1 /*-
2 * Copyright (c) 2020 The FreeBSD Foundation
3 *
4 * This software was developed by Emmanuel Vadot under sponsorship
5 * from the FreeBSD Foundation.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31 #ifndef _LINUXKPI_LINUX_IRQ_WORK_H_
32 #define _LINUXKPI_LINUX_IRQ_WORK_H_
33
34 #include <sys/param.h>
35 #include <sys/taskqueue.h>
36
37 struct irq_work;
38 typedef void (*irq_work_func_t)(struct irq_work *);
39
40 struct irq_work {
41 struct task irq_task;
42 irq_work_func_t func;
43 };
44
45 extern struct taskqueue *linux_irq_work_tq;
46
47 #define DEFINE_IRQ_WORK(name, _func) struct irq_work name = { \
48 .irq_task = TASK_INITIALIZER(0, linux_irq_work_fn, &(name)), \
49 .func = (_func), \
50 }
51
52 void linux_irq_work_fn(void *, int);
53
54 static inline void
init_irq_work(struct irq_work * irqw,irq_work_func_t func)55 init_irq_work(struct irq_work *irqw, irq_work_func_t func)
56 {
57 TASK_INIT(&irqw->irq_task, 0, linux_irq_work_fn, irqw);
58 irqw->func = func;
59 }
60
61 static inline void
irq_work_queue(struct irq_work * irqw)62 irq_work_queue(struct irq_work *irqw)
63 {
64 taskqueue_enqueue(linux_irq_work_tq, &irqw->irq_task);
65 }
66
67 static inline void
irq_work_sync(struct irq_work * irqw)68 irq_work_sync(struct irq_work *irqw)
69 {
70 taskqueue_drain(linux_irq_work_tq, &irqw->irq_task);
71 }
72
73 #endif /* _LINUXKPI_LINUX_IRQ_WORK_H_ */
74