diff options
| author | Lorenzo Pieralisi <lpieralisi@kernel.org> | 2025-07-03 12:25:17 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2025-07-08 18:35:52 +0100 |
| commit | 8b65db1e93a227ad9cc1b67cb221b06869f0b35f (patch) | |
| tree | 14e1ce0e381290ecc37b1fd34b6dd9566bd5c6ba /include/linux | |
| parent | b4ead12d95002b9c65e3c646cf73e0a91c608024 (diff) | |
irqchip/msi-lib: Add IRQ_DOMAIN_FLAG_FWNODE_PARENT handling
In some irqchip implementations the fwnode representing the IRQdomain
and the MSI controller fwnode do not match; in particular the IRQdomain
fwnode is the MSI controller fwnode parent.
To support selecting such IRQ domains, add a flag in core IRQ domain
code that explicitly tells the MSI lib to use the parent fwnode while
carrying out IRQ domain selection.
Update the msi-lib select callback with the resulting logic.
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-v7-27-12e71f1b3528@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/irqdomain.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 7387d183029b..25c7cbeed393 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -212,6 +212,9 @@ enum { /* Address and data pair is mutable when irq_set_affinity() */ IRQ_DOMAIN_FLAG_MSI_IMMUTABLE = (1 << 11), + /* IRQ domain requires parent fwnode matching */ + IRQ_DOMAIN_FLAG_FWNODE_PARENT = (1 << 12), + /* * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved * for implementation specific purposes and ignored by the |