sys/arch/iyonix/include/intr.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 2001, 2003 Wasabi Systems, Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed for the NetBSD Project by
  20  *      Wasabi Systems, Inc.
  21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
  22  *    or promote products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
  29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 #ifndef _IYONIX_INTR_H_
  39 #define _IYONIX_INTR_H_
  40
  41 #ifdef _KERNEL
  42
  43 /* Interrupt priority "levels". */
  44 #define IPL_NONE        0       /* nothing */
  45 #define IPL_SOFTCLOCK   1       /* software clock interrupt */
  46 #define IPL_SOFTBIO     2       /* generic software interrupts */
  47 #define IPL_SOFTNET     3       /* software network interrupt */
  48 #define IPL_SOFTSERIAL  4       /* software serial interrupt */
  49 #define IPL_VM          5       /* memory allocation */
  50 #define IPL_SCHED       6       /* scheduler */
  51 #define IPL_HIGH        6       /* everything */
  52
  53 #define NIPL            7
  54
  55 /* Interrupt sharing types. */
  56 #define IST_NONE        0       /* none */
  57 #define IST_PULSE       1       /* pulsed */
  58 #define IST_EDGE        2       /* edge-triggered */
  59 #define IST_LEVEL       3       /* level-triggered */
  60
  61 #define IST_LEVEL_LOW    IST_LEVEL
  62 #define IST_LEVEL_HIGH   4
  63 #define IST_EDGE_FALLING IST_EDGE
  64 #define IST_EDGE_RISING  5
  65 #define IST_EDGE_BOTH    6
  66
  67 #define __NEWINTR       /* enables new hooks in cpu_fork()/cpu_switch() */
  68
  69 #ifndef _LOCORE
  70
  71 #if defined(_LKM)
  72
  73 int     _splraise(int);
  74 int     _spllower(int);
  75 void    splx(int);
  76
  77 #else   /* _LKM */
  78
  79 #include "opt_arm_intr_impl.h"
  80
  81 #if defined(ARM_INTR_IMPL)
  82
  83 /*
  84  * Each board needs to define the following functions:
  85  *
  86  * int  _splraise(int);
  87  * int  _spllower(int);
  88  * void splx(int);
  89  * void _setsoftintr(int);
  90  *
  91  * These may be defined as functions, static inline functions, or macros,
  92  * but there must be a _spllower() and splx() defined as functions callable
  93  * from assembly language (for cpu_switch()).  However, since it's quite
  94  * useful to be able to inline splx(), you could do something like the
  95  * following:
  96  *
  97  * in <boardtype>_intr.h:
  98  *      static inline int
  99  *      boardtype_splx(int spl)
 100  *      {...}
 101  *
 102  *      #define splx(nspl)      boardtype_splx(nspl)
 103  *      ...
 104  * and in boardtype's machdep code:
 105  *
 106  *      ...
 107  *      #undef splx
 108  *      int
 109  *      splx(int spl)
 110  *      {
 111  *              return boardtype_splx(spl);
 112  *      }
 113  */
 114
 115 #include ARM_INTR_IMPL
 116
 117 #else /* ARM_INTR_IMPL */
 118
 119 #error ARM_INTR_IMPL not defined.
 120
 121 #endif  /* ARM_INTR_IMPL */
 122
 123 #endif /* _LKM */
 124
 125 typedef uint8_t ipl_t;
 126 typedef struct {
 127         ipl_t _ipl;
 128 } ipl_cookie_t;
 129
 130 static inline ipl_cookie_t
 131 makeiplcookie(ipl_t ipl)
 132 {
 133
 134         return (ipl_cookie_t){._ipl = ipl};
 135 }
 136
 137 static inline int
 138 splraiseipl(ipl_cookie_t icookie)
 139 {
 140
 141         return _splraise(icookie._ipl);
 142 }
 143
 144 #define spl0()          _spllower(IPL_NONE)
 145
 146 #include <sys/spl.h>
 147
 148 #endif /* ! _LOCORE */
 149
 150 #endif /* _KERNEL */
 151
 152 #endif  /* _IYONIX_INTR_H_ */