1 | /* $NetBSD: dp8390.c,v 1.85 2016/06/10 13:27:13 ozaki-r Exp $ */ |
2 | |
3 | /* |
4 | * Device driver for National Semiconductor DS8390/WD83C690 based ethernet |
5 | * adapters. |
6 | * |
7 | * Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved. |
8 | * |
9 | * Copyright (C) 1993, David Greenman. This software may be used, modified, |
10 | * copied, distributed, and sold, in both source and binary form provided that |
11 | * the above copyright and these terms are retained. Under no circumstances is |
12 | * the author responsible for the proper functioning of this software, nor does |
13 | * the author assume any responsibility for damages incurred with its use. |
14 | */ |
15 | |
16 | #include <sys/cdefs.h> |
17 | __KERNEL_RCSID(0, "$NetBSD: dp8390.c,v 1.85 2016/06/10 13:27:13 ozaki-r Exp $" ); |
18 | |
19 | #include "opt_ipkdb.h" |
20 | #include "opt_inet.h" |
21 | |
22 | #include <sys/param.h> |
23 | #include <sys/systm.h> |
24 | #include <sys/device.h> |
25 | #include <sys/errno.h> |
26 | #include <sys/ioctl.h> |
27 | #include <sys/mbuf.h> |
28 | #include <sys/socket.h> |
29 | #include <sys/syslog.h> |
30 | |
31 | #include <sys/rndsource.h> |
32 | |
33 | #include <net/if.h> |
34 | #include <net/if_dl.h> |
35 | #include <net/if_types.h> |
36 | #include <net/if_media.h> |
37 | #include <net/if_ether.h> |
38 | |
39 | #ifdef INET |
40 | #include <netinet/in.h> |
41 | #include <netinet/in_systm.h> |
42 | #include <netinet/in_var.h> |
43 | #include <netinet/ip.h> |
44 | #include <netinet/if_inarp.h> |
45 | #endif |
46 | |
47 | |
48 | #include <net/bpf.h> |
49 | #include <net/bpfdesc.h> |
50 | |
51 | #include <sys/bus.h> |
52 | |
53 | #ifdef IPKDB_DP8390 |
54 | #include <ipkdb/ipkdb.h> |
55 | #endif |
56 | |
57 | #include <dev/ic/dp8390reg.h> |
58 | #include <dev/ic/dp8390var.h> |
59 | |
60 | #ifdef DEBUG |
61 | int dp8390_debug = 0; |
62 | #endif |
63 | |
64 | static void dp8390_xmit(struct dp8390_softc *); |
65 | |
66 | static void dp8390_read_hdr(struct dp8390_softc *, int, struct dp8390_ring *); |
67 | static int dp8390_ring_copy(struct dp8390_softc *, int, void *, u_short); |
68 | static int dp8390_write_mbuf(struct dp8390_softc *, struct mbuf *, int); |
69 | |
70 | static int dp8390_test_mem(struct dp8390_softc *); |
71 | |
72 | /* |
73 | * Standard media init routine for the dp8390. |
74 | */ |
75 | void |
76 | dp8390_media_init(struct dp8390_softc *sc) |
77 | { |
78 | |
79 | ifmedia_init(&sc->sc_media, 0, dp8390_mediachange, dp8390_mediastatus); |
80 | ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL); |
81 | ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL); |
82 | } |
83 | |
84 | /* |
85 | * Do bus-independent setup. |
86 | */ |
87 | int |
88 | dp8390_config(struct dp8390_softc *sc) |
89 | { |
90 | struct ifnet *ifp = &sc->sc_ec.ec_if; |
91 | int rv; |
92 | |
93 | rv = 1; |
94 | |
95 | if (sc->test_mem == NULL) |
96 | sc->test_mem = dp8390_test_mem; |
97 | if (sc->read_hdr == NULL) |
98 | sc->read_hdr = dp8390_read_hdr; |
99 | if (sc->recv_int == NULL) |
100 | sc->recv_int = dp8390_rint; |
101 | if (sc->ring_copy == NULL) |
102 | sc->ring_copy = dp8390_ring_copy; |
103 | if (sc->write_mbuf == NULL) |
104 | sc->write_mbuf = dp8390_write_mbuf; |
105 | |
106 | /* Allocate one xmit buffer if < 16k, two buffers otherwise. */ |
107 | if ((sc->mem_size < 16384) || |
108 | (sc->sc_flags & DP8390_NO_MULTI_BUFFERING)) |
109 | sc->txb_cnt = 1; |
110 | else if (sc->mem_size < 8192 * 3) |
111 | sc->txb_cnt = 2; |
112 | else |
113 | sc->txb_cnt = 3; |
114 | |
115 | sc->tx_page_start = sc->mem_start >> ED_PAGE_SHIFT; |
116 | sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE; |
117 | sc->rec_page_stop = sc->tx_page_start + (sc->mem_size >> ED_PAGE_SHIFT); |
118 | sc->mem_ring = sc->mem_start + |
119 | ((sc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); |
120 | sc->mem_end = sc->mem_start + sc->mem_size; |
121 | |
122 | /* Now zero memory and verify that it is clear. */ |
123 | if ((*sc->test_mem)(sc)) |
124 | goto out; |
125 | |
126 | /* Set interface to stopped condition (reset). */ |
127 | dp8390_stop(sc); |
128 | |
129 | /* Initialize ifnet structure. */ |
130 | strcpy(ifp->if_xname, device_xname(sc->sc_dev)); |
131 | ifp->if_softc = sc; |
132 | ifp->if_start = dp8390_start; |
133 | ifp->if_ioctl = dp8390_ioctl; |
134 | if (ifp->if_watchdog == NULL) |
135 | ifp->if_watchdog = dp8390_watchdog; |
136 | ifp->if_flags = |
137 | IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; |
138 | IFQ_SET_READY(&ifp->if_snd); |
139 | |
140 | /* Print additional info when attached. */ |
141 | aprint_normal_dev(sc->sc_dev, "Ethernet address %s\n" , |
142 | ether_sprintf(sc->sc_enaddr)); |
143 | |
144 | /* Initialize media goo. */ |
145 | (*sc->sc_media_init)(sc); |
146 | |
147 | /* |
148 | * We can support 802.1Q VLAN-sized frames. |
149 | */ |
150 | sc->sc_ec.ec_capabilities |= ETHERCAP_VLAN_MTU; |
151 | |
152 | /* Attach the interface. */ |
153 | if_attach(ifp); |
154 | ether_ifattach(ifp, sc->sc_enaddr); |
155 | |
156 | rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), |
157 | RND_TYPE_NET, RND_FLAG_DEFAULT); |
158 | |
159 | /* The attach is successful. */ |
160 | sc->sc_flags |= DP8390_ATTACHED; |
161 | |
162 | rv = 0; |
163 | out: |
164 | return rv; |
165 | } |
166 | |
167 | /* |
168 | * Media change callback. |
169 | */ |
170 | int |
171 | dp8390_mediachange(struct ifnet *ifp) |
172 | { |
173 | struct dp8390_softc *sc = ifp->if_softc; |
174 | |
175 | if (sc->sc_mediachange) |
176 | return (*sc->sc_mediachange)(sc); |
177 | return 0; |
178 | } |
179 | |
180 | /* |
181 | * Media status callback. |
182 | */ |
183 | void |
184 | dp8390_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) |
185 | { |
186 | struct dp8390_softc *sc = ifp->if_softc; |
187 | |
188 | if (sc->sc_enabled == 0) { |
189 | ifmr->ifm_active = IFM_ETHER | IFM_NONE; |
190 | ifmr->ifm_status = 0; |
191 | return; |
192 | } |
193 | |
194 | if (sc->sc_mediastatus) |
195 | (*sc->sc_mediastatus)(sc, ifmr); |
196 | } |
197 | |
198 | /* |
