OsdMemory.c revision 67760 
1/*-
2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2000 BSDi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *	$FreeBSD: head/sys/dev/acpica/Osd/OsdMemory.c 67760 2000-10-28 06:56:15Z msmith $
28 */
29
30/*
31 * 6.2 : Memory Management
32 */
33
34#include "acpi.h"
35
36#include <sys/kernel.h>
37#include <sys/malloc.h>
38#include <vm/vm.h>
39#include <vm/pmap.h>
40
41MALLOC_DEFINE(M_ACPICA, "acpica", "ACPI CA memory pool");
42
43void *
44AcpiOsAllocate(UINT32 Size)
45{
46    return(malloc(Size, M_ACPICA, M_NOWAIT));
47}
48
49void *
50AcpiOsCallocate (UINT32 Size)
51{
52    void	*alloc;
53
54    alloc = malloc(Size, M_ACPICA, M_NOWAIT);
55    if (alloc != NULL)
56	bzero(alloc, Size);
57    return(alloc);
58}
59
60void
61AcpiOsFree (void *Memory)
62{
63    free(Memory, M_ACPICA);
64}
65
66ACPI_STATUS
67AcpiOsMapMemory (void *PhysicalAddress, UINT32 Length, void **LogicalAddress)
68{
69    *LogicalAddress = pmap_mapdev((vm_offset_t)PhysicalAddress, Length);
70    if (*LogicalAddress == NULL)
71	return(AE_BAD_ADDRESS);
72    return(AE_OK);
73}
74
75void
76AcpiOsUnmapMemory (void *LogicalAddress, UINT32 Length)
77{
78    pmap_unmapdev((vm_offset_t)LogicalAddress, Length);
79}
80
81/*
82 * There is no clean way to do this.  We make the charitable assumption
83 * that callers will not pass garbage to us.
84 */
85BOOLEAN
86AcpiOsReadable (void *Pointer, UINT32 Length)
87{
88    return(TRUE);
89}
90
91BOOLEAN
92AcpiOsWritable (void *Pointer, UINT32 Length)
93{
94    return(TRUE);
95}
96
97