include/uapi/linux/pktcdvd.h

   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 */