mirror of https://github.com/torvalds/linux.git
50 lines
1.1 KiB
Rust
50 lines
1.1 KiB
Rust
// SPDX-License-Identifier: GPL-2.0
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use kernel::{
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drm,
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drm::{gem, gem::BaseObject},
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prelude::*,
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types::ARef,
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};
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use crate::{
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driver::{NovaDevice, NovaDriver},
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file::File,
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};
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/// GEM Object inner driver data
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#[pin_data]
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pub(crate) struct NovaObject {}
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impl gem::BaseDriverObject<gem::Object<NovaObject>> for NovaObject {
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fn new(_dev: &NovaDevice, _size: usize) -> impl PinInit<Self, Error> {
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try_pin_init!(NovaObject {})
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}
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}
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impl gem::DriverObject for NovaObject {
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type Driver = NovaDriver;
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}
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impl NovaObject {
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/// Create a new DRM GEM object.
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pub(crate) fn new(dev: &NovaDevice, size: usize) -> Result<ARef<gem::Object<Self>>> {
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let aligned_size = size.next_multiple_of(1 << 12);
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if size == 0 || size > aligned_size {
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return Err(EINVAL);
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}
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gem::Object::new(dev, aligned_size)
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}
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/// Look up a GEM object handle for a `File` and return an `ObjectRef` for it.
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#[inline]
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pub(crate) fn lookup_handle(
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file: &drm::File<File>,
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handle: u32,
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) -> Result<ARef<gem::Object<Self>>> {
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gem::Object::lookup_handle(file, handle)
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}
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}
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