USB host controller testing with MUTT devices
The goal of controller testing is to generate a complete set of possible traffic patterns from hubs and devices. This allows the internal state of controller and its firmware to be fully tested. MUTT devices can help the test by providing an automated method to generate various possible protocol scenarios.
Before you run the MUTT test commands at an elevated command prompt, make sure that you meet the following requirements:
- The test system must be running the latest version of Windows 8.
- Set up and configure the MUTT device and install the firmware. For more information, see How to prepare the test system to run MUTT test tools.
- USB IF electrical tests. All of our tests are protocol and state focused. See USB-IF Compliance Program for more information on electrical tests.
- MUTT stress and transfer tests included in the MUTT software package with MUTT devices connected in the suggested configurations for USB controllers. RunTest.bat runs both the stress and transfer tests. See How to run stress and transfer performance tests for MUTT devices.
- SuperMUTT performance tests. See How to run Super MUTT performance tests.
- Device Fundamental test. For more information, see How to run devfund tests in Visual Studio for MUTT devices.
- Controller Windows Hardware Certification Kit tests. For more information, see USB-IF Certification Validation Test (Controller).
- Manual test cases for host controllers, as found in Windows Test Guidance document in the section.
Consider the following configurations for xHCI controllers under test:
- Attach MUTT devices to all available ports.
- Divide available ports such that there are equal numbers of SuperMUTT and MUTT Pack devices. For MUTT Packs, attach downstream MUTT devices.
- Attach SuperMUTTs to half the available ports. Attach SuperMUTT Pack devices to the remaining ports. For SuperMUTT Packs, attach downstream SuperMUTT devices.
- You can have a complex topology. For example, consider a controller with four ports. The following image shows an example topology.