1/*-
2 * Copyright (c) 2005 Nate Lawson
3 * Copyright (c) 2000 Munehiro Matsuda
4 * Copyright (c) 2000 Takanori Watanabe
5 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2005 Nate Lawson
3 * Copyright (c) 2000 Munehiro Matsuda
4 * Copyright (c) 2000 Takanori Watanabe
5 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
|
31__FBSDID("$FreeBSD: head/sys/dev/acpica/acpi_cmbat.c 152818 2005-11-26 07:36:53Z njl $");
| 31__FBSDID("$FreeBSD: head/sys/dev/acpica/acpi_cmbat.c 157774 2006-04-15 12:31:34Z iwasaki $");
|
32
33#include "opt_acpi.h"
34#include <sys/param.h>
35#include <sys/kernel.h>
36#include <sys/module.h>
37#include <sys/bus.h>
38#include <sys/ioccom.h>
39
40#include <machine/bus.h>
41#include <sys/rman.h>
42#include <sys/malloc.h>
43
44#include <contrib/dev/acpica/acpi.h>
45#include <dev/acpica/acpivar.h>
46#include <dev/acpica/acpiio.h>
47
48MALLOC_DEFINE(M_ACPICMBAT, "acpicmbat", "ACPI control method battery data");
49
50/* Number of times to retry initialization before giving up. */
51#define ACPI_CMBAT_RETRY_MAX 6
52
53/* Check the battery once a minute. */
54#define CMBAT_POLLRATE (60 * hz)
55
56/* Hooks for the ACPI CA debugging infrastructure */
57#define _COMPONENT ACPI_BATTERY
58ACPI_MODULE_NAME("BATTERY")
59
60#define ACPI_BATTERY_BST_CHANGE 0x80
61#define ACPI_BATTERY_BIF_CHANGE 0x81
62
63struct acpi_cmbat_softc {
64 device_t dev;
65 int flags;
66
67 struct acpi_bif bif;
68 struct acpi_bst bst;
69 struct timespec bst_lastupdated;
70};
71
72ACPI_SERIAL_DECL(cmbat, "ACPI cmbat");
73
74static int acpi_cmbat_probe(device_t dev);
75static int acpi_cmbat_attach(device_t dev);
76static int acpi_cmbat_detach(device_t dev);
77static int acpi_cmbat_resume(device_t dev);
78static void acpi_cmbat_notify_handler(ACPI_HANDLE h, UINT32 notify,
79 void *context);
80static int acpi_cmbat_info_expired(struct timespec *lastupdated);
81static void acpi_cmbat_info_updated(struct timespec *lastupdated);
82static void acpi_cmbat_get_bst(void *arg);
83static void acpi_cmbat_get_bif_task(void *arg);
84static void acpi_cmbat_get_bif(void *arg);
85static int acpi_cmbat_bst(device_t dev, struct acpi_bst *bstp);
86static int acpi_cmbat_bif(device_t dev, struct acpi_bif *bifp);
87static void acpi_cmbat_init_battery(void *arg);
88
89static device_method_t acpi_cmbat_methods[] = {
90 /* Device interface */
91 DEVMETHOD(device_probe, acpi_cmbat_probe),
92 DEVMETHOD(device_attach, acpi_cmbat_attach),
93 DEVMETHOD(device_detach, acpi_cmbat_detach),
94 DEVMETHOD(device_resume, acpi_cmbat_resume),
95
96 /* ACPI battery interface */
97 DEVMETHOD(acpi_batt_get_info, acpi_cmbat_bif),
98 DEVMETHOD(acpi_batt_get_status, acpi_cmbat_bst),
99
100 {0, 0}
101};
102
103static driver_t acpi_cmbat_driver = {
104 "battery",
105 acpi_cmbat_methods,
106 sizeof(struct acpi_cmbat_softc),
107};
108
109static devclass_t acpi_cmbat_devclass;
110DRIVER_MODULE(acpi_cmbat, acpi, acpi_cmbat_driver, acpi_cmbat_devclass, 0, 0);
111MODULE_DEPEND(acpi_cmbat, acpi, 1, 1, 1);
112
113static int
114acpi_cmbat_probe(device_t dev)
115{
116 static char *cmbat_ids[] = { "PNP0C0A", NULL };
117
118 if (acpi_disabled("cmbat") ||
119 ACPI_ID_PROBE(device_get_parent(dev), dev, cmbat_ids) == NULL)
120 return (ENXIO);
121
122 device_set_desc(dev, "ACPI Control Method Battery");
123 return (0);
124}
125
126static int
127acpi_cmbat_attach(device_t dev)
128{
129 int error;
130 ACPI_HANDLE handle;
131 struct acpi_cmbat_softc *sc;
132
133 sc = device_get_softc(dev);
134 handle = acpi_get_handle(dev);
135 sc->dev = dev;
136
137 timespecclear(&sc->bst_lastupdated);
138
139 error = acpi_battery_register(dev);
140 if (error != 0) {
141 device_printf(dev, "registering battery failed\n");
142 return (error);
143 }
144
145 /*
146 * Install a system notify handler in addition to the device notify.
