sys/mips/malta/uart_cpu_maltausart.c

   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("$FreeBSD$");
  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 }