diff options
Diffstat (limited to 'rust/kernel')
| -rw-r--r-- | rust/kernel/pci/irq.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/rust/kernel/pci/irq.rs b/rust/kernel/pci/irq.rs index b6d1699ee3eb..6741046ec1c0 100644 --- a/rust/kernel/pci/irq.rs +++ b/rust/kernel/pci/irq.rs @@ -33,6 +33,16 @@ impl IrqType { IrqType::MsiX => bindings::PCI_IRQ_MSIX, } } + + /// Construct from raw value. + #[inline] + const fn from_raw(raw: u32) -> Self { + match raw { + bindings::PCI_IRQ_MSIX => IrqType::MsiX, + bindings::PCI_IRQ_MSI => IrqType::Msi, + _ => IrqType::Intx, + } + } } /// Set of IRQ types that can be used for PCI interrupt allocation. @@ -90,6 +100,12 @@ impl<'a> IrqVector<'a> { pub fn vectors(&self) -> &'a IrqVectorRegistration<'a> { self.reg } + + /// Returns the interrupt type the PCI core selected for this vector's allocation. + #[inline] + pub fn irq_type(&self) -> IrqType { + self.reg.irq_type() + } } impl<'a> From<IrqVector<'a>> for IrqRequest<'a> { @@ -122,6 +138,13 @@ impl<'a> IrqVectorRegistration<'a> { self.len.get() } + /// Returns the interrupt type the PCI core selected for this allocation. + #[inline] + pub fn irq_type(&self) -> IrqType { + // SAFETY: `self.dev.as_raw()` is a valid pointer to a `struct pci_dev`. + IrqType::from_raw(unsafe { bindings::pci_irq_type(self.dev.as_raw()) }) + } + /// Returns the [`IrqVector`] at `index`. /// /// Returns [`EINVAL`] if the `index` is out of bounds for the length reported by |