xref: /openbsd-src/sys/dev/pci/if_dc_pci.c (revision 8500990981f885cbe5e6a4958549cacc238b5ae6)
1 /*	$OpenBSD: if_dc_pci.c,v 1.42 2003/10/21 21:48:07 deraadt Exp $	*/
2 
3 /*
4  * Copyright (c) 1997, 1998, 1999
5  *	Bill Paul <wpaul@ee.columbia.edu>.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by Bill Paul.
18  * 4. Neither the name of the author nor the names of any co-contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32  * THE POSSIBILITY OF SUCH DAMAGE.
33  *
34  * $FreeBSD: src/sys/pci/if_dc.c,v 1.5 2000/01/12 22:24:05 wpaul Exp $
35  */
36 
37 #include "bpfilter.h"
38 
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/mbuf.h>
42 #include <sys/protosw.h>
43 #include <sys/socket.h>
44 #include <sys/ioctl.h>
45 #include <sys/errno.h>
46 #include <sys/malloc.h>
47 #include <sys/kernel.h>
48 #include <sys/device.h>
49 
50 #include <net/if.h>
51 #include <net/if_dl.h>
52 #include <net/if_types.h>
53 
54 #ifdef INET
55 #include <netinet/in.h>
56 #include <netinet/in_systm.h>
57 #include <netinet/in_var.h>
58 #include <netinet/ip.h>
59 #include <netinet/if_ether.h>
60 #endif
61 
62 #include <net/if_media.h>
63 
64 #if NBPFILTER > 0
65 #include <net/bpf.h>
66 #endif
67 
68 #include <dev/mii/mii.h>
69 #include <dev/mii/miivar.h>
70 
71 #include <dev/pci/pcireg.h>
72 #include <dev/pci/pcivar.h>
73 #include <dev/pci/pcidevs.h>
74 
75 #ifdef __sparc64__
76 #include <dev/ofw/openfirm.h>
77 #endif
78 
79 #define DC_USEIOSPACE
80 
81 #include <dev/ic/dcreg.h>
82 
83 /*
84  * Various supported device vendors/types and their names.
85  */
86 struct dc_type dc_devs[] = {
87 	{ PCI_VENDOR_DEC, PCI_PRODUCT_DEC_21140 },
88 	{ PCI_VENDOR_DEC, PCI_PRODUCT_DEC_21142 },
89 	{ PCI_VENDOR_DAVICOM, PCI_PRODUCT_DAVICOM_DM9009 },
90 	{ PCI_VENDOR_DAVICOM, PCI_PRODUCT_DAVICOM_DM9100 },
91 	{ PCI_VENDOR_DAVICOM, PCI_PRODUCT_DAVICOM_DM9102 },
92 	{ PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_AL981 },
93 	{ PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_AN983 },
94 	{ PCI_VENDOR_ASIX, PCI_PRODUCT_ASIX_AX88140A },
95 	{ PCI_VENDOR_MACRONIX, PCI_PRODUCT_MACRONIX_MX98713 },
96 	{ PCI_VENDOR_MACRONIX, PCI_PRODUCT_MACRONIX_MX98715 },
97 	{ PCI_VENDOR_MACRONIX, PCI_PRODUCT_MACRONIX_MX98727 },
98 	{ PCI_VENDOR_COMPEX, PCI_PRODUCT_COMPEX_98713 },
99 	{ PCI_VENDOR_LITEON, PCI_PRODUCT_LITEON_PNIC },
100 	{ PCI_VENDOR_LITEON, PCI_PRODUCT_LITEON_PNICII },
101 	{ PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_EN1217 },
102 	{ PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_EN2242 },
103 	{ PCI_VENDOR_CONEXANT, PCI_PRODUCT_CONEXANT_RS7112 },
104 	{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_21145 },
105 	{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CSHO100BTX },
106 	{ 0, 0 }
107 };
108 
109 int dc_pci_match(struct device *, void *, void *);
110 void dc_pci_attach(struct device *, struct device *, void *);
111 void dc_pci_acpi(struct device *, void *);
112 
113 /*
114  * Probe for a 21143 or clone chip. Check the PCI vendor and device
115  * IDs against our list and return a device name if we find a match.
116  */
117 int
118 dc_pci_match(parent, match, aux)
119 	struct device *parent;
120 	void *match, *aux;
121 {
122 	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
123 	struct dc_type *t;
124 
125 	/*
126 	 * Support for the 21140 chip is experimental.  If it works for you,
127 	 * that's great.  By default, this chip will use de.
