1 /*-
2 * Copyright (c) 2003 Nate Lawson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/11.2/sys/dev/acpica/acpi_package.c 315020 2017-03-10 19:33:37Z vangyzen $");
29
30 #include <sys/param.h>
31 #include <sys/kernel.h>
32 #include <sys/bus.h>
33 #include <sys/sbuf.h>
34
35 #include <machine/bus.h>
36 #include <machine/resource.h>
37 #include <sys/rman.h>
38
39 #include <contrib/dev/acpica/include/acpi.h>
40
41 #include <dev/acpica/acpivar.h>
42
43 /*
44 * Package manipulation convenience functions
45 */
46
47 int
48 acpi_PkgInt(ACPI_OBJECT *res, int idx, UINT64 *dst)
49 {
50 ACPI_OBJECT *obj;
51
52 obj = &res->Package.Elements[idx];
53 if (obj->Type != ACPI_TYPE_INTEGER)
54 return (EINVAL);
55 *dst = obj->Integer.Value;
56
57 return (0);
58 }
59
60 int
61 acpi_PkgInt32(ACPI_OBJECT *res, int idx, uint32_t *dst)
62 {
63 UINT64 tmp;
64 int error;
65
66 error = acpi_PkgInt(res, idx, &tmp);
67 if (error == 0)
68 *dst = (uint32_t)tmp;
69
70 return (error);
71 }
72
73 int
74 acpi_PkgStr(ACPI_OBJECT *res, int idx, void *dst, size_t size)
75 {
76 ACPI_OBJECT *obj;
77 void *ptr;
78 size_t length;
79
80 obj = &res->Package.Elements[idx];
81 if (obj == NULL)
82 return (EINVAL);
83
84 switch (obj->Type) {
85 case ACPI_TYPE_STRING:
86 ptr = obj->String.Pointer;
87 length = obj->String.Length;
88 break;
89 case ACPI_TYPE_BUFFER:
90 ptr = obj->Buffer.Pointer;
91 length = obj->Buffer.Length;
92 break;
93 default:
94 return (EINVAL);
95 }
96
97 /* Make sure string will fit, including terminating NUL */
98 if (++length > size)
99 return (E2BIG);
100
101 strlcpy(dst, ptr, length);
102 return (0);
103 }
104
105 int
106 acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *type, int *rid,
107 struct resource **dst, u_int flags)
108 {
109 ACPI_GENERIC_ADDRESS gas;
110 ACPI_OBJECT *obj;
111
112 obj = &res->Package.Elements[idx];
113 if (obj == NULL || obj->Type != ACPI_TYPE_BUFFER ||
114 obj->Buffer.Length < sizeof(ACPI_GENERIC_ADDRESS) + 3)
115 return (EINVAL);
116
117 memcpy(&gas, obj->Buffer.Pointer + 3, sizeof(gas));
118
119 return (acpi_bus_alloc_gas(dev, type, rid, &gas, dst, flags));
120 }
121
122 int
123 acpi_PkgFFH_IntelCpu(ACPI_OBJECT *res, int idx, int *vendor, int *class,
124 uint64_t *address, int *accsize)
125 {
126 ACPI_GENERIC_ADDRESS gas;
127 ACPI_OBJECT *obj;
128
129 obj = &res->Package.Elements[idx];
130 if (obj == NULL || obj->Type != ACPI_TYPE_BUFFER ||
131 obj->Buffer.Length < sizeof(ACPI_GENERIC_ADDRESS) + 3)
132 return (EINVAL);
133
134 memcpy(&gas, obj->Buffer.Pointer + 3, sizeof(gas));
135 if (gas.SpaceId != ACPI_ADR_SPACE_FIXED_HARDWARE)
136 return (ERESTART);
137 *vendor = gas.BitWidth;
138 *class = gas.BitOffset;
139 *address = gas.Address;
140 *accsize = gas.AccessWidth;
141 return (0);
142 }
143
144 ACPI_HANDLE
145 acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj)
146 {
147 ACPI_HANDLE h;
148
149 if (obj == NULL)
150 return (NULL);
151
152 switch (obj->Type) {
153 case ACPI_TYPE_LOCAL_REFERENCE:
154 case ACPI_TYPE_ANY:
155 h = obj->Reference.Handle;
156 break;
157 case ACPI_TYPE_STRING:
158 /*
159 * The String object usually contains a fully-qualified path, so
160 * scope can be NULL.
161 *
162 * XXX This may not always be the case.
163 */
164 if (ACPI_FAILURE(AcpiGetHandle(scope, obj->String.Pointer, &h)))
165 h = NULL;
166 break;
167 default:
168 h = NULL;
169 break;
170 }
171
172 return (h);
173 }
Cache object: 20f9889efe8e5047b6c4174bc4f89c2f
|