147 * Toshiba notebook uses this alternate notify for its battery.
148 */
149 AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY,
150 acpi_cmbat_notify_handler, dev);
151
152 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_init_battery, dev);
153
154 return (0);
155}
156
157static int
158acpi_cmbat_detach(device_t dev)
159{
160
161 acpi_battery_remove(dev);
| 32
33#include "opt_acpi.h"
34#include <sys/param.h>
35#include <sys/kernel.h>
36#include <sys/module.h>
37#include <sys/bus.h>
38#include <sys/ioccom.h>
39
40#include <machine/bus.h>
41#include <sys/rman.h>
42#include <sys/malloc.h>
43
44#include <contrib/dev/acpica/acpi.h>
45#include <dev/acpica/acpivar.h>
46#include <dev/acpica/acpiio.h>
47
48MALLOC_DEFINE(M_ACPICMBAT, "acpicmbat", "ACPI control method battery data");
49
50/* Number of times to retry initialization before giving up. */
51#define ACPI_CMBAT_RETRY_MAX 6
52
53/* Check the battery once a minute. */
54#define CMBAT_POLLRATE (60 * hz)
55
56/* Hooks for the ACPI CA debugging infrastructure */
57#define _COMPONENT ACPI_BATTERY
58ACPI_MODULE_NAME("BATTERY")
59
60#define ACPI_BATTERY_BST_CHANGE 0x80
61#define ACPI_BATTERY_BIF_CHANGE 0x81
62
63struct acpi_cmbat_softc {
64 device_t dev;
65 int flags;
66
67 struct acpi_bif bif;
68 struct acpi_bst bst;
69 struct timespec bst_lastupdated;
70};
71
72ACPI_SERIAL_DECL(cmbat, "ACPI cmbat");
73
74static int acpi_cmbat_probe(device_t dev);
75static int acpi_cmbat_attach(device_t dev);
76static int acpi_cmbat_detach(device_t dev);
77static int acpi_cmbat_resume(device_t dev);
78static void acpi_cmbat_notify_handler(ACPI_HANDLE h, UINT32 notify,
79 void *context);
80static int acpi_cmbat_info_expired(struct timespec *lastupdated);
81static void acpi_cmbat_info_updated(struct timespec *lastupdated);
82static void acpi_cmbat_get_bst(void *arg);
83static void acpi_cmbat_get_bif_task(void *arg);
84static void acpi_cmbat_get_bif(void *arg);
85static int acpi_cmbat_bst(device_t dev, struct acpi_bst *bstp);
86static int acpi_cmbat_bif(device_t dev, struct acpi_bif *bifp);
87static void acpi_cmbat_init_battery(void *arg);
88
89static device_method_t acpi_cmbat_methods[] = {
90 /* Device interface */
91 DEVMETHOD(device_probe, acpi_cmbat_probe),
92 DEVMETHOD(device_attach, acpi_cmbat_attach),
93 DEVMETHOD(device_detach, acpi_cmbat_detach),
94 DEVMETHOD(device_resume, acpi_cmbat_resume),
95
96 /* ACPI battery interface */
97 DEVMETHOD(acpi_batt_get_info, acpi_cmbat_bif),
