6 * Converted to DMA API, added zero-copy buffer handling, and
7 * (from the mac68k project) introduced dhd's support for 16-bit cards.
9 * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
11 * This driver is based on work from Andreas Busse, but most of
12 * the code is rewritten.
14 * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
16 * Core code included by system sonic drivers
18 * And... partially rewritten again by David Huggins-Daines in order
19 * to cope with screwed up Macintosh NICs that may or may not use
22 * (C) 1999 David Huggins-Daines <dhd@debian.org>
27 * Sources: Olivetti M700-10 Risc Personal Computer hardware handbook,
28 * National Semiconductors data sheet for the DP83932B Sonic Ethernet
29 * controller, and the files "8390.c" and "skeleton.c" in this directory.
31 * Additional sources: Nat Semi data sheet for the DP83932C and Nat Semi
32 * Application Note AN-746, the files "lance.c" and "ibmlana.c". See also
33 * the NetBSD file "sys/arch/mac68k/dev/if_sn.c".
39 * Open/initialize the SONIC controller.
41 * This routine should set everything up anew at each open, even
42 * registers that "should" only need to be set once at boot, so that
43 * there is non-reboot way to recover if something goes wrong.
45 static int sonic_open(struct net_device *dev)
47 struct sonic_local *lp = netdev_priv(dev);
51 printk("sonic_open: initializing sonic driver.\n");
54 * We don't need to deal with auto-irq stuff since we
55 * hardwire the sonic interrupt.
58 * XXX Horrible work around: We install sonic_interrupt as fast interrupt.
59 * This means that during execution of the handler interrupt are disabled
60 * covering another bug otherwise corrupting data. This doesn't mean
61 * this glue works ok under all situations.
63 * Note (dhd): this also appears to prevent lockups on the Macintrash
64 * when more than one Ethernet card is installed (knock on wood)
66 * Note (fthain): whether the above is still true is anyones guess. Certainly
67 * the buffer handling algorithms will not tolerate re-entrance without some
68 * mutual exclusion added. Anyway, the memcpy has now been eliminated from the
69 * rx code to make this a faster "fast interrupt".
71 if (request_irq(dev->irq, &sonic_interrupt, SONIC_IRQ_FLAG, "sonic", dev)) {
72 printk(KERN_ERR "\n%s: unable to get IRQ %d .\n", dev->name, dev->irq);
76 for (i = 0; i < SONIC_NUM_RRS; i++) {
77 struct sk_buff *skb = dev_alloc_skb(SONIC_RBSIZE + 2);
79 while(i > 0) { /* free any that were allocated successfully */
81 dev_kfree_skb(lp->rx_skb[i]);
84 printk(KERN_ERR "%s: couldn't allocate receive buffers\n",
88 /* align IP header unless DMA requires otherwise */
89 if (SONIC_BUS_SCALE(lp->dma_bitmode) == 2)
94 for (i = 0; i < SONIC_NUM_RRS; i++) {
95 dma_addr_t laddr = dma_map_single(lp->device, skb_put(lp->rx_skb[i], SONIC_RBSIZE),
96 SONIC_RBSIZE, DMA_FROM_DEVICE);
98 while(i > 0) { /* free any that were mapped successfully */
100 dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE);
101 lp->rx_laddr[i] = (dma_addr_t)0;
103 for (i = 0; i < SONIC_NUM_RRS; i++) {
104 dev_kfree_skb(lp->rx_skb[i]);
105 lp->rx_skb[i] = NULL;
107 printk(KERN_ERR "%s: couldn't map rx DMA buffers\n",
111 lp->rx_laddr[i] = laddr;
115 * Initialize the SONIC
119 netif_start_queue(dev);
122 printk("sonic_open: Initialization done.\n");
129 * Close the SONIC device
131 static int sonic_close(struct net_device *dev)
133 struct sonic_local *lp = netdev_priv(dev);
137 printk("sonic_close\n");
139 netif_stop_queue(dev);
142 * stop the SONIC, disable interrupts
144 SONIC_WRITE(SONIC_IMR, 0);
145 SONIC_WRITE(SONIC_ISR, 0x7fff);
146 SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
148 /* unmap and free skbs that haven't been transmitted */
149 for (i = 0; i < SONIC_NUM_TDS; i++) {
