uart_bus_pccard.c revision 150440 
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 150440 2005-09-21 22:45:14Z 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/pccardvar.h>
40
41#include <dev/uart/uart.h>
42#include <dev/uart/uart_bus.h>
43
44#include "pccarddevs.h"
45
46static	int	uart_pccard_probe(device_t dev);
47static	int	uart_pccard_attach(device_t dev);
48
49static device_method_t uart_pccard_methods[] = {
50	/* Device interface */
51	DEVMETHOD(device_probe,		uart_pccard_probe),
52	DEVMETHOD(device_attach,	uart_pccard_attach),
53	DEVMETHOD(device_detach,	uart_bus_detach),
54
55	{ 0, 0 }
56};
57
58static driver_t uart_pccard_driver = {
59	uart_driver_name,
60	uart_pccard_methods,
61	sizeof(struct uart_softc),
62};
63
64static int
65uart_pccard_probe(device_t dev)
66{
67	int		error = 0;
68	u_int32_t	fcn = PCCARD_FUNCTION_UNSPEC;
69
70	error = pccard_get_function(dev, &fcn);
71	if (error != 0)
72		return (error);
73	/*
74	 * If a serial card, we are likely the right driver.  However,
75	 * some serial cards are better servered by other drivers, so
76	 * allow other drivers to claim it, if they want.
77	 */
78	if (fcn == PCCARD_FUNCTION_SERIAL)
79		return (-100);
80
81	return (ENXIO);
82}
83
84static int
85uart_pccard_attach(device_t dev)
86{
87	struct uart_softc *sc;
88	int err;
89
90	sc = device_get_softc(dev);
91	sc->sc_class = &uart_ns8250_class;
92
93	/* Do not probe IRQ - pccard doesn't turn on the interrupt line */
94	/* until bus_setup_intr but how can I do so?*/
95	err = uart_bus_probe(dev, 0, 0, 0, 0);
96	if (err)
97		return (err);
98	return (uart_bus_attach(dev));
99}
100
101DRIVER_MODULE(uart, pccard, uart_pccard_driver, uart_devclass, 0, 0);
102