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https://github.com/CloverHackyColor/CloverBootloader.git
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2080 lines
71 KiB
C
2080 lines
71 KiB
C
/** @file
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EFI PCI IO protocol functions implementation for PCI Bus module.
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Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "PciBus.h"
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//
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// Pci Io Protocol Interface
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//
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EFI_PCI_IO_PROTOCOL mPciIoInterface = {
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PciIoPollMem,
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PciIoPollIo,
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{
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PciIoMemRead,
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PciIoMemWrite
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},
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{
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PciIoIoRead,
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PciIoIoWrite
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},
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{
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PciIoConfigRead,
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PciIoConfigWrite
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},
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PciIoCopyMem,
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PciIoMap,
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PciIoUnmap,
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PciIoAllocateBuffer,
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PciIoFreeBuffer,
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PciIoFlush,
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PciIoGetLocation,
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PciIoAttributes,
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PciIoGetBarAttributes,
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PciIoSetBarAttributes,
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0,
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NULL
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};
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/**
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Initializes a PCI I/O Instance.
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@param PciIoDevice Pci device instance.
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**/
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VOID
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InitializePciIoInstance (
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IN PCI_IO_DEVICE *PciIoDevice
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)
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{
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CopyMem (&PciIoDevice->PciIo, &mPciIoInterface, sizeof (EFI_PCI_IO_PROTOCOL));
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}
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/**
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Verifies access to a PCI Base Address Register (BAR).
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@param PciIoDevice Pci device instance.
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@param BarIndex The BAR index of the standard PCI Configuration header to use as the
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base address for the memory or I/O operation to perform.
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@param Type Operation type could be memory or I/O.
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@param Width Signifies the width of the memory or I/O operations.
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@param Count The number of memory or I/O operations to perform.
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@param Offset The offset within the PCI configuration space for the PCI controller.
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@retval EFI_INVALID_PARAMETER Invalid Width/BarIndex or Bar type.
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@retval EFI_SUCCESS Successfully verified.
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**/
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EFI_STATUS
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PciIoVerifyBarAccess (
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IN PCI_IO_DEVICE *PciIoDevice,
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IN UINT8 BarIndex,
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IN PCI_BAR_TYPE Type,
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IN IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN IN UINTN Count,
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IN UINT64 *Offset
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)
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{
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if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
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return EFI_INVALID_PARAMETER;
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}
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if (BarIndex == EFI_PCI_IO_PASS_THROUGH_BAR) {
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return EFI_SUCCESS;
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}
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//
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// BarIndex 0-5 is legal
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//
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if (BarIndex >= PCI_MAX_BAR) {
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return EFI_INVALID_PARAMETER;
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}
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if (!CheckBarType (PciIoDevice, BarIndex, Type)) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// If Width is EfiPciIoWidthFifoUintX then convert to EfiPciIoWidthUintX
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// If Width is EfiPciIoWidthFillUintX then convert to EfiPciIoWidthUintX
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//
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if (Width >= EfiPciIoWidthFifoUint8 && Width <= EfiPciIoWidthFifoUint64) {
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Count = 1;
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}
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Width = (EFI_PCI_IO_PROTOCOL_WIDTH) (Width & 0x03);
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if ((*Offset + Count * (UINTN)(1 << Width)) - 1 >= PciIoDevice->PciBar[BarIndex].Length) {
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return EFI_INVALID_PARAMETER;
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}
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*Offset = *Offset + PciIoDevice->PciBar[BarIndex].BaseAddress;
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return EFI_SUCCESS;
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}
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/**
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Verifies access to a PCI Configuration Header.
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@param PciIoDevice Pci device instance.
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@param Width Signifies the width of the memory or I/O operations.
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@param Count The number of memory or I/O operations to perform.
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@param Offset The offset within the PCI configuration space for the PCI controller.
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@retval EFI_INVALID_PARAMETER Invalid Width
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@retval EFI_UNSUPPORTED Offset overflowed.
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@retval EFI_SUCCESS Successfully verified.
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**/
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EFI_STATUS
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PciIoVerifyConfigAccess (
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IN PCI_IO_DEVICE *PciIoDevice,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINTN Count,
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IN UINT64 *Offset
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)
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{
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UINT64 ExtendOffset;
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if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// If Width is EfiPciIoWidthFillUintX then convert to EfiPciIoWidthUintX
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//
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Width = (EFI_PCI_IO_PROTOCOL_WIDTH) (Width & 0x03);
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if (PciIoDevice->IsPciExp) {
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if ((*Offset + Count * (UINTN)(1 << Width)) - 1 >= PCI_EXP_MAX_CONFIG_OFFSET) {
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return EFI_UNSUPPORTED;
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}
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ExtendOffset = LShiftU64 (*Offset, 32);
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*Offset = EFI_PCI_ADDRESS (PciIoDevice->BusNumber, PciIoDevice->DeviceNumber, PciIoDevice->FunctionNumber, 0);
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*Offset = (*Offset) | ExtendOffset;
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} else {
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if ((*Offset + Count * (UINTN)(1 << Width)) - 1 >= PCI_MAX_CONFIG_OFFSET) {
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return EFI_UNSUPPORTED;
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}
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*Offset = EFI_PCI_ADDRESS (PciIoDevice->BusNumber, PciIoDevice->DeviceNumber, PciIoDevice->FunctionNumber, *Offset);
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}
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return EFI_SUCCESS;
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}
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/**
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Reads from the memory space of a PCI controller. Returns either when the polling exit criteria is
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satisfied or after a defined duration.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory or I/O operations.
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@param BarIndex The BAR index of the standard PCI Configuration header to use as the
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base address for the memory operation to perform.
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@param Offset The offset within the selected BAR to start the memory operation.
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@param Mask Mask used for the polling criteria.
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@param Value The comparison value used for the polling exit criteria.
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@param Delay The number of 100 ns units to poll.
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@param Result Pointer to the last value read from the memory location.
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@retval EFI_SUCCESS The last data returned from the access matched the poll exit criteria.
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@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
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@retval EFI_UNSUPPORTED Offset is not valid for the BarIndex of this PCI controller.
