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cpu.h revision 1.28 
      1 /*      $NetBSD: cpu.h,v 1.28 1998/06/09 14:03:24 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 #ifdef _KERNEL
     34 
     35 #include <sys/cdefs.h>
     36 #include <sys/device.h>
     37 
     38 #include <machine/mtpr.h>
     39 #include <machine/pcb.h>
     40 #include <machine/uvax.h>
     41 
     42 #define enablertclock()
     43 #define	cpu_wait(p)
     44 #define	cpu_swapout(p)
     45 
     46 /*
     47  * All cpu-dependent info is kept in this struct. Pointer to the
     48  * struct for the current cpu is set up in locore.c.
     49  */
     50 struct	cpu_dep {
     51 	void	(*cpu_steal_pages) __P((void)); /* pmap init before mm is on */
     52 	void	(*cpu_clock) __P((void)); /* CPU dep RT clock start */
     53 	int	(*cpu_mchk) __P((caddr_t));   /* Machine check handling */
     54 	void	(*cpu_memerr) __P((void)); /* Memory subsystem errors */
     55 	    /* Autoconfiguration */
     56 	void	(*cpu_conf) __P((struct device *, struct device *, void *));
     57 	int	(*cpu_clkread) __P((time_t));	/* Read cpu clock time */
     58 	void	(*cpu_clkwrite) __P((void));	/* Write system time to cpu */
     59 	int	cpu_vups;	/* speed of cpu */
     60 	void	(*cpu_halt) __P((void)); /* Cpu dependent halt call */
     61 	void	(*cpu_reboot) __P((int)); /* Cpu dependent reboot call */
     62 	void	(*cpu_clrf) __P((void)); /* Clear cold/warm start flags */
     63 };
     64 
     65 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */
     66 
     67 struct clockframe {
     68         int     pc;
     69         int     ps;
     70 };
     71 
     72 extern struct device *booted_from;
     73 extern int cold;
     74 extern int mastercpu;
     75 extern int bootdev;
     76 
     77 #define	setsoftnet()	mtpr(12,PR_SIRR)
     78 #define setsoftclock()	mtpr(8,PR_SIRR)
     79 #define	todr()		mfpr(PR_TODR)
     80 /*
     81  * Preempt the current process if in interrupt from user mode,
     82  * or after the current trap/syscall if in system mode.
     83  */
     84 
     85 #define need_resched(){ \
     86 	want_resched++; \
     87 	mtpr(AST_OK,PR_ASTLVL); \
     88 	}
     89 
     90 /*
     91  * Notify the current process (p) that it has a signal pending,
     92  * process as soon as possible.
     93  */
     94 
     95 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
     96 
     97 extern	int     want_resched;   /* resched() was called */
     98 
     99 /*
    100  * Give a profiling tick to the current process when the user profiling
    101  * buffer pages are invalid.  On the hp300, request an ast to send us
    102  * through trap, marking the proc as needing a profiling tick.
    103  */
    104 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
    105 
    106 struct device;
    107 
    108 /* Some low-level prototypes */
    109 int	badaddr __P((caddr_t, int));
    110 void	cpu_set_kpc __P((struct proc *, void (*)(struct proc *)));
    111 void	cpu_swapin __P((struct proc *));
    112 int	hp_getdev __P((int, int, struct device **));
    113 int	ra_getdev __P((int, int, int, struct device **));
    114 void	configure __P((void));
    115 void	dumpconf __P((void));
    116 void	dumpsys __P((void));
    117 void	swapconf __P((void));
    118 void	disk_printtype __P((int, int));
    119 void	disk_reallymapin __P((struct buf *, struct pte *, int, int));
    120 #ifdef DDB
    121 int	kdbrint __P((int));
    122 #endif
    123 #endif /* _KERNEL */
    124