1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Texas Instruments Puts Out A New Open-Source Driver

Linux Kernel

Published on 18 December 2010 07:11 PM EST
Written by Michael Larabel in Linux Kernel
7 Comments

Earlier this week there was the release of a new open-source Linux driver by an engineer at Texas Instruments. The TI DMM-TILER is this new driver and its for the dynamic memory manager block on Texas Instruments hardware. "Its purpose is to organize video/image memory in a 2-dimensional fashion to limit memory bandwidth and facilitate 0 effort rotation and mirroring. The TILER driver facilitates allocating, freeing, as well as mapping 2D blocks (areas) in the TILER container(s). It also facilitates rotating and mirroring the allocated blocks or its rectangular subsections."

This TILER driver stands for Tiling and Isometric Lightweight Engine for Rotation. This is not the first time the code has been published by Texas Instruments but it's on its third revision in recent weeks.

This driver effectively deals with the hardware block of video memory management on Texas Instruments hardware. But rather than implementing the Graphics Execution Manager (GEM) or Translation Table Maps (TTM) APIs like most other open-source graphics driver, it brings its own memory management interface (DMM) to the kernel party. The principal engineer at TI working on this code isn't even familiar with DRM/GEM (email).

David Airlie, the Linux kernel DRM maintainer who would need to approve the pulling of this TI DMM-TILER driver if it's to live within the Direct Rendering Manager portion of the kernel, has already asked what is the use-case for this driver and what open-source applications take advantage of this DMM interface. So far there's no response yet.

This may be another example of how embedded GPU support on Linux is a mess. Back in July there was a 2D/3D kernel driver release by Qualcomm for their Snapdragon hardware, but it too ended up being a dirty mess and has yet to be pulled into the mainline kernel.

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 .
Latest Linux Hardware Reviews
  1. Even With Re-Clocking, Nouveau Remains Behind NVIDIA's Proprietary Linux Driver
  2. The Power Consumption & Efficiency Of Open-Source GPU Drivers
  3. AMD R600g/RadeonSI Performance On Linux 3.16 With Mesa 10.3-devel
  4. Intel Pentium G3258 On Linux
Latest Linux Articles
  1. Updated Source Engine Benchmarks On The Latest AMD/NVIDIA Linux Drivers
  2. Nouveau vs. Radeon vs. Intel Tests On Linux 3.16, Mesa 10.3-devel
  3. KVM Benchmarks On Ubuntu 14.10
  4. X.Org Server 1.16 Officially Released With Terrific Features
Latest Linux News
  1. GNOME/GTK On Wayland Gains Focus At GUADEC
  2. GNOME Stakeholders Take Issue With Groupon Over their Gnome
  3. GStreamer VA-API Plug-In Update Adds New Features
  4. Qt 5.4 Going Into Feature Freeze Next Week With Exciting Changes
  5. OpenSUSE Factory Turns Into Rolling Release Distribution
  6. "The World's Most Highly-Assured OS" Kernel Open-Sourced
  7. NVIDIA Is Working Towards VDPAU H.265/HEVC Support
  8. Hawaii Bug-Fixes Start Hitting Mainline RadeonSI Gallium3D
  9. The FFmpeg vs. Libav War Continues In Debian Land
  10. Grand Theft Auto Running On Direct3D Natively On Linux Shows Gallium3D Potential
Latest Forum Discussions
  1. Grand Theft Auto Running On Direct3D Natively On Linux Shows Gallium3D Potential
  2. Linus Torvalds On GCC 4.9: Pure & Utter Crap
  3. AMD Athlon 5350 APU On Linux
  4. Updated and Optimized Ubuntu Free Graphics Drivers
  5. Debian + radeonsi
  6. Open-source drivers on ATI R7 260X
  7. List of Linux friendly Kickstarter projects
  8. Porting Mesa to the Playstation 2