linux/drivers/gpu/drm
Eric Anholt efbeed96f7 drm/i915: Don't let a device flush to prepare buffers clear new write_domains.
The problem was that object_set_to_gpu_domain would set the new write_domains
that are getting set by this batchbuffer, then the accumulated flushes required
for all the objects in preparation for this batchbuffer were posted, and the
brand new write domain would get cleared by the flush being posted.  Instead,
hang on to the new (or old if we're not changing it) value and set it after
the flush is queued.

Results from this noticably included conformance test failures from reads
shortly after writes (where the new write domain had been lost and thus not
flushed and waited on), but is a suspected cause of hangs in some apps when
a write domain is lost on a buffer that gets reused for instruction or
commmand state.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-02-23 10:06:19 +10:00
..
i810
i830
i915 drm/i915: Don't let a device flush to prepare buffers clear new write_domains. 2009-02-23 10:06:19 +10:00
mga drm: move drm vblank initialization/cleanup to driver load/unload 2008-11-25 09:49:03 +10:00
r128 drm: move drm vblank initialization/cleanup to driver load/unload 2008-11-25 09:49:03 +10:00
radeon drm/radeon: update sarea copies of last_ variables on resume. 2009-02-20 12:29:05 +10:00
savage
sis SiS DRM: fix a pointer cast warning 2008-10-18 07:10:10 +10:00
tdfx
via drm: move drm vblank initialization/cleanup to driver load/unload 2008-11-25 09:49:03 +10:00
ati_pcigart.c
drm_agpsupport.c drm: stash AGP include under the do-we-have-AGP ifdef 2009-01-22 22:27:11 +10:00
drm_auth.c drm: move to kref per-master structures. 2008-12-29 17:47:22 +10:00
drm_bufs.c drm/radeon: use locked rmmap to remove sarea mapping. 2008-12-29 17:47:24 +10:00
drm_cache.c drm: wbinvd is cache coherent. 2008-10-18 07:10:53 +10:00
drm_context.c drm: move to kref per-master structures. 2008-12-29 17:47:22 +10:00
drm_crtc.c drm: Release user fbs in drm_release 2009-02-20 12:21:11 +10:00
drm_crtc_helper.c drm: Propagate failure from setting crtc base. 2009-02-20 12:21:12 +10:00
drm_dma.c
drm_drawable.c drm: Avoid oops in DRM_IOCTL_RM_DRAW if a bad handle is supplied. 2008-10-23 13:46:54 +10:00
drm_drv.c drm: fix leak of device mappings since multi-master changes. 2009-01-19 17:17:58 +10:00
drm_edid.c drm: don't whine about not reading EDID data 2009-01-22 22:23:53 +10:00
drm_fops.c drm: Release user fbs in drm_release 2009-02-20 12:21:11 +10:00
drm_gem.c drm/i915: Keep refs on the object over the lifetime of vmas for GTT mmap. 2009-02-20 12:21:13 +10:00
drm_hashtab.c drm: GEM mmap support 2008-12-29 17:47:22 +10:00
drm_ioc32.c drm: Add 32-bit compatibility for DRM_IOCTL_UPDATE_DRAW. 2008-10-23 13:46:33 +10:00
drm_ioctl.c drm: fix leak of uninitialized data to userspace 2008-12-29 17:47:22 +10:00
drm_irq.c drm/i915: capture last_vblank count at IRQ uninstall time too 2009-02-08 21:40:51 +10:00
drm_lock.c drm: move to kref per-master structures. 2008-12-29 17:47:22 +10:00
drm_memory.c drm/radeon: fix ioremap conflict with AGP mappings 2009-02-08 21:37:24 +10:00
drm_mm.c DRM: add mode setting support 2008-12-29 17:47:23 +10:00
drm_modes.c DRM: add mode setting support 2008-12-29 17:47:23 +10:00
drm_pci.c
drm_proc.c drm: Add a debug node for vblank state. 2008-12-29 17:47:27 +10:00
drm_scatter.c
drm_sman.c
drm_stub.c drm: fix leak of device mappings since multi-master changes. 2009-01-19 17:17:58 +10:00
drm_sysfs.c gpu: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:41 -08:00
drm_vm.c drm: GEM mmap support 2008-12-29 17:47:22 +10:00
Kconfig fbdev/drm: fix Kconfig submenu mess in "Graphics support" 2009-02-18 15:37:56 -08:00
Makefile DRM: add mode setting support 2008-12-29 17:47:23 +10:00
README.drm

************************************************************
* 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