xref: /freebsd/sys/powerpc/powermac/macio.c (revision 4c9e27bd0a5f7fda85b0c0bf750575aee300a172)
1 /*-
2  * Copyright 2002 by Peter Grehan. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  * 3. The name of the author may not be used to endorse or promote products
13  *    derived from this software without specific prior written permission.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  *
27  * $FreeBSD$
28  */
29 
30 /*
31  * Driver for KeyLargo/Pangea, the MacPPC south bridge ASIC.
32  */
33 
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
39 #include <sys/bus.h>
40 #include <sys/rman.h>
41 
42 #include <vm/vm.h>
43 #include <vm/pmap.h>
44 
45 #include <machine/bus.h>
46 #include <machine/intr_machdep.h>
47 #include <machine/pmap.h>
48 #include <machine/resource.h>
49 #include <machine/vmparam.h>
50 
51 #include <dev/ofw/ofw_bus.h>
52 #include <dev/ofw/ofw_bus_subr.h>
53 #include <dev/ofw/openfirm.h>
54 
55 #include <powerpc/powermac/maciovar.h>
56 
57 #include <dev/pci/pcivar.h>
58 #include <dev/pci/pcireg.h>
59 
60 /*
61  * Macio softc
62  */
63 struct macio_softc {
64 	phandle_t    sc_node;
65 	vm_offset_t  sc_base;
66 	vm_offset_t  sc_size;
67 	struct rman  sc_mem_rman;
68 
69 	/* FCR registers */
70 	int          sc_memrid;
71 	struct resource	*sc_memr;
72 };
73 
74 static MALLOC_DEFINE(M_MACIO, "macio", "macio device information");
75 
76 static int  macio_probe(device_t);
77 static int  macio_attach(device_t);
78 static int  macio_print_child(device_t dev, device_t child);
79 static void macio_probe_nomatch(device_t, device_t);
80 static struct   resource *macio_alloc_resource(device_t, device_t, int, int *,
81 					       u_long, u_long, u_long, u_int);
82 static int  macio_activate_resource(device_t, device_t, int, int,
83 				    struct resource *);
84 static int  macio_deactivate_resource(device_t, device_t, int, int,
85 				      struct resource *);
86 static int  macio_release_resource(device_t, device_t, int, int,
87 				   struct resource *);
88 static struct resource_list *macio_get_resource_list (device_t, device_t);
89 static ofw_bus_get_devinfo_t macio_get_devinfo;
90 
91 /*
92  * Bus interface definition
93  */
94 static device_method_t macio_methods[] = {
95 	/* Device interface */
96 	DEVMETHOD(device_probe,         macio_probe),
97 	DEVMETHOD(device_attach,        macio_attach),
98 	DEVMETHOD(device_detach,        bus_generic_detach),
99 	DEVMETHOD(device_shutdown,      bus_generic_shutdown),
100 	DEVMETHOD(device_suspend,       bus_generic_suspend),
101 	DEVMETHOD(device_resume,        bus_generic_resume),
102 
103 	/* Bus interface */
104 	DEVMETHOD(bus_print_child,      macio_print_child),
105 	DEVMETHOD(bus_probe_nomatch,    macio_probe_nomatch),
106 	DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
107 	DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
108 
109         DEVMETHOD(bus_alloc_resource,   macio_alloc_resource),
110         DEVMETHOD(bus_release_resource, macio_release_resource),
111         DEVMETHOD(bus_activate_resource, macio_activate_resource),
112         DEVMETHOD(bus_deactivate_resource, macio_deactivate_resource),
113         DEVMETHOD(bus_get_resource_list, macio_get_resource_list),
114 
115 	DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
116 
117 	/* ofw_bus interface */
118 	DEVMETHOD(ofw_bus_get_devinfo,	macio_get_devinfo),
119 	DEVMETHOD(ofw_bus_get_compat,	ofw_bus_gen_get_compat),
120 	DEVMETHOD(ofw_bus_get_model,	ofw_bus_gen_get_model),
121 	DEVMETHOD(ofw_bus_get_name,	ofw_bus_gen_get_name),
122 	DEVMETHOD(ofw_bus_get_node,	ofw_bus_gen_get_node),
123 	DEVMETHOD(ofw_bus_get_type,	ofw_bus_gen_get_type),
124 
125 	{ 0, 0 }
126 };
127 
128 static driver_t macio_pci_driver = {
129         "macio",
130         macio_methods,
131 	sizeof(struct macio_softc)
132 };
133 
134 devclass_t macio_devclass;
135 
136 DRIVER_MODULE(macio, pci, macio_pci_driver, macio_devclass, 0, 0);
137 
138 /*
139  * PCI ID search table
140  */
141 static struct macio_pci_dev {
142         u_int32_t  mpd_devid;
143 	char    *mpd_desc;
144 } macio_pci_devlist[] = {
145 	{ 0x0017106b, "Paddington I/O Controller" },
146 	{ 0x0022106b, "KeyLargo I/O Controller" },
147 	{ 0x0025106b, "Pangea I/O Controller" },
148 	{ 0x003e106b, "Intrepid I/O Controller" },
149 	{ 0x0041106b, "K2 KeyLargo I/O Controller" },
150 	{ 0x004f106b, "Shasta I/O Controller" },
151 	{ 0, NULL }
152 };
153 
154 /*
155  * Devices to exclude from the probe
156  * XXX some of these may be required in the future...
