+++ /dev/null
-/*++
-
-Copyright (c) 2005 - 2012, Intel Corporation. All rights reserved.<BR>
-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:
- PcatPciRootBridgeIo.c
-
-Abstract:
-
- EFI PC AT PCI Root Bridge Io Protocol
-
-Revision History
-
---*/
-
-#include "PcatPciRootBridge.h"
-#include <IndustryStandard/Pci.h>
-#include "SalProc.h"
-
-#include EFI_GUID_DEFINITION (SalSystemTable)
-
-//
-// Might be good to put this in an include file, but people may start
-// using it! They should always access the EFI abstraction that is
-// contained in this file. Just a little information hiding.
-//
-#define PORT_TO_MEM(_Port) ( ((_Port) & 0xffffffffffff0000) | (((_Port) & 0xfffc) << 10) | ((_Port) & 0x0fff) )
-
-//
-// Macro's with casts make this much easier to use and read.
-//
-#define PORT_TO_MEM8(_Port) (*(UINT8 *)(PORT_TO_MEM(_Port)))
-#define PORT_TO_MEM16(_Port) (*(UINT16 *)(PORT_TO_MEM(_Port)))
-#define PORT_TO_MEM32(_Port) (*(UINT32 *)(PORT_TO_MEM(_Port)))
-
-#define EFI_PCI_ADDRESS_IA64(_seg, _bus,_dev,_func,_reg) \
- ( (UINT64) ( (((UINTN)_seg) << 24) + (((UINTN)_bus) << 16) + (((UINTN)_dev) << 11) + (((UINTN)_func) << 8) + ((UINTN)_reg)) )
-
-//
-// Local variables for performing SAL Proc calls
-//
-PLABEL mSalProcPlabel;
-CALL_SAL_PROC mGlobalSalProc;
-
-EFI_STATUS
-PcatRootBridgeIoIoRead (
- IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
- IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
- IN UINT64 UserAddress,
- IN UINTN Count,
- IN OUT VOID *UserBuffer
- )
-{
- PCAT_PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
- UINTN InStride;
- UINTN OutStride;
- UINTN AlignMask;
- UINTN Address;
- PTR Buffer;
- UINT16 Data16;
- UINT32 Data32;
-
-
- if ( UserBuffer == NULL ) {
- return EFI_INVALID_PARAMETER;
- }
-
- PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(This);
-
- Address = (UINTN) UserAddress;
- Buffer.buf = (UINT8 *)UserBuffer;
-
- if ( Address < PrivateData->IoBase || Address > PrivateData->IoLimit ) {
- return EFI_INVALID_PARAMETER;
- }
-
- if ((UINT32)Width >= EfiPciWidthMaximum) {
- return EFI_INVALID_PARAMETER;
- }
-
- if ((Width & 0x03) == EfiPciWidthUint64) {
- return EFI_INVALID_PARAMETER;
- }
-
- AlignMask = (1 << (Width & 0x03)) - 1;
- if ( Address & AlignMask ) {
- return EFI_INVALID_PARAMETER;
- }
-
- InStride = 1 << (Width & 0x03);
- OutStride = InStride;
- if (Width >=EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint64) {
- InStride = 0;
- }
- if (Width >=EfiPciWidthFillUint8 && Width <= EfiPciWidthFillUint64) {
- OutStride = 0;
- }
- Width = Width & 0x03;
-
- Address += PrivateData->PhysicalIoBase;
-
- //
- // Loop for each iteration and move the data
- //
-
- switch (Width) {
- case EfiPciWidthUint8:
- for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
- MEMORY_FENCE();
- *Buffer.ui8 = PORT_TO_MEM8(Address);
- MEMORY_FENCE();
- }
- break;
-
- case EfiPciWidthUint16:
- for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
- MEMORY_FENCE();
- if (Buffer.ui & 0x1) {
- Data16 = PORT_TO_MEM16(Address);
- *Buffer.ui8 = (UINT8)(Data16 & 0xff);
- *(Buffer.ui8+1) = (UINT8)((Data16 >> 8) & 0xff);
- } else {
- *Buffer.ui16 = PORT_TO_MEM16(Address);
- }
- MEMORY_FENCE();
- }
- break;
-
- case EfiPciWidthUint32:
- for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
- MEMORY_FENCE();
- if (Buffer.ui & 0x3) {
- Data32 = PORT_TO_MEM32(Address);
- *Buffer.ui8 = (UINT8)(Data32 & 0xff);
- *(Buffer.ui8+1) = (UINT8)((Data32 >> 8) & 0xff);
- *(Buffer.ui8+2) = (UINT8)((Data32 >> 16) & 0xff);
- *(Buffer.ui8+3) = (UINT8)((Data32 >> 24) & 0xff);
- } else {
