libfriidump/vanilla_2064.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Arep                                            *
   3  *   Support is provided through the forums at                             *
   4  *   http://wii.console-tribe.com                                          *
   5  *                                                                         *
   6  *   This program is free software; you can redistribute it and/or modify  *
   7  *   it under the terms of the GNU General Public License as published by  *
   8  *   the Free Software Foundation; either version 2 of the License, or     *
   9  *   (at your option) any later version.                                   *
  10  *                                                                         *
  11  *   This program is distributed in the hope that it will be useful,       *
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  14  *   GNU General Public License for more details.                          *
  15  *                                                                         *
  16  *   You should have received a copy of the GNU General Public License     *
  17  *   along with this program; if not, write to the                         *
  18  *   Free Software Foundation, Inc.,                                       *
  19  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  20  ***************************************************************************/
  21
  22 //#include "rs.h"
  23 #include <stdio.h>
  24 #include <sys/types.h>
  25 #include "misc.h"
  26 #include "dvd_drive.h"
  27
  28 /**
  29  * Command found in Lite-On LH-18A1H
  30  * Expected to work with: DH*, DW*, LH*, SH* series
  31  * Possibly would work with other Mediatek based drives:
  32  * Samsung SE*, SH* series
  33  * Some Dell drives
  34  * Some Sony drives
  35  * Asus DRW-1814* (DRW* series?)
  36  */
  37
  38
  39 /**
  40  * @param dvd The DVD drive the command should be exectued on.
  41  * @param offset The absolute memory offset to start dumping.
  42  * @param block_size The block size for the dump.
  43  * @param buf Where to place the dumped data. This must have been setup by the caller to store up to block_size bytes.
  44  * @return < 0 if an error occurred, 0 otherwise.
  45  */
  46 int vanilla_2064_dvd_dump_memblock (dvd_drive *dvd, u_int32_t offset, u_int32_t block_size, u_int8_t *buf) {
  47         mmc_command mmc;
  48         int out;
  49
  50         u_int32_t src_offset;
  51         u_int32_t sec_nr;
  52         u_int32_t sec_cnt;
  53         u_int32_t first_sec_nr;
  54
  55         if (!buf) {
  56                 error ("NULL buffer");
  57                 out = -1;
  58         } else if (!block_size || block_size > 65535) {
  59                 error ("invalid block_size (valid: 1 - 65535)");
  60                 out = -2;
  61         } else {
  62                 dvd_init_command (&mmc, buf, block_size, NULL);
  63                 mmc.cmd[0] = 0x3C;
  64                 mmc.cmd[1] = 0x02;
  65                 mmc.cmd[2] = 0x00;
  66                 mmc.cmd[3]  = (unsigned char) ((offset & 0x00FF0000) >> 16);    // address MSB
  67                 mmc.cmd[4]  = (unsigned char) ((offset & 0x0000FF00) >> 8);     // address
  68                 mmc.cmd[5]  = (unsigned char) ( offset & 0x000000FF);           // address LSB
  69                 mmc.cmd[6]  = (unsigned char) ((block_size & 0x00FF0000) >> 16);// length  MSB
  70                 mmc.cmd[7]  = (unsigned char) ((block_size & 0x0000FF00) >> 8); // length
  71                 mmc.cmd[8]  = (unsigned char) ( block_size & 0x000000FF);       // length  LSB
  72
  73                 out = dvd_execute_cmd (dvd, &mmc, false);
  74
  75                 src_offset   = 0;
  76                 first_sec_nr = 0x55555555;
  77                 sec_cnt      = 0;
  78                 while (src_offset < block_size) {
  79                         sec_nr=(*(buf+src_offset+1)<<16)+(*(buf+src_offset+2)<<8)+(*(buf+src_offset+3));
  80                         if (first_sec_nr==0x55555555) {
  81                                 first_sec_nr=sec_nr;
  82                         }
  83                         else
  84                                 if (sec_nr!=first_sec_nr+sec_cnt) {
  85                                         error ("sector sequence broken");
  86                                         out = -3;
  87                                         *(buf+src_offset+0)=0xff;
  88                                         *(buf+src_offset+1)=0xff;
  89                                         *(buf+src_offset+2)=0xff;
  90                                         *(buf+src_offset+3)=0xff;
  91                                         break;
  92                                 }
  93                         src_offset += 2064;
  94                         sec_cnt += 1;
  95                 }
  96         }
  97
  98         return (out);
  99 }
 100
 101
 102
 103 /**
 104  * WARNING: it can take a while to dump a lot of data.
 105  * @param dvd The DVD drive the command should be exectued on.
 106  * @param offset The memory offset to start dumping, relative to the cache start offset.
 107  * @param block_len The number of blocks to dump.
 108  * @param block_size The block size for the dump.
 109  * @param buf Where to place the dumped data. This must have been setup by the caller to store up to block_size bytes.
 110  * @return < 0 if an error occurred, 0 otherwise.
 111  */
 112 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) {
 113         u_int32_t i;
 114         int r, out;
 115
 116         if (!buf) {
 117                 error ("NULL buffer");
 118                 out = -1;
 119         } else {
 120                 r = -10;
 121                 for (i = 0; i < block_len; i++) {
 122                         if ((r = vanilla_2064_dvd_dump_memblock (dvd, offset + i * block_size, block_size, buf + i * block_size)) < 0) {
 123                                 error ("vanilla_2064_dvd_dump_memblock() failed with %d", r);
 124                                 break;
 125                         }
 126                 }
 127                 out = r;
 128         }
 129
 130         return (out);
 131 }