[tip: irq/core] genirq/irqdomain: Provide IRQ_DOMAIN_FLAG_MSI_DEVICE

[tip-bot2 for Thomas Gleixner]

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     e71c5d0bb1885b73c746b634895b85d135ce2c87
Gitweb:        https://git.kernel.org/tip/e71c5d0bb1885b73c746b634895b85d135ce2c87
Author:        Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate:    Fri, 25 Nov 2022 00:24:17 +01:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Mon, 05 Dec 2022 19:20:58 +01:00

genirq/irqdomain: Provide IRQ_DOMAIN_FLAG_MSI_DEVICE

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

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
Acked-by: Marc Zyngier <maz@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221124230313.747627287@xxxxxxxxxxxxx

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

diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index f837db9..24b7668 100644
--- 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_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 */