mirror of https://github.com/acidanthera/audk.git
347 lines
15 KiB
C
347 lines
15 KiB
C
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/** @file
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Definitions of functions for Driver Binding Protocol and Block I/O Protocol,
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and other internal definitions.
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Copyright (c) 2007 - 2010, 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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**/
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#ifndef _EFI_BLOCK_MMIO_TO_BLOCK_IO_H_
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#define _EFI_BLOCK_MMIO_TO_BLOCK_IO_H_
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#include <Uefi.h>
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#include <Protocol/BlockMmio.h>
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#include <Protocol/ComponentName.h>
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#include <Protocol/ComponentName2.h>
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#include <Protocol/CpuIo2.h>
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#include <Protocol/DevicePath.h>
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#include <Protocol/DriverBinding.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiLib.h>
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#define BLOCK_MMIO_TO_BLOCK_IO_SIGNATURE SIGNATURE_32 ('B', 'M', 'I', 'O')
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#define PRIVATE_FROM_BLOCK_IO(a) \
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CR (a, BLOCK_MMIO_TO_BLOCK_IO_DEVICE, BlockIo, BLOCK_MMIO_TO_BLOCK_IO_SIGNATURE)
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extern EFI_COMPONENT_NAME_PROTOCOL gBlockMmioToBlockIoComponentName;
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extern EFI_COMPONENT_NAME2_PROTOCOL gBlockMmioToBlockIoComponentName2;
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typedef struct {
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UINT32 Signature;
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EFI_HANDLE Controller;
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BLOCK_MMIO_PROTOCOL *BlockMmio;
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EFI_CPU_IO2_PROTOCOL *CpuIo;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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EFI_BLOCK_IO_PROTOCOL BlockIo;
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} BLOCK_MMIO_TO_BLOCK_IO_DEVICE;
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//
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// Functions for Driver Binding Protocol
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//
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/**
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Check whether the controller is a supported.
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@param This The driver binding protocol.
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@param Controller The controller handle to check.
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@param RemainingDevicePath The remaining device path.
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@retval EFI_SUCCESS The driver supports this controller.
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@retval other This device isn't supported.
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**/
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EFI_STATUS
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EFIAPI
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BlockIoDriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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);
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/**
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Starts the BlockIo device with this driver.
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This function consumes Block MMIO Portocol and
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installs Block I/O Protocol.
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@param This The driver binding protocol.
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@param Controller The Block MMIO device to start on
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@param RemainingDevicePath The remaining device path.
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@retval EFI_SUCCESS This driver supports this device.
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@retval EFI_UNSUPPORTED This driver does not support this device.
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@retval EFI_DEVICE_ERROR This driver cannot be started due to device Error.
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@retval EFI_OUT_OF_RESOURCES Can't allocate memory resources.
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@retval EFI_ALREADY_STARTED This driver has been started.
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**/
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EFI_STATUS
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EFIAPI
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BlockIoDriverBindingStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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);
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/**
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Stop controlling the device.
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@param This The driver binding
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@param Controller The device controller controlled by the driver.
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@param NumberOfChildren The number of children of this device
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@param ChildHandleBuffer The buffer of children handle.
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@retval EFI_SUCCESS The driver stopped from controlling the device.
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@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
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@retval EFI_UNSUPPORTED Block I/O Protocol is not installed on Controller.
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@retval Others Failed to stop the driver
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**/
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EFI_STATUS
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EFIAPI
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BlockIoDriverBindingStop (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer
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);
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//
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// Functions for Block I/O Protocol
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//
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/**
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Reset the block device.
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This function implements EFI_BLOCK_IO_PROTOCOL.Reset().
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It resets the block device hardware.
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ExtendedVerification is ignored in this implementation.
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@param This Indicates a pointer to the calling context.
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@param ExtendedVerification Indicates that the driver may perform a more exhaustive
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verification operation of the device during reset.
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@retval EFI_SUCCESS The block device was reset.
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@retval EFI_DEVICE_ERROR The block device is not functioning correctly and could not be reset.
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**/
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EFI_STATUS
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EFIAPI
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BlockIoReset (
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IN EFI_BLOCK_IO_PROTOCOL *This,
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IN BOOLEAN ExtendedVerification
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);
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/**
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Reads the requested number of blocks from the device.
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This function implements EFI_BLOCK_IO_PROTOCOL.ReadBlocks().
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It reads the requested number of blocks from the device.
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All the blocks are read, or an error is returned.
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@param This Indicates a pointer to the calling context.
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@param MediaId The media ID that the read request is for.
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@param Lba The starting logical block address to read from on the device.
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@param BufferSize The size of the Buffer in bytes.
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This must be a multiple of the intrinsic block size of the device.
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@param Buffer A pointer to the destination buffer for the data. The caller is
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responsible for either having implicit or explicit ownership of the buffer.
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@retval EFI_SUCCESS The data was read correctly from the device.
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@retval EFI_DEVICE_ERROR The device reported an error while attempting to perform the read operation.
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@retval EFI_NO_MEDIA There is no media in the device.
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@retval EFI_MEDIA_CHANGED The MediaId is not for the current media.
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@retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of the intrinsic block size of the device.
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@retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,
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or the buffer is not on proper alignment.
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**/
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EFI_STATUS
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EFIAPI
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BlockIoReadBlocks (
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IN EFI_BLOCK_IO_PROTOCOL *This,
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IN UINT32 MediaId,
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IN EFI_LBA Lba,
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IN UINTN BufferSize,
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OUT VOID *Buffer
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);
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/**
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Writes a specified number of blocks to the device.
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This function implements EFI_BLOCK_IO_PROTOCOL.WriteBlocks().
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It writes a specified number of blocks to the device.
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All blocks are written, or an error is returned.
