OsdMemory.c revision 150003
1238438Sdteske/*- 2238438Sdteske * Copyright (c) 2000 Mitsaru Iwasaki 3278489Sdteske * Copyright (c) 2000 Michael Smith 4252980Sdteske * Copyright (c) 2000 BSDi 5238438Sdteske * All rights reserved. 6238438Sdteske * 7238438Sdteske * Redistribution and use in source and binary forms, with or without 8238438Sdteske * modification, are permitted provided that the following conditions 9238438Sdteske * are met: 10238438Sdteske * 1. Redistributions of source code must retain the above copyright 11238438Sdteske * notice, this list of conditions and the following disclaimer. 12238438Sdteske * 2. Redistributions in binary form must reproduce the above copyright 13238438Sdteske * notice, this list of conditions and the following disclaimer in the 14238438Sdteske * documentation and/or other materials provided with the distribution. 15238438Sdteske * 16252987Sdteske * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17238438Sdteske * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18238438Sdteske * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19238438Sdteske * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20252987Sdteske * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21238438Sdteske * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22238438Sdteske * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23238438Sdteske * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24238438Sdteske * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25238438Sdteske * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26238438Sdteske * SUCH DAMAGE. 27238438Sdteske */ 28278489Sdteske 29278489Sdteske/* 30238438Sdteske * 6.2 : Memory Management 31278489Sdteske */ 32238438Sdteske 33238438Sdteske#include <sys/cdefs.h> 34238438Sdteske__FBSDID("$FreeBSD: head/sys/dev/acpica/Osd/OsdMemory.c 150003 2005-09-11 18:39:03Z obrien $"); 35238438Sdteske 36238438Sdteske#include <contrib/dev/acpica/acpi.h> 37238438Sdteske 38238438Sdteske#include <sys/kernel.h> 39238438Sdteske#include <sys/malloc.h> 40238438Sdteske#include <vm/vm.h> 41238438Sdteske#include <vm/pmap.h> 42238438Sdteske 43238438SdteskeMALLOC_DEFINE(M_ACPICA, "acpica", "ACPI CA memory pool"); 44238438Sdteske 45238438Sdteskevoid * 46238438SdteskeAcpiOsAllocate(ACPI_SIZE Size) 47238438Sdteske{ 48238438Sdteske return (malloc(Size, M_ACPICA, M_NOWAIT)); 49278489Sdteske} 50278489Sdteske 51278489Sdteskevoid 52278489SdteskeAcpiOsFree(void *Memory) 53238438Sdteske{ 54238438Sdteske free(Memory, M_ACPICA); 55278489Sdteske} 56238438Sdteske 57238438SdteskeACPI_STATUS 58238438SdteskeAcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length, 59238438Sdteske void **LogicalAddress) 60238438Sdteske{ 61238438Sdteske *LogicalAddress = pmap_mapdev((vm_offset_t)PhysicalAddress, Length); 62238438Sdteske if (*LogicalAddress == NULL) 63238438Sdteske return (AE_BAD_ADDRESS); 64238438Sdteske return (AE_OK); 65238438Sdteske} 66238438Sdteske 67278489Sdteskevoid 68238438SdteskeAcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length) 69278489Sdteske{ 70278489Sdteske pmap_unmapdev((vm_offset_t)LogicalAddress, Length); 71278489Sdteske} 72278489Sdteske 73278489SdteskeACPI_STATUS 74278489SdteskeAcpiOsGetPhysicalAddress(void *LogicalAddress, 75278489Sdteske ACPI_PHYSICAL_ADDRESS *PhysicalAddress) 76278489Sdteske{ 77278489Sdteske /* We can't necessarily do this, so cop out. */ 78278489Sdteske return (AE_BAD_ADDRESS); 79278489Sdteske} 80278489Sdteske 81278489Sdteske/* 82238438Sdteske * There is no clean way to do this. We make the charitable assumption 83238438Sdteske * that callers will not pass garbage to us. 84238438Sdteske */ 85278489SdteskeBOOLEAN 86278489SdteskeAcpiOsReadable (void *Pointer, ACPI_SIZE Length) 87238438Sdteske{ 88278489Sdteske return (TRUE); 89278489Sdteske} 90278489Sdteske 91278489SdteskeBOOLEAN 92238438SdteskeAcpiOsWritable (void *Pointer, ACPI_SIZE Length) 93238438Sdteske{ 94238438Sdteske return (TRUE); 95238438Sdteske} 96278489Sdteske 97278489SdteskeACPI_STATUS 98278489SdteskeAcpiOsReadMemory(ACPI_PHYSICAL_ADDRESS Address, UINT32 *Value, UINT32 Width) 99238438Sdteske{ 100238438Sdteske void *LogicalAddress; 101278489Sdteske 102278489Sdteske if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK) 103244675Sdteske return (AE_NOT_EXIST); 104244675Sdteske 105238438Sdteske switch (Width) { 106 case 8: 107 *(u_int8_t *)Value = (*(volatile u_int8_t *)LogicalAddress); 108 break; 109 case 16: 110 *(u_int16_t *)Value = (*(volatile u_int16_t *)LogicalAddress); 111 break; 112 case 32: 113 *(u_int32_t *)Value = (*(volatile u_int32_t *)LogicalAddress); 114 break; 115 case 64: 116 *(u_int64_t *)Value = (*(volatile u_int64_t *)LogicalAddress); 117 break; 118 default: 119 /* debug trap goes here */ 120 break; 121 } 122 123 AcpiOsUnmapMemory(LogicalAddress, Width / 8); 124 125 return (AE_OK); 126} 127 128ACPI_STATUS 129AcpiOsWriteMemory(ACPI_PHYSICAL_ADDRESS Address, UINT32 Value, UINT32 Width) 130{ 131 void *LogicalAddress; 132 133 if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK) 134 return (AE_NOT_EXIST); 135 136 switch (Width) { 137 case 8: 138 (*(volatile u_int8_t *)LogicalAddress) = Value & 0xff; 139 break; 140 case 16: 141 (*(volatile u_int16_t *)LogicalAddress) = Value & 0xffff; 142 break; 143 case 32: 144 (*(volatile u_int32_t *)LogicalAddress) = Value & 0xffffffff; 145 break; 146 case 64: 147 (*(volatile u_int64_t *)LogicalAddress) = Value; 148 break; 149 default: 150 /* debug trap goes here */ 151 break; 152 } 153 154 AcpiOsUnmapMemory(LogicalAddress, Width / 8); 155 156 return (AE_OK); 157} 158