uart_cpu_mips_xlr.c revision 331722 
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: uart_cpu_mips_xlr.c,v 1.5 2008-07-16 20:22:39 jayachandranc Exp $
27 */
28/*
29 * Skeleton of this file was based on respective code for ARM
30 * code written by Olivier Houchard.
31 */
32/*
33 * XLRMIPS: This file is hacked from arm/...
34 */
35#include "opt_uart.h"
36
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD: stable/11/sys/mips/rmi/uart_cpu_mips_xlr.c 331722 2018-03-29 02:50:57Z eadler $");
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/bus.h>
43#include <sys/cons.h>
44
45#include <machine/bus.h>
46
47#include <dev/uart/uart.h>
48#include <dev/uart/uart_cpu.h>
49#include <sys/kdb.h>
50#include <sys/kernel.h>
51#include <sys/lock.h>
52#include <sys/mutex.h>
53#include <mips/rmi/iomap.h>
54
55bus_space_tag_t uart_bus_space_io;
56bus_space_tag_t uart_bus_space_mem;
57
58int
59uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
60{
61	return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
62}
63
64
65int
66uart_cpu_getdev(int devtype, struct uart_devinfo *di)
67{
68	di->ops = uart_getops(&uart_ns8250_class);
69	di->bas.chan = 0;
70	di->bas.bst = rmi_bus_space;
71	di->bas.bsh = MIPS_PHYS_TO_KSEG1(XLR_UART0ADDR);
72
73	di->bas.regshft = 2;
74	/* divisor = rclk / (baudrate * 16); */
75	di->bas.rclk = 66000000;
76	di->baudrate = 0;
77	di->databits = 8;
78	di->stopbits = 1;
79	di->parity = UART_PARITY_NONE;
80
81	uart_bus_space_io = NULL;
82	uart_bus_space_mem = rmi_bus_space;
83	return (0);
84}
85