uart_bus_ebus.c

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    1 /*-
    2  * Copyright (c) 2001 by Thomas Moestl <tmm@FreeBSD.org>.
    3  * 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 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
   18  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   20  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   21  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD$");
   29 
   30 #include <sys/param.h>
   31 #include <sys/systm.h>
   32 #include <sys/bus.h>
   33 #include <sys/kernel.h>
   34 #include <sys/module.h>
   35 
   36 #include <dev/ofw/ofw_bus.h>
   37 
   38 #include <machine/bus.h>
   39 #include <sys/rman.h>
   40 #include <machine/resource.h>
   41 
   42 #include <dev/uart/uart.h>
   43 #include <dev/uart/uart_bus.h>
   44 #include <dev/uart/uart_cpu.h>
   45 
   46 static int uart_ebus_probe(device_t dev);
   47 
   48 static device_method_t uart_ebus_methods[] = {
   49         /* Device interface */
   50         DEVMETHOD(device_probe,         uart_ebus_probe),
   51         DEVMETHOD(device_attach,        uart_bus_attach),
   52         DEVMETHOD(device_detach,        uart_bus_detach),
   53         { 0, 0 }
   54 };
   55 
   56 static driver_t uart_ebus_driver = {
   57         uart_driver_name,
   58         uart_ebus_methods,
   59         sizeof(struct uart_softc),
   60 };
   61 
   62 static int
   63 uart_ebus_probe(device_t dev)
   64 {
   65         const char *nm, *cmpt;
   66         struct uart_softc *sc;
   67         int error;
   68 
   69         sc = device_get_softc(dev);
   70         sc->sc_class = NULL;
   71 
   72         nm = ofw_bus_get_name(dev);
   73         cmpt = ofw_bus_get_compat(dev);
   74         if (!strcmp(nm, "su") || !strcmp(nm, "su_pnp") || (cmpt != NULL &&
   75             (!strcmp(cmpt, "su") || !strcmp(cmpt, "su16550")))) {
   76                 sc->sc_class = &uart_ns8250_class;
   77                 return (uart_bus_probe(dev, 0, 0, 0, 0));
   78         }
   79         if (!strcmp(nm, "se")) {
   80                 sc->sc_class = &uart_sab82532_class;
   81                 error = uart_bus_probe(dev, 0, 0, 0, 1);
   82                 return ((error) ? error : -1);
   83         }
   84 
   85         return (ENXIO);
   86 }
   87 
   88 DRIVER_MODULE(uart, ebus, uart_ebus_driver, uart_devclass, 0, 0);

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

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