intr.h revision 1.9
1/* $NetBSD: intr.h,v 1.9 2007/02/16 02:53:47 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#ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 69#include <powerpc/softintr.h> 70#endif 71 72/* 73 * Interrupt handler chains. intr_establish() inserts a handler into 74 * the list. The handler is called with its (single) argument. 75 */ 76struct intrhand { 77 int (*ih_fun)(void *); 78 void *ih_arg; 79 u_long ih_count; 80 struct intrhand *ih_next; 81 int ih_level; 82 int ih_irq; 83}; 84 85#include <sys/device.h> 86struct intrsource { 87 int is_type; 88 int is_level; 89 int is_hwirq; 90 int is_mask; 91 struct intrhand *is_hand; 92 struct evcnt is_ev; 93 char is_source[16]; 94}; 95 96int splraise(int); 97int spllower(int); 98void softintr(int); 99 100void do_pending_int(void); 101 102void init_intr(void); 103void init_intr_ivr(void); 104 105void enable_intr(void); 106void disable_intr(void); 107 108void *intr_establish(int, int, int, int (*)(void *), void *); 109void intr_disestablish(void *); 110 111void softnet(int); 112void softserial(void); 113int isa_intr(void); 114void isa_intr_mask(int); 115void isa_intr_clr(int); 116void isa_setirqstat(int, int, int); 117 118extern int imen; 119extern int imask[]; 120extern struct intrhand *intrhand[]; 121extern vaddr_t prep_intr_reg; 122 123#define ICU_LEN 32 124extern struct intrsource intrsources[ICU_LEN]; 125 126#define IRQ_SLAVE 2 127#define LEGAL_IRQ(x) ((x) >= 0 && (x) < ICU_LEN && (x) != IRQ_SLAVE) 128#define I8259_INTR_NUM 16 129 130#define PREP_INTR_REG 0xbffff000 131#define INTR_VECTOR_REG 0xff0 132 133#define SINT_CLOCK 0x20000000 134#define SINT_NET 0x40000000 135#define SINT_SERIAL 0x80000000 136#define SPL_CLOCK 0x00000001 137#define SINT_MASK (SINT_CLOCK|SINT_NET|SINT_SERIAL) 138 139#define CNT_SINT_NET 29 140#define CNT_SINT_CLOCK 30 141#define CNT_SINT_SERIAL 31 142#define CNT_CLOCK 0 143 144#define setsoftclock() softintr(SINT_CLOCK); 145#define setsoftnet() softintr(SINT_NET); 146#define setsoftserial() softintr(SINT_SERIAL); 147 148#define splx(x) spllower(x) 149#define spl0() spllower(0) 150 151typedef int ipl_t; 152typedef struct { 153 ipl_t _ipl; 154} ipl_cookie_t; 155 156static inline ipl_cookie_t 157makeiplcookie(ipl_t ipl) 158{ 159 160 return (ipl_cookie_t){._ipl = ipl}; 161} 162 163static inline int 164splraiseipl(ipl_cookie_t icookie) 165{ 166 167 return splraise(imask[icookie._ipl]); 168} 169 170#include <sys/spl.h> 171 172#endif /* !_LOCORE */ 173 174#endif /* !_IBMNWS_INTR_H_ */ 175