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

/*
 * cdrom.c IOCTLs handling for ide-cd driver.
 *
 * Copyright (C) 1994-1996  Scott Snyder <[email protected]>
 * Copyright (C) 1996-1998  Erik Andersen <[email protected]>
 * Copyright (C) 1998-2000  Jens Axboe <[email protected]>
 */

#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 request_sense sense;
	int stat;

	if (slot_nr != CDSL_CURRENT)
		return -EINVAL;

	stat = cdrom_check_status(drive, &sense);
	if (!stat || sense.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 (sense.sense_key == NOT_READY && sense.asc == 0x04
			&& sense.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 (sense.sense_key == NOT_READY) {
		if (sense.asc == 0x3a && sense.ascq == 1)
			return CDS_NO_DISC;
		else
			return CDS_TRAY_OPEN;
	}
	return CDS_DRIVE_NOT_READY;
}

int ide_cdrom_check_media_change_real(struct cdrom_device_info *cdi,
				       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;
	} else {
		return -EINVAL;
	}
}

/* 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 request_sense *sense)
{
	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, sense, 0, 0);
}

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

	if (sense == NULL)
		sense = &my_sense;

	/* 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,
				       sense, 0, 0);
	}

	/* If we got an illegal field error, the drive
	   probably cannot lock the door. */
	if (stat != 0 &&
	    sense->sense_key == ILLEGAL_REQUEST &&
	    (sense->asc == 0x24 || sense->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 && sense->sense_key == NOT_READY && sense->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;
	struct request_sense sense;

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

		if (stat)
			return stat;
	}

	return cdrom_eject(drive, !position, &sense);
}

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

	return ide_cd_lockdoor(drive, lock, NULL);
}

/*
 * 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;
	struct request_sense sense;
	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, &sense, 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;
	struct request_sense sense;
	int ret;

	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0 || !info->toc) {
		ret = ide_cd_read_toc(drive, &sense);
		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_sense sense;
	struct request *rq;
	int ret;

	rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
	rq->cmd_type = REQ_TYPE_SPECIAL;
	rq->cmd_flags = REQ_QUIET;
	ret = blk_execute_rq(drive->queue, cd->disk, rq, 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, &sense);

	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;
	struct request_sense sense;
	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, &sense, 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, NULL);
	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;
	unsigned int 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->data_direction == CGC_DATA_WRITE)
		flags |= REQ_RW;

	if (cgc->sense)
		memset(cgc->sense, 0, sizeof(struct request_sense));

