| /* |
| * 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 __PKTCDVD_H |
| #define __PKTCDVD_H |
| |
| #include <linux/types.h> |
| |
| /* |
| * 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) |
| |
| /* |
| * use drive write caching -- we need deferred error handling to be |
| * able to successfully recover with this option (drive will return good |
| * status as soon as the cdb is validated). |
| */ |
| #if defined(CONFIG_CDROM_PKTCDVD_WCACHE) |
| #define USE_WCACHING 1 |
| #else |
| #define USE_WCACHING 0 |
| #endif |
| |
| /* |
| * 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 /* __PKTCDVD_H */ |
