1 /* $OpenBSD: intr.h,v 1.25 2024/03/29 21:29:34 miod Exp $ */ 2 /* $NetBSD: intr.h,v 1.8 2001/01/14 23:50:30 thorpej Exp $ */ 3 4 /*- 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Paul Kranenburg. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _MACHINE_INTR_H_ 34 #define _MACHINE_INTR_H_ 35 36 #include <sparc64/sparc64/intreg.h> 37 38 #include <sys/evcount.h> 39 40 /* 41 * Interrupt handler chains. Interrupt handlers should return 0 for 42 * ``not me'' or 1 (``I took care of it''). intr_establish() inserts a 43 * handler into the list. The handler is called with its (single) 44 * argument, or with a pointer to a clockframe if ih_arg is NULL. 45 */ 46 struct intrhand { 47 int (*ih_fun)(void *); 48 void *ih_arg; 49 short ih_number; /* interrupt number */ 50 /* the H/W provides */ 51 char ih_pil; /* interrupt priority */ 52 char ih_mpsafe; 53 struct intrhand *ih_next; /* global list */ 54 struct intrhand *ih_pending; /* pending list */ 55 volatile u_int64_t *ih_map; /* interrupt map reg */ 56 volatile u_int64_t *ih_clr; /* clear interrupt reg */ 57 void (*ih_ack)(struct intrhand *); 58 struct evcount ih_count; /* # of interrupts */ 59 const void *ih_bus; /* parent bus */ 60 struct cpu_info *ih_cpu; /* target */ 61 char ih_name[32]; /* device name */ 62 }; 63 64 extern struct intrhand *intrlev[MAXINTNUM]; 65 66 void intr_establish(struct intrhand *); 67 68 /* XXX - arbitrary numbers; no interpretation is defined yet */ 69 #define IPL_NONE 0 /* nothing */ 70 #define IPL_SOFTINT 1 /* softint */ 71 #define IPL_SOFTCLOCK 1 /* timeouts */ 72 #define IPL_SOFTNET 2 /* protocol stack */ 73 #define IPL_BIO PIL_BIO /* block I/O */ 74 #define IPL_NET PIL_NET /* network */ 75 #define IPL_SOFTTTY 4 /* delayed terminal handling */ 76 #define IPL_TTY PIL_TTY /* terminal */ 77 #define IPL_VM PIL_VM /* memory allocation */ 78 #define IPL_AUDIO PIL_AUD /* audio */ 79 #define IPL_CLOCK PIL_CLOCK /* clock */ 80 #define IPL_SERIAL PIL_SER /* serial */ 81 #define IPL_SCHED PIL_SCHED /* scheduler */ 82 #define IPL_STATCLOCK PIL_STATCLOCK /* statclock */ 83 #define IPL_HIGH PIL_HIGH /* everything */ 84 85 #define spl0() _spl(IPL_NONE) 86 #define splsoftclock() _splraise(IPL_SOFTCLOCK) 87 #define splsoftnet() _splraise(IPL_SOFTNET) 88 #define splbio() _splraise(IPL_BIO) 89 #define splnet() _splraise(IPL_NET) 90 #define splsofttty() _splraise(IPL_SOFTTTY) 91 #define spltty() _splraise(IPL_TTY) 92 #define splvm() _splraise(IPL_VM) 93 #define splaudio() _splraise(IPL_AUDIO) 94 #define splclock() _splraise(IPL_CLOCK) 95 #define splserial() _splraise(IPL_SERIAL) 96 #define splsched() _splraise(IPL_SCHED) 97 #define splstatclock() _splraise(IPL_STATCLOCK) 98 #define splhigh() _splraise(IPL_HIGH) 99 #define splx(_oldipl) _splx(_oldipl) 100 101 #define splzs() splserial() 102 103 #define IPL_MPFLOOR IPL_SERIAL 104 #define IPL_MPSAFE 0x100 105 106 int splraise(int); 107 void intr_barrier(void *); 108 109 void *softintr_establish(int, void (*)(void *), void *); 110 void softintr_disestablish(void *); 111 void softintr_schedule(void *); 112 113 void send_softint(int, struct intrhand *); 114 115 #endif /* _MACHINE_INTR_H_ */ 116