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@retval EFI_TIMEOUT Delay expired before a match occurred.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
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**/
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EFI_STATUS
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EFIAPI
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PciIoPollMem (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT8 BarIndex,
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IN UINT64 Offset,
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IN UINT64 Mask,
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IN UINT64 Value,
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IN UINT64 Delay,
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OUT UINT64 *Result
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)
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{
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EFI_STATUS Status;
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PCI_IO_DEVICE *PciIoDevice;
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PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
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if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
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return EFI_INVALID_PARAMETER;
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}
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Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeMem, Width, 1, &Offset);
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if (EFI_ERROR (Status)) {
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return EFI_UNSUPPORTED;
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}
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if (Width > EfiPciIoWidthUint64) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// If request is not aligned, then convert request to EfiPciIoWithXXXUint8
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//
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if (FeaturePcdGet (PcdUnalignedPciIoEnable)) {
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if ((Offset & ((1 << (Width & 0x03)) - 1)) != 0) {
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Status = PciIoMemRead (This, Width, BarIndex, Offset, 1, Result);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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if ((*Result & Mask) == Value || Delay == 0) {
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return EFI_SUCCESS;
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}
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do {
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//
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// Stall 10 us = 100 * 100ns
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//
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gBS->Stall (10);
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Status = PciIoMemRead (This, Width, BarIndex, Offset, 1, Result);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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if ((*Result & Mask) == Value) {
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return EFI_SUCCESS;
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}
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if (Delay <= 100) {
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return EFI_TIMEOUT;
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}
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Delay -= 100;
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} while (TRUE);
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}
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}
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Status = PciIoDevice->PciRootBridgeIo->PollMem (
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PciIoDevice->PciRootBridgeIo,
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(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
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Offset,
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Mask,
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Value,
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Delay,
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Result
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);
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if (EFI_ERROR (Status)) {
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REPORT_STATUS_CODE_WITH_DEVICE_PATH (
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EFI_ERROR_CODE | EFI_ERROR_MINOR,
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EFI_IO_BUS_PCI | EFI_IOB_EC_CONTROLLER_ERROR,
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PciIoDevice->DevicePath
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);
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}
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return Status;
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}
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/**
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Reads from the memory space of a PCI controller. Returns either when the polling exit criteria is
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satisfied or after a defined duration.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory or I/O operations.
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@param BarIndex The BAR index of the standard PCI Configuration header to use as the
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base address for the memory operation to perform.
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@param Offset The offset within the selected BAR to start the memory operation.
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@param Mask Mask used for the polling criteria.
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@param Value The comparison value used for the polling exit criteria.
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@param Delay The number of 100 ns units to poll.
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@param Result Pointer to the last value read from the memory location.
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@retval EFI_SUCCESS The last data returned from the access matched the poll exit criteria.
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@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
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@retval EFI_UNSUPPORTED Offset is not valid for the BarIndex of this PCI controller.
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@retval EFI_TIMEOUT Delay expired before a match occurred.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
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**/
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EFI_STATUS
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EFIAPI
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PciIoPollIo (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT8 BarIndex,
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IN UINT64 Offset,
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IN UINT64 Mask,
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IN UINT64 Value,
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IN UINT64 Delay,
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OUT UINT64 *Result
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)
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{
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EFI_STATUS Status;
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PCI_IO_DEVICE *PciIoDevice;
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PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
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if (Width < 0 || Width > EfiPciIoWidthUint64) {
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return EFI_INVALID_PARAMETER;
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}
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Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeIo, Width, 1, &Offset);
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if (EFI_ERROR (Status)) {
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return EFI_UNSUPPORTED;
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}
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//
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// If request is not aligned, then convert request to EfiPciIoWithXXXUint8
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//
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if (FeaturePcdGet (PcdUnalignedPciIoEnable)) {
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if ((Offset & ((1 << (Width & 0x03)) - 1)) != 0) {
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Status = PciIoIoRead (This, Width, BarIndex, Offset, 1, Result);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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if ((*Result & Mask) == Value || Delay == 0) {
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return EFI_SUCCESS;
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}
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do {
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//
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// Stall 10 us = 100 * 100ns
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//
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gBS->Stall (10);
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Status = PciIoIoRead (This, Width, BarIndex, Offset, 1, Result);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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if ((*Result & Mask) == Value) {
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return EFI_SUCCESS;
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}
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if (Delay <= 100) {
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return EFI_TIMEOUT;
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}
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Delay -= 100;
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} while (TRUE);
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}
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}
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Status = PciIoDevice->PciRootBridgeIo->PollIo (
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PciIoDevice->PciRootBridgeIo,
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(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
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Offset,
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Mask,
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Value,
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Delay,
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Result
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);
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if (EFI_ERROR (Status)) {
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REPORT_STATUS_CODE_WITH_DEVICE_PATH (
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EFI_ERROR_CODE | EFI_ERROR_MINOR,
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EFI_IO_BUS_PCI | EFI_IOB_EC_CONTROLLER_ERROR,
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PciIoDevice->DevicePath
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);
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}
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return Status;
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}
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/**
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Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory or I/O operations.
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@param BarIndex The BAR index of the standard PCI Configuration header to use as the
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|
base address for the memory or I/O operation to perform.
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@param Offset The offset within the selected BAR to start the memory or I/O operation.
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@param Count The number of memory or I/O operations to perform.
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@param Buffer For read operations, the destination buffer to store the results. For write
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operations, the source buffer to write data from.
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@retval EFI_SUCCESS The data was read from or written to the PCI controller.
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@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
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@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
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valid for the PCI BAR specified by BarIndex.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
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**/
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EFI_STATUS
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EFIAPI
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PciIoMemRead (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT8 BarIndex,
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IN UINT64 Offset,
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IN UINTN Count,
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IN OUT VOID *Buffer
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)
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{
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EFI_STATUS Status;
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PCI_IO_DEVICE *PciIoDevice;
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PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
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if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
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return EFI_INVALID_PARAMETER;
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}
|
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|
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if (Buffer == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeMem, Width, Count, &Offset);
|
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if (EFI_ERROR (Status)) {
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return EFI_UNSUPPORTED;
|
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}
|
|
|
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//
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// If request is not aligned, then convert request to EfiPciIoWithXXXUint8
|
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//
|
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if (FeaturePcdGet (PcdUnalignedPciIoEnable)) {
|
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if ((Offset & ((1 << (Width & 0x03)) - 1)) != 0) {
|
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Count *= (UINTN)(1 << (Width & 0x03));
|
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Width = (EFI_PCI_IO_PROTOCOL_WIDTH) (Width & (~0x03));
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}
|
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}
|
|
|
|
|
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Status = PciIoDevice->PciRootBridgeIo->Mem.Read (
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PciIoDevice->PciRootBridgeIo,
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(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
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Offset,
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Count,
|
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Buffer
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);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_READ_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Width Signifies the width of the memory or I/O operations.
|
|
@param BarIndex The BAR index of the standard PCI Configuration header to use as the
|
|
base address for the memory or I/O operation to perform.
|
|
@param Offset The offset within the selected BAR to start the memory or I/O operation.
|
|
@param Count The number of memory or I/O operations to perform.
|
|
@param Buffer For read operations, the destination buffer to store the results. For write
|
|
operations, the source buffer to write data from.
|
|
|
|
@retval EFI_SUCCESS The data was read from or written to the PCI controller.
|
|
@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
|
|
@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
|
|
valid for the PCI BAR specified by BarIndex.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
|
|
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoMemWrite (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
|
|
IN UINT8 BarIndex,
|
|
IN UINT64 Offset,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (Buffer == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeMem, Width, Count, &Offset);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// If request is not aligned, then convert request to EfiPciIoWithXXXUint8
|
|
//
|
|
if (FeaturePcdGet (PcdUnalignedPciIoEnable)) {
|
|
if ((Offset & ((1 << (Width & 0x03)) - 1)) != 0) {
|
|
Count *= (UINTN)(1 << (Width & 0x03));
|
|
Width = (EFI_PCI_IO_PROTOCOL_WIDTH) (Width & (~0x03));
|
|
}
|
|
}
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->Mem.Write (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Offset,
|
|
Count,
|
|
Buffer
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_WRITE_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Width Signifies the width of the memory or I/O operations.
