1 /* $NetBSD: com_multi.c,v 1.30 2018/12/08 17:46:13 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*-
33 * Copyright (c) 1991 The Regents of the University of California.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 * @(#)com.c 7.5 (Berkeley) 5/16/91
61 */
62
63 /*
64 * COM driver, uses National Semiconductor NS16450/NS16550AF UART
65 */
66
67 #include <sys/cdefs.h>
68 __KERNEL_RCSID(0, "$NetBSD: com_multi.c,v 1.30 2018/12/08 17:46:13 thorpej Exp $");
69
70 #include <sys/param.h>
71 #include <sys/systm.h>
72 #include <sys/ioctl.h>
73 #include <sys/select.h>
74 #include <sys/tty.h>
75 #include <sys/proc.h>
76 #include <sys/conf.h>
77 #include <sys/file.h>
78 #include <sys/uio.h>
79 #include <sys/kernel.h>
80 #include <sys/syslog.h>
81 #include <sys/device.h>
82
83 #include <sys/intr.h>
84 #include <sys/bus.h>
85
86 #include <dev/ic/comreg.h>
87 #include <dev/ic/comvar.h>
88
89 #include <dev/isa/isavar.h>
90 #include <dev/isa/com_multi.h>
91
92 #include "locators.h"
93
94 int com_multi_probe(device_t, cfdata_t , void *);
95 void com_multi_attach(device_t, device_t, void *);
96
97 CFATTACH_DECL_NEW(com_multi, sizeof(struct com_softc),
98 com_multi_probe, com_multi_attach, NULL, NULL);
99
100 int
com_multi_probe(device_t parent,cfdata_t match,void * aux)101 com_multi_probe(device_t parent, cfdata_t match, void *aux)
102 {
103 int iobase;
104 cfdata_t cf = match;
105 struct commulti_attach_args *ca = aux;
106
107 if (cf->cf_loc[COMMULTICF_SLAVE] != COMMULTICF_SLAVE_DEFAULT &&
108 cf->cf_loc[COMMULTICF_SLAVE] != ca->ca_slave)
109 return (0);
110
111 iobase = ca->ca_iobase;
112
113 /* if it's in use as console, it's there. */
114 if (com_is_console(ca->ca_iot, iobase, 0))
115 return 1;
116
117 return comprobe1(ca->ca_iot, ca->ca_ioh);
118 }
119
120 void
com_multi_attach(device_t parent,device_t self,void * aux)121 com_multi_attach(device_t parent, device_t self, void *aux)
122 {
123 struct com_softc *sc = device_private(self);
124 struct commulti_attach_args *ca = aux;
125
126 sc->sc_dev = self;
127
128 /*
129 * We're living on a commulti.
130 */
131 com_init_regs(&sc->sc_regs, ca->ca_iot, ca->ca_ioh, ca->ca_iobase);
132 sc->sc_frequency = 115200 * 16;
133
134 if (ca->ca_noien)
135 sc->sc_hwflags |= COM_HW_NOIEN;
136
137 com_attach_subr(sc);
138 }
139