Windows 10 s USB-C and Power Delivery Architecture

Transcription

1 Windows 10 s USB-C and Power Delivery Architecture Jr-Chiang, Jaw Microsoft Corporation, Senior Software Engineer Developer Days 2016 Hong Kong October 19-20, 2016 October 19 ShenZhen Legendary USB Implementers Forum

2 Agenda: Windows 10 s USB-C and PD Architecture Introduction Windows 10 roles and responsibilities Hardware/firmware roles and responsibilities Windows 10 USB-C architecture UCSI (USB Type-C Connector System Software Interface) Ucm (USB Connector Manager) UcmTcpci (USB Connector Manager TCPCI extension) USB-C and USB PD Testing Testing guidance Requirements and tests for Win10 certification October 19 ShenZhen Legendary USB Implementers Forum

3 Introduction Windows 10 roles and responsibilities Hardware/firmware roles and responsibilities October 19 ShenZhen Legendary USB Implementers Forum

4 The goal USB-C just works When the user connects two USB Type-C devices together, it will always work as intended In order to achieve this goal, software, firmware, and hardware must all work together October 19 ShenZhen Legendary USB Implementers Forum

5 Why plug into Windows 10 s USB-C architecture? Windows will do the following: Provide a standard notification framework for users Support new features deeply integrated in the OS Provide interoperability with USB-C/PD devices Roll out regular updates to service the user experience Maintain backwards compatibility across Win10 updates Bottom line: Customers will have a more consistent and overall better experience if the system plugs into Windows 10 s USB Type-C architecture October 19 ShenZhen Legendary USB Implementers Forum

6 Windows 10 s roles and responsibilities Provides user experience/interface Troubleshooting messages Enable advanced users to configure USB-C/PD settings Enables new scenarios Examples: Discrete external GPUs Continuum for Windows Mobile Provides servicing mechanism through Windows Update Regular driver updates to improve quality/interoperability Maintain backwards compatibility while rolling out new features/fixes October 19 ShenZhen Legendary USB Implementers Forum

7 Hardware/firmware s roles and responsibilities Provide accurate state of hardware Provide ability for Windows to control the hardware Provide a set of default policies for common expected scenarios. Examples: Mobile devices that can either source or sink power should avoid sourcing more power than reasonable for a mobile device DRP devices that are meant to be used in a certain role should always attempt to get into that role October 19 ShenZhen Legendary USB Implementers Forum

8 Windows 10 USB-C Architecture Overview of the USB Connector Manager UCSI Ucm Class Extension UcmTcpci Class Extension October 19 ShenZhen Legendary USB Implementers Forum

9 USB Connector Manager What is USB Connector Manager (UCM)? Windows 10 driver stack that manages USB-C/PD for the system Gets hardware status and makes policy decisions How to plug into UCM? Option 1: Support UCSI (USB Type-C Connector System Software Interface) No driver development required (but EC-development is required) Option 2: Write a Ucm client driver Option 3: Write a UcmTcpci client driver Use the UcmTcpci driver sample (coming on Github) October 19 ShenZhen Legendary USB Implementers Forum

10 Microsoft component Windows 10 USB Architecture User Interface OEM/IHV component Interface layer Hardware USB Connector Manager (Ucm) USB Function Driver Stack USB Host Driver Stack Ucm Class Extension + Policy Manager UcmTcpci Class Extension UcmCx Client Interface UcmTcpciCx Client Interface UCSI Driver UcmCx Client Driver UcmTcpciCx Client Driver UCSI Custom SW-HW/FW Interface TCPCI-Compatible Interface USB Device Controller USB Host Controller USB-C Hardware/Firmware October 19 ShenZhen Legendary USB Implementers Forum

11 Choosing the Right Software Model For Your HW Use UCSI if the system has an Embedded Controller Use UcmTcpci if your design relies on a software Type-C Port Manager (TCPM) Use Ucm if the system cannot use UCSI nor UcmTcpci Least preferred option as it requires the most driver work Embedded Controller? Yes No Software Type-C Port Manager? Yes No UCSI UcmTcpci Ucm October 19 ShenZhen Legendary USB Implementers Forum

