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freebsd/sys/dev/uart/uart_bus_pccard.c
Marcel Moolenaar 3a45066f19 o Style(9) nits
o  Fix typo in comment
o  s/-100/BUS_PROBE_GENERIC/
o  s/err/error/ for consistency
o  Remove non-applicable comment
o  Allow uart_bus_probe() to return the predefined BUS_PROBE_*
   contants. In this case: explicitly test for error > 0.
2005-10-28 06:27:53 +00:00

101 lines
2.9 KiB
C

/*-
* Copyright (c) 2001 M. Warner Losh. All rights reserved.
* Copyright (c) 2003 Norikatsu Shigemura, Takenori Watanabe 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/module.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <dev/pccard/pccard_cis.h>
#include <dev/pccard/pccardvar.h>
#include <dev/uart/uart.h>
#include <dev/uart/uart_bus.h>
#include "pccarddevs.h"
static int uart_pccard_probe(device_t dev);
static int uart_pccard_attach(device_t dev);
static device_method_t uart_pccard_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, uart_pccard_probe),
DEVMETHOD(device_attach, uart_pccard_attach),
DEVMETHOD(device_detach, uart_bus_detach),
{ 0, 0 }
};
static driver_t uart_pccard_driver = {
uart_driver_name,
uart_pccard_methods,
sizeof(struct uart_softc),
};
static int
uart_pccard_probe(device_t dev)
{
int error;
uint32_t fcn;
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 serviced by other drivers, so
* allow other drivers to claim it, if they want.
*/
if (fcn == PCCARD_FUNCTION_SERIAL)
return (BUS_PROBE_GENERIC);
return (ENXIO);
}
static int
uart_pccard_attach(device_t dev)
{
struct uart_softc *sc;
int error;
sc = device_get_softc(dev);
sc->sc_class = &uart_ns8250_class;
error = uart_bus_probe(dev, 0, 0, 0, 0);
if (error > 0)
return (error);
return (uart_bus_attach(dev));
}
DRIVER_MODULE(uart, pccard, uart_pccard_driver, uart_devclass, 0, 0);