
1154 depth = min(ATA_MAX_QUEUE - 1, depth);
1155 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, depth);
1156 }
1157
1158 blk_queue_flush_queueable(q, false);
1159
1160 dev->sdev = sdev;
1161 return 0;
1162}
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176int ata_scsi_slave_config(struct scsi_device *sdev)
1177{
1178 struct ata_port *ap = ata_shost_to_port(sdev->host);
1179 struct ata_device *dev = __ata_scsi_find_dev(ap, sdev);
1180 int rc = 0;
1181
1182 ata_scsi_sdev_config(sdev);
1183
1184 if (dev)
1185 rc = ata_scsi_dev_config(sdev, dev);
1186
1187 return rc;
1188}
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204void ata_scsi_slave_destroy(struct scsi_device *sdev)
1205{
1206 struct ata_port *ap = ata_shost_to_port(sdev->host);
1207 struct request_queue *q = sdev->request_queue;
1208 unsigned long flags;
1209 struct ata_device *dev;
1210
1211 if (!ap->ops->error_handler)
1212 return;
1213
1214 spin_lock_irqsave(ap->lock, flags);
1215 dev = __ata_scsi_find_dev(ap, sdev);
1216 if (dev && dev->sdev) {
1217
1218 dev->sdev = NULL;
1219 dev->flags |= ATA_DFLAG_DETACH;
1220 ata_port_schedule_eh(ap);
1221 }
1222 spin_unlock_irqrestore(ap->lock, flags);
1223
1224 kfree(q->dma_drain_buffer);
1225 q->dma_drain_buffer = NULL;
1226 q->dma_drain_size = 0;
1227}
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1241 int queue_depth, int reason)
1242{
1243 struct ata_device *dev;
1244 unsigned long flags;
1245
1246 if (reason != SCSI_QDEPTH_DEFAULT)
1247 return -EOPNOTSUPP;
1248
1249 if (queue_depth < 1 || queue_depth == sdev->queue_depth)
1250 return sdev->queue_depth;
1251
1252 dev = ata_scsi_find_dev(ap, sdev);
1253 if (!dev || !ata_dev_enabled(dev))
1254 return sdev->queue_depth;
1255
1256
1257 spin_lock_irqsave(ap->lock, flags);
1258 dev->flags &= ~ATA_DFLAG_NCQ_OFF;
1259 if (queue_depth == 1 || !ata_ncq_enabled(dev)) {
1260 dev->flags |= ATA_DFLAG_NCQ_OFF;
1261 queue_depth = 1;
1262 }
1263 spin_unlock_irqrestore(ap->lock, flags);
1264
1265
1266 queue_depth = min(queue_depth, sdev->host->can_queue);
1267 queue_depth = min(queue_depth, ata_id_queue_depth(dev->id));
1268 queue_depth = min(queue_depth, ATA_MAX_QUEUE - 1);
1269
1270 if (sdev->queue_depth == queue_depth)
1271 return -EINVAL;
1272
1273 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, queue_depth);
1274 return queue_depth;
1275}
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth,
1294 int reason)
1295{
1296 struct ata_port *ap = ata_shost_to_port(sdev->host);
1297
1298 return __ata_change_queue_depth(ap, sdev, queue_depth, reason);
1299}
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
1317{
1318 struct scsi_cmnd *scmd = qc->scsicmd;
1319 struct ata_taskfile *tf = &qc->tf;
1320 const u8 *cdb = scmd->cmnd;
1321
1322 if (scmd->cmd_len < 5)
1323 goto invalid_fld;
1324
1325 tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
1326 tf->protocol = ATA_PROT_NODATA;
1327 if (cdb[1] & 0x1) {
1328 ;
1329 }
1330 if (cdb[4] & 0x2)
1331 goto invalid_fld;
1332 if (((cdb[4] >> 4) & 0xf) != 0)
1333 goto invalid_fld;
1334
1335 if (cdb[4] & 0x1) {
1336 tf->nsect = 1;
1337
1338 if (qc->dev->flags & ATA_DFLAG_LBA) {
1339 tf->flags |= ATA_TFLAG_LBA;
1340
1341 tf->lbah = 0x0;
1342 tf->lbam = 0x0;
1343 tf->lbal = 0x0;
1344 tf->device |= ATA_LBA;
1345 } else {
1346
1347 tf->lbal = 0x1;
1348 tf->lbam = 0x0;
1349 tf->lbah = 0x0;
1350 }
1351
1352 tf->command = ATA_CMD_VERIFY;
1353 } else {
1354
1355
1356
1357 if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) &&
1358 system_state == SYSTEM_POWER_OFF)
1359 goto skip;
1360
1361 if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) &&
1362 system_entering_hibernation())
1363 goto skip;
1364
1365
1366 tf->command = ATA_CMD_STANDBYNOW1;
1367 }
1368
1369
1370
1371
1372
1373
1374
1375
1376 return 0;
1377
1378 invalid_fld:
1379 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
1380
1381 return 1;
1382 skip:
1383 scmd->result = SAM_STAT_GOOD;
1384 return 1;
1385}
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc)
1402{
1403 struct ata_taskfile *tf = &qc->tf;
1404
1405 tf->flags |= ATA_TFLAG_DEVICE;
1406 tf->protocol = ATA_PROT_NODATA;
1407
1408 if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT)
1409 tf->command = ATA_CMD_FLUSH_EXT;
1410 else
1411 tf->command = ATA_CMD_FLUSH;
1412
1413
1414 qc->flags |= ATA_QCFLAG_IO;
1415
1416 return 0;
1417}
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
1430{
1431 u64 lba = 0;
1432 u32 len;
1433
1434 VPRINTK("six-byte command\n");
1435
1436 lba |= ((u64)(cdb[1] & 0x1f)) << 16;
1437 lba |= ((u64)cdb[2]) << 8;
1438 lba |= ((u64)cdb[3]);
1439
1440 len = cdb[4];
1441
1442 *plba = lba;
1443 *plen = len;
1444}
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
1457{
1458 u64 lba = 0;
1459 u32 len = 0;
1460
1461 VPRINTK("ten-byte command\n");
1462
1463 lba |= ((u64)cdb[2]) << 24;
1464 lba |= ((u64)cdb[3]) << 16;
1465 lba |= ((u64)cdb[4]) << 8;
1466 lba |= ((u64)cdb[5]);
1467
1468 len |= ((u32)cdb[7]) << 8;
1469 len |= ((u32)cdb[8]);
1470
1471 *plba = lba;
1472 *plen = len;
1473}
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
1486{
1487 u64 lba = 0;
1488 u32 len = 0;
1489
1490 VPRINTK("sixteen-byte command\n");
1491
1492 lba |= ((u64)cdb[2]) << 56;
1493 lba |= ((u64)cdb[3]) << 48;
1494 lba |= ((u64)cdb[4]) << 40;
1495 lba |= ((u64)cdb[5]) << 32;
1496 lba |= ((u64)cdb[6]) << 24;
1497 lba |= ((u64)cdb[7]) << 16;
1498 lba |= ((u64)cdb[8]) << 8;
1499 lba |= ((u64)cdb[9]);
1500
1501 len |= ((u32)cdb[10]) << 24;
1502 len |= ((u32)cdb[11]) << 16;
1503 len |= ((u32)cdb[12]) << 8;
1504 len |= ((u32)cdb[13]);
1505
1506 *plba = lba;
1507 *plen = len;
1508}
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc)
1523{
1524 struct scsi_cmnd *scmd = qc->scsicmd;
1525 struct ata_taskfile *tf = &qc->tf;
1526 struct ata_device *dev = qc->dev;
1527 u64 dev_sectors = qc->dev->n_sectors;
1528 const u8 *cdb = scmd->cmnd;
1529 u64 block;
1530 u32 n_block;
1531
1532 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
1533 tf->protocol = ATA_PROT_NODATA;
1534
1535 if (cdb[0] == VERIFY) {
1536 if (scmd->cmd_len < 10)
1537 goto invalid_fld;
1538 scsi_10_lba_len(cdb, &block, &n_block);
1539 } else if (cdb[0] == VERIFY_16) {
1540 if (scmd->cmd_len < 16)
1541 goto invalid_fld;
1542 scsi_16_lba_len(cdb, &block, &n_block);
1543 } else
1544 goto invalid_fld;
1545
1546 if (!n_block)
1547 goto nothing_to_do;
1548 if (block >= dev_sectors)
1549 goto out_of_range;
1550 if ((block + n_block) > dev_sectors)
1551 goto out_of_range;
1552
1553 if (dev->flags & ATA_DFLAG_LBA) {
1554 tf->flags |= ATA_TFLAG_LBA;
1555
1556 if (lba_28_ok(block, n_block)) {
1557
1558 tf->command = ATA_CMD_VERIFY;
