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cpu.h revision 1.41 
      1 /*      $NetBSD: cpu.h,v 1.41 1999/10/21 20:01:36 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 #ifndef _VAX_CPU_H_
     34 #define _VAX_CPU_H_
     35 #ifdef _KERNEL
     36 
     37 #include <sys/cdefs.h>
     38 #include <sys/device.h>
     39 
     40 #include <machine/mtpr.h>
     41 #include <machine/pcb.h>
     42 #include <machine/uvax.h>
     43 #include <machine/psl.h>
     44 
     45 #define enablertclock()
     46 #define	cpu_wait(p)
     47 #define	cpu_swapout(p)
     48 #define	cpu_number()			0
     49 
     50 /*
     51  * All cpu-dependent info is kept in this struct. Pointer to the
     52  * struct for the current cpu is set up in locore.c.
     53  */
     54 struct	cpu_dep {
     55 	void	(*cpu_steal_pages) __P((void)); /* pmap init before mm is on */
     56 	int	(*cpu_mchk) __P((caddr_t));   /* Machine check handling */
     57 	void	(*cpu_memerr) __P((void)); /* Memory subsystem errors */
     58 	    /* Autoconfiguration */
     59 	void	(*cpu_conf) __P((void));
     60 	int	(*cpu_clkread) __P((time_t));	/* Read cpu clock time */
     61 	void	(*cpu_clkwrite) __P((void));	/* Write system time to cpu */
     62 	short	cpu_vups;	/* speed of cpu */
     63 	short	cpu_scbsz;	/* (estimated) size of system control block */
     64 	void	(*cpu_halt) __P((void)); /* Cpu dependent halt call */
     65 	void	(*cpu_reboot) __P((int)); /* Cpu dependent reboot call */
     66 	void	(*cpu_clrf) __P((void)); /* Clear cold/warm start flags */
     67 	void	(*cpu_subconf) __P((struct device *));/*config cpu dep. devs */
     68 };
     69 
     70 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */
     71 
     72 struct clockframe {
     73         int     pc;
     74         int     ps;
     75 };
     76 
     77 extern struct device *booted_from;
     78 extern int mastercpu;
     79 extern int bootdev;
     80 
     81 #define	setsoftnet()	mtpr(12,PR_SIRR)
     82 #define setsoftclock()	mtpr(8,PR_SIRR)
     83 #define	todr()		mfpr(PR_TODR)
     84 /*
     85  * Preempt the current process if in interrupt from user mode,
     86  * or after the current trap/syscall if in system mode.
     87  */
     88 
     89 #define need_resched(){ \
     90 	want_resched++; \
     91 	mtpr(AST_OK,PR_ASTLVL); \
     92 	}
     93 
     94 /*
     95  * Notify the current process (p) that it has a signal pending,
     96  * process as soon as possible.
     97  */
     98 
     99 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
    100 
    101 extern	int     want_resched;   /* resched() was called */
    102 
    103 /*
    104  * Give a profiling tick to the current process when the user profiling
    105  * buffer pages are invalid.  On the hp300, request an ast to send us
    106  * through trap, marking the proc as needing a profiling tick.
    107  */
    108 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
    109 
    110 /*
    111  * This defines the I/O device register space size in pages.
    112  */
    113 #define	IOSPSZ	((64*1024) / VAX_NBPG)	/* 64k == 128 pages */
    114 
    115 struct device;
    116 
    117 /* Some low-level prototypes */
    118 int	badaddr __P((caddr_t, int));
    119 void	cpu_swapin __P((struct proc *));
    120 int	hp_getdev __P((int, int, struct device **));
    121 int	ra_getdev __P((int, int, int, struct device **));
    122 void	dumpconf __P((void));
    123 void	dumpsys __P((void));
    124 void	swapconf __P((void));
    125 void	disk_printtype __P((int, int));
    126 void	disk_reallymapin __P((struct buf *, struct pte *, int, int));
    127 vaddr_t	vax_map_physmem __P((paddr_t, int));
    128 void	vax_unmap_physmem __P((vaddr_t, int));
    129 void	ioaccess __P((vaddr_t, paddr_t, int));
    130 void	iounaccess __P((vaddr_t, int));
    131 void	findcpu(void);
    132 #ifdef DDB
    133 int	kdbrint __P((int));
    134 #endif
    135 #endif /* _KERNEL */
    136 #endif /* _VAX_CPU_H_ */
    137