98 DEVMETHOD(acpi_batt_get_status, acpi_cmbat_bst),
99
100 {0, 0}
101};
102
103static driver_t acpi_cmbat_driver = {
104 "battery",
105 acpi_cmbat_methods,
106 sizeof(struct acpi_cmbat_softc),
107};
108
109static devclass_t acpi_cmbat_devclass;
110DRIVER_MODULE(acpi_cmbat, acpi, acpi_cmbat_driver, acpi_cmbat_devclass, 0, 0);
111MODULE_DEPEND(acpi_cmbat, acpi, 1, 1, 1);
112
113static int
114acpi_cmbat_probe(device_t dev)
115{
116 static char *cmbat_ids[] = { "PNP0C0A", NULL };
117
118 if (acpi_disabled("cmbat") ||
119 ACPI_ID_PROBE(device_get_parent(dev), dev, cmbat_ids) == NULL)
120 return (ENXIO);
121
122 device_set_desc(dev, "ACPI Control Method Battery");
123 return (0);
124}
125
126static int
127acpi_cmbat_attach(device_t dev)
128{
129 int error;
130 ACPI_HANDLE handle;
131 struct acpi_cmbat_softc *sc;
132
133 sc = device_get_softc(dev);
134 handle = acpi_get_handle(dev);
135 sc->dev = dev;
136
137 timespecclear(&sc->bst_lastupdated);
138
139 error = acpi_battery_register(dev);
140 if (error != 0) {
141 device_printf(dev, "registering battery failed\n");
142 return (error);
143 }
144
145 /*
146 * Install a system notify handler in addition to the device notify.
147 * Toshiba notebook uses this alternate notify for its battery.
148 */
149 AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY,
150 acpi_cmbat_notify_handler, dev);
151
152 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_init_battery, dev);
153
154 return (0);
155}
156
157static int
158acpi_cmbat_detach(device_t dev)
159{
160
161 acpi_battery_remove(dev);
|
| 162 AcpiRemoveNotifyHandler(handle, ACPI_ALL_NOTIFY, acpi_cmbat_notify_handler);
|
162 return (0);
163}
164
165static int
166acpi_cmbat_resume(device_t dev)
167{
168
169 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_init_battery, dev);
170 return (0);
171}
172
173static void
174acpi_cmbat_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
175{
176 struct acpi_cmbat_softc *sc;
177 device_t dev;
178
179 dev = (device_t)context;
180 sc = device_get_softc(dev);
181
182 switch (notify) {
183 case ACPI_NOTIFY_DEVICE_CHECK:
184 case ACPI_BATTERY_BST_CHANGE:
185 /*
186 * Clear the last updated time. The next call to retrieve the
187 * battery status will get the new value for us.
188 */
189 timespecclear(&sc->bst_lastupdated);
190 break;
191 case ACPI_NOTIFY_BUS_CHECK:
192 case ACPI_BATTERY_BIF_CHANGE:
193 /*
194 * Queue a callback to get the current battery info from thread
195 * context. It's not safe to block in a notify handler.
