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>
41 #include <scsi/scsi_host.h>
42 #include <linux/libata.h>
43 #include <asm/uaccess.h>
47 typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, u8 *scsicmd);
48 static struct ata_device *
49 ata_scsi_find_dev(struct ata_port *ap, struct scsi_device *scsidev);
53 * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd.
54 * @sdev: SCSI device for which BIOS geometry is to be determined
55 * @bdev: block device associated with @sdev
56 * @capacity: capacity of SCSI device
57 * @geom: location to which geometry will be output
59 * Generic bios head/sector/cylinder calculator
60 * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS)
61 * mapping. Some situations may arise where the disk is not
62 * bootable if this is not used.
65 * Defined by the SCSI layer. We don't really care.
70 int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev,
71 sector_t capacity, int geom[])
75 sector_div(capacity, 255*63);
81 int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
84 struct ata_device *dev;
85 int val = -EINVAL, rc = -EINVAL;
87 ap = (struct ata_port *) &scsidev->host->hostdata[0];
91 dev = ata_scsi_find_dev(ap, scsidev);
98 case ATA_IOC_GET_IO32:
100 if (copy_to_user(arg, &val, 1))
104 case ATA_IOC_SET_IO32:
105 val = (unsigned long) arg;
120 * ata_scsi_qc_new - acquire new ata_queued_cmd reference
121 * @ap: ATA port to which the new command is attached
122 * @dev: ATA device to which the new command is attached
123 * @cmd: SCSI command that originated this ATA command
124 * @done: SCSI command completion function
126 * Obtain a reference to an unused ata_queued_cmd structure,
127 * which is the basic libata structure representing a single
128 * ATA command sent to the hardware.
130 * If a command was available, fill in the SCSI-specific
131 * portions of the structure with information on the
135 * spin_lock_irqsave(host_set lock)
138 * Command allocated, or %NULL if none available.
140 struct ata_queued_cmd *ata_scsi_qc_new(struct ata_port *ap,
141 struct ata_device *dev,
142 struct scsi_cmnd *cmd,
143 void (*done)(struct scsi_cmnd *))
145 struct ata_queued_cmd *qc;
147 qc = ata_qc_new_init(ap, dev);
153 qc->sg = (struct scatterlist *) cmd->request_buffer;
154 qc->n_elem = cmd->use_sg;
160 cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1);
168 * ata_to_sense_error - convert ATA error to SCSI error
169 * @qc: Command that we are erroring out
170 * @drv_stat: value contained in ATA status register
172 * Converts an ATA error into a SCSI error. While we are at it
173 * we decode and dump the ATA error for the user so that they
174 * have some idea what really happened at the non make-believe
178 * spin_lock_irqsave(host_set lock)
181 void ata_to_sense_error(struct ata_queued_cmd *qc, u8 drv_stat)
183 struct scsi_cmnd *cmd = qc->scsicmd;
185 unsigned char *sb = cmd->sense_buffer;
186 /* Based on the 3ware driver translation table */
187 static unsigned char sense_table[][4] = {
189 {0xd1, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command
191 {0xd0, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command
193 {0x61, HARDWARE_ERROR, 0x00, 0x00}, // Device fault Hardware error
194 /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */
195 {0x84, ABORTED_COMMAND, 0x47, 0x00}, // Data CRC error SCSI parity error
196 /* MC|ID|ABRT|TRK0|MARK */
197 {0x37, NOT_READY, 0x04, 0x00}, // Unit offline Not ready
199 {0x09, NOT_READY, 0x04, 0x00}, // Unrecovered disk error Not ready
200 /* Bad address mark */
201 {0x01, MEDIUM_ERROR, 0x13, 0x00}, // Address mark not found Address mark not found for data field
203 {0x02, HARDWARE_ERROR, 0x00, 0x00}, // Track 0 not found Hardware error
205 {0x04, ABORTED_COMMAND, 0x00, 0x00}, // Aborted command Aborted command
206 /* Media change request */
207 {0x08, NOT_READY, 0x04, 0x00}, // Media change request FIXME: faking offline
209 {0x10, ABORTED_COMMAND, 0x14, 0x00}, // ID not found Recorded entity not found
211 {0x08, NOT_READY, 0x04, 0x00}, // Media change FIXME: faking offline
213 {0x40, MEDIUM_ERROR, 0x11, 0x04}, // Uncorrectable ECC error Unrecovered read error
214 /* BBD - block marked bad */
215 {0x80, MEDIUM_ERROR, 0x11, 0x04}, // Block marked bad Medium error, unrecovered read error
216 {0xFF, 0xFF, 0xFF, 0xFF}, // END mark
218 static unsigned char stat_table[][4] = {
219 /* Must be first because BUSY means no other bits valid */
220 {0x80, ABORTED_COMMAND, 0x47, 0x00}, // Busy, fake parity for now
221 {0x20, HARDWARE_ERROR, 0x00, 0x00}, // Device fault
222 {0x08, ABORTED_COMMAND, 0x47, 0x00}, // Timed out in xfer, fake parity for now
223 {0x04, RECOVERED_ERROR, 0x11, 0x00}, // Recovered ECC error Medium error, recovered
224 {0xFF, 0xFF, 0xFF, 0xFF}, // END mark
228 cmd->result = SAM_STAT_CHECK_CONDITION;
231 * Is this an error we can process/parse
234 if(drv_stat & ATA_ERR)