157  */
158 #define	MACIO_QUIRK_IGNORE		0x00000001
159 #define	MACIO_QUIRK_CHILD_HAS_INTR	0x00000002
160 #define	MACIO_QUIRK_USE_CHILD_REG	0x00000004
161 
162 struct macio_quirk_entry {
163 	const char	*mq_name;
164 	int		mq_quirks;
165 };
166 
167 static struct macio_quirk_entry macio_quirks[] = {
168 	{ "escc-legacy",		MACIO_QUIRK_IGNORE },
169 	{ "timer",			MACIO_QUIRK_IGNORE },
170 	{ "escc",			MACIO_QUIRK_CHILD_HAS_INTR },
171         { "i2s", 			MACIO_QUIRK_CHILD_HAS_INTR |
172 					MACIO_QUIRK_USE_CHILD_REG },
173 	{ NULL,				0 }
174 };
175 
176 static int
177 macio_get_quirks(const char *name)
178 {
179         struct	macio_quirk_entry *mqe;
180 
181         for (mqe = macio_quirks; mqe->mq_name != NULL; mqe++)
182                 if (strcmp(name, mqe->mq_name) == 0)
183                         return (mqe->mq_quirks);
184         return (0);
185 }
186 
187 
188 /*
189  * Add an interrupt to the dev's resource list if present
190  */
191 static void
192 macio_add_intr(phandle_t devnode, struct macio_devinfo *dinfo)
193 {
194 	phandle_t iparent;
195 	int	*intr;
196 	int	i, nintr;
197 	int 	icells;
198 
199 	if (dinfo->mdi_ninterrupts >= 6) {
200 		printf("macio: device has more than 6 interrupts\n");
201 		return;
202 	}
203 
204 	nintr = OF_getprop_alloc(devnode, "interrupts", sizeof(*intr),
205 		(void **)&intr);
206 	if (nintr == -1) {
207 		nintr = OF_getprop_alloc(devnode, "AAPL,interrupts",
208 			sizeof(*intr), (void **)&intr);
209 		if (nintr == -1)
210 			return;
211 	}
212 
213 	if (intr[0] == -1)
214 		return;
215 
216 	if (OF_getprop(devnode, "interrupt-parent", &iparent, sizeof(iparent))
217 	    <= 0)
218 		panic("Interrupt but no interrupt parent!\n");
219 
220 	if (OF_getprop(OF_xref_phandle(iparent), "#interrupt-cells", &icells,
221 	    sizeof(icells)) <= 0)
222 		icells = 1;
223 
224 	for (i = 0; i < nintr; i+=icells) {
225 		u_int irq = MAP_IRQ(iparent, intr[i]);
226 
227 		resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ,
228 		    dinfo->mdi_ninterrupts, irq, irq, 1);
229 
230 		dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = irq;
231 		dinfo->mdi_ninterrupts++;
232 	}
233 }
234 
235 
236 static void
237 macio_add_reg(phandle_t devnode, struct macio_devinfo *dinfo)
238 {
239 	struct	macio_reg *reg;
240 	int	i, nreg;
241 
242 	nreg = OF_getprop_alloc(devnode, "reg", sizeof(*reg), (void **)&reg);
243 	if (nreg == -1)
244 		return;
245 
246 	for (i = 0; i < nreg; i++) {
247 		resource_list_add(&dinfo->mdi_resources, SYS_RES_MEMORY, i,
248 		    reg[i].mr_base, reg[i].mr_base + reg[i].mr_size,
249 		    reg[i].mr_size);
250 	}
251 }
252 
253 /*
254  * PCI probe
255  */
256 static int
257 macio_probe(device_t dev)
258 {
259         int i;
260         u_int32_t devid;
261 
262         devid = pci_get_devid(dev);
263         for (i = 0; macio_pci_devlist[i].mpd_desc != NULL; i++) {
264                 if (devid == macio_pci_devlist[i].mpd_devid) {
265                         device_set_desc(dev, macio_pci_devlist[i].mpd_desc);
266                         return (0);
267                 }
268         }
269 
270         return (ENXIO);
271 }
272 
273 /*
274  * PCI attach: scan Open Firmware child nodes, and attach these as children
275  * of the macio bus
276  */
277 static int
278 macio_attach(device_t dev)
279 {
280 	struct macio_softc *sc;
281         struct macio_devinfo *dinfo;
282         phandle_t  root;
283 	phandle_t  child;
284 	phandle_t  subchild;
285         device_t cdev;
286         u_int reg[3];
287 	int error, quirks;
288 
289 	sc = device_get_softc(dev);
290 	root = sc->sc_node = ofw_bus_get_node(dev);
