1 /* $OpenBSD: com_ssio.c,v 1.3 2022/03/13 08:04:38 mpi Exp $ */
2
3 /*
4 * Copyright (c) 2007 Mark Kettenis
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/param.h>
20 #include <sys/systm.h>
21 #include <sys/device.h>
22 #include <sys/tty.h>
23
24 #include <machine/bus.h>
25 #include <machine/iomod.h>
26
27 #include <dev/ic/comreg.h>
28 #include <dev/ic/comvar.h>
29
30 #include <hppa/dev/ssiovar.h>
31
32 #define COM_SSIO_FREQ 1843200
33
34 int com_ssio_match(struct device *, void *, void *);
35 void com_ssio_attach(struct device *, struct device *, void *);
36
37 const struct cfattach com_ssio_ca = {
38 sizeof(struct com_softc), com_ssio_match, com_ssio_attach
39 };
40
41 int
com_ssio_match(struct device * parent,void * match,void * aux)42 com_ssio_match(struct device *parent, void *match, void *aux)
43 {
44 struct cfdata *cf = match;
45 struct ssio_attach_args *saa = aux;
46
47 if (strcmp(saa->saa_name, "com") != 0)
48 return (0);
49
50 /* Check locators. */
51 if (cf->ssiocf_irq != SSIO_UNK_IRQ && cf->ssiocf_irq != saa->saa_irq)
52 return (0);
53
54 return (1);
55 }
56
57 void
com_ssio_attach(struct device * parent,struct device * self,void * aux)58 com_ssio_attach(struct device *parent, struct device *self, void *aux)
59 {
60 struct com_softc *sc = (void *)self;
61 struct ssio_attach_args *saa = aux;
62
63 sc->sc_iot = saa->saa_iot;
64 sc->sc_iobase = saa->saa_iobase;
65 if (bus_space_map(sc->sc_iot, sc->sc_iobase, COM_NPORTS,
66 0, &sc->sc_ioh)) {
67 printf(": cannot map io space\n");
68 return;
69 }
70
71 if (PAGE0->mem_cons.pz_class == PCL_DUPLEX &&
72 PAGE0->mem_cons.pz_hpa == sc->sc_ioh) {
73 bus_space_unmap(sc->sc_iot, sc->sc_ioh, COM_NPORTS);
74 comcnattach(sc->sc_iot, sc->sc_iobase, comdefaultrate,
75 COM_SSIO_FREQ, comconscflag);
76 }
77
78 sc->sc_frequency = COM_SSIO_FREQ;
79 com_attach_subr(sc);
80
81 sc->sc_ih = ssio_intr_establish(IPL_TTY, saa->saa_irq,
82 comintr, sc, sc->sc_dev.dv_xname);
83 }
84