1 /* $NetBSD: isr.h,v 1.1 2001/05/14 18:23:01 drochner Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE 30 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/queue.h> 40 41 /* 42 * The location and size of the autovectored interrupt portion 43 * of the vector table. 44 */ 45 #define ISRLOC 0x18 46 #define NISR 8 47 48 struct isr { 49 LIST_ENTRY(isr) isr_link; 50 int (*isr_func) __P((void *)); 51 void *isr_arg; 52 int isr_ipl; 53 int isr_priority; 54 }; 55 56 /* 57 * ISR priorities. These are not the same as interrupt levels. 58 * These serve 2 purposes: 59 * - properly order ISRs in the list 60 * - compute levels for spl*() calls. 61 */ 62 #define ISRPRI_BIO 0 63 #define ISRPRI_NET 1 64 #define ISRPRI_TTY 2 65 #define ISRPRI_TTYNOBUF 3 66 67 /* 68 * Convert PSL values to IPLs and vice-versa. 69 */ 70 #define PSLTOIPL(x) (((x) >> 8) & 0xf) 71 #define IPLTOPSL(x) ((((x) & 0xf) << 8) | PSL_S) 72 73 void isrinit __P((void)); 74 void *isrlink __P((int (*)(void *), void *, int, int)); 75 void isrunlink __P((void *)); 76 void isrdispatch __P((int)); 77 void isrprintlevels __P((void)); 78