mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Lyude PaulandDanilo Krummrich
0023a1e8d0
Now that we have the ability to represent the context in which a DRM device is in at compile-time, we can start carrying around this context with GEM object types in order to allow a driver to safely create GEM objects before a DRM device has registered with userspace. Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Link: https://patch.msgid.link/20260507220044.3204919-4-lyude@redhat.com Signed-off-by: Danilo Krummrich <dakr@kernel.org>
86 lines
2.2 KiB
Rust
86 lines
2.2 KiB
Rust
// SPDX-License-Identifier: GPL-2.0
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use kernel::{
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auxiliary,
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device::Core,
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drm::{
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self,
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gem,
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ioctl, //
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},
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prelude::*,
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sync::aref::ARef, //
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};
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use crate::file::File;
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use crate::gem::NovaObject;
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pub(crate) struct NovaDriver;
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pub(crate) struct Nova {
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#[expect(unused)]
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drm: ARef<drm::Device<NovaDriver>>,
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}
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/// Convienence type alias for the DRM device type for this driver
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pub(crate) type NovaDevice<Ctx = drm::Registered> = drm::Device<NovaDriver, Ctx>;
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#[pin_data]
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pub(crate) struct NovaData {
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pub(crate) adev: ARef<auxiliary::Device>,
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}
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const INFO: drm::DriverInfo = drm::DriverInfo {
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major: 0,
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minor: 0,
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patchlevel: 0,
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name: c"nova-drm",
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desc: c"NVIDIA Graphics and Compute",
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};
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const NOVA_CORE_MODULE_NAME: &CStr = c"nova-core";
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const AUXILIARY_NAME: &CStr = c"nova-drm";
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kernel::auxiliary_device_table!(
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AUX_TABLE,
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MODULE_AUX_TABLE,
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<NovaDriver as auxiliary::Driver>::IdInfo,
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[(
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auxiliary::DeviceId::new(NOVA_CORE_MODULE_NAME, AUXILIARY_NAME),
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()
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)]
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);
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impl auxiliary::Driver for NovaDriver {
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type IdInfo = ();
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type Data<'bound> = Nova;
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const ID_TABLE: auxiliary::IdTable<Self::IdInfo> = &AUX_TABLE;
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fn probe<'bound>(
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adev: &'bound auxiliary::Device<Core<'_>>,
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_info: &'bound Self::IdInfo,
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) -> impl PinInit<Self::Data<'bound>, Error> + 'bound {
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let data = try_pin_init!(NovaData { adev: adev.into() });
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let drm = drm::UnregisteredDevice::<Self>::new(adev.as_ref(), data)?;
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let drm = drm::Registration::new_foreign_owned(drm, adev.as_ref(), 0)?;
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Ok(Nova { drm: drm.into() })
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}
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}
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#[vtable]
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impl drm::Driver for NovaDriver {
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type Data = NovaData;
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type File = File;
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type Object<Ctx: drm::DeviceContext> = gem::Object<NovaObject, Ctx>;
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const INFO: drm::DriverInfo = INFO;
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kernel::declare_drm_ioctls! {
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(NOVA_GETPARAM, drm_nova_getparam, ioctl::RENDER_ALLOW, File::get_param),
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(NOVA_GEM_CREATE, drm_nova_gem_create, ioctl::AUTH | ioctl::RENDER_ALLOW, File::gem_create),
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(NOVA_GEM_INFO, drm_nova_gem_info, ioctl::AUTH | ioctl::RENDER_ALLOW, File::gem_info),
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}
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}
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