We have a need for duplicated parsing of the RP_STATE_CAPS register (and
the setting of the associated fields). To reuse some code, we can
extract the function into a simple helper.
This patch also addresses the fact that we missed doing this for gen8,
something we should have done anyway.
This could be two patches, one to extract, and one to add gen8, but it's
trivial enough that I think one is fine. I will accept a request to
split it. Please notice the fix addressed by v2 below.
Valleyview is left untouched because it is different.
v2: Logically rebased on top of
commit dd0a1aa19b
Author: Jeff McGee <jeff.mcgee@intel.com>
Date: Tue Feb 4 11:32:31 2014 -0600
drm/i915: Restore rps/rc6 on reset
Note with the above change the fix for gen8 is also handled (which was
not the case in Jeff's original patch).
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
************************************************************
* For the very latest on DRI development, please see: *
* http://dri.freedesktop.org/ *
************************************************************
The Direct Rendering Manager (drm) is a device-independent kernel-level
device driver that provides support for the XFree86 Direct Rendering
Infrastructure (DRI).
The DRM supports the Direct Rendering Infrastructure (DRI) in four major
ways:
1. The DRM provides synchronized access to the graphics hardware via
the use of an optimized two-tiered lock.
2. The DRM enforces the DRI security policy for access to the graphics
hardware by only allowing authenticated X11 clients access to
restricted regions of memory.
3. The DRM provides a generic DMA engine, complete with multiple
queues and the ability to detect the need for an OpenGL context
switch.
4. The DRM is extensible via the use of small device-specific modules
that rely extensively on the API exported by the DRM module.
Documentation on the DRI is available from:
http://dri.freedesktop.org/wiki/Documentation
http://sourceforge.net/project/showfiles.php?group_id=387
http://dri.sourceforge.net/doc/
For specific information about kernel-level support, see:
The Direct Rendering Manager, Kernel Support for the Direct Rendering
Infrastructure
http://dri.sourceforge.net/doc/drm_low_level.html
Hardware Locking for the Direct Rendering Infrastructure
http://dri.sourceforge.net/doc/hardware_locking_low_level.html
A Security Analysis of the Direct Rendering Infrastructure
http://dri.sourceforge.net/doc/security_low_level.html
3280e8b08f