1559 tf->device |= (block >> 24) & 0xf;
1560 } else if (lba_48_ok(block, n_block)) {
1561 if (!(dev->flags & ATA_DFLAG_LBA48))
1562 goto out_of_range;
1563
1564
1565 tf->flags |= ATA_TFLAG_LBA48;
1566 tf->command = ATA_CMD_VERIFY_EXT;
1567
1568 tf->hob_nsect = (n_block >> 8) & 0xff;
1569
1570 tf->hob_lbah = (block >> 40) & 0xff;
1571 tf->hob_lbam = (block >> 32) & 0xff;
1572 tf->hob_lbal = (block >> 24) & 0xff;
1573 } else
1574
1575 goto out_of_range;
1576
1577 tf->nsect = n_block & 0xff;
1578
1579 tf->lbah = (block >> 16) & 0xff;
1580 tf->lbam = (block >> 8) & 0xff;
1581 tf->lbal = block & 0xff;
1582
1583 tf->device |= ATA_LBA;
1584 } else {
1585
1586 u32 sect, head, cyl, track;
1587
1588 if (!lba_28_ok(block, n_block))
1589 goto out_of_range;
1590
1591
1592 track = (u32)block / dev->sectors;
1593 cyl = track / dev->heads;
1594 head = track % dev->heads;
1595 sect = (u32)block % dev->sectors + 1;
1596
1597 DPRINTK("block %u track %u cyl %u head %u sect %u\n",
1598 (u32)block, track, cyl, head, sect);
1599
1600
1601
1602
1603
1604 if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
1605 goto out_of_range;
1606
1607 tf->command = ATA_CMD_VERIFY;
1608 tf->nsect = n_block & 0xff;
1609 tf->lbal = sect;
1610 tf->lbam = cyl;
1611 tf->lbah = cyl >> 8;
1612 tf->device |= head;
1613 }
1614
1615 return 0;
1616
1617invalid_fld:
1618 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
1619
1620 return 1;
1621
1622out_of_range:
1623 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0);
1624
1625 return 1;
1626
1627nothing_to_do:
1628 scmd->result = SAM_STAT_GOOD;
1629 return 1;
1630}
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc)
1651{
1652 struct scsi_cmnd *scmd = qc->scsicmd;
1653 const u8 *cdb = scmd->cmnd;
1654 unsigned int tf_flags = 0;
1655 u64 block;
1656 u32 n_block;
1657 int rc;
1658
1659 if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16)
1660 tf_flags |= ATA_TFLAG_WRITE;
1661
1662
1663 switch (cdb[0]) {
1664 case READ_10:
1665 case WRITE_10:
1666 if (unlikely(scmd->cmd_len < 10))
1667 goto invalid_fld;
1668 scsi_10_lba_len(cdb, &block, &n_block);
1669 if (cdb[1] & (1 << 3))
1670 tf_flags |= ATA_TFLAG_FUA;
1671 break;
1672 case READ_6:
1673 case WRITE_6:
1674 if (unlikely(scmd->cmd_len < 6))
1675 goto invalid_fld;
1676 scsi_6_lba_len(cdb, &block, &n_block);
1677
1678
1679
1680
1681 if (!n_block)
1682 n_block = 256;
1683 break;
1684 case READ_16:
1685 case WRITE_16:
1686 if (unlikely(scmd->cmd_len < 16))
1687 goto invalid_fld;
1688 scsi_16_lba_len(cdb, &block, &n_block);
1689 if (cdb[1] & (1 << 3))
1690 tf_flags |= ATA_TFLAG_FUA;
1691 break;
1692 default:
1693 DPRINTK("no-byte command\n");
1694 goto invalid_fld;
1695 }
1696
1697
1698 if (!n_block)
1699
1700
1701
1702
1703
1704
1705
1706 goto nothing_to_do;
1707
1708 qc->flags |= ATA_QCFLAG_IO;
1709 qc->nbytes = n_block * scmd->device->sector_size;
1710
1711 rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags,
1712 qc->tag);
1713 if (likely(rc == 0))
1714 return 0;
1715
1716 if (rc == -ERANGE)
1717 goto out_of_range;
1718
1719invalid_fld:
1720 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
1721
1722 return 1;
1723
1724out_of_range:
1725 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0);
1726
1727 return 1;
1728
1729nothing_to_do:
1730 scmd->result = SAM_STAT_GOOD;
1731 return 1;
1732}
1733
1734static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
1735{
1736 struct ata_port *ap = qc->ap;
1737 struct scsi_cmnd *cmd = qc->scsicmd;
1738 u8 *cdb = cmd->cmnd;
1739 int need_sense = (qc->err_mask != 0);
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750 if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) &&
1751 ((cdb[2] & 0x20) || need_sense)) {
1752 ata_gen_passthru_sense(qc);
1753 } else {
1754 if (!need_sense) {
1755 cmd->result = SAM_STAT_GOOD;
1756 } else {
1757
1758
1759
1760
1761
1762
1763 ata_gen_ata_sense(qc);
1764 }
1765 }
1766
1767 if (need_sense && !ap->ops->error_handler)
1768 ata_dump_status(ap->print_id, &qc->result_tf);
1769
1770 qc->scsidone(cmd);
1771
1772 ata_qc_free(qc);
1773}
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
1801static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd,
1802 ata_xlat_func_t xlat_func)
1803{
1804 struct ata_port *ap = dev->link->ap;
1805 struct ata_queued_cmd *qc;
1806 int rc;
1807
1808 VPRINTK("ENTER\n");
1809
1810 qc = ata_scsi_qc_new(dev, cmd);
1811 if (!qc)
1812 goto err_mem;
1813
1814
1815 if (cmd->sc_data_direction == DMA_FROM_DEVICE ||
1816 cmd->sc_data_direction == DMA_TO_DEVICE) {
1817 if (unlikely(scsi_bufflen(cmd) < 1)) {
1818 ata_dev_warn(dev, "WARNING: zero len r/w req\n");
1819 goto err_did;
1820 }
1821
1822 ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd));
1823
1824 qc->dma_dir = cmd->sc_data_direction;
1825 }
1826
1827 qc->complete_fn = ata_scsi_qc_complete;
1828
1829 if (xlat_func(qc))
1830 goto early_finish;
1831
1832 if (ap->ops->qc_defer) {
1833 if ((rc = ap->ops->qc_defer(qc)))
1834 goto defer;
1835 }
1836
1837
1838 ata_qc_issue(qc);
1839
1840 VPRINTK("EXIT\n");
1841 return 0;
1842
1843early_finish:
1844 ata_qc_free(qc);
1845 cmd->scsi_done(cmd);
1846 DPRINTK("EXIT - early finish (good or error)\n");
1847 return 0;
1848
1849err_did:
1850 ata_qc_free(qc);
1851 cmd->result = (DID_ERROR << 16);
1852 cmd->scsi_done(cmd);
1853err_mem:
1854 DPRINTK("EXIT - internal\n");
1855 return 0;
1856
1857defer:
1858 ata_qc_free(qc);
1859 DPRINTK("EXIT - defer\n");
1860 if (rc == ATA_DEFER_LINK)
1861 return SCSI_MLQUEUE_DEVICE_BUSY;
1862 else
1863 return SCSI_MLQUEUE_HOST_BUSY;
1864}
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in,
1881 unsigned long *flags)
1882{
1883 spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags);
1884
1885 memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE);
1886 if (copy_in)
1887 sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
1888 ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE);
1889 return ata_scsi_rbuf;
1890}
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out,
1905 unsigned long *flags)
1906{
1907 if (copy_out)
1908 sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
1909 ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE);
1910 spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags);
1911}
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928static void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
1929 unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf))
1930{
1931 u8 *rbuf;
1932 unsigned int rc;
1933 struct scsi_cmnd *cmd = args->cmd;
1934 unsigned long flags;
1935
1936 rbuf = ata_scsi_rbuf_get(cmd, false, &flags);
1937 rc = actor(args, rbuf);
1938 ata_scsi_rbuf_put(cmd, rc == 0, &flags);