12 UCSI UCSI provides OS with hardware state UCSI provides OS the ability to control the hardware System firmware needs to implement default policies for common expected scenarios. Examples: Mobile devices that can either source or sink power should avoid sourcing more power than reasonable for a mobile device DRP devices that are meant to be used in a certain role should always attempt to get into that role USB Connector Manager (Ucm) User Interface Ucm Class Extension + Policy Manager UcmCx Client Interface UCSI Driver UcmCx Client Driver UCSI Custom SW-HW/FW Interface USB-C Hardware/Firmware Microsoft component OEM/IHV component Interface layer Hardware UcmTcpci Class Extension UcmTcpciCx Client Interface UcmTcpciCx Client Driver TCPCI-Compatible Interface October 19 ShenZhen Legendary USB Implementers Forum

13 SoC/CPU UCSI Bring-up Example PD controller tasks: Implement PD policy engine, protocol layer, physical layer Provide control/query I2C (or other bus) interface hooks for EC Embedded controller tasks: Implement default platform policy for the USB-C ports on the system Implement I2C (or other bus) interface to PD controller Implement UCSI interface to ACPI Implement SCI, update EC s mailbox Communicate status change, provide role swap hooks, etc BIOS ACPI tasks: Report USB-C connector to the OS Implement UCSI mailbox paradigm Initialization of EC s mailbox _DSM method to enable OS to access the mailbox Display Source USB Dual Role Controller DP Out SS HS DisplayPort SS/DP Mux SSTx+/-, SSRx+/- PD Controller CC1, CC2 I2C Alt Mode Control SSTx+/-, SSRx+/- D+/D- Embedded Controller Charge control Vbus, Vconn Control Vbus, Vconn Notify SCI, EC Events UCSI ACPI Charge control BC 1.2 Detection D+/D- I/O USB Type-C Connector October 19 ShenZhen Legendary USB Implementers Forum

14 Ucm Class Extension Ucm is the OS USB-C/PD policy manager Requires a Ucm client driver to provide hardware status and control hooks Flexible model allows Ucm client driver to be written to work with any hardware design USB Connector Manager (Ucm) User Interface Ucm Class Extension + Policy Manager UcmCx Client Interface UCSI Driver UcmCx Client Driver Microsoft component OEM/IHV component Interface layer Hardware UcmTcpci Class Extension UcmTcpciCx Client Interface UcmTcpciCx Client Driver UCSI Custom SW-HW/FW Interface TCPCI-Compatible Interface USB-C Hardware/Firmware October 19 ShenZhen Legendary USB Implementers Forum

15 SoC/CPU Ucm Bring-up Example PD controller tasks: Implement PD policy engine, protocol layer, physical layer Provide interface hooks for the Ucm client driver Ucm client driver tasks: Write an Ucm client driver that implements the Ucm APIs Set default platform policy Implement interface to PD controller Implement UcmCx framework APIs Details on MSDN ACPI tasks: Report USB-C connector s capabilities in ACPI Display Source SS/DP Mux SSTx+/-, SSRx+/- USB Dual Role Controller DP Out SS HS DisplayPort Alt Mode Control CC1, CC2 SSTx+/-, SSRx+/- D+/D- PD Controller (not TCPC) Charge control Vbus, Vconn Control Vbus, Vconn Ucm SPI, I2C, or other interface Charge control BC 1.2 Detection D+/D- USB Type-C Connector October 19 ShenZhen Legendary USB Implementers Forum

16 UcmTcpci Class Extension UcmTcpci is an inbox extension to Ucm UcmTcpci is a software-based TCPM implementation Implements PD policy engine and protocol layer Designed to be used with platforms with a TCPC, but no HW TCPM UcmTcpci client driver can be implemented as a simple I2C class driver Sample driver coming soon on GitHub USB Connector Manager (Ucm) UCSI Driver UCSI User Interface Ucm Class Extension + Policy Manager UcmCx Client Interface UcmCx Client Driver Custom SW-HW/FW Interface USB-C Hardware/Firmware Microsoft component OEM/IHV component Interface layer Hardware UcmTcpci Class Extension UcmTcpciCx Client Interface UcmTcpciCx Client Driver TCPCI-Compatible Interface October 19 ShenZhen Legendary USB Implementers Forum

