xref: /freebsd/sys/dev/usb/usb_hub_acpi.c (revision 8eb2bee6c0f4957c6c1cea826e59cda4d18a2a64)
1 /* $FreeBSD$ */
2 /*-
3  * SPDX-License-Identifier: BSD-2-Clause-NetBSD
4  *
5  * Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved.
6  * Copyright (c) 1998 Lennart Augustsson. All rights reserved.
7  * Copyright (c) 2008-2010 Hans Petter Selasky. All rights reserved.
8  * Copyright (c) 2019 Takanori Watanabe.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 /*
33  * USB spec: http://www.usb.org/developers/docs/usbspec.zip
34  */
35 
36 #ifdef USB_GLOBAL_INCLUDE_FILE
37 #include USB_GLOBAL_INCLUDE_FILE
38 #else
39 #include <sys/stdint.h>
40 #include <sys/stddef.h>
41 #include <sys/param.h>
42 #include <sys/queue.h>
43 #include <sys/types.h>
44 #include <sys/systm.h>
45 #include <sys/kernel.h>
46 #include <sys/bus.h>
47 #include <sys/module.h>
48 #include <sys/lock.h>
49 #include <sys/mutex.h>
50 #include <sys/condvar.h>
51 #include <sys/sysctl.h>
52 #include <sys/sx.h>
53 #include <sys/unistd.h>
54 #include <sys/callout.h>
55 #include <sys/malloc.h>
56 #include <sys/priv.h>
57 
58 #include <dev/usb/usb.h>
59 #include <dev/usb/usbdi.h>
60 #include <dev/usb/usbdi_util.h>
61 
62 #define	USB_DEBUG_VAR uhub_debug
63 
64 #include <dev/usb/usb_core.h>
65 #include <dev/usb/usb_process.h>
66 #include <dev/usb/usb_device.h>
67 #include <dev/usb/usb_request.h>
68 #include <dev/usb/usb_debug.h>
69 #include <dev/usb/usb_hub.h>
70 #include <dev/usb/usb_util.h>
71 #include <dev/usb/usb_busdma.h>
72 #include <dev/usb/usb_transfer.h>
73 #include <dev/usb/usb_dynamic.h>
74 
75 #include <dev/usb/usb_controller.h>
76 #include <dev/usb/usb_bus.h>
77 #endif					/* USB_GLOBAL_INCLUDE_FILE */
78 #include <dev/usb/usb_hub_private.h>
79 #include <contrib/dev/acpica/include/acpi.h>
80 #include <contrib/dev/acpica/include/accommon.h>
81 #include <dev/acpica/acpivar.h>
82 #include <sys/sbuf.h>
83 
84 #define ACPI_PLD_SIZE 20
85 struct acpi_uhub_port {
86 	ACPI_HANDLE handle;
87 #define    ACPI_UPC_CONNECTABLE 0x80000000
88 #define    ACPI_UPC_PORTTYPE(x) ((x)&0xff)
89 	uint32_t upc;
90 	uint8_t	pld[ACPI_PLD_SIZE];
91 };
92 
93 struct acpi_uhub_softc {
94 	struct uhub_softc usc;
95 	uint8_t	nports;
96 	ACPI_HANDLE ah;
97 	struct acpi_uhub_port *port;
98 };
99 
100 static UINT32
101 acpi_uhub_find_rh_cb(ACPI_HANDLE ah, UINT32 nl, void *ctx, void **status)
102 {
103 	ACPI_DEVICE_INFO *devinfo;
104 	UINT32 ret;
105 
106 	*status = NULL;
107 	devinfo = NULL;
108 
109 	ret = AcpiGetObjectInfo(ah, &devinfo);
110 	if (ACPI_SUCCESS(ret)) {
111 		if ((devinfo->Valid & ACPI_VALID_ADR) &&
112 		    (devinfo->Address == 0)) {
113 			ret = AE_CTRL_TERMINATE;
114 			*status = ah;
115 		}
116 		AcpiOsFree(devinfo);
117 	}
118 	return (ret);
119 }
120 
121 static const char *
122 acpi_uhub_upc_type(uint8_t type)
123 {
124 	const char *typelist[] = {"TypeA", "MiniAB", "Express",
