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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #ifndef _DREAMCAST_INTR_H_ 37 #define _DREAMCAST_INTR_H_ 38 39 #include <sh3/intr.h> 40 41 /* Number of interrupt source */ 42 #define _INTR_N 10 /* TMU0, TMU1, TMU2, SCIF * 4, IRL * 3 */ 43 44 /* Interrupt priority levels */ 45 #define IPL_VM 12 46 #define IPL_SCHED 14 47 #define IPL_HIGH 15 48 49 typedef uint8_t ipl_t; 50 typedef struct { 51 ipl_t _ipl; 52 } ipl_cookie_t; 53 54 static inline ipl_cookie_t 55 makeiplcookie(ipl_t ipl) 56 { 57 58 return (ipl_cookie_t){._ipl = ipl << 4}; 59 } 60 61 static inline int 62 splraiseipl(ipl_cookie_t icookie) 63 { 64 65 return _cpu_intr_raise(icookie._ipl); 66 } 67 68 #include <sys/spl.h> 69 70 #define spl0() _cpu_intr_resume(0) 71 #define splx(x) _cpu_intr_resume(x) 72 73 #endif /* !_DREAMCAST_INTR_H_ */ 74