uart_iobus.c revision 331722 
1/*-
2 * Copyright 2002 by Peter Grehan. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: stable/11/sys/powerpc/psim/uart_iobus.c 331722 2018-03-29 02:50:57Z eadler $
28 */
29
30/*
31 * PSIM local bus 16550
32 */
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/bus.h>
37#include <sys/conf.h>
38#include <sys/kernel.h>
39#include <sys/lock.h>
40#include <sys/malloc.h>
41#include <sys/mutex.h>
42#include <sys/module.h>
43#include <sys/tty.h>
44#include <machine/bus.h>
45#include <sys/timepps.h>
46
47#include <dev/ofw/openfirm.h>
48#include <powerpc/psim/iobusvar.h>
49
50#include <dev/uart/uart.h>
51#include <dev/uart/uart_bus.h>
52
53static int uart_iobus_probe(device_t dev);
54
55static device_method_t uart_iobus_methods[] = {
56        /* Device interface */
57	DEVMETHOD(device_probe,		uart_iobus_probe),
58	DEVMETHOD(device_attach,	uart_bus_attach),
59	DEVMETHOD(device_detach,	uart_bus_detach),
60
61	{ 0, 0 }
62};
63
64static driver_t uart_iobus_driver = {
65	uart_driver_name,
66	uart_iobus_methods,
67	sizeof(struct uart_softc),
68};
69
70static int
71uart_iobus_probe(device_t dev)
72{
73	struct uart_softc *sc;
74	char *type;
75
76	type = iobus_get_name(dev);
77	if (strncmp(type, "com", 3) != 0)
78		return (ENXIO);
79
80	sc = device_get_softc(dev);
81	sc->sc_class = &uart_ns8250_class;
82
83	device_set_desc(dev, "PSIM serial port");
84	return (uart_bus_probe(dev, 0, 0, 0, 0));
85}
86
87DRIVER_MODULE(uart, iobus, uart_iobus_driver, uart_devclass, 0, 0);
88