sys/arch/dreamcast/include/intr.h

   1 /*      $NetBSD: intr.h,v 1.8 2007/12/03 15:33:28 ad Exp $      */
   2
   3 /*-
   4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef _DREAMCAST_INTR_H_
  30 #define _DREAMCAST_INTR_H_
  31
  32 #include <sh3/intr.h>
  33
  34 /* Number of interrupt source */
  35 #define _INTR_N         10      /* TMU0, TMU1, TMU2, SCIF * 4, IRL * 3 */
  36
  37 /* Interrupt priority levels */
  38 #define IPL_VM          12
  39 #define IPL_SCHED       14
  40 #define IPL_HIGH        15
  41
  42 typedef uint8_t ipl_t;
  43 typedef struct {
  44         ipl_t _ipl;
  45 } ipl_cookie_t;
  46
  47 static inline ipl_cookie_t
  48 makeiplcookie(ipl_t ipl)
  49 {
  50
  51         return (ipl_cookie_t){._ipl = ipl << 4};
  52 }
  53
  54 static inline int
  55 splraiseipl(ipl_cookie_t icookie)
  56 {
  57
  58         return _cpu_intr_raise(icookie._ipl);
  59 }
  60
  61 #include <sys/spl.h>
  62
  63 #define spl0()                  _cpu_intr_resume(0)
  64 #define splx(x)                 _cpu_intr_resume(x)
  65
  66 #endif /* !_DREAMCAST_INTR_H_ */