1939
1940 if (rc == 0)
1941 cmd->result = SAM_STAT_GOOD;
1942 args->done(cmd);
1943}
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
1957{
1958 const u8 versions[] = {
1959 0x60,
1960
1961 0x03,
1962 0x20,
1963
1964 0x02,
1965 0x60
1966 };
1967 u8 hdr[] = {
1968 TYPE_DISK,
1969 0,
1970 0x5,
1971 2,
1972 95 - 4
1973 };
1974
1975 VPRINTK("ENTER\n");
1976
1977
1978 if (ata_id_removeable(args->id))
1979 hdr[1] |= (1 << 7);
1980
1981 memcpy(rbuf, hdr, sizeof(hdr));
1982 memcpy(&rbuf[8], "ATA ", 8);
1983 ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16);
1984 ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4);
1985
1986 if (rbuf[32] == 0 || rbuf[32] == ' ')
1987 memcpy(&rbuf[32], "n/a ", 4);
1988
1989 memcpy(rbuf + 59, versions, sizeof(versions));
1990
1991 return 0;
1992}
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf)
2005{
2006 const u8 pages[] = {
2007 0x00,
2008 0x80,
2009 0x83,
2010 0x89,
2011 0xb0,
2012 0xb1,
2013 0xb2,
2014 };
2015
2016 rbuf[3] = sizeof(pages);
2017 memcpy(rbuf + 4, pages, sizeof(pages));
2018 return 0;
2019}
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf)
2032{
2033 const u8 hdr[] = {
2034 0,
2035 0x80,
2036 0,
2037 ATA_ID_SERNO_LEN,
2038 };
2039
2040 memcpy(rbuf, hdr, sizeof(hdr));
2041 ata_id_string(args->id, (unsigned char *) &rbuf[4],
2042 ATA_ID_SERNO, ATA_ID_SERNO_LEN);
2043 return 0;
2044}
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf)
2060{
2061 const int sat_model_serial_desc_len = 68;
2062 int num;
2063
2064 rbuf[1] = 0x83;
2065 num = 4;
2066
2067
2068 rbuf[num + 0] = 2;
2069 rbuf[num + 3] = ATA_ID_SERNO_LEN;
2070 num += 4;
2071 ata_id_string(args->id, (unsigned char *) rbuf + num,
2072 ATA_ID_SERNO, ATA_ID_SERNO_LEN);
2073 num += ATA_ID_SERNO_LEN;
2074
2075
2076
2077 rbuf[num + 0] = 2;
2078 rbuf[num + 1] = 1;
2079 rbuf[num + 3] = sat_model_serial_desc_len;
2080 num += 4;
2081 memcpy(rbuf + num, "ATA ", 8);
2082 num += 8;
2083 ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD,
2084 ATA_ID_PROD_LEN);
2085 num += ATA_ID_PROD_LEN;
2086 ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO,
2087 ATA_ID_SERNO_LEN);
2088 num += ATA_ID_SERNO_LEN;
2089
2090 if (ata_id_has_wwn(args->id)) {
2091
2092
2093 rbuf[num + 0] = 1;
2094 rbuf[num + 1] = 3;
2095 rbuf[num + 3] = ATA_ID_WWN_LEN;
2096 num += 4;
2097 ata_id_string(args->id, (unsigned char *) rbuf + num,
2098 ATA_ID_WWN, ATA_ID_WWN_LEN);
2099 num += ATA_ID_WWN_LEN;
2100 }
2101 rbuf[3] = num - 4;
2102 return 0;
2103}
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf)
2116{
2117 struct ata_taskfile tf;
2118
2119 memset(&tf, 0, sizeof(tf));
2120
2121 rbuf[1] = 0x89;
2122 rbuf[2] = (0x238 >> 8);
2123 rbuf[3] = (0x238 & 0xff);
2124
2125 memcpy(&rbuf[8], "linux ", 8);
2126 memcpy(&rbuf[16], "libata ", 16);
2127 memcpy(&rbuf[32], DRV_VERSION, 4);
2128
2129
2130
2131 tf.command = ATA_DRDY;
2132 tf.lbal = 0x1;
2133 tf.nsect = 0x1;
2134
2135 ata_tf_to_fis(&tf, 0, 1, &rbuf[36]);
2136 rbuf[36] = 0x34;
2137
2138 rbuf[56] = ATA_CMD_ID_ATA;
2139
2140 memcpy(&rbuf[60], &args->id[0], 512);
2141 return 0;
2142}
2143
2144static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf)
2145{
2146 u16 min_io_sectors;
2147
2148 rbuf[1] = 0xb0;
2149 rbuf[3] = 0x3c;
2150
2151
2152
2153
2154
2155
2156
2157
2158 min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id);
2159 put_unaligned_be16(min_io_sectors, &rbuf[6]);
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170 if (ata_id_has_trim(args->id)) {
2171 put_unaligned_be64(65535 * 512 / 8, &rbuf[36]);
2172 put_unaligned_be32(1, &rbuf[28]);
2173 }
2174
2175 return 0;
2176}
2177
2178static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf)
2179{
2180 int form_factor = ata_id_form_factor(args->id);
2181 int media_rotation_rate = ata_id_rotation_rate(args->id);
2182
2183 rbuf[1] = 0xb1;
2184 rbuf[3] = 0x3c;
2185 rbuf[4] = media_rotation_rate >> 8;
2186 rbuf[5] = media_rotation_rate;
2187 rbuf[7] = form_factor;
2188
2189 return 0;
2190}
2191
2192static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf)
2193{
2194
2195 rbuf[1] = 0xb2;
2196 rbuf[3] = 0x4;
2197 rbuf[5] = 1 << 6;
2198
2199 return 0;
2200}
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213static unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf)
2214{
2215 VPRINTK("ENTER\n");
2216 return 0;
2217}
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232static void modecpy(u8 *dest, const u8 *src, int n, bool changeable)
2233{
2234 if (changeable) {
2235 memcpy(dest, src, 2);
2236 memset(dest + 2, 0, n - 2);
2237 } else {
2238 memcpy(dest, src, n);
2239 }
2240}
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable)
2256{
2257 modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable);
2258 if (changeable || ata_id_wcache_enabled(id))
2259 buf[2] |= (1 << 2);
2260 if (!changeable && !ata_id_rahead_enabled(id))
2261 buf[12] |= (1 << 5);
2262 return sizeof(def_cache_mpage);
2263}
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275static unsigned int ata_msense_ctl_mode(u8 *buf, bool changeable)
2276{
2277 modecpy(buf, def_control_mpage, sizeof(def_control_mpage), changeable);
2278 return sizeof(def_control_mpage);
2279}
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable)
2292{
2293 modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage),
2294 changeable);
2295 return sizeof(def_rw_recovery_mpage);
2296}
2297
2298
2299
2300
2301
2302static int ata_dev_supports_fua(u16 *id)
2303{
2304 unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1];
2305
2306 if (!libata_fua)
2307 return 0;
2308 if (!ata_id_has_fua(id))
2309 return 0;
2310
2311 ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model));
2312 ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw));
2313
2314 if (strcmp(model, "Maxtor"))
2315 return 1;
2316 if (strcmp(fw, "BANC1G10"))
2317 return 1;
2318
2319 return 0;
2320}
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf)
2335{
2336 struct ata_device *dev = args->dev;
2337 u8 *scsicmd = args->cmd->cmnd, *p = rbuf;
2338 const u8 sat_blk_desc[] = {
2339 0, 0, 0, 0,
2340 0,
2341 0, 0x2, 0x0
2342 };
2343 u8 pg, spg;
2344 unsigned int ebd, page_control, six_byte;
2345 u8 dpofua;
2346
2347 VPRINTK("ENTER\n");
2348
2349 six_byte = (scsicmd[0] == MODE_SENSE);
2350 ebd = !(scsicmd[1] & 0x8);
2351
2352
2353
2354
2355 page_control = scsicmd[2] >> 6;
2356 switch (page_control) {
2357 case 0:
2358 case 1:
2359 case 2:
2360 break;
2361 case 3:
2362 goto saving_not_supp;
2363 default:
2364 goto invalid_fld;
2365 }
2366
2367 if (six_byte)
2368 p += 4 + (ebd ? 8 : 0);
2369 else
2370 p += 8 + (ebd ? 8 : 0);
2371
2372 pg = scsicmd[2] & 0x3f;
2373 spg = scsicmd[3];
2374
2375
