/* cdrdao - write audio CD-Rs in disc-at-once mode
*
* Copyright (C) 1999 Andreas Mueller <mueller@daneb.ping.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* $Log: ScsiIf-common.cc,v $
* Revision 1.4 2007/12/29 12:26:33 poolshark
* Complete rewrite of native Linux SG driver for SG 3.0 using SG_IO ioctl. Code cleanup
*
* Revision 1.3 2004/04/13 01:23:44 poolshark
* Cleanup of scglib selection. Fixed without-scglib option. Default build of scsilib was problematic on older systems
*
* Revision 1.2 2004/03/23 18:46:07 poolshark
* MMC autodetect mode
*
* Revision 1.1.1.1 2000/02/05 01:36:55 llanero
* Uploaded cdrdao 1.1.3 with pre10 patch applied.
*
*/
// checks if unit is ready
// return: 0: OK, ready
// 1: not ready (busy)
// 2: not ready, no disk in drive
// 3: scsi command failed
int ScsiIf::testUnitReady()
{
unsigned char cmd[6];
const unsigned char *senseData;
int senseLen;
int ret = 0;
memset(cmd, 0, 6);
switch (sendCmd(cmd, 6, NULL, 0, NULL, 0, 0)) {
case 1:
ret = 3;
break;
case 2:
senseData = getSense(senseLen);
switch (senseData[2] & 0x0f) {
case 0x02: // Not ready
switch (senseData[12]) {
case 0x3a: // medium not present
ret = 2;
break;
default:
ret = 1;
break;
}
break;
case 0x06: // Unit attention
ret = 0;
break;
default:
ret = 3;
break;
}
}
return ret;
}
typedef struct {
unsigned char p_len;
unsigned cd_r_read : 1;
unsigned cd_rw_read : 1;
unsigned method2 : 1;
unsigned dvd_rom_read : 1;
unsigned dvd_r_read : 1;
unsigned dvd_ram_read : 1;
unsigned res_2_67 : 2;
unsigned cd_r_write : 1;
unsigned cd_rw_write : 1;
unsigned test_write : 1;
unsigned res_3_3 : 1;
unsigned dvd_r_write : 1;
unsigned dvd_ram_write : 1;
unsigned res_3_67 : 2;
} cd_page_2a;
bool ScsiIf::checkMmc(bool *cd_r_read, bool *cd_r_write,
bool *cd_rw_read, bool *cd_rw_write)
{
static const int MODE_SENSE_G1_CMD = 0x5a;
static const int MODE_MAX_SIZE = 256;
static const int MODE_PAGE_HEADER_SIZE = 8;
static const int MODE_CD_CAP_PAGE = 0x2a;
unsigned char mode[MODE_MAX_SIZE];
memset(mode, 0, sizeof(mode));
// First, read header of mode page 0x2A, to figure out its exact
// length. For this, we issue a MODE_SENSE (10) command with a
// data length of 8, just the size of the mode header.
unsigned char cmd[10];
memset(&cmd, 0, sizeof(cmd));
cmd[0] = MODE_SENSE_G1_CMD; // MODE SENSE(10)
cmd[2] = MODE_CD_CAP_PAGE;
cmd[8] = MODE_PAGE_HEADER_SIZE;
if (sendCmd((unsigned char*)&cmd, 10, NULL, 0, mode,
MODE_PAGE_HEADER_SIZE) != 0) {
return false;
}
int len = ((mode[0] << 8) + mode[1]) + 2; // +2 is for address field
if (len > MODE_MAX_SIZE) len = MODE_MAX_SIZE;
// Now we have the length of page 0x2a, read the whole page.
memset(mode, 0, MODE_PAGE_HEADER_SIZE);
memset(&cmd, 0, sizeof(cmd));
cmd[0] = MODE_SENSE_G1_CMD; // MODE SENSE(10)
cmd[2] = MODE_CD_CAP_PAGE;
cmd[8] = len;
if (sendCmd((unsigned char*)&cmd, 10, NULL, 0, mode, len) != 0) {
return false;
}
cd_page_2a *p2a = (cd_page_2a*)(mode + 9);
*cd_r_read = p2a->cd_r_read;
*cd_r_write = p2a->cd_r_write;
*cd_rw_read = p2a->cd_rw_read;
*cd_rw_write = p2a->cd_rw_write;
return true;
}