131 lines
4.7 KiB
C
131 lines
4.7 KiB
C
/***************************************************************************
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* Copyright (C) 2007 by Arep *
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* Support is provided through the forums at *
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* http://wii.console-tribe.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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//#include "rs.h"
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#include <stdio.h>
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#include <sys/types.h>
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#include "misc.h"
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#include "dvd_drive.h"
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/**
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* Command found in Lite-On LH-18A1H
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* Expected to work with: DH*, DW*, LH*, SH* series
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* Possibly would work with other Mediatek based drives:
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* Samsung SE*, SH* series
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* Some Dell drives
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* Some Sony drives
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* Asus DRW-1814* (DRW* series?)
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*/
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/**
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* @param dvd The DVD drive the command should be exectued on.
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* @param offset The absolute memory offset to start dumping.
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* @param block_size The block size for the dump.
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* @param buf Where to place the dumped data. This must have been setup by the caller to store up to block_size bytes.
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* @return < 0 if an error occurred, 0 otherwise.
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*/
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int vanilla_2064_dvd_dump_memblock (dvd_drive *dvd, u_int32_t offset, u_int32_t block_size, u_int8_t *buf) {
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mmc_command mmc;
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int out;
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u_int32_t src_offset;
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u_int32_t sec_nr;
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u_int32_t sec_cnt;
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u_int32_t first_sec_nr;
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if (!buf) {
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error ("NULL buffer");
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out = -1;
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} else if (!block_size || block_size > 65535) {
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error ("invalid block_size (valid: 1 - 65535)");
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out = -2;
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} else {
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dvd_init_command (&mmc, buf, block_size, NULL);
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mmc.cmd[0] = 0x3C;
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mmc.cmd[1] = 0x02;
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mmc.cmd[2] = 0x00;
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mmc.cmd[3] = (unsigned char) ((offset & 0x00FF0000) >> 16); // address MSB
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mmc.cmd[4] = (unsigned char) ((offset & 0x0000FF00) >> 8); // address
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mmc.cmd[5] = (unsigned char) ( offset & 0x000000FF); // address LSB
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mmc.cmd[6] = (unsigned char) ((block_size & 0x00FF0000) >> 16);// length MSB
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mmc.cmd[7] = (unsigned char) ((block_size & 0x0000FF00) >> 8); // length
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mmc.cmd[8] = (unsigned char) ( block_size & 0x000000FF); // length LSB
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out = dvd_execute_cmd (dvd, &mmc, false);
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src_offset = 0;
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first_sec_nr = 0x55555555;
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sec_cnt = 0;
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while (src_offset < block_size) {
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sec_nr=(*(buf+src_offset+1)<<16)+(*(buf+src_offset+2)<<8)+(*(buf+src_offset+3));
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if (first_sec_nr==0x55555555) {
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first_sec_nr=sec_nr;
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}
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else
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if (sec_nr!=first_sec_nr+sec_cnt) {
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error ("sector sequence broken");
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out = -3;
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*(buf+src_offset+0)=0xff;
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*(buf+src_offset+1)=0xff;
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*(buf+src_offset+2)=0xff;
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*(buf+src_offset+3)=0xff;
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break;
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}
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src_offset += 2064;
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sec_cnt += 1;
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}
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}
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return (out);
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}
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/**
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* WARNING: it can take a while to dump a lot of data.
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* @param dvd The DVD drive the command should be exectued on.
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* @param offset The memory offset to start dumping, relative to the cache start offset.
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* @param block_len The number of blocks to dump.
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* @param block_size The block size for the dump.
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* @param buf Where to place the dumped data. This must have been setup by the caller to store up to block_size bytes.
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* @return < 0 if an error occurred, 0 otherwise.
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*/
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int vanilla_2064_dvd_dump_mem (dvd_drive *dvd, u_int32_t offset, u_int32_t block_len, u_int32_t block_size, u_int8_t *buf) {
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u_int32_t i;
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int r, out;
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if (!buf) {
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error ("NULL buffer");
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out = -1;
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} else {
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r = -10;
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for (i = 0; i < block_len; i++) {
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if ((r = vanilla_2064_dvd_dump_memblock (dvd, offset + i * block_size, block_size, buf + i * block_size)) < 0) {
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error ("vanilla_2064_dvd_dump_memblock() failed with %d", r);
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break;
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}
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}
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out = r;
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}
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return (out);
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}
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