| Message ID | 20221123033308.3717361-1-arun.r.murthy@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [PATCHv3] drm/i915/fbc: Disable FBC when VT-d is enabled | expand |
On Wed, Nov 23, 2022 at 09:03:08AM +0530, Arun R Murthy wrote: > The WaFbcTurnOffFbcWhenHyperVisorIsUsed is applicable for SKL, BXT and > KBL. > > Bspec: 0852 > > v2: Updated commit msg and corrected Bspec format(Jani N) > v3: Updated the stepping information > > Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com> > --- > drivers/gpu/drm/i915/display/intel_fbc.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c > index b5ee5ea0d010..7c06ad454a7d 100644 > --- a/drivers/gpu/drm/i915/display/intel_fbc.c > +++ b/drivers/gpu/drm/i915/display/intel_fbc.c > @@ -1652,9 +1652,10 @@ static int intel_sanitize_fbc_option(struct drm_i915_private *i915) > > static bool need_fbc_vtd_wa(struct drm_i915_private *i915) > { > - /* WaFbcTurnOffFbcWhenHyperVisorIsUsed:skl,bxt */ > + /* WaFbcTurnOffFbcWhenHyperVisorIsUsed:skl,bxt,kbl */ > if (i915_vtd_active(i915) && > - (IS_SKYLAKE(i915) || IS_BROXTON(i915))) { > + (IS_SKYLAKE(i915) || IS_BROXTON(i915) || > + IS_KBL_DISPLAY_STEP(i915, STEP_A0, STEP_B0))) { No one careas about pre-production hw once the thing has shipped. > drm_info(&i915->drm, > "Disabling framebuffer compression (FBC) to prevent screen flicker with VT-d enabled\n"); > return true; > -- > 2.25.1
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c index b5ee5ea0d010..7c06ad454a7d 100644 --- a/drivers/gpu/drm/i915/display/intel_fbc.c +++ b/drivers/gpu/drm/i915/display/intel_fbc.c @@ -1652,9 +1652,10 @@ static int intel_sanitize_fbc_option(struct drm_i915_private *i915) static bool need_fbc_vtd_wa(struct drm_i915_private *i915) { - /* WaFbcTurnOffFbcWhenHyperVisorIsUsed:skl,bxt */ + /* WaFbcTurnOffFbcWhenHyperVisorIsUsed:skl,bxt,kbl */ if (i915_vtd_active(i915) && - (IS_SKYLAKE(i915) || IS_BROXTON(i915))) { + (IS_SKYLAKE(i915) || IS_BROXTON(i915) || + IS_KBL_DISPLAY_STEP(i915, STEP_A0, STEP_B0))) { drm_info(&i915->drm, "Disabling framebuffer compression (FBC) to prevent screen flicker with VT-d enabled\n"); return true;
The WaFbcTurnOffFbcWhenHyperVisorIsUsed is applicable for SKL, BXT and KBL. Bspec: 0852 v2: Updated commit msg and corrected Bspec format(Jani N) v3: Updated the stepping information Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com> --- drivers/gpu/drm/i915/display/intel_fbc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)