17 SoC/CPU UcmTcpci Bring-up Example Type-C Port Controller tasks: Implement I2C TCPC interface Implement physical layer, CC-logic UcmTcpci Client Driver tasks: Write an I2C class driver that implements the UcmTcpci APIs Translate I2C commands to UcmTcpci APIs Sample driver and walkthrough will be available ACPI tasks: Report USB-C connector s capabilities in ACPI Other tasks: If PD charging before the OS is required, separate charging silicon will be required Display Source SS/DP Mux SSTx+/-, SSRx+/- USB Dual Role Controller DP Out SS HS DisplayPort Alt Mode Control CC1, CC2 SSTx+/-, SSRx+/- D+/D- Type-C Port Controller Charge control Vbus, Vconn Control Vbus, Vconn UcmTcpci I2C Charge control BC 1.2 Detection D+/D- USB Type-C Connector October 19 ShenZhen Legendary USB Implementers Forum

18 USB-C and USB PD Testing Testing guidance Requirements and Tests for Win10 Certification October 19 ShenZhen Legendary USB Implementers Forum

19 Testing guidance Reliable and interoperable hardware results in happy customers Microsoft s portal for USB testing resources: Test tools Testing procedures Test documentation Troubleshooting bring-up and development issues: Give us feedback on how we can better enable you to build highquality, interoperable hardware! October 19 ShenZhen Legendary USB Implementers Forum

20 Test tools SuperMUTT Simulates USB traffic for USB Host testing USB 2.0 and USB 3.0 USB-C connection exerciser 1:4 switch for automating interop and scenario validation Enables automated switching between hosts, chargers, peripherals Monitors charging current and direction USB-C MUTT (in development) Extends capabilities of SuperMUTT with USB-C Tests Power Delivery state machine, Alternate Modes, role swapping October 19 ShenZhen Legendary USB Implementers Forum

21 Workshops and Certification Programs Interop guidance Recommend following the manual interop procedure on MSDN: Attend interop events hosted by the standards bodies (e.g. USB-IF, VESA, etc) Industry Compliance Attend Power Delivery and USB-C compliance workshops hosted by the standards bodies (e.g. USB-IF, VESA, etc) Windows Hardware Compatibility Certification New USB-C/PD HLK tests are required for Windows hardware compatibility certification Microsoft will publish a list of recommended silicon that is compatible with Windows October 19 ShenZhen Legendary USB Implementers Forum

22 Requirements and Tests for Win10 Certification USB-C/PD Requirements: All USB-C ports are correctly declared in ACPI in _UPC method All required UCSI features must be implemented correctly. See UCSI specification for the list of UCSI features Win10 also requires several UCSI features that are marked as Optional in the UCSI specification Ucm APIs must be implemented correctly. See MSDN for the list of APIs and guidance for how to implement those APIs USB-C/PD Tests: USB-C ACPI Validation Test UCSI Command Tests Power, Data Role Swap Tests Leverage the USB-C Connection Exerciser October 19 ShenZhen Legendary USB Implementers Forum

23 Q&A October 19 ShenZhen Legendary USB Implementers Forum

24 Additional information General USB Type-C Information: Windows support for USB Type-C connectors UCSI: UCSI rev1.0 specification MSDN UCSI guidance UCSI BIOS enabling guide USB Connector Manager (Ucm): USB Connector Manager Driver bring-up guidance USB Connector Manager Class Extension API reference October 19 ShenZhen Legendary USB Implementers Forum

25 Additional information Win10 Hardware Compatibility Requirements: Win10 Hardware Compatibility Tests: How to set up and run the Win10 USB-C compatibility tests: USB testing resources: Test tools: Microsoft USB Test Tools Test tool questions? October 19 ShenZhen Legendary USB Implementers Forum