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

	cgc->stat = ide_cd_queue_pc(drive, cgc->cmd,
				    cgc->data_direction == CGC_DATA_WRITE,
				    cgc->buffer, &len,
				    cgc->sense, cgc->timeout, flags);
	if (!cgc->stat)
		cgc->buflen -= len;
	return cgc->stat;
}
Commit	Line	Data
17802998 BZ	1	/*
	2	* cdrom.c IOCTLs handling for ide-cd driver.
	3	*
	4	* Copyright (C) 1994-1996 Scott Snyder <[email protected]>
	5	* Copyright (C) 1996-1998 Erik Andersen <[email protected]>
	6	* Copyright (C) 1998-2000 Jens Axboe <[email protected]>
	7	*/
	8
	9	#include <linux/kernel.h>
	10	#include <linux/cdrom.h>
5a0e3ad6	11	#include <linux/gfp.h>
17802998	12	#include <linux/ide.h>
f9afd18b	13	#include <scsi/scsi.h>
17802998 BZ	14
	15	#include "ide-cd.h"
	16
f9afd18b BP	17	/****************************************************************************
	18	* Other driver requests (open, close, check media change).
	19	*/
	20	int ide_cdrom_open_real(struct cdrom_device_info *cdi, int purpose)
	21	{
	22	return 0;
	23	}
	24
	25	/*
	26	* Close down the device. Invalidate all cached blocks.
	27	*/
	28	void ide_cdrom_release_real(struct cdrom_device_info *cdi)
	29	{
	30	ide_drive_t *drive = cdi->handle;
f9afd18b BP	31
f9afd18b BP	32	if (!cdi->use_count)
570f89ea	33	drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
f9afd18b BP	34	}
	35
	36	/*
	37	* add logic to try GET_EVENT command first to check for media and tray
	38	* status. this should be supported by newer cd-r/w and all DVD etc
	39	* drives
	40	*/
	41	int ide_cdrom_drive_status(struct cdrom_device_info *cdi, int slot_nr)
	42	{
	43	ide_drive_t *drive = cdi->handle;
	44	struct media_event_desc med;
	45	struct request_sense sense;
	46	int stat;
	47
	48	if (slot_nr != CDSL_CURRENT)
	49	return -EINVAL;
	50
	51	stat = cdrom_check_status(drive, &sense);
	52	if (!stat \|\| sense.sense_key == UNIT_ATTENTION)
	53	return CDS_DISC_OK;
	54
	55	if (!cdrom_get_media_event(cdi, &med)) {
	56	if (med.media_present)
	57	return CDS_DISC_OK;
	58	else if (med.door_open)
	59	return CDS_TRAY_OPEN;
	60	else
	61	return CDS_NO_DISC;
	62	}
	63
	64	if (sense.sense_key == NOT_READY && sense.asc == 0x04
	65	&& sense.ascq == 0x04)
	66	return CDS_DISC_OK;
	67
	68	/*
	69	* If not using Mt Fuji extended media tray reports,
	70	* just return TRAY_OPEN since ATAPI doesn't provide
	71	* any other way to detect this...
	72	*/
	73	if (sense.sense_key == NOT_READY) {
	74	if (sense.asc == 0x3a && sense.ascq == 1)
	75	return CDS_NO_DISC;
	76	else
	77	return CDS_TRAY_OPEN;
	78	}
	79	return CDS_DRIVE_NOT_READY;
	80	}
	81
	82	int ide_cdrom_check_media_change_real(struct cdrom_device_info *cdi,
	83	int slot_nr)
	84	{
	85	ide_drive_t *drive = cdi->handle;
f9afd18b BP	86	int retval;
	87
	88	if (slot_nr == CDSL_CURRENT) {
	89	(void) cdrom_check_status(drive, NULL);
fe11edfa BZ	90	retval = (drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED) ? 1 : 0;
fe11edfa BZ	91	drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
f9afd18b BP	92	return retval;
	93	} else {
	94	return -EINVAL;
	95	}
	96	}
	97
	98	/* Eject the disk if EJECTFLAG is 0.
	99	If EJECTFLAG is 1, try to reload the disk. */
	100	static
	101	int cdrom_eject(ide_drive_t *drive, int ejectflag,
	102	struct request_sense *sense)
	103	{
	104	struct cdrom_info *cd = drive->driver_data;
	105	struct cdrom_device_info *cdi = &cd->devinfo;
f9afd18b	106	char loej = 0x02;
