Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * sonic.c | |
3 | * | |
4 | * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de) | |
5 | * | |
6 | * This driver is based on work from Andreas Busse, but most of | |
7 | * the code is rewritten. | |
8 | * | |
9 | * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de) | |
10 | * | |
11 | * Core code included by system sonic drivers | |
12 | */ | |
13 | ||
14 | /* | |
15 | * Sources: Olivetti M700-10 Risc Personal Computer hardware handbook, | |
16 | * National Semiconductors data sheet for the DP83932B Sonic Ethernet | |
17 | * controller, and the files "8390.c" and "skeleton.c" in this directory. | |
18 | */ | |
19 | ||
20 | ||
21 | ||
22 | /* | |
23 | * Open/initialize the SONIC controller. | |
24 | * | |
25 | * This routine should set everything up anew at each open, even | |
26 | * registers that "should" only need to be set once at boot, so that | |
27 | * there is non-reboot way to recover if something goes wrong. | |
28 | */ | |
29 | static int sonic_open(struct net_device *dev) | |
30 | { | |
31 | if (sonic_debug > 2) | |
32 | printk("sonic_open: initializing sonic driver.\n"); | |
33 | ||
34 | /* | |
35 | * We don't need to deal with auto-irq stuff since we | |
36 | * hardwire the sonic interrupt. | |
37 | */ | |
38 | /* | |
39 | * XXX Horrible work around: We install sonic_interrupt as fast interrupt. | |
40 | * This means that during execution of the handler interrupt are disabled | |
41 | * covering another bug otherwise corrupting data. This doesn't mean | |
42 | * this glue works ok under all situations. | |
43 | */ | |
44 | // if (sonic_request_irq(dev->irq, &sonic_interrupt, 0, "sonic", dev)) { | |
45 | if (sonic_request_irq(dev->irq, &sonic_interrupt, SA_INTERRUPT, | |
46 | "sonic", dev)) { | |
47 | printk("\n%s: unable to get IRQ %d .\n", dev->name, dev->irq); | |
48 | return -EAGAIN; | |
49 | } | |
50 | ||
51 | /* | |
52 | * Initialize the SONIC | |
53 | */ | |
54 | sonic_init(dev); | |
55 | ||
56 | netif_start_queue(dev); | |
57 | ||
58 | if (sonic_debug > 2) | |
59 | printk("sonic_open: Initialization done.\n"); | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
64 | ||
65 | /* | |
66 | * Close the SONIC device | |
67 | */ | |
68 | static int sonic_close(struct net_device *dev) | |
69 | { | |
70 | unsigned int base_addr = dev->base_addr; | |
71 | ||
72 | if (sonic_debug > 2) | |
73 | printk("sonic_close\n"); | |
74 | ||
75 | netif_stop_queue(dev); | |
76 | ||
77 | /* | |
78 | * stop the SONIC, disable interrupts | |
79 | */ | |
80 | SONIC_WRITE(SONIC_ISR, 0x7fff); | |
81 | SONIC_WRITE(SONIC_IMR, 0); | |
82 | SONIC_WRITE(SONIC_CMD, SONIC_CR_RST); | |
83 | ||
84 | sonic_free_irq(dev->irq, dev); /* release the IRQ */ | |
85 | ||
86 | return 0; | |
87 | } | |
88 | ||
89 | static void sonic_tx_timeout(struct net_device *dev) | |
90 | { | |
91 | struct sonic_local *lp = (struct sonic_local *) dev->priv; | |
92 | printk("%s: transmit timed out.\n", dev->name); | |