199 | * Reset interface. |
200 | */ |
201 | void |
202 | dp8390_reset(struct dp8390_softc *sc) |
203 | { |
204 | int s; |
205 | |
206 | s = splnet(); |
207 | dp8390_stop(sc); |
208 | dp8390_init(sc); |
209 | splx(s); |
210 | } |
211 | |
212 | /* |
213 | * Take interface offline. |
214 | */ |
215 | void |
216 | dp8390_stop(struct dp8390_softc *sc) |
217 | { |
218 | bus_space_tag_t regt = sc->sc_regt; |
219 | bus_space_handle_t regh = sc->sc_regh; |
220 | int n = 5000; |
221 | |
222 | /* Stop everything on the interface, and select page 0 registers. */ |
223 | NIC_BARRIER(regt, regh); |
224 | NIC_PUT(regt, regh, ED_P0_CR, |
225 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); |
226 | NIC_BARRIER(regt, regh); |
227 | |
228 | /* |
229 | * Wait for interface to enter stopped state, but limit # of checks to |
230 | * 'n' (about 5ms). It shouldn't even take 5us on modern DS8390's, but |
231 | * just in case it's an old one. |
232 | */ |
233 | while (((NIC_GET(regt, regh, ED_P0_ISR) & ED_ISR_RST) == 0) && --n) |
234 | DELAY(1); |
235 | |
236 | if (sc->stop_card != NULL) |
237 | (*sc->stop_card)(sc); |
238 | } |
239 | |
240 | /* |
241 | * Device timeout/watchdog routine. Entered if the device neglects to generate |
242 | * an interrupt after a transmit has been started on it. |
243 | */ |
244 | |
245 | void |
246 | dp8390_watchdog(struct ifnet *ifp) |
247 | { |
248 | struct dp8390_softc *sc = ifp->if_softc; |
249 | |
250 | log(LOG_ERR, "%s: device timeout\n" , device_xname(sc->sc_dev)); |
251 | ++sc->sc_ec.ec_if.if_oerrors; |
252 | |
253 | dp8390_reset(sc); |
254 | } |
255 | |
256 | /* |
257 | * Initialize device. |
258 | */ |
259 | void |
260 | dp8390_init(struct dp8390_softc *sc) |
261 | { |
262 | bus_space_tag_t regt = sc->sc_regt; |
263 | bus_space_handle_t regh = sc->sc_regh; |
264 | struct ifnet *ifp = &sc->sc_ec.ec_if; |
265 | uint8_t mcaf[8]; |
266 | int i; |
267 | |
268 | /* |
269 | * Initialize the NIC in the exact order outlined in the NS manual. |
270 | * This init procedure is "mandatory"...don't change what or when |
271 | * things happen. |
272 | */ |
273 | |
274 | /* Reset transmitter flags. */ |
275 | ifp->if_timer = 0; |
276 | |
277 | sc->txb_inuse = 0; |
278 | sc->txb_new = 0; |
279 | sc->txb_next_tx = 0; |
280 | |
281 | /* Set interface for page 0, remote DMA complete, stopped. */ |
282 | NIC_BARRIER(regt, regh); |
283 | NIC_PUT(regt, regh, ED_P0_CR, |
284 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); |
285 | NIC_BARRIER(regt, regh); |
286 | |
287 | if (sc->dcr_reg & ED_DCR_LS) { |
288 | NIC_PUT(regt, regh, ED_P0_DCR, sc->dcr_reg); |
289 | } else { |
290 | /* |
291 | * Set FIFO threshold to 8, No auto-init Remote DMA, byte |
292 | * order=80x86, byte-wide DMA xfers, |
293 | */ |
294 | NIC_PUT(regt, regh, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); |
295 | } |
296 | |
297 | /* Clear remote byte count registers. */ |
298 | NIC_PUT(regt, regh, ED_P0_RBCR0, 0); |
299 | NIC_PUT(regt, regh, ED_P0_RBCR1, 0); |
300 | |
301 | /* Tell RCR to do nothing for now. */ |
302 | NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_MON | sc->rcr_proto); |
303 | |
304 | /* Place NIC in internal loopback mode. */ |
305 | NIC_PUT(regt, regh, ED_P0_TCR, ED_TCR_LB0); |
306 | |
307 | /* Set lower bits of byte addressable framing to 0. */ |
308 | if (sc->is790) |
309 | NIC_PUT(regt, regh, 0x09, 0); |
310 | |
311 | /* Initialize receive buffer ring. */ |
312 | NIC_PUT(regt, regh, ED_P0_BNRY, sc->rec_page_start); |
313 | NIC_PUT(regt, regh, ED_P0_PSTART, sc->rec_page_start); |
314 | NIC_PUT(regt, regh, ED_P0_PSTOP, sc->rec_page_stop); |
315 | |
316 | /* |
317 | * Enable the following interrupts: receive/transmit complete, |
318 | * receive/transmit error, and Receiver OverWrite. |
319 | * |
320 | * Counter overflow and Remote DMA complete are *not* enabled. |
321 | */ |
322 | NIC_PUT(regt, regh, ED_P0_IMR, |
323 | ED_IMR_PRXE | ED_IMR_PTXE | ED_IMR_RXEE | ED_IMR_TXEE | |
324 | ED_IMR_OVWE); |
325 | |
326 | /* |
327 | * Clear all interrupts. A '1' in each bit position clears the |
328 | * corresponding flag. |
329 | */ |
330 | NIC_PUT(regt, regh, ED_P0_ISR, 0xff); |
331 | |
332 | /* Program command register for page 1. */ |
333 | NIC_BARRIER(regt, regh); |
334 | NIC_PUT(regt, regh, ED_P0_CR, |
335 | sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); |
336 | NIC_BARRIER(regt, regh); |
337 | |
338 | /* Copy out our station address. */ |
339 | for (i = 0; i < ETHER_ADDR_LEN; i++) |
340 | NIC_PUT(regt, regh, ED_P1_PAR0 + i, CLLADDR(ifp->if_sadl)[i]); |
341 | |
342 | /* Set multicast filter on chip. */ |
343 | dp8390_getmcaf(&sc->sc_ec, mcaf); |
344 | for (i = 0; i < 8; i++) |
345 | NIC_PUT(regt, regh, ED_P1_MAR0 + i, mcaf[i]); |
346 | |
347 | /* |
348 | * Set current page pointer to one page after the boundary pointer, as |
349 | * recommended in the National manual. |
350 | */ |
351 | sc->next_packet = sc->rec_page_start + 1; |
352 | NIC_PUT(regt, regh, ED_P1_CURR, sc->next_packet); |
353 | |
354 | /* Program command register for page 0. */ |
355 | NIC_BARRIER(regt, regh); |
356 | NIC_PUT(regt, regh, ED_P1_CR, |
357 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); |
358 | NIC_BARRIER(regt, regh); |
359 | |
360 | /* Accept broadcast and multicast packets by default. */ |
361 | i = ED_RCR_AB | ED_RCR_AM | sc->rcr_proto; |
362 | if (ifp->if_flags & IFF_PROMISC) { |
363 | /* |
364 | * Set promiscuous mode. Multicast filter was set earlier so |
365 | * that we should receive all multicast packets. |
366 | */ |
367 | i |= ED_RCR_PRO | ED_RCR_AR | ED_RCR_SEP; |
368 | } |
369 | NIC_PUT(regt, regh, ED_P0_RCR, i); |
370 | |
371 | /* Take interface out of loopback. */ |
372 | NIC_PUT(regt, regh, ED_P0_TCR, 0); |
373 | |
374 | /* Do any card-specific initialization, if applicable. */ |
375 | if (sc->init_card != NULL) |
376 | (*sc->init_card)(sc); |
377 | |
378 | /* Fire up the interface. */ |
379 | NIC_BARRIER(regt, regh); |
380 | NIC_PUT(regt, regh, ED_P0_CR, |
381 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); |
