FreeBSD/Linux Kernel Cross Reference
sys/mips/cavium/uart_bus_octeonusart.c

     /*-
      * Copyright (c) 2006 Wojciech A. Koszek <wkoszek@FreeBSD.org>
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * $Id$
     */
    /*
     * Skeleton of this file was based on respective code for ARM
     * code written by Olivier Houchard.
     */
    
    /*
     * XXXMIPS: This file is hacked from arm/... . XXXMIPS here means this file is
     * experimental and was written for MIPS32 port.
     */
    #include "opt_uart.h"
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    #include <sys/conf.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <machine/bus.h>
    #include <sys/rman.h>
    #include <machine/resource.h>
    
    #include <dev/pci/pcivar.h>
    
    #include <dev/uart/uart.h>
    #include <dev/uart/uart_bus.h>
    #include <dev/uart/uart_cpu.h>
    
    #include <mips/cavium/octeon_pcmap_regs.h>
    
    #include <contrib/octeon-sdk/cvmx.h>
    
    #include "uart_if.h"
    
    extern struct uart_class uart_oct16550_class;
    
    
    static int uart_octeon_probe(device_t dev);
    static void octeon_uart_identify(driver_t * drv, device_t parent);
    
    extern struct uart_class octeon_uart_class;
    
    static device_method_t uart_octeon_methods[] = {
            /* Device interface */
            DEVMETHOD(device_probe, uart_octeon_probe),
            DEVMETHOD(device_attach, uart_bus_attach),
            DEVMETHOD(device_detach, uart_bus_detach),
            DEVMETHOD(device_identify, octeon_uart_identify),
            {0, 0}
    };
    
    static driver_t uart_octeon_driver = {
            uart_driver_name,
            uart_octeon_methods,
            sizeof(struct uart_softc),
    };
    
    extern 
    SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs;
    
    static int
    uart_octeon_probe(device_t dev)
    {
            struct uart_softc *sc;
            int unit;
    
            unit = device_get_unit(dev);
            sc = device_get_softc(dev);
            sc->sc_class = &uart_oct16550_class;
    
            /*
             * We inherit the settings from the systme console.  Note, the bst
            * bad bus_space_map are bogus here, but obio doesn't yet support
            * them, it seems.
            */
           sc->sc_sysdev = SLIST_FIRST(&uart_sysdevs);
           bcopy(&sc->sc_sysdev->bas, &sc->sc_bas, sizeof(sc->sc_bas));
           sc->sc_bas.bst = uart_bus_space_mem;
           /*
            * XXX
            * RBR isn't really a great base address.
            */
           if (bus_space_map(sc->sc_bas.bst, CVMX_MIO_UARTX_RBR(0),
               uart_getrange(sc->sc_class), 0, &sc->sc_bas.bsh) != 0)
                   return (ENXIO);
           return (uart_bus_probe(dev, sc->sc_bas.regshft, 0, 0, unit));
   }
   
   static void
   octeon_uart_identify(driver_t * drv, device_t parent)
   {
           BUS_ADD_CHILD(parent, 0, "uart", 0);
   }
   
   DRIVER_MODULE(uart, obio, uart_octeon_driver, uart_devclass, 0, 0);

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