196 */
197 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_get_bif_task, dev);
198 break;
199 }
200
201 acpi_UserNotify("CMBAT", h, notify);
202}
203
204static int
205acpi_cmbat_info_expired(struct timespec *lastupdated)
206{
207 struct timespec curtime;
208
209 ACPI_SERIAL_ASSERT(cmbat);
210
211 if (lastupdated == NULL)
212 return (TRUE);
213 if (!timespecisset(lastupdated))
214 return (TRUE);
215
216 getnanotime(&curtime);
217 timespecsub(&curtime, lastupdated);
218 return (curtime.tv_sec < 0 ||
219 curtime.tv_sec > acpi_battery_get_info_expire());
220}
221
222static void
223acpi_cmbat_info_updated(struct timespec *lastupdated)
224{
225
226 ACPI_SERIAL_ASSERT(cmbat);
227
228 if (lastupdated != NULL)
229 getnanotime(lastupdated);
230}
231
232static void
233acpi_cmbat_get_bst(void *arg)
234{
235 struct acpi_cmbat_softc *sc;
236 ACPI_STATUS as;
237 ACPI_OBJECT *res;
238 ACPI_HANDLE h;
239 ACPI_BUFFER bst_buffer;
240 device_t dev;
241
242 ACPI_SERIAL_ASSERT(cmbat);
243
244 dev = arg;
245 sc = device_get_softc(dev);
246 h = acpi_get_handle(dev);
247 bst_buffer.Pointer = NULL;
248 bst_buffer.Length = ACPI_ALLOCATE_BUFFER;
249
250 if (!acpi_cmbat_info_expired(&sc->bst_lastupdated))
251 goto end;
252
253 as = AcpiEvaluateObject(h, "_BST", NULL, &bst_buffer);
254 if (ACPI_FAILURE(as)) {
255 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
256 "error fetching current battery status -- %s\n",
257 AcpiFormatException(as));
258 goto end;
259 }
260
261 res = (ACPI_OBJECT *)bst_buffer.Pointer;
262 if (!ACPI_PKG_VALID(res, 4)) {
263 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
264 "battery status corrupted\n");
265 goto end;
266 }
267
268 if (acpi_PkgInt32(res, 0, &sc->bst.state) != 0)
269 goto end;
270 if (acpi_PkgInt32(res, 1, &sc->bst.rate) != 0)
271 goto end;
272 if (acpi_PkgInt32(res, 2, &sc->bst.cap) != 0)
273 goto end;
274 if (acpi_PkgInt32(res, 3, &sc->bst.volt) != 0)
275 goto end;
276 acpi_cmbat_info_updated(&sc->bst_lastupdated);
277
278 /* XXX If all batteries are critical, perhaps we should suspend. */
279 if (sc->bst.state & ACPI_BATT_STAT_CRITICAL) {
280 if ((sc->flags & ACPI_BATT_STAT_CRITICAL) == 0) {
281 sc->flags |= ACPI_BATT_STAT_CRITICAL;
282 device_printf(dev, "critically low charge!\n");
283 }
284 } else
285 sc->flags &= ~ACPI_BATT_STAT_CRITICAL;
286
287end:
288 if (bst_buffer.Pointer != NULL)
289 AcpiOsFree(bst_buffer.Pointer);
290}
291
292/* XXX There should be a cleaner way to do this locking. */
293static void
294acpi_cmbat_get_bif_task(void *arg)
295{
296
297 ACPI_SERIAL_BEGIN(cmbat);
298 acpi_cmbat_get_bif(arg);
299 ACPI_SERIAL_END(cmbat);
300}
301
302static void
303acpi_cmbat_get_bif(void *arg)
304{
305 struct acpi_cmbat_softc *sc;
306 ACPI_STATUS as;
307 ACPI_OBJECT *res;
308 ACPI_HANDLE h;
309 ACPI_BUFFER bif_buffer;
310 device_t dev;
311
312 ACPI_SERIAL_ASSERT(cmbat);
313
314 dev = arg;
315 sc = device_get_softc(dev);
316 h = acpi_get_handle(dev);
317 bif_buffer.Pointer = NULL;
318 bif_buffer.Length = ACPI_ALLOCATE_BUFFER;
319
320 as = AcpiEvaluateObject(h, "_BIF", NULL, &bif_buffer);
321 if (ACPI_FAILURE(as)) {
322 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
323 "error fetching current battery info -- %s\n",
324 AcpiFormatException(as));
