📄 rtl8019.lst
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C51 COMPILER V7.06 RTL8019 04/05/2006 12:13:02 PAGE 1
C51 COMPILER V7.06, COMPILATION OF MODULE RTL8019
OBJECT MODULE PLACED IN .\DEBUG\rtl8019.obj
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE RTL8019\rtl8019.c LARGE OPTIMIZE(6,SPEED) BROWSE DEBUG OBJECTEXTEND PRINT(.
-\DEBUG\rtl8019.lst) OBJECT(.\DEBUG\rtl8019.obj)
stmt level source
1 #ifndef OS_MASTER_FILE
2 #include <CORE\includes.h>
3 #endif
4 #include <uip\uip.h>
5 #include <global_para.h>
6 #include "rtl8019.h"
7 #include <serial.h>
8 sbit RST8019 = P3 ^ 5;
9
10 /*****************************************************************************
11 * writeRTL( RTL_ADDRESS, RTL_DATA )
12 * Args: 1. unsigned char RTL_ADDRESS - register offset of RTL register
13 * 2. unsigned char RTL_DATA - data to write to register
14 * Created By: Louis Beaudoin
15 * Date: September 21, 2002
16 * Description: Writes byte to RTL8019 register.
17 *
18 * Notes - If using the External SRAM Interface, performs a write to
19 * address MEMORY_MAPPED_RTL8019_OFFSET + (RTL_ADDRESS<<8)
20 * The address is sent in the non-multiplxed upper address port so
21 * no latch is required.
22 *
23 * If using general I/O ports, the data port is left in the input
24 * state with pullups enabled
25 *
26 *****************************************************************************/
27 void writeRTL(unsigned char RTL_ADDRESS, unsigned char ppdata)
28 {
29 1 INT8U xdata *tmp;
30 1 tmp=MEMORY_MAPPED_RTL8019_OFFSET + (((unsigned char)(RTL_ADDRESS)) << 8);
31 1 *tmp=ppdata;
32 1 }
33
34
35
36 /*****************************************************************************
37 * readRTL(RTL_ADDRESS)
38 * Args: unsigned char RTL_ADDRESS - register offset of RTL register
39 * Created By: Louis Beaudoin
40 * Date: September 21, 2002
41 * Description: Reads byte from RTL8019 register
42 *
43 * Notes - If using the External SRAM Interface, performs a read from
44 * address MEMORY_MAPPED_RTL8019_OFFSET + (RTL_ADDRESS<<8)
45 * The address is sent in the non-multiplxed upper address port so
46 * no latch is required.
47 *
48 * If using general I/O ports, the data port is assumed to already be
49 * an input, and is left as an input port when done
50 *
51 *****************************************************************************/
52 unsigned char readRTL(unsigned char RTL_ADDRESS)
53 {
54 1 INT8U xdata *tmp;
C51 COMPILER V7.06 RTL8019 04/05/2006 12:13:02 PAGE 2
55 1 tmp=MEMORY_MAPPED_RTL8019_OFFSET + (((unsigned char)(RTL_ADDRESS)) << 8);
56 1 return *tmp;
57 1 }
58
59 /*****************************************************************************
60 * RTL8019setupPorts(void);
61 *
62 * Created By: Louis Beaudoin
63 * Date: September 21, 2002
64 * Description: Sets up the ports used for communication with the RTL8019 NIC
65 * (data bus, address bus, read, write, and reset)
66 *****************************************************************************/
67 void RTL8019setupPorts(void)
68 {
69 1
70 1
71 1 }
72 /*****************************************************************************
73 * HARD_RESET_RTL8019()
74 *
75 * Created By: Louis Beaudoin
76 * Date: September 21, 2002
77 * Description: Simply toggles the pin that resets the NIC
78 *****************************************************************************/
79 void HARD_RESET_RTL8019(void)
80 {
81 1 INT16U COUNT;
82 1 for(COUNT=0;COUNT<1000;COUNT++);
83 1 RST8019=1;
84 1 //Delay_10ms(1);
85 1 for(COUNT=0;COUNT<5000;COUNT++);
86 1 RST8019=0;
87 1 for(COUNT=0;COUNT<2000;COUNT++);
88 1 }
89
90 /*****************************************************************************
91 * overrun(void);
92 *
93 * Created By: Louis Beaudoin
94 * Date: September 21, 2002
95 * Description: "Canned" receive buffer overrun function originally from
96 * a National Semiconductor appnote
97 * Notes: This function must be called before retreiving packets from
98 * the NIC if there is a buffer overrun
99 *****************************************************************************/
100 void overrun(void);
101
102 //******************************************************************
103 //* REALTEK CONTROL REGISTER OFFSETS
104 //* All offsets in Page 0 unless otherwise specified
