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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 <scsi/scsi.h>
41#include <scsi/scsi_host.h>
42#include <scsi/scsi_cmnd.h>
43#include <scsi/scsi_eh.h>
44#include <scsi/scsi_device.h>
45#include <scsi/scsi_tcq.h>
46#include <scsi/scsi_transport.h>
47#include <linux/libata.h>
48#include <linux/hdreg.h>
49#include <linux/uaccess.h>
50#include <linux/suspend.h>
51#include <asm/unaligned.h>
52
53#include "libata.h"
54#include "libata-transport.h"
55
56#define ATA_SCSI_RBUF_SIZE 4096
57
58static DEFINE_SPINLOCK(ata_scsi_rbuf_lock);
59static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE];
60
61typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc);
62
63static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap,
64 const struct scsi_device *scsidev);
65static struct ata_device *ata_scsi_find_dev(struct ata_port *ap,
66 const struct scsi_device *scsidev);
67
68#define RW_RECOVERY_MPAGE 0x1
69#define RW_RECOVERY_MPAGE_LEN 12
70#define CACHE_MPAGE 0x8
71#define CACHE_MPAGE_LEN 20
72#define CONTROL_MPAGE 0xa
73#define CONTROL_MPAGE_LEN 12
74#define ALL_MPAGES 0x3f
75#define ALL_SUB_MPAGES 0xff
76
77
78static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = {
79 RW_RECOVERY_MPAGE,
80 RW_RECOVERY_MPAGE_LEN - 2,
81 (1 << 7),
82 0,
83 0, 0, 0, 0,
84 0,
85 0, 0, 0
86};
87
88static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = {
89 CACHE_MPAGE,
90 CACHE_MPAGE_LEN - 2,
91 0,
92 0, 0, 0, 0, 0, 0, 0, 0, 0,
93 0,
94 0, 0, 0, 0, 0, 0, 0
95};
96
97static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = {
98 CONTROL_MPAGE,
99 CONTROL_MPAGE_LEN - 2,
100 2,
101 0,
102 0, 0, 0, 0, 0xff, 0xff,
103 0, 30
104};
105
106static const char *ata_lpm_policy_names[] = {
107 [ATA_LPM_UNKNOWN] = "max_performance",
108 [ATA_LPM_MAX_POWER] = "max_performance",
109 [ATA_LPM_MED_POWER] = "medium_power",
110 [ATA_LPM_MIN_POWER] = "min_power",
111};
112
113static ssize_t ata_scsi_lpm_store(struct device *dev,
114 struct device_attribute *attr,
115 const char *buf, size_t count)
116{
117 struct Scsi_Host *shost = class_to_shost(dev);
118 struct ata_port *ap = ata_shost_to_port(shost);
119 enum ata_lpm_policy policy;
120 unsigned long flags;
121
122
123 for (policy = ATA_LPM_MAX_POWER;
124 policy < ARRAY_SIZE(ata_lpm_policy_names); policy++) {
125 const char *name = ata_lpm_policy_names[policy];
126
127 if (strncmp(name, buf, strlen(name)) == 0)
128 break;
129 }
130 if (policy == ARRAY_SIZE(ata_lpm_policy_names))
131 return -EINVAL;
132
133 spin_lock_irqsave(ap->lock, flags);
134 ap->target_lpm_policy = policy;
135 ata_port_schedule_eh(ap);
136 spin_unlock_irqrestore(ap->lock, flags);
137
138 return count;
139}
140
141static ssize_t ata_scsi_lpm_show(struct device *dev,
142 struct device_attribute *attr, char *buf)
143{
144 struct Scsi_Host *shost = class_to_shost(dev);
145 struct ata_port *ap = ata_shost_to_port(shost);
146
147 if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names))
148 return -EINVAL;
149
150 return snprintf(buf, PAGE_SIZE, "%s\n",
151 ata_lpm_policy_names[ap->target_lpm_policy]);
152}
153DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR,
154 ata_scsi_lpm_show, ata_scsi_lpm_store);
155EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy);
156
157static ssize_t ata_scsi_park_show(struct device *device,
158 struct device_attribute *attr, char *buf)
159{
160 struct scsi_device *sdev = to_scsi_device(device);
161 struct ata_port *ap;
162 struct ata_link *link;
163 struct ata_device *dev;
164 unsigned long flags, now;
165 unsigned int uninitialized_var(msecs);
166 int rc = 0;
167
168 ap = ata_shost_to_port(sdev->host);
169
170 spin_lock_irqsave(ap->lock, flags);
171 dev = ata_scsi_find_dev(ap, sdev);
172 if (!dev) {
173 rc = -ENODEV;
174 goto unlock;
175 }
176 if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
177 rc = -EOPNOTSUPP;
178 goto unlock;
179 }
180
181 link = dev->link;
182 now = jiffies;
183 if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS &&
184 link->eh_context.unloaded_mask & (1 << dev->devno) &&
185 time_after(dev->unpark_deadline, now))
186 msecs = jiffies_to_msecs(dev->unpark_deadline - now);
187 else
188 msecs = 0;
189
190unlock:
191 spin_unlock_irq(ap->lock);
192
193 return rc ? rc : snprintf(buf, 20, "%u\n", msecs);
194}
195
196static ssize_t ata_scsi_park_store(struct device *device,
197 struct device_attribute *attr,
198 const char *buf, size_t len)
199{
200 struct scsi_device *sdev = to_scsi_device(device);
201 struct ata_port *ap;
202 struct ata_device *dev;
203 long int input;
204 unsigned long flags;
205 int rc;
206
207 rc = strict_strtol(buf, 10, &input);
208 if (rc || input < -2)
209 return -EINVAL;
210 if (input > ATA_TMOUT_MAX_PARK) {
211 rc = -EOVERFLOW;
212 input = ATA_TMOUT_MAX_PARK;
213 }
214
215 ap = ata_shost_to_port(sdev->host);
216
217 spin_lock_irqsave(ap->lock, flags);
218 dev = ata_scsi_find_dev(ap, sdev);
219 if (unlikely(!dev)) {
220 rc = -ENODEV;
221 goto unlock;
222 }
223 if (dev->class != ATA_DEV_ATA) {
224 rc = -EOPNOTSUPP;
225 goto unlock;
226 }
227
228 if (input >= 0) {
229 if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
230 rc = -EOPNOTSUPP;
231 goto unlock;
232 }
233
234 dev->unpark_deadline = ata_deadline(jiffies, input);
235 dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK;
236 ata_port_schedule_eh(ap);
237 complete(&ap->park_req_pending);
238 } else {
239 switch (input) {
240 case -1:
241 dev->flags &= ~ATA_DFLAG_NO_UNLOAD;
242 break;
243 case -2:
244 dev->flags |= ATA_DFLAG_NO_UNLOAD;
245 break;
246 }
247 }
248unlock:
249 spin_unlock_irqrestore(ap->lock, flags);
250
251 return rc ? rc : len;
252}
253DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR,
254 ata_scsi_park_show, ata_scsi_park_store);
255EXPORT_SYMBOL_GPL(dev_attr_unload_heads);
256
257static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
258{
259 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
260
261 scsi_build_sense_buffer(0, cmd->sense_buffer, sk, asc, ascq);
262}
263
264static ssize_t
265ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr,
266 const char *buf, size_t count)
267{
268 struct Scsi_Host *shost = class_to_shost(dev);
269 struct ata_port *ap = ata_shost_to_port(shost);
270 if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM))
271 return ap->ops->em_store(ap, buf, count);
272 return -EINVAL;
273}
274
275static ssize_t
276ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr,
277 char *buf)
278{
279 struct Scsi_Host *shost = class_to_shost(dev);
280 struct ata_port *ap = ata_shost_to_port(shost);
281
282 if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM))
283 return ap->ops->em_show(ap, buf);
284 return -EINVAL;
285}
286DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR,
287 ata_scsi_em_message_show, ata_scsi_em_message_store);
288EXPORT_SYMBOL_GPL(dev_attr_em_message);
289
290static ssize_t
291ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr,
292 char *buf)
293{
294 struct Scsi_Host *shost = class_to_shost(dev);
295 struct ata_port *ap = ata_shost_to_port(shost);
296
297 return snprintf(buf, 23, "%d\n", ap->em_message_type);
298}
299DEVICE_ATTR(em_message_type, S_IRUGO,
300 ata_scsi_em_message_type_show, NULL);
301EXPORT_SYMBOL_GPL(dev_attr_em_message_type);
302
303static ssize_t
304ata_scsi_activity_show(struct device *dev, struct device_attribute *attr,
305 char *buf)
306{
307 struct scsi_device *sdev = to_scsi_device(dev);
308 struct ata_port *ap = ata_shost_to_port(sdev->host);
309 struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
310
311 if (ap->ops->sw_activity_show && (ap->flags & ATA_FLAG_SW_ACTIVITY))
312 return ap->ops->sw_activity_show(atadev, buf);
313 return -EINVAL;
314}
315
316static ssize_t
317ata_scsi_activity_store(struct device *dev, struct device_attribute *attr,
318 const char *buf, size_t count)
319{
320 struct scsi_device *sdev = to_scsi_device(dev);
321 struct ata_port *ap = ata_shost_to_port(sdev->host);
322 struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
323 enum sw_activity val;
324 int rc;
325
326 if (ap->ops->sw_activity_store && (ap->flags & ATA_FLAG_SW_ACTIVITY)) {
327 val = simple_strtoul(buf, NULL, 0);
328 switch (val) {
329 case OFF: case BLINK_ON: case BLINK_OFF:
330 rc = ap->ops->sw_activity_store(atadev, val);
331 if (!rc)
332 return count;
333 else
334 return rc;
335 }
336 }
337 return -EINVAL;
338}
339DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show,
340 ata_scsi_activity_store);
341EXPORT_SYMBOL_GPL(dev_attr_sw_activity);
342
343struct device_attribute *ata_common_sdev_attrs[] = {
344 &dev_attr_unload_heads,
345 NULL
346};
347EXPORT_SYMBOL_GPL(ata_common_sdev_attrs);
348
349static void ata_scsi_invalid_field(struct scsi_cmnd *cmd)
350{
351 ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0);
352
353 cmd->scsi_done(cmd);
354}
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374int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev,
375 sector_t capacity, int geom[])
376{
377 geom[0] = 255;