150 if(lp->tx_laddr[i]) {
151 dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE);
152 lp->tx_laddr[i] = (dma_addr_t)0;
155 dev_kfree_skb(lp->tx_skb[i]);
156 lp->tx_skb[i] = NULL;
160 /* unmap and free the receive buffers */
161 for (i = 0; i < SONIC_NUM_RRS; i++) {
162 if(lp->rx_laddr[i]) {
163 dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE);
164 lp->rx_laddr[i] = (dma_addr_t)0;
167 dev_kfree_skb(lp->rx_skb[i]);
168 lp->rx_skb[i] = NULL;
172 free_irq(dev->irq, dev); /* release the IRQ */
177 static void sonic_tx_timeout(struct net_device *dev)
179 struct sonic_local *lp = netdev_priv(dev);
182 * put the Sonic into software-reset mode and
183 * disable all interrupts before releasing DMA buffers
185 SONIC_WRITE(SONIC_IMR, 0);
186 SONIC_WRITE(SONIC_ISR, 0x7fff);
187 SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
188 /* We could resend the original skbs. Easier to re-initialise. */
189 for (i = 0; i < SONIC_NUM_TDS; i++) {
190 if(lp->tx_laddr[i]) {
191 dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE);
192 lp->tx_laddr[i] = (dma_addr_t)0;
195 dev_kfree_skb(lp->tx_skb[i]);
196 lp->tx_skb[i] = NULL;
199 /* Try to restart the adaptor. */
201 lp->stats.tx_errors++;
202 dev->trans_start = jiffies;
203 netif_wake_queue(dev);
209 * Appends new TD during transmission thus avoiding any TX interrupts
210 * until we run out of TDs.
211 * This routine interacts closely with the ISR in that it may,
213 * reset the status flags of the new TD
214 * set and reset EOL flags
216 * The ISR interacts with this routine in various ways. It may,
218 * test the EOL and status flags of the TDs
220 * Concurrently with all of this, the SONIC is potentially writing to
221 * the status flags of the TDs.
222 * Until some mutual exclusion is added, this code will not work with SMP. However,
223 * MIPS Jazz machines and m68k Macs were all uni-processor machines.
226 static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
228 struct sonic_local *lp = netdev_priv(dev);
231 int entry = lp->next_tx;
234 printk("sonic_send_packet: skb=%p, dev=%p\n", skb, dev);
237 if (length < ETH_ZLEN) {
238 if (skb_padto(skb, ETH_ZLEN))
244 * Map the packet data into the logical DMA address space
247 laddr = dma_map_single(lp->device, skb->data, length, DMA_TO_DEVICE);
249 printk(KERN_ERR "%s: failed to map tx DMA buffer.\n", dev->name);
254 sonic_tda_put(dev, entry, SONIC_TD_STATUS, 0); /* clear status */
255 sonic_tda_put(dev, entry, SONIC_TD_FRAG_COUNT, 1); /* single fragment */
256 sonic_tda_put(dev, entry, SONIC_TD_PKTSIZE, length); /* length of packet */
257 sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_L, laddr & 0xffff);
258 sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_H, laddr >> 16);
259 sonic_tda_put(dev, entry, SONIC_TD_FRAG_SIZE, length);
260 sonic_tda_put(dev, entry, SONIC_TD_LINK,
261 sonic_tda_get(dev, entry, SONIC_TD_LINK) | SONIC_EOL);
264 * Must set tx_skb[entry] only after clearing status, and
265 * before clearing EOL and before stopping queue
268 lp->tx_len[entry] = length;
269 lp->tx_laddr[entry] = laddr;
270 lp->tx_skb[entry] = skb;
273 sonic_tda_put(dev, lp->eol_tx, SONIC_TD_LINK,
274 sonic_tda_get(dev, lp->eol_tx, SONIC_TD_LINK) & ~SONIC_EOL);
277 lp->next_tx = (entry + 1) & SONIC_TDS_MASK;
278 if (lp->tx_skb[lp->next_tx] != NULL) {
279 /* The ring is full, the ISR has yet to process the next TD. */
281 printk("%s: stopping queue\n", dev->name);
282 netif_stop_queue(dev);
283 /* after this packet, wait for ISR to free up some TDAs */
284 } else netif_start_queue(dev);
287 printk("sonic_send_packet: issuing Tx command\n");
289 SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP);
291 dev->trans_start = jiffies;
297 * The typical workload of the driver:
298 * Handle the network interface interrupts.
