[linux-2.6-block.git] / drivers / ide / ide-cd_ioctl.c

// SPDX-License-Identifier: GPL-2.0
/*
 * cdrom.c IOCTLs handling for ide-cd driver.
 *
 * Copyright (C) 1994-1996  Scott Snyder <snyder@fnald0.fnal.gov>
 * Copyright (C) 1996-1998  Erik Andersen <andersee@debian.org>
 * Copyright (C) 1998-2000  Jens Axboe <axboe@suse.de>
 */

#include <linux/kernel.h>
#include <linux/cdrom.h>
#include <linux/gfp.h>
#include <linux/ide.h>
#include <scsi/scsi.h>

#include "ide-cd.h"

/****************************************************************************
 * Other driver requests (open, close, check media change).
 */
int ide_cdrom_open_real(struct cdrom_device_info *cdi, int purpose)
{
	return 0;
}

/*
 * Close down the device.  Invalidate all cached blocks.
 */
void ide_cdrom_release_real(struct cdrom_device_info *cdi)
{
	ide_drive_t *drive = cdi->handle;

	if (!cdi->use_count)
		drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
}

/*
 * add logic to try GET_EVENT command first to check for media and tray
 * status. this should be supported by newer cd-r/w and all DVD etc
 * drives
 */
int ide_cdrom_drive_status(struct cdrom_device_info *cdi, int slot_nr)
{
	ide_drive_t *drive = cdi->handle;
	struct media_event_desc med;
	struct scsi_sense_hdr sshdr;
	int stat;

	if (slot_nr != CDSL_CURRENT)
		return -EINVAL;

	stat = cdrom_check_status(drive, &sshdr);
	if (!stat || sshdr.sense_key == UNIT_ATTENTION)
		return CDS_DISC_OK;

	if (!cdrom_get_media_event(cdi, &med)) {
		if (med.media_present)
			return CDS_DISC_OK;
		else if (med.door_open)
			return CDS_TRAY_OPEN;
		else
			return CDS_NO_DISC;
	}

	if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04
			&& sshdr.ascq == 0x04)
		return CDS_DISC_OK;

	/*
	 * If not using Mt Fuji extended media tray reports,
	 * just return TRAY_OPEN since ATAPI doesn't provide
	 * any other way to detect this...
	 */
	if (sshdr.sense_key == NOT_READY) {
		if (sshdr.asc == 0x3a && sshdr.ascq == 1)
			return CDS_NO_DISC;
		else
			return CDS_TRAY_OPEN;
	}
	return CDS_DRIVE_NOT_READY;
}

/*
 * ide-cd always generates media changed event if media is missing, which
 * makes it impossible to use for proper event reporting, so disk->events
 * is cleared to 0 and the following function is used only to trigger
 * revalidation and never propagated to userland.
 */
unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *cdi,
					 unsigned int clearing, int slot_nr)
{
	ide_drive_t *drive = cdi->handle;
	int retval;

	if (slot_nr == CDSL_CURRENT) {
		(void) cdrom_check_status(drive, NULL);
		retval = (drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED) ? 1 : 0;
		drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
		return retval ? DISK_EVENT_MEDIA_CHANGE : 0;
	} else {
		return 0;
	}
}

/* Eject the disk if EJECTFLAG is 0.
   If EJECTFLAG is 1, try to reload the disk. */
static
int cdrom_eject(ide_drive_t *drive, int ejectflag)
{
	struct cdrom_info *cd = drive->driver_data;
	struct cdrom_device_info *cdi = &cd->devinfo;
	char loej = 0x02;
	unsigned char cmd[BLK_MAX_CDB];

	if ((drive->atapi_flags & IDE_AFLAG_NO_EJECT) && !ejectflag)
		return -EDRIVE_CANT_DO_THIS;

	/* reload fails on some drives, if the tray is locked */
	if ((drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) && ejectflag)
		return 0;

	/* only tell drive to close tray if open, if it can do that */
	if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY))
		loej = 0;

	memset(cmd, 0, BLK_MAX_CDB);

	cmd[0] = GPCMD_START_STOP_UNIT;
	cmd[4] = loej | (ejectflag != 0);

