core/include/disk.h

   1 #ifndef DISK_H
   2 #define DISK_H
   3
   4 #include <stddef.h>
   5 #include <stdint.h>
   6 #include <stdbool.h>
   7 #include <core.h>
   8
   9 typedef uint64_t sector_t;
  10 typedef uint64_t block_t;
  11
  12 struct bios_disk_private {
  13         com32sys_t *regs;
  14 };
  15
  16 /*
  17  * struct disk: contains the information about a specific disk and also
  18  * contains the I/O function.
  19  */
  20 struct disk {
  21     void *private;      /* Firmware-private disk info */
  22     unsigned int disk_number;   /* in BIOS style */
  23     unsigned int sector_size;   /* gener512B or 2048B */
  24     unsigned int sector_shift;
  25     unsigned int maxtransfer;   /* Max sectors per transfer */
  26
  27     unsigned int h, s;          /* CHS geometry */
  28     unsigned int secpercyl;     /* h*s */
  29     unsigned int _pad;
  30
  31     sector_t part_start;   /* the start address of this partition(in sectors) */
  32
  33     int (*rdwr_sectors)(struct disk *, void *, sector_t, size_t, bool);
  34 };
  35
  36 extern void read_sectors(char *, sector_t, int);
  37 extern void getoneblk(struct disk *, char *, block_t, int);
  38
  39 /* diskio.c */
  40 struct disk *bios_disk_init(void *);
  41 struct device *device_init(void *);
  42
  43 #endif /* DISK_H */