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/** @file
Private definitions of the VirtIo 1.0 driver.
Copyright (C) 2016, Red Hat, Inc.
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.
**/
#ifndef _VIRTIO_1_0_DXE_H_
#define _VIRTIO_1_0_DXE_H_
#include <Protocol/PciIo.h>
#include <Protocol/VirtioDevice.h>
#define VIRTIO_1_0_SIGNATURE SIGNATURE_32 ('V', 'I', 'O', '1')
//
// Type of the PCI BAR that contains a VirtIo 1.0 config structure.
//
typedef enum {
Virtio10BarTypeMem,
Virtio10BarTypeIo
} VIRTIO_1_0_BAR_TYPE;
//
// The type below defines the access to a VirtIo 1.0 config structure.
//
typedef struct {
BOOLEAN Exists; // The device exposes this structure
VIRTIO_1_0_BAR_TYPE BarType;
UINT8 Bar;
UINT32 Offset; // Offset into BAR where structure starts
UINT32 Length; // Length of structure in BAR.
} VIRTIO_1_0_CONFIG;
typedef struct {
UINT32 Signature;
VIRTIO_DEVICE_PROTOCOL VirtIo;
EFI_PCI_IO_PROTOCOL *PciIo;
UINT64 OriginalPciAttributes;
VIRTIO_1_0_CONFIG CommonConfig; // Common settings
VIRTIO_1_0_CONFIG NotifyConfig; // Notifications
UINT32 NotifyOffsetMultiplier;
VIRTIO_1_0_CONFIG SpecificConfig; // Device specific settings
} VIRTIO_1_0_DEV;
#define VIRTIO_1_0_FROM_VIRTIO_DEVICE(Device) \
CR (Device, VIRTIO_1_0_DEV, VirtIo, VIRTIO_1_0_SIGNATURE)
#endif // _VIRTIO_1_0_DXE_H_
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