interrupt.h

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00001 /*
00002  * Copyright (C) 2005 Martin Decky
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  * - Redistributions of source code must retain the above copyright
00010  *   notice, this list of conditions and the following disclaimer.
00011  * - Redistributions in binary form must reproduce the above copyright
00012  *   notice, this list of conditions and the following disclaimer in the
00013  *   documentation and/or other materials provided with the distribution.
00014  * - The name of the author may not be used to endorse or promote products
00015  *   derived from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
00018  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00019  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00020  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
00021  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00022  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00023  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00024  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00025  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
00026  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00027  */
00028 
00035 #ifndef __ppc32_INTERRUPT_H__
00036 #define __ppc32_INTERRUPT_H__
00037 
00038 #include <arch/exception.h>
00039 
00040 #define IRQ_COUNT       64
00041 
00042 
00043 #define IVT_ITEMS   (16 + IRQ_COUNT)
00044 #define INT_OFFSET  16
00045 
00046 #define int_register(it, name, handler) exc_register(((it) + INT_OFFSET), name, handler)
00047 
00048 #define VECTOR_DATA_STORAGE 2
00049 #define VECTOR_INSTRUCTION_STORAGE 3
00050 #define VECTOR_EXTERNAL 4
00051 #define VECTOR_DECREMENTER 8
00052 
00053 extern void start_decrementer(void);
00054 extern void interrupt_init(void);
00055 extern void extint_handler(int n, istate_t *istate);
00056 
00057 #endif
00058 

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