diff options
Diffstat (limited to 'OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.c')
| -rw-r--r-- | OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.c b/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.c deleted file mode 100644 index 4af9dd0ac2..0000000000 --- a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.c +++ /dev/null @@ -1,224 +0,0 @@ -/** @file
-
- This driver produces Virtio Device Protocol instances for Virtio Mmio devices.
-
- 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/MemoryAllocationLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-
-#include "VirtioMmioDevice.h"
-
-static VIRTIO_DEVICE_PROTOCOL mMmioDeviceProtocolTemplate = {
- 0, // Revision
- 0, // SubSystemDeviceId
- VirtioMmioGetDeviceFeatures, // GetDeviceFeatures
- VirtioMmioSetGuestFeatures, // SetGuestFeatures
- VirtioMmioGetQueueAddress, // GetQueueAddress
- VirtioMmioSetQueueAddress, // SetQueueAddress
- VirtioMmioSetQueueSel, // SetQueueSel
- VirtioMmioSetQueueNotify, // SetQueueNotify
- VirtioMmioSetQueueAlignment, // SetQueueAlign
- VirtioMmioSetPageSize, // SetPageSize
- VirtioMmioGetQueueSize, // GetQueueNumMax
- VirtioMmioSetQueueSize, // SetQueueNum
- VirtioMmioGetDeviceStatus, // GetDeviceStatus
- VirtioMmioSetDeviceStatus, // SetDeviceStatus
- VirtioMmioDeviceWrite, // WriteDevice
- VirtioMmioDeviceRead // ReadDevice
-};
-
-/**
-
- Initialize the VirtIo MMIO Device
-
- @param[in] BaseAddress Base Address of the VirtIo MMIO Device
-
- @param[in, out] Device The driver instance to configure.
-
- @retval EFI_SUCCESS Setup complete.
-
- @retval EFI_UNSUPPORTED The driver is not a VirtIo MMIO device.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-VirtioMmioInit (
- IN PHYSICAL_ADDRESS BaseAddress,
- IN OUT VIRTIO_MMIO_DEVICE *Device
- )
-{
- UINT32 MagicValue;
- UINT32 VendorId;
- UINT32 Version;
-
- //
- // Initialize VirtIo Mmio Device
- //
- CopyMem (&Device->VirtioDevice, &mMmioDeviceProtocolTemplate,
- sizeof (VIRTIO_DEVICE_PROTOCOL));
- Device->BaseAddress = BaseAddress;
- Device->VirtioDevice.Revision = VIRTIO_SPEC_REVISION (0, 9, 5);
- Device->VirtioDevice.SubSystemDeviceId =
- MmioRead32 (BaseAddress + VIRTIO_MMIO_OFFSET_DEVICE_ID);
-
- //
- // Double-check MMIO-specific values
- //
- MagicValue = VIRTIO_CFG_READ (Device, VIRTIO_MMIO_OFFSET_MAGIC);
- if (MagicValue != VIRTIO_MMIO_MAGIC) {
- return EFI_UNSUPPORTED;
- }
-
- Version = VIRTIO_CFG_READ (Device, VIRTIO_MMIO_OFFSET_VERSION);
- if (Version != 1) {
- return EFI_UNSUPPORTED;
- }
-
- //
- // Double-check MMIO-specific values
- //
- VendorId = VIRTIO_CFG_READ (Device, VIRTIO_MMIO_OFFSET_VENDOR_ID);
- if (VendorId != VIRTIO_VENDOR_ID) {
- //
- // The ARM Base and Foundation Models do not report a valid VirtIo VendorId.
- // They return a value of 0x0 for the VendorId.
- //
- DEBUG((EFI_D_WARN, "VirtioMmioInit: Warning: The VendorId (0x%X) does not "
- "match the VirtIo VendorId (0x%X).\n",
- VendorId, VIRTIO_VENDOR_ID));
- }
-
- return EFI_SUCCESS;
-}
-
-
-/**
-
- Uninitialize the internals of a virtio-mmio device that has been successfully
- set up with VirtioMmioInit().
-
- @param[in, out] Device The device to clean up.
-
-**/
-
-STATIC
-VOID
-EFIAPI
-VirtioMmioUninit (
- IN VIRTIO_MMIO_DEVICE *Device
- )
-{
- //
- // Note: This function mirrors VirtioMmioInit() that does not allocate any
- // resources - there's nothing to free here.
- //
-}
-
-EFI_STATUS
-VirtioMmioInstallDevice (
- IN PHYSICAL_ADDRESS BaseAddress,
- IN EFI_HANDLE Handle
- )
-{
- EFI_STATUS Status;
- VIRTIO_MMIO_DEVICE *VirtIo;
-
- if (!BaseAddress) {
- return EFI_INVALID_PARAMETER;
- }
- if (Handle == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Allocate VIRTIO_MMIO_DEVICE
- //
- VirtIo = AllocateZeroPool (sizeof (VIRTIO_MMIO_DEVICE));
- if (VirtIo == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- VirtIo->Signature = VIRTIO_MMIO_DEVICE_SIGNATURE;
-
- Status = VirtioMmioInit (BaseAddress, VirtIo);
- if (EFI_ERROR (Status)) {
- goto FreeVirtioMem;
- }
-
- //
- // Install VIRTIO_DEVICE_PROTOCOL to Handle
- //
- Status = gBS->InstallProtocolInterface (&Handle,
- &gVirtioDeviceProtocolGuid, EFI_NATIVE_INTERFACE,
- &VirtIo->VirtioDevice);
- if (EFI_ERROR (Status)) {
- goto UninitVirtio;
- }
-
- return EFI_SUCCESS;
-
-UninitVirtio:
- VirtioMmioUninit (VirtIo);
-
-FreeVirtioMem:
- FreePool (VirtIo);
- return Status;
-}
-
-EFI_STATUS
-VirtioMmioUninstallDevice (
- IN EFI_HANDLE DeviceHandle
- )
-{
- VIRTIO_DEVICE_PROTOCOL *VirtioDevice;
- VIRTIO_MMIO_DEVICE *MmioDevice;
- EFI_STATUS Status;
-
- Status = gBS->OpenProtocol (
- DeviceHandle, // candidate device
- &gVirtioDeviceProtocolGuid, // retrieve the VirtIo iface
- (VOID **)&VirtioDevice, // target pointer
- DeviceHandle, // requestor driver identity
- DeviceHandle, // requesting lookup for dev.
- EFI_OPEN_PROTOCOL_GET_PROTOCOL // lookup only, no ref. added
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Get the MMIO device from the VirtIo Device instance
- //
- MmioDevice = VIRTIO_MMIO_DEVICE_FROM_VIRTIO_DEVICE (VirtioDevice);
-
- //
- // Uninstall the protocol interface
- //
- Status = gBS->UninstallProtocolInterface (DeviceHandle,
- &gVirtioDeviceProtocolGuid, &MmioDevice->VirtioDevice
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Uninitialize the VirtIo Device
- //
- VirtioMmioUninit (MmioDevice);
- FreePool (MmioDevice);
-
- return EFI_SUCCESS;
-}
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