	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, NULL, 0, 0);
}

/* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
static
int ide_cd_lockdoor(ide_drive_t *drive, int lockflag)
{
	struct scsi_sense_hdr sshdr;
	int stat;

	/* If the drive cannot lock the door, just pretend. */
	if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) {
		stat = 0;
	} else {
		unsigned char cmd[BLK_MAX_CDB];

		memset(cmd, 0, BLK_MAX_CDB);

		cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
		cmd[4] = lockflag ? 1 : 0;

		stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL,
				       &sshdr, 0, 0);
	}

	/* If we got an illegal field error, the drive
	   probably cannot lock the door. */
	if (stat != 0 &&
	    sshdr.sense_key == ILLEGAL_REQUEST &&
	    (sshdr.asc == 0x24 || sshdr.asc == 0x20)) {
		printk(KERN_ERR "%s: door locking not supported\n",
			drive->name);
		drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
		stat = 0;
	}

	/* no medium, that's alright. */
	if (stat != 0 && sshdr.sense_key == NOT_READY && sshdr.asc == 0x3a)
		stat = 0;

	if (stat == 0) {
		if (lockflag)
			drive->atapi_flags |= IDE_AFLAG_DOOR_LOCKED;
		else
			drive->atapi_flags &= ~IDE_AFLAG_DOOR_LOCKED;
	}

	return stat;
}

int ide_cdrom_tray_move(struct cdrom_device_info *cdi, int position)
{
	ide_drive_t *drive = cdi->handle;

	if (position) {
		int stat = ide_cd_lockdoor(drive, 0);

		if (stat)
			return stat;
	}

	return cdrom_eject(drive, !position);
}

int ide_cdrom_lock_door(struct cdrom_device_info *cdi, int lock)
{
	ide_drive_t *drive = cdi->handle;

	return ide_cd_lockdoor(drive, lock);
}

/*
 * ATAPI devices are free to select the speed you request or any slower
 * rate. :-(  Requesting too fast a speed will _not_ produce an error.
 */
int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed)
{
	ide_drive_t *drive = cdi->handle;
	struct cdrom_info *cd = drive->driver_data;
	u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
	int stat;
	unsigned char cmd[BLK_MAX_CDB];

	if (speed == 0)
		speed = 0xffff; /* set to max */
	else
		speed *= 177;   /* Nx to kbytes/s */

	memset(cmd, 0, BLK_MAX_CDB);

	cmd[0] = GPCMD_SET_SPEED;
	/* Read Drive speed in kbytes/second MSB/LSB */
	cmd[2] = (speed >> 8) & 0xff;
	cmd[3] = speed & 0xff;
	if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) !=
	    (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) {
		/* Write Drive speed in kbytes/second MSB/LSB */
		cmd[4] = (speed >> 8) & 0xff;
		cmd[5] = speed & 0xff;
	}

	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, NULL, 0, 0);

	if (!ide_cdrom_get_capabilities(drive, buf)) {
		ide_cdrom_update_speed(drive, buf);
		cdi->speed = cd->current_speed;
	}

	return 0;
}

int ide_cdrom_get_last_session(struct cdrom_device_info *cdi,
			       struct cdrom_multisession *ms_info)
{
	struct atapi_toc *toc;
	ide_drive_t *drive = cdi->handle;
	struct cdrom_info *info = drive->driver_data;
	int ret;

	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0 || !info->toc) {
		ret = ide_cd_read_toc(drive);
		if (ret)
			return ret;
	}

	toc = info->toc;
	ms_info->addr.lba = toc->last_session_lba;
	ms_info->xa_flag = toc->xa_flag;

	return 0;
}

int ide_cdrom_get_mcn(struct cdrom_device_info *cdi,
		      struct cdrom_mcn *mcn_info)
{
	ide_drive_t *drive = cdi->handle;
	int stat, mcnlen;
	char buf[24];
	unsigned char cmd[BLK_MAX_CDB];
	unsigned len = sizeof(buf);

	memset(cmd, 0, BLK_MAX_CDB);

	cmd[0] = GPCMD_READ_SUBCHANNEL;
	cmd[1] = 2;		/* MSF addressing */
	cmd[2] = 0x40;	/* request subQ data */
	cmd[3] = 2;		/* format */
	cmd[8] = len;

