DiskInterface.h

00001 // DiskInterface.h 2013/9/21
00002 #pragma once
00003 
00004 class DiskInterface {
00005 public:
00006     /*
00007     * read a block on a storage chip
00008     *
00009     * @param data pointer where will be stored read data
00010     * @param block block number
00011     * @returns 0 if successful
00012     */
00013     virtual int disk_read(uint8_t * data, uint64_t block) = 0;
00014 
00015     /*
00016     * write a block on a storage chip
00017     *
00018     * @param data data to write
00019     * @param block block number
00020     * @returns 0 if successful
00021     */
00022     virtual int disk_write(const uint8_t * data, uint64_t block) = 0;
00023 
00024     /*
00025     * Disk initilization
00026     */
00027     virtual int disk_initialize() = 0;
00028 
00029     /*
00030     * Return the number of blocks
00031     *
00032     * @returns number of blocks
00033     */
00034     virtual uint64_t disk_sectors() = 0;
00035 
00036     /*
00037     * Return memory size
00038     *
00039     * @returns memory size
00040     */
00041     virtual uint64_t disk_size() = 0;
00042 
00043     /*
00044     * To check the status of the storage chip
00045     *
00046     * @returns status: 0: OK, 1: disk not initialized, 2: no medium in the drive, 4: write protected
00047     */
00048     virtual int disk_status() = 0;
00049 };