| Message ID | 20180412145802.23313-1-mika.kuoppala@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Quoting Mika Kuoppala (2018-04-12 15:58:02) > Evidence indicates that Cannonlake HWSP is not coherent > as it should. Revert to using mmio access for now. > > Testcase: igt/gem_ctx_switch > References: https://bugs.freedesktop.org/show_bug.cgi?id=105888 > Cc: Chris Wilson <chris@chris-wilson.co.uk> > Cc: Rafael Antognolli <rafael.antognolli@intel.com> > Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> > Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> -Chris
On Thu, Apr 12, 2018 at 05:58:02PM +0300, Mika Kuoppala wrote: > Evidence indicates that Cannonlake HWSP is not coherent > as it should. Revert to using mmio access for now. > > Testcase: igt/gem_ctx_switch > References: https://bugs.freedesktop.org/show_bug.cgi?id=105888 > Cc: Chris Wilson <chris@chris-wilson.co.uk> > Cc: Rafael Antognolli <rafael.antognolli@intel.com> > Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> > Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> > --- > drivers/gpu/drm/i915/intel_engine_cs.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c > index 68898d58dd1e..1a8370779bbb 100644 > --- a/drivers/gpu/drm/i915/intel_engine_cs.c > +++ b/drivers/gpu/drm/i915/intel_engine_cs.c > @@ -475,6 +475,9 @@ static bool csb_force_mmio(struct drm_i915_private *i915) > if (intel_vgpu_active(i915) && !intel_vgpu_has_hwsp_emulation(i915)) > return true; > > + if (IS_CANNONLAKE(i915)) > + return true; > + > return false; > } > > -- > 2.14.1 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 68898d58dd1e..1a8370779bbb 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -475,6 +475,9 @@ static bool csb_force_mmio(struct drm_i915_private *i915) if (intel_vgpu_active(i915) && !intel_vgpu_has_hwsp_emulation(i915)) return true; + if (IS_CANNONLAKE(i915)) + return true; + return false; }
Evidence indicates that Cannonlake HWSP is not coherent as it should. Revert to using mmio access for now. Testcase: igt/gem_ctx_switch References: https://bugs.freedesktop.org/show_bug.cgi?id=105888 Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Rafael Antognolli <rafael.antognolli@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> --- drivers/gpu/drm/i915/intel_engine_cs.c | 3 +++ 1 file changed, 3 insertions(+)