235 /* Read the err bits */
236 err = ata_chk_err(qc->ap);
238 /* Display the ATA level error info */
240 printk(KERN_WARNING "ata%u: status=0x%02x { ", qc->ap->id, drv_stat);
244 err = 0; /* Data is not valid in this case */
247 if(drv_stat & 0x40) printk("DriveReady ");
248 if(drv_stat & 0x20) printk("DeviceFault ");
249 if(drv_stat & 0x10) printk("SeekComplete ");
250 if(drv_stat & 0x08) printk("DataRequest ");
251 if(drv_stat & 0x04) printk("CorrectedError ");
252 if(drv_stat & 0x02) printk("Index ");
253 if(drv_stat & 0x01) printk("Error ");
259 printk(KERN_WARNING "ata%u: error=0x%02x { ", qc->ap->id, err);
260 if(err & 0x04) printk("DriveStatusError ");
268 if(err & 0x40) printk("UncorrectableError ");
269 if(err & 0x10) printk("SectorIdNotFound ");
270 if(err & 0x02) printk("TrackZeroNotFound ");
271 if(err & 0x01) printk("AddrMarkNotFound ");
274 /* Should we dump sector info here too ?? */
279 while(sense_table[i][0] != 0xFF)
281 /* Look for best matches first */
282 if((sense_table[i][0] & err) == sense_table[i][0])
285 sb[2] = sense_table[i][1];
287 sb[12] = sense_table[i][2];
288 sb[13] = sense_table[i][3];
293 /* No immediate match */
295 printk(KERN_DEBUG "ata%u: no sense translation for 0x%02x\n", qc->ap->id, err);
298 /* Fall back to interpreting status bits */
299 while(stat_table[i][0] != 0xFF)
301 if(stat_table[i][0] & drv_stat)
304 sb[2] = stat_table[i][1];
306 sb[12] = stat_table[i][2];
307 sb[13] = stat_table[i][3];
313 printk(KERN_ERR "ata%u: called with no error (%02X)!\n", qc->ap->id, drv_stat);
314 /* additional-sense-code[-qualifier] */
317 sb[2] = MEDIUM_ERROR;
319 if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
320 sb[12] = 0x11; /* "unrecovered read error" */
323 sb[12] = 0x0C; /* "write error - */
324 sb[13] = 0x02; /* auto-reallocation failed" */
329 * ata_scsi_slave_config - Set SCSI device attributes
330 * @sdev: SCSI device to examine
332 * This is called before we actually start reading
333 * and writing to the device, to configure certain
334 * SCSI mid-layer behaviors.
337 * Defined by SCSI layer. We don't really care.
340 int ata_scsi_slave_config(struct scsi_device *sdev)
342 sdev->use_10_for_rw = 1;
343 sdev->use_10_for_ms = 1;
345 blk_queue_max_phys_segments(sdev->request_queue, LIBATA_MAX_PRD);
347 if (sdev->id < ATA_MAX_DEVICES) {
349 struct ata_device *dev;
351 ap = (struct ata_port *) &sdev->host->hostdata[0];
352 dev = &ap->device[sdev->id];
354 /* TODO: 1024 is an arbitrary number, not the
355 * hardware maximum. This should be increased to
356 * 65534 when Jens Axboe's patch for dynamically
357 * determining max_sectors is merged.
359 if ((dev->flags & ATA_DFLAG_LBA48) &&
360 ((dev->flags & ATA_DFLAG_LOCK_SECTORS) == 0)) {
362 * do not overwrite sdev->host->max_sectors, since
363 * other drives on this host may not support LBA48
365 blk_queue_max_sectors(sdev->request_queue, 2048);
369 return 0; /* scsi layer doesn't check return value, sigh */
373 * ata_scsi_error - SCSI layer error handler callback
374 * @host: SCSI host on which error occurred
376 * Handles SCSI-layer-thrown error events.
379 * Inherited from SCSI layer (none, can sleep)
385 int ata_scsi_error(struct Scsi_Host *host)
391 ap = (struct ata_port *) &host->hostdata[0];
392 ap->ops->eng_timeout(ap);
394 /* TODO: this is per-command; when queueing is supported
395 * this code will either change or move to a more
399 INIT_LIST_HEAD(&host->eh_cmd_q);
406 * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command
407 * @qc: Storage for translated ATA taskfile
408 * @scsicmd: SCSI command to translate
410 * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY
411 * (to start). Perhaps these commands should be preceded by
412 * CHECK POWER MODE to see what power mode the device is already in.
413 * [See SAT revision 5 at www.t10.org]
416 * spin_lock_irqsave(host_set lock)
419 * Zero on success, non-zero on error.
422 static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc,
425 struct ata_taskfile *tf = &qc->tf;
427 tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
428 tf->protocol = ATA_PROT_NODATA;
429 if (scsicmd[1] & 0x1) {
430 ; /* ignore IMMED bit, violates sat-r05 */
432 if (scsicmd[4] & 0x2)
433 return 1; /* LOEJ bit set not supported */
434 if (((scsicmd[4] >> 4) & 0xf) != 0)
435 return 1; /* power conditions not supported */
436 if (scsicmd[4] & 0x1) {
437 tf->nsect = 1; /* 1 sector, lba=0 */
441 tf->device |= ATA_LBA;
442 tf->command = ATA_CMD_VERIFY; /* READ VERIFY */
444 tf->nsect = 0; /* time period value (0 implies now) */
445 tf->command = ATA_CMD_STANDBY;
446 /* Consider: ATA STANDBY IMMEDIATE command */
449 * Standby and Idle condition timers could be implemented but that
450 * would require libata to implement the Power condition mode page
451 * and allow the user to change it. Changing mode pages requires
452 * MODE SELECT to be implemented.
