1 /* $NetBSD: intr.h,v 1.36 2023/07/11 17:54:54 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by 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 _HP300_INTR_H_ 33 #define _HP300_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 /* 44 * Interrupt "levels". These are a more abstract representation 45 * of interrupt levels, and do not have the same meaning as m68k 46 * CPU interrupt levels. They serve the following purposes: 47 * 48 * - properly order ISRs in the list for that CPU ipl 49 * - compute CPU PSL values for the spl*() calls. 50 * - used to create cookie for the splraiseipl(). 51 */ 52 #define IPL_NONE 0 53 #define IPL_SOFTCLOCK 1 54 #define IPL_SOFTBIO 2 55 #define IPL_SOFTNET 3 56 #define IPL_SOFTSERIAL 4 57 #define IPL_VM 5 58 #define IPL_SCHED 6 59 #define IPL_HIGH 7 60 #define NIPL 8 61 62 /* 63 * Convert PSL values to m68k CPU IPLs and vice-versa. 64 * Note: CPU IPL values are different from IPL_* used by splraiseipl(). 65 */ 66 #define PSLTOIPL(x) (((x) >> 8) & 0xf) 67 #define IPLTOPSL(x) ((((x) & 0xf) << 8) | PSL_S) 68 69 extern int idepth; 70 71 static inline bool 72 cpu_intr_p(void) 73 { 74 75 return idepth != 0; 76 } 77 78 extern const uint16_t ipl2psl_table[NIPL]; 79 80 typedef int ipl_t; 81 typedef struct { 82 uint16_t _psl; 83 } ipl_cookie_t; 84 85 #ifdef _KERNEL 86 87 static inline ipl_cookie_t 88 makeiplcookie(ipl_t ipl) 89 { 90 91 return (ipl_cookie_t){._psl = ipl2psl_table[ipl]}; 92 } 93 94 static inline int 95 splraiseipl(ipl_cookie_t icookie) 96 { 97 98 return _splraise(icookie._psl); 99 } 100 101 static inline void 102 splx(int sr) 103 { 104 105 __asm volatile("movew %0,%%sr" : : "di" (sr)); 106 } 107 108 /* These spl calls are _not_ to be used by machine-independent code. */ 109 #define splhil() splraise1() 110 #define splkbd() splhil() 111 112 /* These spl calls are used by machine-independent code. */ 113 #define spl0() _spl0() 114 115 #define splsoftbio() splraise1() 116 #define splsoftclock() splraise1() 117 #define splsoftnet() splraise1() 118 #define splsoftserial() splraise1() 119 #define splvm() splraise5() 120 #define splsched() spl6() 121 #define splhigh() spl7() 122 123 struct hp300_intrhand { 124 LIST_ENTRY(hp300_intrhand) ih_q; 125 int (*ih_fn)(void *); 126 void *ih_arg; 127 int ih_ipl; 128 int ih_priority; 129 }; 130 131 struct hp300_intr { 132 LIST_HEAD(, hp300_intrhand) hi_q; 133 struct evcnt hi_evcnt; 134 }; 135 136 /* intr.c */ 137 void intr_init(void); 138 void *intr_establish(int (*)(void *), void *, int, int); 139 void intr_disestablish(void *); 140 void intr_dispatch(int); 141 142 #endif /* _KERNEL */ 143 144 #endif /* _HP300_INTR_H_ */ 145