drivers/gpu/drm/README.drm

   1 ************************************************************
   2 * For the very latest on DRI development, please see:      *
   3 *     http://dri.freedesktop.org/                          *
   4 ************************************************************
   5
   6 The Direct Rendering Manager (drm) is a device-independent kernel-level
   7 device driver that provides support for the XFree86 Direct Rendering
   8 Infrastructure (DRI).
   9
  10 The DRM supports the Direct Rendering Infrastructure (DRI) in four major
  11 ways:
  12
  13     1. The DRM provides synchronized access to the graphics hardware via
  14        the use of an optimized two-tiered lock.
  15
  16     2. The DRM enforces the DRI security policy for access to the graphics
  17        hardware by only allowing authenticated X11 clients access to
  18        restricted regions of memory.
  19
  20     3. The DRM provides a generic DMA engine, complete with multiple
  21        queues and the ability to detect the need for an OpenGL context
  22        switch.
  23
  24     4. The DRM is extensible via the use of small device-specific modules
  25        that rely extensively on the API exported by the DRM module.
  26
  27
  28 Documentation on the DRI is available from:
  29     http://dri.freedesktop.org/wiki/Documentation
  30     http://sourceforge.net/project/showfiles.php?group_id=387
  31     http://dri.sourceforge.net/doc/
  32
  33 For specific information about kernel-level support, see:
  34
  35     The Direct Rendering Manager, Kernel Support for the Direct Rendering
  36     Infrastructure
  37     http://dri.sourceforge.net/doc/drm_low_level.html
  38
  39     Hardware Locking for the Direct Rendering Infrastructure
  40     http://dri.sourceforge.net/doc/hardware_locking_low_level.html
  41
  42     A Security Analysis of the Direct Rendering Infrastructure
  43     http://dri.sourceforge.net/doc/security_low_level.html