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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright (c) 2013, Joyent, Inc. All rights reserved.
*/
#ifndef _SYS_DDI_PERIODIC_H
#define _SYS_DDI_PERIODIC_H
#include <sys/list.h>
#include <sys/taskq_impl.h>
#include <sys/cyclic.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _KERNEL
/*
* Opaque handle type for i_timeout() and i_untimeout().
*/
typedef struct __timeout *timeout_t;
typedef enum ddi_periodic_flags {
DPF_DISPATCHED = 0x01,
DPF_EXECUTING = 0x02,
DPF_CANCELLED = 0x04
} ddi_periodic_flags_t;
/*
* Each instance of this structure represents a single periodic handler
* registered through ddi_periodic_add(9F).
*/
typedef struct ddi_periodic_impl {
struct list_node dpr_link; /* protected by periodics_lock */
struct list_node dpr_softint_link; /* only used when DPF_DISPATCHED */
id_t dpr_id;
hrtime_t dpr_interval;
kmutex_t dpr_lock;
kcondvar_t dpr_cv;
ddi_periodic_flags_t dpr_flags;
uint_t dpr_level; /* 0 <= dpr_level <= 10 */
taskq_ent_t dpr_taskq_ent; /* only used for level of 0 */
uint64_t dpr_fire_count;
kthread_t *dpr_thread;
cyclic_id_t dpr_cyclic_id;
void (*dpr_handler)(void *);
void *dpr_arg;
} ddi_periodic_impl_t;
/*
* Internal implementation functions for the DDI periodic interface.
*/
void ddi_periodic_init(void);
void ddi_periodic_fini(void);
void ddi_periodic_softintr(int level);
timeout_t i_timeout(void (*)(void *), void *, hrtime_t, int);
void i_untimeout(timeout_t);
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_DDI_PERIODIC_H */
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