/* * Realtek 8019AS Ethernet * (C) Copyright 2002-2003 * Xue Ligong(lgxue@hotmail.com),Wang Kehao, ESLAB, whut.edu.cn * * See file CREDITS for list of people who contributed to this * project. * * 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 *//* * This code works in 8bit mode. * If you need to work in 16bit mode, PLS change it! */#include <common.h>#include <command.h>#include "rtl8019.h"#include <net.h>#ifdef CONFIG_DRIVER_RTL8019#if (CONFIG_COMMANDS & CFG_CMD_NET)/* packet page register access functions */static unsigned char get_reg (unsigned int regno){	return (*(unsigned char *) regno);}static void put_reg (unsigned int regno, unsigned char val){	*(volatile unsigned char *) regno = val;}static void eth_reset (void){	unsigned char ucTemp;	/* reset NIC */	ucTemp = get_reg (RTL8019_RESET);	put_reg (RTL8019_RESET, ucTemp);	put_reg (RTL8019_INTERRUPTSTATUS, 0xff);	udelay (2000);		/* wait for 2ms */}void rtl8019_get_enetaddr (uchar * addr){	unsigned char i;	unsigned char temp;	eth_reset ();	put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMARD);	put_reg (RTL8019_DATACONFIGURATION, 0x48);	put_reg (RTL8019_REMOTESTARTADDRESS0, 0x00);	put_reg (RTL8019_REMOTESTARTADDRESS1, 0x00);	put_reg (RTL8019_REMOTEBYTECOUNT0, 12);	put_reg (RTL8019_REMOTEBYTECOUNT1, 0x00);	put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMARD);	printf ("MAC: ");	for (i = 0; i < 6; i++) {		temp = get_reg (RTL8019_DMA_DATA);		*addr++ = temp;		temp = get_reg (RTL8019_DMA_DATA);		printf ("%x:", temp);	}	while ((!get_reg (RTL8019_INTERRUPTSTATUS) & 0x40));	printf ("\b \n");	put_reg (RTL8019_REMOTEBYTECOUNT0, 0x00);	put_reg (RTL8019_REMOTEBYTECOUNT1, 0x00);	put_reg (RTL8019_COMMAND, RTL8019_PAGE0);}void eth_halt (void){	put_reg (RTL8019_COMMAND, 0x01);}int eth_init (bd_t * bd){	eth_reset ();	put_reg (RTL8019_COMMAND, RTL8019_PAGE0STOP);	put_reg (RTL8019_DATACONFIGURATION, 0x48);	put_reg (RTL8019_REMOTEBYTECOUNT0, 0x00);	put_reg (RTL8019_REMOTEBYTECOUNT1, 0x00);	put_reg (RTL8019_RECEIVECONFIGURATION, 0x00);	/*00; */	put_reg (RTL8019_TRANSMITPAGE, RTL8019_TPSTART);	put_reg (RTL8019_TRANSMITCONFIGURATION, 0x02);	put_reg (RTL8019_PAGESTART, RTL8019_PSTART);	put_reg (RTL8019_BOUNDARY, RTL8019_PSTART);	put_reg (RTL8019_PAGESTOP, RTL8019_PSTOP);	put_reg (RTL8019_INTERRUPTSTATUS, 0xff);	put_reg (RTL8019_INTERRUPTMASK, 0x11);	/*b; */	put_reg (RTL8019_COMMAND, RTL8019_PAGE1STOP);	put_reg (RTL8019_PHYSICALADDRESS0, bd->bi_enetaddr[0]);	put_reg (RTL8019_PHYSICALADDRESS1, bd->bi_enetaddr[1]);	put_reg (RTL8019_PHYSICALADDRESS2, bd->bi_enetaddr[2]);	put_reg (RTL8019_PHYSICALADDRESS3, bd->bi_enetaddr[3]);	put_reg (RTL8019_PHYSICALADDRESS4, bd->bi_enetaddr[4]);	put_reg (RTL8019_PHYSICALADDRESS5, bd->bi_enetaddr[5]);	put_reg (RTL8019_MULTIADDRESS0, 0x00);	put_reg (RTL8019_MULTIADDRESS1, 0x00);	put_reg (RTL8019_MULTIADDRESS2, 0x00);	put_reg (RTL8019_MULTIADDRESS3, 0x00);	put_reg (RTL8019_MULTIADDRESS4, 0x00);	put_reg (RTL8019_MULTIADDRESS5, 0x00);	put_reg (RTL8019_MULTIADDRESS6, 0x00);	put_reg (RTL8019_MULTIADDRESS7, 0x00);	put_reg (RTL8019_CURRENT, RTL8019_PSTART);	put_reg (RTL8019_COMMAND, RTL8019_PAGE0);	put_reg (RTL8019_TRANSMITCONFIGURATION, 0xe0);	/*58; */	return 0;}static unsigned char nic_to_pc (void){	unsigned char rec_head_status;	unsigned char next_packet_pointer;	unsigned char packet_length0;	unsigned char packet_length1;	unsigned short rxlen = 0;	unsigned int i = 4;	unsigned char current_point;	unsigned char *addr;	/*	 * The RTL8019's first 4B is packet status,page of next packet	 * and packet length(2B).So we receive the fist 4B.	 */	put_reg (RTL8019_REMOTESTARTADDRESS1, get_reg (RTL8019_BOUNDARY));	put_reg (RTL8019_REMOTESTARTADDRESS0, 0x00);	put_reg (RTL8019_REMOTEBYTECOUNT1, 0x00);	put_reg (RTL8019_REMOTEBYTECOUNT0, 0x04);	put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMARD);	rec_head_status = get_reg (RTL8019_DMA_DATA);	next_packet_pointer = get_reg (RTL8019_DMA_DATA);	packet_length0 = get_reg (RTL8019_DMA_DATA);	packet_length1 = get_reg (RTL8019_DMA_DATA);	put_reg (RTL8019_COMMAND, RTL8019_PAGE0);	/*Packet length is in two 8bit registers */	rxlen = packet_length1;	rxlen = (((rxlen << 8) & 0xff00) + packet_length0);	rxlen -= 4;	if (rxlen > PKTSIZE_ALIGN + PKTALIGN)		printf ("packet too big!\n");	/*Receive the packet */	put_reg (RTL8019_REMOTESTARTADDRESS0, 0x04);	put_reg (RTL8019_REMOTESTARTADDRESS1, get_reg (RTL8019_BOUNDARY));	put_reg (RTL8019_REMOTEBYTECOUNT0, (rxlen & 0xff));	put_reg (RTL8019_REMOTEBYTECOUNT1, ((rxlen >> 8) & 0xff));	put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMARD);	for (addr = (unsigned char *) NetRxPackets[0], i = rxlen; i > 0; i--)		*addr++ = get_reg (RTL8019_DMA_DATA);	/* Pass the packet up to the protocol layers. */	NetReceive (NetRxPackets[0], rxlen);	while (!(get_reg (RTL8019_INTERRUPTSTATUS)) & 0x40);	/* wait for the op. */	/*	 * To test whether the packets are all received,get the	 * location of current point	 */	put_reg (RTL8019_COMMAND, RTL8019_PAGE1);	current_point = get_reg (RTL8019_CURRENT);	put_reg (RTL8019_COMMAND, RTL8019_PAGE0);	put_reg (RTL8019_BOUNDARY, next_packet_pointer);	return current_point;}/* Get a data block via Ethernet */extern int eth_rx (void){	unsigned char temp, current_point;	put_reg (RTL8019_COMMAND, RTL8019_PAGE0);	while (1) {		temp = get_reg (RTL8019_INTERRUPTSTATUS);		if (temp & 0x90) {			/*overflow */			put_reg (RTL8019_COMMAND, RTL8019_PAGE0STOP);			udelay (2000);			put_reg (RTL8019_REMOTEBYTECOUNT0, 0);			put_reg (RTL8019_REMOTEBYTECOUNT1, 0);			put_reg (RTL8019_TRANSMITCONFIGURATION, 2);			do {				current_point = nic_to_pc ();			} while (get_reg (RTL8019_BOUNDARY) != current_point);			put_reg (RTL8019_TRANSMITCONFIGURATION, 0xe0);		}		if (temp & 0x1) {			/*packet received */			do {				put_reg (RTL8019_INTERRUPTSTATUS, 0x01);				current_point = nic_to_pc ();			} while (get_reg (RTL8019_BOUNDARY) != current_point);		}		if (!(temp & 0x1))			return 0;		/* done and exit. */	}}/* Send a data block via Ethernet. */extern int eth_send (volatile void *packet, int length){	volatile unsigned char *p;	unsigned int pn;	pn = length;	p = (volatile unsigned char *) packet;	while (get_reg (RTL8019_COMMAND) == RTL8019_TRANSMIT);	put_reg (RTL8019_REMOTESTARTADDRESS0, 0);	put_reg (RTL8019_REMOTESTARTADDRESS1, RTL8019_TPSTART);	put_reg (RTL8019_REMOTEBYTECOUNT0, (pn & 0xff));	put_reg (RTL8019_REMOTEBYTECOUNT1, ((pn >> 8) & 0xff));	put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMAWR);	while (pn > 0) {		put_reg (RTL8019_DMA_DATA, *p++);		pn--;	}	pn = length;	while (pn < 60) {	/*Padding */		put_reg (RTL8019_DMA_DATA, 0);		pn++;	}	while (!(get_reg (RTL8019_INTERRUPTSTATUS)) & 0x40);	put_reg (RTL8019_INTERRUPTSTATUS, 0x40);	put_reg (RTL8019_TRANSMITPAGE, RTL8019_TPSTART);	put_reg (RTL8019_TRANSMITBYTECOUNT0, (pn & 0xff));	put_reg (RTL8019_TRANSMITBYTECOUNT1, ((pn >> 8 & 0xff)));	put_reg (RTL8019_COMMAND, RTL8019_TRANSMIT);	return 0;}#endif /* COMMANDS & CFG_NET */#endif /* CONFIG_DRIVER_RTL8019 */