/*
* 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/ide.h>
#include "ide-cd.h"
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 rq;
struct request_sense sense;
u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
int stat;
ide_cd_init_rq(drive, &rq);
rq.sense = &sense;
if (speed == 0)
speed = 0xffff; /* set to max */
else
speed *= 177; /* Nx to kbytes/s */
rq.cmd[0] = GPCMD_SET_SPEED;
/* Read Drive speed in kbytes/second MSB/LSB */
rq.cmd[2] = (speed >> 8) & 0xff;
rq.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 */
rq.cmd[4] = (speed >> 8) & 0xff;
rq.cmd[5] = speed & 0xff;
}
stat = ide_cd_queue_pc(drive, &rq);
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 ((info->cd_flags & IDE_CD_FLAG_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;
struct request rq;
char buf[24];
ide_cd_init_rq(drive, &rq);
rq.data = buf;
rq.data_len = sizeof(buf);
rq.cmd[0] = GPCMD_READ_SUBCHANNEL;
rq.cmd[1] = 2; /* MSF addressing */
rq.cmd[2] = 0x40; /* request subQ data */
rq.cmd[3] = 2; /* format */
rq.cmd[8] = sizeof(buf);
stat = ide_cd_queue_pc(drive, &rq);
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 req;
int ret;
ide_cd_init_rq(drive, &req);
req.cmd_type = REQ_TYPE_SPECIAL;
req.cmd_flags = REQ_QUIET;
ret = ide_do_drive_cmd(drive, &req, ide_wait);
/*
* A reset will unlock the door. If it was previously locked,
* lock it again.
*/
if (cd->cd_flags & IDE_CD_FLAG_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 ((info->cd_flags & IDE_CD_FLAG_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 rq;
struct request_sense sense;
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;
ide_cd_init_rq(drive, &rq);
rq.sense = &sense;
rq.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
lba_to_msf(lba_start, &rq.cmd[3], &rq.cmd[4], &rq.cmd[5]);
lba_to_msf(lba_end - 1, &rq.cmd[6], &rq.cmd[7], &rq.cmd[8]);
return ide_cd_queue_pc(drive, &rq);
}
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;
}
}
