Previously, drivers supporting vblank interrupt waits would run the interrupt
all the time, or all the time that any 3d client was running, preventing the
CPU from sleeping for long when the system was otherwise idle.  Now, interrupts
are disabled any time that no client is waiting on a vblank event. The new
method uses vblank counters on the chipsets when the interrupts are turned
off, rather than counting interrupts, so that we can continue to present
accurate vblank numbers.

Co-author: Michel Dänzer <michel@tungstengraphics.com>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>
Signed-off-by: NDave Airlie <airlied@redhat.com>

With the coming of kernel based modesetting and the memory manager stuff,
the everything in one directory approach was getting very ugly and
starting to be unmanageable.

This restructures the drm along the lines of other kernel components.

It creates a drivers/gpu/drm directory and moves the hw drivers into
subdirectores. It moves the includes into an include/drm, and
sets up the unifdef for the userspace headers we should be exporting.
Signed-off-by: NDave Airlie <airlied@redhat.com>

This reverts commit ac741ab7.

Okay this looks like wasn't as fully baked as I'd led myself to believe.

Revert for now for further baking.
Signed-off-by: NDave Airlie <airlied@redhat.com>

Other Authors: Michel Dänzer <michel@tungstengraphics.com>
mga: Ian Romanick <idr@us.ibm.com>
via: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>

This re-works the DRM internals to provide a better interface for drivers
to expose vblank on multiple crtcs.

It also includes work done by Michel on making i915 triple buffering and pageflipping work properly.
Signed-off-by: NDave Airlie <airlied@redhat.com>

The data is now in kernel space, copied in/out as appropriate according to t
This results in DRM_COPY_{TO,FROM}_USER going away, and error paths to deal
with those failures.  This also means that XFree86 4.2.0 support for i810 DR
is lost.
Signed-off-by: NDave Airlie <airlied@linux.ie>

As a fallout, replace filp storage with file_priv storage for "unique
identifier of a client" all over the DRM.  There is a 1:1 mapping, so this
should be a noop.  This could be a minor performance improvement, as everyth
on Linux dereferenced filp to get file_priv anyway, while only the mmap ioct
went the other direction.
Signed-off-by: NDave Airlie <airlied@linux.ie>

Signed-off-by: NDave Airlie <airlied@linux.ie>

some drivers still todo.
Signed-off-by: NDave Airlie <airlied@linux.ie>

Bump driver date and patchlevel.
Signed-off-by: NDave Airlie <airlied@linux.ie>

Signed-off-by: NDave Airlie <airlied@linux.ie>

Disable 3D functionality and AGP DMA for chipsets with the DX9 3D engine.
Signed-off-by: NDave Airlie <airlied@linux.ie>

This add support to the SiS and VIA drivers for the simple memory manager.
This fixes a lot of problems with the current simple code these drivers used,
including locking and SMP issues.
Signed-off-by: NDave Airlie <airlied@linux.ie>

From: Adrian Bunk <bunk@stusta.de>

This patch makes some needlessly global functions static.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDave Airlie <airlied@linux.ie>

This updates the DRM via driver to the latest CVS version, which contains
support for DMA blitting.

It also contains some whitespace and other minor fixes

From: Thomas Hellstrom <unichrome@shipmail.org>
Signed-off-by: NDave Airlie <airlied@linux.ie>

Add PCI DMA blitengine to VIA DRM
Add portability code for porting VIA to FreeBSD.
Sync via_drm.h with 3d driver

From: Thomas Hellstrom <unichrome@shipmail.org>, Eric Anholt <anholt@freebsd.org>
Signed-off-by: NDave Airlie <airlied@linux.ie>

Finally cleaned up the sparse warnings for the drm.
Signed-off-by: NDave Airlie <airlied@linux.ie>

I've been threatening this for a while, so no point hanging around.
This lindents the DRM code which was always really bad in tabbing department.
I've also fixed some misnamed files in comments and removed some trailing
whitespace.
Signed-off-by: NDave Airlie <airlied@linux.ie>

Add DRM device driver for VIA Unichrome chipsets

From: Unichrome Project http://unichrome.sf.net, Erdi Chen, Thomas Hellstrom    Signed-off-by: Dave Airlie <airlied@linux.ie>