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

     /*-
      * Copyright (c) 2004 Marcel Moolenaar
      * 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 ``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 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 <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    #include <sys/kernel.h>
    #include <machine/bus.h>
    
    #include <gdb/gdb.h>
    
    #include <dev/uart/uart.h>
    #include <dev/uart/uart_cpu.h>
    
    static gdb_probe_f uart_dbg_probe;
    static gdb_init_f uart_dbg_init;
    static gdb_term_f uart_dbg_term;
    static gdb_getc_f uart_dbg_getc;
    static gdb_checkc_f uart_dbg_checkc;
    static gdb_putc_f uart_dbg_putc;
    
    GDB_DBGPORT(uart, uart_dbg_probe, uart_dbg_init, uart_dbg_term,
        uart_dbg_checkc, uart_dbg_getc, uart_dbg_putc);
    
    static struct uart_devinfo uart_dbgport;
    
    static int
    uart_dbg_probe(void)
    {
    
            if (uart_cpu_getdev(UART_DEV_DBGPORT, &uart_dbgport))
                    return (-1);
    
            if (uart_probe(&uart_dbgport))
                    return (-1);
    
            return (0);
    }
    
    static void
    uart_dbg_init(void)
    {
    
            uart_dbgport.type = UART_DEV_DBGPORT;
            uart_add_sysdev(&uart_dbgport);
            uart_init(&uart_dbgport);
    }
    
    static void
    uart_dbg_term(void)
    {
    
            uart_term(&uart_dbgport);
    }
    
    static void
    uart_dbg_putc(int c)
    {
    
            uart_putc(&uart_dbgport, c);
    }
    
    static int
    uart_dbg_checkc(void)
    {
    
            return (uart_poll(&uart_dbgport));
    }
    
    static int
    uart_dbg_getc(void)
    {
    
           return (uart_getc(&uart_dbgport));
   }

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