diff options
Diffstat (limited to 'drivers/ide/ide-cd_ioctl.c')
| -rw-r--r-- | drivers/ide/ide-cd_ioctl.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c index ec698c44e8b..b68284de4e8 100644 --- a/drivers/ide/ide-cd_ioctl.c +++ b/drivers/ide/ide-cd_ioctl.c @@ -9,9 +9,188 @@ #include <linux/kernel.h> #include <linux/cdrom.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; + struct cdrom_info *cd = drive->driver_data; + + if (!cdi->use_count) + cd->cd_flags &= ~IDE_CD_FLAG_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; + struct cdrom_info *cd = drive->driver_data; + int retval; + + if (slot_nr == CDSL_CURRENT) { + (void) cdrom_check_status(drive, NULL); + retval = (cd->cd_flags & IDE_CD_FLAG_MEDIA_CHANGED) ? 1 : 0; + cd->cd_flags &= ~IDE_CD_FLAG_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; + struct request req; + char loej = 0x02; + + if ((cd->cd_flags & IDE_CD_FLAG_NO_EJECT) && !ejectflag) + return -EDRIVE_CANT_DO_THIS; + + /* reload fails on some drives, if the tray is locked */ + if ((cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) && ejectflag) + return 0; + + ide_cd_init_rq(drive, &req); + + /* only tell drive to close tray if open, if it can do that */ + if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY)) + loej = 0; + + req.sense = sense; + req.cmd[0] = GPCMD_START_STOP_UNIT; + req.cmd[4] = loej | (ejectflag != 0); + + return ide_cd_queue_pc(drive, &req); +} + +/* 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 cdrom_info *cd = drive->driver_data; + struct request_sense my_sense; + struct request req; + int stat; + + if (sense == NULL) + sense = &my_sense; + + /* If the drive cannot lock the door, just pretend. */ + if (cd->cd_flags & IDE_CD_FLAG_NO_DOORLOCK) { + stat = 0; + } else { + ide_cd_init_rq(drive, &req); + req.sense = sense; + req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; + req.cmd[4] = lockflag ? 1 : 0; + stat = ide_cd_queue_pc(drive, &req); + } + + /* 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); + cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; + 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) + cd->cd_flags |= IDE_CD_FLAG_DOOR_LOCKED; + else + cd->cd_flags &= ~IDE_CD_FLAG_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; @@ -263,3 +442,34 @@ int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi, return -EINVAL; } } + +/* the generic packet interface to cdrom.c */ +int ide_cdrom_packet(struct cdrom_device_info *cdi, + struct packet_command *cgc) +{ + struct request req; + ide_drive_t *drive = cdi->handle; + + 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. */ + ide_cd_init_rq(drive, &req); + memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE); + if (cgc->sense) + memset(cgc->sense, 0, sizeof(struct request_sense)); + req.data = cgc->buffer; + req.data_len = cgc->buflen; + req.timeout = cgc->timeout; + + if (cgc->quiet) + req.cmd_flags |= REQ_QUIET; + + req.sense = cgc->sense; + cgc->stat = ide_cd_queue_pc(drive, &req); + if (!cgc->stat) + cgc->buflen -= req.data_len; + return cgc->stat; +} |