intr_machdep.h revision 151658
1193323Sed/*- 2193323Sed * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org> 3193323Sed * All rights reserved. 4193323Sed * 5193323Sed * Redistribution and use in source and binary forms, with or without 6193323Sed * modification, are permitted provided that the following conditions 7193323Sed * are met: 8193323Sed * 1. Redistributions of source code must retain the above copyright 9193323Sed * notice, this list of conditions and the following disclaimer. 10193323Sed * 2. Redistributions in binary form must reproduce the above copyright 11193323Sed * notice, this list of conditions and the following disclaimer in the 12193323Sed * documentation and/or other materials provided with the distribution. 13193323Sed * 14193323Sed * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15193323Sed * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16193323Sed * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17193323Sed * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18193323Sed * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19193323Sed * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20193323Sed * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21193323Sed * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22193323Sed * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23193323Sed * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24193323Sed * SUCH DAMAGE. 25193323Sed * 26207618Srdivacky * $FreeBSD: head/sys/amd64/include/intr_machdep.h 151658 2005-10-25 19:48:48Z jhb $ 27193323Sed */ 28198892Srdivacky 29193323Sed#ifndef __MACHINE_INTR_MACHDEP_H__ 30198892Srdivacky#define __MACHINE_INTR_MACHDEP_H__ 31218893Sdim 32193323Sed#ifdef _KERNEL 33193323Sed 34218893Sdim/* With I/O APIC's we can have up to 191 interrupts. */ 35193323Sed#define NUM_IO_INTS 191 36198090Srdivacky#define INTRCNT_COUNT (1 + NUM_IO_INTS * 2) 37193323Sed 38207618Srdivacky#ifndef LOCORE 39193323Sed 40193323Sedtypedef void inthand_t(u_int cs, u_int ef, u_int esp, u_int ss); 41198090Srdivacky 42193323Sed#define IDTVEC(name) __CONCAT(X,name) 43193323Sed 44218893Sdimstruct intsrc; 45218893Sdim 46218893Sdim/* 47218893Sdim * Methods that a PIC provides to mask/unmask a given interrupt source, 48218893Sdim * "turn on" the interrupt on the CPU side by setting up an IDT entry, and 49218893Sdim * return the vector associated with this source. 50218893Sdim */ 51218893Sdimstruct pic { 52207618Srdivacky void (*pic_enable_source)(struct intsrc *); 53207618Srdivacky void (*pic_disable_source)(struct intsrc *, int); 54193323Sed void (*pic_eoi_source)(struct intsrc *); 55193323Sed void (*pic_enable_intr)(struct intsrc *); 56198892Srdivacky int (*pic_vector)(struct intsrc *); 57207618Srdivacky int (*pic_source_pending)(struct intsrc *); 58207618Srdivacky void (*pic_suspend)(struct intsrc *); 59193323Sed void (*pic_resume)(struct intsrc *); 60193323Sed int (*pic_config_intr)(struct intsrc *, enum intr_trigger, 61218893Sdim enum intr_polarity); 62198090Srdivacky}; 63207618Srdivacky 64218893Sdim/* Flags for pic_disable_source() */ 65218893Sdimenum { 66193323Sed PIC_EOI, 67193323Sed PIC_NO_EOI, 68198090Srdivacky}; 69207618Srdivacky 70193323Sed/* 71193323Sed * An interrupt source. The upper-layer code uses the PIC methods to 72193323Sed * control a given source. The lower-layer PIC drivers can store additional 73193323Sed * private data in a given interrupt source such as an interrupt pin number 74210299Sed * or an I/O APIC pointer. 75193323Sed */ 76193323Sedstruct intsrc { 77193323Sed struct pic *is_pic; 78207618Srdivacky struct intr_event *is_event; 79207618Srdivacky u_long *is_count; 80218893Sdim u_long *is_straycount; 81218893Sdim u_int is_index; 82218893Sdim}; 83218893Sdim 84218893Sdimstruct intrframe; 85218893Sdim 86218893Sdimextern struct mtx icu_lock; 87218893Sdimextern int elcr_found; 88218893Sdim 89218893Sdim/* XXX: The elcr_* prototypes probably belong somewhere else. */ 90218893Sdimint elcr_probe(void); 91212904Sdimenum intr_trigger elcr_read_trigger(u_int irq); 92198892Srdivackyvoid elcr_resume(void); 93207618Srdivackyvoid elcr_write_trigger(u_int irq, enum intr_trigger trigger); 94193323Sedint intr_add_handler(const char *name, int vector, driver_intr_t handler, 95193323Sed void *arg, enum intr_type flags, void **cookiep); 96207618Srdivackyint intr_config_intr(int vector, enum intr_trigger trig, 97218893Sdim enum intr_polarity pol); 98218893Sdimvoid intr_execute_handlers(struct intsrc *isrc, struct intrframe *iframe); 99218893Sdimstruct intsrc *intr_lookup_source(int vector); 100193323Sedint intr_register_source(struct intsrc *isrc); 101207618Srdivackyint intr_remove_handler(void *cookie); 102218893Sdimvoid intr_resume(void); 103218893Sdimvoid intr_suspend(void); 104218893Sdimvoid intrcnt_add(const char *name, u_long **countp); 105207618Srdivacky 106193323Sed#endif /* !LOCORE */ 107193323Sed#endif /* _KERNEL */ 108193323Sed#endif /* !__MACHINE_INTR_MACHDEP_H__ */ 109193323Sed