sys/arch/evbarm/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 _EVBARM_INTR_H_
  39 #define _EVBARM_INTR_H_
  40
  41 #ifdef _KERNEL
  42
  43 /* Interrupt priority "levels". */
  44 #ifdef __HAVE_FAST_SOFTINTS
  45 #define IPL_NONE        0               /* nothing */
  46 #define IPL_SOFTCLOCK   1               /* clock */
  47 #define IPL_SOFTBIO     2               /* block I/O */
  48 #define IPL_SOFTNET     3               /* software network interrupt */
  49 #define IPL_SOFTSERIAL  4               /* software serial interrupt */
  50 #define IPL_VM          5               /* memory allocation */
  51 #define IPL_SCHED       6               /* clock interrupt */
  52 #define IPL_HIGH        7               /* everything */
  53
  54 #define NIPL            8
  55 #else
  56 #define IPL_NONE        0               /* nothing */
  57 #define IPL_SOFTCLOCK   IPL_NONE        /* clock */
  58 #define IPL_SOFTBIO     IPL_NONE        /* block I/O */
  59 #define IPL_SOFTNET     IPL_NONE        /* software network interrupt */
  60 #define IPL_SOFTSERIAL  IPL_NONE        /* software serial interrupt */
  61 #define IPL_VM          1               /* memory allocation */
  62 #define IPL_SCHED       2               /* clock interrupt */
  63 #define IPL_HIGH        3               /* everything */
  64
  65 #define NIPL            4
  66 #endif
  67
  68 /* Interrupt sharing types. */
  69 #define IST_NONE        0       /* none */
  70 #define IST_PULSE       1       /* pulsed */
  71 #define IST_EDGE        2       /* edge-triggered */
  72 #define IST_LEVEL       3       /* level-triggered */
  73
  74 #define IST_LEVEL_LOW   IST_LEVEL
  75 #define IST_LEVEL_HIGH  4
  76 #define IST_EDGE_FALLING IST_EDGE
  77 #define IST_EDGE_RISING 5
  78 #define IST_EDGE_BOTH   6
  79 #define IST_SOFT        7
  80
  81 #ifdef __OLD_INTERRUPT_CODE     /* XXX XXX XXX */
  82
  83 /* Software interrupt priority levels */
  84
  85 #ifdef __HAVE_FAST_SOFTINTS
  86 #define SOFTIRQ_CLOCK   0
  87 #define SOFTIRQ_BIO     1
  88 #define SOFTIRQ_NET     2
  89 #define SOFTIRQ_SERIAL  3
  90
  91 #define SOFTIRQ_BIT(x)  (1 << x)
  92 #endif
  93
  94 #include <arm/arm32/psl.h>
  95
  96 #else /* ! __OLD_INTERRUPT_CODE */
  97
  98 #define __NEWINTR       /* enables new hooks in cpu_fork()/cpu_switch() */
  99
 100 #ifndef _LOCORE
 101
 102 #include <sys/device.h>
 103 #include <sys/queue.h>
 104
 105 #if defined(_LKM)
 106
 107 int     _splraise(int);
 108 int     _spllower(int);
 109 void    splx(int);
 110 #ifdef __HAVE_FAST_SOFTINTS
 111 void    _setsoftintr(int);
 112 #endif
 113
 114 #else   /* _LKM */
 115
 116 #include "opt_arm_intr_impl.h"
 117
 118 #if defined(ARM_INTR_IMPL)
 119
 120 /*
 121  * Each board needs to define the following functions:
 122  *
 123  * int  _splraise(int);
 124  * int  _spllower(int);
 125  * void splx(int);
 126  *
 127  * These may be defined as functions, static inline functions, or macros,
 128  * but there must be a _spllower() and splx() defined as functions callable
 129  * from assembly language (for cpu_switch()).  However, since it's quite
 130  * useful to be able to inline splx(), you could do something like the
 131  * following:
 132  *
 133  * in <boardtype>_intr.h:
 134  *      static inline int
 135  *      boardtype_splx(int spl)
 136  *      {...}
 137  *
 138  *      #define splx(nspl)      boardtype_splx(nspl)
 139  *      ...
 140  * and in boardtype's machdep code:
 141  *
 142  *      ...
 143  *      #undef splx
 144  *      int
 145  *      splx(int spl)
 146  *      {
 147  *              return boardtype_splx(spl);
 148  *      }
 149  */
 150
 151 #include ARM_INTR_IMPL
 152
 153 #else /* ARM_INTR_IMPL */
 154
 155 #error ARM_INTR_IMPL not defined.
 156
 157 #endif  /* ARM_INTR_IMPL */
 158
 159 #endif /* _LKM */
 160
 161 typedef uint8_t ipl_t;
 162 typedef struct {
 163         ipl_t _ipl;
 164 } ipl_cookie_t;
 165
 166 static inline ipl_cookie_t
 167 makeiplcookie(ipl_t ipl)
 168 {
 169
 170         return (ipl_cookie_t){._ipl = ipl};
 171 }
 172
 173 static inline int
 174 splraiseipl(ipl_cookie_t icookie)
 175 {
 176
 177         return _splraise(icookie._ipl);
 178 }
 179
 180 #define spl0()          _spllower(IPL_NONE)
 181
 182 #include <sys/spl.h>
 183
 184 #endif /* ! _LOCORE */
 185
 186 #endif /* __OLD_INTERRUPT_CODE */
 187
 188 #endif /* _KERNEL */
 189
 190 #endif  /* _EVBARM_INTR_H_ */