460 * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command
461 * @qc: Storage for translated ATA taskfile
462 * @scsicmd: SCSI command to translate (ignored)
464 * Sets up an ATA taskfile to issue FLUSH CACHE or
468 * spin_lock_irqsave(host_set lock)
471 * Zero on success, non-zero on error.
474 static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc, u8 *scsicmd)
476 struct ata_taskfile *tf = &qc->tf;
478 tf->flags |= ATA_TFLAG_DEVICE;
479 tf->protocol = ATA_PROT_NODATA;
481 if ((tf->flags & ATA_TFLAG_LBA48) &&
482 (ata_id_has_flush_ext(qc->dev->id)))
483 tf->command = ATA_CMD_FLUSH_EXT;
485 tf->command = ATA_CMD_FLUSH;
491 * scsi_6_lba_len - Get LBA and transfer length
492 * @scsicmd: SCSI command to translate
494 * Calculate LBA and transfer length for 6-byte commands.
498 * @plen: the transfer length
501 static void scsi_6_lba_len(u8 *scsicmd, u64 *plba, u32 *plen)
506 VPRINTK("six-byte command\n");
508 lba |= ((u64)scsicmd[2]) << 8;
509 lba |= ((u64)scsicmd[3]);
511 len |= ((u32)scsicmd[4]);
518 * scsi_10_lba_len - Get LBA and transfer length
519 * @scsicmd: SCSI command to translate
521 * Calculate LBA and transfer length for 10-byte commands.
525 * @plen: the transfer length
528 static void scsi_10_lba_len(u8 *scsicmd, u64 *plba, u32 *plen)
533 VPRINTK("ten-byte command\n");
535 lba |= ((u64)scsicmd[2]) << 24;
536 lba |= ((u64)scsicmd[3]) << 16;
537 lba |= ((u64)scsicmd[4]) << 8;
538 lba |= ((u64)scsicmd[5]);
540 len |= ((u32)scsicmd[7]) << 8;
541 len |= ((u32)scsicmd[8]);
548 * scsi_16_lba_len - Get LBA and transfer length
549 * @scsicmd: SCSI command to translate
551 * Calculate LBA and transfer length for 16-byte commands.
555 * @plen: the transfer length
558 static void scsi_16_lba_len(u8 *scsicmd, u64 *plba, u32 *plen)
563 VPRINTK("sixteen-byte command\n");
565 lba |= ((u64)scsicmd[2]) << 56;
566 lba |= ((u64)scsicmd[3]) << 48;
567 lba |= ((u64)scsicmd[4]) << 40;
568 lba |= ((u64)scsicmd[5]) << 32;
569 lba |= ((u64)scsicmd[6]) << 24;
570 lba |= ((u64)scsicmd[7]) << 16;
571 lba |= ((u64)scsicmd[8]) << 8;
572 lba |= ((u64)scsicmd[9]);
574 len |= ((u32)scsicmd[10]) << 24;
575 len |= ((u32)scsicmd[11]) << 16;
576 len |= ((u32)scsicmd[12]) << 8;
577 len |= ((u32)scsicmd[13]);
584 * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one
585 * @qc: Storage for translated ATA taskfile
586 * @scsicmd: SCSI command to translate
588 * Converts SCSI VERIFY command to an ATA READ VERIFY command.
591 * spin_lock_irqsave(host_set lock)
594 * Zero on success, non-zero on error.
597 static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc, u8 *scsicmd)
599 struct ata_taskfile *tf = &qc->tf;
600 struct ata_device *dev = qc->dev;
601 unsigned int lba = tf->flags & ATA_TFLAG_LBA;
602 unsigned int lba48 = tf->flags & ATA_TFLAG_LBA48;
603 u64 dev_sectors = qc->dev->n_sectors;
607 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
608 tf->protocol = ATA_PROT_NODATA;
610 if (scsicmd[0] == VERIFY)
611 scsi_10_lba_len(scsicmd, &block, &n_block);
612 else if (scsicmd[0] == VERIFY_16)
613 scsi_16_lba_len(scsicmd, &block, &n_block);
619 if (block >= dev_sectors)
621 if ((block + n_block) > dev_sectors)
624 if (n_block > (64 * 1024))
633 tf->command = ATA_CMD_VERIFY_EXT;
635 tf->hob_nsect = (n_block >> 8) & 0xff;
637 tf->hob_lbah = (block >> 40) & 0xff;
638 tf->hob_lbam = (block >> 32) & 0xff;
639 tf->hob_lbal = (block >> 24) & 0xff;
641 tf->command = ATA_CMD_VERIFY;
643 tf->device |= (block >> 24) & 0xf;
646 tf->nsect = n_block & 0xff;
648 tf->lbah = (block >> 16) & 0xff;
649 tf->lbam = (block >> 8) & 0xff;
650 tf->lbal = block & 0xff;
652 tf->device |= ATA_LBA;
655 u32 sect, head, cyl, track;
657 /* Convert LBA to CHS */
658 track = (u32)block / dev->sectors;
659 cyl = track / dev->heads;
660 head = track % dev->heads;
661 sect = (u32)block % dev->sectors + 1;
663 DPRINTK("block %u track %u cyl %u head %u sect %u\n",
664 (u32)block, track, cyl, head, sect);
666 /* Check whether the converted CHS can fit.
670 if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
673 tf->command = ATA_CMD_VERIFY;
674 tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */
685 * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one
686 * @qc: Storage for translated ATA taskfile
687 * @scsicmd: SCSI command to translate
689 * Converts any of six SCSI read/write commands into the
690 * ATA counterpart, including starting sector (LBA),
691 * sector count, and taking into account the device's LBA48
694 * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and
695 * %WRITE_16 are currently supported.
