arch/x86/include/sys/cpu.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_CPU_H
  27 #define _SYS_CPU_H
  28
  29 /*
  30  * WARNING:
  31  *      This header file is Obsolete and may be deleted in a
  32  *      future release of Solaris.
  33  */
  34
  35 /*
  36  * Include generic bustype cookies.
  37  */
  38 #include <sys/bustypes.h>
  39 #include <sys/inttypes.h>
  40
  41 #if defined(_KERNEL)
  42 #if defined(__xpv)
  43 #include <sys/hypervisor.h>
  44 #endif
  45 #if defined(__GNUC__) && defined(_ASM_INLINES)
  46 #include <asm/cpu.h>
  47 #endif
  48 #endif  /* _KERNEL */
  49
  50 #ifdef  __cplusplus
  51 extern "C" {
  52 #endif
  53
  54 #if defined(_KERNEL)
  55 extern void ht_pause(void);
  56 extern void cli(void);
  57 extern void sti(void);
  58 extern void i86_halt(void);
  59 extern void i86_monitor(volatile uint32_t *addr, uint32_t extensions,
  60     uint32_t hints);
  61 extern void i86_mwait(uint32_t data, uint32_t extensions);
  62
  63 /*
  64  * Used to insert cpu-dependent instructions into spin loops
  65  */
  66 #define SMT_PAUSE()             ht_pause()
  67
  68 /*
  69  *
  70  * C-state defines for the idle_state_transition DTrace probe
  71  *
  72  * The probe fires when the CPU undergoes an idle state change (e.g. C-state)
  73  * The argument passed is the C-state to which the CPU is transitioning.
  74  *
  75  * These states will be shared by cpupm subsystem, so they should be kept in
  76  * consistence with ACPI defined C states.
  77  */
  78 #define IDLE_STATE_C0 0
  79 #define IDLE_STATE_C1 1
  80 #define IDLE_STATE_C2 2
  81 #define IDLE_STATE_C3 3
  82
  83 #endif  /* _KERNEL */
  84
  85 #ifdef  __cplusplus
  86 }
  87 #endif
  88
  89 #endif  /* _SYS_CPU_H */