300 static irqreturn_t sonic_interrupt(int irq, void *dev_id)
302 struct net_device *dev = dev_id;
303 struct sonic_local *lp = netdev_priv(dev);
306 if (!(status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT))
310 if (status & SONIC_INT_PKTRX) {
312 printk("%s: packet rx\n", dev->name);
313 sonic_rx(dev); /* got packet(s) */
314 SONIC_WRITE(SONIC_ISR, SONIC_INT_PKTRX); /* clear the interrupt */
317 if (status & SONIC_INT_TXDN) {
318 int entry = lp->cur_tx;
322 /* At this point, cur_tx is the index of a TD that is one of:
323 * unallocated/freed (status set & tx_skb[entry] clear)
324 * allocated and sent (status set & tx_skb[entry] set )
325 * allocated and not yet sent (status clear & tx_skb[entry] set )
326 * still being allocated by sonic_send_packet (status clear & tx_skb[entry] clear)
330 printk("%s: tx done\n", dev->name);
332 while (lp->tx_skb[entry] != NULL) {
333 if ((td_status = sonic_tda_get(dev, entry, SONIC_TD_STATUS)) == 0)
336 if (td_status & 0x0001) {
337 lp->stats.tx_packets++;
338 lp->stats.tx_bytes += sonic_tda_get(dev, entry, SONIC_TD_PKTSIZE);
340 lp->stats.tx_errors++;
341 if (td_status & 0x0642)
342 lp->stats.tx_aborted_errors++;
343 if (td_status & 0x0180)
344 lp->stats.tx_carrier_errors++;
345 if (td_status & 0x0020)
346 lp->stats.tx_window_errors++;
347 if (td_status & 0x0004)
348 lp->stats.tx_fifo_errors++;
351 /* We must free the original skb */
352 dev_kfree_skb_irq(lp->tx_skb[entry]);
353 lp->tx_skb[entry] = NULL;
354 /* and unmap DMA buffer */
355 dma_unmap_single(lp->device, lp->tx_laddr[entry], lp->tx_len[entry], DMA_TO_DEVICE);
356 lp->tx_laddr[entry] = (dma_addr_t)0;
359 if (sonic_tda_get(dev, entry, SONIC_TD_LINK) & SONIC_EOL) {
360 entry = (entry + 1) & SONIC_TDS_MASK;
363 entry = (entry + 1) & SONIC_TDS_MASK;
366 if (freed_some || lp->tx_skb[entry] == NULL)
367 netif_wake_queue(dev); /* The ring is no longer full */
369 SONIC_WRITE(SONIC_ISR, SONIC_INT_TXDN); /* clear the interrupt */
373 * check error conditions
375 if (status & SONIC_INT_RFO) {
377 printk("%s: rx fifo overrun\n", dev->name);
378 lp->stats.rx_fifo_errors++;
379 SONIC_WRITE(SONIC_ISR, SONIC_INT_RFO); /* clear the interrupt */
381 if (status & SONIC_INT_RDE) {
383 printk("%s: rx descriptors exhausted\n", dev->name);
384 lp->stats.rx_dropped++;
385 SONIC_WRITE(SONIC_ISR, SONIC_INT_RDE); /* clear the interrupt */
387 if (status & SONIC_INT_RBAE) {
389 printk("%s: rx buffer area exceeded\n", dev->name);
390 lp->stats.rx_dropped++;
391 SONIC_WRITE(SONIC_ISR, SONIC_INT_RBAE); /* clear the interrupt */
394 /* counter overruns; all counters are 16bit wide */
395 if (status & SONIC_INT_FAE) {
396 lp->stats.rx_frame_errors += 65536;
397 SONIC_WRITE(SONIC_ISR, SONIC_INT_FAE); /* clear the interrupt */
399 if (status & SONIC_INT_CRC) {
400 lp->stats.rx_crc_errors += 65536;
401 SONIC_WRITE(SONIC_ISR, SONIC_INT_CRC); /* clear the interrupt */
403 if (status & SONIC_INT_MP) {
