uart_bus_puc.c

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    1 /*-
    2  * Copyright (c) 2006 Marcel Moolenaar.  All rights reserved.
    3  * Copyright (c) 2002 JF Hay.  All rights reserved.
    4  * Copyright (c) 2001 M. Warner Losh.  All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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/conf.h>
   34 #include <sys/kernel.h>
   35 #include <sys/module.h>
   36 
   37 #include <machine/bus.h>
   38 #include <sys/rman.h>
   39 #include <machine/resource.h>
   40 
   41 #include <dev/puc/puc_bus.h>
   42 
   43 #include <dev/uart/uart.h>
   44 #include <dev/uart/uart_bus.h>
   45 
   46 static int uart_puc_probe(device_t dev);
   47 
   48 static device_method_t uart_puc_methods[] = {
   49         /* Device interface */
   50         DEVMETHOD(device_probe,         uart_puc_probe),
   51         DEVMETHOD(device_attach,        uart_bus_attach),
   52         DEVMETHOD(device_detach,        uart_bus_detach),
   53         /* Serdev interface */
   54         DEVMETHOD(serdev_ihand,         uart_bus_ihand),
   55         DEVMETHOD(serdev_ipend,         uart_bus_ipend),
   56         { 0, 0 }
   57 };
   58 
   59 static driver_t uart_puc_driver = {
   60         uart_driver_name,
   61         uart_puc_methods,
   62         sizeof(struct uart_softc),
   63 };
   64 
   65 static int
   66 uart_puc_probe(device_t dev)
   67 {
   68         device_t parent;
   69         struct uart_softc *sc;
   70         uintptr_t rclk, type;
   71 
   72         parent = device_get_parent(dev);
   73         sc = device_get_softc(dev);
   74 
   75         if (BUS_READ_IVAR(parent, dev, PUC_IVAR_TYPE, &type))
   76                 return (ENXIO);
   77         if (type != PUC_TYPE_SERIAL)
   78                 return (ENXIO);
   79 
   80         sc->sc_class = &uart_ns8250_class;
   81 
   82         if (BUS_READ_IVAR(parent, dev, PUC_IVAR_CLOCK, &rclk))
   83                 rclk = 0;
   84         return (uart_bus_probe(dev, 0, rclk, 0, 0));
   85 }
   86 
   87 DRIVER_MODULE(uart, puc, uart_puc_driver, uart_devclass, 0, 0);

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

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