2 * libata-scsi.c - helper library for ATA
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
8 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
9 * Copyright 2003-2004 Jeff Garzik
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2, or (at your option)
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; see the file COPYING. If not, write to
24 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
27 * libata documentation is available via 'make {ps|pdf}docs',
28 * as Documentation/DocBook/libata.*
30 * Hardware documentation available from
31 * - http://www.t10.org/
32 * - http://www.t13.org/
36 #include <linux/kernel.h>
37 #include <linux/blkdev.h>
38 #include <linux/spinlock.h>
39 #include <scsi/scsi.h>
40 #include <scsi/scsi_host.h>
41 #include <scsi/scsi_eh.h>
42 #include <scsi/scsi_device.h>
43 #include <scsi/scsi_request.h>
44 #include <scsi/scsi_transport.h>
45 #include <linux/libata.h>
46 #include <linux/hdreg.h>
47 #include <asm/uaccess.h>
51 #define SECTOR_SIZE 512
53 typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, const u8 *scsicmd);
54 static struct ata_device *
55 ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev);
57 #define RW_RECOVERY_MPAGE 0x1
58 #define RW_RECOVERY_MPAGE_LEN 12
59 #define CACHE_MPAGE 0x8
60 #define CACHE_MPAGE_LEN 20
61 #define CONTROL_MPAGE 0xa
62 #define CONTROL_MPAGE_LEN 12
63 #define ALL_MPAGES 0x3f
64 #define ALL_SUB_MPAGES 0xff
67 static const u8 def_rw_recovery_mpage[] = {
69 RW_RECOVERY_MPAGE_LEN - 2,
70 (1 << 7) | /* AWRE, sat-r06 say it shall be 0 */
71 (1 << 6), /* ARRE (auto read reallocation) */
72 0, /* read retry count */
74 0, /* write retry count */
78 static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = {
81 0, /* contains WCE, needs to be 0 for logic */
82 0, 0, 0, 0, 0, 0, 0, 0, 0,
83 0, /* contains DRA, needs to be 0 for logic */
87 static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = {
89 CONTROL_MPAGE_LEN - 2,
90 2, /* DSENSE=0, GLTSD=1 */
91 0, /* [QAM+QERR may be 1, see 05-359r1] */
92 0, 0, 0, 0, 0xff, 0xff,
93 0, 30 /* extended self test time, see 05-359r1 */
97 * libata transport template. libata doesn't do real transport stuff.
98 * It just needs the eh_timed_out hook.
100 struct scsi_transport_template ata_scsi_transport_template = {
101 .eh_timed_out = ata_scsi_timed_out,
105 static void ata_scsi_invalid_field(struct scsi_cmnd *cmd,
106 void (*done)(struct scsi_cmnd *))
108 ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0);
109 /* "Invalid field in cbd" */
114 * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd.
115 * @sdev: SCSI device for which BIOS geometry is to be determined
116 * @bdev: block device associated with @sdev
117 * @capacity: capacity of SCSI device
118 * @geom: location to which geometry will be output
120 * Generic bios head/sector/cylinder calculator
121 * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS)
122 * mapping. Some situations may arise where the disk is not
123 * bootable if this is not used.
126 * Defined by the SCSI layer. We don't really care.
131 int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev,
132 sector_t capacity, int geom[])
136 sector_div(capacity, 255*63);
143 * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl
144 * @scsidev: Device to which we are issuing command
145 * @arg: User provided data for issuing command
148 * Defined by the SCSI layer. We don't really care.
151 * Zero on success, negative errno on error.
154 int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
157 u8 scsi_cmd[MAX_COMMAND_SIZE];
158 u8 args[4], *argbuf = NULL;
160 struct scsi_sense_hdr sshdr;
161 enum dma_data_direction data_dir;
166 if (copy_from_user(args, arg, sizeof(args)))
169 memset(scsi_cmd, 0, sizeof(scsi_cmd));
172 argsize = SECTOR_SIZE * args[3];
173 argbuf = kmalloc(argsize, GFP_KERNEL);
174 if (argbuf == NULL) {
179 scsi_cmd[1] = (4 << 1); /* PIO Data-in */
180 scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev,
181 block count in sector count field */
182 data_dir = DMA_FROM_DEVICE;
184 scsi_cmd[1] = (3 << 1); /* Non-data */
185 /* scsi_cmd[2] is already 0 -- no off.line, cc, or data xfer */
189 scsi_cmd[0] = ATA_16;
191 scsi_cmd[4] = args[2];
192 if (args[0] == WIN_SMART) { /* hack -- ide driver does this too... */
193 scsi_cmd[6] = args[3];
194 scsi_cmd[8] = args[1];
198 scsi_cmd[6] = args[1];
200 scsi_cmd[14] = args[0];
202 /* Good values for timeout and retries? Values below
203 from scsi_ioctl_send_command() for default case... */
204 if (scsi_execute_req(scsidev, scsi_cmd, data_dir, argbuf, argsize,
205 &sshdr, (10*HZ), 5)) {
210 /* Need code to retrieve data from check condition? */
213 && copy_to_user(arg + sizeof(args), argbuf, argsize))
223 * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl
224 * @scsidev: Device to which we are issuing command
225 * @arg: User provided data for issuing command
228 * Defined by the SCSI layer. We don't really care.
231 * Zero on success, negative errno on error.
233 int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
236 u8 scsi_cmd[MAX_COMMAND_SIZE];
238 struct scsi_sense_hdr sshdr;
243 if (copy_from_user(args, arg, sizeof(args)))
246 memset(scsi_cmd, 0, sizeof(scsi_cmd));
247 scsi_cmd[0] = ATA_16;
248 scsi_cmd[1] = (3 << 1); /* Non-data */
249 /* scsi_cmd[2] is already 0 -- no off.line, cc, or data xfer */
250 scsi_cmd[4] = args[1];
251 scsi_cmd[6] = args[2];
252 scsi_cmd[8] = args[3];
253 scsi_cmd[10] = args[4];
254 scsi_cmd[12] = args[5];
255 scsi_cmd[14] = args[0];
257 /* Good values for timeout and retries? Values below
258 from scsi_ioctl_send_command() for default case... */
259 if (scsi_execute_req(scsidev, scsi_cmd, DMA_NONE, NULL, 0, &sshdr,
263 /* Need code to retrieve data from check condition? */
267 int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
269 int val = -EINVAL, rc = -EINVAL;
272 case ATA_IOC_GET_IO32:
274 if (copy_to_user(arg, &val, 1))
278 case ATA_IOC_SET_IO32:
279 val = (unsigned long) arg;
285 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
287 return ata_cmd_ioctl(scsidev, arg);
289 case HDIO_DRIVE_TASK:
290 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
292 return ata_task_ioctl(scsidev, arg);
303 * ata_scsi_qc_new - acquire new ata_queued_cmd reference
304 * @ap: ATA port to which the new command is attached
305 * @dev: ATA device to which the new command is attached
306 * @cmd: SCSI command that originated this ATA command
307 * @done: SCSI command completion function
309 * Obtain a reference to an unused ata_queued_cmd structure,
310 * which is the basic libata structure representing a single
311 * ATA command sent to the hardware.
313 * If a command was available, fill in the SCSI-specific
314 * portions of the structure with information on the
318 * spin_lock_irqsave(host_set lock)
321 * Command allocated, or %NULL if none available.
323 struct ata_queued_cmd *ata_scsi_qc_new(struct ata_port *ap,
324 struct ata_device *dev,
325 struct scsi_cmnd *cmd,
326 void (*done)(struct scsi_cmnd *))
328 struct ata_queued_cmd *qc;
330 qc = ata_qc_new_init(ap, dev);
336 qc->__sg = (struct scatterlist *) cmd->request_buffer;
337 qc->n_elem = cmd->use_sg;
339 qc->__sg = &qc->sgent;
343 cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1);
351 * ata_dump_status - user friendly display of error info
352 * @id: id of the port in question
353 * @tf: ptr to filled out taskfile
355 * Decode and dump the ATA error/status registers for the user so
356 * that they have some idea what really happened at the non
357 * make-believe layer.
360 * inherited from caller
362 void ata_dump_status(unsigned id, struct ata_taskfile *tf)
364 u8 stat = tf->command, err = tf->feature;
366 printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat);
367 if (stat & ATA_BUSY) {
368 printk("Busy }\n"); /* Data is not valid in this case */
370 if (stat & 0x40) printk("DriveReady ");
371 if (stat & 0x20) printk("DeviceFault ");
372 if (stat & 0x10) printk("SeekComplete ");
373 if (stat & 0x08) printk("DataRequest ");
374 if (stat & 0x04) printk("CorrectedError ");
375 if (stat & 0x02) printk("Index ");
376 if (stat & 0x01) printk("Error ");
380 printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err);
381 if (err & 0x04) printk("DriveStatusError ");
383 if (err & 0x04) printk("BadCRC ");
384 else printk("Sector ");
386 if (err & 0x40) printk("UncorrectableError ");
387 if (err & 0x10) printk("SectorIdNotFound ");
388 if (err & 0x02) printk("TrackZeroNotFound ");
389 if (err & 0x01) printk("AddrMarkNotFound ");
395 int ata_scsi_device_resume(struct scsi_device *sdev)
397 struct ata_port *ap = (struct ata_port *) &sdev->host->hostdata[0];
398 struct ata_device *dev = &ap->device[sdev->id];
400 return ata_device_resume(ap, dev);
403 int ata_scsi_device_suspend(struct scsi_device *sdev, pm_message_t state)
405 struct ata_port *ap = (struct ata_port *) &sdev->host->hostdata[0];
406 struct ata_device *dev = &ap->device[sdev->id];
408 return ata_device_suspend(ap, dev, state);
412 * ata_to_sense_error - convert ATA error to SCSI error
413 * @id: ATA device number
414 * @drv_stat: value contained in ATA status register
415 * @drv_err: value contained in ATA error register
416 * @sk: the sense key we'll fill out
417 * @asc: the additional sense code we'll fill out
418 * @ascq: the additional sense code qualifier we'll fill out
420 * Converts an ATA error into a SCSI error. Fill out pointers to
421 * SK, ASC, and ASCQ bytes for later use in fixed or descriptor
422 * format sense blocks.
425 * spin_lock_irqsave(host_set lock)
427 void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc,
432 /* Based on the 3ware driver translation table */
433 static const unsigned char sense_table[][4] = {
435 {0xd1, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command
437 {0xd0, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command
439 {0x61, HARDWARE_ERROR, 0x00, 0x00}, // Device fault Hardware error
440 /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */
441 {0x84, ABORTED_COMMAND, 0x47, 0x00}, // Data CRC error SCSI parity error
442 /* MC|ID|ABRT|TRK0|MARK */
443 {0x37, NOT_READY, 0x04, 0x00}, // Unit offline Not ready
445 {0x09, NOT_READY, 0x04, 0x00}, // Unrecovered disk error Not ready
446 /* Bad address mark */
447 {0x01, MEDIUM_ERROR, 0x13, 0x00}, // Address mark not found Address mark not found for data field
449 {0x02, HARDWARE_ERROR, 0x00, 0x00}, // Track 0 not found Hardware error
451 {0x04, ABORTED_COMMAND, 0x00, 0x00}, // Aborted command Aborted command
452 /* Media change request */
453 {0x08, NOT_READY, 0x04, 0x00}, // Media change request FIXME: faking offline
455 {0x10, ABORTED_COMMAND, 0x14, 0x00}, // ID not found Recorded entity not found
457 {0x08, NOT_READY, 0x04, 0x00}, // Media change FIXME: faking offline
459 {0x40, MEDIUM_ERROR, 0x11, 0x04}, // Uncorrectable ECC error Unrecovered read error
460 /* BBD - block marked bad */
461 {0x80, MEDIUM_ERROR, 0x11, 0x04}, // Block marked bad Medium error, unrecovered read error
462 {0xFF, 0xFF, 0xFF, 0xFF}, // END mark
464 static const unsigned char stat_table[][4] = {
465 /* Must be first because BUSY means no other bits valid */
466 {0x80, ABORTED_COMMAND, 0x47, 0x00}, // Busy, fake parity for now
467 {0x20, HARDWARE_ERROR, 0x00, 0x00}, // Device fault
468 {0x08, ABORTED_COMMAND, 0x47, 0x00}, // Timed out in xfer, fake parity for now
469 {0x04, RECOVERED_ERROR, 0x11, 0x00}, // Recovered ECC error Medium error, recovered
470 {0xFF, 0xFF, 0xFF, 0xFF}, // END mark
474 * Is this an error we can process/parse
476 if (drv_stat & ATA_BUSY) {
477 drv_err = 0; /* Ignore the err bits, they're invalid */
481 /* Look for drv_err */
482 for (i = 0; sense_table[i][0] != 0xFF; i++) {
483 /* Look for best matches first */
484 if ((sense_table[i][0] & drv_err) ==
486 *sk = sense_table[i][1];
487 *asc = sense_table[i][2];
488 *ascq = sense_table[i][3];
492 /* No immediate match */
493 printk(KERN_WARNING "ata%u: no sense translation for "
494 "error 0x%02x\n", id, drv_err);
497 /* Fall back to interpreting status bits */
498 for (i = 0; stat_table[i][0] != 0xFF; i++) {
499 if (stat_table[i][0] & drv_stat) {
500 *sk = stat_table[i][1];
501 *asc = stat_table[i][2];
502 *ascq = stat_table[i][3];
506 /* No error? Undecoded? */
507 printk(KERN_WARNING "ata%u: no sense translation for status: 0x%02x\n",
510 /* We need a sensible error return here, which is tricky, and one
511 that won't cause people to do things like return a disk wrongly */
512 *sk = ABORTED_COMMAND;
517 printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x to "
518 "SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", id, drv_stat, drv_err,
524 * ata_gen_ata_desc_sense - Generate check condition sense block.
525 * @qc: Command that completed.
527 * This function is specific to the ATA descriptor format sense
528 * block specified for the ATA pass through commands. Regardless
529 * of whether the command errored or not, return a sense
530 * block. Copy all controller registers into the sense
531 * block. Clear sense key, ASC & ASCQ if there is no error.
534 * spin_lock_irqsave(host_set lock)
536 void ata_gen_ata_desc_sense(struct ata_queued_cmd *qc)
538 struct scsi_cmnd *cmd = qc->scsicmd;
539 struct ata_taskfile *tf = &qc->tf;
540 unsigned char *sb = cmd->sense_buffer;
541 unsigned char *desc = sb + 8;
543 memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
545 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
548 * Use ata_to_sense_error() to map status register bits
549 * onto sense key, asc & ascq.
552 tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
553 ata_to_sense_error(qc->ap->id, tf->command, tf->feature,
554 &sb[1], &sb[2], &sb[3]);
559 * Sense data is current and format is descriptor.
566 * Set length of additional sense data.
567 * Since we only populate descriptor 0, the total
568 * length is the same (fixed) length as descriptor 0.
570 desc[1] = sb[7] = 14;
573 * Copy registers into sense buffer.
576 desc[3] = tf->feature; /* == error reg */
581 desc[12] = tf->device;
582 desc[13] = tf->command; /* == status reg */
585 * Fill in Extend bit, and the high order bytes
588 if (tf->flags & ATA_TFLAG_LBA48) {
590 desc[4] = tf->hob_nsect;
591 desc[6] = tf->hob_lbal;
592 desc[8] = tf->hob_lbam;
593 desc[10] = tf->hob_lbah;
598 * ata_gen_fixed_sense - generate a SCSI fixed sense block
599 * @qc: Command that we are erroring out
601 * Leverage ata_to_sense_error() to give us the codes. Fit our
602 * LBA in here if there's room.
605 * inherited from caller
607 void ata_gen_fixed_sense(struct ata_queued_cmd *qc)
609 struct scsi_cmnd *cmd = qc->scsicmd;
610 struct ata_taskfile *tf = &qc->tf;
611 unsigned char *sb = cmd->sense_buffer;
613 memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
615 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
618 * Use ata_to_sense_error() to map status register bits
619 * onto sense key, asc & ascq.
622 tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
623 ata_to_sense_error(qc->ap->id, tf->command, tf->feature,
624 &sb[2], &sb[12], &sb[13]);
631 if (tf->flags & ATA_TFLAG_LBA48) {
632 /* TODO: find solution for LBA48 descriptors */
635 else if (tf->flags & ATA_TFLAG_LBA) {
636 /* A small (28b) LBA will fit in the 32b info field */
637 sb[0] |= 0x80; /* set valid bit */
638 sb[3] = tf->device & 0x0f;
649 static void ata_scsi_sdev_config(struct scsi_device *sdev)
651 sdev->use_10_for_rw = 1;
652 sdev->use_10_for_ms = 1;
655 static void ata_scsi_dev_config(struct scsi_device *sdev,
656 struct ata_device *dev)
658 unsigned int max_sectors;
660 /* TODO: 2048 is an arbitrary number, not the
661 * hardware maximum. This should be increased to
662 * 65534 when Jens Axboe's patch for dynamically
663 * determining max_sectors is merged.