	stat = ide_cd_queue_pc(drive, cmd, 0, buf, &len, NULL, 0, 0);
	if (stat)
		return stat;

	mcnlen = sizeof(mcn_info->medium_catalog_number) - 1;
	memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen);
	mcn_info->medium_catalog_number[mcnlen] = '\0';

	return 0;
}

int ide_cdrom_reset(struct cdrom_device_info *cdi)
{
	ide_drive_t *drive = cdi->handle;
	struct cdrom_info *cd = drive->driver_data;
	struct request *rq;
	int ret;

	rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, 0);
	ide_req(rq)->type = ATA_PRIV_MISC;
	rq->rq_flags = RQF_QUIET;
	blk_execute_rq(drive->queue, cd->disk, rq, 0);
	ret = scsi_req(rq)->result ? -EIO : 0;
	blk_put_request(rq);
	/*
	 * A reset will unlock the door. If it was previously locked,
	 * lock it again.
	 */
	if (drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED)
		(void)ide_cd_lockdoor(drive, 1);

	return ret;
}

static int ide_cd_get_toc_entry(ide_drive_t *drive, int track,
				struct atapi_toc_entry **ent)
{
	struct cdrom_info *info = drive->driver_data;
	struct atapi_toc *toc = info->toc;
	int ntracks;

	/*
	 * don't serve cached data, if the toc isn't valid
	 */
	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0)
		return -EINVAL;

	/* Check validity of requested track number. */
	ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;

	if (toc->hdr.first_track == CDROM_LEADOUT)
		ntracks = 0;

	if (track == CDROM_LEADOUT)
		*ent = &toc->ent[ntracks];
	else if (track < toc->hdr.first_track || track > toc->hdr.last_track)
		return -EINVAL;
	else
		*ent = &toc->ent[track - toc->hdr.first_track];

	return 0;
}

static int ide_cd_fake_play_trkind(ide_drive_t *drive, void *arg)
{
	struct cdrom_ti *ti = arg;
	struct atapi_toc_entry *first_toc, *last_toc;
	unsigned long lba_start, lba_end;
	int stat;
	unsigned char cmd[BLK_MAX_CDB];

	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc);
	if (stat)
		return stat;

	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc);
	if (stat)
		return stat;

	if (ti->cdti_trk1 != CDROM_LEADOUT)
		++last_toc;
	lba_start = first_toc->addr.lba;
	lba_end   = last_toc->addr.lba;

	if (lba_end <= lba_start)
		return -EINVAL;

	memset(cmd, 0, BLK_MAX_CDB);

	cmd[0] = GPCMD_PLAY_AUDIO_MSF;
	lba_to_msf(lba_start,   &cmd[3], &cmd[4], &cmd[5]);
	lba_to_msf(lba_end - 1, &cmd[6], &cmd[7], &cmd[8]);

	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, NULL, 0, 0);
}

static int ide_cd_read_tochdr(ide_drive_t *drive, void *arg)
{
	struct cdrom_info *cd = drive->driver_data;
	struct cdrom_tochdr *tochdr = arg;
	struct atapi_toc *toc;
	int stat;

	/* Make sure our saved TOC is valid. */
	stat = ide_cd_read_toc(drive);
	if (stat)
		return stat;

	toc = cd->toc;
	tochdr->cdth_trk0 = toc->hdr.first_track;
	tochdr->cdth_trk1 = toc->hdr.last_track;

	return 0;
}

static int ide_cd_read_tocentry(ide_drive_t *drive, void *arg)
{
	struct cdrom_tocentry *tocentry = arg;
	struct atapi_toc_entry *toce;
	int stat;

	stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce);
	if (stat)
		return stat;

	tocentry->cdte_ctrl = toce->control;
	tocentry->cdte_adr  = toce->adr;
	if (tocentry->cdte_format == CDROM_MSF) {
		lba_to_msf(toce->addr.lba,
			   &tocentry->cdte_addr.msf.minute,
			   &tocentry->cdte_addr.msf.second,
			   &tocentry->cdte_addr.msf.frame);
	} else
		tocentry->cdte_addr.lba = toce->addr.lba;

	return 0;
}

int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi,
			  unsigned int cmd, void *arg)
{
	ide_drive_t *drive = cdi->handle;

	switch (cmd) {
	/*
	 * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since
	 * atapi doesn't support it
	 */
	case CDROMPLAYTRKIND:
		return ide_cd_fake_play_trkind(drive, arg);
	case CDROMREADTOCHDR:
		return ide_cd_read_tochdr(drive, arg);
	case CDROMREADTOCENTRY:
		return ide_cd_read_tocentry(drive, arg);
	default:
		return -EINVAL;
	}
}

