diff options
Diffstat (limited to 'OvmfPkg/VirtioPciDeviceDxe/VirtioPciFunctions.c')
| -rw-r--r-- | OvmfPkg/VirtioPciDeviceDxe/VirtioPciFunctions.c | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/OvmfPkg/VirtioPciDeviceDxe/VirtioPciFunctions.c b/OvmfPkg/VirtioPciDeviceDxe/VirtioPciFunctions.c deleted file mode 100644 index 243aa14c24..0000000000 --- a/OvmfPkg/VirtioPciDeviceDxe/VirtioPciFunctions.c +++ /dev/null @@ -1,273 +0,0 @@ -/** @file
-
- 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.<BR>
- Copyright (C) 2013, ARM Ltd.
-
- 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.
-
-**/
-#include <Library/BaseMemoryLib.h>
-#include <Library/DebugLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/UefiLib.h>
-#include "VirtioPciDevice.h"
-
-/**
-
- 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.
-
- @param[in] This VirtIo Device protocol.
-
- @param[in] FieldOffset Source offset.
-
- @param[in] FieldSize Source field size, must be in { 1, 2, 4, 8 }.
-
- @param[in] BufferSize Number of bytes available in the target buffer. Must
- equal FieldSize.
-
- @param[out] Buffer Target buffer.
-
-
- @return Status code returned by PciIo->Io.Read().
-
-**/
-EFI_STATUS
-EFIAPI
-VirtioPciDeviceRead (
- IN VIRTIO_DEVICE_PROTOCOL *This,
- IN UINTN FieldOffset,
- IN UINTN FieldSize,
- IN UINTN BufferSize,
- OUT VOID *Buffer
- )
-{
- VIRTIO_PCI_DEVICE *Dev;
-
- Dev = VIRTIO_PCI_DEVICE_FROM_VIRTIO_DEVICE (This);
-
- return VirtioPciIoRead (Dev,
- Dev->DeviceSpecificConfigurationOffset + FieldOffset,
- FieldSize, BufferSize, Buffer);
-}
-
-/**
-
- Write a word into Region 0 of the device specified by VirtIo Device protocol.
-
- @param[in] This VirtIo Device protocol.
-
- @param[in] FieldOffset Destination offset.
-
- @param[in] FieldSize Destination field size, must be in { 1, 2, 4, 8 }.
-
- @param[in] Value Little endian value to write, converted to UINT64.
- The least significant FieldSize bytes will be used.
-
-
- @return Status code returned by PciIo->Io.Write().
-
-**/
-EFI_STATUS
-EFIAPI
-VirtioPciDeviceWrite (
- IN VIRTIO_DEVICE_PROTOCOL *This,
- IN UINTN FieldOffset,
- IN UINTN FieldSize,
- IN UINT64 Value
- )
-{
- VIRTIO_PCI_DEVICE *Dev;
-
- Dev = VIRTIO_PCI_DEVICE_FROM_VIRTIO_DEVICE (This);
-
- return VirtioPciIoWrite (Dev,
- Dev->DeviceSpecificConfigurationOffset + FieldOffset, FieldSize, Value);
-}
-
-EFI_STATUS
-EFIAPI
-VirtioPciGetDeviceFeatures (
- IN VIRTIO_DEVICE_PROTOCOL *This,
- OUT UINT64 *DeviceFeatures
- )
-{
- VIRTIO_PCI_DEVICE *Dev;
- EFI_STATUS Status;
- UINT32 Features32;
-
- if (DeviceFeatures == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- Dev = VIRTIO_PCI_DEVICE_FROM_VIRTIO_DEVICE (This);
-
- Status = VirtioPciIoRead (Dev, VIRTIO_PCI_OFFSET_DEVICE_FEATURES,
- sizeof (UINT32), sizeof (UINT32), &Features32);
- if (!EFI_ERROR (Status)) {
- *DeviceFeatures = Features32;
- }
- return Status;
-}
-
-EFI_STATUS
-EFIAPI
-VirtioPciGetQueueSize (