325 goto end;
326 }
327
328 res = (ACPI_OBJECT *)bif_buffer.Pointer;
329 if (!ACPI_PKG_VALID(res, 13)) {
330 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
331 "battery info corrupted\n");
332 goto end;
333 }
334
335 if (acpi_PkgInt32(res, 0, &sc->bif.units) != 0)
336 goto end;
337 if (acpi_PkgInt32(res, 1, &sc->bif.dcap) != 0)
338 goto end;
339 if (acpi_PkgInt32(res, 2, &sc->bif.lfcap) != 0)
340 goto end;
341 if (acpi_PkgInt32(res, 3, &sc->bif.btech) != 0)
342 goto end;
343 if (acpi_PkgInt32(res, 4, &sc->bif.dvol) != 0)
344 goto end;
345 if (acpi_PkgInt32(res, 5, &sc->bif.wcap) != 0)
346 goto end;
347 if (acpi_PkgInt32(res, 6, &sc->bif.lcap) != 0)
348 goto end;
349 if (acpi_PkgInt32(res, 7, &sc->bif.gra1) != 0)
350 goto end;
351 if (acpi_PkgInt32(res, 8, &sc->bif.gra2) != 0)
352 goto end;
353 if (acpi_PkgStr(res, 9, sc->bif.model, ACPI_CMBAT_MAXSTRLEN) != 0)
354 goto end;
355 if (acpi_PkgStr(res, 10, sc->bif.serial, ACPI_CMBAT_MAXSTRLEN) != 0)
356 goto end;
357 if (acpi_PkgStr(res, 11, sc->bif.type, ACPI_CMBAT_MAXSTRLEN) != 0)
358 goto end;
359 if (acpi_PkgStr(res, 12, sc->bif.oeminfo, ACPI_CMBAT_MAXSTRLEN) != 0)
360 goto end;
361
362end:
363 if (bif_buffer.Pointer != NULL)
364 AcpiOsFree(bif_buffer.Pointer);
365}
366
367static int
368acpi_cmbat_bif(device_t dev, struct acpi_bif *bifp)
369{
370 struct acpi_cmbat_softc *sc;
371
372 sc = device_get_softc(dev);
373
374 /*
375 * Just copy the data. The only value that should change is the
376 * last-full capacity, so we only update when we get a notify that says
377 * the info has changed. Many systems apparently take a long time to
378 * process a _BIF call so we avoid it if possible.
379 */
380 ACPI_SERIAL_BEGIN(cmbat);
381 bifp->units = sc->bif.units;
382 bifp->dcap = sc->bif.dcap;
383 bifp->lfcap = sc->bif.lfcap;
384 bifp->btech = sc->bif.btech;
385 bifp->dvol = sc->bif.dvol;
386 bifp->wcap = sc->bif.wcap;
387 bifp->lcap = sc->bif.lcap;
388 bifp->gra1 = sc->bif.gra1;
389 bifp->gra2 = sc->bif.gra2;
390 strncpy(bifp->model, sc->bif.model, sizeof(sc->bif.model));
391 strncpy(bifp->serial, sc->bif.serial, sizeof(sc->bif.serial));
392 strncpy(bifp->type, sc->bif.type, sizeof(sc->bif.type));
393 strncpy(bifp->oeminfo, sc->bif.oeminfo, sizeof(sc->bif.oeminfo));
394 ACPI_SERIAL_END(cmbat);
395
396 return (0);
397}
398
399static int
400acpi_cmbat_bst(device_t dev, struct acpi_bst *bstp)
401{
402 struct acpi_cmbat_softc *sc;
403
404 sc = device_get_softc(dev);
405
406 ACPI_SERIAL_BEGIN(cmbat);
407 if (acpi_BatteryIsPresent(dev)) {
408 acpi_cmbat_get_bst(dev);
409 bstp->state = sc->bst.state;
410 bstp->rate = sc->bst.rate;
411 bstp->cap = sc->bst.cap;
412 bstp->volt = sc->bst.volt;
413 } else
414 bstp->state = ACPI_BATT_STAT_NOT_PRESENT;
415 ACPI_SERIAL_END(cmbat);
416
417 return (0);
418}
419
420static void
421acpi_cmbat_init_battery(void *arg)
422{
423 struct acpi_cmbat_softc *sc;
424 int retry, valid;
425 device_t dev;
426
427 dev = (device_t)arg;
428 sc = device_get_softc(dev);
429 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
430 "battery initialization start\n");
431
432 /*
433 * Try repeatedly to get valid data from the battery. Since the
434 * embedded controller isn't always ready just after boot, we may have
435 * to wait a while.
