[PATCH 38/43] drm/i915/bdw: Display context backing obj & ringbuffer info in debugfs

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From: Oscar Mateo <oscar.mateo@xxxxxxxxx>

Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_debugfs.c |   25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 903ed67..0980cdd 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1629,6 +1629,12 @@ 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)
 {
@@ -1656,7 +1662,7 @@ static int i915_context_status(struct seq_file *m, void *unused)
 	}
 
 	list_for_each_entry(ctx, &dev_priv->context_list, link) {
-		if (ctx->legacy_hw_ctx.rcs_state == NULL)
+		if (!i915.enable_execlists && ctx->legacy_hw_ctx.rcs_state == NULL)
 			continue;
 
 		seq_puts(m, "HW context ");
@@ -1665,7 +1671,22 @@ 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->legacy_hw_ctx.rcs_state);
+		if (i915.enable_execlists) {
+			seq_putc(m, '\n');
+			for_each_ring(ring, dev_priv, i) {
+				struct drm_i915_gem_object *ctx_obj = ctx->engine[i].state;
+				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->legacy_hw_ctx.rcs_state);
+
 		seq_putc(m, '\n');
 	}
 
-- 
1.7.9.5

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