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("$FreeBSD$"); 35 36 #include <contrib/dev/acpica/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 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, 59 void **LogicalAddress) 60 { 61 *LogicalAddress = pmap_mapdev((vm_offset_t)PhysicalAddress, Length); 62 if (*LogicalAddress == NULL) 63 return (AE_BAD_ADDRESS); 64 return (AE_OK); 65 } 66 67 void 68 AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length) 69 { 70 pmap_unmapdev((vm_offset_t)LogicalAddress, Length); 71 } 72 73 ACPI_STATUS 74 AcpiOsGetPhysicalAddress(void *LogicalAddress, 75 ACPI_PHYSICAL_ADDRESS *PhysicalAddress) 76 { 77 /* We can't necessarily do this, so cop out. */ 78 return (AE_BAD_ADDRESS); 79 } 80 81 /* 82 * There is no clean way to do this. We make the charitable assumption 83 * that callers will not pass garbage to us. 84 */ 85 BOOLEAN 86 AcpiOsReadable (void *Pointer, ACPI_SIZE Length) 87 { 88 return (TRUE); 89 } 90 91 BOOLEAN 92 AcpiOsWritable (void *Pointer, ACPI_SIZE Length) 93 { 94 return (TRUE); 95 } 96 97 ACPI_STATUS 98 AcpiOsReadMemory(ACPI_PHYSICAL_ADDRESS Address, UINT32 *Value, UINT32 Width) 99 { 100 void *LogicalAddress; 101 102 if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK) 103 return (AE_NOT_EXIST); 104 105 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 } 127 128 ACPI_STATUS 129 AcpiOsWriteMemory(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