291 
292 	/*
293 	 * Locate the device node and it's base address
294 	 */
295 	if (OF_getprop(root, "assigned-addresses",
296 		       reg, sizeof(reg)) < (ssize_t)sizeof(reg)) {
297 		return (ENXIO);
298 	}
299 
300 	sc->sc_base = reg[2];
301 	sc->sc_size = MACIO_REG_SIZE;
302 
303 	sc->sc_memrid = PCIR_BAR(0);
304 	sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
305 	    &sc->sc_memrid, RF_ACTIVE);
306 
307 	sc->sc_mem_rman.rm_type = RMAN_ARRAY;
308 	sc->sc_mem_rman.rm_descr = "MacIO Device Memory";
309 	error = rman_init(&sc->sc_mem_rman);
310 	if (error) {
311 		device_printf(dev, "rman_init() failed. error = %d\n", error);
312 		return (error);
313 	}
314 	error = rman_manage_region(&sc->sc_mem_rman, 0, sc->sc_size);
315 	if (error) {
316 		device_printf(dev,
317 		    "rman_manage_region() failed. error = %d\n", error);
318 		return (error);
319 	}
320 
321 	/*
322 	 * Iterate through the sub-devices
323 	 */
324 	for (child = OF_child(root); child != 0; child = OF_peer(child)) {
325 		dinfo = malloc(sizeof(*dinfo), M_MACIO, M_WAITOK | M_ZERO);
326 		if (ofw_bus_gen_setup_devinfo(&dinfo->mdi_obdinfo, child) !=
327 		    0) {
328 			free(dinfo, M_MACIO);
329 			continue;
330 		}
331 		quirks = macio_get_quirks(dinfo->mdi_obdinfo.obd_name);
332 		if ((quirks & MACIO_QUIRK_IGNORE) != 0) {
333 			ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo);
334 			free(dinfo, M_MACIO);
335 			continue;
336 		}
337 		resource_list_init(&dinfo->mdi_resources);
338 		dinfo->mdi_ninterrupts = 0;
339 		macio_add_intr(child, dinfo);
340 		if ((quirks & MACIO_QUIRK_USE_CHILD_REG) != 0)
341 			macio_add_reg(OF_child(child), dinfo);
342 		else
343 			macio_add_reg(child, dinfo);
344 		if ((quirks & MACIO_QUIRK_CHILD_HAS_INTR) != 0)
345 			for (subchild = OF_child(child); subchild != 0;
346 			    subchild = OF_peer(subchild))
347 				macio_add_intr(subchild, dinfo);
348 		cdev = device_add_child(dev, NULL, -1);
349 		if (cdev == NULL) {
350 			device_printf(dev, "<%s>: device_add_child failed\n",
351 			    dinfo->mdi_obdinfo.obd_name);
352 			resource_list_free(&dinfo->mdi_resources);
353 			ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo);
354 			free(dinfo, M_MACIO);
355 			continue;
356 		}
357 		device_set_ivars(cdev, dinfo);
358 
359 		/* Set FCRs to enable some devices */
360 		if (sc->sc_memr == NULL)
361 			continue;
362 
363 		if (strcmp(ofw_bus_get_name(cdev), "bmac") == 0 ||
364 		    strcmp(ofw_bus_get_compat(cdev), "bmac+") == 0) {
365 			uint32_t fcr;
366 
367 			fcr = bus_read_4(sc->sc_memr, HEATHROW_FCR);
368 
369 			fcr |= FCR_ENET_ENABLE & ~FCR_ENET_RESET;
370 			bus_write_4(sc->sc_memr, HEATHROW_FCR, fcr);
371 			DELAY(50000);
372 			fcr |= FCR_ENET_RESET;
373 			bus_write_4(sc->sc_memr, HEATHROW_FCR, fcr);
374 			DELAY(50000);
375 			fcr &= ~FCR_ENET_RESET;
376 			bus_write_4(sc->sc_memr, HEATHROW_FCR, fcr);
377 			DELAY(50000);
378 
379 			bus_write_4(sc->sc_memr, HEATHROW_FCR, fcr);
380 		}
381 	}
382 
383 	return (bus_generic_attach(dev));
384 }
385 
386 
387 static int
388 macio_print_child(device_t dev, device_t child)
389 {
390         struct macio_devinfo *dinfo;
391         struct resource_list *rl;
392         int retval = 0;
393 
394         dinfo = device_get_ivars(child);
395         rl = &dinfo->mdi_resources;
396 
397         retval += bus_print_child_header(dev, child);
398 
399         retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
400         retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
401 
402         retval += bus_print_child_footer(dev, child);
403 
404         return (retval);
405 }
