drm/i915/skl: Add a debugfs file to dump the DDB allocation (c5511e44) · Commits · 戴 / test

drivers/gpu/drm/i915/i915_debugfs.c

+37 −0

Original line number	Diff line number	Diff line
		@@ -2679,6 +2679,42 @@ static int i915_wa_registers(struct seq_file m, void unused)
		return 0;
		}

		static int i915_ddb_info(struct seq_file m, void unused)
		{
		struct drm_info_node *node = m->private;
		struct drm_device *dev = node->minor->dev;
		struct drm_i915_private *dev_priv = dev->dev_private;
		struct skl_ddb_allocation *ddb;
		struct skl_ddb_entry *entry;
		enum pipe pipe;
		int plane;

		drm_modeset_lock_all(dev);

		ddb = &dev_priv->wm.skl_hw.ddb;

		seq_printf(m, "%-15s%8s%8s%8s\n", "", "Start", "End", "Size");

		for_each_pipe(dev_priv, pipe) {
		seq_printf(m, "Pipe %c\n", pipe_name(pipe));

		for_each_plane(pipe, plane) {
		entry = &ddb->plane[pipe][plane];
		seq_printf(m, " Plane%-8d%8u%8u%8u\n", plane + 1,
		entry->start, entry->end,
		skl_ddb_entry_size(entry));
		}

		entry = &ddb->cursor[pipe];
		seq_printf(m, " %-13s%8u%8u%8u\n", "Cursor", entry->start,
		entry->end, skl_ddb_entry_size(entry));
		}

		drm_modeset_unlock_all(dev);

		return 0;
		}

		struct pipe_crc_info {
		const char *name;
		struct drm_device *dev;
		@@ -4252,6 +4288,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
		{"i915_shared_dplls_info", i915_shared_dplls_info, 0},
		{"i915_dp_mst_info", i915_dp_mst_info, 0},
		{"i915_wa_registers", i915_wa_registers, 0},
		{"i915_ddb_info", i915_ddb_info, 0},
		};
		#define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)