1 #ifndef _LINUX_IRQNR_H 2 #define _LINUX_IRQNR_H 3 4 /* 5 * Generic irq_desc iterators: 6 */ 7 #ifdef __KERNEL__ 8 9 #ifndef CONFIG_GENERIC_HARDIRQS 10 #include <asm/irq.h> 11 12 /* 13 * Wrappers for non-genirq architectures: 14 */ 15 #define nr_irqs NR_IRQS 16 #define irq_to_desc(irq) (&irq_desc[irq]) 17 18 # define for_each_irq_desc(irq, desc) \ 19 for (irq = 0; irq < nr_irqs; irq++) 20 21 # define for_each_irq_desc_reverse(irq, desc) \ 22 for (irq = nr_irqs - 1; irq >= 0; irq--) 23 24 #else /* CONFIG_GENERIC_HARDIRQS */ 25 26 extern int nr_irqs; 27 extern struct irq_desc *irq_to_desc(unsigned int irq); 28 29 # define for_each_irq_desc(irq, desc) \ 30 for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs; \ 31 irq++, desc = irq_to_desc(irq)) \ 32 if (!desc) \ 33 ; \ 34 else 35 36 37 # define for_each_irq_desc_reverse(irq, desc) \ 38 for (irq = nr_irqs - 1, desc = irq_to_desc(irq); irq >= 0; \ 39 irq--, desc = irq_to_desc(irq)) \ 40 if (!desc) \ 41 ; \ 42 else 43 44 #ifdef CONFIG_SMP 45 #define irq_node(irq) (irq_to_desc(irq)->node) 46 #else 47 #define irq_node(irq) 0 48 #endif 49 50 #endif /* CONFIG_GENERIC_HARDIRQS */ 51 52 #define for_each_irq_nr(irq) \ 53 for (irq = 0; irq < nr_irqs; irq++) 54 55 #endif /* __KERNEL__ */ 56 57 #endif 58