/* the generic packet interface to cdrom.c */
int ide_cdrom_packet(struct cdrom_device_info *cdi,
			    struct packet_command *cgc)
{
	ide_drive_t *drive = cdi->handle;
	req_flags_t flags = 0;
	unsigned len = cgc->buflen;

	if (cgc->timeout <= 0)
		cgc->timeout = ATAPI_WAIT_PC;

	/* here we queue the commands from the uniform CD-ROM
	   layer. the packet must be complete, as we do not
	   touch it at all. */

	if (cgc->sshdr)
		memset(cgc->sshdr, 0, sizeof(*cgc->sshdr));

	if (cgc->quiet)
		flags |= RQF_QUIET;

	cgc->stat = ide_cd_queue_pc(drive, cgc->cmd,
				    cgc->data_direction == CGC_DATA_WRITE,
				    cgc->buffer, &len,
				    cgc->sshdr, cgc->timeout, flags);
	if (!cgc->stat)
		cgc->buflen -= len;
	return cgc->stat;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
17802998 BZ	2	/*
	3	* cdrom.c IOCTLs handling for ide-cd driver.
	4	*
	5	* Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov>
	6	* Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
	7	* Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de>
	8	*/
	9
	10	#include <linux/kernel.h>
	11	#include <linux/cdrom.h>
5a0e3ad6	12	#include <linux/gfp.h>
17802998	13	#include <linux/ide.h>
f9afd18b	14	#include <scsi/scsi.h>
17802998 BZ	15
	16	#include "ide-cd.h"
	17
f9afd18b BP	18	/****************************************************************************
	19	* Other driver requests (open, close, check media change).
	20	*/
	21	int ide_cdrom_open_real(struct cdrom_device_info *cdi, int purpose)
	22	{
	23	return 0;
	24	}
	25
	26	/*
	27	* Close down the device. Invalidate all cached blocks.
	28	*/
	29	void ide_cdrom_release_real(struct cdrom_device_info *cdi)
	30	{
	31	ide_drive_t *drive = cdi->handle;
f9afd18b BP	32
f9afd18b BP	33	if (!cdi->use_count)
570f89ea	34	drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
f9afd18b BP	35	}
	36
	37	/*
	38	* add logic to try GET_EVENT command first to check for media and tray
	39	* status. this should be supported by newer cd-r/w and all DVD etc
	40	* drives
	41	*/
	42	int ide_cdrom_drive_status(struct cdrom_device_info *cdi, int slot_nr)
	43	{
	44	ide_drive_t *drive = cdi->handle;
	45	struct media_event_desc med;
e7d0748d	46	struct scsi_sense_hdr sshdr;
f9afd18b BP	47	int stat;
	48
	49	if (slot_nr != CDSL_CURRENT)
	50	return -EINVAL;
	51
e7d0748d KC	52	stat = cdrom_check_status(drive, &sshdr);
e7d0748d KC	53	if (!stat \|\| sshdr.sense_key == UNIT_ATTENTION)
f9afd18b BP	54	return CDS_DISC_OK;
	55
	56	if (!cdrom_get_media_event(cdi, &med)) {
	57	if (med.media_present)
	58	return CDS_DISC_OK;
	59	else if (med.door_open)
	60	return CDS_TRAY_OPEN;
	61	else
	62	return CDS_NO_DISC;
	63	}
	64
e7d0748d KC	65	if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04
e7d0748d KC	66	&& sshdr.ascq == 0x04)
f9afd18b BP	67	return CDS_DISC_OK;
	68
	69	/*
	70	* If not using Mt Fuji extended media tray reports,
	71	* just return TRAY_OPEN since ATAPI doesn't provide
	72	* any other way to detect this...
	73	*/
e7d0748d KC	74	if (sshdr.sense_key == NOT_READY) {
e7d0748d KC	75	if (sshdr.asc == 0x3a && sshdr.ascq == 1)
f9afd18b BP	76	return CDS_NO_DISC;
