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jcs's openbsd hax
openbsd
1/* Public domain. */
2
3#ifndef _LINUX_INTERRUPT_H
4#define _LINUX_INTERRUPT_H
5
6#include <sys/task.h>
7
8#include <machine/intr.h>
9#include <linux/hardirq.h>
10#include <linux/irqflags.h>
11#include <linux/atomic.h>
12#include <linux/irqreturn.h>
13
14struct seq_file;
15
16#define IRQF_SHARED 0x0001
17#define IRQF_ONESHOT 0x0002
18#define IRQF_NO_AUTOEN 0x0004
19
20#define IRQF_TRIGGER_RISING 0x1000
21#define IRQF_TRIGGER_FALLING 0x2000
22
23#define request_irq(irq, hdlr, flags, name, dev) (0)
24
25static inline void
26free_irq(unsigned int irq, void *dev)
27{
28}
29
30static inline void
31disable_irq(u_int irq)
32{
33}
34
35static inline void
36enable_irq(u_int irq)
37{
38}
39
40typedef irqreturn_t (*irq_handler_t)(int, void *);
41
42static inline int
43devm_request_threaded_irq(struct device *dev, u_int irq, irq_handler_t handler,
44 irq_handler_t thread_fn, u_int irqflags, const char *devname, void *arg)
45{
46 return 0;
47}
48
49struct tasklet_struct {
50 union {
51 void (*func)(unsigned long);
52 void (*callback)(struct tasklet_struct *);
53 };
54 bool use_callback;
55 unsigned long data;
56 unsigned long state;
57 atomic_t count;
58 struct task task;
59};
60
61#define TASKLET_STATE_SCHED 1
62#define TASKLET_STATE_RUN 0
63
64#define from_tasklet(x, t, f) \
65 container_of(t, typeof(*x), f)
66
67extern struct taskq *taskletq;
68void tasklet_run(void *);
69void tasklet_unlock_wait(struct tasklet_struct *);
70void tasklet_unlock_spin_wait(struct tasklet_struct *);
71
72static inline void
73tasklet_init(struct tasklet_struct *ts, void (*func)(unsigned long),
74 unsigned long data)
75{
76 ts->func = func;
77 ts->data = data;
78 ts->state = 0;
79 atomic_set(&ts->count, 0);
80 ts->use_callback = false;
81 task_set(&ts->task, tasklet_run, ts);
82}
83
84static inline void
85tasklet_setup(struct tasklet_struct *ts,
86 void (*callback)(struct tasklet_struct *))
87{
88 ts->callback = callback;
89 ts->data = 0;
90 ts->state = 0;
91 atomic_set(&ts->count, 0);
92 ts->use_callback = true;
93 task_set(&ts->task, tasklet_run, ts);
94}
95
96static inline int
97tasklet_trylock(struct tasklet_struct *ts)
98{
99 return !test_and_set_bit(TASKLET_STATE_RUN, &ts->state);
100}
101
102static inline void
103tasklet_unlock(struct tasklet_struct *ts)
104{
105 smp_mb__before_atomic();
106 clear_bit(TASKLET_STATE_RUN, &ts->state);
107}
108
109static inline void
110tasklet_kill(struct tasklet_struct *ts)
111{
112 clear_bit(TASKLET_STATE_SCHED, &ts->state);
113 task_del(taskletq, &ts->task);
114 tasklet_unlock_wait(ts);
115}
116
117static inline void
118tasklet_schedule(struct tasklet_struct *ts)
119{
120 set_bit(TASKLET_STATE_SCHED, &ts->state);
121 task_add(taskletq, &ts->task);
122}
123
124static inline void
125tasklet_hi_schedule(struct tasklet_struct *ts)
126{
127 set_bit(TASKLET_STATE_SCHED, &ts->state);
128 task_add(taskletq, &ts->task);
129}
130
131static inline void
132tasklet_disable_nosync(struct tasklet_struct *ts)
133{
134 atomic_inc(&ts->count);
135 smp_mb__after_atomic();
136}
137
138static inline void
139tasklet_enable(struct tasklet_struct *ts)
140{
141 smp_mb__before_atomic();
142 atomic_dec(&ts->count);
143}
144
145#endif