- *Buffer.ui32 = PORT_TO_MEM32(Address);
- }
- MEMORY_FENCE();
- }
- break;
- }
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-PcatRootBridgeIoIoWrite (
- IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
- IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
- IN UINT64 UserAddress,
- IN UINTN Count,
- IN OUT VOID *UserBuffer
- )
-{
- PCAT_PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
- UINTN InStride;
- UINTN OutStride;
- UINTN AlignMask;
- UINTN Address;
- PTR Buffer;
- UINT16 Data16;
- UINT32 Data32;
-
- if ( UserBuffer == NULL ) {
- return EFI_INVALID_PARAMETER;
- }
-
- PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(This);
-
- Address = (UINTN) UserAddress;
- Buffer.buf = (UINT8 *)UserBuffer;
-
- if ( Address < PrivateData->IoBase || Address > PrivateData->IoLimit ) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Width < 0 || Width >= EfiPciWidthMaximum) {
- return EFI_INVALID_PARAMETER;
- }
-
- if ((Width & 0x03) == EfiPciWidthUint64) {
- return EFI_INVALID_PARAMETER;
- }
-
- AlignMask = (1 << (Width & 0x03)) - 1;
- if ( Address & AlignMask ) {
- return EFI_INVALID_PARAMETER;
- }
-
- InStride = 1 << (Width & 0x03);
- OutStride = InStride;
- if (Width >=EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint64) {
- InStride = 0;
- }
- if (Width >=EfiPciWidthFillUint8 && Width <= EfiPciWidthFillUint64) {
- OutStride = 0;
- }
- Width = Width & 0x03;
-
- Address += PrivateData->PhysicalIoBase;
-
- //
- // Loop for each iteration and move the data
- //
-
- switch (Width) {
- case EfiPciWidthUint8:
- for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
- MEMORY_FENCE();
- PORT_TO_MEM8(Address) = *Buffer.ui8;
- MEMORY_FENCE();
- }
- break;
-
- case EfiPciWidthUint16:
- for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
- MEMORY_FENCE();
- if (Buffer.ui & 0x1) {
- Data16 = *Buffer.ui8;
- Data16 = Data16 | (*(Buffer.ui8+1) << 8);
- PORT_TO_MEM16(Address) = Data16;
- } else {
- PORT_TO_MEM16(Address) = *Buffer.ui16;
- }
- MEMORY_FENCE();
- }
- break;
- case EfiPciWidthUint32:
- for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
- MEMORY_FENCE();
- if (Buffer.ui & 0x3) {
- Data32 = *Buffer.ui8;
- Data32 = Data32 | (*(Buffer.ui8+1) << 8);
- Data32 = Data32 | (*(Buffer.ui8+2) << 16);
- Data32 = Data32 | (*(Buffer.ui8+3) << 24);
- PORT_TO_MEM32(Address) = Data32;
- } else {
- PORT_TO_MEM32(Address) = *Buffer.ui32;
- }
- MEMORY_FENCE();
- }
- break;
- }
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-PcatRootBridgeIoGetIoPortMapping (
- OUT EFI_PHYSICAL_ADDRESS *IoPortMapping,
- OUT EFI_PHYSICAL_ADDRESS *MemoryPortMapping
- )
-/*++
-
- Get the IO Port Map from the SAL System Table.
-
---*/
-{
- SAL_SYSTEM_TABLE_ASCENDING_ORDER *SalSystemTable;
- SAL_ST_MEMORY_DESCRIPTOR_ENTRY *SalMemDesc;
- EFI_STATUS Status;
-
- //
- // On all Itanium architectures, bit 63 is the I/O bit for performming Memory Mapped I/O operations
- //
- *MemoryPortMapping = 0x8000000000000000;
-
- Status = EfiLibGetSystemConfigurationTable(&gEfiSalSystemTableGuid, &SalSystemTable);
- if (EFI_ERROR(Status)) {
- return EFI_NOT_FOUND;
- }
-
- //
- // BugBug: Add code to test checksum on the Sal System Table
- //
- if (SalSystemTable->Entry0.Type != 0) {
- return EFI_UNSUPPORTED;
- }
-
- mSalProcPlabel.ProcEntryPoint = SalSystemTable->Entry0.SalProcEntry;
- mSalProcPlabel.GP = SalSystemTable->Entry0.GlobalDataPointer;
- mGlobalSalProc = (CALL_SAL_PROC)&mSalProcPlabel.ProcEntryPoint;
-
- //
- // The SalSystemTable pointer includes the Type 0 entry.
- // The SalMemDesc is Type 1 so it comes next.
