FreeBSD/Linux Kernel Cross Reference
sys/cddl/contrib/opensolaris/uts/common/sys/processor.h

     /*
      * CDDL HEADER START
      *
      * The contents of this file are subject to the terms of the
      * Common Development and Distribution License (the "License").
      * You may not use this file except in compliance with the License.
      *
      * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      * or http://www.opensolaris.org/os/licensing.
     * See the License for the specific language governing permissions
     * and limitations under the License.
     *
     * When distributing Covered Code, include this CDDL HEADER in each
     * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     * If applicable, add the following below this CDDL HEADER, with the
     * fields enclosed by brackets "[]" replaced with your own identifying
     * information: Portions Copyright [yyyy] [name of copyright owner]
     *
     * CDDL HEADER END
     */
    /*
     *      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T
     *        All Rights Reserved
     *
     */
    
    /*
     * Copyright 2014 Garrett D'Amore <garrett@damore.org>
     *
     * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     * Use is subject to license terms.
     */
    
    #ifndef _SYS_PROCESSOR_H
    #define _SYS_PROCESSOR_H
    
    #include <sys/types.h>
    #include <sys/procset.h>
    
    #ifdef  __cplusplus
    extern "C" {
    #endif
    
    /*
     * Definitions for p_online, processor_info & lgrp system calls.
     */
    
    /*
     * Type for an lgrpid
     */
    typedef uint16_t lgrpid_t;
    
    /*
     * Type for processor name (CPU number).
     */
    typedef int     processorid_t;
    typedef int     chipid_t;
    
    /*
     * Flags and return values for p_online(2), and pi_state for processor_info(2).
     * These flags are *not* for in-kernel examination of CPU states.
     * See <sys/cpuvar.h> for appropriate informational functions.
     */
    #define P_OFFLINE       0x0001  /* processor is offline, as quiet as possible */
    #define P_ONLINE        0x0002  /* processor is online */
    #define P_STATUS        0x0003  /* value passed to p_online to request status */
    #define P_FAULTED       0x0004  /* processor is offline, in faulted state */
    #define P_POWEROFF      0x0005  /* processor is powered off */
    #define P_NOINTR        0x0006  /* processor is online, but no I/O interrupts */
    #define P_SPARE         0x0007  /* processor is offline, can be reactivated */
    #define P_BAD           P_FAULTED       /* unused but defined by USL */
    #define P_FORCED        0x10000000      /* force processor offline */
    
    /*
     * String names for processor states defined above.
     */
    #define PS_OFFLINE      "off-line"
    #define PS_ONLINE       "on-line"
    #define PS_FAULTED      "faulted"
    #define PS_POWEROFF     "powered-off"
    #define PS_NOINTR       "no-intr"
    #define PS_SPARE        "spare"
    
    /*
     * Structure filled in by processor_info(2). This structure
     * SHOULD NOT BE MODIFIED. Changes to the structure would
     * negate ABI compatibility.
     *
     * The string fields are guaranteed to contain a NULL.
     *
     * The pi_fputypes field contains a (possibly empty) comma-separated
     * list of floating point identifier strings.
     */
    #define PI_TYPELEN      16      /* max size of CPU type string */
    #define PI_FPUTYPE      32      /* max size of FPU types string */
    
    typedef struct {
            int     pi_state;                       /* processor state, see above */
            char    pi_processor_type[PI_TYPELEN];  /* ASCII CPU type */
           char    pi_fputypes[PI_FPUTYPE];        /* ASCII FPU types */
           int     pi_clock;                       /* CPU clock freq in MHz */
   } processor_info_t;
   
   /*
    * Binding values for processor_bind(2)
    */
   #define PBIND_NONE      -1      /* LWP/thread is not bound */
   #define PBIND_QUERY     -2      /* don't set, just return the binding */
   #define PBIND_HARD      -3      /* prevents offlining CPU (default) */
   #define PBIND_SOFT      -4      /* allows offlining CPU */
   #define PBIND_QUERY_TYPE        -5      /* Return binding type */
   
   /*
    * User-level system call interface prototypes
    */
   #ifndef _KERNEL
   
   extern int      p_online(processorid_t processorid, int flag);
   extern int      processor_info(processorid_t processorid,
                       processor_info_t *infop);
   extern int      processor_bind(idtype_t idtype, id_t id,
                       processorid_t processorid, processorid_t *obind);
   extern processorid_t getcpuid(void);
   extern lgrpid_t gethomelgroup(void);
   
   #else   /* _KERNEL */
   
   /*
    * Internal interface prototypes
    */
   extern int      p_online_internal(processorid_t, int, int *);
   extern int      p_online_internal_locked(processorid_t, int, int *);
   
   #endif /* !_KERNEL */
   
   #ifdef __cplusplus
   }
   #endif
   
   #endif  /* _SYS_PROCESSOR_H */

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