zs_any.c revision 1.2 1 1.2 lukem /* $NetBSD: zs_any.c,v 1.2 2001/05/30 15:24:38 lukem Exp $ */
2 1.1 fredette
3 1.1 fredette /*-
4 1.1 fredette * Copyright (c) 1996 The NetBSD Foundation, Inc.
5 1.1 fredette * All rights reserved.
6 1.1 fredette *
7 1.1 fredette * This code is derived from software contributed to The NetBSD Foundation
8 1.1 fredette * by Gordon W. Ross and Matthew Fredette.
9 1.1 fredette *
10 1.1 fredette * Redistribution and use in source and binary forms, with or without
11 1.1 fredette * modification, are permitted provided that the following conditions
12 1.1 fredette * are met:
13 1.1 fredette * 1. Redistributions of source code must retain the above copyright
14 1.1 fredette * notice, this list of conditions and the following disclaimer.
15 1.1 fredette * 2. Redistributions in binary form must reproduce the above copyright
16 1.1 fredette * notice, this list of conditions and the following disclaimer in the
17 1.1 fredette * documentation and/or other materials provided with the distribution.
18 1.1 fredette * 3. All advertising materials mentioning features or use of this software
19 1.1 fredette * must display the following acknowledgement:
20 1.1 fredette * This product includes software developed by the NetBSD
21 1.1 fredette * Foundation, Inc. and its contributors.
22 1.1 fredette * 4. Neither the name of The NetBSD Foundation nor the names of its
23 1.1 fredette * contributors may be used to endorse or promote products derived
24 1.1 fredette * from this software without specific prior written permission.
25 1.1 fredette *
26 1.1 fredette * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 1.1 fredette * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 1.1 fredette * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 1.1 fredette * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 1.1 fredette * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 1.1 fredette * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 1.1 fredette * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 1.1 fredette * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 1.1 fredette * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 1.1 fredette * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 1.1 fredette * POSSIBILITY OF SUCH DAMAGE.
37 1.1 fredette */
38 1.1 fredette
39 1.1 fredette /*
40 1.1 fredette * Zilog Z8530 Dual UART driver (machine-dependent part)
41 1.1 fredette *
42 1.1 fredette * Runs two serial lines per chip using slave drivers.
43 1.1 fredette * Plain tty/async lines use the zs_async slave.
44 1.1 fredette * Sun keyboard/mouse uses the zs_kbd/zs_ms slaves.
45 1.1 fredette */
46 1.2 lukem
47 1.2 lukem #include "opt_kgdb.h"
48 1.1 fredette
49 1.1 fredette #include <sys/param.h>
50 1.1 fredette #include <sys/systm.h>
51 1.1 fredette #include <sys/conf.h>
52 1.1 fredette #include <sys/device.h>
53 1.1 fredette #include <sys/file.h>
54 1.1 fredette #include <sys/ioctl.h>
55 1.1 fredette #include <sys/kernel.h>
56 1.1 fredette #include <sys/proc.h>
57 1.1 fredette #include <sys/tty.h>
58 1.1 fredette #include <sys/time.h>
59 1.1 fredette #include <sys/syslog.h>
60 1.1 fredette
61 1.1 fredette #include <machine/autoconf.h>
62 1.1 fredette #include <machine/bus.h>
63 1.1 fredette #include <machine/z8530var.h>
64 1.1 fredette
65 1.1 fredette #ifdef KGDB
66 1.1 fredette #include <uvm/uvm_extern.h>
67 1.1 fredette
68 1.1 fredette #include <machine/idprom.h>
69 1.1 fredette #include <machine/pmap.h>
70 1.1 fredette #include <dev/sun/cons.h>
71 1.1 fredette #endif
72 1.1 fredette
73 1.1 fredette #include <sun2/sun2/machdep.h>
74 1.1 fredette #include <dev/ic/z8530reg.h>
75 1.1 fredette
76 1.1 fredette /****************************************************************
77 1.1 fredette * Autoconfig
78 1.1 fredette ****************************************************************/
79 1.1 fredette
80 1.1 fredette /* Definition of the driver for autoconfig. */
81 1.1 fredette static int zs_any_match __P((struct device *, struct cfdata *, void *));
82 1.1 fredette static void zs_any_attach __P((struct device *, struct device *, void *));
83 1.1 fredette
84 1.1 fredette struct cfattach zs_obio_ca = {
85 1.1 fredette sizeof(struct zsc_softc), zs_any_match, zs_any_attach
86 1.1 fredette };
87 1.1 fredette
88 1.1 fredette struct cfattach zs_obmem_ca = {
89 1.1 fredette sizeof(struct zsc_softc), zs_any_match, zs_any_attach
90 1.1 fredette };
91 1.1 fredette
92 1.1 fredette struct cfattach zs_mbmem_ca = {
93 1.1 fredette sizeof(struct zsc_softc), zs_any_match, zs_any_attach
94 1.1 fredette };
95 1.1 fredette
96 1.1 fredette /*
97 1.1 fredette * Is the zs chip present?
