[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_EVENT_FLAG_UEVENT is cleared in disk->event_flags
 * 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	/*
7eec77a1 TH	84	* ide-cd always generates media changed event if media is missing, which
3c12c8e9 MW	85	* makes it impossible to use for proper event reporting, so
	86	* DISK_EVENT_FLAG_UEVENT is cleared in disk->event_flags
	87	* and the following function is used only to trigger
7eec77a1 TH	88	* revalidation and never propagated to userland.
7eec77a1 TH	89	*/
5b03a1b1 TH	90	unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *cdi,
5b03a1b1 TH	91	unsigned int clearing, int slot_nr)
f9afd18b BP	92	{
f9afd18b BP	93	ide_drive_t *drive = cdi->handle;
f9afd18b BP	94	int retval;
	95
	96	if (slot_nr == CDSL_CURRENT) {
	97	(void) cdrom_check_status(drive, NULL);
fe11edfa BZ	98	retval = (drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED) ? 1 : 0;
fe11edfa BZ	99	drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
5b03a1b1	100	return retval ? DISK_EVENT_MEDIA_CHANGE : 0;
f9afd18b	101	} else {
5b03a1b1	102	return 0;
f9afd18b BP	103	}
	104	}
	105
	106	/* Eject the disk if EJECTFLAG is 0.
	107	If EJECTFLAG is 1, try to reload the disk. */
	108	static
54f8a7ae	109	int cdrom_eject(ide_drive_t *drive, int ejectflag)
f9afd18b BP	110	{
	111	struct cdrom_info *cd = drive->driver_data;
	112	struct cdrom_device_info *cdi = &cd->devinfo;
f9afd18b	113	char loej = 0x02;
5f828546	114	unsigned char cmd[BLK_MAX_CDB];
f9afd18b	115
570f89ea	116	if ((drive->atapi_flags & IDE_AFLAG_NO_EJECT) && !ejectflag)
f9afd18b BP	117	return -EDRIVE_CANT_DO_THIS;
	118
	119	/* reload fails on some drives, if the tray is locked */
570f89ea	120	if ((drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) && ejectflag)
f9afd18b BP	121	return 0;
f9afd18b BP	122
f9afd18b BP	123	/* only tell drive to close tray if open, if it can do that */
	124	if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY))
	125	loej = 0;
	126
5f828546 FT	127	memset(cmd, 0, BLK_MAX_CDB);
	128
	129	cmd[0] = GPCMD_START_STOP_UNIT;
	130	cmd[4] = loej \| (ejectflag != 0);
f9afd18b	131
54f8a7ae	132	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, NULL, 0, 0);
f9afd18b BP	133	}
	134
	135	/* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
	136	static
54f8a7ae	137	int ide_cd_lockdoor(ide_drive_t *drive, int lockflag)
f9afd18b	138	{
e7d0748d	139	struct scsi_sense_hdr sshdr;
f9afd18b BP	140	int stat;
f9afd18b BP	141
f9afd18b	142	/* If the drive cannot lock the door, just pretend. */
42619d35	143	if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) {
f9afd18b BP	144	stat = 0;
f9afd18b BP	145	} else {
5f828546 FT	146	unsigned char cmd[BLK_MAX_CDB];
	147
	148	memset(cmd, 0, BLK_MAX_CDB);
	149
	150	cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
	151	cmd[4] = lockflag ? 1 : 0;
	152
1a677aba	153	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL,
e7d0748d	154	&sshdr, 0, 0);
f9afd18b BP	155	}
	156
	157	/* If we got an illegal field error, the drive
	158	probably cannot lock the door. */
	159	if (stat != 0 &&
e7d0748d KC	160	sshdr.sense_key == ILLEGAL_REQUEST &&
e7d0748d KC	161	(sshdr.asc == 0x24 \|\| sshdr.asc == 0x20)) {
f9afd18b BP	162	printk(KERN_ERR "%s: door locking not supported\n",
f9afd18b BP	163	drive->name);
42619d35	164	drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
f9afd18b BP	165	stat = 0;
	166	}
	167
	168	/* no medium, that's alright. */
e7d0748d	169	if (stat != 0 && sshdr.sense_key == NOT_READY && sshdr.asc == 0x3a)
f9afd18b BP	170	stat = 0;
	171
	172	if (stat == 0) {
	173	if (lockflag)
570f89ea	174	drive->atapi_flags \|= IDE_AFLAG_DOOR_LOCKED;
f9afd18b	175	else
570f89ea	176	drive->atapi_flags &= ~IDE_AFLAG_DOOR_LOCKED;
f9afd18b BP	177	}
	178
	179	return stat;
	180	}
	181
	182	int ide_cdrom_tray_move(struct cdrom_device_info *cdi, int position)
	183	{
	184	ide_drive_t *drive = cdi->handle;
f9afd18b BP	185
f9afd18b BP	186	if (position) {
54f8a7ae	187	int stat = ide_cd_lockdoor(drive, 0);
f9afd18b BP	188
	189	if (stat)
	190	return stat;
	191	}
	192
54f8a7ae	193	return cdrom_eject(drive, !position);
f9afd18b BP	194	}
f9afd18b BP	195
17802998 BZ	196	int ide_cdrom_lock_door(struct cdrom_device_info *cdi, int lock)
	197	{
	198	ide_drive_t *drive = cdi->handle;
	199
54f8a7ae	200	return ide_cd_lockdoor(drive, lock);
17802998 BZ	201	}
	202
	203	/*
	204	* ATAPI devices are free to select the speed you request or any slower
	205	* rate. :-( Requesting too fast a speed will _not_ produce an error.
