uart_bus_pccard.c

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    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("$FreeBSD$");
   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 
   46 static  int     uart_pccard_probe(device_t dev);
   47 static  int     uart_pccard_attach(device_t dev);
   48 
   49 static 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 
   58 static driver_t uart_pccard_driver = {
   59         uart_driver_name,
   60         uart_pccard_methods,
   61         sizeof(struct uart_softc),
   62 };
   63 
   64 static int
   65 uart_pccard_probe(device_t dev)
   66 {
   67         int error;
   68         uint32_t fcn;
   69 
   70         fcn = PCCARD_FUNCTION_UNSPEC;
   71         error = pccard_get_function(dev, &fcn);
   72         if (error != 0)
   73                 return (error);
   74         /*
   75          * If a serial card, we are likely the right driver.  However,
   76          * some serial cards are better serviced by other drivers, so
   77          * allow other drivers to claim it, if they want.
   78          */
   79         if (fcn == PCCARD_FUNCTION_SERIAL)
   80                 return (BUS_PROBE_GENERIC);
   81 
   82         return (ENXIO);
   83 }
   84 
   85 static int
   86 uart_pccard_attach(device_t dev)
   87 {
   88         struct uart_softc *sc;
   89         int error;
   90 
   91         sc = device_get_softc(dev);
   92         sc->sc_class = &uart_ns8250_class;
   93 
   94         error = uart_bus_probe(dev, 0, 0, 0, 0);
   95         if (error > 0)
   96                 return (error);
   97         return (uart_bus_attach(dev));
   98 }
   99 
  100 DRIVER_MODULE(uart, pccard, uart_pccard_driver, uart_devclass, 0, 0);

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FreeBSD/Linux Kernel Cross Reference sys/dev/uart/uart_bus_pccard.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/uart/uart_bus_pccard.c