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 type Args = (); 23 24 fn new(_dev: &NovaDevice, _size: usize, _args: Self::Args) -> impl PinInit<Self, Error> { 25 try_pin_init!(NovaObject {}) 26 } 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 if size == 0 { 33 return Err(EINVAL); 34 } 35 let aligned_size = page::page_align(size).ok_or(EINVAL)?; 36 37 gem::Object::new(dev, aligned_size, ()) 38 } 39 40 /// Look up a GEM object handle for a `File` and return an `ObjectRef` for it. 41 #[inline] 42 pub(crate) fn lookup_handle( 43 file: &drm::File<File>, 44 handle: u32, 45 ) -> Result<ARef<gem::Object<Self>>> { 46 gem::Object::lookup_handle(file, handle) 47 } 48 } 49