404 lp->stats.rx_missed_errors += 65536;
405 SONIC_WRITE(SONIC_ISR, SONIC_INT_MP); /* clear the interrupt */
409 if (status & SONIC_INT_TXER) {
410 if ((SONIC_READ(SONIC_TCR) & SONIC_TCR_FU) && (sonic_debug > 2))
411 printk(KERN_ERR "%s: tx fifo underrun\n", dev->name);
412 SONIC_WRITE(SONIC_ISR, SONIC_INT_TXER); /* clear the interrupt */
416 if (status & SONIC_INT_BR) {
417 printk(KERN_ERR "%s: Bus retry occurred! Device interrupt disabled.\n",
419 /* ... to help debug DMA problems causing endless interrupts. */
420 /* Bounce the eth interface to turn on the interrupt again. */
421 SONIC_WRITE(SONIC_IMR, 0);
422 SONIC_WRITE(SONIC_ISR, SONIC_INT_BR); /* clear the interrupt */
426 if (status & SONIC_INT_LCD)
427 SONIC_WRITE(SONIC_ISR, SONIC_INT_LCD); /* clear the interrupt */
428 } while((status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT));
433 * We have a good packet(s), pass it/them up the network stack.
435 static void sonic_rx(struct net_device *dev)
437 struct sonic_local *lp = netdev_priv(dev);
439 int entry = lp->cur_rx;
441 while (sonic_rda_get(dev, entry, SONIC_RD_IN_USE) == 0) {
442 struct sk_buff *used_skb;
443 struct sk_buff *new_skb;
444 dma_addr_t new_laddr;
449 status = sonic_rda_get(dev, entry, SONIC_RD_STATUS);
450 if (status & SONIC_RCR_PRX) {
451 /* Malloc up new buffer. */
452 new_skb = dev_alloc_skb(SONIC_RBSIZE + 2);
453 if (new_skb == NULL) {
454 printk(KERN_ERR "%s: Memory squeeze, dropping packet.\n", dev->name);
455 lp->stats.rx_dropped++;
458 /* provide 16 byte IP header alignment unless DMA requires otherwise */
459 if(SONIC_BUS_SCALE(lp->dma_bitmode) == 2)
460 skb_reserve(new_skb, 2);
462 new_laddr = dma_map_single(lp->device, skb_put(new_skb, SONIC_RBSIZE),
463 SONIC_RBSIZE, DMA_FROM_DEVICE);
465 dev_kfree_skb(new_skb);
466 printk(KERN_ERR "%s: Failed to map rx buffer, dropping packet.\n", dev->name);
467 lp->stats.rx_dropped++;
471 /* now we have a new skb to replace it, pass the used one up the stack */
472 dma_unmap_single(lp->device, lp->rx_laddr[entry], SONIC_RBSIZE, DMA_FROM_DEVICE);
473 used_skb = lp->rx_skb[entry];
474 pkt_len = sonic_rda_get(dev, entry, SONIC_RD_PKTLEN);
475 skb_trim(used_skb, pkt_len);
476 used_skb->protocol = eth_type_trans(used_skb, dev);
478 dev->last_rx = jiffies;
479 lp->stats.rx_packets++;
480 lp->stats.rx_bytes += pkt_len;
482 /* and insert the new skb */
483 lp->rx_laddr[entry] = new_laddr;
484 lp->rx_skb[entry] = new_skb;
486 bufadr_l = (unsigned long)new_laddr & 0xffff;
487 bufadr_h = (unsigned long)new_laddr >> 16;
488 sonic_rra_put(dev, entry, SONIC_RR_BUFADR_L, bufadr_l);
489 sonic_rra_put(dev, entry, SONIC_RR_BUFADR_H, bufadr_h);
491 /* This should only happen, if we enable accepting broken packets. */
492 lp->stats.rx_errors++;
493 if (status & SONIC_RCR_FAER)
494 lp->stats.rx_frame_errors++;
495 if (status & SONIC_RCR_CRCR)
496 lp->stats.rx_crc_errors++;
498 if (status & SONIC_RCR_LPKT) {
