mirror of https://github.com/acidanthera/audk.git
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
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/** @file
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Internal macro definitions, type definitions, and function declarations for
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the Virtio Filesystem device driver.
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Copyright (C) 2020, Red Hat, Inc.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef VIRTIO_FS_DXE_H_
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#define VIRTIO_FS_DXE_H_
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#include <Base.h> // SIGNATURE_64()
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#include <Library/DebugLib.h> // CR()
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#include <Protocol/SimpleFileSystem.h> // EFI_SIMPLE_FILE_SYSTEM_PROTOCOL
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#include <Protocol/VirtioDevice.h> // VIRTIO_DEVICE_PROTOCOL
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#define VIRTIO_FS_SIG SIGNATURE_64 ('V', 'I', 'R', 'T', 'I', 'O', 'F', 'S')
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//
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// Main context structure, expressing an EFI_SIMPLE_FILE_SYSTEM_PROTOCOL
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// interface on top of the Virtio Filesystem device.
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//
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typedef struct {
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//
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// Parts of this structure are initialized / torn down in various functions
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// at various call depths. The table to the right should make it easier to
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// track them.
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//
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// field init function init depth
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// ----------- ------------------ ----------
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UINT64 Signature; // DriverBindingStart 0
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VIRTIO_DEVICE_PROTOCOL *Virtio; // DriverBindingStart 0
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EFI_SIMPLE_FILE_SYSTEM_PROTOCOL SimpleFs; // DriverBindingStart 0
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} VIRTIO_FS;
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#define VIRTIO_FS_FROM_SIMPLE_FS(SimpleFsReference) \
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CR (SimpleFsReference, VIRTIO_FS, SimpleFs, VIRTIO_FS_SIG);
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//
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// EFI_SIMPLE_FILE_SYSTEM_PROTOCOL member functions for the Virtio Filesystem
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// driver.
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//
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EFI_STATUS
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EFIAPI
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VirtioFsOpenVolume (
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IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,
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OUT EFI_FILE_PROTOCOL **Root
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);
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#endif // VIRTIO_FS_DXE_H_
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