1 /* $NetBSD: intr.h,v 1.6 2008/04/28 20:23:26 martin 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 _LANDISK_INTR_H_ 30 #define _LANDISK_INTR_H_ 31 32 #include <sh3/intr.h> 33 34 /* Number of interrupt source */ 35 #define _INTR_N 16 36 37 /* Interrupt priority levels */ 38 #define IPL_VM 12 /* low i/o */ 39 #define IPL_SCHED 14 /* clock */ 40 #define IPL_HIGH 15 /* everything */ 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(IPL_NONE << 4) 64 #define splx(x) _cpu_intr_resume(x) 65 66 void intr_init(void); 67 void *extintr_establish(int irq, int level, int (*func)(void *), void *arg); 68 void extintr_disestablish(void *ih); 69 void extintr_enable(void *ih); 70 void extintr_disable(void *ih); 71 void extintr_disable_by_num(int irq); 72 73 #endif /* !_LANDISK_INTR_H_ */ 74