aboutsummaryrefslogtreecommitdiff
path: root/sys/dev/vmd/vmd.c
blob: 616fd4c8373e5a3241d81cb28991c841e5d0c6d6 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright 2019 Cisco Systems, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/types.h>
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <sys/malloc.h>

#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/taskqueue.h>

#include <sys/pciio.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pci_private.h>
#include <dev/pci/pcib_private.h>

#define TASK_QUEUE_INTR 1
#include <dev/vmd/vmd.h>

#include "pcib_if.h"
#include "pci_if.h"

struct vmd_type {
	u_int16_t	vmd_vid;
	u_int16_t	vmd_did;
	char		*vmd_name;
};

#define INTEL_VENDOR_ID		0x8086
#define INTEL_DEVICE_ID_VMD	0x201d
#define INTEL_DEVICE_ID_VMD2	0x28c0

static struct vmd_type vmd_devs[] = {
        { INTEL_VENDOR_ID, INTEL_DEVICE_ID_VMD,  "Intel Volume Management Device" },
        { INTEL_VENDOR_ID, INTEL_DEVICE_ID_VMD2, "Intel Volume Management Device" },
        { 0, 0, NULL }
};

static int
vmd_probe(device_t dev)
{
	struct vmd_type *t;
	uint16_t vid, did;

	t = vmd_devs;
	vid = pci_get_vendor(dev);
	did = pci_get_device(dev);

	while (t->vmd_name != NULL) {
		if (vid == t->vmd_vid &&
			did == t->vmd_did) {
			device_set_desc(dev, t->vmd_name);
			return (BUS_PROBE_DEFAULT);
		}
		t++;
	}

return (ENXIO);
}

static void
vmd_free(struct vmd_softc *sc)
{
	int i;
	struct vmd_irq_handler *elm, *tmp;

	if (sc->vmd_bus.rman.rm_end != 0)
		rman_fini(&sc->vmd_bus.rman);

#ifdef TASK_QUEUE_INTR
	if (sc->vmd_irq_tq != NULL) {
		taskqueue_drain(sc->vmd_irq_tq, &sc->vmd_irq_task);
		taskqueue_free(sc->vmd_irq_tq);
		sc->vmd_irq_tq = NULL;
	}
#endif
	if (sc->vmd_irq != NULL) {
		for (i = 0; i < sc->vmd_msix_count; i++) {
			if (sc->vmd_irq[i].vmd_res != NULL) {
				bus_teardown_intr(sc->vmd_dev,
				    sc->vmd_irq[i].vmd_res,
				    sc->vmd_irq[i].vmd_handle);
				bus_release_resource(sc->vmd_dev, SYS_RES_IRQ,
				    sc->vmd_irq[i].vmd_rid,
				    sc->vmd_irq[i].vmd_res);
			}
		}
		TAILQ_FOREACH_SAFE(elm, &sc->vmd_irq[0].vmd_list ,vmd_link,
		    tmp) {
			TAILQ_REMOVE(&sc->vmd_irq[0].vmd_list, elm, vmd_link);
			free(elm, M_DEVBUF);
		}
	}
	free(sc->vmd_irq, M_DEVBUF);
	sc->vmd_irq = NULL;
	pci_release_msi(sc->vmd_dev);
	for (i = 0; i < VMD_MAX_BAR; i++) {
		if (sc->vmd_regs_resource[i] != NULL)
			bus_release_resource(sc->vmd_dev, SYS_RES_MEMORY,
			    sc->vmd_regs_rid[i],
			    sc->vmd_regs_resource[i]);
	}
	if (sc->vmd_io_resource)
		bus_release_resource(device_get_parent(sc->vmd_dev),
		    SYS_RES_IOPORT, sc->vmd_io_rid, sc->vmd_io_resource);

#ifndef TASK_QUEUE_INTR
	if (mtx_initialized(&sc->vmd_irq_lock)) {
		mtx_destroy(&sc->vmd_irq_lock);
	}
#endif
}

