Home | History | Annotate | Line # | Download | only in include
cpu.h revision 1.46 
      1 /*      $NetBSD: cpu.h,v 1.46 2000/05/27 03:23:22 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 #if defined(MULTIPROCESSOR)
     98 	struct proc *ci_curproc;        /* current owner of the processor */
     99 #endif
    100 
    101 	/*
    102 	 * Private members.
    103 	 */
    104 #if defined(MULTIPROCESSOR)
    105 	int	ci_want_resched;	/* Should change process */
    106 #endif
    107 };
    108 
    109 #if defined(MULTIPROCESSOR)
    110 
    111 /*
    112  * VAX internal CPU numbering is not sequential; therefore have a separate
    113  * function call that returns the cpu_info struct for this CPU.
    114  *
    115  * For the master CPU (or only) this struct is allocated early in startup;
    116  * for other CPUs it is allocated when the CPU is found.
    117  */
    118 extern	int (*vax_cpu_number)(void);
    119 extern	struct cpu_info *(*vax_curcpu)(void);
    120 
    121 #define	cpu_number()		(*vax_cpu_number)()
    122 #define	curcpu()		(*vax_curcpu)()
    123 #define	need_resched() {curcpu()->ci_want_resched++; mtpr(AST_OK,PR_ASTLVL); }
    124 #define	cpu_boot_secondary_processors()
    125 
    126 #else /* MULTIPROCESSOR */
    127 
    128 extern	int     want_resched;   /* resched() was called */
    129 extern	struct cpu_info cpu_info_store;
    130 
    131 #define	curcpu()		(&cpu_info_store)
    132 #define	cpu_number()		0
    133 #define need_resched() { want_resched++; mtpr(AST_OK,PR_ASTLVL); }
    134 
    135 #endif /* MULTIPROCESSOR */
    136 
    137 extern struct device *booted_from;
    138 extern int mastercpu;
    139 extern int bootdev;
    140 
    141 #define	setsoftnet()	mtpr(12,PR_SIRR)
    142 #define setsoftclock()	mtpr(8,PR_SIRR)
    143 #define	todr()		mfpr(PR_TODR)
    144 
    145 /*
    146  * Notify the current process (p) that it has a signal pending,
    147  * process as soon as possible.
    148  */
    149 
    150 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
    151 
    152 
    153 /*
    154  * Give a profiling tick to the current process when the user profiling
    155  * buffer pages are invalid.  On the hp300, request an ast to send us
    156  * through trap, marking the proc as needing a profiling tick.
    157  */
    158 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
    159 
    160 /*
    161  * This defines the I/O device register space size in pages.
    162  */
    163 #define	IOSPSZ	((64*1024) / VAX_NBPG)	/* 64k == 128 pages */
    164 
    165 struct device;
    166 
    167 /* Some low-level prototypes */
    168 int	badaddr __P((caddr_t, int));
    169 void	cpu_swapin __P((struct proc *));
    170 int	hp_getdev __P((int, int, struct device **));
    171 int	ra_getdev __P((int, int, int, struct device **));
    172 void	dumpconf __P((void));
    173 void	dumpsys __P((void));
    174 void	swapconf __P((void));
    175 void	disk_printtype __P((int, int));
    176 void	disk_reallymapin __P((struct buf *, struct pte *, int, int));
    177 vaddr_t	vax_map_physmem __P((paddr_t, int));
    178 void	vax_unmap_physmem __P((vaddr_t, int));
    179 void	ioaccess __P((vaddr_t, paddr_t, int));
    180 void	iounaccess __P((vaddr_t, int));
    181 void	findcpu(void);
    182 #ifdef DDB
    183 int	kdbrint __P((int));
    184 #endif
    185 #endif /* _KERNEL */
    186 #ifdef _STANDALONE
    187 void	findcpu(void);
    188 #endif
    189 #endif /* _VAX_CPU_H_ */
    190