93 | ||
94 | /* Try to restart the adaptor. */ | |
95 | sonic_init(dev); | |
96 | lp->stats.tx_errors++; | |
97 | dev->trans_start = jiffies; | |
98 | netif_wake_queue(dev); | |
99 | } | |
100 | ||
101 | /* | |
102 | * transmit packet | |
103 | */ | |
104 | static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev) | |
105 | { | |
106 | struct sonic_local *lp = (struct sonic_local *) dev->priv; | |
107 | unsigned int base_addr = dev->base_addr; | |
108 | unsigned int laddr; | |
109 | int entry, length; | |
110 | ||
111 | netif_stop_queue(dev); | |
112 | ||
113 | if (sonic_debug > 2) | |
114 | printk("sonic_send_packet: skb=%p, dev=%p\n", skb, dev); | |
115 | ||
116 | /* | |
117 | * Map the packet data into the logical DMA address space | |
118 | */ | |
119 | if ((laddr = vdma_alloc(CPHYSADDR(skb->data), skb->len)) == ~0UL) { | |
120 | printk("%s: no VDMA entry for transmit available.\n", | |
121 | dev->name); | |
122 | dev_kfree_skb(skb); | |
123 | netif_start_queue(dev); | |
124 | return 1; | |
125 | } | |
126 | entry = lp->cur_tx & SONIC_TDS_MASK; | |
127 | lp->tx_laddr[entry] = laddr; | |
128 | lp->tx_skb[entry] = skb; | |
129 | ||
130 | length = (skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len; | |
131 | flush_cache_all(); | |
132 | ||
133 | /* | |
134 | * Setup the transmit descriptor and issue the transmit command. | |
135 | */ | |
136 | lp->tda[entry].tx_status = 0; /* clear status */ | |
137 | lp->tda[entry].tx_frag_count = 1; /* single fragment */ | |
138 | lp->tda[entry].tx_pktsize = length; /* length of packet */ | |
139 | lp->tda[entry].tx_frag_ptr_l = laddr & 0xffff; | |
140 | lp->tda[entry].tx_frag_ptr_h = laddr >> 16; | |
141 | lp->tda[entry].tx_frag_size = length; | |
142 | lp->cur_tx++; | |
143 | lp->stats.tx_bytes += length; | |
144 | ||
145 | if (sonic_debug > 2) | |
146 | printk("sonic_send_packet: issueing Tx command\n"); | |
147 | ||
148 | SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP); | |
149 | ||
150 | dev->trans_start = jiffies; | |
151 | ||
152 | if (lp->cur_tx < lp->dirty_tx + SONIC_NUM_TDS) | |
153 | netif_start_queue(dev); | |
154 | else | |
155 | lp->tx_full = 1; | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
160 | /* | |
161 | * The typical workload of the driver: | |
162 | * Handle the network interface interrupts. | |
163 | */ | |
164 | static irqreturn_t sonic_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
165 | { | |
166 | struct net_device *dev = (struct net_device *) dev_id; | |
167 | unsigned int base_addr = dev->base_addr; | |
168 | struct sonic_local *lp; | |
169 | int status; | |
170 | ||
171 | if (dev == NULL) { | |
172 | printk("sonic_interrupt: irq %d for unknown device.\n", irq); | |
173 | return IRQ_NONE; | |
174 | } | |
175 | ||
176 | lp = (struct sonic_local *) dev->priv; | |
177 | ||
178 | status = SONIC_READ(SONIC_ISR); | |
179 | SONIC_WRITE(SONIC_ISR, 0x7fff); /* clear all bits */ | |
180 | ||
181 | if (sonic_debug > 2) | |
