0a568ccbcb
patch maps the host address to a device address for buffers (including rings, device specifc request and response pointed by vring descriptor, and any further memory reference by those request and response). Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> [lersek@redhat.com: return EFI_DEVICE_ERROR if mapping fails in GetRNG] Reviewed-by: Laszlo Ersek <lersek@redhat.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
/** @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
|