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