1 /* $NetBSD: intr.h,v 1.33 2009/04/09 10:29:09 tsutsui 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/evcnt.h> 36 #include <sys/queue.h> 37 #include <machine/psl.h> 38 39 /* 40 * Interrupt "levels". These are a more abstract representation 41 * of interrupt levels, and do not have the same meaning as m68k 42 * CPU interrupt levels. They serve the following purposes: 43 * 44 * - properly order ISRs in the list for that CPU ipl 45 * - compute CPU PSL values for the spl*() calls. 46 * - used to create cookie for the splraiseipl(). 47 */ 48 #define IPL_NONE 0 49 #define IPL_SOFTCLOCK 1 50 #define IPL_SOFTBIO 2 51 #define IPL_SOFTNET 3 52 #define IPL_SOFTSERIAL 4 53 #define IPL_VM 5 54 #define IPL_SCHED 6 55 #define IPL_HIGH 7 56 #define NIPL 8 57 58 /* 59 * Convert PSL values to m68k CPU IPLs and vice-versa. 60 * Note: CPU IPL values are different from IPL_* used by splraiseipl(). 61 */ 62 #define PSLTOIPL(x) (((x) >> 8) & 0xf) 63 #define IPLTOPSL(x) ((((x) & 0xf) << 8) | PSL_S) 64 65 extern int idepth; 66 67 static inline bool 68 cpu_intr_p(void) 69 { 70 71 return idepth != 0; 72 } 73 74 extern const uint16_t ipl2psl_table[NIPL]; 75 76 typedef int ipl_t; 77 typedef struct { 78 uint16_t _psl; 79 } ipl_cookie_t; 80 81 static inline ipl_cookie_t 82 makeiplcookie(ipl_t ipl) 83 { 84 85 return (ipl_cookie_t){._psl = ipl2psl_table[ipl]}; 86 } 87 88 static inline int 89 splraiseipl(ipl_cookie_t icookie) 90 { 91 92 return _splraise(icookie._psl); 93 } 94 95 static inline void 96 splx(int sr) 97 { 98 99 __asm volatile("movew %0,%%sr" : : "di" (sr)); 100 } 101 102 /* These spl calls are _not_ to be used by machine-independent code. */ 103 #define splhil() splraise1() 104 #define splkbd() splhil() 105 106 /* These spl calls are used by machine-independent code. */ 107 #define spl0() _spl0() 108 109 #define splsoftbio() splraise1() 110 #define splsoftclock() splraise1() 111 #define splsoftnet() splraise1() 112 #define splsoftserial() splraise1() 113 #define splvm() splraise5() 114 #define splsched() spl6() 115 #define splhigh() spl7() 116 117 struct hp300_intrhand { 118 LIST_ENTRY(hp300_intrhand) ih_q; 119 int (*ih_fn)(void *); 120 void *ih_arg; 121 int ih_ipl; 122 int ih_priority; 123 }; 124 125 struct hp300_intr { 126 LIST_HEAD(, hp300_intrhand) hi_q; 127 struct evcnt hi_evcnt; 128 }; 129 130 /* intr.c */ 131 void intr_init(void); 132 void *intr_establish(int (*)(void *), void *, int, int); 133 void intr_disestablish(void *); 134 void intr_dispatch(int); 135 136 #endif /* _HP300_INTR_H_ */ 137