/* Hidden PCI Roots are hidden in BAR(0). */

static uint32_t
vmd_read_config(device_t dev, u_int b, u_int s, u_int f, u_int reg, int width)
{

	struct vmd_softc *sc;
	bus_addr_t offset;

	offset = (b << 20) + (s << 15) + (f << 12) + reg;
	sc = device_get_softc(dev);
	switch(width) {
	case 4:
		return (bus_space_read_4(sc->vmd_btag, sc->vmd_bhandle,
		    offset));
	case 2:
		return (bus_space_read_2(sc->vmd_btag, sc->vmd_bhandle,
		    offset));
	case 1:
		return (bus_space_read_1(sc->vmd_btag, sc->vmd_bhandle,
		    offset));
	default:
		KASSERT(1, ("Invalid width requested"));
		return (0xffffffff);
	}
}

static void
vmd_write_config(device_t dev, u_int b, u_int s, u_int f, u_int reg,
    uint32_t val, int width)
{

	struct vmd_softc *sc;
	bus_addr_t offset;

	offset = (b << 20) + (s << 15) + (f << 12) + reg;
	sc = device_get_softc(dev);

	switch(width) {
	case 4:
		return (bus_space_write_4(sc->vmd_btag, sc->vmd_bhandle,
		    offset, val));
	case 2:
		return (bus_space_write_2(sc->vmd_btag, sc->vmd_bhandle,
		    offset, val));
	case 1:
		return (bus_space_write_1(sc->vmd_btag, sc->vmd_bhandle,
		    offset, val));
	default:
		panic("Failed to specific width");
	}
}

static uint32_t
vmd_pci_read_config(device_t dev, device_t child, int reg, int width)
{
	struct pci_devinfo *dinfo = device_get_ivars(child);
	pcicfgregs *cfg = &dinfo->cfg;

	return vmd_read_config(dev, cfg->bus, cfg->slot, cfg->func, reg, width);
}

static void
vmd_pci_write_config(device_t dev, device_t child, int reg, uint32_t val,
    int width)
{
	struct pci_devinfo *dinfo = device_get_ivars(child);
	pcicfgregs *cfg = &dinfo->cfg;

	vmd_write_config(dev, cfg->bus, cfg->slot, cfg->func, reg, val, width);
}

static struct pci_devinfo *
vmd_alloc_devinfo(device_t dev)
{
	struct pci_devinfo *dinfo;

	dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
	return (dinfo);
}

static void
vmd_intr(void *arg)
{
	struct vmd_irq  *irq;
	struct vmd_softc *sc;
#ifndef TASK_QUEUE_INTR
	struct vmd_irq_handler *elm, *tmp_elm;
#endif

	irq = (struct vmd_irq *)arg;
	sc = irq->vmd_sc;
#ifdef TASK_QUEUE_INTR
	taskqueue_enqueue(sc->vmd_irq_tq, &sc->vmd_irq_task);
#else
	mtx_lock(&sc->vmd_irq_lock);
	TAILQ_FOREACH_SAFE(elm, &sc->vmd_irq[0].vmd_list, vmd_link, tmp_elm) {
		(elm->vmd_intr)(elm->vmd_arg);
	}
	mtx_unlock(&sc->vmd_irq_lock);
#endif
}

#ifdef TASK_QUEUE_INTR
static void
vmd_handle_irq(void *context, int pending)
{
	struct vmd_irq_handler *elm, *tmp_elm;
	struct vmd_softc *sc;

	sc = context;

	TAILQ_FOREACH_SAFE(elm, &sc->vmd_irq[0].vmd_list, vmd_link, tmp_elm) {
		(elm->vmd_intr)(elm->vmd_arg);
	}
}
#endif

static int
vmd_attach(device_t dev)
{
	struct vmd_softc *sc;
	struct pcib_secbus *bus;
	uint32_t bar;
	int i, j, error;
	int rid, sec_reg;
	static int b;
	static int s;
	static int f;
	int min_count = 1;
	char buf[64];

	sc = device_get_softc(dev);
	bzero(sc, sizeof(*sc));
	sc->vmd_dev = dev;
	b = s = f = 0;

	pci_enable_busmaster(dev);

