include/linux/irqnr.h

   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