diff options
Diffstat (limited to 'Chipset/eM/Ahci/AhciAccess.c')
| -rw-r--r-- | Chipset/eM/Ahci/AhciAccess.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/Chipset/eM/Ahci/AhciAccess.c b/Chipset/eM/Ahci/AhciAccess.c new file mode 100644 index 0000000..36ea264 --- /dev/null +++ b/Chipset/eM/Ahci/AhciAccess.c @@ -0,0 +1,252 @@ +//********************************************************************** +//********************************************************************** +//** ** +//** (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 ** +//** ** +//********************************************************************** +//**********************************************************************
\ No newline at end of file |