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
54 static int bcmmbox_acpi_match(device_t, cfdata_t, void *);
55 static void bcmmbox_acpi_attach(device_t, device_t, void *);
56
57 CFATTACH_DECL_NEW(bcmmbox_acpi, sizeof(struct bcm2835mbox_softc),
58 bcmmbox_acpi_match, bcmmbox_acpi_attach, NULL, NULL);
59
60 static int
bcmmbox_acpi_match(device_t parent,cfdata_t match,void * aux)61 bcmmbox_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
75 static void
bcmmbox_acpi_attach(device_t parent,device_t self,void * aux)76 bcmmbox_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