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 *
AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress,ACPI_SIZE Length)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
AcpiOsUnmapMemory(void * LogicalAddress,ACPI_SIZE Length)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
AcpiOsGetPhysicalAddress(void * LogicalAddress,ACPI_PHYSICAL_ADDRESS * PhysicalAddress)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 *
AcpiOsAllocate(ACPI_SIZE Size)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
AcpiOsFree(void * Memory)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
AcpiOsReadable(void * Pointer,ACPI_SIZE Length)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
AcpiOsWritable(void * Pointer,ACPI_SIZE Length)146 AcpiOsWritable(void *Pointer, ACPI_SIZE Length)
147 {
148
149 return acpi_md_OsWritable(Pointer, Length);
150 }
151