	77	else
	78	return CDS_TRAY_OPEN;
	79	}
	80	return CDS_DRIVE_NOT_READY;
	81	}
	82
7eec77a1 TH	83	/*
	84	* ide-cd always generates media changed event if media is missing, which
	85	* makes it impossible to use for proper event reporting, so disk->events
	86	* is cleared to 0 and the following function is used only to trigger
	87	* revalidation and never propagated to userland.
	88	*/
5b03a1b1 TH	89	unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *cdi,
5b03a1b1 TH	90	unsigned int clearing, int slot_nr)
f9afd18b BP	91	{
f9afd18b BP	92	ide_drive_t *drive = cdi->handle;
f9afd18b BP	93	int retval;
	94
	95	if (slot_nr == CDSL_CURRENT) {
	96	(void) cdrom_check_status(drive, NULL);
fe11edfa BZ	97	retval = (drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED) ? 1 : 0;
fe11edfa BZ	98	drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
5b03a1b1	99	return retval ? DISK_EVENT_MEDIA_CHANGE : 0;
f9afd18b	100	} else {
5b03a1b1	101	return 0;
f9afd18b BP	102	}
	103	}
	104
	105	/* Eject the disk if EJECTFLAG is 0.
	106	If EJECTFLAG is 1, try to reload the disk. */
	107	static
54f8a7ae	108	int cdrom_eject(ide_drive_t *drive, int ejectflag)
f9afd18b BP	109	{
	110	struct cdrom_info *cd = drive->driver_data;
	111	struct cdrom_device_info *cdi = &cd->devinfo;
f9afd18b	112	char loej = 0x02;
5f828546	113	unsigned char cmd[BLK_MAX_CDB];
f9afd18b	114
570f89ea	115	if ((drive->atapi_flags & IDE_AFLAG_NO_EJECT) && !ejectflag)
f9afd18b BP	116	return -EDRIVE_CANT_DO_THIS;
	117
	118	/* reload fails on some drives, if the tray is locked */
570f89ea	119	if ((drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) && ejectflag)
f9afd18b BP	120	return 0;
f9afd18b BP	121
f9afd18b BP	122	/* only tell drive to close tray if open, if it can do that */
	123	if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY))
	124	loej = 0;
	125
5f828546 FT	126	memset(cmd, 0, BLK_MAX_CDB);
	127
	128	cmd[0] = GPCMD_START_STOP_UNIT;
	129	cmd[4] = loej \| (ejectflag != 0);
f9afd18b	130
54f8a7ae	131	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, NULL, 0, 0);
f9afd18b BP	132	}
	133
	134	/* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
	135	static
54f8a7ae	136	int ide_cd_lockdoor(ide_drive_t *drive, int lockflag)
f9afd18b	137	{
e7d0748d	138	struct scsi_sense_hdr sshdr;
f9afd18b BP	139	int stat;
f9afd18b BP	140
f9afd18b	141	/* If the drive cannot lock the door, just pretend. */
42619d35	142	if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) {
f9afd18b BP	143	stat = 0;
f9afd18b BP	144	} else {
5f828546 FT	145	unsigned char cmd[BLK_MAX_CDB];
	146
	147	memset(cmd, 0, BLK_MAX_CDB);
	148
	149	cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
	150	cmd[4] = lockflag ? 1 : 0;
	151
1a677aba	152	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL,
e7d0748d	153	&sshdr, 0, 0);
f9afd18b BP	154	}
	155
	156	/* If we got an illegal field error, the drive
	157	probably cannot lock the door. */
	158	if (stat != 0 &&
e7d0748d KC	159	sshdr.sense_key == ILLEGAL_REQUEST &&
e7d0748d KC	160	(sshdr.asc == 0x24 \|\| sshdr.asc == 0x20)) {
f9afd18b BP	161	printk(KERN_ERR "%s: door locking not supported\n",
