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wdenkef5a9672003-12-07 00:46:27 +00001/*
2 * Realtek 8019AS Ethernet
3 * (C) Copyright 2002-2003
4 * Xue Ligong(lgxue@hotmail.com),Wang Kehao, ESLAB, whut.edu.cn
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 */
24
25/*
26 * This code works in 8bit mode.
27 * If you need to work in 16bit mode, PLS change it!
28 */
29
30#include <common.h>
31#include <command.h>
32#include "rtl8019.h"
33#include <net.h>
34
35#ifdef CONFIG_DRIVER_RTL8019
36
Jon Loeligercb51c0b2007-07-09 17:39:42 -050037#if defined(CONFIG_CMD_NET)
wdenkef5a9672003-12-07 00:46:27 +000038
wdenkef5a9672003-12-07 00:46:27 +000039/* packet page register access functions */
40
wdenkef5a9672003-12-07 00:46:27 +000041static unsigned char get_reg (unsigned int regno)
42{
43 return (*(unsigned char *) regno);
44}
45
wdenkef5a9672003-12-07 00:46:27 +000046static void put_reg (unsigned int regno, unsigned char val)
47{
48 *(volatile unsigned char *) regno = val;
49}
50
51static void eth_reset (void)
52{
53 unsigned char ucTemp;
54
55 /* reset NIC */
56 ucTemp = get_reg (RTL8019_RESET);
57 put_reg (RTL8019_RESET, ucTemp);
58 put_reg (RTL8019_INTERRUPTSTATUS, 0xff);
59 udelay (2000); /* wait for 2ms */
60}
61
62void rtl8019_get_enetaddr (uchar * addr)
63{
64 unsigned char i;
65 unsigned char temp;
66
67 eth_reset ();
68
69 put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMARD);
70 put_reg (RTL8019_DATACONFIGURATION, 0x48);
71 put_reg (RTL8019_REMOTESTARTADDRESS0, 0x00);
72 put_reg (RTL8019_REMOTESTARTADDRESS1, 0x00);
73 put_reg (RTL8019_REMOTEBYTECOUNT0, 12);
74 put_reg (RTL8019_REMOTEBYTECOUNT1, 0x00);
75 put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMARD);
76 printf ("MAC: ");
77 for (i = 0; i < 6; i++) {
78 temp = get_reg (RTL8019_DMA_DATA);
79 *addr++ = temp;
80 temp = get_reg (RTL8019_DMA_DATA);
81 printf ("%x:", temp);
82 }
83
84 while ((!get_reg (RTL8019_INTERRUPTSTATUS) & 0x40));
85 printf ("\b \n");
86 put_reg (RTL8019_REMOTEBYTECOUNT0, 0x00);
87 put_reg (RTL8019_REMOTEBYTECOUNT1, 0x00);
88 put_reg (RTL8019_COMMAND, RTL8019_PAGE0);
89}
90
wdenkef5a9672003-12-07 00:46:27 +000091void eth_halt (void)
92{
93 put_reg (RTL8019_COMMAND, 0x01);
94}
95
96int eth_init (bd_t * bd)
97{
98 eth_reset ();
99 put_reg (RTL8019_COMMAND, RTL8019_PAGE0STOP);
100 put_reg (RTL8019_DATACONFIGURATION, 0x48);
101 put_reg (RTL8019_REMOTEBYTECOUNT0, 0x00);
102 put_reg (RTL8019_REMOTEBYTECOUNT1, 0x00);
103 put_reg (RTL8019_RECEIVECONFIGURATION, 0x00); /*00; */
104 put_reg (RTL8019_TRANSMITPAGE, RTL8019_TPSTART);
105 put_reg (RTL8019_TRANSMITCONFIGURATION, 0x02);
106 put_reg (RTL8019_PAGESTART, RTL8019_PSTART);
107 put_reg (RTL8019_BOUNDARY, RTL8019_PSTART);
108 put_reg (RTL8019_PAGESTOP, RTL8019_PSTOP);