2376
2377
2378 if (spg && (spg != ALL_SUB_MPAGES))
2379 goto invalid_fld;
2380
2381 switch(pg) {
2382 case RW_RECOVERY_MPAGE:
2383 p += ata_msense_rw_recovery(p, page_control == 1);
2384 break;
2385
2386 case CACHE_MPAGE:
2387 p += ata_msense_caching(args->id, p, page_control == 1);
2388 break;
2389
2390 case CONTROL_MPAGE:
2391 p += ata_msense_ctl_mode(p, page_control == 1);
2392 break;
2393
2394 case ALL_MPAGES:
2395 p += ata_msense_rw_recovery(p, page_control == 1);
2396 p += ata_msense_caching(args->id, p, page_control == 1);
2397 p += ata_msense_ctl_mode(p, page_control == 1);
2398 break;
2399
2400 default:
2401 goto invalid_fld;
2402 }
2403
2404 dpofua = 0;
2405 if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) &&
2406 (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count))
2407 dpofua = 1 << 4;
2408
2409 if (six_byte) {
2410 rbuf[0] = p - rbuf - 1;
2411 rbuf[2] |= dpofua;
2412 if (ebd) {
2413 rbuf[3] = sizeof(sat_blk_desc);
2414 memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc));
2415 }
2416 } else {
2417 unsigned int output_len = p - rbuf - 2;
2418
2419 rbuf[0] = output_len >> 8;
2420 rbuf[1] = output_len;
2421 rbuf[3] |= dpofua;
2422 if (ebd) {
2423 rbuf[7] = sizeof(sat_blk_desc);
2424 memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc));
2425 }
2426 }
2427 return 0;
2428
2429invalid_fld:
2430 ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0);
2431
2432 return 1;
2433
2434saving_not_supp:
2435 ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0);
2436
2437 return 1;
2438}
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf)
2451{
2452 struct ata_device *dev = args->dev;
2453 u64 last_lba = dev->n_sectors - 1;
2454 u32 sector_size;
2455 u8 log2_per_phys;
2456 u16 lowest_aligned;
2457
2458 sector_size = ata_id_logical_sector_size(dev->id);
2459 log2_per_phys = ata_id_log2_per_physical_sector(dev->id);
2460 lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys);
2461
2462 VPRINTK("ENTER\n");
2463
2464 if (args->cmd->cmnd[0] == READ_CAPACITY) {
2465 if (last_lba >= 0xffffffffULL)
2466 last_lba = 0xffffffff;
2467
2468
2469 rbuf[0] = last_lba >> (8 * 3);
2470 rbuf[1] = last_lba >> (8 * 2);
2471 rbuf[2] = last_lba >> (8 * 1);
2472 rbuf[3] = last_lba;
2473
2474
2475 rbuf[4] = sector_size >> (8 * 3);
2476 rbuf[5] = sector_size >> (8 * 2);
2477 rbuf[6] = sector_size >> (8 * 1);
2478 rbuf[7] = sector_size;
2479 } else {
2480
2481 rbuf[0] = last_lba >> (8 * 7);
2482 rbuf[1] = last_lba >> (8 * 6);
2483 rbuf[2] = last_lba >> (8 * 5);
2484 rbuf[3] = last_lba >> (8 * 4);
2485 rbuf[4] = last_lba >> (8 * 3);
2486 rbuf[5] = last_lba >> (8 * 2);
2487 rbuf[6] = last_lba >> (8 * 1);
2488 rbuf[7] = last_lba;
2489
2490
2491 rbuf[ 8] = sector_size >> (8 * 3);
2492 rbuf[ 9] = sector_size >> (8 * 2);
2493 rbuf[10] = sector_size >> (8 * 1);
2494 rbuf[11] = sector_size;
2495
2496 rbuf[12] = 0;
2497 rbuf[13] = log2_per_phys;
2498 rbuf[14] = (lowest_aligned >> 8) & 0x3f;
2499 rbuf[15] = lowest_aligned;
2500
2501 if (ata_id_has_trim(args->id)) {
2502 rbuf[14] |= 0x80;
2503
2504 if (ata_id_has_zero_after_trim(args->id))
2505 rbuf[14] |= 0x40;
2506 }
2507 }
2508
2509 return 0;
2510}
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf)
2523{
2524 VPRINTK("ENTER\n");
2525 rbuf[3] = 8;
2526
2527 return 0;
2528}
2529
2530static void atapi_sense_complete(struct ata_queued_cmd *qc)
2531{
2532 if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) {
2533
2534
2535
2536
2537
2538 ata_gen_passthru_sense(qc);
2539 }
2540
2541 qc->scsidone(qc->scsicmd);
2542 ata_qc_free(qc);
2543}
2544
2545
2546static inline int ata_pio_use_silly(struct ata_port *ap)
2547{
2548 return (ap->flags & ATA_FLAG_PIO_DMA);
2549}
2550
2551static void atapi_request_sense(struct ata_queued_cmd *qc)
2552{
2553 struct ata_port *ap = qc->ap;
2554 struct scsi_cmnd *cmd = qc->scsicmd;
2555
2556 DPRINTK("ATAPI request sense\n");
2557
2558
2559 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2560
2561#ifdef CONFIG_ATA_SFF
2562 if (ap->ops->sff_tf_read)
2563 ap->ops->sff_tf_read(ap, &qc->tf);
2564#endif
2565
2566
2567 cmd->sense_buffer[0] = 0x70;
2568 cmd->sense_buffer[2] = qc->tf.feature >> 4;
2569
2570 ata_qc_reinit(qc);
2571
2572
2573 sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
2574 ata_sg_init(qc, &qc->sgent, 1);
2575 qc->dma_dir = DMA_FROM_DEVICE;
2576
2577 memset(&qc->cdb, 0, qc->dev->cdb_len);
2578 qc->cdb[0] = REQUEST_SENSE;
2579 qc->cdb[4] = SCSI_SENSE_BUFFERSIZE;
2580
2581 qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
2582 qc->tf.command = ATA_CMD_PACKET;
2583
2584 if (ata_pio_use_silly(ap)) {
2585 qc->tf.protocol = ATAPI_PROT_DMA;
2586 qc->tf.feature |= ATAPI_PKT_DMA;
2587 } else {
2588 qc->tf.protocol = ATAPI_PROT_PIO;
2589 qc->tf.lbam = SCSI_SENSE_BUFFERSIZE;
2590 qc->tf.lbah = 0;
2591 }
2592 qc->nbytes = SCSI_SENSE_BUFFERSIZE;
2593
2594 qc->complete_fn = atapi_sense_complete;
2595
2596 ata_qc_issue(qc);
2597
2598 DPRINTK("EXIT\n");
2599}
2600
2601static void atapi_qc_complete(struct ata_queued_cmd *qc)
2602{
2603 struct scsi_cmnd *cmd = qc->scsicmd;
2604 unsigned int err_mask = qc->err_mask;
2605
2606 VPRINTK("ENTER, err_mask 0x%X\n", err_mask);
2607
2608
2609 if (unlikely(qc->ap->ops->error_handler &&
2610 (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) {
2611
2612 if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) {
2613
2614
2615
2616
2617
2618 ata_gen_passthru_sense(qc);
2619 }
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634 if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev)
2635 qc->dev->sdev->locked = 0;
2636
2637 qc->scsicmd->result = SAM_STAT_CHECK_CONDITION;
2638 qc->scsidone(cmd);
2639 ata_qc_free(qc);
2640 return;
2641 }
2642
2643
2644 if (unlikely(err_mask & AC_ERR_DEV)) {
2645 cmd->result = SAM_STAT_CHECK_CONDITION;
2646 atapi_request_sense(qc);
2647 return;
2648 } else if (unlikely(err_mask)) {
2649
2650
2651
2652
2653
2654 ata_gen_passthru_sense(qc);
2655 } else {
2656 u8 *scsicmd = cmd->cmnd;
2657
2658 if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) {
2659 unsigned long flags;
2660 u8 *buf;
2661
2662 buf = ata_scsi_rbuf_get(cmd, true, &flags);
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672 if (buf[2] == 0) {
2673 buf[2] = 0x5;
2674 buf[3] = 0x32;
2675 }
2676
2677 ata_scsi_rbuf_put(cmd, true, &flags);
2678 }
2679
2680 cmd->result = SAM_STAT_GOOD;
2681 }
2682
2683 qc->scsidone(cmd);
2684 ata_qc_free(qc);
2685}
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
2697{
2698 struct scsi_cmnd *scmd = qc->scsicmd;
2699 struct ata_device *dev = qc->dev;
2700 int nodata = (scmd->sc_data_direction == DMA_NONE);
2701 int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO);
