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Annotation of 43BSDTahoe/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 and use in source and binary forms are permitted
        !             9:  * provided that the above copyright notice and this paragraph are
        !            10:  * duplicated in all such forms and that any documentation,
        !            11:  * advertising materials, and other materials related to such
        !            12:  * distribution and use acknowledge that the software was developed
        !            13:  * by the University of California, Berkeley.  The name of the
        !            14:  * University may not be used to endorse or promote products derived
        !            15:  * from this software without specific prior written permission.
        !            16:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            17:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            18:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            19:  *
        !            20:  *     @(#)kdbreg.h    7.2 (Berkeley) 7/9/88
        !            21:  */
        !            22: 
        !            23: /*
        !            24:  * The KDB50 registers are embedded inside the bi interface
        !            25:  * general-purpose registers.
        !            26:  */
        !            27: struct kdb_regs {
        !            28:        struct  biiregs kdb_bi;
        !            29:        short   kdb_xxx;        /* first half of GPR 0 unused */
        !            30:        short   kdb_ip;         /* initialisation and polling */
        !            31:        short   kdb_sa;         /* status & address (r/o half) */
        !            32:        short   kdb_sw;         /* status & address (w/o half) */
        !            33: };
        !            34: 
        !            35: /*
        !            36:  * Bits in KDB status register during initialisation
        !            37:  */
        !            38: #define        KDB_ERR         0x8000  /* error */
        !            39: #define        KDB_STEP4       0x4000  /* step 4 has started */
        !            40: #define        KDB_STEP3       0x2000  /* step 3 has started */
        !            41: #define        KDB_STEP2       0x1000  /* step 2 has started */
        !            42: #define        KDB_STEP1       0x0800  /* step 1 has started */
        !            43: #define        KDB_DI          0x0100  /* controller implements diagnostics */
        !            44: #define        KDB_IE          0x0080  /* interrupt enable */
        !            45: #define        KDB_NCNRMASK    0x003f  /* in STEP1, bits 0-2=NCMDL2, 3-5=NRSPL2 */
        !            46: #define        KDB_IVECMASK    0x007f  /* in STEP2, bits 0-6 are interruptvec / 4 */
        !            47: 
        !            48: /* after initialisation: */
        !            49: #define        KDB_GO          0x0001  /* run */
        !            50: 
        !            51: #define KDBSR_BITS \
        !            52: "\20\20ERR\17STEP4\16STEP3\15STEP2\14STEP1\13oldNV\12oldQB\11DI\10IE\1GO"
        !            53: 
        !            54: /*
        !            55:  * KDB Communications Area.  Note that this structure definition
        !            56:  * requires NRSP and NCMD to be defined already.
        !            57:  */
        !            58: struct kdbca {
        !            59:        short   ca_xxx1;        /* unused */
        !            60:        char    ca_xxx2;        /* unused */
        !            61:        char    ca_bdp;         /* BDP to purge  XXX */
        !            62:        short   ca_cmdint;      /* command ring transition flag */
        !            63:        short   ca_rspint;      /* response ring transition flag */
        !            64:        long    ca_rspdsc[NRSP];/* response descriptors */
        !            65:        long    ca_cmddsc[NCMD];/* command descriptors */
        !            66: };
        !            67: 
        !            68: /*
        !            69:  * Simplified routines (crash dump) use one command and one response.
        !            70:  */
        !            71: struct kdb1ca {
        !            72:        long    ca_xxx;
        !            73:        short   ca_cmdint;
        !            74:        short   ca_rspint;
        !            75:        long    ca_rspdsc;
        !            76:        long    ca_cmddsc;
        !            77: };
        !            78: 
        !            79: /*
        !            80:  * Asserting KDB_MAP in values placed in mscp_seq.seq_buffer tells
        !            81:  * the KDB to use mscp_seq.seq_mapbase as a set of PTEs and seq_buffer
        !            82:  * as an offset value.  Hence we need no mappings; the KDB50 reads
        !            83:  * the hardware page tables directly.  (Without KDB_MAP, seq_bufer
        !            84:  * represents the physical memory address instead, and seq_mapbase is
        !            85:  * unused.)
        !            86:  */
        !            87: #define        KDB_MAP         0x80000000
        !            88: #define        KDB_PHYS        0               /* pseudo flag */
        !            89: 
        !            90: /*
        !            91:  * KDB statistics.
        !            92:  */
        !            93: #define        KS_MAXC 32
        !            94: 
        !            95: struct kdbstats {
        !            96:        int     ks_sys;         /* transfers done from Sysmap */
        !            97:        int     ks_paget;       /* transfers done from Usrptmap */
        !            98:        int     ks_contig;      /* transfers done from contiguous user map */
        !            99:        int     ks_copies;      /* transfers done from pte copies */
        !           100:        int     ks_mapwait;     /* number of out-of-map waits */
        !           101:        int     ks_cmd[KS_MAXC];/* commands started at once */
        !           102:        int     ks_inval;       /* copies due to !PG_V */
        !           103: };

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