125 				  "USB3-A", "USB3-B", "USB-MicroB",
126 				  "USB3-MicroAB", "USB3-PowerB",
127 				  "TypeC-USB2", "TypeC-Switch",
128 				  "TypeC-nonSwitch"};
129 	const int last = sizeof(typelist) / sizeof(typelist[0]);
130 
131 	if (type == 0xff) {
132 		return "Proprietary";
133 	}
134 
135 	return (type < last) ? typelist[type] : "Unknown";
136 }
137 
138 static int
139 acpi_uhub_parse_upc(device_t dev, unsigned int p, ACPI_HANDLE ah, struct sysctl_oid_list *poid)
140 {
141 	ACPI_BUFFER buf;
142 	struct acpi_uhub_softc *sc = device_get_softc(dev);
143 	struct acpi_uhub_port *port = &sc->port[p - 1];
144 
145 	buf.Pointer = NULL;
146 	buf.Length = ACPI_ALLOCATE_BUFFER;
147 
148 	if (AcpiEvaluateObject(ah, "_UPC", NULL, &buf) == AE_OK) {
149 		ACPI_OBJECT *obj = buf.Pointer;
150 		UINT64 porttypenum, conn;
151 		uint8_t *connectable;
152 
153 		acpi_PkgInt(obj, 0, &conn);
154 		acpi_PkgInt(obj, 1, &porttypenum);
155 		connectable = conn ? "" : "non";
156 
157 		port->upc = porttypenum;
158 		port->upc |= (conn) ? (ACPI_UPC_CONNECTABLE) : 0;
159 
160 		if (usb_debug)
161 			device_printf(dev, "Port %u %sconnectable %s\n",
162 			    p, connectable,
163 			    acpi_uhub_upc_type(porttypenum));
164 
165 		SYSCTL_ADD_U32(
166 		    device_get_sysctl_ctx(dev),
167 		    poid, OID_AUTO,
168 		    "upc",
169 		    CTLFLAG_RD | CTLFLAG_MPSAFE,
170 		    SYSCTL_NULL_U32_PTR, port->upc,
171 		    "UPC value. MSB is visible flag");
172 	}
173 	AcpiOsFree(buf.Pointer);
174 
175 	return (0);
176 }
177 static int
178 acpi_uhub_port_sysctl(SYSCTL_HANDLER_ARGS)
179 {
180 	struct acpi_uhub_port *port = oidp->oid_arg1;
181 	struct sbuf sb;
182 	int error;
183 
184 	sbuf_new_for_sysctl(&sb, NULL, 256, req);
185 	sbuf_printf(&sb, "Handle %s\n", acpi_name(port->handle));
186 	if (port->upc == 0xffffffff) {
187 		sbuf_printf(&sb, "\tNo information\n");
188 		goto end;
189 	}
190 	sbuf_printf(&sb, "\t");
191 	if (port->upc & ACPI_UPC_CONNECTABLE) {
192 		sbuf_printf(&sb, "Connectable ");
193 	}
194 	sbuf_printf(&sb, "%s port\n", acpi_uhub_upc_type(port->upc & 0xff));
195 
196 	if ((port->pld[0] & 0x80) == 0) {
197 		sbuf_printf(&sb,
198 		    "\tColor:#%02x%02x%02x\n",
199 		    port->pld[1], port->pld[2],
200 		    port->pld[3]);
201 	}
202 	sbuf_printf(&sb, "\tWidth %d mm Height %d mm\n",
203 	    port->pld[4] | (port->pld[5] << 8),
204 	    port->pld[6] | (port->pld[7] << 8));
205 	if (port->pld[8] & 1) {
206 		sbuf_printf(&sb, "\tVisible\n");
207 	}
208 	if (port->pld[8] & 2) {
209 		sbuf_printf(&sb, "\tDock\n");
210 	}
211 	if (port->pld[8] & 4) {
212 		sbuf_printf(&sb, "\tLid\n");
213 	} {
214 		int panelpos = (port->pld[8] >> 3) & 7;
215 		const char *panposstr[] = {"Top", "Bottom", "Left",
216 					   "Right", "Front", "Back",
217 					   "Unknown", "Invalid"};
218 		const char *shapestr[] = {
