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cpu.h revision 1.20 
      1 /*      $NetBSD: cpu.h,v 1.20 1997/01/31 02:11:51 thorpej 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 <sys/cdefs.h>
     36 #include <sys/device.h>
     37 
     38 #include <machine/mtpr.h>
     39 #include <machine/pcb.h>
     40 
     41 #define enablertclock()
     42 #define	cpu_wait(p)
     43 #define	cpu_swapout(p)
     44 
     45 extern struct cpu_dep cpu_calls[];
     46 
     47 struct	cpu_dep {
     48 	void	(*cpu_steal_pages) __P((void)); /* pmap init before mm is on */
     49 	void	(*cpu_clock) __P((void)); /* CPU dep RT clock start */
     50 	int	(*cpu_mchk) __P((caddr_t));   /* Machine check handling */
     51 	void	(*cpu_memerr) __P((void)); /* Memory subsystem errors */
     52 	    /* Autoconfiguration */
     53 	void	(*cpu_conf) __P((struct device *, struct device *, void *));
     54 	int	(*cpu_clkread) __P((time_t));	/* Read cpu clock time */
     55 	void	(*cpu_clkwrite) __P((void));	/* Write system time to cpu */
     56 };
     57 
     58 struct clockframe {
     59         int     pc;
     60         int     ps;
     61 };
     62 
     63 extern int cold;
     64 extern int mastercpu;
     65 
     66 #define	setsoftnet()	mtpr(12,PR_SIRR)
     67 #define setsoftclock()	mtpr(8,PR_SIRR)
     68 #define	todr()		mfpr(PR_TODR)
     69 /*
     70  * Preempt the current process if in interrupt from user mode,
     71  * or after the current trap/syscall if in system mode.
     72  */
     73 
     74 #define need_resched(){ \
     75 	want_resched++; \
     76 	mtpr(AST_OK,PR_ASTLVL); \
     77 	}
     78 
     79 /*
     80  * Notify the current process (p) that it has a signal pending,
     81  * process as soon as possible.
     82  */
     83 
     84 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
     85 
     86 extern	int     want_resched;   /* resched() was called */
     87 
     88 /*
     89  * Give a profiling tick to the current process when the user profiling
     90  * buffer pages are invalid.  On the hp300, request an ast to send us
     91  * through trap, marking the proc as needing a profiling tick.
     92  */
     93 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
     94 
     95 struct device;
     96 
     97 /* Some low-level prototypes */
     98 int	badaddr __P((caddr_t, int));
     99 void	cpu_set_kpc __P((struct proc *, void (*)(struct proc *)));
    100 void	cpu_swapin __P((struct proc *));
    101 int	hp_getdev __P((int, int, struct device **));
    102 int	ra_getdev __P((int, int, int, struct device **));
    103 void	configure __P((void));
    104 void	dumpconf __P((void));
    105 void	dumpsys __P((void));
    106 void	findroot __P((void));
    107 void	swapconf __P((void));
    108 #ifdef DDB
    109 int	kdbrint __P((int));
    110 #endif
    111