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// SPDX-License-Identifier: GPL-2.0
// SPDX-FileCopyrightText: Copyright (c) 2025-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
use kernel::{
device,
pci,
prelude::*,
transmute::{
AsBytes,
FromBytes, //
}, //
};
use crate::{
gpu::Chipset,
gsp::GSP_PAGE_SIZE, //
};
use super::bindings;
/// Payload of the `GspSetSystemInfo` command.
#[repr(transparent)]
pub(crate) struct GspSetSystemInfo {
inner: bindings::GspSystemInfo,
}
static_assert!(size_of::<GspSetSystemInfo>() < GSP_PAGE_SIZE);
impl GspSetSystemInfo {
/// Returns an in-place initializer for the `GspSetSystemInfo` command.
#[allow(non_snake_case)]
pub(crate) fn init<'a>(
dev: &'a pci::Device<device::Bound>,
chipset: Chipset,
) -> impl Init<Self, Error> + 'a {
type InnerGspSystemInfo = bindings::GspSystemInfo;
let pci_config_mirror_range = chipset.pci_config_mirror_range();
let init_inner = try_init!(InnerGspSystemInfo {
gpuPhysAddr: dev.resource_start(0)?,
gpuPhysFbAddr: dev.resource_start(1)?,
gpuPhysInstAddr: dev.resource_start(3)?,
nvDomainBusDeviceFunc: u64::from(dev.dev_id()),
// Using TASK_SIZE in r535_gsp_rpc_set_system_info() seems wrong because
// TASK_SIZE is per-task. That's probably a design issue in GSP-RM though.
maxUserVa: (1 << 47) - 4096,
pciConfigMirrorBase: pci_config_mirror_range.start,
pciConfigMirrorSize: pci_config_mirror_range.end - pci_config_mirror_range.start,
PCIDeviceID: (u32::from(dev.device_id()) << 16) | u32::from(dev.vendor_id().as_raw()),
PCISubDeviceID: (u32::from(dev.subsystem_device_id()) << 16)
| u32::from(dev.subsystem_vendor_id()),
PCIRevisionID: u32::from(dev.revision_id()),
bIsPrimary: 0,
bPreserveVideoMemoryAllocations: 0,
..Zeroable::init_zeroed()
});
try_init!(GspSetSystemInfo {
inner <- init_inner,
})
}
}
// SAFETY: These structs don't meet the no-padding requirements of AsBytes but
// that is not a problem because they are not used outside the kernel.
unsafe impl AsBytes for GspSetSystemInfo {}
// SAFETY: These structs don't meet the no-padding requirements of FromBytes but
// that is not a problem because they are not used outside the kernel.
unsafe impl FromBytes for GspSetSystemInfo {}
#[repr(transparent)]
pub(crate) struct PackedRegistryEntry(bindings::PACKED_REGISTRY_ENTRY);
impl PackedRegistryEntry {
pub(crate) fn new(offset: u32, value: u32) -> Self {
Self({
bindings::PACKED_REGISTRY_ENTRY {
nameOffset: offset,
// We only support DWORD types for now. Support for other types
// will come later if required.
type_: bindings::REGISTRY_TABLE_ENTRY_TYPE_DWORD as u8,
__bindgen_padding_0: Default::default(),
data: value,
length: 0,
}
})
}
}
// SAFETY: Padding is explicit and will not contain uninitialized data.
unsafe impl AsBytes for PackedRegistryEntry {}
/// Payload of the `SetRegistry` command.
#[repr(transparent)]
pub(crate) struct PackedRegistryTable {
inner: bindings::PACKED_REGISTRY_TABLE,
}
impl PackedRegistryTable {
#[allow(non_snake_case)]
pub(crate) fn init(num_entries: u32, size: u32) -> impl Init<Self> {
type InnerPackedRegistryTable = bindings::PACKED_REGISTRY_TABLE;
let init_inner = init!(InnerPackedRegistryTable {
numEntries: num_entries,
size,
entries: Default::default()
});
init!(PackedRegistryTable { inner <- init_inner })
}
}
// SAFETY: Padding is explicit and will not contain uninitialized data.
unsafe impl AsBytes for PackedRegistryTable {}
// SAFETY: This struct only contains integer types for which all bit patterns
// are valid.
unsafe impl FromBytes for PackedRegistryTable {}
/// Payload of the `GetGspStaticInfo` command and message.
#[repr(transparent)]
#[derive(Zeroable)]
pub(crate) struct GspStaticConfigInfo(bindings::GspStaticConfigInfo_t);
impl GspStaticConfigInfo {
/// Returns a bytes array containing the (hopefully) zero-terminated name of this GPU.
pub(crate) fn gpu_name_str(&self) -> [u8; 64] {
self.0.gpuNameString
}
}
// SAFETY: Padding is explicit and will not contain uninitialized data.
unsafe impl AsBytes for GspStaticConfigInfo {}
// SAFETY: This struct only contains integer types for which all bit patterns
// are valid.
unsafe impl FromBytes for GspStaticConfigInfo {}
/// Power level requested to the [`UnloadingGuestDriver`] command.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
#[repr(u32)]
#[expect(unused)]
pub(crate) enum PowerStateLevel {
/// Full unload.
Level0 = bindings::NV2080_CTRL_GPU_SET_POWER_STATE_GPU_LEVEL_0,
/// S3 (suspend to RAM).
Level3 = bindings::NV2080_CTRL_GPU_SET_POWER_STATE_GPU_LEVEL_3,
/// Hibernate (suspend to disk).
Level7 = bindings::NV2080_CTRL_GPU_SET_POWER_STATE_GPU_LEVEL_7,
}
impl PowerStateLevel {
/// Returns `true` if this state represents a power management transition, i.e. some GPU state
/// must survive it (as opposed to a full unload).
pub(crate) fn is_power_transition(self) -> bool {
self != PowerStateLevel::Level0
}
}
/// Payload of the `UnloadingGuestDriver` command and message.
#[repr(transparent)]
#[derive(Clone, Copy, Debug, Zeroable)]
pub(crate) struct UnloadingGuestDriver(bindings::rpc_unloading_guest_driver_v1F_07);
impl UnloadingGuestDriver {
pub(crate) fn new(level: PowerStateLevel) -> Self {
Self(bindings::rpc_unloading_guest_driver_v1F_07 {
bInPMTransition: u8::from(level.is_power_transition()),
bGc6Entering: 0,
newLevel: level as u32,
..Zeroable::zeroed()
})
}
}
// SAFETY: Padding is explicit and will not contain uninitialized data.
unsafe impl AsBytes for UnloadingGuestDriver {}
// SAFETY: This struct only contains integer types for which all bit patterns
// are valid.
unsafe impl FromBytes for UnloadingGuestDriver {}
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