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112 lines
2.6 KiB
112 lines
2.6 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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/* |
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* Copyright (C) 2000 Jens Axboe <[email protected]> |
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* Copyright (C) 2001-2004 Peter Osterlund <[email protected]> |
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* |
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* May be copied or modified under the terms of the GNU General Public |
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* License. See linux/COPYING for more information. |
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* |
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* Packet writing layer for ATAPI and SCSI CD-R, CD-RW, DVD-R, and |
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* DVD-RW devices. |
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* |
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*/ |
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#ifndef _UAPI__PKTCDVD_H |
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#define _UAPI__PKTCDVD_H |
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#include <linux/types.h> |
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/* |
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* 1 for normal debug messages, 2 is very verbose. 0 to turn it off. |
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*/ |
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#define PACKET_DEBUG 1 |
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#define MAX_WRITERS 8 |
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#define PKT_RB_POOL_SIZE 512 |
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/* |
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* How long we should hold a non-full packet before starting data gathering. |
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*/ |
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#define PACKET_WAIT_TIME (HZ * 5 / 1000) |
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/* |
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* use drive write caching -- we need deferred error handling to be |
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* able to successfully recover with this option (drive will return good |
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* status as soon as the cdb is validated). |
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*/ |
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#if defined(CONFIG_CDROM_PKTCDVD_WCACHE) |
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#define USE_WCACHING 1 |
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#else |
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#define USE_WCACHING 0 |
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#endif |
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/* |
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* No user-servicable parts beyond this point -> |
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*/ |
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/* |
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* device types |
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*/ |
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#define PACKET_CDR 1 |
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#define PACKET_CDRW 2 |
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#define PACKET_DVDR 3 |
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#define PACKET_DVDRW 4 |
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/* |
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* flags |
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*/ |
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#define PACKET_WRITABLE 1 /* pd is writable */ |
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#define PACKET_NWA_VALID 2 /* next writable address valid */ |
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#define PACKET_LRA_VALID 3 /* last recorded address valid */ |
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#define PACKET_MERGE_SEGS 4 /* perform segment merging to keep */ |
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/* underlying cdrom device happy */ |
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/* |
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* Disc status -- from READ_DISC_INFO |
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*/ |
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#define PACKET_DISC_EMPTY 0 |
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#define PACKET_DISC_INCOMPLETE 1 |
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#define PACKET_DISC_COMPLETE 2 |
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#define PACKET_DISC_OTHER 3 |
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/* |
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* write type, and corresponding data block type |
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*/ |
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#define PACKET_MODE1 1 |
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#define PACKET_MODE2 2 |
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#define PACKET_BLOCK_MODE1 8 |
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#define PACKET_BLOCK_MODE2 10 |
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/* |
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* Last session/border status |
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*/ |
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#define PACKET_SESSION_EMPTY 0 |
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#define PACKET_SESSION_INCOMPLETE 1 |
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#define PACKET_SESSION_RESERVED 2 |
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#define PACKET_SESSION_COMPLETE 3 |
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#define PACKET_MCN "4a656e734178626f65323030300000" |
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#undef PACKET_USE_LS |
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#define PKT_CTRL_CMD_SETUP 0 |
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#define PKT_CTRL_CMD_TEARDOWN 1 |
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#define PKT_CTRL_CMD_STATUS 2 |
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struct pkt_ctrl_command { |
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__u32 command; /* in: Setup, teardown, status */ |
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__u32 dev_index; /* in/out: Device index */ |
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__u32 dev; /* in/out: Device nr for cdrw device */ |
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__u32 pkt_dev; /* in/out: Device nr for packet device */ |
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__u32 num_devices; /* out: Largest device index + 1 */ |
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__u32 padding; /* Not used */ |
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}; |
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/* |
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* packet ioctls |
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*/ |
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#define PACKET_IOCTL_MAGIC ('X') |
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#define PACKET_CTRL_CMD _IOWR(PACKET_IOCTL_MAGIC, 1, struct pkt_ctrl_command) |
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#endif /* _UAPI__PKTCDVD_H */
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