xref: /netbsd/sys/dev/cardbus/if_tlp_cardbus.c (revision c4a72b64) 
1 /*	$NetBSD: if_tlp_cardbus.c,v 1.38 2002/11/11 12:51:38 onoe Exp $	*/
2 
3 /*-
4  * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9  * NASA Ames Research Center.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. All advertising materials mentioning features or use of this software
20  *    must display the following acknowledgement:
21  *	This product includes software developed by the NetBSD
22  *	Foundation, Inc. and its contributors.
23  * 4. Neither the name of The NetBSD Foundation nor the names of its
24  *    contributors may be used to endorse or promote products derived
25  *    from this software without specific prior written permission.
26  *
27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37  * POSSIBILITY OF SUCH DAMAGE.
38  */
39 
40 /*
41  * CardBus bus front-end for the Digital Semiconductor ``Tulip'' (21x4x)
42  * Ethernet controller family driver.
43  */
44 
45 #include <sys/cdefs.h>
46 __KERNEL_RCSID(0, "$NetBSD: if_tlp_cardbus.c,v 1.38 2002/11/11 12:51:38 onoe Exp $");
47 
48 #include "opt_inet.h"
49 #include "opt_ns.h"
50 #include "bpfilter.h"
51 
52 #include <sys/param.h>
53 #include <sys/systm.h>
54 #include <sys/mbuf.h>
55 #include <sys/malloc.h>
56 #include <sys/kernel.h>
57 #include <sys/socket.h>
58 #include <sys/ioctl.h>
59 #include <sys/errno.h>
60 #include <sys/device.h>
61 
62 #include <machine/endian.h>
63 
64 #include <net/if.h>
65 #include <net/if_dl.h>
66 #include <net/if_media.h>
67 #include <net/if_ether.h>
68 
69 #if NBPFILTER > 0
70 #include <net/bpf.h>
71 #endif
72 
73 #ifdef INET
74 #include <netinet/in.h>
75 #include <netinet/if_inarp.h>
76 #endif
77 
78 #ifdef NS
79 #include <netns/ns.h>
80 #include <netns/ns_if.h>
81 #endif
82 
83 #include <machine/bus.h>
84 #include <machine/intr.h>
85 
86 #include <dev/mii/miivar.h>
87 #include <dev/mii/mii_bitbang.h>
88 
89 #include <dev/ic/tulipreg.h>
90 #include <dev/ic/tulipvar.h>
91 
92 #include <dev/pci/pcivar.h>
93 #include <dev/pci/pcireg.h>
94 #include <dev/pci/pcidevs.h>
95 
96 #include <dev/cardbus/cardbusvar.h>
97 #include <dev/cardbus/cardbusdevs.h>
98 
99 /*
100  * PCI configuration space registers used by the Tulip.
101  */
102 #define	TULIP_PCI_IOBA		0x10	/* i/o mapped base */
103 #define	TULIP_PCI_MMBA		0x14	/* memory mapped base */
104 #define	TULIP_PCI_CFDA		0x40	/* configuration driver area */
105 
106 #define	CFDA_SLEEP		0x80000000	/* sleep mode */
107 #define	CFDA_SNOOZE		0x40000000	/* snooze mode */
108 
109 struct tulip_cardbus_softc {
110 	struct tulip_softc sc_tulip;	/* real Tulip softc */
111 
112 	/* CardBus-specific goo. */
113 	void	*sc_ih;			/* interrupt handle */
114 	cardbus_devfunc_t sc_ct;	/* our CardBus devfuncs */
115 	cardbustag_t sc_tag;		/* our CardBus tag */
116 	int	sc_csr;			/* CSR bits */
117 	bus_size_t sc_mapsize;		/* the size of mapped bus space
118 					   region */
119 
120 	int	sc_cben;		/* CardBus enables */
121 	int	sc_bar_reg;		/* which BAR to use */
122 	pcireg_t sc_bar_val;		/* value of the BAR */
123 
124 	int	sc_intrline;		/* interrupt line */
125 };
126 
127 int	tlp_cardbus_match __P((struct device *, struct cfdata *, void *));
128 void	tlp_cardbus_attach __P((struct device *, struct device *, void *));
