sys/arch/x68k/include/intr.h

   1 /*      $NetBSD: intr.h,v 1.19 2008/05/23 13:07:44 isaki Exp $  */
   2
   3 /*-
   4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Minoura Makoto and Jason R. Thorpe.
   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 _X68K_INTR_H_
  33 #define _X68K_INTR_H_
  34
  35 #include <machine/psl.h>
  36
  37 /* spl0 requires checking for software interrupts */
  38 void    spl0(void);
  39
  40 #define splsoftbio()    splraise1()
  41 #define splsoftclock()  splraise1()
  42 #define splsoftnet()    splraise1()
  43 #define splsoftserial() splraise1()
  44 #define splvm()         splraise5()
  45 #define splsched()      spl7()
  46 #define splhigh()       spl7()
  47
  48 #define splnone()       spl0()
  49 #define splzs()         splraise5()     /* disallow serial interrupts */
  50
  51 /* watch out for side effects */
  52 #define splx(s)         ((s) & PSL_IPL ? _spl(s) : spl0())
  53
  54 #define IPL_NONE        0
  55 #define IPL_SOFTCLOCK   1
  56 #define IPL_SOFTBIO     2
  57 #define IPL_SOFTNET     3
  58 #define IPL_SOFTSERIAL  4
  59 #define IPL_VM          5
  60 #define IPL_SCHED       6
  61 #define IPL_HIGH        7
  62 #define NIPL            8
  63
  64 extern const uint16_t ipl2psl_table[NIPL];
  65
  66 typedef int ipl_t;
  67 typedef struct {
  68         uint16_t _psl;
  69 } ipl_cookie_t;
  70
  71 static inline ipl_cookie_t
  72 makeiplcookie(ipl_t ipl)
  73 {
  74
  75         return (ipl_cookie_t){._psl = ipl2psl_table[ipl]};
  76 }
  77
  78 static inline int
  79 splraiseipl(ipl_cookie_t icookie)
  80 {
  81
  82         return _splraise(icookie._psl);
  83 }
  84
  85 #endif /* !_X68K_INTR_H_ */