|
|
@param BarIndex The BAR index of the standard PCI Configuration header to use as the
|
|
base address for the memory or I/O operation to perform.
|
|
@param Offset The offset within the selected BAR to start the memory or I/O operation.
|
|
@param Count The number of memory or I/O operations to perform.
|
|
@param Buffer For read operations, the destination buffer to store the results. For write
|
|
operations, the source buffer to write data from.
|
|
|
|
@retval EFI_SUCCESS The data was read from or written to the PCI controller.
|
|
@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
|
|
@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
|
|
valid for the PCI BAR specified by BarIndex.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
|
|
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoIoRead (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
|
|
IN UINT8 BarIndex,
|
|
IN UINT64 Offset,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (Buffer == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeIo, Width, Count, &Offset);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// If request is not aligned, then convert request to EfiPciIoWithXXXUint8
|
|
//
|
|
if (FeaturePcdGet (PcdUnalignedPciIoEnable)) {
|
|
if ((Offset & ((1 << (Width & 0x03)) - 1)) != 0) {
|
|
Count *= (UINTN)(1 << (Width & 0x03));
|
|
Width = (EFI_PCI_IO_PROTOCOL_WIDTH) (Width & (~0x03));
|
|
}
|
|
}
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->Io.Read (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Offset,
|
|
Count,
|
|
Buffer
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_READ_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Width Signifies the width of the memory or I/O operations.
|
|
@param BarIndex The BAR index of the standard PCI Configuration header to use as the
|
|
base address for the memory or I/O operation to perform.
|
|
@param Offset The offset within the selected BAR to start the memory or I/O operation.
|
|
@param Count The number of memory or I/O operations to perform.
|
|
@param Buffer For read operations, the destination buffer to store the results. For write
|
|
operations, the source buffer to write data from.
|
|
|
|
@retval EFI_SUCCESS The data was read from or written to the PCI controller.
|
|
@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
|
|
@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
|
|
valid for the PCI BAR specified by BarIndex.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
|
|
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoIoWrite (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
|
|
IN UINT8 BarIndex,
|
|
IN UINT64 Offset,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (Buffer == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeIo, Width, Count, &Offset);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// If request is not aligned, then convert request to EfiPciIoWithXXXUint8
|
|
//
|
|
if (FeaturePcdGet (PcdUnalignedPciIoEnable)) {
|
|
if ((Offset & ((1 << (Width & 0x03)) - 1)) != 0) {
|
|
Count *= (UINTN)(1 << (Width & 0x03));
|
|
Width = (EFI_PCI_IO_PROTOCOL_WIDTH) (Width & (~0x03));
|
|
}
|
|
}
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->Io.Write (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Offset,
|
|
Count,
|
|
Buffer
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_WRITE_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Enable a PCI driver to access PCI controller registers in PCI configuration space.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Width Signifies the width of the memory operations.
|
|
@param Offset The offset within the PCI configuration space for the PCI controller.
|
|
@param Count The number of PCI configuration operations to perform.
|
|
@param Buffer For read operations, the destination buffer to store the results. For write
|
|
operations, the source buffer to write data from.
|
|
|
|
|
|
@retval EFI_SUCCESS The data was read from or written to the PCI controller.
|
|
@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
|
|
valid for the PCI configuration header of the PCI controller.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
|
|
@retval EFI_INVALID_PARAMETER Buffer is NULL or Width is invalid.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoConfigRead (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
|
|
IN UINT32 Offset,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
UINT64 Address;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
Address = Offset;
|
|
Status = PciIoVerifyConfigAccess (PciIoDevice, Width, Count, &Address);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// If request is not aligned, then convert request to EfiPciIoWithXXXUint8
|
|
//
|
|
if (FeaturePcdGet (PcdUnalignedPciIoEnable)) {
|
|
if ((Offset & ((1 << (Width & 0x03)) - 1)) != 0) {
|
|
Count *= (UINTN)(1 << (Width & 0x03));
|
|
Width = (EFI_PCI_IO_PROTOCOL_WIDTH) (Width & (~0x03));
|
|
}
|
|
}
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->Pci.Read (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Address,
|
|
Count,
|
|
Buffer
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_READ_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Enable a PCI driver to access PCI controller registers in PCI configuration space.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Width Signifies the width of the memory operations.
|
|
@param Offset The offset within the PCI configuration space for the PCI controller.
|
|
@param Count The number of PCI configuration operations to perform.
|
|
@param Buffer For read operations, the destination buffer to store the results. For write
|
|
operations, the source buffer to write data from.
|
|
|
|
|
|
@retval EFI_SUCCESS The data was read from or written to the PCI controller.
|
|
@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
|
|
valid for the PCI configuration header of the PCI controller.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
|
|
@retval EFI_INVALID_PARAMETER Buffer is NULL or Width is invalid.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoConfigWrite (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
|
|
IN UINT32 Offset,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
UINT64 Address;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
Address = Offset;
|
|
Status = PciIoVerifyConfigAccess (PciIoDevice, Width, Count, &Address);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// If request is not aligned, then convert request to EfiPciIoWithXXXUint8
|
|
//
|
|
if (FeaturePcdGet (PcdUnalignedPciIoEnable)) {
|
|
if ((Offset & ((1 << (Width & 0x03)) - 1)) != 0) {
|
|
Count *= (UINTN)(1 << (Width & 0x03));
|
|
Width = (EFI_PCI_IO_PROTOCOL_WIDTH) (Width & (~0x03));
|
|
}
|
|
}
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->Pci.Write (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Address,
|
|
Count,
|
|
Buffer
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_WRITE_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Enables a PCI driver to copy one region of PCI memory space to another region of PCI
|
|
memory space.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Width Signifies the width of the memory operations.
|
|
@param DestBarIndex The BAR index in the standard PCI Configuration header to use as the
|
|
base address for the memory operation to perform.
|
|
@param DestOffset The destination offset within the BAR specified by DestBarIndex to
|
|
start the memory writes for the copy operation.
|
|
@param SrcBarIndex The BAR index in the standard PCI Configuration header to use as the
|
|
base address for the memory operation to perform.
|
|
@param SrcOffset The source offset within the BAR specified by SrcBarIndex to start
|
|
the memory reads for the copy operation.
|
|
@param Count The number of memory operations to perform. Bytes moved is Width
|
|
size * Count, starting at DestOffset and SrcOffset.
|
|
|
|
@retval EFI_SUCCESS The data was copied from one memory region to another memory region.
|
|
@retval EFI_UNSUPPORTED DestBarIndex not valid for this PCI controller.
|
|
@retval EFI_UNSUPPORTED SrcBarIndex not valid for this PCI controller.
|
|
@retval EFI_UNSUPPORTED The address range specified by DestOffset, Width, and Count
|
|
is not valid for the PCI BAR specified by DestBarIndex.
|
|
@retval EFI_UNSUPPORTED The address range specified by SrcOffset, Width, and Count is
|
|
not valid for the PCI BAR specified by SrcBarIndex.
