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Functions
VirtioPciFunctions.c File Reference
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include "VirtioPciDevice.h"

Go to the source code of this file.

Functions

EFI_STATUS EFIAPI VirtioPciDeviceRead (IN VIRTIO_DEVICE_PROTOCOL *This, IN UINTN FieldOffset, IN UINTN FieldSize, IN UINTN BufferSize, OUT VOID *Buffer)
 
EFI_STATUS EFIAPI VirtioPciDeviceWrite (IN VIRTIO_DEVICE_PROTOCOL *This, IN UINTN FieldOffset, IN UINTN FieldSize, IN UINT64 Value)
 
EFI_STATUS EFIAPI VirtioPciGetDeviceFeatures (IN VIRTIO_DEVICE_PROTOCOL *This, OUT UINT64 *DeviceFeatures)
 
EFI_STATUS EFIAPI VirtioPciGetQueueSize (IN VIRTIO_DEVICE_PROTOCOL *This, OUT UINT16 *QueueNumMax)
 
EFI_STATUS EFIAPI VirtioPciGetDeviceStatus (IN VIRTIO_DEVICE_PROTOCOL *This, OUT UINT8 *DeviceStatus)
 
EFI_STATUS EFIAPI VirtioPciSetGuestFeatures (IN VIRTIO_DEVICE_PROTOCOL *This, IN UINT64 Features)
 
EFI_STATUS EFIAPI VirtioPciSetQueueAddress (IN VIRTIO_DEVICE_PROTOCOL *This, IN VRING *Ring, IN UINT64 RingBaseShift)
 
EFI_STATUS EFIAPI VirtioPciSetQueueSel (IN VIRTIO_DEVICE_PROTOCOL *This, IN UINT16 Sel)
 
EFI_STATUS EFIAPI VirtioPciSetQueueAlignment (IN VIRTIO_DEVICE_PROTOCOL *This, IN UINT32 Alignment)
 
EFI_STATUS EFIAPI VirtioPciSetPageSize (IN VIRTIO_DEVICE_PROTOCOL *This, IN UINT32 PageSize)
 
EFI_STATUS EFIAPI VirtioPciSetQueueNotify (IN VIRTIO_DEVICE_PROTOCOL *This, IN UINT16 Index)
 
EFI_STATUS EFIAPI VirtioPciSetQueueSize (IN VIRTIO_DEVICE_PROTOCOL *This, IN UINT16 Size)
 
EFI_STATUS EFIAPI VirtioPciSetDeviceStatus (IN VIRTIO_DEVICE_PROTOCOL *This, IN UINT8 DeviceStatus)
 
EFI_STATUS EFIAPI VirtioPciAllocateSharedPages (IN VIRTIO_DEVICE_PROTOCOL *This, IN UINTN NumPages, OUT VOID **HostAddress)
 
VOID EFIAPI VirtioPciFreeSharedPages (IN VIRTIO_DEVICE_PROTOCOL *This, IN UINTN NumPages, IN VOID *HostAddress)
 
EFI_STATUS EFIAPI VirtioPciMapSharedBuffer (IN VIRTIO_DEVICE_PROTOCOL *This, IN VIRTIO_MAP_OPERATION Operation, IN VOID *HostAddress, IN OUT UINTN *NumberOfBytes, OUT EFI_PHYSICAL_ADDRESS *DeviceAddress, OUT VOID **Mapping)
 
EFI_STATUS EFIAPI VirtioPciUnmapSharedBuffer (IN VIRTIO_DEVICE_PROTOCOL *This, IN VOID *Mapping)
 

Detailed Description

This driver produces Virtio Device Protocol instances for Virtio PCI devices.

Copyright (C) 2012, Red Hat, Inc. Copyright (c) 2012, Intel Corporation. All rights reserved.
Copyright (C) 2013, ARM Ltd. Copyright (C) 2017, AMD Inc, All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file VirtioPciFunctions.c.

Function Documentation

◆ VirtioPciAllocateSharedPages()

EFI_STATUS EFIAPI VirtioPciAllocateSharedPages ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN UINTN  NumPages,
OUT VOID **  HostAddress 
)

Definition at line 320 of file VirtioPciFunctions.c.

◆ VirtioPciDeviceRead()

EFI_STATUS EFIAPI VirtioPciDeviceRead ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN UINTN  FieldOffset,
IN UINTN  FieldSize,
IN UINTN  BufferSize,
OUT VOID *  Buffer 
)

Read a word from Region 0 of the device specified by VirtIo Device protocol.

The function implements the ReadDevice protocol member of VIRTIO_DEVICE_PROTOCOL.

