1/* $OpenBSD: z8530var.h,v 1.9 2024/03/29 21:17:13 miod Exp $ */
2/* $NetBSD: z8530var.h,v 1.4 2000/11/08 23:41:42 eeh Exp $ */
3
4/*
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. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 *
41 * @(#)zsvar.h 8.1 (Berkeley) 6/11/93
42 */
43
44#include <machine/bus.h>
45#include <dev/ic/z8530sc.h>
46
47struct zsc_softc {
48 struct device zsc_dev; /* base device */
49 bus_space_tag_t zsc_bustag; /* bus space/dma tags */
50 bus_dma_tag_t zsc_dmatag;
51 struct zs_chanstate *zsc_cs[2]; /* channel A and B soft state */
52
53 /* Machine-dependent part follows... */
54 void *zsc_softintr;
55 int zsc_promunit; /* PROM's view of zs devices */
56 int zsc_node; /* PROM node, if any */
57 struct zs_chanstate zsc_cs_store[2];
58};
59
60/*
61 * Functions to read and write individual registers in a channel.
62 * The ZS chip requires a 1.6 uSec. recovery time between accesses.
63 * On sparc64, the recovery time is handled in hardware.
64 */
65
66u_char zs_read_reg(struct zs_chanstate *cs, u_char reg);
67u_char zs_read_csr(struct zs_chanstate *cs);
68u_char zs_read_data(struct zs_chanstate *cs);
69
70void zs_write_reg(struct zs_chanstate *cs, u_char reg, u_char val);
71void zs_write_csr(struct zs_chanstate *cs, u_char val);
72void zs_write_data(struct zs_chanstate *cs, u_char val);
73
74/* The sparc has splzs() in psl.h */
75
76/* We want to call it "zs" instead of "zsc" (sigh). */
77#ifndef ZSCCF_CHANNEL
78#define ZSCCF_CHANNEL 0
79#define ZSCCF_CHANNEL_DEFAULT -1
80#endif