|
|
@retval EFI_INVALID_PARAMETER Width is invalid.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoCopyMem (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
|
|
IN UINT8 DestBarIndex,
|
|
IN UINT64 DestOffset,
|
|
IN UINT8 SrcBarIndex,
|
|
IN UINT64 SrcOffset,
|
|
IN UINTN Count
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (Width == EfiPciIoWidthFifoUint8 ||
|
|
Width == EfiPciIoWidthFifoUint16 ||
|
|
Width == EfiPciIoWidthFifoUint32 ||
|
|
Width == EfiPciIoWidthFifoUint64 ||
|
|
Width == EfiPciIoWidthFillUint8 ||
|
|
Width == EfiPciIoWidthFillUint16 ||
|
|
Width == EfiPciIoWidthFillUint32 ||
|
|
Width == EfiPciIoWidthFillUint64) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Status = PciIoVerifyBarAccess (PciIoDevice, DestBarIndex, PciBarTypeMem, Width, Count, &DestOffset);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
Status = PciIoVerifyBarAccess (PciIoDevice, SrcBarIndex, PciBarTypeMem, Width, Count, &SrcOffset);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// If request is not aligned, then convert request to EfiPciIoWithXXXUint8
|
|
//
|
|
if (FeaturePcdGet (PcdUnalignedPciIoEnable)) {
|
|
if ((SrcOffset & ((1 << (Width & 0x03)) - 1)) != 0 || (DestOffset & ((1 << (Width & 0x03)) - 1)) != 0) {
|
|
Count *= (UINTN)(1 << (Width & 0x03));
|
|
Width = (EFI_PCI_IO_PROTOCOL_WIDTH) (Width & (~0x03));
|
|
}
|
|
}
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->CopyMem (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
DestOffset,
|
|
SrcOffset,
|
|
Count
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_CONTROLLER_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Provides the PCI controller-specific addresses needed to access system memory.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Operation Indicates if the bus master is going to read or write to system memory.
|
|
@param HostAddress The system memory address to map to the PCI controller.
|
|
@param NumberOfBytes On input the number of bytes to map. On output the number of bytes
|
|
that were mapped.
|
|
@param DeviceAddress The resulting map address for the bus master PCI controller to use to
|
|
access the hosts HostAddress.
|
|
@param Mapping A resulting value to pass to Unmap().
|
|
|
|
@retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.
|
|
@retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.
|
|
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
|
|
@retval EFI_DEVICE_ERROR The system hardware could not map the requested address.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoMap (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN EFI_PCI_IO_PROTOCOL_OPERATION Operation,
|
|
IN VOID *HostAddress,
|
|
IN OUT UINTN *NumberOfBytes,
|
|
OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
|
|
OUT VOID **Mapping
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
if (Operation < 0 || Operation >= EfiPciIoOperationMaximum) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (HostAddress == NULL || NumberOfBytes == NULL || DeviceAddress == NULL || Mapping == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if ((PciIoDevice->Attributes & EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE) != 0) {
|
|
Operation = (EFI_PCI_IO_PROTOCOL_OPERATION) (Operation + EfiPciOperationBusMasterRead64);
|
|
}
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->Map (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION) Operation,
|
|
HostAddress,
|
|
NumberOfBytes,
|
|
DeviceAddress,
|
|
Mapping
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_CONTROLLER_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Completes the Map() operation and releases any corresponding resources.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Mapping The mapping value returned from Map().
|
|
|
|
@retval EFI_SUCCESS The range was unmapped.
|
|
@retval EFI_DEVICE_ERROR The data was not committed to the target system memory.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoUnmap (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN VOID *Mapping
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->Unmap (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
Mapping
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_CONTROLLER_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Allocates pages that are suitable for an EfiPciIoOperationBusMasterCommonBuffer
|
|
mapping.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Type This parameter is not used and must be ignored.
|
|
@param MemoryType The type of memory to allocate, EfiBootServicesData or
|
|
EfiRuntimeServicesData.
|
|
@param Pages The number of pages to allocate.
|
|
@param HostAddress A pointer to store the base system memory address of the
|
|
allocated range.
|
|
@param Attributes The requested bit mask of attributes for the allocated range.
|
|
|
|
@retval EFI_SUCCESS The requested memory pages were allocated.
|
|
@retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are
|
|
MEMORY_WRITE_COMBINE and MEMORY_CACHED.
|
|
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
|
@retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoAllocateBuffer (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN EFI_ALLOCATE_TYPE Type,
|
|
IN EFI_MEMORY_TYPE MemoryType,
|
|
IN UINTN Pages,
|
|
OUT VOID **HostAddress,
|
|
IN UINT64 Attributes
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
|
|
if ((Attributes &
|
|
(~(EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE | EFI_PCI_ATTRIBUTE_MEMORY_CACHED))) != 0){
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
if ((PciIoDevice->Attributes & EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE) != 0) {
|
|
Attributes |= EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE;
|
|
}
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->AllocateBuffer (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
Type,
|
|
MemoryType,
|
|
Pages,
|
|
HostAddress,
|
|
Attributes
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_CONTROLLER_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Frees memory that was allocated with AllocateBuffer().
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Pages The number of pages to free.
|
|
@param HostAddress The base system memory address of the allocated range.
|
|
|
|
@retval EFI_SUCCESS The requested memory pages were freed.
|
|
@retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages
|
|
was not allocated with AllocateBuffer().
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoFreeBuffer (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN UINTN Pages,
|
|
IN VOID *HostAddress
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->FreeBuffer (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
Pages,
|
|
HostAddress
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_CONTROLLER_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Flushes all PCI posted write transactions from a PCI host bridge to system memory.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
|
|
@retval EFI_SUCCESS The PCI posted write transactions were flushed from the PCI host
|
|
bridge to system memory.
|
|
@retval EFI_DEVICE_ERROR The PCI posted write transactions were not flushed from the PCI
|
|
host bridge due to a hardware error.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoFlush (
|
|
IN EFI_PCI_IO_PROTOCOL *This
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->Flush (
|
|
PciIoDevice->PciRootBridgeIo
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_CONTROLLER_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Retrieves this PCI controller's current PCI bus number, device number, and function number.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param SegmentNumber The PCI controller's current PCI segment number.
|
|
@param BusNumber The PCI controller's current PCI bus number.
|
|
@param DeviceNumber The PCI controller's current PCI device number.
|
|
@param FunctionNumber The PCI controller's current PCI function number.
|
|
|
|
@retval EFI_SUCCESS The PCI controller location was returned.
|
|
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoGetLocation (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
OUT UINTN *Segment,
|
|
OUT UINTN *Bus,
|
|
OUT UINTN *Device,
|
|
OUT UINTN *Function
|
|
)
|
|
{
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
if (Segment == NULL || Bus == NULL || Device == NULL || Function == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
*Segment = PciIoDevice->PciRootBridgeIo->SegmentNumber;
|
|
*Bus = PciIoDevice->BusNumber;
|
|
*Device = PciIoDevice->DeviceNumber;
|
|
*Function = PciIoDevice->FunctionNumber;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Check BAR type for PCI resource.
