/*-
* Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef __MACHINE_INTR_MACHDEP_H__
#define __MACHINE_INTR_MACHDEP_H__
#ifdef _KERNEL
/* With I/O APIC's we can have up to 159 interrupts. */
#define NUM_IO_INTS 159
#define INTRCNT_COUNT (1 + NUM_IO_INTS * 2)
#ifndef LOCORE
typedef void inthand_t(u_int cs, u_int ef, u_int esp, u_int ss);
#define IDTVEC(name) __CONCAT(X,name)
struct intsrc;
/*
* Methods that a PIC provides to mask/unmask a given interrupt source,
* "turn on" the interrupt on the CPU side by setting up an IDT entry, and
* return the vector associated with this source.
*/
struct pic {
void (*pic_enable_source)(struct intsrc *);
void (*pic_disable_source)(struct intsrc *);
void (*pic_eoi_source)(struct intsrc *);
void (*pic_enable_intr)(struct intsrc *);
int (*pic_vector)(struct intsrc *);
int (*pic_source_pending)(struct intsrc *);
void (*pic_suspend)(struct intsrc *);
void (*pic_resume)(struct intsrc *);
};
/*
* An interrupt source. The upper-layer code uses the PIC methods to
* control a given source. The lower-layer PIC drivers can store additional
* private data in a given interrupt source such as an interrupt pin number
* or an I/O APIC pointer.
*/
struct intsrc {
struct pic *is_pic;
struct ithd *is_ithread;
u_long *is_count;
u_long *is_straycount;
u_int is_index;
};
struct intrframe;
extern struct mtx icu_lock;
int intr_add_handler(const char *name, int vector, driver_intr_t handler,
void *arg, enum intr_type flags, void **cookiep);
void intr_execute_handlers(struct intsrc *isrc, struct intrframe *iframe);
struct intsrc *intr_lookup_source(int vector);
int intr_register_source(struct intsrc *isrc);
int intr_remove_handler(void *cookie);
void intr_resume(void);
void intr_suspend(void);
#endif /* !LOCORE */
#endif /* _KERNEL */
#endif /* !__MACHINE_INTR_MACHDEP_H__ */
