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gpu: nova-core: register auxiliary device for nova-drm

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Register an auxiliary device for nova-drm.

For now always use zero for the auxiliary device's ID; we don't use it
yet anyways. However, once it lands, we should switch to XArray.

Acked-by: Dave Airlie <airlied@redhat.com>
Link: https://lore.kernel.org/r/20250424160452.8070-2-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
This commit is contained in:
Danilo Krummrich 2025-04-24 18:02:49 +02:00
parent 42055939a3
commit e041d81a03
3 changed files with 11 additions and 1 deletions
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1
drivers/gpu/nova-core/Kconfig
View file

@ -1,5 +1,6 @@
config NOVA_CORE config NOVA_CORE
tristate "Nova Core GPU driver" tristate "Nova Core GPU driver"
depends on AUXILIARY_BUS
depends on PCI depends on PCI
depends on RUST depends on RUST
depends on RUST_FW_LOADER_ABSTRACTIONS depends on RUST_FW_LOADER_ABSTRACTIONS

9
drivers/gpu/nova-core/driver.rs
View file

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 // SPDX-License-Identifier: GPL-2.0
use kernel::{bindings, c_str, device::Core, pci, prelude::*}; use kernel::{auxiliary, bindings, c_str, device::Core, pci, prelude::*};
use crate::gpu::Gpu; use crate::gpu::Gpu;
@ -8,6 +8,7 @@ use crate::gpu::Gpu;
pub(crate) struct NovaCore { pub(crate) struct NovaCore {
#[pin] #[pin]
pub(crate) gpu: Gpu, pub(crate) gpu: Gpu,
_reg: auxiliary::Registration,
} }
const BAR0_SIZE: usize = 8; const BAR0_SIZE: usize = 8;
@ -38,6 +39,12 @@ impl pci::Driver for NovaCore {
let this = KBox::pin_init( let this = KBox::pin_init(
try_pin_init!(Self { try_pin_init!(Self {
gpu <- Gpu::new(pdev, bar)?, gpu <- Gpu::new(pdev, bar)?,
_reg: auxiliary::Registration::new(
pdev.as_ref(),
c_str!("nova-drm"),
0, // TODO: Once it lands, use XArray; for now we don't use the ID.
crate::MODULE_NAME
)?,
}), }),
GFP_KERNEL, GFP_KERNEL,
)?; )?;

2
drivers/gpu/nova-core/nova_core.rs
View file

@ -8,6 +8,8 @@ mod gpu;
mod regs; mod regs;
mod util; mod util;
pub(crate) const MODULE_NAME: &kernel::str::CStr = <LocalModule as kernel::ModuleMetadata>::NAME;
kernel::module_pci_driver! { kernel::module_pci_driver! {
type: driver::NovaCore, type: driver::NovaCore,
name: "NovaCore", name: "NovaCore",