drm/i915: Teach record_defaults to operate on the intel_gt

Again we wish to operate on the engines, which are owned by the
intel_gt. As such it is easier, and much more consistent, to pass the
intel_gt parameter.

v2: Unexport i915_gem_load_power_context()

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191022141935.15733-1-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/gem/i915_gem_pm.c

@@ -37,11 +37,6 @@ static bool switch_to_kernel_context_sync(struct intel_gt *gt)
 	return result;
 }
 
-bool i915_gem_load_power_context(struct drm_i915_private *i915)
-{
-	return switch_to_kernel_context_sync(&i915->gt);
-}
-
 static void user_forcewake(struct intel_gt *gt, bool suspend)
 {
 	int count = atomic_read(&gt->user_wakeref);
@@ -171,7 +166,7 @@ void i915_gem_resume(struct drm_i915_private *i915)
 	intel_uc_resume(&i915->gt.uc);
 
 	/* Always reload a context for powersaving. */
-	if (!i915_gem_load_power_context(i915))
+	if (!switch_to_kernel_context_sync(&i915->gt))
 		goto err_wedged;
 
 	user_forcewake(&i915->gt, false);

drivers/gpu/drm/i915/gem/i915_gem_pm.h

@@ -12,7 +12,6 @@
 struct drm_i915_private;
 struct work_struct;
 
-bool i915_gem_load_power_context(struct drm_i915_private *i915);
 void i915_gem_resume(struct drm_i915_private *i915);
 
 void i915_gem_idle_work_handler(struct work_struct *work);

drivers/gpu/drm/i915/i915_gem.c

@@ -48,6 +48,7 @@
 #include "gt/intel_engine_user.h"
 #include "gt/intel_gt.h"
 #include "gt/intel_gt_pm.h"
+#include "gt/intel_gt_requests.h"
 #include "gt/intel_mocs.h"
 #include "gt/intel_reset.h"
 #include "gt/intel_renderstate.h"
@@ -1069,7 +1070,7 @@ void i915_gem_sanitize(struct drm_i915_private *i915)
 	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
 }
 
-static int __intel_engines_record_defaults(struct drm_i915_private *i915)
+static int __intel_engines_record_defaults(struct intel_gt *gt)
 {
 	struct i915_request *requests[I915_NUM_ENGINES] = {};
 	struct intel_engine_cs *engine;
@@ -1085,7 +1086,7 @@ static int __intel_engines_record_defaults(struct drm_i915_private *i915)
 	 * from the same default HW values.
 	 */
 
-	for_each_engine(engine, i915, id) {
+	for_each_engine(engine, gt, id) {
 		struct intel_context *ce;
 		struct i915_request *rq;
 
@@ -1093,7 +1094,8 @@ static int __intel_engines_record_defaults(struct drm_i915_private *i915)
 		GEM_BUG_ON(!engine->kernel_context);
 		engine->serial++; /* force the kernel context switch */
 
-		ce = intel_context_create(i915->kernel_context, engine);
+		ce = intel_context_create(engine->kernel_context->gem_context,
+					  engine);
 		if (IS_ERR(ce)) {
 			err = PTR_ERR(ce);
 			goto out;
@@ -1122,7 +1124,7 @@ static int __intel_engines_record_defaults(struct drm_i915_private *i915)
 	}
 
 	/* Flush the default context image to memory, and enable powersaving. */
-	if (!i915_gem_load_power_context(i915)) {
+	if (intel_gt_wait_for_idle(gt, I915_GEM_IDLE_TIMEOUT) == -ETIME) {
 		err = -EIO;
 		goto out;
 	}
@@ -1181,7 +1183,7 @@ static int __intel_engines_record_defaults(struct drm_i915_private *i915)
 	 * this is by declaring ourselves wedged.
 	 */
 	if (err)
-		intel_gt_set_wedged(&i915->gt);
+		intel_gt_set_wedged(gt);
 
 	for (id = 0; id < ARRAY_SIZE(requests); id++) {
 		struct intel_context *ce;
@@ -1295,7 +1297,7 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
 	if (ret)
 		goto err_gt;
 
-	ret = __intel_engines_record_defaults(dev_priv);
+	ret = __intel_engines_record_defaults(&dev_priv->gt);
 	if (ret)
 		goto err_gt;
 

drivers/gpu/drm/i915/selftests/i915_selftest.c

@@ -23,8 +23,9 @@
 
 #include <linux/random.h>
 
-#include "../i915_drv.h"
-#include "../i915_selftest.h"
+#include "gt/intel_gt_pm.h"
+#include "i915_drv.h"
+#include "i915_selftest.h"
 
 #include "igt_flush_test.h"
 
@@ -256,6 +257,10 @@ int __i915_live_setup(void *data)
 {
 	struct drm_i915_private *i915 = data;
 
+	/* The selftests expect an idle system */
+	if (intel_gt_pm_wait_for_idle(&i915->gt))
+		return -EIO;
+
 	return intel_gt_terminally_wedged(&i915->gt);
 }
 
@@ -275,6 +280,10 @@ int __intel_gt_live_setup(void *data)
 {
 	struct intel_gt *gt = data;
 
+	/* The selftests expect an idle system */
+	if (intel_gt_pm_wait_for_idle(gt))
+		return -EIO;
+
 	return intel_gt_terminally_wedged(gt);
 }