382 | |
383 | /* Set 'running' flag, and clear output active flag. */ |
384 | ifp->if_flags |= IFF_RUNNING; |
385 | ifp->if_flags &= ~IFF_OACTIVE; |
386 | |
387 | /* ...and attempt to start output. */ |
388 | dp8390_start(ifp); |
389 | } |
390 | |
391 | /* |
392 | * This routine actually starts the transmission on the interface. |
393 | */ |
394 | static void |
395 | dp8390_xmit(struct dp8390_softc *sc) |
396 | { |
397 | bus_space_tag_t regt = sc->sc_regt; |
398 | bus_space_handle_t regh = sc->sc_regh; |
399 | struct ifnet *ifp = &sc->sc_ec.ec_if; |
400 | u_short len; |
401 | |
402 | #ifdef DIAGNOSTIC |
403 | if ((sc->txb_next_tx + sc->txb_inuse) % sc->txb_cnt != sc->txb_new) |
404 | panic("dp8390_xmit: desync, next_tx=%d inuse=%d cnt=%d new=%d" , |
405 | sc->txb_next_tx, sc->txb_inuse, sc->txb_cnt, sc->txb_new); |
406 | |
407 | if (sc->txb_inuse == 0) |
408 | panic("dp8390_xmit: no packets to xmit" ); |
409 | #endif |
410 | |
411 | len = sc->txb_len[sc->txb_next_tx]; |
412 | |
413 | /* Set NIC for page 0 register access. */ |
414 | NIC_BARRIER(regt, regh); |
415 | NIC_PUT(regt, regh, ED_P0_CR, |
416 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); |
417 | NIC_BARRIER(regt, regh); |
418 | |
419 | /* Set TX buffer start page. */ |
420 | NIC_PUT(regt, regh, ED_P0_TPSR, |
421 | sc->tx_page_start + sc->txb_next_tx * ED_TXBUF_SIZE); |
422 | |
423 | /* Set TX length. */ |
424 | NIC_PUT(regt, regh, ED_P0_TBCR0, len); |
425 | NIC_PUT(regt, regh, ED_P0_TBCR1, len >> 8); |
426 | |
427 | /* Set page 0, remote DMA complete, transmit packet, and *start*. */ |
428 | NIC_BARRIER(regt, regh); |
429 | NIC_PUT(regt, regh, ED_P0_CR, |
430 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_TXP | ED_CR_STA); |
431 | |
432 | /* Point to next transmit buffer slot and wrap if necessary. */ |
433 | if (++sc->txb_next_tx == sc->txb_cnt) |
434 | sc->txb_next_tx = 0; |
435 | |
436 | /* Set a timer just in case we never hear from the board again. */ |
437 | ifp->if_timer = 2; |
438 | } |
439 | |
440 | /* |
441 | * Start output on interface. |
442 | * We make two assumptions here: |
443 | * 1) that the current priority is set to splnet _before_ this code |
444 | * is called *and* is returned to the appropriate priority after |
445 | * return |
446 | * 2) that the IFF_OACTIVE flag is checked before this code is called |
447 | * (i.e. that the output part of the interface is idle) |
448 | */ |
449 | void |
450 | dp8390_start(struct ifnet *ifp) |
451 | { |
452 | struct dp8390_softc *sc = ifp->if_softc; |
453 | struct mbuf *m0; |
454 | int buffer; |
455 | int len; |
456 | |
457 | if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) |
458 | return; |
459 | |
460 | outloop: |
461 | /* See if there is room to put another packet in the buffer. */ |
462 | if (sc->txb_inuse == sc->txb_cnt) { |
463 | /* No room. Indicate this to the outside world and exit. */ |
464 | ifp->if_flags |= IFF_OACTIVE; |
465 | return; |
466 | } |
467 | IFQ_DEQUEUE(&ifp->if_snd, m0); |
468 | if (m0 == NULL) |
469 | return; |
470 | |
471 | /* We need to use m->m_pkthdr.len, so require the header */ |
472 | if ((m0->m_flags & M_PKTHDR) == 0) |
473 | panic("dp8390_start: no header mbuf" ); |
474 | |
475 | /* Tap off here if there is a BPF listener. */ |
476 | bpf_mtap(ifp, m0); |
477 | |
478 | /* txb_new points to next open buffer slot. */ |
479 | buffer = sc->mem_start + |
480 | ((sc->txb_new * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); |
481 | |
482 | len = (*sc->write_mbuf)(sc, m0, buffer); |
483 | |
484 | m_freem(m0); |
485 | sc->txb_len[sc->txb_new] = len; |
486 | |
487 | /* Point to next buffer slot and wrap if necessary. */ |
488 | if (++sc->txb_new == sc->txb_cnt) |
489 | sc->txb_new = 0; |
490 | |
491 | /* Start the first packet transmitting. */ |
492 | if (sc->txb_inuse++ == 0) |
493 | dp8390_xmit(sc); |
494 | |
495 | /* Loop back to the top to possibly buffer more packets. */ |
496 | goto outloop; |
497 | } |
498 | |
499 | /* |
500 | * Ethernet interface receiver interrupt. |
501 | */ |
502 | void |
503 | dp8390_rint(struct dp8390_softc *sc) |
504 | { |
505 | bus_space_tag_t regt = sc->sc_regt; |
506 | bus_space_handle_t regh = sc->sc_regh; |
507 | struct dp8390_ring packet_hdr; |
508 | int packet_ptr; |
509 | uint16_t len; |
510 | uint8_t boundary, current; |
511 | uint8_t nlen; |
512 | |
513 | loop: |
514 | /* Set NIC to page 1 registers to get 'current' pointer. */ |
515 | NIC_BARRIER(regt, regh); |
516 | NIC_PUT(regt, regh, ED_P0_CR, |
517 | sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); |
518 | NIC_BARRIER(regt, regh); |
519 | |
520 | /* |
521 | * 'sc->next_packet' is the logical beginning of the ring-buffer - i.e. |
522 | * it points to where new data has been buffered. The 'CURR' (current) |
523 | * register points to the logical end of the ring-buffer - i.e. it |
524 | * points to where additional new data will be added. We loop here |
525 | * until the logical beginning equals the logical end (or in other |
526 | * words, until the ring-buffer is empty). |
527 | */ |
528 | current = NIC_GET(regt, regh, ED_P1_CURR); |
529 | if (sc->next_packet == current) |
530 | return; |
531 | |
532 | /* Set NIC to page 0 registers to update boundary register. */ |
533 | NIC_BARRIER(regt, regh); |
534 | NIC_PUT(regt, regh, ED_P1_CR, |
535 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); |
536 | NIC_BARRIER(regt, regh); |
537 | |
538 | do { |
539 | /* Get pointer to this buffer's header structure. */ |
540 | packet_ptr = sc->mem_ring + |
541 | ((sc->next_packet - sc->rec_page_start) << ED_PAGE_SHIFT); |
542 | |
543 | (*sc->read_hdr)(sc, packet_ptr, &packet_hdr); |
544 | len = packet_hdr.count; |
545 | |
546 | /* |
547 | * Try do deal with old, buggy chips that sometimes duplicate |
548 | * the low byte of the length into the high byte. We do this |
549 | * by simply ignoring the high byte of the length and always |
550 | * recalculating it. |
551 | * |
552 | * NOTE: sc->next_packet is pointing at the current packet. |
553 | */ |
