1 /* $NetBSD: com_obio.c,v 1.6 2018/12/08 17:46:10 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matt Thomas <matt@3am-software.com>.
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 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: com_obio.c,v 1.6 2018/12/08 17:46:10 thorpej Exp $");
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/device.h>
38 #include <sys/termios.h>
39
40 #include <sys/bus.h>
41
42 #include <arm/xscale/i80321var.h>
43
44 #include <evbarm/hdl_g/obiovar.h>
45
46 #include <dev/ic/comreg.h>
47 #include <dev/ic/comvar.h>
48
49 struct com_obio_softc {
50 struct com_softc sc_com;
51
52 void *sc_ih;
53 };
54
55 int com_obio_match(device_t, cfdata_t , void *);
56 void com_obio_attach(device_t, device_t, void *);
57
58 CFATTACH_DECL_NEW(com_obio, sizeof(struct com_obio_softc),
59 com_obio_match, com_obio_attach, NULL, NULL);
60
61 int
com_obio_match(device_t parent,cfdata_t cf,void * aux)62 com_obio_match(device_t parent, cfdata_t cf, void *aux)
63 {
64
65 /* We take it on faith that the device is there. */
66 return 1;
67 }
68
69 void
com_obio_attach(device_t parent,device_t self,void * aux)70 com_obio_attach(device_t parent, device_t self, void *aux)
71 {
72 struct obio_attach_args *oba = aux;
73 struct com_obio_softc *osc = device_private(self);
74 struct com_softc *sc = &osc->sc_com;
75 bus_space_handle_t ioh;
76 int error;
77
78 sc->sc_dev = self;
79 sc->sc_frequency = COM_FREQ;
80 sc->sc_hwflags = COM_HW_NO_TXPRELOAD;
81 error = bus_space_map(oba->oba_st, oba->oba_addr, 8, 0, &ioh);
82 com_init_regs(&sc->sc_regs, oba->oba_st, ioh, oba->oba_addr);
83
84 if (error) {
85 aprint_error(": failed to map registers: %d\n", error);
86 return;
87 }
88
89 com_attach_subr(sc);
90
91 osc->sc_ih = i80321_intr_establish(oba->oba_irq, IPL_SERIAL,
92 comintr, sc);
93 if (osc->sc_ih == NULL)
94 aprint_error_dev(self,
95 "unable to establish interrupt at irq %d\n", oba->oba_irq);
96 }
97