129 int	tlp_cardbus_detach __P((struct device *, int));
130 
131 CFATTACH_DECL(tlp_cardbus, sizeof(struct tulip_cardbus_softc),
132     tlp_cardbus_match, tlp_cardbus_attach, tlp_cardbus_detach, tlp_activate);
133 
134 const struct tulip_cardbus_product {
135 	u_int32_t	tcp_vendor;	/* PCI vendor ID */
136 	u_int32_t	tcp_product;	/* PCI product ID */
137 	tulip_chip_t	tcp_chip;	/* base Tulip chip type */
138 } tlp_cardbus_products[] = {
139 	{ PCI_VENDOR_DEC,		PCI_PRODUCT_DEC_21142,
140 	  TULIP_CHIP_21142 },
141 
142 	{ PCI_VENDOR_XIRCOM,		PCI_PRODUCT_XIRCOM_X3201_3_21143,
143 	  TULIP_CHIP_X3201_3 },
144 
145 	{ PCI_VENDOR_ADMTEK,		PCI_PRODUCT_ADMTEK_AN985,
146 	  TULIP_CHIP_AN985 },
147 
148 	{ CARDBUS_VENDOR_ACCTON,	CARDBUS_PRODUCT_ACCTON_EN2242,
149 	  TULIP_CHIP_AN985 },
150 
151 	{ CARDBUS_VENDOR_ABOCOM,	CARDBUS_PRODUCT_ABOCOM_FE2500,
152 	  TULIP_CHIP_AN985 },
153 
154 	{ CARDBUS_VENDOR_ABOCOM,	CARDBUS_PRODUCT_ABOCOM_PCM200,
155 	  TULIP_CHIP_AN985 },
156 
157 	{ CARDBUS_VENDOR_ABOCOM,	CARDBUS_PRODUCT_ABOCOM_FE2500MX,
158 	  TULIP_CHIP_AN985 },
159 
160 	{ CARDBUS_VENDOR_HAWKING,	CARDBUS_PRODUCT_HAWKING_PN672TX,
161 	  TULIP_CHIP_AN985 },
162 
163 	{ 0,				0,
164 	  TULIP_CHIP_INVALID },
165 };
166 
167 struct tlp_cardbus_quirks {
168 	void		(*tpq_func) __P((struct tulip_cardbus_softc *,
169 			    const u_int8_t *));
170 	u_int8_t	tpq_oui[3];
171 };
172 
173 void	tlp_cardbus_lxt_quirks __P((struct tulip_cardbus_softc *,
174 	    const u_int8_t *));
175 
176 const struct tlp_cardbus_quirks tlp_cardbus_21142_quirks[] = {
177 	{ tlp_cardbus_lxt_quirks,	{ 0x00, 0x40, 0x05 } },
178 	{ NULL,				{ 0, 0, 0 } }
179 };
180 
181 void	tlp_cardbus_setup __P((struct tulip_cardbus_softc *));
182 
183 int	tlp_cardbus_enable __P((struct tulip_softc *));
184 void	tlp_cardbus_disable __P((struct tulip_softc *));
185 void	tlp_cardbus_power __P((struct tulip_softc *, int));
186 
187 void	tlp_cardbus_x3201_reset __P((struct tulip_softc *));
188 
189 const struct tulip_cardbus_product *tlp_cardbus_lookup
190     __P((const struct cardbus_attach_args *));
191 void tlp_cardbus_get_quirks __P((struct tulip_cardbus_softc *,
192     const u_int8_t *, const struct tlp_cardbus_quirks *));
193 
194 const struct tulip_cardbus_product *
195 tlp_cardbus_lookup(ca)
196 	const struct cardbus_attach_args *ca;
197 {
198 	const struct tulip_cardbus_product *tcp;
199 
200 	for (tcp = tlp_cardbus_products;
201 	     tlp_chip_names[tcp->tcp_chip] != NULL;
202 	     tcp++) {
203 		if (PCI_VENDOR(ca->ca_id) == tcp->tcp_vendor &&
204 		    PCI_PRODUCT(ca->ca_id) == tcp->tcp_product)
205 			return (tcp);
206 	}
207 	return (NULL);
208 }
209 
210 void
211 tlp_cardbus_get_quirks(csc, enaddr, tpq)
212 	struct tulip_cardbus_softc *csc;
213 	const u_int8_t *enaddr;
214 	const struct tlp_cardbus_quirks *tpq;
215 {
216 
217 	for (; tpq->tpq_func != NULL; tpq++) {
218 		if (tpq->tpq_oui[0] == enaddr[0] &&
219 		    tpq->tpq_oui[1] == enaddr[1] &&
220 		    tpq->tpq_oui[2] == enaddr[2]) {
221 			(*tpq->tpq_func)(csc, enaddr);
222 			return;
223 		}
224 	}
225 }
226 
227 int
228 tlp_cardbus_match(parent, match, aux)
229 	struct device *parent;
230 	struct cfdata *match;
231 	void *aux;
232 {
233 	struct cardbus_attach_args *ca = aux;
234 
235 	if (tlp_cardbus_lookup(ca) != NULL)
236 		return (1);
237 
