sys/arch/news68k/include/intr.h

   1 /*      $NetBSD: intr.h,v 1.24 2008/12/21 17:43:49 tsutsui 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 _NEWS68K_INTR_H_
  33 #define _NEWS68K_INTR_H_
  34
  35 #include <sys/evcnt.h>
  36 #include <sys/queue.h>
  37 #include <machine/psl.h>
  38 #include <m68k/asm_single.h>
  39
  40 #define IPL_NONE        0
  41 #define IPL_SOFTCLOCK   1
  42 #define IPL_SOFTBIO     2
  43 #define IPL_SOFTNET     3
  44 #define IPL_SOFTSERIAL  4
  45 #define IPL_VM          5
  46 #define IPL_SCHED       6
  47 #define IPL_HIGH        7
  48 #define NIPL            8
  49
  50 extern int idepth;
  51
  52 static inline bool
  53 cpu_intr_p(void)
  54 {
  55
  56         return idepth != 0;
  57 }
  58
  59 extern const uint16_t ipl2psl_table[NIPL];
  60
  61 typedef int ipl_t;
  62 typedef struct {
  63         uint16_t _psl;
  64 } ipl_cookie_t;
  65
  66 static inline ipl_cookie_t
  67 makeiplcookie(ipl_t ipl)
  68 {
  69
  70         return (ipl_cookie_t){._psl = ipl2psl_table[ipl]};
  71 }
  72
  73 static inline int
  74 splraiseipl(ipl_cookie_t icookie)
  75 {
  76
  77         return _splraise(icookie._psl);
  78 }
  79
  80 static inline void
  81 splx(int sr)
  82 {
  83
  84         __asm volatile("movw %0,%%sr" : : "di" (sr));
  85 }
  86
  87 /*
  88  * news68k can handle software interrupts by its own hardware
  89  * so has no need to check for any simulated interrupts, etc.
  90  */
  91 #define spl0()          _spl0()
  92
  93 #define splsoftbio()    splraise2()
  94 #define splsoftclock()  splraise2()
  95 #define splsoftnet()    splraise2()
  96 #define splsoftserial() splraise2()
  97 #define splvm()         splraise5()
  98 #define splhigh()       spl7()
  99 #define splsched()      spl7()
 100
 101 #endif /* _NEWS68K_INTR_H_ */