RapidIO Subsystem Guide

Author

Matt Porter

Introduction

RapidIO is a high speed switched fabric interconnect with features aimed at the embedded market. RapidIO provides support for memory-mapped I/O as well as message-based transactions over the switched fabric network. RapidIO has a standardized discovery mechanism not unlike the PCI bus standard that allows simple detection of devices in a network.

This documentation is provided for developers intending to support RapidIO on new architectures, write new drivers, or to understand the subsystem internals.

Known Bugs and Limitations

Bugs

None. ;)

Limitations

  1. Access/management of RapidIO memory regions is not supported

  2. Multiple host enumeration is not supported

RapidIO driver interface

Drivers are provided a set of calls in order to interface with the subsystem to gather info on devices, request/map memory region resources, and manage mailboxes/doorbells.

Functions

Error

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Error

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Internals

This chapter contains the autogenerated documentation of the RapidIO subsystem.

Structures

Error

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Enumeration and Discovery

Error

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Driver functionality

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Device model support

Error

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PPC32 support

Error

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Credits

The following people have contributed to the RapidIO subsystem directly or indirectly:

  1. Matt Portermporter@kernel.crashing.org

  2. Randy Vinsonrvinson@mvista.com

  3. Dan Malekdan@embeddedalley.com

The following people have contributed to this document:

  1. Matt Portermporter@kernel.crashing.org