2702 unsigned int nbytes;
2703
2704 memset(qc->cdb, 0, dev->cdb_len);
2705 memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len);
2706
2707 qc->complete_fn = atapi_qc_complete;
2708
2709 qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
2710 if (scmd->sc_data_direction == DMA_TO_DEVICE) {
2711 qc->tf.flags |= ATA_TFLAG_WRITE;
2712 DPRINTK("direction: write\n");
2713 }
2714
2715 qc->tf.command = ATA_CMD_PACKET;
2716 ata_qc_set_pc_nbytes(qc);
2717
2718
2719 if (!nodata && !using_pio && atapi_check_dma(qc))
2720 using_pio = 1;
2721
2722
2723
2724
2725
2726
2727 nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024);
2728
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 if (nbytes & 0x1)
2754 nbytes++;
2755
2756 qc->tf.lbam = (nbytes & 0xFF);
2757 qc->tf.lbah = (nbytes >> 8);
2758
2759 if (nodata)
2760 qc->tf.protocol = ATAPI_PROT_NODATA;
2761 else if (using_pio)
2762 qc->tf.protocol = ATAPI_PROT_PIO;
2763 else {
2764
2765 qc->tf.protocol = ATAPI_PROT_DMA;
2766 qc->tf.feature |= ATAPI_PKT_DMA;
2767
2768 if ((dev->flags & ATA_DFLAG_DMADIR) &&
2769 (scmd->sc_data_direction != DMA_TO_DEVICE))
2770
2771 qc->tf.feature |= ATAPI_DMADIR;
2772 }
2773
2774
2775
2776
2777 return 0;
2778}
2779
2780static struct ata_device *ata_find_dev(struct ata_port *ap, int devno)
2781{
2782 if (!sata_pmp_attached(ap)) {
2783 if (likely(devno < ata_link_max_devices(&ap->link)))
2784 return &ap->link.device[devno];
2785 } else {
2786 if (likely(devno < ap->nr_pmp_links))
2787 return &ap->pmp_link[devno].device[0];
2788 }
2789
2790 return NULL;
2791}
2792
2793static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap,
2794 const struct scsi_device *scsidev)
2795{
2796 int devno;
2797
2798
2799 if (!sata_pmp_attached(ap)) {
2800 if (unlikely(scsidev->channel || scsidev->lun))
2801 return NULL;
2802 devno = scsidev->id;
2803 } else {
2804 if (unlikely(scsidev->id || scsidev->lun))
2805 return NULL;
2806 devno = scsidev->channel;
2807 }
2808
2809 return ata_find_dev(ap, devno);
2810}
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828static struct ata_device *
2829ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev)
2830{
2831 struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev);
2832
2833 if (unlikely(!dev || !ata_dev_enabled(dev)))
2834 return NULL;
2835
2836 return dev;
2837}
2838
2839
2840
2841
2842
2843
2844
2845
2846static u8
2847ata_scsi_map_proto(u8 byte1)
2848{
2849 switch((byte1 & 0x1e) >> 1) {
2850 case 3:
2851 return ATA_PROT_NODATA;
2852
2853 case 6:
2854 case 10:
2855 case 11:
2856 return ATA_PROT_DMA;
2857
2858 case 4:
2859 case 5:
2860 return ATA_PROT_PIO;
2861
2862 case 0:
2863 case 1:
2864 case 8:
2865 case 9:
2866 case 7:
2867 case 12:
2868 case 15:
2869 default:
2870 break;
2871 }
2872
2873 return ATA_PROT_UNKNOWN;
2874}
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
2886{
2887 struct ata_taskfile *tf = &(qc->tf);
2888 struct scsi_cmnd *scmd = qc->scsicmd;
2889 struct ata_device *dev = qc->dev;
2890 const u8 *cdb = scmd->cmnd;
2891
2892 if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN)
2893 goto invalid_fld;
2894
2895
2896
2897
2898
2899 if (cdb[0] == ATA_16) {
2900
2901
2902
2903
2904
2905 if (cdb[1] & 0x01) {
2906 tf->hob_feature = cdb[3];
2907 tf->hob_nsect = cdb[5];
2908 tf->hob_lbal = cdb[7];
2909 tf->hob_lbam = cdb[9];
2910 tf->hob_lbah = cdb[11];
2911 tf->flags |= ATA_TFLAG_LBA48;
2912 } else
2913 tf->flags &= ~ATA_TFLAG_LBA48;
2914
2915
2916
2917
2918 tf->feature = cdb[4];
2919 tf->nsect = cdb[6];
2920 tf->lbal = cdb[8];
2921 tf->lbam = cdb[10];
2922 tf->lbah = cdb[12];
2923 tf->device = cdb[13];
2924 tf->command = cdb[14];
2925 } else {
2926
2927
2928
2929 tf->flags &= ~ATA_TFLAG_LBA48;
2930
2931 tf->feature = cdb[3];
2932 tf->nsect = cdb[4];
2933 tf->lbal = cdb[5];
2934 tf->lbam = cdb[6];
2935 tf->lbah = cdb[7];
2936 tf->device = cdb[8];
2937 tf->command = cdb[9];
2938 }
2939
2940
2941 tf->device = dev->devno ?
2942 tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1;
2943
2944 switch (tf->command) {
2945
2946 case ATA_CMD_READ_LONG:
2947 case ATA_CMD_READ_LONG_ONCE:
2948 case ATA_CMD_WRITE_LONG:
2949 case ATA_CMD_WRITE_LONG_ONCE:
2950 if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1)
2951 goto invalid_fld;
2952 qc->sect_size = scsi_bufflen(scmd);
2953 break;
2954
2955
2956 case ATA_CMD_CFA_WRITE_NE:
2957 case ATA_CMD_CFA_TRANS_SECT:
2958 case ATA_CMD_CFA_WRITE_MULT_NE:
2959
2960 case ATA_CMD_READ:
2961 case ATA_CMD_READ_EXT:
2962 case ATA_CMD_READ_QUEUED:
2963
2964 case ATA_CMD_FPDMA_READ:
2965 case ATA_CMD_READ_MULTI:
2966 case ATA_CMD_READ_MULTI_EXT:
2967 case ATA_CMD_PIO_READ:
2968 case ATA_CMD_PIO_READ_EXT:
2969 case ATA_CMD_READ_STREAM_DMA_EXT:
2970 case ATA_CMD_READ_STREAM_EXT:
2971 case ATA_CMD_VERIFY:
2972 case ATA_CMD_VERIFY_EXT:
2973 case ATA_CMD_WRITE:
2974 case ATA_CMD_WRITE_EXT:
2975 case ATA_CMD_WRITE_FUA_EXT:
2976 case ATA_CMD_WRITE_QUEUED:
2977 case ATA_CMD_WRITE_QUEUED_FUA_EXT:
2978 case ATA_CMD_FPDMA_WRITE:
2979 case ATA_CMD_WRITE_MULTI:
2980 case ATA_CMD_WRITE_MULTI_EXT:
2981 case ATA_CMD_WRITE_MULTI_FUA_EXT:
2982 case ATA_CMD_PIO_WRITE:
2983 case ATA_CMD_PIO_WRITE_EXT:
2984 case ATA_CMD_WRITE_STREAM_DMA_EXT:
2985 case ATA_CMD_WRITE_STREAM_EXT:
2986 qc->sect_size = scmd->device->sector_size;
2987 break;
2988
2989
2990 default:
2991 qc->sect_size = ATA_SECT_SIZE;
2992 }
2993
2994
2995
2996
2997
2998
2999 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
3000 if (scmd->sc_data_direction == DMA_TO_DEVICE)
3001 tf->flags |= ATA_TFLAG_WRITE;
3002
3003 qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET;
3004
3005
3006
3007
3008
3009
3010
3011 ata_qc_set_pc_nbytes(qc);
3012
3013
3014 if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0)
3015 goto invalid_fld;
3016
3017
3018 if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf))
3019 goto invalid_fld;
3020
3021 if (is_multi_taskfile(tf)) {
3022 unsigned int multi_count = 1 << (cdb[1] >> 5);
3023
3024
3025
3026
3027 if (multi_count != dev->multi_count)
3028 ata_dev_warn(dev, "invalid multi_count %u ignored\n",
3029 multi_count);
3030 }
3031
3032
3033
3034
3035
3036
3037
3038
3039 if (tf->command == ATA_CMD_SET_FEATURES &&
3040 tf->feature == SETFEATURES_XFER)
3041 goto invalid_fld;
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058 if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm)
3059 goto invalid_fld;
3060
3061 return 0;
3062
3063 invalid_fld:
3064 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00);
3065
3066 return 1;
3067}
3068
3069static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc)
3070{
3071 struct ata_taskfile *tf = &qc->tf;
3072 struct scsi_cmnd *scmd = qc->scsicmd;
3073 struct ata_device *dev = qc->dev;
3074 const u8 *cdb = scmd->cmnd;
3075 u64 block;
3076 u32 n_block;
3077 u32 size;
3078 void *buf;
3079
3080
3081 if (unlikely(!dev->dma_mode))
3082 goto invalid_fld;
3083
3084 if (unlikely(scmd->cmd_len < 16))
3085 goto invalid_fld;
3086 scsi_16_lba_len(cdb, &block, &n_block);
3087
3088
3089 if (unlikely(!(cdb[1] & 0x8)))
3090 goto invalid_fld;
3091
3092
3093
3094
3095
3096 if (!scsi_sg_count(scmd))
3097 goto invalid_fld;
3098
3099 buf = page_address(sg_page(scsi_sglist(scmd)));
3100 size = ata_set_lba_range_entries(buf, 512, block, n_block);
3101
3102 if (ata_ncq_enabled(dev) && ata_fpdma_dsm_supported(dev)) {
3103
3104 tf->protocol = ATA_PROT_NCQ;
3105 tf->command = ATA_CMD_FPDMA_SEND;
3106 tf->hob_nsect = ATA_SUBCMD_FPDMA_SEND_DSM & 0x1f;
3107 tf->nsect = qc->tag << 3;
3108 tf->hob_feature = (size / 512) >> 8;
3109 tf->feature = size / 512;
3110
3111 tf->auxiliary = 1;
3112 } else {
3113 tf->protocol = ATA_PROT_DMA;
3114 tf->hob_feature = 0;
3115 tf->feature = ATA_DSM_TRIM;
3116 tf->hob_nsect = (size / 512) >> 8;
3117 tf->nsect = size / 512;
3118 tf->command = ATA_CMD_DSM;
3119 }
3120
3121 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 |
3122 ATA_TFLAG_WRITE;
3123
3124 ata_qc_set_pc_nbytes(qc);
3125
3126 return 0;
3127
3128 invalid_fld:
3129 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00);
3130
3131 return 1;
3132}
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145static int ata_mselect_caching(struct ata_queued_cmd *qc,
3146 const u8 *buf, int len)
3147{
3148 struct ata_taskfile *tf = &qc->tf;
3149 struct ata_device *dev = qc->dev;
3150 char mpage[CACHE_MPAGE_LEN];
3151 u8 wce;
3152
3153
3154
3155
3156
3157
3158 if (len != CACHE_MPAGE_LEN - 2)
3159 return -EINVAL;
3160
3161 wce = buf[0] & (1 << 2);
3162
3163
3164
3165
3166 ata_msense_caching(dev->id, mpage, false);
3167 mpage[2] &= ~(1 << 2);
3168 mpage[2] |= wce;
3169 if (memcmp(mpage + 2, buf, CACHE_MPAGE_LEN - 2) != 0)
3170 return -EINVAL;
3171
3172 tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
3173 tf->protocol = ATA_PROT_NODATA;
3174 tf->nsect = 0;
3175 tf->command = ATA_CMD_SET_FEATURES;
3176 tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF;
3177 return 0;
3178}
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc)
3192{
3193 struct scsi_cmnd *scmd = qc->scsicmd;
3194 const u8 *cdb = scmd->cmnd;
3195 const u8 *p;
3196 u8 pg, spg;
3197 unsigned six_byte, pg_len, hdr_len, bd_len;
3198 int len;
3199
3200 VPRINTK("ENTER\n");
3201
3202 six_byte = (cdb[0] == MODE_SELECT);
3203 if (six_byte) {
3204 if (scmd->cmd_len < 5)
3205 goto invalid_fld;
3206
3207 len = cdb[4];
3208 hdr_len = 4;
3209 } else {
3210 if (scmd->cmd_len < 9)
3211 goto invalid_fld;
3212
3213 len = (cdb[7] << 8) + cdb[8];
3214 hdr_len = 8;
3215 }
3216
3217
3218 if ((cdb[1] & 0x11) != 0x10)
3219 goto invalid_fld;
3220
3221
3222 if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len)
3223 goto invalid_param_len;
3224
3225 p = page_address(sg_page(scsi_sglist(scmd)));
3226
3227
3228 if (len < hdr_len)
3229 goto invalid_param_len;
3230
3231 if (six_byte)
3232 bd_len = p[3];
3233 else
3234 bd_len = (p[6] << 8) + p[7];
3235
3236 len -= hdr_len;
3237 p += hdr_len;
3238 if (len < bd_len)
3239 goto invalid_param_len;
3240 if (bd_len != 0 && bd_len != 8)
3241 goto invalid_param;
3242
3243 len -= bd_len;
3244 p += bd_len;
3245 if (len == 0)
3246 goto skip;
3247
3248
3249 pg = p[0] & 0x3f;
3250 if (p[0] & 0x40) {
3251 if (len < 4)
3252 goto invalid_param_len;
3253
3254 spg = p[1];
3255 pg_len = (p[2] << 8) | p[3];
3256 p += 4;
3257 len -= 4;
3258 } else {
3259 if (len < 2)
3260 goto invalid_param_len;
3261
3262 spg = 0;
3263 pg_len = p[1];
3264 p += 2;
3265 len -= 2;
3266 }
3267
3268
3269
3270
3271
3272 if (spg && (spg != ALL_SUB_MPAGES))
3273 goto invalid_param;
3274 if (pg_len > len)
3275 goto invalid_param_len;
3276
3277 switch (pg) {
3278 case CACHE_MPAGE:
3279 if (ata_mselect_caching(qc, p, pg_len) < 0)
3280 goto invalid_param;
3281 break;
3282
3283 default:
3284 goto invalid_param;
3285 }
3286
3287
3288
3289
3290
3291 if (len > pg_len)
3292 goto invalid_param;
3293
3294 return 0;
3295
3296 invalid_fld:
3297
3298 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
3299 return 1;
3300
3301 invalid_param:
3302
3303 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x26, 0x0);
3304 return 1;
3305
3306 invalid_param_len:
3307
3308 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x1a, 0x0);
3309 return 1;
3310
3311 skip:
3312 scmd->result = SAM_STAT_GOOD;
3313 return 1;
3314}
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
3329{
3330 switch (cmd) {
3331 case READ_6:
3332 case READ_10:
3333 case READ_16:
3334
3335 case WRITE_6:
3336 case WRITE_10:
3337 case WRITE_16:
3338 return ata_scsi_rw_xlat;
3339
3340 case WRITE_SAME_16:
3341 return ata_scsi_write_same_xlat;
3342
3343 case SYNCHRONIZE_CACHE:
3344 if (ata_try_flush_cache(dev))
3345 return ata_scsi_flush_xlat;
3346 break;
3347
3348 case VERIFY:
3349 case VERIFY_16:
3350 return ata_scsi_verify_xlat;
3351
3352 case ATA_12:
3353 case ATA_16:
3354 return ata_scsi_pass_thru;
3355
3356 case MODE_SELECT:
3357 case MODE_SELECT_10:
3358 return ata_scsi_mode_select_xlat;
3359 break;
3360
3361 case START_STOP:
3362 return ata_scsi_start_stop_xlat;
3363 }
3364
3365 return NULL;
3366}
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376static inline void ata_scsi_dump_cdb(struct ata_port *ap,
3377 struct scsi_cmnd *cmd)
3378{
3379#ifdef ATA_DEBUG
3380 struct scsi_device *scsidev = cmd->device;
3381 u8 *scsicmd = cmd->cmnd;
3382
3383 DPRINTK("CDB (%u:%d,%d,%d) %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
3384 ap->print_id,
3385 scsidev->channel, scsidev->id, scsidev->lun,
3386 scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3],
3387 scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7],
3388 scsicmd[8]);
3389#endif
3390}
3391
3392static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd,
3393 struct ata_device *dev)
3394{
3395 u8 scsi_op = scmd->cmnd[0];
3396 ata_xlat_func_t xlat_func;
3397 int rc = 0;
3398
3399 if (dev->class == ATA_DEV_ATA) {
3400 if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len))
3401 goto bad_cdb_len;
3402
3403 xlat_func = ata_get_xlat_func(dev, scsi_op);
3404 } else {
3405 if (unlikely(!scmd->cmd_len))
3406 goto bad_cdb_len;
3407
3408 xlat_func = NULL;
3409 if (likely((scsi_op != ATA_16) || !atapi_passthru16)) {
3410
3411 int len = COMMAND_SIZE(scsi_op);
3412 if (unlikely(len > scmd->cmd_len || len > dev->cdb_len))
3413 goto bad_cdb_len;
3414
3415 xlat_func = atapi_xlat;
3416 } else {
3417
3418 if (unlikely(scmd->cmd_len > 16))
