| | 1 | /* |
| | 2 | * Copyright (c) 1993-1995, 1999-2008 Apple Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 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. |
| | 14 | * |
| | 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 |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 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. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | /* |
| | 29 | * Declarations for timer interrupt callouts. |
| | 30 | */ |
| | 31 | |
| | 32 | #ifndef _KERN_TIMER_CALL_H_ |
| | 33 | #define _KERN_TIMER_CALL_H_ |
| | 34 | |
| | 35 | #include <mach/mach_types.h> |
| | 36 | #include <kern/kern_types.h> |
| | 37 | |
| | 38 | #ifdef XNU_KERNEL_PRIVATE |
| | 39 | |
| | 40 | #include <kern/call_entry.h> |
| | 41 | #include <kern/simple_lock.h> |
| | 42 | |
| | 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 | |
| | 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 */ |
| | 61 | uint64_t ttd; /* Time to deadline at creation */ |
| | 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 |
| | 107 | #define TIMER_CALL_RATELIMITED TIMEOUT_URGENCY_RATELIMITED |
| | 108 | extern boolean_t timer_call_enter( |
| | 109 | timer_call_t call, |
| | 110 | uint64_t deadline, |
| | 111 | uint32_t flags); |
| | 112 | |
| | 113 | extern boolean_t timer_call_enter1( |
| | 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( |
| | 120 | timer_call_t call, |
| | 121 | timer_call_param_t param1, |
| | 122 | uint64_t deadline, |
| | 123 | uint64_t leeway, |
| | 124 | uint32_t flags, |
| | 125 | boolean_t ratelimited); |
| | 126 | |
| | 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 | |
| | 133 | extern boolean_t timer_call_cancel( |
| | 134 | timer_call_t call); |
| | 135 | |
| | 136 | extern boolean_t timer_call_quantum_timer_cancel( |
| | 137 | timer_call_t call); |
| | 138 | |
| | 139 | extern void timer_call_init(void); |
| | 140 | |
| | 141 | extern void timer_call_setup( |
| | 142 | timer_call_t call, |
| | 143 | timer_call_func_t func, |
| | 144 | timer_call_param_t param0); |
| | 145 | |
| | 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 | |
| | 175 | #endif /* XNU_KERNEL_PRIVATE */ |
| | 176 | |
| | 177 | #endif /* _KERN_TIMER_CALL_H_ */ |
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