436 */
437 for (retry = 0; retry < ACPI_CMBAT_RETRY_MAX; retry++, AcpiOsSleep(10000)) {
| 163 return (0);
164}
165
166static int
167acpi_cmbat_resume(device_t dev)
168{
169
170 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_init_battery, dev);
171 return (0);
172}
173
174static void
175acpi_cmbat_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
176{
177 struct acpi_cmbat_softc *sc;
178 device_t dev;
179
180 dev = (device_t)context;
181 sc = device_get_softc(dev);
182
183 switch (notify) {
184 case ACPI_NOTIFY_DEVICE_CHECK:
185 case ACPI_BATTERY_BST_CHANGE:
186 /*
187 * Clear the last updated time. The next call to retrieve the
188 * battery status will get the new value for us.
189 */
190 timespecclear(&sc->bst_lastupdated);
191 break;
192 case ACPI_NOTIFY_BUS_CHECK:
193 case ACPI_BATTERY_BIF_CHANGE:
194 /*
195 * Queue a callback to get the current battery info from thread
196 * context. It's not safe to block in a notify handler.
197 */
198 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_get_bif_task, dev);
199 break;
200 }
201
202 acpi_UserNotify("CMBAT", h, notify);
203}
204
205static int
206acpi_cmbat_info_expired(struct timespec *lastupdated)
207{
208 struct timespec curtime;
209
210 ACPI_SERIAL_ASSERT(cmbat);
211
212 if (lastupdated == NULL)
213 return (TRUE);
214 if (!timespecisset(lastupdated))
215 return (TRUE);
216
217 getnanotime(&curtime);
218 timespecsub(&curtime, lastupdated);
219 return (curtime.tv_sec < 0 ||
220 curtime.tv_sec > acpi_battery_get_info_expire());
221}
222
223static void
224acpi_cmbat_info_updated(struct timespec *lastupdated)
225{
226
227 ACPI_SERIAL_ASSERT(cmbat);
228
229 if (lastupdated != NULL)
230 getnanotime(lastupdated);
231}
232
233static void
234acpi_cmbat_get_bst(void *arg)
235{
236 struct acpi_cmbat_softc *sc;
237 ACPI_STATUS as;
238 ACPI_OBJECT *res;
239 ACPI_HANDLE h;
240 ACPI_BUFFER bst_buffer;
241 device_t dev;
242
243 ACPI_SERIAL_ASSERT(cmbat);
244
245 dev = arg;
246 sc = device_get_softc(dev);
247 h = acpi_get_handle(dev);
248 bst_buffer.Pointer = NULL;
249 bst_buffer.Length = ACPI_ALLOCATE_BUFFER;
250
251 if (!acpi_cmbat_info_expired(&sc->bst_lastupdated))
252 goto end;
253
254 as = AcpiEvaluateObject(h, "_BST", NULL, &bst_buffer);
255 if (ACPI_FAILURE(as)) {
256 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
257 "error fetching current battery status -- %s\n",
258 AcpiFormatException(as));
259 goto end;
260 }
261
262 res = (ACPI_OBJECT *)bst_buffer.Pointer;
263 if (!ACPI_PKG_VALID(res, 4)) {
264 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
265 "battery status corrupted\n");
266 goto end;
267 }
268
269 if (acpi_PkgInt32(res, 0, &sc->bst.state) != 0)
270 goto end;
271 if (acpi_PkgInt32(res, 1, &sc->bst.rate) != 0)
272 goto end;
273 if (acpi_PkgInt32(res, 2, &sc->bst.cap) != 0)
274 goto end;
275 if (acpi_PkgInt32(res, 3, &sc->bst.volt) != 0)
276 goto end;
277 acpi_cmbat_info_updated(&sc->bst_lastupdated);