f9afd18b BP	162	drive->name);
42619d35	163	drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
f9afd18b BP	164	stat = 0;
	165	}
	166
	167	/* no medium, that's alright. */
e7d0748d	168	if (stat != 0 && sshdr.sense_key == NOT_READY && sshdr.asc == 0x3a)
f9afd18b BP	169	stat = 0;
	170
	171	if (stat == 0) {
	172	if (lockflag)
570f89ea	173	drive->atapi_flags \|= IDE_AFLAG_DOOR_LOCKED;
f9afd18b	174	else
570f89ea	175	drive->atapi_flags &= ~IDE_AFLAG_DOOR_LOCKED;
f9afd18b BP	176	}
	177
	178	return stat;
	179	}
	180
	181	int ide_cdrom_tray_move(struct cdrom_device_info *cdi, int position)
	182	{
	183	ide_drive_t *drive = cdi->handle;
f9afd18b BP	184
f9afd18b BP	185	if (position) {
54f8a7ae	186	int stat = ide_cd_lockdoor(drive, 0);
f9afd18b BP	187
	188	if (stat)
	189	return stat;
	190	}
	191
54f8a7ae	192	return cdrom_eject(drive, !position);
f9afd18b BP	193	}
f9afd18b BP	194
17802998 BZ	195	int ide_cdrom_lock_door(struct cdrom_device_info *cdi, int lock)
	196	{
	197	ide_drive_t *drive = cdi->handle;
	198
54f8a7ae	199	return ide_cd_lockdoor(drive, lock);
17802998 BZ	200	}
	201
	202	/*
	203	* ATAPI devices are free to select the speed you request or any slower
	204	* rate. :-( Requesting too fast a speed will _not_ produce an error.
	205	*/
	206	int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed)
	207	{
	208	ide_drive_t *drive = cdi->handle;
	209	struct cdrom_info *cd = drive->driver_data;
17802998 BZ	210	u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
17802998 BZ	211	int stat;
5f828546	212	unsigned char cmd[BLK_MAX_CDB];
17802998 BZ	213
	214	if (speed == 0)
	215	speed = 0xffff; /* set to max */
	216	else
	217	speed = 177; / Nx to kbytes/s */
	218
5f828546 FT	219	memset(cmd, 0, BLK_MAX_CDB);
	220
	221	cmd[0] = GPCMD_SET_SPEED;
17802998	222	/* Read Drive speed in kbytes/second MSB/LSB */
5f828546 FT	223	cmd[2] = (speed >> 8) & 0xff;
5f828546 FT	224	cmd[3] = speed & 0xff;
17802998 BZ	225	if ((cdi->mask & (CDC_CD_R \| CDC_CD_RW \| CDC_DVD_R)) !=
	226	(CDC_CD_R \| CDC_CD_RW \| CDC_DVD_R)) {
	227	/* Write Drive speed in kbytes/second MSB/LSB */
5f828546 FT	228	cmd[4] = (speed >> 8) & 0xff;
5f828546 FT	229	cmd[5] = speed & 0xff;
17802998 BZ	230	}
17802998 BZ	231
54f8a7ae	232	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, NULL, 0, 0);
17802998 BZ	233
	234	if (!ide_cdrom_get_capabilities(drive, buf)) {
	235	ide_cdrom_update_speed(drive, buf);
	236	cdi->speed = cd->current_speed;
	237	}
	238
	239	return 0;
	240	}
	241
	242	int ide_cdrom_get_last_session(struct cdrom_device_info *cdi,
	243	struct cdrom_multisession *ms_info)
	244	{
	245	struct atapi_toc *toc;
	246	ide_drive_t *drive = cdi->handle;
	247	struct cdrom_info *info = drive->driver_data;
17802998 BZ	248	int ret;
17802998 BZ	249
570f89ea	250	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0 \|\| !info->toc) {
54f8a7ae	251	ret = ide_cd_read_toc(drive);
17802998 BZ	252	if (ret)
	253	return ret;
	254	}
	255
	256	toc = info->toc;
	257	ms_info->addr.lba = toc->last_session_lba;
	258	ms_info->xa_flag = toc->xa_flag;
	259
	260	return 0;
	261	}
	262