128 	 */
129         if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_DEC &&
130 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DEC_21140)
131 		return (1);
132 
133 	/*
134 	 * The following chip revision doesn't seem to work so well with dc,
135 	 * so let's have de handle it.  (de will return a match of 2)
136 	 */
137         if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_DEC &&
138 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DEC_21142 &&
139 	    PCI_REVISION(pa->pa_class) == 0x21)
140 		return (1);
141 
142 	/*
143 	 * Since dc doesn't fit on the alpha floppy, we want de to win by
144 	 * default on alpha so that RAMDISK* and GENERIC will use the same
145 	 * driver.
146 	 */
147 	for (t = dc_devs; t->dc_vid != 0; t++) {
148 		if ((PCI_VENDOR(pa->pa_id) == t->dc_vid) &&
149 		    (PCI_PRODUCT(pa->pa_id) == t->dc_did)) {
150 #ifdef __alpha__
151 			return (1);
152 #else
153 			return (3);
154 #endif
155 		}
156 	}
157 
158 	return (0);
159 }
160 
161 void dc_pci_acpi(self, aux)
162 	struct device *self;
163 	void *aux;
164 {
165 	struct dc_softc		*sc = (struct dc_softc *)self;
166 	struct pci_attach_args	*pa = (struct pci_attach_args *)aux;
167 	pci_chipset_tag_t	pc = pa->pa_pc;
168 	u_int32_t		r, cptr;
169 
170 	/* Find the location of the capabilities block */
171 	cptr = pci_conf_read(pc, pa->pa_tag, DC_PCI_CCAP) & 0xFF;
172 
173 	r = pci_conf_read(pc, pa->pa_tag, cptr) & 0xFF;
174 	if (r == 0x01) {
175 
176 		r = pci_conf_read(pc, pa->pa_tag, cptr + PCI_PMCSR);
177 		if (r & DC_PSTATE_D3) {
178 			u_int32_t		iobase, membase, irq;
179 
180 			/* Save important PCI config data. */
181 			iobase = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFBIO);
182 			membase = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFBMA);
183 			irq = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFIT);
184 
185 			/* Reset the power state. */
186 			printf("%s: chip is in D%d power mode "
187 			    "-- setting to D0\n", sc->sc_dev.dv_xname,
188 			    r & DC_PSTATE_D3);
189 			r &= 0xFFFFFFFC;
190 			pci_conf_write(pc, pa->pa_tag, cptr + PCI_PMCSR, r);
191 
192 			/* Restore PCI config data. */
193 			pci_conf_write(pc, pa->pa_tag, DC_PCI_CFBIO, iobase);
194 			pci_conf_write(pc, pa->pa_tag, DC_PCI_CFBMA, membase);
195 			pci_conf_write(pc, pa->pa_tag, DC_PCI_CFIT, irq);
196 		}
197 	}
198 	return;
199 }
200 
201 /*
202  * Attach the interface. Allocate softc structures, do ifmedia
203  * setup and ethernet/BPF attach.
204  */
205 void dc_pci_attach(parent, self, aux)
206 	struct device *parent, *self;
207 	void *aux;
208 {
209 	int			s;
210 	const char		*intrstr = NULL;
211 	u_int32_t		command;
212 	struct dc_softc		*sc = (struct dc_softc *)self;
213 	struct pci_attach_args	*pa = aux;
214 	pci_chipset_tag_t	pc = pa->pa_pc;
215 	pci_intr_handle_t	ih;
216 	bus_addr_t		iobase;
217 	bus_size_t		iosize;
218 	u_int32_t		revision;
219 	int			found = 0;
220 
221 	s = splimp();
222 	sc->sc_dmat = pa->pa_dmat;
223 
224 	/*
225 	 * Handle power management nonsense.
226 	 */
227 	dc_pci_acpi(self, aux);
228 
229 	/*
230 	 * Map control/status registers.