500 * this was the last packet out of the current receive buffer
501 * give the buffer back to the SONIC
503 lp->cur_rwp += SIZEOF_SONIC_RR * SONIC_BUS_SCALE(lp->dma_bitmode);
504 if (lp->cur_rwp >= lp->rra_end) lp->cur_rwp = lp->rra_laddr & 0xffff;
505 SONIC_WRITE(SONIC_RWP, lp->cur_rwp);
506 if (SONIC_READ(SONIC_ISR) & SONIC_INT_RBE) {
508 printk("%s: rx buffer exhausted\n", dev->name);
509 SONIC_WRITE(SONIC_ISR, SONIC_INT_RBE); /* clear the flag */
512 printk(KERN_ERR "%s: rx desc without RCR_LPKT. Shouldn't happen !?\n",
515 * give back the descriptor
517 sonic_rda_put(dev, entry, SONIC_RD_LINK,
518 sonic_rda_get(dev, entry, SONIC_RD_LINK) | SONIC_EOL);
519 sonic_rda_put(dev, entry, SONIC_RD_IN_USE, 1);
520 sonic_rda_put(dev, lp->eol_rx, SONIC_RD_LINK,
521 sonic_rda_get(dev, lp->eol_rx, SONIC_RD_LINK) & ~SONIC_EOL);
523 lp->cur_rx = entry = (entry + 1) & SONIC_RDS_MASK;
526 * If any worth-while packets have been received, netif_rx()
527 * has done a mark_bh(NET_BH) for us and will work on them
528 * when we get to the bottom-half routine.
534 * Get the current statistics.
535 * This may be called with the device open or closed.
537 static struct net_device_stats *sonic_get_stats(struct net_device *dev)
539 struct sonic_local *lp = netdev_priv(dev);
541 /* read the tally counter from the SONIC and reset them */
542 lp->stats.rx_crc_errors += SONIC_READ(SONIC_CRCT);
543 SONIC_WRITE(SONIC_CRCT, 0xffff);
544 lp->stats.rx_frame_errors += SONIC_READ(SONIC_FAET);
545 SONIC_WRITE(SONIC_FAET, 0xffff);
546 lp->stats.rx_missed_errors += SONIC_READ(SONIC_MPT);
547 SONIC_WRITE(SONIC_MPT, 0xffff);
554 * Set or clear the multicast filter for this adaptor.
556 static void sonic_multicast_list(struct net_device *dev)
558 struct sonic_local *lp = netdev_priv(dev);
560 struct dev_mc_list *dmi = dev->mc_list;
564 rcr = SONIC_READ(SONIC_RCR) & ~(SONIC_RCR_PRO | SONIC_RCR_AMC);
565 rcr |= SONIC_RCR_BRD; /* accept broadcast packets */
567 if (dev->flags & IFF_PROMISC) { /* set promiscuous mode */
568 rcr |= SONIC_RCR_PRO;
570 if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 15)) {
571 rcr |= SONIC_RCR_AMC;
574 printk("sonic_multicast_list: mc_count %d\n", dev->mc_count);
575 sonic_set_cam_enable(dev, 1); /* always enable our own address */
576 for (i = 1; i <= dev->mc_count; i++) {
577 addr = dmi->dmi_addr;
579 sonic_cda_put(dev, i, SONIC_CD_CAP0, addr[1] << 8 | addr[0]);
580 sonic_cda_put(dev, i, SONIC_CD_CAP1, addr[3] << 8 | addr[2]);
581 sonic_cda_put(dev, i, SONIC_CD_CAP2, addr[5] << 8 | addr[4]);
582 sonic_set_cam_enable(dev, sonic_get_cam_enable(dev) | (1 << i));
584 SONIC_WRITE(SONIC_CDC, 16);
585 /* issue Load CAM command */
586 SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff);
587 SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM);
592 printk("sonic_multicast_list: setting RCR=%x\n", rcr);
594 SONIC_WRITE(SONIC_RCR, rcr);
599 * Initialize the SONIC ethernet controller.
