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 /*
33 * XXXMIPS: This file is hacked from arm/... . XXXMIPS here means this file is
34 * experimental and was written for MIPS32 port.
35 */
36 #include "opt_uart.h"
37
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD: stable/10/sys/mips/idt/uart_cpu_rc32434.c 202175 2010-01-12 21:36:08Z imp $");
40
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/bus.h>
44 #include <sys/cons.h>
45
46 #include <machine/bus.h>
47
48 #include <dev/uart/uart.h>
49 #include <dev/uart/uart_cpu.h>
50
51 extern struct uart_class uart_rc32434_uart_class;
52 bus_space_tag_t uart_bus_space_io;
53 bus_space_tag_t uart_bus_space_mem;
54
55 int
uart_cpu_eqres(struct uart_bas * b1,struct uart_bas * b2)56 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
57 {
58
59 return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
60 }
61
62 int
uart_cpu_getdev(int devtype,struct uart_devinfo * di)63 uart_cpu_getdev(int devtype, struct uart_devinfo *di)
64 {
65 uint32_t maddr;
66
67 if (resource_int_value("uart", 0, "maddr", &maddr) != 0 ||
68 maddr == 0)
69 return (ENXIO);
70
71 /* Got it. Fill in the instance and return it. */
72 di->ops = uart_getops(&uart_ns8250_class);
73 di->bas.chan = 0;
74 di->bas.bst = mips_bus_space_generic;
75 di->bas.regshft = 2;
76 di->bas.rclk = 330000000UL/2; /* IPbus clock */
77 di->baudrate = 115200;
78 di->databits = 8;
79 di->stopbits = 1;
80 di->parity = UART_PARITY_NONE;
81 uart_bus_space_io = 0;
82 uart_bus_space_mem = mips_bus_space_generic;
83 di->bas.bsh = MIPS_PHYS_TO_KSEG1(maddr);
84 return (0);
85 }
86