[PATCH 09/10 v5] drm/i915: Debugfs interface for GuC submission statistics

[Dave Gordon <david.s.gordon@intel.com>]

This provides a means of reading status and counts relating
to GuC actions and submissions.

v2:
    Remove surplus blank line in output [Chris Wilson]

v5:
    Added GuC per-engine submission & seqno statistics

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Signed-off-by: Alex Dai <yu.dai@intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 52 +++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index cd40909..9b44fb1 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2410,6 +2410,57 @@ static int i915_guc_load_status_info(struct seq_file *m, void *data)
 	return 0;
 }
 
+static int i915_guc_info(struct seq_file *m, void *data)
+{
+	struct drm_info_node *node = m->private;
+	struct drm_device *dev = node->minor->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_engine_cs *ring;
+	struct intel_guc guc;
+	struct i915_guc_client client = { .client_obj = 0 };
+	enum intel_ring_id i;
+	u64 total = 0;
+
+	if (!HAS_GUC_SCHED(dev_priv->dev))
+		return 0;
+
+	/* Take a local copy of the GuC data, so we can dump it at leisure */
+	spin_lock(&dev_priv->guc.host2guc_lock);
+	guc = dev_priv->guc;
+	if (guc.execbuf_client) {
+		spin_lock(&guc.execbuf_client->wq_lock);
+		client = *guc.execbuf_client;
+		spin_unlock(&guc.execbuf_client->wq_lock);
+	}
+	spin_unlock(&dev_priv->guc.host2guc_lock);
+
+	seq_printf(m, "GuC total action count: %llu\n", guc.action_count);
+	seq_printf(m, "GuC last action command: 0x%x\n", guc.action_cmd);
+	seq_printf(m, "GuC last action status: 0x%x\n", guc.action_status);
+
+	seq_printf(m, "GuC action failure count: %u\n", guc.action_fail);
+	seq_printf(m, "GuC last action error code: %d\n", guc.action_err);
+
+	seq_printf(m, "\nGuC submissions:\n");
+	for_each_ring(ring, dev_priv, i) {
+		seq_printf(m, "\t%-24s: %10llu, last seqno 0x%08x %9d\n",
+			ring->name, guc.submissions[i],
+			guc.last_seqno[i], guc.last_seqno[i]);
+		total += guc.submissions[i];
+	}
+	seq_printf(m, "\t%s: %llu\n", "Total", total);
+
+	seq_printf(m, "\nGuC execbuf client @ %p:\n", guc.execbuf_client);
+	seq_printf(m, "\tTotal submissions: %llu\n", client.submissions);
+	seq_printf(m, "\tFailed to queue: %u\n", client.q_fail);
+	seq_printf(m, "\tFailed doorbell: %u\n", client.b_fail);
+	seq_printf(m, "\tLast submission result: %d\n", client.retcode);
+
+	/* Add more as required ... */
+
+	return 0;
+}
+
 static int i915_guc_log_dump(struct seq_file *m, void *data)
 {
 	struct drm_info_node *node = m->private;
@@ -5131,6 +5182,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
 	{"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
 	{"i915_gem_hws_vebox", i915_hws_info, 0, (void *)VECS},
 	{"i915_gem_batch_pool", i915_gem_batch_pool_info, 0},
+	{"i915_guc_info", i915_guc_info, 0},
 	{"i915_guc_load_status", i915_guc_load_status_info, 0},
 	{"i915_guc_log_dump", i915_guc_log_dump, 0},
 	{"i915_frequency_info", i915_frequency_info, 0},
-- 
1.9.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx