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cpu.h revision 1.43 
      1 /*      $NetBSD: cpu.h,v 1.43 2000/04/22 08:19:49 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 
     36 #if defined(_KERNEL) && !defined(_LKM)
     37 #include "opt_multiprocessor.h"
     38 #endif
     39 
     40 
     41 #ifdef _KERNEL
     42 
     43 #include <sys/cdefs.h>
     44 #include <sys/device.h>
     45 #include <sys/lock.h>
     46 
     47 #include <machine/mtpr.h>
     48 #include <machine/pcb.h>
     49 #include <machine/uvax.h>
     50 #include <machine/psl.h>
     51 
     52 #define enablertclock()
     53 #define	cpu_wait(p)
     54 #define	cpu_swapout(p)
     55 
     56 /*
     57  * All cpu-dependent info is kept in this struct. Pointer to the
     58  * struct for the current cpu is set up in locore.c.
     59  */
     60 struct	cpu_dep {
     61 	void	(*cpu_steal_pages) __P((void)); /* pmap init before mm is on */
     62 	int	(*cpu_mchk) __P((caddr_t));   /* Machine check handling */
     63 	void	(*cpu_memerr) __P((void)); /* Memory subsystem errors */
     64 	    /* Autoconfiguration */
     65 	void	(*cpu_conf) __P((void));
     66 	int	(*cpu_clkread) __P((time_t));	/* Read cpu clock time */
     67 	void	(*cpu_clkwrite) __P((void));	/* Write system time to cpu */
     68 	short	cpu_vups;	/* speed of cpu */
     69 	short	cpu_scbsz;	/* (estimated) size of system control block */
     70 	void	(*cpu_halt) __P((void)); /* Cpu dependent halt call */
     71 	void	(*cpu_reboot) __P((int)); /* Cpu dependent reboot call */
     72 	void	(*cpu_clrf) __P((void)); /* Clear cold/warm start flags */
     73 	void	(*cpu_subconf) __P((struct device *));/*config cpu dep. devs */
     74 	int     cpu_flags;
     75 };
     76 
     77 #define	CPU_RAISEIPL	1	/* Must raise IPL until intr is handled */
     78 
     79 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */
     80 
     81 struct clockframe {
     82         int     pc;
     83         int     ps;
     84 };
     85 
     86 #if defined(MULTIPROCESSOR)
     87 
     88 struct cpu_info {
     89 	/*
     90 	 * Public members.
     91 	 */
     92 	struct proc *ci_curproc;        /* current owner of the processor */
     93 	struct simplelock ci_slock;     /* lock on this data structure */
     94 	cpuid_t ci_cpuid;               /* our CPU ID */
     95 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
     96 	u_long ci_spin_locks;           /* # of spin locks held */
     97 	u_long ci_simple_locks;         /* # of simple locks held */
     98 #endif
     99 	/*
    100 	 * Private members.
    101 	 */
    102 	int	ci_want_resched;	/* Should change process */
    103 };
    104 
    105 /*
    106  * VAX internal CPU numbering is not sequential; therefore have a separate
    107  * function call that returns the cpu_info struct for this CPU.
    108  *
    109  * For the master CPU (or only) this struct is allocated early in startup;
    110  * for other CPUs it is allocated when the CPU is found.
    111  */
    112 extern	int (*vax_cpu_number)(void);
    113 extern	struct cpu_info *(*vax_curcpu)(void);
    114 
    115 #define	cpu_number()		(*vax_cpu_number)()
    116 #define	curcpu()		(*vax_curcpu)()
    117 #define	need_resched() {curcpu()->ci_want_resched++; mtpr(AST_OK,PR_ASTLVL); }
    118 #define	cpu_boot_secondary_processors()
    119 
    120 #else /* MULTIPROCESSOR */
    121 
    122 extern	int     want_resched;   /* resched() was called */
    123 
    124 #define	cpu_number()			0
    125 #define need_resched() { want_resched++; mtpr(AST_OK,PR_ASTLVL); }
    126 
    127 #endif /* MULTIPROCESSOR */
    128 
    129 extern struct device *booted_from;
    130 extern int mastercpu;
    131 extern int bootdev;
    132 
    133 #define	setsoftnet()	mtpr(12,PR_SIRR)
    134 #define setsoftclock()	mtpr(8,PR_SIRR)
    135 #define	todr()		mfpr(PR_TODR)
    136 
    137 /*
    138  * Notify the current process (p) that it has a signal pending,
    139  * process as soon as possible.
    140  */
    141 
    142 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
    143 
    144 
    145 /*
    146  * Give a profiling tick to the current process when the user profiling
    147  * buffer pages are invalid.  On the hp300, request an ast to send us
    148  * through trap, marking the proc as needing a profiling tick.
    149  */
    150 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
    151 
    152 /*
    153  * This defines the I/O device register space size in pages.
    154  */
    155 #define	IOSPSZ	((64*1024) / VAX_NBPG)	/* 64k == 128 pages */
    156 
    157 struct device;
    158 
    159 /* Some low-level prototypes */
    160 int	badaddr __P((caddr_t, int));
    161 void	cpu_swapin __P((struct proc *));
    162 int	hp_getdev __P((int, int, struct device **));
    163 int	ra_getdev __P((int, int, int, struct device **));
    164 void	dumpconf __P((void));
    165 void	dumpsys __P((void));
    166 void	swapconf __P((void));
    167 void	disk_printtype __P((int, int));
    168 void	disk_reallymapin __P((struct buf *, struct pte *, int, int));
    169 vaddr_t	vax_map_physmem __P((paddr_t, int));
    170 void	vax_unmap_physmem __P((vaddr_t, int));
    171 void	ioaccess __P((vaddr_t, paddr_t, int));
    172 void	iounaccess __P((vaddr_t, int));
    173 void	findcpu(void);
    174 #ifdef DDB
    175 int	kdbrint __P((int));
    176 #endif
    177 #endif /* _KERNEL */
    178 #endif /* _VAX_CPU_H_ */
    179