[CI,3/8] drm/i915/execlists: Refactor out complete_preempt_context()

Commit Message

Chris Wilson May 16, 2018, 6:33 p.m. UTC

As a complement to inject_preempt_context(), follow up with the function
to handle its completion. This will be useful should we wish to extend
the duties of the preempt-context for execlists.

v2: And do the same for the guc.

Signed-off-by: Chris Wilson <[e-mail]>
Cc: Jeff McGee <[e-mail]>
Cc: Michał Winiarski <[e-mail]>
Reviewed-by: Jeff McGee <[e-mail]> #v1
---
 drivers/gpu/drm/i915/intel_guc_submission.c | 26 ++++++++++++++-------
 drivers/gpu/drm/i915/intel_lrc.c            | 23 ++++++++++--------
 2 files changed, 30 insertions(+), 19 deletions(-)

Patch

diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c
index 2feb65096966..ca38ac9ff4fa 100644
--- a/drivers/gpu/drm/i915/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/intel_guc_submission.c
@@ -623,6 +623,21 @@  static void wait_for_guc_preempt_report(struct intel_engine_cs *engine)
 	report->report_return_status = INTEL_GUC_REPORT_STATUS_UNKNOWN;
 }
 
+static void complete_preempt_context(struct intel_engine_cs *engine)
+{
+	struct intel_engine_execlists *execlists = &engine->execlists;
+
+	GEM_BUG_ON(!execlists_is_active(execlists, EXECLISTS_ACTIVE_PREEMPT));
+
+	execlists_cancel_port_requests(execlists);
+	execlists_unwind_incomplete_requests(execlists);
+
+	wait_for_guc_preempt_report(engine);
+	intel_write_status_page(engine, I915_GEM_HWS_PREEMPT_INDEX, 0);
+
+	execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
+}
+
 /**
  * guc_submit() - Submit commands through GuC
  * @engine: engine associated with the commands
@@ -793,15 +808,8 @@  static void guc_submission_tasklet(unsigned long data)
 
 	if (execlists_is_active(execlists, EXECLISTS_ACTIVE_PREEMPT) &&
 	    intel_read_status_page(engine, I915_GEM_HWS_PREEMPT_INDEX) ==
-	    GUC_PREEMPT_FINISHED) {
-		execlists_cancel_port_requests(&engine->execlists);
-		execlists_unwind_incomplete_requests(execlists);
-
-		wait_for_guc_preempt_report(engine);
-
-		execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
-		intel_write_status_page(engine, I915_GEM_HWS_PREEMPT_INDEX, 0);
-	}
+	    GUC_PREEMPT_FINISHED)
+		complete_preempt_context(engine);
 
 	if (!execlists_is_active(execlists, EXECLISTS_ACTIVE_PREEMPT))
 		guc_dequeue(engine);
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 15434cad5430..b2781f1bb91c 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -552,8 +552,18 @@  static void inject_preempt_context(struct intel_engine_cs *engine)
 	if (execlists->ctrl_reg)
 		writel(EL_CTRL_LOAD, execlists->ctrl_reg);
 
-	execlists_clear_active(&engine->execlists, EXECLISTS_ACTIVE_HWACK);
-	execlists_set_active(&engine->execlists, EXECLISTS_ACTIVE_PREEMPT);
+	execlists_clear_active(execlists, EXECLISTS_ACTIVE_HWACK);
+	execlists_set_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
+}
+
+static void complete_preempt_context(struct intel_engine_execlists *execlists)
+{
+	GEM_BUG_ON(!execlists_is_active(execlists, EXECLISTS_ACTIVE_PREEMPT));
+
+	execlists_cancel_port_requests(execlists);
+	execlists_unwind_incomplete_requests(execlists);
+
+	execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
 }
 
 static bool __execlists_dequeue(struct intel_engine_cs *engine)
@@ -1063,14 +1073,7 @@  static void execlists_submission_tasklet(unsigned long data)
 			if (status & GEN8_CTX_STATUS_COMPLETE &&
 			    buf[2*head + 1] == execlists->preempt_complete_status) {
 				GEM_TRACE("%s preempt-idle\n", engine->name);
-
-				execlists_cancel_port_requests(execlists);
-				execlists_unwind_incomplete_requests(execlists);
-
-				GEM_BUG_ON(!execlists_is_active(execlists,
-								EXECLISTS_ACTIVE_PREEMPT));
-				execlists_clear_active(execlists,
-						       EXECLISTS_ACTIVE_PREEMPT);
+				complete_preempt_context(execlists);
 				continue;
 			}