xref: /netbsd-src/sys/dev/ic/com_cpcbus.c (revision e5548b402ae4c44fb816de42c7bba9581ce23ef5)
1 /*	$NetBSD: com_cpcbus.c,v 1.6 2005/12/11 12:21:26 christos Exp $	*/
2 
3 /*
4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Lennart Augustsson (lennart@augustsson.net) at Sandburst Corp.
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  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *        This product includes software developed by the NetBSD
21  *        Foundation, Inc. and its contributors.
22  * 4. Neither the name of The NetBSD Foundation nor the names of its
23  *    contributors may be used to endorse or promote products derived
24  *    from this software without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36  * POSSIBILITY OF SUCH DAMAGE.
37  */
38 
39 #include <sys/cdefs.h>
40 __KERNEL_RCSID(0, "$NetBSD: com_cpcbus.c,v 1.6 2005/12/11 12:21:26 christos Exp $");
41 
42 #include <sys/param.h>
43 #include <sys/device.h>
44 #include <sys/tty.h>
45 #include <sys/systm.h>
46 
47 #include <machine/bus.h>
48 
49 #include <dev/ic/cpc700reg.h>
50 #include <dev/ic/cpc700var.h>
51 
52 #include <dev/ic/comreg.h>
53 #include <dev/ic/comvar.h>
54 
55 struct com_cpc_softc {
56 	struct com_softc sc_com;
57 	void *sc_ih;
58 };
59 
60 static int	com_cpc_match(struct device *, struct cfdata *, void *);
61 static void	com_cpc_attach(struct device *, struct device *, void *);
62 
63 CFATTACH_DECL(com_cpcbus, sizeof(struct com_cpc_softc),
64     com_cpc_match, com_cpc_attach, NULL, NULL);
65 
66 int
67 com_cpc_match(struct device *parent, struct cfdata *cf, void *aux)
68 {
69 	struct cpcbus_attach_args *caa = aux;
70 
71 	return (strcmp(caa->cpca_name, "com") == 0);
72 }
73 
74 void
75 com_cpc_attach(struct device *parent, struct device *self, void *aux)
76 {
77 	struct cpcbus_attach_args *caa = aux;
78 	struct com_cpc_softc *sc = (struct com_cpc_softc *)self;
79 	int iobase = caa->cpca_addr;
80 	int irq = caa->cpca_irq;
81 
82 	sc->sc_com.sc_iot = caa->cpca_tag;
83 	sc->sc_com.sc_iobase = iobase;
84 
85 	if (!com_is_console(sc->sc_com.sc_iot, iobase, &sc->sc_com.sc_ioh) &&
86 	    bus_space_map(sc->sc_com.sc_iot, iobase, COM_NPORTS, 0,
87 			  &sc->sc_com.sc_ioh)) {
88 		printf("%s: can't map i/o space\n", self->dv_xname);
89 		return;
90 	}
91 
92 	sc->sc_com.sc_frequency = CPC_COM_SPEED(caa->cpca_freq);
93 
94 	com_attach_subr(&sc->sc_com);
95 
96 	sc->sc_ih = intr_establish(irq, IST_LEVEL, IPL_SERIAL, comintr,
97 				   &sc->sc_com);
98 }
99