1/* $NetBSD: z8530var.h,v 1.13 2011/07/01 20:59:39 dyoung 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#include <sys/bus.h>
44#include <dev/ic/z8530sc.h>
45
46#include "kbd.h" /* NKBD */
47
48#if (NKBD > 0)
49/*
50 * Need to override cn_console_dev() for zstty and zskbd.
51 */
52#ifdef cn_isconsole
53#undef cn_isconsole
54#endif
55extern struct consdev *cn_hw;
56extern struct consdev *cn_tab;
57#define cn_isconsole(d) ((d) == cn_tab->cn_dev || (d) == cn_hw->cn_dev)
58#endif
59
60struct zsc_softc {
61 device_t zsc_dev; /* base device */
62 bus_space_tag_t zsc_bustag; /* bus space/DMA tags */
63 bus_dma_tag_t zsc_dmatag;
64 struct zs_chanstate *zsc_cs[2]; /* channel A and B soft state */
65
66 /* Machine-dependent part follows... */
67 void *zsc_softintr;
68 int zsc_promunit; /* PROM's view of zs devices */
69 int zsc_node; /* PROM node, if any */
70 struct evcnt zsc_intrcnt; /* count interrupts */
71 struct zs_chanstate zsc_cs_store[2];
72};
73
74/*
75 * Functions to read and write individual registers in a channel.
76 * The ZS chip requires a 1.6 uSec. recovery time between accesses.
77 * On the SparcStation the recovery time is handled in hardware.
78 * On the older Sun4 machine it isn't, and software must do it.
79 *
80 * However, it *is* a problem on some Sun4m's (i.e. the SS20) (XXX: why?).
81 * Thus we leave in the delay (done in the functions below).
82 * XXX: (ABB) Think about this more.
83 *
84 * The functions below could be macros instead if we are concerned
85 * about the function call overhead where ZS_DELAY does nothing.
86 */
87
88uint8_t zs_read_reg(struct zs_chanstate *cs, uint8_t reg);
89uint8_t zs_read_csr(struct zs_chanstate *cs);
90uint8_t zs_read_data(struct zs_chanstate *cs);
91
92void zs_write_reg(struct zs_chanstate *cs, uint8_t reg, uint8_t val);
93void zs_write_csr(struct zs_chanstate *cs, uint8_t val);
94void zs_write_data(struct zs_chanstate *cs, uint8_t val);
95
96/* The sparc has splzs() in psl.h */
97
98/* We want to call it "zs" instead of "zsc" (sigh). */
99#ifndef ZSCCF_CHANNEL
100#define ZSCCF_CHANNEL 0
101#define ZSCCF_CHANNEL_DEFAULT -1
102#endif
103
104#undef cn_trap
105#define cn_trap() zs_abort(NULL)
106
107#define IPL_ZS IPL_SERIAL