xref: /freebsd-12.1/sys/dev/uart/uart_bus_ebus.c (revision 5bf39b8d)
1 /*-
2  * Copyright (c) 2001 by Thomas Moestl <[email protected]>.
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 ``AS IS'' AND ANY EXPRESS OR
15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
18  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
20  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
21  * 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 <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/kernel.h>
34 #include <machine/bus.h>
35 #include <sys/rman.h>
36 #include <machine/resource.h>
37 
38 #include <dev/ofw/openfirm.h>
39 #include <sparc64/ebus/ebusvar.h>
40 
41 #include <dev/uart/uart.h>
42 #include <dev/uart/uart_bus.h>
43 #include <dev/uart/uart_cpu.h>
44 
45 static int uart_ebus_probe(device_t dev);
46 
47 static device_method_t uart_ebus_methods[] = {
48 	/* Device interface */
49 	DEVMETHOD(device_probe,		uart_ebus_probe),
50 	DEVMETHOD(device_attach,	uart_bus_attach),
51 	DEVMETHOD(device_detach,	uart_bus_detach),
52 	{ 0, 0 }
53 };
54 
55 static driver_t uart_ebus_driver = {
56 	uart_driver_name,
57 	uart_ebus_methods,
58 	sizeof(struct uart_softc),
59 };
60 
61 static int
62 uart_ebus_probe(device_t dev)
63 {
64 	const char *nm;
65 	struct uart_softc *sc;
66 	int error;
67 
68 	sc = device_get_softc(dev);
69 	sc->sc_class = NULL;
70 
71 	nm = ebus_get_name(dev);
72 	if (!strcmp(nm, "su")) {
73 		sc->sc_class = &uart_ns8250_class;
74 		return (uart_bus_probe(dev, 0, 0, 0, 0));
75 	}
76 	if (!strcmp(nm, "se")) {
77 		sc->sc_class = &uart_sab82532_class;
78 		error = uart_bus_probe(dev, 0, 0, 0, 1);
79 		return ((error) ? error : -1);
80 	}
81 
82 	return (ENXIO);
83 }
84 
85 DRIVER_MODULE(uart, ebus, uart_ebus_driver, uart_devclass, 0, 0);
86