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/param.h>
28#include <sys/kernel.h>
29#include <sys/bus.h>
30#include <sys/sbuf.h>
31
32#include <machine/bus.h>
33#include <machine/resource.h>
34#include <sys/rman.h>
35
36#include <contrib/dev/acpica/include/acpi.h>
37
38#include <dev/acpica/acpivar.h>
39
40/*
41 * Package manipulation convenience functions
42 */
43
44int
45acpi_PkgInt(ACPI_OBJECT *res, int idx, UINT64 *dst)
46{
47    ACPI_OBJECT		*obj;
48
49    obj = &res->Package.Elements[idx];
50    if (obj->Type != ACPI_TYPE_INTEGER)
51	return (EINVAL);
52    *dst = obj->Integer.Value;
53
54    return (0);
55}
56
57int
58acpi_PkgInt32(ACPI_OBJECT *res, int idx, uint32_t *dst)
59{
60    UINT64		tmp;
61    int			error;
62
63    error = acpi_PkgInt(res, idx, &tmp);
64    if (error == 0)
65	*dst = (uint32_t)tmp;
66
67    return (error);
68}
69
70int
71acpi_PkgInt16(ACPI_OBJECT *res, int idx, uint16_t *dst)
72{
73    UINT64		tmp;
74    int			error;
75
76    error = acpi_PkgInt(res, idx, &tmp);
77    if (error == 0)
78	*dst = (uint16_t)tmp;
79
80    return (error);
81}
82
83int
84acpi_PkgStr(ACPI_OBJECT *res, int idx, void *dst, size_t size)
85{
86    ACPI_OBJECT		*obj;
87    void		*ptr;
88    size_t		 length;
89
90    obj = &res->Package.Elements[idx];
91    if (obj == NULL)
92	return (EINVAL);
93
94    switch (obj->Type) {
95    case ACPI_TYPE_STRING:
96	ptr = obj->String.Pointer;
97	length = obj->String.Length;
98	break;
99    case ACPI_TYPE_BUFFER:
100	ptr = obj->Buffer.Pointer;
101	length = obj->Buffer.Length;
102	break;
103    default:
104	return (EINVAL);
105    }
106
107    /* Make sure string will fit, including terminating NUL */
108    if (++length > size)
109	return (E2BIG);
110
111    strlcpy(dst, ptr, length);
112    return (0);
113}
114
115int
116acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *type, int *rid,
117    struct resource **dst, u_int flags)
118{
119    ACPI_GENERIC_ADDRESS gas;
120    ACPI_OBJECT *obj;
121
122    obj = &res->Package.Elements[idx];
123    if (obj == NULL || obj->Type != ACPI_TYPE_BUFFER ||
124	obj->Buffer.Length < sizeof(ACPI_GENERIC_ADDRESS) + 3)
125	return (EINVAL);
126
127    memcpy(&gas, obj->Buffer.Pointer + 3, sizeof(gas));
128
129    return (acpi_bus_alloc_gas(dev, type, rid, &gas, dst, flags));
130}
131
132int
133acpi_PkgFFH_IntelCpu(ACPI_OBJECT *res, int idx, int *vendor, int *class,
134    uint64_t *address, int *accsize)
135{
136    ACPI_GENERIC_ADDRESS gas;
137    ACPI_OBJECT *obj;
138
139    obj = &res->Package.Elements[idx];
140    if (obj == NULL || obj->Type != ACPI_TYPE_BUFFER ||
141	obj->Buffer.Length < sizeof(ACPI_GENERIC_ADDRESS) + 3)
142	return (EINVAL);
143
144    memcpy(&gas, obj->Buffer.Pointer + 3, sizeof(gas));
145    if (gas.SpaceId != ACPI_ADR_SPACE_FIXED_HARDWARE)
146	return (ERESTART);
147    *vendor = gas.BitWidth;
148    *class = gas.BitOffset;
149    *address = gas.Address;
150    *accsize = gas.AccessWidth;
151    return (0);
152}
153
154ACPI_HANDLE
155acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj)
156{
157    ACPI_HANDLE h;
158
159    if (obj == NULL)
160	return (NULL);
161
162    switch (obj->Type) {
163    case ACPI_TYPE_LOCAL_REFERENCE:
164    case ACPI_TYPE_ANY:
165	h = obj->Reference.Handle;
166	break;
167    case ACPI_TYPE_STRING:
168	/*
169	 * The String object usually contains a fully-qualified path, so
170	 * scope can be NULL.
171	 *
172	 * XXX This may not always be the case.
173	 */
174	if (ACPI_FAILURE(AcpiGetHandle(scope, obj->String.Pointer, &h)))
175	    h = NULL;
176	break;
177    default:
178	h = NULL;
179	break;
180    }
181
182    return (h);
183}
184