From: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Date: Wed, 9 Oct 2019 23:04:23 +0000 (-0700)
Subject: drm/i915/tgl: the BCS engine supports relative MMIO
X-Git-Tag: for-linus-20191205~71^2~31^2~126
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=ba2c74da52eba388d959a1000a9dd08fa4857659;p=linux-2.6-block.git

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 7ea58335f04c..eb061f345166 100644
--- 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;
 }