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cpu.h revision 1.37 
      1 /*      $NetBSD: cpu.h,v 1.37 1999/05/23 22:56:54 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 #include <machine/psl.h>
     42 
     43 #define enablertclock()
     44 #define	cpu_wait(p)
     45 #define	cpu_swapout(p)
     46 
     47 /*
     48  * All cpu-dependent info is kept in this struct. Pointer to the
     49  * struct for the current cpu is set up in locore.c.
     50  */
     51 struct	cpu_dep {
     52 	void	(*cpu_steal_pages) __P((void)); /* pmap init before mm is on */
     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 	short	cpu_vups;	/* speed of cpu */
     60 	short	cpu_scbsz;	/* (estimated) size of system control block */
     61 	void	(*cpu_halt) __P((void)); /* Cpu dependent halt call */
     62 	void	(*cpu_reboot) __P((int)); /* Cpu dependent reboot call */
     63 	void	(*cpu_clrf) __P((void)); /* Clear cold/warm start flags */
     64 	void	(*cpu_subconf) __P((struct device *));/*config cpu dep. devs */
     65 };
     66 
     67 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */
     68 
     69 struct clockframe {
     70         int     pc;
     71         int     ps;
     72 };
     73 
     74 extern struct device *booted_from;
     75 extern int cold;
     76 extern int mastercpu;
     77 extern int bootdev;
     78 
     79 #define	setsoftnet()	mtpr(12,PR_SIRR)
     80 #define setsoftclock()	mtpr(8,PR_SIRR)
     81 #define	todr()		mfpr(PR_TODR)
     82 /*
     83  * Preempt the current process if in interrupt from user mode,
     84  * or after the current trap/syscall if in system mode.
     85  */
     86 
     87 #define need_resched(){ \
     88 	want_resched++; \
     89 	mtpr(AST_OK,PR_ASTLVL); \
     90 	}
     91 
     92 /*
     93  * Notify the current process (p) that it has a signal pending,
     94  * process as soon as possible.
     95  */
     96 
     97 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
     98 
     99 extern	int     want_resched;   /* resched() was called */
    100 
    101 /*
    102  * Give a profiling tick to the current process when the user profiling
    103  * buffer pages are invalid.  On the hp300, request an ast to send us
    104  * through trap, marking the proc as needing a profiling tick.
    105  */
    106 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
    107 
    108 /*
    109  * This defines the I/O device register space size in pages.
    110  */
    111 #define	IOSPSZ	((64*1024) / VAX_NBPG)	/* 64k == 128 pages */
    112 
    113 struct device;
    114 
    115 /* Some low-level prototypes */
    116 int	badaddr __P((caddr_t, int));
    117 void	cpu_swapin __P((struct proc *));
    118 int	hp_getdev __P((int, int, struct device **));
    119 int	ra_getdev __P((int, int, int, struct device **));
    120 void	dumpconf __P((void));
    121 void	dumpsys __P((void));
    122 void	swapconf __P((void));
    123 void	disk_printtype __P((int, int));
    124 void	disk_reallymapin __P((struct buf *, struct pte *, int, int));
    125 vaddr_t	vax_map_physmem __P((paddr_t, int));
    126 void	vax_unmap_physmem __P((vaddr_t, int));
    127 void	ioaccess __P((vaddr_t, paddr_t, int));
    128 void	iounaccess __P((vaddr_t, int));
    129 void	findcpu(void);
    130 #ifdef DDB
    131 int	kdbrint __P((int));
    132 #endif
    133 #endif /* _KERNEL */
    134