diff options
Diffstat (limited to 'Chipset/eM/Ahci/AInt13Csp.c')
| -rw-r--r-- | Chipset/eM/Ahci/AInt13Csp.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/Chipset/eM/Ahci/AInt13Csp.c b/Chipset/eM/Ahci/AInt13Csp.c new file mode 100644 index 0000000..44365ba --- /dev/null +++ b/Chipset/eM/Ahci/AInt13Csp.c @@ -0,0 +1,111 @@ +//********************************************************************** +//********************************************************************** +//** ** +//** (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 ** +//** ** +//********************************************************************** +//********************************************************************** |