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[/] [or1k/] [trunk/] [orpmon/] [drivers/] [eth.c] - Blame information for rev 1781

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Line No. Rev Author Line
1 1495 jcastillo 
#include "board.h"
2 
#if OC_LAN==1
3 
 
4 809 simons 
#include "common.h"
5 
#include "support.h"
6 
#include "uart.h"
7 
#include "eth.h"
8 855 markom 
#include "int.h"
9 809 simons 
#include "spr_defs.h"
10 
 
11 
extern int printf (const char *fmt, ...);
12 
extern void lolev_ie(void);
13 
extern void lolev_idis(void);
14 
 
15 
int tx_next;  /* Next buffer to be given to the user */
16 
int tx_last;  /* Next buffer to be checked if packet sent */
17 
int tx_full;
18 
int rx_next;  /* Next buffer to be checked for new packet and given to the user */
19 828 markom 
void (*receive)(volatile unsigned char *add, int len); /* Pointer to function to be called
20 809 simons 
                                        when frame is received */
21 
 
22 834 simons 
unsigned long eth_data[((ETH_TXBD_NUM + ETH_RXBD_NUM) * ETH_MAXBUF_LEN)/4] = {0};
23 
#undef ETH_DATA_BASE
24 
#define ETH_DATA_BASE ((unsigned long)eth_data)
25 
 
26 833 simons 
static void
27 
print_packet(unsigned long add, int len)
28 
{
29 
  int i;
30 
 
31 855 markom 
  printf("ipacket: add = %lx len = %d\n", add, len);
32 833 simons 
  for(i = 0; i < len; i++) {
33 
      if(!(i % 16))
34 
          printf("\n");
35 
      printf(" %.2x", *(((unsigned char *)add) + i));
36 
  }
37 
  printf("\n");
38 
}
39 
 
40 809 simons 
void init_tx_bd_pool(void)
41 
{
42 
  eth_bd  *bd;
43 
  int i;
44 
 
45 
  bd = (eth_bd *)ETH_BD_BASE;
46 
 
47 855 markom 
  for(i = 0; i < ETH_TXBD_NUM; i++) {
48 809 simons 
    /* Set Tx BD status */
49 834 simons 
    bd[i].len_status = 0 << 16 | ETH_TX_BD_PAD | ETH_TX_BD_CRC | ETH_RX_BD_IRQ;
50 809 simons 
 
51 
    /* Initialize Tx buffer pointer */
52 833 simons 
    bd[i].addr = ETH_DATA_BASE + (i * ETH_MAXBUF_LEN);
53 809 simons 
  }
54 
 
55 834 simons 
  bd[i-1].len_status |= ETH_TX_BD_WRAP; // Last Tx BD - Wrap
56 809 simons 
}
57 
 
58 
void init_rx_bd_pool(void)
59 
{
60 
  eth_bd  *bd;
61 
  int i;
62 
 
63 
  bd = (eth_bd *)ETH_BD_BASE + ETH_TXBD_NUM;
64 
 
65 
  for(i = 0; i < ETH_RXBD_NUM; i++){
66 
 
67 833 simons 
    /* Set Rx BD status */
68 834 simons 
    bd[i].len_status = 0 << 16 | ETH_RX_BD_EMPTY | ETH_RX_BD_IRQ;
69 809 simons 
 
70 833 simons 
    /* Initialize Rx buffer pointer */
71 
    bd[i].addr = ETH_DATA_BASE + ((ETH_TXBD_NUM + i) * ETH_MAXBUF_LEN);
72 809 simons 
  }
73 
 
74 842 simons 
  bd[i-1].len_status |= ETH_RX_BD_WRAP; // Last Rx BD - Wrap
75 809 simons 
}
76 
 
77 855 markom 
/* Ethernet interrupt handler */
78 
void eth_int (void)
79 
{
80 
}
81 
 
82 809 simons 
void eth_init (void (*rec)(volatile unsigned char *, int))
83 
{
84 
  /* Reset ethernet core */
85 
  REG32(ETH_REG_BASE + ETH_MODER) = ETH_MODER_RST;    /* Reset ON */
86 
  REG32(ETH_REG_BASE + ETH_MODER) &= ~ETH_MODER_RST;  /* Reset OFF */
87 
 
88 
  /* Setting TX BD number */
89 1017 simons 
  REG32(ETH_REG_BASE + ETH_TX_BD_NUM) = ETH_TXBD_NUM;
90 809 simons 
 
91 1030 simons 
  // Set PHY to 10 Mbps full duplex
92 
  REG32(ETH_REG_BASE + ETH_MIIADDRESS) = 0<<8;
93 
  REG32(ETH_REG_BASE + ETH_MIITX_DATA) = 0x0100;
94 
  REG32(ETH_REG_BASE + ETH_MIICOMMAND) = ETH_MIICOMMAND_WCTRLDATA;
95 1031 simons 
  while(REG32(ETH_REG_BASE + ETH_MIISTATUS) & ETH_MIISTATUS_BUSY);
96 1030 simons 
 