5f828546	107	unsigned char cmd[BLK_MAX_CDB];
f9afd18b	108
570f89ea	109	if ((drive->atapi_flags & IDE_AFLAG_NO_EJECT) && !ejectflag)
f9afd18b BP	110	return -EDRIVE_CANT_DO_THIS;
	111
	112	/* reload fails on some drives, if the tray is locked */
570f89ea	113	if ((drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) && ejectflag)
f9afd18b BP	114	return 0;
f9afd18b BP	115
f9afd18b BP	116	/* only tell drive to close tray if open, if it can do that */
	117	if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY))
	118	loej = 0;
	119
5f828546 FT	120	memset(cmd, 0, BLK_MAX_CDB);
	121
	122	cmd[0] = GPCMD_START_STOP_UNIT;
	123	cmd[4] = loej \| (ejectflag != 0);
f9afd18b	124
1a677aba	125	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, 0);
f9afd18b BP	126	}
	127
	128	/* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
	129	static
	130	int ide_cd_lockdoor(ide_drive_t *drive, int lockflag,
	131	struct request_sense *sense)
	132	{
f9afd18b	133	struct request_sense my_sense;
f9afd18b BP	134	int stat;
	135
	136	if (sense == NULL)
	137	sense = &my_sense;
	138
	139	/* If the drive cannot lock the door, just pretend. */
42619d35	140	if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) {
f9afd18b BP	141	stat = 0;
f9afd18b BP	142	} else {
5f828546 FT	143	unsigned char cmd[BLK_MAX_CDB];
	144
	145	memset(cmd, 0, BLK_MAX_CDB);
	146
	147	cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
	148	cmd[4] = lockflag ? 1 : 0;
	149
1a677aba	150	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL,
5f828546	151	sense, 0, 0);
f9afd18b BP	152	}
	153
	154	/* If we got an illegal field error, the drive
	155	probably cannot lock the door. */
	156	if (stat != 0 &&
	157	sense->sense_key == ILLEGAL_REQUEST &&
	158	(sense->asc == 0x24 \|\| sense->asc == 0x20)) {
	159	printk(KERN_ERR "%s: door locking not supported\n",
	160	drive->name);
42619d35	161	drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
f9afd18b BP	162	stat = 0;
	163	}
	164
	165	/* no medium, that's alright. */
	166	if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a)
	167	stat = 0;
	168
	169	if (stat == 0) {
	170	if (lockflag)
570f89ea	171	drive->atapi_flags \|= IDE_AFLAG_DOOR_LOCKED;
f9afd18b	172	else
570f89ea	173	drive->atapi_flags &= ~IDE_AFLAG_DOOR_LOCKED;
f9afd18b BP	174	}
	175
	176	return stat;
	177	}
	178
	179	int ide_cdrom_tray_move(struct cdrom_device_info *cdi, int position)
	180	{
	181	ide_drive_t *drive = cdi->handle;
	182	struct request_sense sense;
	183
	184	if (position) {
	185	int stat = ide_cd_lockdoor(drive, 0, &sense);
	186
	187	if (stat)
	188	return stat;
	189	}
	190
	191	return cdrom_eject(drive, !position, &sense);
	192	}
	193
17802998 BZ	194	int ide_cdrom_lock_door(struct cdrom_device_info *cdi, int lock)
	195	{
	196	ide_drive_t *drive = cdi->handle;
	197
	198	return ide_cd_lockdoor(drive, lock, NULL);
	199	}
	200
	201	/*
	202	* ATAPI devices are free to select the speed you request or any slower
	203	* rate. :-( Requesting too fast a speed will _not_ produce an error.
	204	*/
	205	int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed)
	206	{
	207	ide_drive_t *drive = cdi->handle;
	208	struct cdrom_info *cd = drive->driver_data;
17802998 BZ	209	struct request_sense sense;
	210	u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
	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
