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cpu.h revision 1.3 
      1 /*	$NetBSD: cpu.h,v 1.3 1994/10/26 08:02:02 cgd Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994 Ludd, University of Lule}, Sweden
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed at Ludd, University of Lule}
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33  /* All bugs are subject to removal without further notice */
     34 
     35 #include "cdefs.h"
     36 #include "vax/include/mtpr.h"
     37 
     38 #define enablertclock()
     39 
     40 #define setsoftclock()	mtpr(8,PR_SIRR)
     41 
     42 struct	cpu_dep {
     43 	int	(*cpu_loinit)();
     44 	int	(*cpu_clock)();
     45 	int	(*cpu_mem)();
     46 	int	(*cpu_config)();
     47 };
     48 
     49 struct clockframe {
     50         int     pc;
     51         int     ps;
     52 };
     53 
     54 struct cpuops {
     55 	int *nisse;
     56 	int (*cpu_memenable)();
     57 	int (*cpu_memerr)();
     58 	int (*cpu_mchk)();
     59 	int (*cpu_init)();
     60 };
     61 
     62 struct percpu {
     63 	int pc_cputype;
     64 	int pc_cpuspeed;
     65 	int pc_nioa;
     66 	struct iobus *pc_io;
     67 	struct cpuops *pc_ops;
     68 };
     69 
     70 struct clockops {
     71 	int (*p1)();
     72 	int (*p2)();
     73 	int (*p3)();
     74 };
     75 
     76 /*
     77  * Return timeofdayregister
     78  */
     79 
     80 #define todr()		mfpr(PR_TODR)
     81 /*
     82  * The following code are from the hp300 port/ragge.
     83  *      from: Utah Hdr: cpu.h 1.16 91/03/25
     84  *      from: @(#)cpu.h 7.7 (Berkeley) 6/27/91
     85  *      $Id: cpu.h,v 1.3 1994/10/26 08:02:02 cgd Exp $
     86  */
     87 /*
     88  * Preempt the current process if in interrupt from user mode,
     89  * or after the current trap/syscall if in system mode.
     90  */
     91 
     92 #define need_resched(){ \
     93 	want_resched++; \
     94 	mtpr(AST_OK,PR_ASTLVL); \
     95 	}
     96 
     97 /*
     98  * Give a profiling tick to the current process from the softclock
     99  * interrupt.  On hp300, request an ast to send us through trap(),
    100  * marking the proc as needing a profiling tick.
    101  */
    102 /* #define profile_tick(p, framep) { (p)->p_flag |= SOWEUPC; aston(); } */
    103 
    104 /*
    105  * Notify the current process (p) that it has a signal pending,
    106  * process as soon as possible.
    107  */
    108 
    109 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
    110 
    111 /* extern	int     astpending;     /* need to trap before returning to user mode */
    112 extern	int     want_resched;   /* resched() was called */
    113 
    114