1 /* $NetBSD: intr.h,v 1.21 2008/06/26 02:52:03 isaki Exp $ */ 2 3 /* 4 * Copyright (C) 1997 Scott Reynolds 5 * Copyright (C) 1998 Darrin Jewell 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef _NEXT68K_INTR_H_ 32 #define _NEXT68K_INTR_H_ 33 34 #include <machine/psl.h> 35 36 /* Probably want to dealwith IPL's here @@@ */ 37 38 #ifdef _KERNEL 39 40 /* spl0 requires checking for software interrupts */ 41 42 /* watch out for side effects */ 43 #define splx(s) ((s) & PSL_IPL ? _spl(s) : spl0()) 44 45 #define splsoftbio() splraise1() 46 #define splsoftnet() splraise1() 47 #define splsoftclock() splraise1() 48 #define splsoftserial() splraise1() 49 #define splvm() splraise6() 50 #define splhigh() spl7() 51 #define splsched() spl7() 52 53 #define spldma() splraise6() 54 55 /****************************************************************/ 56 57 #define IPL_NONE 0 58 #define IPL_SOFTCLOCK 1 59 #define IPL_SOFTBIO 2 60 #define IPL_SOFTNET 3 61 #define IPL_SOFTSERIAL 4 62 #define IPL_VM 5 63 #define IPL_SCHED 6 64 #define IPL_HIGH 7 65 #define NIPL 8 66 67 extern const uint16_t ipl2psl_table[NIPL]; 68 69 typedef int ipl_t; 70 typedef struct { 71 uint16_t _psl; 72 } ipl_cookie_t; 73 74 static inline ipl_cookie_t 75 makeiplcookie(ipl_t ipl) 76 { 77 78 return (ipl_cookie_t){._psl = ipl2psl_table[ipl]}; 79 } 80 81 static inline int 82 splraiseipl(ipl_cookie_t icookie) 83 { 84 85 return _splraise(icookie._psl); 86 } 87 88 /****************************************************************/ 89 90 /* locore.s */ 91 int spl0(void); 92 93 extern volatile u_long *intrstat; 94 extern volatile u_long *intrmask; 95 #define INTR_SETMASK(x) (*intrmask = (x)) 96 #define INTR_ENABLE(x) (*intrmask |= NEXT_I_BIT(x)) 97 #define INTR_DISABLE(x) (*intrmask &= (~NEXT_I_BIT(x))) 98 #define INTR_OCCURRED(x) (*intrstat & NEXT_I_BIT(x)) 99 100 #endif /* _KERNEL */ 101 102 #endif /* _NEXT68K_INTR_H_ */ 103