219 			"Round", "Oval", "Square", "VRect", "HRect",
220 			"VTrape", "HTrape", "Unknown", "Chamferd",
221 			"Rsvd", "Rsvd", "Rsvd", "Rsvd",
222 			"Rsvd", "Rsvd", "Rsvd", "Rsvd"};
223 
224 		sbuf_printf(&sb, "\tPanelPosition: %s\n", panposstr[panelpos]);
225 		if (panelpos < 6) {
226 			const char *posstr[] = {"Upper", "Center",
227 			"Lower", "Invalid"};
228 
229 			sbuf_printf(&sb, "\tVertPosition: %s\n",
230 			    posstr[(port->pld[8] >> 6) & 3]);
231 			sbuf_printf(&sb, "\tHorizPosition: %s\n",
232 			    posstr[(port->pld[9]) & 3]);
233 		}
234 		sbuf_printf(&sb, "\tShape: %s\n",
235 		    shapestr[(port->pld[9] >> 2) & 0xf]);
236 		sbuf_printf(&sb, "\tGroup Orientation %s\n",
237 		    ((port->pld[9] >> 6) & 1) ? "Vertical" :
238 		    "Horizontal");
239 		sbuf_printf(&sb, "\tGroupToken %x\n",
240 		    ((port->pld[9] >> 7)
241 		    | (port->pld[10] << 1)) & 0xff);
242 		sbuf_printf(&sb, "\tGroupPosition %x\n",
243 		    ((port->pld[10] >> 7)
244 		    | (port->pld[11] << 1)) & 0xff);
245 		sbuf_printf(&sb, "\t%s %s %s\n",
246 		    (port->pld[11] & 0x80) ?
247 		    "Bay" : "",
248 		    (port->pld[12] & 1) ? "Eject" : "",
249 		    (port->pld[12] & 2) ? "OSPM" : ""
250 		    );
251 	}
252 	if ((port->pld[0] & 0x7f) >= 2) {
253 		sbuf_printf(&sb, "\tVOFF%d mm HOFF %dmm",
254 		    port->pld[16] | (port->pld[17] << 8),
255 		    port->pld[18] | (port->pld[19] << 8));
256 	}
257 
258 end:
259 	error = sbuf_finish(&sb);
260 	sbuf_delete(&sb);
261 	return (error);
262 }
263 
264 static int
265 acpi_uhub_parse_pld(device_t dev, unsigned int p, ACPI_HANDLE ah, struct sysctl_oid_list *tree)
266 {
267 	ACPI_BUFFER buf;
268 	struct acpi_uhub_softc *sc = device_get_softc(dev);
269 	struct acpi_uhub_port *port = &sc->port[p - 1];
270 
271 	buf.Pointer = NULL;
272 	buf.Length = ACPI_ALLOCATE_BUFFER;
273 
274 	if (AcpiEvaluateObject(ah, "_PLD", NULL, &buf) == AE_OK) {
275 		ACPI_OBJECT *obj;
276 		unsigned char *resbuf;
277 		int len;
278 
279 		obj = buf.Pointer;
280 
281 		if (obj->Type == ACPI_TYPE_PACKAGE
282 		    && obj->Package.Elements[0].Type == ACPI_TYPE_BUFFER) {
283 			ACPI_OBJECT *obj1;
284 
285 			obj1 = &obj->Package.Elements[0];
286 			len = obj1->Buffer.Length;
287 			resbuf = obj1->Buffer.Pointer;
288 		} else if (obj->Type == ACPI_TYPE_BUFFER) {
289 			len = obj->Buffer.Length;
290 			resbuf = obj->Buffer.Pointer;
291 		} else {
292 			goto skip;
293 		}
294 		len = (len < ACPI_PLD_SIZE) ? len : ACPI_PLD_SIZE;
295 		memcpy(port->pld, resbuf, len);
296 		SYSCTL_ADD_OPAQUE(
297 		    device_get_sysctl_ctx(dev), tree, OID_AUTO,
298 		    "pldraw", CTLFLAG_RD | CTLFLAG_MPSAFE,
299 		    port->pld, len, "A", "Raw PLD value");
300 
301 		if (usb_debug) {
302 			device_printf(dev, "Revision:%d\n",
303 			    resbuf[0] & 0x7f);
304 			if ((resbuf[0] & 0x80) == 0) {
305 				device_printf(dev,
306 				    "Color:#%02x%02x%02x\n",
