uart_cpu_maltausart.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2006 Wojciech A. Koszek <wkoszek@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $Id$
29 */
30/*
31 * Skeleton of this file was based on respective code for ARM
32 * code written by Olivier Houchard.
33 */
34#include "opt_uart.h"
35
36#include <sys/cdefs.h>
37__FBSDID("$FreeBSD: stable/11/sys/mips/malta/uart_cpu_maltausart.c 330897 2018-03-14 03:19:51Z eadler $");
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/bus.h>
42#include <sys/cons.h>
43
44#include <machine/bus.h>
45
46#include <dev/uart/uart.h>
47#include <dev/uart/uart_cpu.h>
48
49#include <mips/malta/maltareg.h>
50
51bus_space_tag_t uart_bus_space_io;
52bus_space_tag_t uart_bus_space_mem;
53
54extern struct uart_ops malta_usart_ops;
55extern struct bus_space malta_bs_tag;
56
57int
58uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
59{
60	return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
61}
62
63int
64uart_cpu_getdev(int devtype, struct uart_devinfo *di)
65{
66	di->ops = uart_getops(&uart_ns8250_class);
67	di->bas.chan = 0;
68	di->bas.bst = mips_bus_space_generic;
69	di->bas.bsh = MIPS_PHYS_TO_KSEG1(MALTA_UART0ADR);
70	di->bas.regshft = 0;
71	di->bas.rclk = 0;
72	di->baudrate = 0;	/* retain the baudrate configured by YAMON */
73	di->databits = 8;
74	di->stopbits = 1;
75	di->parity = UART_PARITY_NONE;
76
77	uart_bus_space_io = NULL;
78	uart_bus_space_mem = mips_bus_space_generic;
79	return (0);
80}
81