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: 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 1.1 2003/09/24 03:32:16 drhodus Exp $ 30 */ 31 32 /* 33 * 6.2 : Memory Management 34 */ 35 36 #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 43 static 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 ACPI_STATUS 58 AcpiOsMapMemory (ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length, void **LogicalAddress) 59 { 60 *LogicalAddress = pmap_mapdev((vm_offset_t)PhysicalAddress, Length); 61 if (*LogicalAddress == NULL) 62 return(AE_BAD_ADDRESS); 63 return(AE_OK); 64 } 65 66 void 67 AcpiOsUnmapMemory (void *LogicalAddress, ACPI_SIZE Length) 68 { 69 pmap_unmapdev((vm_offset_t)LogicalAddress, Length); 70 } 71 72 ACPI_STATUS 73 AcpiOsGetPhysicalAddress(void *LogicalAddress, ACPI_PHYSICAL_ADDRESS *PhysicalAddress) 74 { 75 /* we can't necessarily do this, so cop out */ 76 return(AE_BAD_ADDRESS); 77 } 78 79 /* 80 * There is no clean way to do this. We make the charitable assumption 81 * that callers will not pass garbage to us. 82 */ 83 BOOLEAN 84 AcpiOsReadable (void *Pointer, UINT32 Length) 85 { 86 return(TRUE); 87 } 88 89 BOOLEAN 90 AcpiOsWritable (void *Pointer, UINT32 Length) 91 { 92 return(TRUE); 93 } 94 95 ACPI_STATUS 96 AcpiOsReadMemory ( 97 ACPI_PHYSICAL_ADDRESS Address, 98 void *Value, 99 UINT32 Width) 100 { 101 void *LogicalAddress; 102 103 if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK) { 104 return(AE_NOT_EXIST); 105 } 106 107 switch (Width) { 108 case 8: 109 *(u_int8_t *)Value = (*(volatile u_int8_t *)LogicalAddress); 110 break; 111 case 16: 112 *(u_int16_t *)Value = (*(volatile u_int16_t *)LogicalAddress); 113 break; 114 case 32: 115 *(u_int32_t *)Value = (*(volatile u_int32_t *)LogicalAddress); 116 break; 117 case 64: 118 *(u_int64_t *)Value = (*(volatile u_int64_t *)LogicalAddress); 119 break; 120 default: 121 /* debug trap goes here */ 122 break; 123 } 124 125 AcpiOsUnmapMemory(LogicalAddress, Width / 8); 126 127 return(AE_OK); 128 } 129 130 ACPI_STATUS 131 AcpiOsWriteMemory ( 132 ACPI_PHYSICAL_ADDRESS Address, 133 ACPI_INTEGER Value, 134 UINT32 Width) 135 { 136 void *LogicalAddress; 137 138 if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK) { 139 return(AE_NOT_EXIST); 140 } 141 142 switch (Width) { 143 case 8: 144 (*(volatile u_int8_t *)LogicalAddress) = Value & 0xff; 145 break; 146 case 16: 147 (*(volatile u_int16_t *)LogicalAddress) = Value & 0xffff; 148 break; 149 case 32: 150 (*(volatile u_int32_t *)LogicalAddress) = Value & 0xffffffff; 151 break; 152 case 64: 153 (*(volatile u_int64_t *)LogicalAddress) = Value; 154 break; 155 default: 156 /* debug trap goes here */ 157 break; 158 } 159 160 AcpiOsUnmapMemory(LogicalAddress, Width / 8); 161 162 return(AE_OK); 163 } 164