406 
407 
408 static void
409 macio_probe_nomatch(device_t dev, device_t child)
410 {
411         struct macio_devinfo *dinfo;
412         struct resource_list *rl;
413 	const char *type;
414 
415 	if (bootverbose) {
416 		dinfo = device_get_ivars(child);
417 		rl = &dinfo->mdi_resources;
418 
419 		if ((type = ofw_bus_get_type(child)) == NULL)
420 			type = "(unknown)";
421 		device_printf(dev, "<%s, %s>", type, ofw_bus_get_name(child));
422 		resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
423 		resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
424 		printf(" (no driver attached)\n");
425 	}
426 }
427 
428 
429 static struct resource *
430 macio_alloc_resource(device_t bus, device_t child, int type, int *rid,
431 		     u_long start, u_long end, u_long count, u_int flags)
432 {
433 	struct		macio_softc *sc;
434 	int		needactivate;
435 	struct		resource *rv;
436 	struct		rman *rm;
437 	u_long		adjstart, adjend, adjcount;
438 	struct		macio_devinfo *dinfo;
439 	struct		resource_list_entry *rle;
440 
441 	sc = device_get_softc(bus);
442 	dinfo = device_get_ivars(child);
443 
444 	needactivate = flags & RF_ACTIVE;
445 	flags &= ~RF_ACTIVE;
446 
447 	switch (type) {
448 	case SYS_RES_MEMORY:
449 	case SYS_RES_IOPORT:
450 		rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_MEMORY,
451 		    *rid);
452 		if (rle == NULL) {
453 			device_printf(bus, "no rle for %s memory %d\n",
454 			    device_get_nameunit(child), *rid);
455 			return (NULL);
456 		}
457 
458 		if (start < rle->start)
459 			adjstart = rle->start;
460 		else if (start > rle->end)
461 			adjstart = rle->end;
462 		else
463 			adjstart = start;
464 
465 		if (end < rle->start)
466 			adjend = rle->start;
467 		else if (end > rle->end)
468 			adjend = rle->end;
469 		else
470 			adjend = end;
471 
472 		adjcount = adjend - adjstart;
473 
474 		rm = &sc->sc_mem_rman;
475 		break;
476 
477 	case SYS_RES_IRQ:
478 		/* Check for passthrough from subattachments like macgpio */
479 		if (device_get_parent(child) != bus)
480 			return BUS_ALLOC_RESOURCE(device_get_parent(bus), child,
481 			    type, rid, start, end, count, flags);
482 
483 		rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_IRQ,
484 		    *rid);
485 		if (rle == NULL) {
486 			if (dinfo->mdi_ninterrupts >= 6) {
487 				device_printf(bus,
488 				    "%s has more than 6 interrupts\n",
489 				    device_get_nameunit(child));
490 				return (NULL);
491 			}
492 			resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ,
493 			    dinfo->mdi_ninterrupts, start, start, 1);
494 
495 			dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = start;
496 			dinfo->mdi_ninterrupts++;
497 		}
498 
499 		return (resource_list_alloc(&dinfo->mdi_resources, bus, child,
500 		    type, rid, start, end, count, flags));
501 
502 	default:
503 		device_printf(bus, "unknown resource request from %s\n",
504 			      device_get_nameunit(child));
505 		return (NULL);
506 	}
507 
508 	rv = rman_reserve_resource(rm, adjstart, adjend, adjcount, flags,
509 	    child);
510 	if (rv == NULL) {
511 		device_printf(bus,
512 		    "failed to reserve resource %#lx - %#lx (%#lx) for %s\n",
513 		    adjstart, adjend, adjcount, device_get_nameunit(child));
514 		return (NULL);
515 	}
516 
517 	rman_set_rid(rv, *rid);
518 
519 	if (needactivate) {
520 		if (bus_activate_resource(child, type, *rid, rv) != 0) {
521                         device_printf(bus,
522 				      "failed to activate resource for %s\n",
523 				      device_get_nameunit(child));
524 			rman_release_resource(rv);
525 			return (NULL);
526                 }
527         }
