osfmk/i386/pmCPU.h

   1 /*
   2  * Copyright (c) 2006-2009 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 #ifdef KERNEL_PRIVATE
  29 #ifndef _I386_PMCPU_H_
  30 #define _I386_PMCPU_H_
  31
  32 #include <i386/cpu_topology.h>
  33
  34 #ifndef ASSEMBLER
  35
  36 /*
  37  * This value should be changed each time that pmDsipatch_t or pmCallBacks_t
  38  * changes.
  39  */
  40 #define PM_DISPATCH_VERSION     17
  41
  42 /*
  43  * Dispatch table for functions that get installed when the power
  44  * management KEXT loads.
  45  *
  46  * pmDispatch_t is the set of functions that the kernel can use to call
  47  * into the power management KEXT.
  48  *
  49  * pmCallBacks_t is the set of functions that the power management kext
  50  * can call to get at specific kernel functions.
  51  */
  52 typedef struct
  53 {
  54     int                 (*pmCPUStateInit)(void);
  55     void                (*cstateInit)(void);
  56     uint64_t            (*cstateMachineIdle)(uint64_t maxIdleDuration);
  57     uint64_t            (*GetDeadline)(x86_lcpu_t *lcpu);
  58     uint64_t            (*SetDeadline)(x86_lcpu_t *lcpu, uint64_t);
  59     void                (*Deadline)(x86_lcpu_t *lcpu);
  60     boolean_t           (*exitIdle)(x86_lcpu_t *lcpu);
  61     void                (*markCPURunning)(x86_lcpu_t *lcpu);
  62     int                 (*pmCPUControl)(uint32_t cmd, void *datap);
  63     void                (*pmCPUHalt)(void);
  64     uint64_t            (*getMaxSnoop)(void);
  65     void                (*setMaxBusDelay)(uint64_t time);
  66     uint64_t            (*getMaxBusDelay)(void);
  67     void                (*setMaxIntDelay)(uint64_t time);
  68     uint64_t            (*getMaxIntDelay)(void);
  69     void                (*pmCPUSafeMode)(x86_lcpu_t *lcpu, uint32_t flags);
  70     void                (*pmTimerStateSave)(void);
  71     void                (*pmTimerStateRestore)(void);
  72     kern_return_t       (*exitHalt)(x86_lcpu_t *lcpu);
  73     kern_return_t       (*exitHaltToOff)(x86_lcpu_t *lcpu);
  74     void                (*markAllCPUsOff)(void);
  75     void                (*pmSetRunCount)(uint32_t count);
  76     boolean_t           (*pmIsCPUUnAvailable)(x86_lcpu_t *lcpu);
  77     int                 (*pmIPIHandler)(void *state);
  78 } pmDispatch_t;
  79
  80
  81 typedef struct {
  82     int                 (*setRTCPop)(uint64_t time);
  83     void                (*resyncDeadlines)(int cpu);
  84     void                (*initComplete)(void);
  85     x86_lcpu_t          *(*GetLCPU)(int cpu);
  86     x86_core_t          *(*GetCore)(int cpu);
  87     x86_die_t           *(*GetDie)(int cpu);
  88     x86_pkg_t           *(*GetPackage)(int cpu);
  89     x86_lcpu_t          *(*GetMyLCPU)(void);
  90     x86_core_t          *(*GetMyCore)(void);
  91     x86_die_t           *(*GetMyDie)(void);
  92     x86_pkg_t           *(*GetMyPackage)(void);
  93     x86_pkg_t           *(*GetPkgRoot)(void);
  94     void                (*LockCPUTopology)(int lock);
  95     boolean_t           (*GetHibernate)(int cpu);
  96     processor_t         (*LCPUtoProcessor)(int lcpu);
  97     processor_t         (*ThreadBind)(processor_t proc);
  98     uint32_t            (*GetSavedRunCount)(void);
  99     void                (*pmSendIPI)(int cpu);
 100     x86_topology_parameters_t   *topoParms;
 101 } pmCallBacks_t;
 102
 103 extern pmDispatch_t     *pmDispatch;
 104
 105 void power_management_init(void);
 106 void pmKextRegister(uint32_t version, pmDispatch_t *cpuFuncs,
 107                     pmCallBacks_t *callbacks);
 108 void pmUnRegister(pmDispatch_t *cpuFuncs);
 109 void pmCPUStateInit(void);
 110 uint64_t pmCPUGetDeadline(struct cpu_data *cpu);
 111 uint64_t pmCPUSetDeadline(struct cpu_data *cpu, uint64_t deadline);
 112 void pmCPUDeadline(struct cpu_data *cpu);
 113 boolean_t pmCPUExitIdle(struct cpu_data *cpu);
 114 void pmCPUMarkRunning(struct cpu_data *cpu);
 115 void pmMarkAllCPUsOff(void);
 116 int pmCPUControl(uint32_t cmd, void *datap);
 117 void pmCPUHalt(uint32_t reason);
 118 void pmTimerSave(void);
 119 void pmTimerRestore(void);
 120 kern_return_t pmCPUExitHalt(int cpu);
 121 kern_return_t pmCPUExitHaltToOff(int cpu);
 122
 123 #define PM_HALT_NORMAL          0               /* normal halt path */
 124 #define PM_HALT_DEBUG           1               /* debug code wants to halt */
 125 #define PM_HALT_PANIC           2               /* panic code wants to halt */
 126 #define PM_HALT_SLEEP           3               /* sleep code wants to halt */
 127
 128 void pmSafeMode(x86_lcpu_t *lcpu, uint32_t flags);
 129
 130 #define PM_SAFE_FL_NORMAL       0x00000001      /* put CPU into "normal" power mode */
 131 #define PM_SAFE_FL_SAFE         0x00000002      /* put CPU into a "safe" power mode */
 132 #define PM_SAFE_FL_PAUSE        0x00000010      /* pause execution on the CPU */
 133 #define PM_SAFE_FL_RESUME       0x00000020      /* resume execution on the CPU */
 134
 135 extern int pmsafe_debug;
 136 extern int idlehalt;
 137
 138 /******************************************************************************
 139  *
 140  * All of the following are deprecated interfaces and no longer used.
 141  *
 142  ******************************************************************************/
 143
 144
 145 #endif /* ASSEMBLER */
 146
 147 #endif /* _I386_PMCPU_H_ */
 148 #endif /* KERNEL_PRIVATE */