1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2006 Marcel Moolenaar. All rights reserved.
5 * Copyright (c) 2002 JF Hay. All rights reserved.
6 * Copyright (c) 2001 M. Warner Losh <imp@FreeBSD.org>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/bus.h>
32 #include <sys/conf.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
35
36 #include <machine/bus.h>
37 #include <sys/rman.h>
38 #include <machine/resource.h>
39
40 #include <dev/puc/puc_bus.h>
41
42 #include <dev/uart/uart.h>
43 #include <dev/uart/uart_bus.h>
44
45 static int uart_puc_probe(device_t dev);
46
47 static device_method_t uart_puc_methods[] = {
48 /* Device interface */
49 DEVMETHOD(device_probe, uart_puc_probe),
50 DEVMETHOD(device_attach, uart_bus_attach),
51 DEVMETHOD(device_detach, uart_bus_detach),
52 /* Serdev interface */
53 DEVMETHOD(serdev_ihand, uart_bus_ihand),
54 DEVMETHOD(serdev_ipend, uart_bus_ipend),
55 { 0, 0 }
56 };
57
58 static driver_t uart_puc_driver = {
59 uart_driver_name,
60 uart_puc_methods,
61 sizeof(struct uart_softc),
62 };
63
64 static int
uart_puc_probe(device_t dev)65 uart_puc_probe(device_t dev)
66 {
67 device_t parent;
68 struct uart_softc *sc;
69 uintptr_t rclk, type;
70
71 parent = device_get_parent(dev);
72 sc = device_get_softc(dev);
73
74 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_TYPE, &type))
75 return (ENXIO);
76 if (type != PUC_TYPE_SERIAL)
77 return (ENXIO);
78
79 sc->sc_class = &uart_ns8250_class;
80
81 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_CLOCK, &rclk))
82 rclk = 0;
83 return (uart_bus_probe(dev, 0, 0, rclk, 0, 0, 0));
84 }
85
86 DRIVER_MODULE(uart, puc, uart_puc_driver, 0, 0);
87