#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 -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;
+}
projects / mv-sheeva.git / blobdiff