FreeBSD/Linux Kernel Cross Reference
sys/isa/atkbdc_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/atkbdc_isa.c,v 1.29.2.1 2004/11/07 22:33:06 njl 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 #include <sys/malloc.h>
38 #include <machine/bus_pio.h>
39 #include <machine/bus.h>
40 #include <machine/resource.h>
41 #include <sys/rman.h>
42
43 #include <dev/kbd/atkbdcreg.h>
44
45 #include <isa/isareg.h>
46 #include <isa/isavar.h>
47
48 static MALLOC_DEFINE(M_ATKBDDEV, "atkbddev", "AT Keyboard device");
49
50 /* children */
51 typedef struct atkbdc_device {
52 struct resource_list resources;
53 int rid;
54 u_int32_t vendorid;
55 u_int32_t serial;
56 u_int32_t logicalid;
57 u_int32_t compatid;
58 } atkbdc_device_t;
59
60 /* kbdc */
61 static devclass_t atkbdc_devclass;
62
63 static int atkbdc_probe(device_t dev);
64 static int atkbdc_attach(device_t dev);
65 static device_t atkbdc_add_child(device_t bus, int order, char *name,
66 int unit);
67 static int atkbdc_print_child(device_t bus, device_t dev);
68 static int atkbdc_read_ivar(device_t bus, device_t dev, int index,
69 uintptr_t *val);
70 static int atkbdc_write_ivar(device_t bus, device_t dev, int index,
71 uintptr_t val);
72 static struct resource_list
73 *atkbdc_get_resource_list (device_t bus, device_t dev);
74 static struct resource
75 *atkbdc_alloc_resource(device_t bus, device_t dev, int type,
76 int *rid, u_long start, u_long end,
77 u_long count, u_int flags);
78 static int atkbdc_release_resource(device_t bus, device_t dev, int type,
79 int rid, struct resource *res);
80
81 static device_method_t atkbdc_methods[] = {
82 DEVMETHOD(device_probe, atkbdc_probe),
83 DEVMETHOD(device_attach, atkbdc_attach),
84 DEVMETHOD(device_suspend, bus_generic_suspend),
85 DEVMETHOD(device_resume, bus_generic_resume),
86
87 DEVMETHOD(bus_add_child, atkbdc_add_child),
88 DEVMETHOD(bus_print_child, atkbdc_print_child),
89 DEVMETHOD(bus_read_ivar, atkbdc_read_ivar),
90 DEVMETHOD(bus_write_ivar, atkbdc_write_ivar),
91 DEVMETHOD(bus_get_resource_list,atkbdc_get_resource_list),
92 DEVMETHOD(bus_alloc_resource, atkbdc_alloc_resource),
93 DEVMETHOD(bus_release_resource, atkbdc_release_resource),
94 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
95 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
96 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
97 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
98 DEVMETHOD(bus_delete_resource, bus_generic_rl_delete_resource),
99 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
100 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
101
102 { 0, 0 }
103 };
104
105 static driver_t atkbdc_driver = {
106 ATKBDC_DRIVER_NAME,
107 atkbdc_methods,
108 sizeof(atkbdc_softc_t *),
109 };
110
111 static struct isa_pnp_id atkbdc_ids[] = {
112 { 0x0303d041, "Keyboard controller (i8042)" }, /* PNP0303 */
113 { 0 }
114 };
115
116 static int
117 atkbdc_probe(device_t dev)
118 {
119 struct resource *port0;
120 struct resource *port1;
121 u_long start;
122 u_long count;
123 int error;
124 int rid;
125
126 /* check PnP IDs */
127 if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
128 return ENXIO;
129
130 device_set_desc(dev, "Keyboard controller (i8042)");
131
132 /*
133 * Adjust I/O port resources.
134 * The AT keyboard controller uses two ports (a command/data port
135 * 0x60 and a status port 0x64), which may be given to us in
136 * one resource (0x60 through 0x64) or as two separate resources
137 * (0x60 and 0x64). Furthermore, /boot/device.hints may contain
138 * just one port, 0x60. We shall adjust resource settings
139 * so that these two ports are available as two separate resources.
140 */
141 device_quiet(dev);
142 rid = 0;
143 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &start, &count) != 0)
144 return ENXIO;
145 if (count > 1) /* adjust the count */
146 bus_set_resource(dev, SYS_RES_IOPORT, rid, start, 1);
147 port0 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
148 if (port0 == NULL)
149 return ENXIO;
150 rid = 1;
151 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, NULL, NULL) != 0)
152 bus_set_resource(dev, SYS_RES_IOPORT, 1,
153 start + KBD_STATUS_PORT, 1);
154 port1 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
155 if (port1 == NULL) {
156 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
157 return ENXIO;
158 }
159 device_verbose(dev);
160
161 error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
162 if (error == 0)
163 bus_generic_probe(dev);
164
165 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
166 bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
167
168 return error;
169 }
170
171 static int
172 atkbdc_attach(device_t dev)
173 {
174 atkbdc_softc_t *sc;
175 int unit;
176 int error;
177 int rid;
178
179 unit = device_get_unit(dev);
180 sc = *(atkbdc_softc_t **)device_get_softc(dev);
181 if (sc == NULL) {
182 /*
183 * We have to maintain two copies of the kbdc_softc struct,
184 * as the low-level console needs to have access to the
185 * keyboard controller before kbdc is probed and attached.
186 * kbdc_soft[] contains the default entry for that purpose.
