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