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genirq/irqdomain: Provide IRQ_DOMAIN_FLAG_MSI_DEVICE

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Similar to marking parent MSI domains it's required to identify per device
domains. Add flag and helpers.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221124230313.747627287@linutronix.de
This commit is contained in:
Thomas Gleixner 2022-11-25 00:24:17 +01:00
parent b749e6d31c
commit e71c5d0bb1
1 changed files with 13 additions and 0 deletions
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13
include/linux/irqdomain.h
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@ -192,6 +192,9 @@ enum {
/* Irq domain is a MSI parent domain */
IRQ_DOMAIN_FLAG_MSI_PARENT = (1 << 8),
/* Irq domain is a MSI device domain */
IRQ_DOMAIN_FLAG_MSI_DEVICE = (1 << 9),
/*
* Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved
* for implementation specific purposes and ignored by the
@ -559,6 +562,11 @@ static inline bool irq_domain_is_msi_parent(struct irq_domain *domain)
return domain->flags & IRQ_DOMAIN_FLAG_MSI_PARENT;
}
static inline bool irq_domain_is_msi_device(struct irq_domain *domain)
{
return domain->flags & IRQ_DOMAIN_FLAG_MSI_DEVICE;
}
#else /* CONFIG_IRQ_DOMAIN_HIERARCHY */
static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
unsigned int nr_irqs, int node, void *arg)
@ -610,6 +618,11 @@ static inline bool irq_domain_is_msi_parent(struct irq_domain *domain)
return false;
}
static inline bool irq_domain_is_msi_device(struct irq_domain *domain)
{
return false;
}
#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */
#else /* CONFIG_IRQ_DOMAIN */