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xHCI eLearning Course
Instructor(s): Jay Trodden
Number of Modules: 11
Subscription Length: 90 days
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eXtensible Host Controller Interface (xHCI) eLearning Course Info
What's Included?
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xHCI eLearning modules
(unlimited access for 90 days) |
PDF of Course Slides
(yours to keep, does not expire) |
USB 3.0 eBook
(yours to keep, does not expire) |
Benefits of eLearning:
- Cost Effective - Get the same information delivered in a live MindShare class at a fraction of the cost
- Available 24/7 - MindShare eLearning courses are available when and where you need them
- Learn at Your Pace - MindShare eLearning courses are self-paced, so you can proceed when you're ready
- Access to the Instructor - Ask questions to the MindShare Instructor that taught the course
You Will Learn:
- Details regarding the implementation and operation of the eXtensible Host Controller Interface (xHCI)
- How to initialize and configure an xHC for runtime operation
- The behavior and purpose of all the data structures (PCI config space, MMIO space and system memory structures) associated with an xHC including how to explore them on a live running system
- The events that occur during an attach and remove event
- And much more
Course Outline:
- Module 1: Introduction to xHCI
- xHCI motivations, hardware/software stack, USB 3.1 attachment rules, dual bus topology, xHC root hub ports, special considerations for USB2.0 and ESS, Bus Instances (BIs), transaction scheduling
- Module 2: xHC PCI Configuration Registers
- xHCI resource requirements, PCI type 0 header, power management capability structure, MSI and MSI-X, and more, viewing actual xHCI implementation with Arbor
- Module 3: xHC MMIO Registers
- MMIO structures, HC capability registers (HCSPARAMS, etc.), HC operational registers (USBCMD, USBSTS, PORTSC, etc.), HC runtime registers (MFINDEX, interrupt registers, etc.), doorbell registers, extended capability registers
- Module 4: Slot IDs, Doorbells, and Scheduling
- Intro to work rings, slot ID basics, doorbell info (slot id / EP / stream info), locating device context, walk-through of what happens when doorbell rings, viewing attachment status of USB devices in real-time with Arbor
- Module 5: Command Ring Memory Structure
- Command ring TRBs (transfer request blocks), TRB types, command ring pointers, managing work in the command ring, using the enqueue and dequeue pointers, link TRBs, interaction between command ring and event ring
- Module 6: Event Ring Memory Structures
- Purpose of event rings, segmented rings (ERST - Event Ring Segment Table), TRBs, enqueue / dequeue pointers, ERST entry format
- Module 7: Device Context Memory Structures
- Need for device contexts, tracking device contexts, slot context key fields (route string, speed, max exit latency, interrupter target, etc.), endpoint context key fields (endpoint state, endpoint type, max burst size, max packet size, etc.), exploring an active device context using Arbor on a Windows system
- Module 8: Transfer Ring Memory Structures
- Purpose of transfer rings, locating transfer rings, enqueue / dequeue model, transfer descriptors (TDs) and TRBs, TDs with chained TRBs, normal TRB fields, standard event ring TRB and fields, isochronous TRB and fields, control transfer TRB and fields
- Module 9: xHCI Interrupts
- Interrupt and event ring relationship, MSI configuration and behavior, MSI-X configuration and behavior, interrupt management / moderation
- Module 10: xHC Reset and Initialization
- Chip hardware reset, software host controller resets (HCRST and LHCRST), PCI config space initialization (headers and BARs, power management, PCIe, MSI / MSI-X), extended capability registers, MMIO space initialization (HC capability, operational and runtime registers, etc.)
- Module 11: Device Attachment and Initialization
- Describes the sequence of events that occur between the time when a device is attached and when it is ready for use
 | Course Modules |
| Module | Length | | Module 1: Introduction to xHCI | 68 minutes | | Module 2: xHC PCI Configuration Registers | 46 minutes | | Module 3: xHC MMIO Registers | 62 minutes | | Module 4: Slot IDs, Doorbells, and Scheduling | 42 minutes | | Module 5: Command Ring Memory Structure | 48 minutes | | Module 6: Event Ring Memory Structures | 32 minutes | | Module 7: Device Context Memory Structures | 51 minutes | | Module 8: Transfer Ring Memory Structures | 55 minutes | | Module 9: xHCI Interrupts | 33 minutes | | Module 10: xHC Reset and Initialization | 24 minutes | | Module 11: Device Attachment and Initialization | 40 minutes | | |
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