1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_IRQNR_H
3 #define _LINUX_IRQNR_H
4 
5 #include <uapi/linux/irqnr.h>
6 
7 
8 extern int nr_irqs;
9 extern struct irq_desc *irq_to_desc(unsigned int irq);
10 unsigned int irq_get_next_irq(unsigned int offset);
11 
12 # define for_each_irq_desc(irq, desc)					\
13 	for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs;		\
14 	     irq++, desc = irq_to_desc(irq))				\
15 		if (!desc)						\
16 			;						\
17 		else
18 
19 
20 # define for_each_irq_desc_reverse(irq, desc)				\
21 	for (irq = nr_irqs - 1, desc = irq_to_desc(irq); irq >= 0;	\
22 	     irq--, desc = irq_to_desc(irq))				\
23 		if (!desc)						\
24 			;						\
25 		else
26 
27 # define for_each_active_irq(irq)			\
28 	for (irq = irq_get_next_irq(0); irq < nr_irqs;	\
29 	     irq = irq_get_next_irq(irq + 1))
30 
31 #define for_each_irq_nr(irq)                   \
32        for (irq = 0; irq < nr_irqs; irq++)
33 
34 #endif
35