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- /** @file
- Private definitions of the VirtioRng RNG driver
- Copyright (C) 2016, Linaro Ltd.
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #ifndef _VIRTIO_RNG_DXE_H_
- #define _VIRTIO_RNG_DXE_H_
- #include <Protocol/ComponentName.h>
- #include <Protocol/DriverBinding.h>
- #include <Protocol/Rng.h>
- #include <IndustryStandard/Virtio.h>
- #define VIRTIO_RNG_SIG SIGNATURE_32 ('V', 'R', 'N', 'G')
- typedef struct {
- //
- // Parts of this structure are initialized / torn down in various functions
- // at various call depths. The table to the right should make it easier to
- // track them.
- //
- // field init function init depth
- // ---------------- ------------------ ----------
- UINT32 Signature; // DriverBindingStart 0
- VIRTIO_DEVICE_PROTOCOL *VirtIo; // DriverBindingStart 0
- EFI_EVENT ExitBoot; // DriverBindingStart 0
- VRING Ring; // VirtioRingInit 2
- EFI_RNG_PROTOCOL Rng; // VirtioRngInit 1
- VOID *RingMap; // VirtioRingMap 2
- } VIRTIO_RNG_DEV;
- #define VIRTIO_ENTROPY_SOURCE_FROM_RNG(RngPointer) \
- CR (RngPointer, VIRTIO_RNG_DEV, Rng, VIRTIO_RNG_SIG)
- #endif
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