554 | if (packet_hdr.next_packet >= sc->next_packet) |
555 | nlen = (packet_hdr.next_packet - sc->next_packet); |
556 | else |
557 | nlen = ((packet_hdr.next_packet - sc->rec_page_start) + |
558 | (sc->rec_page_stop - sc->next_packet)); |
559 | --nlen; |
560 | if ((len & ED_PAGE_MASK) + sizeof(packet_hdr) > ED_PAGE_SIZE) |
561 | --nlen; |
562 | len = (len & ED_PAGE_MASK) | (nlen << ED_PAGE_SHIFT); |
563 | #ifdef DIAGNOSTIC |
564 | if (len != packet_hdr.count) { |
565 | aprint_verbose_dev(sc->sc_dev, "length does not match " |
566 | "next packet pointer\n" ); |
567 | aprint_verbose_dev(sc->sc_dev, "len %04x nlen %04x " |
568 | "start %02x first %02x curr %02x next %02x " |
569 | "stop %02x\n" , packet_hdr.count, len, |
570 | sc->rec_page_start, sc->next_packet, current, |
571 | packet_hdr.next_packet, sc->rec_page_stop); |
572 | } |
573 | #endif |
574 | |
575 | /* |
576 | * Be fairly liberal about what we allow as a "reasonable" |
577 | * length so that a [crufty] packet will make it to BPF (and |
578 | * can thus be analyzed). Note that all that is really |
579 | * important is that we have a length that will fit into one |
580 | * mbuf cluster or less; the upper layer protocols can then |
581 | * figure out the length from their own length field(s). |
582 | */ |
583 | if (len <= MCLBYTES && |
584 | packet_hdr.next_packet >= sc->rec_page_start && |
585 | packet_hdr.next_packet < sc->rec_page_stop) { |
586 | /* Go get packet. */ |
587 | dp8390_read(sc, |
588 | packet_ptr + sizeof(struct dp8390_ring), |
589 | len - sizeof(struct dp8390_ring)); |
590 | } else { |
591 | /* Really BAD. The ring pointers are corrupted. */ |
592 | log(LOG_ERR, "%s: NIC memory corrupt - " |
593 | "invalid packet length %d\n" , |
594 | device_xname(sc->sc_dev), len); |
595 | ++sc->sc_ec.ec_if.if_ierrors; |
596 | dp8390_reset(sc); |
597 | return; |
598 | } |
599 | |
600 | /* Update next packet pointer. */ |
601 | sc->next_packet = packet_hdr.next_packet; |
602 | |
603 | /* |
604 | * Update NIC boundary pointer - being careful to keep it one |
605 | * buffer behind (as recommended by NS databook). |
606 | */ |
607 | boundary = sc->next_packet - 1; |
608 | if (boundary < sc->rec_page_start) |
609 | boundary = sc->rec_page_stop - 1; |
610 | NIC_PUT(regt, regh, ED_P0_BNRY, boundary); |
611 | } while (sc->next_packet != current); |
612 | |
613 | goto loop; |
614 | } |
615 | |
616 | /* Ethernet interface interrupt processor. */ |
617 | int |
618 | dp8390_intr(void *arg) |
619 | { |
620 | struct dp8390_softc *sc = arg; |
621 | bus_space_tag_t regt = sc->sc_regt; |
622 | bus_space_handle_t regh = sc->sc_regh; |
623 | struct ifnet *ifp = &sc->sc_ec.ec_if; |
624 | uint8_t isr; |
625 | uint8_t rndisr; |
626 | |
627 | if (sc->sc_enabled == 0 || |
628 | !device_is_active(sc->sc_dev)) |
629 | return 0; |
630 | |
631 | /* Set NIC to page 0 registers. */ |
632 | NIC_BARRIER(regt, regh); |
633 | NIC_PUT(regt, regh, ED_P0_CR, |
634 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); |
635 | NIC_BARRIER(regt, regh); |
636 | |
637 | isr = NIC_GET(regt, regh, ED_P0_ISR); |
638 | if (isr == 0) |
639 | return 0; |
640 | |
641 | rndisr = isr; |
642 | |
643 | /* Loop until there are no more new interrupts. */ |
644 | for (;;) { |
645 | /* |
646 | * Reset all the bits that we are 'acknowledging' by writing a |
647 | * '1' to each bit position that was set. |
648 | * (Writing a '1' *clears* the bit.) |
649 | */ |
650 | NIC_PUT(regt, regh, ED_P0_ISR, isr); |
651 | |
652 | /* Work around for AX88190 bug */ |
653 | if ((sc->sc_flags & DP8390_DO_AX88190_WORKAROUND) != 0) |
654 | while ((NIC_GET(regt, regh, ED_P0_ISR) & isr) != 0) { |
655 | NIC_PUT(regt, regh, ED_P0_ISR, 0); |
656 | NIC_PUT(regt, regh, ED_P0_ISR, isr); |
657 | } |
658 | |
659 | /* |
660 | * Handle transmitter interrupts. Handle these first because |
661 | * the receiver will reset the board under some conditions. |
662 | * |
663 | * If the chip was reset while a packet was transmitting, it |
664 | * may still deliver a TX interrupt. In this case, just ignore |
665 | * the interrupt. |
666 | */ |
667 | if ((isr & (ED_ISR_PTX | ED_ISR_TXE)) != 0 && |
668 | sc->txb_inuse != 0) { |
669 | uint8_t collisions = |
670 | NIC_GET(regt, regh, ED_P0_NCR) & 0x0f; |
671 | |
672 | /* |
673 | * Check for transmit error. If a TX completed with an |
674 | * error, we end up throwing the packet away. Really |
675 | * the only error that is possible is excessive |
676 | * collisions, and in this case it is best to allow the |
677 | * automatic mechanisms of TCP to backoff the flow. Of |
678 | * course, with UDP we're screwed, but this is expected |
679 | * when a network is heavily loaded. |
680 | */ |
681 | if ((isr & ED_ISR_TXE) != 0) { |
682 | /* |
683 | * Excessive collisions (16). |
684 | */ |
685 | if ((NIC_GET(regt, regh, ED_P0_TSR) |
686 | & ED_TSR_ABT) && (collisions == 0)) { |
687 | /* |
688 | * When collisions total 16, the P0_NCR |
689 | * will indicate 0, and the TSR_ABT is |
690 | * set. |
691 | */ |
692 | collisions = 16; |
693 | } |
694 | |
695 | /* Update output errors counter. */ |
696 | ++ifp->if_oerrors; |
697 | } else { |
698 | /* |
699 | * Throw away the non-error status bits. |
700 | * |
701 | * XXX |
702 | * It may be useful to detect loss of carrier |
703 | * and late collisions here. |
704 | */ |
705 | (void)NIC_GET(regt, regh, ED_P0_TSR); |
706 | |
707 | /* |
708 | * Update total number of successfully |
709 | * transmitted packets. |
710 | */ |
711 | ++ifp->if_opackets; |
712 | } |
713 | |
714 | /* Clear watchdog timer. */ |
715 | ifp->if_timer = 0; |
716 | ifp->if_flags &= ~IFF_OACTIVE; |
717 | |
718 | /* |
719 | * Add in total number of collisions on last |
720 | * transmission. |
721 | */ |
722 | ifp->if_collisions += collisions; |
723 | |
724 | /* |
725 | * Decrement buffer in-use count if not zero (can only |
726 | * be zero if a transmitter interrupt occurred while not |
727 | * actually transmitting). |
728 | * If data is ready to transmit, start it transmitting, |
729 | * otherwise defer until after handling receiver. |
