+++ /dev/null
-/** @file
- This code abstracts the CPU IO Protocol which installed by some platform or chipset-specific
- PEIM that abstracts the processor-visible I/O operations.
-
- Note: This is a runtime protocol and can be used by runtime drivers after ExitBootServices().
- It is different from the PI 1.2 CPU I/O 2 Protocol, which is a boot services only protocol
- and may not be used by runtime drivers after ExitBootServices().
-
-Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials are licensed and made available under
-the terms and conditions of the BSD License that accompanies this distribution.
-The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php.
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
- @par Revision Reference:
- CPU IO Protocol is defined in Framework of EFI CPU IO Protocol Spec
- Version 0.9.
-
-**/
-
-#ifndef _CPUIO_H_
-#define _CPUIO_H_
-
-FILE_LICENCE ( BSD3 );
-
-#include <ipxe/efi/Protocol/CpuIo2.h>
-
-#define EFI_CPU_IO_PROTOCOL_GUID \
- { \
- 0xB0732526, 0x38C8, 0x4b40, {0x88, 0x77, 0x61, 0xC7, 0xB0, 0x6A, 0xAC, 0x45 } \
- }
-
-//
-// Framework CPU IO protocol structure is the same as CPU IO 2 protocol defined in PI 1.2 spec.
-// However, there is a significant different between the Framework CPU I/O
-// Protocol and the PI 1.2 CPU I/O 2 Protocol. The Framework one is a runtime
-// protocol, which means it can be used by runtime drivers after ExitBootServices().
-// The PI one is not runtime safe, so it is a boot services only protocol and may
-// not be used by runtime drivers after ExitBootServices().
-//
-typedef EFI_CPU_IO2_PROTOCOL EFI_CPU_IO_PROTOCOL;
-
-extern EFI_GUID gEfiCpuIoProtocolGuid;
-
-#endif
+++ /dev/null
-/** @file
- This files describes the CPU I/O 2 Protocol.
-
- This protocol provides an I/O abstraction for a system processor. This protocol
- is used by a PCI root bridge I/O driver to perform memory-mapped I/O and I/O transactions.
- The I/O or memory primitives can be used by the consumer of the protocol to materialize
- bus-specific configuration cycles, such as the transitional configuration address and data
- ports for PCI. Only drivers that require direct access to the entire system should use this
- protocol.
-
- Note: This is a boot-services only protocol and it may not be used by runtime drivers after
- ExitBootServices(). It is different from the Framework CPU I/O Protocol, which is a runtime
- protocol and can be used by runtime drivers after ExitBootServices().
-
- Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
- @par Revision Reference:
- This Protocol is defined in UEFI Platform Initialization Specification 1.2
- Volume 5: Standards
-
-**/
-
-#ifndef __CPU_IO2_H__
-#define __CPU_IO2_H__
-
-FILE_LICENCE ( BSD3 );
-
-#define EFI_CPU_IO2_PROTOCOL_GUID \
- { \
- 0xad61f191, 0xae5f, 0x4c0e, {0xb9, 0xfa, 0xe8, 0x69, 0xd2, 0x88, 0xc6, 0x4f} \
- }
-
-typedef struct _EFI_CPU_IO2_PROTOCOL EFI_CPU_IO2_PROTOCOL;
-
-///
-/// Enumeration that defines the width of the I/O operation.
-///
-typedef enum {
- EfiCpuIoWidthUint8,
- EfiCpuIoWidthUint16,
- EfiCpuIoWidthUint32,
- EfiCpuIoWidthUint64,
- EfiCpuIoWidthFifoUint8,
- EfiCpuIoWidthFifoUint16,
- EfiCpuIoWidthFifoUint32,
- EfiCpuIoWidthFifoUint64,
- EfiCpuIoWidthFillUint8,
- EfiCpuIoWidthFillUint16,
- EfiCpuIoWidthFillUint32,
- EfiCpuIoWidthFillUint64,
- EfiCpuIoWidthMaximum
-} EFI_CPU_IO_PROTOCOL_WIDTH;
-
-/**
- Enables a driver to access registers in the PI CPU I/O space.
