sys/arch/atari/include/intr.h

   1 /*      $NetBSD: intr.h,v 1.20 2009/03/05 13:00:45 tsutsui Exp $        */
   2
   3 /*-
   4  * Copyright (c) 1996, 1997, 2007 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Leo Weppelman.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _ATARI_INTR_H_
  33 #define _ATARI_INTR_H_
  34
  35 #define IPL_NONE        0                   /* disable no interrupts        */
  36 #define IPL_SOFTCLOCK   1
  37 #define IPL_SOFTBIO     2
  38 #define IPL_SOFTNET     3
  39 #define IPL_SOFTSERIAL  4
  40 #define IPL_VM          5
  41 #define IPL_SCHED       6
  42 #define IPL_HIGH        7
  43 #define NIPL            8
  44
  45 #define IST_UNUSABLE    -1      /* interrupt cannot be used     */
  46 #define IST_NONE        0       /* none (dummy)                 */
  47 #define IST_PULSE       1       /* pulsed                       */
  48 #define IST_EDGE        2       /* edge-triggered               */
  49 #define IST_LEVEL       3       /* level-triggered              */
  50
  51 /*
  52  * spl functions; all but spl0 are done in-line
  53  */
  54 #include <machine/psl.h>
  55
  56 /* spl0 requires checking for software interrupts */
  57
  58 #define splsoftclock()          splraise1()
  59 #define splsoftbio()            splraise1()
  60 #define splsoftnet()            splraise1()
  61 #define splsoftserial()         splraise1()
  62 #define splvm()                 splraise4()
  63 #define splsched()              splraise6()
  64 #define splhigh()               spl7()
  65 #define splx(s)                 ((s) & PSL_IPL ? _spl(s) : spl0())
  66
  67 #ifdef _KERNEL
  68 int spl0(void);
  69
  70 extern const uint16_t ipl2psl_table[NIPL];
  71 extern int idepth;
  72
  73 typedef int ipl_t;
  74 typedef struct {
  75         uint16_t _psl;
  76 } ipl_cookie_t;
  77
  78 static inline ipl_cookie_t
  79 makeiplcookie(ipl_t ipl)
  80 {
  81
  82         return (ipl_cookie_t){._psl = ipl2psl_table[ipl]};
  83 }
  84
  85 static inline int
  86 splraiseipl(ipl_cookie_t icookie)
  87 {
  88
  89         return _splraise(icookie._psl);
  90 }
  91
  92 #include <sys/queue.h>
  93 #include <machine/cpu.h>        /* XXX: for clockframe */
  94
  95 struct clockframe;
  96
  97 #define AUTO_VEC        0x0001  /* We're dealing with an auto-vector    */
  98 #define USER_VEC        0x0002  /* We're dealing with an user-vector    */
  99
 100 #define FAST_VEC        0x0010  /* Fast, stash right into vector-table  */
 101 #define ARG_CLOCKFRAME  0x0020  /* Supply clockframe as an argument     */
 102
 103 /*
 104  * Interrupt handler chains.  intr_establish() inserts a handler into
 105  * the list.  The handler is called with its (single) argument or with a
 106  * 'standard' clockframe. This depends on 'ih_type'.
 107  */
 108 typedef int     (*hw_ifun_t)(void *, int);
 109
 110 struct intrhand {
 111         LIST_ENTRY(intrhand)    ih_link;
 112         hw_ifun_t               ih_fun;
 113         void                    *ih_arg;
 114         int                     ih_type;
 115         int                     ih_pri;
 116         int                     ih_vector;
 117         u_long                  *ih_intrcnt;
 118 };
 119
 120 void            intr_init(void);
 121 struct intrhand *intr_establish(int, int, int, hw_ifun_t, void *);
 122 int             intr_disestablish(struct intrhand *);
 123 void            intr_dispatch(struct clockframe);
 124 void            intr_glue(void);
 125
 126 /*
 127  * Exported by intrcnt.h
 128  */
 129 extern u_long   autovects[];
 130 extern u_long   intrcnt_auto[];
 131 extern u_long   uservects[];
 132 extern u_long   intrcnt_user[];
 133
 134 #endif /* _KERNEL */
 135
 136 #endif /* _ATARI_INTR_H_ */