1 /*-
2 * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26 #include <sys/cdefs.h>
27 /*
28 * ISA Bridge driver for Generic ISA Bus Devices. See section 10.7 of the
29 * ACPI 2.0a specification for details on this device.
30 */
31
32 #include "opt_acpi.h"
33 #include <sys/param.h>
34 #include <sys/bus.h>
35 #include <sys/kernel.h>
36 #include <sys/malloc.h>
37 #include <sys/module.h>
38
39 #include <contrib/dev/acpica/include/acpi.h>
40 #include <contrib/dev/acpica/include/accommon.h>
41
42 #include <dev/acpica/acpivar.h>
43 #include <isa/isavar.h>
44
45 /* Hooks for the ACPI CA debugging infrastructure. */
46 #define _COMPONENT ACPI_BUS
47 ACPI_MODULE_NAME("ISA_ACPI")
48
49 struct acpi_isab_softc {
50 device_t ap_dev;
51 ACPI_HANDLE ap_handle;
52 };
53
54 static int acpi_isab_probe(device_t bus);
55 static int acpi_isab_attach(device_t bus);
56 static int acpi_isab_read_ivar(device_t dev, device_t child, int which,
57 uintptr_t *result);
58
59 static device_method_t acpi_isab_methods[] = {
60 /* Device interface */
61 DEVMETHOD(device_probe, acpi_isab_probe),
62 DEVMETHOD(device_attach, acpi_isab_attach),
63 DEVMETHOD(device_shutdown, bus_generic_shutdown),
64 DEVMETHOD(device_suspend, bus_generic_suspend),
65 DEVMETHOD(device_resume, bus_generic_resume),
66
67 /* Bus interface */
68 DEVMETHOD(bus_read_ivar, acpi_isab_read_ivar),
69 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
70 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
71 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
72 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
73 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
74 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
75
76 DEVMETHOD_END
77 };
78
79 static driver_t acpi_isab_driver = {
80 "isab",
81 acpi_isab_methods,
82 sizeof(struct acpi_isab_softc),
83 };
84
85 DRIVER_MODULE(acpi_isab, acpi, acpi_isab_driver, 0, 0);
86 MODULE_DEPEND(acpi_isab, acpi, 1, 1, 1);
87
88 static int
acpi_isab_probe(device_t dev)89 acpi_isab_probe(device_t dev)
90 {
91 static char *isa_ids[] = { "PNP0A05", "PNP0A06", NULL };
92 int rv;
93
94 if (acpi_disabled("isab") || device_get_unit(dev) != 0)
95 return (ENXIO);
96 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, isa_ids, NULL);
97 if (rv <= 0)
98 device_set_desc(dev, "ACPI Generic ISA bridge");
99 return (rv);
100 }
101
102 static int
acpi_isab_attach(device_t dev)103 acpi_isab_attach(device_t dev)
104 {
105 struct acpi_isab_softc *sc;
106
107 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
108
109 sc = device_get_softc(dev);
110 sc->ap_dev = dev;
111 sc->ap_handle = acpi_get_handle(dev);
112
113 return (isab_attach(dev));
114 }
115
116 static int
acpi_isab_read_ivar(device_t dev,device_t child,int which,uintptr_t * result)117 acpi_isab_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
118 {
119 struct acpi_isab_softc *sc = device_get_softc(dev);
120
121 switch (which) {
122 case ACPI_IVAR_HANDLE:
123 *result = (uintptr_t)sc->ap_handle;
124 return (0);
125 }
126 return (ENOENT);
127 }
128