187 * See atkbdc.c. XXX
188 */
189 sc = atkbdc_get_softc(unit);
190 if (sc == NULL)
191 return ENOMEM;
192 }
193
194 rid = 0;
195 sc->port0 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
196 RF_ACTIVE);
197 if (sc->port0 == NULL)
198 return ENXIO;
199 rid = 1;
200 sc->port1 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
201 RF_ACTIVE);
202 if (sc->port1 == NULL) {
203 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
204 return ENXIO;
205 }
206
207 error = atkbdc_attach_unit(unit, sc, sc->port0, sc->port1);
208 if (error) {
209 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
210 bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->port1);
211 return error;
212 }
213 *(atkbdc_softc_t **)device_get_softc(dev) = sc;
214
215 bus_generic_attach(dev);
216
217 return 0;
218 }
219
220 static device_t
221 atkbdc_add_child(device_t bus, int order, char *name, int unit)
222 {
223 atkbdc_device_t *ivar;
224 device_t child;
225 int t;
226
227 ivar = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV,
228 M_NOWAIT | M_ZERO);
229 if (!ivar)
230 return NULL;
231
232 child = device_add_child_ordered(bus, order, name, unit);
233 if (child == NULL) {
234 free(ivar, M_ATKBDDEV);
235 return child;
236 }
237
238 resource_list_init(&ivar->resources);
239 ivar->rid = order;
240
241 /*
242 * If the device is not created by the PnP BIOS or ACPI,
243 * refer to device hints for IRQ.
244 */
245 if (ISA_PNP_PROBE(device_get_parent(bus), bus, atkbdc_ids) != 0) {
246 if (resource_int_value(name, unit, "irq", &t) != 0)
247 t = -1;
248 } else {
249 t = bus_get_resource_start(bus, SYS_RES_IRQ, ivar->rid);
250 }
251 if (t > 0)
252 resource_list_add(&ivar->resources, SYS_RES_IRQ, ivar->rid,
253 t, t, 1);
254
255 if (resource_disabled(name, unit))
256 device_disable(child);
257
258 device_set_ivars(child, ivar);
259
260 return child;
261 }
262
263 static int
264 atkbdc_print_child(device_t bus, device_t dev)
265 {
266 atkbdc_device_t *kbdcdev;
267 u_long irq;
268 int flags;
269 int retval = 0;
270
271 kbdcdev = (atkbdc_device_t *)device_get_ivars(dev);
272
273 retval += bus_print_child_header(bus, dev);
274 flags = device_get_flags(dev);
275 if (flags != 0)
276 retval += printf(" flags 0x%x", flags);
277 irq = bus_get_resource_start(dev, SYS_RES_IRQ, kbdcdev->rid);
278 if (irq != 0)
279 retval += printf(" irq %ld", irq);
280 retval += bus_print_child_footer(bus, dev);
281
282 return (retval);
283 }
284
285 static int
286 atkbdc_read_ivar(device_t bus, device_t dev, int index, uintptr_t *val)
287 {
288 atkbdc_device_t *ivar;
289
290 ivar = (atkbdc_device_t *)device_get_ivars(dev);
291 switch (index) {
292 case KBDC_IVAR_VENDORID:
293 *val = (u_long)ivar->vendorid;
294 break;
295 case KBDC_IVAR_SERIAL:
296 *val = (u_long)ivar->serial;
297 break;
298 case KBDC_IVAR_LOGICALID:
299 *val = (u_long)ivar->logicalid;
300 break;
301 case KBDC_IVAR_COMPATID:
302 *val = (u_long)ivar->compatid;
303 break;
304 default:
305 return ENOENT;
306 }
307 return 0;
308 }
309
310 static int
311 atkbdc_write_ivar(device_t bus, device_t dev, int index, uintptr_t val)
312 {
313 atkbdc_device_t *ivar;
314
315 ivar = (atkbdc_device_t *)device_get_ivars(dev);
316 switch (index) {
317 case KBDC_IVAR_VENDORID:
318 ivar->vendorid = (u_int32_t)val;
319 break;
320 case KBDC_IVAR_SERIAL:
321 ivar->serial = (u_int32_t)val;
322 break;
323 case KBDC_IVAR_LOGICALID:
324 ivar->logicalid = (u_int32_t)val;
325 break;
326 case KBDC_IVAR_COMPATID:
327 ivar->compatid = (u_int32_t)val;
328 break;
329 default:
330 return ENOENT;
331 }
332 return 0;
333 }
334
335 static struct resource_list
336 *atkbdc_get_resource_list (device_t bus, device_t dev)
337 {
338 atkbdc_device_t *ivar;
339
340 ivar = (atkbdc_device_t *)device_get_ivars(dev);
341 return &ivar->resources;
342 }
343
344 static struct resource
345 *atkbdc_alloc_resource(device_t bus, device_t dev, int type, int *rid,
346 u_long start, u_long end, u_long count, u_int flags)
347 {
348 atkbdc_device_t *ivar;
349
350 ivar = (atkbdc_device_t *)device_get_ivars(dev);
351 return resource_list_alloc(&ivar->resources, bus, dev, type, rid,
352 start, end, count, flags);
353 }
354
355 static int
356 atkbdc_release_resource(device_t bus, device_t dev, int type, int rid,
357 struct resource *res)
358 {
359 atkbdc_device_t *ivar;
360
361 ivar = (atkbdc_device_t *)device_get_ivars(dev);
362 return resource_list_release(&ivar->resources, bus, dev, type, rid,
363 res);
364 }
365
366 DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0);
367 DRIVER_MODULE(atkbdc, acpi, atkbdc_driver, atkbdc_devclass, 0, 0);
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