- //
- SalMemDesc = (SAL_ST_MEMORY_DESCRIPTOR_ENTRY *)(SalSystemTable + 1);
- while (SalMemDesc->Type == SAL_ST_MEMORY_DESCRIPTOR) {
- if (SalMemDesc->MemoryType == SAL_IO_PORT_MAPPING) {
- *IoPortMapping = SalMemDesc->PhysicalMemoryAddress;
- *IoPortMapping |= 0x8000000000000000;
- return EFI_SUCCESS;
- }
- SalMemDesc++;
- }
- return EFI_UNSUPPORTED;
-}
-
-EFI_STATUS
-PcatRootBridgeIoPciRW (
- IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
- IN BOOLEAN Write,
- IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
- IN UINT64 UserAddress,
- IN UINTN Count,
- IN OUT UINT8 *UserBuffer
- )
-{
- PCAT_PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
- UINTN AlignMask;
- UINTN InStride;
- UINTN OutStride;
- UINT64 Address;
- DEFIO_PCI_ADDR *Defio;
- PTR Buffer;
- UINT32 Data32;
- UINT16 Data16;
- rArg Return;
-
- if (Width < 0 || Width >= EfiPciWidthMaximum) {
- return EFI_INVALID_PARAMETER;
- }
-
- if ((Width & 0x03) == EfiPciWidthUint64) {
- return EFI_INVALID_PARAMETER;
- }
-
- AlignMask = (1 << (Width & 0x03)) - 1;
- if ( UserAddress & AlignMask ) {
- return EFI_INVALID_PARAMETER;
- }
-
- InStride = 1 << (Width & 0x03);
- OutStride = InStride;
- if (Width >=EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint64) {
- InStride = 0;
- }
- if (Width >=EfiPciWidthFillUint8 && Width <= EfiPciWidthFillUint64) {
- OutStride = 0;
- }
- Width = Width & 0x03;
-
- Defio = (DEFIO_PCI_ADDR *)&UserAddress;
-
- if ((Defio->Function > PCI_MAX_FUNC) || (Defio->Device > PCI_MAX_DEVICE)) {
- return EFI_UNSUPPORTED;
- }
-
- Buffer.buf = (UINT8 *)UserBuffer;
-
- PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(This);
-
- Address = EFI_PCI_ADDRESS_IA64(
- This->SegmentNumber,
- Defio->Bus,
- Defio->Device,
- Defio->Function,
- Defio->Register
- );
-
- //
- // PCI Config access are all 32-bit alligned, but by accessing the
- // CONFIG_DATA_REGISTER (0xcfc) with different widths more cycle types
- // are possible on PCI.
- //
- // SalProc takes care of reading the proper register depending on stride
- //
-
- EfiAcquireLock(&PrivateData->PciLock);
-
- while (Count) {
-
- if(Write) {
-
- if (Buffer.ui & 0x3) {
- Data32 = (*(Buffer.ui8+0) << 0);
- Data32 |= (*(Buffer.ui8+1) << 8);
- Data32 |= (*(Buffer.ui8+2) << 16);
- Data32 |= (*(Buffer.ui8+3) << 24);
- } else {
- Data32 = *Buffer.ui32;
- }
-
- Return.p0 = -3;
- Return = mGlobalSalProc((UINT64) SAL_PCI_CONFIG_WRITE,
- Address, 1 << Width, Data32, 0, 0, 0, 0);
-
- if(Return.p0) {
- EfiReleaseLock(&PrivateData->PciLock);
- return EFI_UNSUPPORTED;
- }
-
- } else {
-
- Return.p0 = -3;
- Return = mGlobalSalProc((UINT64) SAL_PCI_CONFIG_READ,
- Address, 1 << Width, 0, 0, 0, 0, 0);
-
- if(Return.p0) {
- EfiReleaseLock(&PrivateData->PciLock);
- return EFI_UNSUPPORTED;
- }
-
- switch (Width) {
- case EfiPciWidthUint8:
- *Buffer.ui8 = (UINT8)Return.p1;
- break;
- case EfiPciWidthUint16:
- if (Buffer.ui & 0x1) {
- Data16 = (UINT16)Return.p1;
- *(Buffer.ui8 + 0) = Data16 & 0xff;
- *(Buffer.ui8 + 1) = (Data16 >> 8) & 0xff;
- } else {
- *Buffer.ui16 = (UINT16)Return.p1;
- }
- break;
- case EfiPciWidthUint32:
- if (Buffer.ui & 0x3) {
- Data32 = (UINT32)Return.p1;
- *(Buffer.ui8 + 0) = (UINT8)(Data32 & 0xff);
- *(Buffer.ui8 + 1) = (UINT8)((Data32 >> 8) & 0xff);
- *(Buffer.ui8 + 2) = (UINT8)((Data32 >> 16) & 0xff);
- *(Buffer.ui8 + 3) = (UINT8)((Data32 >> 24) & 0xff);
- } else {
- *Buffer.ui32 = (UINT32)Return.p1;
- }
- break;
- }
- }
-
- Address += InStride;
- Buffer.buf += OutStride;
- Count -= 1;
- }
-
- EfiReleaseLock(&PrivateData->PciLock);
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-ScanPciRootBridgeForRoms(
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *IoDev
- )
-
-{
- return EFI_UNSUPPORTED;
-}
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