|
|
|
|
@param PciIoDevice PCI device instance.
|
|
@param BarIndex The BAR index of the standard PCI Configuration header to use as the
|
|
base address for the memory or I/O operation to perform.
|
|
@param BarType Memory or I/O.
|
|
|
|
@retval TRUE Pci device's bar type is same with input BarType.
|
|
@retval TRUE Pci device's bar type is not same with input BarType.
|
|
|
|
**/
|
|
BOOLEAN
|
|
CheckBarType (
|
|
IN PCI_IO_DEVICE *PciIoDevice,
|
|
IN UINT8 BarIndex,
|
|
IN PCI_BAR_TYPE BarType
|
|
)
|
|
{
|
|
switch (BarType) {
|
|
|
|
case PciBarTypeMem:
|
|
|
|
if (PciIoDevice->PciBar[BarIndex].BarType != PciBarTypeMem32 &&
|
|
PciIoDevice->PciBar[BarIndex].BarType != PciBarTypePMem32 &&
|
|
PciIoDevice->PciBar[BarIndex].BarType != PciBarTypePMem64 &&
|
|
PciIoDevice->PciBar[BarIndex].BarType != PciBarTypeMem64 ) {
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
case PciBarTypeIo:
|
|
if (PciIoDevice->PciBar[BarIndex].BarType != PciBarTypeIo32 &&
|
|
PciIoDevice->PciBar[BarIndex].BarType != PciBarTypeIo16){
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
Set/Disable new attributes to a Root Bridge.
|
|
|
|
@param PciIoDevice Pci device instance.
|
|
@param Attributes New attribute want to be set.
|
|
@param Operation Set or Disable.
|
|
|
|
@retval EFI_UNSUPPORTED If root bridge does not support change attribute.
|
|
@retval EFI_SUCCESS Successfully set new attributs.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
ModifyRootBridgeAttributes (
|
|
IN PCI_IO_DEVICE *PciIoDevice,
|
|
IN UINT64 Attributes,
|
|
IN EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION Operation
|
|
)
|
|
{
|
|
UINT64 PciRootBridgeSupports;
|
|
UINT64 PciRootBridgeAttributes;
|
|
UINT64 NewPciRootBridgeAttributes;
|
|
EFI_STATUS Status;
|
|
|
|
//
|
|
// Get the current attributes of this PCI device's PCI Root Bridge
|
|
//
|
|
Status = PciIoDevice->PciRootBridgeIo->GetAttributes (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
&PciRootBridgeSupports,
|
|
&PciRootBridgeAttributes
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// Mask off attributes not supported by PCI root bridge.
|
|
//
|
|
Attributes &= ~(UINT64)(EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE |
|
|
EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM |
|
|
EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE);
|
|
|
|
//
|
|
// Record the new attribute of the Root Bridge
|
|
//
|
|
if (Operation == EfiPciIoAttributeOperationEnable) {
|
|
NewPciRootBridgeAttributes = PciRootBridgeAttributes | Attributes;
|
|
} else {
|
|
NewPciRootBridgeAttributes = PciRootBridgeAttributes & (~Attributes);
|
|
}
|
|
|
|
//
|
|
// Call the PCI Root Bridge to attempt to modify the attributes
|
|
//
|
|
if ((NewPciRootBridgeAttributes ^ PciRootBridgeAttributes) != 0) {
|
|
|
|
Status = PciIoDevice->PciRootBridgeIo->SetAttributes (
|
|
PciIoDevice->PciRootBridgeIo,
|
|
NewPciRootBridgeAttributes,
|
|
NULL,
|
|
NULL
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
//
|
|
// The PCI Root Bridge could not modify the attributes, so return the error.
|
|
//
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Also update the attributes for this Root Bridge structure
|
|
//
|
|
PciIoDevice->Attributes = NewPciRootBridgeAttributes;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Check whether this device can be enable/disable to snoop.
|
|
|
|
@param PciIoDevice Pci device instance.
|
|
@param Operation Enable/Disable.
|
|
|
|
@retval EFI_UNSUPPORTED Pci device is not GFX device or not support snoop.
|
|
@retval EFI_SUCCESS Snoop can be supported.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
SupportPaletteSnoopAttributes (
|
|
IN PCI_IO_DEVICE *PciIoDevice,
|
|
IN EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION Operation
|
|
)
|
|
{
|
|
PCI_IO_DEVICE *Temp;
|
|
UINT16 VGACommand;
|
|
|
|
//
|
|
// Snoop attribute can be only modified by GFX
|
|
//
|
|
if (!IS_PCI_GFX (&PciIoDevice->Pci)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// Get the boot VGA on the same segement
|
|
//
|
|
Temp = ActiveVGADeviceOnTheSameSegment (PciIoDevice);
|
|
|
|
if (Temp == NULL) {
|
|
//
|
|
// If there is no VGA device on the segement, set
|
|
// this graphics card to decode the palette range
|
|
//
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
//
|
|
// Check these two agents are on the same path
|
|
//
|
|
if (!PciDevicesOnTheSamePath (Temp, PciIoDevice)) {
|
|
//
|
|
// they are not on the same path, so snoop can be enabled or disabled
|
|
//
|
|
return EFI_SUCCESS;
|
|
}
|
|
//
|
|
// Check if they are on the same bus
|
|
//
|
|
if (Temp->Parent == PciIoDevice->Parent) {
|
|
|
|
PCI_READ_COMMAND_REGISTER (Temp, &VGACommand);
|
|
|
|
//
|
|
// If they are on the same bus, either one can
|
|
// be set to snoop, the other set to decode
|
|
//
|
|
if ((VGACommand & EFI_PCI_COMMAND_VGA_PALETTE_SNOOP) != 0) {
|
|
//
|
|
// VGA has set to snoop, so GFX can be only set to disable snoop
|
|
//
|
|
if (Operation == EfiPciIoAttributeOperationEnable) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
} else {
|
|
//
|
|
// VGA has disabled to snoop, so GFX can be only enabled
|
|
//
|
|
if (Operation == EfiPciIoAttributeOperationDisable) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
//
|
|
// If they are on the same path but on the different bus
|
|
// The first agent is set to snoop, the second one set to
|
|
// decode
|
|
//
|
|
|
|
if (Temp->BusNumber < PciIoDevice->BusNumber) {
|
|
//
|
|
// GFX should be set to decode
|
|
//
|
|
if (Operation == EfiPciIoAttributeOperationDisable) {
|
|
PCI_ENABLE_COMMAND_REGISTER (Temp, EFI_PCI_COMMAND_VGA_PALETTE_SNOOP);
|
|
Temp->Attributes |= EFI_PCI_COMMAND_VGA_PALETTE_SNOOP;
|
|
} else {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
} else {
|
|
//
|
|
// GFX should be set to snoop
|
|
//
|
|
if (Operation == EfiPciIoAttributeOperationEnable) {
|
|
PCI_DISABLE_COMMAND_REGISTER (Temp, EFI_PCI_COMMAND_VGA_PALETTE_SNOOP);
|
|
Temp->Attributes &= (~EFI_PCI_COMMAND_VGA_PALETTE_SNOOP);
|
|
} else {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Performs an operation on the attributes that this PCI controller supports. The operations include
|
|
getting the set of supported attributes, retrieving the current attributes, setting the current
|
|
attributes, enabling attributes, and disabling attributes.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Operation The operation to perform on the attributes for this PCI controller.
