source: svn/trunk/newcon3bcm2_21bu/toolchain/mipsel-linux-uclibc/include/linux/pktcdvd.h @ 48

/*
 * Copyright (C) 2000 Jens Axboe <axboe@suse.de>
 * Copyright (C) 2001-2004 Peter Osterlund <petero2@telia.com>
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.
 *
 * Packet writing layer for ATAPI and SCSI CD-R, CD-RW, DVD-R, and
 * DVD-RW devices.
 *
 */
#ifndef __PKTCDVD_H
#define __PKTCDVD_H

#include <linux/types.h>

/*
 * 1 for normal debug messages, 2 is very verbose. 0 to turn it off.
 */
#define PACKET_DEBUG            1

#define MAX_WRITERS             8

#define PKT_RB_POOL_SIZE        512

/*
 * How long we should hold a non-full packet before starting data gathering.
 */
#define PACKET_WAIT_TIME        (HZ * 5 / 1000)

/*
 * use drive write caching -- we need deferred error handling to be
 * able to sucessfully recover with this option (drive will return good
 * status as soon as the cdb is validated).
 */
#if defined(CONFIG_CDROM_PKTCDVD_WCACHE)
#define USE_WCACHING            1
#else
#define USE_WCACHING            0
#endif

/*
 * No user-servicable parts beyond this point ->
 */

/*
 * device types
 */
#define PACKET_CDR              1
#define PACKET_CDRW             2
#define PACKET_DVDR             3
#define PACKET_DVDRW            4

/*
 * flags
 */
#define PACKET_WRITABLE         1       /* pd is writable */
#define PACKET_NWA_VALID        2       /* next writable address valid */
#define PACKET_LRA_VALID        3       /* last recorded address valid */
#define PACKET_MERGE_SEGS       4       /* perform segment merging to keep */
                                        /* underlying cdrom device happy */

/*
 * Disc status -- from READ_DISC_INFO
 */
#define PACKET_DISC_EMPTY       0
#define PACKET_DISC_INCOMPLETE  1
#define PACKET_DISC_COMPLETE    2
#define PACKET_DISC_OTHER       3

/*
 * write type, and corresponding data block type
 */
#define PACKET_MODE1            1
#define PACKET_MODE2            2
#define PACKET_BLOCK_MODE1      8
#define PACKET_BLOCK_MODE2      10

/*
 * Last session/border status
 */
#define PACKET_SESSION_EMPTY            0
#define PACKET_SESSION_INCOMPLETE       1
#define PACKET_SESSION_RESERVED         2
#define PACKET_SESSION_COMPLETE         3

#define PACKET_MCN                      "4a656e734178626f65323030300000"

#undef PACKET_USE_LS

#define PKT_CTRL_CMD_SETUP      0
#define PKT_CTRL_CMD_TEARDOWN   1
#define PKT_CTRL_CMD_STATUS     2

struct pkt_ctrl_command {
        __u32 command;                          /* in: Setup, teardown, status */
        __u32 dev_index;                        /* in/out: Device index */
        __u32 dev;                              /* in/out: Device nr for cdrw device */
        __u32 pkt_dev;                          /* in/out: Device nr for packet device */
        __u32 num_devices;                      /* out: Largest device index + 1 */
        __u32 padding;                          /* Not used */
};

/*
 * packet ioctls
 */
#define PACKET_IOCTL_MAGIC      ('X')
#define PACKET_CTRL_CMD         _IOWR(PACKET_IOCTL_MAGIC, 1, struct pkt_ctrl_command)

#endif /* __PKTCDVD_H */