Rename Framework SmbusLib instance
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3329 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
99
IntelFrameworkPkg/Library/PeiSmbusLibSmbusPpi/PeiSmbusLib.c
Normal file
99
IntelFrameworkPkg/Library/PeiSmbusLibSmbusPpi/PeiSmbusLib.c
Normal file
@@ -0,0 +1,99 @@
|
||||
/** @file
|
||||
Implementation of SmBusLib class library for PEI phase.
|
||||
|
||||
Copyright (c) 2006, Intel Corporation<BR>
|
||||
All rights reserved. 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.
|
||||
|
||||
|
||||
Module Name: PeiSmbusLib.c
|
||||
|
||||
**/
|
||||
|
||||
#include "InternalSmbusLib.h"
|
||||
|
||||
/**
|
||||
Gets Smbus PPIs.
|
||||
|
||||
This internal function retrieves Smbus PPI from PPI database.
|
||||
|
||||
@param PeiServices An indirect pointer to the EFI_PEI_SERVICES published by the PEI Foundation.
|
||||
|
||||
@return The pointer to Smbus PPI.
|
||||
|
||||
**/
|
||||
EFI_PEI_SMBUS_PPI *
|
||||
InternalGetSmbusPpi (
|
||||
EFI_PEI_SERVICES **PeiServices
|
||||
)
|
||||
{
|
||||
EFI_STATUS Status;
|
||||
EFI_PEI_SMBUS_PPI *SmbusPpi;
|
||||
|
||||
Status = (*PeiServices)->LocatePpi (PeiServices, &gEfiPeiSmbusPpiGuid, 0, NULL, (VOID **) &SmbusPpi);
|
||||
ASSERT_EFI_ERROR (Status);
|
||||
ASSERT (SmbusPpi != NULL);
|
||||
|
||||
return SmbusPpi;
|
||||
}
|
||||
|
||||
/**
|
||||
Executes an SMBus operation to an SMBus controller.
|
||||
|
||||
This function provides a standard way to execute Smbus script
|
||||
as defined in the SmBus Specification. The data can either be of
|
||||
the Length byte, word, or a block of data.
|
||||
|
||||
@param SmbusOperation Signifies which particular SMBus hardware protocol instance that it will use to
|
||||
execute the SMBus transactions.
|
||||
@param SmBusAddress Address that encodes the SMBUS Slave Address,
|
||||
SMBUS Command, SMBUS Data Length, and PEC.
|
||||
@param Length Signifies the number of bytes that this operation will do. The maximum number of
|
||||
bytes can be revision specific and operation specific.
|
||||
@param Buffer Contains the value of data to execute to the SMBus slave device. Not all operations
|
||||
require this argument. The length of this buffer is identified by Length.
|
||||
@param Status Return status for the executed command.
|
||||
This is an optional parameter and may be NULL.
|
||||
|
||||
@return The actual number of bytes that are executed for this operation..
|
||||
|
||||
**/
|
||||
UINTN
|
||||
InternalSmBusExec (
|
||||
IN EFI_SMBUS_OPERATION SmbusOperation,
|
||||
IN UINTN SmBusAddress,
|
||||
IN UINTN Length,
|
||||
IN OUT VOID *Buffer,
|
||||
OUT RETURN_STATUS *Status OPTIONAL
|
||||
)
|
||||
{
|
||||
EFI_PEI_SMBUS_PPI *SmbusPpi;
|
||||
EFI_PEI_SERVICES **PeiServices;
|
||||
RETURN_STATUS ReturnStatus;
|
||||
EFI_SMBUS_DEVICE_ADDRESS SmbusDeviceAddress;
|
||||
|
||||
PeiServices = GetPeiServicesTablePointer ();
|
||||
SmbusPpi = InternalGetSmbusPpi (PeiServices);
|
||||
SmbusDeviceAddress.SmbusDeviceAddress = SMBUS_LIB_SLAVE_ADDRESS (SmBusAddress);
|
||||
|
||||
ReturnStatus = SmbusPpi->Execute (
|
||||
PeiServices,
|
||||
SmbusPpi,
|
||||
SmbusDeviceAddress,
|
||||
SMBUS_LIB_COMMAND (SmBusAddress),
|
||||
SmbusOperation,
|
||||
SMBUS_LIB_PEC (SmBusAddress),
|
||||
&Length,
|
||||
Buffer
|
||||
);
|
||||
if (Status != NULL) {
|
||||
*Status = ReturnStatus;
|
||||
}
|
||||
|
||||
return Length;
|
||||
}
|
Reference in New Issue
Block a user