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      1 /*	$NetBSD: scb.h,v 1.15 2022/04/10 09:50:45 andvar 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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #ifndef _VAX_SCB_H
     29 #define	_VAX_SCB_H
     30 
     31 #include <sys/evcnt.h>
     32 
     33 /*
     34  * Definition of the System Control Block. More about it can be
     35  * found in the Vax Architecture Reference Manual, section 6.6.
     36  */
     37 struct scb {
     38 	void	*scb_unused;	/* First unused vector */
     39 	void	*scb_mcheck;
     40 	void	*scb_kspinv;
     41 	void	*scb_powfail;
     42 	void	*scb_privinst;	/* 10 Privileged Instruction fault */
     43 	void	*scb_xfcinst;
     44 	void	*scb_resop;
     45 	void	*scb_resad;
     46 	void	*scb_accessv;	/* 20 Access Control violation fault */
     47 	void	*scb_transinv;
     48 	void	*scb_trace;
     49 	void	*scb_breakp;
     50 	void	*scb_compat;	/* 30 Compatibility instruction fault */
     51 	void	*scb_arith;
     52 	void	*scb_unused1;
     53 	void	*scb_unused2;
     54 	void	*scb_chmk;	/* 40 CHMK */
     55 	void	*scb_chme;
     56 	void	*scb_chms;
     57 	void	*scb_chmu;
     58 	void	*scb_sbisilo;	/* 50 SBI Silo compare */
     59 	void	*scb_cmrd;
     60 	void	*scb_sbialert;
     61 	void	*scb_sbifault;
     62 	void	*scb_memwtimo;	/* 60 Memory write timeout */
     63 	void	*scb_unused3;
     64 	void	*scb_unused4;
     65 	void	*scb_unused5;
     66 	void	*scb_unused6;	/* 70 unused */
     67 	void	*scb_unused7;
     68 	void	*scb_unused8;
     69 	void	*scb_unused9;
     70 	void	*scb_unused10;	/* 80 unused */
     71 	void	*scb_softint1;
     72 	void	*scb_softint2;
     73 	void	*scb_softint3;
     74 	void	*scb_softint4;	/* 90 Software interrupt level 4 */
     75 	void	*scb_softint5;
     76 	void	*scb_softint6;
     77 	void	*scb_softint7;
     78 	void	*scb_softint8;	/* A0 Software interrupt level 8 */
     79 	void	*scb_softint9;
     80 	void	*scb_softinta;
     81 	void	*scb_softintb;
     82 	void	*scb_softintc;	/* B0 Software interrupt level C */
     83 	void	*scb_softintd;
     84 	void	*scb_softinte;
     85 	void	*scb_softintf;
     86 	void	*scb_timer;	/* C0 Interval timer */
     87 	void	*scb_unused11;
     88 	void	*scb_unused12;
     89 	void	*scb_unused13;
     90 	void	*scb_unused14;	/* D0 Unused */
     91 	void	*scb_unused15;
     92 	void	*scb_unused16;
     93 	void	*scb_unused17;
     94 	void	*scb_unused18;	/* E0 Unused */
     95 	void	*scb_unused19;
     96 	void	*scb_unused20;
     97 	void	*scb_unused21;
     98 	void	*scb_csrint;
     99 	void	*scb_cstint;	/* F0 Console storage transmit interrupt */
    100 	void	*scb_ctrint;
    101 	void	*scb_cttint;
    102 	struct	ivec_dsp *scb_nexvec[4][16];	/* Nexus interrupt vectors */
    103 };
    104 
    105 #define	SCB_KSTACK	0
    106 #define	SCB_ISTACK	1
    107 
    108 #define vecnum(bus, ipl, tr) (256+(ipl-0x14)*64+tr*4+bus*256)
    109 
    110 /*
    111  * This struct is used when setting up interrupt vectors dynamically.
    112  * It put a opaque 32 bit quantity on the stack and also has a placeholder
    113  * for evcnt structure.
    114  */
    115 struct ivec_dsp {
    116 	char	pushr; 		/* pushr */
    117 	char	pushrarg;	/* $0x3f */
    118 	char	jsb;
    119 	char	mode;
    120 	long	displacement;
    121 	void	(*hoppaddr)(void *);
    122 	void	*pushlarg;
    123 	struct	evcnt *ev;
    124 };
    125 
    126 #ifdef _KERNEL
    127 extern	const struct ivec_dsp idsptch;
    128 extern	struct scb *scb;
    129 extern	struct ivec_dsp *scb_vec;
    130 extern	struct evcnt devipl_intrcnts[4];	/* IPL 2[0123] */
    131 
    132 paddr_t scb_init (paddr_t);
    133 int scb_vecref (int *, int *);
    134 void scb_fake (int, int);
    135 void scb_vecalloc (int, void(*)(void *), void *, int, struct evcnt *);
    136 #endif /* _KERNEL */
    137 
    138 #endif /* _VAX_SCB_H */
    139