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[efi] Remove obsolete EFI I/O implementation using EFI_CPU_IO_PROTOCOL
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
@@ -1,218 +0,0 @@
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/*
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* Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <assert.h>
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#include <ipxe/io.h>
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#include <ipxe/efi/efi.h>
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#include <ipxe/efi/Protocol/CpuIo.h>
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#include <ipxe/efi/efi_io.h>
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/** @file
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*
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* iPXE I/O API for EFI
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*
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*/
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/** CPU I/O protocol */
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static EFI_CPU_IO_PROTOCOL *cpu_io;
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EFI_REQUIRE_PROTOCOL ( EFI_CPU_IO_PROTOCOL, &cpu_io );
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/** Maximum address that can be used for port I/O */
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#define MAX_PORT_ADDRESS 0xffff
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/**
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* Determine whether or not address is a port I/O address
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*
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* @v io_addr I/O address
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* @v is_port I/O address is a port I/O address
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*/
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#define IS_PORT_ADDRESS(io_addr) \
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( ( ( intptr_t ) (io_addr) ) <= MAX_PORT_ADDRESS )
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/**
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* Determine EFI CPU I/O width code
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*
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* @v size Size of value
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* @ret width EFI width code
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*
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* Someone at Intel clearly gets paid by the number of lines of code
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* they write. No-one should ever be able to make I/O this
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* convoluted. The EFI_CPU_IO_PROTOCOL_WIDTH enum is my favourite
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* idiocy.
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*/
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static EFI_CPU_IO_PROTOCOL_WIDTH efi_width ( size_t size ) {
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switch ( size ) {
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case 1 : return EfiCpuIoWidthFifoUint8;
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case 2 : return EfiCpuIoWidthFifoUint16;
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case 4 : return EfiCpuIoWidthFifoUint32;
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case 8 : return EfiCpuIoWidthFifoUint64;
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default :
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assert ( 0 );
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/* I wonder what this will actually do... */
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return EfiCpuIoWidthMaximum;
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}
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}
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/**
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* Read from device
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*
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* @v io_addr I/O address
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* @v size Size of value
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* @ret data Value read
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*/
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unsigned long long efi_ioread ( volatile void *io_addr, size_t size ) {
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EFI_CPU_IO_PROTOCOL_IO_MEM read;
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unsigned long long data = 0;
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EFI_STATUS efirc;
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read = ( IS_PORT_ADDRESS ( io_addr ) ?
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cpu_io->Io.Read : cpu_io->Mem.Read );
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if ( ( efirc = read ( cpu_io, efi_width ( size ),
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( intptr_t ) io_addr, 1,
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( void * ) &data ) ) != 0 ) {
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DBG ( "EFI I/O read at %p failed: %s\n",
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io_addr, efi_strerror ( efirc ) );
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return -1ULL;
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}
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return data;
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}
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/**
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* Write to device
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*
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* @v data Value to write
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* @v io_addr I/O address
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* @v size Size of value
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*/
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void efi_iowrite ( unsigned long long data, volatile void *io_addr,
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size_t size ) {
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EFI_CPU_IO_PROTOCOL_IO_MEM write;
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EFI_STATUS efirc;
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write = ( IS_PORT_ADDRESS ( io_addr ) ?
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cpu_io->Io.Write : cpu_io->Mem.Write );
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if ( ( efirc = write ( cpu_io, efi_width ( size ),
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( intptr_t ) io_addr, 1,
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( void * ) &data ) ) != 0 ) {
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DBG ( "EFI I/O write at %p failed: %s\n",
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io_addr, efi_strerror ( efirc ) );
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}
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}
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/**
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* String read from device
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*
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* @v io_addr I/O address
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* @v data Data buffer
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* @v size Size of values
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* @v count Number of values to read
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*/
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void efi_ioreads ( volatile void *io_addr, void *data,
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size_t size, unsigned int count ) {
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EFI_CPU_IO_PROTOCOL_IO_MEM read;
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EFI_STATUS efirc;
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read = ( IS_PORT_ADDRESS ( io_addr ) ?
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cpu_io->Io.Read : cpu_io->Mem.Read );
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if ( ( efirc = read ( cpu_io, efi_width ( size ),
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( intptr_t ) io_addr, count,
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( void * ) data ) ) != 0 ) {
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DBG ( "EFI I/O string read at %p failed: %s\n",
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io_addr, efi_strerror ( efirc ) );
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}
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}
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/**
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* String write to device
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*
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* @v io_addr I/O address
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* @v data Data buffer
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* @v size Size of values
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* @v count Number of values to write
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*/
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void efi_iowrites ( volatile void *io_addr, const void *data,
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size_t size, unsigned int count ) {
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EFI_CPU_IO_PROTOCOL_IO_MEM write;
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EFI_STATUS efirc;
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write = ( IS_PORT_ADDRESS ( io_addr ) ?
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cpu_io->Io.Write : cpu_io->Mem.Write );
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if ( ( efirc = write ( cpu_io, efi_width ( size ),
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( intptr_t ) io_addr, count,
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( void * ) data ) ) != 0 ) {
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DBG ( "EFI I/O write at %p failed: %s\n",
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io_addr, efi_strerror ( efirc ) );
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}
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}
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/**
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* Wait for I/O-mapped operation to complete
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*
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*/
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static void efi_iodelay ( void ) {
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/* Write to non-existent port. Probably x86-only. */
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outb ( 0, 0x80 );
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}
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/**
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* Get memory map
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*
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* Can't be done on EFI so return an empty map
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*
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* @v memmap Memory map to fill in
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*/
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static void efi_get_memmap ( struct memory_map *memmap ) {
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memmap->count = 0;
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}
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PROVIDE_IOAPI_INLINE ( efi, phys_to_bus );
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PROVIDE_IOAPI_INLINE ( efi, bus_to_phys );
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PROVIDE_IOAPI_INLINE ( efi, ioremap );
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PROVIDE_IOAPI_INLINE ( efi, iounmap );
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PROVIDE_IOAPI_INLINE ( efi, io_to_bus );
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PROVIDE_IOAPI_INLINE ( efi, readb );
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PROVIDE_IOAPI_INLINE ( efi, readw );
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PROVIDE_IOAPI_INLINE ( efi, readl );
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PROVIDE_IOAPI_INLINE ( efi, readq );
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PROVIDE_IOAPI_INLINE ( efi, writeb );
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PROVIDE_IOAPI_INLINE ( efi, writew );
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PROVIDE_IOAPI_INLINE ( efi, writel );
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PROVIDE_IOAPI_INLINE ( efi, writeq );
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PROVIDE_IOAPI_INLINE ( efi, inb );
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PROVIDE_IOAPI_INLINE ( efi, inw );
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PROVIDE_IOAPI_INLINE ( efi, inl );
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PROVIDE_IOAPI_INLINE ( efi, outb );
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PROVIDE_IOAPI_INLINE ( efi, outw );
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PROVIDE_IOAPI_INLINE ( efi, outl );
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PROVIDE_IOAPI_INLINE ( efi, insb );
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PROVIDE_IOAPI_INLINE ( efi, insw );
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PROVIDE_IOAPI_INLINE ( efi, insl );
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PROVIDE_IOAPI_INLINE ( efi, outsb );
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PROVIDE_IOAPI_INLINE ( efi, outsw );
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PROVIDE_IOAPI_INLINE ( efi, outsl );
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PROVIDE_IOAPI ( efi, iodelay, efi_iodelay );
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PROVIDE_IOAPI_INLINE ( efi, mb );
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PROVIDE_IOAPI ( efi, get_memmap, efi_get_memmap );
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