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/* Public domain. */
#ifndef _LINUX_INTERRUPT_H
#define _LINUX_INTERRUPT_H
#include <sys/task.h>
#include <machine/intr.h>
#include <linux/hardirq.h>
#include <linux/irqflags.h>
#include <linux/atomic.h>
#include <linux/compiler.h>
#include <linux/irqreturn.h>
#define IRQF_SHARED 0
#define request_irq(irq, hdlr, flags, name, dev) (0)
#define free_irq(irq, dev)
typedef irqreturn_t (*irq_handler_t)(int, void *);
struct tasklet_struct {
void (*func)(unsigned long);
unsigned long data;
unsigned long state;
atomic_t count;
struct task task;
};
#define TASKLET_STATE_SCHED 1
#define TASKLET_STATE_RUN 0
extern struct taskq *taskletq;
void tasklet_run(void *);
static inline void
tasklet_init(struct tasklet_struct *ts, void (*func)(unsigned long),
unsigned long data)
{
ts->func = func;
ts->data = data;
ts->state = 0;
atomic_set(&ts->count, 0);
task_set(&ts->task, tasklet_run, ts);
}
static inline int
tasklet_trylock(struct tasklet_struct *ts)
{
return !test_and_set_bit(TASKLET_STATE_RUN, &ts->state);
}
static inline void
tasklet_unlock(struct tasklet_struct *ts)
{
smp_mb__before_atomic();
clear_bit(TASKLET_STATE_RUN, &ts->state);
}
static inline void
tasklet_unlock_wait(struct tasklet_struct *ts)
{
while (test_bit(TASKLET_STATE_RUN, &ts->state))
barrier();
}
static inline void
tasklet_kill(struct tasklet_struct *ts)
{
clear_bit(TASKLET_STATE_SCHED, &ts->state);
task_del(taskletq, &ts->task);
tasklet_unlock_wait(ts);
}
static inline void
tasklet_schedule(struct tasklet_struct *ts)
{
set_bit(TASKLET_STATE_SCHED, &ts->state);
task_add(taskletq, &ts->task);
}
static inline void
tasklet_hi_schedule(struct tasklet_struct *ts)
{
set_bit(TASKLET_STATE_SCHED, &ts->state);
task_add(taskletq, &ts->task);
}
static inline void
tasklet_disable_nosync(struct tasklet_struct *ts)
{
atomic_inc(&ts->count);
smp_mb__after_atomic();
}
static inline void
tasklet_enable(struct tasklet_struct *ts)
{
smp_mb__before_atomic();
atomic_dec(&ts->count);
}
#endif
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