VirtioMmioDevice.c File Reference

#include <Library/BaseMemoryLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include "VirtioMmioDevice.h"

Go to the source code of this file.

Functions
STATIC EFI_STATUS EFIAPI	VirtioMmioInit (IN PHYSICAL_ADDRESS BaseAddress, IN OUT VIRTIO_MMIO_DEVICE *Device)
STATIC VOID EFIAPI	VirtioMmioUninit (IN VIRTIO_MMIO_DEVICE *Device)
EFI_STATUS	VirtioMmioInstallDevice (IN PHYSICAL_ADDRESS BaseAddress, IN EFI_HANDLE Handle)
EFI_STATUS	VirtioMmioUninstallDevice (IN EFI_HANDLE DeviceHandle)

Variables
STATIC CONST VIRTIO_DEVICE_PROTOCOL	mMmioDeviceProtocolTemplate

Detailed Description

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

Copyright (C) 2013, ARM Ltd. Copyright (C) 2017, AMD Inc. All rights reserved.

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

Definition in file VirtioMmioDevice.c.

Function Documentation

VirtioMmioInit()

STATIC EFI_STATUS EFIAPI VirtioMmioInit	(	IN PHYSICAL_ADDRESS	BaseAddress,
		IN OUT VIRTIO_MMIO_DEVICE *	Device
	)

Initialize the VirtIo MMIO Device

Parameters

[in]	BaseAddress	Base Address of the VirtIo MMIO Device
[in,out]	Device	The driver instance to configure.

Return values

EFI_SUCCESS	Setup complete.
EFI_UNSUPPORTED	The driver is not a VirtIo MMIO device.

Definition at line 55 of file VirtioMmioDevice.c.

VirtioMmioInstallDevice()

EFI_STATUS VirtioMmioInstallDevice	(	IN PHYSICAL_ADDRESS	BaseAddress,
		IN EFI_HANDLE	Handle
	)

Initialize VirtIo Device and Install VIRTIO_DEVICE_PROTOCOL protocol

Parameters

[in]	BaseAddress	Base Address of the VirtIo MMIO Device
[in]	Handle	Handle of the device the driver should be attached to.

Return values

EFI_SUCCESS	The VirtIo Device has been installed successfully.
EFI_OUT_OF_RESOURCES	The function failed to allocate memory required by the Virtio MMIO device initialization.
EFI_UNSUPPORTED	BaseAddress does not point to a VirtIo MMIO device.

Returns

Status code returned by InstallProtocolInterface Boot Service function.

Definition at line 131 of file VirtioMmioDevice.c.

VirtioMmioUninit()

STATIC VOID EFIAPI VirtioMmioUninit

(

IN VIRTIO_MMIO_DEVICE *

Device

)

Uninitialize the internals of a virtio-mmio device that has been successfully set up with VirtioMmioInit().

Parameters

[in,out]

Device

The device to clean up.

Definition at line 120 of file VirtioMmioDevice.c.

VirtioMmioUninstallDevice()

EFI_STATUS VirtioMmioUninstallDevice

(

IN EFI_HANDLE

Handle

)

Uninstall the VirtIo Device

Parameters

[in]

Handle

Handle of the device where the VirtIo Device protocol should have been installed.

Return values

EFI_SUCCESS

The device has been un-initialized successfully.

Returns

Status code returned by UninstallProtocolInterface Boot Service function.

Definition at line 186 of file VirtioMmioDevice.c.

Variable Documentation

mMmioDeviceProtocolTemplate

STATIC CONST VIRTIO_DEVICE_PROTOCOL mMmioDeviceProtocolTemplate

Initial value:

= {
  0,                                       
  0,                                       
  VirtioMmioGetDeviceFeatures,             
  VirtioMmioSetGuestFeatures,              
  VirtioMmioSetQueueAddress,               
  VirtioMmioSetQueueSel,                   
  VirtioMmioSetQueueNotify,                
  VirtioMmioSetQueueAlignment,             
  VirtioMmioSetPageSize,                   
  VirtioMmioGetQueueSize,                  
  VirtioMmioSetQueueSize,                  
  VirtioMmioGetDeviceStatus,               
  VirtioMmioSetDeviceStatus,               
  VirtioMmioDeviceWrite,                   
  VirtioMmioDeviceRead,                    
  VirtioMmioAllocateSharedPages,           
  VirtioMmioFreeSharedPages,               
  VirtioMmioMapSharedBuffer,               
  VirtioMmioUnmapSharedBuffer              
}

Definition at line 17 of file VirtioMmioDevice.c.