|
|
@param Attributes The mask of attributes that are used for Set, Enable, and Disable
|
|
operations.
|
|
@param Result A pointer to the result mask of attributes that are returned for the Get
|
|
and Supported operations.
|
|
|
|
@retval EFI_SUCCESS The operation on the PCI controller's attributes was completed.
|
|
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
|
@retval EFI_UNSUPPORTED one or more of the bits set in
|
|
Attributes are not supported by this PCI controller or one of
|
|
its parent bridges when Operation is Set, Enable or Disable.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoAttributes (
|
|
IN EFI_PCI_IO_PROTOCOL * This,
|
|
IN EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION Operation,
|
|
IN UINT64 Attributes,
|
|
OUT UINT64 *Result OPTIONAL
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
PCI_IO_DEVICE *UpStreamBridge;
|
|
PCI_IO_DEVICE *Temp;
|
|
|
|
UINT64 Supports;
|
|
UINT64 UpStreamAttributes;
|
|
UINT16 BridgeControl;
|
|
UINT16 Command;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
switch (Operation) {
|
|
case EfiPciIoAttributeOperationGet:
|
|
if (Result == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
*Result = PciIoDevice->Attributes;
|
|
return EFI_SUCCESS;
|
|
|
|
case EfiPciIoAttributeOperationSupported:
|
|
if (Result == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
*Result = PciIoDevice->Supports;
|
|
return EFI_SUCCESS;
|
|
|
|
case EfiPciIoAttributeOperationSet:
|
|
Status = PciIoDevice->PciIo.Attributes (
|
|
&(PciIoDevice->PciIo),
|
|
EfiPciIoAttributeOperationEnable,
|
|
Attributes,
|
|
NULL
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
Status = PciIoDevice->PciIo.Attributes (
|
|
&(PciIoDevice->PciIo),
|
|
EfiPciIoAttributeOperationDisable,
|
|
(~Attributes) & (PciIoDevice->Supports),
|
|
NULL
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
|
|
case EfiPciIoAttributeOperationEnable:
|
|
case EfiPciIoAttributeOperationDisable:
|
|
break;
|
|
|
|
default:
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
//
|
|
// Just a trick for ENABLE attribute
|
|
// EFI_PCI_DEVICE_ENABLE is not defined in UEFI spec, which is the internal usage.
|
|
// So, this logic doesn't confrom to UEFI spec, which should be removed.
|
|
// But this trick logic is still kept for some binary drivers that depend on it.
|
|
//
|
|
if ((Attributes & EFI_PCI_DEVICE_ENABLE) == EFI_PCI_DEVICE_ENABLE) {
|
|
Attributes &= (PciIoDevice->Supports);
|
|
|
|
//
|
|
// Raise the EFI_P_PC_ENABLE Status code
|
|
//
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_PROGRESS_CODE,
|
|
EFI_IO_BUS_PCI | EFI_P_PC_ENABLE,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
//
|
|
// Check VGA and VGA16, they can not be set at the same time
|
|
//
|
|
if (((Attributes & EFI_PCI_IO_ATTRIBUTE_VGA_IO) != 0 &&
|
|
(Attributes & EFI_PCI_IO_ATTRIBUTE_VGA_IO_16) != 0) ||
|
|
((Attributes & EFI_PCI_IO_ATTRIBUTE_VGA_IO) != 0 &&
|
|
(Attributes & EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16) != 0) ||
|
|
((Attributes & EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO) != 0 &&
|
|
(Attributes & EFI_PCI_IO_ATTRIBUTE_VGA_IO_16) != 0) ||
|
|
((Attributes & EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO) != 0 &&
|
|
(Attributes & EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16) != 0) ) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
/* //
|
|
// workaround for PCI drivers which always set ISA_IO or VGA_IO attribute without detecting support of
|
|
// ISA_IO/ISA_IO_16 or VGA_IO/VGA_IO_16 to maintain backward-compatibility.
|
|
//
|
|
if (((Attributes & EFI_PCI_IO_ATTRIBUTE_VGA_IO) != 0) &&
|
|
((PciIoDevice->Supports & (EFI_PCI_IO_ATTRIBUTE_VGA_IO | EFI_PCI_IO_ATTRIBUTE_VGA_IO_16)) \
|
|
== EFI_PCI_IO_ATTRIBUTE_VGA_IO_16)) {
|
|
Attributes &= ~(UINT64)EFI_PCI_IO_ATTRIBUTE_VGA_IO;
|
|
Attributes |= EFI_PCI_IO_ATTRIBUTE_VGA_IO_16;
|
|
}
|
|
|
|
if (((Attributes & EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO) != 0) &&
|
|
((PciIoDevice->Supports & (EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO | EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16)) \
|
|
== EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16)) {
|
|
Attributes &= ~(UINT64)EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO;
|
|
Attributes |= EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16;
|
|
}
|
|
*/
|
|
//
|
|
// If no attributes can be supported, then return.
|
|
// Otherwise, set the attributes that it can support.
|
|
//
|
|
Supports = (PciIoDevice->Supports) & Attributes;
|
|
if (Supports != Attributes) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// For Root Bridge, just call RootBridgeIo to set attributes;
|
|
//
|
|
if (PciIoDevice->Parent == NULL) {
|
|
Status = ModifyRootBridgeAttributes (PciIoDevice, Attributes, Operation);
|
|
return Status;
|
|
}
|
|
|
|
Command = 0;
|
|
BridgeControl = 0;
|
|
|
|
//
|
|
// For PPB & P2C, set relevant attribute bits
|
|
//
|
|
if (IS_PCI_BRIDGE (&PciIoDevice->Pci) || IS_CARDBUS_BRIDGE (&PciIoDevice->Pci)) {
|
|
|
|
if ((Attributes & (EFI_PCI_IO_ATTRIBUTE_VGA_IO | EFI_PCI_IO_ATTRIBUTE_VGA_IO_16)) != 0) {
|
|
BridgeControl |= EFI_PCI_BRIDGE_CONTROL_VGA;
|
|
}
|
|
|
|
if ((Attributes & EFI_PCI_IO_ATTRIBUTE_ISA_IO) != 0) {
|
|
BridgeControl |= EFI_PCI_BRIDGE_CONTROL_ISA;
|
|
}
|
|
|
|
if ((Attributes & (EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO | EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16)) != 0) {
|
|
Command |= EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO;
|
|
}
|
|
|
|
if ((Attributes & (EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 | EFI_PCI_IO_ATTRIBUTE_VGA_IO_16)) != 0) {
|
|
BridgeControl |= EFI_PCI_BRIDGE_CONTROL_VGA_16;
|
|
}
|
|
|
|
} else {
|
|
//
|
|
// Do with the attributes on VGA
|
|
// Only for VGA's legacy resource, we just can enable once.