307 				    resbuf[1], resbuf[2],
308 				    resbuf[3]);
309 			}
310 			device_printf(dev, "Width %d mm Height %d mm\n",
311 			    resbuf[4] | (resbuf[5] << 8),
312 			    resbuf[6] | (resbuf[7] << 8));
313 			if (resbuf[8] & 1) {
314 				device_printf(dev, "Visible\n");
315 			}
316 			if (resbuf[8] & 2) {
317 				device_printf(dev, "Dock\n");
318 			}
319 			if (resbuf[8] & 4) {
320 				device_printf(dev, "Lid\n");
321 			}
322 			device_printf(dev, "PanelPosition: %d\n",
323 			    (resbuf[8] >> 3) & 7);
324 			device_printf(dev, "VertPosition: %d\n",
325 			    (resbuf[8] >> 6) & 3);
326 			device_printf(dev, "HorizPosition: %d\n",
327 			    (resbuf[9]) & 3);
328 			device_printf(dev, "Shape: %d\n",
329 			    (resbuf[9] >> 2) & 0xf);
330 			device_printf(dev, "80: %02x, %02x, %02x\n",
331 			    resbuf[9], resbuf[10], resbuf[11]);
332 			device_printf(dev, "96: %02x, %02x, %02x, %02x\n",
333 			    resbuf[12], resbuf[13],
334 			    resbuf[14], resbuf[15]);
335 
336 			if ((resbuf[0] & 0x7f) >= 2) {
337 				device_printf(dev, "VOFF%d mm HOFF %dmm",
338 				    resbuf[16] | (resbuf[17] << 8),
339 				    resbuf[18] | (resbuf[19] << 8));
340 			}
341 		}
342 	skip:
343 		AcpiOsFree(buf.Pointer);
344 	}
345 	return (0);
346 }
347 
348 static ACPI_STATUS
349 acpi_uhub_find_rh(device_t dev, ACPI_HANDLE *ah)
350 {
351 	device_t grand;
352 	ACPI_HANDLE gah;
353 
354 	*ah = NULL;
355 	grand = device_get_parent(device_get_parent(dev));
356 
357 	if ((gah = acpi_get_handle(grand)) == NULL)
358 		return (AE_ERROR);
359 
360 	return (AcpiWalkNamespace(ACPI_TYPE_DEVICE, gah, 1,
361 	    acpi_uhub_find_rh_cb, NULL, dev, ah));
362 }
363 
364 static ACPI_STATUS
365 acpi_usb_hub_port_probe_cb(ACPI_HANDLE ah, UINT32 lv, void *ctx, void **rv)
366 {
367 	ACPI_DEVICE_INFO *devinfo;
368 	device_t dev = ctx;
369 	struct acpi_uhub_softc *sc = device_get_softc(dev);
370 	UINT32 ret;
371 
372 	ret = AcpiGetObjectInfo(ah, &devinfo);
373 	if (ACPI_SUCCESS(ret)) {
374 		if ((devinfo->Valid & ACPI_VALID_ADR) &&
375 		    (devinfo->Address > 0) &&
376 		    (devinfo->Address <= (uint64_t)sc->nports)) {
377 			char buf[] = "portXXX";
378 			struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev);
379 			struct sysctl_oid *oid;
380 			struct sysctl_oid_list *tree;
381 
382 			snprintf(buf, sizeof(buf), "port%ju",
383 			    (uintmax_t)devinfo->Address);
384 			oid = SYSCTL_ADD_NODE(ctx,
385 			    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
386 			        OID_AUTO, buf, CTLFLAG_RD | CTLFLAG_MPSAFE,
387 				NULL, "port nodes");
388 			tree = SYSCTL_CHILDREN(oid);
389 			sc->port[devinfo->Address - 1].handle = ah;
390 			sc->port[devinfo->Address - 1].upc = 0xffffffff;
391 			acpi_uhub_parse_upc(dev, devinfo->Address, ah, tree);
392 			acpi_uhub_parse_pld(dev, devinfo->Address, ah, tree);