1a677aba	232	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 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;
	248	struct request_sense sense;
	249	int ret;
	250
570f89ea	251	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0 \|\| !info->toc) {
17802998 BZ	252	ret = ide_cd_read_toc(drive, &sense);
	253	if (ret)
	254	return ret;
	255	}
	256
	257	toc = info->toc;
	258	ms_info->addr.lba = toc->last_session_lba;
	259	ms_info->xa_flag = toc->xa_flag;
	260
	261	return 0;
	262	}
	263
	264	int ide_cdrom_get_mcn(struct cdrom_device_info *cdi,
	265	struct cdrom_mcn *mcn_info)
	266	{
	267	ide_drive_t *drive = cdi->handle;
	268	int stat, mcnlen;
17802998	269	char buf[24];
5f828546 FT	270	unsigned char cmd[BLK_MAX_CDB];
5f828546 FT	271	unsigned len = sizeof(buf);
17802998	272
5f828546	273	memset(cmd, 0, BLK_MAX_CDB);
17802998	274
5f828546 FT	275	cmd[0] = GPCMD_READ_SUBCHANNEL;
	276	cmd[1] = 2; /* MSF addressing */
	277	cmd[2] = 0x40; /* request subQ data */
	278	cmd[3] = 2; /* format */
	279	cmd[8] = len;
17802998	280
5f828546	281	stat = ide_cd_queue_pc(drive, cmd, 0, buf, &len, NULL, 0, 0);
17802998 BZ	282	if (stat)
	283	return stat;
	284
	285	mcnlen = sizeof(mcn_info->medium_catalog_number) - 1;
	286	memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen);
	287	mcn_info->medium_catalog_number[mcnlen] = '\0';
	288
	289	return 0;
	290	}
	291
	292	int ide_cdrom_reset(struct cdrom_device_info *cdi)
	293	{
	294	ide_drive_t *drive = cdi->handle;
	295	struct cdrom_info *cd = drive->driver_data;
	296	struct request_sense sense;
0ef4c4db	297	struct request *rq;
17802998 BZ	298	int ret;
17802998 BZ	299
0ef4c4db FT	300	rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
	301	rq->cmd_type = REQ_TYPE_SPECIAL;
	302	rq->cmd_flags = REQ_QUIET;
	303	ret = blk_execute_rq(drive->queue, cd->disk, rq, 0);
	304	blk_put_request(rq);
17802998 BZ	305	/*
	306	* A reset will unlock the door. If it was previously locked,
	307	* lock it again.
	308	*/
570f89ea	309	if (drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED)
17802998 BZ	310	(void)ide_cd_lockdoor(drive, 1, &sense);
	311
	312	return ret;
	313	}
	314
	315	static int ide_cd_get_toc_entry(ide_drive_t *drive, int track,
	316	struct atapi_toc_entry **ent)
	317	{
	318	struct cdrom_info *info = drive->driver_data;
	319	struct atapi_toc *toc = info->toc;
	320	int ntracks;
	321
	322	/*
	323	* don't serve cached data, if the toc isn't valid
	324	*/
570f89ea	325	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0)
17802998 BZ	326	return -EINVAL;
	327
	328	/* Check validity of requested track number. */
	329	ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
	330
	331	if (toc->hdr.first_track == CDROM_LEADOUT)
	332	ntracks = 0;
	333
	334	if (track == CDROM_LEADOUT)
	335	*ent = &toc->ent[ntracks];
	336	else if (track < toc->hdr.first_track \|\| track > toc->hdr.last_track)
	337	return -EINVAL;
	338	else
	339	*ent = &toc->ent[track - toc->hdr.first_track];
	340
	341	return 0;
	342	}
	343
	344	static int ide_cd_fake_play_trkind(ide_drive_t drive, void arg)
	345	{
	346	struct cdrom_ti *ti = arg;
	347	struct atapi_toc_entry first_toc, last_toc;
	348	unsigned long lba_start, lba_end;
	349	int stat;
17802998	350	struct request_sense sense;
5f828546	351	unsigned char cmd[BLK_MAX_CDB];
17802998 BZ	352
	353	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc);
	354	if (stat)
	355	return stat;
	356
