The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/mips/idt/uart_bus_rc32434.c

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    1 /*-
    2  * Copyright (c) 2007 Bruce M. Simpson.
    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 AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER 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  * $Id$
   25  */
   26 /*
   27  * Skeleton of this file was based on respective code for ARM
   28  * code written by Olivier Houchard.
   29  */
   30 
   31 /*
   32  * XXXMIPS: This file is hacked from arm/... . XXXMIPS here means this file is
   33  * experimental and was written for MIPS32 port.
   34  */
   35 #include "opt_uart.h"
   36 
   37 #include <sys/cdefs.h>
   38 __FBSDID("$FreeBSD: stable/8/sys/mips/idt/uart_bus_rc32434.c 215938 2010-11-27 12:26:40Z jchandra $");
   39 
   40 #include <sys/param.h>
   41 #include <sys/systm.h>
   42 #include <sys/bus.h>
   43 #include <sys/conf.h>
   44 #include <sys/kernel.h>
   45 #include <sys/module.h>
   46 #include <machine/bus.h>
   47 #include <sys/rman.h>
   48 #include <machine/resource.h>
   49 #include <mips/idt/idtreg.h>
   50 
   51 #include <dev/pci/pcivar.h>
   52 
   53 #include <dev/uart/uart.h>
   54 #include <dev/uart/uart_bus.h>
   55 #include <dev/uart/uart_cpu.h>
   56 
   57 #include <dev/ic/ns16550.h>
   58 
   59 #include "uart_if.h"
   60 
   61 static int uart_rc32434_probe(device_t dev);
   62 
   63 extern struct uart_class uart_rc32434_uart_class;
   64 
   65 static device_method_t uart_rc32434_methods[] = {
   66         /* Device interface */
   67         DEVMETHOD(device_probe,         uart_rc32434_probe),
   68         DEVMETHOD(device_attach,        uart_bus_attach),
   69         DEVMETHOD(device_detach,        uart_bus_detach),
   70         { 0, 0 }
   71 };
   72 
   73 static driver_t uart_rc32434_driver = {
   74         uart_driver_name,
   75         uart_rc32434_methods,
   76         sizeof(struct uart_softc),
   77 };
   78 
   79 extern SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs;
   80 
   81 static int
   82 uart_rc32434_probe(device_t dev)
   83 {
   84         struct uart_softc *sc;
   85 
   86         sc = device_get_softc(dev);
   87         sc->sc_sysdev = SLIST_FIRST(&uart_sysdevs);
   88         sc->sc_class = &uart_ns8250_class;
   89         bcopy(&sc->sc_sysdev->bas, &sc->sc_bas, sizeof(sc->sc_bas));
   90         sc->sc_sysdev->bas.regshft = 2;
   91         sc->sc_sysdev->bas.bst = mips_bus_space_generic;
   92         sc->sc_sysdev->bas.bsh = MIPS_PHYS_TO_KSEG1(IDT_BASE_UART0);
   93         sc->sc_bas.regshft = 2;
   94         sc->sc_bas.bst = mips_bus_space_generic;
   95         sc->sc_bas.bsh = MIPS_PHYS_TO_KSEG1(IDT_BASE_UART0);
   96 
   97         return (uart_bus_probe(dev, 2, 330000000UL/2, 0, 0));
   98 }
   99 
  100 DRIVER_MODULE(uart, obio, uart_rc32434_driver, uart_devclass, 0, 0);

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