665 max_sectors = ATA_MAX_SECTORS;
666 if (dev->flags & ATA_DFLAG_LBA48)
668 if (dev->max_sectors)
669 max_sectors = dev->max_sectors;
671 blk_queue_max_sectors(sdev->request_queue, max_sectors);
674 * SATA DMA transfers must be multiples of 4 byte, so
675 * we need to pad ATAPI transfers using an extra sg.
676 * Decrement max hw segments accordingly.
678 if (dev->class == ATA_DEV_ATAPI) {
679 request_queue_t *q = sdev->request_queue;
680 blk_queue_max_hw_segments(q, q->max_hw_segments - 1);
685 * ata_scsi_slave_config - Set SCSI device attributes
686 * @sdev: SCSI device to examine
688 * This is called before we actually start reading
689 * and writing to the device, to configure certain
690 * SCSI mid-layer behaviors.
693 * Defined by SCSI layer. We don't really care.
696 int ata_scsi_slave_config(struct scsi_device *sdev)
698 ata_scsi_sdev_config(sdev);
700 blk_queue_max_phys_segments(sdev->request_queue, LIBATA_MAX_PRD);
702 if (sdev->id < ATA_MAX_DEVICES) {
704 struct ata_device *dev;
706 ap = (struct ata_port *) &sdev->host->hostdata[0];
707 dev = &ap->device[sdev->id];
709 ata_scsi_dev_config(sdev, dev);
712 return 0; /* scsi layer doesn't check return value, sigh */
716 * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command
717 * @qc: Storage for translated ATA taskfile
718 * @scsicmd: SCSI command to translate
720 * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY
721 * (to start). Perhaps these commands should be preceded by
722 * CHECK POWER MODE to see what power mode the device is already in.
723 * [See SAT revision 5 at www.t10.org]
726 * spin_lock_irqsave(host_set lock)
729 * Zero on success, non-zero on error.
732 static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc,
735 struct ata_taskfile *tf = &qc->tf;
737 tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
738 tf->protocol = ATA_PROT_NODATA;
739 if (scsicmd[1] & 0x1) {
740 ; /* ignore IMMED bit, violates sat-r05 */
742 if (scsicmd[4] & 0x2)
743 goto invalid_fld; /* LOEJ bit set not supported */
744 if (((scsicmd[4] >> 4) & 0xf) != 0)
745 goto invalid_fld; /* power conditions not supported */
746 if (scsicmd[4] & 0x1) {
747 tf->nsect = 1; /* 1 sector, lba=0 */
749 if (qc->dev->flags & ATA_DFLAG_LBA) {
750 qc->tf.flags |= ATA_TFLAG_LBA;
755 tf->device |= ATA_LBA;
758 tf->lbal = 0x1; /* sect */
759 tf->lbam = 0x0; /* cyl low */
760 tf->lbah = 0x0; /* cyl high */
763 tf->command = ATA_CMD_VERIFY; /* READ VERIFY */
765 tf->nsect = 0; /* time period value (0 implies now) */
766 tf->command = ATA_CMD_STANDBY;
767 /* Consider: ATA STANDBY IMMEDIATE command */
770 * Standby and Idle condition timers could be implemented but that
771 * would require libata to implement the Power condition mode page
772 * and allow the user to change it. Changing mode pages requires
773 * MODE SELECT to be implemented.
779 ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0);
780 /* "Invalid field in cbd" */
786 * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command
787 * @qc: Storage for translated ATA taskfile
788 * @scsicmd: SCSI command to translate (ignored)
790 * Sets up an ATA taskfile to issue FLUSH CACHE or
794 * spin_lock_irqsave(host_set lock)
797 * Zero on success, non-zero on error.
800 static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
802 struct ata_taskfile *tf = &qc->tf;
804 tf->flags |= ATA_TFLAG_DEVICE;
805 tf->protocol = ATA_PROT_NODATA;
807 if ((qc->dev->flags & ATA_DFLAG_LBA48) &&
808 (ata_id_has_flush_ext(qc->dev->id)))
809 tf->command = ATA_CMD_FLUSH_EXT;
811 tf->command = ATA_CMD_FLUSH;
817 * scsi_6_lba_len - Get LBA and transfer length
818 * @scsicmd: SCSI command to translate
820 * Calculate LBA and transfer length for 6-byte commands.
824 * @plen: the transfer length
827 static void scsi_6_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
832 VPRINTK("six-byte command\n");
834 lba |= ((u64)scsicmd[2]) << 8;
835 lba |= ((u64)scsicmd[3]);
837 len |= ((u32)scsicmd[4]);
844 * scsi_10_lba_len - Get LBA and transfer length
845 * @scsicmd: SCSI command to translate
847 * Calculate LBA and transfer length for 10-byte commands.
851 * @plen: the transfer length
854 static void scsi_10_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
859 VPRINTK("ten-byte command\n");
861 lba |= ((u64)scsicmd[2]) << 24;
862 lba |= ((u64)scsicmd[3]) << 16;
863 lba |= ((u64)scsicmd[4]) << 8;
864 lba |= ((u64)scsicmd[5]);
866 len |= ((u32)scsicmd[7]) << 8;
867 len |= ((u32)scsicmd[8]);
874 * scsi_16_lba_len - Get LBA and transfer length
875 * @scsicmd: SCSI command to translate
877 * Calculate LBA and transfer length for 16-byte commands.
881 * @plen: the transfer length
884 static void scsi_16_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
889 VPRINTK("sixteen-byte command\n");
891 lba |= ((u64)scsicmd[2]) << 56;
892 lba |= ((u64)scsicmd[3]) << 48;
893 lba |= ((u64)scsicmd[4]) << 40;
894 lba |= ((u64)scsicmd[5]) << 32;
895 lba |= ((u64)scsicmd[6]) << 24;
896 lba |= ((u64)scsicmd[7]) << 16;
897 lba |= ((u64)scsicmd[8]) << 8;
898 lba |= ((u64)scsicmd[9]);
900 len |= ((u32)scsicmd[10]) << 24;
901 len |= ((u32)scsicmd[11]) << 16;
902 len |= ((u32)scsicmd[12]) << 8;
903 len |= ((u32)scsicmd[13]);
910 * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one
911 * @qc: Storage for translated ATA taskfile
912 * @scsicmd: SCSI command to translate
914 * Converts SCSI VERIFY command to an ATA READ VERIFY command.
917 * spin_lock_irqsave(host_set lock)
920 * Zero on success, non-zero on error.
923 static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
925 struct ata_taskfile *tf = &qc->tf;
926 struct ata_device *dev = qc->dev;
927 u64 dev_sectors = qc->dev->n_sectors;
931 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
932 tf->protocol = ATA_PROT_NODATA;
934 if (scsicmd[0] == VERIFY)
935 scsi_10_lba_len(scsicmd, &block, &n_block);
936 else if (scsicmd[0] == VERIFY_16)
937 scsi_16_lba_len(scsicmd, &block, &n_block);
943 if (block >= dev_sectors)
945 if ((block + n_block) > dev_sectors)
948 if (dev->flags & ATA_DFLAG_LBA) {
949 tf->flags |= ATA_TFLAG_LBA;
951 if (lba_28_ok(block, n_block)) {
953 tf->command = ATA_CMD_VERIFY;
954 tf->device |= (block >> 24) & 0xf;
955 } else if (lba_48_ok(block, n_block)) {
956 if (!(dev->flags & ATA_DFLAG_LBA48))
960 tf->flags |= ATA_TFLAG_LBA48;
961 tf->command = ATA_CMD_VERIFY_EXT;
963 tf->hob_nsect = (n_block >> 8) & 0xff;
965 tf->hob_lbah = (block >> 40) & 0xff;
966 tf->hob_lbam = (block >> 32) & 0xff;
967 tf->hob_lbal = (block >> 24) & 0xff;
969 /* request too large even for LBA48 */
972 tf->nsect = n_block & 0xff;
974 tf->lbah = (block >> 16) & 0xff;
975 tf->lbam = (block >> 8) & 0xff;
976 tf->lbal = block & 0xff;
978 tf->device |= ATA_LBA;
981 u32 sect, head, cyl, track;
983 if (!lba_28_ok(block, n_block))
986 /* Convert LBA to CHS */
987 track = (u32)block / dev->sectors;
988 cyl = track / dev->heads;
989 head = track % dev->heads;
990 sect = (u32)block % dev->sectors + 1;
992 DPRINTK("block %u track %u cyl %u head %u sect %u\n",
993 (u32)block, track, cyl, head, sect);
995 /* Check whether the converted CHS can fit.
