#include "EmmcBlockIoPei.h"

Functions
EFI_STATUS EFIAPI	EmmcBlockIoPeimGetDeviceNo (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO_PPI This, OUT UINTN *NumberBlockDevices)

EFI_STATUS EFIAPI	EmmcBlockIoPeimGetMediaInfo (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO_PPI This, IN UINTN DeviceIndex, OUT EFI_PEI_BLOCK_IO_MEDIA *MediaInfo)

EFI_STATUS EFIAPI	EmmcBlockIoPeimReadBlocks (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO_PPI This, IN UINTN DeviceIndex, IN EFI_PEI_LBA StartLBA, IN UINTN BufferSize, OUT VOID *Buffer)

EFI_STATUS EFIAPI	EmmcBlockIoPeimGetDeviceNo2 (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI This, OUT UINTN *NumberBlockDevices)

EFI_STATUS EFIAPI	EmmcBlockIoPeimGetMediaInfo2 (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI This, IN UINTN DeviceIndex, OUT EFI_PEI_BLOCK_IO2_MEDIA *MediaInfo)

EFI_STATUS EFIAPI	EmmcBlockIoPeimReadBlocks2 (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI This, IN UINTN DeviceIndex, IN EFI_PEI_LBA StartLBA, IN UINTN BufferSize, OUT VOID *Buffer)

EFI_STATUS EFIAPI	EmmcBlockIoPeimEndOfPei (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_NOTIFY_DESCRIPTOR NotifyDescriptor, IN VOID *Ppi)

EFI_STATUS EFIAPI	InitializeEmmcBlockIoPeim (IN EFI_PEI_FILE_HANDLE FileHandle, IN CONST EFI_PEI_SERVICES **PeiServices)

Variables
EMMC_PEIM_HC_SLOT	gEmmcHcSlotTemplate

EMMC_PEIM_HC_PRIVATE_DATA	gEmmcHcPrivateTemplate

Detailed Description

Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file EmmcBlockIoPei.c.

Function Documentation

◆ EmmcBlockIoPeimEndOfPei()

EFI_STATUS EFIAPI EmmcBlockIoPeimEndOfPei	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_NOTIFY_DESCRIPTOR *	NotifyDescriptor,
		IN VOID *	Ppi
	)

One notified function to cleanup the allocated DMA buffers at the end of PEI.

Parameters

[in]	PeiServices	Pointer to PEI Services Table.
[in]	NotifyDescriptor	Pointer to the descriptor for the Notification event that caused this function to execute.
[in]	Ppi	Pointer to the PPI data associated with this function.

Return values

EFI_SUCCESS The function completes successfully

Definition at line 640 of file EmmcBlockIoPei.c.

◆ EmmcBlockIoPeimGetDeviceNo()

EFI_STATUS EFIAPI EmmcBlockIoPeimGetDeviceNo	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO_PPI *	This,
		OUT UINTN *	NumberBlockDevices
	)

Gets the count of block I/O devices that one specific block driver detects.

This function is used for getting the count of block I/O devices that one specific block driver detects. To the PEI ATAPI driver, it returns the number of all the detected ATAPI devices it detects during the enumeration process. To the PEI legacy floppy driver, it returns the number of all the legacy devices it finds during its enumeration process. If no device is detected, then the function will return zero.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM.
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI instance.
[out]	NumberBlockDevices	The number of block I/O devices discovered.

Return values

EFI_SUCCESS The operation performed successfully.

Definition at line 183 of file EmmcBlockIoPei.c.

◆ EmmcBlockIoPeimGetDeviceNo2()

EFI_STATUS EFIAPI EmmcBlockIoPeimGetDeviceNo2	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI *	This,
		OUT UINTN *	NumberBlockDevices
	)

Gets the count of block I/O devices that one specific block driver detects.

This function is used for getting the count of block I/O devices that one specific block driver detects. To the PEI ATAPI driver, it returns the number of all the detected ATAPI devices it detects during the enumeration process. To the PEI legacy floppy driver, it returns the number of all the legacy devices it finds during its enumeration process. If no device is detected, then the function will return zero.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM.
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO2_PPI instance.
[out]	NumberBlockDevices	The number of block I/O devices discovered.