238 	return (0);
239 }
240 
241 void
242 tlp_cardbus_attach(parent, self, aux)
243 	struct device *parent, *self;
244 	void *aux;
245 {
246 	struct tulip_cardbus_softc *csc = (void *)self;
247 	struct tulip_softc *sc = &csc->sc_tulip;
248 	struct cardbus_attach_args *ca = aux;
249 	cardbus_devfunc_t ct = ca->ca_ct;
250 	const struct tulip_cardbus_product *tcp;
251 	u_int8_t enaddr[ETHER_ADDR_LEN];
252 	bus_addr_t adr;
253 	pcireg_t reg;
254 
255 	sc->sc_devno = ca->ca_device;
256 	sc->sc_dmat = ca->ca_dmat;
257 	csc->sc_ct = ct;
258 	csc->sc_tag = ca->ca_tag;
259 
260 	tcp = tlp_cardbus_lookup(ca);
261 	if (tcp == NULL) {
262 		printf("\n");
263 		panic("tlp_cardbus_attach: impossible");
264 	}
265 	sc->sc_chip = tcp->tcp_chip;
266 
267 	/*
268 	 * By default, Tulip registers are 8 bytes long (4 bytes
269 	 * followed by a 4 byte pad).
270 	 */
271 	sc->sc_regshift = 3;
272 
273 	/*
274 	 * Power management hooks.
275 	 */
276 	sc->sc_enable = tlp_cardbus_enable;
277 	sc->sc_disable = tlp_cardbus_disable;
278 	sc->sc_power = tlp_cardbus_power;
279 
280 	/*
281 	 * Get revision info, and set some chip-specific variables.
282 	 */
283 	sc->sc_rev = PCI_REVISION(ca->ca_class);
284 	switch (sc->sc_chip) {
285 	case TULIP_CHIP_21142:
286 		if (sc->sc_rev >= 0x20)
287 			sc->sc_chip = TULIP_CHIP_21143;
288 		break;
289 
290 	case TULIP_CHIP_AN985:
291 		/*
292 		 * The AN983 and AN985 are very similar, and are
293 		 * differentiated by a "signature" register that
294 		 * is like, but not identical, to a PCI ID register.
295 		 */
296 		reg = cardbus_conf_read(ct->ct_cc, ct->ct_cf, csc->sc_tag,
297 		    0x80);
298 		switch (reg) {
299 		case 0x09811317:
300 			sc->sc_chip = TULIP_CHIP_AN985;
301 			break;
302 
303 		case 0x09851317:
304 			sc->sc_chip = TULIP_CHIP_AN983;
305 			break;
306 
307 		}
308 		break;
309 
310 	default:
311 		/* Nothing. -- to make gcc happy */
312 		break;
313 	}
314 
315 	printf(": %s Ethernet, pass %d.%d\n",
316 	    tlp_chip_names[sc->sc_chip],
317 	    (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf);
318 
319 	/*
320 	 * Map the device.
321 	 */
322 	csc->sc_csr = CARDBUS_COMMAND_MASTER_ENABLE;
323 	if (Cardbus_mapreg_map(ct, TULIP_PCI_MMBA,
324 	    CARDBUS_MAPREG_TYPE_MEM, 0, &sc->sc_st, &sc->sc_sh, &adr,
325 	    &csc->sc_mapsize) == 0) {
326 #if rbus
327 #else
328 		(*ct->ct_cf->cardbus_mem_open)(cc, 0, adr, adr+csc->sc_mapsize);
329 #endif
330 		csc->sc_cben = CARDBUS_MEM_ENABLE;
331 		csc->sc_csr |= CARDBUS_COMMAND_MEM_ENABLE;
332 		csc->sc_bar_reg = TULIP_PCI_MMBA;
333 		csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_MEM;
334 	} else if (Cardbus_mapreg_map(ct, TULIP_PCI_IOBA,
335 	    CARDBUS_MAPREG_TYPE_IO, 0, &sc->sc_st, &sc->sc_sh, &adr,
336 	    &csc->sc_mapsize) == 0) {
337 #if rbus
338 #else
339 		(*ct->ct_cf->cardbus_io_open)(cc, 0, adr, adr+csc->sc_mapsize);
340 #endif
341 		csc->sc_cben = CARDBUS_IO_ENABLE;
342 		csc->sc_csr |= CARDBUS_COMMAND_IO_ENABLE;
343 		csc->sc_bar_reg = TULIP_PCI_IOBA;
344 		csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_IO;
345 	} else {
346 		printf("%s: unable to map device registers\n",
347 		    sc->sc_dev.dv_xname);
348 		return;
349 	}
350 
351 	/*
352 	 * Bring the chip out of powersave mode and initialize the
353 	 * configuration registers.
