1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
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 as
12 * the first lines of this file unmodified.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include "opt_kbd.h"
33 #include "opt_evdev.h"
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
39 #include <sys/bus.h>
40
41 #include <machine/bus.h>
42 #include <machine/resource.h>
43 #include <sys/rman.h>
44
45 #include <sys/kbio.h>
46 #include <dev/kbd/kbdreg.h>
47 #include <dev/atkbdc/atkbdreg.h>
48 #include <dev/atkbdc/atkbdcreg.h>
49
50 typedef struct {
51 struct resource *intr;
52 void *ih;
53 } atkbd_softc_t;
54
55 static void atkbdidentify(driver_t *driver, device_t dev);
56 static int atkbdprobe(device_t dev);
57 static int atkbdattach(device_t dev);
58 static int atkbdresume(device_t dev);
59 static void atkbdintr(void *arg);
60
61 static device_method_t atkbd_methods[] = {
62 DEVMETHOD(device_identify, atkbdidentify),
63 DEVMETHOD(device_probe, atkbdprobe),
64 DEVMETHOD(device_attach, atkbdattach),
65 DEVMETHOD(device_resume, atkbdresume),
66 { 0, 0 }
67 };
68
69 static driver_t atkbd_driver = {
70 ATKBD_DRIVER_NAME,
71 atkbd_methods,
72 sizeof(atkbd_softc_t),
73 };
74
75 static void
76 atkbdidentify(driver_t *driver, device_t parent)
77 {
78
79 /* always add at least one child */
80 BUS_ADD_CHILD(parent, KBDC_RID_KBD, driver->name, device_get_unit(parent));
81 }
82
83 static int
84 atkbdprobe(device_t dev)
85 {
86 struct resource *res;
87 u_long irq;
88 int flags;
89 int rid;
90
91 device_set_desc(dev, "AT Keyboard");
92
93 /* obtain parameters */
94 flags = device_get_flags(dev);
95
96 /* see if IRQ is available */
97 rid = KBDC_RID_KBD;
98 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
99 if (res == NULL) {
100 if (bootverbose)
101 device_printf(dev, "unable to allocate IRQ\n");
102 return ENXIO;
103 }
104 irq = rman_get_start(res);
105 bus_release_resource(dev, SYS_RES_IRQ, rid, res);
106
107 /* probe the device */
108 return atkbd_probe_unit(dev, irq, flags);
109 }
110
111 static int
112 atkbdattach(device_t dev)
113 {
114 atkbd_softc_t *sc;
115 keyboard_t *kbd;
116 u_long irq;
117 int flags;
118 int rid;
119 int error;
120
121 sc = device_get_softc(dev);
122
123 rid = KBDC_RID_KBD;
124 irq = bus_get_resource_start(dev, SYS_RES_IRQ, rid);
125 flags = device_get_flags(dev);
126 error = atkbd_attach_unit(dev, &kbd, irq, flags);
127 if (error)
128 return error;
129
130 /* declare our interrupt handler */
131 sc->intr = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
132 if (sc->intr == NULL)
133 return ENXIO;
134 error = bus_setup_intr(dev, sc->intr, INTR_TYPE_TTY, NULL, atkbdintr,
135 kbd, &sc->ih);
136 if (error)
137 bus_release_resource(dev, SYS_RES_IRQ, rid, sc->intr);
138
139 return error;
140 }
141
142 static int
143 atkbdresume(device_t dev)
144 {
145 atkbd_softc_t *sc;
146 keyboard_t *kbd;
147 int args[2];
148
149 sc = device_get_softc(dev);
150 kbd = kbd_get_keyboard(kbd_find_keyboard(ATKBD_DRIVER_NAME,
151 device_get_unit(dev)));
152 if (kbd) {
153 kbd->kb_flags &= ~KB_INITIALIZED;
154 args[0] = device_get_unit(device_get_parent(dev));
155 args[1] = rman_get_start(sc->intr);
156 kbdd_init(kbd, device_get_unit(dev), &kbd, args,
157 device_get_flags(dev));
158 kbdd_clear_state(kbd);
159 }
160 return 0;
161 }
162
163 static void
164 atkbdintr(void *arg)
165 {
166 keyboard_t *kbd;
167
168 kbd = (keyboard_t *)arg;
169 kbdd_intr(kbd, NULL);
170 }
171
172 DRIVER_MODULE(atkbd, atkbdc, atkbd_driver, 0, 0);
173 #ifdef EVDEV_SUPPORT
174 MODULE_DEPEND(atkbd, evdev, 1, 1, 1);
175 #endif
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