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 | * UNUSED: |
20 | * 1 for normal debug messages, 2 is very verbose. 0 to turn it off. |
21 | */ |
22 | #define PACKET_DEBUG 1 |
23 | |
24 | #define MAX_WRITERS 8 |
25 | |
26 | #define PKT_RB_POOL_SIZE 512 |
27 | |
28 | /* |
29 | * How long we should hold a non-full packet before starting data gathering. |
30 | */ |
31 | #define PACKET_WAIT_TIME (HZ * 5 / 1000) |
32 | |
33 | /* |
34 | * No user-servicable parts beyond this point -> |
35 | */ |
36 | |
37 | /* |
38 | * device types |
39 | */ |
40 | #define PACKET_CDR 1 |
41 | #define PACKET_CDRW 2 |
42 | #define PACKET_DVDR 3 |
43 | #define PACKET_DVDRW 4 |
44 | |
45 | /* |
46 | * flags |
47 | */ |
48 | #define PACKET_WRITABLE 1 /* pd is writable */ |
49 | #define PACKET_NWA_VALID 2 /* next writable address valid */ |
50 | #define PACKET_LRA_VALID 3 /* last recorded address valid */ |
51 | #define PACKET_MERGE_SEGS 4 /* perform segment merging to keep */ |
52 | /* underlying cdrom device happy */ |
53 | |
54 | /* |
55 | * Disc status -- from READ_DISC_INFO |
56 | */ |
57 | #define PACKET_DISC_EMPTY 0 |
58 | #define PACKET_DISC_INCOMPLETE 1 |
59 | #define PACKET_DISC_COMPLETE 2 |
60 | #define PACKET_DISC_OTHER 3 |
61 | |
62 | /* |
63 | * write type, and corresponding data block type |
64 | */ |
65 | #define PACKET_MODE1 1 |
66 | #define PACKET_MODE2 2 |
67 | #define PACKET_BLOCK_MODE1 8 |
68 | #define PACKET_BLOCK_MODE2 10 |
69 | |
70 | /* |
71 | * Last session/border status |
72 | */ |
73 | #define PACKET_SESSION_EMPTY 0 |
74 | #define PACKET_SESSION_INCOMPLETE 1 |
75 | #define PACKET_SESSION_RESERVED 2 |
76 | #define PACKET_SESSION_COMPLETE 3 |
77 | |
78 | #define PACKET_MCN "4a656e734178626f65323030300000" |
79 | |
80 | #undef PACKET_USE_LS |
81 | |
82 | #define PKT_CTRL_CMD_SETUP 0 |
83 | #define PKT_CTRL_CMD_TEARDOWN 1 |
84 | #define PKT_CTRL_CMD_STATUS 2 |
85 | |
86 | struct pkt_ctrl_command { |
87 | __u32 command; /* in: Setup, teardown, status */ |
88 | __u32 dev_index; /* in/out: Device index */ |
89 | __u32 dev; /* in/out: Device nr for cdrw device */ |
90 | __u32 pkt_dev; /* in/out: Device nr for packet device */ |
91 | __u32 num_devices; /* out: Largest device index + 1 */ |
92 | __u32 padding; /* Not used */ |
93 | }; |
94 | |
95 | /* |
96 | * packet ioctls |
97 | */ |
98 | #define PACKET_IOCTL_MAGIC ('X') |
99 | #define PACKET_CTRL_CMD _IOWR(PACKET_IOCTL_MAGIC, 1, struct pkt_ctrl_command) |
100 | |
101 | |
102 | #endif /* _UAPI__PKTCDVD_H */ |
103 | |