378 geom[1] = 63;
379 sector_div(capacity, 255*63);
380 geom[2] = capacity;
381
382 return 0;
383}
384
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394
395void ata_scsi_unlock_native_capacity(struct scsi_device *sdev)
396{
397 struct ata_port *ap = ata_shost_to_port(sdev->host);
398 struct ata_device *dev;
399 unsigned long flags;
400
401 spin_lock_irqsave(ap->lock, flags);
402
403 dev = ata_scsi_find_dev(ap, sdev);
404 if (dev && dev->n_sectors < dev->n_native_sectors) {
405 dev->flags |= ATA_DFLAG_UNLOCK_HPA;
406 dev->link->eh_info.action |= ATA_EH_RESET;
407 ata_port_schedule_eh(ap);
408 }
409
410 spin_unlock_irqrestore(ap->lock, flags);
411 ata_port_wait_eh(ap);
412}
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425
426static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev,
427 void __user *arg)
428{
429 struct ata_device *dev = ata_scsi_find_dev(ap, sdev);
430 u16 __user *dst = arg;
431 char buf[40];
432
433 if (!dev)
434 return -ENOMSG;
435
436 if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16)))
437 return -EFAULT;
438
439 ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN);
440 if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN))
441 return -EFAULT;
442
443 ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN);
444 if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN))
445 return -EFAULT;
446
447 ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN);
448 if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN))
449 return -EFAULT;
450
451 return 0;
452}
453
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464
465int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
466{
467 int rc = 0;
468 u8 scsi_cmd[MAX_COMMAND_SIZE];
469 u8 args[4], *argbuf = NULL, *sensebuf = NULL;
470 int argsize = 0;
471 enum dma_data_direction data_dir;
472 int cmd_result;
473
474 if (arg == NULL)
475 return -EINVAL;
476
477 if (copy_from_user(args, arg, sizeof(args)))
478 return -EFAULT;
479
480 sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO);
481 if (!sensebuf)
482 return -ENOMEM;
483
484 memset(scsi_cmd, 0, sizeof(scsi_cmd));
485
486 if (args[3]) {
487 argsize = ATA_SECT_SIZE * args[3];
488 argbuf = kmalloc(argsize, GFP_KERNEL);
489 if (argbuf == NULL) {
490 rc = -ENOMEM;
491 goto error;
492 }
493
494 scsi_cmd[1] = (4 << 1);
495 scsi_cmd[2] = 0x0e;
496
497 data_dir = DMA_FROM_DEVICE;
498 } else {
499 scsi_cmd[1] = (3 << 1);
500 scsi_cmd[2] = 0x20;
501 data_dir = DMA_NONE;
502 }
503
504 scsi_cmd[0] = ATA_16;
505
506 scsi_cmd[4] = args[2];
507 if (args[0] == ATA_CMD_SMART) {
508 scsi_cmd[6] = args[3];
509 scsi_cmd[8] = args[1];
510 scsi_cmd[10] = 0x4f;
511 scsi_cmd[12] = 0xc2;
512 } else {
513 scsi_cmd[6] = args[1];
514 }
515 scsi_cmd[14] = args[0];
516
517
518
519 cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize,
520 sensebuf, (10*HZ), 5, 0, NULL);
521
522 if (driver_byte(cmd_result) == DRIVER_SENSE) {
523 u8 *desc = sensebuf + 8;
524 cmd_result &= ~(0xFF<<24);
525
526
527
528 if (cmd_result & SAM_STAT_CHECK_CONDITION) {
529 struct scsi_sense_hdr sshdr;
530 scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE,
531 &sshdr);
532 if (sshdr.sense_key == 0 &&
533 sshdr.asc == 0 && sshdr.ascq == 0)
534 cmd_result &= ~SAM_STAT_CHECK_CONDITION;
535 }
536
537
538 if (sensebuf[0] == 0x72 &&
539 desc[0] == 0x09) {
540 args[0] = desc[13];
541 args[1] = desc[3];
542 args[2] = desc[5];
543 if (copy_to_user(arg, args, sizeof(args)))
544 rc = -EFAULT;
545 }
546 }
547
548
549 if (cmd_result) {
550 rc = -EIO;
551 goto error;
552 }
553
554 if ((argbuf)
555 && copy_to_user(arg + sizeof(args), argbuf, argsize))
556 rc = -EFAULT;
557error:
558 kfree(sensebuf);
559 kfree(argbuf);
560 return rc;
561}
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573
574int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
575{
576 int rc = 0;
577 u8 scsi_cmd[MAX_COMMAND_SIZE];
578 u8 args[7], *sensebuf = NULL;
579 int cmd_result;
580
581 if (arg == NULL)
582 return -EINVAL;
583
584 if (copy_from_user(args, arg, sizeof(args)))
585 return -EFAULT;
586
587 sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO);
588 if (!sensebuf)
589 return -ENOMEM;
590
591 memset(scsi_cmd, 0, sizeof(scsi_cmd));
592 scsi_cmd[0] = ATA_16;
593 scsi_cmd[1] = (3 << 1);
594 scsi_cmd[2] = 0x20;
595 scsi_cmd[4] = args[1];
596 scsi_cmd[6] = args[2];
597 scsi_cmd[8] = args[3];
598 scsi_cmd[10] = args[4];
599 scsi_cmd[12] = args[5];
600 scsi_cmd[13] = args[6] & 0x4f;
601 scsi_cmd[14] = args[0];
602
603
604
605 cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0,
606 sensebuf, (10*HZ), 5, 0, NULL);
607
608 if (driver_byte(cmd_result) == DRIVER_SENSE) {
609 u8 *desc = sensebuf + 8;
610 cmd_result &= ~(0xFF<<24);
611
612
613
614 if (cmd_result & SAM_STAT_CHECK_CONDITION) {
615 struct scsi_sense_hdr sshdr;
616 scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE,
617 &sshdr);
618 if (sshdr.sense_key == 0 &&
619 sshdr.asc == 0 && sshdr.ascq == 0)
620 cmd_result &= ~SAM_STAT_CHECK_CONDITION;
621 }
622
623
624 if (sensebuf[0] == 0x72 &&
625 desc[0] == 0x09) {
626 args[0] = desc[13];
627 args[1] = desc[3];
628 args[2] = desc[5];
629 args[3] = desc[7];
630 args[4] = desc[9];
631 args[5] = desc[11];
632 args[6] = desc[12];
633 if (copy_to_user(arg, args, sizeof(args)))
634 rc = -EFAULT;
635 }
636 }
637
638 if (cmd_result) {
639 rc = -EIO;
640 goto error;
641 }
642
643 error:
644 kfree(sensebuf);
645 return rc;
646}
647
648static int ata_ioc32(struct ata_port *ap)
649{
650 if (ap->flags & ATA_FLAG_PIO_DMA)
651 return 1;
652 if (ap->pflags & ATA_PFLAG_PIO32)
653 return 1;
654 return 0;
655}
656
657int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev,
658 int cmd, void __user *arg)
659{
660 int val = -EINVAL, rc = -EINVAL;
661 unsigned long flags;
662
663 switch (cmd) {
664 case ATA_IOC_GET_IO32:
665 spin_lock_irqsave(ap->lock, flags);
666 val = ata_ioc32(ap);
667 spin_unlock_irqrestore(ap->lock, flags);
668 if (copy_to_user(arg, &val, 1))
669 return -EFAULT;
670 return 0;
671
672 case ATA_IOC_SET_IO32:
673 val = (unsigned long) arg;
674 rc = 0;
675 spin_lock_irqsave(ap->lock, flags);
676 if (ap->pflags & ATA_PFLAG_PIO32CHANGE) {
677 if (val)
678 ap->pflags |= ATA_PFLAG_PIO32;
679 else
680 ap->pflags &= ~ATA_PFLAG_PIO32;
681 } else {
682 if (val != ata_ioc32(ap))
683 rc = -EINVAL;
684 }
685 spin_unlock_irqrestore(ap->lock, flags);
686 return rc;
687
688 case HDIO_GET_IDENTITY:
689 return ata_get_identity(ap, scsidev, arg);
690
691 case HDIO_DRIVE_CMD:
692 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
693 return -EACCES;
694 return ata_cmd_ioctl(scsidev, arg);
695
696 case HDIO_DRIVE_TASK:
697 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
698 return -EACCES;
699 return ata_task_ioctl(scsidev, arg);
700
701 default:
702 rc = -ENOTTY;
703 break;
704 }
705
706 return rc;
707}
708EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl);
709
710int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
711{
712 return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host),
713 scsidev, cmd, arg);
714}
715EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
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736static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev,
737 struct scsi_cmnd *cmd)
738{
739 struct ata_queued_cmd *qc;
740
741 qc = ata_qc_new_init(dev);
742 if (qc) {
743 qc->scsicmd = cmd;
744 qc->scsidone = cmd->scsi_done;
745
746 qc->sg = scsi_sglist(cmd);
747 qc->n_elem = scsi_sg_count(cmd);
748 } else {
749 cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1);
750 cmd->scsi_done(cmd);
751 }
752
753 return qc;
754}
755
756static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc)
757{
758 struct scsi_cmnd *scmd = qc->scsicmd;
759
760 qc->extrabytes = scmd->request->extra_len;
761 qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes;
762}
763
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776static void ata_dump_status(unsigned id, struct ata_taskfile *tf)
777{
778 u8 stat = tf->command, err = tf->feature;
779
780 printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat);
781 if (stat & ATA_BUSY) {
782 printk("Busy }\n");
783 } else {
784 if (stat & 0x40) printk("DriveReady ");
785 if (stat & 0x20) printk("DeviceFault ");
786 if (stat & 0x10) printk("SeekComplete ");
787 if (stat & 0x08) printk("DataRequest ");
788 if (stat & 0x04) printk("CorrectedError ");
789 if (stat & 0x02) printk("Index ");
790 if (stat & 0x01) printk("Error ");
791 printk("}\n");
792
793 if (err) {
794 printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err);
795 if (err & 0x04) printk("DriveStatusError ");
796 if (err & 0x80) {
797 if (err & 0x04) printk("BadCRC ");
798 else printk("Sector ");
799 }
800 if (err & 0x40) printk("UncorrectableError ");
801 if (err & 0x10) printk("SectorIdNotFound ");
802 if (err & 0x02) printk("TrackZeroNotFound ");
803 if (err & 0x01) printk("AddrMarkNotFound ");
804 printk("}\n");
805 }
806 }
807}
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk,
827 u8 *asc, u8 *ascq, int verbose)
