1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2012 Adrian Chadd <[email protected]>
5 * All rights reserved.
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE 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 THE 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
38 #include <machine/bus.h>
39
40 #include <dev/uart/uart.h>
41 #include <dev/uart/uart_cpu.h>
42
43 #include <mips/atheros/ar71xxreg.h>
44 #include <mips/atheros/ar71xx_cpudef.h>
45 #include <mips/atheros/ar71xx_bus_space_reversed.h>
46
47 #include <mips/atheros/uart_dev_ar933x.h>
48
49 bus_space_tag_t uart_bus_space_io;
50 bus_space_tag_t uart_bus_space_mem;
51
52 int
uart_cpu_eqres(struct uart_bas * b1,struct uart_bas * b2)53 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
54 {
55 return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
56 }
57
58 int
uart_cpu_getdev(int devtype,struct uart_devinfo * di)59 uart_cpu_getdev(int devtype, struct uart_devinfo *di)
60 {
61 uint64_t freq;
62
63 freq = ar71xx_uart_freq();
64
65 di->ops = uart_getops(&uart_ar933x_class);
66 di->bas.chan = 0;
67 di->bas.bst = ar71xx_bus_space_reversed;
68 di->bas.regshft = 0; /* We'll do "correct" dword addressing here */
69 di->bas.rclk = freq;
70 di->baudrate = 115200;
71 di->databits = 8;
72 di->stopbits = 1;
73
74 di->parity = UART_PARITY_NONE;
75
76 uart_bus_space_io = NULL;
77 uart_bus_space_mem = ar71xx_bus_space_reversed;
78 di->bas.bsh = MIPS_PHYS_TO_KSEG1(AR71XX_UART_ADDR);
79 return (0);
80 }
81