58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
#ifndef _LINUX_IRQNR_H
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#define _LINUX_IRQNR_H
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/*
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* Generic irq_desc iterators:
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*/
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#ifdef __KERNEL__
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#ifndef CONFIG_GENERIC_HARDIRQS
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#include <asm/irq.h>
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/*
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* Wrappers for non-genirq architectures:
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*/
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#define nr_irqs NR_IRQS
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#define irq_to_desc(irq) (&irq_desc[irq])
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# define for_each_irq_desc(irq, desc) \
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for (irq = 0; irq < nr_irqs; irq++)
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# define for_each_irq_desc_reverse(irq, desc) \
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for (irq = nr_irqs - 1; irq >= 0; irq--)
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#else /* CONFIG_GENERIC_HARDIRQS */
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extern int nr_irqs;
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extern struct irq_desc *irq_to_desc(unsigned int irq);
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# define for_each_irq_desc(irq, desc) \
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for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs; \
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irq++, desc = irq_to_desc(irq)) \
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if (!desc) \
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; \
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else
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# define for_each_irq_desc_reverse(irq, desc) \
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for (irq = nr_irqs - 1, desc = irq_to_desc(irq); irq >= 0; \
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irq--, desc = irq_to_desc(irq)) \
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if (!desc) \
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; \
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else
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#ifdef CONFIG_SMP
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#define irq_node(irq) (irq_to_desc(irq)->node)
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#else
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#define irq_node(irq) 0
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#endif
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#endif /* CONFIG_GENERIC_HARDIRQS */
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#define for_each_irq_nr(irq) \
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for (irq = 0; irq < nr_irqs; irq++)
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#endif /* __KERNEL__ */
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#endif
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