usr/src/uts/common/sys/cyclic.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 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_CYCLIC_H
  27 #define _SYS_CYCLIC_H
  28
  29 #ifdef  __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 #ifndef _ASM
  34 #include <sys/time.h>
  35 #include <sys/cpuvar.h>
  36 #include <sys/cpupart.h>
  37 #endif /* !_ASM */
  38
  39 #define CY_LOW_LEVEL            0
  40 #define CY_LOCK_LEVEL           1
  41 #define CY_HIGH_LEVEL           2
  42 #define CY_SOFT_LEVELS          2
  43 #define CY_LEVELS               3
  44
  45 #ifndef _ASM
  46
  47 typedef uintptr_t cyclic_id_t;
  48 typedef int cyc_index_t;
  49 typedef int cyc_cookie_t;
  50 typedef uint16_t cyc_level_t;
  51 typedef void (*cyc_func_t)(void *);
  52 typedef void *cyb_arg_t;
  53
  54 #define CYCLIC_NONE             ((cyclic_id_t)0)
  55
  56 typedef struct cyc_handler {
  57         cyc_func_t cyh_func;
  58         void *cyh_arg;
  59         cyc_level_t cyh_level;
  60 } cyc_handler_t;
  61
  62 typedef struct cyc_time {
  63         hrtime_t cyt_when;
  64         hrtime_t cyt_interval;
  65 } cyc_time_t;
  66
  67 typedef struct cyc_omni_handler {
  68         void (*cyo_online)(void *, cpu_t *, cyc_handler_t *, cyc_time_t *);
  69         void (*cyo_offline)(void *, cpu_t *, void *);
  70         void *cyo_arg;
  71 } cyc_omni_handler_t;
  72
  73 #define CY_INFINITY     INT64_MAX
  74
  75 #ifdef _KERNEL
  76
  77 extern cyclic_id_t cyclic_add(cyc_handler_t *, cyc_time_t *);
  78 extern cyclic_id_t cyclic_add_omni(cyc_omni_handler_t *);
  79 extern void cyclic_remove(cyclic_id_t);
  80 extern void cyclic_bind(cyclic_id_t, cpu_t *, cpupart_t *);
  81 extern int cyclic_reprogram(cyclic_id_t, hrtime_t);
  82 extern hrtime_t cyclic_getres();
  83
  84 extern int cyclic_offline(cpu_t *cpu);
  85 extern void cyclic_online(cpu_t *cpu);
  86 extern int cyclic_juggle(cpu_t *cpu);
  87 extern void cyclic_move_in(cpu_t *);
  88 extern int cyclic_move_out(cpu_t *);
  89 extern void cyclic_suspend();
  90 extern void cyclic_resume();
  91
  92 extern void cyclic_fire(cpu_t *cpu);
  93 extern void cyclic_softint(cpu_t *cpu, cyc_level_t level);
  94
  95 #endif /* _KERNEL */
  96
  97 #endif /* !_ASM */
  98
  99 #ifdef  __cplusplus
 100 }
 101 #endif
 102
 103 #endif /* _SYS_CYCLIC_H */