Return values

EFI_SUCCESS The operation performed successfully.

Definition at line 460 of file EmmcBlockIoPei.c.

◆ EmmcBlockIoPeimGetMediaInfo()

EFI_STATUS EFIAPI EmmcBlockIoPeimGetMediaInfo	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO_PPI *	This,
		IN UINTN	DeviceIndex,
		OUT EFI_PEI_BLOCK_IO_MEDIA *	MediaInfo
	)

Gets a block device's media information.

This function will provide the caller with the specified block device's media information. If the media changes, calling this function will update the media information accordingly.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI instance.
[in]	DeviceIndex	Specifies the block device to which the function wants to talk. Because the driver that implements Block I/O PPIs will manage multiple block devices, the PPIs that want to talk to a single device must specify the device index that was assigned during the enumeration process. This index is a number from one to NumberBlockDevices.
[out]	MediaInfo	The media information of the specified block media. The caller is responsible for the ownership of this data structure.

Note:: The MediaInfo structure describes an enumeration of possible block device types. This enumeration exists because no device paths are actually passed across interfaces that describe the type or class of hardware that is publishing the block I/O interface. This enumeration will allow for policy decisions in the Recovery PEIM, such as "Try to recover from legacy floppy first, LS-120 second, CD-ROM third." If there are multiple partitions abstracted by a given device type, they should be reported in ascending order; this order also applies to nested partitions, such as legacy MBR, where the outermost partitions would have precedence in the reporting order. The same logic applies to systems such as IDE that have precedence relationships like "Master/Slave" or "Primary/Secondary". The master device should be reported first, the slave second.

Return values

EFI_SUCCESS	Media information about the specified block device was obtained successfully.
EFI_DEVICE_ERROR	Cannot get the media information due to a hardware error.

Definition at line 239 of file EmmcBlockIoPei.c.

◆ EmmcBlockIoPeimGetMediaInfo2()

EFI_STATUS EFIAPI EmmcBlockIoPeimGetMediaInfo2	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI *	This,
		IN UINTN	DeviceIndex,
		OUT EFI_PEI_BLOCK_IO2_MEDIA *	MediaInfo
	)

Gets a block device's media information.

This function will provide the caller with the specified block device's media information. If the media changes, calling this function will update the media information accordingly.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO2_PPI instance.
[in]	DeviceIndex	Specifies the block device to which the function wants to talk. Because the driver that implements Block I/O PPIs will manage multiple block devices, the PPIs that want to talk to a single device must specify the device index that was assigned during the enumeration process. This index is a number from one to NumberBlockDevices.
[out]	MediaInfo	The media information of the specified block media. The caller is responsible for the ownership of this data structure.

Note:: The MediaInfo structure describes an enumeration of possible block device types. This enumeration exists because no device paths are actually passed across interfaces that describe the type or class of hardware that is publishing the block I/O interface. This enumeration will allow for policy decisions in the Recovery PEIM, such as "Try to recover from legacy floppy first, LS-120 second, CD-ROM third." If there are multiple partitions abstracted by a given device type, they should be reported in ascending order; this order also applies to nested partitions, such as legacy MBR, where the outermost partitions would have precedence in the reporting order. The same logic applies to systems such as IDE that have precedence relationships like "Master/Slave" or "Primary/Secondary". The master device should be reported first, the slave second.

Return values

EFI_SUCCESS	Media information about the specified block device was obtained successfully.
EFI_DEVICE_ERROR	Cannot get the media information due to a hardware error.

Definition at line 517 of file EmmcBlockIoPei.c.

◆ EmmcBlockIoPeimReadBlocks()

EFI_STATUS EFIAPI EmmcBlockIoPeimReadBlocks	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO_PPI *	This,
		IN UINTN	DeviceIndex,
		IN EFI_PEI_LBA	StartLBA,
		IN UINTN	BufferSize,
		OUT VOID *	Buffer
	)

Reads the requested number of blocks from the specified block device.

