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cpu.h revision 1.49 
      1 /*      $NetBSD: cpu.h,v 1.49 2000/05/31 23:55:52 matt 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 
     36 #if defined(_KERNEL) && !defined(_LKM)
     37 #include "opt_multiprocessor.h"
     38 #include "opt_lockdebug.h"
     39 #endif
     40 
     41 #ifdef _KERNEL
     42 
     43 #include <sys/cdefs.h>
     44 #include <sys/device.h>
     45 #include <sys/lock.h>
     46 #include <sys/sched.h>
     47 
     48 #include <machine/mtpr.h>
     49 #include <machine/pcb.h>
     50 #include <machine/uvax.h>
     51 #include <machine/psl.h>
     52 
     53 #define enablertclock()
     54 #define	cpu_wait(p)
     55 #define	cpu_swapout(p)
     56 
     57 /*
     58  * All cpu-dependent info is kept in this struct. Pointer to the
     59  * struct for the current cpu is set up in locore.c.
     60  */
     61 struct	cpu_dep {
     62 	void	(*cpu_steal_pages) __P((void)); /* pmap init before mm is on */
     63 	int	(*cpu_mchk) __P((caddr_t));   /* Machine check handling */
     64 	void	(*cpu_memerr) __P((void)); /* Memory subsystem errors */
     65 	    /* Autoconfiguration */
     66 	void	(*cpu_conf) __P((void));
     67 	int	(*cpu_clkread) __P((time_t));	/* Read cpu clock time */
     68 	void	(*cpu_clkwrite) __P((void));	/* Write system time to cpu */
     69 	short	cpu_vups;	/* speed of cpu */
     70 	short	cpu_scbsz;	/* (estimated) size of system control block */
     71 	void	(*cpu_halt) __P((void)); /* Cpu dependent halt call */
     72 	void	(*cpu_reboot) __P((int)); /* Cpu dependent reboot call */
     73 	void	(*cpu_clrf) __P((void)); /* Clear cold/warm start flags */
     74 	void	(*cpu_subconf) __P((struct device *));/*config cpu dep. devs */
     75 	int     cpu_flags;
     76 };
     77 
     78 #define	CPU_RAISEIPL	1	/* Must raise IPL until intr is handled */
     79 
     80 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */
     81 
     82 struct clockframe {
     83         int     pc;
     84         int     ps;
     85 };
     86 
     87 struct cpu_info {
     88 	/*
     89 	 * Public members.
     90 	 */
     91 	struct schedstate_percpu ci_schedstate; /* scheduler state */
     92 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
     93 	u_long ci_spin_locks;           /* # of spin locks held */
     94 	u_long ci_simple_locks;         /* # of simple locks held */
     95 #endif
     96 
     97 	struct proc *ci_curproc;        /* current owner of the processor */
     98 
     99 	/*
    100 	 * Private members.
    101 	 */
    102 	int ci_want_resched;		/* Should change process */
    103 	int ci_cpunumber;		/* Some numeric identifier */
    104 	long ci_exit;			/* Page to use while exiting */
    105 };
    106 
    107 #define	curcpu() ((struct cpu_info *)mfpr(PR_SSP))
    108 #define	curproc	(curcpu()->ci_curproc)
    109 #define	cpu_number() (curcpu()->ci_cpunumber)
    110 #define	need_resched() {curcpu()->ci_want_resched++; mtpr(AST_OK,PR_ASTLVL); }
    111 
    112 extern int mastercpu;
    113 
    114 #define	setsoftnet()	mtpr(12,PR_SIRR)
    115 #define setsoftclock()	mtpr(8,PR_SIRR)
    116 
    117 /*
    118  * Notify the current process (p) that it has a signal pending,
    119  * process as soon as possible.
    120  */
    121 
    122 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
    123 
    124 
    125 /*
    126  * Give a profiling tick to the current process when the user profiling
    127  * buffer pages are invalid.  On the hp300, request an ast to send us
    128  * through trap, marking the proc as needing a profiling tick.
    129  */
    130 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
    131 
    132 /*
    133  * This defines the I/O device register space size in pages.
    134  */
    135 #define	IOSPSZ	((64*1024) / VAX_NBPG)	/* 64k == 128 pages */
    136 
    137 struct device;
    138 
    139 /* Some low-level prototypes */
    140 int	badaddr __P((caddr_t, int));
    141 void	cpu_swapin __P((struct proc *));
    142 int	hp_getdev __P((int, int, struct device **));
    143 int	ra_getdev __P((int, int, int, struct device **));
    144 void	dumpconf __P((void));
    145 void	dumpsys __P((void));
    146 void	swapconf __P((void));
    147 void	disk_printtype __P((int, int));
    148 void	disk_reallymapin __P((struct buf *, struct pte *, int, int));
    149 vaddr_t	vax_map_physmem __P((paddr_t, int));
    150 void	vax_unmap_physmem __P((vaddr_t, int));
    151 void	ioaccess __P((vaddr_t, paddr_t, int));
    152 void	iounaccess __P((vaddr_t, int));
    153 void	findcpu(void);
    154 void	child_return(void *);
    155 #ifdef DDB
    156 int	kdbrint __P((int));
    157 #endif
    158 #endif /* _KERNEL */
    159 #ifdef _STANDALONE
    160 void	findcpu(void);
    161 #endif
    162 #endif /* _VAX_CPU_H_ */
    163