1/*	$OpenBSD: com_gsc.c,v 1.22 2022/03/13 08:04:38 mpi Exp $	*/
2
3/*
4 * Copyright (c) 1998-2003 Michael Shalayeff
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
26 * THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/device.h>
32#include <sys/tty.h>
33
34#include <machine/bus.h>
35#include <machine/intr.h>
36#include <machine/iomod.h>
37#include <machine/autoconf.h>
38
39#include <dev/ic/comreg.h>
40#include <dev/ic/comvar.h>
41
42#include <hppa/dev/cpudevs.h>
43#include <hppa/gsc/gscbusvar.h>
44
45#define COM_GSC_FREQ	7372800
46
47struct com_gsc_regs {
48	u_int8_t reset;
49};
50
51int	com_gsc_probe(struct device *, void *, void *);
52void	com_gsc_attach(struct device *, struct device *, void *);
53
54const struct cfattach com_gsc_ca = {
55	sizeof(struct com_softc), com_gsc_probe, com_gsc_attach
56};
57
58int
59com_gsc_probe(parent, match, aux)
60	struct device *parent;
61	void *match, *aux;
62{
63	struct gsc_attach_args *ga = aux;
64
65	if (ga->ga_type.iodc_type != HPPA_TYPE_FIO ||
66	    (ga->ga_type.iodc_sv_model != HPPA_FIO_GRS232 &&
67	     ga->ga_type.iodc_sv_model != HPPA_FIO_RS232 &&
68	     ga->ga_type.iodc_sv_model != HPPA_FIO_GRJ16))
69		return (0);
70
71	return (1);
72	/* HOZER comprobe1(ga->ga_iot, ga->ga_hpa + IOMOD_DEVOFFSET); */
73}
74
75void
76com_gsc_attach(parent, self, aux)
77	struct device *parent, *self;
78	void *aux;
79{
80	struct com_softc *sc = (void *)self;
81	struct gsc_attach_args *ga = aux;
82
83	sc->sc_iot = ga->ga_iot;
84	sc->sc_iobase = (bus_addr_t)ga->ga_hpa;
85	if (ga->ga_type.iodc_sv_model != HPPA_FIO_GRJ16)
86		sc->sc_iobase += IOMOD_DEVOFFSET;
87
88	if (bus_space_map(sc->sc_iot, sc->sc_iobase, COM_NPORTS,
89	    0, &sc->sc_ioh)) {
90		printf(": cannot map io space\n");
91		return;
92	}
93
94	if (PAGE0->mem_cons.pz_class == PCL_DUPLEX &&
95	    PAGE0->mem_cons.pz_hpa == ga->ga_hpa) {
96		bus_space_unmap(sc->sc_iot, sc->sc_ioh, COM_NPORTS);
97		comcnattach(sc->sc_iot, sc->sc_iobase, comdefaultrate,
98		    COM_GSC_FREQ, comconscflag);
99	}
100
101	sc->sc_frequency = COM_GSC_FREQ;
102	com_attach_subr(sc);
103
104	sc->sc_ih = gsc_intr_establish((struct gsc_softc *)parent,
105	    ga->ga_irq, IPL_TTY, comintr, sc, sc->sc_dev.dv_xname);
106}
107