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acpi_cmbat.c (139057) acpi_cmbat.c (148352)
1/*-
1/*-
2 * Copyright (c) 2005 Nate Lawson
2 * Copyright (c) 2000 Munehiro Matsuda
3 * Copyright (c) 2000 Takanori Watanabe
4 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
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:

--- 9 unchanged lines hidden (view full) ---

19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
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:

--- 9 unchanged lines hidden (view full) ---

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.
27 *
28 * $FreeBSD: head/sys/dev/acpica/acpi_cmbat.c 139057 2004-12-20 05:03:41Z njl $
29 */
30
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: head/sys/dev/acpica/acpi_cmbat.c 148352 2005-07-23 19:36:00Z njl $");
32
31#include "opt_acpi.h"
32#include <sys/param.h>
33#include <sys/kernel.h>
34#include <sys/module.h>
35#include <sys/bus.h>
36#include <sys/ioccom.h>
37
38#include <machine/bus.h>

--- 16 unchanged lines hidden (view full) ---

55#define _COMPONENT ACPI_BATTERY
56ACPI_MODULE_NAME("BATTERY")
57
58#define ACPI_BATTERY_BST_CHANGE 0x80
59#define ACPI_BATTERY_BIF_CHANGE 0x81
60
61struct acpi_cmbat_softc {
62 device_t dev;
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>

--- 16 unchanged lines hidden (view full) ---

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;
63
64 struct acpi_bif bif;
65 struct acpi_bst bst;
66 struct timespec bif_lastupdated;
67 struct timespec bst_lastupdated;
66
67 struct acpi_bif bif;
68 struct acpi_bst bst;
69 struct timespec bif_lastupdated;
70 struct timespec bst_lastupdated;
68
69 int flags;
70 int present;
71 int cap;
72 int min;
73 int full_charge_time;
74 int initializing;
75 int phys_unit;
76};
77
71};
72
78static struct timespec acpi_cmbat_info_lastupdated;
79ACPI_SERIAL_DECL(cmbat, "ACPI cmbat");
80
73ACPI_SERIAL_DECL(cmbat, "ACPI cmbat");
74
81/* XXX: devclass_get_maxunit() don't give us the current allocated units. */
82static int acpi_cmbat_units = 0;
75static int acpi_cmbat_probe(device_t dev);
76static int acpi_cmbat_attach(device_t dev);
77static int acpi_cmbat_detach(device_t dev);
78static int acpi_cmbat_resume(device_t dev);
79static void acpi_cmbat_notify_handler(ACPI_HANDLE h, UINT32 notify,
80 void *context);
81static int acpi_cmbat_info_expired(struct timespec *lastupdated);
82static void acpi_cmbat_info_updated(struct timespec *lastupdated);
83static void acpi_cmbat_get_bst(device_t dev);
84static void acpi_cmbat_get_bif(device_t dev);
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);
83
88
84static int acpi_cmbat_info_expired(struct timespec *);
85static void acpi_cmbat_info_updated(struct timespec *);
86static void acpi_cmbat_get_bst(void *);
87static void acpi_cmbat_get_bif(void *);
88static void acpi_cmbat_notify_handler(ACPI_HANDLE, UINT32, void *);
89static int acpi_cmbat_probe(device_t);
90static int acpi_cmbat_attach(device_t);
91static int acpi_cmbat_detach(device_t);
92static int acpi_cmbat_resume(device_t);
93static int acpi_cmbat_ioctl(u_long, caddr_t, void *);
94static int acpi_cmbat_is_bst_valid(struct acpi_bst*);
95static int acpi_cmbat_is_bif_valid(struct acpi_bif*);
96static int acpi_cmbat_get_total_battinfo(struct acpi_battinfo *);
97static void acpi_cmbat_init_battery(void *);
98
99static device_method_t acpi_cmbat_methods[] = {
100 /* Device interface */
101 DEVMETHOD(device_probe, acpi_cmbat_probe),
102 DEVMETHOD(device_attach, acpi_cmbat_attach),
103 DEVMETHOD(device_detach, acpi_cmbat_detach),
104 DEVMETHOD(device_resume, acpi_cmbat_resume),
105
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
106 {0, 0}
107};
108
109static driver_t acpi_cmbat_driver = {
100 {0, 0}
101};
102
103static driver_t acpi_cmbat_driver = {
110 "acpi_cmbat",
104 "battery",
111 acpi_cmbat_methods,
112 sizeof(struct acpi_cmbat_softc),
113};
114
115static devclass_t acpi_cmbat_devclass;
116DRIVER_MODULE(acpi_cmbat, acpi, acpi_cmbat_driver, acpi_cmbat_devclass, 0, 0);
117MODULE_DEPEND(acpi_cmbat, acpi, 1, 1, 1);
118
119static int
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->bif_lastupdated);
138 timespecclear(&sc->bst_lastupdated);
139
140 error = acpi_battery_register(dev);
141 if (error != 0) {
142 device_printf(dev, "registering battery failed\n");
143 return (error);
144 }
145
146 /*
147 * Install a system notify handler in addition to the device notify.
148 * Toshiba notebook uses this alternate notify for its battery.
149 */
150 AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY,
151 acpi_cmbat_notify_handler, dev);
152
153 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_init_battery, dev);
154
155 return (0);
156}
157
158static int
159acpi_cmbat_detach(device_t dev)
160{
161
162 acpi_battery_remove(dev);
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 /*
184 * Clear the appropriate last updated time. The next call to retrieve
185 * the battery status will get the new value for us. We don't need to
186 * acquire a lock since we are only clearing the time stamp and since
187 * calling _BST/_BIF can trigger a notify, we could deadlock also.
188 */
189 switch (notify) {
190 case ACPI_NOTIFY_DEVICE_CHECK:
191 case ACPI_BATTERY_BST_CHANGE:
192 timespecclear(&sc->bst_lastupdated);
193 break;
194 case ACPI_NOTIFY_BUS_CHECK:
195 case ACPI_BATTERY_BIF_CHANGE:
196 timespecclear(&sc->bif_lastupdated);
197 break;
198 }
199
200 acpi_UserNotify("CMBAT", h, notify);
201}
202
203static int
120acpi_cmbat_info_expired(struct timespec *lastupdated)
121{
122 struct timespec curtime;
123
124 ACPI_SERIAL_ASSERT(cmbat);
125
126 if (lastupdated == NULL)
127 return (TRUE);

--- 12 unchanged lines hidden (view full) ---

140
141 ACPI_SERIAL_ASSERT(cmbat);
142
143 if (lastupdated != NULL)
144 getnanotime(lastupdated);
145}
146
147static void
204acpi_cmbat_info_expired(struct timespec *lastupdated)
205{
206 struct timespec curtime;
207
208 ACPI_SERIAL_ASSERT(cmbat);
209
210 if (lastupdated == NULL)
211 return (TRUE);

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224
225 ACPI_SERIAL_ASSERT(cmbat);
226
227 if (lastupdated != NULL)
228 getnanotime(lastupdated);
229}
230
231static void
148acpi_cmbat_get_bst(void *context)
232acpi_cmbat_get_bst(device_t dev)
149{
233{
150 device_t dev;
151 struct acpi_cmbat_softc *sc;
152 ACPI_STATUS as;
153 ACPI_OBJECT *res;
154 ACPI_HANDLE h;
155 ACPI_BUFFER bst_buffer;
156
157 ACPI_SERIAL_ASSERT(cmbat);
158
234 struct acpi_cmbat_softc *sc;
235 ACPI_STATUS as;
236 ACPI_OBJECT *res;
237 ACPI_HANDLE h;
238 ACPI_BUFFER bst_buffer;
239
240 ACPI_SERIAL_ASSERT(cmbat);
241
159 dev = context;
160 sc = device_get_softc(dev);
161 h = acpi_get_handle(dev);
162 bst_buffer.Pointer = NULL;
163 bst_buffer.Length = ACPI_ALLOCATE_BUFFER;
164
165 if (!acpi_cmbat_info_expired(&sc->bst_lastupdated))
166 goto end;
167

--- 32 unchanged lines hidden (view full) ---

200 sc->flags &= ~ACPI_BATT_STAT_CRITICAL;
201
202end:
203 if (bst_buffer.Pointer != NULL)
204 AcpiOsFree(bst_buffer.Pointer);
205}
206
207static void
242 sc = device_get_softc(dev);
243 h = acpi_get_handle(dev);
244 bst_buffer.Pointer = NULL;
245 bst_buffer.Length = ACPI_ALLOCATE_BUFFER;
246
247 if (!acpi_cmbat_info_expired(&sc->bst_lastupdated))
248 goto end;
249

--- 32 unchanged lines hidden (view full) ---

282 sc->flags &= ~ACPI_BATT_STAT_CRITICAL;
283
284end:
285 if (bst_buffer.Pointer != NULL)
286 AcpiOsFree(bst_buffer.Pointer);
287}
288
289static void
208acpi_cmbat_get_bif(void *context)
290acpi_cmbat_get_bif(device_t dev)
209{
291{
210 device_t dev;
211 struct acpi_cmbat_softc *sc;
212 ACPI_STATUS as;
213 ACPI_OBJECT *res;
214 ACPI_HANDLE h;
215 ACPI_BUFFER bif_buffer;
216
217 ACPI_SERIAL_ASSERT(cmbat);
218
292 struct acpi_cmbat_softc *sc;
293 ACPI_STATUS as;
294 ACPI_OBJECT *res;
295 ACPI_HANDLE h;
296 ACPI_BUFFER bif_buffer;
297
298 ACPI_SERIAL_ASSERT(cmbat);
299
219 dev = context;
220 sc = device_get_softc(dev);
221 h = acpi_get_handle(dev);
222 bif_buffer.Pointer = NULL;
223 bif_buffer.Length = ACPI_ALLOCATE_BUFFER;
224
225 if (!acpi_cmbat_info_expired(&sc->bif_lastupdated))
226 goto end;
227

