/* * 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 <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; 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; } } /* 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); if (cgc->data_direction == CGC_DATA_WRITE) req.cmd_flags |= REQ_RW; 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; }