730 | */ |
731 | if (--sc->txb_inuse != 0) |
732 | dp8390_xmit(sc); |
733 | } |
734 | |
735 | /* Handle receiver interrupts. */ |
736 | if ((isr & (ED_ISR_PRX | ED_ISR_RXE | ED_ISR_OVW)) != 0) { |
737 | /* |
738 | * Overwrite warning. In order to make sure that a |
739 | * lockup of the local DMA hasn't occurred, we reset |
740 | * and re-init the NIC. The NSC manual suggests only a |
741 | * partial reset/re-init is necessary - but some chips |
742 | * seem to want more. The DMA lockup has been seen |
743 | * only with early rev chips - Methinks this bug was |
744 | * fixed in later revs. -DG |
745 | */ |
746 | if ((isr & ED_ISR_OVW) != 0) { |
747 | ++ifp->if_ierrors; |
748 | #ifdef DIAGNOSTIC |
749 | log(LOG_WARNING, "%s: warning - receiver " |
750 | "ring buffer overrun\n" , |
751 | device_xname(sc->sc_dev)); |
752 | #endif |
753 | /* Stop/reset/re-init NIC. */ |
754 | dp8390_reset(sc); |
755 | } else { |
756 | /* |
757 | * Receiver Error. One or more of: CRC error, |
758 | * frame alignment error FIFO overrun, or |
759 | * missed packet. |
760 | */ |
761 | if ((isr & ED_ISR_RXE) != 0) { |
762 | ++ifp->if_ierrors; |
763 | #ifdef DEBUG |
764 | if (dp8390_debug) { |
765 | printf("%s: receive error %x\n" , |
766 | device_xname(sc->sc_dev), |
767 | NIC_GET(regt, regh, |
768 | ED_P0_RSR)); |
769 | } |
770 | #endif |
771 | } |
772 | |
773 | /* |
774 | * Go get the packet(s) |
775 | * XXX - Doing this on an error is dubious |
776 | * because there shouldn't be any data to get |
777 | * (we've configured the interface to not |
778 | * accept packets with errors). |
779 | */ |
780 | (*sc->recv_int)(sc); |
781 | } |
782 | } |
783 | |
784 | /* |
785 | * If it looks like the transmitter can take more data, attempt |
786 | * to start output on the interface. This is done after |
787 | * handling the receiver to give the receiver priority. |
788 | */ |
789 | dp8390_start(ifp); |
790 | |
791 | /* |
792 | * Return NIC CR to standard state: page 0, remote DMA |
793 | * complete, start (toggling the TXP bit off, even if was just |
794 | * set in the transmit routine, is *okay* - it is 'edge' |
795 | * triggered from low to high). |
796 | */ |
797 | NIC_BARRIER(regt, regh); |
798 | NIC_PUT(regt, regh, ED_P0_CR, |
799 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); |
800 | NIC_BARRIER(regt, regh); |
801 | |
802 | /* |
803 | * If the Network Talley Counters overflow, read them to reset |
804 | * them. It appears that old 8390's won't clear the ISR flag |
805 | * otherwise - resulting in an infinite loop. |
806 | */ |
807 | if ((isr & ED_ISR_CNT) != 0) { |
808 | (void)NIC_GET(regt, regh, ED_P0_CNTR0); |
809 | (void)NIC_GET(regt, regh, ED_P0_CNTR1); |
810 | (void)NIC_GET(regt, regh, ED_P0_CNTR2); |
811 | } |
812 | |
813 | isr = NIC_GET(regt, regh, ED_P0_ISR); |
814 | if (isr == 0) |
815 | goto out; |
816 | } |
817 | |
818 | out: |
819 | rnd_add_uint32(&sc->rnd_source, rndisr); |
820 | return 1; |
821 | } |
822 | |
823 | /* |
824 | * Process an ioctl request. This code needs some work - it looks pretty ugly. |
825 | */ |
826 | int |
827 | dp8390_ioctl(struct ifnet *ifp, u_long cmd, void *data) |
828 | { |
829 | struct dp8390_softc *sc = ifp->if_softc; |
830 | struct ifaddr *ifa = data; |
831 | struct ifreq *ifr = data; |
832 | int s, error = 0; |
833 | |
834 | s = splnet(); |
835 | |
836 | switch (cmd) { |
837 | |
838 | case SIOCINITIFADDR: |
839 | if ((error = dp8390_enable(sc)) != 0) |
840 | break; |
841 | ifp->if_flags |= IFF_UP; |
842 | |
843 | dp8390_init(sc); |
844 | switch (ifa->ifa_addr->sa_family) { |
845 | #ifdef INET |
846 | case AF_INET: |
847 | arp_ifinit(ifp, ifa); |
848 | break; |
849 | #endif |
850 | default: |
851 | break; |
852 | } |
853 | break; |
854 | |
855 | case SIOCSIFFLAGS: |
856 | if ((error = ifioctl_common(ifp, cmd, data)) != 0) |
857 | break; |
858 | switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { |
859 | case IFF_RUNNING: |
860 | /* |
861 | * If interface is marked down and it is running, then |
862 | * stop it. |
863 | */ |
864 | dp8390_stop(sc); |
865 | ifp->if_flags &= ~IFF_RUNNING; |
866 | dp8390_disable(sc); |
867 | break; |
868 | case IFF_UP: |
869 | /* |
870 | * If interface is marked up and it is stopped, then |
871 | * start it. |
872 | */ |
873 | if ((error = dp8390_enable(sc)) != 0) |
874 | break; |
875 | dp8390_init(sc); |
876 | break; |
877 | case IFF_UP|IFF_RUNNING: |
878 | /* |
879 | * Reset the interface to pick up changes in any other |
880 | * flags that affect hardware registers. |
881 | */ |
882 | dp8390_stop(sc); |
883 | dp8390_init(sc); |
884 | break; |
885 | default: |
886 | break; |
887 | } |
888 | break; |
889 | |
890 | case SIOCADDMULTI: |
891 | case SIOCDELMULTI: |
892 | if (sc->sc_enabled == 0) { |
893 | error = EIO; |
894 | break; |
895 | } |
896 | |
897 | /* Update our multicast list. */ |
898 | if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { |
899 | /* |
900 | * Multicast list has changed; set the hardware filter |
901 | * accordingly. |
902 | */ |
903 | if (ifp->if_flags & IFF_RUNNING) { |
904 | dp8390_stop(sc); /* XXX for ds_setmcaf? */ |
905 | dp8390_init(sc); |
906 | } |
907 | error = 0; |
908 | } |
909 | break; |
910 | |
911 | case SIOCGIFMEDIA: |
912 | case SIOCSIFMEDIA: |
913 | error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); |
914 | break; |
915 | |
916 | default: |
917 | error = ether_ioctl(ifp, cmd, data); |
918 | break; |
919 | } |
920 | |
921 | splx(s); |
922 | return error; |
923 | } |
924 | |
925 | /* |
926 | * Retrieve packet from buffer memory and send to the next level up via |
927 | * ether_input(). If there is a BPF listener, give a copy to BPF, too. |
928 | */ |
929 | void |
930 | dp8390_read(struct dp8390_softc *sc, int buf, u_short len) |
931 | { |
932 | struct ifnet *ifp = &sc->sc_ec.ec_if; |
933 | struct mbuf *m; |
934 | |
935 | /* Pull packet off interface. */ |
936 | m = dp8390_get(sc, buf, len); |
937 | if (m == NULL) { |
938 | ifp->if_ierrors++; |
939 | return; |
940 | } |
941 | |
942 | ifp->if_ipackets++; |
943 | |
944 | /* |
