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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 */