mirror of https://github.com/acidanthera/audk.git
450 lines
12 KiB
C
450 lines
12 KiB
C
/*++
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Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
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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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Private Data definition for Device IO driver
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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 DEVICE_IO_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('d', 'e', 'v', 'I')
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#define MAX_COMMON_BUFFER 0x00000000FFFFFFFF
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typedef struct {
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UINTN Signature;
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EFI_HANDLE Handle;
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EFI_DEVICE_IO_PROTOCOL DeviceIo;
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EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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UINT16 PrimaryBus;
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UINT16 SubordinateBus;
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} DEVICE_IO_PRIVATE_DATA;
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#define DEVICE_IO_PRIVATE_DATA_FROM_THIS(a) CR (a, DEVICE_IO_PRIVATE_DATA, DeviceIo, DEVICE_IO_PRIVATE_DATA_SIGNATURE)
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EFI_STATUS
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DeviceIoConstructor (
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IN EFI_HANDLE Handle,
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo,
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IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
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IN UINT16 PrimaryBus,
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IN UINT16 SubordinateBus
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)
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/*++
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Routine Description:
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Initialize and install a Device IO protocol on a empty device path handle.
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Arguments:
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Handle - Handle of PCI RootBridge IO instance
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PciRootBridgeIo - PCI RootBridge IO instance
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DevicePath - Device Path of PCI RootBridge IO instance
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PrimaryBus - Primary Bus
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SubordinateBus - Subordinate Bus
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Returns:
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EFI_SUCCESS - This driver is added to ControllerHandle.
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EFI_ALREADY_STARTED - This driver is already running on ControllerHandle.
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Others - This driver does not support this device.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoMemRead (
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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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/*++
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Routine Description:
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Perform reading memory mapped I/O space of device.
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Arguments:
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This - A pointer to EFI_DEVICE_IO protocol instance.
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Width - Width of I/O operations.
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Address - The base address of I/O operations.
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Count - The number of I/O operations to perform.
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Bytes moves is Width size * Count, starting at Address.
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Buffer - The destination buffer to store results.
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Returns:
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EFI_SUCCESS - The data was read from the device.
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EFI_INVALID_PARAMETER - Width is invalid.
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EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoMemWrite (
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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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/*++
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Routine Description:
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Perform writing memory mapped I/O space of device.
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Arguments:
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This - A pointer to EFI_DEVICE_IO protocol instance.
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Width - Width of I/O operations.
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Address - The base address of I/O operations.
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Count - The number of I/O operations to perform.
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Bytes moves is Width size * Count, starting at Address.
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Buffer - The source buffer of data to be written.
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Returns:
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EFI_SUCCESS - The data was written to the device.
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EFI_INVALID_PARAMETER - Width is invalid.
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EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoIoRead (
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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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/*++
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Routine Description:
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Perform reading I/O space of device.
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Arguments:
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This - A pointer to EFI_DEVICE_IO protocol instance.
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Width - Width of I/O operations.
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Address - The base address of I/O operations.
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Count - The number of I/O operations to perform.
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Bytes moves is Width size * Count, starting at Address.
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Buffer - The destination buffer to store results.
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Returns:
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EFI_SUCCESS - The data was read from the device.
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EFI_INVALID_PARAMETER - Width is invalid.
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EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoIoWrite (
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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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/*++
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Routine Description:
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Perform writing I/O space of device.
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Arguments:
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This - A pointer to EFI_DEVICE_IO protocol instance.
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Width - Width of I/O operations.
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Address - The base address of I/O operations.
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Count - The number of I/O operations to perform.
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Bytes moves is Width size * Count, starting at Address.
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Buffer - The source buffer of data to be written.
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Returns:
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EFI_SUCCESS - The data was written to the device.
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EFI_INVALID_PARAMETER - Width is invalid.
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EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoPciRead (
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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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/*++
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Routine Description:
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Perform reading PCI configuration space of device
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Arguments:
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This - A pointer to EFI_DEVICE_IO protocol instance.
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Width - Width of I/O operations.
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Address - The base address of I/O operations.
