osfmk/kern/machine.h

   1 /*
   2  * Copyright (c) 2000-2008 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  * @OSF_COPYRIGHT@
  30  */
  31
  32 #ifndef _KERN_MACHINE_H_
  33 #define _KERN_MACHINE_H_
  34
  35 #include <mach/kern_return.h>
  36 #include <mach/processor_info.h>
  37 #include <kern/kern_types.h>
  38 #include <kern/thread_group.h>
  39
  40 #include <kern/work_interval.h>
  41
  42 #include <kern/sched_urgency.h>
  43
  44 /*
  45  * Machine support declarations.
  46  */
  47
  48 extern void processor_up(
  49         processor_t processor);
  50
  51 extern void processor_start_thread(void *machine_param,
  52     wait_result_t result);
  53
  54 /*
  55  * Must be implemented in machine dependent code.
  56  */
  57
  58 /* Initialize machine dependent ast code */
  59 extern void init_ast_check(
  60         processor_t         processor);
  61
  62 /* Cause check for ast */
  63 extern void cause_ast_check(
  64         processor_t         processor);
  65
  66 extern kern_return_t cpu_control(
  67         int                 slot_num,
  68         processor_info_t    info,
  69         unsigned int        count);
  70
  71 extern void     cpu_sleep(void);
  72
  73 extern kern_return_t cpu_start(
  74         int                 slot_num);
  75
  76 extern void cpu_exit_wait(
  77         int                 slot_num);
  78
  79 extern boolean_t cpu_can_exit(
  80         int                 slot_num);
  81
  82 extern kern_return_t cpu_info(
  83         processor_flavor_t  flavor,
  84         int                 slot_num,
  85         processor_info_t    info,
  86         unsigned int        *count);
  87
  88 extern kern_return_t cpu_info_count(
  89         processor_flavor_t  flavor,
  90         unsigned int        *count);
  91
  92 extern thread_t         machine_processor_shutdown(
  93         thread_t            thread,
  94         void                (*doshutdown)(processor_t),
  95         processor_t         processor);
  96
  97 extern void machine_idle(void);
  98
  99 extern void machine_track_platform_idle(boolean_t);
 100
 101 /* Signals a processor to bring it out of idle */
 102 extern void machine_signal_idle(
 103         processor_t         processor);
 104
 105 /* Signals a processor to bring it out of idle unless canceled */
 106 extern void machine_signal_idle_deferred(
 107         processor_t         processor);
 108
 109 /* Cancels an outstanding machine_signal_idle_deferred, if this is supported */
 110 extern void machine_signal_idle_cancel(
 111         processor_t         processor);
 112
 113 extern void halt_cpu(void);
 114
 115 extern void halt_all_cpus(
 116         boolean_t           reboot);
 117
 118 extern char *machine_boot_info(
 119         char                *buf,
 120         vm_size_t           buf_len);
 121
 122 /*
 123  * Machine-dependent routine to fill in an array with up to callstack_max
 124  * levels of return pc information.
 125  */
 126 extern void machine_callstack(
 127         uintptr_t           *buf,
 128         vm_size_t           callstack_max);
 129
 130 extern void consider_machine_collect(void);
 131
 132 /*
 133  * Machine-dependent routine to inform platform layer and external
 134  * CPU power management about context switches
 135  */
 136
 137 extern void     machine_thread_going_on_core(thread_t   new_thread,
 138     thread_urgency_t    urgency,
 139     uint64_t        sched_latency,
 140     uint64_t        same_pri_latency,
 141     uint64_t        dispatch_time);
 142
 143 extern void machine_thread_going_off_core(thread_t old_thread, boolean_t thread_terminating,
 144     uint64_t last_dispatch, boolean_t thread_runnable);
 145
 146 extern void machine_max_runnable_latency(uint64_t bg_max_latency,
 147     uint64_t default_max_latency,
 148     uint64_t realtime_max_latency);
 149
 150 extern void machine_work_interval_notify(thread_t thread, struct kern_work_interval_args* kwi_args);
 151
 152
 153 extern void machine_perfcontrol_deadline_passed(uint64_t deadline);
 154
 155 extern void machine_switch_perfcontrol_context(perfcontrol_event event,
 156     uint64_t timestamp,
 157     uint32_t flags,
 158     uint64_t new_thread_same_pri_latency,
 159     thread_t old,
 160     thread_t new);
 161
 162 extern void machine_switch_perfcontrol_state_update(perfcontrol_event event,
 163     uint64_t timestamp,
 164     uint32_t flags,
 165     thread_t thread);
 166
 167
 168 #endif  /* _KERN_MACHINE_H_ */