278
279 /* XXX If all batteries are critical, perhaps we should suspend. */
280 if (sc->bst.state & ACPI_BATT_STAT_CRITICAL) {
281 if ((sc->flags & ACPI_BATT_STAT_CRITICAL) == 0) {
282 sc->flags |= ACPI_BATT_STAT_CRITICAL;
283 device_printf(dev, "critically low charge!\n");
284 }
285 } else
286 sc->flags &= ~ACPI_BATT_STAT_CRITICAL;
287
288end:
289 if (bst_buffer.Pointer != NULL)
290 AcpiOsFree(bst_buffer.Pointer);
291}
292
293/* XXX There should be a cleaner way to do this locking. */
294static void
295acpi_cmbat_get_bif_task(void *arg)
296{
297
298 ACPI_SERIAL_BEGIN(cmbat);
299 acpi_cmbat_get_bif(arg);
300 ACPI_SERIAL_END(cmbat);
301}
302
303static void
304acpi_cmbat_get_bif(void *arg)
305{
306 struct acpi_cmbat_softc *sc;
307 ACPI_STATUS as;
308 ACPI_OBJECT *res;
309 ACPI_HANDLE h;
310 ACPI_BUFFER bif_buffer;
311 device_t dev;
312
313 ACPI_SERIAL_ASSERT(cmbat);
314
315 dev = arg;
316 sc = device_get_softc(dev);
317 h = acpi_get_handle(dev);
318 bif_buffer.Pointer = NULL;
319 bif_buffer.Length = ACPI_ALLOCATE_BUFFER;
320
321 as = AcpiEvaluateObject(h, "_BIF", NULL, &bif_buffer);
322 if (ACPI_FAILURE(as)) {
323 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
324 "error fetching current battery info -- %s\n",
325 AcpiFormatException(as));
326 goto end;
327 }
328
329 res = (ACPI_OBJECT *)bif_buffer.Pointer;
330 if (!ACPI_PKG_VALID(res, 13)) {
331 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
332 "battery info corrupted\n");
333 goto end;
334 }
335
336 if (acpi_PkgInt32(res, 0, &sc->bif.units) != 0)
337 goto end;
338 if (acpi_PkgInt32(res, 1, &sc->bif.dcap) != 0)
339 goto end;
340 if (acpi_PkgInt32(res, 2, &sc->bif.lfcap) != 0)
341 goto end;
342 if (acpi_PkgInt32(res, 3, &sc->bif.btech) != 0)
343 goto end;
344 if (acpi_PkgInt32(res, 4, &sc->bif.dvol) != 0)
345 goto end;
346 if (acpi_PkgInt32(res, 5, &sc->bif.wcap) != 0)
347 goto end;
348 if (acpi_PkgInt32(res, 6, &sc->bif.lcap) != 0)
349 goto end;
350 if (acpi_PkgInt32(res, 7, &sc->bif.gra1) != 0)
351 goto end;
352 if (acpi_PkgInt32(res, 8, &sc->bif.gra2) != 0)
353 goto end;
354 if (acpi_PkgStr(res, 9, sc->bif.model, ACPI_CMBAT_MAXSTRLEN) != 0)
355 goto end;
356 if (acpi_PkgStr(res, 10, sc->bif.serial, ACPI_CMBAT_MAXSTRLEN) != 0)
357 goto end;
358 if (acpi_PkgStr(res, 11, sc->bif.type, ACPI_CMBAT_MAXSTRLEN) != 0)
359 goto end;
360 if (acpi_PkgStr(res, 12, sc->bif.oeminfo, ACPI_CMBAT_MAXSTRLEN) != 0)
361 goto end;
362
363end:
364 if (bif_buffer.Pointer != NULL)
365 AcpiOsFree(bif_buffer.Pointer);
366}
367
368static int
369acpi_cmbat_bif(device_t dev, struct acpi_bif *bifp)
370{
371 struct acpi_cmbat_softc *sc;
372
373 sc = device_get_softc(dev);
374
375 /*
376 * Just copy the data. The only value that should change is the
377 * last-full capacity, so we only update when we get a notify that says
378 * the info has changed. Many systems apparently take a long time to
379 * process a _BIF call so we avoid it if possible.
