drm/nouveau: Introduce GEM object functions

GEM object functions deprecate several similar callback interfaces in
struct drm_driver. This patch replaces the per-driver callbacks with
per-instance callbacks in nouveau.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200923102159.24084-11-tzimmermann@suse.de

drivers/gpu/drm/nouveau/nouveau_drm.c

@@ -1207,16 +1207,7 @@ driver_stub = {
 
 	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
-	.gem_prime_pin = nouveau_gem_prime_pin,
-	.gem_prime_unpin = nouveau_gem_prime_unpin,
-	.gem_prime_get_sg_table = nouveau_gem_prime_get_sg_table,
 	.gem_prime_import_sg_table = nouveau_gem_prime_import_sg_table,
-	.gem_prime_vmap = nouveau_gem_prime_vmap,
-	.gem_prime_vunmap = nouveau_gem_prime_vunmap,
-
-	.gem_free_object_unlocked = nouveau_gem_object_del,
-	.gem_open_object = nouveau_gem_object_open,
-	.gem_close_object = nouveau_gem_object_close,
 
 	.dumb_create = nouveau_display_dumb_create,
 	.dumb_map_offset = nouveau_display_dumb_map_offset,

drivers/gpu/drm/nouveau/nouveau_gem.c

@@ -169,6 +169,17 @@ nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 	ttm_bo_unreserve(&nvbo->bo);
 }
 
+const struct drm_gem_object_funcs nouveau_gem_object_funcs = {
+	.free = nouveau_gem_object_del,
+	.open = nouveau_gem_object_open,
+	.close = nouveau_gem_object_close,
+	.pin = nouveau_gem_prime_pin,
+	.unpin = nouveau_gem_prime_unpin,
+	.get_sg_table = nouveau_gem_prime_get_sg_table,
+	.vmap = nouveau_gem_prime_vmap,
+	.vunmap = nouveau_gem_prime_vunmap,
+};
+
 int
 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 		uint32_t tile_mode, uint32_t tile_flags,
@@ -186,6 +197,8 @@ nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 	if (IS_ERR(nvbo))
 		return PTR_ERR(nvbo);
 
+	nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
+
 	/* Initialize the embedded gem-object. We return a single gem-reference
 	 * to the caller, instead of a normal nouveau_bo ttm reference. */
 	ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);

drivers/gpu/drm/nouveau/nouveau_gem.h

@@ -5,6 +5,8 @@
 #include "nouveau_drv.h"
 #include "nouveau_bo.h"
 
+extern const struct drm_gem_object_funcs nouveau_gem_object_funcs;
+
 static inline struct nouveau_bo *
 nouveau_gem_object(struct drm_gem_object *gem)
 {

drivers/gpu/drm/nouveau/nouveau_prime.c

@@ -77,6 +77,8 @@ struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev,
 
 	nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART;
 
+	nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
+
 	/* Initialize the embedded gem-object. We return a single gem-reference
 	 * to the caller, instead of a normal nouveau_bo ttm reference. */
 	ret = drm_gem_object_init(dev, &nvbo->bo.base, size);