151 lines
3.6 KiB
C
151 lines
3.6 KiB
C
/* $NetBSD: OsdMemory.c,v 1.5 2012/04/22 06:33:04 jruoho Exp $ */
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/*
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* Copyright 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* OS Services Layer
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*
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* 6.2: Memory management.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: OsdMemory.c,v 1.5 2012/04/22 06:33:04 jruoho Exp $");
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#include <sys/param.h>
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#include <sys/malloc.h>
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#include <dev/acpi/acpica.h>
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#include <machine/acpi_machdep.h>
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MALLOC_DECLARE(M_ACPI);
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/*
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* AcpiOsMapMemory:
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*
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* Map physical memory into the caller's address space.
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*/
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void *
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AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length)
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{
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void *LogicalAddress = NULL;
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ACPI_STATUS Status;
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if (PhysicalAddress > ULONG_MAX)
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return NULL;
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Status = acpi_md_OsMapMemory(PhysicalAddress, Length, &LogicalAddress);
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if (ACPI_FAILURE(Status))
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return NULL;
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return LogicalAddress;
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}
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/*
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* AcpiOsUnmapMemory:
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*
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* Remove a physical to logical memory mapping.
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*/
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void
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AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length)
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{
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acpi_md_OsUnmapMemory(LogicalAddress, Length);
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}
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/*
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* AcpiOsGetPhysicalAddress:
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*
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* Translate a logical address to a physical address.
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*/
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ACPI_STATUS
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AcpiOsGetPhysicalAddress(void *LogicalAddress,
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ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
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{
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return acpi_md_OsGetPhysicalAddress(LogicalAddress, PhysicalAddress);
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}
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/*
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* AcpiOsAllocate:
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*
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* Allocate memory from the dynamic memory pool.
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*/
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void *
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AcpiOsAllocate(ACPI_SIZE Size)
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{
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return malloc(Size, M_ACPI, M_NOWAIT);
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}
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/*
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* AcpiOsFree:
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*
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* Free previously allocated memory.
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*/
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void
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AcpiOsFree(void *Memory)
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{
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free(Memory, M_ACPI);
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}
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/*
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* AcpiOsReadable:
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*
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* Check if a memory region is readable.
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*/
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BOOLEAN
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AcpiOsReadable(void *Pointer, ACPI_SIZE Length)
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{
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return acpi_md_OsReadable(Pointer, Length);
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}
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/*
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* AcpiOsWritable:
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*
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* Check if a memory region is writable (and readable).
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*/
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BOOLEAN
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AcpiOsWritable(void *Pointer, ACPI_SIZE Length)
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{
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return acpi_md_OsWritable(Pointer, Length);
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}
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