698 * spin_lock_irqsave(host_set lock)
701 * Zero on success, non-zero on error.
704 static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, u8 *scsicmd)
706 struct ata_taskfile *tf = &qc->tf;
707 struct ata_device *dev = qc->dev;
708 unsigned int lba = tf->flags & ATA_TFLAG_LBA;
709 unsigned int lba48 = tf->flags & ATA_TFLAG_LBA48;
713 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
714 tf->protocol = qc->dev->xfer_protocol;
716 if (scsicmd[0] == READ_10 || scsicmd[0] == READ_6 ||
717 scsicmd[0] == READ_16) {
718 tf->command = qc->dev->read_cmd;
720 tf->command = qc->dev->write_cmd;
721 tf->flags |= ATA_TFLAG_WRITE;
724 /* Calculate the SCSI LBA and transfer length. */
725 switch (scsicmd[0]) {
728 scsi_10_lba_len(scsicmd, &block, &n_block);
732 scsi_6_lba_len(scsicmd, &block, &n_block);
734 /* for 6-byte r/w commands, transfer length 0
735 * means 256 blocks of data, not 0 block.
742 scsi_16_lba_len(scsicmd, &block, &n_block);
745 DPRINTK("no-byte command\n");
749 /* Check and compose ATA command */
751 /* For 10-byte and 16-byte SCSI R/W commands, transfer
752 * length 0 means transfer 0 block of data.
753 * However, for ATA R/W commands, sector count 0 means
754 * 256 or 65536 sectors, not 0 sectors as in SCSI.
760 /* The request -may- be too large for LBA48. */
761 if ((block >> 48) || (n_block > 65536))
764 tf->hob_nsect = (n_block >> 8) & 0xff;
766 tf->hob_lbah = (block >> 40) & 0xff;
767 tf->hob_lbam = (block >> 32) & 0xff;
768 tf->hob_lbal = (block >> 24) & 0xff;
772 /* The request -may- be too large for LBA28. */
773 if ((block >> 28) || (n_block > 256))
776 tf->device |= (block >> 24) & 0xf;
780 tf->nsect = n_block & 0xff;
782 tf->lbah = (block >> 16) & 0xff;
783 tf->lbam = (block >> 8) & 0xff;
784 tf->lbal = block & 0xff;
786 tf->device |= ATA_LBA;
789 u32 sect, head, cyl, track;
791 /* The request -may- be too large for CHS addressing. */
792 if ((block >> 28) || (n_block > 256))
795 /* Convert LBA to CHS */
796 track = (u32)block / dev->sectors;
797 cyl = track / dev->heads;
798 head = track % dev->heads;
799 sect = (u32)block % dev->sectors + 1;
801 DPRINTK("block %u track %u cyl %u head %u sect %u\n",
802 (u32)block, track, cyl, head, sect);
804 /* Check whether the converted CHS can fit.
808 if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
812 tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */
822 static int ata_scsi_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat)
824 struct scsi_cmnd *cmd = qc->scsicmd;
826 if (unlikely(drv_stat & (ATA_ERR | ATA_BUSY | ATA_DRQ)))
827 ata_to_sense_error(qc, drv_stat);
829 cmd->result = SAM_STAT_GOOD;
837 * ata_scsi_translate - Translate then issue SCSI command to ATA device
838 * @ap: ATA port to which the command is addressed
839 * @dev: ATA device to which the command is addressed
840 * @cmd: SCSI command to execute
841 * @done: SCSI command completion function
842 * @xlat_func: Actor which translates @cmd to an ATA taskfile
844 * Our ->queuecommand() function has decided that the SCSI
845 * command issued can be directly translated into an ATA
846 * command, rather than handled internally.
848 * This function sets up an ata_queued_cmd structure for the
849 * SCSI command, and sends that ata_queued_cmd to the hardware.
852 * spin_lock_irqsave(host_set lock)
855 static void ata_scsi_translate(struct ata_port *ap, struct ata_device *dev,
856 struct scsi_cmnd *cmd,
857 void (*done)(struct scsi_cmnd *),
858 ata_xlat_func_t xlat_func)
860 struct ata_queued_cmd *qc;
861 u8 *scsicmd = cmd->cmnd;
865 qc = ata_scsi_qc_new(ap, dev, cmd, done);
869 /* data is present; dma-map it */
870 if (cmd->sc_data_direction == DMA_FROM_DEVICE ||
871 cmd->sc_data_direction == DMA_TO_DEVICE) {
872 if (unlikely(cmd->request_bufflen < 1)) {
873 printk(KERN_WARNING "ata%u(%u): WARNING: zero len r/w req\n",
879 ata_sg_init(qc, cmd->request_buffer, cmd->use_sg);
881 ata_sg_init_one(qc, cmd->request_buffer,
882 cmd->request_bufflen);
884 qc->dma_dir = cmd->sc_data_direction;
887 qc->complete_fn = ata_scsi_qc_complete;
889 if (xlat_func(qc, scsicmd))
892 /* select device, send command to hardware */
893 if (ata_qc_issue(qc))
901 ata_bad_cdb(cmd, done);
902 DPRINTK("EXIT - badcmd\n");
906 * ata_scsi_rbuf_get - Map response buffer.
907 * @cmd: SCSI command containing buffer to be mapped.
908 * @buf_out: Pointer to mapped area.
910 * Maps buffer contained within SCSI command @cmd.
913 * spin_lock_irqsave(host_set lock)
916 * Length of response buffer.