182 | printk("sonic_interrupt: ISR=%x\n", status); | |
183 | ||
184 | if (status & SONIC_INT_PKTRX) { | |
185 | sonic_rx(dev); /* got packet(s) */ | |
186 | } | |
187 | ||
188 | if (status & SONIC_INT_TXDN) { | |
189 | int dirty_tx = lp->dirty_tx; | |
190 | ||
191 | while (dirty_tx < lp->cur_tx) { | |
192 | int entry = dirty_tx & SONIC_TDS_MASK; | |
193 | int status = lp->tda[entry].tx_status; | |
194 | ||
195 | if (sonic_debug > 3) | |
196 | printk | |
197 | ("sonic_interrupt: status %d, cur_tx %d, dirty_tx %d\n", | |
198 | status, lp->cur_tx, lp->dirty_tx); | |
199 | ||
200 | if (status == 0) { | |
201 | /* It still hasn't been Txed, kick the sonic again */ | |
202 | SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP); | |
203 | break; | |
204 | } | |
205 | ||
206 | /* put back EOL and free descriptor */ | |
207 | lp->tda[entry].tx_frag_count = 0; | |
208 | lp->tda[entry].tx_status = 0; | |
209 | ||
210 | if (status & 0x0001) | |
211 | lp->stats.tx_packets++; | |
212 | else { | |
213 | lp->stats.tx_errors++; | |
214 | if (status & 0x0642) | |
215 | lp->stats.tx_aborted_errors++; | |
216 | if (status & 0x0180) | |
217 | lp->stats.tx_carrier_errors++; | |
218 | if (status & 0x0020) | |
219 | lp->stats.tx_window_errors++; | |
220 | if (status & 0x0004) | |
221 | lp->stats.tx_fifo_errors++; | |
222 | } | |
223 | ||
224 | /* We must free the original skb */ | |
225 | if (lp->tx_skb[entry]) { | |
226 | dev_kfree_skb_irq(lp->tx_skb[entry]); | |
227 | lp->tx_skb[entry] = 0; | |
228 | } | |
229 | /* and the VDMA address */ | |
230 | vdma_free(lp->tx_laddr[entry]); | |
231 | dirty_tx++; | |
232 | } | |
233 | ||
234 | if (lp->tx_full | |
235 | && dirty_tx + SONIC_NUM_TDS > lp->cur_tx + 2) { | |
236 | /* The ring is no longer full, clear tbusy. */ | |
237 | lp->tx_full = 0; | |
238 | netif_wake_queue(dev); | |
239 | } | |
240 | ||
241 | lp->dirty_tx = dirty_tx; | |
242 | } | |
243 | ||
244 | /* | |
245 | * check error conditions | |
246 | */ | |
247 | if (status & SONIC_INT_RFO) { | |
248 | printk("%s: receive fifo underrun\n", dev->name); | |
249 | lp->stats.rx_fifo_errors++; | |
250 | } | |
251 | if (status & SONIC_INT_RDE) { | |
252 | printk("%s: receive descriptors exhausted\n", dev->name); | |
253 | lp->stats.rx_dropped++; | |
254 | } | |
255 | if (status & SONIC_INT_RBE) { | |
256 | printk("%s: receive buffer exhausted\n", dev->name); | |
257 | lp->stats.rx_dropped++; | |
258 | } | |
259 | if (status & SONIC_INT_RBAE) { | |
260 | printk("%s: receive buffer area exhausted\n", dev->name); | |
261 | lp->stats.rx_dropped++; | |
262 | } | |
263 | ||
264 | /* counter overruns; all counters are 16bit wide */ | |
265 | if (status & SONIC_INT_FAE) | |
266 | lp->stats.rx_frame_errors += 65536; | |
267 | if (status & SONIC_INT_CRC) | |
268 | lp->stats.rx_crc_errors += 65536; | |
269 | if (status & SONIC_INT_MP) | |
270 | lp->stats.rx_missed_errors += 65536; | |
271 | ||
272 | /* transmit error */ | |
273 | if (status & SONIC_INT_TXER) | |
