FreeBSD/Linux Kernel Cross Reference
sys/dev/bi/kdbreg.h

     /*      $NetBSD: kdbreg.h,v 1.4 2003/08/07 16:30:53 agc Exp $   */
     /*
      * Copyright (c) 1988 Regents of the University of California.
      * All rights reserved.
      *
      * This code is derived from software contributed to Berkeley by
      * Chris Torek.
      *
      * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)kdbreg.h    7.3 (Berkeley) 6/28/90
     */
    
    /*
     * The KDB50 registers are embedded inside the bi interface
     * general-purpose registers.
     */
    #ifdef notdef
    struct  kdb_regs {
            struct  biiregs kdb_bi;
            short   kdb_xxx;        /* first half of GPR 0 unused */
            short   kdb_ip;         /* initialisation and polling */
            short   kdb_sa;         /* status & address (r/o half) */
            short   kdb_sw;         /* status & address (w/o half) */
    };
    #endif
    
    #define KDB_IP  0xf2
    #define KDB_SA  0xf4
    #define KDB_SW  0xf6
    
    #define KDBSR_BITS \
    "\2\20ERR\17STEP4\16STEP3\15STEP2\14STEP1\13oldNV\12oldQB\11DI\10IE\1GO"
    
    /*
     * Asserting KDB_MAP in values placed in mscp_seq.seq_buffer tells
     * the KDB to use mscp_seq.seq_mapbase as a set of PTEs and seq_buffer
     * as an offset value.  Hence we need no mappings; the KDB50 reads
     * the hardware page tables directly.  (Without KDB_MAP, seq_bufer
     * represents the physical memory address instead, and seq_mapbase is
     * unused.)
     */
    #define KDB_MAP         0x80000000
    #define KDB_PHYS        0               /* pseudo flag */

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