/*      $NetBSD: OsdMemory.c,v 1.5 2012/04/22 06:33:04 jruoho Exp $     */

/*
* Copyright 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed for the NetBSD Project by
*      Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
*    or promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

/*
* OS Services Layer
*
* 6.2: Memory management.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: OsdMemory.c,v 1.5 2012/04/22 06:33:04 jruoho Exp $");

#include <sys/param.h>
#include <sys/malloc.h>

#include <dev/acpi/acpica.h>

#include <machine/acpi_machdep.h>

MALLOC_DECLARE(M_ACPI);

/*
* AcpiOsMapMemory:
*
*      Map physical memory into the caller's address space.
*/
void *
AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length)
{
       void *LogicalAddress = NULL;
       ACPI_STATUS Status;

       if (PhysicalAddress > ULONG_MAX)
               return NULL;

       Status = acpi_md_OsMapMemory(PhysicalAddress, Length, &LogicalAddress);

       if (ACPI_FAILURE(Status))
               return NULL;

       return LogicalAddress;
}

/*
* AcpiOsUnmapMemory:
*
*      Remove a physical to logical memory mapping.
*/
void
AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Length)
{

       acpi_md_OsUnmapMemory(LogicalAddress, Length);
}

/*
* AcpiOsGetPhysicalAddress:
*
*      Translate a logical address to a physical address.
*/
ACPI_STATUS
AcpiOsGetPhysicalAddress(void *LogicalAddress,
   ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
{

       return acpi_md_OsGetPhysicalAddress(LogicalAddress, PhysicalAddress);
}

/*
* AcpiOsAllocate:
*
*      Allocate memory from the dynamic memory pool.
*/
void *
AcpiOsAllocate(ACPI_SIZE Size)
{

       return malloc(Size, M_ACPI, M_NOWAIT);
}

/*
* AcpiOsFree:
*
*      Free previously allocated memory.
*/
void
AcpiOsFree(void *Memory)
{

       free(Memory, M_ACPI);
}


/*
* AcpiOsReadable:
*
*      Check if a memory region is readable.
*/
BOOLEAN
AcpiOsReadable(void *Pointer, ACPI_SIZE Length)
{

       return acpi_md_OsReadable(Pointer, Length);
}

/*
* AcpiOsWritable:
*
*      Check if a memory region is writable (and readable).
*/
BOOLEAN
AcpiOsWritable(void *Pointer, ACPI_SIZE Length)
{

       return acpi_md_OsWritable(Pointer, Length);
}