include/linux/miscdevice.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_MISCDEVICE_H
   3 #define _LINUX_MISCDEVICE_H
   4 #include <linux/major.h>
   5 #include <linux/list.h>
   6 #include <linux/types.h>
   7 #include <linux/device.h>
   8
   9 /*
  10  *      These allocations are managed by device@lanana.org. If you use an
  11  *      entry that is not in assigned your entry may well be moved and
  12  *      reassigned, or set dynamic if a fixed value is not justified.
  13  */
  14
  15 #define PSMOUSE_MINOR           1
  16 #define MS_BUSMOUSE_MINOR       2       /* unused */
  17 #define ATIXL_BUSMOUSE_MINOR    3       /* unused */
  18 /*#define AMIGAMOUSE_MINOR      4       FIXME OBSOLETE */
  19 #define ATARIMOUSE_MINOR        5       /* unused */
  20 #define SUN_MOUSE_MINOR         6       /* unused */
  21 #define APOLLO_MOUSE_MINOR      7       /* unused */
  22 #define PC110PAD_MINOR          9       /* unused */
  23 /*#define ADB_MOUSE_MINOR       10      FIXME OBSOLETE */
  24 #define WATCHDOG_MINOR          130     /* Watchdog timer     */
  25 #define TEMP_MINOR              131     /* Temperature Sensor */
  26 #define APM_MINOR_DEV           134
  27 #define RTC_MINOR               135
  28 #define EFI_RTC_MINOR           136     /* EFI Time services */
  29 #define VHCI_MINOR              137
  30 #define SUN_OPENPROM_MINOR      139
  31 #define DMAPI_MINOR             140     /* unused */
  32 #define NVRAM_MINOR             144
  33 #define SGI_MMTIMER             153
  34 #define STORE_QUEUE_MINOR       155     /* unused */
  35 #define I2O_MINOR               166
  36 #define HWRNG_MINOR             183
  37 #define MICROCODE_MINOR         184
  38 #define IRNET_MINOR             187
  39 #define VFIO_MINOR              196
  40 #define TUN_MINOR               200
  41 #define CUSE_MINOR              203
  42 #define MWAVE_MINOR             219     /* ACP/Mwave Modem */
  43 #define MPT_MINOR               220
  44 #define MPT2SAS_MINOR           221
  45 #define MPT3SAS_MINOR           222
  46 #define UINPUT_MINOR            223
  47 #define MISC_MCELOG_MINOR       227
  48 #define HPET_MINOR              228
  49 #define FUSE_MINOR              229
  50 #define KVM_MINOR               232
  51 #define BTRFS_MINOR             234
  52 #define AUTOFS_MINOR            235
  53 #define MAPPER_CTRL_MINOR       236
  54 #define LOOP_CTRL_MINOR         237
  55 #define VHOST_NET_MINOR         238
  56 #define UHID_MINOR              239
  57 #define USERIO_MINOR            240
  58 #define VHOST_VSOCK_MINOR       241
  59 #define MISC_DYNAMIC_MINOR      255
  60
  61 struct device;
  62 struct attribute_group;
  63
  64 struct miscdevice  {
  65         int minor;
  66         const char *name;
  67         const struct file_operations *fops;
  68         struct list_head list;
  69         struct device *parent;
  70         struct device *this_device;
  71         const struct attribute_group **groups;
  72         const char *nodename;
  73         umode_t mode;
  74 };
  75
  76 extern int misc_register(struct miscdevice *misc);
  77 extern void misc_deregister(struct miscdevice *misc);
  78
  79 /*
  80  * Helper macro for drivers that don't do anything special in the initcall.
  81  * This helps in eleminating of boilerplate code.
  82  */
  83 #define builtin_misc_device(__misc_device) \
  84         builtin_driver(__misc_device, misc_register)
  85
  86 /*
  87  * Helper macro for drivers that don't do anything special in module init / exit
  88  * call. This helps in eleminating of boilerplate code.
  89  */
  90 #define module_misc_device(__misc_device) \
  91         module_driver(__misc_device, misc_register, misc_deregister)
  92
  93 #define MODULE_ALIAS_MISCDEV(minor)                             \
  94         MODULE_ALIAS("char-major-" __stringify(MISC_MAJOR)      \
  95         "-" __stringify(minor))
  96 #endif