drm/tegra: Provide debugfs file for the IOVA space
authorThierry Reding <treding@nvidia.com>
Fri, 23 Jan 2015 08:16:03 +0000 (09:16 +0100)
committerThierry Reding <treding@nvidia.com>
Thu, 2 Apr 2015 16:46:14 +0000 (18:46 +0200)
The Tegra DRM driver uses a single IO virtual address space for buffer
mappings. Provide a table of the address space usage in debugfs.

Signed-off-by: Thierry Reding <treding@nvidia.com>
drivers/gpu/drm/tegra/drm.c

index 7dd328d77996f77101d77e43f41049c66202bfcd..7ba7e2860ac85d66e7b8363f64449ce5d08d6e85 100644 (file)
@@ -879,8 +879,18 @@ static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
        return 0;
 }
 
+static int tegra_debugfs_iova(struct seq_file *s, void *data)
+{
+       struct drm_info_node *node = (struct drm_info_node *)s->private;
+       struct drm_device *drm = node->minor->dev;
+       struct tegra_drm *tegra = drm->dev_private;
+
+       return drm_mm_dump_table(s, &tegra->mm);
+}
+
 static struct drm_info_list tegra_debugfs_list[] = {
        { "framebuffers", tegra_debugfs_framebuffers, 0 },
+       { "iova", tegra_debugfs_iova, 0 },
 };
 
 static int tegra_debugfs_init(struct drm_minor *minor)