1/*	$NetBSD: bcm2835_mbox_acpi.c,v 1.2 2020/02/22 22:09:07 jmcneill Exp $	*/
2
3/*-
4 * Copyright (c) 2012 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Nick Hudson
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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: bcm2835_mbox_acpi.c,v 1.2 2020/02/22 22:09:07 jmcneill Exp $");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/device.h>
38#include <sys/kernel.h>
39#include <sys/timetc.h>
40#include <sys/bus.h>
41#include <sys/mutex.h>
42
43#include <arm/broadcom/bcm2835_mbox.h>
44#include <arm/broadcom/bcm2835_mboxreg.h>
45#include <arm/broadcom/bcm2835reg.h>
46#include <arm/broadcom/bcm2835var.h>
47
48#include <dev/acpi/acpivar.h>
49#include <dev/acpi/acpi_intr.h>
50#include <arch/evbarm/rpi/vcprop.h>
51#include <arch/evbarm/rpi/vcio.h>
52#include <arch/evbarm/rpi/vcpm.h>
53
54static int bcmmbox_acpi_match(device_t, cfdata_t, void *);
55static void bcmmbox_acpi_attach(device_t, device_t, void *);
56
57CFATTACH_DECL_NEW(bcmmbox_acpi, sizeof(struct bcm2835mbox_softc),
58    bcmmbox_acpi_match, bcmmbox_acpi_attach, NULL, NULL);
59
60static int
61bcmmbox_acpi_match(device_t parent, cfdata_t match, void *aux)
62{
63	const char * const acpi_compatible[] = {
64		"BCM2849",
65		NULL
66	};
67	struct acpi_attach_args * const aa = aux;
68
69	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
70		return 0;
71
72	return acpi_match_hid(aa->aa_node->ad_devinfo, acpi_compatible);
73}
74
75static void
76bcmmbox_acpi_attach(device_t parent, device_t self, void *aux)
77{
78	struct bcm2835mbox_softc *sc = device_private(self);
79	struct acpi_attach_args * const aa = aux;
80	struct acpi_resources res;
81	struct acpi_mem *mem;
82	struct acpi_irq *irq;
83	ACPI_STATUS rv;
84
85	rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
86	    &res, &acpi_resource_parse_ops_default);
87	if (ACPI_FAILURE(rv))
88		return;
89
90	mem = acpi_res_mem(&res, 0);
91	irq = acpi_res_irq(&res, 0);
92	if (mem == NULL || irq == NULL) {
93		aprint_error_dev(self, "couldn't find resources\n");
94		return;
95	}
96
97	sc->sc_dev = self;
98	sc->sc_iot = aa->aa_memt;
99	sc->sc_dmat = aa->aa_dmat;
100
101	if (bus_space_map(sc->sc_iot, mem->ar_base, mem->ar_length, 0, &sc->sc_ioh) != 0) {
102		aprint_error_dev(sc->sc_dev, "unable to map device\n");
103		return;
104	}
105
106#if notyet
107	sc->sc_intrh = acpi_intr_establish(self, (uint64_t)aa->aa_node->ad_handle,
108	    IPL_VM, false, bcmmbox_intr, sc, device_xname(self));
109	if (sc->sc_intrh == NULL) {
110		aprint_error_dev(self, "failed to establish interrupt\n");
111		return;
112	}
113#endif
114
115	bcmmbox_attach(sc);
116}
117