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Annotation of Net2/arch/vax/bi/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, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  * 3. All advertising materials mentioning features or use of this software
        !            17:  *    must display the following acknowledgement:
        !            18:  *     This product includes software developed by the University of
        !            19:  *     California, Berkeley and its contributors.
        !            20:  * 4. Neither the name of the University nor the names of its contributors
        !            21:  *    may be used to endorse or promote products derived from this software
        !            22:  *    without specific prior written permission.
        !            23:  *
        !            24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            34:  * SUCH DAMAGE.
        !            35:  *
        !            36:  *     @(#)kdbreg.h    7.3 (Berkeley) 6/28/90
        !            37:  */
        !            38: 
        !            39: /*
        !            40:  * The KDB50 registers are embedded inside the bi interface
        !            41:  * general-purpose registers.
        !            42:  */
        !            43: struct kdb_regs {
        !            44:        struct  biiregs kdb_bi;
        !            45:        short   kdb_xxx;        /* first half of GPR 0 unused */
        !            46:        short   kdb_ip;         /* initialisation and polling */
        !            47:        short   kdb_sa;         /* status & address (r/o half) */
        !            48:        short   kdb_sw;         /* status & address (w/o half) */
        !            49: };
        !            50: 
        !            51: /*
        !            52:  * Bits in KDB status register during initialisation
        !            53:  */
        !            54: #define        KDB_ERR         0x8000  /* error */
        !            55: #define        KDB_STEP4       0x4000  /* step 4 has started */
        !            56: #define        KDB_STEP3       0x2000  /* step 3 has started */
        !            57: #define        KDB_STEP2       0x1000  /* step 2 has started */
        !            58: #define        KDB_STEP1       0x0800  /* step 1 has started */
        !            59: #define        KDB_DI          0x0100  /* controller implements diagnostics */
        !            60: #define        KDB_IE          0x0080  /* interrupt enable */
        !            61: #define        KDB_NCNRMASK    0x003f  /* in STEP1, bits 0-2=NCMDL2, 3-5=NRSPL2 */
        !            62: #define        KDB_IVECMASK    0x007f  /* in STEP2, bits 0-6 are interruptvec / 4 */
        !            63: 
        !            64: /* after initialisation: */
        !            65: #define        KDB_GO          0x0001  /* run */
        !            66: 
        !            67: #define KDBSR_BITS \
        !            68: "\20\20ERR\17STEP4\16STEP3\15STEP2\14STEP1\13oldNV\12oldQB\11DI\10IE\1GO"
        !            69: 
        !            70: /*
        !            71:  * KDB Communications Area.  Note that this structure definition
        !            72:  * requires NRSP and NCMD to be defined already.
        !            73:  */
        !            74: struct kdbca {
        !            75:        short   ca_xxx1;        /* unused */
        !            76:        char    ca_xxx2;        /* unused */
        !            77:        char    ca_bdp;         /* BDP to purge  XXX */
        !            78:        short   ca_cmdint;      /* command ring transition flag */
        !            79:        short   ca_rspint;      /* response ring transition flag */
        !            80:        long    ca_rspdsc[NRSP];/* response descriptors */
        !            81:        long    ca_cmddsc[NCMD];/* command descriptors */
        !            82: };
        !            83: 
        !            84: /*
        !            85:  * Simplified routines (crash dump) use one command and one response.
        !            86:  */
        !            87: struct kdb1ca {
        !            88:        long    ca_xxx;
        !            89:        short   ca_cmdint;
        !            90:        short   ca_rspint;
        !            91:        long    ca_rspdsc;
        !            92:        long    ca_cmddsc;
        !            93: };
        !            94: 
        !            95: /*
        !            96:  * Asserting KDB_MAP in values placed in mscp_seq.seq_buffer tells
        !            97:  * the KDB to use mscp_seq.seq_mapbase as a set of PTEs and seq_buffer
        !            98:  * as an offset value.  Hence we need no mappings; the KDB50 reads
        !            99:  * the hardware page tables directly.  (Without KDB_MAP, seq_bufer
        !           100:  * represents the physical memory address instead, and seq_mapbase is
        !           101:  * unused.)
        !           102:  */
        !           103: #define        KDB_MAP         0x80000000
        !           104: #define        KDB_PHYS        0               /* pseudo flag */
        !           105: 
        !           106: /*
        !           107:  * KDB statistics.
        !           108:  */
        !           109: #define        KS_MAXC 32
        !           110: 
        !           111: struct kdbstats {
        !           112:        int     ks_sys;         /* transfers done from Sysmap */
        !           113:        int     ks_paget;       /* transfers done from Usrptmap */
        !           114:        int     ks_contig;      /* transfers done from contiguous user map */
        !           115:        int     ks_copies;      /* transfers done from pte copies */
        !           116:        int     ks_mapwait;     /* number of out-of-map waits */
        !           117:        int     ks_cmd[KS_MAXC];/* commands started at once */
        !           118:        int     ks_inval;       /* copies due to !PG_V */
        !           119: };

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