1/*	$NetBSD: vmbus_acpi.c,v 1.4 2021/01/29 15:49:55 thorpej Exp $	*/
2
3/*
4 * Copyright (c) 2018 Kimihiro Nonaka <nonaka@NetBSD.org>
5 * 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. 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
28#include <sys/cdefs.h>
29__KERNEL_RCSID(0, "$NetBSD: vmbus_acpi.c,v 1.4 2021/01/29 15:49:55 thorpej Exp $");
30
31#include <sys/param.h>
32#include <sys/device.h>
33#include <sys/systm.h>
34#include <sys/kmem.h>
35
36#include <dev/acpi/acpireg.h>
37#include <dev/acpi/acpivar.h>
38
39#include <dev/hyperv/vmbusvar.h>
40
41#define _COMPONENT	ACPI_RESOURCE_COMPONENT
42ACPI_MODULE_NAME	("vmbus_acpi")
43
44static int	vmbus_acpi_match(device_t, cfdata_t, void *);
45static void	vmbus_acpi_attach(device_t, device_t, void *);
46static int	vmbus_acpi_detach(device_t, int);
47
48struct vmbus_acpi_softc {
49	struct vmbus_softc sc;
50};
51
52CFATTACH_DECL_NEW(vmbus_acpi, sizeof(struct vmbus_acpi_softc),
53    vmbus_acpi_match, vmbus_acpi_attach, vmbus_acpi_detach, NULL);
54
55static const struct device_compatible_entry compat_data[] = {
56	{ .compat = "VMBUS" },
57	{ .compat = "VMBus" },
58	DEVICE_COMPAT_EOL
59};
60
61static int
62vmbus_acpi_match(device_t parent, cfdata_t match, void *opaque)
63{
64	struct acpi_attach_args *aa = opaque;
65	int ret;
66
67	ret = acpi_compatible_match(aa, compat_data);
68
69	if (!vmbus_match(parent, match, opaque))
70		return 0;
71
72	return ret;
73}
74
75static void
76vmbus_acpi_attach(device_t parent, device_t self, void *opaque)
77{
78	struct vmbus_acpi_softc *sc = device_private(self);
79	struct acpi_attach_args *aa = opaque;
80
81	sc->sc.sc_dev = self;
82	sc->sc.sc_iot = aa->aa_iot;
83	sc->sc.sc_memt = aa->aa_memt;
84	sc->sc.sc_dmat = BUS_DMA_TAG_VALID(aa->aa_dmat64) ?
85	    aa->aa_dmat64 : aa->aa_dmat;
86
87	if (vmbus_attach(&sc->sc))
88		return;
89
90	(void)pmf_device_register(self, NULL, NULL);
91}
92
93static int
94vmbus_acpi_detach(device_t self, int flags)
95{
96	struct vmbus_acpi_softc *sc = device_private(self);
97	int rv;
98
99	rv = vmbus_detach(&sc->sc, flags);
100	if (rv)
101		return rv;
102
103	pmf_device_deregister(self);
104
105	return 0;
106}
107