summaryrefslogtreecommitdiff
path: root/include/drm/drm_gem_vram_helper.h
diff options
context:
space:
mode:
authorThomas Zimmermann <tzimmermann@suse.de>2019-05-08 11:26:18 +0300
committerGerd Hoffmann <kraxel@redhat.com>2019-05-15 17:17:06 +0300
commit59f5989ad42b6edd089b47895986ef15259822dc (patch)
tree8054d6410183e4d61439822a31446fbf4a3f5226 /include/drm/drm_gem_vram_helper.h
parent5c9dcacfe56673555540933017c54e8f39e947cb (diff)
downloadlinux-59f5989ad42b6edd089b47895986ef15259822dc.tar.xz
drm: Integrate VRAM MM into struct drm_device
There's now a pointer to struct drm_vram_mm stored in struct drm_device. DRM drivers that use VRAM MM should use this field to refer to their instance of the data structure. Appropriate helpers are now provided as well. Adding struct drm_vram_mm to struct drm_device further avoids wrappers and boilerplate code in drivers. This patch implements default functions for callbacks in struct drm_driver and struct file_operations that use the struct drm_vram_mm stored in struct drm_device. Drivers that need to provide their own implementations can still do so. The patch also adds documentation for the VRAM helper library in general. v5: * set .llseek to no_llseek() from DRM_VRAM_MM_FILE_OPERATIONS v4: * cleanups from checkpatch.pl * document VRAM helper library Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: http://patchwork.freedesktop.org/patch/msgid/20190508082630.15116-9-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'include/drm/drm_gem_vram_helper.h')
-rw-r--r--include/drm/drm_gem_vram_helper.h19
1 files changed, 18 insertions, 1 deletions
diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h
index 7971656afe87..b056f189ba62 100644
--- a/include/drm/drm_gem_vram_helper.h
+++ b/include/drm/drm_gem_vram_helper.h
@@ -11,6 +11,7 @@
struct drm_mode_create_dumb;
struct drm_vram_mm_funcs;
struct filp;
+struct vm_area_struct;
#define DRM_GEM_VRAM_PL_FLAG_VRAM TTM_PL_FLAG_VRAM
#define DRM_GEM_VRAM_PL_FLAG_SYSTEM TTM_PL_FLAG_SYSTEM
@@ -115,10 +116,26 @@ extern const struct drm_vram_mm_funcs drm_gem_vram_mm_funcs;
*/
void drm_gem_vram_driver_gem_free_object_unlocked(struct drm_gem_object *gem);
-
+int drm_gem_vram_driver_dumb_create(struct drm_file *file,
+ struct drm_device *dev,
+ struct drm_mode_create_dumb *args);
int drm_gem_vram_driver_dumb_mmap_offset(struct drm_file *file,
struct drm_device *dev,
uint32_t handle, uint64_t *offset);
+
+/**
+ * define DRM_GEM_VRAM_DRIVER - default callback functions for \
+ &struct drm_driver
+ *
+ * Drivers that use VRAM MM and GEM VRAM can use this macro to initialize
+ * &struct drm_driver with default functions.
+ */
+#define DRM_GEM_VRAM_DRIVER \
+ .gem_free_object_unlocked = \
+ drm_gem_vram_driver_gem_free_object_unlocked, \
+ .dumb_create = drm_gem_vram_driver_dumb_create, \
+ .dumb_map_offset = drm_gem_vram_driver_dumb_mmap_offset
+
/*
* PRIME helpers for struct drm_driver
*/