#ifdef TASK_QUEUE_INTR
	sc->vmd_irq_tq = taskqueue_create_fast("vmd_taskq", M_NOWAIT,
	    taskqueue_thread_enqueue, &sc->vmd_irq_tq);
	taskqueue_start_threads(&sc->vmd_irq_tq, 1, PI_DISK, "%s taskq",
            device_get_nameunit(sc->vmd_dev));
	TASK_INIT(&sc->vmd_irq_task, 0, vmd_handle_irq, sc);
#else
	mtx_init(&sc->vmd_irq_lock, "VMD IRQ lock", NULL, MTX_DEF);
#endif
	for (i = 0, j = 0; i < VMD_MAX_BAR; i++, j++ ) {
		sc->vmd_regs_rid[i] = PCIR_BAR(j);
		bar = pci_read_config(dev, PCIR_BAR(0), 4);
		if (PCI_BAR_MEM(bar) && (bar & PCIM_BAR_MEM_TYPE) ==
		    PCIM_BAR_MEM_64)
			j++;
		if ((sc->vmd_regs_resource[i] = bus_alloc_resource_any(
		    sc->vmd_dev, SYS_RES_MEMORY, &sc->vmd_regs_rid[i],
		    RF_ACTIVE)) == NULL) {
			device_printf(dev, "Cannot allocate resources\n");
			goto fail;
		}
	}

	sc->vmd_io_rid = PCIR_IOBASEL_1;
	sc->vmd_io_resource = bus_alloc_resource_any(
	    device_get_parent(sc->vmd_dev), SYS_RES_IOPORT, &sc->vmd_io_rid,
	    RF_ACTIVE);
	if (sc->vmd_io_resource == NULL) {
		device_printf(dev, "Cannot allocate IO\n");
		goto fail;
	}

	sc->vmd_btag = rman_get_bustag(sc->vmd_regs_resource[0]);
	sc->vmd_bhandle = rman_get_bushandle(sc->vmd_regs_resource[0]);

	pci_write_config(dev, PCIR_PRIBUS_2,
	    pcib_get_bus(device_get_parent(dev)), 1);

	sec_reg = PCIR_SECBUS_1;
	bus = &sc->vmd_bus;
	bus->sub_reg = PCIR_SUBBUS_1;
	bus->sec = vmd_read_config(dev, b, s, f, sec_reg, 1);
	bus->sub = vmd_read_config(dev, b, s, f, bus->sub_reg, 1);
	bus->dev = dev;
	bus->rman.rm_start = 0;
	bus->rman.rm_end = PCI_BUSMAX;
	bus->rman.rm_type = RMAN_ARRAY;
	snprintf(buf, sizeof(buf), "%s bus numbers", device_get_nameunit(dev));
	bus->rman.rm_descr = strdup(buf, M_DEVBUF);
	error = rman_init(&bus->rman);
	if (error) {
		device_printf(dev, "Failed to initialize %s bus number rman\n",
		    device_get_nameunit(dev));
		bus->rman.rm_end = 0;
		goto fail;
	}

	/*
	 * Allocate a bus range.  This will return an existing bus range
	 * if one exists, or a new bus range if one does not.
	 */
	rid = 0;
	bus->res = bus_alloc_resource_anywhere(dev, PCI_RES_BUS, &rid,
	    min_count, 0);
	if (bus->res == NULL) {
		/*
		 * Fall back to just allocating a range of a single bus
		 * number.
		 */
		bus->res = bus_alloc_resource_anywhere(dev, PCI_RES_BUS, &rid,
		    1, 0);
	} else if (rman_get_size(bus->res) < min_count) {
		/*
		 * Attempt to grow the existing range to satisfy the
		 * minimum desired count.
		 */
		(void)bus_adjust_resource(dev, PCI_RES_BUS, bus->res,
		    rman_get_start(bus->res), rman_get_start(bus->res) +
		    min_count - 1);
	}

	/*
	 * Add the initial resource to the rman.
	 */
	if (bus->res != NULL) {
		error = rman_manage_region(&bus->rman, rman_get_start(bus->res),
		    rman_get_end(bus->res));
		if (error) {
			device_printf(dev, "Failed to add resource to rman\n");
			goto fail;
		}
		bus->sec = rman_get_start(bus->res);
		bus->sub = rman_get_end(bus->res);
	}

	sc->vmd_msix_count = pci_msix_count(dev);
	if (pci_alloc_msix(dev, &sc->vmd_msix_count) == 0) {
		sc->vmd_irq = malloc(sizeof(struct vmd_irq) *
		    sc->vmd_msix_count,
		    M_DEVBUF, M_WAITOK | M_ZERO);

		for (i = 0; i < sc->vmd_msix_count; i++) {
			sc->vmd_irq[i].vmd_rid = i + 1;
			sc->vmd_irq[i].vmd_sc = sc;
			sc->vmd_irq[i].vmd_instance = i;
			sc->vmd_irq[i].vmd_res = bus_alloc_resource_any(dev,
			    SYS_RES_IRQ, &sc->vmd_irq[i].vmd_rid,
			    RF_ACTIVE);
			if (sc->vmd_irq[i].vmd_res == NULL) {
				device_printf(dev,"Failed to alloc irq\n");
				goto fail;
			}