828{
829 int i;
830
831
832 static const unsigned char sense_table[][4] = {
833
834 {0xd1, ABORTED_COMMAND, 0x00, 0x00},
835
836 {0xd0, ABORTED_COMMAND, 0x00, 0x00},
837
838 {0x61, HARDWARE_ERROR, 0x00, 0x00},
839
840 {0x84, ABORTED_COMMAND, 0x47, 0x00},
841
842 {0x37, NOT_READY, 0x04, 0x00},
843
844 {0x09, NOT_READY, 0x04, 0x00},
845
846 {0x01, MEDIUM_ERROR, 0x13, 0x00},
847
848 {0x02, HARDWARE_ERROR, 0x00, 0x00},
849
850 {0x04, ABORTED_COMMAND, 0x00, 0x00},
851
852 {0x08, NOT_READY, 0x04, 0x00},
853
854 {0x10, ABORTED_COMMAND, 0x14, 0x00},
855
856 {0x08, NOT_READY, 0x04, 0x00},
857
858 {0x40, MEDIUM_ERROR, 0x11, 0x04},
859
860 {0x80, MEDIUM_ERROR, 0x11, 0x04},
861 {0xFF, 0xFF, 0xFF, 0xFF},
862 };
863 static const unsigned char stat_table[][4] = {
864
865 {0x80, ABORTED_COMMAND, 0x47, 0x00},
866 {0x20, HARDWARE_ERROR, 0x00, 0x00},
867 {0x08, ABORTED_COMMAND, 0x47, 0x00},
868 {0x04, RECOVERED_ERROR, 0x11, 0x00},
869 {0xFF, 0xFF, 0xFF, 0xFF},
870 };
871
872
873
874
875 if (drv_stat & ATA_BUSY) {
876 drv_err = 0;
877 }
878
879 if (drv_err) {
880
881 for (i = 0; sense_table[i][0] != 0xFF; i++) {
882
883 if ((sense_table[i][0] & drv_err) ==
884 sense_table[i][0]) {
885 *sk = sense_table[i][1];
886 *asc = sense_table[i][2];
887 *ascq = sense_table[i][3];
888 goto translate_done;
889 }
890 }
891
892 if (verbose)
893 printk(KERN_WARNING "ata%u: no sense translation for "
894 "error 0x%02x\n", id, drv_err);
895 }
896
897
898 for (i = 0; stat_table[i][0] != 0xFF; i++) {
899 if (stat_table[i][0] & drv_stat) {
900 *sk = stat_table[i][1];
901 *asc = stat_table[i][2];
902 *ascq = stat_table[i][3];
903 goto translate_done;
904 }
905 }
906
907 if (verbose)
908 printk(KERN_WARNING "ata%u: no sense translation for "
909 "status: 0x%02x\n", id, drv_stat);
910
911
912
913 *sk = ABORTED_COMMAND;
914 *asc = 0x00;
915 *ascq = 0x00;
916
917 translate_done:
918 if (verbose)
919 printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x "
920 "to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n",
921 id, drv_stat, drv_err, *sk, *asc, *ascq);
922 return;
923}
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
939{
940 struct scsi_cmnd *cmd = qc->scsicmd;
941 struct ata_taskfile *tf = &qc->result_tf;
942 unsigned char *sb = cmd->sense_buffer;
943 unsigned char *desc = sb + 8;
944 int verbose = qc->ap->ops->error_handler == NULL;
945
946 memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
947
948 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
949
950
951
952
953
954 if (qc->err_mask ||
955 tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
956 ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
957 &sb[1], &sb[2], &sb[3], verbose);
958 sb[1] &= 0x0f;
959 }
960
961
962
963
964 sb[0] = 0x72;
965
966 desc[0] = 0x09;
967
968
969 sb[7] = 14;
970 desc[1] = 12;
971
972
973
974
975 desc[2] = 0x00;
976 desc[3] = tf->feature;
977 desc[5] = tf->nsect;
978 desc[7] = tf->lbal;
979 desc[9] = tf->lbam;
980 desc[11] = tf->lbah;
981 desc[12] = tf->device;
982 desc[13] = tf->command;
983
984
985
986
987
988 if (tf->flags & ATA_TFLAG_LBA48) {
989 desc[2] |= 0x01;
990 desc[4] = tf->hob_nsect;
991 desc[6] = tf->hob_lbal;
992 desc[8] = tf->hob_lbam;
993 desc[10] = tf->hob_lbah;
994 }
995}
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007static void ata_gen_ata_sense(struct ata_queued_cmd *qc)
1008{
1009 struct ata_device *dev = qc->dev;
1010 struct scsi_cmnd *cmd = qc->scsicmd;
1011 struct ata_taskfile *tf = &qc->result_tf;
1012 unsigned char *sb = cmd->sense_buffer;
1013 unsigned char *desc = sb + 8;
1014 int verbose = qc->ap->ops->error_handler == NULL;
1015 u64 block;
1016
1017 memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
1018
1019 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
1020
1021
1022 sb[0] = 0x72;
1023
1024
1025
1026
1027 if (qc->err_mask ||
1028 tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
1029 ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
1030 &sb[1], &sb[2], &sb[3], verbose);
1031 sb[1] &= 0x0f;
1032 }
1033
1034 block = ata_tf_read_block(&qc->result_tf, dev);
1035
1036
1037 sb[7] = 12;
1038 desc[0] = 0x00;
1039 desc[1] = 10;
1040
1041 desc[2] |= 0x80;
1042 desc[6] = block >> 40;
1043 desc[7] = block >> 32;
1044 desc[8] = block >> 24;
1045 desc[9] = block >> 16;
1046 desc[10] = block >> 8;
1047 desc[11] = block;
1048}
1049
1050static void ata_scsi_sdev_config(struct scsi_device *sdev)
1051{
1052 sdev->use_10_for_rw = 1;
1053 sdev->use_10_for_ms = 1;
1054
1055
1056
1057
1058
1059
1060 sdev->max_device_blocked = 1;
1061}
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078static int atapi_drain_needed(struct request *rq)
1079{
1080 if (likely(rq->cmd_type != REQ_TYPE_BLOCK_PC))
1081 return 0;
1082
1083 if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_WRITE))
1084 return 0;
1085
1086 return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC;
1087}
1088
1089static int ata_scsi_dev_config(struct scsi_device *sdev,
1090 struct ata_device *dev)
1091{
1092 if (!ata_id_has_unload(dev->id))
1093 dev->flags |= ATA_DFLAG_NO_UNLOAD;
1094
1095
1096 blk_queue_max_hw_sectors(sdev->request_queue, dev->max_sectors);
1097
1098 if (dev->class == ATA_DEV_ATAPI) {
1099 struct request_queue *q = sdev->request_queue;
1100 void *buf;
1101
1102 sdev->sector_size = ATA_SECT_SIZE;
1103
1104
1105 blk_queue_update_dma_pad(sdev->request_queue,
1106 ATA_DMA_PAD_SZ - 1);
1107
1108
1109 buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL);
1110 if (!buf) {
1111 ata_dev_printk(dev, KERN_ERR,
1112 "drain buffer allocation failed\n");
1113 return -ENOMEM;
1114 }
1115
1116 blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN);
1117 } else {
1118 sdev->sector_size = ata_id_logical_sector_size(dev->id);
1119 sdev->manage_start_stop = 1;
1120 }
1121
1122
1123
1124
1125
1126
1127
1128
1129 if (sdev->sector_size > PAGE_SIZE)
1130 ata_dev_printk(dev, KERN_WARNING,
1131 "sector_size=%u > PAGE_SIZE, PIO may malfunction\n",
1132 sdev->sector_size);
1133
1134 blk_queue_update_dma_alignment(sdev->request_queue,
1135 sdev->sector_size - 1);
1136
1137 if (dev->flags & ATA_DFLAG_AN)
1138 set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events);
1139
1140 if (dev->flags & ATA_DFLAG_NCQ) {
1141 int depth;
1142
1143 depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id));
1144 depth = min(ATA_MAX_QUEUE - 1, depth);
1145 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, depth);
1146 }
1147
1148 dev->sdev = sdev;
1149 return 0;
1150}
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164int ata_scsi_slave_config(struct scsi_device *sdev)
1165{
1166 struct ata_port *ap = ata_shost_to_port(sdev->host);
1167 struct ata_device *dev = __ata_scsi_find_dev(ap, sdev);
1168 int rc = 0;
1169
1170 ata_scsi_sdev_config(sdev);
1171
1172 if (dev)
1173 rc = ata_scsi_dev_config(sdev, dev);
1174
1175 return rc;
1176}
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192void ata_scsi_slave_destroy(struct scsi_device *sdev)
1193{
1194 struct ata_port *ap = ata_shost_to_port(sdev->host);
1195 struct request_queue *q = sdev->request_queue;
1196 unsigned long flags;
1197 struct ata_device *dev;
1198
1199 if (!ap->ops->error_handler)
1200 return;
1201
1202 spin_lock_irqsave(ap->lock, flags);
1203 dev = __ata_scsi_find_dev(ap, sdev);
1204 if (dev && dev->sdev) {
1205
1206 dev->sdev = NULL;
1207 dev->flags |= ATA_DFLAG_DETACH;
1208 ata_port_schedule_eh(ap);
1209 }
1210 spin_unlock_irqrestore(ap->lock, flags);
1211
1212 kfree(q->dma_drain_buffer);
1213 q->dma_drain_buffer = NULL;
1214 q->dma_drain_size = 0;
1215}
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth,
1234 int reason)
1235{
1236 struct ata_port *ap = ata_shost_to_port(sdev->host);
1237 struct ata_device *dev;
1238 unsigned long flags;
1239
1240 if (reason != SCSI_QDEPTH_DEFAULT)
1241 return -EOPNOTSUPP;
1242
1243 if (queue_depth < 1 || queue_depth == sdev->queue_depth)
1244 return sdev->queue_depth;
1245
1246 dev = ata_scsi_find_dev(ap, sdev);
1247 if (!dev || !ata_dev_enabled(dev))
1248 return sdev->queue_depth;
1249
1250
1251 spin_lock_irqsave(ap->lock, flags);
1252 dev->flags &= ~ATA_DFLAG_NCQ_OFF;
1253 if (queue_depth == 1 || !ata_ncq_enabled(dev)) {
1254 dev->flags |= ATA_DFLAG_NCQ_OFF;
1255 queue_depth = 1;
1256 }
1257 spin_unlock_irqrestore(ap->lock, flags);
1258
1259
1260 queue_depth = min(queue_depth, sdev->host->can_queue);
1261 queue_depth = min(queue_depth, ata_id_queue_depth(dev->id));
1262 queue_depth = min(queue_depth, ATA_MAX_QUEUE - 1);
1263
1264 if (sdev->queue_depth == queue_depth)
1265 return -EINVAL;
1266
1267 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, queue_depth);
1268 return queue_depth;
1269}
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
1287{
1288 struct scsi_cmnd *scmd = qc->scsicmd;
1289 struct ata_taskfile *tf = &qc->tf;
1290 const u8 *cdb = scmd->cmnd;
1291
1292 if (scmd->cmd_len < 5)
1293 goto invalid_fld;
1294
1295 tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
1296 tf->protocol = ATA_PROT_NODATA;
1297 if (cdb[1] & 0x1) {
