1 /* $NetBSD: OsdMemory.c,v 1.3 2009/08/18 16:41:02 jmcneill Exp $ */ 2 3 /* 4 * Copyright 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * OS Services Layer 40 * 41 * 6.2: Memory management. 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: OsdMemory.c,v 1.3 2009/08/18 16:41:02 jmcneill Exp $"); 46 47 #include <sys/param.h> 48 #include <sys/malloc.h> 49 50 #include <dev/acpi/acpica.h> 51 52 #include <machine/acpi_machdep.h> 53 54 MALLOC_DECLARE(M_ACPI); 55 56 /* 57 * AcpiOsMapMemory: 58 * 59 * Map physical memory into the caller's address space. 60 */ 61 void * 62 AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length) 63 { 64 ACPI_STATUS Status; 65 void *LogicalAddress = NULL; 66 67 Status = acpi_md_OsMapMemory(PhysicalAddress, Length, &LogicalAddress); 68 if (ACPI_FAILURE (Status)) 69 return NULL; 70 return LogicalAddress; 71 } 72 73 /* 74 * AcpiOsUnmapMemory: 75 * 76 * Remove a physical to logical memory mapping. 77 */ 78 void 79 AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length) 80 { 81 82 acpi_md_OsUnmapMemory(LogicalAddress, Length); 83 } 84 85 /* 86 * AcpiOsGetPhysicalAddress: 87 * 88 * Translate a logical address to a physical address. 89 */ 90 ACPI_STATUS 91 AcpiOsGetPhysicalAddress(void *LogicalAddress, 92 ACPI_PHYSICAL_ADDRESS *PhysicalAddress) 93 { 94 95 return acpi_md_OsGetPhysicalAddress(LogicalAddress, PhysicalAddress); 96 } 97 98 /* 99 * AcpiOsAllocate: 100 * 101 * Allocate memory from the dynamic memory pool. 102 */ 103 void * 104 AcpiOsAllocate(ACPI_SIZE Size) 105 { 106 107 return malloc(Size, M_ACPI, M_NOWAIT); 108 } 109 110 /* 111 * AcpiOsFree: 112 * 113 * Free previously allocated memory. 114 */ 115 void 116 AcpiOsFree(void *Memory) 117 { 118 119 free(Memory, M_ACPI); 120 } 121 122 123 /* 124 * AcpiOsReadable: 125 * 126 * Check if a memory region is readable. 127 */ 128 BOOLEAN 129 AcpiOsReadable(void *Pointer, ACPI_SIZE Length) 130 { 131 132 return acpi_md_OsReadable(Pointer, Length); 133 } 134 135 /* 136 * AcpiOsWritable: 137 * 138 * Check if a memory region is writable (and readable). 139 */ 140 BOOLEAN 141 AcpiOsWritable(void *Pointer, ACPI_SIZE Length) 142 { 143 144 return acpi_md_OsWritable(Pointer, Length); 145 } 146 147 ACPI_STATUS 148 AcpiOsValidateInterface(char *Interface) 149 { 150 151 return AE_SUPPORT; 152 } 153