999 if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
1002 tf->command = ATA_CMD_VERIFY;
1003 tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */
1006 tf->lbah = cyl >> 8;
1013 ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0);
1014 /* "Invalid field in cbd" */
1018 ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x21, 0x0);
1019 /* "Logical Block Address out of range" */
1023 qc->scsicmd->result = SAM_STAT_GOOD;
1028 * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one
1029 * @qc: Storage for translated ATA taskfile
1030 * @scsicmd: SCSI command to translate
1032 * Converts any of six SCSI read/write commands into the
1033 * ATA counterpart, including starting sector (LBA),
1034 * sector count, and taking into account the device's LBA48
1037 * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and
1038 * %WRITE_16 are currently supported.
1041 * spin_lock_irqsave(host_set lock)
1044 * Zero on success, non-zero on error.
1047 static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
1049 struct ata_taskfile *tf = &qc->tf;
1050 struct ata_device *dev = qc->dev;
1054 qc->flags |= ATA_QCFLAG_IO;
1055 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
1057 if (scsicmd[0] == WRITE_10 || scsicmd[0] == WRITE_6 ||
1058 scsicmd[0] == WRITE_16)
1059 tf->flags |= ATA_TFLAG_WRITE;
1061 /* Calculate the SCSI LBA, transfer length and FUA. */
1062 switch (scsicmd[0]) {
1065 scsi_10_lba_len(scsicmd, &block, &n_block);
1066 if (unlikely(scsicmd[1] & (1 << 3)))
1067 tf->flags |= ATA_TFLAG_FUA;
1071 scsi_6_lba_len(scsicmd, &block, &n_block);
1073 /* for 6-byte r/w commands, transfer length 0
1074 * means 256 blocks of data, not 0 block.
1081 scsi_16_lba_len(scsicmd, &block, &n_block);
1082 if (unlikely(scsicmd[1] & (1 << 3)))
1083 tf->flags |= ATA_TFLAG_FUA;
1086 DPRINTK("no-byte command\n");
1090 /* Check and compose ATA command */
1092 /* For 10-byte and 16-byte SCSI R/W commands, transfer
1093 * length 0 means transfer 0 block of data.
1094 * However, for ATA R/W commands, sector count 0 means
1095 * 256 or 65536 sectors, not 0 sectors as in SCSI.
1097 * WARNING: one or two older ATA drives treat 0 as 0...
1101 if (dev->flags & ATA_DFLAG_LBA) {
1102 tf->flags |= ATA_TFLAG_LBA;
1104 if (lba_28_ok(block, n_block)) {
1106 tf->device |= (block >> 24) & 0xf;
1107 } else if (lba_48_ok(block, n_block)) {
1108 if (!(dev->flags & ATA_DFLAG_LBA48))
1112 tf->flags |= ATA_TFLAG_LBA48;
1114 tf->hob_nsect = (n_block >> 8) & 0xff;
1116 tf->hob_lbah = (block >> 40) & 0xff;
1117 tf->hob_lbam = (block >> 32) & 0xff;
1118 tf->hob_lbal = (block >> 24) & 0xff;
1120 /* request too large even for LBA48 */
1123 if (unlikely(ata_rwcmd_protocol(qc) < 0))
1126 qc->nsect = n_block;
1127 tf->nsect = n_block & 0xff;
1129 tf->lbah = (block >> 16) & 0xff;
1130 tf->lbam = (block >> 8) & 0xff;
1131 tf->lbal = block & 0xff;
1133 tf->device |= ATA_LBA;
1136 u32 sect, head, cyl, track;
1138 /* The request -may- be too large for CHS addressing. */
1139 if (!lba_28_ok(block, n_block))
1142 if (unlikely(ata_rwcmd_protocol(qc) < 0))
1145 /* Convert LBA to CHS */
1146 track = (u32)block / dev->sectors;
1147 cyl = track / dev->heads;
1148 head = track % dev->heads;
1149 sect = (u32)block % dev->sectors + 1;
1151 DPRINTK("block %u track %u cyl %u head %u sect %u\n",
1152 (u32)block, track, cyl, head, sect);
1154 /* Check whether the converted CHS can fit.
1158 if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
1161 qc->nsect = n_block;
1162 tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */
1165 tf->lbah = cyl >> 8;
1172 ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0);
1173 /* "Invalid field in cbd" */
1177 ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x21, 0x0);
1178 /* "Logical Block Address out of range" */
1182 qc->scsicmd->result = SAM_STAT_GOOD;
1186 static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
1188 struct scsi_cmnd *cmd = qc->scsicmd;
1189 u8 *cdb = cmd->cmnd;
1190 int need_sense = (qc->err_mask != 0);
1192 /* For ATA pass thru (SAT) commands, generate a sense block if
1193 * user mandated it or if there's an error. Note that if we
1194 * generate because the user forced us to, a check condition
1195 * is generated and the ATA register values are returned
1196 * whether the command completed successfully or not. If there
1197 * was no error, SK, ASC and ASCQ will all be zero.
1199 if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) &&
1200 ((cdb[2] & 0x20) || need_sense)) {
1201 qc->ap->ops->tf_read(qc->ap, &qc->tf);
1202 ata_gen_ata_desc_sense(qc);
1205 cmd->result = SAM_STAT_GOOD;
1207 qc->ap->ops->tf_read(qc->ap, &qc->tf);
1209 /* TODO: decide which descriptor format to use
1210 * for 48b LBA devices and call that here
1211 * instead of the fixed desc, which is only
1212 * good for smaller LBA (and maybe CHS?)
1215 ata_gen_fixed_sense(qc);
1220 /* The ata_gen_..._sense routines fill in tf */
1221 ata_dump_status(qc->ap->id, &qc->tf);
1230 * ata_scsi_translate - Translate then issue SCSI command to ATA device
1231 * @ap: ATA port to which the command is addressed
1232 * @dev: ATA device to which the command is addressed
1233 * @cmd: SCSI command to execute
1234 * @done: SCSI command completion function
1235 * @xlat_func: Actor which translates @cmd to an ATA taskfile
1237 * Our ->queuecommand() function has decided that the SCSI
1238 * command issued can be directly translated into an ATA
1239 * command, rather than handled internally.
1241 * This function sets up an ata_queued_cmd structure for the
1242 * SCSI command, and sends that ata_queued_cmd to the hardware.
1244 * The xlat_func argument (actor) returns 0 if ready to execute
1245 * ATA command, else 1 to finish translation. If 1 is returned
1246 * then cmd->result (and possibly cmd->sense_buffer) are assumed
1247 * to be set reflecting an error condition or clean (early)
1251 * spin_lock_irqsave(host_set lock)
1254 static void ata_scsi_translate(struct ata_port *ap, struct ata_device *dev,
1255 struct scsi_cmnd *cmd,
1256 void (*done)(struct scsi_cmnd *),
1257 ata_xlat_func_t xlat_func)
1259 struct ata_queued_cmd *qc;
1260 u8 *scsicmd = cmd->cmnd;
1264 qc = ata_scsi_qc_new(ap, dev, cmd, done);
1268 /* data is present; dma-map it */
1269 if (cmd->sc_data_direction == DMA_FROM_DEVICE ||
1270 cmd->sc_data_direction == DMA_TO_DEVICE) {
1271 if (unlikely(cmd->request_bufflen < 1)) {
1272 printk(KERN_WARNING "ata%u(%u): WARNING: zero len r/w req\n",
1273 ap->id, dev->devno);
1278 ata_sg_init(qc, cmd->request_buffer, cmd->use_sg);
1280 ata_sg_init_one(qc, cmd->request_buffer,
1281 cmd->request_bufflen);
1283 qc->dma_dir = cmd->sc_data_direction;
1286 qc->complete_fn = ata_scsi_qc_complete;
1288 if (xlat_func(qc, scsicmd))
1291 /* select device, send command to hardware */
1300 DPRINTK("EXIT - early finish (good or error)\n");
1306 cmd->result = (DID_ERROR << 16);
1308 DPRINTK("EXIT - internal\n");
1313 * ata_scsi_rbuf_get - Map response buffer.
