1 // SPDX-License-Identifier: GPL-2.0 2 3 use kernel::{ 4 drm, 5 drm::{gem, gem::BaseObject}, 6 prelude::*, 7 types::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::BaseDriverObject<gem::Object<NovaObject>> for NovaObject { 20 fn new(_dev: &NovaDevice, _size: usize) -> impl PinInit<Self, Error> { 21 try_pin_init!(NovaObject {}) 22 } 23 } 24 25 impl gem::DriverObject for NovaObject { 26 type Driver = NovaDriver; 27 } 28 29 impl NovaObject { 30 /// Create a new DRM GEM object. 31 pub(crate) fn new(dev: &NovaDevice, size: usize) -> Result<ARef<gem::Object<Self>>> { 32 let aligned_size = size.next_multiple_of(1 << 12); 33 34 if size == 0 || size > aligned_size { 35 return Err(EINVAL); 36 } 37 38 gem::Object::new(dev, aligned_size) 39 } 40 41 /// Look up a GEM object handle for a `File` and return an `ObjectRef` for it. 42 #[inline] 43 pub(crate) fn lookup_handle( 44 file: &drm::File<File>, 45 handle: u32, 46 ) -> Result<ARef<gem::Object<Self>>> { 47 gem::Object::lookup_handle(file, handle) 48 } 49 } 50