1/*	$NetBSD: OsdMemory.c,v 1.3 2009/08/18 16:41:02 jmcneill Exp $	*/
2
3/*
4 * Copyright 2001 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed for the NetBSD Project by
20 *	Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38/*
39 * OS Services Layer
40 *
41 * 6.2: Memory management.
42 */
43
44#include <sys/cdefs.h>
45__KERNEL_RCSID(0, "$NetBSD: OsdMemory.c,v 1.3 2009/08/18 16:41:02 jmcneill Exp $");
46
47#include <sys/param.h>
48#include <sys/malloc.h>
49
50#include <dev/acpi/acpica.h>
51
52#include <machine/acpi_machdep.h>
53
54MALLOC_DECLARE(M_ACPI);
55
56/*
57 * AcpiOsMapMemory:
58 *
59 *	Map physical memory into the caller's address space.
60 */
61void *
62AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length)
63{
64	ACPI_STATUS Status;
65	void *LogicalAddress = NULL;
66
67	Status = acpi_md_OsMapMemory(PhysicalAddress, Length, &LogicalAddress);
68	if (ACPI_FAILURE (Status))
69		return NULL;
70	return LogicalAddress;
71}
72
73/*
74 * AcpiOsUnmapMemory:
75 *
76 *	Remove a physical to logical memory mapping.
77 */
78void
79AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length)
80{
81
82	acpi_md_OsUnmapMemory(LogicalAddress, Length);
83}
84
85/*
86 * AcpiOsGetPhysicalAddress:
87 *
88 *	Translate a logical address to a physical address.
89 */
90ACPI_STATUS
91AcpiOsGetPhysicalAddress(void *LogicalAddress,
92    ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
93{
94
95	return acpi_md_OsGetPhysicalAddress(LogicalAddress, PhysicalAddress);
96}
97
98/*
99 * AcpiOsAllocate:
100 *
101 *	Allocate memory from the dynamic memory pool.
102 */
103void *
104AcpiOsAllocate(ACPI_SIZE Size)
105{
106
107	return malloc(Size, M_ACPI, M_NOWAIT);
108}
109
110/*
111 * AcpiOsFree:
112 *
113 *	Free previously allocated memory.
114 */
115void
116AcpiOsFree(void *Memory)
117{
118
119	free(Memory, M_ACPI);
120}
121
122
123/*
124 * AcpiOsReadable:
125 *
126 *	Check if a memory region is readable.
127 */
128BOOLEAN
129AcpiOsReadable(void *Pointer, ACPI_SIZE Length)
130{
131
132	return acpi_md_OsReadable(Pointer, Length);
133}
134
135/*
136 * AcpiOsWritable:
137 *
138 *	Check if a memory region is writable (and readable).
139 */
140BOOLEAN
141AcpiOsWritable(void *Pointer, ACPI_SIZE Length)
142{
143
144	return acpi_md_OsWritable(Pointer, Length);
145}
146