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-rw-r--r--include/linux/irqnr.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h
new file mode 100644
index 00000000..3bc4dcab
--- /dev/null
+++ b/include/linux/irqnr.h
@@ -0,0 +1,62 @@
+#ifndef _LINUX_IRQNR_H
+#define _LINUX_IRQNR_H
+
+/*
+ * Generic irq_desc iterators:
+ */
+#ifdef __KERNEL__
+
+#ifndef CONFIG_GENERIC_HARDIRQS
+#include <asm/irq.h>
+
+/*
+ * Wrappers for non-genirq architectures:
+ */
+#define nr_irqs NR_IRQS
+#define irq_to_desc(irq) (&irq_desc[irq])
+
+# define for_each_irq_desc(irq, desc) \
+ for (irq = 0; irq < nr_irqs; irq++)
+
+# define for_each_irq_desc_reverse(irq, desc) \
+ for (irq = nr_irqs - 1; irq >= 0; irq--)
+
+#else /* CONFIG_GENERIC_HARDIRQS */
+
+extern int nr_irqs;
+extern struct irq_desc *irq_to_desc(unsigned int irq);
+unsigned int irq_get_next_irq(unsigned int offset);
+
+# define for_each_irq_desc(irq, desc) \
+ for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs; \
+ irq++, desc = irq_to_desc(irq)) \
+ if (!desc) \
+ ; \
+ else
+
+
+# define for_each_irq_desc_reverse(irq, desc) \
+ for (irq = nr_irqs - 1, desc = irq_to_desc(irq); irq >= 0; \
+ irq--, desc = irq_to_desc(irq)) \
+ if (!desc) \
+ ; \
+ else
+
+#ifdef CONFIG_SMP
+#define irq_node(irq) (irq_get_irq_data(irq)->node)
+#else
+#define irq_node(irq) 0
+#endif
+
+# define for_each_active_irq(irq) \
+ for (irq = irq_get_next_irq(0); irq < nr_irqs; \
+ irq = irq_get_next_irq(irq + 1))
+
+#endif /* CONFIG_GENERIC_HARDIRQS */
+
+#define for_each_irq_nr(irq) \
+ for (irq = 0; irq < nr_irqs; irq++)
+
+#endif /* __KERNEL__ */
+
+#endif