919 static unsigned int ata_scsi_rbuf_get(struct scsi_cmnd *cmd, u8 **buf_out)
925 struct scatterlist *sg;
927 sg = (struct scatterlist *) cmd->request_buffer;
928 buf = kmap_atomic(sg->page, KM_USER0) + sg->offset;
931 buf = cmd->request_buffer;
932 buflen = cmd->request_bufflen;
940 * ata_scsi_rbuf_put - Unmap response buffer.
941 * @cmd: SCSI command containing buffer to be unmapped.
942 * @buf: buffer to unmap
944 * Unmaps response buffer contained within @cmd.
947 * spin_lock_irqsave(host_set lock)
950 static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, u8 *buf)
953 struct scatterlist *sg;
955 sg = (struct scatterlist *) cmd->request_buffer;
956 kunmap_atomic(buf - sg->offset, KM_USER0);
961 * ata_scsi_rbuf_fill - wrapper for SCSI command simulators
962 * @args: device IDENTIFY data / SCSI command of interest.
963 * @actor: Callback hook for desired SCSI command simulator
965 * Takes care of the hard work of simulating a SCSI command...
966 * Mapping the response buffer, calling the command's handler,
967 * and handling the handler's return value. This return value
968 * indicates whether the handler wishes the SCSI command to be
969 * completed successfully, or not.
972 * spin_lock_irqsave(host_set lock)
975 void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
976 unsigned int (*actor) (struct ata_scsi_args *args,
977 u8 *rbuf, unsigned int buflen))
980 unsigned int buflen, rc;
981 struct scsi_cmnd *cmd = args->cmd;
983 buflen = ata_scsi_rbuf_get(cmd, &rbuf);
984 memset(rbuf, 0, buflen);
985 rc = actor(args, rbuf, buflen);
986 ata_scsi_rbuf_put(cmd, rbuf);
989 ata_bad_cdb(cmd, args->done);
991 cmd->result = SAM_STAT_GOOD;
997 * ata_scsiop_inq_std - Simulate INQUIRY command
998 * @args: device IDENTIFY data / SCSI command of interest.
999 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1000 * @buflen: Response buffer length.
1002 * Returns standard device identification data associated
1003 * with non-EVPD INQUIRY command output.
1006 * spin_lock_irqsave(host_set lock)
1009 unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf,
1010 unsigned int buflen)
1015 0x5, /* claim SPC-3 version compatibility */
1020 /* set scsi removeable (RMB) bit per ata bit */
1021 if (ata_id_removeable(args->id))
1026 memcpy(rbuf, hdr, sizeof(hdr));
1029 memcpy(&rbuf[8], "ATA ", 8);
1030 ata_dev_id_string(args->id, &rbuf[16], ATA_ID_PROD_OFS, 16);
1031 ata_dev_id_string(args->id, &rbuf[32], ATA_ID_FW_REV_OFS, 4);
1032 if (rbuf[32] == 0 || rbuf[32] == ' ')
1033 memcpy(&rbuf[32], "n/a ", 4);
1037 const u8 versions[] = {
1038 0x60, /* SAM-3 (no version claimed) */
1041 0x20, /* SBC-2 (no version claimed) */
1044 0x60 /* SPC-3 (no version claimed) */
1047 memcpy(rbuf + 59, versions, sizeof(versions));
1054 * ata_scsiop_inq_00 - Simulate INQUIRY EVPD page 0, list of pages
1055 * @args: device IDENTIFY data / SCSI command of interest.
1056 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1057 * @buflen: Response buffer length.
1059 * Returns list of inquiry EVPD pages available.
1062 * spin_lock_irqsave(host_set lock)
1065 unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf,
1066 unsigned int buflen)
1068 const u8 pages[] = {
1069 0x00, /* page 0x00, this page */
1070 0x80, /* page 0x80, unit serial no page */
1071 0x83 /* page 0x83, device ident page */
1073 rbuf[3] = sizeof(pages); /* number of supported EVPD pages */
1076 memcpy(rbuf + 4, pages, sizeof(pages));
1082 * ata_scsiop_inq_80 - Simulate INQUIRY EVPD page 80, device serial number
1083 * @args: device IDENTIFY data / SCSI command of interest.
1084 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1085 * @buflen: Response buffer length.
1087 * Returns ATA device serial number.
1090 * spin_lock_irqsave(host_set lock)
1093 unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf,
1094 unsigned int buflen)
1098 0x80, /* this page code */
1100 ATA_SERNO_LEN, /* page len */
1102 memcpy(rbuf, hdr, sizeof(hdr));
1104 if (buflen > (ATA_SERNO_LEN + 4 - 1))
1105 ata_dev_id_string(args->id, (unsigned char *) &rbuf[4],
1106 ATA_ID_SERNO_OFS, ATA_SERNO_LEN);
1111 static const char *inq_83_str = "Linux ATA-SCSI simulator";
1114 * ata_scsiop_inq_83 - Simulate INQUIRY EVPD page 83, device identity
1115 * @args: device IDENTIFY data / SCSI command of interest.
1116 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1117 * @buflen: Response buffer length.
1119 * Returns device identification. Currently hardcoded to
1120 * return "Linux ATA-SCSI simulator".
1123 * spin_lock_irqsave(host_set lock)
1126 unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf,
1127 unsigned int buflen)
1129 rbuf[1] = 0x83; /* this page code */
1130 rbuf[3] = 4 + strlen(inq_83_str); /* page len */
1132 /* our one and only identification descriptor (vendor-specific) */
1133 if (buflen > (strlen(inq_83_str) + 4 + 4 - 1)) {
1134 rbuf[4 + 0] = 2; /* code set: ASCII */
1135 rbuf[4 + 3] = strlen(inq_83_str);
1136 memcpy(rbuf + 4 + 4, inq_83_str, strlen(inq_83_str));
1143 * ata_scsiop_noop - Command handler that simply returns success.
