1/*	$NetBSD: zsvar.h,v 1.14 2024/01/19 03:59:47 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 1996 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*
33 * Non-exported definitions common to the different attachment
34 * types for the SCC on the Motorola MVME series of computers.
35 */
36
37#include "opt_mvmeconf.h"
38
39/*
40 * The MVME-147 provides a 5 MHz clock to the SCC chips.
41 */
42#define PCLK_147	5000000		/* PCLK pin input clock rate */
43
44/*
45 * The MVME-162 provides a 10 MHz clock to the SCC chips.
46 */
47#define PCLK_162	10000000	/* PCLK pin input clock rate */
48
49/*
50 * SCC should interrupt host at level 4.
51 */
52#define ZSHARD_PRI	4
53
54/*
55 * No delay needed when writing SCC registers.
56 */
57#define ZS_DELAY()
58
59/*
60 * XXX Make cnprobe a little easier.
61 */
62#define NZSC	2
63
64/*
65 * The layout of this is hardware-dependent (padding, order).
66 */
67struct zschan {
68	volatile u_char *zc_csr;	/* ctrl,status, and indirect access */
69	volatile u_char *zc_data;	/* data */
70};
71
72struct zsdevice {
73	/* Yes, they are backwards. */
74	struct	zschan zs_chan_b;
75	struct	zschan zs_chan_a;
76};
77
78/* Globals exported from zs.c */
79extern	u_char zs_init_reg[];
80
81/* Functions exported to ASIC-specific drivers. */
82void	zs_config(struct zsc_softc *, struct zsdevice *, int, int);
83void	zs_cnconfig(int, int, struct zsdevice *, int);
84#ifdef MVME147
85int	zshard_shared(void *);
86#endif
87#if defined(MVME162) || defined(MVME172)
88int	zshard_unshared(void *);
89#endif
90