1 /* $NetBSD: intr.h,v 1.28 2023/07/11 11:09:13 riastradh 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/types.h> 36 37 #include <sys/evcnt.h> 38 #include <sys/queue.h> 39 #include <sys/stdbool.h> 40 41 #include <machine/psl.h> 42 43 #include <m68k/asm_single.h> 44 45 #define IPL_NONE 0 46 #define IPL_SOFTCLOCK 1 47 #define IPL_SOFTBIO 2 48 #define IPL_SOFTNET 3 49 #define IPL_SOFTSERIAL 4 50 #define IPL_VM 5 51 #define IPL_SCHED 6 52 #define IPL_HIGH 7 53 #define NIPL 8 54 55 extern int idepth; 56 57 static __inline bool 58 cpu_intr_p(void) 59 { 60 61 return idepth != 0; 62 } 63 64 extern const uint16_t ipl2psl_table[NIPL]; 65 66 typedef int ipl_t; 67 typedef struct { 68 uint16_t _psl; 69 } ipl_cookie_t; 70 71 #ifdef _KERNEL 72 73 static __inline ipl_cookie_t 74 makeiplcookie(ipl_t ipl) 75 { 76 77 return (ipl_cookie_t){._psl = ipl2psl_table[ipl]}; 78 } 79 80 static __inline int 81 splraiseipl(ipl_cookie_t icookie) 82 { 83 84 return _splraise(icookie._psl); 85 } 86 87 static __inline void 88 splx(int sr) 89 { 90 91 __asm volatile("movw %0,%%sr" : : "di" (sr)); 92 } 93 94 /* 95 * news68k can handle software interrupts by its own hardware 96 * so has no need to check for any simulated interrupts, etc. 97 */ 98 #define spl0() _spl0() 99 100 #define splsoftbio() splraise2() 101 #define splsoftclock() splraise2() 102 #define splsoftnet() splraise2() 103 #define splsoftserial() splraise2() 104 #define splvm() splraise5() 105 #define splhigh() spl7() 106 #define splsched() spl7() 107 108 #endif 109 110 #endif /* _NEWS68K_INTR_H_ */ 111