1 /* $NetBSD: intr.h,v 1.25 2009/04/09 10:48:22 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_ */ 102