1314 * @cmd: SCSI command containing buffer to be mapped.
1315 * @buf_out: Pointer to mapped area.
1317 * Maps buffer contained within SCSI command @cmd.
1320 * spin_lock_irqsave(host_set lock)
1323 * Length of response buffer.
1326 static unsigned int ata_scsi_rbuf_get(struct scsi_cmnd *cmd, u8 **buf_out)
1329 unsigned int buflen;
1332 struct scatterlist *sg;
1334 sg = (struct scatterlist *) cmd->request_buffer;
1335 buf = kmap_atomic(sg->page, KM_USER0) + sg->offset;
1336 buflen = sg->length;
1338 buf = cmd->request_buffer;
1339 buflen = cmd->request_bufflen;
1347 * ata_scsi_rbuf_put - Unmap response buffer.
1348 * @cmd: SCSI command containing buffer to be unmapped.
1349 * @buf: buffer to unmap
1351 * Unmaps response buffer contained within @cmd.
1354 * spin_lock_irqsave(host_set lock)
1357 static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, u8 *buf)
1360 struct scatterlist *sg;
1362 sg = (struct scatterlist *) cmd->request_buffer;
1363 kunmap_atomic(buf - sg->offset, KM_USER0);
1368 * ata_scsi_rbuf_fill - wrapper for SCSI command simulators
1369 * @args: device IDENTIFY data / SCSI command of interest.
1370 * @actor: Callback hook for desired SCSI command simulator
1372 * Takes care of the hard work of simulating a SCSI command...
1373 * Mapping the response buffer, calling the command's handler,
1374 * and handling the handler's return value. This return value
1375 * indicates whether the handler wishes the SCSI command to be
1376 * completed successfully (0), or not (in which case cmd->result
1377 * and sense buffer are assumed to be set).
1380 * spin_lock_irqsave(host_set lock)
1383 void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
1384 unsigned int (*actor) (struct ata_scsi_args *args,
1385 u8 *rbuf, unsigned int buflen))
1388 unsigned int buflen, rc;
1389 struct scsi_cmnd *cmd = args->cmd;
1391 buflen = ata_scsi_rbuf_get(cmd, &rbuf);
1392 memset(rbuf, 0, buflen);
1393 rc = actor(args, rbuf, buflen);
1394 ata_scsi_rbuf_put(cmd, rbuf);
1397 cmd->result = SAM_STAT_GOOD;
1402 * ata_scsiop_inq_std - Simulate INQUIRY command
1403 * @args: device IDENTIFY data / SCSI command of interest.
1404 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1405 * @buflen: Response buffer length.
1407 * Returns standard device identification data associated
1408 * with non-VPD INQUIRY command output.
1411 * spin_lock_irqsave(host_set lock)
1414 unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf,
1415 unsigned int buflen)
1420 0x5, /* claim SPC-3 version compatibility */
1425 /* set scsi removeable (RMB) bit per ata bit */
1426 if (ata_id_removeable(args->id))
1431 memcpy(rbuf, hdr, sizeof(hdr));
1434 memcpy(&rbuf[8], "ATA ", 8);
1435 ata_id_string(args->id, &rbuf[16], ATA_ID_PROD_OFS, 16);
1436 ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV_OFS, 4);
1437 if (rbuf[32] == 0 || rbuf[32] == ' ')
1438 memcpy(&rbuf[32], "n/a ", 4);
1442 const u8 versions[] = {
1443 0x60, /* SAM-3 (no version claimed) */
1446 0x20, /* SBC-2 (no version claimed) */
1449 0x60 /* SPC-3 (no version claimed) */
1452 memcpy(rbuf + 59, versions, sizeof(versions));
1459 * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages
1460 * @args: device IDENTIFY data / SCSI command of interest.
1461 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1462 * @buflen: Response buffer length.
1464 * Returns list of inquiry VPD pages available.
1467 * spin_lock_irqsave(host_set lock)
1470 unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf,
1471 unsigned int buflen)
1473 const u8 pages[] = {
1474 0x00, /* page 0x00, this page */
1475 0x80, /* page 0x80, unit serial no page */
1476 0x83 /* page 0x83, device ident page */
1478 rbuf[3] = sizeof(pages); /* number of supported VPD pages */
1481 memcpy(rbuf + 4, pages, sizeof(pages));
1487 * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number
1488 * @args: device IDENTIFY data / SCSI command of interest.
1489 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1490 * @buflen: Response buffer length.
1492 * Returns ATA device serial number.
1495 * spin_lock_irqsave(host_set lock)
1498 unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf,
1499 unsigned int buflen)
1503 0x80, /* this page code */
1505 ATA_SERNO_LEN, /* page len */
1507 memcpy(rbuf, hdr, sizeof(hdr));
1509 if (buflen > (ATA_SERNO_LEN + 4 - 1))
1510 ata_id_string(args->id, (unsigned char *) &rbuf[4],
1511 ATA_ID_SERNO_OFS, ATA_SERNO_LEN);
1517 * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity
1518 * @args: device IDENTIFY data / SCSI command of interest.
1519 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1520 * @buflen: Response buffer length.
1522 * Yields two logical unit device identification designators:
1523 * - vendor specific ASCII containing the ATA serial number
1524 * - SAT defined "t10 vendor id based" containing ASCII vendor
1525 * name ("ATA "), model and serial numbers.
1528 * spin_lock_irqsave(host_set lock)
1531 unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf,
1532 unsigned int buflen)
1535 const int sat_model_serial_desc_len = 68;
1536 const int ata_model_byte_len = 40;
1538 rbuf[1] = 0x83; /* this page code */
1541 if (buflen > (ATA_SERNO_LEN + num + 3)) {
1542 /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */
1544 rbuf[num + 3] = ATA_SERNO_LEN;
1546 ata_id_string(args->id, (unsigned char *) rbuf + num,
1547 ATA_ID_SERNO_OFS, ATA_SERNO_LEN);
1548 num += ATA_SERNO_LEN;
1550 if (buflen > (sat_model_serial_desc_len + num + 3)) {
1551 /* SAT defined lu model and serial numbers descriptor */
1552 /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */
1555 rbuf[num + 3] = sat_model_serial_desc_len;
1557 memcpy(rbuf + num, "ATA ", 8);
1559 ata_id_string(args->id, (unsigned char *) rbuf + num,
1560 ATA_ID_PROD_OFS, ata_model_byte_len);
1561 num += ata_model_byte_len;
1562 ata_id_string(args->id, (unsigned char *) rbuf + num,
1563 ATA_ID_SERNO_OFS, ATA_SERNO_LEN);
1564 num += ATA_SERNO_LEN;
1566 rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */
1571 * ata_scsiop_noop - Command handler that simply returns success.
1572 * @args: device IDENTIFY data / SCSI command of interest.
1573 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1574 * @buflen: Response buffer length.
1576 * No operation. Simply returns success to caller, to indicate
1577 * that the caller should successfully complete this SCSI command.
1580 * spin_lock_irqsave(host_set lock)
1583 unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf,
1584 unsigned int buflen)
1591 * ata_msense_push - Push data onto MODE SENSE data output buffer
1592 * @ptr_io: (input/output) Location to store more output data
1593 * @last: End of output data buffer
1594 * @buf: Pointer to BLOB being added to output buffer
1595 * @buflen: Length of BLOB
1597 * Store MODE SENSE data on an output buffer.
1603 static void ata_msense_push(u8 **ptr_io, const u8 *last,
1604 const u8 *buf, unsigned int buflen)
1608 if ((ptr + buflen - 1) > last)
1611 memcpy(ptr, buf, buflen);
1619 * ata_msense_caching - Simulate MODE SENSE caching info page
1620 * @id: device IDENTIFY data
1621 * @ptr_io: (input/output) Location to store more output data
1622 * @last: End of output data buffer
1624 * Generate a caching info page, which conditionally indicates
1625 * write caching to the SCSI layer, depending on device
1632 static unsigned int ata_msense_caching(u16 *id, u8 **ptr_io,
1635 u8 page[CACHE_MPAGE_LEN];
1637 memcpy(page, def_cache_mpage, sizeof(page));
1638 if (ata_id_wcache_enabled(id))
1639 page[2] |= (1 << 2); /* write cache enable */
1640 if (!ata_id_rahead_enabled(id))
1641 page[12] |= (1 << 5); /* disable read ahead */
1643 ata_msense_push(ptr_io, last, page, sizeof(page));
1644 return sizeof(page);
1648 * ata_msense_ctl_mode - Simulate MODE SENSE control mode page
1649 * @dev: Device associated with this MODE SENSE command
1650 * @ptr_io: (input/output) Location to store more output data
1651 * @last: End of output data buffer
1653 * Generate a generic MODE SENSE control mode page.
