1/*-
2 * Copyright (c) 2003 Marcel Moolenaar
3 * Copyright (c) 2006 M. Warner Losh
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
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 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 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
29#include "opt_uart.h"
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD$");
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/bus.h>
37#include <sys/cons.h>
38#include <sys/lock.h>
39#include <sys/mutex.h>
40#include <machine/bus.h>
41
42#include <dev/uart/uart.h>
43#include <dev/uart/uart_bus.h>
44#include <dev/uart/uart_cpu.h>
45
46#include <arm/at91/at91rm92reg.h>
47#include <arm/at91/at91var.h>
48
49bus_space_tag_t uart_bus_space_io;
50bus_space_tag_t uart_bus_space_mem;
51
52extern struct uart_class at91_usart_class;
53extern struct bus_space at91_bs_tag;
54
55int
56uart_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
61int
62uart_cpu_getdev(int devtype, struct uart_devinfo *di)
63{
64	struct uart_class *class;
65
66	class = &at91_usart_class;
67	if (class->uc_rclk == 0 && at91_master_clock != 0)
68		class->uc_rclk = at91_master_clock;
69	di->ops = uart_getops(class);
70	di->bas.chan = 0;
71	di->bas.bst = &at91_bs_tag;
72	/*
73	 * XXX: Not pretty, but will work because we map the needed addresses
74	 * early.
75	 */
76	di->bas.bsh = AT91RM92_BASE + AT91RM92_DBGU_BASE;
77	di->baudrate = 115200;
78	di->bas.regshft = 0;
79	di->bas.rclk = 0;
80	di->databits = 8;
81	di->stopbits = 1;
82	di->parity = UART_PARITY_NONE;
83	uart_bus_space_io = &at91_bs_tag;
84	uart_bus_space_mem = NULL;
85	/* Check the environment for overrides */
86	uart_getenv(devtype, di, class);
87	return (0);
88}
89