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@param This Indicates a pointer to the calling context.
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@param MediaId The media ID that the write request is for.
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@param Lba The starting logical block address to be written.
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@param BufferSize The size of the Buffer in bytes.
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This must be a multiple of the intrinsic block size of the device.
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@param Buffer Pointer to the source buffer for the data.
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@retval EFI_SUCCESS The data were written correctly to the device.
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@retval EFI_WRITE_PROTECTED The device cannot be written to.
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@retval EFI_NO_MEDIA There is no media in the device.
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@retval EFI_MEDIA_CHANGED The MediaId is not for the current media.
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@retval EFI_DEVICE_ERROR The device reported an error while attempting to perform the write operation.
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@retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of the intrinsic
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block size of the device.
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@retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,
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or the buffer is not on proper alignment.
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**/
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EFI_STATUS
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EFIAPI
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BlockIoWriteBlocks (
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IN EFI_BLOCK_IO_PROTOCOL *This,
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IN UINT32 MediaId,
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IN EFI_LBA Lba,
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IN UINTN BufferSize,
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IN VOID *Buffer
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);
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/**
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Flushes all modified data to a physical block device.
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@param This Indicates a pointer to the calling context.
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@retval EFI_SUCCESS All outstanding data were written correctly to the device.
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@retval EFI_DEVICE_ERROR The device reported an error while attempting to write data.
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@retval EFI_NO_MEDIA There is no media in the device.
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**/
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EFI_STATUS
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EFIAPI
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BlockIoFlushBlocks (
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IN EFI_BLOCK_IO_PROTOCOL *This
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);
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//
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// EFI Component Name Functions
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//
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/**
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Retrieves a Unicode string that is the user readable name of the driver.
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This function retrieves the user readable name of a driver in the form of a
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Unicode string. If the driver specified by This has a user readable name in
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the language specified by Language, then a pointer to the driver name is
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returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
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by This does not support the language specified by Language,
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then EFI_UNSUPPORTED is returned.
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@param This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
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EFI_COMPONENT_NAME_PROTOCOL instance.
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@param Language A pointer to a Null-terminated ASCII string
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array indicating the language. This is the
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language of the driver name that the caller is
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requesting, and it must match one of the
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languages specified in SupportedLanguages. The
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number of languages supported by a driver is up
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to the driver writer. Language is specified
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in RFC 4646 or ISO 639-2 language code format.
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@param DriverName A pointer to the Unicode string to return.
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This Unicode string is the name of the
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driver specified by This in the language
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specified by Language.
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@retval EFI_SUCCESS The Unicode string for the Driver specified by
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This and the language specified by Language was
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returned in DriverName.
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@retval EFI_INVALID_PARAMETER Language is NULL.
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@retval EFI_INVALID_PARAMETER DriverName is NULL.
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@retval EFI_UNSUPPORTED The driver specified by This does not support
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the language specified by Language.
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**/
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EFI_STATUS
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EFIAPI
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BlockMmioToBlockIoGetDriverName (
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IN EFI_COMPONENT_NAME_PROTOCOL *This,
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IN CHAR8 *Language,
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OUT CHAR16 **DriverName
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);
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/**
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Retrieves a Unicode string that is the user readable name of the controller
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that is being managed by a driver.
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This function retrieves the user readable name of the controller specified by
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ControllerHandle and ChildHandle in the form of a Unicode string. If the
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driver specified by This has a user readable name in the language specified by
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Language, then a pointer to the controller name is returned in ControllerName,
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and EFI_SUCCESS is returned. If the driver specified by This is not currently
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managing the controller specified by ControllerHandle and ChildHandle,
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then EFI_UNSUPPORTED is returned. If the driver specified by This does not
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support the language specified by Language, then EFI_UNSUPPORTED is returned.
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@param This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
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EFI_COMPONENT_NAME_PROTOCOL instance.
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@param ControllerHandle The handle of a controller that the driver
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specified by This is managing. This handle
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specifies the controller whose name is to be
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returned.
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@param ChildHandle The handle of the child controller to retrieve
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the name of. This is an optional parameter that
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may be NULL. It will be NULL for device
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drivers. It will also be NULL for a bus drivers
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that wish to retrieve the name of the bus
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controller. It will not be NULL for a bus
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driver that wishes to retrieve the name of a
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child controller.
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@param Language A pointer to a Null-terminated ASCII string
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array indicating the language. This is the
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language of the driver name that the caller is
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requesting, and it must match one of the
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languages specified in SupportedLanguages. The
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number of languages supported by a driver is up
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to the driver writer. Language is specified in
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RFC 4646 or ISO 639-2 language code format.
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@param ControllerName A pointer to the Unicode string to return.
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This Unicode string is the name of the
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controller specified by ControllerHandle and
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ChildHandle in the language specified by
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Language from the point of view of the driver
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specified by This.
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@retval EFI_SUCCESS The Unicode string for the user readable name in
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the language specified by Language for the
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driver specified by This was returned in
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DriverName.
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@retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
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@retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
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EFI_HANDLE.
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@retval EFI_INVALID_PARAMETER Language is NULL.
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@retval EFI_INVALID_PARAMETER ControllerName is NULL.
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@retval EFI_UNSUPPORTED The driver specified by This is not currently
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managing the controller specified by
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ControllerHandle and ChildHandle.
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@retval EFI_UNSUPPORTED The driver specified by This does not support
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the language specified by Language.
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**/
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EFI_STATUS
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EFIAPI
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BlockMmioToBlockIoGetControllerName (
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IN EFI_COMPONENT_NAME_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_HANDLE ChildHandle OPTIONAL,
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IN CHAR8 *Language,
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OUT CHAR16 **ControllerName
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);
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#endif
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