intr.h

00001 /*
00002  * Copyright (C) 2001,2002,2003 Philippe Gerum <rpm@xenomai.org>.
00003  *
00004  * Xenomai is free software; you can redistribute it and/or modify it
00005  * under the terms of the GNU General Public License as published by
00006  * the Free Software Foundation; either version 2 of the License, or
00007  * (at your option) any later version.
00008  *
00009  * Xenomai is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with Xenomai; if not, write to the Free Software Foundation,
00016  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017  *
00018  * As a special exception, the RTAI project gives permission
00019  * for additional uses of the text contained in its release of
00020  * Xenomai.
00021  *
00022  * The exception is that, if you link the Xenomai libraries with other
00023  * files to produce an executable, this does not by itself cause the
00024  * resulting executable to be covered by the GNU General Public License.
00025  * Your use of that executable is in no way restricted on account of
00026  * linking the Xenomai libraries code into it.
00027  *
00028  * This exception does not however invalidate any other reasons why
00029  * the executable file might be covered by the GNU General Public
00030  * License.
00031  *
00032  * This exception applies only to the code released by the
00033  * RTAI project under the name Xenomai.  If you copy code from other
00034  * RTAI project releases into a copy of Xenomai, as the General Public
00035  * License permits, the exception does not apply to the code that you
00036  * add in this way.  To avoid misleading anyone as to the status of
00037  * such modified files, you must delete this exception notice from
00038  * them.
00039  *
00040  * If you write modifications of your own for Xenomai, it is your
00041  * choice whether to permit this exception to apply to your
00042  * modifications. If you do not wish that, delete this exception
00043  * notice.
00044  */
00045 
00046 #ifndef _RTAI_NUCLEUS_INTR_H
00047 #define _RTAI_NUCLEUS_INTR_H
00048 
00049 #include <nucleus/types.h>
00050 
00051 #define XN_ISR_HANDLED   0x0
00052 #define XN_ISR_CHAINED   0x1
00053 #define XN_ISR_ENABLE    0x2
00054 
00055 struct xnintr;
00056 
00057 typedef int (*xnisr_t)(struct xnintr *intr);
00058 
00059 typedef struct xnintr {
00060 
00061     xnflags_t status;   
00063     unsigned irq;       /* !< IRQ number. */
00064 
00065     xnisr_t isr;        /* !< Interrupt service routine. */
00066 
00067     void *cookie;       /* !< User-defined cookie value. */
00068 
00069 } xnintr_t;
00070 
00071 extern xnintr_t nkclock;
00072 
00073 #ifdef __cplusplus
00074 extern "C" {
00075 #endif
00076 
00077 void xnintr_clock_handler(void);
00078 
00079     /* Public interface. */
00080 
00081 int xnintr_init(xnintr_t *intr,
00082                 unsigned irq,
00083                 xnisr_t isr,
00084                 xnflags_t flags);
00085 
00086 int xnintr_destroy(xnintr_t *intr);
00087 
00088 int xnintr_attach(xnintr_t *intr,
00089                   void *cookie);
00090 
00091 int xnintr_detach(xnintr_t *intr);
00092 
00093 int xnintr_enable(xnintr_t *intr);
00094 
00095 int xnintr_disable(xnintr_t *intr);
00096     
00097 xnarch_cpumask_t xnintr_affinity(xnintr_t *intr,
00098                                  xnarch_cpumask_t cpumask);
00099 
00100 #ifdef __cplusplus
00101 }
00102 #endif
00103 
00104 #endif /* !_RTAI_NUCLEUS_INTR_H */

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