drm/i915/bdw: Display context backing obj & ringbuffer info in debugfs

Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Checkpatch.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 33 insertions, 4 deletions

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 68335813ef4c..4f279cfe67b8 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1677,6 +1677,14 @@ 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)
 {
         struct drm_info_node *node = m->private;
@@ -1703,16 +1711,37 @@ 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 ");
                 describe_ctx(m, ctx);
-                for_each_ring(ring, dev_priv, i)
+                for_each_ring(ring, dev_priv, i) {
                         if (ring->default_context == ctx)
-                                seq_printf(m, "(default context %s) ", ring->name);
+                                seq_printf(m, "(default context %s) ",
+                                           ring->name);
+                }
+
+                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);
+                }
 
-                describe_obj(m, ctx->legacy_hw_ctx.rcs_state);
                 seq_putc(m, '\n');
         }