	263	int ide_cdrom_get_mcn(struct cdrom_device_info *cdi,
	264	struct cdrom_mcn *mcn_info)
	265	{
	266	ide_drive_t *drive = cdi->handle;
	267	int stat, mcnlen;
17802998	268	char buf[24];
5f828546 FT	269	unsigned char cmd[BLK_MAX_CDB];
5f828546 FT	270	unsigned len = sizeof(buf);
17802998	271
5f828546	272	memset(cmd, 0, BLK_MAX_CDB);
17802998	273
5f828546 FT	274	cmd[0] = GPCMD_READ_SUBCHANNEL;
	275	cmd[1] = 2; /* MSF addressing */
	276	cmd[2] = 0x40; /* request subQ data */
	277	cmd[3] = 2; /* format */
	278	cmd[8] = len;
17802998	279
5f828546	280	stat = ide_cd_queue_pc(drive, cmd, 0, buf, &len, NULL, 0, 0);
17802998 BZ	281	if (stat)
	282	return stat;
	283
	284	mcnlen = sizeof(mcn_info->medium_catalog_number) - 1;
	285	memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen);
	286	mcn_info->medium_catalog_number[mcnlen] = '\0';
	287
	288	return 0;
	289	}
	290
	291	int ide_cdrom_reset(struct cdrom_device_info *cdi)
	292	{
	293	ide_drive_t *drive = cdi->handle;
	294	struct cdrom_info *cd = drive->driver_data;
0ef4c4db	295	struct request *rq;
17802998 BZ	296	int ret;
17802998 BZ	297
ff005a06	298	rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, 0);
2f5a8e80	299	ide_req(rq)->type = ATA_PRIV_MISC;
e8064021	300	rq->rq_flags = RQF_QUIET;
b7819b92	301	blk_execute_rq(drive->queue, cd->disk, rq, 0);
17d5363b	302	ret = scsi_req(rq)->result ? -EIO : 0;
0ef4c4db	303	blk_put_request(rq);
17802998 BZ	304	/*
	305	* A reset will unlock the door. If it was previously locked,
	306	* lock it again.
	307	*/
570f89ea	308	if (drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED)
54f8a7ae	309	(void)ide_cd_lockdoor(drive, 1);
17802998 BZ	310
	311	return ret;
	312	}
	313
	314	static int ide_cd_get_toc_entry(ide_drive_t *drive, int track,
	315	struct atapi_toc_entry **ent)
	316	{
	317	struct cdrom_info *info = drive->driver_data;
	318	struct atapi_toc *toc = info->toc;
	319	int ntracks;
	320
	321	/*
	322	* don't serve cached data, if the toc isn't valid
	323	*/
570f89ea	324	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0)
17802998 BZ	325	return -EINVAL;
	326
	327	/* Check validity of requested track number. */
	328	ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
	329
	330	if (toc->hdr.first_track == CDROM_LEADOUT)
	331	ntracks = 0;
	332
	333	if (track == CDROM_LEADOUT)
	334	*ent = &toc->ent[ntracks];
	335	else if (track < toc->hdr.first_track \|\| track > toc->hdr.last_track)
	336	return -EINVAL;
	337	else
	338	*ent = &toc->ent[track - toc->hdr.first_track];
	339
	340	return 0;
	341	}
	342
	343	static int ide_cd_fake_play_trkind(ide_drive_t drive, void arg)
	344	{
	345	struct cdrom_ti *ti = arg;
	346	struct atapi_toc_entry first_toc, last_toc;
	347	unsigned long lba_start, lba_end;
	348	int stat;
5f828546	349	unsigned char cmd[BLK_MAX_CDB];
17802998 BZ	350
	351	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc);
	352	if (stat)
	353	return stat;
	354
	355	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc);
	356	if (stat)
	357	return stat;
	358
	359	if (ti->cdti_trk1 != CDROM_LEADOUT)
	360	++last_toc;
	361	lba_start = first_toc->addr.lba;