231 	 */
232 	command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
233 	command |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE |
234 	    PCI_COMMAND_MASTER_ENABLE;
235 	pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command);
236 	command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
237 
238 	sc->dc_csid = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
239 
240 #ifdef DC_USEIOSPACE
241 	if (!(command & PCI_COMMAND_IO_ENABLE)) {
242 		printf(": failed to enable I/O ports\n");
243 		goto fail;
244 	}
245 	if (pci_io_find(pc, pa->pa_tag, DC_PCI_CFBIO, &iobase, &iosize)) {
246 		printf(": can't find I/O space\n");
247 		goto fail;
248 	}
249 	if (bus_space_map(pa->pa_iot, iobase, iosize, 0, &sc->dc_bhandle)) {
250 		printf(": can't map I/O space\n");
251 		goto fail;
252 	}
253 	sc->dc_btag = pa->pa_iot;
254 #else
255 	if (!(command & PCI_COMMAND_MEM_ENABLE)) {
256 		printf(": failed to enable memory mapping\n");
257 		goto fail;
258 	}
259 	if (pci_mem_find(pc, pa->pa_tag, DC_PCI_CFBMA, &iobase, &iosize, NULL)){
260 		printf(": can't find mem space\n");
261 		goto fail;
262 	}
263 	if (bus_space_map(pa->pa_memt, iobase, iosize, 0, &sc->dc_bhandle)) {
264 		printf(": can't map mem space\n");
265 		goto fail;
266 	}
267 	sc->dc_btag = pa->pa_memt;
268 #endif
269 
270 	/* Allocate interrupt */
271 	if (pci_intr_map(pa, &ih)) {
272 		printf(": couldn't map interrupt\n");
273 		goto fail;
274 	}
275 	intrstr = pci_intr_string(pc, ih);
276 	sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, dc_intr, sc,
277 	    self->dv_xname);
278 	if (sc->sc_ih == NULL) {
279 		printf(": couldn't establish interrupt");
280 		if (intrstr != NULL)
281 			printf(" at %s", intrstr);
282 		printf("\n");
283 		goto fail;
284 	}
285 	printf(": %s,", intrstr);
286 
287 	/* Need this info to decide on a chip type. */
288 	sc->dc_revision = revision = PCI_REVISION(pa->pa_class);
289 
290 	switch (PCI_VENDOR(pa->pa_id)) {
291 	case PCI_VENDOR_DEC:
292 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DEC_21140 ||
293 		    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DEC_21142) {
294 			found = 1;
295 			sc->dc_type = DC_TYPE_21143;
296 			sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
297 			sc->dc_flags |= DC_REDUCED_MII_POLL;
298 			dc_eeprom_width(sc);
299 			dc_read_srom(sc, sc->dc_romwidth);
300 		}
301 		break;
302 	case PCI_VENDOR_INTEL:
303 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_21145) {
304 			found = 1;
305 			sc->dc_type = DC_TYPE_21145;
306 			sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
307 			sc->dc_flags |= DC_REDUCED_MII_POLL;
308 			dc_eeprom_width(sc);
309 			dc_read_srom(sc, sc->dc_romwidth);
310 		}
311 	case PCI_VENDOR_DAVICOM:
312 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DAVICOM_DM9100 ||
313 		    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DAVICOM_DM9102 ||
314 		    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DAVICOM_DM9009) {
315 			found = 1;
316 			sc->dc_type = DC_TYPE_DM9102;
317 			sc->dc_flags |= DC_TX_COALESCE|DC_TX_INTR_ALWAYS;
318 			sc->dc_flags |= DC_REDUCED_MII_POLL|DC_TX_STORENFWD;
319 			sc->dc_pmode = DC_PMODE_MII;
320 
321 			/* Increase the latency timer value. */
322 			command = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFLT);
323 			command &= 0xFFFF00FF;
324 			command |= 0x00008000;
325 			pci_conf_write(pc, pa->pa_tag, DC_PCI_CFLT, command);
326 		}
327 		break;
328 	case PCI_VENDOR_3COM:
329 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_3COM_3CSHO100BTX) {
330 			found = 1;
331 			sc->dc_type = DC_TYPE_AN983;
332 			sc->dc_flags |= DC_TX_USE_TX_INTR;
333 			sc->dc_flags |= DC_TX_ADMTEK_WAR;
334 			sc->dc_pmode = DC_PMODE_MII;
335 		}
336 		dc_eeprom_width(sc);
337 		dc_read_srom(sc, sc->dc_romwidth);
338 		break;
339 	case PCI_VENDOR_ADMTEK:
340 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADMTEK_AL981) {
341 			found = 1;
342 			sc->dc_type = DC_TYPE_AL981;
343 			sc->dc_flags |= DC_TX_USE_TX_INTR;
344 			sc->dc_flags |= DC_TX_ADMTEK_WAR;
345 			sc->dc_pmode = DC_PMODE_MII;
346 		}
347 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADMTEK_AN983) {
348 			found = 1;
349 			sc->dc_type = DC_TYPE_AN983;
350 			sc->dc_flags |= DC_TX_USE_TX_INTR;
351 			sc->dc_flags |= DC_TX_ADMTEK_WAR;
352 			sc->dc_flags |= DC_64BIT_HASH;
353 			sc->dc_pmode = DC_PMODE_MII;
354 		}
355 		dc_eeprom_width(sc);
356 		dc_read_srom(sc, sc->dc_romwidth);
