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 /* 83 * There is no clean way to do this. We make the charitable assumption 84 * that callers will not pass garbage to us. 85 */ 86 BOOLEAN 87 AcpiOsReadable (void *Pointer, UINT32 Length) 88 { 89 return(TRUE); 90 } 91 92 BOOLEAN 93 AcpiOsWritable (void *Pointer, UINT32 Length) 94 { 95 return(TRUE); 96 } 97 98 static __inline 99 UINT32 100 AcpiOsMemInX (UINT32 Length, ACPI_PHYSICAL_ADDRESS InAddr) 101 { 102 UINT32 Value; 103 void *LogicalAddress; 104 105 if (AcpiOsMapMemory(InAddr, Length, &LogicalAddress) != AE_OK) { 106 return(0); 107 } 108 109 switch (Length) { 110 case 1: 111 Value = (*(volatile u_int8_t *)LogicalAddress) & 0xff; 112 break; 113 case 2: 114 Value = (*(volatile u_int16_t *)LogicalAddress) & 0xffff; 115 break; 116 case 4: 117 Value = (*(volatile u_int32_t *)LogicalAddress); 118 break; 119 } 120 121 AcpiOsUnmapMemory(LogicalAddress, Length); 122 123 return(Value); 124 } 125 126 UINT8 127 AcpiOsMemIn8 (ACPI_PHYSICAL_ADDRESS InAddr) 128 { 129 return((UINT8)AcpiOsMemInX(1, InAddr)); 130 } 131 132 UINT16 133 AcpiOsMemIn16 (ACPI_PHYSICAL_ADDRESS InAddr) 134 { 135 return((UINT16)AcpiOsMemInX(2, InAddr)); 136 } 137 138 UINT32 139 AcpiOsMemIn32 (ACPI_PHYSICAL_ADDRESS InAddr) 140 { 141 return((UINT32)AcpiOsMemInX(4, InAddr)); 142 } 143 144 static __inline 145 void 146 AcpiOsMemOutX (UINT32 Length, ACPI_PHYSICAL_ADDRESS OutAddr, UINT32 Value) 147 { 148 void *LogicalAddress; 149 150 if (AcpiOsMapMemory(OutAddr, Length, &LogicalAddress) != AE_OK) { 151 return; 152 } 153 154 switch (Length) { 155 case 1: 156 (*(volatile u_int8_t *)LogicalAddress) = Value & 0xff; 157 break; 158 case 2: 159 (*(volatile u_int16_t *)LogicalAddress) = Value & 0xffff; 160 break; 161 case 4: 162 (*(volatile u_int32_t *)LogicalAddress) = Value; 163 break; 164 } 165 166 AcpiOsUnmapMemory(LogicalAddress, Length); 167 } 168 169 void 170 AcpiOsMemOut8 (ACPI_PHYSICAL_ADDRESS OutAddr, UINT8 Value) 171 { 172 AcpiOsMemOutX(1, OutAddr, (UINT32)Value); 173 } 174 175 void 176 AcpiOsMemOut16 (ACPI_PHYSICAL_ADDRESS OutAddr, UINT16 Value) 177 { 178 AcpiOsMemOutX(2, OutAddr, (UINT32)Value); 179 } 180 181 void 182 AcpiOsMemOut32 (ACPI_PHYSICAL_ADDRESS OutAddr, UINT32 Value) 183 { 184 AcpiOsMemOutX(4, OutAddr, (UINT32)Value); 185 } 186 187