/* * $Id: byteblaster.c,v 1.6 2003/05/28 20:02:19 telka Exp $ * * Altera ByteBlaster/ByteBlaster II/ByteBlasterMV Parallel Port Download Cable Driver * Copyright (C) 2002, 2003 ETC s.r.o. * * 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., 59 Temple Place - Suite 330, Boston, MA * 02111-1307, USA. * * Written by Marcel Telka <marcel@telka.sk>, 2002, 2003. * * Documentation: * [1] Altera Corporation, "ByteBlaster Parallel Port Download Cable Data Sheet", *     February 1998, ver. 2.01, Order Number: A-DS-BYTE-02.01 * [2] Altera Corporation, "ByteBlasterMV Parallel Port Download Cable Data Sheet", *     July 2002, Version 3.3, Order Number: DS-BYTBLMV-3.3 * [3] Altera Corporation, "ByteBlaster II Parallel Port Download Cable Data Sheet", *     December 2002, Version 1.0, Order Number: DS-BYTEBLSTRII-1.0 L01-08739-00 * */#include <config.h>#include "cable.h"#include "parport.h"#include "chain.h"#include "generic.h"/* * data D[7:0] (pins 9:2) */#define	TDI	6#define	TCK	0#define	TMS	1/* * 7 - BUSY (pin 11) * 6 - ACK (pin 10) * 5 - PE (pin 12) * 4 - SEL (pin 13) * 3 - ERROR (pin 15) */#define	TDO	7static intbyteblaster_init( cable_t *cable ){	if (parport_open( cable->port ))		return -1;	PARAM_TRST(cable) = 1;	return 0;}static voidbyteblaster_clock( cable_t *cable, int tms, int tdi ){	tms = tms ? 1 : 0;	tdi = tdi ? 1 : 0;	parport_set_data( cable->port, (0 << TCK) | (tms << TMS) | (tdi << TDI) );	cable_wait();	parport_set_data( cable->port, (1 << TCK) | (tms << TMS) | (tdi << TDI) );	cable_wait();}static intbyteblaster_get_tdo( cable_t *cable ){	parport_set_data( cable->port, 0 << TCK );	cable_wait();	return (parport_get_status( cable->port ) >> TDO) & 1;}static intbyteblaster_set_trst( cable_t *cable, int trst ){	return 1;}cable_driver_t byteblaster_cable_driver = {	"ByteBlaster",	N_("Altera ByteBlaster/ByteBlaster II/ByteBlasterMV Parallel Port Download Cable"),	generic_connect,	generic_disconnect,	generic_cable_free,	byteblaster_init,	generic_done,	byteblaster_clock,	byteblaster_get_tdo,	byteblaster_set_trst,	generic_get_trst};