2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
37 #include <sys/malloc.h>
38 #include <machine/resource.h>
40 #include <machine/bus.h>
42 #include <dev/atkbdc/atkbdc_subr.h>
43 #include <dev/atkbdc/atkbdcreg.h>
45 #include <isa/isareg.h>
46 #include <isa/isavar.h>
48 static int atkbdc_isa_probe(device_t dev);
49 static int atkbdc_isa_attach(device_t dev);
50 static device_t atkbdc_isa_add_child(device_t bus, int order, char *name,
53 static device_method_t atkbdc_isa_methods[] = {
54 DEVMETHOD(device_probe, atkbdc_isa_probe),
55 DEVMETHOD(device_attach, atkbdc_isa_attach),
56 DEVMETHOD(device_suspend, bus_generic_suspend),
57 DEVMETHOD(device_resume, bus_generic_resume),
59 DEVMETHOD(bus_add_child, atkbdc_isa_add_child),
60 DEVMETHOD(bus_print_child, atkbdc_print_child),
61 DEVMETHOD(bus_read_ivar, atkbdc_read_ivar),
62 DEVMETHOD(bus_write_ivar, atkbdc_write_ivar),
63 DEVMETHOD(bus_get_resource_list,atkbdc_get_resource_list),
64 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
65 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
66 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
67 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
68 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
69 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
70 DEVMETHOD(bus_delete_resource, bus_generic_rl_delete_resource),
71 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
72 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
77 static driver_t atkbdc_isa_driver = {
80 sizeof(atkbdc_softc_t *),
83 static struct isa_pnp_id atkbdc_ids[] = {
84 { 0x0303d041, "Keyboard controller (i8042)" }, /* PNP0303 */
89 atkbdc_isa_probe(device_t dev)
91 struct resource *port0;
92 struct resource *port1;
99 bus_space_handle_t ioh1;
105 if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
108 device_set_desc(dev, "Keyboard controller (i8042)");
111 * Adjust I/O port resources.
112 * The AT keyboard controller uses two ports (a command/data port
113 * 0x60 and a status port 0x64), which may be given to us in
114 * one resource (0x60 through 0x64) or as two separate resources
115 * (0x60 and 0x64). Some brain-damaged ACPI BIOS has reversed
116 * command/data port and status port. Furthermore, /boot/device.hints
117 * may contain just one port, 0x60. We shall adjust resource settings
118 * so that these two ports are available as two separate resources
123 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &start, &count) != 0)
125 if (start == IO_KBD + KBD_STATUS_PORT) {
129 if (count > 1) /* adjust the count and/or start port */
130 bus_set_resource(dev, SYS_RES_IOPORT, rid, start, 1);
131 port0 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
135 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, NULL, NULL) != 0)
136 bus_set_resource(dev, SYS_RES_IOPORT, 1,
137 start + KBD_STATUS_PORT, 1);
138 port1 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
140 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
144 #if defined(__i386__)
146 * Check if we really have AT keyboard controller. Poll status
147 * register until we get "all clear" indication. If no such
148 * indication comes, it probably means that there is no AT
149 * keyboard controller present. Give up in such case. Check relies
150 * on the fact that reading from non-existing in/out port returns
151 * 0xff on i386. May or may not be true on other platforms.
153 tag = rman_get_bustag(port0);
154 ioh1 = rman_get_bushandle(port1);
155 flags = intr_disable();
156 for (i = 0; i != 65535; i++) {
157 if ((bus_space_read_1(tag, ioh1, 0) & 0x2) == 0)
162 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
163 bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
170 error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
172 bus_generic_probe(dev);
174 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
175 bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
181 atkbdc_isa_attach(device_t dev)
188 unit = device_get_unit(dev);
189 sc = *(atkbdc_softc_t **)device_get_softc(dev);
192 * We have to maintain two copies of the kbdc_softc struct,
193 * as the low-level console needs to have access to the
194 * keyboard controller before kbdc is probed and attached.
195 * kbdc_soft[] contains the default entry for that purpose.
198 sc = atkbdc_get_softc(unit);
204 sc->port0 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
206 if (sc->port0 == NULL)
209 sc->port1 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
211 if (sc->port1 == NULL) {
212 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
216 error = atkbdc_attach_unit(unit, sc, sc->port0, sc->port1);
218 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
219 bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->port1);
222 *(atkbdc_softc_t **)device_get_softc(dev) = sc;
224 bus_generic_attach(dev);
230 atkbdc_isa_add_child(device_t bus, int order, char *name, int unit)
232 atkbdc_device_t *ivar;
236 ivar = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV,
241 child = device_add_child_ordered(bus, order, name, unit);
243 free(ivar, M_ATKBDDEV);
247 resource_list_init(&ivar->resources);
251 * If the device is not created by the PnP BIOS or ACPI,
252 * refer to device hints for IRQ.
254 if (ISA_PNP_PROBE(device_get_parent(bus), bus, atkbdc_ids) != 0) {
255 if (resource_int_value(name, unit, "irq", &t) != 0)
258 t = bus_get_resource_start(bus, SYS_RES_IRQ, ivar->rid);
261 resource_list_add(&ivar->resources, SYS_RES_IRQ, ivar->rid,
264 if (resource_disabled(name, unit))
265 device_disable(child);
267 device_set_ivars(child, ivar);
272 DRIVER_MODULE(atkbdc, isa, atkbdc_isa_driver, atkbdc_devclass, 0, 0);
273 DRIVER_MODULE(atkbdc, acpi, atkbdc_isa_driver, atkbdc_devclass, 0, 0);