xref: /freebsd/sys/dev/ppc/ppc_puc.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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("$FreeBSD$");
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 
48 static int ppc_puc_probe(device_t dev);
49 
50 static 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_setup_intr,	ppc_setup_intr),
59 	DEVMETHOD(bus_teardown_intr,	ppc_teardown_intr),
60 	DEVMETHOD(bus_alloc_resource,	bus_generic_alloc_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 
74 static driver_t ppc_puc_driver = {
75 	ppc_driver_name,
76 	ppc_puc_methods,
77 	sizeof(struct ppc_data),
78 };
79 
80 static int
81 ppc_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 
96 DRIVER_MODULE(ppc, puc, ppc_puc_driver, ppc_devclass, 0, 0);
97