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mtpr.h revision 1.3 
      1 /*	$NetBSD: mtpr.h,v 1.3 1996/07/04 07:25:13 leo Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1990 The Regents of the University of California.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * the Systems Programming Group of the University of Utah Computer
     10  * Science Department.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *	This product includes software developed by the University of
     23  *	California, Berkeley and its contributors.
     24  * 4. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  * from: Utah $Hdr: mtpr.h 1.1 90/07/09$
     41  *
     42  *	@(#)mtpr.h	7.2 (Berkeley) 11/3/90
     43  */
     44 
     45 #ifndef _MACHINE_MTPR_H_
     46 #define _MACHINE_MTPR_H_
     47 
     48 #ifdef _KERNEL
     49 
     50 /*
     51  * simulated software interrupt register
     52  */
     53 
     54 extern volatile unsigned char ssir;
     55 
     56 #define SIR_NET		0x1	/* call netintr()		*/
     57 #define SIR_CLOCK	0x2	/* call softclock()		*/
     58 #define	SIR_CBACK	0x4	/* walk the sicallback-chain	*/
     59 
     60 #define siroff(x)	\
     61 	{ asm volatile ("andb %0,%1" : : "di" ((u_char)~(x)), "g" (ssir)); }
     62 
     63 #define setsoftnet()	\
     64 	asm volatile ("orb %0,%1" : : "di" ((u_char)SIR_NET), "g" (ssir))
     65 #define setsoftclock()	\
     66 	asm volatile ("orb %0,%1" : : "di" ((u_char)SIR_CLOCK), "g" (ssir))
     67 #define setsoftcback()	\
     68 	asm volatile ("orb %0,%1" : : "di" ((u_char)SIR_CBACK), "g" (ssir))
     69 
     70 #endif /* _KERNEL */
     71 
     72 #endif /* !_MACHINE_MTPR_H_ */
     73