1 /*-
2 * Copyright (c) 2012 Adrian Chadd <adrian@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 */
27 #include "opt_uart.h"
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD: stable/10/sys/mips/atheros/uart_cpu_ar933x.c 253509 2013-07-21 03:54:39Z adrian $");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/bus.h>
35
36 #include <machine/bus.h>
37
38 #include <dev/uart/uart.h>
39 #include <dev/uart/uart_cpu.h>
40
41 #include <mips/atheros/ar71xxreg.h>
42 #include <mips/atheros/ar71xx_cpudef.h>
43 #include <mips/atheros/ar71xx_bus_space_reversed.h>
44
45 #include <mips/atheros/uart_dev_ar933x.h>
46
47 bus_space_tag_t uart_bus_space_io;
48 bus_space_tag_t uart_bus_space_mem;
49
50 int
uart_cpu_eqres(struct uart_bas * b1,struct uart_bas * b2)51 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
52 {
53 return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
54 }
55
56 int
uart_cpu_getdev(int devtype,struct uart_devinfo * di)57 uart_cpu_getdev(int devtype, struct uart_devinfo *di)
58 {
59 uint64_t freq;
60
61 freq = ar71xx_uart_freq();
62
63 di->ops = uart_getops(&uart_ar933x_class);
64 di->bas.chan = 0;
65 di->bas.bst = ar71xx_bus_space_reversed;
66 di->bas.regshft = 0; /* We'll do "correct" dword addressing here */
67 di->bas.rclk = freq;
68 di->baudrate = 115200;
69 di->databits = 8;
70 di->stopbits = 1;
71
72 di->parity = UART_PARITY_NONE;
73
74 uart_bus_space_io = NULL;
75 uart_bus_space_mem = ar71xx_bus_space_reversed;
76 di->bas.bsh = MIPS_PHYS_TO_KSEG1(AR71XX_UART_ADDR);
77 return (0);
78 }
79