/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* 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 _UAPI__PKTCDVD_H
#define _UAPI__PKTCDVD_H
#include <linux/types.h>
/*
* UNUSED :
* 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 )
/*
* 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 /* _UAPI__PKTCDVD_H */
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