[apple/xnu.git] / osfmk / kern / timer_call.h

/*
 * Copyright (c) 1993-1995, 1999-2008 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * Declarations for timer interrupt callouts.
 */

#ifndef _KERN_TIMER_CALL_H_
#define _KERN_TIMER_CALL_H_

#include <mach/mach_types.h>
#include <kern/kern_types.h>

#ifdef XNU_KERNEL_PRIVATE

#include <kern/call_entry.h>
#include <kern/simple_lock.h>

#ifdef MACH_KERNEL_PRIVATE
#include <kern/queue.h>

extern boolean_t mach_timer_coalescing_enabled;
extern void timer_call_queue_init(mpqueue_head_t *);
#endif

/*
 * NOTE: for now, bsd/dev/dtrace/dtrace_glue.c has its own definition
 * of this data structure, and the two had better match.
 */
typedef struct timer_call {
	struct call_entry 	call_entry;
	decl_simple_lock_data( ,lock);		/* protects call_entry queue */
	uint64_t		soft_deadline;
	uint32_t		flags;
	boolean_t		async_dequeue;	/* this field is protected by
						   call_entry queue's lock */
	uint64_t		ttd; /* Time to deadline at creation */
} timer_call_data_t, *timer_call_t;

#define EndOfAllTime		0xFFFFFFFFFFFFFFFFULL

typedef void		*timer_call_param_t;
typedef void		(*timer_call_func_t)(
				timer_call_param_t	param0,
				timer_call_param_t	param1);

/*
 * Flags to alter the default timer/timeout coalescing behavior
 * on a per-timer_call basis.
 *
 * The SYS urgency classes indicate that the timer_call is not
 * directly related to the current thread at the time the timer_call
 * is entered, so it is ignored in the calculation entirely (only
 * the subclass specified is used).
 *
 * The USER flags indicate that both the current thread scheduling and QoS
 * attributes, in addition to the per-timer_call urgency specification,
 * are used to establish coalescing behavior.
 */
#define TIMER_CALL_SYS_NORMAL		TIMEOUT_URGENCY_SYS_NORMAL
#define TIMER_CALL_SYS_CRITICAL		TIMEOUT_URGENCY_SYS_CRITICAL
#define TIMER_CALL_SYS_BACKGROUND	TIMEOUT_URGENCY_SYS_BACKGROUND

#define TIMER_CALL_USER_MASK		TIMEOUT_URGENCY_USER_MASK
#define TIMER_CALL_USER_NORMAL		TIMEOUT_URGENCY_USER_NORMAL
#define TIMER_CALL_USER_CRITICAL	TIMEOUT_URGENCY_USER_CRITICAL
#define TIMER_CALL_USER_BACKGROUND	TIMEOUT_URGENCY_USER_BACKGROUND

#define TIMER_CALL_URGENCY_MASK		TIMEOUT_URGENCY_MASK

/*
 * Indicate that a specific leeway value is being provided (otherwise
 * the leeway parameter is ignored).  This supplied value can currently
 * only be used to extend the leeway calculated internally from the
 * urgency class provided.
 */
#define TIMER_CALL_LEEWAY		TIMEOUT_URGENCY_LEEWAY

/*
 * Non-migratable timer_call
 */
#define TIMER_CALL_LOCAL		TIMEOUT_URGENCY_FIRST_AVAIL
#define TIMER_CALL_RATELIMITED		TIMEOUT_URGENCY_RATELIMITED
extern boolean_t	timer_call_enter(
				timer_call_t	call,
				uint64_t	deadline,
				uint32_t	flags);

extern boolean_t	timer_call_enter1(
				timer_call_t		call,
				timer_call_param_t	param1,
				uint64_t		deadline,
				uint32_t 		flags);

extern boolean_t	timer_call_enter_with_leeway(
						timer_call_t		call,
						timer_call_param_t	param1,
						uint64_t		deadline,
						uint64_t		leeway,
						uint32_t 		flags,
						boolean_t		ratelimited);

extern boolean_t	timer_call_quantum_timer_enter(
						timer_call_t            call,
						timer_call_param_t      param1,
						uint64_t		deadline,
						uint64_t		ctime);

extern boolean_t	timer_call_cancel(
				timer_call_t	call);

extern boolean_t	timer_call_quantum_timer_cancel(
				timer_call_t	call);

extern void		timer_call_init(void);

extern void		timer_call_setup(
				timer_call_t		call,
				timer_call_func_t	func,
				timer_call_param_t	param0);

extern int timer_get_user_idle_level(void);
extern kern_return_t timer_set_user_idle_level(int ilevel);

