157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
/*-
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* Copyright (c) 2000 Mitsaru Iwasaki
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* Copyright (c) 2000 Michael Smith
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* Copyright (c) 2000 BSDi
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* 6.2 : Memory Management
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*/
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#include "acpi.h"
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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MALLOC_DEFINE(M_ACPICA, "acpica", "ACPI CA memory pool");
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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_ACPICA, M_NOWAIT));
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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_ACPICA);
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}
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ACPI_STATUS
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AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Length,
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void **LogicalAddress)
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{
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*LogicalAddress = pmap_mapdev((vm_offset_t)PhysicalAddress, Length);
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if (*LogicalAddress == NULL)
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return (AE_BAD_ADDRESS);
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return (AE_OK);
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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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pmap_unmapdev((vm_offset_t)LogicalAddress, Length);
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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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/* We can't necessarily do this, so cop out. */
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return (AE_BAD_ADDRESS);
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}
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/*
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* There is no clean way to do this. We make the charitable assumption
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* that callers will not pass garbage to us.
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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 (TRUE);
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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 (TRUE);
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}
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ACPI_STATUS
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AcpiOsReadMemory(ACPI_PHYSICAL_ADDRESS Address, UINT32 *Value, UINT32 Width)
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{
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void *LogicalAddress;
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if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK)
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return (AE_NOT_EXIST);
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switch (Width) {
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case 8:
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*(u_int8_t *)Value = (*(volatile u_int8_t *)LogicalAddress);
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break;
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case 16:
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*(u_int16_t *)Value = (*(volatile u_int16_t *)LogicalAddress);
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break;
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case 32:
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*(u_int32_t *)Value = (*(volatile u_int32_t *)LogicalAddress);
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break;
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case 64:
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*(u_int64_t *)Value = (*(volatile u_int64_t *)LogicalAddress);
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break;
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default:
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/* debug trap goes here */
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break;
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}
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AcpiOsUnmapMemory(LogicalAddress, Width / 8);
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return (AE_OK);
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}
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ACPI_STATUS
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AcpiOsWriteMemory(ACPI_PHYSICAL_ADDRESS Address, UINT32 Value, UINT32 Width)
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{
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void *LogicalAddress;
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if (AcpiOsMapMemory(Address, Width / 8, &LogicalAddress) != AE_OK)
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return (AE_NOT_EXIST);
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switch (Width) {
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case 8:
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(*(volatile u_int8_t *)LogicalAddress) = Value & 0xff;
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break;
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case 16:
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(*(volatile u_int16_t *)LogicalAddress) = Value & 0xffff;
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break;
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case 32:
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(*(volatile u_int32_t *)LogicalAddress) = Value & 0xffffffff;
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break;
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case 64:
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(*(volatile u_int64_t *)LogicalAddress) = Value;
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break;
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default:
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/* debug trap goes here */
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break;
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}
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AcpiOsUnmapMemory(LogicalAddress, Width / 8);
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return (AE_OK);
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}
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