274 | lp->stats.tx_errors++; | |
275 | ||
276 | /* | |
277 | * clear interrupt bits and return | |
278 | */ | |
279 | SONIC_WRITE(SONIC_ISR, status); | |
280 | return IRQ_HANDLED; | |
281 | } | |
282 | ||
283 | /* | |
284 | * We have a good packet(s), get it/them out of the buffers. | |
285 | */ | |
286 | static void sonic_rx(struct net_device *dev) | |
287 | { | |
288 | unsigned int base_addr = dev->base_addr; | |
289 | struct sonic_local *lp = (struct sonic_local *) dev->priv; | |
290 | sonic_rd_t *rd = &lp->rda[lp->cur_rx & SONIC_RDS_MASK]; | |
291 | int status; | |
292 | ||
293 | while (rd->in_use == 0) { | |
294 | struct sk_buff *skb; | |
295 | int pkt_len; | |
296 | unsigned char *pkt_ptr; | |
297 | ||
298 | status = rd->rx_status; | |
299 | if (sonic_debug > 3) | |
300 | printk("status %x, cur_rx %d, cur_rra %x\n", | |
301 | status, lp->cur_rx, lp->cur_rra); | |
302 | if (status & SONIC_RCR_PRX) { | |
303 | pkt_len = rd->rx_pktlen; | |
304 | pkt_ptr = | |
305 | (char *) | |
306 | sonic_chiptomem((rd->rx_pktptr_h << 16) + | |
307 | rd->rx_pktptr_l); | |
308 | ||
309 | if (sonic_debug > 3) | |
310 | printk | |
311 | ("pktptr %p (rba %p) h:%x l:%x, bsize h:%x l:%x\n", | |
312 | pkt_ptr, lp->rba, rd->rx_pktptr_h, | |
313 | rd->rx_pktptr_l, | |
314 | SONIC_READ(SONIC_RBWC1), | |
315 | SONIC_READ(SONIC_RBWC0)); | |
316 | ||
317 | /* Malloc up new buffer. */ | |
318 | skb = dev_alloc_skb(pkt_len + 2); | |
319 | if (skb == NULL) { | |
320 | printk | |
321 | ("%s: Memory squeeze, dropping packet.\n", | |
322 | dev->name); | |
323 | lp->stats.rx_dropped++; | |
324 | break; | |
325 | } | |
326 | skb->dev = dev; | |
327 | skb_reserve(skb, 2); /* 16 byte align */ | |
328 | skb_put(skb, pkt_len); /* Make room */ | |
329 | eth_copy_and_sum(skb, pkt_ptr, pkt_len, 0); | |
330 | skb->protocol = eth_type_trans(skb, dev); | |
331 | netif_rx(skb); /* pass the packet to upper layers */ | |
332 | dev->last_rx = jiffies; | |
333 | lp->stats.rx_packets++; | |
334 | lp->stats.rx_bytes += pkt_len; | |
335 | ||
336 | } else { | |
337 | /* This should only happen, if we enable accepting broken packets. */ | |
338 | lp->stats.rx_errors++; | |
339 | if (status & SONIC_RCR_FAER) | |
340 | lp->stats.rx_frame_errors++; | |
341 | if (status & SONIC_RCR_CRCR) | |
342 | lp->stats.rx_crc_errors++; | |
343 | } | |
344 | ||
345 | rd->in_use = 1; | |
346 | rd = &lp->rda[(++lp->cur_rx) & SONIC_RDS_MASK]; | |
347 | /* now give back the buffer to the receive buffer area */ | |
348 | if (status & SONIC_RCR_LPKT) { | |
349 | /* | |
350 | * this was the last packet out of the current receice buffer | |
351 | * give the buffer back to the SONIC | |
352 | */ | |
353 | lp->cur_rra += sizeof(sonic_rr_t); | |
354 | if (lp->cur_rra > | |
355 | (lp->rra_laddr + | |
356 | (SONIC_NUM_RRS - | |
357 | 1) * sizeof(sonic_rr_t))) lp->cur_rra = | |
358 | lp->rra_laddr; | |
359 | SONIC_WRITE(SONIC_RWP, lp->cur_rra & 0xffff); | |
360 | } else | |
361 | printk | |
