drm/i915/tgl: the BCS engine supports relative MMIO

The specs don't mention any specific HW limitation on the blitter and
manual inspection shows that the HW does set the relative MMIO bit in
the LRI of the blitter context image, so we can remove our limitations.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191009230424.6507-1-daniele.ceraolospurio@intel.com

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 7ea58335f04c8411fb9406ab14109508389bc059..eb061f34516625bcb8eff203f74972e7bed9bed2 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -3451,7 +3451,7 @@ void intel_execlists_set_default_submission(struct intel_engine_cs *engine)
                        engine->flags |= I915_ENGINE_HAS_PREEMPTION;
        }
 
-       if (engine->class != COPY_ENGINE_CLASS && INTEL_GEN(engine->i915) >= 12)
+       if (INTEL_GEN(engine->i915) >= 12)
                engine->flags |= I915_ENGINE_HAS_RELATIVE_MMIO;
 }