1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/* $OpenBSD: rtfps.c,v 1.16 1997/01/29 06:23:31 downsj Exp $ */
/* $NetBSD: rtfps.c,v 1.27 1996/10/21 22:41:18 thorpej Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
* Copyright (c) 1995 Charles Hannum. All rights reserved.
*
* This code is derived from public-domain software written by
* Roland McGrath.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/termios.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/isa/isavar.h>
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
#define NSLAVES 4
struct rtfps_softc {
struct device sc_dev;
void *sc_ih;
bus_space_tag_t sc_iot;
int sc_iobase;
int sc_irqport;
bus_space_handle_t sc_irqioh;
int sc_alive; /* mask of slave units attached */
void *sc_slaves[NSLAVES]; /* com device unit numbers */
bus_space_handle_t sc_slaveioh[NSLAVES];
};
int rtfpsprobe __P((struct device *, void *, void *));
void rtfpsattach __P((struct device *, struct device *, void *));
int rtfpsintr __P((void *));
int rtfpsprint __P((void *, const char *));
struct cfattach rtfps_ca = {
sizeof(struct rtfps_softc), rtfpsprobe, rtfpsattach
};
struct cfdriver rtfps_cd = {
NULL, "rtfps", DV_TTY
};
int
rtfpsprobe(parent, self, aux)
struct device *parent;
void *self;
void *aux;
{
struct isa_attach_args *ia = aux;
int iobase = ia->ia_iobase;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
int i, rv = 1;
/*
* Do the normal com probe for the first UART and assume
* its presence, and the ability to map the other UARTS,
* means there is a multiport board there.
* XXX Needs more robustness.
*/
/* if the first port is in use as console, then it. */
if (iobase == comconsaddr && !comconsattached)
goto checkmappings;
if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) {
rv = 0;
goto out;
}
rv = comprobe1(iot, ioh, iobase);
bus_space_unmap(iot, ioh, COM_NPORTS);
if (rv == 0)
goto out;
checkmappings:
for (i = 1; i < NSLAVES; i++) {
iobase += COM_NPORTS;
if (iobase == comconsaddr && !comconsattached)
continue;
if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) {
rv = 0;
goto out;
}
bus_space_unmap(iot, ioh, COM_NPORTS);
}
out:
if (rv)
ia->ia_iosize = NSLAVES * COM_NPORTS;
return (rv);
}
int
rtfpsprint(aux, pnp)
void *aux;
const char *pnp;
{
struct commulti_attach_args *ca = aux;
if (pnp)
printf("com at %s", pnp);
printf(" slave %d", ca->ca_slave);
return (UNCONF);
}
void
rtfpsattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct rtfps_softc *sc = (void *)self;
struct isa_attach_args *ia = aux;
struct commulti_attach_args ca;
static int irqport[] = {
IOBASEUNK, IOBASEUNK, IOBASEUNK, IOBASEUNK,
IOBASEUNK, IOBASEUNK, IOBASEUNK, IOBASEUNK,
IOBASEUNK, 0x2f2, 0x6f2, 0x6f3,
IOBASEUNK, IOBASEUNK, IOBASEUNK, IOBASEUNK
};
bus_space_tag_t iot = ia->ia_iot;
int i;
sc->sc_iot = ia->ia_iot;
sc->sc_iobase = ia->ia_iobase;
if (ia->ia_irq >= 16 || irqport[ia->ia_irq] == IOBASEUNK)
panic("rtfpsattach: invalid irq");
sc->sc_irqport = irqport[ia->ia_irq];
for (i = 0; i < NSLAVES; i++)
if (bus_space_map(iot, sc->sc_iobase + i * COM_NPORTS,
COM_NPORTS, 0, &sc->sc_slaveioh[i]))
panic("rtfpsattach: couldn't map slave %d", i);
if (bus_space_map(iot, sc->sc_irqport, 1, 0, &sc->sc_irqioh))
panic("rtfpsattach: couldn't map irq port at 0x%x\n",
sc->sc_irqport);
bus_space_write_1(iot, sc->sc_irqioh, 0, 0);
printf("\n");
for (i = 0; i < NSLAVES; i++) {
ca.ca_slave = i;
ca.ca_iot = sc->sc_iot;
ca.ca_ioh = sc->sc_slaveioh[i];
ca.ca_iobase = sc->sc_iobase + i * COM_NPORTS;
ca.ca_noien = 0;
sc->sc_slaves[i] = config_found(self, &ca, rtfpsprint);
if (sc->sc_slaves[i] != NULL)
sc->sc_alive |= 1 << i;
}
sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_TTY, rtfpsintr, sc, sc->sc_dev.dv_xname);
}
int
rtfpsintr(arg)
void *arg;
{
struct rtfps_softc *sc = arg;
bus_space_tag_t iot = sc->sc_iot;
int alive = sc->sc_alive;
bus_space_write_1(iot, sc->sc_irqioh, 0, 0);
#define TRY(n) \
if (alive & (1 << (n))) \
comintr(sc->sc_slaves[n]);
TRY(0);
TRY(1);
TRY(2);
TRY(3);
#undef TRY
return (1);
}
|
