freebsd-dev/sys/dev/sio/sio_pccard.c
John-Mark Gurney 9773a00fa7 Only treat positive values as errors...
Pointed out by:	wsk
Message-ID: <45060FC4.2090308@gddsn.org.cn>
2006-09-14 03:47:59 +00:00

101 lines
2.9 KiB
C

/*-
* Copyright (c) 2001 M. Warner Losh. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/module.h>
#include <sys/tty.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/timepps.h>
#include <dev/pccard/pccard_cis.h>
#include <dev/pccard/pccardvar.h>
#include <dev/sio/siovar.h>
static int sio_pccard_attach(device_t dev);
static int sio_pccard_probe(device_t dev);
static device_method_t sio_pccard_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, sio_pccard_probe),
DEVMETHOD(device_attach, sio_pccard_attach),
DEVMETHOD(device_detach, siodetach),
{ 0, 0 }
};
static driver_t sio_pccard_driver = {
sio_driver_name,
sio_pccard_methods,
0,
};
static int
sio_pccard_probe(device_t dev)
{
int error = 0;
u_int32_t fcn = PCCARD_FUNCTION_UNSPEC;
error = pccard_get_function(dev, &fcn);
if (error != 0)
return (error);
/*
* If a serial card, we are likely the right driver. However,
* some serial cards are better servered by other drivers, so
* allow other drivers to claim it, if they want.
*/
if (fcn == PCCARD_FUNCTION_SERIAL)
return (-100);
return (ENXIO);
}
static int
sio_pccard_attach(device_t dev)
{
int err;
#ifdef PC98
SET_FLAG(dev, SET_IFTYPE(COM_IF_MODEM_CARD));
#endif
/* Do not probe IRQ - pccard doesn't turn on the interrupt line */
/* until bus_setup_intr */
if ((err = sioprobe(dev, 0, 0UL, 1)) > 0)
return (err);
return (sioattach(dev, 0, 0UL));
}
DRIVER_MODULE(sio, pccard, sio_pccard_driver, sio_devclass, 0, 0);