source: SVN/rincon/u-boot/board/xilinx/xilinx_enet/emac_adapter.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 4.0 KB
Line 
1/******************************************************************************
2*
3*     Author: Xilinx, Inc.
4*
5*
6*     This program is free software; you can redistribute it and/or modify it
7*     under the terms of the GNU General Public License as published by the
8*     Free Software Foundation; either version 2 of the License, or (at your
9*     option) any later version.
10*
11*
12*     XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
13*     COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
14*     ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
15*     XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
16*     FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
17*     ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
18*     XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
19*     THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
20*     WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
21*     CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
22*     FITNESS FOR A PARTICULAR PURPOSE.
23*
24*
25*     Xilinx hardware products are not intended for use in life support
26*     appliances, devices, or systems. Use in such applications is
27*     expressly prohibited.
28*
29*
30*     (c) Copyright 2002-2004 Xilinx Inc.
31*     All rights reserved.
32*
33*
34*     You should have received a copy of the GNU General Public License along
35*     with this program; if not, write to the Free Software Foundation, Inc.,
36*     675 Mass Ave, Cambridge, MA 02139, USA.
37*
38******************************************************************************/
39
40#include <config.h>
41#include <common.h>
42#include <net.h>
43#include "xemac.h"
44
45#if defined(XPAR_EMAC_0_DEVICE_ID)
46/*
47 * ENET_MAX_MTU and ENET_MAX_MTU_ALIGNED are set from
48 * PKTSIZE and PKTSIZE_ALIGN (include/net.h)
49 */
50
51#define ENET_MAX_MTU           PKTSIZE
52#define ENET_MAX_MTU_ALIGNED   PKTSIZE_ALIGN
53#define ENET_ADDR_LENGTH       6
54
55static XEmac Emac;
56static char etherrxbuff[PKTSIZE_ALIGN]; /* Receive buffer */
57
58/* hardcoded MAC address for the Xilinx EMAC Core when env is nowhere*/
59#ifdef CONFIG_ENV_IS_NOWHERE
60static u8 EMACAddr[ENET_ADDR_LENGTH] = { 0x00, 0x0a, 0x35, 0x00, 0x22, 0x01 };
61#endif
62
63static int initialized = 0;
64
65void
66eth_halt(void)
67{
68        if (initialized)
69                (void) XEmac_Stop(&Emac);
70}
71
72int
73eth_init(bd_t * bis)
74{
75        u32 Options;
76        XStatus Result;
77
78#ifdef DEBUG
79        printf("EMAC Initialization Started\n\r");
80#endif
81
82        Result = XEmac_Initialize(&Emac, XPAR_EMAC_0_DEVICE_ID);
83        if (Result != XST_SUCCESS) {
84                return 0;
85        }
86
87        /* make sure the Emac is stopped before it is started */
88        (void) XEmac_Stop(&Emac);
89
90#ifdef CONFIG_ENV_IS_NOWHERE
91        memcpy(bis->bi_enetaddr, EMACAddr, 6);
92#endif
93
94        Result = XEmac_SetMacAddress(&Emac, bis->bi_enetaddr);
95        if (Result != XST_SUCCESS) {
96                return 0;
97        }
98
99        Options =
100            (XEM_POLLED_OPTION | XEM_UNICAST_OPTION | XEM_BROADCAST_OPTION |
101             XEM_FDUPLEX_OPTION | XEM_INSERT_FCS_OPTION |
102             XEM_INSERT_PAD_OPTION);
103        Result = XEmac_SetOptions(&Emac, Options);
104        if (Result != XST_SUCCESS) {
105                return 0;
106        }
107
108        Result = XEmac_Start(&Emac);
109        if (Result != XST_SUCCESS) {
110                return 0;
111        }
112#ifdef DEBUG
113        printf("EMAC Initialization complete\n\r");
114#endif
115
116        initialized = 1;
117
118        return (0);
119}
120
121/*-----------------------------------------------------------------------------+
122+-----------------------------------------------------------------------------*/
123int
124eth_send(volatile void *ptr, int len)
125{
126        XStatus Result;
127
128        if (len > ENET_MAX_MTU)
129                len = ENET_MAX_MTU;
130
131        Result = XEmac_PollSend(&Emac, (u8 *) ptr, len);
132        if (Result == XST_SUCCESS) {
133                return (1);
134        } else {
135                printf("Error while sending frame\n\r");
136                return (0);
137        }
138
139}
140
141int
142eth_rx(void)
143{
144        u32 RecvFrameLength;
145        XStatus Result;
146
147        RecvFrameLength = PKTSIZE;
148        Result = XEmac_PollRecv(&Emac, (u8 *) etherrxbuff, &RecvFrameLength);
149        if (Result == XST_SUCCESS) {
150#ifndef CONFIG_EMACLITE
151                NetReceive((uchar *)etherrxbuff, RecvFrameLength);
152#else
153                NetReceive(etherrxbuff, RecvFrameLength);
154#endif
155                return (1);
156        } else {
157                return (0);
158        }
159}
160
161#endif
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