uart_bus_ebus.c revision 133589 
1/*-
2 * Copyright (c) 2001 by Thomas Moestl <tmm@FreeBSD.org>.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
18 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
20 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
21 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/dev/uart/uart_bus_ebus.c 133589 2004-08-12 17:41:33Z marius $");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/bus.h>
33#include <sys/kernel.h>
34#include <sys/module.h>
35
36#include <dev/ofw/ofw_bus.h>
37
38#include <machine/bus.h>
39#include <sys/rman.h>
40#include <machine/resource.h>
41
42#include <dev/uart/uart.h>
43#include <dev/uart/uart_bus.h>
44#include <dev/uart/uart_cpu.h>
45
46static int uart_ebus_probe(device_t dev);
47
48static device_method_t uart_ebus_methods[] = {
49	/* Device interface */
50	DEVMETHOD(device_probe,		uart_ebus_probe),
51	DEVMETHOD(device_attach,	uart_bus_attach),
52	DEVMETHOD(device_detach,	uart_bus_detach),
53	{ 0, 0 }
54};
55
56static driver_t uart_ebus_driver = {
57	uart_driver_name,
58	uart_ebus_methods,
59	sizeof(struct uart_softc),
60};
61
62static int
63uart_ebus_probe(device_t dev)
64{
65	const char *nm, *cmpt;
66	struct uart_softc *sc;
67	int error;
68
69	sc = device_get_softc(dev);
70	sc->sc_class = NULL;
71
72	nm = ofw_bus_get_name(dev);
73	cmpt = ofw_bus_get_compat(dev);
74	if (!strcmp(nm, "su") || !strcmp(nm, "su_pnp") || (cmpt != NULL &&
75	    (!strcmp(cmpt, "su") || !strcmp(cmpt, "su16550")))) {
76		sc->sc_class = &uart_ns8250_class;
77		return (uart_bus_probe(dev, 0, 0, 0, 0));
78	}
79	if (!strcmp(nm, "se")) {
80		sc->sc_class = &uart_sab82532_class;
81		error = uart_bus_probe(dev, 0, 0, 0, 1);
82		return ((error) ? error : -1);
83	}
84
85	return (ENXIO);
86}
87
88DRIVER_MODULE(uart, ebus, uart_ebus_driver, uart_devclass, 0, 0);
89