/*	Copyright 2001, 2002 Georges Menie (www.menie.org)	This file is part of Tftpnaive.    Tftpnaive is free software; you can redistribute it and/or modify    it under the terms of the GNU Lesser General Public License as published by    the Free Software Foundation; either version 2 of the License, or    (at your option) any later version.    Tftpnaive 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 Lesser General Public License for more details.    You should have received a copy of the GNU Lesser General Public License    along with Tftpnaive; if not, write to the Free Software    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*/#include "tftpnaive.h"#include "68vz328.h"#include "io.h"#include "net.h"#include "timer.h"#include "proto.h"#include "cs89x.h"int netUp (void){	int error;	memcpy (netif.IEEEIA, (void *) 0x400fffa, sizeof netif.IEEEIA);	netif.send = cs89xSend;	/* disable IRQ */	orl (1 << IRQ_NUM, IMR);	/* initialise the CSB0 to be used as FPGA/CS89 Chip Select */	writew (0x08000000 >> 13, CSGBB);	writew (0x01A1, CSB);		/* read/write, 128k, 4ws, FLASH enable, 16 bits bus */	/* PK3: hardware sleep function pin, active low */	orb (0x08, PKSEL);			// select pin as I/O	orb (0x08, PKDIR);			// select pin as output	orb (0x08, PKDATA);			// set pin high	/* PF5: hardware reset function pin, active high */	orb (0x20, PFSEL);			// select pin as I/O	orb (0x20, PFDIR);			// select pin as output	andb (~0x20, PFDATA);		// set pin low	error = cs89xReset ();	if (error) return error;	/* set interrupt service routine: INT1 -> level 4 */	writel ((int) cs89xISR, ((readb (IVR) & 0xf8) + 4) << 2);	/* INT1 enable (cs8900 IRQ) */	andb (~2, PDPOL);			/* active high signal */	andb (~2, PDIRQEG);			/* level-triggered */	orb (2, PDIRQEN);			/* IRQ enabled */	/* network chip initialization	 * if there is a error the function returns to the caller.	 */	error = cs89xSetup ();	if (error) return error;	/* enable IRQ */	orl (1 << IRQ_NUM, ISR);	andl (~(1 << IRQ_NUM), IMR);	return 0;}int netDown (void){	/* INT1 disable (cs8900 IRQ) */	andb (~2, PDIRQEN);	/* disable IRQ */	orl (1 << IRQ_NUM, IMR);	orl (1 << IRQ_NUM, ISR);	return cs89xReset ();}