|
|
//
|
|
if ((Attributes &
|
|
(EFI_PCI_IO_ATTRIBUTE_VGA_IO |
|
|
EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 |
|
|
EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY)) != 0) {
|
|
//
|
|
// Check if a VGA has been enabled before enabling a new one
|
|
//
|
|
if (Operation == EfiPciIoAttributeOperationEnable) {
|
|
//
|
|
// Check if there have been an active VGA device on the same segment
|
|
//
|
|
Temp = ActiveVGADeviceOnTheSameSegment (PciIoDevice);
|
|
if (Temp != NULL && Temp != PciIoDevice) {
|
|
//
|
|
// An active VGA has been detected, so can not enable another
|
|
//
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Do with the attributes on GFX
|
|
//
|
|
if ((Attributes & (EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO | EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16)) != 0) {
|
|
|
|
if (Operation == EfiPciIoAttributeOperationEnable) {
|
|
//
|
|
// Check if snoop can be enabled in current configuration
|
|
//
|
|
Status = SupportPaletteSnoopAttributes (PciIoDevice, Operation);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
|
|
//
|
|
// Enable operation is forbidden, so mask the bit in attributes
|
|
// so as to keep consistent with the actual Status
|
|
//
|
|
// Attributes &= (~EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO);
|
|
//
|
|
//
|
|
//
|
|
return EFI_UNSUPPORTED;
|
|
|
|
}
|
|
}
|
|
|
|
//
|
|
// It can be supported, so get ready to set the bit
|
|
//
|
|
Command |= EFI_PCI_COMMAND_VGA_PALETTE_SNOOP;
|
|
}
|
|
}
|
|
|
|
if ((Attributes & EFI_PCI_IO_ATTRIBUTE_IO) != 0) {
|
|
Command |= EFI_PCI_COMMAND_IO_SPACE;
|
|
}
|
|
|
|
if ((Attributes & EFI_PCI_IO_ATTRIBUTE_MEMORY) != 0) {
|
|
Command |= EFI_PCI_COMMAND_MEMORY_SPACE;
|
|
}
|
|
|
|
if ((Attributes & EFI_PCI_IO_ATTRIBUTE_BUS_MASTER) != 0) {
|
|
Command |= EFI_PCI_COMMAND_BUS_MASTER;
|
|
}
|
|
//
|
|
// The upstream bridge should be also set to revelant attribute
|
|
// expect for IO, Mem and BusMaster
|
|
//
|
|
UpStreamAttributes = Attributes &
|
|
(~(EFI_PCI_IO_ATTRIBUTE_IO |
|
|
EFI_PCI_IO_ATTRIBUTE_MEMORY |
|
|
EFI_PCI_IO_ATTRIBUTE_BUS_MASTER
|
|
)
|
|
);
|
|
UpStreamBridge = PciIoDevice->Parent;
|
|
|
|
if (Operation == EfiPciIoAttributeOperationEnable) {
|
|
//
|
|
// Enable relevant attributes to command register and bridge control register
|
|
//
|
|
Status = PCI_ENABLE_COMMAND_REGISTER (PciIoDevice, Command);
|
|
if (BridgeControl != 0) {
|
|
Status = PCI_ENABLE_BRIDGE_CONTROL_REGISTER (PciIoDevice, BridgeControl);
|
|
}
|
|
|
|
PciIoDevice->Attributes |= Attributes;
|
|
|
|
//
|
|
// Enable attributes of the upstream bridge
|
|
//
|
|
Status = UpStreamBridge->PciIo.Attributes (
|
|
&(UpStreamBridge->PciIo),
|
|
EfiPciIoAttributeOperationEnable,
|
|
UpStreamAttributes,
|
|
NULL
|
|
);
|
|
} else {
|
|
|
|
//
|
|
// Disable relevant attributes to command register and bridge control register
|
|
//
|
|
Status = PCI_DISABLE_COMMAND_REGISTER (PciIoDevice, Command);
|
|
if (BridgeControl != 0) {
|
|
Status = PCI_DISABLE_BRIDGE_CONTROL_REGISTER (PciIoDevice, BridgeControl);
|
|
}
|
|
|
|
PciIoDevice->Attributes &= (~Attributes);
|
|
Status = EFI_SUCCESS;
|
|
|
|
}
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_ERROR_CODE | EFI_ERROR_MINOR,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_CONTROLLER_ERROR,
|
|
PciIoDevice->DevicePath
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Gets the attributes that this PCI controller supports setting on a BAR using
|
|
SetBarAttributes(), and retrieves the list of resource descriptors for a BAR.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param BarIndex The BAR index of the standard PCI Configuration header to use as the
|
|
base address for resource range. The legal range for this field is 0..5.
|
|
@param Supports A pointer to the mask of attributes that this PCI controller supports
|
|
setting for this BAR with SetBarAttributes().
|
|
@param Resources A pointer to the ACPI 2.0 resource descriptors that describe the current
|
|
configuration of this BAR of the PCI controller.
|
|
|
|
@retval EFI_SUCCESS If Supports is not NULL, then the attributes that the PCI
|
|
controller supports are returned in Supports. If Resources
|
|
is not NULL, then the ACPI 2.0 resource descriptors that the PCI
|
|
controller is currently using are returned in Resources.
|
|
@retval EFI_INVALID_PARAMETER Both Supports and Attributes are NULL.
|
|
@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
|
|
@retval EFI_OUT_OF_RESOURCES There are not enough resources available to allocate
|
|
Resources.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoGetBarAttributes (
|
|
IN EFI_PCI_IO_PROTOCOL * This,
|
|
IN UINT8 BarIndex,
|
|
OUT UINT64 *Supports, OPTIONAL
|
|
OUT VOID **Resources OPTIONAL
|
|
)
|
|
{
|
|
|
|
UINT8 *Configuration;
|
|
UINT8 NumConfig;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Ptr;
|
|
EFI_ACPI_END_TAG_DESCRIPTOR *PtrEnd;
|
|
|
|
NumConfig = 0;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
if (Supports == NULL && Resources == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (BarIndex >= PCI_MAX_BAR) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// This driver does not support modifications to the WRITE_COMBINE or
|
|
// CACHED attributes for BAR ranges.