357 		break;
358 	case PCI_VENDOR_MACRONIX:
359 	case PCI_VENDOR_ACCTON:
360 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ACCTON_EN2242) {
361 			found = 1;
362 			sc->dc_type = DC_TYPE_AN983;
363 			sc->dc_flags |= DC_TX_USE_TX_INTR;
364 			sc->dc_flags |= DC_TX_ADMTEK_WAR;
365 			sc->dc_pmode = DC_PMODE_MII;
366 
367 			dc_eeprom_width(sc);
368 			dc_read_srom(sc, sc->dc_romwidth);
369 		}
370 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_MACRONIX_MX98713) {
371 			found = 1;
372 			if (revision < DC_REVISION_98713A) {
373 				sc->dc_type = DC_TYPE_98713;
374 			}
375 			if (revision >= DC_REVISION_98713A) {
376 				sc->dc_type = DC_TYPE_98713A;
377 				sc->dc_flags |= DC_21143_NWAY;
378 			}
379 			sc->dc_flags |= DC_REDUCED_MII_POLL;
380 			sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
381 		}
382 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_MACRONIX_MX98715 ||
383 		    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ACCTON_EN1217) {
384 			found = 1;
385 			if (revision >= DC_REVISION_98715AEC_C &&
386 			    revision < DC_REVISION_98725)
387 				sc->dc_flags |= DC_128BIT_HASH;
388 			sc->dc_type = DC_TYPE_987x5;
389 			sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
390 			sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY;
391 		}
392 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_MACRONIX_MX98727) {
393 			found = 1;
394 			sc->dc_type = DC_TYPE_987x5;
395 			sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
396 			sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY;
397 		}
398 		break;
399 	case PCI_VENDOR_COMPEX:
400 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_COMPEX_98713) {
401 			found = 1;
402 			if (revision < DC_REVISION_98713A) {
403 				sc->dc_type = DC_TYPE_98713;
404 				sc->dc_flags |= DC_REDUCED_MII_POLL;
405 			}
406 			if (revision >= DC_REVISION_98713A)
407 				sc->dc_type = DC_TYPE_98713A;
408 			sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
409 		}
410 		break;
411 	case PCI_VENDOR_LITEON:
412 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_LITEON_PNICII) {
413 			found = 1;
414 			sc->dc_type = DC_TYPE_PNICII;
415 			sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR;
416 			sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY;
417 			sc->dc_flags |= DC_128BIT_HASH;
418 		}
419 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_LITEON_PNIC) {
420 			found = 1;
421 			sc->dc_type = DC_TYPE_PNIC;
422 			sc->dc_flags |= DC_TX_STORENFWD|DC_TX_INTR_ALWAYS;
423 			sc->dc_flags |= DC_PNIC_RX_BUG_WAR;
424 			sc->dc_pnic_rx_buf = malloc(DC_RXLEN * 5, M_DEVBUF,
425 			    M_NOWAIT);
426 			if (sc->dc_pnic_rx_buf == NULL)
427 				panic("dc_pci_attach");
428 			if (revision < DC_REVISION_82C169)
429 				sc->dc_pmode = DC_PMODE_SYM;
430 		}
431 		break;
432 	case PCI_VENDOR_ASIX:
433 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ASIX_AX88140A) {
434 			found = 1;
435 			sc->dc_type = DC_TYPE_ASIX;
436 			sc->dc_flags |= DC_TX_USE_TX_INTR|DC_TX_INTR_FIRSTFRAG;
437 			sc->dc_flags |= DC_REDUCED_MII_POLL;
438 			sc->dc_pmode = DC_PMODE_MII;
439 		}
440 		break;
441 	case PCI_VENDOR_CONEXANT:
442 		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONEXANT_RS7112) {
443 			found = 1;
444 			sc->dc_type = DC_TYPE_CONEXANT;
445 			sc->dc_flags |= DC_TX_INTR_ALWAYS;
446 			sc->dc_flags |= DC_REDUCED_MII_POLL;
447 			sc->dc_pmode = DC_PMODE_MII;
448 			dc_eeprom_width(sc);
449 			dc_read_srom(sc, sc->dc_romwidth);
450 		}
451 		break;
452 	}
453 	if (found == 0) {
454 		/* This shouldn't happen if probe has done it's job... */
455 		printf(": unknown device: %x:%x\n",
456 		    PCI_VENDOR(pa->pa_id), PCI_PRODUCT(pa->pa_id));
457 		goto fail;
458 	}
459 
460 	/* Save the cache line size. */
461 	if (DC_IS_DAVICOM(sc))
462 		sc->dc_cachesize = 0;
463 	else {
464 		sc->dc_cachesize = pci_conf_read(pc, pa->pa_tag,
465 		    DC_PCI_CFLT) & 0xFF;
466 #ifdef __hppa__
467 		sc->dc_cachesize = 16;
468 #endif
469 	}
470 
471 	/* Reset the adapter. */
472 	dc_reset(sc);
473 
474 	/* Take 21143 out of snooze mode */
475 	if (DC_IS_INTEL(sc)) {
476 		command = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFDD);
477 		command &= ~(DC_CFDD_SNOOZE_MODE|DC_CFDD_SLEEP_MODE);
478 		pci_conf_write(pc, pa->pa_tag, DC_PCI_CFDD, command);
479 	}
480 
481 	/*
482 	 * If we discover later (in dc_attach) that we have an
483 	 * MII with no PHY, we need to have the 21143 drive the LEDs.