601 static int sonic_init(struct net_device *dev)
604 struct sonic_local *lp = netdev_priv(dev);
608 * put the Sonic into software-reset mode and
609 * disable all interrupts
611 SONIC_WRITE(SONIC_IMR, 0);
612 SONIC_WRITE(SONIC_ISR, 0x7fff);
613 SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
616 * clear software reset flag, disable receiver, clear and
617 * enable interrupts, then completely initialize the SONIC
619 SONIC_WRITE(SONIC_CMD, 0);
620 SONIC_WRITE(SONIC_CMD, SONIC_CR_RXDIS);
623 * initialize the receive resource area
626 printk("sonic_init: initialize receive resource area\n");
628 for (i = 0; i < SONIC_NUM_RRS; i++) {
629 u16 bufadr_l = (unsigned long)lp->rx_laddr[i] & 0xffff;
630 u16 bufadr_h = (unsigned long)lp->rx_laddr[i] >> 16;
631 sonic_rra_put(dev, i, SONIC_RR_BUFADR_L, bufadr_l);
632 sonic_rra_put(dev, i, SONIC_RR_BUFADR_H, bufadr_h);
633 sonic_rra_put(dev, i, SONIC_RR_BUFSIZE_L, SONIC_RBSIZE >> 1);
634 sonic_rra_put(dev, i, SONIC_RR_BUFSIZE_H, 0);
637 /* initialize all RRA registers */
638 lp->rra_end = (lp->rra_laddr + SONIC_NUM_RRS * SIZEOF_SONIC_RR *
639 SONIC_BUS_SCALE(lp->dma_bitmode)) & 0xffff;
640 lp->cur_rwp = (lp->rra_laddr + (SONIC_NUM_RRS - 1) * SIZEOF_SONIC_RR *
641 SONIC_BUS_SCALE(lp->dma_bitmode)) & 0xffff;
643 SONIC_WRITE(SONIC_RSA, lp->rra_laddr & 0xffff);
644 SONIC_WRITE(SONIC_REA, lp->rra_end);
645 SONIC_WRITE(SONIC_RRP, lp->rra_laddr & 0xffff);
646 SONIC_WRITE(SONIC_RWP, lp->cur_rwp);
647 SONIC_WRITE(SONIC_URRA, lp->rra_laddr >> 16);
648 SONIC_WRITE(SONIC_EOBC, (SONIC_RBSIZE >> 1) - (lp->dma_bitmode ? 2 : 1));
650 /* load the resource pointers */
652 printk("sonic_init: issuing RRRA command\n");
654 SONIC_WRITE(SONIC_CMD, SONIC_CR_RRRA);
657 if (SONIC_READ(SONIC_CMD) & SONIC_CR_RRRA)
662 printk("sonic_init: status=%x i=%d\n", SONIC_READ(SONIC_CMD), i);
665 * Initialize the receive descriptors so that they
666 * become a circular linked list, ie. let the last
667 * descriptor point to the first again.
