# $NetBSD: README,v 1.4 2010/07/24 06:10:43 jruoho Exp $
This is the Intel ACPI Component Architecture, Intel's reference
implementation of the core operating system ACPI support. The
portion in the acpica/ subdirectory is provided by the operating
system as the glue between the OS and the ACPICA.
Please, do not import an updated ACPICA snapshot from Intel unless
you absolutely know what you're doing -- The Intel directory layout
changes from release to release, and we must munge it (by hand) into
something sane that we can use.
The routines that the operating system must provide are documented
in the following document:
Intel Corp., ACPI Component Architecture Programmer Reference
Copies of the document may be retrieved from:
http://www.acpica.org/download/acpica-reference.pdf
Machine-dependent code must provide at least the following routines:
ACPI_STATUS acpi_md_OsInitialize(void);
ACPI_STATUS acpi_md_OsTerminate(void);
ACPI_STATUS acpi_md_OsGetRootPointer(UINT32 Flags,
ACPI_PHYSICAL_ADDRESS *PhysicalAddress);
UINT8 acpi_md_OsIn8(ACPI_IO_ADDRESS InPort);
UINT16 acpi_md_OsIn16(ACPI_IO_ADDRESS InPort);
UINT32 acpi_md_OsIn32(ACPI_IO_ADDRESS InPort);
void acpi_md_OsOut8(ACPI_IO_ADDRESS OutPort, UINT8 Value);
void acpi_md_OsOut16(ACPI_IO_ADDRESS OutPort, UINT16 Value);
void acpi_md_OsOut32(ACPI_IO_ADDRESS OutPort, UINT32 Value);
ACPI_STATUS acpi_md_OsInstallInterruptHandler(UINT32 InterruptNumber,
OSD_HANDLER ServiceRoutine, void *Context, void **cookiep);
void acpi_md_OsRemoveInterruptHandler(void *cookie);
ACPI_STATUS acpi_md_OsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress,
UINT32 Length, void **LogicalAddress);
void acpi_md_OsUnmapMemory(void *LogicalAddress, UINT32 Length);
ACPI_STATUS acpi_md_OsGetPhysicalAddress(void *LogicalAddress,
ACPI_PHYSICAL_ADDRESS *PhysicalAddress);
BOOLEAN acpi_md_OsReadable(void *Pointer, UINT32 Length);
BOOLEAN acpi_md_OsWritable(void *Pointer, UINT32 Length);
-- Jason R. Thorpe <thorpej@wasabisystems.com>