-
- The Io.Read() and Io.Write() functions enable a driver to access PCI controller
- registers in the PI CPU I/O space.
-
- The I/O operations are carried out exactly as requested. The caller is responsible
- for satisfying any alignment and I/O width restrictions that a PI System on a
- platform might require. For example on some platforms, width requests of
- EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, will
- be handled by the driver.
-
- If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32,
- or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for
- each of the Count operations that is performed.
-
- If Width is EfiCpuIoWidthFifoUint8, EfiCpuIoWidthFifoUint16,
- EfiCpuIoWidthFifoUint32, or EfiCpuIoWidthFifoUint64, then only Buffer is
- incremented for each of the Count operations that is performed. The read or
- write operation is performed Count times on the same Address.
-
- If Width is EfiCpuIoWidthFillUint8, EfiCpuIoWidthFillUint16,
- EfiCpuIoWidthFillUint32, or EfiCpuIoWidthFillUint64, then only Address is
- incremented for each of the Count operations that is performed. The read or
- write operation is performed Count times from the first element of Buffer.
-
- @param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance.
- @param[in] Width Signifies the width of the I/O or Memory operation.
- @param[in] Address The base address of the I/O operation.
- @param[in] Count The number of I/O operations to perform. The number
- of bytes moved is Width size * Count, starting at Address.
- @param[in, out] Buffer For read operations, the destination buffer to store the results.
- For write operations, the source buffer from which to write data.
-
- @retval EFI_SUCCESS The data was read from or written to the PI system.
- @retval EFI_INVALID_PARAMETER Width is invalid for this PI system.
- @retval EFI_INVALID_PARAMETER Buffer is NULL.
- @retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
- @retval EFI_UNSUPPORTED The address range specified by Address, Width,
- and Count is not valid for this PI system.
-
-**/
-typedef
-EFI_STATUS
-(EFIAPI *EFI_CPU_IO_PROTOCOL_IO_MEM)(
- IN EFI_CPU_IO2_PROTOCOL *This,
- IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
- IN UINT64 Address,
- IN UINTN Count,
- IN OUT VOID *Buffer
- );
-
-///
-/// Service for read and write accesses.
-///
-typedef struct {
- ///
- /// This service provides the various modalities of memory and I/O read.
- ///
- EFI_CPU_IO_PROTOCOL_IO_MEM Read;
- ///
- /// This service provides the various modalities of memory and I/O write.
- ///
- EFI_CPU_IO_PROTOCOL_IO_MEM Write;
-} EFI_CPU_IO_PROTOCOL_ACCESS;
-
-///
-/// Provides the basic memory and I/O interfaces that are used to abstract
-/// accesses to devices in a system.
-///
-struct _EFI_CPU_IO2_PROTOCOL {
- ///
- /// Enables a driver to access memory-mapped registers in the EFI system memory space.
- ///
- EFI_CPU_IO_PROTOCOL_ACCESS Mem;
- ///
- /// Enables a driver to access registers in the EFI CPU I/O space.
- ///
- EFI_CPU_IO_PROTOCOL_ACCESS Io;
-};
-
-extern EFI_GUID gEfiCpuIo2ProtocolGuid;
-
-#endif
+++ /dev/null
-#ifndef _IPXE_EFI_IO_H
-#define _IPXE_EFI_IO_H
-
-/** @file
- *
- * iPXE I/O API for EFI
- *
- * EFI runs with flat physical addressing, so the various mappings
- * between virtual addresses, I/O addresses and bus addresses are all
- * no-ops. I/O is handled using the EFI_CPU_IO_PROTOCOL.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-#ifdef IOAPI_EFI
-#define IOAPI_PREFIX_efi
-#else
-#define IOAPI_PREFIX_efi __efi_
-#endif
-
-extern unsigned long long efi_ioread ( volatile void *io_addr,
- size_t size );
-extern void efi_iowrite ( unsigned long long data, volatile void *io_addr,
- size_t size );
-extern void efi_ioreads ( volatile void *io_addr, void *data,
- size_t size, unsigned int count );
-extern void efi_iowrites ( volatile void *io_addr, const void *data,
- size_t size, unsigned int count );
-
-/*
- * Physical<->Bus and Bus<->I/O address mappings
- *
- * EFI runs with flat physical addressing, so these are all no-ops.
