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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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