1659 static unsigned int ata_msense_ctl_mode(u8 **ptr_io, const u8 *last)
1661 ata_msense_push(ptr_io, last, def_control_mpage,
1662 sizeof(def_control_mpage));
1663 return sizeof(def_control_mpage);
1667 * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page
1668 * @dev: Device associated with this MODE SENSE command
1669 * @ptr_io: (input/output) Location to store more output data
1670 * @last: End of output data buffer
1672 * Generate a generic MODE SENSE r/w error recovery page.
1678 static unsigned int ata_msense_rw_recovery(u8 **ptr_io, const u8 *last)
1681 ata_msense_push(ptr_io, last, def_rw_recovery_mpage,
1682 sizeof(def_rw_recovery_mpage));
1683 return sizeof(def_rw_recovery_mpage);
1687 * We can turn this into a real blacklist if it's needed, for now just
1688 * blacklist any Maxtor BANC1G10 revision firmware
1690 static int ata_dev_supports_fua(u16 *id)
1692 unsigned char model[41], fw[9];
1696 if (!ata_id_has_fua(id))
1699 ata_id_c_string(id, model, ATA_ID_PROD_OFS, sizeof(model));
1700 ata_id_c_string(id, fw, ATA_ID_FW_REV_OFS, sizeof(fw));
1702 if (strcmp(model, "Maxtor"))
1704 if (strcmp(fw, "BANC1G10"))
1707 return 0; /* blacklisted */
1711 * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands
1712 * @args: device IDENTIFY data / SCSI command of interest.
1713 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1714 * @buflen: Response buffer length.
1716 * Simulate MODE SENSE commands. Assume this is invoked for direct
1717 * access devices (e.g. disks) only. There should be no block
1718 * descriptor for other device types.
1721 * spin_lock_irqsave(host_set lock)
1724 unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
1725 unsigned int buflen)
1727 struct ata_device *dev = args->dev;
1728 u8 *scsicmd = args->cmd->cmnd, *p, *last;
1729 const u8 sat_blk_desc[] = {
1730 0, 0, 0, 0, /* number of blocks: sat unspecified */
1732 0, 0x2, 0x0 /* block length: 512 bytes */
1735 unsigned int ebd, page_control, six_byte, output_len, alloc_len, minlen;
1740 six_byte = (scsicmd[0] == MODE_SENSE);
1741 ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */
1743 * LLBA bit in msense(10) ignored (compliant)
1746 page_control = scsicmd[2] >> 6;
1747 switch (page_control) {
1748 case 0: /* current */
1749 break; /* supported */
1751 goto saving_not_supp;
1752 case 1: /* changeable */
1753 case 2: /* defaults */
1759 output_len = 4 + (ebd ? 8 : 0);
1760 alloc_len = scsicmd[4];
1762 output_len = 8 + (ebd ? 8 : 0);
1763 alloc_len = (scsicmd[7] << 8) + scsicmd[8];
1765 minlen = (alloc_len < buflen) ? alloc_len : buflen;
1767 p = rbuf + output_len;
1768 last = rbuf + minlen - 1;
1770 pg = scsicmd[2] & 0x3f;
1773 * No mode subpages supported (yet) but asking for _all_
1774 * subpages may be valid
1776 if (spg && (spg != ALL_SUB_MPAGES))
1780 case RW_RECOVERY_MPAGE:
1781 output_len += ata_msense_rw_recovery(&p, last);
1785 output_len += ata_msense_caching(args->id, &p, last);
1788 case CONTROL_MPAGE: {
1789 output_len += ata_msense_ctl_mode(&p, last);
1794 output_len += ata_msense_rw_recovery(&p, last);
1795 output_len += ata_msense_caching(args->id, &p, last);
1796 output_len += ata_msense_ctl_mode(&p, last);
1799 default: /* invalid page code */
1807 if (ata_dev_supports_fua(args->id) && dev->flags & ATA_DFLAG_LBA48 &&
1808 (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count))
1813 rbuf[0] = output_len;
1818 rbuf[3] = sizeof(sat_blk_desc);
1820 memcpy(rbuf + 4, sat_blk_desc,
1821 sizeof(sat_blk_desc));
1825 rbuf[0] = output_len >> 8;
1827 rbuf[1] = output_len;
1832 rbuf[7] = sizeof(sat_blk_desc);
1834 memcpy(rbuf + 8, sat_blk_desc,
1835 sizeof(sat_blk_desc));
1841 ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0);
1842 /* "Invalid field in cbd" */
1846 ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0);
1847 /* "Saving parameters not supported" */
1852 * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands
1853 * @args: device IDENTIFY data / SCSI command of interest.
1854 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1855 * @buflen: Response buffer length.
1857 * Simulate READ CAPACITY commands.
1860 * spin_lock_irqsave(host_set lock)
1863 unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf,
1864 unsigned int buflen)
1871 if (ata_id_has_lba(args->id)) {
1872 if (ata_id_has_lba48(args->id))
1873 n_sectors = ata_id_u64(args->id, 100);
1875 n_sectors = ata_id_u32(args->id, 60);
1877 /* CHS default translation */
1878 n_sectors = args->id[1] * args->id[3] * args->id[6];
1880 if (ata_id_current_chs_valid(args->id))
1881 /* CHS current translation */
1882 n_sectors = ata_id_u32(args->id, 57);
1885 n_sectors--; /* ATA TotalUserSectors - 1 */
1887 if (args->cmd->cmnd[0] == READ_CAPACITY) {
1888 if( n_sectors >= 0xffffffffULL )
1889 tmp = 0xffffffff ; /* Return max count on overflow */
1893 /* sector count, 32-bit */
1894 rbuf[0] = tmp >> (8 * 3);
1895 rbuf[1] = tmp >> (8 * 2);
1896 rbuf[2] = tmp >> (8 * 1);
1900 tmp = ATA_SECT_SIZE;
1905 /* sector count, 64-bit */
1906 tmp = n_sectors >> (8 * 4);
1907 rbuf[2] = tmp >> (8 * 3);
1908 rbuf[3] = tmp >> (8 * 2);
1909 rbuf[4] = tmp >> (8 * 1);
1912 rbuf[6] = tmp >> (8 * 3);
1913 rbuf[7] = tmp >> (8 * 2);
1914 rbuf[8] = tmp >> (8 * 1);
1918 tmp = ATA_SECT_SIZE;
1919 rbuf[12] = tmp >> 8;
1927 * ata_scsiop_report_luns - Simulate REPORT LUNS command
1928 * @args: device IDENTIFY data / SCSI command of interest.
1929 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1930 * @buflen: Response buffer length.
1932 * Simulate REPORT LUNS command.
1935 * spin_lock_irqsave(host_set lock)
1938 unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf,
1939 unsigned int buflen)
1942 rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */
1948 * ata_scsi_set_sense - Set SCSI sense data and status
1949 * @cmd: SCSI request to be handled
1950 * @sk: SCSI-defined sense key
1951 * @asc: SCSI-defined additional sense code
1952 * @ascq: SCSI-defined additional sense code qualifier
1954 * Helper function that builds a valid fixed format, current
1955 * response code and the given sense key (sk), additional sense
1956 * code (asc) and additional sense code qualifier (ascq) with
1957 * a SCSI command status of %SAM_STAT_CHECK_CONDITION and
1958 * DRIVER_SENSE set in the upper bits of scsi_cmnd::result .
1964 void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
1966 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
1968 cmd->sense_buffer[0] = 0x70; /* fixed format, current */
1969 cmd->sense_buffer[2] = sk;
1970 cmd->sense_buffer[7] = 18 - 8; /* additional sense length */
1971 cmd->sense_buffer[12] = asc;
1972 cmd->sense_buffer[13] = ascq;
1976 * ata_scsi_badcmd - End a SCSI request with an error
1977 * @cmd: SCSI request to be handled
1978 * @done: SCSI command completion function
1979 * @asc: SCSI-defined additional sense code
1980 * @ascq: SCSI-defined additional sense code qualifier
1982 * Helper function that completes a SCSI command with
1983 * %SAM_STAT_CHECK_CONDITION, with a sense key %ILLEGAL_REQUEST
1984 * and the specified additional sense codes.
