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[PATCH 1/6] irqdomain: add new IRQ_DOMAIN_FLAGS_IPI

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This flag will be used to identify an IPI domain.

The idea is to reuse the alloc functions to allocate an IPI if it's set.

We could alternatively add a separate new alloc_ipi() function to struct
domain_ops.

Signed-off-by: Qais Yousef <qais.yousef@imgtec.com>
---
 include/linux/irqdomain.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index d3ca79236fb0..9b3dc6c2a3cc 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -153,6 +153,9 @@ enum {
 	/* Core calls alloc/free recursive through the domain hierarchy. */
 	IRQ_DOMAIN_FLAG_AUTO_RECURSIVE	= (1 << 1),
 
+	/* Irq domain is an IPI domain */
+	IRQ_DOMAIN_FLAG_IPI		= (1 << 2),
+
 	/*
 	 * Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved
 	 * for implementation specific purposes and ignored by the
@@ -326,6 +329,11 @@ 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;
+}
 #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) { }
@@ -339,6 +347,11 @@ 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;
+}
 #endif	/* CONFIG_IRQ_DOMAIN_HIERARCHY */
 
 #else /* CONFIG_IRQ_DOMAIN */
-- 
2.1.0

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Thread

[PATCH 0/6] Implement generic IPI support mechanism Qais Yousef <qais.yousef@imgtec.com> - 2015-09-23 16:50 +0200
  [PATCH 1/6] irqdomain: add new IRQ_DOMAIN_FLAGS_IPI Qais Yousef <qais.yousef@imgtec.com> - 2015-09-23 16:50 +0200
  [PATCH 2/6] irqdomain: add a new send_ipi() to irq_domain_ops Qais Yousef <qais.yousef@imgtec.com> - 2015-09-23 16:50 +0200
    Re: [PATCH 2/6] irqdomain: add a new send_ipi() to irq_domain_ops Jiang Liu <jiang.liu@linux.intel.com> - 2015-09-23 18:50 +0200
      Re: [PATCH 2/6] irqdomain: add a new send_ipi() to irq_domain_ops Qais Yousef <qais.yousef@imgtec.com> - 2015-09-24 10:20 +0200
  [PATCH 5/6] irqchip: mips-gic: add a IPI hierarchy domain Qais Yousef <qais.yousef@imgtec.com> - 2015-09-23 17:00 +0200
  [PATCH 6/6] irqchip: mips-gic: use the new generic IPI API Qais Yousef <qais.yousef@imgtec.com> - 2015-09-23 17:00 +0200
  [PATCH 4/6] irq: add a new generic IPI handling code to irq core Qais Yousef <qais.yousef@imgtec.com> - 2015-09-23 17:00 +0200
    Re: [PATCH 4/6] irq: add a new generic IPI handling code to irq core Jiang Liu <jiang.liu@linux.intel.com> - 2015-09-23 19:00 +0200
      Re: [PATCH 4/6] irq: add a new generic IPI handling code to irq core Qais Yousef <qais.yousef@imgtec.com> - 2015-09-24 10:30 +0200
        Re: [PATCH 4/6] irq: add a new generic IPI handling code to irq  core Thomas Gleixner <tglx@linutronix.de> - 2015-09-29 18:20 +0200
  [PATCH 3/6] irqdomain: add struct irq_hwcfg and helper functions Qais Yousef <qais.yousef@imgtec.com> - 2015-09-23 17:00 +0200
  Re: [PATCH 0/6] Implement generic IPI support mechanism Jiang Liu <jiang.liu@linux.intel.com> - 2015-09-23 19:00 +0200
    Re: [PATCH 0/6] Implement generic IPI support mechanism Qais Yousef <qais.yousef@imgtec.com> - 2015-09-24 10:40 +0200
      Re: [PATCH 0/6] Implement generic IPI support mechanism Thomas Gleixner <tglx@linutronix.de> - 2015-09-29 22:50 +0200
        Re: [PATCH 0/6] Implement generic IPI support mechanism Qais Yousef <qais.yousef@imgtec.com> - 2015-09-30 15:40 +0200
          Re: [PATCH 0/6] Implement generic IPI support mechanism Thomas Gleixner <tglx@linutronix.de> - 2015-09-30 16:10 +0200
            Re: [PATCH 0/6] Implement generic IPI support mechanism Qais Yousef <qais.yousef@imgtec.com> - 2015-09-30 16:10 +0200

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