File: [local] / prex-old / sys / include / irq.h (download)
Revision 1.1.1.1 (vendor branch), Tue Jun 3 09:38:45 2008 UTC (16 years, 3 months ago) by nbrk
Branch: MAIN, KOHSUKE
CVS Tags: PREX_0_7_BASE, HEAD Branch point for: PREX_0_8_BASE
Changes since 1.1: +0 -0 lines
Yeah, this is an initial import of Prex, portable real-time microkernel
operating system. I wanna hack it for non-profit but fun, so let it in.
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/*-
* Copyright (c) 2005, Kohsuke Ohtani
* 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.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*/
#ifndef _IRQ_H
#define _IRQ_H
#include <event.h>
struct irq {
int vector; /* vector number */
int (*isr)(int); /* pointer to isr */
void (*ist)(int); /* pointer to ist */
u_int count; /* interrupt count */
int ist_request; /* number of ist request */
thread_t thread; /* thread id of ist */
struct event ist_event; /* event for ist */
};
/*
* Return values from ISR.
*/
#define INT_DONE 0 /* success */
#define INT_ERROR 1 /* interrupt not handled */
#define INT_CONTINUE 2 /* continue processing (Request IST) */
/*
* Interrupt priority levels
*/
#define IPL_NONE 0 /* nothing */
#define IPL_COMM 1 /* serial, parallel */
#define IPL_BLOCK 2 /* FDD, IDE */
#define IPL_NET 3 /* network */
#define IPL_DISPLAY 4 /* screen */
#define IPL_INPUT 5 /* keyboard, mouse */
#define IPL_AUDIO 6 /* audio */
#define IPL_BUS 7 /* USB, PCCARD */
#define IPL_RTC 8 /* RTC alarm */
#define IPL_PROFILE 9 /* profiling timer */
#define IPL_CLOCK 10 /* system clock timer */
#define IPL_HIGH 11 /* everything */
#define NIPLS 12 /* number of IPLs */
/*
* Macro to map an interrupt priority level to IST priority.
*/
#define ISTPRIO(prio) (PRIO_IST + (IPL_HIGH - prio))
extern int irq_attach(int, int, int, int (*)(int), void (*)(int));
extern void irq_detach(int);
extern void irq_lock(void);
extern void irq_unlock(void);
extern void irq_handler(int);
extern void irq_dump(void);
extern void irq_init(void);
#endif /* !_IRQ_H */