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cpu.h revision 1.23 
      1 /*      $NetBSD: cpu.h,v 1.23 1997/03/15 15:09:41 ragge 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 #include <sys/cdefs.h>
     34 #include <sys/device.h>
     35 
     36 #include <machine/mtpr.h>
     37 #include <machine/pcb.h>
     38 #include <machine/uvax.h>
     39 
     40 #define enablertclock()
     41 #define	cpu_wait(p)
     42 #define	cpu_swapout(p)
     43 
     44 /*
     45  * All cpu-dependent info is kept in this struct. Pointer to the
     46  * struct for the current cpu is set up in locore.c.
     47  */
     48 struct	cpu_dep {
     49 	void	(*cpu_steal_pages) __P((void)); /* pmap init before mm is on */
     50 	void	(*cpu_clock) __P((void)); /* CPU dep RT clock start */
     51 	int	(*cpu_mchk) __P((caddr_t));   /* Machine check handling */
     52 	void	(*cpu_memerr) __P((void)); /* Memory subsystem errors */
     53 	    /* Autoconfiguration */
     54 	void	(*cpu_conf) __P((struct device *, struct device *, void *));
     55 	int	(*cpu_clkread) __P((time_t));	/* Read cpu clock time */
     56 	void	(*cpu_clkwrite) __P((void));	/* Write system time to cpu */
     57 	int	cpu_vups;	/* speed of cpu */
     58 	u_char  *cpu_intreq;	/* Used on some VAXstations */
     59 	u_char  *cpu_intclr;	/* Used on some VAXstations */
     60 	u_char  *cpu_intmsk;	/* Used on some VAXstations */
     61 	struct	uc_map *cpu_map; /* Map containing important addresses */
     62 };
     63 
     64 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */
     65 
     66 struct clockframe {
     67         int     pc;
     68         int     ps;
     69 };
     70 
     71 extern struct device *booted_from;
     72 extern int cold;
     73 extern int mastercpu;
     74 extern int bootdev;
     75 
     76 #define	setsoftnet()	mtpr(12,PR_SIRR)
     77 #define setsoftclock()	mtpr(8,PR_SIRR)
     78 #define	todr()		mfpr(PR_TODR)
     79 /*
     80  * Preempt the current process if in interrupt from user mode,
     81  * or after the current trap/syscall if in system mode.
     82  */
     83 
     84 #define need_resched(){ \
     85 	want_resched++; \
     86 	mtpr(AST_OK,PR_ASTLVL); \
     87 	}
     88 
     89 /*
     90  * Notify the current process (p) that it has a signal pending,
     91  * process as soon as possible.
     92  */
     93 
     94 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
     95 
     96 extern	int     want_resched;   /* resched() was called */
     97 
     98 /*
     99  * Give a profiling tick to the current process when the user profiling
    100  * buffer pages are invalid.  On the hp300, request an ast to send us
    101  * through trap, marking the proc as needing a profiling tick.
    102  */
    103 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
    104 
    105 struct device;
    106 
    107 /* Some low-level prototypes */
    108 int	badaddr __P((caddr_t, int));
    109 void	cpu_set_kpc __P((struct proc *, void (*)(struct proc *)));
    110 void	cpu_swapin __P((struct proc *));
    111 int	hp_getdev __P((int, int, struct device **));
    112 int	ra_getdev __P((int, int, int, struct device **));
    113 void	configure __P((void));
    114 void	dumpconf __P((void));
    115 void	dumpsys __P((void));
    116 void	swapconf __P((void));
    117 #ifdef DDB
    118 int	kdbrint __P((int));
    119 #endif
    120