mirror of https://gitee.com/openkylin/linux.git
108 lines
2.2 KiB
ReStructuredText
108 lines
2.2 KiB
ReStructuredText
=======================
|
|
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
|
|
---------
|
|
|
|
.. kernel-doc:: include/linux/rio_drv.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/rapidio/rio-driver.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/rapidio/rio.c
|
|
:export:
|
|
|
|
Internals
|
|
=========
|
|
|
|
This chapter contains the autogenerated documentation of the RapidIO
|
|
subsystem.
|
|
|
|
Structures
|
|
----------
|
|
|
|
.. kernel-doc:: include/linux/rio.h
|
|
:internal:
|
|
|
|
Enumeration and Discovery
|
|
-------------------------
|
|
|
|
.. kernel-doc:: drivers/rapidio/rio-scan.c
|
|
:internal:
|
|
|
|
Driver functionality
|
|
--------------------
|
|
|
|
.. kernel-doc:: drivers/rapidio/rio.c
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/rapidio/rio-access.c
|
|
:internal:
|
|
|
|
Device model support
|
|
--------------------
|
|
|
|
.. kernel-doc:: drivers/rapidio/rio-driver.c
|
|
:internal:
|
|
|
|
PPC32 support
|
|
-------------
|
|
|
|
.. kernel-doc:: arch/powerpc/sysdev/fsl_rio.c
|
|
:internal:
|
|
|
|
Credits
|
|
=======
|
|
|
|
The following people have contributed to the RapidIO subsystem directly
|
|
or indirectly:
|
|
|
|
1. Matt Porter\ mporter@kernel.crashing.org
|
|
|
|
2. Randy Vinson\ rvinson@mvista.com
|
|
|
|
3. Dan Malek\ dan@embeddedalley.com
|
|
|
|
The following people have contributed to this document:
|
|
|
|
1. Matt Porter\ mporter@kernel.crashing.org
|