1 // SPDX-License-Identifier: GPL-2.0 2 3 use kernel::{ 4 drm, 5 drm::{gem, gem::BaseObject}, 6 prelude::*, 7 sync::aref::ARef, 8 }; 9 10 use crate::{ 11 driver::{NovaDevice, NovaDriver}, 12 file::File, 13 }; 14 15 /// GEM Object inner driver data 16 #[pin_data] 17 pub(crate) struct NovaObject {} 18 19 impl gem::DriverObject for NovaObject { 20 type Driver = NovaDriver; 21 22 fn new(_dev: &NovaDevice, _size: usize) -> impl PinInit<Self, Error> { 23 try_pin_init!(NovaObject {}) 24 } 25 } 26 27 impl NovaObject { 28 /// Create a new DRM GEM object. 29 pub(crate) fn new(dev: &NovaDevice, size: usize) -> Result<ARef<gem::Object<Self>>> { 30 let aligned_size = size.next_multiple_of(1 << 12); 31 32 if size == 0 || size > aligned_size { 33 return Err(EINVAL); 34 } 35 36 gem::Object::new(dev, aligned_size) 37 } 38 39 /// Look up a GEM object handle for a `File` and return an `ObjectRef` for it. 40 #[inline] 41 pub(crate) fn lookup_handle( 42 file: &drm::File<File>, 43 handle: u32, 44 ) -> Result<ARef<gem::Object<Self>>> { 45 gem::Object::lookup_handle(file, handle) 46 } 47 } 48