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