OsdMemory.c revision 210155 
1/*-
2 * Copyright (c) 2000 Mitsaru Iwasaki
3 * Copyright (c) 2000 Michael Smith
4 * Copyright (c) 2000 BSDi
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29/*
30 * 6.2 : Memory Management
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: head/sys/dev/acpica/Osd/OsdMemory.c 210155 2010-07-16 03:59:50Z jkim $");
35
36#include <contrib/dev/acpica/include/acpi.h>
37
38#include <sys/kernel.h>
39#include <sys/malloc.h>
40#include <vm/vm.h>
41#include <vm/pmap.h>
42
43MALLOC_DEFINE(M_ACPICA, "acpica", "ACPI CA memory pool");
44
45void *
46AcpiOsAllocate(ACPI_SIZE Size)
47{
48    return (malloc(Size, M_ACPICA, M_NOWAIT));
49}
50
51void
52AcpiOsFree(void *Memory)
53{
54    free(Memory, M_ACPICA);
55}
56
57void *
58AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length)
59{
60    return (pmap_mapbios((vm_offset_t)PhysicalAddress, Length));
61}
62
63void
64AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length)
65{
66    pmap_unmapbios((vm_offset_t)LogicalAddress, Length);
67}
68
69ACPI_STATUS
70AcpiOsGetPhysicalAddress(void *LogicalAddress,
71    ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
72{
73    /* We can't necessarily do this, so cop out. */
74    return (AE_BAD_ADDRESS);
75}
76
77ACPI_STATUS
78AcpiOsValidateInterface (char *Interface)
79{
80    return (AE_SUPPORT);
81}
82
83BOOLEAN
84AcpiOsReadable (void *Pointer, ACPI_SIZE Length)
85{
86    return (TRUE);
87}
88
89BOOLEAN
90AcpiOsWritable (void *Pointer, ACPI_SIZE Length)
91{
92    return (TRUE);
93}
94
95ACPI_STATUS
96AcpiOsReadMemory(ACPI_PHYSICAL_ADDRESS Address, UINT32 *Value, UINT32 Width)
97{
98    void	*LogicalAddress;
99
100    LogicalAddress = pmap_mapdev(Address, Width / 8);
101    if (LogicalAddress == NULL)
102	return (AE_NOT_EXIST);
103
104    switch (Width) {
105    case 8:
106	*Value = *(volatile uint8_t *)LogicalAddress;
107	break;
108    case 16:
109	*Value = *(volatile uint16_t *)LogicalAddress;
110	break;
111    case 32:
112	*Value = *(volatile uint32_t *)LogicalAddress;
113	break;
114    }
115
116    pmap_unmapdev((vm_offset_t)LogicalAddress, Width / 8);
117
118    return (AE_OK);
119}
120
121ACPI_STATUS
122AcpiOsWriteMemory(ACPI_PHYSICAL_ADDRESS Address, UINT32 Value, UINT32 Width)
123{
124    void	*LogicalAddress;
125
126    LogicalAddress = pmap_mapdev(Address, Width / 8);
127    if (LogicalAddress == NULL)
128	return (AE_NOT_EXIST);
129
130    switch (Width) {
131    case 8:
132	*(volatile uint8_t *)LogicalAddress = Value;
133	break;
134    case 16:
135	*(volatile uint16_t *)LogicalAddress = Value;
136	break;
137    case 32:
138	*(volatile uint32_t *)LogicalAddress = Value;
139	break;
140    }
141
142    pmap_unmapdev((vm_offset_t)LogicalAddress, Width / 8);
143
144    return (AE_OK);
145}
146