97 
  while(1){
98 
    REG32(ETH_REG_BASE + ETH_MIIADDRESS) = 1<<8;
99 
    REG32(ETH_REG_BASE + ETH_MIICOMMAND) = ETH_MIICOMMAND_RSTAT;
100 1031 simons 
    while(REG32(ETH_REG_BASE + ETH_MIISTATUS) & ETH_MIISTATUS_BUSY);
101 1030 simons 
    if(REG32(ETH_REG_BASE + ETH_MIIRX_DATA) & 0x04)
102 
      break;
103 
  }
104 1031 simons 
 
105 809 simons 
  /* Set min/max packet length */
106 1029 simons 
  REG32(ETH_REG_BASE + ETH_PACKETLEN) = 0x00400600;
107 809 simons 
 
108 
  /* Set IPGT register to recomended value */
109 
  REG32(ETH_REG_BASE + ETH_IPGT) =  0x00000012;
110 
 
111 
  /* Set IPGR1 register to recomended value */
112 
  REG32(ETH_REG_BASE + ETH_IPGR1) =  0x0000000c;
113 
 
114 
  /* Set IPGR2 register to recomended value */
115 
  REG32(ETH_REG_BASE + ETH_IPGR2) =  0x00000012;
116 
 
117 
  /* Set COLLCONF register to recomended value */
118 833 simons 
  REG32(ETH_REG_BASE + ETH_COLLCONF) =  0x000f003f;
119 809 simons 
 
120 
#if 0
121 
  REG32(ETH_REG_BASE + ETH_CTRLMODER) = OETH_CTRLMODER_TXFLOW | OETH_CTRLMODER_RXFLOW;
122 
#else
123 
  REG32(ETH_REG_BASE + ETH_CTRLMODER) = 0;
124 
#endif
125 
 
126 
  /* Initialize RX and TX buffer descriptors */
127 
  init_rx_bd_pool();
128 
  init_tx_bd_pool();
129 
 
130 
  /* Initialize tx pointers */
131 
  tx_next = 0;
132 
  tx_last = 0;
133 
  tx_full = 0;
134 
 
135 
  /* Initialize rx pointers */
136 
  rx_next = 0;
137 
  receive = rec;
138 
 
139 
  /* Set local MAC address */
140 
  REG32(ETH_REG_BASE + ETH_MAC_ADDR1) = ETH_MACADDR0 << 8 |
141 
            ETH_MACADDR1;
142 
  REG32(ETH_REG_BASE + ETH_MAC_ADDR0) = ETH_MACADDR2 << 24 |
143 
            ETH_MACADDR3 << 16 |
144 
            ETH_MACADDR4 << 8 |
145 
            ETH_MACADDR5;
146 
 
147 
  /* Clear all pending interrupts */
148 
  REG32(ETH_REG_BASE + ETH_INT) = 0xffffffff;
149 
 
150 
  /* Promisc, IFG, CRCEn */
151 
  REG32(ETH_REG_BASE + ETH_MODER) |= ETH_MODER_PAD | ETH_MODER_IFG | ETH_MODER_CRCEN;
152 
 
153 
  /* Enable interrupt sources */
154 
#if 0
155 
  regs->int_mask = ETH_INT_MASK_TXB        |
156 
                   ETH_INT_MASK_TXE        |
157 
                   ETH_INT_MASK_RXF        |
158 
                   ETH_INT_MASK_RXE        |
159 
                   ETH_INT_MASK_BUSY       |
160 
                   ETH_INT_MASK_TXC        |
161 
                   ETH_INT_MASK_RXC;
162 833 simons 
#else
163 
  REG32(ETH_REG_BASE + ETH_INT_MASK) = 0x00000000;
164 809 simons 
#endif
165 
 
166 
  /* Enable receiver and transmiter */
167 
  REG32(ETH_REG_BASE + ETH_MODER) |= ETH_MODER_RXEN | ETH_MODER_TXEN;
168 
 
169 855 markom 
  /* Register interrupt handler */
170 
  int_add (ETH_IRQ, eth_int);
171 809 simons 
}
172 
 
173 
/* Returns pointer to next free buffer; NULL if none available */
174 
void *eth_get_tx_buf ()
175 
{
176 
  eth_bd  *bd;
177 
  unsigned long add;
178 
 
179 
  if(tx_full)
180 
    return (void *)0;
181 
 
182 
  bd = (eth_bd *)ETH_BD_BASE;
183 
 
184 834 simons 
  if(bd[tx_next].len_status & ETH_TX_BD_READY)
185 809 simons 
    return (void *)0;
186 
 
