Commit e2de845e authored by Chris Wilson's avatar Chris Wilson

drm/i915/execlists: Skip resetting RING_CONTEXT_STATUS_PTR

As we now flag when the GPU signals a context-switch and do not read the
status register before we see that signal, we do not have to ensure that
it is cleared upon reset (and can leave it to the GPU to reset it from
the power context).
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Tvrtko Ursulin <tursulin@ursulin.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170201125338.12932-1-chris@chris-wilson.co.ukReviewed-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
parent 1881a423
...@@ -1317,7 +1317,6 @@ static int gen9_init_render_ring(struct intel_engine_cs *engine) ...@@ -1317,7 +1317,6 @@ static int gen9_init_render_ring(struct intel_engine_cs *engine)
static void reset_common_ring(struct intel_engine_cs *engine, static void reset_common_ring(struct intel_engine_cs *engine,
struct drm_i915_gem_request *request) struct drm_i915_gem_request *request)
{ {
struct drm_i915_private *dev_priv = engine->i915;
struct execlist_port *port = engine->execlist_port; struct execlist_port *port = engine->execlist_port;
struct intel_context *ce = &request->ctx->engine[engine->id]; struct intel_context *ce = &request->ctx->engine[engine->id];
...@@ -1344,7 +1343,6 @@ static void reset_common_ring(struct intel_engine_cs *engine, ...@@ -1344,7 +1343,6 @@ static void reset_common_ring(struct intel_engine_cs *engine,
return; return;
/* Catch up with any missed context-switch interrupts */ /* Catch up with any missed context-switch interrupts */
I915_WRITE(RING_CONTEXT_STATUS_PTR(engine), _MASKED_FIELD(0xffff, 0));
if (request->ctx != port[0].request->ctx) { if (request->ctx != port[0].request->ctx) {
i915_gem_request_put(port[0].request); i915_gem_request_put(port[0].request);
port[0] = port[1]; port[0] = port[1];
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment