FreeBSD/Linux Kernel Cross Reference
sys/isa/atkbd_isa.c
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 * $FreeBSD$
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 <sys/kbio.h>
41 #include <dev/kbd/kbdreg.h>
42 #include <dev/kbd/atkbdreg.h>
43 #include <dev/kbd/atkbdcreg.h>
44
45 #include <isa/isareg.h>
46 #include <isa/isavar.h>
47
48 typedef struct {
49 struct resource *intr;
50 void *ih;
51 } atkbd_softc_t;
52
53 devclass_t atkbd_devclass;
54
55 static int atkbdprobe(device_t dev);
56 static int atkbdattach(device_t dev);
57 static int atkbdresume(device_t dev);
58 static void atkbd_isa_intr(void *arg);
59
60 static device_method_t atkbd_methods[] = {
61 DEVMETHOD(device_probe, atkbdprobe),
62 DEVMETHOD(device_attach, atkbdattach),
63 DEVMETHOD(device_resume, atkbdresume),
64 { 0, 0 }
65 };
66
67 static driver_t atkbd_driver = {
68 ATKBD_DRIVER_NAME,
69 atkbd_methods,
70 sizeof(atkbd_softc_t),
71 };
72
73 static int
74 atkbdprobe(device_t dev)
75 {
76 uintptr_t irq;
77 uintptr_t flags;
78
79 device_set_desc(dev, "AT Keyboard");
80
81 /* obtain parameters */
82 BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_IRQ, &irq);
83 BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_FLAGS, &flags);
84
85 /* probe the device */
86 return atkbd_probe_unit(device_get_unit(dev),
87 device_get_unit(device_get_parent(dev)),
88 irq, flags);
89 }
90
91 static int
92 atkbdattach(device_t dev)
93 {
94 atkbd_softc_t *sc;
95 keyboard_t *kbd;
96 uintptr_t irq;
97 uintptr_t flags;
98 int rid;
99 int error;
100
101 sc = device_get_softc(dev);
102
103 BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_IRQ, &irq);
104 BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_FLAGS, &flags);
105
106 error = atkbd_attach_unit(device_get_unit(dev), &kbd,
107 device_get_unit(device_get_parent(dev)),
108 irq, flags);
109 if (error)
110 return error;
111
112 /* declare our interrupt handler */
113 rid = 0;
114 sc->intr = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, irq, irq, 1,
115 RF_SHAREABLE | RF_ACTIVE);
116 BUS_SETUP_INTR(device_get_parent(dev), dev, sc->intr, INTR_TYPE_TTY,
117 atkbd_isa_intr, kbd, &sc->ih);
118
119 return 0;
120 }
121
122 static int
123 atkbdresume(device_t dev)
124 {
125 keyboard_t *kbd;
126
127 kbd = kbd_get_keyboard(kbd_find_keyboard(ATKBD_DRIVER_NAME,
128 device_get_unit(dev)));
129 if (kbd)
130 (*kbdsw[kbd->kb_index]->clear_state)(kbd);
131 return 0;
132 }
133
134 static void
135 atkbd_isa_intr(void *arg)
136 {
137 keyboard_t *kbd;
138
139 kbd = (keyboard_t *)arg;
140 (*kbdsw[kbd->kb_index]->intr)(kbd, NULL);
141 }
142
143 DRIVER_MODULE(atkbd, atkbdc, atkbd_driver, atkbd_devclass, 0, 0);
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