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 * $FreeBSD$ 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 static MALLOC_DEFINE(M_ACPICA, "acpica", "ACPI CA memory pool"); 43 44 void * 45 AcpiOsAllocate(UINT32 Size) 46 { 47 return(malloc(Size, M_ACPICA, M_NOWAIT)); 48 } 49 50 void * 51 AcpiOsCallocate (UINT32 Size) 52 { 53 void *alloc; 54 55 alloc = malloc(Size, M_ACPICA, M_NOWAIT); 56 if (alloc != NULL) 57 bzero(alloc, Size); 58 return(alloc); 59 } 60 61 void 62 AcpiOsFree (void *Memory) 63 { 64 free(Memory, M_ACPICA); 65 } 66 67 ACPI_STATUS 68 AcpiOsMapMemory (ACPI_PHYSICAL_ADDRESS PhysicalAddress, UINT32 Length, void **LogicalAddress) 69 { 70 *LogicalAddress = pmap_mapdev((vm_offset_t)PhysicalAddress, Length); 71 if (*LogicalAddress == NULL) 72 return(AE_BAD_ADDRESS); 73 return(AE_OK); 74 } 75 76 void 77 AcpiOsUnmapMemory (void *LogicalAddress, UINT32 Length) 78 { 79 pmap_unmapdev((vm_offset_t)LogicalAddress, Length); 80 } 81 82 ACPI_STATUS 83 AcpiOsGetPhysicalAddress(void *LogicalAddress, ACPI_PHYSICAL_ADDRESS *PhysicalAddress) 84 { 85 /* we can't necessarily do this, so cop out */ 86 return(AE_BAD_ADDRESS); 87 } 88 89 /* 90 * There is no clean way to do this. We make the charitable assumption 91 * that callers will not pass garbage to us. 92 */ 93 BOOLEAN 94 AcpiOsReadable (void *Pointer, UINT32 Length) 95 { 96 return(TRUE); 97 } 98 99 BOOLEAN 100 AcpiOsWritable (void *Pointer, UINT32 Length) 101 { 102 return(TRUE); 103 } 104 105 ACPI_STATUS 106 AcpiOsReadMemory ( 107 ACPI_PHYSICAL_ADDRESS Address, 108 void *Value, 109 UINT32 Width) 110 { 111 void *LogicalAddress; 112 113 if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK) { 114 return(AE_NOT_EXIST); 115 } 116 117 switch (Width) { 118 case 8: 119 *(u_int8_t *)Value = (*(volatile u_int8_t *)LogicalAddress); 120 break; 121 case 16: 122 *(u_int16_t *)Value = (*(volatile u_int16_t *)LogicalAddress); 123 break; 124 case 32: 125 *(u_int32_t *)Value = (*(volatile u_int32_t *)LogicalAddress); 126 break; 127 case 64: 128 *(u_int64_t *)Value = (*(volatile u_int64_t *)LogicalAddress); 129 break; 130 default: 131 /* debug trap goes here */ 132 } 133 134 AcpiOsUnmapMemory(LogicalAddress, Width / 8); 135 136 return(AE_OK); 137 } 138 139 ACPI_STATUS 140 AcpiOsWriteMemory ( 141 ACPI_PHYSICAL_ADDRESS Address, 142 ACPI_INTEGER Value, 143 UINT32 Width) 144 { 145 void *LogicalAddress; 146 147 if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK) { 148 return(AE_NOT_EXIST); 149 } 150 151 switch (Width) { 152 case 8: 153 (*(volatile u_int8_t *)LogicalAddress) = Value & 0xff; 154 break; 155 case 16: 156 (*(volatile u_int16_t *)LogicalAddress) = Value & 0xffff; 157 break; 158 case 32: 159 (*(volatile u_int32_t *)LogicalAddress) = Value & 0xffffffff; 160 break; 161 case 64: 162 (*(volatile u_int64_t *)LogicalAddress) = Value; 163 break; 164 default: 165 /* debug trap goes here */ 166 } 167 168 AcpiOsUnmapMemory(LogicalAddress, Width / 8); 169 170 return(AE_OK); 171 } 172