1987 * spin_lock_irqsave(host_set lock)
1990 void ata_scsi_badcmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), u8 asc, u8 ascq)
1993 ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, asc, ascq);
1998 static void atapi_sense_complete(struct ata_queued_cmd *qc)
2000 if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) {
2001 /* FIXME: not quite right; we don't want the
2002 * translation of taskfile registers into
2003 * a sense descriptors, since that's only
2004 * correct for ATA, not ATAPI
2006 qc->ap->ops->tf_read(qc->ap, &qc->tf);
2007 ata_gen_ata_desc_sense(qc);
2010 qc->scsidone(qc->scsicmd);
2014 /* is it pointless to prefer PIO for "safety reasons"? */
2015 static inline int ata_pio_use_silly(struct ata_port *ap)
2017 return (ap->flags & ATA_FLAG_PIO_DMA);
2020 static void atapi_request_sense(struct ata_queued_cmd *qc)
2022 struct ata_port *ap = qc->ap;
2023 struct scsi_cmnd *cmd = qc->scsicmd;
2025 DPRINTK("ATAPI request sense\n");
2027 /* FIXME: is this needed? */
2028 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
2030 ap->ops->tf_read(ap, &qc->tf);
2032 /* fill these in, for the case where they are -not- overwritten */
2033 cmd->sense_buffer[0] = 0x70;
2034 cmd->sense_buffer[2] = qc->tf.feature >> 4;
2038 ata_sg_init_one(qc, cmd->sense_buffer, sizeof(cmd->sense_buffer));
2039 qc->dma_dir = DMA_FROM_DEVICE;
2041 memset(&qc->cdb, 0, qc->dev->cdb_len);
2042 qc->cdb[0] = REQUEST_SENSE;
2043 qc->cdb[4] = SCSI_SENSE_BUFFERSIZE;
2045 qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
2046 qc->tf.command = ATA_CMD_PACKET;
2048 if (ata_pio_use_silly(ap)) {
2049 qc->tf.protocol = ATA_PROT_ATAPI_DMA;
2050 qc->tf.feature |= ATAPI_PKT_DMA;
2052 qc->tf.protocol = ATA_PROT_ATAPI;
2053 qc->tf.lbam = (8 * 1024) & 0xff;
2054 qc->tf.lbah = (8 * 1024) >> 8;
2056 qc->nbytes = SCSI_SENSE_BUFFERSIZE;
2058 qc->complete_fn = atapi_sense_complete;
2065 static void atapi_qc_complete(struct ata_queued_cmd *qc)
2067 struct scsi_cmnd *cmd = qc->scsicmd;
2068 unsigned int err_mask = qc->err_mask;
2070 VPRINTK("ENTER, err_mask 0x%X\n", err_mask);
2072 if (unlikely(err_mask & AC_ERR_DEV)) {
2073 cmd->result = SAM_STAT_CHECK_CONDITION;
2074 atapi_request_sense(qc);
2076 } else if (unlikely(err_mask)) {
2077 /* FIXME: not quite right; we don't want the
2078 * translation of taskfile registers into
2079 * a sense descriptors, since that's only
2080 * correct for ATA, not ATAPI
2082 qc->ap->ops->tf_read(qc->ap, &qc->tf);
2083 ata_gen_ata_desc_sense(qc);
2085 u8 *scsicmd = cmd->cmnd;
2087 if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) {
2089 unsigned int buflen;
2091 buflen = ata_scsi_rbuf_get(cmd, &buf);
2093 /* ATAPI devices typically report zero for their SCSI version,
2094 * and sometimes deviate from the spec WRT response data
2095 * format. If SCSI version is reported as zero like normal,
2096 * then we make the following fixups: 1) Fake MMC-5 version,
2097 * to indicate to the Linux scsi midlayer this is a modern
2098 * device. 2) Ensure response data format / ATAPI information
2099 * are always correct.
2106 ata_scsi_rbuf_put(cmd, buf);
2109 cmd->result = SAM_STAT_GOOD;
2116 * atapi_xlat - Initialize PACKET taskfile
2117 * @qc: command structure to be initialized
2118 * @scsicmd: SCSI CDB associated with this PACKET command
2121 * spin_lock_irqsave(host_set lock)
2124 * Zero on success, non-zero on failure.
2127 static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
2129 struct scsi_cmnd *cmd = qc->scsicmd;
2130 struct ata_device *dev = qc->dev;
2131 int using_pio = (dev->flags & ATA_DFLAG_PIO);
2132 int nodata = (cmd->sc_data_direction == DMA_NONE);
2135 /* Check whether ATAPI DMA is safe */
2136 if (ata_check_atapi_dma(qc))
2139 memcpy(&qc->cdb, scsicmd, dev->cdb_len);
2141 qc->complete_fn = atapi_qc_complete;
2143 qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
2144 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
2145 qc->tf.flags |= ATA_TFLAG_WRITE;
2146 DPRINTK("direction: write\n");
2149 qc->tf.command = ATA_CMD_PACKET;
2151 /* no data, or PIO data xfer */
2152 if (using_pio || nodata) {
2154 qc->tf.protocol = ATA_PROT_ATAPI_NODATA;
2156 qc->tf.protocol = ATA_PROT_ATAPI;
2157 qc->tf.lbam = (8 * 1024) & 0xff;
2158 qc->tf.lbah = (8 * 1024) >> 8;
2163 qc->tf.protocol = ATA_PROT_ATAPI_DMA;
2164 qc->tf.feature |= ATAPI_PKT_DMA;
2166 #ifdef ATAPI_ENABLE_DMADIR
2167 /* some SATA bridges need us to indicate data xfer direction */
2168 if (cmd->sc_data_direction != DMA_TO_DEVICE)
2169 qc->tf.feature |= ATAPI_DMADIR;
2173 qc->nbytes = cmd->bufflen;
2179 * ata_scsi_find_dev - lookup ata_device from scsi_cmnd
2180 * @ap: ATA port to which the device is attached
2181 * @scsidev: SCSI device from which we derive the ATA device
2183 * Given various information provided in struct scsi_cmnd,
2184 * map that onto an ATA bus, and using that mapping
2185 * determine which ata_device is associated with the
2186 * SCSI command to be sent.
2189 * spin_lock_irqsave(host_set lock)
2192 * Associated ATA device, or %NULL if not found.
2195 static struct ata_device *
2196 ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev)
2198 struct ata_device *dev;
2200 /* skip commands not addressed to targets we simulate */
2201 if (likely(scsidev->id < ATA_MAX_DEVICES))
2202 dev = &ap->device[scsidev->id];
2206 if (unlikely((scsidev->channel != 0) ||
2207 (scsidev->lun != 0)))
2210 if (unlikely(!ata_dev_enabled(dev)))
2213 if (!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) {
2214 if (unlikely(dev->class == ATA_DEV_ATAPI)) {
2215 printk(KERN_WARNING "ata%u(%u): WARNING: ATAPI is %s, device ignored.\n",
2216 ap->id, dev->devno, atapi_enabled ? "not supported with this driver" : "disabled");
2225 * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value.
2226 * @byte1: Byte 1 from pass-thru CDB.
2229 * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise.
2232 ata_scsi_map_proto(u8 byte1)
2234 switch((byte1 & 0x1e) >> 1) {
2235 case 3: /* Non-data */
2236 return ATA_PROT_NODATA;
2239 return ATA_PROT_DMA;
2241 case 4: /* PIO Data-in */
2242 case 5: /* PIO Data-out */
2243 return ATA_PROT_PIO;
2245 case 10: /* Device Reset */
2246 case 0: /* Hard Reset */
2248 case 2: /* Bus Idle */
2249 case 7: /* Packet */
2250 case 8: /* DMA Queued */
2251 case 9: /* Device Diagnostic */
2252 case 11: /* UDMA Data-in */
2253 case 12: /* UDMA Data-Out */
2254 case 13: /* FPDMA */
2255 default: /* Reserved */
2259 return ATA_PROT_UNKNOWN;
2263 * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile
2264 * @qc: command structure to be initialized
2265 * @scsicmd: SCSI command to convert
2267 * Handles either 12 or 16-byte versions of the CDB.
2270 * Zero on success, non-zero on failure.