380 */
381 ACPI_SERIAL_BEGIN(cmbat);
382 bifp->units = sc->bif.units;
383 bifp->dcap = sc->bif.dcap;
384 bifp->lfcap = sc->bif.lfcap;
385 bifp->btech = sc->bif.btech;
386 bifp->dvol = sc->bif.dvol;
387 bifp->wcap = sc->bif.wcap;
388 bifp->lcap = sc->bif.lcap;
389 bifp->gra1 = sc->bif.gra1;
390 bifp->gra2 = sc->bif.gra2;
391 strncpy(bifp->model, sc->bif.model, sizeof(sc->bif.model));
392 strncpy(bifp->serial, sc->bif.serial, sizeof(sc->bif.serial));
393 strncpy(bifp->type, sc->bif.type, sizeof(sc->bif.type));
394 strncpy(bifp->oeminfo, sc->bif.oeminfo, sizeof(sc->bif.oeminfo));
395 ACPI_SERIAL_END(cmbat);
396
397 return (0);
398}
399
400static int
401acpi_cmbat_bst(device_t dev, struct acpi_bst *bstp)
402{
403 struct acpi_cmbat_softc *sc;
404
405 sc = device_get_softc(dev);
406
407 ACPI_SERIAL_BEGIN(cmbat);
408 if (acpi_BatteryIsPresent(dev)) {
409 acpi_cmbat_get_bst(dev);
410 bstp->state = sc->bst.state;
411 bstp->rate = sc->bst.rate;
412 bstp->cap = sc->bst.cap;
413 bstp->volt = sc->bst.volt;
414 } else
415 bstp->state = ACPI_BATT_STAT_NOT_PRESENT;
416 ACPI_SERIAL_END(cmbat);
417
418 return (0);
419}
420
421static void
422acpi_cmbat_init_battery(void *arg)
423{
424 struct acpi_cmbat_softc *sc;
425 int retry, valid;
426 device_t dev;
427
428 dev = (device_t)arg;
429 sc = device_get_softc(dev);
430 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
431 "battery initialization start\n");
432
433 /*
434 * Try repeatedly to get valid data from the battery. Since the
435 * embedded controller isn't always ready just after boot, we may have
436 * to wait a while.
437 */
438 for (retry = 0; retry < ACPI_CMBAT_RETRY_MAX; retry++, AcpiOsSleep(10000)) {
|
| 439 /* batteries on DOCK can be ejected w/ DOCK during retrying */
440 if (!device_is_attached(dev))
441 return;
442
|
438 if (!acpi_BatteryIsPresent(dev))
439 continue;
440
441 /*
442 * Only query the battery if this is the first try or the specific
443 * type of info is still invalid.
444 */
445 ACPI_SERIAL_BEGIN(cmbat);
446 if (retry == 0 || !acpi_battery_bst_valid(&sc->bst)) {
447 timespecclear(&sc->bst_lastupdated);
448 acpi_cmbat_get_bst(dev);
449 }
450 if (retry == 0 || !acpi_battery_bif_valid(&sc->bif))
451 acpi_cmbat_get_bif(dev);
452
453 valid = acpi_battery_bst_valid(&sc->bst) &&
454 acpi_battery_bif_valid(&sc->bif);
455 ACPI_SERIAL_END(cmbat);
456
457 if (valid)
458 break;
459 }
460
461 if (retry == ACPI_CMBAT_RETRY_MAX) {
462 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
463 "battery initialization failed, giving up\n");
464 } else {
465 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
466 "battery initialization done, tried %d times\n", retry + 1);
467 }
468}
| 443 if (!acpi_BatteryIsPresent(dev))
444 continue;
445
446 /*
447 * Only query the battery if this is the first try or the specific
448 * type of info is still invalid.
449 */
450 ACPI_SERIAL_BEGIN(cmbat);
451 if (retry == 0 || !acpi_battery_bst_valid(&sc->bst)) {
452 timespecclear(&sc->bst_lastupdated);
453 acpi_cmbat_get_bst(dev);
454 }
455 if (retry == 0 || !acpi_battery_bif_valid(&sc->bif))
456 acpi_cmbat_get_bif(dev);
457
458 valid = acpi_battery_bst_valid(&sc->bst) &&
459 acpi_battery_bif_valid(&sc->bif);
460 ACPI_SERIAL_END(cmbat);
461
462 if (valid)
463 break;
464 }
465
466 if (retry == ACPI_CMBAT_RETRY_MAX) {
467 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
468 "battery initialization failed, giving up\n");
469 } else {
470 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
471 "battery initialization done, tried %d times\n", retry + 1);
472 }
473}
|