- *
- */
-
-static inline __always_inline unsigned long
-IOAPI_INLINE ( efi, phys_to_bus ) ( unsigned long phys_addr ) {
- return phys_addr;
-}
-
-static inline __always_inline unsigned long
-IOAPI_INLINE ( efi, bus_to_phys ) ( unsigned long bus_addr ) {
- return bus_addr;
-}
-
-static inline __always_inline void *
-IOAPI_INLINE ( efi, ioremap ) ( unsigned long bus_addr, size_t len __unused ) {
- return ( ( void * ) bus_addr );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, iounmap ) ( volatile const void *io_addr __unused ) {
- /* Nothing to do */
-}
-
-static inline __always_inline unsigned long
-IOAPI_INLINE ( efi, io_to_bus ) ( volatile const void *io_addr ) {
- return ( ( unsigned long ) io_addr );
-}
-
-/*
- * I/O functions
- *
- */
-
-static inline __always_inline uint8_t
-IOAPI_INLINE ( efi, readb ) ( volatile uint8_t *io_addr ) {
- return efi_ioread ( io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline uint16_t
-IOAPI_INLINE ( efi, readw ) ( volatile uint16_t *io_addr ) {
- return efi_ioread ( io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline uint32_t
-IOAPI_INLINE ( efi, readl ) ( volatile uint32_t *io_addr ) {
- return efi_ioread ( io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline uint64_t
-IOAPI_INLINE ( efi, readq ) ( volatile uint64_t *io_addr ) {
- return efi_ioread ( io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, writeb ) ( uint8_t data, volatile uint8_t *io_addr ) {
- efi_iowrite ( data, io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, writew ) ( uint16_t data, volatile uint16_t *io_addr ) {
- efi_iowrite ( data, io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, writel ) ( uint32_t data, volatile uint32_t *io_addr ) {
- efi_iowrite ( data, io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, writeq ) ( uint64_t data, volatile uint64_t *io_addr ) {
- efi_iowrite ( data, io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline uint8_t
-IOAPI_INLINE ( efi, inb ) ( volatile uint8_t *io_addr ) {
- return efi_ioread ( io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline uint16_t
-IOAPI_INLINE ( efi, inw ) ( volatile uint16_t *io_addr ) {
- return efi_ioread ( io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline uint32_t
-IOAPI_INLINE ( efi, inl ) ( volatile uint32_t *io_addr ) {
- return efi_ioread ( io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, outb ) ( uint8_t data, volatile uint8_t *io_addr ) {
- efi_iowrite ( data, io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, outw ) ( uint16_t data, volatile uint16_t *io_addr ) {
- efi_iowrite ( data, io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, outl ) ( uint32_t data, volatile uint32_t *io_addr ) {
- efi_iowrite ( data, io_addr, sizeof ( *io_addr ) );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, insb ) ( volatile uint8_t *io_addr, uint8_t *data,
- unsigned int count ) {
- efi_ioreads ( io_addr, data, sizeof ( *io_addr ), count );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, insw ) ( volatile uint16_t *io_addr, uint16_t *data,
- unsigned int count ) {
- efi_ioreads ( io_addr, data, sizeof ( *io_addr ), count );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, insl ) ( volatile uint32_t *io_addr, uint32_t *data,
- unsigned int count ) {
- efi_ioreads ( io_addr, data, sizeof ( *io_addr ), count );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, outsb ) ( volatile uint8_t *io_addr, const uint8_t *data,
- unsigned int count ) {
- efi_iowrites ( io_addr, data, sizeof ( *io_addr ), count );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, outsw ) ( volatile uint16_t *io_addr, const uint16_t *data,
- unsigned int count ) {
- efi_iowrites ( io_addr, data, sizeof ( *io_addr ), count );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, outsl ) ( volatile uint32_t *io_addr, const uint32_t *data,
- unsigned int count ) {
- efi_iowrites ( io_addr, data, sizeof ( *io_addr ), count );
-}
-
-static inline __always_inline void
-IOAPI_INLINE ( efi, mb ) ( void ) {
- /* Do nothing; EFI readl()/writel() calls already act as
- * memory barriers.
