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//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
//**********************************************************************
// $Header: /Alaska/SOURCE/Modules/AHCI/AhciAccess.c 3 2/11/11 4:09a Rameshr $
//
// $Revision: 3 $
//
// $Date: 2/11/11 4:09a $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/AHCI/AhciAccess.c $
//
// 3 2/11/11 4:09a Rameshr
// [TAG] EIP53704
// [Category] Improvement
// [Description] AMI headers update for Alaska Ahci Driver
// [Files] AhciAccess.c
//
// 2 5/07/10 11:51a Krishnakumarg
// Update for coding standard.
//
// 1 5/28/08 9:49a Rameshraju
// Initial Check-in for Index/Data access method.
//
//**********************************************************************
//<AMI_FHDR_START>
//
// Name: AhciAccess.c
//
// Description: Provides Index Data Port Access to AHCI Controller
//
//<AMI_FHDR_END>
//**********************************************************************
//#include <AmiDxeLib.h>
#define LBAR_REGISTER 0x20
#define LBAR_ADDRESS_MASK 0xFFFFFFE0
#define INDEX_OFFSET_FROM_LBAR 0x10
#define DATA_OFFSET_FROM_LBAR 0x14
#include "AmiDxeLib.h"
#include "Protocol\PciIo.h"
UINT16 IndexPort, DataPort;
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Name: InitilizeIndexDataPortAddress
//
// Description: This is chipset porting routine that returns index/data ports
// to access memory-mapped registers.
//
// Input: PciIo
//
// Output: EFI_SUCCESS - Access information is collected
// EFI_ACCESS_DENIED - No Access information avaliable
//
//-------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS
InitilizeIndexDataPortAddress (
IN EFI_PCI_IO_PROTOCOL *PciIo
)
{
EFI_STATUS Status;
UINT32 lbar;
Status = PciIo->Pci.Read(PciIo, EfiPciIoWidthUint32, LBAR_REGISTER, 1, &lbar);
ASSERT_EFI_ERROR(Status);
lbar &= LBAR_ADDRESS_MASK; // Legacy Bus Master Base Address
IndexPort = (UINT16)lbar + INDEX_OFFSET_FROM_LBAR;
DataPort = (UINT16)lbar + DATA_OFFSET_FROM_LBAR;
return EFI_SUCCESS;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Name: ReadDataDword
//
// Description: Read the Dword Data using Index/Data access method
//
// Input: BaseAddress - BaseAddress of AHCI Controller
// Index - Index address to read
//
// Output: Value Read
//
//
//-------------------------------------------------------------------------
//<AMI_PHDR_END>
UINT32
ReadDataDword(
IN UINTN BaseAddr,
IN UINTN Index
)
{
IoWrite32(IndexPort, (UINT32)Index);
return IoRead32(DataPort);
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Name: WriteDataDword
//
// Description: WriteRead the Dword Data using Index/Data access method
//
// Input: BaseAddress - BaseAddress of AHCI Controller
// Index - Index address to Write
// Data - Data to be written
//
// Output: Nothing
//
//
//-------------------------------------------------------------------------
//<AMI_PHDR_END>
VOID
WriteDataDword(
IN UINTN BaseAddr,
IN UINTN Index,
IN UINTN Data
)
{
IoWrite32(IndexPort, (UINT32)Index);
IoWrite32(DataPort, (UINT32)Data);
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Name: ReadDataDword
//
// Description: Read the Word Data using Index/Data access method
//
// Input: BaseAddress - BaseAddress of AHCI Controller
// Index - Index address to read
//
// Output: Value Read
//
//
//-------------------------------------------------------------------------
//<AMI_PHDR_END>
UINT16
ReadDataWord(
IN UINTN BaseAddr,
IN UINTN Index
)
{
IoWrite32(IndexPort, (UINT32)Index);
return (UINT16)IoRead32(DataPort);
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Name: WriteDataDword
//
// Description: WriteRead the word Data using Index/Data access method
//
// Input: BaseAddress - BaseAddress of AHCI Controller
// Index - Index address to Write
// Data - Data to be written
//
// Output: Nothing
//
//
//-------------------------------------------------------------------------
//<AMI_PHDR_END>
VOID
WriteDataWord(
IN UINTN BaseAddr,
IN UINTN Index,
IN UINTN Data
)
{
IoWrite32(IndexPort, (UINT32)Index);
IoWrite32(DataPort, (UINT16)Data);
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Name: ReadDataDword
//
// Description: Read the Byte Data using Index/Data access method
//
// Input: BaseAddress - BaseAddress of AHCI Controller
// Index - Index address to read
//
// Output: Value Read
//
//
//-------------------------------------------------------------------------
//<AMI_PHDR_END>
UINT8
ReadDataByte(
IN UINTN BaseAddr,
IN UINTN Index
)
{
IoWrite32(IndexPort, (UINT32)Index);
return (UINT8)IoRead32(DataPort);
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Name: WriteDataByte
//
// Description: WriteRead the Dword Data using Index/Data access method
//
// Input: BaseAddress - BaseAddress of AHCI Controller
// Index - Index address to Write
// Data - Data to be written
//
// Output: Nothing
//
//
//-------------------------------------------------------------------------
//<AMI_PHDR_END>
VOID
WriteDataByte(
IN UINTN BaseAddr,
IN UINTN Index,
IN UINTN Data
)
{
IoWrite32(IndexPort, (UINT32)Index);
IoWrite8(DataPort, (UINT8)Data);
}
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
|