354 	 */
355 	tlp_cardbus_setup(csc);
356 
357 	/*
358 	 * Read the contents of the Ethernet Address ROM/SROM.
359 	 */
360 	switch (sc->sc_chip) {
361 	case TULIP_CHIP_X3201_3:
362 		/*
363 		 * No SROM on this chip.
364 		 */
365 		break;
366 
367 	default:
368 		if (tlp_read_srom(sc) == 0)
369 			goto cant_cope;
370 		break;
371 	}
372 
373 	/*
374 	 * Deal with chip/board quirks.  This includes setting up
375 	 * the mediasw, and extracting the Ethernet address from
376 	 * the rombuf.
377 	 */
378 	switch (sc->sc_chip) {
379 	case TULIP_CHIP_21142:
380 	case TULIP_CHIP_21143:
381 		/* Check for new format SROM. */
382 		if (tlp_isv_srom_enaddr(sc, enaddr) != 0) {
383 			/*
384 			 * We start out with the 2114x ISV media switch.
385 			 * When we search for quirks, we may change to
386 			 * a different switch.
387 			 */
388 			sc->sc_mediasw = &tlp_2114x_isv_mediasw;
389 		} else if (tlp_parse_old_srom(sc, enaddr) == 0) {
390 			/*
391 			 * Not an ISV SROM, and not in old DEC Address
392 			 * ROM format.  Try to snarf it out of the CIS.
393 			 */
394 			if (ca->ca_cis.funce.network.netid_present == 0)
395 				goto cant_cope;
396 
397 			/* Grab the MAC address from the CIS. */
398 			memcpy(enaddr, ca->ca_cis.funce.network.netid,
399 			    sizeof(enaddr));
400 		}
401 
402 		/*
403 		 * Deal with any quirks this board might have.
404 		 */
405 		tlp_cardbus_get_quirks(csc, enaddr, tlp_cardbus_21142_quirks);
406 
407 		/*
408 		 * If we don't already have a media switch, default to
409 		 * MII-over-SIO, with no special reset routine.
410 		 */
411 		if (sc->sc_mediasw == NULL) {
412 			printf("%s: defaulting to MII-over-SIO; no bets...\n",
413 			    sc->sc_dev.dv_xname);
414 			sc->sc_mediasw = &tlp_sio_mii_mediasw;
415 		}
416 		break;
417 
418 	case TULIP_CHIP_AN983:
419 	case TULIP_CHIP_AN985:
420 		/*
421 		 * The ADMtek AN985's Ethernet address is located
422 		 * at offset 8 of its EEPROM.
423 		 */
424 		memcpy(enaddr, &sc->sc_srom[8], ETHER_ADDR_LEN);
425 
426 		/*
427 		 * The ADMtek AN985 can be configured in Single-Chip
428 		 * mode or MAC-only mode.  Single-Chip uses the built-in
429 		 * PHY, MAC-only has an external PHY (usually HomePNA).
430 		 * The selection is based on an EEPROM setting, and both
431 		 * PHYs are access via MII attached to SIO.
432 		 *
433 		 * The AN985 "ghosts" the internal PHY onto all
434 		 * MII addresses, so we have to use a media init
435 		 * routine that limits the search.
436 		 * XXX How does this work with MAC-only mode?
437 		 */
438 		sc->sc_mediasw = &tlp_an985_mediasw;
439 		break;
440 
441 	case TULIP_CHIP_X3201_3:
442 		/*
443 		 * The X3201 doesn't have an SROM.  Lift the MAC address
444 		 * from the CIS.  Also, we have a special media switch:
445 		 * MII-on-SIO, plus some special GPIO setup.
