mirror of
https://github.com/linux-msm/laptops-kernel.git
synced 2026-08-13 14:19:53 -07:00
John HubbardandAlexandre Courbot
944a0fedca
Add the MCTP (Management Component Transport Protocol) and NVDM (NVIDIA Data Model) wire-format types used for communication between the kernel driver and GPU firmware processors. This includes typed MCTP transport headers, NVDM message headers, and NVDM message type identifiers. Both the FSP boot path and the upcoming GSP RPC message queue share this protocol layer. Signed-off-by: John Hubbard <jhubbard@nvidia.com> Reviewed-by: Eliot Courtney <ecourtney@nvidia.com> Link: https://patch.msgid.link/20260603-b4-blackwell-v13-3-d9f3a06939e0@nvidia.com Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
80 lines
1.9 KiB
Rust
80 lines
1.9 KiB
Rust
// SPDX-License-Identifier: GPL-2.0
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//! Nova Core GPU Driver
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use kernel::{
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debugfs,
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driver::Registration,
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pci,
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prelude::*,
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InPlaceModule, //
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};
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#[macro_use]
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mod bitfield;
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mod driver;
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mod falcon;
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mod fb;
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mod firmware;
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mod fsp;
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mod gpu;
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mod gsp;
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mod mctp;
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#[macro_use]
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mod num;
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mod regs;
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mod sbuffer;
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mod vbios;
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pub(crate) const MODULE_NAME: &core::ffi::CStr = <LocalModule as kernel::ModuleMetadata>::NAME;
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// TODO: Move this into per-module data once that exists.
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static mut DEBUGFS_ROOT: Option<debugfs::Dir> = None;
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/// Guard that clears `DEBUGFS_ROOT` when dropped.
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struct DebugfsRootGuard;
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impl Drop for DebugfsRootGuard {
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fn drop(&mut self) {
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// SAFETY: This guard is dropped after `_driver` (due to field order),
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// so the driver is unregistered and no probe() can be running.
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unsafe { DEBUGFS_ROOT = None };
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}
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}
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#[pin_data]
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struct NovaCoreModule {
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// Fields are dropped in declaration order, so `_driver` is dropped first,
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// then `_debugfs_guard` clears `DEBUGFS_ROOT`.
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#[pin]
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_driver: Registration<pci::Adapter<driver::NovaCoreDriver>>,
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_debugfs_guard: DebugfsRootGuard,
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}
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impl InPlaceModule for NovaCoreModule {
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fn init(module: &'static kernel::ThisModule) -> impl PinInit<Self, Error> {
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let dir = debugfs::Dir::new(kernel::c_str!("nova-core"));
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// SAFETY: We are the only driver code running during init, so there
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// cannot be any concurrent access to `DEBUGFS_ROOT`.
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unsafe { DEBUGFS_ROOT = Some(dir) };
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try_pin_init!(Self {
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_driver <- Registration::new(MODULE_NAME, module),
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_debugfs_guard: DebugfsRootGuard,
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})
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}
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}
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module! {
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type: NovaCoreModule,
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name: "nova-core",
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authors: ["Danilo Krummrich"],
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description: "Nova Core GPU driver",
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license: "GPL v2",
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firmware: [],
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}
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kernel::module_firmware!(firmware::ModInfoBuilder);
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