rtai-core/include/xenomai/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 _xenomai_intr_h
00047 #define _xenomai_intr_h
00048 
00049 #include "xenomai/thread.h"
00050 
00051 #define XN_ISR_HANDLED   0x0
00052 #define XN_ISR_CHAINED   0x1
00053 #define XN_ISR_SCHED_T   0x2
00054 #define XN_ISR_ENABLE    0x4
00055 
00056 #define XNINTR_ATTACHED  0x2
00057 
00058 #define XNINTR_MAX_PRIORITY 15
00059 
00060 struct xnintr;
00061 
00062 typedef int (*xnisr_t)(struct xnintr *intr);
00063 
00064 typedef void (*xnist_t)(struct xnintr *intr,
00065                         int hits);
00066 
00067 typedef struct xnintr {
00068 
00069     xnflags_t status;   
00071     unsigned irq;       /* IRQ number */
00072 
00073     int priority;       /* Service thread priority */
00074 
00075     xnisr_t isr;        /* Interrupt service routine */
00076 
00077     xnist_t ist;        /* Interrupt service task */
00078 
00079     int pending;        /* Pending IRQ hits */
00080 
00081     void *cookie;       /* User-defined cookie value */
00082 
00083     xnthread_t svcthread; /* Service thread */
00084 
00085 } xnintr_t;
00086 
00087 extern xnintr_t nkclock;
00088 
00089 #ifdef __cplusplus
00090 extern "C" {
00091 #endif
00092 
00093 int xnintr_init(xnintr_t *intr,
00094                 unsigned irq,
00095                 int priority,
00096                 xnisr_t isr,
00097                 xnist_t ist,
00098                 xnflags_t flags);
00099 
00100 int xnintr_destroy(xnintr_t *intr);
00101 
00102 int xnintr_attach(xnintr_t *intr,
00103                   void *cookie);
00104 
00105 int xnintr_detach(xnintr_t *intr);
00106 
00107 void xnintr_enable(xnintr_t *intr);
00108 
00109 void xnintr_disable(xnintr_t *intr);
00110     
00111 #ifdef __cplusplus
00112 }
00113 #endif
00114 
00115 #endif /* !_xenomai_intr_h */

Generated on Sat Jul 24 19:36:04 2004 for RTAI API by doxygen 1.3.4