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
   8 typedef uint64_t sector_t;
   9 typedef uint64_t block_t;
  10
  11 /*
  12  * struct disk: contains the information about a specific disk and also
  13  * contains the I/O function.
  14  */
  15 struct disk {
  16     unsigned int disk_number;   /* in BIOS style */
  17     unsigned int sector_size;   /* gener512B or 2048B */
  18     unsigned int sector_shift;
  19     unsigned int maxtransfer;   /* Max sectors per transfer */
  20
  21     unsigned int h, s;          /* CHS geometry */
  22     unsigned int secpercyl;     /* h*s */
  23     unsigned int _pad;
  24
  25     sector_t part_start;   /* the start address of this partition(in sectors) */
  26
  27     int (*rdwr_sectors)(struct disk *, void *, sector_t, size_t, bool);
  28 };
  29
  30 extern void read_sectors(char *, sector_t, int);
  31 extern void getoneblk(struct disk *, char *, block_t, int);
  32
  33 /* diskio.c */
  34 struct disk *disk_init(uint8_t, bool, sector_t, uint16_t, uint16_t, uint32_t);
  35 struct device *device_init(uint8_t, bool, sector_t, uint16_t, uint16_t, uint32_t);
  36
  37 #endif /* DISK_H */