linux/drivers/gpu/drm
Jesse Barnes f360132626 drm/i915: fix 845G FIFO size & burst length
I had one report of flicker due to FIFO underruns on 845G.  Scott was
kind enough to test a few patches and report success with this one.
Looks like 845G measures FIFO size slightly differently than other
chips, and we were also clobbering the FIFO burst length.  Fixing both
of those issues gives him a healthy machine again.

Note that we still only adjust plane A's watermark in the 830/845
case.  If someone is willing to test we could support a bigger variety
of dual-head 830/845 configurations with a bit more code.

Fixes fdo bug #19304 (again).

Reported-by: Scott Hansen <scottandchrystie@comcast.net>
Tested-by: Scott Hansen <scottandchrystie@comcast.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
2009-07-29 15:17:28 -07:00
..
i810 drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
i830 drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
i915 drm/i915: fix 845G FIFO size & burst length 2009-07-29 15:17:28 -07:00
mga drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
r128 drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
radeon drm/radeon: fix driver initialization order so radeon kms can be builtin 2009-06-24 16:11:06 +10:00
savage drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
sis drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
tdfx
ttm drm: remove unused #include <linux/version.h>'s 2009-06-24 16:31:50 +10:00
via drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
ati_pcigart.c drm/ati_pcigart: use memset_io to reset the memory 2009-03-13 14:24:14 +10:00
drm_agpsupport.c agp: switch AGP to use page array instead of unsigned long array 2009-06-19 10:21:42 +10:00
drm_auth.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_bufs.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_cache.c drm: wbinvd is cache coherent. 2008-10-18 07:10:53 +10:00
drm_context.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_crtc_helper.c drm: Disable the unused connectors explicitly when resuming with KMS. 2009-07-10 12:39:51 -07:00
drm_crtc.c drm: Hook up DPMS property handling in drm_crtc.c. Add drm_helper_connector_dpms. 2009-06-04 09:32:12 +10:00
drm_debugfs.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_dma.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_drawable.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_drv.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_edid.c drm: Fix shifts which were miscalculated when converting from bitfields. 2009-06-24 16:11:04 +10:00
drm_fops.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_gem.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_hashtab.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_info.c drm: merge Linux master into HEAD 2009-03-28 20:22:18 -04:00
drm_ioc32.c drm: Only use DRM_IOCTL_UPDATE_DRAW compat wrapper for compat X86. 2009-03-13 14:24:04 +10:00
drm_ioctl.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_irq.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_lock.c drm: Avoid client deadlocks when the master disappears. 2009-03-03 09:50:20 +10:00
drm_memory.c agp: switch AGP to use page array instead of unsigned long array 2009-06-19 10:21:42 +10:00
drm_mm.c drm: Apply "Memory fragmentation from lost alignment blocks" 2009-06-19 09:01:12 +10:00
drm_modes.c drm: Replace DRM_DEBUG with DRM_DEBUG_MODE in drm_mode 2009-06-12 14:59:42 +10:00
drm_pci.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_proc.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_scatter.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_sman.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_stub.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_sysfs.c Driver Core: drm: add nodename for drm devices 2009-06-15 21:30:26 -07:00
drm_vm.c agp: switch AGP to use page array instead of unsigned long array 2009-06-19 10:21:42 +10:00
Kconfig drm/i915: Add missing dependency on Intel AGP support. 2009-06-21 22:13:38 -07:00
Makefile drm/radeon: fix driver initialization order so radeon kms can be builtin 2009-06-24 16:11:06 +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