2273 ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
2275 struct ata_taskfile *tf = &(qc->tf);
2276 struct scsi_cmnd *cmd = qc->scsicmd;
2278 if ((tf->protocol = ata_scsi_map_proto(scsicmd[1])) == ATA_PROT_UNKNOWN)
2281 if (scsicmd[1] & 0xe0)
2282 /* PIO multi not supported yet */
2286 * 12 and 16 byte CDBs use different offsets to
2287 * provide the various register values.
2289 if (scsicmd[0] == ATA_16) {
2291 * 16-byte CDB - may contain extended commands.
2293 * If that is the case, copy the upper byte register values.
2295 if (scsicmd[1] & 0x01) {
2296 tf->hob_feature = scsicmd[3];
2297 tf->hob_nsect = scsicmd[5];
2298 tf->hob_lbal = scsicmd[7];
2299 tf->hob_lbam = scsicmd[9];
2300 tf->hob_lbah = scsicmd[11];
2301 tf->flags |= ATA_TFLAG_LBA48;
2303 tf->flags &= ~ATA_TFLAG_LBA48;
2306 * Always copy low byte, device and command registers.
2308 tf->feature = scsicmd[4];
2309 tf->nsect = scsicmd[6];
2310 tf->lbal = scsicmd[8];
2311 tf->lbam = scsicmd[10];
2312 tf->lbah = scsicmd[12];
2313 tf->device = scsicmd[13];
2314 tf->command = scsicmd[14];
2317 * 12-byte CDB - incapable of extended commands.
2319 tf->flags &= ~ATA_TFLAG_LBA48;
2321 tf->feature = scsicmd[3];
2322 tf->nsect = scsicmd[4];
2323 tf->lbal = scsicmd[5];
2324 tf->lbam = scsicmd[6];
2325 tf->lbah = scsicmd[7];
2326 tf->device = scsicmd[8];
2327 tf->command = scsicmd[9];
2330 * If slave is possible, enforce correct master/slave bit
2332 if (qc->ap->flags & ATA_FLAG_SLAVE_POSS)
2333 tf->device = qc->dev->devno ?
2334 tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1;
2337 * Filter SET_FEATURES - XFER MODE command -- otherwise,
2338 * SET_FEATURES - XFER MODE must be preceded/succeeded
2339 * by an update to hardware-specific registers for each
2340 * controller (i.e. the reason for ->set_piomode(),
2341 * ->set_dmamode(), and ->post_set_mode() hooks).
2343 if ((tf->command == ATA_CMD_SET_FEATURES)
2344 && (tf->feature == SETFEATURES_XFER))
2348 * Set flags so that all registers will be written,
2349 * and pass on write indication (used for PIO/DMA
2352 tf->flags |= (ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE);
2354 if (cmd->sc_data_direction == DMA_TO_DEVICE)
2355 tf->flags |= ATA_TFLAG_WRITE;
2358 * Set transfer length.
2360 * TODO: find out if we need to do more here to
2361 * cover scatter/gather case.
2363 qc->nsect = cmd->bufflen / ATA_SECT_SIZE;
2368 ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x00);
2369 /* "Invalid field in cdb" */
2374 * ata_get_xlat_func - check if SCSI to ATA translation is possible
2376 * @cmd: SCSI command opcode to consider
2378 * Look up the SCSI command given, and determine whether the
2379 * SCSI command is to be translated or simulated.
2382 * Pointer to translation function if possible, %NULL if not.
2385 static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
2395 return ata_scsi_rw_xlat;
2397 case SYNCHRONIZE_CACHE:
2398 if (ata_try_flush_cache(dev))
2399 return ata_scsi_flush_xlat;
2404 return ata_scsi_verify_xlat;
2408 return ata_scsi_pass_thru;
2411 return ata_scsi_start_stop_xlat;
2418 * ata_scsi_dump_cdb - dump SCSI command contents to dmesg
2419 * @ap: ATA port to which the command was being sent
2420 * @cmd: SCSI command to dump
2422 * Prints the contents of a SCSI command via printk().
2425 static inline void ata_scsi_dump_cdb(struct ata_port *ap,
2426 struct scsi_cmnd *cmd)
2429 struct scsi_device *scsidev = cmd->device;
2430 u8 *scsicmd = cmd->cmnd;
2432 DPRINTK("CDB (%u:%d,%d,%d) %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
2434 scsidev->channel, scsidev->id, scsidev->lun,
2435 scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3],
2436 scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7],
2441 static inline void __ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *),
2442 struct ata_port *ap, struct ata_device *dev)
2444 if (dev->class == ATA_DEV_ATA) {
2445 ata_xlat_func_t xlat_func = ata_get_xlat_func(dev,
2449 ata_scsi_translate(ap, dev, cmd, done, xlat_func);
2451 ata_scsi_simulate(ap, dev, cmd, done);
2453 ata_scsi_translate(ap, dev, cmd, done, atapi_xlat);
2457 * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device
2458 * @cmd: SCSI command to be sent
2459 * @done: Completion function, called when command is complete
2461 * In some cases, this function translates SCSI commands into
2462 * ATA taskfiles, and queues the taskfiles to be sent to
2463 * hardware. In other cases, this function simulates a
2464 * SCSI device by evaluating and responding to certain
2465 * SCSI commands. This creates the overall effect of
2466 * ATA and ATAPI devices appearing as SCSI devices.
2469 * Releases scsi-layer-held lock, and obtains host_set lock.
2475 int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
2477 struct ata_port *ap;
2478 struct ata_device *dev;
2479 struct scsi_device *scsidev = cmd->device;
2480 struct Scsi_Host *shost = scsidev->host;
2482 ap = (struct ata_port *) &shost->hostdata[0];
2484 spin_unlock(shost->host_lock);
2485 spin_lock(&ap->host_set->lock);
2487 ata_scsi_dump_cdb(ap, cmd);
2489 dev = ata_scsi_find_dev(ap, scsidev);
2491 __ata_scsi_queuecmd(cmd, done, ap, dev);
2493 cmd->result = (DID_BAD_TARGET << 16);
2497 spin_unlock(&ap->host_set->lock);
2498 spin_lock(shost->host_lock);
2503 * ata_scsi_simulate - simulate SCSI command on ATA device
2504 * @ap: port the device is connected to
2505 * @dev: the target device
2506 * @cmd: SCSI command being sent to device.
2507 * @done: SCSI command completion function.
2509 * Interprets and directly executes a select list of SCSI commands
2510 * that can be handled internally.
2513 * spin_lock_irqsave(host_set lock)
2516 void ata_scsi_simulate(struct ata_port *ap, struct ata_device *dev,
2517 struct scsi_cmnd *cmd,
2518 void (*done)(struct scsi_cmnd *))
2520 struct ata_scsi_args args;
2521 const u8 *scsicmd = cmd->cmnd;
2529 switch(scsicmd[0]) {
2530 /* no-op's, complete with success */
2531 case SYNCHRONIZE_CACHE:
2535 case TEST_UNIT_READY:
2536 case FORMAT_UNIT: /* FIXME: correct? */
2537 case SEND_DIAGNOSTIC: /* FIXME: correct? */
2538 ata_scsi_rbuf_fill(&args, ata_scsiop_noop);
2542 if (scsicmd[1] & 2) /* is CmdDt set? */
2543 ata_scsi_invalid_field(cmd, done);
2544 else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */
2545 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std);
2546 else if (scsicmd[2] == 0x00)
2547 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00);
2548 else if (scsicmd[2] == 0x80)
2549 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80);
2550 else if (scsicmd[2] == 0x83)
2551 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83);
2553 ata_scsi_invalid_field(cmd, done);
2558 ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense);
2561 case MODE_SELECT: /* unconditionally return */
2562 case MODE_SELECT_10: /* bad-field-in-cdb */
2563 ata_scsi_invalid_field(cmd, done);
2567 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
2570 case SERVICE_ACTION_IN:
2571 if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16)
2572 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
2574 ata_scsi_invalid_field(cmd, done);
2578 ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns);
2581 /* mandatory commands we haven't implemented yet */
2584 /* all other commands */
2586 ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0);
2587 /* "Invalid command operation code" */
2593 void ata_scsi_scan_host(struct ata_port *ap)
2595 struct ata_device *dev;
2598 if (ap->flags & ATA_FLAG_DISABLED)
2601 for (i = 0; i < ATA_MAX_DEVICES; i++) {
2602 dev = &ap->device[i];
2604 if (ata_dev_enabled(dev))
2605 scsi_scan_target(&ap->host->shost_gendev, 0, i, 0, 0);