uart_cpu_ec.c revision 201468 
1/*-
2 * Copyright (C) 2009 Yohanes Nugroho <yohanes@gmail.com>
3 * All rights reserved.
4 *
5 * Developed by Semihalf.
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 * 3. Neither the name of MARVELL nor the names of contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include "opt_uart.h"
33
34#include <sys/cdefs.h>
35__FBSDID("$FreeBSD: head/sys/arm/econa/uart_cpu_ec.c 201468 2010-01-04 03:35:45Z rpaulo $");
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/bus.h>
40#include <sys/cons.h>
41
42#include <machine/bus.h>
43
44#include <dev/uart/uart.h>
45#include <dev/uart/uart_cpu.h>
46
47#include <sys/rman.h>
48
49#include <arm/econa/econa_reg.h>
50#include <arm/econa/econa_var.h>
51
52bus_space_tag_t uart_bus_space_io;
53bus_space_tag_t uart_bus_space_mem;
54
55int
56uart_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
62int
63uart_cpu_getdev(int devtype, struct uart_devinfo *di)
64{
65	struct uart_class *class = &uart_ns8250_class;
66
67	di->ops = uart_getops(class);
68	di->bas.chan = 0;
69	di->bas.bst = obio_tag;
70
71	if (bus_space_map(di->bas.bst, ECONA_IO_BASE + ECONA_UART_BASE,
72	    ECONA_UART_SIZE,
73	    0, &di->bas.bsh) != 0) {
74		return (ENXIO);
75	}
76
77	di->baudrate = 0;
78	di->bas.regshft = EC_UART_REGSHIFT;
79	di->bas.rclk = EC_UART_CLOCK ;
80	di->databits = 8;
81	di->stopbits = 1;
82	di->parity = UART_PARITY_NONE;
83	uart_bus_space_mem = obio_tag;
84	uart_bus_space_io = NULL;
85
86	return (0);
87}
88