Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2/*
3 * Copyright (C) 2000 Jens Axboe <axboe@suse.de>
4 * Copyright (C) 2001-2004 Peter Osterlund <petero2@telia.com>
5 *
6 * May be copied or modified under the terms of the GNU General Public
7 * License. See linux/COPYING for more information.
8 *
9 * Packet writing layer for ATAPI and SCSI CD-R, CD-RW, DVD-R, and
10 * DVD-RW devices.
11 *
12 */
13#ifndef _UAPI__PKTCDVD_H
14#define _UAPI__PKTCDVD_H
15
16#include <linux/types.h>
17
18/*
19 * 1 for normal debug messages, 2 is very verbose. 0 to turn it off.
20 */
21#define PACKET_DEBUG 1
22
23#define MAX_WRITERS 8
24
25#define PKT_RB_POOL_SIZE 512
26
27/*
28 * How long we should hold a non-full packet before starting data gathering.
29 */
30#define PACKET_WAIT_TIME (HZ * 5 / 1000)
31
32/*
33 * No user-servicable parts beyond this point ->
34 */
35
36/*
37 * device types
38 */
39#define PACKET_CDR 1
40#define PACKET_CDRW 2
41#define PACKET_DVDR 3
42#define PACKET_DVDRW 4
43
44/*
45 * flags
46 */
47#define PACKET_WRITABLE 1 /* pd is writable */
48#define PACKET_NWA_VALID 2 /* next writable address valid */
49#define PACKET_LRA_VALID 3 /* last recorded address valid */
50#define PACKET_MERGE_SEGS 4 /* perform segment merging to keep */
51 /* underlying cdrom device happy */
52
53/*
54 * Disc status -- from READ_DISC_INFO
55 */
56#define PACKET_DISC_EMPTY 0
57#define PACKET_DISC_INCOMPLETE 1
58#define PACKET_DISC_COMPLETE 2
59#define PACKET_DISC_OTHER 3
60
61/*
62 * write type, and corresponding data block type
63 */
64#define PACKET_MODE1 1
65#define PACKET_MODE2 2
66#define PACKET_BLOCK_MODE1 8
67#define PACKET_BLOCK_MODE2 10
68
69/*
70 * Last session/border status
71 */
72#define PACKET_SESSION_EMPTY 0
73#define PACKET_SESSION_INCOMPLETE 1
74#define PACKET_SESSION_RESERVED 2
75#define PACKET_SESSION_COMPLETE 3
76
77#define PACKET_MCN "4a656e734178626f65323030300000"
78
79#undef PACKET_USE_LS
80
81#define PKT_CTRL_CMD_SETUP 0
82#define PKT_CTRL_CMD_TEARDOWN 1
83#define PKT_CTRL_CMD_STATUS 2
84
85struct pkt_ctrl_command {
86 __u32 command; /* in: Setup, teardown, status */
87 __u32 dev_index; /* in/out: Device index */
88 __u32 dev; /* in/out: Device nr for cdrw device */
89 __u32 pkt_dev; /* in/out: Device nr for packet device */
90 __u32 num_devices; /* out: Largest device index + 1 */
91 __u32 padding; /* Not used */
92};
93
94/*
95 * packet ioctls
96 */
97#define PACKET_IOCTL_MAGIC ('X')
98#define PACKET_CTRL_CMD _IOWR(PACKET_IOCTL_MAGIC, 1, struct pkt_ctrl_command)
99
100
101#endif /* _UAPI__PKTCDVD_H */