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94ec8f6130
With the PTE clarifications, the bind and clear functions can now be added for gen8. v2: Use for_each_sg_pages in gen8_ggtt_insert_entries. v3: Drop dev argument to pte encode functions, upstream lost it. Also rebase on top of the scratch page movement. v4: Rebase on top of the new address space vfuncs. v5: Add the bool use_scratch argument to clear_range and the bool valid argument to the PTE encode function to follow upstream changes. v6: Add a FIXME(BDW) about the size mismatch of the readback check that Jon Bloomfield spotted. v7: Squash in fixup patch from Ben for the posting read to match the 64bit ptes and so shut up the WARN. Signed-off-by: Ben Widawsky <ben@bwidawsk.net> (v1) Reviewed-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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* For the very latest on DRI development, please see: *
* http://dri.freedesktop.org/ *
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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