1/*	$NetBSD: z8530var.h,v 1.12 2008/01/12 09:54:28 tsutsui Exp $	*/
2
3/*
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 * contributed to Berkeley.
10 *
11 * All advertising materials mentioning features or use of this software
12 * must display the following acknowledgement:
13 *	This product includes software developed by the University of
14 *	California, Lawrence Berkeley Laboratory.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 * 1. Redistributions of source code must retain the above copyright
20 *    notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 *    notice, this list of conditions and the following disclaimer in the
23 *    documentation and/or other materials provided with the distribution.
24 * 3. Neither the name of the University nor the names of its contributors
25 *    may be used to endorse or promote products derived from this software
26 *    without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
40 *	@(#)zsvar.h	8.1 (Berkeley) 6/11/93
41 */
42
43/*
44 * Copyright (c) 1994 Gordon W. Ross
45 *
46 * This software was developed by the Computer Systems Engineering group
47 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
48 * contributed to Berkeley.
49 *
50 * All advertising materials mentioning features or use of this software
51 * must display the following acknowledgement:
52 *	This product includes software developed by the University of
53 *	California, Lawrence Berkeley Laboratory.
54 *
55 * Redistribution and use in source and binary forms, with or without
56 * modification, are permitted provided that the following conditions
57 * are met:
58 * 1. Redistributions of source code must retain the above copyright
59 *    notice, this list of conditions and the following disclaimer.
60 * 2. Redistributions in binary form must reproduce the above copyright
61 *    notice, this list of conditions and the following disclaimer in the
62 *    documentation and/or other materials provided with the distribution.
63 * 3. All advertising materials mentioning features or use of this software
64 *    must display the following acknowledgement:
65 *	This product includes software developed by the University of
66 *	California, Berkeley and its contributors.
67 * 4. Neither the name of the University nor the names of its contributors
68 *    may be used to endorse or promote products derived from this software
69 *    without specific prior written permission.
70 *
71 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
72 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
73 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
74 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
75 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
76 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
77 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
78 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
79 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
80 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
81 * SUCH DAMAGE.
82 *
83 *	@(#)zsvar.h	8.1 (Berkeley) 6/11/93
84 */
85
86#include <dev/ic/z8530sc.h>
87
88struct zsc_softc {
89	device_t zsc_dev;		/* required first: base device */
90	struct	zs_chanstate *zsc_cs[2];	/* channel A and B soft state */
91	/* Machine-dependent part follows... */
92	struct zs_chanstate  zsc_cs_store[2];
93	void *zsc_softintr_cookie;
94	struct evcnt zsc_evcnt;
95};
96
97/*
98 * Functions to read and write individual registers in a channel.
99 * The ZS chip requires a 1.6 uSec. recovery time between accesses,
100 * and the Sun3 hardware does NOT take care of this for you.
101 * The delay is now handled inside the chip access functions.
102 * These could be inlines, but with the delay, speed is moot.
103 */
104
105uint8_t zs_read_reg(struct zs_chanstate *cs, uint8_t reg);
106uint8_t zs_read_csr(struct zs_chanstate *cs);
107uint8_t zs_read_data(struct zs_chanstate *cs);
108
109void  zs_write_reg(struct zs_chanstate *cs, uint8_t reg, uint8_t val);
110void  zs_write_csr(struct zs_chanstate *cs, uint8_t val);
111void  zs_write_data(struct zs_chanstate *cs, uint8_t val);
112
113/* Interrupt priority for the SCC chip; needs to match ZSHARD_PRI. */
114#define splzs()		splserial()
115#define	IPL_ZS		IPL_SERIAL
116