DragonFlyBSD Implements Part Of Linux's IRQ Subsystem, Improves DRM Driver Portability
Written by Michael Larabel in BSD on 25 April 2018 at 07:53 AM EDT. 7 Comments
BSD --
DragonFlyBSD has implemented a portion of the Linux IRQ subsystem within its kernel.

The purpose of implementing some Linux IRQ subsystem functionality within this BSD kernel is to improve the portability of the Linux DRM (Direct Rendering Manager) driver code.

For years now DragonFlyBSD and many other BSDs have been continually porting the latest Intel/Radeon DRM driver code from the upstream Linux kernel over to their kernels. Over time, more of the Linux interfaces have been added or other compatibility interfaces to ease the process. With DragonFly now sporting some Linux IRQ interfaces, this will allow for reusing more DRM driver code "as-is" from Linux.

This Linux IRQ addition to DragonFly was merged this morning.

Currently the DragonFlyBSD kernel implements Intel and Radeon DRM support from around Linux ~4.8 but with some additions like for Intel Coffeelake graphics support. This latest DragonFlyBSD DRM driver work will be present for the DragonFlyBSD 5.4 release.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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