	206	*/
	207	int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed)
	208	{
	209	ide_drive_t *drive = cdi->handle;
	210	struct cdrom_info *cd = drive->driver_data;
17802998 BZ	211	u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
17802998 BZ	212	int stat;
5f828546	213	unsigned char cmd[BLK_MAX_CDB];
17802998 BZ	214
	215	if (speed == 0)
	216	speed = 0xffff; /* set to max */
	217	else
	218	speed = 177; / Nx to kbytes/s */
	219
5f828546 FT	220	memset(cmd, 0, BLK_MAX_CDB);
	221
	222	cmd[0] = GPCMD_SET_SPEED;
17802998	223	/* Read Drive speed in kbytes/second MSB/LSB */
5f828546 FT	224	cmd[2] = (speed >> 8) & 0xff;
5f828546 FT	225	cmd[3] = speed & 0xff;
17802998 BZ	226	if ((cdi->mask & (CDC_CD_R \| CDC_CD_RW \| CDC_DVD_R)) !=
	227	(CDC_CD_R \| CDC_CD_RW \| CDC_DVD_R)) {
	228	/* Write Drive speed in kbytes/second MSB/LSB */
5f828546 FT	229	cmd[4] = (speed >> 8) & 0xff;
5f828546 FT	230	cmd[5] = speed & 0xff;
17802998 BZ	231	}
17802998 BZ	232
54f8a7ae	233	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, NULL, 0, 0);
17802998 BZ	234
	235	if (!ide_cdrom_get_capabilities(drive, buf)) {
	236	ide_cdrom_update_speed(drive, buf);
	237	cdi->speed = cd->current_speed;
	238	}
	239
	240	return 0;
	241	}
	242
	243	int ide_cdrom_get_last_session(struct cdrom_device_info *cdi,
	244	struct cdrom_multisession *ms_info)
	245	{
	246	struct atapi_toc *toc;
	247	ide_drive_t *drive = cdi->handle;
	248	struct cdrom_info *info = drive->driver_data;
17802998 BZ	249	int ret;
17802998 BZ	250
570f89ea	251	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0 \|\| !info->toc) {
54f8a7ae	252	ret = ide_cd_read_toc(drive);
17802998 BZ	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;
0ef4c4db	296	struct request *rq;
17802998 BZ	297	int ret;
17802998 BZ	298
ff005a06	299	rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, 0);
2f5a8e80	300	ide_req(rq)->type = ATA_PRIV_MISC;
e8064021	301	rq->rq_flags = RQF_QUIET;
b7819b92	302	blk_execute_rq(drive->queue, cd->disk, rq, 0);
17d5363b	303	ret = scsi_req(rq)->result ? -EIO : 0;
0ef4c4db	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)
54f8a7ae	310	(void)ide_cd_lockdoor(drive, 1);
17802998 BZ	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;
5f828546	350	unsigned char cmd[BLK_MAX_CDB];
17802998 BZ	351
	352	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc);
	353	if (stat)
	354	return stat;
	355
	356	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc);
	357	if (stat)
	358	return stat;
	359
	360	if (ti->cdti_trk1 != CDROM_LEADOUT)
	361	++last_toc;
	362	lba_start = first_toc->addr.lba;
	363	lba_end = last_toc->addr.lba;
	364
	365	if (lba_end <= lba_start)
	366	return -EINVAL;
	367
5f828546	368	memset(cmd, 0, BLK_MAX_CDB);
17802998	369
5f828546 FT	370	cmd[0] = GPCMD_PLAY_AUDIO_MSF;
	371	lba_to_msf(lba_start, &cmd[3], &cmd[4], &cmd[5]);
