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


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/arm/xscale/ixp425/uart_bus_ixp425.c

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 2006 Kevin Lo.  All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   23  */
   24 
   25 #include <sys/cdefs.h>
   26 __FBSDID("$FreeBSD$");
   27 
   28 #include <sys/param.h>
   29 #include <sys/systm.h>
   30 #include <sys/bus.h>
   31 #include <sys/conf.h>
   32 #include <sys/kernel.h>
   33 #include <sys/module.h>
   34 #include <machine/bus.h>
   35 #include <sys/rman.h>
   36 #include <machine/resource.h>
   37 
   38 #include <dev/pci/pcivar.h>
   39 #include <dev/ic/ns16550.h>
   40 
   41 #include <dev/uart/uart.h>
   42 #include <dev/uart/uart_bus.h>
   43 #include <dev/uart/uart_cpu.h>
   44 
   45 #include <arm/xscale/ixp425/ixp425reg.h>
   46 #include <arm/xscale/ixp425/ixp425var.h>
   47 
   48 #include "uart_if.h"
   49 
   50 static int uart_ixp425_probe(device_t dev);
   51 
   52 static device_method_t uart_ixp425_methods[] = {
   53         /* Device interface */
   54         DEVMETHOD(device_probe,         uart_ixp425_probe),
   55         DEVMETHOD(device_attach,        uart_bus_attach),
   56         DEVMETHOD(device_detach,        uart_bus_detach),
   57         { 0, 0 }
   58 };
   59 
   60 static driver_t uart_ixp425_driver = {
   61         uart_driver_name,
   62         uart_ixp425_methods,
   63         sizeof(struct uart_softc),
   64 };
   65 DRIVER_MODULE(uart, ixp, uart_ixp425_driver, uart_devclass, 0, 0);
   66 
   67 static int
   68 uart_ixp425_probe(device_t dev)
   69 {
   70         struct uart_softc *sc;
   71 
   72         sc = device_get_softc(dev);
   73         sc->sc_class = &uart_ns8250_class;
   74         sc->sc_rrid = 0;
   75         sc->sc_rtype = SYS_RES_MEMORY;
   76         sc->sc_rres = bus_alloc_resource(dev, sc->sc_rtype, &sc->sc_rrid,
   77             0, ~0, uart_getrange(sc->sc_class), RF_ACTIVE);
   78         if (sc->sc_rres == NULL) {
   79                 return (ENXIO);
   80         }
   81         sc->sc_bas.bsh = rman_get_bushandle(sc->sc_rres);
   82         sc->sc_bas.bst = rman_get_bustag(sc->sc_rres);
   83         /*
   84          * XXX set UART Unit Enable (0x40) AND
   85          *     receiver timeout int enable (0x10).
   86          * The first turns on the UART.  The second is necessary to get
   87          * interrupts when the FIFO has data but is not full.  Note that
   88          * uart_ns8250 carefully avoids touching these bits so we can
   89          * just set them here and proceed.  But this is fragile...
   90          */
   91         bus_space_write_4(sc->sc_bas.bst, sc->sc_bas.bsh, IXP425_UART_IER,
   92             IXP425_UART_IER_UUE | IXP425_UART_IER_RTOIE);
   93         bus_release_resource(dev, sc->sc_rtype, sc->sc_rrid, sc->sc_rres);
   94 
   95         return uart_bus_probe(dev, 0, IXP425_UART_FREQ, 0, 0);
   96 }

Cache object: d78fd16ffb7e86f84ef9781afb9e6eae


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.