arch/x86/kernel/platform/i86pc/include/sys/cpu_idle.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  * Copyright (c) 2009, Intel Corporation.
  27  * All rights reserved.
  28  */
  29
  30 #ifndef _CPUIDLE_H
  31 #define _CPUIDLE_H
  32
  33 #include <sys/cpupm.h>
  34 #include <sys/cpu.h>
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif
  39 #define CPU_MAX_CSTATES 8
  40
  41 #define CPU_ACPI_C0     IDLE_STATE_C0
  42 #define CPU_ACPI_C1     IDLE_STATE_C1
  43 #define CPU_ACPI_C2     IDLE_STATE_C2
  44 #define CPU_ACPI_C3     IDLE_STATE_C3
  45
  46 #define BM_CTL          0x1
  47 #define BM_RLD          0x2
  48 #define BM_ARB_DIS      0x4
  49
  50 #define CPUID_TSC_INVARIANCE    0x100
  51
  52 #define CPU_IDLE_DEEP_CFG       (0x1)   /* Deep Idle disabled by user */
  53 #define CPU_IDLE_CPR_CFG        (0x2)   /* In CPR */
  54
  55 typedef struct cpu_idle_kstat_s {
  56         struct kstat_named      addr_space_id;  /* register address space id */
  57         struct kstat_named      cs_latency;     /* worst latency */
  58         struct kstat_named      cs_power;       /* average power consumption */
  59 } cpu_idle_kstat_t;
  60
  61 extern cpupm_state_ops_t cpu_idle_ops;
  62
  63 extern void cpu_acpi_idle(void);
  64 extern void cstate_wakeup(cpu_t *, int);
  65 extern boolean_t cpu_deep_cstates_supported(void);
  66 extern void cpu_wakeup(cpu_t *, int);
  67 extern void cpu_wakeup_mwait(cpu_t *, int);
  68 extern void cpuidle_manage_cstates(void *);
  69 extern boolean_t cstate_timer_callback(int code);
  70
  71 #ifdef __cplusplus
  72 }
  73 #endif
  74
  75 #endif  /* _CPUIDLE_H */