sys/arch/arm/include/arm32/psl.h

   1 /*      $NetBSD: psl.h,v 1.20 2014/02/04 18:51:16 matt Exp $    */
   2
   3 /*
   4  * Copyright (c) 1995 Mark Brinicombe.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Mark Brinicombe
  18  *      for the NetBSD Project.
  19  * 4. The name of the company nor the name of the author may be used to
  20  *    endorse or promote products derived from this software without specific
  21  *    prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  24  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * RiscBSD kernel project
  36  *
  37  * psl.h
  38  *
  39  * spl prototypes.
  40  * Eventually this will become a set of defines.
  41  *
  42  * Created      : 21/07/95
  43  */
  44
  45 #ifndef _ARM_PSL_H_
  46 #define _ARM_PSL_H_
  47 #include <machine/intr.h>
  48
  49 /*
  50  * These are the different SPL states
  51  *
  52  * Each state has an interrupt mask associated with it which
  53  * indicate which interrupts are allowed.
  54  */
  55
  56 #define spl0()          splx(IPL_NONE)
  57 #define splsoftclock()  raisespl(IPL_SOFTCLOCK)
  58 #define splsoftbio()    raisespl(IPL_SOFTBIO)
  59 #define splsoftnet()    raisespl(IPL_SOFTNET)
  60 #define splsoftserial() raisespl(IPL_SOFTSERIAL)
  61 #define splvm()         raisespl(IPL_VM)
  62 #define splsched()      raisespl(IPL_SCHED)
  63 #define splhigh()       raisespl(IPL_HIGH)
  64
  65 #define IPL_SAFEPRI     IPL_NONE                /* for kern_sleepq.c */
  66
  67 #ifdef _KERNEL
  68 #ifndef _LOCORE
  69 int raisespl    (int);
  70 int lowerspl    (int);
  71 void splx       (int);
  72
  73 typedef uint8_t ipl_t;
  74 typedef struct {
  75         uint8_t _ipl;
  76 } ipl_cookie_t;
  77
  78 static inline ipl_cookie_t
  79 makeiplcookie(ipl_t ipl)
  80 {
  81
  82         return (ipl_cookie_t){._ipl = (uint8_t)ipl};
  83 }
  84
  85 static inline int
  86 splraiseipl(ipl_cookie_t icookie)
  87 {
  88
  89         return raisespl(icookie._ipl);
  90 }
  91 #endif /* _LOCORE */
  92 #endif /* _KERNEL */
  93
  94 #endif /* _ARM_PSL_H_ */
  95 /* End of psl.h */