1 // SPDX-License-Identifier: GPL-2.0 2 3 use kernel::{ 4 drm, 5 drm::{gem, gem::BaseObject}, 6 page, 7 prelude::*, 8 sync::aref::ARef, 9 }; 10 11 use crate::{ 12 driver::{NovaDevice, NovaDriver}, 13 file::File, 14 }; 15 16 /// GEM Object inner driver data 17 #[pin_data] 18 pub(crate) struct NovaObject {} 19 20 impl gem::DriverObject for NovaObject { 21 type Driver = NovaDriver; 22 23 fn new(_dev: &NovaDevice, _size: usize) -> impl PinInit<Self, Error> { 24 try_pin_init!(NovaObject {}) 25 } 26 } 27 28 impl NovaObject { 29 /// Create a new DRM GEM object. 30 pub(crate) fn new(dev: &NovaDevice, size: usize) -> Result<ARef<gem::Object<Self>>> { 31 if size == 0 { 32 return Err(EINVAL); 33 } 34 let aligned_size = page::page_align(size).ok_or(EINVAL)?; 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