The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i4b/include/i4b_global.h

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    1 /*-
    2  * Copyright (c) 1997, 2002 Hellmuth Michaelis. All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   23  * SUCH DAMAGE.
   24  */
   25 
   26 /*---------------------------------------------------------------------------
   27  *
   28  *      i4b_global.h - i4b global include file
   29  *      --------------------------------------
   30  *
   31  * $FreeBSD$
   32  *
   33  *      last edit-date: [Sun Mar 17 09:55:26 2002]
   34  *
   35  *---------------------------------------------------------------------------*/
   36 
   37 #ifndef _I4B_GLOBAL_H_
   38 #define _I4B_GLOBAL_H_
   39 
   40 /*---------------------------------------------------------------------------*
   41  *      hiding OS differences in the kernel
   42  *---------------------------------------------------------------------------*/ 
   43 
   44 #if defined(__FreeBSD__) && __FreeBSD__ >= 5
   45 /*
   46  * Deprecated LKM interface.
   47  */
   48 #include <sys/module.h>
   49 #define PSEUDO_SET(sym, name) \
   50         static int name ## _modevent(module_t mod, int type, void *data) \
   51         { \
   52                 void (*initfunc)(void *) = (void (*)(void *))data; \
   53                 switch (type) { \
   54                 case MOD_LOAD: \
   55                         /* printf(#name " module load\n"); */ \
   56                         initfunc(NULL); \
   57                         break; \
   58                 case MOD_UNLOAD: \
   59                         printf(#name " module unload - not possible for this module type\n"); \
   60                         return EINVAL; \
   61                 default: \
   62                         return EOPNOTSUPP; \
   63                 } \
   64                 return 0; \
   65         } \
   66         static moduledata_t name ## _mod = { \
   67                 #name, \
   68                 name ## _modevent, \
   69                 (void *)sym \
   70         }; \
   71         DECLARE_MODULE(name, name ## _mod, SI_SUB_PSEUDO, SI_ORDER_ANY)
   72 #endif
   73 
   74 /*---------------*/
   75 /* time handling */
   76 /*---------------*/
   77 
   78 #include <sys/param.h>
   79 
   80 #define TIMEOUT_FUNC_T  timeout_t *
   81 #define SECOND          time_second
   82 #define MICROTIME(x)    getmicrotime(&(x))
   83 
   84 /*----------------*/
   85 /* timer handling */
   86 /*----------------*/
   87 
   88 #define START_TIMER(XHANDLE, XF, XSC, XTIME) XHANDLE = timeout((TIMEOUT_FUNC_T)XF, (void*)XSC, XTIME)
   89 #define STOP_TIMER(XHANDLE, XF, XSC)    untimeout((TIMEOUT_FUNC_T)XF, (void*)XSC, XHANDLE)
   90 
   91 /*---------------------------------------------------------------------------*
   92  *      misc globally used things in the kernel
   93  *---------------------------------------------------------------------------*/ 
   94 
   95 /* timer states */
   96 
   97 #define TIMER_IDLE      1               /* a timer is running   */
   98 #define TIMER_ACTIVE    2               /* a timer is idle      */
   99 
  100 /* priority */
  101 #define I4BPRI          (PSOCK + 1)
  102 
  103 /* i4b's spl */
  104 
  105 #define SPLI4B()        splimp()        /* spl for i4b          */
  106 
  107 /* critial code region handling macros */
  108 
  109 #define CRIT_VAR        int _svd_spl_   /* declare variable     */
  110 #define CRIT_BEG        _svd_spl_ = SPLI4B()    /* save spl     */
  111 #define CRIT_END        splx(_svd_spl_) /* restore spl          */
  112 
  113 /* definitions for the STATUS indications L1 -> L2 -> L3 */
  114 
  115 #define STI_ATTACH      0       /* attach at boot time                  */
  116 #define STI_L1STAT      1       /* layer 1 status                       */
  117 #define STI_L2STAT      2       /* layer 2 status                       */
  118 #define STI_TEIASG      3       /* TEI assignments                      */
  119 #define STI_PDEACT      4       /* Layer 1 T4 expired = persistent deactivation */
  120 #define STI_NOL1ACC     5       /* no outgoing L1 access possible       */
  121 
  122 /* definitions for the COMMAND requests L3 -> L2 -> L1 */
  123 
  124 #define CMR_DOPEN       0       /* daemon opened /dev/i4b               */
  125 #define CMR_DCLOSE      1       /* daemon closed /dev/i4b               */
  126 #define CMR_SETTRACE    2       /* set D-channel and B-channel trace    */
  127 #define CMR_GCST        3       /* get chipset statistics               */
  128 #define CMR_CCST        4       /* clear chipset statistics             */
  129 
  130 #endif /* _I4B_GLOBAL_H_ */

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