include/linux/major.h

   1 #ifndef _LINUX_MAJOR_H
   2 #define _LINUX_MAJOR_H
   3
   4 /*
   5  * This file has definitions for major device numbers.
   6  * For the device number assignments, see Documentation/devices.txt.
   7  */
   8
   9 /* limits */
  10
  11 /*
  12  * Important: Don't change this to 256.  Major number 255 is and must be
  13  * reserved for future expansion into a larger dev_t space.
  14  */
  15 #define MAX_CHRDEV      255
  16 #define MAX_BLKDEV      255
  17
  18 #define UNNAMED_MAJOR   0
  19 #define MEM_MAJOR       1
  20 #define RAMDISK_MAJOR   1
  21 #define FLOPPY_MAJOR    2
  22 #define PTY_MASTER_MAJOR 2
  23 #define IDE0_MAJOR      3
  24 #define PTY_SLAVE_MAJOR 3
  25 #define HD_MAJOR        IDE0_MAJOR
  26 #define TTY_MAJOR       4
  27 #define TTYAUX_MAJOR    5
  28 #define LP_MAJOR        6
  29 #define VCS_MAJOR       7
  30 #define LOOP_MAJOR      7
  31 #define SCSI_DISK0_MAJOR 8
  32 #define SCSI_TAPE_MAJOR 9
  33 #define MD_MAJOR        9
  34 #define MISC_MAJOR      10
  35 #define SCSI_CDROM_MAJOR 11
  36 #define QIC02_TAPE_MAJOR 12
  37 #define XT_DISK_MAJOR   13
  38 #define SOUND_MAJOR     14
  39 #define CDU31A_CDROM_MAJOR 15
  40 #define JOYSTICK_MAJOR  15
  41 #define GOLDSTAR_CDROM_MAJOR 16
  42 #define OPTICS_CDROM_MAJOR 17
  43 #define SANYO_CDROM_MAJOR 18
  44 #define CYCLADES_MAJOR  19
  45 #define CYCLADESAUX_MAJOR 20
  46 #define MITSUMI_X_CDROM_MAJOR 20
  47 #define MFM_ACORN_MAJOR 21      /* ARM Linux /dev/mfm */
  48 #define SCSI_GENERIC_MAJOR 21
  49 #define Z8530_MAJOR 34
  50 #define DIGI_MAJOR 23
  51 #define IDE1_MAJOR      22
  52 #define DIGICU_MAJOR 22
  53 #define MITSUMI_CDROM_MAJOR 23
  54 #define CDU535_CDROM_MAJOR 24
  55 #define STL_SERIALMAJOR 24
  56 #define MATSUSHITA_CDROM_MAJOR 25
  57 #define STL_CALLOUTMAJOR 25
  58 #define MATSUSHITA_CDROM2_MAJOR 26
  59 #define QIC117_TAPE_MAJOR 27
  60 #define MATSUSHITA_CDROM3_MAJOR 27
  61 #define MATSUSHITA_CDROM4_MAJOR 28
  62 #define STL_SIOMEMMAJOR 28
  63 #define ACSI_MAJOR      28
  64 #define AZTECH_CDROM_MAJOR 29
  65 #define GRAPHDEV_MAJOR  29      /* SparcLinux & Linux/68k /dev/fb */
  66 #define CM206_CDROM_MAJOR 32
  67 #define IDE2_MAJOR      33
  68 #define IDE3_MAJOR      34
  69 #define NETLINK_MAJOR   36
  70 #define PS2ESDI_MAJOR   36
  71 #define IDETAPE_MAJOR   37
  72 #define Z2RAM_MAJOR     37
  73 #define APBLOCK_MAJOR   38   /* AP1000 Block device */
  74 #define DDV_MAJOR       39   /* AP1000 DDV block device */
  75 #define NBD_MAJOR       43   /* Network block device    */
  76 #define RISCOM8_NORMAL_MAJOR 48
  77 #define RISCOM8_CALLOUT_MAJOR 49
  78 #define MKISS_MAJOR     55
  79 #define DSP56K_MAJOR    55   /* DSP56001 processor device */
  80
  81 #define IDE4_MAJOR      56
  82 #define IDE5_MAJOR      57
  83
  84 #define SCSI_DISK1_MAJOR        65
  85 #define SCSI_DISK2_MAJOR        66
  86 #define SCSI_DISK3_MAJOR        67
  87 #define SCSI_DISK4_MAJOR        68
  88 #define SCSI_DISK5_MAJOR        69
  89 #define SCSI_DISK6_MAJOR        70
  90 #define SCSI_DISK7_MAJOR        71
  91
  92
  93 #define SPECIALIX_NORMAL_MAJOR 75
  94 #define SPECIALIX_CALLOUT_MAJOR 76
  95
  96 #define I2O_MAJOR               80      /* 80->87 */
  97
  98 #define IDE6_MAJOR      88
  99 #define IDE7_MAJOR      89
 100
 101 #define AURORA_MAJOR 79
 102
 103 #define UNIX98_PTY_MASTER_MAJOR 128
 104 #define UNIX98_PTY_MAJOR_COUNT  8
 105 #define UNIX98_PTY_SLAVE_MAJOR  (UNIX98_PTY_MASTER_MAJOR+UNIX98_PTY_MAJOR_COUNT)
 106
 107 /*
 108  * Tests for SCSI devices.
 109  */
 110
 111 #define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
 112   ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR))
 113
 114 #define SCSI_BLK_MAJOR(M) \
 115   (SCSI_DISK_MAJOR(M)   \
 116    || (M) == SCSI_CDROM_MAJOR)
 117
 118 static __inline__ int scsi_blk_major(int m) {
 119         return SCSI_BLK_MAJOR(m);
 120 }
 121
 122 #endif