670 printk("sonic_init: initialize receive descriptors\n");
671 for (i=0; i<SONIC_NUM_RDS; i++) {
672 sonic_rda_put(dev, i, SONIC_RD_STATUS, 0);
673 sonic_rda_put(dev, i, SONIC_RD_PKTLEN, 0);
674 sonic_rda_put(dev, i, SONIC_RD_PKTPTR_L, 0);
675 sonic_rda_put(dev, i, SONIC_RD_PKTPTR_H, 0);
676 sonic_rda_put(dev, i, SONIC_RD_SEQNO, 0);
677 sonic_rda_put(dev, i, SONIC_RD_IN_USE, 1);
678 sonic_rda_put(dev, i, SONIC_RD_LINK,
680 ((i+1) * SIZEOF_SONIC_RD * SONIC_BUS_SCALE(lp->dma_bitmode)));
682 /* fix last descriptor */
683 sonic_rda_put(dev, SONIC_NUM_RDS - 1, SONIC_RD_LINK,
684 (lp->rda_laddr & 0xffff) | SONIC_EOL);
685 lp->eol_rx = SONIC_NUM_RDS - 1;
687 SONIC_WRITE(SONIC_URDA, lp->rda_laddr >> 16);
688 SONIC_WRITE(SONIC_CRDA, lp->rda_laddr & 0xffff);
691 * initialize transmit descriptors
694 printk("sonic_init: initialize transmit descriptors\n");
695 for (i = 0; i < SONIC_NUM_TDS; i++) {
696 sonic_tda_put(dev, i, SONIC_TD_STATUS, 0);
697 sonic_tda_put(dev, i, SONIC_TD_CONFIG, 0);
698 sonic_tda_put(dev, i, SONIC_TD_PKTSIZE, 0);
699 sonic_tda_put(dev, i, SONIC_TD_FRAG_COUNT, 0);
700 sonic_tda_put(dev, i, SONIC_TD_LINK,
701 (lp->tda_laddr & 0xffff) +
702 (i + 1) * SIZEOF_SONIC_TD * SONIC_BUS_SCALE(lp->dma_bitmode));
703 lp->tx_skb[i] = NULL;
705 /* fix last descriptor */
706 sonic_tda_put(dev, SONIC_NUM_TDS - 1, SONIC_TD_LINK,
707 (lp->tda_laddr & 0xffff));
709 SONIC_WRITE(SONIC_UTDA, lp->tda_laddr >> 16);
710 SONIC_WRITE(SONIC_CTDA, lp->tda_laddr & 0xffff);
711 lp->cur_tx = lp->next_tx = 0;
712 lp->eol_tx = SONIC_NUM_TDS - 1;
715 * put our own address to CAM desc[0]
717 sonic_cda_put(dev, 0, SONIC_CD_CAP0, dev->dev_addr[1] << 8 | dev->dev_addr[0]);
718 sonic_cda_put(dev, 0, SONIC_CD_CAP1, dev->dev_addr[3] << 8 | dev->dev_addr[2]);
719 sonic_cda_put(dev, 0, SONIC_CD_CAP2, dev->dev_addr[5] << 8 | dev->dev_addr[4]);
720 sonic_set_cam_enable(dev, 1);
722 for (i = 0; i < 16; i++)
723 sonic_cda_put(dev, i, SONIC_CD_ENTRY_POINTER, i);
726 * initialize CAM registers
728 SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff);
729 SONIC_WRITE(SONIC_CDC, 16);
734 SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM);
738 if (SONIC_READ(SONIC_ISR) & SONIC_INT_LCD)
741 if (sonic_debug > 2) {
742 printk("sonic_init: CMD=%x, ISR=%x\n, i=%d",
743 SONIC_READ(SONIC_CMD), SONIC_READ(SONIC_ISR), i);
747 * enable receiver, disable loopback
748 * and enable all interrupts
750 SONIC_WRITE(SONIC_CMD, SONIC_CR_RXEN | SONIC_CR_STP);
751 SONIC_WRITE(SONIC_RCR, SONIC_RCR_DEFAULT);
752 SONIC_WRITE(SONIC_TCR, SONIC_TCR_DEFAULT);
753 SONIC_WRITE(SONIC_ISR, 0x7fff);
754 SONIC_WRITE(SONIC_IMR, SONIC_IMR_DEFAULT);
756 cmd = SONIC_READ(SONIC_CMD);
757 if ((cmd & SONIC_CR_RXEN) == 0 || (cmd & SONIC_CR_STP) == 0)
758 printk(KERN_ERR "sonic_init: failed, status=%x\n", cmd);
761 printk("sonic_init: new status=%x\n",
762 SONIC_READ(SONIC_CMD));
767 MODULE_LICENSE("GPL");