446 		 */
447 		memcpy(enaddr, ca->ca_cis.funce.network.netid, sizeof(enaddr));
448 		sc->sc_reset = tlp_cardbus_x3201_reset;
449 		sc->sc_mediasw = &tlp_sio_mii_mediasw;
450 		break;
451 
452 	default:
453  cant_cope:
454 		printf("%s: sorry, unable to handle your board\n",
455 		    sc->sc_dev.dv_xname);
456 		return;
457 	}
458 
459 	/* Remember which interrupt line. */
460 	csc->sc_intrline = ca->ca_intrline;
461 
462 	/*
463 	 * The CardBus cards will make it to store-and-forward mode as
464 	 * soon as you put them under any kind of load, so just start
465 	 * out there.
466 	 */
467 	sc->sc_txthresh = TXTH_SF;
468 
469 	/*
470 	 * Finish off the attach.
471 	 */
472 	tlp_attach(sc, enaddr);
473 
474 	/*
475 	 * Power down the socket.
476 	 */
477 	Cardbus_function_disable(csc->sc_ct);
478 }
479 
480 int
481 tlp_cardbus_detach(self, flags)
482 	struct device *self;
483 	int flags;
484 {
485 	struct tulip_cardbus_softc *csc = (void *)self;
486 	struct tulip_softc *sc = &csc->sc_tulip;
487 	struct cardbus_devfunc *ct = csc->sc_ct;
488 	int rv;
489 
490 #if defined(DIAGNOSTIC)
491 	if (ct == NULL)
492 		panic("%s: data structure lacks", sc->sc_dev.dv_xname);
493 #endif
494 
495 	rv = tlp_detach(sc);
496 	if (rv)
497 		return (rv);
498 
499 	/*
500 	 * Unhook the interrupt handler.
501 	 */
502 	if (csc->sc_ih != NULL)
503 		cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, csc->sc_ih);
504 
505 	/*
506 	 * Release bus space and close window.
507 	 */
508 	if (csc->sc_bar_reg != 0)
509 		Cardbus_mapreg_unmap(ct, csc->sc_bar_reg,
510 		    sc->sc_st, sc->sc_sh, csc->sc_mapsize);
511 
512 	return (0);
513 }
514 
515 int
516 tlp_cardbus_enable(sc)
517 	struct tulip_softc *sc;
518 {
519 	struct tulip_cardbus_softc *csc = (void *) sc;
520 	cardbus_devfunc_t ct = csc->sc_ct;
521 	cardbus_chipset_tag_t cc = ct->ct_cc;
522 	cardbus_function_tag_t cf = ct->ct_cf;
523 
524 	/*
525 	 * Power on the socket.
526 	 */
527 	Cardbus_function_enable(ct);
528 
529 	/*
530 	 * Set up the PCI configuration registers.
531 	 */
532 	tlp_cardbus_setup(csc);
533 
534 	/*
535 	 * Map and establish the interrupt.
536 	 */
537 	csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET,
538 	    tlp_intr, sc);
539 	if (csc->sc_ih == NULL) {
540 		printf("%s: unable to establish interrupt at %d\n",
541 		    sc->sc_dev.dv_xname, csc->sc_intrline);
542 		Cardbus_function_disable(csc->sc_ct);
543 		return (1);
544 	}
545 	printf("%s: interrupting at %d\n", sc->sc_dev.dv_xname,
546 	    csc->sc_intrline);
547 
548 	return (0);
549 }
550 
551 void
552 tlp_cardbus_disable(sc)
553 	struct tulip_softc *sc;
554 {
555 	struct tulip_cardbus_softc *csc = (void *) sc;
556 	cardbus_devfunc_t ct = csc->sc_ct;
557 	cardbus_chipset_tag_t cc = ct->ct_cc;
558 	cardbus_function_tag_t cf = ct->ct_cf;
559 
560 	/* Unhook the interrupt handler. */
561 	cardbus_intr_disestablish(cc, cf, csc->sc_ih);
562 	csc->sc_ih = NULL;
563 
564 	/* Power down the socket. */
565 	Cardbus_function_disable(ct);
566 }
567 
568 void
569 tlp_cardbus_power(sc, why)
570 	struct tulip_softc *sc;
571 	int why;
572 {
573 	struct tulip_cardbus_softc *csc = (void *) sc;
574 
575 	if (why == PWR_RESUME) {
576 		/*
577 		 * Give the PCI configuration registers a kick
578 		 * in the head.
