Feng, Star, et al, Any comments, questions or concerns?
Thanks, Leo. > -----Original Message----- > From: Duran, Leo > Sent: Friday, January 13, 2017 4:14 PM > To: [email protected] > Cc: [email protected]; [email protected]; [email protected]; > [email protected]; [email protected]; [email protected]; > [email protected]; Singh, Brijesh <[email protected]>; Duran, > Leo <[email protected]> > Subject: [RFC v2 0/6] DxeBmDmaLib (BmDmaLib class) library > > This series provides an abstraction layer for Bus-master DMA operations as > currently implemented by the PciHostBridgeDxe driver. The intent is to then > allow override of this library as may be required by specific hardware > implementations, such as AMD's Secure Encrypted Virtualization (SEV). > > Please refer to the RFC discussion for SEV here: > http://marc.info/?l=linux-mm&m=147190814023863&w=2 > > This new (BmDmaLib class) library is cloned from the existing DmaLib with an > additional DmaAbove4GB (BOOLEAN) parameter for the Map and Allocate > interfaces, so that decisions can be made about the need to allocate DMA > buffers below the 4GB boundary. > > NOTE: The abstraction layer is intended for Bus-master (DMA capable) > devices, and not restricted to the PCI Root-Bridge use-case. Thus the > rationale for not using EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION > types. > > Changes since RFC v1: > - Patch 1: Restrict LIBRARY_CLASS to DXE_DRIVER in INF file. > - Patches 2 through 5: > Change Subject: XxxPkg: Resolve BmDmaLib class for PciHostBridgeDxe > driver > Add Reviewed-by: Laszlo Ersek <[email protected]> > - Add clarifications from RFC discussion to this cover letter. > > Leo Duran (6): > MdeModulePkg: Add DxeBmDmaLib (BmDmaLib class) library > ArmVirtPkg: Resolve BmDmaLib class for PciHostBridgeDxe driver > CorebootPayloadPkg: Resolve BmDmaLib class for PciHostBridgeDxe driver > MdeModulePkg: Resolve BmDmaLib class for PciHostBridgeDxe driver > OvmfPkg: Resolve BmDmaLib class for PciHostBridgeDxe driver > MdeModulePkg: Modify PciHostBridgeDxe to use new BmDmaLib library > > ArmVirtPkg/ArmVirtQemu.dsc | 1 + > ArmVirtPkg/ArmVirtQemuKernel.dsc | 1 + > CorebootPayloadPkg/CorebootPayloadPkgIa32.dsc | 1 + > CorebootPayloadPkg/CorebootPayloadPkgIa32X64.dsc | 1 + > .../Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf | 1 + > .../Bus/Pci/PciHostBridgeDxe/PciRootBridge.h | 13 +- > .../Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c | 272 > +++++---------------- > MdeModulePkg/MdeModulePkg.dsc | 3 + > OvmfPkg/OvmfPkgIa32.dsc | 1 + > OvmfPkg/OvmfPkgIa32X64.dsc | 1 + > OvmfPkg/OvmfPkgX64.dsc | 1 + > 11 files changed, 76 insertions(+), 220 deletions(-) > > -- > 1.9.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
