ppc_puc.c revision 331722 
1/*-
2 * Copyright (c) 2006 Marcel Moolenaar
3 * Copyright (c) 1997-2000 Nicolas Souchu
4 * Copyright (c) 2001 Alcove - Nicolas Souchu
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 <sys/cdefs.h>
30__FBSDID("$FreeBSD: stable/11/sys/dev/ppc/ppc_puc.c 331722 2018-03-29 02:50:57Z eadler $");
31
32#include <sys/param.h>
33#include <sys/kernel.h>
34#include <sys/module.h>
35#include <sys/bus.h>
36
37#include <machine/bus.h>
38
39#include <dev/puc/puc_bus.h>
40
41#include <dev/ppbus/ppbconf.h>
42#include <dev/ppbus/ppb_msq.h>
43#include <dev/ppc/ppcvar.h>
44#include <dev/ppc/ppcreg.h>
45
46#include "ppbus_if.h"
47
48static int ppc_puc_probe(device_t dev);
49
50static device_method_t ppc_puc_methods[] = {
51	/* device interface */
52	DEVMETHOD(device_probe,		ppc_puc_probe),
53	DEVMETHOD(device_attach,	ppc_attach),
54	DEVMETHOD(device_detach,	ppc_detach),
55
56	/* bus interface */
57	DEVMETHOD(bus_read_ivar,	ppc_read_ivar),
58	DEVMETHOD(bus_write_ivar,	ppc_write_ivar),
59	DEVMETHOD(bus_alloc_resource,	ppc_alloc_resource),
60	DEVMETHOD(bus_release_resource,	ppc_release_resource),
61
62	/* ppbus interface */
63	DEVMETHOD(ppbus_io,		ppc_io),
64	DEVMETHOD(ppbus_exec_microseq,	ppc_exec_microseq),
65	DEVMETHOD(ppbus_reset_epp,	ppc_reset_epp),
66	DEVMETHOD(ppbus_setmode,	ppc_setmode),
67	DEVMETHOD(ppbus_ecp_sync,	ppc_ecp_sync),
68	DEVMETHOD(ppbus_read,		ppc_read),
69	DEVMETHOD(ppbus_write,		ppc_write),
70
71	{ 0, 0 }
72};
73
74static driver_t ppc_puc_driver = {
75	ppc_driver_name,
76	ppc_puc_methods,
77	sizeof(struct ppc_data),
78};
79
80static int
81ppc_puc_probe(device_t dev)
82{
83	device_t parent;
84	uintptr_t type;
85
86	parent = device_get_parent(dev);
87	if (BUS_READ_IVAR(parent, dev, PUC_IVAR_TYPE, &type))
88		return (ENXIO);
89	if (type != PUC_TYPE_PARALLEL)
90		return (ENXIO);
91
92	device_set_desc(dev, "Parallel port");
93	return (ppc_probe(dev, 0));
94}
95
96DRIVER_MODULE(ppc, puc, ppc_puc_driver, ppc_devclass, 0, 0);
97