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// SPDX-License-Identifier: GPL-2.0
use kernel::{
drm::{
gem,
gem::{BaseObject, ObjectRef},
},
prelude::*,
};
use crate::{
driver::{NovaDevice, NovaDriver},
file::DrmFile,
};
/// GEM Object inner driver data
#[pin_data]
pub(crate) struct DriverObject {}
/// Type alias for the GEM object tyoe for this driver.
pub(crate) type Object = gem::Object<DriverObject>;
impl gem::BaseDriverObject<Object> for DriverObject {
fn new(dev: &NovaDevice, _size: usize) -> impl PinInit<Self, Error> {
dev_dbg!(dev.as_ref(), "DriverObject::new\n");
DriverObject {}
}
}
impl gem::DriverObject for DriverObject {
type Driver = NovaDriver;
}
/// Create a new DRM GEM object.
pub(crate) fn object_new(dev: &NovaDevice, size: usize) -> Result<ObjectRef<Object>> {
let aligned_size = size.next_multiple_of(1 << 12);
if size == 0 || size > aligned_size {
return Err(EINVAL);
}
let gem = Object::new(dev, aligned_size)?;
Ok(ObjectRef::from_pinned_unique(gem))
}
/// Look up a GEM object handle for a `File` and return an `ObjectRef` for it.
pub(crate) fn lookup_handle(file: &DrmFile, handle: u32) -> Result<ObjectRef<Object>> {
Object::lookup_handle(file, handle)
}
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