2 * Copyright (c) 2000 Mitsaru Iwasaki
3 * Copyright (c) 2000 Michael Smith
4 * Copyright (c) 2000 BSDi
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
28 * $FreeBSD: src/sys/dev/acpica/Osd/OsdMemory.c,v 1.10.2.1 2003/08/22 20:49:21 jhb Exp $
29 * $DragonFly: src/sys/dev/acpica/Osd/Attic/OsdMemory.c,v 1.2 2004/05/05 22:18:09 dillon Exp $
33 * 6.2 : Memory Management
38 #include <sys/kernel.h>
39 #include <sys/malloc.h>
43 static MALLOC_DEFINE(M_ACPICA, "acpica", "ACPI CA memory pool");
45 struct acpi_memtrack {
46 struct acpi_memtrack *next;
51 typedef struct acpi_memtrack *acpi_memtrack_t;
53 static acpi_memtrack_t acpi_mapbase;
56 AcpiOsAllocate(ACPI_SIZE Size)
58 return(malloc(Size, M_ACPICA, M_INTWAIT));
62 AcpiOsFree (void *Memory)
64 free(Memory, M_ACPICA);
68 AcpiOsMapMemory (ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length, void **LogicalAddress)
70 acpi_memtrack_t track;
72 *LogicalAddress = pmap_mapdev((vm_offset_t)PhysicalAddress, Length);
73 if (*LogicalAddress == NULL) {
74 return(AE_BAD_ADDRESS);
76 track = malloc(sizeof(struct acpi_memtrack), M_ACPICA, M_INTWAIT);
77 track->next = acpi_mapbase;
78 track->base = *LogicalAddress;
86 AcpiOsUnmapMemory (void *LogicalAddress, ACPI_SIZE Length)
88 struct acpi_memtrack **ptrack;
89 acpi_memtrack_t track;
92 for (ptrack = &acpi_mapbase; (track = *ptrack); ptrack = &track->next) {
94 * Exact match, degenerate case
96 if (track->base == LogicalAddress && track->size == Length) {
97 *ptrack = track->next;
98 pmap_unmapdev((vm_offset_t)track->base, track->size);
99 free(track, M_ACPICA);
105 if ((char *)LogicalAddress <= (char *)track->base &&
106 (char *)LogicalAddress + Length >= (char *)track->base + track->size
108 *ptrack = track->next;
109 pmap_unmapdev((vm_offset_t)track->base, track->size);
110 printf("AcpiOsUnmapMemory: Warning, deallocation request too"
111 " large! %p/%08x (actual was %p/%08x)\n",
112 LogicalAddress, Length,
113 track->base, track->size);
114 free(track, M_ACPICA);
121 if ((char *)LogicalAddress + Length >= (char *)track->base &&
122 (char *)LogicalAddress < (char *)track->base + track->size
124 printf("AcpiOsUnmapMemory: Warning, deallocation did not "
125 "track allocation: %p/%08x (actual was %p/%08x)\n",
126 LogicalAddress, Length,
127 track->base, track->size);
130 printf("AcpiOsUnmapMemory: Warning, broken ACPI, bad unmap: %p/%08x\n",
131 LogicalAddress, Length);
135 AcpiOsGetPhysicalAddress(void *LogicalAddress, ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
137 /* we can't necessarily do this, so cop out */
138 return(AE_BAD_ADDRESS);
142 * There is no clean way to do this. We make the charitable assumption
143 * that callers will not pass garbage to us.
146 AcpiOsReadable (void *Pointer, UINT32 Length)
152 AcpiOsWritable (void *Pointer, UINT32 Length)
159 ACPI_PHYSICAL_ADDRESS Address,
163 void *LogicalAddress;
165 if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK) {
166 return(AE_NOT_EXIST);
171 *(u_int8_t *)Value = (*(volatile u_int8_t *)LogicalAddress);
174 *(u_int16_t *)Value = (*(volatile u_int16_t *)LogicalAddress);
177 *(u_int32_t *)Value = (*(volatile u_int32_t *)LogicalAddress);
180 *(u_int64_t *)Value = (*(volatile u_int64_t *)LogicalAddress);
183 /* debug trap goes here */
187 AcpiOsUnmapMemory(LogicalAddress, Width / 8);
194 ACPI_PHYSICAL_ADDRESS Address,
198 void *LogicalAddress;
200 if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK) {
201 return(AE_NOT_EXIST);
206 (*(volatile u_int8_t *)LogicalAddress) = Value & 0xff;
209 (*(volatile u_int16_t *)LogicalAddress) = Value & 0xffff;
212 (*(volatile u_int32_t *)LogicalAddress) = Value & 0xffffffff;
215 (*(volatile u_int64_t *)LogicalAddress) = Value;
218 /* debug trap goes here */
222 AcpiOsUnmapMemory(LogicalAddress, Width / 8);