1298 ;
1299 }
1300 if (cdb[4] & 0x2)
1301 goto invalid_fld;
1302 if (((cdb[4] >> 4) & 0xf) != 0)
1303 goto invalid_fld;
1304
1305 if (cdb[4] & 0x1) {
1306 tf->nsect = 1;
1307
1308 if (qc->dev->flags & ATA_DFLAG_LBA) {
1309 tf->flags |= ATA_TFLAG_LBA;
1310
1311 tf->lbah = 0x0;
1312 tf->lbam = 0x0;
1313 tf->lbal = 0x0;
1314 tf->device |= ATA_LBA;
1315 } else {
1316
1317 tf->lbal = 0x1;
1318 tf->lbam = 0x0;
1319 tf->lbah = 0x0;
1320 }
1321
1322 tf->command = ATA_CMD_VERIFY;
1323 } else {
1324
1325
1326
1327 if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) &&
1328 system_state == SYSTEM_POWER_OFF)
1329 goto skip;
1330
1331 if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) &&
1332 system_entering_hibernation())
1333 goto skip;
1334
1335
1336 tf->command = ATA_CMD_STANDBYNOW1;
1337 }
1338
1339
1340
1341
1342
1343
1344
1345
1346 return 0;
1347
1348 invalid_fld:
1349 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
1350
1351 return 1;
1352 skip:
1353 scmd->result = SAM_STAT_GOOD;
1354 return 1;
1355}
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc)
1372{
1373 struct ata_taskfile *tf = &qc->tf;
1374
1375 tf->flags |= ATA_TFLAG_DEVICE;
1376 tf->protocol = ATA_PROT_NODATA;
1377
1378 if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT)
1379 tf->command = ATA_CMD_FLUSH_EXT;
1380 else
1381 tf->command = ATA_CMD_FLUSH;
1382
1383
1384 qc->flags |= ATA_QCFLAG_IO;
1385
1386 return 0;
1387}
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
1400{
1401 u64 lba = 0;
1402 u32 len;
1403
1404 VPRINTK("six-byte command\n");
1405
1406 lba |= ((u64)(cdb[1] & 0x1f)) << 16;
1407 lba |= ((u64)cdb[2]) << 8;
1408 lba |= ((u64)cdb[3]);
1409
1410 len = cdb[4];
1411
1412 *plba = lba;
1413 *plen = len;
1414}
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
1427{
1428 u64 lba = 0;
1429 u32 len = 0;
1430
1431 VPRINTK("ten-byte command\n");
1432
1433 lba |= ((u64)cdb[2]) << 24;
1434 lba |= ((u64)cdb[3]) << 16;
1435 lba |= ((u64)cdb[4]) << 8;
1436 lba |= ((u64)cdb[5]);
1437
1438 len |= ((u32)cdb[7]) << 8;
1439 len |= ((u32)cdb[8]);
1440
1441 *plba = lba;
1442 *plen = len;
1443}
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
1456{
1457 u64 lba = 0;
1458 u32 len = 0;
1459
1460 VPRINTK("sixteen-byte command\n");
1461
1462 lba |= ((u64)cdb[2]) << 56;
1463 lba |= ((u64)cdb[3]) << 48;
1464 lba |= ((u64)cdb[4]) << 40;
1465 lba |= ((u64)cdb[5]) << 32;
1466 lba |= ((u64)cdb[6]) << 24;
1467 lba |= ((u64)cdb[7]) << 16;
1468 lba |= ((u64)cdb[8]) << 8;
1469 lba |= ((u64)cdb[9]);
1470
1471 len |= ((u32)cdb[10]) << 24;
1472 len |= ((u32)cdb[11]) << 16;
1473 len |= ((u32)cdb[12]) << 8;
1474 len |= ((u32)cdb[13]);
1475
1476 *plba = lba;
1477 *plen = len;
1478}
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc)
1493{
1494 struct scsi_cmnd *scmd = qc->scsicmd;
1495 struct ata_taskfile *tf = &qc->tf;
1496 struct ata_device *dev = qc->dev;
1497 u64 dev_sectors = qc->dev->n_sectors;
1498 const u8 *cdb = scmd->cmnd;
1499 u64 block;
1500 u32 n_block;
1501
1502 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
1503 tf->protocol = ATA_PROT_NODATA;
1504
1505 if (cdb[0] == VERIFY) {
1506 if (scmd->cmd_len < 10)
1507 goto invalid_fld;
1508 scsi_10_lba_len(cdb, &block, &n_block);
1509 } else if (cdb[0] == VERIFY_16) {
1510 if (scmd->cmd_len < 16)
1511 goto invalid_fld;
1512 scsi_16_lba_len(cdb, &block, &n_block);
1513 } else
1514 goto invalid_fld;
1515
1516 if (!n_block)
1517 goto nothing_to_do;
1518 if (block >= dev_sectors)
1519 goto out_of_range;
1520 if ((block + n_block) > dev_sectors)
1521 goto out_of_range;
1522
1523 if (dev->flags & ATA_DFLAG_LBA) {
1524 tf->flags |= ATA_TFLAG_LBA;
1525
1526 if (lba_28_ok(block, n_block)) {
1527
1528 tf->command = ATA_CMD_VERIFY;
1529 tf->device |= (block >> 24) & 0xf;
1530 } else if (lba_48_ok(block, n_block)) {
1531 if (!(dev->flags & ATA_DFLAG_LBA48))
1532 goto out_of_range;
1533
1534
1535 tf->flags |= ATA_TFLAG_LBA48;
1536 tf->command = ATA_CMD_VERIFY_EXT;
1537
1538 tf->hob_nsect = (n_block >> 8) & 0xff;
1539
1540 tf->hob_lbah = (block >> 40) & 0xff;
1541 tf->hob_lbam = (block >> 32) & 0xff;
1542 tf->hob_lbal = (block >> 24) & 0xff;
1543 } else
1544
1545 goto out_of_range;
1546
1547 tf->nsect = n_block & 0xff;
1548
1549 tf->lbah = (block >> 16) & 0xff;
1550 tf->lbam = (block >> 8) & 0xff;
1551 tf->lbal = block & 0xff;
1552
1553 tf->device |= ATA_LBA;
1554 } else {
1555
1556 u32 sect, head, cyl, track;
1557
1558 if (!lba_28_ok(block, n_block))
1559 goto out_of_range;
1560
1561
1562 track = (u32)block / dev->sectors;
1563 cyl = track / dev->heads;
1564 head = track % dev->heads;
1565 sect = (u32)block % dev->sectors + 1;
1566
1567 DPRINTK("block %u track %u cyl %u head %u sect %u\n",
1568 (u32)block, track, cyl, head, sect);
1569
1570
1571
1572
1573
1574 if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
1575 goto out_of_range;
1576
1577 tf->command = ATA_CMD_VERIFY;
1578 tf->nsect = n_block & 0xff;
1579 tf->lbal = sect;
1580 tf->lbam = cyl;
1581 tf->lbah = cyl >> 8;
1582 tf->device |= head;
1583 }
1584
1585 return 0;
1586
1587invalid_fld:
1588 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
1589
1590 return 1;
1591
1592out_of_range:
1593 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0);
1594
1595 return 1;
1596
1597nothing_to_do:
1598 scmd->result = SAM_STAT_GOOD;
1599 return 1;
1600}
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc)
1621{
1622 struct scsi_cmnd *scmd = qc->scsicmd;
1623 const u8 *cdb = scmd->cmnd;
1624 unsigned int tf_flags = 0;
1625 u64 block;
1626 u32 n_block;
1627 int rc;
1628
1629 if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16)
1630 tf_flags |= ATA_TFLAG_WRITE;
1631
1632
1633 switch (cdb[0]) {
1634 case READ_10:
1635 case WRITE_10:
1636 if (unlikely(scmd->cmd_len < 10))
1637 goto invalid_fld;
1638 scsi_10_lba_len(cdb, &block, &n_block);
1639 if (unlikely(cdb[1] & (1 << 3)))
1640 tf_flags |= ATA_TFLAG_FUA;
1641 break;
1642 case READ_6:
1643 case WRITE_6:
1644 if (unlikely(scmd->cmd_len < 6))
1645 goto invalid_fld;
1646 scsi_6_lba_len(cdb, &block, &n_block);
1647
1648
1649
1650
1651 if (!n_block)
1652 n_block = 256;
1653 break;
1654 case READ_16:
1655 case WRITE_16:
1656 if (unlikely(scmd->cmd_len < 16))
1657 goto invalid_fld;
1658 scsi_16_lba_len(cdb, &block, &n_block);
1659 if (unlikely(cdb[1] & (1 << 3)))
1660 tf_flags |= ATA_TFLAG_FUA;
1661 break;
1662 default:
1663 DPRINTK("no-byte command\n");
1664 goto invalid_fld;
1665 }
1666
1667
1668 if (!n_block)
1669
1670
1671
1672
1673
1674
1675
1676 goto nothing_to_do;
1677
1678 qc->flags |= ATA_QCFLAG_IO;
1679 qc->nbytes = n_block * scmd->device->sector_size;
1680
1681 rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags,
1682 qc->tag);
1683 if (likely(rc == 0))
1684 return 0;
1685
1686 if (rc == -ERANGE)
1687 goto out_of_range;
1688
1689invalid_fld:
1690 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
1691
1692 return 1;
1693
1694out_of_range:
1695 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0);
1696
1697 return 1;
1698
1699nothing_to_do:
1700 scmd->result = SAM_STAT_GOOD;
1701 return 1;
1702}
1703
1704static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
1705{
1706 struct ata_port *ap = qc->ap;
1707 struct scsi_cmnd *cmd = qc->scsicmd;
1708 u8 *cdb = cmd->cmnd;
1709 int need_sense = (qc->err_mask != 0);
1710
1711
1712
1713
1714
1715
1716
1717
1718 if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) &&
1719 ((cdb[2] & 0x20) || need_sense)) {
1720 ata_gen_passthru_sense(qc);
1721 } else {
1722 if (!need_sense) {
1723 cmd->result = SAM_STAT_GOOD;
1724 } else {
1725
1726
1727
1728
1729
1730
1731 ata_gen_ata_sense(qc);
1732 }
1733 }
1734
1735 if (need_sense && !ap->ops->error_handler)
1736 ata_dump_status(ap->print_id, &qc->result_tf);
1737
1738 qc->scsidone(cmd);
1739
1740 ata_qc_free(qc);
1741}
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd,
1770 ata_xlat_func_t xlat_func)
1771{
1772 struct ata_port *ap = dev->link->ap;
1773 struct ata_queued_cmd *qc;
1774 int rc;
1775
1776 VPRINTK("ENTER\n");
1777
1778 qc = ata_scsi_qc_new(dev, cmd);
1779 if (!qc)
1780 goto err_mem;
1781
1782
1783 if (cmd->sc_data_direction == DMA_FROM_DEVICE ||
1784 cmd->sc_data_direction == DMA_TO_DEVICE) {
1785 if (unlikely(scsi_bufflen(cmd) < 1)) {
1786 ata_dev_printk(dev, KERN_WARNING,
1787 "WARNING: zero len r/w req\n");
1788 goto err_did;
1789 }
1790
1791 ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd));
1792
1793 qc->dma_dir = cmd->sc_data_direction;
1794 }
1795
1796 qc->complete_fn = ata_scsi_qc_complete;
1797
1798 if (xlat_func(qc))
1799 goto early_finish;
1800
1801 if (ap->ops->qc_defer) {
1802 if ((rc = ap->ops->qc_defer(qc)))
1803 goto defer;
1804 }
1805
1806
1807 ata_qc_issue(qc);
1808
1809 VPRINTK("EXIT\n");
1810 return 0;
1811
1812early_finish:
1813 ata_qc_free(qc);
1814 cmd->scsi_done(cmd);
1815 DPRINTK("EXIT - early finish (good or error)\n");
1816 return 0;
1817
1818err_did:
1819 ata_qc_free(qc);
1820 cmd->result = (DID_ERROR << 16);
1821 cmd->scsi_done(cmd);
1822err_mem:
