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 * $FreeBSD: releng/5.4/sys/dev/acpica/Osd/OsdMemory.c 128225 2004-04-14 03:39:08Z njl $
29 */
30
31 /*
32 * 6.2 : Memory Management
33 */
34
35 #include "acpi.h"
36
37 #include <sys/kernel.h>
38 #include <sys/malloc.h>
39 #include <vm/vm.h>
40 #include <vm/pmap.h>
41
42 MALLOC_DEFINE(M_ACPICA, "acpica", "ACPI CA memory pool");
43
44 void *
45 AcpiOsAllocate(ACPI_SIZE Size)
46 {
47 return (malloc(Size, M_ACPICA, M_NOWAIT));
48 }
49
50 void
51 AcpiOsFree(void *Memory)
52 {
53 free(Memory, M_ACPICA);
54 }
55
56 ACPI_STATUS
57 AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length,
58 void **LogicalAddress)
59 {
60 *LogicalAddress = pmap_mapdev((vm_offset_t)PhysicalAddress, Length);
61 if (*LogicalAddress == NULL)
62 return (AE_BAD_ADDRESS);
63 return (AE_OK);
64 }
65
66 void
67 AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length)
68 {
69 pmap_unmapdev((vm_offset_t)LogicalAddress, Length);
70 }
71
72 ACPI_STATUS
73 AcpiOsGetPhysicalAddress(void *LogicalAddress,
74 ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
75 {
76 /* We can't necessarily do this, so cop out. */
77 return (AE_BAD_ADDRESS);
78 }
79
80 /*
81 * There is no clean way to do this. We make the charitable assumption
82 * that callers will not pass garbage to us.
83 */
84 BOOLEAN
85 AcpiOsReadable (void *Pointer, ACPI_SIZE Length)
86 {
87 return (TRUE);
88 }
89
90 BOOLEAN
91 AcpiOsWritable (void *Pointer, ACPI_SIZE Length)
92 {
93 return (TRUE);
94 }
95
96 ACPI_STATUS
97 AcpiOsReadMemory(ACPI_PHYSICAL_ADDRESS Address, UINT32 *Value, UINT32 Width)
98 {
99 void *LogicalAddress;
100
101 if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK)
102 return (AE_NOT_EXIST);
103
104 switch (Width) {
105 case 8:
106 *(u_int8_t *)Value = (*(volatile u_int8_t *)LogicalAddress);
107 break;
108 case 16:
109 *(u_int16_t *)Value = (*(volatile u_int16_t *)LogicalAddress);
110 break;
111 case 32:
112 *(u_int32_t *)Value = (*(volatile u_int32_t *)LogicalAddress);
113 break;
114 case 64:
115 *(u_int64_t *)Value = (*(volatile u_int64_t *)LogicalAddress);
116 break;
117 default:
118 /* debug trap goes here */
119 break;
120 }
121
122 AcpiOsUnmapMemory(LogicalAddress, Width / 8);
123
124 return (AE_OK);
125 }
126
127 ACPI_STATUS
128 AcpiOsWriteMemory(ACPI_PHYSICAL_ADDRESS Address, UINT32 Value, UINT32 Width)
129 {
130 void *LogicalAddress;
131
132 if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK)
133 return (AE_NOT_EXIST);
134
135 switch (Width) {
136 case 8:
137 (*(volatile u_int8_t *)LogicalAddress) = Value & 0xff;
138 break;
139 case 16:
140 (*(volatile u_int16_t *)LogicalAddress) = Value & 0xffff;
141 break;
142 case 32:
143 (*(volatile u_int32_t *)LogicalAddress) = Value & 0xffffffff;
144 break;
145 case 64:
146 (*(volatile u_int64_t *)LogicalAddress) = Value;
147 break;
148 default:
149 /* debug trap goes here */
150 break;
151 }
152
153 AcpiOsUnmapMemory(LogicalAddress, Width / 8);
154
155 return (AE_OK);
156 }
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