[Intel-gfx] [PATCH 47/53] drm/i915/bdw: Display context backing obj & ringbuffer info in debugfs

[oscar.mateo at intel.com]

From: Oscar Mateo <oscar.mateo at intel.com>

Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 3ccdf0d..e5db287 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1708,6 +1708,12 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 
 	return 0;
 }
+static void describe_ctx_ringbuf(struct seq_file *m, struct intel_ringbuffer *ringbuf)
+{
+	seq_printf(m, " (ringbuffer, space: %d, head: %u, tail: %u, last head: %d)",
+			ringbuf->space, ringbuf->head, ringbuf->tail,
+			ringbuf->last_retired_head);
+}
 
 static int i915_context_status(struct seq_file *m, void *unused)
 {
@@ -1716,6 +1722,7 @@ static int i915_context_status(struct seq_file *m, void *unused)
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_engine_cs *ring;
 	struct intel_context *ctx;
+	bool exl_enabled = intel_enable_execlists(dev);
 	int ret, i;
 
 	ret = mutex_lock_interruptible(&dev->struct_mutex);
@@ -1735,7 +1742,7 @@ static int i915_context_status(struct seq_file *m, void *unused)
 	}
 
 	list_for_each_entry(ctx, &dev_priv->context_list, link) {
-		if (ctx->render_obj == NULL)
+		if (!exl_enabled && ctx->render_obj == NULL)
 			continue;
 
 		seq_puts(m, "HW context ");
@@ -1744,7 +1751,22 @@ static int i915_context_status(struct seq_file *m, void *unused)
 			if (ring->default_context == ctx)
 				seq_printf(m, "(default context %s) ", ring->name);
 
-		describe_obj(m, ctx->render_obj);
+		if (exl_enabled) {
+			seq_putc(m, '\n');
+			for_each_ring(ring, dev_priv, i) {
+				struct drm_i915_gem_object *ctx_obj = ctx->engine[i].obj;
+				struct intel_ringbuffer *ringbuf = ctx->engine[i].ringbuf;
+
+				seq_printf(m, "%s: ", ring->name);
+				if (ctx_obj)
+					describe_obj(m, ctx_obj);
+				if (ringbuf)
+					describe_ctx_ringbuf(m, ringbuf);
+				seq_putc(m, '\n');
+			}
+		} else
+			describe_obj(m, ctx->render_obj);
+
 		seq_putc(m, '\n');
 	}
 
-- 
1.9.0