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

     /*-
      * Copyright (C) 2007 MARVELL INTERNATIONAL LTD.
      * All rights reserved.
      *
      * Developed by Semihalf.
      *
      * 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.
     * 3. Neither the name of MARVELL nor the names of contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY 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 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
     * SUCH DAMAGE.
     */
    
    #include "opt_uart.h"
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/8.4/sys/dev/uart/uart_cpu_mv.c 194072 2009-06-12 20:00:38Z marcel $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    #include <sys/cons.h>
    
    #include <machine/bus.h>
    
    #include <dev/uart/uart.h>
    #include <dev/uart/uart_cpu.h>
    
    #include <arm/mv/mvreg.h>
    #include <arm/mv/mvvar.h>
    #include <arm/mv/mvwin.h>
    
    bus_space_tag_t uart_bus_space_io;
    bus_space_tag_t uart_bus_space_mem;
    
    int
    uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
    {
    
            return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
    }
    
    int
    uart_cpu_getdev(int devtype, struct uart_devinfo *di)
    {
            struct uart_class *class = &uart_ns8250_class;
    
            /*
             * If env specification for UART exists it takes precedence:
             * hw.uart.console="mm:0xf1012000" or similar
             */
            if (uart_getenv(devtype, di, class) == 0)
                    return (0);
            /*
             * Fall back to default UART0 console settings
             */
            di->ops = uart_getops(class);
            di->bas.chan = 0;
            di->bas.bst = obio_tag;
            if (bus_space_map(di->bas.bst, MV_UART0_BASE, MV_UART_SIZE,
                0, &di->bas.bsh) != 0)
                    return (ENXIO);
    
            di->baudrate = 0;
            di->bas.regshft = 2;
            di->bas.rclk = get_tclk();
            di->databits = 8;
            di->stopbits = 1;
            di->parity = UART_PARITY_NONE;
            uart_bus_space_mem = obio_tag;
            uart_bus_space_io = NULL;
    
            return (0);
    }

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