1 /* $NetBSD: intr.h,v 1.22 2006/01/24 23:51:42 uwe Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #ifndef _SH3_INTR_H_ 37 #define _SH3_INTR_H_ 38 39 #include <sys/device.h> 40 #include <sys/lock.h> 41 #include <sys/queue.h> 42 #include <sh3/psl.h> 43 44 /* Interrupt sharing types. */ 45 #define IST_NONE 0 /* none */ 46 #define IST_PULSE 1 /* pulsed */ 47 #define IST_EDGE 2 /* edge-triggered */ 48 #define IST_LEVEL 3 /* level-triggered */ 49 50 /* Interrupt priority levels */ 51 #define _IPL_N 15 52 #define _IPL_NSOFT 4 53 54 #define IPL_NONE 0 /* nothing */ 55 #define IPL_SOFT 1 56 #define IPL_SOFTCLOCK 2 /* timeouts */ 57 #define IPL_SOFTNET 3 /* protocol stacks */ 58 #define IPL_SOFTSERIAL 4 /* serial */ 59 60 #define IPL_SOFTNAMES { \ 61 "misc", \ 62 "clock", \ 63 "net", \ 64 "serial", \ 65 } 66 67 struct intc_intrhand { 68 int (*ih_func)(void *); 69 void *ih_arg; 70 int ih_level; /* SR.I[0:3] value */ 71 int ih_evtcode; /* INTEVT or INTEVT2(SH7709/SH7709A) */ 72 int ih_idx; /* evtcode -> intrhand mapping */ 73 }; 74 75 /* from 0x200 by 0x20 -> from 0 by 1 */ 76 #define EVTCODE_TO_MAP_INDEX(x) (((x) >> 5) - 0x10) 77 #define EVTCODE_TO_IH_INDEX(x) \ 78 __intc_evtcode_to_ih[EVTCODE_TO_MAP_INDEX(x)] 79 #define EVTCODE_IH(x) (&__intc_intrhand[EVTCODE_TO_IH_INDEX(x)]) 80 extern int8_t __intc_evtcode_to_ih[]; 81 extern struct intc_intrhand __intc_intrhand[]; 82 83 void intc_init(void); 84 void *intc_intr_establish(int, int, int, int (*)(void *), void *); 85 void intc_intr_disestablish(void *); 86 void intc_intr_enable(int); 87 void intc_intr_disable(int); 88 void intc_intr(int, int, int); 89 90 void intpri_intr_priority(int evtcode, int level); 91 92 /* 93 * software simulated interrupt 94 */ 95 struct sh_soft_intrhand { 96 TAILQ_ENTRY(sh_soft_intrhand) sih_q; 97 struct sh_soft_intr *sih_intrhead; 98 void (*sih_fn)(void *); 99 void *sih_arg; 100 int sih_pending; 101 }; 102 103 struct sh_soft_intr { 104 TAILQ_HEAD(, sh_soft_intrhand) softintr_q; 105 struct evcnt softintr_evcnt; 106 struct simplelock softintr_slock; 107 unsigned long softintr_ipl; 108 }; 109 110 #define softintr_schedule(arg) \ 111 do { \ 112 struct sh_soft_intrhand *__sih = (arg); \ 113 struct sh_soft_intr *__si = __sih->sih_intrhead; \ 114 int __s; \ 115 \ 116 __s = _cpu_intr_suspend(); \ 117 simple_lock(&__si->softintr_slock); \ 118 if (__sih->sih_pending == 0) { \ 119 TAILQ_INSERT_TAIL(&__si->softintr_q, __sih, sih_q); \ 120 __sih->sih_pending = 1; \ 121 setsoft(__si->softintr_ipl); \ 122 } \ 123 simple_unlock(&__si->softintr_slock); \ 124 _cpu_intr_resume(__s); \ 125 } while (/*CONSTCOND*/0) 126 127 void softintr_init(void); 128 void *softintr_establish(int, void (*)(void *), void *); 129 void softintr_disestablish(void *); 130 void softintr_dispatch(int); 131 void setsoft(int); 132 133 /* XXX For legacy software interrupts. */ 134 extern struct sh_soft_intrhand *softnet_intrhand; 135 136 #define setsoftnet() softintr_schedule(softnet_intrhand) 137 138 #endif /* !_SH3_INTR_H_ */ 139