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cpu.h revision 1.55 
      1 /*      $NetBSD: cpu.h,v 1.55 2000/12/02 17:08:32 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 #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_info;
     62 
     63 struct	cpu_dep {
     64 	void	(*cpu_steal_pages)(void); /* pmap init before mm is on */
     65 	int	(*cpu_mchk)(caddr_t);   /* Machine check handling */
     66 	void	(*cpu_memerr)(void); /* Memory subsystem errors */
     67 	    /* Autoconfiguration */
     68 	void	(*cpu_conf)(void);
     69 	int	(*cpu_clkread)(time_t);	/* Read cpu clock time */
     70 	void	(*cpu_clkwrite)(void);	/* Write system time to cpu */
     71 	short	cpu_vups;	/* speed of cpu */
     72 	short	cpu_scbsz;	/* (estimated) size of system control block */
     73 	void	(*cpu_halt)(void); /* Cpu dependent halt call */
     74 	void	(*cpu_reboot)(int); /* Cpu dependent reboot call */
     75 	void	(*cpu_clrf)(void); /* Clear cold/warm start flags */
     76 	void	(*cpu_subconf)(struct device *);/*config cpu dep. devs */
     77 	int     cpu_flags;
     78 #if defined(MULTIPROCESSOR)
     79 	/* Kick off slave cpu */
     80 	void	(*cpu_startslave)(struct device *, struct cpu_info *);
     81 #endif
     82 	void	(*cpu_badaddr)(void); /* cpu-specific badaddr() */
     83 };
     84 
     85 #define	CPU_RAISEIPL	1	/* Must raise IPL until intr is handled */
     86 
     87 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */
     88 
     89 struct clockframe {
     90         int     pc;
     91         int     ps;
     92 };
     93 
     94 struct cpu_info {
     95 	/*
     96 	 * Public members.
     97 	 */
     98 	struct schedstate_percpu ci_schedstate; /* scheduler state */
     99 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
    100 	u_long ci_spin_locks;           /* # of spin locks held */
    101 	u_long ci_simple_locks;         /* # of simple locks held */
    102 #endif
    103 
    104 	struct proc *ci_curproc;        /* current owner of the processor */
    105 
    106 	/*
    107 	 * Private members.
    108 	 */
    109 	int ci_want_resched;		/* Should change process */
    110 	struct device *ci_dev;		/* device struct for this cpu */
    111 	long ci_exit;			/* Page to use while exiting */
    112 #if defined(MULTIPROCESSOR)
    113 	struct pcb *ci_pcb;		/* Idle PCB for this CPU */
    114 	vaddr_t ci_istack;		/* Interrupt stack location */
    115 	int ci_flags;			/* See below */
    116 #endif
    117 };
    118 #define	CI_MASTERCPU	1		/* Set if master CPU */
    119 #define	CI_RUNNING	2		/* Set when a slave CPU is running */
    120 
    121 #define	curcpu() ((struct cpu_info *)mfpr(PR_SSP))
    122 #define	curproc	(curcpu()->ci_curproc)
    123 #define	cpu_number() (curcpu()->ci_dev->dv_unit)
    124 #define	need_resched(ci) {(ci)->ci_want_resched++; mtpr(AST_OK,PR_ASTLVL); }
    125 #if defined(MULTIPROCESSOR)
    126 #define	CPU_IS_PRIMARY(ci)	(ci->ci_flags & CI_MASTERCPU)
    127 
    128 extern char tramp;
    129 #endif
    130 
    131 /*
    132  * Notify the current process (p) that it has a signal pending,
    133  * process as soon as possible.
    134  */
    135 
    136 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
    137 
    138 
    139 /*
    140  * Give a profiling tick to the current process when the user profiling
    141  * buffer pages are invalid.  On the hp300, request an ast to send us
    142  * through trap, marking the proc as needing a profiling tick.
    143  */
    144 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
    145 
    146 /*
    147  * This defines the I/O device register space size in pages.
    148  */
    149 #define	IOSPSZ	((64*1024) / VAX_NBPG)	/* 64k == 128 pages */
    150 
    151 struct device;
    152 
    153 /* Some low-level prototypes */
    154 #if defined(MULTIPROCESSOR)
    155 struct	cpu_info *cpu_slavesetup(struct device *);
    156 void	cpu_boot_secondary_processors(void);
    157 #endif
    158 int	badaddr(caddr_t, int);
    159 void	cpu_swapin(struct proc *);
    160 void	dumpconf(void);
    161 void	dumpsys(void);
    162 void	swapconf(void);
    163 void	disk_printtype(int, int);
    164 void	disk_reallymapin(struct buf *, struct pte *, int, int);
    165 vaddr_t	vax_map_physmem(paddr_t, int);
    166 void	vax_unmap_physmem(vaddr_t, int);
    167 void	ioaccess(vaddr_t, paddr_t, int);
    168 void	iounaccess(vaddr_t, int);
    169 void	findcpu(void);
    170 void	child_return(void *);
    171 int	getmajor(void *);
    172 #ifdef DDB
    173 int	kdbrint(int);
    174 #endif
    175 #endif /* _KERNEL */
    176 #ifdef _STANDALONE
    177 void	findcpu(void);
    178 #endif
    179 #endif /* _VAX_CPU_H_ */
    180