#define NUM_LATENCY_QOS_TIERS (6)
typedef struct {
	uint32_t powergate_latency_abstime;

	uint32_t idle_entry_timer_processing_hdeadline_threshold_abstime;
	uint32_t interrupt_timer_coalescing_ilat_threshold_abstime;
	uint32_t timer_resort_threshold_abstime;

	int32_t timer_coalesce_rt_shift;
	int32_t timer_coalesce_bg_shift;
	int32_t timer_coalesce_kt_shift;
	int32_t timer_coalesce_fp_shift;
	int32_t timer_coalesce_ts_shift;

	uint64_t timer_coalesce_rt_abstime_max;
	uint64_t timer_coalesce_bg_abstime_max;
	uint64_t timer_coalesce_kt_abstime_max;
	uint64_t timer_coalesce_fp_abstime_max;
	uint64_t timer_coalesce_ts_abstime_max;

	uint32_t latency_qos_scale[NUM_LATENCY_QOS_TIERS];
	uint64_t latency_qos_abstime_max[NUM_LATENCY_QOS_TIERS];
	boolean_t latency_tier_rate_limited[NUM_LATENCY_QOS_TIERS];
} timer_coalescing_priority_params_t;
extern timer_coalescing_priority_params_t tcoal_prio_params;

#endif /* XNU_KERNEL_PRIVATE */

#endif /* _KERN_TIMER_CALL_H_ */
Commit	Line	Data
1c79356b	1	/*
c910b4d9	2	* Copyright (c) 1993-1995, 1999-2008 Apple Inc. All rights reserved.
1c79356b	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* Declarations for timer interrupt callouts.
1c79356b A	30	*/
	31
	32	#ifndef _KERN_TIMER_CALL_H_
	33	#define _KERN_TIMER_CALL_H_
	34
1c79356b	35	#include <mach/mach_types.h>
39236c6e	36	#include <kern/kern_types.h>
1c79356b	37
39236c6e	38	#ifdef XNU_KERNEL_PRIVATE
1c79356b	39
6d2010ae	40	#include <kern/call_entry.h>
fe8ab488	41	#include <kern/simple_lock.h>
6d2010ae	42
39236c6e A	43	#ifdef MACH_KERNEL_PRIVATE
	44	#include <kern/queue.h>
	45
	46	extern boolean_t mach_timer_coalescing_enabled;
	47	extern void timer_call_queue_init(mpqueue_head_t *);
	48	#endif
	49
6d2010ae A	50	/*
	51	* NOTE: for now, bsd/dev/dtrace/dtrace_glue.c has its own definition
	52	* of this data structure, and the two had better match.
	53	*/
	54	typedef struct timer_call {
	55	struct call_entry call_entry;
	56	decl_simple_lock_data( ,lock); /* protects call_entry queue */
	57	uint64_t soft_deadline;
	58	uint32_t flags;
	59	boolean_t async_dequeue; /* this field is protected by
	60	call_entry queue's lock */
4b17d6b6	61	uint64_t ttd; /* Time to deadline at creation */
39236c6e A	62	} timer_call_data_t, *timer_call_t;
	63
	64	#define EndOfAllTime 0xFFFFFFFFFFFFFFFFULL
	65
	66	typedef void *timer_call_param_t;
	67	typedef void (*timer_call_func_t)(
	68	timer_call_param_t param0,
	69	timer_call_param_t param1);
	70
	71	/*
	72	* Flags to alter the default timer/timeout coalescing behavior
	73	* on a per-timer_call basis.
	74	*
	75	* The SYS urgency classes indicate that the timer_call is not
	76	* directly related to the current thread at the time the timer_call
	77	* is entered, so it is ignored in the calculation entirely (only
	78	* the subclass specified is used).
	79	*
	80	* The USER flags indicate that both the current thread scheduling and QoS
	81	* attributes, in addition to the per-timer_call urgency specification,
	82	* are used to establish coalescing behavior.
	83	*/
	84	#define TIMER_CALL_SYS_NORMAL TIMEOUT_URGENCY_SYS_NORMAL
	85	#define TIMER_CALL_SYS_CRITICAL TIMEOUT_URGENCY_SYS_CRITICAL
	86	#define TIMER_CALL_SYS_BACKGROUND TIMEOUT_URGENCY_SYS_BACKGROUND
