diff options
| author | Lorenzo Pieralisi <lpieralisi@kernel.org> | 2025-07-03 12:25:15 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2025-07-08 18:35:52 +0100 |
| commit | cd0ec59affb1f31347170bbafadb9c5cc716bca9 (patch) | |
| tree | 402448c61d6995a4071dd58f6e48cf029ade9c1c /include/linux/msi.h | |
| parent | 31fd3becb920e0b31b99cf202ace637f75dd7e78 (diff) | |
PCI/MSI: Add pci_msi_map_rid_ctlr_node() helper function
IRQchip drivers need a PCI/MSI function to map a RID to a MSI
controller deviceID namespace and at the same time retrieve the
struct device_node pointer of the MSI controller the RID is mapped
to.
Add pci_msi_map_rid_ctlr_node() to achieve this purpose.
Cc Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250703-gicv5-host-v7-25-12e71f1b3528@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'include/linux/msi.h')
| -rw-r--r-- | include/linux/msi.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index 6863540f4b71..a418e2695b05 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -705,6 +705,7 @@ struct irq_domain *pci_msi_create_irq_domain(struct fwnode_handle *fwnode, struct msi_domain_info *info, struct irq_domain *parent); u32 pci_msi_domain_get_msi_rid(struct irq_domain *domain, struct pci_dev *pdev); +u32 pci_msi_map_rid_ctlr_node(struct pci_dev *pdev, struct device_node **node); struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev); #else /* CONFIG_PCI_MSI */ static inline struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev) |