src/arch/i386/include/bios_disks.h

   1 #ifndef BIOS_DISKS_H
   2 #define BIOS_DISKS_H
   3
   4 #include "dev.h"
   5
   6 /*
   7  * Constants
   8  *
   9  */
  10
  11 #define BIOS_DISK_MAX_NAME_LEN  6
  12
  13 struct bios_disk_sector {
  14         char data[512];
  15 };
  16
  17 /*
  18  * The location of a BIOS disk
  19  *
  20  */
  21 struct bios_disk_loc {
  22         uint8_t drive;
  23 };
  24
  25 /*
  26  * A physical BIOS disk device
  27  *
  28  */
  29 struct bios_disk_device {
  30         char name[BIOS_DISK_MAX_NAME_LEN];
  31         uint8_t drive;
  32         uint8_t type;
  33 };
  34
  35 /*
  36  * A BIOS disk driver, with a valid device ID range and naming
  37  * function.
  38  *
  39  */
  40 struct bios_disk_driver {
  41         void ( *fill_drive_name ) ( char *buf, uint8_t drive );
  42         uint8_t min_drive;
  43         uint8_t max_drive;
  44 };
  45
  46 /*
  47  * Define a BIOS disk driver
  48  *
  49  */
  50 #define BIOS_DISK_DRIVER( _name, _fill_drive_name, _min_drive, _max_drive )   \
  51         static struct bios_disk_driver _name = {                              \
  52                 .fill_drive_name = _fill_drive_name,                          \
  53                 .min_drive = _min_drive,                                      \
  54                 .max_drive = _max_drive,                                      \
  55         }
  56
  57 /*
  58  * Functions in bios_disks.c
  59  *
  60  */
  61
  62
  63 /*
  64  * bios_disk bus global definition
  65  *
  66  */
  67 extern struct bus_driver bios_disk_driver;
  68
  69 #endif /* BIOS_DISKS_H */