105 //* All functions accessing CR must leave CR in page 0 upon exit
106 //******************************************************************
107 #define CR 0x00
108 #define PSTART 0x01
109 #define PAR0 0x01 // Page 1
110 #define CR9346 0x01 // Page 3
111 #define PSTOP 0x02
112 #define BNRY 0x03
113 #define TSR 0x04
114 #define TPSR 0x04
115 #define TBCR0 0x05
116 #define NCR 0x05
C51 COMPILER V7.06 RTL8019 04/05/2006 12:13:02 PAGE 3
117 #define TBCR1 0x06
118 #define ISR 0x07
119 #define CURR 0x07 // Page 1
120 #define RSAR0 0x08
121 #define CRDA0 0x08
122 #define RSAR1 0x09
123 #define CRDA1 0x09
124 #define RBCR0 0x0A
125 #define RBCR1 0x0B
126 #define RSR 0x0C
127 #define RCR 0x0C
128 #define TCR 0x0D
129 #define CNTR0 0x0D
130 #define DCR 0x0E
131 #define CNTR1 0x0E
132 #define IMR 0x0F
133 #define CNTR2 0x0F
134 #define RDMAPORT 0x10
135 #define RSTPORT 0x18
136
137
138 /*****************************************************************************
139 *
140 * RTL ISR Register Bits
141 *
142 *****************************************************************************/
143 #define ISR_RST 7
144 #define ISR_OVW 4
145 #define ISR_PRX 0
146 #define ISR_RDC 6
147 #define ISR_PTX 1
148
149
150 /*****************************************************************************
151 *
152 * RTL Register Initialization Values
153 *
154 *****************************************************************************/
155 // RCR : accept broadcast packets and packets destined to this MAC
156 // drop short frames and receive errors
157 #define RCR_INIT 0x04
158
159 // TCR : default transmit operation - CRC is generated
160 #define TCR_INIT 0x00
161
162 // DCR : allows send packet to be used for packet retreival
163 // FIFO threshold: 8-bits (works)
164 // 8-bit transfer mode
165 #define DCR_INIT 0x58
166
167 // IMR : interrupt enabled for receive and overrun events
168 #define IMR_INIT 0x11
169
170 // buffer boundaries - transmit has 6 256-byte pages
171 // receive has 26 256-byte pages
172 // entire available packet buffer space is allocated
173 #define TXSTART_INIT 0x40
174 #define RXSTART_INIT 0x46
175 #define RXSTOP_INIT 0x60
176
177
178
C51 COMPILER V7.06 RTL8019 04/05/2006 12:13:02 PAGE 4
179 void RTL8019beginPacketSend(unsigned int packetLength)
180 {
181 1 unsigned int sendPacketLength;
182 1 sendPacketLength = (packetLength>=ETHERNET_MIN_PACKET_LENGTH) ?
183 1 packetLength : ETHERNET_MIN_PACKET_LENGTH ;
184 1
185 1 //start the NIC
186 1 writeRTL(CR,0x22);
187 1
188 1 // still transmitting a packet - wait for it to finish
189 1 while( readRTL(CR) & 0x04 );
190 1
191 1 //load beginning page for transmit buffer
192 1 writeRTL(TPSR,TXSTART_INIT);
193 1
194 1 //set start address for remote DMA operation
195 1 writeRTL(RSAR0,0x00);
196 1 writeRTL(RSAR1,0x40);
197 1
198 1 //clear the packet stored interrupt
199 1 writeRTL(ISR,(1<<ISR_PTX));
200 1
201 1 //load data byte count for remote DMA
202 1 writeRTL(RBCR0, (unsigned char)(packetLength));
203 1 writeRTL(RBCR1, (unsigned char)(packetLength>>8));
204 1
205 1 writeRTL(TBCR0, (unsigned char)(sendPacketLength));
206 1 writeRTL(TBCR1, (unsigned char)((sendPacketLength)>>8));
207 1
208 1 //do remote write operation
209 1 writeRTL(CR,0x12);
210 1 }
211
212 void RTL8019sendPacketData(unsigned char * localBuffer, unsigned int length)
213 {
214 1 unsigned int i;
215 1
216 1 for(i=0;i<length;i++)
217 1 writeRTL(RDMAPORT, localBuffer[i]);
218 1 }
219
220
221
222 void RTL8019endPacketSend(void)
223 {
224 1 //send the contents of the transmit buffer onto the network
225 1 writeRTL(CR,0x24);
226 1
227 1 // clear the remote DMA interrupt
228 1 writeRTL(ISR, (1<<ISR_RDC));
229 1 }
230
231
232 //----THE ABOVE IS FOR SEND--------------
233 //----THE LIST IS FOR RECEIVE-----------
234
235 // pointers to locations in the RTL8019 receive buffer
236 static unsigned char nextPage;
237 static unsigned int currentRetreiveAddress;
238
239 // location of items in the RTL8019's page header
240 #define enetpacketstatus 0x00
C51 COMPILER V7.06 RTL8019 04/05/2006 12:13:02 PAGE 5
241 #define nextblock_ptr 0x01
242 #define enetpacketLenL 0x02
243 #define enetpacketLenH 0x03
244
245 unsigned int RTL8019beginPacketRetreive(void)
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