945 | * Check if there's a BPF listener on this interface. |
946 | * If so, hand off the raw packet to bpf. |
947 | */ |
948 | bpf_mtap(ifp, m); |
949 | |
950 | if_percpuq_enqueue(ifp->if_percpuq, m); |
951 | } |
952 | |
953 | |
954 | /* |
955 | * Supporting routines. |
956 | */ |
957 | |
958 | /* |
959 | * Compute the multicast address filter from the list of multicast addresses we |
960 | * need to listen to. |
961 | */ |
962 | void |
963 | dp8390_getmcaf(struct ethercom *ec, uint8_t *af) |
964 | { |
965 | struct ifnet *ifp = &ec->ec_if; |
966 | struct ether_multi *enm; |
967 | uint32_t crc; |
968 | int i; |
969 | struct ether_multistep step; |
970 | |
971 | /* |
972 | * Set up multicast address filter by passing all multicast addresses |
973 | * through a crc generator, and then using the high order 6 bits as an |
974 | * index into the 64 bit logical address filter. The high order bit |
975 | * selects the word, while the rest of the bits select the bit within |
976 | * the word. |
977 | */ |
978 | |
979 | if (ifp->if_flags & IFF_PROMISC) { |
980 | ifp->if_flags |= IFF_ALLMULTI; |
981 | for (i = 0; i < 8; i++) |
982 | af[i] = 0xff; |
983 | return; |
984 | } |
985 | for (i = 0; i < 8; i++) |
986 | af[i] = 0; |
987 | ETHER_FIRST_MULTI(step, ec, enm); |
988 | while (enm != NULL) { |
989 | if (memcmp(enm->enm_addrlo, enm->enm_addrhi, |
990 | sizeof(enm->enm_addrlo)) != 0) { |
991 | /* |
992 | * We must listen to a range of multicast addresses. |
993 | * For now, just accept all multicasts, rather than |
994 | * trying to set only those filter bits needed to match |
995 | * the range. (At this time, the only use of address |
996 | * ranges is for IP multicast routing, for which the |
997 | * range is big enough to require all bits set.) |
998 | */ |
999 | ifp->if_flags |= IFF_ALLMULTI; |
1000 | for (i = 0; i < 8; i++) |
1001 | af[i] = 0xff; |
1002 | return; |
1003 | } |
1004 | |
1005 | crc = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN); |
1006 | |
1007 | /* Just want the 6 most significant bits. */ |
1008 | crc >>= 26; |
1009 | |
1010 | /* Turn on the corresponding bit in the filter. */ |
1011 | af[crc >> 3] |= 1 << (crc & 0x7); |
1012 | |
1013 | ETHER_NEXT_MULTI(step, enm); |
1014 | } |
1015 | ifp->if_flags &= ~IFF_ALLMULTI; |
1016 | } |
1017 | |
1018 | /* |
1019 | * Copy data from receive buffer to a new mbuf chain allocating mbufs |
1020 | * as needed. Return pointer to first mbuf in chain. |
1021 | * sc = dp8390 info (softc) |
1022 | * src = pointer in dp8390 ring buffer |
1023 | * total_len = amount of data to copy |
1024 | */ |
1025 | struct mbuf * |
1026 | dp8390_get(struct dp8390_softc *sc, int src, u_short total_len) |
1027 | { |
1028 | struct ifnet *ifp = &sc->sc_ec.ec_if; |
1029 | struct mbuf *m, *m0, *newm; |
1030 | u_short len; |
1031 | |
1032 | MGETHDR(m0, M_DONTWAIT, MT_DATA); |
1033 | if (m0 == NULL) |
1034 | return NULL; |
1035 | m_set_rcvif(m0, ifp); |
1036 | m0->m_pkthdr.len = total_len; |
1037 | len = MHLEN; |
1038 | m = m0; |
1039 | |
1040 | while (total_len > 0) { |
1041 | if (total_len >= MINCLSIZE) { |
1042 | MCLGET(m, M_DONTWAIT); |
1043 | if ((m->m_flags & M_EXT) == 0) |
1044 | goto bad; |
1045 | len = MCLBYTES; |
1046 | } |
1047 | |
1048 | /* |
1049 | * Make sure the data after the Ethernet header is aligned. |
1050 | */ |
1051 | if (m == m0) { |
1052 | char *newdata = (char *) |
1053 | ALIGN(m->m_data + sizeof(struct ether_header)) - |
1054 | sizeof(struct ether_header); |
1055 | len -= newdata - m->m_data; |
1056 | m->m_data = newdata; |
1057 | } |
1058 | |
1059 | m->m_len = len = min(total_len, len); |
1060 | src = (*sc->ring_copy)(sc, src, mtod(m, void *), len); |
1061 | |
1062 | total_len -= len; |
1063 | if (total_len > 0) { |
1064 | MGET(newm, M_DONTWAIT, MT_DATA); |
1065 | if (newm == NULL) |
1066 | goto bad; |
1067 | len = MLEN; |
1068 | m = m->m_next = newm; |
1069 | } |
1070 | } |
1071 | |
1072 | return m0; |
1073 | |
1074 | bad: |
1075 | m_freem(m0); |
1076 | return NULL; |
1077 | } |
1078 | |
1079 | |
1080 | /* |
1081 | * Default driver support functions. |
1082 | * |
1083 | * NOTE: all support functions assume 8-bit shared memory. |
1084 | */ |
1085 | /* |
1086 | * Zero NIC buffer memory and verify that it is clear. |
1087 | */ |
1088 | static int |
1089 | dp8390_test_mem(struct dp8390_softc *sc) |
1090 | { |
1091 | bus_space_tag_t buft = sc->sc_buft; |
1092 | bus_space_handle_t bufh = sc->sc_bufh; |
1093 | int i; |
1094 | |
1095 | bus_space_set_region_1(buft, bufh, sc->mem_start, 0, sc->mem_size); |
1096 | |
1097 | for (i = 0; i < sc->mem_size; ++i) { |
1098 | if (bus_space_read_1(buft, bufh, sc->mem_start + i)) { |
1099 | printf(": failed to clear NIC buffer at offset %x - " |
1100 | "check configuration\n" , (sc->mem_start + i)); |
1101 | return 1; |
1102 | } |
1103 | } |
1104 | |
1105 | return 0; |
1106 | } |
1107 | |
1108 | /* |
1109 | * Read a packet header from the ring, given the source offset. |
1110 | */ |
1111 | static void |
1112 | dp8390_read_hdr(struct dp8390_softc *sc, int src, struct dp8390_ring *hdrp) |
1113 | { |
1114 | bus_space_tag_t buft = sc->sc_buft; |
1115 | bus_space_handle_t bufh = sc->sc_bufh; |
1116 | |
1117 | /* |
1118 | * The byte count includes a 4 byte header that was added by |
1119 | * the NIC. |
1120 | */ |
1121 | hdrp->rsr = bus_space_read_1(buft, bufh, src); |
1122 | hdrp->next_packet = bus_space_read_1(buft, bufh, src + 1); |
1123 | hdrp->count = bus_space_read_1(buft, bufh, src + 2) | |
1124 | (bus_space_read_1(buft, bufh, src + 3) << 8); |
1125 | } |
1126 | |
1127 | /* |
1128 | * Copy `amount' bytes from a packet in the ring buffer to a linear |
1129 | * destination buffer, given a source offset and destination address. |
1130 | * Takes into account ring-wrap. |
1131 | */ |
1132 | static int |
1133 | dp8390_ring_copy(struct dp8390_softc *sc, int src, void *dst, u_short amount) |
1134 | { |
1135 | bus_space_tag_t buft = sc->sc_buft; |
1136 | bus_space_handle_t bufh = sc->sc_bufh; |
1137 | u_short tmp_amount; |
1138 | |
