core/fs/diskio.c

   1 #include <dprintf.h>
   2 #include <stdio.h>
   3 #include <string.h>
   4 #include <stdbool.h>
   5 #include <klibc/compiler.h>
   6 #include <core.h>
   7 #include <fs.h>
   8 #include <disk.h>
   9 #include <ilog2.h>
  10 #include <minmax.h>
  11
  12 #include <syslinux/firmware.h>
  13
  14 void getoneblk(struct disk *disk, char *buf, block_t block, int block_size)
  15 {
  16     int sec_per_block = block_size / disk->sector_size;
  17
  18     disk->rdwr_sectors(disk, buf, block * sec_per_block, sec_per_block, 0);
  19 }
  20
  21 /*
  22  * Initialize the device structure.
  23  */
  24 struct device * device_init(void *args)
  25 {
  26     static struct device dev;
  27
  28     dev.disk = firmware->disk_init(args);
  29     dev.cache_size = 128*1024;
  30     dev.cache_data = malloc(dev.cache_size);
  31     dev.cache_init = 0; /* Explicitly set cache as uninitialized */
  32
  33     return &dev;
  34 }