From 28c23373b88bcc244b573ea45596a51e9db73d2c Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 23 Jan 2015 09:16:03 +0100 Subject: [PATCH] drm/tegra: Provide debugfs file for the IOVA space 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 --- drivers/gpu/drm/tegra/drm.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 7dd328d77996..7ba7e2860ac8 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -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) -- 2.30.2