uart_iobus.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright 2002 by Peter Grehan. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/11/sys/powerpc/psim/uart_iobus.c 330897 2018-03-14 03:19:51Z eadler $
30 */
31
32/*
33 * PSIM local bus 16550
34 */
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/bus.h>
39#include <sys/conf.h>
40#include <sys/kernel.h>
41#include <sys/lock.h>
42#include <sys/malloc.h>
43#include <sys/mutex.h>
44#include <sys/module.h>
45#include <sys/tty.h>
46#include <machine/bus.h>
47#include <sys/timepps.h>
48
49#include <dev/ofw/openfirm.h>
50#include <powerpc/psim/iobusvar.h>
51
52#include <dev/uart/uart.h>
53#include <dev/uart/uart_bus.h>
54
55static int uart_iobus_probe(device_t dev);
56
57static device_method_t uart_iobus_methods[] = {
58        /* Device interface */
59	DEVMETHOD(device_probe,		uart_iobus_probe),
60	DEVMETHOD(device_attach,	uart_bus_attach),
61	DEVMETHOD(device_detach,	uart_bus_detach),
62
63	{ 0, 0 }
64};
65
66static driver_t uart_iobus_driver = {
67	uart_driver_name,
68	uart_iobus_methods,
69	sizeof(struct uart_softc),
70};
71
72static int
73uart_iobus_probe(device_t dev)
74{
75	struct uart_softc *sc;
76	char *type;
77
78	type = iobus_get_name(dev);
79	if (strncmp(type, "com", 3) != 0)
80		return (ENXIO);
81
82	sc = device_get_softc(dev);
83	sc->sc_class = &uart_ns8250_class;
84
85	device_set_desc(dev, "PSIM serial port");
86	return (uart_bus_probe(dev, 0, 0, 0, 0));
87}
88
89DRIVER_MODULE(uart, iobus, uart_iobus_driver, uart_devclass, 0, 0);
90