393 			SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), tree,
394 			    OID_AUTO, "info",
395 			    CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE,
396 			    &sc->port[devinfo->Address - 1], 0,
397 			    acpi_uhub_port_sysctl, "A", "Port information");
398 		}
399 		AcpiOsFree(devinfo);
400 	}
401 	return (AE_OK);
402 }
403 
404 static ACPI_STATUS
405 acpi_usb_hub_port_probe(device_t dev, ACPI_HANDLE ah)
406 {
407 	return (AcpiWalkNamespace(ACPI_TYPE_DEVICE,
408 	    ah, 1,
409 	    acpi_usb_hub_port_probe_cb,
410 	    NULL, dev, NULL));
411 }
412 
413 static int
414 acpi_uhub_root_probe(device_t dev)
415 {
416 	ACPI_STATUS status;
417 	ACPI_HANDLE ah;
418 
419 	if (acpi_disabled("usb"))
420 		return (ENXIO);
421 
422 	status = acpi_uhub_find_rh(dev, &ah);
423 	if (ACPI_SUCCESS(status) && ah != NULL &&
424 	    uhub_probe(dev) <= 0) {
425 		/* success prior than non-ACPI USB HUB */
426 		return (BUS_PROBE_DEFAULT + 1);
427 	}
428 	return (ENXIO);
429 }
430 
431 static int
432 acpi_uhub_probe(device_t dev)
433 {
434 	ACPI_HANDLE ah;
435 
436 	if (acpi_disabled("usb"))
437 		return (ENXIO);
438 
439 	ah = acpi_get_handle(dev);
440 	if (ah == NULL)
441 		return (ENXIO);
442 
443 	if (uhub_probe(dev) <= 0) {
444 		/* success prior than non-ACPI USB HUB */
445 		return (BUS_PROBE_DEFAULT + 1);
446 	}
447 	return (ENXIO);
448 }
449 static int
450 acpi_uhub_attach_common(device_t dev)
451 {
452 	struct usb_hub *uh;
453 	struct acpi_uhub_softc *sc = device_get_softc(dev);
454 	ACPI_STATUS status;
455 	int ret = ENXIO;
456 
457 	uh = sc->usc.sc_udev->hub;
458 	sc->nports = uh->nports;
459 	sc->port = malloc(sizeof(struct acpi_uhub_port) * uh->nports,
460 	    M_USBDEV, M_WAITOK | M_ZERO);
461 	status = acpi_usb_hub_port_probe(dev, sc->ah);
462 
463 	if (ACPI_SUCCESS(status)){
464 		ret = 0;
465 	}
466 
467 	return (ret);
468 }
469 
470 static int
471 acpi_uhub_detach(device_t dev)
472 {
473 	struct acpi_uhub_softc *sc = device_get_softc(dev);
474 
475 	free(sc->port, M_USBDEV);
476 
477 	return (uhub_detach(dev));
478 }
479 
480 static int
481 acpi_uhub_root_attach(device_t dev)
482 {
483 	int ret;
484 	struct acpi_uhub_softc *sc = device_get_softc(dev);
485 
486 	if (ACPI_FAILURE(acpi_uhub_find_rh(dev, &sc->ah)) ||
487 	    (sc->ah == NULL)) {
488 		return (ENXIO);
489 	}
490 	if ((ret = uhub_attach(dev)) != 0) {
491 		return (ret);
492 	}
493 
494 	if ((ret = acpi_uhub_attach_common(dev)) != 0) {
495 		acpi_uhub_detach(dev);
496 	}
497 	return ret;
498 }
499 
500 static int
501 acpi_uhub_attach(device_t dev)
502 {
503 	int ret;
504 	struct acpi_uhub_softc *sc = device_get_softc(dev);
505 
506 	sc->ah = acpi_get_handle(dev);
507 
508 	if (sc->ah == NULL) {
509 		return (ENXIO);
510 	}
511 	if ((ret = uhub_attach(dev)) != 0) {
512 		return (ret);
513 	}
514 
515 	if ((ret = acpi_uhub_attach_common(dev)) != 0) {
516 		acpi_uhub_detach(dev);
