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 */ 44
