[RFC PATCH 53/97] drm/i915/guc: Disable semaphores when using GuC scheduling

[Matthew Brost]

Disable semaphores when using GuC scheduling as semaphores are broken in
the current GuC firmware.

Cc: John Harrison <john.c.harrison at intel.com>
Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_context.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 993faa213b41..d30260ffe2a7 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -230,7 +230,8 @@ static void intel_context_set_gem(struct intel_context *ce,
 		ce->timeline = intel_timeline_get(ctx->timeline);
 
 	if (ctx->sched.priority >= I915_PRIORITY_NORMAL &&
-	    intel_engine_has_timeslices(ce->engine))
+	    intel_engine_has_timeslices(ce->engine) &&
+	    intel_engine_has_semaphores(ce->engine))
 		__set_bit(CONTEXT_USE_SEMAPHORES, &ce->flags);
 
 	intel_context_set_watchdog_us(ce, ctx->watchdog.timeout_us);
@@ -1939,7 +1940,8 @@ static int __apply_priority(struct intel_context *ce, void *arg)
 	if (!intel_engine_has_timeslices(ce->engine))
 		return 0;
 
-	if (ctx->sched.priority >= I915_PRIORITY_NORMAL)
+	if (ctx->sched.priority >= I915_PRIORITY_NORMAL &&
+	    intel_engine_has_semaphores(ce->engine))
 		intel_context_set_use_semaphores(ce);
 	else
 		intel_context_clear_use_semaphores(ce);
-- 
2.28.0