| 1 | /** @file
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| 2 |
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| 3 | Private definitions of the VirtioRng RNG driver
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| 4 |
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| 5 | Copyright (C) 2016, Linaro Ltd.
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| 6 |
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| 7 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 8 |
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| 9 | **/
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| 10 |
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| 11 | #ifndef _VIRTIO_RNG_DXE_H_
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| 12 | #define _VIRTIO_RNG_DXE_H_
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| 13 |
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| 14 | #include <Protocol/ComponentName.h>
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| 15 | #include <Protocol/DriverBinding.h>
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| 16 | #include <Protocol/Rng.h>
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| 17 |
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| 18 | #include <IndustryStandard/Virtio.h>
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| 19 |
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| 20 | #define VIRTIO_RNG_SIG SIGNATURE_32 ('V', 'R', 'N', 'G')
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| 21 |
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| 22 | typedef struct {
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| 23 | //
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| 24 | // Parts of this structure are initialized / torn down in various functions
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| 25 | // at various call depths. The table to the right should make it easier to
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| 26 | // track them.
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| 27 | //
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| 28 | // field init function init depth
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| 29 | // ---------------- ------------------ ----------
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| 30 | UINT32 Signature; // DriverBindingStart 0
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| 31 | VIRTIO_DEVICE_PROTOCOL *VirtIo; // DriverBindingStart 0
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| 32 | EFI_EVENT ExitBoot; // DriverBindingStart 0
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| 33 | VRING Ring; // VirtioRingInit 2
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| 34 | EFI_RNG_PROTOCOL Rng; // VirtioRngInit 1
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| 35 | VOID *RingMap; // VirtioRingMap 2
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| 36 | } VIRTIO_RNG_DEV;
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| 37 |
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| 38 | #define VIRTIO_ENTROPY_SOURCE_FROM_RNG(RngPointer) \
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| 39 | CR (RngPointer, VIRTIO_RNG_DEV, Rng, VIRTIO_RNG_SIG)
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| 40 |
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| 41 | #endif
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