projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| 607ca46e DH |
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 | * use drive write caching -- we need deferred error handling to be | |
| 34 | * able to successfully recover with this option (drive will return good | |
| 35 | * status as soon as the cdb is validated). | |
| 36 | */ | |
| 37 | #if defined(CONFIG_CDROM_PKTCDVD_WCACHE) | |
| 38 | #define USE_WCACHING 1 | |
| 39 | #else | |
| 40 | #define USE_WCACHING 0 | |
| 41 | #endif | |
| 42 | ||
| 43 | /* | |
| 44 | * No user-servicable parts beyond this point -> | |
| 45 | */ | |
| 46 | ||
| 47 | /* | |
| 48 | * device types | |
| 49 | */ | |
| 50 | #define PACKET_CDR 1 | |
| 51 | #define PACKET_CDRW 2 | |
| 52 | #define PACKET_DVDR 3 | |
| 53 | #define PACKET_DVDRW 4 | |
| 54 | ||
| 55 | /* | |
| 56 | * flags | |
| 57 | */ | |
| 58 | #define PACKET_WRITABLE 1 /* pd is writable */ | |
| 59 | #define PACKET_NWA_VALID 2 /* next writable address valid */ | |
| 60 | #define PACKET_LRA_VALID 3 /* last recorded address valid */ | |
| 61 | #define PACKET_MERGE_SEGS 4 /* perform segment merging to keep */ | |
| 62 | /* underlying cdrom device happy */ | |
| 63 | ||
| 64 | /* | |
| 65 | * Disc status -- from READ_DISC_INFO | |
| 66 | */ | |
| 67 | #define PACKET_DISC_EMPTY 0 | |
| 68 | #define PACKET_DISC_INCOMPLETE 1 | |
| 69 | #define PACKET_DISC_COMPLETE 2 | |
| 70 | #define PACKET_DISC_OTHER 3 | |
| 71 | ||
| 72 | /* | |
| 73 | * write type, and corresponding data block type | |
| 74 | */ | |
| 75 | #define PACKET_MODE1 1 | |
| 76 | #define PACKET_MODE2 2 | |
| 77 | #define PACKET_BLOCK_MODE1 8 | |
| 78 | #define PACKET_BLOCK_MODE2 10 | |
| 79 | ||
| 80 | /* | |
| 81 | * Last session/border status | |
| 82 | */ | |
| 83 | #define PACKET_SESSION_EMPTY 0 | |
| 84 | #define PACKET_SESSION_INCOMPLETE 1 | |
| 85 | #define PACKET_SESSION_RESERVED 2 | |
| 86 | #define PACKET_SESSION_COMPLETE 3 | |
| 87 | ||
| 88 | #define PACKET_MCN "4a656e734178626f65323030300000" | |
| 89 | ||
| 90 | #undef PACKET_USE_LS | |
| 91 | ||
| 92 | #define PKT_CTRL_CMD_SETUP 0 | |
| 93 | #define PKT_CTRL_CMD_TEARDOWN 1 | |
| 94 | #define PKT_CTRL_CMD_STATUS 2 | |
| 95 | ||
| 96 | struct pkt_ctrl_command { | |
| 97 | __u32 command; /* in: Setup, teardown, status */ | |
| 98 | __u32 dev_index; /* in/out: Device index */ | |
| 99 | __u32 dev; /* in/out: Device nr for cdrw device */ | |
| 100 | __u32 pkt_dev; /* in/out: Device nr for packet device */ | |
| 101 | __u32 num_devices; /* out: Largest device index + 1 */ | |
| 102 | __u32 padding; /* Not used */ | |
| 103 | }; | |
| 104 | ||
| 105 | /* | |
| 106 | * packet ioctls | |
| 107 | */ | |
| 108 | #define PACKET_IOCTL_MAGIC ('X') | |
| 109 | #define PACKET_CTRL_CMD _IOWR(PACKET_IOCTL_MAGIC, 1, struct pkt_ctrl_command) | |
| 110 | ||
| 111 | ||
| 112 | #endif /* _UAPI__PKTCDVD_H */ |