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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> | |
44e72c7e | 13 | #include <linux/device.h> |
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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); | |
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38 | int devm_irq_sim_init(struct device *dev, struct irq_sim *sim, |
39 | unsigned int num_irqs); | |
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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 */ |