genirq: Add new IPI irqdomain flags

These flags will be used to identify an IPI domain. We have two flavours of
IPI implementations:

IRQ_DOMAIN_FLAG_IPI_PER_CPU: Each CPU has its own virq and hwirq
IRQ_DOMAIN_FLAG_IPI_SINGLE : A single virq and hwirq for all CPUs

Signed-off-by: Qais Yousef <qais.yousef@imgtec.com>
Cc: <jason@lakedaemon.net>
Cc: <marc.zyngier@arm.com>
Cc: <jiang.liu@linux.intel.com>
Cc: <ralf@linux-mips.org>
Cc: <linux-mips@linux-mips.org>
Cc: <lisa.parratt@imgtec.com>
Cc: Qais Yousef <qsyousef@gmail.com>
Link: http://lkml.kernel.org/r/1449580830-23652-2-git-send-email-qais.yousef@imgtec.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 04579d9..9bb0a9c 100644 (file)
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -172,6 +172,12 @@ enum {
        /* Core calls alloc/free recursive through the domain hierarchy. */
        IRQ_DOMAIN_FLAG_AUTO_RECURSIVE  = (1 << 1),
 
+       /* Irq domain is an IPI domain with virq per cpu */
+       IRQ_DOMAIN_FLAG_IPI_PER_CPU     = (1 << 2),
+
+       /* Irq domain is an IPI domain with single virq */
+       IRQ_DOMAIN_FLAG_IPI_SINGLE      = (1 << 3),
+
        /*
         * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved
         * for implementation specific purposes and ignored by the
@@ -400,6 +406,22 @@ static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
 {
        return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY;
 }
+
+static inline bool irq_domain_is_ipi(struct irq_domain *domain)
+{
+       return domain->flags &
+               (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE);
+}
+
+static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
+{
+       return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU;
+}
+
+static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
+{
+       return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE;
+}
 #else  /* CONFIG_IRQ_DOMAIN_HIERARCHY */
 static inline void irq_domain_activate_irq(struct irq_data *data) { }
 static inline void irq_domain_deactivate_irq(struct irq_data *data) { }
@@ -413,6 +435,21 @@ static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
 {
        return false;
 }
+
+static inline bool irq_domain_is_ipi(struct irq_domain *domain)
+{
+       return false;
+}
+
+static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
+{
+       return false;
+}
+
+static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
+{
+       return false;
+}
 #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */
 
 #else /* CONFIG_IRQ_DOMAIN */