3419 goto bad_cdb_len;
3420
3421 xlat_func = ata_get_xlat_func(dev, scsi_op);
3422 }
3423 }
3424
3425 if (xlat_func)
3426 rc = ata_scsi_translate(dev, scmd, xlat_func);
3427 else
3428 ata_scsi_simulate(dev, scmd);
3429
3430 return rc;
3431
3432 bad_cdb_len:
3433 DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n",
3434 scmd->cmd_len, scsi_op, dev->cdb_len);
3435 scmd->result = DID_ERROR << 16;
3436 scmd->scsi_done(scmd);
3437 return 0;
3438}
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd)
3460{
3461 struct ata_port *ap;
3462 struct ata_device *dev;
3463 struct scsi_device *scsidev = cmd->device;
3464 int rc = 0;
3465 unsigned long irq_flags;
3466
3467 ap = ata_shost_to_port(shost);
3468
3469 spin_lock_irqsave(ap->lock, irq_flags);
3470
3471 ata_scsi_dump_cdb(ap, cmd);
3472
3473 dev = ata_scsi_find_dev(ap, scsidev);
3474 if (likely(dev))
3475 rc = __ata_scsi_queuecmd(cmd, dev);
3476 else {
3477 cmd->result = (DID_BAD_TARGET << 16);
3478 cmd->scsi_done(cmd);
3479 }
3480
3481 spin_unlock_irqrestore(ap->lock, irq_flags);
3482
3483 return rc;
3484}
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd)
3499{
3500 struct ata_scsi_args args;
3501 const u8 *scsicmd = cmd->cmnd;
3502 u8 tmp8;
3503
3504 args.dev = dev;
3505 args.id = dev->id;
3506 args.cmd = cmd;
3507 args.done = cmd->scsi_done;
3508
3509 switch(scsicmd[0]) {
3510
3511 case FORMAT_UNIT:
3512 ata_scsi_invalid_field(cmd);
3513 break;
3514
3515 case INQUIRY:
3516 if (scsicmd[1] & 2)
3517 ata_scsi_invalid_field(cmd);
3518 else if ((scsicmd[1] & 1) == 0)
3519 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std);
3520 else switch (scsicmd[2]) {
3521 case 0x00:
3522 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00);
3523 break;
3524 case 0x80:
3525 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80);
3526 break;
3527 case 0x83:
3528 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83);
3529 break;
3530 case 0x89:
3531 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89);
3532 break;
3533 case 0xb0:
3534 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0);
3535 break;
3536 case 0xb1:
3537 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1);
3538 break;
3539 case 0xb2:
3540 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2);
3541 break;
3542 default:
3543 ata_scsi_invalid_field(cmd);
3544 break;
3545 }
3546 break;
3547
3548 case MODE_SENSE:
3549 case MODE_SENSE_10:
3550 ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense);
3551 break;
3552
3553 case READ_CAPACITY:
3554 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
3555 break;
3556
3557 case SERVICE_ACTION_IN:
3558 if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16)
3559 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
3560 else
3561 ata_scsi_invalid_field(cmd);
3562 break;
3563
3564 case REPORT_LUNS:
3565 ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns);
3566 break;
3567
3568 case REQUEST_SENSE:
3569 ata_scsi_set_sense(cmd, 0, 0, 0);
3570 cmd->result = (DRIVER_SENSE << 24);
3571 cmd->scsi_done(cmd);
3572 break;
3573
3574
3575
3576
3577 case SYNCHRONIZE_CACHE:
3578
3579
3580
3581 case REZERO_UNIT:
3582 case SEEK_6:
3583 case SEEK_10:
3584 case TEST_UNIT_READY:
3585 ata_scsi_rbuf_fill(&args, ata_scsiop_noop);
3586 break;
3587
3588 case SEND_DIAGNOSTIC:
3589 tmp8 = scsicmd[1] & ~(1 << 3);
3590 if ((tmp8 == 0x4) && (!scsicmd[3]) && (!scsicmd[4]))
3591 ata_scsi_rbuf_fill(&args, ata_scsiop_noop);
3592 else
3593 ata_scsi_invalid_field(cmd);
3594 break;
3595
3596
3597 default:
3598 ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0);
3599
3600 cmd->scsi_done(cmd);
3601 break;
3602 }
3603}
3604
3605int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht)
3606{
3607 int i, rc;
3608
3609 for (i = 0; i < host->n_ports; i++) {
3610 struct ata_port *ap = host->ports[i];
3611 struct Scsi_Host *shost;
3612
3613 rc = -ENOMEM;
3614 shost = scsi_host_alloc(sht, sizeof(struct ata_port *));
3615 if (!shost)
3616 goto err_alloc;
3617
3618 shost->eh_noresume = 1;
3619 *(struct ata_port **)&shost->hostdata[0] = ap;
3620 ap->scsi_host = shost;
3621
3622 shost->transportt = ata_scsi_transport_template;
3623 shost->unique_id = ap->print_id;
3624 shost->max_id = 16;
3625 shost->max_lun = 1;
3626 shost->max_channel = 1;
3627 shost->max_cmd_len = 16;
3628
3629
3630
3631
3632
3633
3634 shost->max_host_blocked = 1;
3635
3636 rc = scsi_add_host_with_dma(ap->scsi_host,
3637 &ap->tdev, ap->host->dev);
3638 if (rc)
3639 goto err_add;
3640 }
3641
3642 return 0;
3643
3644 err_add:
3645 scsi_host_put(host->ports[i]->scsi_host);
3646 err_alloc:
3647 while (--i >= 0) {
3648 struct Scsi_Host *shost = host->ports[i]->scsi_host;
3649
3650 scsi_remove_host(shost);
3651 scsi_host_put(shost);
3652 }
3653 return rc;
3654}
3655
3656void ata_scsi_scan_host(struct ata_port *ap, int sync)
3657{
3658 int tries = 5;
3659 struct ata_device *last_failed_dev = NULL;
3660 struct ata_link *link;
3661 struct ata_device *dev;
3662
3663 repeat:
3664 ata_for_each_link(link, ap, EDGE) {
3665 ata_for_each_dev(dev, link, ENABLED) {
3666 struct scsi_device *sdev;
3667 int channel = 0, id = 0;
3668
3669 if (dev->sdev)
3670 continue;
3671
3672 if (ata_is_host_link(link))
3673 id = dev->devno;
3674 else
3675 channel = link->pmp;
3676
3677 sdev = __scsi_add_device(ap->scsi_host, channel, id, 0,
3678 NULL);
3679 if (!IS_ERR(sdev)) {
3680 dev->sdev = sdev;
3681 scsi_device_put(sdev);
3682 } else {
3683 dev->sdev = NULL;
3684 }
3685 }
3686 }
3687
3688
3689
3690
3691
3692 ata_for_each_link(link, ap, EDGE) {
3693 ata_for_each_dev(dev, link, ENABLED) {
3694 if (!dev->sdev)
3695 goto exit_loop;
3696 }
3697 }
3698 exit_loop:
3699 if (!link)
3700 return;
3701
3702
3703 if (sync) {
3704
3705
3706
3707 if (dev != last_failed_dev) {
3708 msleep(100);
3709 last_failed_dev = dev;
3710 goto repeat;
3711 }
3712
3713
3714
3715
3716 if (--tries) {
3717 msleep(100);
3718 goto repeat;
3719 }
3720
3721 ata_port_err(ap,
3722 "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n");
3723 }
3724
3725 queue_delayed_work(system_long_wq, &ap->hotplug_task,
3726 round_jiffies_relative(HZ));
3727}
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744int ata_scsi_offline_dev(struct ata_device *dev)
3745{
3746 if (dev->sdev) {
3747 scsi_device_set_state(dev->sdev, SDEV_OFFLINE);
3748 return 1;
3749 }
3750 return 0;
3751}
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763static void ata_scsi_remove_dev(struct ata_device *dev)
3764{
3765 struct ata_port *ap = dev->link->ap;
3766 struct scsi_device *sdev;
3767 unsigned long flags;
3768
3769
3770
3771
3772
3773
3774
3775 mutex_lock(&ap->scsi_host->scan_mutex);
3776 spin_lock_irqsave(ap->lock, flags);