1823 DPRINTK("EXIT - internal\n");
1824 return 0;
1825
1826defer:
1827 ata_qc_free(qc);
1828 DPRINTK("EXIT - defer\n");
1829 if (rc == ATA_DEFER_LINK)
1830 return SCSI_MLQUEUE_DEVICE_BUSY;
1831 else
1832 return SCSI_MLQUEUE_HOST_BUSY;
1833}
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in,
1850 unsigned long *flags)
1851{
1852 spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags);
1853
1854 memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE);
1855 if (copy_in)
1856 sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
1857 ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE);
1858 return ata_scsi_rbuf;
1859}
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out,
1874 unsigned long *flags)
1875{
1876 if (copy_out)
1877 sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
1878 ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE);
1879 spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags);
1880}
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897static void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
1898 unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf))
1899{
1900 u8 *rbuf;
1901 unsigned int rc;
1902 struct scsi_cmnd *cmd = args->cmd;
1903 unsigned long flags;
1904
1905 rbuf = ata_scsi_rbuf_get(cmd, false, &flags);
1906 rc = actor(args, rbuf);
1907 ata_scsi_rbuf_put(cmd, rc == 0, &flags);
1908
1909 if (rc == 0)
1910 cmd->result = SAM_STAT_GOOD;
1911 args->done(cmd);
1912}
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
1926{
1927 const u8 versions[] = {
1928 0x60,
1929
1930 0x03,
1931 0x20,
1932
1933 0x02,
1934 0x60
1935 };
1936 u8 hdr[] = {
1937 TYPE_DISK,
1938 0,
1939 0x5,
1940 2,
1941 95 - 4
1942 };
1943
1944 VPRINTK("ENTER\n");
1945
1946
1947 if (ata_id_removeable(args->id))
1948 hdr[1] |= (1 << 7);
1949
1950 memcpy(rbuf, hdr, sizeof(hdr));
1951 memcpy(&rbuf[8], "ATA ", 8);
1952 ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16);
1953 ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4);
1954
1955 if (rbuf[32] == 0 || rbuf[32] == ' ')
1956 memcpy(&rbuf[32], "n/a ", 4);
1957
1958 memcpy(rbuf + 59, versions, sizeof(versions));
1959
1960 return 0;
1961}
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf)
1974{
1975 const u8 pages[] = {
1976 0x00,
1977 0x80,
1978 0x83,
1979 0x89,
1980 0xb0,
1981 0xb1,
1982 0xb2,
1983 };
1984
1985 rbuf[3] = sizeof(pages);
1986 memcpy(rbuf + 4, pages, sizeof(pages));
1987 return 0;
1988}
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf)
2001{
2002 const u8 hdr[] = {
2003 0,
2004 0x80,
2005 0,
2006 ATA_ID_SERNO_LEN,
2007 };
2008
2009 memcpy(rbuf, hdr, sizeof(hdr));
2010 ata_id_string(args->id, (unsigned char *) &rbuf[4],
2011 ATA_ID_SERNO, ATA_ID_SERNO_LEN);
2012 return 0;
2013}
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf)
2029{
2030 const int sat_model_serial_desc_len = 68;
2031 int num;
2032
2033 rbuf[1] = 0x83;
2034 num = 4;
2035
2036
2037 rbuf[num + 0] = 2;
2038 rbuf[num + 3] = ATA_ID_SERNO_LEN;
2039 num += 4;
2040 ata_id_string(args->id, (unsigned char *) rbuf + num,
2041 ATA_ID_SERNO, ATA_ID_SERNO_LEN);
2042 num += ATA_ID_SERNO_LEN;
2043
2044
2045
2046 rbuf[num + 0] = 2;
2047 rbuf[num + 1] = 1;
2048 rbuf[num + 3] = sat_model_serial_desc_len;
2049 num += 4;
2050 memcpy(rbuf + num, "ATA ", 8);
2051 num += 8;
2052 ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD,
2053 ATA_ID_PROD_LEN);
2054 num += ATA_ID_PROD_LEN;
2055 ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO,
2056 ATA_ID_SERNO_LEN);
2057 num += ATA_ID_SERNO_LEN;
2058
2059 rbuf[3] = num - 4;
2060 return 0;
2061}
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf)
2074{
2075 struct ata_taskfile tf;
2076
2077 memset(&tf, 0, sizeof(tf));
2078
2079 rbuf[1] = 0x89;
2080 rbuf[2] = (0x238 >> 8);
2081 rbuf[3] = (0x238 & 0xff);
2082
2083 memcpy(&rbuf[8], "linux ", 8);
2084 memcpy(&rbuf[16], "libata ", 16);
2085 memcpy(&rbuf[32], DRV_VERSION, 4);
2086 ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4);
2087
2088
2089
2090 tf.command = ATA_DRDY;
2091 tf.lbal = 0x1;
2092 tf.nsect = 0x1;
2093
2094 ata_tf_to_fis(&tf, 0, 1, &rbuf[36]);
2095 rbuf[36] = 0x34;
2096
2097 rbuf[56] = ATA_CMD_ID_ATA;
2098
2099 memcpy(&rbuf[60], &args->id[0], 512);
2100 return 0;
2101}
2102
2103static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf)
2104{
2105 u16 min_io_sectors;
2106
2107 rbuf[1] = 0xb0;
2108 rbuf[3] = 0x3c;
2109
2110
2111
2112
2113
2114
2115
2116
2117 min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id);
2118 put_unaligned_be16(min_io_sectors, &rbuf[6]);
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129 if (ata_id_has_trim(args->id)) {
2130 put_unaligned_be32(65535 * 512 / 8, &rbuf[20]);
2131 put_unaligned_be32(1, &rbuf[28]);
2132 }
2133
2134 return 0;
2135}
2136
2137static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf)
2138{
2139 int form_factor = ata_id_form_factor(args->id);
2140 int media_rotation_rate = ata_id_rotation_rate(args->id);
2141
2142 rbuf[1] = 0xb1;
2143 rbuf[3] = 0x3c;
2144 rbuf[4] = media_rotation_rate >> 8;
2145 rbuf[5] = media_rotation_rate;
2146 rbuf[7] = form_factor;
2147
2148 return 0;
2149}
2150
2151static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf)
2152{
2153
2154 rbuf[1] = 0xb2;
2155 rbuf[3] = 0x4;
2156 rbuf[5] = 1 << 6;
2157
2158 return 0;
2159}
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172static unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf)
2173{
2174 VPRINTK("ENTER\n");
2175 return 0;
2176}
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190static unsigned int ata_msense_caching(u16 *id, u8 *buf)
2191{
2192 memcpy(buf, def_cache_mpage, sizeof(def_cache_mpage));
2193 if (ata_id_wcache_enabled(id))
2194 buf[2] |= (1 << 2);
2195 if (!ata_id_rahead_enabled(id))
2196 buf[12] |= (1 << 5);
2197 return sizeof(def_cache_mpage);
2198}
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209static unsigned int ata_msense_ctl_mode(u8 *buf)
2210{
2211 memcpy(buf, def_control_mpage, sizeof(def_control_mpage));
2212 return sizeof(def_control_mpage);
2213}
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224static unsigned int ata_msense_rw_recovery(u8 *buf)
2225{
2226 memcpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage));
2227 return sizeof(def_rw_recovery_mpage);
2228}
2229
2230
2231
2232
2233
2234static int ata_dev_supports_fua(u16 *id)
2235{
2236 unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1];
2237
2238 if (!libata_fua)
2239 return 0;
2240 if (!ata_id_has_fua(id))
2241 return 0;
2242
2243 ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model));
2244 ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw));
2245
2246 if (strcmp(model, "Maxtor"))
2247 return 1;
2248 if (strcmp(fw, "BANC1G10"))
2249 return 1;
2250
2251 return 0;
2252}
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf)
2267{
2268 struct ata_device *dev = args->dev;
2269 u8 *scsicmd = args->cmd->cmnd, *p = rbuf;
2270 const u8 sat_blk_desc[] = {
2271 0, 0, 0, 0,
2272 0,
2273 0, 0x2, 0x0
2274 };
2275 u8 pg, spg;
2276 unsigned int ebd, page_control, six_byte;
2277 u8 dpofua;
2278
2279 VPRINTK("ENTER\n");
2280
2281 six_byte = (scsicmd[0] == MODE_SENSE);
2282 ebd = !(scsicmd[1] & 0x8);
2283
2284
2285
2286
2287 page_control = scsicmd[2] >> 6;
2288 switch (page_control) {
2289 case 0:
2290 break;
2291 case 3:
2292 goto saving_not_supp;
2293 case 1:
2294 case 2:
2295 default:
2296 goto invalid_fld;
2297 }
2298
2299 if (six_byte)
2300 p += 4 + (ebd ? 8 : 0);
2301 else
2302 p += 8 + (ebd ? 8 : 0);
2303
2304 pg = scsicmd[2] & 0x3f;
2305 spg = scsicmd[3];
2306
2307
2308
2309
2310 if (spg && (spg != ALL_SUB_MPAGES))
2311 goto invalid_fld;
2312
2313 switch(pg) {
2314 case RW_RECOVERY_MPAGE:
2315 p += ata_msense_rw_recovery(p);
2316 break;
2317
2318 case CACHE_MPAGE:
2319 p += ata_msense_caching(args->id, p);
2320 break;
2321
2322 case CONTROL_MPAGE:
2323 p += ata_msense_ctl_mode(p);
2324 break;
2325
2326 case ALL_MPAGES:
2327 p += ata_msense_rw_recovery(p);
2328 p += ata_msense_caching(args->id, p);
2329 p += ata_msense_ctl_mode(p);
2330 break;
2331
2332 default:
2333 goto invalid_fld;
2334 }
2335
2336 dpofua = 0;
2337 if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) &&
2338 (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count))
2339 dpofua = 1 << 4;
2340
2341 if (six_byte) {
2342 rbuf[0] = p - rbuf - 1;
2343 rbuf[2] |= dpofua;
2344 if (ebd) {
2345 rbuf[3] = sizeof(sat_blk_desc);
2346 memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc));
2347 }
2348 } else {
2349 unsigned int output_len = p - rbuf - 2;
2350
2351 rbuf[0] = output_len >> 8;
2352 rbuf[1] = output_len;
2353 rbuf[3] |= dpofua;
2354 if (ebd) {
2355 rbuf[7] = sizeof(sat_blk_desc);
2356 memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc));
2357 }
2358 }
2359 return 0;
2360
2361invalid_fld:
2362 ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0);
2363
2364 return 1;
2365
2366saving_not_supp:
2367 ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0);
2368
2369 return 1;
2370}
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf)
