uart_bus_pccard.c revision 120871 
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 120871 2003-10-07 04:26:14Z imp $");
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/module.h>
35#include <machine/bus.h>
36#include <machine/resource.h>
37
38#include <dev/pccard/pccard_cis.h>
39#include <dev/pccard/pccarddevs.h>
40#include <dev/pccard/pccardreg.h>
41#include <dev/pccard/pccardvar.h>
42
43#include <dev/uart/uart.h>
44#include <dev/uart/uart_bus.h>
45
46static	int	uart_pccard_match(device_t self);
47static	int	uart_pccard_probe(device_t dev);
48
49static device_method_t uart_pccard_methods[] = {
50	/* Device interface */
51	DEVMETHOD(device_probe,		pccard_compat_probe),
52	DEVMETHOD(device_attach,	pccard_compat_attach),
53	DEVMETHOD(device_detach,	uart_bus_detach),
54
55	/* Card interface */
56	DEVMETHOD(card_compat_match,	uart_pccard_match),
57	DEVMETHOD(card_compat_probe,	uart_pccard_probe),
58	DEVMETHOD(card_compat_attach,	uart_bus_attach),
59
60	{ 0, 0 }
61};
62
63static driver_t uart_pccard_driver = {
64	uart_driver_name,
65	uart_pccard_methods,
66	sizeof(struct uart_softc),
67};
68
69static int
70uart_pccard_match(device_t dev)
71{
72	int		error = 0;
73	u_int32_t	fcn = PCCARD_FUNCTION_UNSPEC;
74
75	error = pccard_get_function(dev, &fcn);
76	if (error != 0)
77		return (error);
78	/*
79	 * If a serial card, we are likely the right driver.  However,
80	 * some serial cards are better servered by other drivers, so
81	 * allow other drivers to claim it, if they want.
82	 */
83	if (fcn == PCCARD_FUNCTION_SERIAL)
84		return (-100);
85
86	return(ENXIO);
87}
88
89static int
90uart_pccard_probe(dev)
91	device_t	dev;
92{
93	struct uart_softc *sc;
94	sc = device_get_softc(dev);
95	sc->sc_class = &uart_ns8250_class;
96
97	/* Do not probe IRQ - pccard doesn't turn on the interrupt line */
98	/* until bus_setup_intr but how can I do so?*/
99	return (uart_bus_probe(dev, 0, 0, 0, 0));
100}
101
102DRIVER_MODULE(uart, pccard, uart_pccard_driver, uart_devclass, 0, 0);
103