2 * Realtek 8019AS Ethernet
3 * (C) Copyright 2002-2003
4 * Xue Ligong(lgxue@hotmail.com),Wang Kehao, ESLAB, whut.edu.cn
6 * See file CREDITS for list of people who contributed to this
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.
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.
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,
26 * This code works in 8bit mode.
27 * If you need to work in 16bit mode, PLS change it!
35 #ifdef CONFIG_DRIVER_RTL8019
37 #if defined(CONFIG_CMD_NET)
39 /* packet page register access functions */
41 static unsigned char get_reg (unsigned int regno)
43 return (*(unsigned char *) regno);
46 static void put_reg (unsigned int regno, unsigned char val)
48 *(volatile unsigned char *) regno = val;
51 static void eth_reset (void)
56 ucTemp = get_reg (RTL8019_RESET);
57 put_reg (RTL8019_RESET, ucTemp);
58 put_reg (RTL8019_INTERRUPTSTATUS, 0xff);
59 udelay (2000); /* wait for 2ms */
62 void rtl8019_get_enetaddr (uchar * addr)
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);
77 for (i = 0; i < 6; i++) {
78 temp = get_reg (RTL8019_DMA_DATA);
80 temp = get_reg (RTL8019_DMA_DATA);
84 while ((!get_reg (RTL8019_INTERRUPTSTATUS) & 0x40));
86 put_reg (RTL8019_REMOTEBYTECOUNT0, 0x00);
87 put_reg (RTL8019_REMOTEBYTECOUNT1, 0x00);
88 put_reg (RTL8019_COMMAND, RTL8019_PAGE0);
93 put_reg (RTL8019_COMMAND, 0x01);
96 int eth_init (bd_t * bd)
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; */
133 static unsigned char nic_to_pc (void)
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;
141 unsigned char current_point;
145 * The RTL8019's first 4B is packet status,page of next packet
146 * and packet length(2B).So we receive the fist 4B.
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);
153 put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMARD);
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);
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);
166 if (rxlen > PKTSIZE_ALIGN + PKTALIGN)
167 printf ("packet too big!\n");
169 /*Receive the packet */
170 put_reg (RTL8019_REMOTESTARTADDRESS0, 0x04);
171 put_reg (RTL8019_REMOTESTARTADDRESS1, get_reg (RTL8019_BOUNDARY));
173 put_reg (RTL8019_REMOTEBYTECOUNT0, (rxlen & 0xff));
174 put_reg (RTL8019_REMOTEBYTECOUNT1, ((rxlen >> 8) & 0xff));
177 put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMARD);
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);
184 while (!(get_reg (RTL8019_INTERRUPTSTATUS)) & 0x40); /* wait for the op. */
187 * To test whether the packets are all received,get the
188 * location of current point
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;
197 /* Get a data block via Ethernet */
198 extern int eth_rx (void)
200 unsigned char temp, current_point;
202 put_reg (RTL8019_COMMAND, RTL8019_PAGE0);
205 temp = get_reg (RTL8019_INTERRUPTSTATUS);
209 put_reg (RTL8019_COMMAND, RTL8019_PAGE0STOP);
211 put_reg (RTL8019_REMOTEBYTECOUNT0, 0);
212 put_reg (RTL8019_REMOTEBYTECOUNT1, 0);
213 put_reg (RTL8019_TRANSMITCONFIGURATION, 2);
215 current_point = nic_to_pc ();
216 } while (get_reg (RTL8019_BOUNDARY) != current_point);
218 put_reg (RTL8019_TRANSMITCONFIGURATION, 0xe0);
224 put_reg (RTL8019_INTERRUPTSTATUS, 0x01);
225 current_point = nic_to_pc ();
226 } while (get_reg (RTL8019_BOUNDARY) != current_point);
235 /* Send a data block via Ethernet. */
236 extern int eth_send (volatile void *packet, int length)
238 volatile unsigned char *p;
242 p = (volatile unsigned char *) packet;
244 while (get_reg (RTL8019_COMMAND) == RTL8019_TRANSMIT);
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));
251 put_reg (RTL8019_COMMAND, RTL8019_REMOTEDMAWR);
253 put_reg (RTL8019_DMA_DATA, *p++);
259 while (pn < 60) { /*Padding */
260 put_reg (RTL8019_DMA_DATA, 0);
264 while (!(get_reg (RTL8019_INTERRUPTSTATUS)) & 0x40);
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);
275 #endif /* CONFIG_CMD_NET */
277 #endif /* CONFIG_DRIVER_RTL8019 */