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158 lines
4.0 KiB
C
158 lines
4.0 KiB
C
/******************************************************************************
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*
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* Author: Xilinx, Inc.
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*
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*
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* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
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* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
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* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
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* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
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* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
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* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
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* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
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* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
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* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
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* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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*
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* Xilinx hardware products are not intended for use in life support
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* appliances, devices, or systems. Use in such applications is
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* expressly prohibited.
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*
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*
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* (c) Copyright 2002-2004 Xilinx Inc.
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* All rights reserved.
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*
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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******************************************************************************/
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#include <common.h>
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#include <net.h>
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#include "xparameters.h"
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#include "xemac.h"
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#if defined(XPAR_EMAC_0_DEVICE_ID)
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/*
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* ENET_MAX_MTU and ENET_MAX_MTU_ALIGNED are set from
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* PKTSIZE and PKTSIZE_ALIGN (include/net.h)
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*/
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#define ENET_MAX_MTU PKTSIZE
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#define ENET_MAX_MTU_ALIGNED PKTSIZE_ALIGN
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#define ENET_ADDR_LENGTH 6
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static XEmac Emac;
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static char etherrxbuff[PKTSIZE_ALIGN]; /* Receive buffer */
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/* hardcoded MAC address for the Xilinx EMAC Core when env is nowhere*/
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#ifdef CFG_ENV_IS_NOWHERE
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static u8 EMACAddr[ENET_ADDR_LENGTH] = { 0x00, 0x0a, 0x35, 0x00, 0x22, 0x01 };
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#endif
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static int initialized = 0;
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void
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eth_halt(void)
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{
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if (initialized)
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(void) XEmac_Stop(&Emac);
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}
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int
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eth_init(bd_t * bis)
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{
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u32 Options;
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XStatus Result;
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#ifdef DEBUG
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printf("EMAC Initialization Started\n\r");
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#endif
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Result = XEmac_Initialize(&Emac, XPAR_EMAC_0_DEVICE_ID);
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if (Result != XST_SUCCESS) {
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return 0;
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}
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/* make sure the Emac is stopped before it is started */
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(void) XEmac_Stop(&Emac);
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#ifdef CFG_ENV_IS_NOWHERE
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memcpy(bis->bi_enetaddr, EMACAddr, 6);
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#endif
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Result = XEmac_SetMacAddress(&Emac, bis->bi_enetaddr);
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if (Result != XST_SUCCESS) {
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return 0;
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}
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Options =
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(XEM_POLLED_OPTION | XEM_UNICAST_OPTION | XEM_BROADCAST_OPTION |
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XEM_FDUPLEX_OPTION | XEM_INSERT_FCS_OPTION |
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XEM_INSERT_PAD_OPTION);
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Result = XEmac_SetOptions(&Emac, Options);
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if (Result != XST_SUCCESS) {
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return 0;
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}
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Result = XEmac_Start(&Emac);
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if (Result != XST_SUCCESS) {
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return 0;
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}
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#ifdef DEBUG
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printf("EMAC Initialization complete\n\r");
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#endif
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initialized = 1;
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return (0);
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}
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/*-----------------------------------------------------------------------------+
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+-----------------------------------------------------------------------------*/
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int
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eth_send(volatile void *ptr, int len)
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{
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XStatus Result;
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if (len > ENET_MAX_MTU)
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len = ENET_MAX_MTU;
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Result = XEmac_PollSend(&Emac, (u8 *) ptr, len);
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if (Result == XST_SUCCESS) {
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return (1);
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} else {
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printf("Error while sending frame\n\r");
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return (0);
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}
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}
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int
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eth_rx(void)
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{
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u32 RecvFrameLength;
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XStatus Result;
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RecvFrameLength = PKTSIZE;
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Result = XEmac_PollRecv(&Emac, (u8 *) etherrxbuff, &RecvFrameLength);
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if (Result == XST_SUCCESS) {
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NetReceive((uchar *)etherrxbuff, RecvFrameLength);
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return (1);
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} else {
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return (0);
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}
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}
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#endif
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