			TAILQ_INIT(&sc->vmd_irq[i].vmd_list);
			if (bus_setup_intr(dev, sc->vmd_irq[i].vmd_res,
			    INTR_TYPE_MISC | INTR_MPSAFE, NULL, vmd_intr,
			    &sc->vmd_irq[i], &sc->vmd_irq[i].vmd_handle)) {
				device_printf(sc->vmd_dev,
				    "Cannot set up interrupt\n");
				sc->vmd_irq[i].vmd_res = NULL;
				goto fail;
			}
		}
	}

	sc->vmd_child = device_add_child(dev, NULL, -1);
	if (sc->vmd_child == NULL) {
		device_printf(dev, "Failed to attach child\n");
		goto fail;
	}

	error = device_probe_and_attach(sc->vmd_child);
	if (error) {
		device_printf(dev, "Failed to add probe child: %d\n", error);
		(void)device_delete_child(dev, sc->vmd_child);
		goto fail;
	}

	return (0);

fail:
	vmd_free(sc);
	return (ENXIO);
}

static int
vmd_detach(device_t dev)
{
	struct vmd_softc *sc;
	int err;

	sc = device_get_softc(dev);
	if (sc->vmd_child != NULL) {
		err = bus_generic_detach(sc->vmd_child);
		if (err)
			return (err);
		err = device_delete_child(dev, sc->vmd_child);
		if (err)
			return (err);
	}
	vmd_free(sc);
	return (0);
}

/* Pass request to alloc an MSI-X message up to the parent bridge. */
static int
vmd_alloc_msix(device_t pcib, device_t dev, int *irq)
{
	struct vmd_softc *sc = device_get_softc(pcib);
	device_t bus;
	int ret;

	if (sc->vmd_flags & PCIB_DISABLE_MSIX)
		return (ENXIO);
	bus = device_get_parent(pcib);
	ret = PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq);
        return (ret);
}

static struct resource *
vmd_alloc_resource(device_t dev, device_t child, int type, int *rid,
    rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
	/* Start at max PCI vmd_domain and work down */
	if (type == PCI_RES_BUS) {
		return (pci_domain_alloc_bus(PCI_DOMAINMAX -
		    device_get_unit(dev), child, rid, start, end,
		    count, flags));
	}

	return (pcib_alloc_resource(dev, child, type, rid, start, end,
				    count, flags));
}

static int
vmd_adjust_resource(device_t dev, device_t child, int type,
    struct resource *r, rman_res_t start, rman_res_t end)
{
	struct resource *res = r;

	if (type == PCI_RES_BUS)
		return (pci_domain_adjust_bus(PCI_DOMAINMAX -
			device_get_unit(dev), child, res, start, end));
	return (pcib_adjust_resource(dev, child, type, res, start, end));
}

static int
vmd_release_resource(device_t dev, device_t child, int type, int rid,
    struct resource *r)
{
	if (type == PCI_RES_BUS)
		return (pci_domain_release_bus(PCI_DOMAINMAX -
		    device_get_unit(dev), child, rid, r));
	return (pcib_release_resource(dev, child, type, rid, r));
}

static int
vmd_shutdown(device_t dev)
{
	return (0);
}

static int
vmd_pcib_route_interrupt(device_t pcib, device_t dev, int pin)
{
	return (pcib_route_interrupt(pcib, dev, pin));
}

static int
vmd_pcib_alloc_msi(device_t pcib, device_t dev, int count, int maxcount,
    int *irqs)
{
	return (pcib_alloc_msi(pcib, dev, count, maxcount, irqs));
}

static int
vmd_pcib_release_msi(device_t pcib, device_t dev, int count, int *irqs)
{

	return (pcib_release_msi(pcib, dev, count, irqs));
}

static int
vmd_pcib_release_msix(device_t pcib, device_t dev, int irq) {
	return	pcib_release_msix(pcib, dev, irq);
}

static int
vmd_setup_intr(device_t dev, device_t child, struct resource *irq,
    int flags, driver_filter_t *filter, driver_intr_t *intr, void *arg,
    void **cookiep)
{
	struct vmd_irq_handler *elm;
	struct vmd_softc *sc;
	int i;

	sc = device_get_softc(dev);