- */
-}
-
-#endif /* _IPXE_EFI_IO_H */
PROVIDE_SINGLE_API_INLINE ( IOAPI_PREFIX_ ## _subsys, _api_func )
/* Include all architecture-independent I/O API headers */
-#include <ipxe/efi/efi_io.h>
/* Include all architecture-dependent I/O API headers */
#include <bits/io.h>
+++ /dev/null
-/*
- * Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-#include <assert.h>
-#include <ipxe/io.h>
-#include <ipxe/efi/efi.h>
-#include <ipxe/efi/Protocol/CpuIo.h>
-#include <ipxe/efi/efi_io.h>
-
-/** @file
- *
- * iPXE I/O API for EFI
- *
- */
-
-/** CPU I/O protocol */
-static EFI_CPU_IO_PROTOCOL *cpu_io;
-EFI_REQUIRE_PROTOCOL ( EFI_CPU_IO_PROTOCOL, &cpu_io );
-
-/** Maximum address that can be used for port I/O */
-#define MAX_PORT_ADDRESS 0xffff
-
-/**
- * Determine whether or not address is a port I/O address
- *
- * @v io_addr I/O address
- * @v is_port I/O address is a port I/O address
- */
-#define IS_PORT_ADDRESS(io_addr) \
- ( ( ( intptr_t ) (io_addr) ) <= MAX_PORT_ADDRESS )
-
-/**
- * Determine EFI CPU I/O width code
- *
- * @v size Size of value
- * @ret width EFI width code
- *
- * Someone at Intel clearly gets paid by the number of lines of code
- * they write. No-one should ever be able to make I/O this
- * convoluted. The EFI_CPU_IO_PROTOCOL_WIDTH enum is my favourite
- * idiocy.
- */
-static EFI_CPU_IO_PROTOCOL_WIDTH efi_width ( size_t size ) {
- switch ( size ) {
- case 1 : return EfiCpuIoWidthFifoUint8;
- case 2 : return EfiCpuIoWidthFifoUint16;
- case 4 : return EfiCpuIoWidthFifoUint32;
- case 8 : return EfiCpuIoWidthFifoUint64;
- default :
- assert ( 0 );
- /* I wonder what this will actually do... */
- return EfiCpuIoWidthMaximum;
- }
-}
-
-/**
- * Read from device
- *
- * @v io_addr I/O address
- * @v size Size of value
- * @ret data Value read
- */
-unsigned long long efi_ioread ( volatile void *io_addr, size_t size ) {
- EFI_CPU_IO_PROTOCOL_IO_MEM read;
- unsigned long long data = 0;
- EFI_STATUS efirc;
-
- read = ( IS_PORT_ADDRESS ( io_addr ) ?
- cpu_io->Io.Read : cpu_io->Mem.Read );
-
- if ( ( efirc = read ( cpu_io, efi_width ( size ),
- ( intptr_t ) io_addr, 1,
- ( void * ) &data ) ) != 0 ) {
- DBG ( "EFI I/O read at %p failed: %s\n",
- io_addr, efi_strerror ( efirc ) );
- return -1ULL;
- }
-
- return data;
-}
-
-/**
- * Write to device
- *
- * @v data Value to write
- * @v io_addr I/O address
- * @v size Size of value
- */
-void efi_iowrite ( unsigned long long data, volatile void *io_addr,
- size_t size ) {
- EFI_CPU_IO_PROTOCOL_IO_MEM write;
- EFI_STATUS efirc;
-
- write = ( IS_PORT_ADDRESS ( io_addr ) ?
- cpu_io->Io.Write : cpu_io->Mem.Write );
-
- if ( ( efirc = write ( cpu_io, efi_width ( size ),
- ( intptr_t ) io_addr, 1,
- ( void * ) &data ) ) != 0 ) {
- DBG ( "EFI I/O write at %p failed: %s\n",
- io_addr, efi_strerror ( efirc ) );
- }
-}
-
-/**
- * String read from device
- *
- * @v io_addr I/O address
- * @v data Data buffer
- * @v size Size of values
- * @v count Number of values to read
- */
-void efi_ioreads ( volatile void *io_addr, void *data,
- size_t size, unsigned int count ) {
- EFI_CPU_IO_PROTOCOL_IO_MEM read;
- EFI_STATUS efirc;
-
- read = ( IS_PORT_ADDRESS ( io_addr ) ?
