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      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