diff options
Diffstat (limited to 'OvmfPkg/Include/Library/VirtioLib.h')
| -rw-r--r-- | OvmfPkg/Include/Library/VirtioLib.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/OvmfPkg/Include/Library/VirtioLib.h b/OvmfPkg/Include/Library/VirtioLib.h index 36527a523f..decd4418af 100644 --- a/OvmfPkg/Include/Library/VirtioLib.h +++ b/OvmfPkg/Include/Library/VirtioLib.h @@ -2,7 +2,7 @@ Declarations of utility functions used by virtio device drivers.
- Copyright (C) 2012, Red Hat, Inc.
+ Copyright (C) 2012-2016, Red Hat, Inc.
This program and the accompanying materials are licensed and made available
under the terms and conditions of the BSD License which accompanies this
@@ -167,6 +167,12 @@ VirtioAppendDesc ( Indices->HeadDescIdx identifies the head descriptor
of the descriptor chain.
+ @param[out] UsedLen On success, the total number of bytes, consecutively
+ across the buffers linked by the descriptor chain,
+ that the host wrote. May be NULL if the caller
+ doesn't care, or can compute the same information
+ from device-specific request structures linked by the
+ descriptor chain.
@return Error code from VirtIo->SetQueueNotify() if it fails.
@@ -179,7 +185,8 @@ VirtioFlush ( IN VIRTIO_DEVICE_PROTOCOL *VirtIo,
IN UINT16 VirtQueueId,
IN OUT VRING *Ring,
- IN DESC_INDICES *Indices
+ IN DESC_INDICES *Indices,
+ OUT UINT32 *UsedLen OPTIONAL
);
#endif // _VIRTIO_LIB_H_
|