usr/src/uts/i86pc/sys/cpudrv_mach.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_CPUDRV_MACH_H
  27 #define _SYS_CPUDRV_MACH_H
  28
  29 #include <sys/cpuvar.h>
  30 #include <sys/cpupm.h>
  31 #include <sys/cpu_acpi.h>
  32 #include <sys/cpudrv.h>
  33 #include <sys/ksynch.h>
  34
  35 #ifdef  __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 /*
  40  * We currently refuse to power manage if the CPU in not ready to
  41  * take cross calls (cross calls fail silently if CPU is not ready
  42  * for it).
  43  */
  44 extern cpuset_t cpu_ready_set;
  45 #define CPUDRV_XCALL_IS_READY(cpuid) CPU_IN_SET(cpu_ready_set, (cpuid))
  46
  47 /*
  48  * We're about to exit the _PPC thread so reset tag.
  49  */
  50 #define CPUDRV_RESET_GOVERNOR_THREAD(cpupm) { \
  51         if (curthread == cpupm->pm_governor_thread) \
  52                 cpupm->pm_governor_thread = NULL; \
  53 }
  54
  55 /*
  56  * The current top speed as defined by the _PPC.
  57  */
  58 #define CPUDRV_TOPSPEED(cpupm)  (cpupm)->top_spd
  59
  60 /*
  61  * Install a _PPC/_TPC change notification handler.
  62  */
  63 #define CPUDRV_INSTALL_MAX_CHANGE_HANDLER(cpudsp) \
  64         cpudrv_install_notify_handler(cpudsp);
  65
  66 /*
  67  * Uninstall _PPC/_TPC change notification handler.
  68  */
  69 #define CPUDRV_UNINSTALL_MAX_CHANGE_HANDLER(cpudsp) \
  70         cpudrv_uninstall_notify_handler(cpudsp);
  71
  72 /*
  73  * Redefine the topspeed.
  74  */
  75 #define CPUDRV_REDEFINE_TOPSPEED(dip) cpudrv_redefine_topspeed(dip)
  76
  77 /*
  78  * Set callbacks so that PPM can callback into CPUDRV
  79  */
  80 #define CPUDRV_SET_PPM_CALLBACKS() { \
  81         cpupm_get_topspeed_callb = cpudrv_get_topspeed; \
  82         cpupm_set_topspeed_callb = cpudrv_set_topspeed; \
  83 }
  84
  85 /*
  86  * ACPI provides the supported speeds.
  87  */
  88 #define CPUDRV_GET_SPEEDS(cpudsp, speeds, nspeeds) \
  89         nspeeds = cpudrv_get_speeds(cpudsp, &speeds);
  90 #define CPUDRV_FREE_SPEEDS(speeds, nspeeds) \
  91         cpudrv_free_speeds(speeds, nspeeds);
  92
  93 /*
  94  * ACPI provides the supported C-states.
  95  */
  96 #define CPUDRV_GET_MAX_CSTATES(handle) \
  97         cpu_acpi_get_max_cstates(handle);
  98
  99 /*
 100  * Compute the idle cnt percentage for a given speed.
 101  */
 102 #define CPUDRV_IDLE_CNT_PERCENT(hwm, speeds, i) \
 103         (100 - (((100 - hwm) * speeds[0]) / speeds[i]))
 104
 105 /*
 106  * Compute the user cnt percentage for a given speed.
 107  */
 108 #define CPUDRV_USER_CNT_PERCENT(hwm, speeds, i) \
 109         ((hwm * speeds[i]) / speeds[i - 1]);
 110
 111 /*
 112  * pm-components property defintions for this machine type.
 113  *
 114  * Fully constructed pm-components property should be an array of
 115  * strings that look something like:
 116  *
 117  * pmc[0] = "NAME=CPU Speed"
 118  * pmc[1] = "1=2800MHz"
 119  * pmc[2] = "2=3200MHz"
 120  *
 121  * The amount of memory needed for each string is:
 122  *      digits for power level + '=' +  digits for freq + 'MHz' + '\0'
 123  */
 124 #define CPUDRV_COMP_SIZE() \
 125         (CPUDRV_COMP_MAX_DIG + 1 + CPUDRV_COMP_MAX_DIG + 3 + 1);
 126 #define CPUDRV_COMP_SPEED(cpupm, cur_spd) cur_spd->speed;
 127 #define CPUDRV_COMP_SPRINT(pmc, cpupm, cur_spd, comp_spd) \
 128         (void) sprintf(pmc, "%d=%dMHz", cur_spd->pm_level, comp_spd);
 129
 130 extern void cpudrv_set_topspeed(void *, int);
 131 extern int cpudrv_get_topspeed(void *);
 132 extern int cpudrv_get_topthrottle(cpu_t *);
 133 extern void cpudrv_manage_throttling(void *);
 134 extern void cpudrv_install_notify_handler(cpudrv_devstate_t *);
 135 extern void cpudrv_uninstall_notify_handler(cpudrv_devstate_t *);
 136 extern void cpudrv_redefine_topspeed(void *);
 137 extern uint_t cpudrv_get_speeds(cpudrv_devstate_t *, int **);
 138 extern void cpudrv_free_speeds(int *, uint_t);
 139
 140 #ifdef  __cplusplus
 141 }
 142 #endif
 143
 144 #endif /* _SYS_CPUDRV_MACH_H */