PCI/MSI: Make the pci_msi_map_rid_ctlr_node() interface firmware agnostic

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To support booting with OF and ACPI seamlessly, GIC ITS parent code
requires the PCI/MSI irqdomain layer to implement a function to retrieve
an MSI controller fwnode and map an RID in a firmware agnostic way
(ie pci_msi_map_rid_ctlr_node()).

Convert pci_msi_map_rid_ctlr_node() to an OF agnostic interface
(fwnode_handle based) and update the GIC ITS MSI parent code to reflect
the pci_msi_map_rid_ctlr_node() change.

Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260115-gicv5-host-acpi-v3-2-c13a9a150388@kernel.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Lorenzo Pieralisi 2026-01-15 10:50:48 +01:00 • committed by Rafael J. Wysocki

parent 0323897a88

commit a08df2fbba

3 changed files with 22 additions and 10 deletions

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8

drivers/irqchip/irq-gic-its-msi-parent.c

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21

drivers/pci/msi/irqdomain.c

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3

include/linux/msi.h

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