cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pktcdvd.h (2702B)

      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 * 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
     96struct 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 */