busdma

In computing, busdma is a set of application programming interfaces designed to help make device drivers less dependent on platform-specific code, thereby allowing the host operating system to be more easily ported to new computer hardware.

Originally implemented as the "bus_dma" APIs by the developers of the NetBSD operating system, busdma has been adopted by OpenBSD, FreeBSD and their derivatives. Both NetBSD and OpenBSD have additional "bus_space" APIs that have been amalgamated into the version of busdma incorporated into FreeBSD. DragonFly BSD developers are also slowly converting their drivers to use busdma.

External links

The NetBSD Project

Operating system	NetBSD

Related projects	pkgsrc IPFilter ATF netpgp tnftp

Notable subsystems	Veriexec busdma PUFFS Rump kernel NPF

The FreeBSD Project

FreeBSD

Subsystems

People

Derivatives

open-source	BSD Router Project DesktopBSD FreeNAS FreeSBIE GhostBSD Kylin MidnightBSD m0n0wall PC-BSD pfSense GNU/kFreeBSD Gentoo/FreeBSD

proprietary	Darwin Junos OS X PlayStation 3 OS PlayStation 4 OS XNU

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