blob: 6441e01e587c09d8505e0b632feb8f96276c40ad [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001************************************************************
2* For the very latest on DRI development, please see: *
3* http://dri.sourceforge.net/ *
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5
6The Direct Rendering Manager (drm) is a device-independent kernel-level
7device driver that provides support for the XFree86 Direct Rendering
8Infrastructure (DRI).
9
10The DRM supports the Direct Rendering Infrastructure (DRI) in four major
11ways:
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
28Documentation on the DRI is available from:
29 http://precisioninsight.com/piinsights.html
30
31For specific information about kernel-level support, see:
32
33 The Direct Rendering Manager, Kernel Support for the Direct Rendering
34 Infrastructure
35 http://precisioninsight.com/dr/drm.html
36
37 Hardware Locking for the Direct Rendering Infrastructure
38 http://precisioninsight.com/dr/locking.html
39
40 A Security Analysis of the Direct Rendering Infrastructure
41 http://precisioninsight.com/dr/security.html
42
43************************************************************
44* For the very latest on DRI development, please see: *
45* http://dri.sourceforge.net/ *
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