	357	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc);
	358	if (stat)
	359	return stat;
	360
	361	if (ti->cdti_trk1 != CDROM_LEADOUT)
	362	++last_toc;
	363	lba_start = first_toc->addr.lba;
	364	lba_end = last_toc->addr.lba;
	365
	366	if (lba_end <= lba_start)
	367	return -EINVAL;
	368
5f828546	369	memset(cmd, 0, BLK_MAX_CDB);
17802998	370
5f828546 FT	371	cmd[0] = GPCMD_PLAY_AUDIO_MSF;
	372	lba_to_msf(lba_start, &cmd[3], &cmd[4], &cmd[5]);
	373	lba_to_msf(lba_end - 1, &cmd[6], &cmd[7], &cmd[8]);
17802998	374
1a677aba	375	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 0, 0);
17802998 BZ	376	}
	377
	378	static int ide_cd_read_tochdr(ide_drive_t drive, void arg)
	379	{
	380	struct cdrom_info *cd = drive->driver_data;
	381	struct cdrom_tochdr *tochdr = arg;
	382	struct atapi_toc *toc;
	383	int stat;
	384
	385	/* Make sure our saved TOC is valid. */
	386	stat = ide_cd_read_toc(drive, NULL);
	387	if (stat)
	388	return stat;
	389
	390	toc = cd->toc;
	391	tochdr->cdth_trk0 = toc->hdr.first_track;
	392	tochdr->cdth_trk1 = toc->hdr.last_track;
	393
	394	return 0;
	395	}
	396
	397	static int ide_cd_read_tocentry(ide_drive_t drive, void arg)
	398	{
	399	struct cdrom_tocentry *tocentry = arg;
	400	struct atapi_toc_entry *toce;
	401	int stat;
	402
	403	stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce);
	404	if (stat)
	405	return stat;
	406
	407	tocentry->cdte_ctrl = toce->control;
	408	tocentry->cdte_adr = toce->adr;
	409	if (tocentry->cdte_format == CDROM_MSF) {
	410	lba_to_msf(toce->addr.lba,
	411	&tocentry->cdte_addr.msf.minute,
	412	&tocentry->cdte_addr.msf.second,
	413	&tocentry->cdte_addr.msf.frame);
	414	} else
	415	tocentry->cdte_addr.lba = toce->addr.lba;
	416
	417	return 0;
	418	}
	419
	420	int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi,
	421	unsigned int cmd, void *arg)
	422	{
	423	ide_drive_t *drive = cdi->handle;
	424
	425	switch (cmd) {
	426	/*
	427	* emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since
	428	* atapi doesn't support it
	429	*/
	430	case CDROMPLAYTRKIND:
	431	return ide_cd_fake_play_trkind(drive, arg);
	432	case CDROMREADTOCHDR:
	433	return ide_cd_read_tochdr(drive, arg);
	434	case CDROMREADTOCENTRY:
	435	return ide_cd_read_tocentry(drive, arg);
	436	default:
	437	return -EINVAL;
	438	}
	439	}
f9afd18b BP	440
	441	/* the generic packet interface to cdrom.c */
	442	int ide_cdrom_packet(struct cdrom_device_info *cdi,
	443	struct packet_command *cgc)
	444	{
f9afd18b	445	ide_drive_t *drive = cdi->handle;
5f828546 FT	446	unsigned int flags = 0;
5f828546 FT	447	unsigned len = cgc->buflen;
f9afd18b BP	448
	449	if (cgc->timeout <= 0)
	450	cgc->timeout = ATAPI_WAIT_PC;
	451
	452	/* here we queue the commands from the uniform CD-ROM
	453	layer. the packet must be complete, as we do not
	454	touch it at all. */
b348487f BZ	455
b348487f BZ	456	if (cgc->data_direction == CGC_DATA_WRITE)
5f828546	457	flags \|= REQ_RW;
b348487f	458
f9afd18b BP	459	if (cgc->sense)
f9afd18b BP	460	memset(cgc->sense, 0, sizeof(struct request_sense));
f9afd18b BP	461
f9afd18b BP	462	if (cgc->quiet)
5f828546	463	flags \|= REQ_QUIET;
f9afd18b	464
5f828546 FT	465	cgc->stat = ide_cd_queue_pc(drive, cgc->cmd,
	466	cgc->data_direction == CGC_DATA_WRITE,
	467	cgc->buffer, &len,
	468	cgc->sense, cgc->timeout, flags);
f9afd18b	469	if (!cgc->stat)
5f828546	470	cgc->buflen -= len;
f9afd18b BP	471	return cgc->stat;
f9afd18b BP	472	}