Parameters
[in]ThisVirtIo Device protocol.
[in]FieldOffsetSource offset.
[in]FieldSizeSource field size, must be in { 1, 2, 4, 8 }.
[in]BufferSizeNumber of bytes available in the target buffer. Must equal FieldSize.
[out]BufferTarget buffer.
Returns
Status code returned by PciIo->Io.Read().

Definition at line 44 of file VirtioPciFunctions.c.

◆ VirtioPciDeviceWrite()

EFI_STATUS EFIAPI VirtioPciDeviceWrite ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN UINTN  FieldOffset,
IN UINTN  FieldSize,
IN UINT64  Value 
)

Write a word into Region 0 of the device specified by VirtIo Device protocol.

Parameters
[in]ThisVirtIo Device protocol.
[in]FieldOffsetDestination offset.
[in]FieldSizeDestination field size, must be in { 1, 2, 4, 8 }.
[in]ValueLittle endian value to write, converted to UINT64. The least significant FieldSize bytes will be used.
Returns
Status code returned by PciIo->Io.Write().

Definition at line 84 of file VirtioPciFunctions.c.

◆ VirtioPciFreeSharedPages()

VOID EFIAPI VirtioPciFreeSharedPages ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN UINTN  NumPages,
IN VOID *  HostAddress 
)

Definition at line 339 of file VirtioPciFunctions.c.

◆ VirtioPciGetDeviceFeatures()

EFI_STATUS EFIAPI VirtioPciGetDeviceFeatures ( IN VIRTIO_DEVICE_PROTOCOL *  This,
OUT UINT64 *  DeviceFeatures 
)

Definition at line 105 of file VirtioPciFunctions.c.

◆ VirtioPciGetDeviceStatus()

EFI_STATUS EFIAPI VirtioPciGetDeviceStatus ( IN VIRTIO_DEVICE_PROTOCOL *  This,
OUT UINT8 *  DeviceStatus 
)

Definition at line 160 of file VirtioPciFunctions.c.

◆ VirtioPciGetQueueSize()

EFI_STATUS EFIAPI VirtioPciGetQueueSize ( IN VIRTIO_DEVICE_PROTOCOL *  This,
OUT UINT16 *  QueueNumMax 
)

Definition at line 136 of file VirtioPciFunctions.c.

◆ VirtioPciMapSharedBuffer()

EFI_STATUS EFIAPI VirtioPciMapSharedBuffer ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN VIRTIO_MAP_OPERATION  Operation,
IN VOID *  HostAddress,
IN OUT UINTN *  NumberOfBytes,
OUT EFI_PHYSICAL_ADDRESS *  DeviceAddress,
OUT VOID **  Mapping 
)

Definition at line 350 of file VirtioPciFunctions.c.

◆ VirtioPciSetDeviceStatus()

EFI_STATUS EFIAPI VirtioPciSetDeviceStatus ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN UINT8  DeviceStatus 
)

Definition at line 301 of file VirtioPciFunctions.c.

◆ VirtioPciSetGuestFeatures()

EFI_STATUS EFIAPI VirtioPciSetGuestFeatures ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN UINT64  Features 
)

Definition at line 184 of file VirtioPciFunctions.c.

◆ VirtioPciSetPageSize()

EFI_STATUS EFIAPI VirtioPciSetPageSize ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN UINT32  PageSize 
)

Definition at line 258 of file VirtioPciFunctions.c.

◆ VirtioPciSetQueueAddress()

EFI_STATUS EFIAPI VirtioPciSetQueueAddress ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN VRING *  Ring,
IN UINT64  RingBaseShift 
)

Definition at line 207 of file VirtioPciFunctions.c.

◆ VirtioPciSetQueueAlignment()

EFI_STATUS EFIAPI VirtioPciSetQueueAlignment ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN UINT32  Alignment 
)

Definition at line 248 of file VirtioPciFunctions.c.

◆ VirtioPciSetQueueNotify()

EFI_STATUS EFIAPI VirtioPciSetQueueNotify ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN UINT16  Index 
)

Definition at line 268 of file VirtioPciFunctions.c.

◆ VirtioPciSetQueueSel()

EFI_STATUS EFIAPI VirtioPciSetQueueSel ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN UINT16  Sel 
)

Definition at line 229 of file VirtioPciFunctions.c.

◆ VirtioPciSetQueueSize()

EFI_STATUS EFIAPI VirtioPciSetQueueSize ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN UINT16  Size 
)

Definition at line 287 of file VirtioPciFunctions.c.

◆ VirtioPciUnmapSharedBuffer()

EFI_STATUS EFIAPI VirtioPciUnmapSharedBuffer ( IN VIRTIO_DEVICE_PROTOCOL *  This,
IN VOID *  Mapping 
)

Definition at line 367 of file VirtioPciFunctions.c.