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/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 void * 58 AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length) 59 { 60 return (pmap_mapbios((vm_offset_t)PhysicalAddress, Length)); 61 } 62 63 void 64 AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length) 65 { 66 pmap_unmapbios((vm_offset_t)LogicalAddress, Length); 67 } 68 69 ACPI_STATUS 70 AcpiOsGetPhysicalAddress(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 77 BOOLEAN 78 AcpiOsReadable (void *Pointer, ACPI_SIZE Length) 79 { 80 return (TRUE); 81 } 82 83 BOOLEAN 84 AcpiOsWritable (void *Pointer, ACPI_SIZE Length) 85 { 86 return (TRUE); 87 } 88 89 ACPI_STATUS 90 AcpiOsReadMemory(ACPI_PHYSICAL_ADDRESS Address, UINT64 *Value, UINT32 Width) 91 { 92 void *LogicalAddress; 93 94 LogicalAddress = pmap_mapdev(Address, Width / 8); 95 if (LogicalAddress == NULL) 96 return (AE_NOT_EXIST); 97 98 switch (Width) { 99 case 8: 100 *Value = *(volatile uint8_t *)LogicalAddress; 101 break; 102 case 16: 103 *Value = *(volatile uint16_t *)LogicalAddress; 104 break; 105 case 32: 106 *Value = *(volatile uint32_t *)LogicalAddress; 107 break; 108 case 64: 109 *Value = *(volatile uint64_t *)LogicalAddress; 110 break; 111 } 112 113 pmap_unmapdev((vm_offset_t)LogicalAddress, Width / 8); 114 115 return (AE_OK); 116 } 117 118 ACPI_STATUS 119 AcpiOsWriteMemory(ACPI_PHYSICAL_ADDRESS Address, UINT64 Value, UINT32 Width) 120 { 121 void *LogicalAddress; 122 123 LogicalAddress = pmap_mapdev(Address, Width / 8); 124 if (LogicalAddress == NULL) 125 return (AE_NOT_EXIST); 126 127 switch (Width) { 128 case 8: 129 *(volatile uint8_t *)LogicalAddress = Value; 130 break; 131 case 16: 132 *(volatile uint16_t *)LogicalAddress = Value; 133 break; 134 case 32: 135 *(volatile uint32_t *)LogicalAddress = Value; 136 break; 137 case 64: 138 *(volatile uint64_t *)LogicalAddress = Value; 139 break; 140 } 141 142 pmap_unmapdev((vm_offset_t)LogicalAddress, Width / 8); 143 144 return (AE_OK); 145 } 146