- cpu_io->Io.Read : cpu_io->Mem.Read );
-
- if ( ( efirc = read ( cpu_io, efi_width ( size ),
- ( intptr_t ) io_addr, count,
- ( void * ) data ) ) != 0 ) {
- DBG ( "EFI I/O string read at %p failed: %s\n",
- io_addr, efi_strerror ( efirc ) );
- }
-}
-
-/**
- * String write to device
- *
- * @v io_addr I/O address
- * @v data Data buffer
- * @v size Size of values
- * @v count Number of values to write
- */
-void efi_iowrites ( volatile void *io_addr, const void *data,
- size_t size, unsigned int count ) {
- EFI_CPU_IO_PROTOCOL_IO_MEM write;
- EFI_STATUS efirc;
-
- write = ( IS_PORT_ADDRESS ( io_addr ) ?
- cpu_io->Io.Write : cpu_io->Mem.Write );
-
- if ( ( efirc = write ( cpu_io, efi_width ( size ),
- ( intptr_t ) io_addr, count,
- ( void * ) data ) ) != 0 ) {
- DBG ( "EFI I/O write at %p failed: %s\n",
- io_addr, efi_strerror ( efirc ) );
- }
-}
-
-/**
- * Wait for I/O-mapped operation to complete
- *
- */
-static void efi_iodelay ( void ) {
- /* Write to non-existent port. Probably x86-only. */
- outb ( 0, 0x80 );
-}
-
-/**
- * Get memory map
- *
- * Can't be done on EFI so return an empty map
- *
- * @v memmap Memory map to fill in
- */
-static void efi_get_memmap ( struct memory_map *memmap ) {
- memmap->count = 0;
-}
-
-PROVIDE_IOAPI_INLINE ( efi, phys_to_bus );
-PROVIDE_IOAPI_INLINE ( efi, bus_to_phys );
-PROVIDE_IOAPI_INLINE ( efi, ioremap );
-PROVIDE_IOAPI_INLINE ( efi, iounmap );
-PROVIDE_IOAPI_INLINE ( efi, io_to_bus );
-PROVIDE_IOAPI_INLINE ( efi, readb );
-PROVIDE_IOAPI_INLINE ( efi, readw );
-PROVIDE_IOAPI_INLINE ( efi, readl );
-PROVIDE_IOAPI_INLINE ( efi, readq );
-PROVIDE_IOAPI_INLINE ( efi, writeb );
-PROVIDE_IOAPI_INLINE ( efi, writew );
-PROVIDE_IOAPI_INLINE ( efi, writel );
-PROVIDE_IOAPI_INLINE ( efi, writeq );
-PROVIDE_IOAPI_INLINE ( efi, inb );
-PROVIDE_IOAPI_INLINE ( efi, inw );
-PROVIDE_IOAPI_INLINE ( efi, inl );
-PROVIDE_IOAPI_INLINE ( efi, outb );
-PROVIDE_IOAPI_INLINE ( efi, outw );
-PROVIDE_IOAPI_INLINE ( efi, outl );
-PROVIDE_IOAPI_INLINE ( efi, insb );
-PROVIDE_IOAPI_INLINE ( efi, insw );
-PROVIDE_IOAPI_INLINE ( efi, insl );
-PROVIDE_IOAPI_INLINE ( efi, outsb );
-PROVIDE_IOAPI_INLINE ( efi, outsw );
-PROVIDE_IOAPI_INLINE ( efi, outsl );
-PROVIDE_IOAPI ( efi, iodelay, efi_iodelay );
-PROVIDE_IOAPI_INLINE ( efi, mb );
-PROVIDE_IOAPI ( efi, get_memmap, efi_get_memmap );
projects / thirdparty / ipxe.git / commitdiff