The function reads the requested number of blocks from the device. All the blocks are read, or an error is returned. If there is no media in the device, the function returns EFI_NO_MEDIA.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM.
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI instance.
[in]	DeviceIndex	Specifies the block device to which the function wants to talk. Because the driver that implements Block I/O PPIs will manage multiple block devices, PPIs that want to talk to a single device must specify the device index that was assigned during the enumeration process. This index is a number from one to NumberBlockDevices.
[in]	StartLBA	The starting logical block address (LBA) to read from on the device
[in]	BufferSize	The size of the Buffer in bytes. This number must be a multiple of the intrinsic block size of the device.
[out]	Buffer	A pointer to the destination buffer for the data. The caller is responsible for the ownership of the buffer.

Return values

EFI_SUCCESS	The data was read correctly from the device.
EFI_DEVICE_ERROR	The device reported an error while attempting to perform the read operation.
EFI_INVALID_PARAMETER	The read request contains LBAs that are not valid, or the buffer is not properly aligned.
EFI_NO_MEDIA	There is no media in the device.
EFI_BAD_BUFFER_SIZE	The BufferSize parameter is not a multiple of the intrinsic block size of the device.

Definition at line 319 of file EmmcBlockIoPei.c.

◆ EmmcBlockIoPeimReadBlocks2()

EFI_STATUS EFIAPI EmmcBlockIoPeimReadBlocks2	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI *	This,
		IN UINTN	DeviceIndex,
		IN EFI_PEI_LBA	StartLBA,
		IN UINTN	BufferSize,
		OUT VOID *	Buffer
	)

Reads the requested number of blocks from the specified block device.

The function reads the requested number of blocks from the device. All the blocks are read, or an error is returned. If there is no media in the device, the function returns EFI_NO_MEDIA.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM.
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO2_PPI instance.
[in]	DeviceIndex	Specifies the block device to which the function wants to talk. Because the driver that implements Block I/O PPIs will manage multiple block devices, PPIs that want to talk to a single device must specify the device index that was assigned during the enumeration process. This index is a number from one to NumberBlockDevices.
[in]	StartLBA	The starting logical block address (LBA) to read from on the device
[in]	BufferSize	The size of the Buffer in bytes. This number must be a multiple of the intrinsic block size of the device.
[out]	Buffer	A pointer to the destination buffer for the data. The caller is responsible for the ownership of the buffer.

Return values

EFI_SUCCESS	The data was read correctly from the device.
EFI_DEVICE_ERROR	The device reported an error while attempting to perform the read operation.
EFI_INVALID_PARAMETER	The read request contains LBAs that are not valid, or the buffer is not properly aligned.
EFI_NO_MEDIA	There is no media in the device.
EFI_BAD_BUFFER_SIZE	The BufferSize parameter is not a multiple of the intrinsic block size of the device.

Definition at line 601 of file EmmcBlockIoPei.c.

◆ InitializeEmmcBlockIoPeim()

EFI_STATUS EFIAPI InitializeEmmcBlockIoPeim	(	IN EFI_PEI_FILE_HANDLE	FileHandle,
		IN CONST EFI_PEI_SERVICES **	PeiServices
	)

The user code starts with this function.

Parameters

FileHandle	Handle of the file being invoked.
PeiServices	Describes the list of possible PEI Services.

Return values

EFI_SUCCESS	The driver is successfully initialized.
Others	Can't initialize the driver.

Definition at line 669 of file EmmcBlockIoPei.c.

Variable Documentation

◆ gEmmcHcPrivateTemplate

EMMC_PEIM_HC_PRIVATE_DATA gEmmcHcPrivateTemplate

Definition at line 109 of file EmmcBlockIoPei.c.

◆ gEmmcHcSlotTemplate

EMMC_PEIM_HC_SLOT gEmmcHcSlotTemplate

Definition at line 13 of file EmmcBlockIoPei.c.

Functions

Variables

Detailed Description

Function Documentation

◆ EmmcBlockIoPeimEndOfPei()

◆ EmmcBlockIoPeimGetDeviceNo()

◆ EmmcBlockIoPeimGetDeviceNo2()

◆ EmmcBlockIoPeimGetMediaInfo()

◆ EmmcBlockIoPeimGetMediaInfo2()

◆ EmmcBlockIoPeimReadBlocks()

◆ EmmcBlockIoPeimReadBlocks2()

◆ InitializeEmmcBlockIoPeim()

Variable Documentation

◆ gEmmcHcPrivateTemplate

◆ gEmmcHcSlotTemplate