threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
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2.2 KiB
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108 lines
2.2 KiB
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=======================
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RapidIO Subsystem Guide
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=======================
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:Author: Matt Porter
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Introduction
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============
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RapidIO is a high speed switched fabric interconnect with features aimed
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at the embedded market. RapidIO provides support for memory-mapped I/O
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as well as message-based transactions over the switched fabric network.
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RapidIO has a standardized discovery mechanism not unlike the PCI bus
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standard that allows simple detection of devices in a network.
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This documentation is provided for developers intending to support
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RapidIO on new architectures, write new drivers, or to understand the
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subsystem internals.
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Known Bugs and Limitations
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==========================
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Bugs
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----
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None. ;)
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Limitations
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-----------
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1. Access/management of RapidIO memory regions is not supported
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2. Multiple host enumeration is not supported
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RapidIO driver interface
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========================
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Drivers are provided a set of calls in order to interface with the
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subsystem to gather info on devices, request/map memory region
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resources, and manage mailboxes/doorbells.
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Functions
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---------
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.. kernel-doc:: include/linux/rio_drv.h
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:internal:
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.. kernel-doc:: drivers/rapidio/rio-driver.c
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:export:
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.. kernel-doc:: drivers/rapidio/rio.c
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:export:
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Internals
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=========
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This chapter contains the autogenerated documentation of the RapidIO
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subsystem.
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Structures
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----------
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.. kernel-doc:: include/linux/rio.h
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:internal:
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Enumeration and Discovery
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-------------------------
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.. kernel-doc:: drivers/rapidio/rio-scan.c
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:internal:
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Driver functionality
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--------------------
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.. kernel-doc:: drivers/rapidio/rio.c
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:internal:
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.. kernel-doc:: drivers/rapidio/rio-access.c
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:internal:
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Device model support
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--------------------
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.. kernel-doc:: drivers/rapidio/rio-driver.c
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:internal:
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PPC32 support
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-------------
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.. kernel-doc:: arch/powerpc/sysdev/fsl_rio.c
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:internal:
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Credits
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=======
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The following people have contributed to the RapidIO subsystem directly
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or indirectly:
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1. Matt Porter\ mporter@kernel.crashing.org
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2. Randy Vinson\ rvinson@mvista.com
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3. Dan Malek\ dan@embeddedalley.com
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The following people have contributed to this document:
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1. Matt Porter\ mporter@kernel.crashing.org
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