atkbd_atkbdc.c revision 58271 
1/*-
2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
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 as
10 *    the first lines of this file unmodified.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/dev/atkbdc/atkbd_atkbdc.c 58271 2000-03-19 03:25:13Z yokota $
27 */
28
29#include "opt_kbd.h"
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/kernel.h>
34#include <sys/bus.h>
35
36#include <machine/bus.h>
37#include <machine/resource.h>
38#include <sys/rman.h>
39
40#include <dev/kbd/kbdreg.h>
41#include <dev/kbd/atkbdreg.h>
42#include <dev/kbd/atkbdcreg.h>
43
44#include <isa/isareg.h>
45#include <isa/isavar.h>
46
47typedef struct {
48	struct resource	*intr;
49	void		*ih;
50} atkbd_softc_t;
51
52devclass_t	atkbd_devclass;
53
54static int	atkbdprobe(device_t dev);
55static int	atkbdattach(device_t dev);
56static void	atkbd_isa_intr(void *arg);
57
58static device_method_t atkbd_methods[] = {
59	DEVMETHOD(device_probe,		atkbdprobe),
60	DEVMETHOD(device_attach,	atkbdattach),
61	{ 0, 0 }
62};
63
64static driver_t atkbd_driver = {
65	ATKBD_DRIVER_NAME,
66	atkbd_methods,
67	sizeof(atkbd_softc_t),
68};
69
70static int
71atkbdprobe(device_t dev)
72{
73	uintptr_t irq;
74	uintptr_t flags;
75
76	device_set_desc(dev, "AT Keyboard");
77
78	/* obtain parameters */
79	BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_IRQ, &irq);
80	BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_FLAGS, &flags);
81
82	/* probe the device */
83	return atkbd_probe_unit(device_get_unit(dev),
84				device_get_unit(device_get_parent(dev)),
85				irq, flags);
86}
87
88static int
89atkbdattach(device_t dev)
90{
91	atkbd_softc_t *sc;
92	keyboard_t *kbd;
93	uintptr_t irq;
94	uintptr_t flags;
95	int rid;
96	int error;
97
98	sc = device_get_softc(dev);
99
100	BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_IRQ, &irq);
101	BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_FLAGS, &flags);
102
103	error = atkbd_attach_unit(device_get_unit(dev), &kbd,
104				  device_get_unit(device_get_parent(dev)),
105				  irq, flags);
106	if (error)
107		return error;
108
109	/* declare our interrupt handler */
110	rid = 0;
111	sc->intr = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, irq, irq, 1,
112				      RF_SHAREABLE | RF_ACTIVE);
113	BUS_SETUP_INTR(device_get_parent(dev), dev, sc->intr, INTR_TYPE_TTY,
114		       atkbd_isa_intr, kbd, &sc->ih);
115
116	return 0;
117}
118
119static void
120atkbd_isa_intr(void *arg)
121{
122	keyboard_t *kbd;
123
124	kbd = (keyboard_t *)arg;
125	(*kbdsw[kbd->kb_index]->intr)(kbd, NULL);
126}
127
128DRIVER_MODULE(atkbd, atkbdc, atkbd_driver, atkbd_devclass, 0, 0);
129