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New Version Of VIA DRM TTM/GEM Patches

VIA

Published on 02 February 2011 07:32 PM EST
Written by Michael Larabel in VIA
4 Comments

Thanks to James Simmons, an independent developer in the open-source community, last month a patch was published that adds TTM/GEM memory management support to the VIA DRM Linux kernel driver. This was after VIA basically admitted defeat for their Linux / open-source strategy. Over the weekend the second version of this TTM/GEM patch was published by James.

This TTM/GEM patch for VIA hardware in the second revision now works when unloading the VIA kernel module or restarting the X Server, moves all resource handling over to TTM (Translation Table Maps), utilizes the GEM creation ioctl, reworks the detection of resources, and reworks the video memory (VRAM) detection to use the VIA north-bridge for detecting the memory and capacity.

Still lacking from this open-source VIA Linux code is accelerated bmoves, fence object handling (needed for 3D), and support for VIA PCI DMA GART. James and the OpenChrome developers also need to decide how to proceed on the DDX driver side, which is described in this mailing list post.

It looks like this work will actually move forward and should reach the mainline Linux kernel at some point.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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