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/malta/uart_cpu_maltausart.c

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    1 /*-
    2  * Copyright (c) 2006 Wojciech A. Koszek <wkoszek@FreeBSD.org>
    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  * SUCH DAMAGE.
   25  *
   26  * $Id$
   27  */
   28 /*
   29  * Skeleton of this file was based on respective code for ARM
   30  * code written by Olivier Houchard.
   31  */
   32 #include "opt_uart.h"
   33 
   34 #include <sys/cdefs.h>
   35 __FBSDID("$FreeBSD: releng/8.4/sys/mips/malta/uart_cpu_maltausart.c 215938 2010-11-27 12:26:40Z jchandra $");
   36 
   37 #include <sys/param.h>
   38 #include <sys/systm.h>
   39 #include <sys/bus.h>
   40 #include <sys/cons.h>
   41 
   42 #include <machine/bus.h>
   43 
   44 #include <dev/uart/uart.h>
   45 #include <dev/uart/uart_cpu.h>
   46 
   47 #include <mips/malta/maltareg.h>
   48 
   49 bus_space_tag_t uart_bus_space_io;
   50 bus_space_tag_t uart_bus_space_mem;
   51 
   52 extern struct uart_ops malta_usart_ops;
   53 extern struct bus_space malta_bs_tag;
   54 
   55 int
   56 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
   57 {
   58         return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
   59 }
   60 
   61 int
   62 uart_cpu_getdev(int devtype, struct uart_devinfo *di)
   63 {
   64         di->ops = uart_getops(&uart_ns8250_class);
   65         di->bas.chan = 0;
   66         di->bas.bst = mips_bus_space_generic;
   67         di->bas.bsh = MIPS_PHYS_TO_KSEG1(MALTA_UART0ADR);
   68         di->bas.regshft = 0;
   69         di->bas.rclk = 0;
   70         di->baudrate = 0;       /* retain the baudrate configured by YAMON */
   71         di->databits = 8;
   72         di->stopbits = 1;
   73         di->parity = UART_PARITY_NONE;
   74 
   75         uart_bus_space_io = NULL;
   76         uart_bus_space_mem = mips_bus_space_generic;
   77         return (0);
   78 }

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