[RFC PATCH 26/42] drm/i915/guc: Update debugfs for GuC multi-lrc

[Matthew Brost]

Display the workqueue status in debugfs for GuC contexts that are in
parent-child relationship.

Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
 .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 56 +++++++++++++------
 1 file changed, 39 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 8db1d56e34e2..81a5439de924 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -4489,31 +4489,53 @@ void intel_guc_submission_print_info(struct intel_guc *guc,
 		gse_log_submission_info(guc->gse[i], p, i);
 }
 
+static inline void guc_log_context(struct drm_printer *p,
+				   struct intel_context *ce)
+{
+	drm_printf(p, "GuC lrc descriptor %u:\n", ce->guc_id);
+	drm_printf(p, "\tHW Context Desc: 0x%08x\n", ce->lrc.lrca);
+	drm_printf(p, "\t\tLRC Head: Internal %u, Memory %u\n",
+		   ce->ring->head,
+		   ce->lrc_reg_state[CTX_RING_HEAD]);
+	drm_printf(p, "\t\tLRC Tail: Internal %u, Memory %u\n",
+		   ce->ring->tail,
+		   ce->lrc_reg_state[CTX_RING_TAIL]);
+	drm_printf(p, "\t\tContext Pin Count: %u\n",
+		   atomic_read(&ce->pin_count));
+	drm_printf(p, "\t\tGuC ID Ref Count: %u\n",
+		   atomic_read(&ce->guc_id_ref));
+	drm_printf(p, "\t\tNumber Requests Not Ready: %u\n",
+		   atomic_read(&ce->guc_num_rq_not_ready));
+	drm_printf(p, "\t\tSchedule State: 0x%x, 0x%x\n\n",
+		   ce->guc_state.sched_state,
+		   atomic_read(&ce->guc_sched_state_no_lock));
+}
+
 void intel_guc_submission_print_context_info(struct intel_guc *guc,
 					     struct drm_printer *p)
 {
 	struct intel_context *ce;
 	unsigned long index;
 	xa_for_each(&guc->context_lookup, index, ce) {
-		drm_printf(p, "GuC lrc descriptor %u:\n", ce->guc_id);
-		drm_printf(p, "\tHW Context Desc: 0x%08x\n", ce->lrc.lrca);
-		drm_printf(p, "\t\tLRC Head: Internal %u, Memory %u\n",
-			   ce->ring->head,
-			   ce->lrc_reg_state[CTX_RING_HEAD]);
-		drm_printf(p, "\t\tLRC Tail: Internal %u, Memory %u\n",
-			   ce->ring->tail,
-			   ce->lrc_reg_state[CTX_RING_TAIL]);
-		drm_printf(p, "\t\tContext Pin Count: %u\n",
-			   atomic_read(&ce->pin_count));
-		drm_printf(p, "\t\tGuC ID Ref Count: %u\n",
-			   atomic_read(&ce->guc_id_ref));
-		drm_printf(p, "\t\tNumber Requests Not Ready: %u\n",
-			   atomic_read(&ce->guc_num_rq_not_ready));
-		drm_printf(p, "\t\tSchedule State: 0x%x, 0x%x\n\n",
-			   ce->guc_state.sched_state,
-			   atomic_read(&ce->guc_sched_state_no_lock));
+		GEM_BUG_ON(intel_context_is_child(ce));
 
+		guc_log_context(p, ce);
 		guc_log_context_priority(p, ce);
+
+		if (intel_context_is_parent(ce)) {
+			struct guc_process_desc *desc = __get_process_desc(ce);
+			struct intel_context *child;
+
+			drm_printf(p, "\t\tWQI Head: %u\n",
+				   READ_ONCE(desc->head));
+			drm_printf(p, "\t\tWQI Tail: %u\n",
+				   READ_ONCE(desc->tail));
+			drm_printf(p, "\t\tWQI Status: %u\n\n",
+				   READ_ONCE(desc->wq_status));
+
+			for_each_child(ce, child)
+				guc_log_context(p, child);
+		}
 	}
 }
 
-- 
2.28.0