/* * $Id: byteblaster.c,v 1.8 2003/08/22 22:42:02 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 "sysdep.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#define	BB_CHECK	5/* * 7 - BUSY (pin 11) * 6 - ACK (pin 10) * 5 - PE (pin 12) * 4 - SEL (pin 13) * 3 - ERROR (pin 15) */#define	TDO	7#define	BB_PRESENT	6#define	VCC_OK_N	3/* * 0 - STROBE (pin 1) * 1 - AUTOFD (pin 14) * 2 - INIT (pin 16) * 3 - SELECT (pin 17)*/#define	BB_ENABLE	0xCstatic intbyteblaster_init( cable_t *cable ){	int BB_II = 0;	if (parport_open( cable->port ))		return -1;	PARAM_TRST(cable) = 1;		/* check if a ByteBlaster or ByteBlasterMV is connected */	parport_set_data( cable->port, 1 << BB_CHECK);	if ( !( ( parport_get_status( cable->port ) >> BB_PRESENT ) & 1 ) )		BB_II = 1;	parport_set_data( cable->port, 0);	if ( ( parport_get_status( cable->port ) >> BB_PRESENT ) & 1 )		BB_II = 1;		/* check if the power supply is ok (only for ByteBlaster II) */	/* if no ByteBlaster at all is connected this check will fail, too */	if ( ( BB_II ) && ( ( parport_get_status( cable->port ) >> VCC_OK_N ) & 1 ) )		return -1;		/* Enable ByteBlaster */	parport_set_control( cable->port, BB_ENABLE );	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};