diff options
Diffstat (limited to 'OvmfPkg/VirtioRngDxe/VirtioRng.h')
| -rw-r--r-- | OvmfPkg/VirtioRngDxe/VirtioRng.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/OvmfPkg/VirtioRngDxe/VirtioRng.h b/OvmfPkg/VirtioRngDxe/VirtioRng.h new file mode 100644 index 0000000000..844550a00c --- /dev/null +++ b/OvmfPkg/VirtioRngDxe/VirtioRng.h @@ -0,0 +1,46 @@ +/** @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 +} VIRTIO_RNG_DEV; + +#define VIRTIO_ENTROPY_SOURCE_FROM_RNG(RngPointer) \ + CR (RngPointer, VIRTIO_RNG_DEV, Rng, VIRTIO_RNG_SIG) + +#endif |