187 
  add = bd[tx_next].addr;
188 
 
189 
  tx_next = (tx_next + 1) & ETH_TXBD_NUM_MASK;
190 
 
191 
  if(tx_next == tx_last)
192 
    tx_full = 1;
193 
 
194 
  return (void *)add;
195 
}
196 
 
197 
/* Send a packet at address */
198 
void eth_send (void *buf, unsigned long len)
199 
{
200 
  eth_bd  *bd;
201 
 
202 
  bd = (eth_bd *)ETH_BD_BASE;
203 
 
204 
  bd[tx_last].addr = (unsigned long)buf;
205 834 simons 
  bd[tx_last].len_status &= 0x0000ffff & ~ETH_TX_BD_STATS;
206 
  bd[tx_last].len_status |= len << 16 | ETH_TX_BD_READY;
207 809 simons 
 
208 
  tx_last = (tx_last + 1) & ETH_TXBD_NUM_MASK;
209 
  tx_full = 0;
210 
}
211 
 
212 
/* Waits for packet and pass it to the upper layers */
213 
unsigned long eth_rx (void)
214 
{
215 
  eth_bd  *bd;
216 
  unsigned long len = 0;
217 
 
218 
  bd = (eth_bd *)ETH_BD_BASE + ETH_TXBD_NUM;
219 
 
220 
  while(1) {
221 
 
222 
    int bad = 0;
223 
 
224 834 simons 
    if(bd[rx_next].len_status & ETH_RX_BD_EMPTY)
225 809 simons 
      return len;
226 
 
227 834 simons 
    if(bd[rx_next].len_status & ETH_RX_BD_OVERRUN) {
228 809 simons 
      printf("eth rx: ETH_RX_BD_OVERRUN\n");
229 
      bad = 1;
230 
    }
231 834 simons 
    if(bd[rx_next].len_status & ETH_RX_BD_INVSIMB) {
232 809 simons 
      printf("eth rx: ETH_RX_BD_INVSIMB\n");
233 
      bad = 1;
234 
    }
235 834 simons 
    if(bd[rx_next].len_status & ETH_RX_BD_DRIBBLE) {
236 809 simons 
      printf("eth rx: ETH_RX_BD_DRIBBLE\n");
237 
      bad = 1;
238 
    }
239 834 simons 
    if(bd[rx_next].len_status & ETH_RX_BD_TOOLONG) {
240 809 simons 
      printf("eth rx: ETH_RX_BD_TOOLONG\n");
241 
      bad = 1;
242 
    }
243 834 simons 
    if(bd[rx_next].len_status & ETH_RX_BD_SHORT) {
244 809 simons 
      printf("eth rx: ETH_RX_BD_SHORT\n");
245 
      bad = 1;
246 
    }
247 834 simons 
    if(bd[rx_next].len_status & ETH_RX_BD_CRCERR) {
248 809 simons 
      printf("eth rx: ETH_RX_BD_CRCERR\n");
249 
      bad = 1;
250 
    }
251 834 simons 
    if(bd[rx_next].len_status & ETH_RX_BD_LATECOL) {
252 809 simons 
      printf("eth rx: ETH_RX_BD_LATECOL\n");
253 
      bad = 1;
254 
    }
255 
 
256 
    if(!bad) {
257 834 simons 
      receive((void *)bd[rx_next].addr, bd[rx_next].len_status >> 16);
258 
      len += bd[rx_next].len_status >> 16;
259 809 simons 
    }
260 
 
261 834 simons 
    bd[rx_next].len_status &= ~ETH_RX_BD_STATS;
262 
    bd[rx_next].len_status |= ETH_RX_BD_EMPTY;
263 809 simons 
 
264 
    rx_next = (rx_next + 1) & ETH_RXBD_NUM_MASK;
265 
  }
266 
}
267 
 
268 
void eth_int_enable(void)
269 
{
270 
  REG32(ETH_REG_BASE + ETH_INT_MASK) =  ETH_INT_MASK_TXB        |
271 
                                        ETH_INT_MASK_TXE        |
272 
                                        ETH_INT_MASK_RXF        |
273 
                                        ETH_INT_MASK_RXE        |
274 
                                        ETH_INT_MASK_BUSY       |
275 
                                        ETH_INT_MASK_TXC        |
276 
                                        ETH_INT_MASK_RXC;
277 
}
278 
 
279 
void eth_halt(void)
280 
{
281 
  /* Enable receiver and transmiter */
282 
  REG32(ETH_REG_BASE + ETH_MODER) &= ~(ETH_MODER_RXEN | ETH_MODER_TXEN);
283 
}
284 1495 jcastillo 
#endif

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