uart_bus_pccard.c revision 120081 
1/*
2 * Copyright (c) 2001 M. Warner Losh.  All rights reserved.
3 * Copyright (c) 2003 Norikatsu Shigemura, Takenori Watanabe 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 BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include <sys/cdefs.h>
27__FBSDID("$FreeBSD: head/sys/dev/uart/uart_bus_pccard.c 120081 2003-09-15 03:12:27Z takawata $");
28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/bus.h>
32#include <sys/conf.h>
33#include <sys/kernel.h>
34#include <sys/lock.h>
35#include <sys/malloc.h>
36#include <sys/mutex.h>
37#include <sys/module.h>
38#include <sys/tty.h>
39#include <machine/bus_pio.h>
40#include <machine/bus.h>
41#include <machine/resource.h>
42#include <sys/timepps.h>
43
44#include <dev/pccard/pccardreg.h>
45#include <dev/pccard/pccardvar.h>
46#include <dev/pccard/pccarddevs.h>
47
48#include <dev/uart/uart.h>
49#include <dev/uart/uart_bus.h>
50
51static	int	uart_pccard_match(device_t self);
52static	int	uart_pccard_probe(device_t dev);
53
54static device_method_t uart_pccard_methods[] = {
55	/* Device interface */
56	DEVMETHOD(device_probe,		pccard_compat_probe),
57	DEVMETHOD(device_attach,	pccard_compat_attach),
58	DEVMETHOD(device_detach,	uart_bus_detach),
59
60	/* Card interface */
61	DEVMETHOD(card_compat_match,	uart_pccard_match),
62	DEVMETHOD(card_compat_probe,	uart_pccard_probe),
63	DEVMETHOD(card_compat_attach,	uart_bus_attach),
64
65	{ 0, 0 }
66};
67
68static driver_t uart_pccard_driver = {
69	uart_driver_name,
70	uart_pccard_methods,
71	sizeof(struct uart_softc),
72};
73
74static int
75uart_pccard_match(device_t dev)
76{
77	int		error = 0;
78	u_int32_t	fcn = PCCARD_FUNCTION_UNSPEC;
79
80	error = pccard_get_function(dev, &fcn);
81	if (error != 0)
82		return (error);
83	/*
84	 * If a serial card, we are likely the right driver.  However,
85	 * some serial cards are better servered by other drivers, so
86	 * allow other drivers to claim it, if they want.
87	 */
88	if (fcn == PCCARD_FUNCTION_SERIAL)
89		return (-100);
90
91	return(ENXIO);
92}
93
94static int
95uart_pccard_probe(dev)
96	device_t	dev;
97{
98	struct uart_softc *sc;
99	sc = device_get_softc(dev);
100	sc->sc_class = &uart_ns8250_class;
101
102	/* Do not probe IRQ - pccard doesn't turn on the interrupt line */
103	/* until bus_setup_intr but how can I do so?*/
104	return (uart_bus_probe(dev, 0, 0, 0));
105}
106
107DRIVER_MODULE(uart, pccard, uart_pccard_driver, uart_devclass, 0, 0);
108