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Count - The number of I/O operations to perform.
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Bytes moves is Width size * Count, starting at Address.
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Buffer - The destination buffer to store results.
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Returns:
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EFI_SUCCESS - The data was read from the device.
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EFI_INVALID_PARAMETER - Width is invalid.
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EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoPciWrite (
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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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/*++
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Routine Description:
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Perform writing PCI configuration space of device.
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Arguments:
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This - A pointer to EFI_DEVICE_IO protocol instance.
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Width - Width of I/O operations.
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Address - The base address of I/O operations.
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Count - The number of I/O operations to perform.
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Bytes moves is Width size * Count, starting at Address.
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Buffer - The source buffer of data to be written.
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Returns:
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EFI_SUCCESS - The data was written to the device.
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EFI_INVALID_PARAMETER - Width is invalid.
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EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoPciDevicePath (
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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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/*++
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Routine Description:
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Append a PCI device path node to another device path.
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Arguments:
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This - A pointer to EFI_DEVICE_IO_PROTOCOL.
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Address - PCI bus,device, function.
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PciDevicePath - PCI device path.
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Returns:
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Pointer to the appended PCI device path.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoMap (
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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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/*++
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Routine Description:
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Provides the device-specific addresses needed to access system memory.
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Arguments:
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This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
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Operation - Indicates if the bus master is going to read or write to system memory.
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HostAddress - The system memory address to map to the device.
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NumberOfBytes - On input the number of bytes to map. On output the number of bytes
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that were mapped.
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DeviceAddress - The resulting map address for the bus master device to use to access the
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hosts HostAddress.
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Mapping - A resulting value to pass to Unmap().
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Returns:
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EFI_SUCCESS - The range was mapped for the returned NumberOfBytes.
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EFI_INVALID_PARAMETER - The Operation or HostAddress is undefined.
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EFI_UNSUPPORTED - The HostAddress cannot be mapped as a common buffer.
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EFI_DEVICE_ERROR - The system hardware could not map the requested address.
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EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of resources.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoUnmap (
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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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/*++
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Routine Description:
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Completes the Map() operation and releases any corresponding resources.
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Arguments:
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This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
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Mapping - The mapping value returned from Map().
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Returns:
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EFI_SUCCESS - The range was unmapped.
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EFI_DEVICE_ERROR - The data was not committed to the target system memory.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoAllocateBuffer (
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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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/*++
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Routine Description:
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Allocates pages that are suitable for an EFIBusMasterCommonBuffer mapping.
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Arguments:
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This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
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Type - The type allocation to perform.
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MemoryType - The type of memory to allocate, EfiBootServicesData or
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EfiRuntimeServicesData.
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Pages - The number of pages to allocate.
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HostAddress - A pointer to store the base address of the allocated range.
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Returns:
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EFI_SUCCESS - The requested memory pages were allocated.
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EFI_OUT_OF_RESOURCES - The memory pages could not be allocated.
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EFI_INVALID_PARAMETER - The requested memory type is invalid.
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EFI_UNSUPPORTED - The requested PhysicalAddress is not supported on
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this platform.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoFlush (
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IN EFI_DEVICE_IO_PROTOCOL *This
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)
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/*++
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Routine Description:
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Flushes any posted write data to the device.
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Arguments:
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This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
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Returns:
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EFI_SUCCESS - The buffers were flushed.
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EFI_DEVICE_ERROR - The buffers were not flushed due to a hardware error.
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--*/
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;
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EFI_STATUS
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EFIAPI
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DeviceIoFreeBuffer (
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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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/*++
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Routine Description:
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Frees pages that were allocated with AllocateBuffer().
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Arguments:
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This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
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Pages - The number of pages to free.
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HostAddress - The base address of the range to free.
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Returns:
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EFI_SUCCESS - The requested memory pages were freed.
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EFI_NOT_FOUND - The requested memory pages were not allocated with
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AllocateBuffer().
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EFI_INVALID_PARAMETER - HostAddress is not page aligned or Pages is invalid.
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--*/
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;
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#endif
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