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Annotation of 43BSDReno/sys/vaxbi/kdbreg.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Chris Torek.
        !             7:  *
        !             8:  * Redistribution is only permitted until one year after the first shipment
        !             9:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
        !            10:  * binary forms are permitted provided that: (1) source distributions retain
        !            11:  * this entire copyright notice and comment, and (2) distributions including
        !            12:  * binaries display the following acknowledgement:  This product includes
        !            13:  * software developed by the University of California, Berkeley and its
        !            14:  * contributors'' in the documentation or other materials provided with the
        !            15:  * distribution and in all advertising materials mentioning features or use
        !            16:  * of this software.  Neither the name of the University nor the names of
        !            17:  * its contributors may be used to endorse or promote products derived from
        !            18:  * this software without specific prior written permission.
        !            19:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            20:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            21:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            22:  *
        !            23:  *     @(#)kdbreg.h    7.3 (Berkeley) 6/28/90
        !            24:  */
        !            25: 
        !            26: /*
        !            27:  * The KDB50 registers are embedded inside the bi interface
        !            28:  * general-purpose registers.
        !            29:  */
        !            30: struct kdb_regs {
        !            31:        struct  biiregs kdb_bi;
        !            32:        short   kdb_xxx;        /* first half of GPR 0 unused */
        !            33:        short   kdb_ip;         /* initialisation and polling */
        !            34:        short   kdb_sa;         /* status & address (r/o half) */
        !            35:        short   kdb_sw;         /* status & address (w/o half) */
        !            36: };
        !            37: 
        !            38: /*
        !            39:  * Bits in KDB status register during initialisation
        !            40:  */
        !            41: #define        KDB_ERR         0x8000  /* error */
        !            42: #define        KDB_STEP4       0x4000  /* step 4 has started */
        !            43: #define        KDB_STEP3       0x2000  /* step 3 has started */
        !            44: #define        KDB_STEP2       0x1000  /* step 2 has started */
        !            45: #define        KDB_STEP1       0x0800  /* step 1 has started */
        !            46: #define        KDB_DI          0x0100  /* controller implements diagnostics */
        !            47: #define        KDB_IE          0x0080  /* interrupt enable */
        !            48: #define        KDB_NCNRMASK    0x003f  /* in STEP1, bits 0-2=NCMDL2, 3-5=NRSPL2 */
        !            49: #define        KDB_IVECMASK    0x007f  /* in STEP2, bits 0-6 are interruptvec / 4 */
        !            50: 
        !            51: /* after initialisation: */
        !            52: #define        KDB_GO          0x0001  /* run */
        !            53: 
        !            54: #define KDBSR_BITS \
        !            55: "\20\20ERR\17STEP4\16STEP3\15STEP2\14STEP1\13oldNV\12oldQB\11DI\10IE\1GO"
        !            56: 
        !            57: /*
        !            58:  * KDB Communications Area.  Note that this structure definition
        !            59:  * requires NRSP and NCMD to be defined already.
        !            60:  */
        !            61: struct kdbca {
        !            62:        short   ca_xxx1;        /* unused */
        !            63:        char    ca_xxx2;        /* unused */
        !            64:        char    ca_bdp;         /* BDP to purge  XXX */
        !            65:        short   ca_cmdint;      /* command ring transition flag */
        !            66:        short   ca_rspint;      /* response ring transition flag */
        !            67:        long    ca_rspdsc[NRSP];/* response descriptors */
        !            68:        long    ca_cmddsc[NCMD];/* command descriptors */
        !            69: };
        !            70: 
        !            71: /*
        !            72:  * Simplified routines (crash dump) use one command and one response.
        !            73:  */
        !            74: struct kdb1ca {
        !            75:        long    ca_xxx;
        !            76:        short   ca_cmdint;
        !            77:        short   ca_rspint;
        !            78:        long    ca_rspdsc;
        !            79:        long    ca_cmddsc;
        !            80: };
        !            81: 
        !            82: /*
        !            83:  * Asserting KDB_MAP in values placed in mscp_seq.seq_buffer tells
        !            84:  * the KDB to use mscp_seq.seq_mapbase as a set of PTEs and seq_buffer
        !            85:  * as an offset value.  Hence we need no mappings; the KDB50 reads
        !            86:  * the hardware page tables directly.  (Without KDB_MAP, seq_bufer
        !            87:  * represents the physical memory address instead, and seq_mapbase is
        !            88:  * unused.)
        !            89:  */
        !            90: #define        KDB_MAP         0x80000000
        !            91: #define        KDB_PHYS        0               /* pseudo flag */
        !            92: 
        !            93: /*
        !            94:  * KDB statistics.
        !            95:  */
        !            96: #define        KS_MAXC 32
        !            97: 
        !            98: struct kdbstats {
        !            99:        int     ks_sys;         /* transfers done from Sysmap */
        !           100:        int     ks_paget;       /* transfers done from Usrptmap */
        !           101:        int     ks_contig;      /* transfers done from contiguous user map */
        !           102:        int     ks_copies;      /* transfers done from pte copies */
        !           103:        int     ks_mapwait;     /* number of out-of-map waits */
        !           104:        int     ks_cmd[KS_MAXC];/* commands started at once */
        !           105:        int     ks_inval;       /* copies due to !PG_V */
        !           106: };

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