1/*	$NetBSD: kdbreg.h,v 1.6 2021/07/24 21:31:36 andvar Exp $	*/
2/*
3 * Copyright (c) 1988 Regents of the University of California.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Chris Torek.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	@(#)kdbreg.h	7.3 (Berkeley) 6/28/90
34 */
35
36/*
37 * The KDB50 registers are embedded inside the bi interface
38 * general-purpose registers.
39 */
40#ifdef notdef
41struct	kdb_regs {
42	struct	biiregs kdb_bi;
43	short	kdb_xxx;	/* first half of GPR 0 unused */
44	short	kdb_ip;		/* initialisation and polling */
45	short	kdb_sa;		/* status & address (r/o half) */
46	short	kdb_sw;		/* status & address (w/o half) */
47};
48#endif
49
50#define	KDB_IP	0xf2
51#define	KDB_SA	0xf4
52#define	KDB_SW	0xf6
53
54#define KDBSR_BITS \
55"\20\20ERR\17STEP4\16STEP3\15STEP2\14STEP1\13oldNV\12oldQB\11DI\10IE\1GO"
56
57/*
58 * Asserting KDB_MAP in values placed in mscp_seq.seq_buffer tells
59 * the KDB to use mscp_seq.seq_mapbase as a set of PTEs and seq_buffer
60 * as an offset value.  Hence we need no mappings; the KDB50 reads
61 * the hardware page tables directly.  (Without KDB_MAP, seq_buffer
62 * represents the physical memory address instead, and seq_mapbase is
63 * unused.)
64 */
65#define	KDB_MAP		0x80000000
66#define	KDB_PHYS	0		/* pseudo flag */
67