1139 | /* Does copy wrap to lower addr in ring buffer? */ |
1140 | if (src + amount > sc->mem_end) { |
1141 | tmp_amount = sc->mem_end - src; |
1142 | |
1143 | /* Copy amount up to end of NIC memory. */ |
1144 | bus_space_read_region_1(buft, bufh, src, dst, tmp_amount); |
1145 | |
1146 | amount -= tmp_amount; |
1147 | src = sc->mem_ring; |
1148 | dst = (char *)dst + tmp_amount; |
1149 | } |
1150 | bus_space_read_region_1(buft, bufh, src, dst, amount); |
1151 | |
1152 | return src + amount; |
1153 | } |
1154 | |
1155 | /* |
1156 | * Copy a packet from an mbuf to the transmit buffer on the card. |
1157 | * |
1158 | * Currently uses an extra buffer/extra memory copy, unless the whole |
1159 | * packet fits in one mbuf. |
1160 | */ |
1161 | static int |
1162 | dp8390_write_mbuf(struct dp8390_softc *sc, struct mbuf *m, int buf) |
1163 | { |
1164 | bus_space_tag_t buft = sc->sc_buft; |
1165 | bus_space_handle_t bufh = sc->sc_bufh; |
1166 | uint8_t *data; |
1167 | int len, totlen = 0; |
1168 | |
1169 | for (; m ; m = m->m_next) { |
1170 | data = mtod(m, uint8_t *); |
1171 | len = m->m_len; |
1172 | if (len > 0) { |
1173 | bus_space_write_region_1(buft, bufh, buf, data, len); |
1174 | totlen += len; |
1175 | buf += len; |
1176 | } |
1177 | } |
1178 | if (totlen < ETHER_MIN_LEN - ETHER_CRC_LEN) { |
1179 | bus_space_set_region_1(buft, bufh, buf, 0, |
1180 | ETHER_MIN_LEN - ETHER_CRC_LEN - totlen); |
1181 | totlen = ETHER_MIN_LEN - ETHER_CRC_LEN; |
1182 | } |
1183 | return totlen; |
1184 | } |
1185 | |
1186 | /* |
1187 | * Enable power on the interface. |
1188 | */ |
1189 | int |
1190 | dp8390_enable(struct dp8390_softc *sc) |
1191 | { |
1192 | |
1193 | if (sc->sc_enabled == 0 && sc->sc_enable != NULL) { |
1194 | if ((*sc->sc_enable)(sc) != 0) { |
1195 | aprint_error_dev(sc->sc_dev, |
1196 | "device enable failed\n" ); |
1197 | return EIO; |
1198 | } |
1199 | } |
1200 | |
1201 | sc->sc_enabled = 1; |
1202 | return 0; |
1203 | } |
1204 | |
1205 | /* |
1206 | * Disable power on the interface. |
1207 | */ |
1208 | void |
1209 | dp8390_disable(struct dp8390_softc *sc) |
1210 | { |
1211 | |
1212 | if (sc->sc_enabled != 0 && sc->sc_disable != NULL) { |
1213 | (*sc->sc_disable)(sc); |
1214 | sc->sc_enabled = 0; |
1215 | } |
1216 | } |
1217 | |
1218 | int |
1219 | dp8390_activate(device_t self, enum devact act) |
1220 | { |
1221 | struct dp8390_softc *sc = device_private(self); |
1222 | |
1223 | switch (act) { |
1224 | case DVACT_DEACTIVATE: |
1225 | if_deactivate(&sc->sc_ec.ec_if); |
1226 | return 0; |
1227 | default: |
1228 | return EOPNOTSUPP; |
1229 | } |
1230 | } |
1231 | |
1232 | int |
1233 | dp8390_detach(struct dp8390_softc *sc, int flags) |
1234 | { |
1235 | struct ifnet *ifp = &sc->sc_ec.ec_if; |
1236 | |
1237 | /* Succeed now if there's no work to do. */ |
1238 | if ((sc->sc_flags & DP8390_ATTACHED) == 0) |
1239 | return 0; |
1240 | |
1241 | /* dp8390_disable() checks sc->sc_enabled */ |
1242 | dp8390_disable(sc); |
1243 | |
1244 | if (sc->sc_media_fini != NULL) |
1245 | (*sc->sc_media_fini)(sc); |
1246 | |
1247 | /* Delete all remaining media. */ |
1248 | ifmedia_delete_instance(&sc->sc_media, IFM_INST_ANY); |
1249 | |
1250 | rnd_detach_source(&sc->rnd_source); |
1251 | ether_ifdetach(ifp); |
1252 | if_detach(ifp); |
1253 | |
1254 | return 0; |
1255 | } |
1256 | |
1257 | #ifdef IPKDB_DP8390 |
1258 | static void dp8390_ipkdb_hwinit(struct ipkdb_if *); |
1259 | static void dp8390_ipkdb_init(struct ipkdb_if *); |
1260 | static void dp8390_ipkdb_leave(struct ipkdb_if *); |
1261 | static int dp8390_ipkdb_rcv(struct ipkdb_if *, uint8_t *, int); |
1262 | static void dp8390_ipkdb_send(struct ipkdb_if *, uint8_t *, int); |
1263 | |
1264 | /* |
1265 | * This is essentially similar to dp8390_config above. |
1266 | */ |
1267 | int |
1268 | dp8390_ipkdb_attach(struct ipkdb_if *kip) |
1269 | { |
1270 | struct dp8390_softc *sc = kip->port; |
1271 | |
1272 | if (sc->mem_size < 8192 * 2) |
1273 | sc->txb_cnt = 1; |
1274 | else if (sc->mem_size < 8192 * 3) |
1275 | sc->txb_cnt = 2; |
1276 | else |
1277 | sc->txb_cnt = 3; |
1278 | |
1279 | sc->tx_page_start = sc->mem_start >> ED_PAGE_SHIFT; |
1280 | sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE; |
1281 | sc->rec_page_stop = sc->tx_page_start + (sc->mem_size >> ED_PAGE_SHIFT); |
1282 | sc->mem_ring = sc->mem_start + |
1283 | ((sc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); |
1284 | sc->mem_end = sc->mem_start + sc->mem_size; |
1285 | |
1286 | dp8390_stop(sc); |
1287 | |
1288 | kip->start = dp8390_ipkdb_init; |
1289 | kip->leave = dp8390_ipkdb_leave; |
1290 | kip->receive = dp8390_ipkdb_rcv; |
1291 | kip->send = dp8390_ipkdb_send; |
1292 | |
1293 | return 0; |
1294 | } |
1295 | |
1296 | /* |
1297 | * Similar to dp8390_init above. |
1298 | */ |
1299 | static void |
1300 | dp8390_ipkdb_hwinit(struct ipkdb_if *kip) |
1301 | { |
1302 | struct dp8390_softc *sc = kip->port; |
1303 | struct ifnet *ifp = &sc->sc_ec.ec_if; |
1304 | bus_space_tag_t regt = sc->sc_regt; |
1305 | bus_space_handle_t regh = sc->sc_regh; |
1306 | int i; |
1307 | |
1308 | sc->txb_inuse = 0; |
1309 | sc->txb_new = 0; |
1310 | sc->txb_next_tx = 0; |
1311 | dp8390_stop(sc); |
1312 | |
1313 | if (sc->dcr_reg & ED_DCR_LS) |
1314 | NIC_PUT(regt, regh, ED_P0_DCR, sc->dcr_reg); |
1315 | else |
1316 | NIC_PUT(regt, regh, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); |
1317 | NIC_PUT(regt, regh, ED_P0_RBCR0, 0); |
1318 | NIC_PUT(regt, regh, ED_P0_RBCR1, 0); |
1319 | NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_MON | sc->rcr_proto); |
1320 | NIC_PUT(regt, regh, ED_P0_TCR, ED_TCR_LB0); |
1321 | if (sc->is790) |
1322 | NIC_PUT(regt, regh, 0x09, 0); |
1323 | NIC_PUT(regt, regh, ED_P0_BNRY, sc->rec_page_start); |
1324 | NIC_PUT(regt, regh, ED_P0_PSTART, sc->rec_page_start); |
1325 | NIC_PUT(regt, regh, ED_P0_PSTOP, sc->rec_page_stop); |
1326 | NIC_PUT(regt, regh, ED_P0_IMR, 0); |
1327 | NIC_BARRIER(regt, regh); |
1328 | NIC_PUT(regt, regh, ED_P0_ISR, 0xff); |
1329 | |
1330 | NIC_BARRIER(regt, regh); |
1331 | NIC_PUT(regt, regh, ED_P0_CR, |