1144 * @args: device IDENTIFY data / SCSI command of interest.
1145 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1146 * @buflen: Response buffer length.
1148 * No operation. Simply returns success to caller, to indicate
1149 * that the caller should successfully complete this SCSI command.
1152 * spin_lock_irqsave(host_set lock)
1155 unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf,
1156 unsigned int buflen)
1163 * ata_msense_push - Push data onto MODE SENSE data output buffer
1164 * @ptr_io: (input/output) Location to store more output data
1165 * @last: End of output data buffer
1166 * @buf: Pointer to BLOB being added to output buffer
1167 * @buflen: Length of BLOB
1169 * Store MODE SENSE data on an output buffer.
1175 static void ata_msense_push(u8 **ptr_io, const u8 *last,
1176 const u8 *buf, unsigned int buflen)
1180 if ((ptr + buflen - 1) > last)
1183 memcpy(ptr, buf, buflen);
1191 * ata_msense_caching - Simulate MODE SENSE caching info page
1192 * @id: device IDENTIFY data
1193 * @ptr_io: (input/output) Location to store more output data
1194 * @last: End of output data buffer
1196 * Generate a caching info page, which conditionally indicates
1197 * write caching to the SCSI layer, depending on device
1204 static unsigned int ata_msense_caching(u16 *id, u8 **ptr_io,
1208 0x8, /* page code */
1209 0x12, /* page length */
1210 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 10 zeroes */
1211 0, 0, 0, 0, 0, 0, 0, 0 /* 8 zeroes */
1214 if (ata_id_wcache_enabled(id))
1215 page[2] |= (1 << 2); /* write cache enable */
1216 if (!ata_id_rahead_enabled(id))
1217 page[12] |= (1 << 5); /* disable read ahead */
1219 ata_msense_push(ptr_io, last, page, sizeof(page));
1220 return sizeof(page);
1224 * ata_msense_ctl_mode - Simulate MODE SENSE control mode page
1225 * @dev: Device associated with this MODE SENSE command
1226 * @ptr_io: (input/output) Location to store more output data
1227 * @last: End of output data buffer
1229 * Generate a generic MODE SENSE control mode page.
1235 static unsigned int ata_msense_ctl_mode(u8 **ptr_io, const u8 *last)
1237 const u8 page[] = {0xa, 0xa, 6, 0, 0, 0, 0, 0, 0xff, 0xff, 0, 30};
1239 /* byte 2: set the descriptor format sense data bit (bit 2)
1240 * since we need to support returning this format for SAT
1241 * commands and any SCSI commands against a 48b LBA device.
1244 ata_msense_push(ptr_io, last, page, sizeof(page));
1245 return sizeof(page);
1249 * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page
1250 * @dev: Device associated with this MODE SENSE command
1251 * @ptr_io: (input/output) Location to store more output data
1252 * @last: End of output data buffer
1254 * Generate a generic MODE SENSE r/w error recovery page.
1260 static unsigned int ata_msense_rw_recovery(u8 **ptr_io, const u8 *last)
1263 0x1, /* page code */
1264 0xa, /* page length */
1265 (1 << 7) | (1 << 6), /* note auto r/w reallocation */
1266 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 9 zeroes */
1269 ata_msense_push(ptr_io, last, page, sizeof(page));
1270 return sizeof(page);
1274 * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands
1275 * @args: device IDENTIFY data / SCSI command of interest.
1276 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1277 * @buflen: Response buffer length.
1279 * Simulate MODE SENSE commands.
1282 * spin_lock_irqsave(host_set lock)
1285 unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
1286 unsigned int buflen)
1288 u8 *scsicmd = args->cmd->cmnd, *p, *last;
1289 unsigned int page_control, six_byte, output_len;
1293 six_byte = (scsicmd[0] == MODE_SENSE);
1295 /* we only support saved and current values (which we treat
1296 * in the same manner)
1298 page_control = scsicmd[2] >> 6;
1299 if ((page_control != 0) && (page_control != 3))
1307 p = rbuf + output_len;
1308 last = rbuf + buflen - 1;
1310 switch(scsicmd[2] & 0x3f) {
1311 case 0x01: /* r/w error recovery */
1312 output_len += ata_msense_rw_recovery(&p, last);
1315 case 0x08: /* caching */
1316 output_len += ata_msense_caching(args->id, &p, last);
1319 case 0x0a: { /* control mode */
1320 output_len += ata_msense_ctl_mode(&p, last);
1324 case 0x3f: /* all pages */
1325 output_len += ata_msense_rw_recovery(&p, last);
1326 output_len += ata_msense_caching(args->id, &p, last);
1327 output_len += ata_msense_ctl_mode(&p, last);
1330 default: /* invalid page code */
1336 rbuf[0] = output_len;
1339 rbuf[0] = output_len >> 8;
1340 rbuf[1] = output_len;
1347 * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands
1348 * @args: device IDENTIFY data / SCSI command of interest.
1349 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1350 * @buflen: Response buffer length.
1352 * Simulate READ CAPACITY commands.