362 | ("%s: rx desc without RCR_LPKT. Shouldn't happen !?\n", | |
363 | dev->name); | |
364 | } | |
365 | /* | |
366 | * If any worth-while packets have been received, dev_rint() | |
367 | * has done a mark_bh(NET_BH) for us and will work on them | |
368 | * when we get to the bottom-half routine. | |
369 | */ | |
370 | } | |
371 | ||
372 | ||
373 | /* | |
374 | * Get the current statistics. | |
375 | * This may be called with the device open or closed. | |
376 | */ | |
377 | static struct net_device_stats *sonic_get_stats(struct net_device *dev) | |
378 | { | |
379 | struct sonic_local *lp = (struct sonic_local *) dev->priv; | |
380 | unsigned int base_addr = dev->base_addr; | |
381 | ||
382 | /* read the tally counter from the SONIC and reset them */ | |
383 | lp->stats.rx_crc_errors += SONIC_READ(SONIC_CRCT); | |
384 | SONIC_WRITE(SONIC_CRCT, 0xffff); | |
385 | lp->stats.rx_frame_errors += SONIC_READ(SONIC_FAET); | |
386 | SONIC_WRITE(SONIC_FAET, 0xffff); | |
387 | lp->stats.rx_missed_errors += SONIC_READ(SONIC_MPT); | |
388 | SONIC_WRITE(SONIC_MPT, 0xffff); | |
389 | ||
390 | return &lp->stats; | |
391 | } | |
392 | ||
393 | ||
394 | /* | |
395 | * Set or clear the multicast filter for this adaptor. | |
396 | */ | |
397 | static void sonic_multicast_list(struct net_device *dev) | |
398 | { | |
399 | struct sonic_local *lp = (struct sonic_local *) dev->priv; | |
400 | unsigned int base_addr = dev->base_addr; | |
401 | unsigned int rcr; | |
402 | struct dev_mc_list *dmi = dev->mc_list; | |
403 | unsigned char *addr; | |
404 | int i; | |
405 | ||
406 | rcr = SONIC_READ(SONIC_RCR) & ~(SONIC_RCR_PRO | SONIC_RCR_AMC); | |
407 | rcr |= SONIC_RCR_BRD; /* accept broadcast packets */ | |
408 | ||
409 | if (dev->flags & IFF_PROMISC) { /* set promiscuous mode */ | |
410 | rcr |= SONIC_RCR_PRO; | |
411 | } else { | |
412 | if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 15)) { | |
413 | rcr |= SONIC_RCR_AMC; | |
414 | } else { | |
415 | if (sonic_debug > 2) | |
416 | printk | |
417 | ("sonic_multicast_list: mc_count %d\n", | |
418 | dev->mc_count); | |
419 | lp->cda.cam_enable = 1; /* always enable our own address */ | |
420 | for (i = 1; i <= dev->mc_count; i++) { | |
421 | addr = dmi->dmi_addr; | |
422 | dmi = dmi->next; | |
423 | lp->cda.cam_desc[i].cam_cap0 = | |
424 | addr[1] << 8 | addr[0]; | |
425 | lp->cda.cam_desc[i].cam_cap1 = | |
426 | addr[3] << 8 | addr[2]; | |
427 | lp->cda.cam_desc[i].cam_cap2 = | |
428 | addr[5] << 8 | addr[4]; | |
429 | lp->cda.cam_enable |= (1 << i); | |
430 | } | |
431 | SONIC_WRITE(SONIC_CDC, 16); | |
432 | /* issue Load CAM command */ | |
433 | SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff); | |
434 | SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM); | |
435 | } | |
436 | } | |
437 | ||
438 | if (sonic_debug > 2) | |
439 | printk("sonic_multicast_list: setting RCR=%x\n", rcr); | |
440 | ||
441 | SONIC_WRITE(SONIC_RCR, rcr); | |
442 | } | |
443 | ||
444 | ||
