1 | /* $NetBSD: OsdMemory.c,v 1.5 2012/04/22 06:33:04 jruoho 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 1.5 2012/04/22 06:33:04 jruoho 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 | |
54 | MALLOC_DECLARE(M_ACPI); |
55 | |
56 | /* |
57 | * AcpiOsMapMemory: |
58 | * |
59 | * Map physical memory into the caller's address space. |
60 | */ |
61 | void * |
62 | AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length) |
63 | { |
64 | void *LogicalAddress = NULL; |
65 | ACPI_STATUS Status; |
66 | |
67 | if (PhysicalAddress > ULONG_MAX) |
68 | return NULL; |
69 | |
70 | Status = acpi_md_OsMapMemory(PhysicalAddress, Length, &LogicalAddress); |
71 | |
72 | if (ACPI_FAILURE(Status)) |
73 | return NULL; |
74 | |
75 | return LogicalAddress; |
76 | } |
77 | |
78 | /* |
79 | * AcpiOsUnmapMemory: |
80 | * |
81 | * Remove a physical to logical memory mapping. |
82 | */ |
83 | void |
84 | AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length) |
85 | { |
86 | |
87 | acpi_md_OsUnmapMemory(LogicalAddress, Length); |
88 | } |
89 | |
90 | /* |
91 | * AcpiOsGetPhysicalAddress: |
92 | * |
93 | * Translate a logical address to a physical address. |
94 | */ |
95 | ACPI_STATUS |
96 | AcpiOsGetPhysicalAddress(void *LogicalAddress, |
97 | ACPI_PHYSICAL_ADDRESS *PhysicalAddress) |
98 | { |
99 | |
100 | return acpi_md_OsGetPhysicalAddress(LogicalAddress, PhysicalAddress); |
101 | } |
102 | |
103 | /* |
104 | * AcpiOsAllocate: |
105 | * |
106 | * Allocate memory from the dynamic memory pool. |
107 | */ |
108 | void * |
109 | AcpiOsAllocate(ACPI_SIZE Size) |
110 | { |
111 | |
112 | return malloc(Size, M_ACPI, M_NOWAIT); |
113 | } |
114 | |
115 | /* |
116 | * AcpiOsFree: |
117 | * |
118 | * Free previously allocated memory. |
119 | */ |
120 | void |
121 | AcpiOsFree(void *Memory) |
122 | { |
123 | |
124 | free(Memory, M_ACPI); |
125 | } |
126 | |
127 | |
128 | /* |
129 | * AcpiOsReadable: |
130 | * |
131 | * Check if a memory region is readable. |
132 | */ |
133 | BOOLEAN |
134 | AcpiOsReadable(void *Pointer, ACPI_SIZE Length) |
135 | { |
136 | |
137 | return acpi_md_OsReadable(Pointer, Length); |
138 | } |
139 | |
140 | /* |
141 | * AcpiOsWritable: |
142 | * |
143 | * Check if a memory region is writable (and readable). |
144 | */ |
145 | BOOLEAN |
146 | AcpiOsWritable(void *Pointer, ACPI_SIZE Length) |
147 | { |
148 | |
149 | return acpi_md_OsWritable(Pointer, Length); |
150 | } |
151 | |