// SPDX-License-Identifier: GPL-2.0 use kernel::{ auxiliary, device::Core, pci, pci::{ Class, ClassMask, Vendor, // }, prelude::*, sizes::SZ_16M, sync::atomic::{ Atomic, Relaxed, // }, types::CovariantForLt,}; use crate::gpu::Gpu; /// Counter for generating unique auxiliary device IDs.static AUXILIARY_ID_COUNTER: Atomic<u32> = Atomic::new(0); #[pin_data]pub(crate) struct NovaCore<'bound> { #[pin] pub(crate) gpu: Gpu<'bound>, bar: pci::Bar<'bound, BAR0_SIZE>, #[allow(clippy::type_complexity)] _reg: auxiliary::Registration<'bound, CovariantForLt!(())>,} pub(crate) struct NovaCoreDriver; const BAR0_SIZE: usize = SZ_16M; pub(crate) type Bar0<'a> = &'a pci::Bar<'a, BAR0_SIZE>; kernel::pci_device_table!( PCI_TABLE, <NovaCoreDriver as pci::Driver>::IdInfo, [ // Modern NVIDIA GPUs will show up as either VGA or 3D controllers. ( pci::DeviceId::from_class_and_vendor( Class::DISPLAY_VGA, ClassMask::ClassSubclass, Vendor::NVIDIA ), () ), ( pci::DeviceId::from_class_and_vendor( Class::DISPLAY_3D, ClassMask::ClassSubclass, Vendor::NVIDIA ), () ), ]); impl pci::Driver for NovaCoreDriver { type IdInfo = (); type Data<'bound> = NovaCore<'bound>; const ID_TABLE: pci::IdTable<Self::IdInfo> = &PCI_TABLE; fn probe<'bound>( pdev: &'bound pci::Device<Core<'_>>, _info: Option<&'bound Self::IdInfo>, ) -> impl PinInit<Self::Data<'bound>, Error> + 'bound { pin_init::pin_init_scope(move || { dev_dbg!(pdev, "Probe Nova Core GPU driver.\n"); pdev.enable_device_mem()?; pdev.set_master(); Ok(try_pin_init!(NovaCore { bar: pdev.iomap_region_sized::<BAR0_SIZE>(0, c"nova-core/bar0")?, // TODO: Use `&bar` self-referential pin-init syntax once available. // // SAFETY: `bar` is initialized before this expression is evaluated // (`try_pin_init!()` initializes fields in declaration order), lives at a pinned // stable address, and is dropped after `gpu` (struct field drop order). gpu <- Gpu::new(pdev, unsafe { &*core::ptr::from_ref(bar) }), _reg: auxiliary::Registration::new( pdev.as_ref(), c"nova-drm", // TODO[XARR]: Use XArray or perhaps IDA for proper ID allocation/recycling. For // now, use a simple atomic counter that never recycles IDs. AUXILIARY_ID_COUNTER.fetch_add(1, Relaxed), crate::MODULE_NAME, (), )?, })) }) }}
// SPDX-License-Identifier: GPL-2.0
use kernel::{
auxiliary,
device::Core,
pci,
pci::{
Class,
ClassMask,
Vendor, //
},
prelude::*,
sizes::SZ_16M,
sync::atomic::{
Atomic,
Relaxed, //
},
types::CovariantForLt,
};
use crate::gpu::Gpu;
/// Counter for generating unique auxiliary device IDs.
static AUXILIARY_ID_COUNTER: Atomic<u32> = Atomic::new(0);
#[pin_data]
pub(crate) struct NovaCore<'bound> {
#[pin]
pub(crate) gpu: Gpu<'bound>,
bar: pci::Bar<'bound, BAR0_SIZE>,
#[allow(clippy::type_complexity)]
_reg: auxiliary::Registration<'bound, CovariantForLt!(())>,
}
pub(crate) struct NovaCoreDriver;
const BAR0_SIZE: usize = SZ_16M;
pub(crate) type Bar0<'a> = &'a pci::Bar<'a, BAR0_SIZE>;
kernel::pci_device_table!(
PCI_TABLE,
<NovaCoreDriver as pci::Driver>::IdInfo,
[
// Modern NVIDIA GPUs will show up as either VGA or 3D controllers.
(
pci::DeviceId::from_class_and_vendor(
Class::DISPLAY_VGA,
ClassMask::ClassSubclass,
Vendor::NVIDIA
),
()
),
(
pci::DeviceId::from_class_and_vendor(
Class::DISPLAY_3D,
ClassMask::ClassSubclass,
Vendor::NVIDIA
),
()
),
]
);
impl pci::Driver for NovaCoreDriver {
type IdInfo = ();
type Data<'bound> = NovaCore<'bound>;
const ID_TABLE: pci::IdTable<Self::IdInfo> = &PCI_TABLE;
fn probe<'bound>(
pdev: &'bound pci::Device<Core<'_>>,
_info: Option<&'bound Self::IdInfo>,
) -> impl PinInit<Self::Data<'bound>, Error> + 'bound {
pin_init::pin_init_scope(move || {
dev_dbg!(pdev, "Probe Nova Core GPU driver.\n");
pdev.enable_device_mem()?;
pdev.set_master();
Ok(try_pin_init!(NovaCore {
bar: pdev.iomap_region_sized::<BAR0_SIZE>(0, c"nova-core/bar0")?,
// TODO: Use `&bar` self-referential pin-init syntax once available.
//
// SAFETY: `bar` is initialized before this expression is evaluated
// (`try_pin_init!()` initializes fields in declaration order), lives at a pinned
// stable address, and is dropped after `gpu` (struct field drop order).
gpu <- Gpu::new(pdev, unsafe { &*core::ptr::from_ref(bar) }),
_reg: auxiliary::Registration::new(
pdev.as_ref(),
c"nova-drm",
// TODO[XARR]: Use XArray or perhaps IDA for proper ID allocation/recycling. For
// now, use a simple atomic counter that never recycles IDs.
AUXILIARY_ID_COUNTER.fetch_add(1, Relaxed),
crate::MODULE_NAME,
(),
)?,
}))
})
}
}