USB4™ on Windows
USB4? on Windows
Rajib Dutta ¨C Software Engineer, Microsoft
Matt Chung ¨C Program Manager, Microsoft
Xavier Chu ¨C Thunderbolt? Engineering Manager, Intel
USB Developer Days 2019 ¨C Taipei
November 19, 2019
USB Type-C?, USB-C? and USB4? are trademarks of the Universal Serial Bus Implementers Forum (USB-IF). Thunderbolt? is a trademark of Intel
Corporation. All product names are trademarks, registered trademarks, or service marks of their respective owners.
USB Implementers Forum ? 2019
? Support for USB4? on Windows
? Goals
? Introduction to Software Connection Manager (CM)
? Software Architecture
Presentation
Agenda
? Support for Firmware Update
? Pre-boot support
? Software CM in pre-boot
? Switching between SW & FW CM
? Mapping Host Interface to tunneled ports
?
?
?
?
2
Security
Requirements and Validation
Timelines
Q&A
USB Implementers Forum ? 2019
? Support for USB4? on Windows
? Goals
? Introduction to Software Connection Manager (CM)
? Software Architecture
Presentation
Agenda
? Support for Firmware Update
? Pre-boot support
? Software CM in pre-boot
? Switching between SW & FW CM
? Mapping Host Interface to tunneled ports
?
?
?
?
3
Security
Requirements and Validation
Timelines
Q&A
USB Implementers Forum ? 2019
Support for USB4? on Windows
? Goals
? Software based connection manager on Windows
? Avoid fragmentation with different FW based CM implementations in the market
? Interoperability with all USB4 spec compliant host and device routers
? Provide compatibility to existing Thunderbolt? 3 peripherals
? Thunderbolt 3 host routers will continue to use Firmware based connection manager
? Support firmware update without requiring third-party software
? Allow OS and User policies to manage the USB4 bandwidth among different
devices/protocols
? No changes required in USB class/client drivers, PCI function drivers or graphics drivers to
work over USB4
? Leverage IOMMU & DMA remapping for protection against physical DMA attacks
4
USB Implementers Forum ? 2019
Software based Connection Manager in Windows
? Advantages vs FW based CM
? Avoid fragmentation
? Better interoperability
? Ease of update
? Apply OS/User defined security policies
? Bandwidth management
? Power coordination among different protocol stacks
5
USB Implementers Forum ? 2019
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