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 unsigned int irq_get_nr_irqs(void) __pure;
9 unsigned int irq_set_nr_irqs(unsigned int nr);
10 extern struct irq_desc *irq_to_desc(unsigned int irq);
11 unsigned int irq_get_next_irq(unsigned int offset);
12 
13 #define for_each_irq_desc(irq, desc)                                      \
14 	for (unsigned int __nr_irqs__ = irq_get_nr_irqs(); __nr_irqs__;   \
15 	     __nr_irqs__ = 0)                                             \
16 		for (irq = 0, desc = irq_to_desc(irq); irq < __nr_irqs__; \
17 		     irq++, desc = irq_to_desc(irq))                      \
18 			if (!desc)                                        \
19 				;                                         \
20 			else
21 
22 # define for_each_irq_desc_reverse(irq, desc)				\
23 	for (irq = irq_get_nr_irqs() - 1, desc = irq_to_desc(irq);	\
24 	     irq >= 0; irq--, desc = irq_to_desc(irq))			\
25 		if (!desc)						\
26 			;						\
27 		else
28 
29 #define for_each_active_irq(irq)                                        \
30 	for (unsigned int __nr_irqs__ = irq_get_nr_irqs(); __nr_irqs__; \
31 	     __nr_irqs__ = 0)                                           \
32 		for (irq = irq_get_next_irq(0); irq < __nr_irqs__;      \
33 		     irq = irq_get_next_irq(irq + 1))
34 
35 #define for_each_irq_nr(irq)                                            \
36 	for (unsigned int __nr_irqs__ = irq_get_nr_irqs(); __nr_irqs__; \
37 	     __nr_irqs__ = 0)                                           \
38 		for (irq = 0; irq < __nr_irqs__; irq++)
39 
40 #endif
41