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Annotation of prex-old/sys/include/irq.h, Revision 1.1.1.1.2.1

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 */
1.1.1.1.2.1! nbrk       39:        int             istreq;         /* number of ist request */
1.1       nbrk       40:        thread_t        thread;         /* thread id of ist */
1.1.1.1.2.1! nbrk       41:        struct event    istevt;         /* event for ist */
1.1       nbrk       42: };
                     43:
                     44: /*
                     45:  * Return values from ISR.
                     46:  */
                     47: #define INT_DONE       0       /* success */
                     48: #define INT_ERROR      1       /* interrupt not handled */
                     49: #define INT_CONTINUE   2       /* continue processing (Request IST) */
                     50:
                     51: /*
                     52:  * Interrupt priority levels
                     53:  */
                     54: #define IPL_NONE       0       /* nothing */
                     55: #define IPL_COMM       1       /* serial, parallel */
                     56: #define IPL_BLOCK      2       /* FDD, IDE */
                     57: #define IPL_NET                3       /* network */
                     58: #define IPL_DISPLAY    4       /* screen */
                     59: #define IPL_INPUT      5       /* keyboard, mouse */
                     60: #define IPL_AUDIO      6       /* audio */
                     61: #define IPL_BUS                7       /* USB, PCCARD */
                     62: #define IPL_RTC                8       /* RTC alarm */
                     63: #define IPL_PROFILE    9       /* profiling timer */
                     64: #define IPL_CLOCK      10      /* system clock timer */
                     65: #define IPL_HIGH       11      /* everything */
                     66:
                     67: #define NIPLS          12      /* number of IPLs */
                     68:
                     69: /*
                     70:  * Macro to map an interrupt priority level to IST priority.
                     71:  */
                     72: #define ISTPRIO(prio)  (PRIO_IST + (IPL_HIGH - prio))
                     73:
1.1.1.1.2.1! nbrk       74: extern irq_t    irq_attach(int, int, int, int (*)(int), void (*)(int));
        !            75: extern void     irq_detach(irq_t);
1.1       nbrk       76: extern void     irq_lock(void);
                     77: extern void     irq_unlock(void);
                     78: extern void     irq_handler(int);
                     79: extern void     irq_init(void);
                     80:
                     81: #endif /* !_IRQ_H */