579 		 */
580 #ifdef DIAGNOSTIC
581 		if (TULIP_IS_ENABLED(sc) == 0)
582 			panic("tlp_cardbus_power");
583 #endif
584 		tlp_cardbus_setup(csc);
585 	}
586 }
587 
588 void
589 tlp_cardbus_setup(csc)
590 	struct tulip_cardbus_softc *csc;
591 {
592 	struct tulip_softc *sc = &csc->sc_tulip;
593 	cardbus_devfunc_t ct = csc->sc_ct;
594 	cardbus_chipset_tag_t cc = ct->ct_cc;
595 	cardbus_function_tag_t cf = ct->ct_cf;
596 	pcireg_t reg;
597 	int pmreg;
598 
599 	/*
600 	 * Check to see if the device is in power-save mode, and
601 	 * bring it out if necessary.
602 	 */
603 	switch (sc->sc_chip) {
604 	case TULIP_CHIP_21142:
605 	case TULIP_CHIP_21143:
606 	case TULIP_CHIP_X3201_3:
607 		/*
608 		 * Clear the "sleep mode" bit in the CFDA register.
609 		 */
610 		reg = cardbus_conf_read(cc, cf, csc->sc_tag, TULIP_PCI_CFDA);
611 		if (reg & (CFDA_SLEEP|CFDA_SNOOZE))
612 			cardbus_conf_write(cc, cf, csc->sc_tag, TULIP_PCI_CFDA,
613 			    reg & ~(CFDA_SLEEP|CFDA_SNOOZE));
614 		break;
615 
616 	default:
617 		/* Nothing. -- to make gcc happy */
618 		break;
619 	}
620 
621 	if (cardbus_get_capability(cc, cf, csc->sc_tag,
622 	    PCI_CAP_PWRMGMT, &pmreg, 0)) {
623 		reg = cardbus_conf_read(cc, cf, csc->sc_tag, pmreg + 4) & 0x03;
624 #if 1 /* XXX Probably not right for CardBus. */
625 		if (reg == 3) {
626 			/*
627 			 * The card has lost all configuration data in
628 			 * this state, so punt.
629 			 */
630 			printf("%s: unable to wake up from power state D3\n",
631 			    sc->sc_dev.dv_xname);
632 			return;
633 		}
634 #endif
635 		if (reg != 0) {
636 			printf("%s: waking up from power state D%d\n",
637 			    sc->sc_dev.dv_xname, reg);
638 			cardbus_conf_write(cc, cf, csc->sc_tag,
639 			    pmreg + 4, 0);
640 		}
641 	}
642 
643 	/* Make sure the right access type is on the CardBus bridge. */
644 	(*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cben);
645 	(*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
646 
647 	/* Program the BAR. */
648 	cardbus_conf_write(cc, cf, csc->sc_tag, csc->sc_bar_reg,
649 	    csc->sc_bar_val);
650 
651 	/* Enable the appropriate bits in the PCI CSR. */
652 	reg = cardbus_conf_read(cc, cf, csc->sc_tag, PCI_COMMAND_STATUS_REG);
653 	reg &= ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE);
654 	reg |= csc->sc_csr;
655 	cardbus_conf_write(cc, cf, csc->sc_tag, PCI_COMMAND_STATUS_REG, reg);
656 
657 	/*
658 	 * Make sure the latency timer is set to some reasonable
659 	 * value.
660 	 */
661 	reg = cardbus_conf_read(cc, cf, csc->sc_tag, PCI_BHLC_REG);
662 	if (PCI_LATTIMER(reg) < 0x20) {
663 		reg &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT);
664 		reg |= (0x20 << PCI_LATTIMER_SHIFT);
665 		cardbus_conf_write(cc, cf, csc->sc_tag, PCI_BHLC_REG, reg);
666 	}
667 }
668 
669 void
670 tlp_cardbus_x3201_reset(sc)
671 	struct tulip_softc *sc;
672 {
673 	u_int32_t reg;
674 
675 	reg = TULIP_READ(sc, CSR_SIAGEN);
676 
677 	/* make GP[2,0] outputs */
678 	TULIP_WRITE(sc, CSR_SIAGEN, (reg & ~SIAGEN_MD) | SIAGEN_CWE |
679 	    0x00050000);
680 	TULIP_WRITE(sc, CSR_SIAGEN, (reg & ~SIAGEN_CWE) | SIAGEN_MD);
681 }
682 
683 void
684 tlp_cardbus_lxt_quirks(csc, enaddr)
685 	struct tulip_cardbus_softc *csc;
686 	const u_int8_t *enaddr;
687 {
688 	struct tulip_softc *sc = &csc->sc_tulip;
689 
690 	sc->sc_mediasw = &tlp_sio_mii_mediasw;
691 }
692