3777
3778
3779 sdev = dev->sdev;
3780 dev->sdev = NULL;
3781
3782 if (sdev) {
3783
3784
3785
3786
3787 if (scsi_device_get(sdev) == 0) {
3788
3789
3790
3791
3792
3793 scsi_device_set_state(sdev, SDEV_OFFLINE);
3794 } else {
3795 WARN_ON(1);
3796 sdev = NULL;
3797 }
3798 }
3799
3800 spin_unlock_irqrestore(ap->lock, flags);
3801 mutex_unlock(&ap->scsi_host->scan_mutex);
3802
3803 if (sdev) {
3804 ata_dev_info(dev, "detaching (SCSI %s)\n",
3805 dev_name(&sdev->sdev_gendev));
3806
3807 scsi_remove_device(sdev);
3808 scsi_device_put(sdev);
3809 }
3810}
3811
3812static void ata_scsi_handle_link_detach(struct ata_link *link)
3813{
3814 struct ata_port *ap = link->ap;
3815 struct ata_device *dev;
3816
3817 ata_for_each_dev(dev, link, ALL) {
3818 unsigned long flags;
3819
3820 if (!(dev->flags & ATA_DFLAG_DETACHED))
3821 continue;
3822
3823 spin_lock_irqsave(ap->lock, flags);
3824 dev->flags &= ~ATA_DFLAG_DETACHED;
3825 spin_unlock_irqrestore(ap->lock, flags);
3826
3827 if (zpodd_dev_enabled(dev))
3828 zpodd_exit(dev);
3829
3830 ata_scsi_remove_dev(dev);
3831 }
3832}
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844void ata_scsi_media_change_notify(struct ata_device *dev)
3845{
3846 if (dev->sdev)
3847 sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE,
3848 GFP_ATOMIC);
3849}
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863void ata_scsi_hotplug(struct work_struct *work)
3864{
3865 struct ata_port *ap =
3866 container_of(work, struct ata_port, hotplug_task.work);
3867 int i;
3868
3869 if (ap->pflags & ATA_PFLAG_UNLOADING) {
3870 DPRINTK("ENTER/EXIT - unloading\n");
3871 return;
3872 }
3873
3874 DPRINTK("ENTER\n");
3875 mutex_lock(&ap->scsi_scan_mutex);
3876
3877
3878
3879
3880
3881 ata_scsi_handle_link_detach(&ap->link);
3882 if (ap->pmp_link)
3883 for (i = 0; i < SATA_PMP_MAX_PORTS; i++)
3884 ata_scsi_handle_link_detach(&ap->pmp_link[i]);
3885
3886
3887 ata_scsi_scan_host(ap, 0);
3888
3889 mutex_unlock(&ap->scsi_scan_mutex);
3890 DPRINTK("EXIT\n");
3891}
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
3910 unsigned int id, unsigned int lun)
3911{
3912 struct ata_port *ap = ata_shost_to_port(shost);
3913 unsigned long flags;
3914 int devno, rc = 0;
3915
3916 if (!ap->ops->error_handler)
3917 return -EOPNOTSUPP;
3918
3919 if (lun != SCAN_WILD_CARD && lun)
3920 return -EINVAL;
3921
3922 if (!sata_pmp_attached(ap)) {
3923 if (channel != SCAN_WILD_CARD && channel)
3924 return -EINVAL;
3925 devno = id;
3926 } else {
3927 if (id != SCAN_WILD_CARD && id)
3928 return -EINVAL;
3929 devno = channel;
3930 }
3931
3932 spin_lock_irqsave(ap->lock, flags);
3933
3934 if (devno == SCAN_WILD_CARD) {
3935 struct ata_link *link;
3936
3937 ata_for_each_link(link, ap, EDGE) {
3938 struct ata_eh_info *ehi = &link->eh_info;
3939 ehi->probe_mask |= ATA_ALL_DEVICES;
3940 ehi->action |= ATA_EH_RESET;
3941 }
3942 } else {
3943 struct ata_device *dev = ata_find_dev(ap, devno);
3944
3945 if (dev) {
3946 struct ata_eh_info *ehi = &dev->link->eh_info;
3947 ehi->probe_mask |= 1 << dev->devno;
3948 ehi->action |= ATA_EH_RESET;
3949 } else
3950 rc = -EINVAL;
3951 }
3952
3953 if (rc == 0) {
3954 ata_port_schedule_eh(ap);
3955 spin_unlock_irqrestore(ap->lock, flags);
3956 ata_port_wait_eh(ap);
3957 } else
3958 spin_unlock_irqrestore(ap->lock, flags);
3959
3960 return rc;
3961}
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973void ata_scsi_dev_rescan(struct work_struct *work)
3974{
3975 struct ata_port *ap =
3976 container_of(work, struct ata_port, scsi_rescan_task);
3977 struct ata_link *link;
3978 struct ata_device *dev;
3979 unsigned long flags;
3980
3981 mutex_lock(&ap->scsi_scan_mutex);
3982 spin_lock_irqsave(ap->lock, flags);
3983
3984 ata_for_each_link(link, ap, EDGE) {
3985 ata_for_each_dev(dev, link, ENABLED) {
3986 struct scsi_device *sdev = dev->sdev;
3987
3988 if (!sdev)
3989 continue;
3990 if (scsi_device_get(sdev))
3991 continue;
3992
3993 spin_unlock_irqrestore(ap->lock, flags);
3994 scsi_rescan_device(&(sdev->sdev_gendev));
3995 scsi_device_put(sdev);
3996 spin_lock_irqsave(ap->lock, flags);
3997 }
3998 }
3999
4000 spin_unlock_irqrestore(ap->lock, flags);
4001 mutex_unlock(&ap->scsi_scan_mutex);
4002}
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017struct ata_port *ata_sas_port_alloc(struct ata_host *host,
4018 struct ata_port_info *port_info,
4019 struct Scsi_Host *shost)
4020{
4021 struct ata_port *ap;
4022
4023 ap = ata_port_alloc(host);
4024 if (!ap)
4025 return NULL;
4026
4027 ap->port_no = 0;
4028 ap->lock = &host->lock;
4029 ap->pio_mask = port_info->pio_mask;
4030 ap->mwdma_mask = port_info->mwdma_mask;
4031 ap->udma_mask = port_info->udma_mask;
4032 ap->flags |= port_info->flags;
4033 ap->ops = port_info->port_ops;
4034 ap->cbl = ATA_CBL_SATA;
4035
4036 return ap;
4037}
4038EXPORT_SYMBOL_GPL(ata_sas_port_alloc);
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052int ata_sas_port_start(struct ata_port *ap)
4053{
4054
4055
4056
4057
4058 if (!ap->ops->error_handler)
4059 ap->pflags &= ~ATA_PFLAG_FROZEN;
4060 return 0;
4061}
4062EXPORT_SYMBOL_GPL(ata_sas_port_start);
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074void ata_sas_port_stop(struct ata_port *ap)
4075{
4076}
4077EXPORT_SYMBOL_GPL(ata_sas_port_stop);
4078
4079
4080
4081
4082
4083
4084
4085
4086void ata_sas_async_probe(struct ata_port *ap)
4087{
4088 __ata_port_probe(ap);
4089}
4090EXPORT_SYMBOL_GPL(ata_sas_async_probe);
4091
4092int ata_sas_sync_probe(struct ata_port *ap)
4093{
4094 return ata_port_probe(ap);
4095}
4096EXPORT_SYMBOL_GPL(ata_sas_sync_probe);
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110int ata_sas_port_init(struct ata_port *ap)
4111{
4112 int rc = ap->ops->port_start(ap);
4113
4114 if (rc)
4115 return rc;
4116 ap->print_id = atomic_inc_return(&ata_print_id);
4117 return 0;
4118}
4119EXPORT_SYMBOL_GPL(ata_sas_port_init);
4120
4121
4122
4123
4124
4125
4126
4127void ata_sas_port_destroy(struct ata_port *ap)
4128{
4129 if (ap->ops->port_stop)
4130 ap->ops->port_stop(ap);
4131 kfree(ap);
4132}
4133EXPORT_SYMBOL_GPL(ata_sas_port_destroy);
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap)
4145{
4146 ata_scsi_sdev_config(sdev);
4147 ata_scsi_dev_config(sdev, ap->link.device);
4148 return 0;
4149}
4150EXPORT_SYMBOL_GPL(ata_sas_slave_configure);
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap)
4163{
4164 int rc = 0;
4165
4166 ata_scsi_dump_cdb(ap, cmd);
4167
4168 if (likely(ata_dev_enabled(ap->link.device)))
4169 rc = __ata_scsi_queuecmd(cmd, ap->link.device);
4170 else {
4171 cmd->result = (DID_BAD_TARGET << 16);
4172 cmd->scsi_done(cmd);
4173 }
4174 return rc;
4175}
4176EXPORT_SYMBOL_GPL(ata_sas_queuecmd);
4177