1355 * spin_lock_irqsave(host_set lock)
1358 unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf,
1359 unsigned int buflen)
1366 if (ata_id_has_lba(args->id)) {
1367 if (ata_id_has_lba48(args->id))
1368 n_sectors = ata_id_u64(args->id, 100);
1370 n_sectors = ata_id_u32(args->id, 60);
1372 /* CHS default translation */
1373 n_sectors = args->id[1] * args->id[3] * args->id[6];
1375 if (ata_id_current_chs_valid(args->id))
1376 /* CHS current translation */
1377 n_sectors = ata_id_u32(args->id, 57);
1380 n_sectors--; /* ATA TotalUserSectors - 1 */
1382 if (args->cmd->cmnd[0] == READ_CAPACITY) {
1383 if( n_sectors >= 0xffffffffULL )
1384 tmp = 0xffffffff ; /* Return max count on overflow */
1388 /* sector count, 32-bit */
1389 rbuf[0] = tmp >> (8 * 3);
1390 rbuf[1] = tmp >> (8 * 2);
1391 rbuf[2] = tmp >> (8 * 1);
1395 tmp = ATA_SECT_SIZE;
1400 /* sector count, 64-bit */
1401 tmp = n_sectors >> (8 * 4);
1402 rbuf[2] = tmp >> (8 * 3);
1403 rbuf[3] = tmp >> (8 * 2);
1404 rbuf[4] = tmp >> (8 * 1);
1407 rbuf[6] = tmp >> (8 * 3);
1408 rbuf[7] = tmp >> (8 * 2);
1409 rbuf[8] = tmp >> (8 * 1);
1413 tmp = ATA_SECT_SIZE;
1414 rbuf[12] = tmp >> 8;
1422 * ata_scsiop_report_luns - Simulate REPORT LUNS command
1423 * @args: device IDENTIFY data / SCSI command of interest.
1424 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
1425 * @buflen: Response buffer length.
1427 * Simulate REPORT LUNS command.
1430 * spin_lock_irqsave(host_set lock)
1433 unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf,
1434 unsigned int buflen)
1437 rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */
1443 * ata_scsi_badcmd - End a SCSI request with an error
1444 * @cmd: SCSI request to be handled
1445 * @done: SCSI command completion function
1446 * @asc: SCSI-defined additional sense code
1447 * @ascq: SCSI-defined additional sense code qualifier
1449 * Helper function that completes a SCSI command with
1450 * %SAM_STAT_CHECK_CONDITION, with a sense key %ILLEGAL_REQUEST
1451 * and the specified additional sense codes.
1454 * spin_lock_irqsave(host_set lock)
1457 void ata_scsi_badcmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), u8 asc, u8 ascq)
1460 cmd->result = SAM_STAT_CHECK_CONDITION;
1462 cmd->sense_buffer[0] = 0x70;
1463 cmd->sense_buffer[2] = ILLEGAL_REQUEST;
1464 cmd->sense_buffer[7] = 14 - 8; /* addnl. sense len. FIXME: correct? */
1465 cmd->sense_buffer[12] = asc;
1466 cmd->sense_buffer[13] = ascq;
1471 static int atapi_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat)
1473 struct scsi_cmnd *cmd = qc->scsicmd;
1475 if (unlikely(drv_stat & (ATA_ERR | ATA_BUSY | ATA_DRQ))) {
1476 DPRINTK("request check condition\n");
1478 cmd->result = SAM_STAT_CHECK_CONDITION;
1484 u8 *scsicmd = cmd->cmnd;
1486 if (scsicmd[0] == INQUIRY) {
1488 unsigned int buflen;
1490 buflen = ata_scsi_rbuf_get(cmd, &buf);
1492 buf[3] = (buf[3] & 0xf0) | 2;
1493 ata_scsi_rbuf_put(cmd, buf);
1495 cmd->result = SAM_STAT_GOOD;
1503 * atapi_xlat - Initialize PACKET taskfile
1504 * @qc: command structure to be initialized
1505 * @scsicmd: SCSI CDB associated with this PACKET command
1508 * spin_lock_irqsave(host_set lock)
1511 * Zero on success, non-zero on failure.
1514 static unsigned int atapi_xlat(struct ata_queued_cmd *qc, u8 *scsicmd)
1516 struct scsi_cmnd *cmd = qc->scsicmd;
1517 struct ata_device *dev = qc->dev;
1518 int using_pio = (dev->flags & ATA_DFLAG_PIO);
1519 int nodata = (cmd->sc_data_direction == DMA_NONE);
1522 /* Check whether ATAPI DMA is safe */
1523 if (ata_check_atapi_dma(qc))
1526 memcpy(&qc->cdb, scsicmd, qc->ap->cdb_len);
1528 qc->complete_fn = atapi_qc_complete;
1530 qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
1531 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
1532 qc->tf.flags |= ATA_TFLAG_WRITE;
1533 DPRINTK("direction: write\n");
1536 qc->tf.command = ATA_CMD_PACKET;
1538 /* no data, or PIO data xfer */
1539 if (using_pio || nodata) {
1541 qc->tf.protocol = ATA_PROT_ATAPI_NODATA;
1543 qc->tf.protocol = ATA_PROT_ATAPI;
1544 qc->tf.lbam = (8 * 1024) & 0xff;
1545 qc->tf.lbah = (8 * 1024) >> 8;
1550 qc->tf.protocol = ATA_PROT_ATAPI_DMA;
1551 qc->tf.feature |= ATAPI_PKT_DMA;
1553 #ifdef ATAPI_ENABLE_DMADIR
1554 /* some SATA bridges need us to indicate data xfer direction */
1555 if (cmd->sc_data_direction != DMA_TO_DEVICE)
1556 qc->tf.feature |= ATAPI_DMADIR;
1560 qc->nbytes = cmd->bufflen;
1566 * ata_scsi_find_dev - lookup ata_device from scsi_cmnd
1567 * @ap: ATA port to which the device is attached
1568 * @scsidev: SCSI device from which we derive the ATA device
1570 * Given various information provided in struct scsi_cmnd,
1571 * map that onto an ATA bus, and using that mapping
1572 * determine which ata_device is associated with the
1573 * SCSI command to be sent.
