uart_bus_i81342.c revision 331722 
1/*-
2 * Copyright (c) 2004 Olivier Houchard.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include <sys/cdefs.h>
26__FBSDID("$FreeBSD: stable/11/sys/arm/xscale/i8134x/uart_bus_i81342.c 331722 2018-03-29 02:50:57Z eadler $");
27
28#include <sys/param.h>
29#include <sys/systm.h>
30#include <sys/bus.h>
31#include <sys/conf.h>
32#include <sys/kernel.h>
33#include <sys/module.h>
34#include <machine/bus.h>
35#include <sys/rman.h>
36#include <machine/resource.h>
37
38#include <dev/pci/pcivar.h>
39
40#include <dev/uart/uart.h>
41#include <dev/uart/uart_bus.h>
42#include <dev/uart/uart_cpu.h>
43
44#include <dev/ic/ns16550.h>
45
46#include "uart_if.h"
47
48static int uart_i81342_probe(device_t dev);
49
50static device_method_t uart_i81342_methods[] = {
51	/* Device interface */
52	DEVMETHOD(device_probe,		uart_i81342_probe),
53	DEVMETHOD(device_attach,	uart_bus_attach),
54	DEVMETHOD(device_detach,	uart_bus_detach),
55	{ 0, 0 }
56};
57
58static driver_t uart_i81342_driver = {
59	uart_driver_name,
60	uart_i81342_methods,
61	sizeof(struct uart_softc),
62};
63
64extern SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs;
65static int
66uart_i81342_probe(device_t dev)
67{
68	struct uart_softc *sc;
69	int err;
70
71	sc = device_get_softc(dev);
72	sc->sc_class = &uart_ns8250_class;
73	if (device_get_unit(dev) == 0) {
74		sc->sc_sysdev = SLIST_FIRST(&uart_sysdevs);
75		bcopy(&sc->sc_sysdev->bas, &sc->sc_bas, sizeof(sc->sc_bas));
76	}
77	sc->sc_rres = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT,
78	    &sc->sc_rrid, uart_getrange(sc->sc_class), RF_ACTIVE);
79
80	sc->sc_bas.bsh = rman_get_bushandle(sc->sc_rres);
81	sc->sc_bas.bst = rman_get_bustag(sc->sc_rres);
82	bus_space_write_4(sc->sc_bas.bst, sc->sc_bas.bsh, REG_IER << 2,
83	    0x40 | 0x10);
84        bus_release_resource(dev, sc->sc_rtype, sc->sc_rrid, sc->sc_rres);
85
86	err = uart_bus_probe(dev, 2, 33334000, 0, device_get_unit(dev));
87	sc->sc_rxfifosz = sc->sc_txfifosz = 1;
88	return (err);
89}
90
91
92DRIVER_MODULE(uart, obio, uart_i81342_driver, uart_devclass, 0, 0);
93