98 1.1 fredette */
99 1.1 fredette static int
100 1.1 fredette zs_any_match(parent, cf, aux)
101 1.1 fredette struct device *parent;
102 1.1 fredette struct cfdata *cf;
103 1.1 fredette void *aux;
104 1.1 fredette {
105 1.1 fredette struct confargs *ca = aux;
106 1.1 fredette
107 1.1 fredette /* Make sure there is something there... */
108 1.1 fredette if (!bus_space_probe(ca->ca_bustag, 0, ca->ca_paddr,
109 1.1 fredette 1, /* probe size */
110 1.1 fredette 0, /* offset */
111 1.1 fredette 0, /* flags */
112 1.1 fredette NULL, NULL))
113 1.1 fredette return (0);
114 1.1 fredette
115 1.1 fredette /* Default interrupt priority (always splbio==2) */
116 1.1 fredette if (ca->ca_intpri == -1)
117 1.1 fredette ca->ca_intpri = ZSHARD_PRI;
118 1.1 fredette
119 1.1 fredette return (1);
120 1.1 fredette }
121 1.1 fredette
122 1.1 fredette /*
123 1.1 fredette * Attach a found zs.
124 1.1 fredette */
125 1.1 fredette static void
126 1.1 fredette zs_any_attach(parent, self, aux)
127 1.1 fredette struct device *parent;
128 1.1 fredette struct device *self;
129 1.1 fredette void *aux;
130 1.1 fredette {
131 1.1 fredette struct zsc_softc *zsc = (void *) self;
132 1.1 fredette struct confargs *ca = aux;
133 1.1 fredette bus_space_handle_t bh;
134 1.1 fredette
135 1.1 fredette zsc->zsc_bustag = ca->ca_bustag;
136 1.1 fredette zsc->zsc_dmatag = ca->ca_dmatag;
137 1.1 fredette zsc->zsc_promunit = self->dv_unit;
138 1.1 fredette zsc->zsc_node = 0;
139 1.1 fredette
140 1.1 fredette /* Map in the device. */
141 1.1 fredette if (bus_space_map(ca->ca_bustag, ca->ca_paddr, sizeof(struct zsdevice),
142 1.1 fredette BUS_SPACE_MAP_LINEAR, &bh))
143 1.1 fredette panic("zs_any_attach: can't map");
144 1.1 fredette
145 1.1 fredette /* This is where we break the bus_space(9) abstraction: */
146 1.1 fredette zs_attach(zsc, (void *)bh, ca->ca_intpri);
147 1.1 fredette }
148 1.1 fredette
149 1.1 fredette #ifdef KGDB
150 1.1 fredette /*
151 1.1 fredette * Find a zs mapped by the PROM. Currently this only works to find
152 1.1 fredette * zs0 on obio.
153 1.1 fredette */
154 1.1 fredette void *
155 1.1 fredette zs_find_prom(unit)
156 1.1 fredette int unit;
157 1.1 fredette {
158 1.1 fredette bus_addr_t zs0_phys;
159 1.1 fredette bus_space_handle_t bh;
160 1.1 fredette
161 1.1 fredette if (unit != 0)
162 1.1 fredette return (NULL);
163 1.1 fredette
164 1.1 fredette /*
165 1.1 fredette * The physical address of zs0 is model-dependent.
166 1.1 fredette */
167 1.1 fredette zs0_phys = (cpu_machine_id == SUN2_MACH_120 ?
168 1.1 fredette 0x002000 : 0x7f2000);
169 1.1 fredette
170 1.1 fredette if (sun2_find_prom_map(zs0_phys, PMAP_OBIO, sizeof(struct zsdevice), &bh))
171 1.1 fredette return (NULL);
172 1.1 fredette
173 1.1 fredette return ((void*) bh);
174 1.1 fredette }
175 1.1 fredette #endif /* KGDB */
176