drm/vmwgfx: Add debug message for layout change ioctl

Add debug code to check user-space layout change request.

Signed-off-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>

2 files changed, 16 insertions, 0 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 5971c0d47507..b4c8817dc267 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -1424,6 +1424,14 @@ int vmw_host_log(const char *log);
 #define VMW_DEBUG_USER(fmt, ...)                                              \
         DRM_DEBUG_DRIVER(fmt, ##__VA_ARGS__)
 
+/**
+ * VMW_DEBUG_KMS - Debug output for kernel mode-setting
+ *
+ * This macro is for debugging vmwgfx mode-setting code.
+ */
+#define VMW_DEBUG_KMS(fmt, ...)                                               \
+        DRM_DEBUG_DRIVER(fmt, ##__VA_ARGS__)
+
 /* Resource dirtying - vmwgfx_page_dirty.c */
 void vmw_bo_dirty_scan(struct vmw_buffer_object *vbo);
 int vmw_bo_dirty_add(struct vmw_buffer_object *vbo);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index b97bc8e5944b..7f9264a72e1d 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -2347,6 +2347,9 @@ int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
 
         if (!arg->num_outputs) {
                 struct drm_rect def_rect = {0, 0, 800, 600};
+                VMW_DEBUG_KMS("Default layout x1 = %d y1 = %d x2 = %d y2 = %d\n",
+                              def_rect.x1, def_rect.y1,
+                              def_rect.x2, def_rect.y2);
                 vmw_du_update_layout(dev_priv, 1, &def_rect);
                 return 0;
         }
@@ -2367,6 +2370,7 @@ int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
 
         drm_rects = (struct drm_rect *)rects;
 
+        VMW_DEBUG_KMS("Layout count = %u\n", arg->num_outputs);
         for (i = 0; i < arg->num_outputs; i++) {
                 struct drm_vmw_rect curr_rect;
 
@@ -2383,6 +2387,10 @@ int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
                 drm_rects[i].x2 = curr_rect.x + curr_rect.w;
                 drm_rects[i].y2 = curr_rect.y + curr_rect.h;
 
+                VMW_DEBUG_KMS("  x1 = %d y1 = %d x2 = %d y2 = %d\n",
+                              drm_rects[i].x1, drm_rects[i].y1,
+                              drm_rects[i].x2, drm_rects[i].y2);
+
                 /*
                  * Currently this check is limiting the topology within
                  * mode_config->max (which actually is max texture size