From: Chris Wilson chris@chris-wilson.co.uk
This bit was fliped on for "syncing dependencies between camera and graphics". BSpec has no recollection why, and it is causing unrecoverable GPU hangs with Vulkan compute workloads.
From BSpec, setting bit5 to 0 enables relaxed padding requirements for
buffers, 1D and 2D non-array, non-MSAA, non-mip-mapped linear surfaces; and *must* be set to 0h on skl+ to ensure "Out of Bounds" case is suppressed.
Back-ported from 2eb0964eec5f1d99f9eaf4963eee267acc72b615 to 4.19.72 by Jason Ekstrand
Reported-by: Jason Ekstrand jason@jlekstrand.net Suggested-by: Jason Ekstrand jason@jlekstrand.net Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110998 Fixes: 8424171e135c ("drm/i915/gen9: h/w w/a: syncing dependencies between camera and graphics") Signed-off-by: Chris Wilson chris@chris-wilson.co.uk Tested-by: denys.kostin@globallogic.com Cc: Jason Ekstrand jason@jlekstrand.net Cc: Mika Kuoppala mika.kuoppala@linux.intel.com Cc: stable@vger.kernel.org # v4.1+ Reviewed-by: Mika Kuoppala mika.kuoppala@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20190904100707.7377-1-chris@ch... (cherry picked from commit 9d7b01e93526efe79dbf75b69cc5972b5a4f7b37) Signed-off-by: Jani Nikula jani.nikula@intel.com Signed-off-by: Jason Ekstrand jason@jlekstrand.net --- drivers/gpu/drm/i915/intel_workarounds.c | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c index c44bb37e434c..bbb7411fc11b 100644 --- a/drivers/gpu/drm/i915/intel_workarounds.c +++ b/drivers/gpu/drm/i915/intel_workarounds.c @@ -227,11 +227,6 @@ static int gen9_ctx_workarounds_init(struct drm_i915_private *dev_priv) FLOW_CONTROL_ENABLE | PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE);
- /* Syncing dependencies between camera and graphics:skl,bxt,kbl */ - if (!IS_COFFEELAKE(dev_priv)) - WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3, - GEN9_DISABLE_OCL_OOB_SUPPRESS_LOGIC); - /* WaEnableYV12BugFixInHalfSliceChicken7:skl,bxt,kbl,glk,cfl */ /* WaEnableSamplerGPGPUPreemptionSupport:skl,bxt,kbl,cfl */ WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7,