528 
529 	return (rv);
530 }
531 
532 
533 static int
534 macio_release_resource(device_t bus, device_t child, int type, int rid,
535 		       struct resource *res)
536 {
537 	if (rman_get_flags(res) & RF_ACTIVE) {
538 		int error = bus_deactivate_resource(child, type, rid, res);
539 		if (error)
540 			return error;
541 	}
542 
543 	return (rman_release_resource(res));
544 }
545 
546 
547 static int
548 macio_activate_resource(device_t bus, device_t child, int type, int rid,
549 			   struct resource *res)
550 {
551 	struct macio_softc *sc;
552 	void    *p;
553 
554 	sc = device_get_softc(bus);
555 
556 	if (type == SYS_RES_IRQ)
557                 return (bus_activate_resource(bus, type, rid, res));
558 
559 	if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
560 		p = pmap_mapdev((vm_offset_t)rman_get_start(res) + sc->sc_base,
561 				(vm_size_t)rman_get_size(res));
562 		if (p == NULL)
563 			return (ENOMEM);
564 		rman_set_virtual(res, p);
565 		rman_set_bustag(res, &bs_le_tag);
566 		rman_set_bushandle(res, (u_long)p);
567 	}
568 
569 	return (rman_activate_resource(res));
570 }
571 
572 
573 static int
574 macio_deactivate_resource(device_t bus, device_t child, int type, int rid,
575 			  struct resource *res)
576 {
577         /*
578          * If this is a memory resource, unmap it.
579          */
580         if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
581 		u_int32_t psize;
582 
583 		psize = rman_get_size(res);
584 		pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize);
585 	}
586 
587 	return (rman_deactivate_resource(res));
588 }
589 
590 
591 static struct resource_list *
592 macio_get_resource_list (device_t dev, device_t child)
593 {
594 	struct macio_devinfo *dinfo;
595 
596 	dinfo = device_get_ivars(child);
597 	return (&dinfo->mdi_resources);
598 }
599 
600 static const struct ofw_bus_devinfo *
601 macio_get_devinfo(device_t dev, device_t child)
602 {
603 	struct macio_devinfo *dinfo;
604 
605 	dinfo = device_get_ivars(child);
606 	return (&dinfo->mdi_obdinfo);
607 }
608 
609 int
610 macio_enable_wireless(device_t dev, bool enable)
611 {
612 	struct macio_softc *sc = device_get_softc(dev);
613 	uint32_t x;
614 
615 	if (enable) {
616 		x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
617 		x |= 0x4;
618 		bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
619 
620 		/* Enable card slot. */
621 		bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0f, 5);
622 		DELAY(1000);
623 		bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0f, 4);
624 		DELAY(1000);
625 		x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
626 		x &= ~0x80000000;
627 
628 		bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
629 		/* out8(gpio + 0x10, 4); */
630 
631 		bus_write_1(sc->sc_memr, KEYLARGO_EXTINT_GPIO_REG_BASE + 0x0b, 0);
632 		bus_write_1(sc->sc_memr, KEYLARGO_EXTINT_GPIO_REG_BASE + 0x0a, 0x28);
633 		bus_write_1(sc->sc_memr, KEYLARGO_EXTINT_GPIO_REG_BASE + 0x0d, 0x28);
634 		bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0d, 0x28);
635 		bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0e, 0x28);
636 		bus_write_4(sc->sc_memr, 0x1c000, 0);
637 
638 		/* Initialize the card. */
639 		bus_write_4(sc->sc_memr, 0x1a3e0, 0x41);
640 		x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
641 		x |= 0x80000000;
642 		bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
643 	} else {
644 		x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
645 		x &= ~0x4;
646 		bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
647 		/* out8(gpio + 0x10, 0); */
648 	}
649 
650 	return (0);
651 }
652