Annotation of prex-old/sys/include/irq.h, Revision 1.1
1.1 ! nbrk 1: /*-
! 2: * Copyright (c) 2005, Kohsuke Ohtani
! 3: * All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: * 3. Neither the name of the author nor the names of any co-contributors
! 14: * may be used to endorse or promote products derived from this software
! 15: * without specific prior written permission.
! 16: *
! 17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 27: * SUCH DAMAGE.
! 28: */
! 29:
! 30: #ifndef _IRQ_H
! 31: #define _IRQ_H
! 32:
! 33: #include <event.h>
! 34:
! 35: struct irq {
! 36: int vector; /* vector number */
! 37: int (*isr)(int); /* pointer to isr */
! 38: void (*ist)(int); /* pointer to ist */
! 39: u_int count; /* interrupt count */
! 40: int ist_request; /* number of ist request */
! 41: thread_t thread; /* thread id of ist */
! 42: struct event ist_event; /* event for ist */
! 43: };
! 44:
! 45: /*
! 46: * Return values from ISR.
! 47: */
! 48: #define INT_DONE 0 /* success */
! 49: #define INT_ERROR 1 /* interrupt not handled */
! 50: #define INT_CONTINUE 2 /* continue processing (Request IST) */
! 51:
! 52: /*
! 53: * Interrupt priority levels
! 54: */
! 55: #define IPL_NONE 0 /* nothing */
! 56: #define IPL_COMM 1 /* serial, parallel */
! 57: #define IPL_BLOCK 2 /* FDD, IDE */
! 58: #define IPL_NET 3 /* network */
! 59: #define IPL_DISPLAY 4 /* screen */
! 60: #define IPL_INPUT 5 /* keyboard, mouse */
! 61: #define IPL_AUDIO 6 /* audio */
! 62: #define IPL_BUS 7 /* USB, PCCARD */
! 63: #define IPL_RTC 8 /* RTC alarm */
! 64: #define IPL_PROFILE 9 /* profiling timer */
! 65: #define IPL_CLOCK 10 /* system clock timer */
! 66: #define IPL_HIGH 11 /* everything */
! 67:
! 68: #define NIPLS 12 /* number of IPLs */
! 69:
! 70: /*
! 71: * Macro to map an interrupt priority level to IST priority.
! 72: */
! 73: #define ISTPRIO(prio) (PRIO_IST + (IPL_HIGH - prio))
! 74:
! 75: extern int irq_attach(int, int, int, int (*)(int), void (*)(int));
! 76: extern void irq_detach(int);
! 77: extern void irq_lock(void);
! 78: extern void irq_unlock(void);
! 79: extern void irq_handler(int);
! 80: extern void irq_dump(void);
! 81: extern void irq_init(void);
! 82:
! 83: #endif /* !_IRQ_H */
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