intr_machdep.h revision 133907
1121982Sjhb/*- 2121982Sjhb * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org> 3121982Sjhb * All rights reserved. 4121982Sjhb * 5121982Sjhb * Redistribution and use in source and binary forms, with or without 6121982Sjhb * modification, are permitted provided that the following conditions 7121982Sjhb * are met: 8121982Sjhb * 1. Redistributions of source code must retain the above copyright 9121982Sjhb * notice, this list of conditions and the following disclaimer. 10121982Sjhb * 2. Redistributions in binary form must reproduce the above copyright 11121982Sjhb * notice, this list of conditions and the following disclaimer in the 12121982Sjhb * documentation and/or other materials provided with the distribution. 13121982Sjhb * 14121982Sjhb * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15121982Sjhb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16121982Sjhb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17121982Sjhb * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18121982Sjhb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19121982Sjhb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20121982Sjhb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21121982Sjhb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22121982Sjhb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23121982Sjhb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24121982Sjhb * SUCH DAMAGE. 25121982Sjhb * 26121982Sjhb * $FreeBSD: head/sys/amd64/include/intr_machdep.h 133907 2004-08-16 23:12:30Z peter $ 27121982Sjhb */ 28121982Sjhb 29121982Sjhb#ifndef __MACHINE_INTR_MACHDEP_H__ 30121982Sjhb#define __MACHINE_INTR_MACHDEP_H__ 31121982Sjhb 32121982Sjhb#ifdef _KERNEL 33121982Sjhb 34122690Sjhb/* With I/O APIC's we can have up to 191 interrupts. */ 35122690Sjhb#define NUM_IO_INTS 191 36121982Sjhb#define INTRCNT_COUNT (1 + NUM_IO_INTS * 2) 37121982Sjhb 38121982Sjhb#ifndef LOCORE 39121982Sjhb 40121982Sjhbtypedef void inthand_t(u_int cs, u_int ef, u_int esp, u_int ss); 41121982Sjhb 42121982Sjhb#define IDTVEC(name) __CONCAT(X,name) 43121982Sjhb 44121982Sjhbstruct intsrc; 45121982Sjhb 46121982Sjhb/* 47121982Sjhb * Methods that a PIC provides to mask/unmask a given interrupt source, 48121982Sjhb * "turn on" the interrupt on the CPU side by setting up an IDT entry, and 49121982Sjhb * return the vector associated with this source. 50121982Sjhb */ 51121982Sjhbstruct pic { 52121982Sjhb void (*pic_enable_source)(struct intsrc *); 53133907Speter void (*pic_disable_source)(struct intsrc *, int); 54121982Sjhb void (*pic_eoi_source)(struct intsrc *); 55121982Sjhb void (*pic_enable_intr)(struct intsrc *); 56121982Sjhb int (*pic_vector)(struct intsrc *); 57121982Sjhb int (*pic_source_pending)(struct intsrc *); 58121982Sjhb void (*pic_suspend)(struct intsrc *); 59121982Sjhb void (*pic_resume)(struct intsrc *); 60129284Speter int (*pic_config_intr)(struct intsrc *, enum intr_trigger, 61129284Speter enum intr_polarity); 62121982Sjhb}; 63121982Sjhb 64133907Speter/* Flags for pic_disable_source() */ 65133907Speterenum { 66133907Speter PIC_EOI, 67133907Speter PIC_NO_EOI, 68133907Speter}; 69133907Speter 70121982Sjhb/* 71121982Sjhb * An interrupt source. The upper-layer code uses the PIC methods to 72121982Sjhb * control a given source. The lower-layer PIC drivers can store additional 73121982Sjhb * private data in a given interrupt source such as an interrupt pin number 74121982Sjhb * or an I/O APIC pointer. 75121982Sjhb */ 76121982Sjhbstruct intsrc { 77121982Sjhb struct pic *is_pic; 78121982Sjhb struct ithd *is_ithread; 79121982Sjhb u_long *is_count; 80121982Sjhb u_long *is_straycount; 81121982Sjhb u_int is_index; 82121982Sjhb}; 83121982Sjhb 84121982Sjhbstruct intrframe; 85121982Sjhb 86121982Sjhbextern struct mtx icu_lock; 87121982Sjhb 88129284Speter/* XXX: The elcr_* prototypes probably belong somewhere else. */ 89129284Speterint elcr_probe(void); 90129284Speterenum intr_trigger elcr_read_trigger(u_int irq); 91129284Spetervoid elcr_resume(void); 92129284Spetervoid elcr_write_trigger(u_int irq, enum intr_trigger trigger); 93121982Sjhbint intr_add_handler(const char *name, int vector, driver_intr_t handler, 94121982Sjhb void *arg, enum intr_type flags, void **cookiep); 95129284Speterint intr_config_intr(int vector, enum intr_trigger trig, 96129284Speter enum intr_polarity pol); 97121982Sjhbvoid intr_execute_handlers(struct intsrc *isrc, struct intrframe *iframe); 98121982Sjhbstruct intsrc *intr_lookup_source(int vector); 99121982Sjhbint intr_register_source(struct intsrc *isrc); 100121982Sjhbint intr_remove_handler(void *cookie); 101121982Sjhbvoid intr_resume(void); 102121982Sjhbvoid intr_suspend(void); 103121982Sjhb 104121982Sjhb#endif /* !LOCORE */ 105121982Sjhb#endif /* _KERNEL */ 106121982Sjhb#endif /* !__MACHINE_INTR_MACHDEP_H__ */ 107