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("$FreeBSD$");
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
55 bus_space_tag_t uart_bus_space_io;
56 bus_space_tag_t uart_bus_space_mem;
57
58 int
uart_cpu_eqres(struct uart_bas * b1,struct uart_bas * b2)59 uart_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
65 int
uart_cpu_getdev(int devtype,struct uart_devinfo * di)66 uart_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