	372	lba_to_msf(lba_end - 1, &cmd[6], &cmd[7], &cmd[8]);
17802998	373
54f8a7ae	374	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, NULL, 0, 0);
17802998 BZ	375	}
	376
	377	static int ide_cd_read_tochdr(ide_drive_t drive, void arg)
	378	{
	379	struct cdrom_info *cd = drive->driver_data;
	380	struct cdrom_tochdr *tochdr = arg;
	381	struct atapi_toc *toc;
	382	int stat;
	383
	384	/* Make sure our saved TOC is valid. */
54f8a7ae	385	stat = ide_cd_read_toc(drive);
17802998 BZ	386	if (stat)
	387	return stat;
	388
	389	toc = cd->toc;
	390	tochdr->cdth_trk0 = toc->hdr.first_track;
	391	tochdr->cdth_trk1 = toc->hdr.last_track;
	392
	393	return 0;
	394	}
	395
	396	static int ide_cd_read_tocentry(ide_drive_t drive, void arg)
	397	{
	398	struct cdrom_tocentry *tocentry = arg;
	399	struct atapi_toc_entry *toce;
	400	int stat;
	401
	402	stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce);
	403	if (stat)
	404	return stat;
	405
	406	tocentry->cdte_ctrl = toce->control;
	407	tocentry->cdte_adr = toce->adr;
	408	if (tocentry->cdte_format == CDROM_MSF) {
	409	lba_to_msf(toce->addr.lba,
	410	&tocentry->cdte_addr.msf.minute,
	411	&tocentry->cdte_addr.msf.second,
	412	&tocentry->cdte_addr.msf.frame);
	413	} else
	414	tocentry->cdte_addr.lba = toce->addr.lba;
	415
	416	return 0;
	417	}
	418
	419	int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi,
	420	unsigned int cmd, void *arg)
	421	{
	422	ide_drive_t *drive = cdi->handle;
	423
	424	switch (cmd) {
	425	/*
	426	* emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since
	427	* atapi doesn't support it
	428	*/
	429	case CDROMPLAYTRKIND:
	430	return ide_cd_fake_play_trkind(drive, arg);
	431	case CDROMREADTOCHDR:
	432	return ide_cd_read_tochdr(drive, arg);
	433	case CDROMREADTOCENTRY:
	434	return ide_cd_read_tocentry(drive, arg);
	435	default:
	436	return -EINVAL;
	437	}
	438	}
f9afd18b BP	439
	440	/* the generic packet interface to cdrom.c */
	441	int ide_cdrom_packet(struct cdrom_device_info *cdi,
	442	struct packet_command *cgc)
	443	{
f9afd18b	444	ide_drive_t *drive = cdi->handle;
e8064021	445	req_flags_t flags = 0;
5f828546	446	unsigned len = cgc->buflen;
f9afd18b BP	447
	448	if (cgc->timeout <= 0)
	449	cgc->timeout = ATAPI_WAIT_PC;
	450
	451	/* here we queue the commands from the uniform CD-ROM
	452	layer. the packet must be complete, as we do not
	453	touch it at all. */
b348487f	454
e7d0748d KC	455	if (cgc->sshdr)
e7d0748d KC	456	memset(cgc->sshdr, 0, sizeof(*cgc->sshdr));
f9afd18b BP	457
f9afd18b BP	458	if (cgc->quiet)
e8064021	459	flags \|= RQF_QUIET;
f9afd18b	460
5f828546 FT	461	cgc->stat = ide_cd_queue_pc(drive, cgc->cmd,
	462	cgc->data_direction == CGC_DATA_WRITE,
	463	cgc->buffer, &len,
e7d0748d	464	cgc->sshdr, cgc->timeout, flags);
f9afd18b	465	if (!cgc->stat)
5f828546	466	cgc->buflen -= len;
f9afd18b BP	467	return cgc->stat;
f9afd18b BP	468	}