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("$FreeBSD$");
35
36 #include <contrib/dev/acpica/acpi.h>
37
38 #include <sys/kernel.h>
39 #include <sys/malloc.h>
40 #include <vm/vm.h>
41 #include <vm/pmap.h>
42
43 MALLOC_DEFINE(M_ACPICA, "acpica", "ACPI CA memory pool");
44
45 void *
46 AcpiOsAllocate(ACPI_SIZE Size)
47 {
48 return (malloc(Size, M_ACPICA, M_NOWAIT));
49 }
50
51 void
52 AcpiOsFree(void *Memory)
53 {
54 free(Memory, M_ACPICA);
55 }
56
57 void *
58 AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_NATIVE_UINT Length)
59 {
60 return (pmap_mapbios((vm_offset_t)PhysicalAddress, Length));
61 }
62
63 void
64 AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length)
65 {
66 pmap_unmapbios((vm_offset_t)LogicalAddress, Length);
67 }
68
69 ACPI_STATUS
70 AcpiOsGetPhysicalAddress(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
77 ACPI_STATUS
78 AcpiOsValidateInterface (char *Interface)
79 {
80 return (AE_SUPPORT);
81 }
82
83 /*
84 * There is no clean way to do this. We make the charitable assumption
85 * that callers will not pass garbage to us.
86 */
87 ACPI_STATUS
88 AcpiOsValidateAddress (UINT8 SpaceId, ACPI_PHYSICAL_ADDRESS Address,
89 ACPI_SIZE Length)
90 {
91 return (AE_OK);
92 }
93
94 BOOLEAN
95 AcpiOsReadable (void *Pointer, ACPI_SIZE Length)
96 {
97 return (TRUE);
98 }
99
100 BOOLEAN
101 AcpiOsWritable (void *Pointer, ACPI_SIZE Length)
102 {
103 return (TRUE);
104 }
105
106 ACPI_STATUS
107 AcpiOsReadMemory(ACPI_PHYSICAL_ADDRESS Address, UINT32 *Value, UINT32 Width)
108 {
109 void *LogicalAddress;
110
111 LogicalAddress = AcpiOsMapMemory(Address, Width / 8);
112 if (LogicalAddress == NULL)
113 return (AE_NOT_EXIST);
114
115 switch (Width) {
116 case 8:
117 *(u_int8_t *)Value = (*(volatile u_int8_t *)LogicalAddress);
118 break;
119 case 16:
120 *(u_int16_t *)Value = (*(volatile u_int16_t *)LogicalAddress);
121 break;
122 case 32:
123 *(u_int32_t *)Value = (*(volatile u_int32_t *)LogicalAddress);
124 break;
125 case 64:
126 *(u_int64_t *)Value = (*(volatile u_int64_t *)LogicalAddress);
127 break;
128 default:
129 /* debug trap goes here */
130 break;
131 }
132
133 AcpiOsUnmapMemory(LogicalAddress, Width / 8);
134
135 return (AE_OK);
136 }
137
138 ACPI_STATUS
139 AcpiOsWriteMemory(ACPI_PHYSICAL_ADDRESS Address, UINT32 Value, UINT32 Width)
140 {
141 void *LogicalAddress;
142
143 LogicalAddress = AcpiOsMapMemory(Address, Width / 8);
144 if (LogicalAddress == NULL)
145 return (AE_NOT_EXIST);
146
147 switch (Width) {
148 case 8:
149 (*(volatile u_int8_t *)LogicalAddress) = Value & 0xff;
150 break;
151 case 16:
152 (*(volatile u_int16_t *)LogicalAddress) = Value & 0xffff;
153 break;
154 case 32:
155 (*(volatile u_int32_t *)LogicalAddress) = Value & 0xffffffff;
156 break;
157 case 64:
158 (*(volatile u_int64_t *)LogicalAddress) = Value;
159 break;
160 default:
161 /* debug trap goes here */
162 break;
163 }
164
165 AcpiOsUnmapMemory(LogicalAddress, Width / 8);
166
167 return (AE_OK);
168 }
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