/** @file | |
Private definitions of the VirtioRng RNG driver | |
Copyright (C) 2016, Linaro Ltd. | |
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_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 |