|
|
//
|
|
if (Supports != NULL) {
|
|
*Supports = PciIoDevice->Supports & EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED & EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE;
|
|
}
|
|
|
|
if (Resources != NULL) {
|
|
|
|
if (PciIoDevice->PciBar[BarIndex].BarType != PciBarTypeUnknown) {
|
|
NumConfig = 1;
|
|
}
|
|
|
|
Configuration = AllocateZeroPool (sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) * NumConfig + sizeof (EFI_ACPI_END_TAG_DESCRIPTOR));
|
|
if (Configuration == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
Ptr = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Configuration;
|
|
|
|
if (NumConfig == 1) {
|
|
Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;
|
|
Ptr->Len = (UINT16) (sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) - 3);
|
|
|
|
Ptr->AddrRangeMin = PciIoDevice->PciBar[BarIndex].BaseAddress;
|
|
Ptr->AddrLen = PciIoDevice->PciBar[BarIndex].Length;
|
|
Ptr->AddrRangeMax = PciIoDevice->PciBar[BarIndex].Alignment;
|
|
|
|
switch (PciIoDevice->PciBar[BarIndex].BarType) {
|
|
case PciBarTypeIo16:
|
|
case PciBarTypeIo32:
|
|
//
|
|
// Io
|
|
//
|
|
Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_IO;
|
|
break;
|
|
|
|
case PciBarTypeMem32:
|
|
//
|
|
// Mem
|
|
//
|
|
Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;
|
|
//
|
|
// 32 bit
|
|
//
|
|
Ptr->AddrSpaceGranularity = 32;
|
|
break;
|
|
|
|
case PciBarTypePMem32:
|
|
//
|
|
// Mem
|
|
//
|
|
Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;
|
|
//
|
|
// prefechable
|
|
//
|
|
Ptr->SpecificFlag = 0x6;
|
|
//
|
|
// 32 bit
|
|
//
|
|
Ptr->AddrSpaceGranularity = 32;
|
|
break;
|
|
|
|
case PciBarTypeMem64:
|
|
//
|
|
// Mem
|
|
//
|
|
Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;
|
|
//
|
|
// 64 bit
|
|
//
|
|
Ptr->AddrSpaceGranularity = 64;
|
|
break;
|
|
|
|
case PciBarTypePMem64:
|
|
//
|
|
// Mem
|
|
//
|
|
Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;
|
|
//
|
|
// prefechable
|
|
//
|
|
Ptr->SpecificFlag = 0x6;
|
|
//
|
|
// 64 bit
|
|
//
|
|
Ptr->AddrSpaceGranularity = 64;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
Ptr = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) ((UINT8 *) Ptr + sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR));
|
|
}
|
|
|
|
//
|
|
// put the checksum
|
|
//
|
|
PtrEnd = (EFI_ACPI_END_TAG_DESCRIPTOR *) ((UINT8 *) Ptr);
|
|
PtrEnd->Desc = ACPI_END_TAG_DESCRIPTOR;
|
|
PtrEnd->Checksum = 0;
|
|
|
|
*Resources = Configuration;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Sets the attributes for a range of a BAR on a PCI controller.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Attributes The mask of attributes to set for the resource range specified by
|
|
BarIndex, Offset, and Length.
|
|
@param BarIndex The BAR index of the standard PCI Configuration header to use as the
|
|
base address for resource range. The legal range for this field is 0..5.
|
|
@param Offset A pointer to the BAR relative base address of the resource range to be
|
|
modified by the attributes specified by Attributes.
|
|
@param Length A pointer to the length of the resource range to be modified by the
|
|
attributes specified by Attributes.
|
|
|
|
@retval EFI_SUCCESS The set of attributes specified by Attributes for the resource
|
|
range specified by BarIndex, Offset, and Length were
|
|
set on the PCI controller, and the actual resource range is returned
|
|
in Offset and Length.
|
|
@retval EFI_INVALID_PARAMETER Offset or Length is NULL.
|
|
@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
|
|
@retval EFI_OUT_OF_RESOURCES There are not enough resources to set the attributes on the
|
|
resource range specified by BarIndex, Offset, and
|
|
Length.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoSetBarAttributes (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN UINT64 Attributes,
|
|
IN UINT8 BarIndex,
|
|
IN OUT UINT64 *Offset,
|
|
IN OUT UINT64 *Length
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
UINT64 NonRelativeOffset;
|
|
UINT64 Supports;
|
|
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);
|
|
|
|
//
|
|
// Make sure Offset and Length are not NULL
|
|
//
|
|
if (Offset == NULL || Length == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (PciIoDevice->PciBar[BarIndex].BarType == PciBarTypeUnknown) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
//
|
|
// This driver does not support setting the WRITE_COMBINE or the CACHED attributes.
|
|
// If Attributes is not 0, then return EFI_UNSUPPORTED.
|
|
//
|
|
Supports = PciIoDevice->Supports & EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED & EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE;
|
|
|
|
if (Attributes != (Attributes & Supports)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
//
|
|
// Attributes must be supported. Make sure the BAR range describd by BarIndex, Offset, and
|
|
// Length are valid for this PCI device.
|
|
//
|
|
NonRelativeOffset = *Offset;
|
|
Status = PciIoVerifyBarAccess (
|
|
PciIoDevice,
|
|
BarIndex,
|
|
PciBarTypeMem,
|
|
EfiPciIoWidthUint8,
|
|
(UINT32) *Length,
|
|
&NonRelativeOffset
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Program parent bridge's attribute recurrently.
|
|
|
|
@param PciIoDevice Child Pci device instance
|
|
@param Operation The operation to perform on the attributes for this PCI controller.
|
|
@param Attributes The mask of attributes that are used for Set, Enable, and Disable
|
|
operations.
|
|
|
|
@retval EFI_SUCCESS The operation on the PCI controller's attributes was completed.
|
|
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
|
@retval EFI_UNSUPPORTED one or more of the bits set in
|
|
Attributes are not supported by this PCI controller or one of
|
|
its parent bridges when Operation is Set, Enable or Disable.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
UpStreamBridgesAttributes (
|
|
IN PCI_IO_DEVICE *PciIoDevice,
|
|
IN EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION Operation,
|
|
IN UINT64 Attributes
|
|
)
|
|
{
|
|
PCI_IO_DEVICE *Parent;
|
|
EFI_PCI_IO_PROTOCOL *PciIo;
|
|
|
|
Parent = PciIoDevice->Parent;
|
|
|
|
while (Parent != NULL && IS_PCI_BRIDGE (&Parent->Pci)) {
|
|
|
|
//
|
|
// Get the PciIo Protocol
|
|
//
|
|
PciIo = &Parent->PciIo;
|
|
|
|
PciIo->Attributes (PciIo, Operation, Attributes, NULL);
|
|
|
|
Parent = Parent->Parent;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Test whether two Pci devices has same parent bridge.
|
|
|
|
@param PciDevice1 The first pci device for testing.
|
|
@param PciDevice2 The second pci device for testing.
|
|
|
|
@retval TRUE Two Pci device has the same parent bridge.
|
|
@retval FALSE Two Pci device has not the same parent bridge.
|
|
|
|
**/
|
|
BOOLEAN
|
|
PciDevicesOnTheSamePath (
|
|
IN PCI_IO_DEVICE *PciDevice1,
|
|
IN PCI_IO_DEVICE *PciDevice2
|
|
)
|
|
{
|
|
BOOLEAN Existed1;
|
|
BOOLEAN Existed2;
|
|
|
|
if (PciDevice1->Parent == PciDevice2->Parent) {
|
|
return TRUE;
|
|
}
|
|
|
|
Existed1 = PciDeviceExisted (PciDevice1->Parent, PciDevice2);
|
|
Existed2 = PciDeviceExisted (PciDevice2->Parent, PciDevice1);
|
|
|
|
return (BOOLEAN) (Existed1 || Existed2);
|
|
}
|
|
|