1576 * spin_lock_irqsave(host_set lock)
1579 * Associated ATA device, or %NULL if not found.
1582 static struct ata_device *
1583 ata_scsi_find_dev(struct ata_port *ap, struct scsi_device *scsidev)
1585 struct ata_device *dev;
1587 /* skip commands not addressed to targets we simulate */
1588 if (likely(scsidev->id < ATA_MAX_DEVICES))
1589 dev = &ap->device[scsidev->id];
1593 if (unlikely((scsidev->channel != 0) ||
1594 (scsidev->lun != 0)))
1597 if (unlikely(!ata_dev_present(dev)))
1600 if (!atapi_enabled) {
1601 if (unlikely(dev->class == ATA_DEV_ATAPI))
1609 * ata_get_xlat_func - check if SCSI to ATA translation is possible
1611 * @cmd: SCSI command opcode to consider
1613 * Look up the SCSI command given, and determine whether the
1614 * SCSI command is to be translated or simulated.
1617 * Pointer to translation function if possible, %NULL if not.
1620 static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
1630 return ata_scsi_rw_xlat;
1632 case SYNCHRONIZE_CACHE:
1633 if (ata_try_flush_cache(dev))
1634 return ata_scsi_flush_xlat;
1639 return ata_scsi_verify_xlat;
1641 return ata_scsi_start_stop_xlat;
1648 * ata_scsi_dump_cdb - dump SCSI command contents to dmesg
1649 * @ap: ATA port to which the command was being sent
1650 * @cmd: SCSI command to dump
1652 * Prints the contents of a SCSI command via printk().
1655 static inline void ata_scsi_dump_cdb(struct ata_port *ap,
1656 struct scsi_cmnd *cmd)
1659 struct scsi_device *scsidev = cmd->device;
1660 u8 *scsicmd = cmd->cmnd;
1662 DPRINTK("CDB (%u:%d,%d,%d) %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1664 scsidev->channel, scsidev->id, scsidev->lun,
1665 scsicmd[0], scsicmd[1], scsicmd[2], scsicmd[3],
1666 scsicmd[4], scsicmd[5], scsicmd[6], scsicmd[7],
1672 * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device
1673 * @cmd: SCSI command to be sent
1674 * @done: Completion function, called when command is complete
1676 * In some cases, this function translates SCSI commands into
1677 * ATA taskfiles, and queues the taskfiles to be sent to
1678 * hardware. In other cases, this function simulates a
1679 * SCSI device by evaluating and responding to certain
1680 * SCSI commands. This creates the overall effect of
1681 * ATA and ATAPI devices appearing as SCSI devices.
1684 * Releases scsi-layer-held lock, and obtains host_set lock.
1690 int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
1692 struct ata_port *ap;
1693 struct ata_device *dev;
1694 struct scsi_device *scsidev = cmd->device;
1696 ap = (struct ata_port *) &scsidev->host->hostdata[0];
1698 ata_scsi_dump_cdb(ap, cmd);
1700 dev = ata_scsi_find_dev(ap, scsidev);
1701 if (unlikely(!dev)) {
1702 cmd->result = (DID_BAD_TARGET << 16);
1707 if (dev->class == ATA_DEV_ATA) {
1708 ata_xlat_func_t xlat_func = ata_get_xlat_func(dev,
1712 ata_scsi_translate(ap, dev, cmd, done, xlat_func);
1714 ata_scsi_simulate(dev->id, cmd, done);
1716 ata_scsi_translate(ap, dev, cmd, done, atapi_xlat);
1723 * ata_scsi_simulate - simulate SCSI command on ATA device
1724 * @id: current IDENTIFY data for target device.
1725 * @cmd: SCSI command being sent to device.
1726 * @done: SCSI command completion function.
1728 * Interprets and directly executes a select list of SCSI commands
1729 * that can be handled internally.
1732 * spin_lock_irqsave(host_set lock)
1735 void ata_scsi_simulate(u16 *id,
1736 struct scsi_cmnd *cmd,
1737 void (*done)(struct scsi_cmnd *))
1739 struct ata_scsi_args args;
1740 u8 *scsicmd = cmd->cmnd;
1746 switch(scsicmd[0]) {
1747 /* no-op's, complete with success */
1748 case SYNCHRONIZE_CACHE:
1752 case TEST_UNIT_READY:
1753 case FORMAT_UNIT: /* FIXME: correct? */
1754 case SEND_DIAGNOSTIC: /* FIXME: correct? */
1755 ata_scsi_rbuf_fill(&args, ata_scsiop_noop);
1759 if (scsicmd[1] & 2) /* is CmdDt set? */
1760 ata_bad_cdb(cmd, done);
1761 else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */
1762 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std);
1763 else if (scsicmd[2] == 0x00)
1764 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00);
1765 else if (scsicmd[2] == 0x80)
1766 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80);
1767 else if (scsicmd[2] == 0x83)
1768 ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83);
1770 ata_bad_cdb(cmd, done);
1775 ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense);
1778 case MODE_SELECT: /* unconditionally return */
1779 case MODE_SELECT_10: /* bad-field-in-cdb */
1780 ata_bad_cdb(cmd, done);
1784 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
1787 case SERVICE_ACTION_IN:
1788 if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16)
1789 ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
1791 ata_bad_cdb(cmd, done);
1795 ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns);
1798 /* mandantory commands we haven't implemented yet */
1801 /* all other commands */
1803 ata_bad_scsiop(cmd, done);