109 put_reg (RTL8019_INTERRUPTSTATUS, 0xff);
110 put_reg (RTL8019_INTERRUPTMASK, 0x11); /*b; */
111 put_reg (RTL8019_COMMAND, RTL8019_PAGE1STOP);
112 put_reg (RTL8019_PHYSICALADDRESS0, bd->bi_enetaddr[0]);
113 put_reg (RTL8019_PHYSICALADDRESS1, bd->bi_enetaddr[1]);
114 put_reg (RTL8019_PHYSICALADDRESS2, bd->bi_enetaddr[2]);
115 put_reg (RTL8019_PHYSICALADDRESS3, bd->bi_enetaddr[3]);
116 put_reg (RTL8019_PHYSICALADDRESS4, bd->bi_enetaddr[4]);
117 put_reg (RTL8019_PHYSICALADDRESS5, bd->bi_enetaddr[5]);
118 put_reg (RTL8019_MULTIADDRESS0, 0x00);
119 put_reg (RTL8019_MULTIADDRESS1, 0x00);
120 put_reg (RTL8019_MULTIADDRESS2, 0x00);
121 put_reg (RTL8019_MULTIADDRESS3, 0x00);
122 put_reg (RTL8019_MULTIADDRESS4, 0x00);
123 put_reg (RTL8019_MULTIADDRESS5, 0x00);
124 put_reg (RTL8019_MULTIADDRESS6, 0x00);
125 put_reg (RTL8019_MULTIADDRESS7, 0x00);
126 put_reg (RTL8019_CURRENT, RTL8019_PSTART);
127 put_reg (RTL8019_COMMAND, RTL8019_PAGE0);
128 put_reg (RTL8019_TRANSMITCONFIGURATION, 0xe0); /*58; */
129
130 return 0;
131}
132
wdenkef5a9672003-12-07 00:46:27 +0000133static unsigned char nic_to_pc (void)
134{
135 unsigned char rec_head_status;
136 unsigned char next_packet_pointer;
137 unsigned char packet_length0;
138 unsigned char packet_length1;
139 unsigned short rxlen = 0;
140 unsigned int i = 4;
141 unsigned char current_point;
142 unsigned char *addr;
143
144 /*
145 * The RTL8019's first 4B is packet status,page of next packet
146 * and packet length(2B).So we receive the fist 4B.
147 */
148 put_reg (RTL8019_REMOTESTARTADDRESS1, get_reg (RTL8019_BOUNDARY));
149 put_reg (RTL8019_REMOTESTARTADDRESS0, 0x00);
150 put_reg (RTL8019_REMOTEBYTECOUNT1, 0x00);
151 put_reg (RTL8019_REMOTEBYTECOUNT0, 0x04);
152
153 put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMARD);
154
155 rec_head_status = get_reg (RTL8019_DMA_DATA);
156 next_packet_pointer = get_reg (RTL8019_DMA_DATA);
157 packet_length0 = get_reg (RTL8019_DMA_DATA);
158 packet_length1 = get_reg (RTL8019_DMA_DATA);
159
160 put_reg (RTL8019_COMMAND, RTL8019_PAGE0);
161 /*Packet length is in two 8bit registers */
162 rxlen = packet_length1;
163 rxlen = (((rxlen << 8) & 0xff00) + packet_length0);
164 rxlen -= 4;
165
166 if (rxlen > PKTSIZE_ALIGN + PKTALIGN)
167 printf ("packet too big!\n");
168
169 /*Receive the packet */
170 put_reg (RTL8019_REMOTESTARTADDRESS0, 0x04);
171 put_reg (RTL8019_REMOTESTARTADDRESS1, get_reg (RTL8019_BOUNDARY));
172
173 put_reg (RTL8019_REMOTEBYTECOUNT0, (rxlen & 0xff));
174 put_reg (RTL8019_REMOTEBYTECOUNT1, ((rxlen >> 8) & 0xff));
175
176
177 put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMARD);
178
179 for (addr = (unsigned char *) NetRxPackets[0], i = rxlen; i > 0; i--)
180 *addr++ = get_reg (RTL8019_DMA_DATA);
