1 /*-
2 * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@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 */
25 #include "opt_uart.h"
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/bus.h>
33 #include <sys/conf.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36
37 #include <machine/bus.h>
38
39 #include <dev/uart/uart.h>
40 #include <dev/uart/uart_cpu.h>
41 #include <dev/uart/uart_bus.h>
42
43 #include <mips/atheros/ar71xxreg.h>
44 #include <mips/atheros/ar71xx_cpudef.h>
45
46 #include "uart_if.h"
47
48 static int uart_ar71xx_probe(device_t dev);
49 extern struct uart_class uart_ar71xx_uart_class;
50
51 static device_method_t uart_ar71xx_methods[] = {
52 /* Device interface */
53 DEVMETHOD(device_probe, uart_ar71xx_probe),
54 DEVMETHOD(device_attach, uart_bus_attach),
55 DEVMETHOD(device_detach, uart_bus_detach),
56 { 0, 0 }
57 };
58
59 static driver_t uart_ar71xx_driver = {
60 uart_driver_name,
61 uart_ar71xx_methods,
62 sizeof(struct uart_softc),
63 };
64
65 extern SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs;
66
67 static int
uart_ar71xx_probe(device_t dev)68 uart_ar71xx_probe(device_t dev)
69 {
70 struct uart_softc *sc;
71 uint64_t freq;
72
73 freq = ar71xx_uart_freq();
74
75 sc = device_get_softc(dev);
76 sc->sc_sysdev = SLIST_FIRST(&uart_sysdevs);
77 sc->sc_class = &uart_ns8250_class;
78 bcopy(&sc->sc_sysdev->bas, &sc->sc_bas, sizeof(sc->sc_bas));
79 sc->sc_sysdev->bas.regshft = 2;
80 sc->sc_sysdev->bas.bst = mips_bus_space_generic;
81 sc->sc_sysdev->bas.bsh = MIPS_PHYS_TO_KSEG1(AR71XX_UART_ADDR) + 3;
82 sc->sc_bas.regshft = 2;
83 sc->sc_bas.bst = mips_bus_space_generic;
84 sc->sc_bas.bsh = MIPS_PHYS_TO_KSEG1(AR71XX_UART_ADDR) + 3;
85
86 return (uart_bus_probe(dev, 2, freq, 0, 0));
87 }
88
89 DRIVER_MODULE(uart, apb, uart_ar71xx_driver, uart_devclass, 0, 0);
90