	/*
	 * There appears to be no steering of VMD interrupts from device
	 * to VMD interrupt
	 */

	i = 0;
	elm = malloc(sizeof(*elm), M_DEVBUF, M_NOWAIT|M_ZERO);
	elm->vmd_child = child;
	elm->vmd_intr = intr;
	elm->vmd_rid = rman_get_rid(irq);
	elm->vmd_arg = arg;
	TAILQ_INSERT_TAIL(&sc->vmd_irq[i].vmd_list, elm, vmd_link);

	return (bus_generic_setup_intr(dev, child, irq, flags, filter, intr,
	    arg, cookiep));
}

static int
vmd_teardown_intr(device_t dev, device_t child, struct resource *irq,
    void *cookie)
{
	struct vmd_irq_handler *elm, *tmp;;
	struct vmd_softc *sc;

	sc = device_get_softc(dev);
	TAILQ_FOREACH_SAFE(elm, &sc->vmd_irq[0].vmd_list, vmd_link, tmp) {
		if (elm->vmd_child == child &&
		    elm->vmd_rid == rman_get_rid(irq)) {
			TAILQ_REMOVE(&sc->vmd_irq[0].vmd_list, elm, vmd_link);
			free(elm, M_DEVBUF);
		}
	}

	return (bus_generic_teardown_intr(dev, child, irq, cookie));
}

static device_method_t vmd_pci_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,			vmd_probe),
	DEVMETHOD(device_attach,		vmd_attach),
	DEVMETHOD(device_detach,		vmd_detach),
	DEVMETHOD(device_shutdown,		vmd_shutdown),

	/* Bus interface */
	DEVMETHOD(bus_read_ivar,		pcib_read_ivar),
	DEVMETHOD(bus_write_ivar,		pcib_write_ivar),
	DEVMETHOD(bus_alloc_resource,		vmd_alloc_resource),
	DEVMETHOD(bus_adjust_resource,		vmd_adjust_resource),
	DEVMETHOD(bus_release_resource,		vmd_release_resource),
	DEVMETHOD(bus_activate_resource,	bus_generic_activate_resource),
	DEVMETHOD(bus_deactivate_resource,	bus_generic_deactivate_resource),
	DEVMETHOD(bus_setup_intr,		vmd_setup_intr),
	DEVMETHOD(bus_teardown_intr,		vmd_teardown_intr),

	/* pci interface */
	DEVMETHOD(pci_read_config,		vmd_pci_read_config),
	DEVMETHOD(pci_write_config,		vmd_pci_write_config),
	DEVMETHOD(pci_alloc_devinfo,		vmd_alloc_devinfo),

	/* pcib interface */
	DEVMETHOD(pcib_maxslots,		pcib_maxslots),
	DEVMETHOD(pcib_read_config,		vmd_read_config),
	DEVMETHOD(pcib_write_config,		vmd_write_config),
	DEVMETHOD(pcib_route_interrupt,		vmd_pcib_route_interrupt),
	DEVMETHOD(pcib_alloc_msi,		vmd_pcib_alloc_msi),
	DEVMETHOD(pcib_release_msi,		vmd_pcib_release_msi),
	DEVMETHOD(pcib_alloc_msix,		vmd_alloc_msix),
	DEVMETHOD(pcib_release_msix,		vmd_pcib_release_msix),
	DEVMETHOD(pcib_map_msi,			pcib_map_msi),

	DEVMETHOD_END
};

static devclass_t vmd_devclass;

DEFINE_CLASS_0(vmd, vmd_pci_driver, vmd_pci_methods, sizeof(struct vmd_softc));
DRIVER_MODULE(vmd, pci, vmd_pci_driver, vmd_devclass, NULL, NULL);
MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, vmd,
    vmd_devs, nitems(vmd_devs) - 1);
MODULE_DEPEND(vmd, vmd_bus, 1, 1, 1);