484 	 * Except there are some systems like the NEC VersaPro NoteBook PC
485 	 * which have no LEDs, and twiddling these bits has adverse effects
486 	 * on them. (I.e. you suddenly can't get a link.)
487 	 *
488 	 * If mii_attach() returns an error, we leave the DC_TULIP_LEDS
489 	 * bit set, else we clear it. Since our dc(4) driver is split into
490 	 * bus-dependent and bus-independent parts, we must do set this bit
491 	 * here while we are able to do PCI configuration reads.
492 	 */
493 	if (DC_IS_INTEL(sc)) {
494 		if (pci_conf_read(pc, pa->pa_tag, DC_PCI_CSID) != 0x80281033)
495 			sc->dc_flags |= DC_TULIP_LEDS;
496 	}
497 
498 	/*
499 	 * Try to learn something about the supported media.
500 	 * We know that ASIX and ADMtek and Davicom devices
501 	 * will *always* be using MII media, so that's a no-brainer.
502 	 * The tricky ones are the Macronix/PNIC II and the
503 	 * Intel 21143.
504 	 */
505 	if (DC_IS_INTEL(sc))
506 		dc_parse_21143_srom(sc);
507 	else if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) {
508 		if (sc->dc_type == DC_TYPE_98713)
509 			sc->dc_pmode = DC_PMODE_MII;
510 		else
511 			sc->dc_pmode = DC_PMODE_SYM;
512 	} else if (!sc->dc_pmode)
513 		sc->dc_pmode = DC_PMODE_MII;
514 
515 #ifdef __sparc64__
516 	{
517 		extern void myetheraddr(u_char *);
518 
519 		if (OF_getprop(PCITAG_NODE(pa->pa_tag), "local-mac-address",
520 		    sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN) <= 0)
521 			myetheraddr(sc->sc_arpcom.ac_enaddr);
522 		if (sc->sc_arpcom.ac_enaddr[0] == 0x00 &&
523 		    sc->sc_arpcom.ac_enaddr[1] == 0x03 &&
524 		    sc->sc_arpcom.ac_enaddr[2] == 0xcc)
525 			sc->dc_flags |= DC_MOMENCO_BOTCH;
526 		sc->sc_hasmac = 1;
527 	}
528 #endif
529 
530 #ifdef SRM_MEDIA
531 	sc->dc_srm_media = 0;
532 
533 	/* Remember the SRM console media setting */
534 	if (DC_IS_INTEL(sc)) {
535 		command = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFDD);
536 		command &= ~(DC_CFDD_SNOOZE_MODE|DC_CFDD_SLEEP_MODE);
537 		switch ((command >> 8) & 0xff) {
538 		case 3:
539 			sc->dc_srm_media = IFM_10_T;
540 			break;
541 		case 4:
542 			sc->dc_srm_media = IFM_10_T | IFM_FDX;
543 			break;
544 		case 5:
545 			sc->dc_srm_media = IFM_100_TX;
546 			break;
547 		case 6:
548 			sc->dc_srm_media = IFM_100_TX | IFM_FDX;
549 			break;
550 		}
551 		if (sc->dc_srm_media)
552 			sc->dc_srm_media |= IFM_ACTIVE | IFM_ETHER;
553 	}
554 #endif
555 	dc_eeprom_width(sc);
556 	dc_attach(sc);
557 
558 fail:
559 	splx(s);
560 }
561 
562 struct cfattach dc_pci_ca = {
563 	sizeof(struct dc_softc), dc_pci_match, dc_pci_attach
564 };
565