2383{
2384 struct ata_device *dev = args->dev;
2385 u64 last_lba = dev->n_sectors - 1;
2386 u32 sector_size;
2387 u8 log2_per_phys;
2388 u16 lowest_aligned;
2389
2390 sector_size = ata_id_logical_sector_size(dev->id);
2391 log2_per_phys = ata_id_log2_per_physical_sector(dev->id);
2392 lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys);
2393
2394 VPRINTK("ENTER\n");
2395
2396 if (args->cmd->cmnd[0] == READ_CAPACITY) {
2397 if (last_lba >= 0xffffffffULL)
2398 last_lba = 0xffffffff;
2399
2400
2401 rbuf[0] = last_lba >> (8 * 3);
2402 rbuf[1] = last_lba >> (8 * 2);
2403 rbuf[2] = last_lba >> (8 * 1);
2404 rbuf[3] = last_lba;
2405
2406
2407 rbuf[4] = sector_size >> (8 * 3);
2408 rbuf[5] = sector_size >> (8 * 2);
2409 rbuf[6] = sector_size >> (8 * 1);
2410 rbuf[7] = sector_size;
2411 } else {
2412
2413 rbuf[0] = last_lba >> (8 * 7);
2414 rbuf[1] = last_lba >> (8 * 6);
2415 rbuf[2] = last_lba >> (8 * 5);
2416 rbuf[3] = last_lba >> (8 * 4);
2417 rbuf[4] = last_lba >> (8 * 3);
2418 rbuf[5] = last_lba >> (8 * 2);
2419 rbuf[6] = last_lba >> (8 * 1);
2420 rbuf[7] = last_lba;
2421
2422
2423 rbuf[ 8] = sector_size >> (8 * 3);
2424 rbuf[ 9] = sector_size >> (8 * 2);
2425 rbuf[10] = sector_size >> (8 * 1);
2426 rbuf[11] = sector_size;
2427
2428 rbuf[12] = 0;
2429 rbuf[13] = log2_per_phys;
2430 rbuf[14] = (lowest_aligned >> 8) & 0x3f;
2431 rbuf[15] = lowest_aligned;
2432
2433 if (ata_id_has_trim(args->id)) {
2434 rbuf[14] |= 0x80;
2435
2436 if (ata_id_has_zero_after_trim(args->id))
2437 rbuf[14] |= 0x40;
2438 }
2439 }
2440
2441 return 0;
2442}
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf)
2455{
2456 VPRINTK("ENTER\n");
2457 rbuf[3] = 8;
2458
2459 return 0;
2460}
2461
2462static void atapi_sense_complete(struct ata_queued_cmd *qc)
2463{
2464 if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) {
2465
2466
2467
2468
2469
2470 ata_gen_passthru_sense(qc);
2471 }
2472
2473 qc->scsidone(qc->scsicmd);
2474 ata_qc_free(qc);
2475}
2476
2477
2478static inline int ata_pio_use_silly(struct ata_port *ap)
2479{
2480 return (ap->flags & ATA_FLAG_PIO_DMA);
2481}
2482
2483static void atapi_request_sense(struct ata_queued_cmd *qc)
2484{
2485 struct ata_port *ap = qc->ap;
2486 struct scsi_cmnd *cmd = qc->scsicmd;
2487
2488 DPRINTK("ATAPI request sense\n");
2489
2490
2491 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2492
2493#ifdef CONFIG_ATA_SFF
2494 if (ap->ops->sff_tf_read)
2495 ap->ops->sff_tf_read(ap, &qc->tf);
2496#endif
2497
2498
2499 cmd->sense_buffer[0] = 0x70;
2500 cmd->sense_buffer[2] = qc->tf.feature >> 4;
2501
2502 ata_qc_reinit(qc);
2503
2504
2505 sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
2506 ata_sg_init(qc, &qc->sgent, 1);
2507 qc->dma_dir = DMA_FROM_DEVICE;
2508
2509 memset(&qc->cdb, 0, qc->dev->cdb_len);
2510 qc->cdb[0] = REQUEST_SENSE;
2511 qc->cdb[4] = SCSI_SENSE_BUFFERSIZE;
2512
2513 qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
2514 qc->tf.command = ATA_CMD_PACKET;
2515
2516 if (ata_pio_use_silly(ap)) {
2517 qc->tf.protocol = ATAPI_PROT_DMA;
2518 qc->tf.feature |= ATAPI_PKT_DMA;
2519 } else {
2520 qc->tf.protocol = ATAPI_PROT_PIO;
2521 qc->tf.lbam = SCSI_SENSE_BUFFERSIZE;
2522 qc->tf.lbah = 0;
2523 }
2524 qc->nbytes = SCSI_SENSE_BUFFERSIZE;
2525
2526 qc->complete_fn = atapi_sense_complete;
2527
2528 ata_qc_issue(qc);
2529
2530 DPRINTK("EXIT\n");
2531}
2532
2533static void atapi_qc_complete(struct ata_queued_cmd *qc)
2534{
2535 struct scsi_cmnd *cmd = qc->scsicmd;
2536 unsigned int err_mask = qc->err_mask;
2537
2538 VPRINTK("ENTER, err_mask 0x%X\n", err_mask);
2539
2540
2541 if (unlikely(qc->ap->ops->error_handler &&
2542 (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) {
2543
2544 if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) {
2545
2546
2547
2548
2549
2550 ata_gen_passthru_sense(qc);
2551 }
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566 if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev)
2567 qc->dev->sdev->locked = 0;
2568
2569 qc->scsicmd->result = SAM_STAT_CHECK_CONDITION;
2570 qc->scsidone(cmd);
2571 ata_qc_free(qc);
2572 return;
2573 }
2574
2575
2576 if (unlikely(err_mask & AC_ERR_DEV)) {
2577 cmd->result = SAM_STAT_CHECK_CONDITION;
2578 atapi_request_sense(qc);
2579 return;
2580 } else if (unlikely(err_mask)) {
2581
2582
2583
2584
2585
2586 ata_gen_passthru_sense(qc);
2587 } else {
2588 u8 *scsicmd = cmd->cmnd;
2589
2590 if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) {
2591 unsigned long flags;
2592 u8 *buf;
2593
2594 buf = ata_scsi_rbuf_get(cmd, true, &flags);
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604 if (buf[2] == 0) {
2605 buf[2] = 0x5;
2606 buf[3] = 0x32;
2607 }
2608
2609 ata_scsi_rbuf_put(cmd, true, &flags);
2610 }
2611
2612 cmd->result = SAM_STAT_GOOD;
2613 }
2614
2615 qc->scsidone(cmd);
2616 ata_qc_free(qc);
2617}
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
2629{
2630 struct scsi_cmnd *scmd = qc->scsicmd;
2631 struct ata_device *dev = qc->dev;
2632 int nodata = (scmd->sc_data_direction == DMA_NONE);
2633 int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO);
2634 unsigned int nbytes;
2635
2636 memset(qc->cdb, 0, dev->cdb_len);
2637 memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len);
2638
2639 qc->complete_fn = atapi_qc_complete;
2640
2641 qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
2642 if (scmd->sc_data_direction == DMA_TO_DEVICE) {
2643 qc->tf.flags |= ATA_TFLAG_WRITE;
2644 DPRINTK("direction: write\n");
2645 }
2646
2647 qc->tf.command = ATA_CMD_PACKET;
2648 ata_qc_set_pc_nbytes(qc);
2649
2650
2651 if (!nodata && !using_pio && atapi_check_dma(qc))
2652 using_pio = 1;
2653
2654
2655
2656
2657
2658
2659 nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024);
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685 if (nbytes & 0x1)
2686 nbytes++;
2687
2688 qc->tf.lbam = (nbytes & 0xFF);
2689 qc->tf.lbah = (nbytes >> 8);
2690
2691 if (nodata)
2692 qc->tf.protocol = ATAPI_PROT_NODATA;
2693 else if (using_pio)
2694 qc->tf.protocol = ATAPI_PROT_PIO;
2695 else {
2696
2697 qc->tf.protocol = ATAPI_PROT_DMA;
2698 qc->tf.feature |= ATAPI_PKT_DMA;
2699
2700 if ((dev->flags & ATA_DFLAG_DMADIR) &&
2701 (scmd->sc_data_direction != DMA_TO_DEVICE))
2702
2703 qc->tf.feature |= ATAPI_DMADIR;
2704 }
2705
2706
2707
2708
2709 return 0;
2710}
2711
2712static struct ata_device *ata_find_dev(struct ata_port *ap, int devno)
2713{
2714 if (!sata_pmp_attached(ap)) {
2715 if (likely(devno < ata_link_max_devices(&ap->link)))
2716 return &ap->link.device[devno];
2717 } else {
2718 if (likely(devno < ap->nr_pmp_links))
2719 return &ap->pmp_link[devno].device[0];
2720 }
2721
2722 return NULL;
2723}
2724
2725static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap,
2726 const struct scsi_device *scsidev)
2727{
2728 int devno;
2729
2730
2731 if (!sata_pmp_attached(ap)) {
2732 if (unlikely(scsidev->channel || scsidev->lun))
2733 return NULL;
2734 devno = scsidev->id;
2735 } else {
2736 if (unlikely(scsidev->id || scsidev->lun))
2737 return NULL;
2738 devno = scsidev->channel;
2739 }
2740
2741 return ata_find_dev(ap, devno);
2742}
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760static struct ata_device *
2761ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev)
2762{
2763 struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev);
2764
2765 if (unlikely(!dev || !ata_dev_enabled(dev)))
2766 return NULL;
2767
2768 return dev;
2769}
2770
2771
2772
2773
2774
2775
2776
2777
2778static u8
2779ata_scsi_map_proto(u8 byte1)
2780{
2781 switch((byte1 & 0x1e) >> 1) {
2782 case 3:
2783 return ATA_PROT_NODATA;
2784
2785 case 6:
2786 case 10:
2787 case 11:
2788 return ATA_PROT_DMA;
2789
2790 case 4:
2791 case 5:
2792 return ATA_PROT_PIO;
2793
2794 case 0:
2795 case 1:
2796 case 8:
2797 case 9:
2798 case 7:
2799 case 12:
2800 case 15:
2801 default:
2802 break;
2803 }
2804
2805 return ATA_PROT_UNKNOWN;
2806}
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
2818{
2819 struct ata_taskfile *tf = &(qc->tf);
2820 struct scsi_cmnd *scmd = qc->scsicmd;
2821 struct ata_device *dev = qc->dev;
2822 const u8 *cdb = scmd->cmnd;
2823
2824 if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN)
2825 goto invalid_fld;
2826
2827
2828
2829
2830
2831 if (cdb[0] == ATA_16) {
2832
2833
2834
2835
2836
2837 if (cdb[1] & 0x01) {
2838 tf->hob_feature = cdb[3];
2839 tf->hob_nsect = cdb[5];
2840 tf->hob_lbal = cdb[7];
2841 tf->hob_lbam = cdb[9];
2842 tf->hob_lbah = cdb[11];
2843 tf->flags |= ATA_TFLAG_LBA48;
2844 } else
2845 tf->flags &= ~ATA_TFLAG_LBA48;
2846
2847
2848
2849
2850 tf->feature = cdb[4];
2851 tf->nsect = cdb[6];
2852 tf->lbal = cdb[8];
2853 tf->lbam = cdb[10];
2854 tf->lbah = cdb[12];
2855 tf->device = cdb[13];
2856 tf->command = cdb[14];
2857 } else {
2858
2859
2860
2861 tf->flags &= ~ATA_TFLAG_LBA48;
2862
2863 tf->feature = cdb[3];
2864 tf->nsect = cdb[4];
2865 tf->lbal = cdb[5];
2866 tf->lbam = cdb[6];
2867 tf->lbah = cdb[7];
2868 tf->device = cdb[8];
2869 tf->command = cdb[9];
2870 }
2871
2872
2873 tf->device = dev->devno ?