- IN VIRTIO_DEVICE_PROTOCOL *This,
- OUT UINT16 *QueueNumMax
- )
-{
- VIRTIO_PCI_DEVICE *Dev;
-
- if (QueueNumMax == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- Dev = VIRTIO_PCI_DEVICE_FROM_VIRTIO_DEVICE (This);
-
- return VirtioPciIoRead (Dev, VIRTIO_PCI_OFFSET_QUEUE_SIZE, sizeof (UINT16),
- sizeof (UINT16), QueueNumMax);
-}
-
-EFI_STATUS
-EFIAPI
-VirtioPciGetDeviceStatus (
- IN VIRTIO_DEVICE_PROTOCOL *This,
- OUT UINT8 *DeviceStatus
- )
-{
- VIRTIO_PCI_DEVICE *Dev;
-
- if (DeviceStatus == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- Dev = VIRTIO_PCI_DEVICE_FROM_VIRTIO_DEVICE (This);
-
- return VirtioPciIoRead (Dev, VIRTIO_PCI_OFFSET_QUEUE_DEVICE_STATUS,
- sizeof (UINT8), sizeof (UINT8), DeviceStatus);
-}
-
-EFI_STATUS
-EFIAPI
-VirtioPciSetGuestFeatures (
- IN VIRTIO_DEVICE_PROTOCOL *This,
- IN UINT64 Features
- )
-{
- VIRTIO_PCI_DEVICE *Dev;
-
- Dev = VIRTIO_PCI_DEVICE_FROM_VIRTIO_DEVICE (This);
-
- if (Features > MAX_UINT32) {
- return EFI_UNSUPPORTED;
- }
- return VirtioPciIoWrite (Dev, VIRTIO_PCI_OFFSET_GUEST_FEATURES,
- sizeof (UINT32), Features);
-}
-
-EFI_STATUS
-EFIAPI
-VirtioPciSetQueueAddress (
- IN VIRTIO_DEVICE_PROTOCOL *This,
- IN VRING *Ring
- )
-{
- VIRTIO_PCI_DEVICE *Dev;
-
- Dev = VIRTIO_PCI_DEVICE_FROM_VIRTIO_DEVICE (This);
-
- return VirtioPciIoWrite (Dev, VIRTIO_PCI_OFFSET_QUEUE_ADDRESS, sizeof (UINT32),
- (UINT32)((UINTN)Ring->Base >> EFI_PAGE_SHIFT));
-}
-
-EFI_STATUS
-EFIAPI
-VirtioPciSetQueueSel (
- VIRTIO_DEVICE_PROTOCOL *This,
- UINT16 Sel
- )
-{
- VIRTIO_PCI_DEVICE *Dev;
-
- Dev = VIRTIO_PCI_DEVICE_FROM_VIRTIO_DEVICE (This);
-
- return VirtioPciIoWrite (Dev, VIRTIO_PCI_OFFSET_QUEUE_SELECT, sizeof (UINT16),
- Sel);
-}
-
-EFI_STATUS
-EFIAPI
-VirtioPciSetQueueAlignment (
- VIRTIO_DEVICE_PROTOCOL *This,
- UINT32 Alignment
- )
-{
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-EFIAPI
-VirtioPciSetPageSize (
- VIRTIO_DEVICE_PROTOCOL *This,
- UINT32 PageSize
- )
-{
- return (PageSize == EFI_PAGE_SIZE) ? EFI_SUCCESS : EFI_UNSUPPORTED;
-}
-
-EFI_STATUS
-EFIAPI
-VirtioPciSetQueueNotify (
- VIRTIO_DEVICE_PROTOCOL *This,
- UINT16 Index
- )
-{
- VIRTIO_PCI_DEVICE *Dev;
-
- Dev = VIRTIO_PCI_DEVICE_FROM_VIRTIO_DEVICE (This);
-
- return VirtioPciIoWrite (Dev, VIRTIO_PCI_OFFSET_QUEUE_NOTIFY, sizeof (UINT16),
- Index);
-}
-
-EFI_STATUS
-EFIAPI
-VirtioPciSetQueueSize (
- VIRTIO_DEVICE_PROTOCOL *This,
- UINT16 Size
- )
-{
- //
- // This function is only applicable in Virtio-MMIO.
- // (The QueueSize field is read-only in Virtio proper (PCI))
- //
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-EFIAPI
-VirtioPciSetDeviceStatus (
- VIRTIO_DEVICE_PROTOCOL *This,
- UINT8 DeviceStatus
- )
-{
- VIRTIO_PCI_DEVICE *Dev;
-
- Dev = VIRTIO_PCI_DEVICE_FROM_VIRTIO_DEVICE (This);
-
- return VirtioPciIoWrite (Dev, VIRTIO_PCI_OFFSET_QUEUE_DEVICE_STATUS,
- sizeof (UINT8), DeviceStatus);
-}
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