mirror of https://github.com/acidanthera/audk.git
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
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/** @file
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Private definitions of the VirtIo 1.0 driver.
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Copyright (C) 2016, Red Hat, Inc.
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
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WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _VIRTIO_1_0_DXE_H_
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#define _VIRTIO_1_0_DXE_H_
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#include <Protocol/PciIo.h>
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#include <Protocol/VirtioDevice.h>
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#define VIRTIO_1_0_SIGNATURE SIGNATURE_32 ('V', 'I', 'O', '1')
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//
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// Type of the PCI BAR that contains a VirtIo 1.0 config structure.
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//
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typedef enum {
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Virtio10BarTypeMem,
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Virtio10BarTypeIo
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} VIRTIO_1_0_BAR_TYPE;
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//
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// The type below defines the access to a VirtIo 1.0 config structure.
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//
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typedef struct {
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BOOLEAN Exists; // The device exposes this structure
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VIRTIO_1_0_BAR_TYPE BarType;
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UINT8 Bar;
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UINT32 Offset; // Offset into BAR where structure starts
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UINT32 Length; // Length of structure in BAR.
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} VIRTIO_1_0_CONFIG;
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typedef struct {
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UINT32 Signature;
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VIRTIO_DEVICE_PROTOCOL VirtIo;
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EFI_PCI_IO_PROTOCOL *PciIo;
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UINT64 OriginalPciAttributes;
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VIRTIO_1_0_CONFIG CommonConfig; // Common settings
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VIRTIO_1_0_CONFIG NotifyConfig; // Notifications
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UINT32 NotifyOffsetMultiplier;
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VIRTIO_1_0_CONFIG SpecificConfig; // Device specific settings
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} VIRTIO_1_0_DEV;
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#define VIRTIO_1_0_FROM_VIRTIO_DEVICE(Device) \
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CR (Device, VIRTIO_1_0_DEV, VirtIo, VIRTIO_1_0_SIGNATURE)
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#endif // _VIRTIO_1_0_DXE_H_
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