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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/INT13/CSP/AInt13Csp.c 3 2/10/11 10:52a Rameshr $
//
// $Revision: 3 $
//
// $Date: 2/10/11 10:52a $
//
//****************************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/AHCI/INT13/CSP/AInt13Csp.c $
//
// 3 2/10/11 10:52a Rameshr
// [TAG] EIP53704
// [Category] Improvement
// [Description] AMI headers update for Alaska Ahci Driver
// [Files] AHCIACC.ASM
// HACCESS.EQU
// AHCI.EQU
// AINT13.EQU
// AInt13Csp.c
//
// 2 5/28/08 9:44a Rameshraju
// Updated the AMI Address.
//
// 1 12/07/07 11:17a Olegi
//
//****************************************************************************
//<AMI_FHDR_START>
//----------------------------------------------------------------------------
//
// Name: AINT13CSP.C
// Description: AHCI INT13 Support Chipset Configuration File
//
//----------------------------------------------------------------------------
//<AMI_FHDR_END>
#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"
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Name: GetAccessInfo
//
// 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
GetAccessInfo (
IN EFI_PCI_IO_PROTOCOL *PciIo,
OUT UINT16 *AccessIndexPort,
OUT UINT16 *AccessDataPort
)
{
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
*AccessIndexPort = (UINT16)lbar + INDEX_OFFSET_FROM_LBAR;
*AccessDataPort = (UINT16)lbar + DATA_OFFSET_FROM_LBAR;
return EFI_SUCCESS;
}
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
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