	362	lba_end = last_toc->addr.lba;
	363
	364	if (lba_end <= lba_start)
	365	return -EINVAL;
	366
5f828546	367	memset(cmd, 0, BLK_MAX_CDB);
17802998	368
5f828546 FT	369	cmd[0] = GPCMD_PLAY_AUDIO_MSF;
	370	lba_to_msf(lba_start, &cmd[3], &cmd[4], &cmd[5]);
	371	lba_to_msf(lba_end - 1, &cmd[6], &cmd[7], &cmd[8]);
17802998	372
54f8a7ae	373	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, NULL, 0, 0);
17802998 BZ	374	}
	375
	376	static int ide_cd_read_tochdr(ide_drive_t drive, void arg)
	377	{
	378	struct cdrom_info *cd = drive->driver_data;
	379	struct cdrom_tochdr *tochdr = arg;
	380	struct atapi_toc *toc;
	381	int stat;
	382
	383	/* Make sure our saved TOC is valid. */
54f8a7ae	384	stat = ide_cd_read_toc(drive);
17802998 BZ	385	if (stat)
	386	return stat;
	387
	388	toc = cd->toc;
	389	tochdr->cdth_trk0 = toc->hdr.first_track;
	390	tochdr->cdth_trk1 = toc->hdr.last_track;
	391
	392	return 0;
	393	}
	394
	395	static int ide_cd_read_tocentry(ide_drive_t drive, void arg)
	396	{
	397	struct cdrom_tocentry *tocentry = arg;
	398	struct atapi_toc_entry *toce;
	399	int stat;
	400
	401	stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce);
	402	if (stat)
	403	return stat;
	404
	405	tocentry->cdte_ctrl = toce->control;
	406	tocentry->cdte_adr = toce->adr;
	407	if (tocentry->cdte_format == CDROM_MSF) {
	408	lba_to_msf(toce->addr.lba,
	409	&tocentry->cdte_addr.msf.minute,
	410	&tocentry->cdte_addr.msf.second,
	411	&tocentry->cdte_addr.msf.frame);
	412	} else
	413	tocentry->cdte_addr.lba = toce->addr.lba;
	414
	415	return 0;
	416	}
	417
	418	int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi,
	419	unsigned int cmd, void *arg)
	420	{
	421	ide_drive_t *drive = cdi->handle;
	422
	423	switch (cmd) {
	424	/*
	425	* emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since
	426	* atapi doesn't support it
	427	*/
	428	case CDROMPLAYTRKIND:
	429	return ide_cd_fake_play_trkind(drive, arg);
	430	case CDROMREADTOCHDR:
	431	return ide_cd_read_tochdr(drive, arg);
	432	case CDROMREADTOCENTRY:
	433	return ide_cd_read_tocentry(drive, arg);
	434	default:
	435	return -EINVAL;
	436	}
	437	}
f9afd18b BP	438
	439	/* the generic packet interface to cdrom.c */
	440	int ide_cdrom_packet(struct cdrom_device_info *cdi,
	441	struct packet_command *cgc)
	442	{
f9afd18b	443	ide_drive_t *drive = cdi->handle;
e8064021	444	req_flags_t flags = 0;
5f828546	445	unsigned len = cgc->buflen;
f9afd18b BP	446
	447	if (cgc->timeout <= 0)
	448	cgc->timeout = ATAPI_WAIT_PC;
	449
	450	/* here we queue the commands from the uniform CD-ROM
	451	layer. the packet must be complete, as we do not
	452	touch it at all. */
b348487f	453
e7d0748d KC	454	if (cgc->sshdr)
e7d0748d KC	455	memset(cgc->sshdr, 0, sizeof(*cgc->sshdr));
f9afd18b BP	456
f9afd18b BP	457	if (cgc->quiet)
e8064021	458	flags \|= RQF_QUIET;
f9afd18b	459
5f828546 FT	460	cgc->stat = ide_cd_queue_pc(drive, cgc->cmd,
	461	cgc->data_direction == CGC_DATA_WRITE,
	462	cgc->buffer, &len,
e7d0748d	463	cgc->sshdr, cgc->timeout, flags);
f9afd18b	464	if (!cgc->stat)
5f828546	465	cgc->buflen -= len;
f9afd18b BP	466	return cgc->stat;
f9afd18b BP	467	}