445 | /* | |
446 | * Initialize the SONIC ethernet controller. | |
447 | */ | |
448 | static int sonic_init(struct net_device *dev) | |
449 | { | |
450 | unsigned int base_addr = dev->base_addr; | |
451 | unsigned int cmd; | |
452 | struct sonic_local *lp = (struct sonic_local *) dev->priv; | |
453 | unsigned int rra_start; | |
454 | unsigned int rra_end; | |
455 | int i; | |
456 | ||
457 | /* | |
458 | * put the Sonic into software-reset mode and | |
459 | * disable all interrupts | |
460 | */ | |
461 | SONIC_WRITE(SONIC_ISR, 0x7fff); | |
462 | SONIC_WRITE(SONIC_IMR, 0); | |
463 | SONIC_WRITE(SONIC_CMD, SONIC_CR_RST); | |
464 | ||
465 | /* | |
466 | * clear software reset flag, disable receiver, clear and | |
467 | * enable interrupts, then completely initialize the SONIC | |
468 | */ | |
469 | SONIC_WRITE(SONIC_CMD, 0); | |
470 | SONIC_WRITE(SONIC_CMD, SONIC_CR_RXDIS); | |
471 | ||
472 | /* | |
473 | * initialize the receive resource area | |
474 | */ | |
475 | if (sonic_debug > 2) | |
476 | printk("sonic_init: initialize receive resource area\n"); | |
477 | ||
478 | rra_start = lp->rra_laddr & 0xffff; | |
479 | rra_end = | |
480 | (rra_start + (SONIC_NUM_RRS * sizeof(sonic_rr_t))) & 0xffff; | |
481 | ||
482 | for (i = 0; i < SONIC_NUM_RRS; i++) { | |
483 | lp->rra[i].rx_bufadr_l = | |
484 | (lp->rba_laddr + i * SONIC_RBSIZE) & 0xffff; | |
485 | lp->rra[i].rx_bufadr_h = | |
486 | (lp->rba_laddr + i * SONIC_RBSIZE) >> 16; | |
487 | lp->rra[i].rx_bufsize_l = SONIC_RBSIZE >> 1; | |
488 | lp->rra[i].rx_bufsize_h = 0; | |
489 | } | |
490 | ||
491 | /* initialize all RRA registers */ | |
492 | SONIC_WRITE(SONIC_RSA, rra_start); | |
493 | SONIC_WRITE(SONIC_REA, rra_end); | |
494 | SONIC_WRITE(SONIC_RRP, rra_start); | |
495 | SONIC_WRITE(SONIC_RWP, rra_end); | |
496 | SONIC_WRITE(SONIC_URRA, lp->rra_laddr >> 16); | |
497 | SONIC_WRITE(SONIC_EOBC, (SONIC_RBSIZE - 2) >> 1); | |
498 | ||
499 | lp->cur_rra = | |
500 | lp->rra_laddr + (SONIC_NUM_RRS - 1) * sizeof(sonic_rr_t); | |
501 | ||
502 | /* load the resource pointers */ | |
503 | if (sonic_debug > 3) | |
504 | printk("sonic_init: issueing RRRA command\n"); | |
505 | ||
506 | SONIC_WRITE(SONIC_CMD, SONIC_CR_RRRA); | |
507 | i = 0; | |
508 | while (i++ < 100) { | |
509 | if (SONIC_READ(SONIC_CMD) & SONIC_CR_RRRA) | |
510 | break; | |
511 | } | |
512 | ||
513 | if (sonic_debug > 2) | |
514 | printk("sonic_init: status=%x\n", SONIC_READ(SONIC_CMD)); | |
515 | ||
516 | /* | |
517 | * Initialize the receive descriptors so that they | |
518 | * become a circular linked list, ie. let the last | |
519 | * descriptor point to the first again. | |
520 | */ | |
521 | if (sonic_debug > 2) | |
522 | printk("sonic_init: initialize receive descriptors\n"); | |
523 | for (i = 0; i < SONIC_NUM_RDS; i++) { | |
524 | lp->rda[i].rx_status = 0; | |
525 | lp->rda[i].rx_pktlen = 0; | |
526 | lp->rda[i].rx_pktptr_l = 0; | |
527 | lp->rda[i].rx_pktptr_h = 0; | |
528 | lp->rda[i].rx_seqno = 0; | |
