mirror of https://github.com/acidanthera/audk.git
133 lines
3.5 KiB
C
133 lines
3.5 KiB
C
/*++
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Copyright (c) 2004, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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DeviceIo.h
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Abstract:
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Device IO protocol as defined in the EFI 1.0 specification.
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Device IO is used to abstract hardware access to devices. It includes
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memory mapped IO, IO, PCI Config space, and DMA.
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--*/
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#ifndef _DEVICE_IO_H_
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#define _DEVICE_IO_H_
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#define EFI_DEVICE_IO_PROTOCOL_GUID \
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{ \
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0xaf6ac311, 0x84c3, 0x11d2, {0x8e, 0x3c, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b} \
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}
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EFI_FORWARD_DECLARATION (EFI_DEVICE_IO_PROTOCOL);
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typedef enum {
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IO_UINT8,
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IO_UINT16,
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IO_UINT32,
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IO_UINT64,
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MMIO_COPY_UINT8,
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MMIO_COPY_UINT16,
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MMIO_COPY_UINT32,
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MMIO_COPY_UINT64
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} EFI_IO_WIDTH;
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DEVICE_IO) (
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IN EFI_DEVICE_IO_PROTOCOL * This,
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IN EFI_IO_WIDTH Width,
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IN UINT64 Address,
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IN UINTN Count,
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IN OUT VOID *Buffer
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);
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typedef struct {
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EFI_DEVICE_IO Read;
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EFI_DEVICE_IO Write;
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} EFI_IO_ACCESS;
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_DEVICE_PATH) (
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IN EFI_DEVICE_IO_PROTOCOL * This,
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IN UINT64 Address,
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IN OUT EFI_DEVICE_PATH_PROTOCOL **PciDevicePath
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);
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typedef enum {
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EfiBusMasterRead,
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EfiBusMasterWrite,
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EfiBusMasterCommonBuffer
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} EFI_IO_OPERATION_TYPE;
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typedef
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EFI_STATUS
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(EFIAPI *EFI_IO_MAP) (
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IN EFI_DEVICE_IO_PROTOCOL * This,
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IN EFI_IO_OPERATION_TYPE Operation,
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IN EFI_PHYSICAL_ADDRESS * HostAddress,
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IN OUT UINTN *NumberOfBytes,
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OUT EFI_PHYSICAL_ADDRESS * DeviceAddress,
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OUT VOID **Mapping
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);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_IO_UNMAP) (
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IN EFI_DEVICE_IO_PROTOCOL * This,
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IN VOID *Mapping
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);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_IO_ALLOCATE_BUFFER) (
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IN EFI_DEVICE_IO_PROTOCOL * This,
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IN EFI_ALLOCATE_TYPE Type,
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN Pages,
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IN OUT EFI_PHYSICAL_ADDRESS * HostAddress
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);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_IO_FLUSH) (
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IN EFI_DEVICE_IO_PROTOCOL * This
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);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_IO_FREE_BUFFER) (
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IN EFI_DEVICE_IO_PROTOCOL * This,
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IN UINTN Pages,
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IN EFI_PHYSICAL_ADDRESS HostAddress
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);
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struct _EFI_DEVICE_IO_PROTOCOL {
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EFI_IO_ACCESS Mem;
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EFI_IO_ACCESS Io;
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EFI_IO_ACCESS Pci;
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EFI_IO_MAP Map;
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EFI_PCI_DEVICE_PATH PciDevicePath;
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EFI_IO_UNMAP Unmap;
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EFI_IO_ALLOCATE_BUFFER AllocateBuffer;
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EFI_IO_FLUSH Flush;
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EFI_IO_FREE_BUFFER FreeBuffer;
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};
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extern EFI_GUID gEfiDeviceIoProtocolGuid;
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#endif
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