	87
	88	#define TIMER_CALL_USER_MASK TIMEOUT_URGENCY_USER_MASK
	89	#define TIMER_CALL_USER_NORMAL TIMEOUT_URGENCY_USER_NORMAL
	90	#define TIMER_CALL_USER_CRITICAL TIMEOUT_URGENCY_USER_CRITICAL
	91	#define TIMER_CALL_USER_BACKGROUND TIMEOUT_URGENCY_USER_BACKGROUND
	92
	93	#define TIMER_CALL_URGENCY_MASK TIMEOUT_URGENCY_MASK
	94
	95	/*
	96	* Indicate that a specific leeway value is being provided (otherwise
	97	* the leeway parameter is ignored). This supplied value can currently
	98	* only be used to extend the leeway calculated internally from the
	99	* urgency class provided.
	100	*/
	101	#define TIMER_CALL_LEEWAY TIMEOUT_URGENCY_LEEWAY
	102
	103	/*
	104	* Non-migratable timer_call
	105	*/
	106	#define TIMER_CALL_LOCAL TIMEOUT_URGENCY_FIRST_AVAIL
fe8ab488	107	#define TIMER_CALL_RATELIMITED TIMEOUT_URGENCY_RATELIMITED
c910b4d9	108	extern boolean_t timer_call_enter(
39236c6e A	109	timer_call_t call,
	110	uint64_t deadline,
	111	uint32_t flags);
1c79356b	112
c910b4d9	113	extern boolean_t timer_call_enter1(
39236c6e A	114	timer_call_t call,
	115	timer_call_param_t param1,
	116	uint64_t deadline,
	117	uint32_t flags);
	118
	119	extern boolean_t timer_call_enter_with_leeway(
c910b4d9 A	120	timer_call_t call,
c910b4d9 A	121	timer_call_param_t param1,
6d2010ae	122	uint64_t deadline,
39236c6e A	123	uint64_t leeway,
	124	uint32_t flags,
	125	boolean_t ratelimited);
1c79356b	126
5ba3f43e A	127	extern boolean_t timer_call_quantum_timer_enter(
	128	timer_call_t call,
	129	timer_call_param_t param1,
	130	uint64_t deadline,
	131	uint64_t ctime);
	132
c910b4d9	133	extern boolean_t timer_call_cancel(
39236c6e	134	timer_call_t call);
1c79356b	135
5ba3f43e A	136	extern boolean_t timer_call_quantum_timer_cancel(
	137	timer_call_t call);
	138
39236c6e	139	extern void timer_call_init(void);
6d2010ae	140
c910b4d9	141	extern void timer_call_setup(
39236c6e A	142	timer_call_t call,
	143	timer_call_func_t func,
	144	timer_call_param_t param0);
9bccf70c	145
fe8ab488 A	146	extern int timer_get_user_idle_level(void);
	147	extern kern_return_t timer_set_user_idle_level(int ilevel);
	148
	149	#define NUM_LATENCY_QOS_TIERS (6)
	150	typedef struct {
	151	uint32_t powergate_latency_abstime;
	152
	153	uint32_t idle_entry_timer_processing_hdeadline_threshold_abstime;
	154	uint32_t interrupt_timer_coalescing_ilat_threshold_abstime;
	155	uint32_t timer_resort_threshold_abstime;
	156
	157	int32_t timer_coalesce_rt_shift;
	158	int32_t timer_coalesce_bg_shift;
	159	int32_t timer_coalesce_kt_shift;
	160	int32_t timer_coalesce_fp_shift;
	161	int32_t timer_coalesce_ts_shift;
	162
	163	uint64_t timer_coalesce_rt_abstime_max;
	164	uint64_t timer_coalesce_bg_abstime_max;
	165	uint64_t timer_coalesce_kt_abstime_max;
	166	uint64_t timer_coalesce_fp_abstime_max;
	167	uint64_t timer_coalesce_ts_abstime_max;
	168
	169	uint32_t latency_qos_scale[NUM_LATENCY_QOS_TIERS];
	170	uint64_t latency_qos_abstime_max[NUM_LATENCY_QOS_TIERS];
	171	boolean_t latency_tier_rate_limited[NUM_LATENCY_QOS_TIERS];
	172	} timer_coalescing_priority_params_t;
	173	extern timer_coalescing_priority_params_t tcoal_prio_params;
	174
39236c6e	175	#endif /* XNU_KERNEL_PRIVATE */
1c79356b A	176
1c79356b A	177	#endif /* _KERN_TIMER_CALL_H_ */