529 | lp->rda[i].in_use = 1; | |
530 | lp->rda[i].link = | |
531 | lp->rda_laddr + (i + 1) * sizeof(sonic_rd_t); | |
532 | } | |
533 | /* fix last descriptor */ | |
534 | lp->rda[SONIC_NUM_RDS - 1].link = lp->rda_laddr; | |
535 | lp->cur_rx = 0; | |
536 | SONIC_WRITE(SONIC_URDA, lp->rda_laddr >> 16); | |
537 | SONIC_WRITE(SONIC_CRDA, lp->rda_laddr & 0xffff); | |
538 | ||
539 | /* | |
540 | * initialize transmit descriptors | |
541 | */ | |
542 | if (sonic_debug > 2) | |
543 | printk("sonic_init: initialize transmit descriptors\n"); | |
544 | for (i = 0; i < SONIC_NUM_TDS; i++) { | |
545 | lp->tda[i].tx_status = 0; | |
546 | lp->tda[i].tx_config = 0; | |
547 | lp->tda[i].tx_pktsize = 0; | |
548 | lp->tda[i].tx_frag_count = 0; | |
549 | lp->tda[i].link = | |
550 | (lp->tda_laddr + | |
551 | (i + 1) * sizeof(sonic_td_t)) | SONIC_END_OF_LINKS; | |
552 | } | |
553 | lp->tda[SONIC_NUM_TDS - 1].link = | |
554 | (lp->tda_laddr & 0xffff) | SONIC_END_OF_LINKS; | |
555 | ||
556 | SONIC_WRITE(SONIC_UTDA, lp->tda_laddr >> 16); | |
557 | SONIC_WRITE(SONIC_CTDA, lp->tda_laddr & 0xffff); | |
558 | lp->cur_tx = lp->dirty_tx = 0; | |
559 | ||
560 | /* | |
561 | * put our own address to CAM desc[0] | |
562 | */ | |
563 | lp->cda.cam_desc[0].cam_cap0 = | |
564 | dev->dev_addr[1] << 8 | dev->dev_addr[0]; | |
565 | lp->cda.cam_desc[0].cam_cap1 = | |
566 | dev->dev_addr[3] << 8 | dev->dev_addr[2]; | |
567 | lp->cda.cam_desc[0].cam_cap2 = | |
568 | dev->dev_addr[5] << 8 | dev->dev_addr[4]; | |
569 | lp->cda.cam_enable = 1; | |
570 | ||
571 | for (i = 0; i < 16; i++) | |
572 | lp->cda.cam_desc[i].cam_entry_pointer = i; | |
573 | ||
574 | /* | |
575 | * initialize CAM registers | |
576 | */ | |
577 | SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff); | |
578 | SONIC_WRITE(SONIC_CDC, 16); | |
579 | ||
580 | /* | |
581 | * load the CAM | |
582 | */ | |
583 | SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM); | |
584 | ||
585 | i = 0; | |
586 | while (i++ < 100) { | |
587 | if (SONIC_READ(SONIC_ISR) & SONIC_INT_LCD) | |
588 | break; | |
589 | } | |
590 | if (sonic_debug > 2) { | |
591 | printk("sonic_init: CMD=%x, ISR=%x\n", | |
592 | SONIC_READ(SONIC_CMD), SONIC_READ(SONIC_ISR)); | |
593 | } | |
594 | ||
595 | /* | |
596 | * enable receiver, disable loopback | |
597 | * and enable all interrupts | |
598 | */ | |
599 | SONIC_WRITE(SONIC_CMD, SONIC_CR_RXEN | SONIC_CR_STP); | |
600 | SONIC_WRITE(SONIC_RCR, SONIC_RCR_DEFAULT); | |
601 | SONIC_WRITE(SONIC_TCR, SONIC_TCR_DEFAULT); | |
602 | SONIC_WRITE(SONIC_ISR, 0x7fff); | |
603 | SONIC_WRITE(SONIC_IMR, SONIC_IMR_DEFAULT); | |
604 | ||
605 | cmd = SONIC_READ(SONIC_CMD); | |
606 | if ((cmd & SONIC_CR_RXEN) == 0 || (cmd & SONIC_CR_STP) == 0) | |
607 | printk("sonic_init: failed, status=%x\n", cmd); | |
608 | ||
609 | if (sonic_debug > 2) | |
610 | printk("sonic_init: new status=%x\n", | |
611 | SONIC_READ(SONIC_CMD)); | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
616 | MODULE_LICENSE("GPL"); |