2874 tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1;
2875
2876 switch (tf->command) {
2877
2878 case ATA_CMD_READ_LONG:
2879 case ATA_CMD_READ_LONG_ONCE:
2880 case ATA_CMD_WRITE_LONG:
2881 case ATA_CMD_WRITE_LONG_ONCE:
2882 if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1)
2883 goto invalid_fld;
2884 qc->sect_size = scsi_bufflen(scmd);
2885 break;
2886
2887
2888 case ATA_CMD_CFA_WRITE_NE:
2889 case ATA_CMD_CFA_TRANS_SECT:
2890 case ATA_CMD_CFA_WRITE_MULT_NE:
2891
2892 case ATA_CMD_READ:
2893 case ATA_CMD_READ_EXT:
2894 case ATA_CMD_READ_QUEUED:
2895
2896 case ATA_CMD_FPDMA_READ:
2897 case ATA_CMD_READ_MULTI:
2898 case ATA_CMD_READ_MULTI_EXT:
2899 case ATA_CMD_PIO_READ:
2900 case ATA_CMD_PIO_READ_EXT:
2901 case ATA_CMD_READ_STREAM_DMA_EXT:
2902 case ATA_CMD_READ_STREAM_EXT:
2903 case ATA_CMD_VERIFY:
2904 case ATA_CMD_VERIFY_EXT:
2905 case ATA_CMD_WRITE:
2906 case ATA_CMD_WRITE_EXT:
2907 case ATA_CMD_WRITE_FUA_EXT:
2908 case ATA_CMD_WRITE_QUEUED:
2909 case ATA_CMD_WRITE_QUEUED_FUA_EXT:
2910 case ATA_CMD_FPDMA_WRITE:
2911 case ATA_CMD_WRITE_MULTI:
2912 case ATA_CMD_WRITE_MULTI_EXT:
2913 case ATA_CMD_WRITE_MULTI_FUA_EXT:
2914 case ATA_CMD_PIO_WRITE:
2915 case ATA_CMD_PIO_WRITE_EXT:
2916 case ATA_CMD_WRITE_STREAM_DMA_EXT:
2917 case ATA_CMD_WRITE_STREAM_EXT:
2918 qc->sect_size = scmd->device->sector_size;
2919 break;
2920
2921
2922 default:
2923 qc->sect_size = ATA_SECT_SIZE;
2924 }
2925
2926
2927
2928
2929
2930
2931 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
2932 if (scmd->sc_data_direction == DMA_TO_DEVICE)
2933 tf->flags |= ATA_TFLAG_WRITE;
2934
2935 qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET;
2936
2937
2938
2939
2940
2941
2942
2943 ata_qc_set_pc_nbytes(qc);
2944
2945
2946 if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0)
2947 goto invalid_fld;
2948
2949
2950 if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf))
2951 goto invalid_fld;
2952
2953 if (is_multi_taskfile(tf)) {
2954 unsigned int multi_count = 1 << (cdb[1] >> 5);
2955
2956
2957
2958
2959 if (multi_count != dev->multi_count)
2960 ata_dev_printk(dev, KERN_WARNING,
2961 "invalid multi_count %u ignored\n",
2962 multi_count);
2963 }
2964
2965
2966
2967
2968
2969
2970
2971
2972 if (tf->command == ATA_CMD_SET_FEATURES &&
2973 tf->feature == SETFEATURES_XFER)
2974 goto invalid_fld;
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991 if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm)
2992 goto invalid_fld;
2993
2994 return 0;
2995
2996 invalid_fld:
2997 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00);
2998
2999 return 1;
3000}
3001
3002static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc)
3003{
3004 struct ata_taskfile *tf = &qc->tf;
3005 struct scsi_cmnd *scmd = qc->scsicmd;
3006 struct ata_device *dev = qc->dev;
3007 const u8 *cdb = scmd->cmnd;
3008 u64 block;
3009 u32 n_block;
3010 u32 size;
3011 void *buf;
3012
3013
3014 if (unlikely(!dev->dma_mode))
3015 goto invalid_fld;
3016
3017 if (unlikely(scmd->cmd_len < 16))
3018 goto invalid_fld;
3019 scsi_16_lba_len(cdb, &block, &n_block);
3020
3021
3022 if (unlikely(!(cdb[1] & 0x8)))
3023 goto invalid_fld;
3024
3025
3026
3027
3028
3029 if (!scsi_sg_count(scmd))
3030 goto invalid_fld;
3031
3032 buf = page_address(sg_page(scsi_sglist(scmd)));
3033 size = ata_set_lba_range_entries(buf, 512, block, n_block);
3034
3035 tf->protocol = ATA_PROT_DMA;
3036 tf->hob_feature = 0;
3037 tf->feature = ATA_DSM_TRIM;
3038 tf->hob_nsect = (size / 512) >> 8;
3039 tf->nsect = size / 512;
3040 tf->command = ATA_CMD_DSM;
3041 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 |
3042 ATA_TFLAG_WRITE;
3043
3044 ata_qc_set_pc_nbytes(qc);
3045
3046 return 0;
3047
3048 invalid_fld:
3049 ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00);
3050
3051 return 1;
3052}
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
3067{
3068 switch (cmd) {
3069 case READ_6:
3070 case READ_10:
3071 case READ_16:
3072
3073 case WRITE_6:
3074 case WRITE_10:
3075 case WRITE_16:
3076 return ata_scsi_rw_xlat;
3077
3078 case WRITE_SAME_16:
3079 return ata_scsi_write_same_xlat;
3080
3081 case SYNCHRONIZE_CACHE:
3082 if (ata_try_flush_cache(dev))
3083 return ata_scsi_flush_xlat;
3084 break;
3085
3086 case VERIFY:
3087 case VERIFY_16:
3088 return ata_scsi_verify_xlat;
3089
3090 case ATA_12:
3091 case ATA_16:
3092 return ata_scsi_pass_thru;
3093
3094 case START_STOP:
3095 return ata_scsi_start_stop_xlat;
3096 }
3097
3098 return NULL;
3099}
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109static inline void ata_scsi_dump_cdb(struct ata_port *ap,
3110 struct scsi_cmnd *cmd)
3111{
3112#ifdef ATA_DEBUG
3113 struct scsi_device *scsidev = cmd->device;
3114 u8 *scsicmd = cmd->cmnd;
3115
3116 DPRINTK("CDB (%u:%d,%d,%d) %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
3117 ap->print_id,
3118 scsidev->channel, scsidev->id, scsidev->lun,
3119 scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3],
3120 scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7],
3121 scsicmd[8]);
3122#endif
3123}
3124
3125static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd,
3126 struct ata_device *dev)
3127{
3128 u8 scsi_op = scmd->cmnd[0];
3129 ata_xlat_func_t xlat_func;
3130 int rc = 0;
3131
3132 if (dev->class == ATA_DEV_ATA) {
3133 if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len))
3134 goto bad_cdb_len;
3135
3136 xlat_func = ata_get_xlat_func(dev, scsi_op);
3137 } else {
3138 if (unlikely(!scmd->cmd_len))
3139 goto bad_cdb_len;
3140
3141 xlat_func = NULL;
3142 if (likely((scsi_op != ATA_16) || !atapi_passthru16)) {
3143
3144 int len = COMMAND_SIZE(scsi_op);
3145 if (unlikely(len > scmd->cmd_len || len > dev->cdb_len))
3146 goto bad_cdb_len;
3147
3148 xlat_func = atapi_xlat;
3149 } else {
3150
3151 if (unlikely(scmd->cmd_len > 16))
3152 goto bad_cdb_len;
3153
3154 xlat_func = ata_get_xlat_func(dev, scsi_op);
3155 }
3156 }
3157
3158 if (xlat_func)
3159 rc = ata_scsi_translate(dev, scmd, xlat_func);
3160 else
3161 ata_scsi_simulate(dev, scmd);
3162
3163 return rc;
3164
3165 bad_cdb_len:
3166 DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n",
3167 scmd->cmd_len, scsi_op, dev->cdb_len);
3168 scmd->result = DID_ERROR << 16;
3169 scmd->scsi_done(scmd);
3170 return 0;
3171}
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd)
3193{
3194 struct ata_port *ap;
3195 struct ata_device *dev;
3196 struct scsi_device *scsidev = cmd->device;
3197 int rc = 0;
3198 unsigned long irq_flags;
3199
3200 ap = ata_shost_to_port(shost);
3201
3202 spin_lock_irqsave(ap->lock, irq_flags);
3203
3204 ata_scsi_dump_cdb(ap, cmd);
3205
3206 dev = ata_scsi_find_dev(ap, scsidev);
3207 if (likely(dev))
3208 rc = __ata_scsi_queuecmd(cmd, dev);
3209 else {
3210 cmd->result = (DID_BAD_TARGET << 16);
3211 cmd->scsi_done(cmd);
3212 }
3213
3214 spin_unlock_irqrestore(ap->lock, irq_flags);
3215
3216 return rc;
3217}
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd)
3232{
3233 struct ata_scsi_args args;
3234 const u8 *scsicmd = cmd->cmnd;
3235 u8 tmp8;
3236
3237 args.dev = dev;
3238 args.id = dev->id;
3239 args.cmd = cmd;
3240 args.done = cmd->scsi_done;
3241
3242 switch(scsicmd[0]) {
3243
3244 case FORMAT_UNIT:
3245 ata_scsi_invalid_field(cmd);
3246 break;
3247
3248 case INQUIRY:
3249 if (scsicmd[1] & 2)
3250 ata_scsi_invalid_field(cmd);
3251 else if ((scsicmd[1] & 1) == 0)
3252 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std);
3253 else switch (scsicmd[2]) {
3254 case 0x00:
3255 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00);
3256 break;
3257 case 0x80:
3258 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80);
3259 break;
3260 case 0x83:
3261 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83);
3262 break;
3263 case 0x89:
3264 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89);
3265 break;
3266 case 0xb0:
3267 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0);
3268 break;
3269 case 0xb1:
3270 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1);
3271 break;
3272 case 0xb2:
3273 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2);
3274 break;
3275 default:
3276 ata_scsi_invalid_field(cmd);
3277 break;
3278 }
3279 break;
3280
3281 case MODE_SENSE:
3282 case MODE_SENSE_10:
3283 ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense);
3284 break;
3285
3286 case MODE_SELECT:
3287 case MODE_SELECT_10:
3288 ata_scsi_invalid_field(cmd);
3289 break;
3290
3291 case READ_CAPACITY:
3292 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
3293 break;
3294
3295 case SERVICE_ACTION_IN:
3296 if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16)
3297 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
3298 else
3299 ata_scsi_invalid_field(cmd);
3300 break;
3301
3302 case REPORT_LUNS:
3303 ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns);
3304 break;
3305
3306 case REQUEST_SENSE:
3307 ata_scsi_set_sense(cmd, 0, 0, 0);
3308 cmd->result = (DRIVER_SENSE << 24);
3309 cmd->scsi_done(cmd);
3310 break;
3311
3312
3313
3314
3315 case SYNCHRONIZE_CACHE:
3316
3317
3318
3319 case REZERO_UNIT:
3320 case SEEK_6:
3321 case SEEK_10:
3322 case TEST_UNIT_READY:
3323 ata_scsi_rbuf_fill(&args, ata_scsiop_noop);
3324 break;
3325
3326 case SEND_DIAGNOSTIC:
3327 tmp8 = scsicmd[1] & ~(1 << 3);
3328 if ((tmp8 == 0x4) && (!scsicmd[3]) && (!scsicmd[4]))
3329 ata_scsi_rbuf_fill(&args, ata_scsiop_noop);
3330 else
3331 ata_scsi_invalid_field(cmd);
3332 break;
3333
3334