517 	}
518 
519 	return (ret);
520 }
521 
522 static int
523 acpi_uhub_read_ivar(device_t dev, device_t child, int idx, uintptr_t *res)
524 {
525 	struct hub_result hres;
526 	struct acpi_uhub_softc *sc = device_get_softc(dev);
527 	ACPI_HANDLE ah;
528 
529 	bus_topo_lock();
530 	uhub_find_iface_index(sc->usc.sc_udev->hub, child, &hres);
531 	bus_topo_unlock();
532 
533 	if ((idx == ACPI_IVAR_HANDLE) &&
534 	    (hres.portno > 0) &&
535 	    (hres.portno <= sc->nports) &&
536 	    (ah = sc->port[hres.portno - 1].handle)) {
537 		*res = (uintptr_t)ah;
538 		return (0);
539 	}
540 	return (ENXIO);
541 }
542 
543 static int
544 acpi_uhub_child_location(device_t parent, device_t child, struct sbuf *sb)
545 {
546 	ACPI_HANDLE ah;
547 
548 	uhub_child_location(parent, child, sb);
549 
550 	ah = acpi_get_handle(child);
551 	if (ah != NULL)
552 		sbuf_printf(sb, " handle=%s", acpi_name(ah));
553 	return (0);
554 }
555 
556 static int
557 acpi_uhub_get_device_path(device_t bus, device_t child, const char *locator, struct sbuf *sb)
558 {
559 	if (strcmp(locator, BUS_LOCATOR_ACPI) == 0)
560 		return (acpi_get_acpi_device_path(bus, child, locator, sb));
561 
562 	/* Otherwise call the parent class' method. */
563 	return (uhub_get_device_path(bus, child, locator, sb));
564 }
565 
566 static device_method_t acpi_uhub_methods[] = {
567 	DEVMETHOD(device_probe, acpi_uhub_probe),
568 	DEVMETHOD(device_attach, acpi_uhub_attach),
569 	DEVMETHOD(device_detach, acpi_uhub_detach),
570 	DEVMETHOD(bus_child_location, acpi_uhub_child_location),
571 	DEVMETHOD(bus_get_device_path, acpi_uhub_get_device_path),
572 	DEVMETHOD(bus_read_ivar, acpi_uhub_read_ivar),
573 	DEVMETHOD_END
574 
575 };
576 
577 static device_method_t acpi_uhub_root_methods[] = {
578 	DEVMETHOD(device_probe, acpi_uhub_root_probe),
579 	DEVMETHOD(device_attach, acpi_uhub_root_attach),
580 	DEVMETHOD(device_detach, acpi_uhub_detach),
581 	DEVMETHOD(bus_read_ivar, acpi_uhub_read_ivar),
582 	DEVMETHOD(bus_child_location, acpi_uhub_child_location),
583 	DEVMETHOD(bus_get_device_path, acpi_uhub_get_device_path),
584 	DEVMETHOD_END
585 };
586 
587 extern driver_t uhub_driver;
588 static kobj_class_t uhub_baseclasses[] = {&uhub_driver, NULL};
589 
590 static driver_t acpi_uhub_driver = {
591 	.name = "uhub",
592 	.methods = acpi_uhub_methods,
593 	.size = sizeof(struct acpi_uhub_softc),
594 	.baseclasses = uhub_baseclasses,
595 };
596 
597 static driver_t acpi_uhub_root_driver = {
598 	.name = "uhub",
599 	.methods = acpi_uhub_root_methods,
600 	.size = sizeof(struct acpi_uhub_softc),
601 	.baseclasses = uhub_baseclasses,
602 };
603 
604 DRIVER_MODULE(uacpi, uhub, acpi_uhub_driver, 0, 0);
605 DRIVER_MODULE(uacpi, usbus, acpi_uhub_root_driver, 0, 0);
606 
607 MODULE_DEPEND(uacpi, acpi, 1, 1, 1);
608 MODULE_DEPEND(uacpi, usb, 1, 1, 1);
609 
610 MODULE_VERSION(uacpi, 1);
611