| 1 | /* $NetBSD: OsdMemory.c,v 1.5 2012/04/22 06:33:04 jruoho 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 1.5 2012/04/22 06:33:04 jruoho 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 | void *LogicalAddress = NULL; |
| 65 | ACPI_STATUS Status; |
| 66 | |
| 67 | if (PhysicalAddress > ULONG_MAX) |
| 68 | return NULL; |
| 69 | |
| 70 | Status = acpi_md_OsMapMemory(PhysicalAddress, Length, &LogicalAddress); |
| 71 | |
| 72 | if (ACPI_FAILURE(Status)) |
| 73 | return NULL; |
| 74 | |
| 75 | return LogicalAddress; |
| 76 | } |
| 77 | |
| 78 | /* |
| 79 | * AcpiOsUnmapMemory: |
| 80 | * |
| 81 | * Remove a physical to logical memory mapping. |
| 82 | */ |
| 83 | void |
| 84 | AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length) |
| 85 | { |
| 86 | |
| 87 | acpi_md_OsUnmapMemory(LogicalAddress, Length); |
| 88 | } |
| 89 | |
| 90 | /* |
| 91 | * AcpiOsGetPhysicalAddress: |
| 92 | * |
| 93 | * Translate a logical address to a physical address. |
| 94 | */ |
| 95 | ACPI_STATUS |
| 96 | AcpiOsGetPhysicalAddress(void *LogicalAddress, |
| 97 | ACPI_PHYSICAL_ADDRESS *PhysicalAddress) |
| 98 | { |
| 99 | |
| 100 | return acpi_md_OsGetPhysicalAddress(LogicalAddress, PhysicalAddress); |
| 101 | } |
| 102 | |
| 103 | /* |
| 104 | * AcpiOsAllocate: |
| 105 | * |
| 106 | * Allocate memory from the dynamic memory pool. |
| 107 | */ |
| 108 | void * |
| 109 | AcpiOsAllocate(ACPI_SIZE Size) |
| 110 | { |
| 111 | |
| 112 | return malloc(Size, M_ACPI, M_NOWAIT); |
| 113 | } |
| 114 | |
| 115 | /* |
| 116 | * AcpiOsFree: |
| 117 | * |
| 118 | * Free previously allocated memory. |
| 119 | */ |
| 120 | void |
| 121 | AcpiOsFree(void *Memory) |
| 122 | { |
| 123 | |
| 124 | free(Memory, M_ACPI); |
| 125 | } |
| 126 | |
| 127 | |
| 128 | /* |
| 129 | * AcpiOsReadable: |
| 130 | * |
| 131 | * Check if a memory region is readable. |
| 132 | */ |
| 133 | BOOLEAN |
| 134 | AcpiOsReadable(void *Pointer, ACPI_SIZE Length) |
| 135 | { |
| 136 | |
| 137 | return acpi_md_OsReadable(Pointer, Length); |
| 138 | } |
| 139 | |
| 140 | /* |
| 141 | * AcpiOsWritable: |
| 142 | * |
| 143 | * Check if a memory region is writable (and readable). |
| 144 | */ |
| 145 | BOOLEAN |
| 146 | AcpiOsWritable(void *Pointer, ACPI_SIZE Length) |
| 147 | { |
| 148 | |
| 149 | return acpi_md_OsWritable(Pointer, Length); |
| 150 | } |
| 151 | |