SetResizableBar.c File Reference

#include <Uefi.h>
#include <IndustryStandard/Pci.h>
#include <Protocol/PciIo.h>
#include <Protocol/PciRootBridgeIo.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DebugLib.h>
#include <Library/IoLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/OcDeviceMiscLib.h>
#include "PciExtInternal.h"

Go to the source code of this file.

Functions
STATIC EFI_STATUS	LocatePciCapabilityPciIo (IN EFI_PCI_IO_PROTOCOL *PciIo, IN UINT16 CapId, OUT UINT32 *Offset)
STATIC UINT64	PciAddrOffset (UINT64 PciAddress, INT32 Offset)
STATIC EFI_STATUS	LocatePciCapabilityRbIo (IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo, IN UINT64 PciAddress, IN UINT16 CapId, OUT UINT32 *Offset)
STATIC EFI_STATUS	SetResizableBarOnDevicePciIo (IN EFI_PCI_IO_PROTOCOL *PciIo, IN PCI_BAR_SIZE Size, IN BOOLEAN Increase)
STATIC EFI_STATUS	SetResizableBarOnDeviceRbIo (IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo, IN UINT64 PciAddress, IN PCI_BAR_SIZE Size, IN BOOLEAN Increase)
EFI_STATUS	ResizeGpuBarsPciIo (IN PCI_BAR_SIZE Size, IN BOOLEAN Increase)
STATIC BOOLEAN	PciGetNextBusRange (IN OUT EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR **Descriptors, OUT UINT16 *MinBus, OUT UINT16 *MaxBus)
STATIC EFI_STATUS	ResizeGpuBarsRbIo (IN PCI_BAR_SIZE Size, IN BOOLEAN Increase)
EFI_STATUS	ResizeGpuBars (IN PCI_BAR_SIZE Size, IN BOOLEAN Increase, IN BOOLEAN UseRbIo)

Detailed Description

Copyright (C) 2021, vit9696. All rights reserved.

All rights reserved.

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.

Definition in file SetResizableBar.c.

Function Documentation

LocatePciCapabilityPciIo()

STATIC EFI_STATUS LocatePciCapabilityPciIo	(	IN EFI_PCI_IO_PROTOCOL *	PciIo,
		IN UINT16	CapId,
		OUT UINT32 *	Offset )

Definition at line 34 of file SetResizableBar.c.

LocatePciCapabilityRbIo()

STATIC EFI_STATUS LocatePciCapabilityRbIo	(	IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *	PciRootBridgeIo,
		IN UINT64	PciAddress,
		IN UINT16	CapId,
		OUT UINT32 *	Offset )

Definition at line 103 of file SetResizableBar.c.

PciAddrOffset()

STATIC UINT64 PciAddrOffset	(	UINT64	PciAddress,
		INT32	Offset )

Definition at line 88 of file SetResizableBar.c.

PciGetNextBusRange()

STATIC BOOLEAN PciGetNextBusRange	(	IN OUT EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR **	Descriptors,
		OUT UINT16 *	MinBus,
		OUT UINT16 *	MaxBus )

Definition at line 694 of file SetResizableBar.c.

ResizeGpuBars()

EFI_STATUS ResizeGpuBars	(	IN PCI_BAR_SIZE	Size,
		IN BOOLEAN	Increase,
		IN BOOLEAN	UseRbIo )

Resize GPU PCIe BARs up to Size.

Note: this function can increase RBAR size but it currently does not check whether the resulting BAR will not overlap other device memory. Use with care.

Parameters

[in]	Size	Maximum BAR size.
[in]	Increase	Increase BAR size if possible.

Return values

EFI_SUCCESS

if at least one BAR resized.

Definition at line 854 of file SetResizableBar.c.

ResizeGpuBarsPciIo()

EFI_STATUS ResizeGpuBarsPciIo	(	IN PCI_BAR_SIZE	Size,
		IN BOOLEAN	Increase )

Definition at line 611 of file SetResizableBar.c.

ResizeGpuBarsRbIo()

STATIC EFI_STATUS ResizeGpuBarsRbIo	(	IN PCI_BAR_SIZE	Size,
		IN BOOLEAN	Increase )

Definition at line 733 of file SetResizableBar.c.

SetResizableBarOnDevicePciIo()

STATIC EFI_STATUS SetResizableBarOnDevicePciIo	(	IN EFI_PCI_IO_PROTOCOL *	PciIo,
		IN PCI_BAR_SIZE	Size,
		IN BOOLEAN	Increase )

Definition at line 155 of file SetResizableBar.c.

SetResizableBarOnDeviceRbIo()

STATIC EFI_STATUS SetResizableBarOnDeviceRbIo	(	IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *	PciRootBridgeIo,
		IN UINT64	PciAddress,
		IN PCI_BAR_SIZE	Size,
		IN BOOLEAN	Increase )

Definition at line 386 of file SetResizableBar.c.