diff options
Diffstat (limited to 'drivers/gpu/drm/drm_gem.c')
| -rw-r--r-- | drivers/gpu/drm/drm_gem.c | 47 |
1 files changed, 43 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index 4012fe42346..186d62eb063 100644 --- a/drivers/gpu/drm/drm_gem.c +++ b/drivers/gpu/drm/drm_gem.c @@ -129,7 +129,7 @@ drm_gem_destroy(struct drm_device *dev) } /** - * Initialize an already allocate GEM object of the specified size with + * Initialize an already allocated GEM object of the specified size with * shmfs backing store. */ int drm_gem_object_init(struct drm_device *dev, @@ -151,6 +151,27 @@ int drm_gem_object_init(struct drm_device *dev, EXPORT_SYMBOL(drm_gem_object_init); /** + * Initialize an already allocated GEM object of the specified size with + * no GEM provided backing store. Instead the caller is responsible for + * backing the object and handling it. + */ +int drm_gem_private_object_init(struct drm_device *dev, + struct drm_gem_object *obj, size_t size) +{ + BUG_ON((size & (PAGE_SIZE - 1)) != 0); + + obj->dev = dev; + obj->filp = NULL; + + kref_init(&obj->refcount); + atomic_set(&obj->handle_count, 0); + obj->size = size; + + return 0; +} +EXPORT_SYMBOL(drm_gem_private_object_init); + +/** * Allocate a GEM object of the specified size with shmfs backing store */ struct drm_gem_object * @@ -211,6 +232,8 @@ drm_gem_handle_delete(struct drm_file *filp, u32 handle) idr_remove(&filp->object_idr, handle); spin_unlock(&filp->table_lock); + if (dev->driver->gem_close_object) + dev->driver->gem_close_object(obj, filp); drm_gem_object_handle_unreference_unlocked(obj); return 0; @@ -227,7 +250,8 @@ drm_gem_handle_create(struct drm_file *file_priv, struct drm_gem_object *obj, u32 *handlep) { - int ret; + struct drm_device *dev = obj->dev; + int ret; /* * Get the user-visible handle using idr. @@ -248,6 +272,15 @@ again: return ret; drm_gem_object_handle_reference(obj); + + if (dev->driver->gem_open_object) { + ret = dev->driver->gem_open_object(obj, file_priv); + if (ret) { + drm_gem_handle_delete(file_priv, *handlep); + return ret; + } + } + return 0; } EXPORT_SYMBOL(drm_gem_handle_create); @@ -402,7 +435,12 @@ drm_gem_open(struct drm_device *dev, struct drm_file *file_private) static int drm_gem_object_release_handle(int id, void *ptr, void *data) { + struct drm_file *file_priv = data; struct drm_gem_object *obj = ptr; + struct drm_device *dev = obj->dev; + + if (dev->driver->gem_close_object) + dev->driver->gem_close_object(obj, file_priv); drm_gem_object_handle_unreference_unlocked(obj); @@ -418,7 +456,7 @@ void drm_gem_release(struct drm_device *dev, struct drm_file *file_private) { idr_for_each(&file_private->object_idr, - &drm_gem_object_release_handle, NULL); + &drm_gem_object_release_handle, file_private); idr_remove_all(&file_private->object_idr); idr_destroy(&file_private->object_idr); @@ -427,7 +465,8 @@ drm_gem_release(struct drm_device *dev, struct drm_file *file_private) void drm_gem_object_release(struct drm_gem_object *obj) { - fput(obj->filp); + if (obj->filp) + fput(obj->filp); } EXPORT_SYMBOL(drm_gem_object_release); |