intr.h revision 1.10
1/* $NetBSD: intr.h,v 1.10 2007/07/14 21:48:20 ad Exp $ */ 2 3/*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 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 FOUNDATION OR CONTRIBUTORS 30 * BE 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#ifndef _IBMNWS_INTR_H_ 40#define _IBMNWS_INTR_H_ 41 42/* Interrupt priority `levels'. */ 43#define IPL_NONE 9 /* nothing */ 44#define IPL_SOFTCLOCK 8 /* software clock interrupt */ 45#define IPL_SOFTNET 7 /* software network interrupt */ 46#define IPL_BIO 6 /* block I/O */ 47#define IPL_NET 5 /* network */ 48#define IPL_SOFTSERIAL 4 /* software serial interrupt */ 49#define IPL_TTY 3 /* terminal */ 50#define IPL_LPT IPL_TTY 51#define IPL_VM 3 /* memory allocation */ 52#define IPL_AUDIO 2 /* audio */ 53#define IPL_CLOCK 1 /* clock */ 54#define IPL_STATCLOCK IPL_CLOCK 55#define IPL_HIGH 1 /* everything */ 56#define IPL_SCHED IPL_HIGH 57#define IPL_LOCK IPL_HIGH 58#define IPL_SERIAL 0 /* serial */ 59#define NIPL 10 60 61/* Interrupt sharing types. */ 62#define IST_NONE 0 /* none */ 63#define IST_PULSE 1 /* pulsed */ 64#define IST_EDGE 2 /* edge-triggered */ 65#define IST_LEVEL 3 /* level-triggered */ 66 67#ifndef _LOCORE 68#include <powerpc/softintr.h> 69 70/* 71 * Interrupt handler chains. intr_establish() inserts a handler into 72 * the list. The handler is called with its (single) argument. 73 */ 74struct intrhand { 75 int (*ih_fun)(void *); 76 void *ih_arg; 77 u_long ih_count; 78 struct intrhand *ih_next; 79 int ih_level; 80 int ih_irq; 81}; 82 83#include <sys/device.h> 84struct intrsource { 85 int is_type; 86 int is_level; 87 int is_hwirq; 88 int is_mask; 89 struct intrhand *is_hand; 90 struct evcnt is_ev; 91 char is_source[16]; 92}; 93 94int splraise(int); 95int spllower(int); 96void softintr(int); 97 98void do_pending_int(void); 99 100void init_intr(void); 101void init_intr_ivr(void); 102 103void enable_intr(void); 104void disable_intr(void); 105 106void *intr_establish(int, int, int, int (*)(void *), void *); 107void intr_disestablish(void *); 108 109void softnet(int); 110void softserial(void); 111int isa_intr(void); 112void isa_intr_mask(int); 113void isa_intr_clr(int); 114void isa_setirqstat(int, int, int); 115 116extern int imen; 117extern int imask[]; 118extern struct intrhand *intrhand[]; 119extern vaddr_t prep_intr_reg; 120 121#define ICU_LEN 32 122extern struct intrsource intrsources[ICU_LEN]; 123 124#define IRQ_SLAVE 2 125#define LEGAL_IRQ(x) ((x) >= 0 && (x) < ICU_LEN && (x) != IRQ_SLAVE) 126#define I8259_INTR_NUM 16 127 128#define PREP_INTR_REG 0xbffff000 129#define INTR_VECTOR_REG 0xff0 130 131#define SINT_CLOCK 0x20000000 132#define SINT_NET 0x40000000 133#define SINT_SERIAL 0x80000000 134#define SPL_CLOCK 0x00000001 135#define SINT_MASK (SINT_CLOCK|SINT_NET|SINT_SERIAL) 136 137#define CNT_SINT_NET 29 138#define CNT_SINT_CLOCK 30 139#define CNT_SINT_SERIAL 31 140#define CNT_CLOCK 0 141 142#define setsoftclock() softintr(SINT_CLOCK); 143#define setsoftnet() softintr(SINT_NET); 144#define setsoftserial() softintr(SINT_SERIAL); 145 146#define splx(x) spllower(x) 147#define spl0() spllower(0) 148 149typedef int ipl_t; 150typedef struct { 151 ipl_t _ipl; 152} ipl_cookie_t; 153 154static inline ipl_cookie_t 155makeiplcookie(ipl_t ipl) 156{ 157 158 return (ipl_cookie_t){._ipl = ipl}; 159} 160 161static inline int 162splraiseipl(ipl_cookie_t icookie) 163{ 164 165 return splraise(imask[icookie._ipl]); 166} 167 168#include <sys/spl.h> 169 170#endif /* !_LOCORE */ 171 172#endif /* !_IBMNWS_INTR_H_ */ 173