Re: [Intel-gfx] [PATCH 2/2] drm/i915/bdw: WaGttCachingOffByDefault: bdw

2015-06-09 Thread Chris Wilson
On Mon, Jun 08, 2015 at 08:20:48PM +0100, Damien Lespiau wrote: > On Fri, Jun 05, 2015 at 03:58:23PM -0700, Rodrigo Vivi wrote: > > Due to RTL Bug, GAM does not support enabling GTT cache when > > big pages are also turned on. This leads to GAM reporting > > incorrect data and address. > > We don'

Re: [Intel-gfx] [PATCH 2/2] drm/i915/bdw: WaGttCachingOffByDefault: bdw

2015-06-08 Thread Damien Lespiau
On Fri, Jun 05, 2015 at 03:58:23PM -0700, Rodrigo Vivi wrote: > Due to RTL Bug, GAM does not support enabling GTT cache when > big pages are also turned on. This leads to GAM reporting > incorrect data and address. We don't use big pages, so we can leave GTT caching enabled until we support them (

Re: [Intel-gfx] [PATCH 2/2] drm/i915/bdw: WaGttCachingOffByDefault: bdw

2015-06-06 Thread shuang . he
Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang...@intel.com) Task id: 6548 -Summary- Platform Delta drm-intel-nightly Series Applied PNV

[Intel-gfx] [PATCH 2/2] drm/i915/bdw: WaGttCachingOffByDefault: bdw

2015-06-05 Thread Rodrigo Vivi
Due to RTL Bug, GAM does not support enabling GTT cache when big pages are also turned on. This leads to GAM reporting incorrect data and address. For A0 let the register GTT_CACHE_EN use the default value[0x]. For B0 onwards enable the GTT cache by setting the GTT_CACHE_EN[04024h] to value