zsvar.h revision 1.11.10.1 1 /* $NetBSD: zsvar.h,v 1.11.10.1 2008/05/16 02:22:53 yamt 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 definitons common to the different attachment
34 * types for the SCC on the Motorola MVME series of computers.
35 */
36
37 /*
38 * The MVME-147 provides a 5 MHz clock to the SCC chips.
39 */
40 #define PCLK_147 5000000 /* PCLK pin input clock rate */
41
42 /*
43 * The MVME-162 provides a 10 MHz clock to the SCC chips.
44 */
45 #define PCLK_162 10000000 /* PCLK pin input clock rate */
46
47 /*
48 * SCC should interrupt host at level 4.
49 */
50 #define ZSHARD_PRI 4
51
52 /*
53 * No delay needed when writing SCC registers.
54 */
55 #define ZS_DELAY()
56
57 /*
58 * XXX Make cnprobe a little easier.
59 */
60 #define NZSC 2
61
62 /*
63 * The layout of this is hardware-dependent (padding, order).
64 */
65 struct zschan {
66 volatile u_char *zc_csr; /* ctrl,status, and indirect access */
67 volatile u_char *zc_data; /* data */
68 };
69
70 struct zsdevice {
71 /* Yes, they are backwards. */
72 struct zschan zs_chan_b;
73 struct zschan zs_chan_a;
74 };
75
76 /* Globals exported from zs.c */
77 extern u_char zs_init_reg[];
78
79 /* Functions exported to ASIC-specific drivers. */
80 void zs_config(struct zsc_softc *, struct zsdevice *, int, int);
81 void zs_cnconfig(int, int, struct zsdevice *, int);
82 #ifdef MVME147
83 int zshard_shared(void *);
84 #endif
85 #if defined(MVME162) || defined(MVME172)
86 int zshard_unshared(void *);
87 #endif
88