include/linux/irq_sim.h

   1 #ifndef _LINUX_IRQ_SIM_H
   2 #define _LINUX_IRQ_SIM_H
   3 /*
   4  * Copyright (C) 2017 Bartosz Golaszewski <brgl@bgdev.pl>
   5  *
   6  * This program is free software; you can redistribute  it and/or modify it
   7  * under  the terms of  the GNU General  Public License as published by the
   8  * Free Software Foundation;  either version 2 of the  License, or (at your
   9  * option) any later version.
  10  */
  11
  12 #include <linux/irq_work.h>
  13 #include <linux/device.h>
  14
  15 /*
  16  * Provides a framework for allocating simulated interrupts which can be
  17  * requested like normal irqs and enqueued from process context.
  18  */
  19
  20 struct irq_sim_work_ctx {
  21         struct irq_work         work;
  22         int                     irq;
  23 };
  24
  25 struct irq_sim_irq_ctx {
  26         int                     irqnum;
  27         bool                    enabled;
  28 };
  29
  30 struct irq_sim {
  31         struct irq_sim_work_ctx work_ctx;
  32         int                     irq_base;
  33         unsigned int            irq_count;
  34         struct irq_sim_irq_ctx  *irqs;
  35 };
  36
  37 int irq_sim_init(struct irq_sim *sim, unsigned int num_irqs);
  38 int devm_irq_sim_init(struct device *dev, struct irq_sim *sim,
  39                       unsigned int num_irqs);
  40 void irq_sim_fini(struct irq_sim *sim);
  41 void irq_sim_fire(struct irq_sim *sim, unsigned int offset);
  42 int irq_sim_irqnum(struct irq_sim *sim, unsigned int offset);
  43
  44 #endif /* _LINUX_IRQ_SIM_H */