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Every virtio GPU command used by VirtioGpuDxe is synchronous and formatted as a two-descriptor chain: request, response. The internal workhorse function that all the command-specific functions call for such messaging is VirtioGpuSendCommand(). In VirtioGpuSendCommand(), map the request from system memory to bus master device address for BusMasterRead operation, and map the response from system memory to bus master device address for BusMasterWrite operation. Pass the bus master device addresses to VirtioAppendDesc(). (See also commit 4b725858de68, "OvmfPkg/VirtioLib: change the parameter of VirtioAppendDesc() to UINT64", 2017-08-23.) Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Brijesh Singh <brijesh.singh@amd.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Tested-by: Brijesh Singh <brijesh.singh@amd.com>
EDK II Project
A modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications from www.uefi.org.
Contributions to the EDK II open source project are covered by the TianoCore Contribution Agreement 1.1
The majority of the content in the EDK II open source project uses a BSD 2-Clause License. The EDK II open source project contains the following components that are covered by additional licenses:
- AppPkg/Applications/Python/Python-2.7.2/Tools/pybench
- AppPkg/Applications/Python/Python-2.7.2
- AppPkg/Applications/Python/Python-2.7.10
- BaseTools/Source/C/BrotliCompress
- MdeModulePkg/Library/BrotliCustomDecompressLib
- OvmfPkg
- CryptoPkg/Library/OpensslLib/openssl
The EDK II Project is composed of packages. The maintainers for each package are listed in Maintainers.txt.