1332 | sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); |
1333 | NIC_BARRIER(regt, regh); |
1334 | |
1335 | for (i = 0; i < sizeof kip->myenetaddr; i++) |
1336 | NIC_PUT(regt, regh, ED_P1_PAR0 + i, kip->myenetaddr[i]); |
1337 | /* multicast filter? */ |
1338 | |
1339 | sc->next_packet = sc->rec_page_start + 1; |
1340 | NIC_PUT(regt, regh, ED_P1_CURR, sc->next_packet); |
1341 | |
1342 | NIC_BARRIER(regt, regh); |
1343 | NIC_PUT(regt, regh, ED_P1_CR, |
1344 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); |
1345 | NIC_BARRIER(regt, regh); |
1346 | |
1347 | /* promiscuous mode? */ |
1348 | NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_AB | ED_RCR_AM | sc->rcr_proto); |
1349 | NIC_PUT(regt, regh, ED_P0_TCR, 0); |
1350 | |
1351 | /* card-specific initialization? */ |
1352 | |
1353 | NIC_BARRIER(regt, regh); |
1354 | NIC_PUT(regt, regh, ED_P0_CR, |
1355 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); |
1356 | |
1357 | ifp->if_flags &= ~IFF_OACTIVE; |
1358 | } |
1359 | |
1360 | static void |
1361 | dp8390_ipkdb_init(struct ipkdb_if *kip) |
1362 | { |
1363 | struct dp8390_softc *sc = kip->port; |
1364 | bus_space_tag_t regt = sc->sc_regt; |
1365 | bus_space_handle_t regh = sc->sc_regh; |
1366 | uint8_t cmd; |
1367 | |
1368 | cmd = NIC_GET(regt, regh, ED_P0_CR) & ~(ED_CR_PAGE_3 | ED_CR_STA); |
1369 | |
1370 | /* Select page 0 */ |
1371 | NIC_BARRIER(regt, regh); |
1372 | NIC_PUT(regt, regh, ED_P0_CR, cmd | ED_CR_PAGE_0 | ED_CR_STP); |
1373 | NIC_BARRIER(regt, regh); |
1374 | |
1375 | /* If not started, init chip */ |
1376 | if ((cmd & ED_CR_STP) != 0) |
1377 | dp8390_ipkdb_hwinit(kip); |
1378 | |
1379 | /* If output active, wait for packets to drain */ |
1380 | while (sc->txb_inuse) { |
1381 | while ((cmd = (NIC_GET(regt, regh, ED_P0_ISR) & |
1382 | (ED_ISR_PTX | ED_ISR_TXE))) == 0) |
1383 | DELAY(1); |
1384 | NIC_PUT(regt, regh, ED_P0_ISR, cmd); |
1385 | if (--sc->txb_inuse) |
1386 | dp8390_xmit(sc); |
1387 | } |
1388 | } |
1389 | |
1390 | static void |
1391 | dp8390_ipkdb_leave(struct ipkdb_if *kip) |
1392 | { |
1393 | struct dp8390_softc *sc = kip->port; |
1394 | struct ifnet *ifp = &sc->sc_ec.ec_if; |
1395 | |
1396 | ifp->if_timer = 0; |
1397 | } |
1398 | |
1399 | /* |
1400 | * Similar to dp8390_intr above. |
1401 | */ |
1402 | static int |
1403 | dp8390_ipkdb_rcv(struct ipkdb_if *kip, uint8_t *buf, int poll) |
1404 | { |
1405 | struct dp8390_softc *sc = kip->port; |
1406 | bus_space_tag_t regt = sc->sc_regt; |
1407 | bus_space_handle_t regh = sc->sc_regh; |
1408 | uint8_t bnry, current, isr; |
1409 | int len, nlen, packet_ptr; |
1410 | struct dp8390_ring packet_hdr; |
1411 | |
1412 | /* Switch to page 0. */ |
1413 | NIC_BARRIER(regt, regh); |
1414 | NIC_PUT(regt, regh, ED_P0_CR, |
1415 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); |
1416 | NIC_BARRIER(regt, regh); |
1417 | |
1418 | for (;;) { |
1419 | isr = NIC_GET(regt, regh, ED_P0_ISR); |
1420 | NIC_PUT(regt, regh, ED_P0_ISR, isr); |
1421 | |
1422 | if (isr & (ED_ISR_PRX | ED_ISR_TXE)) { |
1423 | NIC_GET(regt, regh, ED_P0_NCR); |
1424 | NIC_GET(regt, regh, ED_P0_TSR); |
1425 | } |
1426 | |
1427 | if (isr & ED_ISR_OVW) { |
1428 | dp8390_ipkdb_hwinit(kip); |
1429 | continue; |
1430 | } |
1431 | |
1432 | if (isr & ED_ISR_CNT) { |
1433 | NIC_GET(regt, regh, ED_P0_CNTR0); |
1434 | NIC_GET(regt, regh, ED_P0_CNTR1); |
1435 | NIC_GET(regt, regh, ED_P0_CNTR2); |
1436 | } |
1437 | |
1438 | /* Similar to dp8390_rint above. */ |
1439 | NIC_BARRIER(regt, regh); |
1440 | NIC_PUT(regt, regh, ED_P0_CR, |
1441 | sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); |
1442 | NIC_BARRIER(regt, regh); |
1443 | |
1444 | current = NIC_GET(regt, regh, ED_P1_CURR); |
1445 | |
1446 | NIC_BARRIER(regt, regh); |
1447 | NIC_PUT(regt, regh, ED_P1_CR, |
1448 | sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); |
1449 | NIC_BARRIER(regt, regh); |
1450 | |
1451 | if (sc->next_packet == current) { |
1452 | if (poll) |
1453 | return 0; |
1454 | continue; |
1455 | } |
1456 | |
1457 | packet_ptr = sc->mem_ring + |
1458 | ((sc->next_packet - sc->rec_page_start) << ED_PAGE_SHIFT); |
1459 | sc->read_hdr(sc, packet_ptr, &packet_hdr); |
1460 | len = packet_hdr.count; |
1461 | nlen = packet_hdr.next_packet - sc->next_packet; |
1462 | if (nlen < 0) |
1463 | nlen += sc->rec_page_stop - sc->rec_page_start; |
1464 | nlen--; |
1465 | if ((len & ED_PAGE_MASK) + sizeof(packet_hdr) > ED_PAGE_SIZE) |
1466 | nlen--; |
1467 | len = (len & ED_PAGE_MASK) | (nlen << ED_PAGE_SHIFT); |
1468 | len -= sizeof(packet_hdr); |
1469 | |
1470 | if (len <= ETHERMTU && |
1471 | packet_hdr.next_packet >= sc->rec_page_start && |
1472 | packet_hdr.next_packet < sc->rec_page_stop) { |
1473 | sc->ring_copy(sc, packet_ptr + sizeof(packet_hdr), |
1474 | buf, len); |
1475 | sc->next_packet = packet_hdr.next_packet; |
1476 | bnry = sc->next_packet - 1; |
1477 | if (bnry < sc->rec_page_start) |
1478 | bnry = sc->rec_page_stop - 1; |
1479 | NIC_PUT(regt, regh, ED_P0_BNRY, bnry); |
1480 | return len; |
1481 | } |
1482 | |
1483 | dp8390_ipkdb_hwinit(kip); |
1484 | } |
1485 | } |
1486 | |
1487 | static void |
1488 | dp8390_ipkdb_send(struct ipkdb_if *kip, uint8_t *buf, int l) |
1489 | { |
1490 | struct dp8390_softc *sc = kip->port; |
1491 | bus_space_tag_t regt = sc->sc_regt; |
1492 | bus_space_handle_t regh = sc->sc_regh; |
1493 | struct mbuf mb; |
1494 | |
1495 | mbuf_hdr_init(&mb, MT_DATA, NULL, buf, l); |
1496 | mbuf_pkthdr_init(&mb); |
1497 | mb.m_pkthdr.len = l; |
1498 | mb.m_flags |= M_EXT; |
1499 | |
1500 | l = sc->write_mbuf(sc, &mb, |
1501 | sc->mem_start + ((sc->txb_new * ED_TXBUF_SIZE) << ED_PAGE_SHIFT)); |
1502 | sc->txb_len[sc->txb_new] = max(l, ETHER_MIN_LEN - ETHER_CRC_LEN); |
1503 | |
1504 | if (++sc->txb_new == sc->txb_cnt) |
1505 | sc->txb_new = 0; |
1506 | |
1507 | sc->txb_inuse++; |
1508 | dp8390_xmit(sc); |
1509 | |
1510 | while ((NIC_GET(regt, regh, ED_P0_ISR) & |
1511 | (ED_ISR_PTX | ED_ISR_TXE)) == 0) |
1512 | DELAY(1); |
1513 | |
1514 | sc->txb_inuse--; |
1515 | } |
1516 | #endif |
1517 | |