Next OSADL Events:
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Breaking News:
2010-03-10 12:00
Parallel real-time on multi-core systems with mainline Linux
Several tasks simultaneously running at real-time priority no longer interfere to each other!
2010-02-22 12:00
"Latest Stable" Linux mainline real-time 2.6.31 is out!
Kernel 2.6.31.12-rt21 is our latest and greatest
2010-02-21 12:00
OSADL at the Embedded World 2010
Industry needs Open Source - Open Source meets Industry
2010-02-09 12:00
Spinlock annotations merged from the realtime tree to Linux mainline in 2.6.33
Raw spinlocks are the "real" spinlocks now
2010-02-08 12:00
Prof Eben Moglen on "GNU GPL Version 3: The Law Making Process"
International Conference on Commons, Users, Service Providers Internet (Self-)Regulation and Copyright
2009-11-23 12:00
Added a new HOWTO to the OSADL Website: Use BuildRoot to create a Linux image for QEMU
Guest Editor Bogdan Cristea tells us about rapid prototyping of an embedded system using virtualization |
OSADL Project: Userspace Driver
Project Goal
Provide a generic framework for handling devices in userspace. The device driver is split into a small kernel part, which contains the device setup and the primary interrupt handling, and a user space part, which handles the device functionality.
UIO was originally part of the OSADL project "Universal Fieldbus and Industrial I/O Framework" and represents one of its kernel interfaces.
This HOWTO is part of the Linux kernel documentation.
Code
Since kernel version 2.6.23 (commit), UIO kernel component is part of the mainline Linux Kernel. This LWN article gives some more details on it.
The mainline Linux kernel contains a number of UIO user-space drivers that can be used as a template when writing such drivers, e.g.
uio_cif.c | UIO Hilscher CIF card driver |
uio_sercos3.c | UIO driver for the Automata Sercos III PCI card |