[patch 05/20] genirq/irqdomain: Provide IRQ_DOMAIN_FLAG_MSI_DEVICE

Thomas Gleixner
2022-11-11T14:01:14Z

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>
---
include/linux/irqdomain.h | 13 +++++++++++++
1 file changed, 13 insertions(+)

--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -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_par
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)
@@ -609,6 +617,11 @@ static inline bool irq_domain_is_msi_par
{
return false;
}
+
+static inline bool irq_domain_is_msi_device(struct irq_domain *domain)
+{
+ return false;
+}

#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */