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      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 */
    145