3335 default:
3336 ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0);
3337
3338 cmd->scsi_done(cmd);
3339 break;
3340 }
3341}
3342
3343int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht)
3344{
3345 int i, rc;
3346
3347 for (i = 0; i < host->n_ports; i++) {
3348 struct ata_port *ap = host->ports[i];
3349 struct Scsi_Host *shost;
3350
3351 rc = -ENOMEM;
3352 shost = scsi_host_alloc(sht, sizeof(struct ata_port *));
3353 if (!shost)
3354 goto err_alloc;
3355
3356 *(struct ata_port **)&shost->hostdata[0] = ap;
3357 ap->scsi_host = shost;
3358
3359 shost->transportt = ata_scsi_transport_template;
3360 shost->unique_id = ap->print_id;
3361 shost->max_id = 16;
3362 shost->max_lun = 1;
3363 shost->max_channel = 1;
3364 shost->max_cmd_len = 16;
3365
3366
3367
3368
3369
3370
3371 shost->max_host_blocked = 1;
3372
3373 rc = scsi_add_host(ap->scsi_host, ap->host->dev);
3374 if (rc)
3375 goto err_add;
3376 }
3377
3378 return 0;
3379
3380 err_add:
3381 scsi_host_put(host->ports[i]->scsi_host);
3382 err_alloc:
3383 while (--i >= 0) {
3384 struct Scsi_Host *shost = host->ports[i]->scsi_host;
3385
3386 scsi_remove_host(shost);
3387 scsi_host_put(shost);
3388 }
3389 return rc;
3390}
3391
3392void ata_scsi_scan_host(struct ata_port *ap, int sync)
3393{
3394 int tries = 5;
3395 struct ata_device *last_failed_dev = NULL;
3396 struct ata_link *link;
3397 struct ata_device *dev;
3398
3399 repeat:
3400 ata_for_each_link(link, ap, EDGE) {
3401 ata_for_each_dev(dev, link, ENABLED) {
3402 struct scsi_device *sdev;
3403 int channel = 0, id = 0;
3404
3405 if (dev->sdev)
3406 continue;
3407
3408 if (ata_is_host_link(link))
3409 id = dev->devno;
3410 else
3411 channel = link->pmp;
3412
3413 sdev = __scsi_add_device(ap->scsi_host, channel, id, 0,
3414 NULL);
3415 if (!IS_ERR(sdev)) {
3416 dev->sdev = sdev;
3417 scsi_device_put(sdev);
3418 } else {
3419 dev->sdev = NULL;
3420 }
3421 }
3422 }
3423
3424
3425
3426
3427
3428 ata_for_each_link(link, ap, EDGE) {
3429 ata_for_each_dev(dev, link, ENABLED) {
3430 if (!dev->sdev)
3431 goto exit_loop;
3432 }
3433 }
3434 exit_loop:
3435 if (!link)
3436 return;
3437
3438
3439 if (sync) {
3440
3441
3442
3443 if (dev != last_failed_dev) {
3444 msleep(100);
3445 last_failed_dev = dev;
3446 goto repeat;
3447 }
3448
3449
3450
3451
3452 if (--tries) {
3453 msleep(100);
3454 goto repeat;
3455 }
3456
3457 ata_port_printk(ap, KERN_ERR, "WARNING: synchronous SCSI scan "
3458 "failed without making any progress,\n"
3459 " switching to async\n");
3460 }
3461
3462 queue_delayed_work(system_long_wq, &ap->hotplug_task,
3463 round_jiffies_relative(HZ));
3464}
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481int ata_scsi_offline_dev(struct ata_device *dev)
3482{
3483 if (dev->sdev) {
3484 scsi_device_set_state(dev->sdev, SDEV_OFFLINE);
3485 return 1;
3486 }
3487 return 0;
3488}
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500static void ata_scsi_remove_dev(struct ata_device *dev)
3501{
3502 struct ata_port *ap = dev->link->ap;
3503 struct scsi_device *sdev;
3504 unsigned long flags;
3505
3506
3507
3508
3509
3510
3511
3512 mutex_lock(&ap->scsi_host->scan_mutex);
3513 spin_lock_irqsave(ap->lock, flags);
3514
3515
3516 sdev = dev->sdev;
3517 dev->sdev = NULL;
3518
3519 if (sdev) {
3520
3521
3522
3523
3524 if (scsi_device_get(sdev) == 0) {
3525
3526
3527
3528
3529
3530 scsi_device_set_state(sdev, SDEV_OFFLINE);
3531 } else {
3532 WARN_ON(1);
3533 sdev = NULL;
3534 }
3535 }
3536
3537 spin_unlock_irqrestore(ap->lock, flags);
3538 mutex_unlock(&ap->scsi_host->scan_mutex);
3539
3540 if (sdev) {
3541 ata_dev_printk(dev, KERN_INFO, "detaching (SCSI %s)\n",
3542 dev_name(&sdev->sdev_gendev));
3543
3544 scsi_remove_device(sdev);
3545 scsi_device_put(sdev);
3546 }
3547}
3548
3549static void ata_scsi_handle_link_detach(struct ata_link *link)
3550{
3551 struct ata_port *ap = link->ap;
3552 struct ata_device *dev;
3553
3554 ata_for_each_dev(dev, link, ALL) {
3555 unsigned long flags;
3556
3557 if (!(dev->flags & ATA_DFLAG_DETACHED))
3558 continue;
3559
3560 spin_lock_irqsave(ap->lock, flags);
3561 dev->flags &= ~ATA_DFLAG_DETACHED;
3562 spin_unlock_irqrestore(ap->lock, flags);
3563
3564 ata_scsi_remove_dev(dev);
3565 }
3566}
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578void ata_scsi_media_change_notify(struct ata_device *dev)
3579{
3580 if (dev->sdev)
3581 sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE,
3582 GFP_ATOMIC);
3583}
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597void ata_scsi_hotplug(struct work_struct *work)
3598{
3599 struct ata_port *ap =
3600 container_of(work, struct ata_port, hotplug_task.work);
3601 int i;
3602
3603 if (ap->pflags & ATA_PFLAG_UNLOADING) {
3604 DPRINTK("ENTER/EXIT - unloading\n");
3605 return;
3606 }
3607
3608 DPRINTK("ENTER\n");
3609 mutex_lock(&ap->scsi_scan_mutex);
3610
3611
3612
3613
3614
3615 ata_scsi_handle_link_detach(&ap->link);
3616 if (ap->pmp_link)
3617 for (i = 0; i < SATA_PMP_MAX_PORTS; i++)
3618 ata_scsi_handle_link_detach(&ap->pmp_link[i]);
3619
3620
3621 ata_scsi_scan_host(ap, 0);
3622
3623 mutex_unlock(&ap->scsi_scan_mutex);
3624 DPRINTK("EXIT\n");
3625}
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
3644 unsigned int id, unsigned int lun)
3645{
3646 struct ata_port *ap = ata_shost_to_port(shost);
3647 unsigned long flags;
3648 int devno, rc = 0;
3649
3650 if (!ap->ops->error_handler)
3651 return -EOPNOTSUPP;
3652
3653 if (lun != SCAN_WILD_CARD && lun)
3654 return -EINVAL;
3655
3656 if (!sata_pmp_attached(ap)) {
3657 if (channel != SCAN_WILD_CARD && channel)
3658 return -EINVAL;
3659 devno = id;
3660 } else {
3661 if (id != SCAN_WILD_CARD && id)
3662 return -EINVAL;
3663 devno = channel;
3664 }
3665
3666 spin_lock_irqsave(ap->lock, flags);
3667
3668 if (devno == SCAN_WILD_CARD) {
3669 struct ata_link *link;
3670
3671 ata_for_each_link(link, ap, EDGE) {
3672 struct ata_eh_info *ehi = &link->eh_info;
3673 ehi->probe_mask |= ATA_ALL_DEVICES;
3674 ehi->action |= ATA_EH_RESET;
3675 }
3676 } else {
3677 struct ata_device *dev = ata_find_dev(ap, devno);
3678
3679 if (dev) {
3680 struct ata_eh_info *ehi = &dev->link->eh_info;
3681 ehi->probe_mask |= 1 << dev->devno;
3682 ehi->action |= ATA_EH_RESET;
3683 } else
3684 rc = -EINVAL;
3685 }
3686
3687 if (rc == 0) {
3688 ata_port_schedule_eh(ap);
3689 spin_unlock_irqrestore(ap->lock, flags);
3690 ata_port_wait_eh(ap);
3691 } else
3692 spin_unlock_irqrestore(ap->lock, flags);
3693
3694 return rc;
3695}
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707void ata_scsi_dev_rescan(struct work_struct *work)
3708{
3709 struct ata_port *ap =
3710 container_of(work, struct ata_port, scsi_rescan_task);
3711 struct ata_link *link;
3712 struct ata_device *dev;
3713 unsigned long flags;
3714
3715 mutex_lock(&ap->scsi_scan_mutex);
3716 spin_lock_irqsave(ap->lock, flags);
3717
3718 ata_for_each_link(link, ap, EDGE) {
3719 ata_for_each_dev(dev, link, ENABLED) {
3720 struct scsi_device *sdev = dev->sdev;
3721
3722 if (!sdev)
3723 continue;
3724 if (scsi_device_get(sdev))
3725 continue;
3726
3727 spin_unlock_irqrestore(ap->lock, flags);
3728 scsi_rescan_device(&(sdev->sdev_gendev));
3729 scsi_device_put(sdev);
3730 spin_lock_irqsave(ap->lock, flags);
3731 }
3732 }
3733
3734 spin_unlock_irqrestore(ap->lock, flags);
3735 mutex_unlock(&ap->scsi_scan_mutex);
3736}
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751struct ata_port *ata_sas_port_alloc(struct ata_host *host,
3752 struct ata_port_info *port_info,
3753 struct Scsi_Host *shost)
3754{
3755 struct ata_port *ap;
3756
3757 ap = ata_port_alloc(host);
3758 if (!ap)
3759 return NULL;
3760
3761 ap->port_no = 0;
3762 ap->lock = shost->host_lock;
3763 ap->pio_mask = port_info->pio_mask;
3764 ap->mwdma_mask = port_info->mwdma_mask;
3765 ap->udma_mask = port_info->udma_mask;
3766 ap->flags |= port_info->flags;
3767 ap->ops = port_info->port_ops;
3768 ap->cbl = ATA_CBL_SATA;
3769
3770 return ap;
3771}
3772EXPORT_SYMBOL_GPL(ata_sas_port_alloc);
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786int ata_sas_port_start(struct ata_port *ap)
3787{
3788 return 0;
3789}
3790EXPORT_SYMBOL_GPL(ata_sas_port_start);
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802void ata_sas_port_stop(struct ata_port *ap)
3803{
3804}
3805EXPORT_SYMBOL_GPL(ata_sas_port_stop);
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818int ata_sas_port_init(struct ata_port *ap)
3819{
3820 int rc = ap->ops->port_start(ap);
3821
3822 if (!rc) {
3823 ap->print_id = ata_print_id++;
3824 rc = ata_bus_probe(ap);
3825 }
3826
3827 return rc;
3828}
3829EXPORT_SYMBOL_GPL(ata_sas_port_init);
3830
3831
3832
3833
3834
3835
3836
3837void ata_sas_port_destroy(struct ata_port *ap)
3838{
3839 if (ap->ops->port_stop)
3840 ap->ops->port_stop(ap);
3841 kfree(ap);
3842}
3843EXPORT_SYMBOL_GPL(ata_sas_port_destroy);
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap)
3855{
3856 ata_scsi_sdev_config(sdev);
3857 ata_scsi_dev_config(sdev, ap->link.device);
3858 return 0;
3859}
3860EXPORT_SYMBOL_GPL(ata_sas_slave_configure);
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap)
3873{
3874 int rc = 0;
3875
3876 ata_scsi_dump_cdb(ap, cmd);
3877
3878 if (likely(ata_dev_enabled(ap->link.device)))
3879 rc = __ata_scsi_queuecmd(cmd, ap->link.device);
3880 else {
3881 cmd->result = (DID_BAD_TARGET << 16);
3882 cmd->scsi_done(cmd);
3883 }
3884 return rc;
3885}
3886EXPORT_SYMBOL_GPL(ata_sas_queuecmd);
3887