z8530var.h revision 1.2 
1/*	$NetBSD: z8530var.h,v 1.2 1998/06/01 19:31:05 tsubai Exp $	*/
2
3/*
4 * Copyright (c) 1994 Gordon W. Ross
5 * Copyright (c) 1992, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This software was developed by the Computer Systems Engineering group
9 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
10 * contributed to Berkeley.
11 *
12 * All advertising materials mentioning features or use of this software
13 * must display the following acknowledgement:
14 *	This product includes software developed by the University of
15 *	California, Lawrence Berkeley Laboratory.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
19 * are met:
20 * 1. Redistributions of source code must retain the above copyright
21 *    notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 *    notice, this list of conditions and the following disclaimer in the
24 *    documentation and/or other materials provided with the distribution.
25 * 3. All advertising materials mentioning features or use of this software
26 *    must display the following acknowledgement:
27 *	This product includes software developed by the University of
28 *	California, Berkeley and its contributors.
29 * 4. Neither the name of the University nor the names of its contributors
30 *    may be used to endorse or promote products derived from this software
31 *    without specific prior written permission.
32 *
33 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
36 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 * SUCH DAMAGE.
44 *
45 *	@(#)zsvar.h	8.1 (Berkeley) 6/11/93
46 */
47
48#include <dev/ic/z8530sc.h>
49
50struct zsc_softc {
51	struct	device zsc_dev;		/* required first: base device */
52	struct	zs_chanstate *zsc_cs[2];	/* channel A and B soft state */
53	/* Machine-dependent part follows... */
54	struct zs_chanstate  zsc_cs_store[2];
55};
56
57/*
58 * Functions to read and write individual registers in a channel.
59 * The ZS chip requires a 1.6 uSec. recovery time between accesses,
60 * and the NEWS3400 hardware does NOT take care of this for you.
61 * The delay is now handled inside the chip access functions.
62 * These could be inlines, but with the delay, speed is moot.
63 */
64
65u_char zs_read_reg __P((struct zs_chanstate *cs, u_char reg));
66u_char zs_read_csr __P((struct zs_chanstate *cs));
67u_char zs_read_data __P((struct zs_chanstate *cs));
68
69void  zs_write_reg __P((struct zs_chanstate *cs, u_char reg, u_char val));
70void  zs_write_csr __P((struct zs_chanstate *cs, u_char val));
71void  zs_write_data __P((struct zs_chanstate *cs, u_char val));
72
73/* Zilog Serial hardware interrupts (level 1) */
74#define splzs()		cpu_spl1()
75extern int splzs();
76