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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: src/sys/isa/atkbd_isa.c,v 1.17 2004/05/30 20:27:16 phk Exp $");
29
30 #include "opt_kbd.h"
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/bus.h>
37
38 #include <machine/bus.h>
39 #include <machine/resource.h>
40 #include <sys/rman.h>
41
42 #include <sys/kbio.h>
43 #include <dev/kbd/kbdreg.h>
44 #include <dev/kbd/atkbdreg.h>
45 #include <dev/kbd/atkbdcreg.h>
46
47 #include <isa/isareg.h>
48 #include <isa/isavar.h>
49
50 typedef struct {
51 struct resource *intr;
52 void *ih;
53 } atkbd_softc_t;
54
55 static devclass_t atkbd_devclass;
56
57 static void atkbdidentify(driver_t *driver, device_t dev);
58 static int atkbdprobe(device_t dev);
59 static int atkbdattach(device_t dev);
60 static int atkbdresume(device_t dev);
61 static void atkbd_isa_intr(void *arg);
62
63 static device_method_t atkbd_methods[] = {
64 DEVMETHOD(device_identify, atkbdidentify),
65 DEVMETHOD(device_probe, atkbdprobe),
66 DEVMETHOD(device_attach, atkbdattach),
67 DEVMETHOD(device_resume, atkbdresume),
68 { 0, 0 }
69 };
70
71 static driver_t atkbd_driver = {
72 ATKBD_DRIVER_NAME,
73 atkbd_methods,
74 sizeof(atkbd_softc_t),
75 };
76
77 static void
78 atkbdidentify(driver_t *driver, device_t parent)
79 {
80
81 /* always add at least one child */
82 BUS_ADD_CHILD(parent, KBDC_RID_KBD, driver->name, device_get_unit(parent));
83 }
84
85 static int
86 atkbdprobe(device_t dev)
87 {
88 struct resource *res;
89 u_long irq;
90 int flags;
91 int rid;
92
93 device_set_desc(dev, "AT Keyboard");
94
95 /* obtain parameters */
96 flags = device_get_flags(dev);
97
98 /* see if IRQ is available */
99 rid = KBDC_RID_KBD;
100 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
101 RF_SHAREABLE | RF_ACTIVE);
102 if (res == NULL) {
103 if (bootverbose)
104 device_printf(dev, "unable to allocate IRQ\n");
105 return ENXIO;
106 }
107 irq = rman_get_start(res);
108 bus_release_resource(dev, SYS_RES_IRQ, rid, res);
109
110 /* probe the device */
111 return atkbd_probe_unit(device_get_unit(dev),
112 device_get_unit(device_get_parent(dev)),
113 irq, flags);
114 }
115
116 static int
117 atkbdattach(device_t dev)
118 {
119 atkbd_softc_t *sc;
120 keyboard_t *kbd;
121 u_long irq;
122 int flags;
123 int rid;
124 int error;
125
126 sc = device_get_softc(dev);
127
128 rid = KBDC_RID_KBD;
129 irq = bus_get_resource_start(dev, SYS_RES_IRQ, rid);
130 flags = device_get_flags(dev);
131 error = atkbd_attach_unit(device_get_unit(dev), &kbd,
132 device_get_unit(device_get_parent(dev)),
133 irq, flags);
134 if (error)
135 return error;
136
137 /* declare our interrupt handler */
138 sc->intr = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
139 RF_SHAREABLE | RF_ACTIVE);
140 if (sc->intr == NULL)
141 return ENXIO;
142 error = bus_setup_intr(dev, sc->intr, INTR_TYPE_TTY, atkbd_isa_intr,
143 kbd, &sc->ih);
144 if (error)
145 bus_release_resource(dev, SYS_RES_IRQ, rid, sc->intr);
146
147 return error;
148 }
149
150 static int
151 atkbdresume(device_t dev)
152 {
153 atkbd_softc_t *sc;
154 keyboard_t *kbd;
155 int args[2];
156
157 sc = device_get_softc(dev);
158 kbd = kbd_get_keyboard(kbd_find_keyboard(ATKBD_DRIVER_NAME,
159 device_get_unit(dev)));
160 if (kbd) {
161 kbd->kb_flags &= ~KB_INITIALIZED;
162 args[0] = device_get_unit(device_get_parent(dev));
163 args[1] = rman_get_start(sc->intr);
164 (*kbdsw[kbd->kb_index]->init)(device_get_unit(dev), &kbd,
165 args, device_get_flags(dev));
166 (*kbdsw[kbd->kb_index]->clear_state)(kbd);
167 }
168 return 0;
169 }
170
171 static void
172 atkbd_isa_intr(void *arg)
173 {
174 keyboard_t *kbd;
175
176 kbd = (keyboard_t *)arg;
177 (*kbdsw[kbd->kb_index]->intr)(kbd, NULL);
178 }
179
180 DRIVER_MODULE(atkbd, atkbdc, atkbd_driver, atkbd_devclass, 0, 0);
Cache object: 8424203e7a9f98408896a1433f39080b
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