181 /* Pass the packet up to the protocol layers. */
182 NetReceive (NetRxPackets[0], rxlen);
183
184 while (!(get_reg (RTL8019_INTERRUPTSTATUS)) & 0x40); /* wait for the op. */
185
186 /*
187 * To test whether the packets are all received,get the
188 * location of current point
189 */
190 put_reg (RTL8019_COMMAND, RTL8019_PAGE1);
191 current_point = get_reg (RTL8019_CURRENT);
192 put_reg (RTL8019_COMMAND, RTL8019_PAGE0);
193 put_reg (RTL8019_BOUNDARY, next_packet_pointer);
194 return current_point;
195}
196
197/* Get a data block via Ethernet */
198extern int eth_rx (void)
199{
200 unsigned char temp, current_point;
201
202 put_reg (RTL8019_COMMAND, RTL8019_PAGE0);
203
204 while (1) {
205 temp = get_reg (RTL8019_INTERRUPTSTATUS);
206
207 if (temp & 0x90) {
208 /*overflow */
209 put_reg (RTL8019_COMMAND, RTL8019_PAGE0STOP);
210 udelay (2000);
211 put_reg (RTL8019_REMOTEBYTECOUNT0, 0);
212 put_reg (RTL8019_REMOTEBYTECOUNT1, 0);
213 put_reg (RTL8019_TRANSMITCONFIGURATION, 2);
214 do {
215 current_point = nic_to_pc ();
216 } while (get_reg (RTL8019_BOUNDARY) != current_point);
217
218 put_reg (RTL8019_TRANSMITCONFIGURATION, 0xe0);
219 }
220
221 if (temp & 0x1) {
222 /*packet received */
223 do {
224 put_reg (RTL8019_INTERRUPTSTATUS, 0x01);
225 current_point = nic_to_pc ();
226 } while (get_reg (RTL8019_BOUNDARY) != current_point);
227 }
228
229 if (!(temp & 0x1))
230 return 0;
231 /* done and exit. */
232 }
233}
234
235/* Send a data block via Ethernet. */
236extern int eth_send (volatile void *packet, int length)
237{
238 volatile unsigned char *p;
239 unsigned int pn;
240
241 pn = length;
242 p = (volatile unsigned char *) packet;
243
244 while (get_reg (RTL8019_COMMAND) == RTL8019_TRANSMIT);
245
246 put_reg (RTL8019_REMOTESTARTADDRESS0, 0);
247 put_reg (RTL8019_REMOTESTARTADDRESS1, RTL8019_TPSTART);
248 put_reg (RTL8019_REMOTEBYTECOUNT0, (pn & 0xff));
249 put_reg (RTL8019_REMOTEBYTECOUNT1, ((pn >> 8) & 0xff));
250
251 put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMAWR);
252 while (pn > 0) {
253 put_reg (RTL8019_DMA_DATA, *p++);
254 pn--;
255 }
256
257 pn = length;
258
259 while (pn < 60) { /*Padding */
260 put_reg (RTL8019_DMA_DATA, 0);
261 pn++;
262 }
263
264 while (!(get_reg (RTL8019_INTERRUPTSTATUS)) & 0x40);
265
266 put_reg (RTL8019_INTERRUPTSTATUS, 0x40);
267 put_reg (RTL8019_TRANSMITPAGE, RTL8019_TPSTART);
268 put_reg (RTL8019_TRANSMITBYTECOUNT0, (pn & 0xff));
269 put_reg (RTL8019_TRANSMITBYTECOUNT1, ((pn >> 8 & 0xff)));
270 put_reg (RTL8019_COMMAND, RTL8019_TRANSMIT);
271
272 return 0;
273}
274
Jean-Christophe PLAGNIOL-VILLARD1b769882008-01-25 07:54:47 +0100275#endif /* CONFIG_CMD_NET */
wdenkef5a9672003-12-07 00:46:27 +0000276
277#endif /* CONFIG_DRIVER_RTL8019 */