1 // SPDX-License-Identifier: GPL-2.0 2 // SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved. 3 4 //! GPU interrupt support. 5 //! 6 //! GIN, the GPU Interrupt and Notification unit, is the GPU's interrupt controller. It latches 7 //! every interrupt source in a two-level register tree and delivers the tree to the CPU as a 8 //! message-signaled PCI interrupt. 9 //! 10 //! See `Documentation/gpu/nova/core/interrupts.rst`. 11 12 #[cfg(CONFIG_NOVA_CORE_SELFTESTS)] 13 pub(crate) mod doorbell_test; 14 mod hal; 15 pub(crate) mod interrupt_tree; 16 mod regs; 17 18 /// The message-signaled interrupt type that Linux granted. 19 /// 20 /// nova-core never requests INTx, so this has no variant for it, unlike [`kernel::pci::IrqType`]. 21 #[derive(Clone, Copy, Debug, Eq, PartialEq)] 22 enum MsiType { 23 /// A single message, which every subtree raises. 24 Msi, 25 26 /// One table entry per subtree. 27 MsiX, 28 } 29