--- 40 unchanged lines hidden (view full) ---

268 goto end;
269 acpi_cmbat_info_updated(&sc->bif_lastupdated);
270
271end:
272 if (bif_buffer.Pointer != NULL)
273 AcpiOsFree(bif_buffer.Pointer);
274}
275
300 sc = device_get_softc(dev);
301 h = acpi_get_handle(dev);
302 bif_buffer.Pointer = NULL;
303 bif_buffer.Length = ACPI_ALLOCATE_BUFFER;
304
305 if (!acpi_cmbat_info_expired(&sc->bif_lastupdated))
306 goto end;
307

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348 goto end;
349 acpi_cmbat_info_updated(&sc->bif_lastupdated);
350
351end:
352 if (bif_buffer.Pointer != NULL)
353 AcpiOsFree(bif_buffer.Pointer);
354}
355
276static void
277acpi_cmbat_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
278{
279 device_t dev;
280 struct acpi_cmbat_softc *sc;
281
282 dev = (device_t)context;
283 sc = device_get_softc(dev);
284
285 acpi_UserNotify("CMBAT", h, notify);
286
287 /*
288 * Clear the appropriate last updated time. The next call to retrieve
289 * the battery status will get the new value for us. We don't need to
290 * acquire a lock since we are only clearing the time stamp and since
291 * calling _BST/_BIF can trigger a notify, we could deadlock also.
292 */
293 switch (notify) {
294 case ACPI_NOTIFY_DEVICE_CHECK:
295 case ACPI_BATTERY_BST_CHANGE:
296 timespecclear(&sc->bst_lastupdated);
297 break;
298 case ACPI_NOTIFY_BUS_CHECK:
299 case ACPI_BATTERY_BIF_CHANGE:
300 timespecclear(&sc->bif_lastupdated);
301 break;
302 default:
303 break;
304 }
305}
306
307static int
356static int
308acpi_cmbat_probe(device_t dev)
357acpi_cmbat_bif(device_t dev, struct acpi_bif *bifp)
309{
358{
310 static char *cmbat_ids[] = { "PNP0C0A", NULL };
311
312 if (acpi_disabled("cmbat") ||
313 ACPI_ID_PROBE(device_get_parent(dev), dev, cmbat_ids) == NULL)
314 return (ENXIO);
315
316 device_set_desc(dev, "Control Method Battery");
317 return (0);
318}
319
320static int
321acpi_cmbat_attach(device_t dev)
322{
323 int error;
324 ACPI_HANDLE handle;
325 struct acpi_cmbat_softc *sc;
326
327 sc = device_get_softc(dev);
359 struct acpi_cmbat_softc *sc;
360
361 sc = device_get_softc(dev);
328 handle = acpi_get_handle(dev);
329 sc->dev = dev;
330
362
331 /*
332 * Install a system notify handler in addition to the device notify.
333 * Toshiba notebook uses this alternate notify for its battery.
334 */
335 AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY,
336 acpi_cmbat_notify_handler, dev);
337
338 ACPI_SERIAL_BEGIN(cmbat);
363 ACPI_SERIAL_BEGIN(cmbat);
339 timespecclear(&sc->bif_lastupdated);
340 timespecclear(&sc->bst_lastupdated);
341
342 if (acpi_cmbat_units == 0) {
343 error = acpi_register_ioctl(ACPIIO_CMBAT_GET_BIF,
344 acpi_cmbat_ioctl, NULL);
345 if (error != 0) {
346 device_printf(dev, "register bif ioctl failed\n");
347 return (error);
348 }
349 error = acpi_register_ioctl(ACPIIO_CMBAT_GET_BST,
350 acpi_cmbat_ioctl, NULL);
351 if (error != 0) {
352 device_printf(dev, "register bst ioctl failed\n");
353 return (error);
354 }
355 }
356
357 sc->phys_unit = acpi_cmbat_units;
358 error = acpi_battery_register(ACPI_BATT_TYPE_CMBAT, sc->phys_unit);
359 if (error != 0) {
360 device_printf(dev, "registering battery %d failed\n", sc->phys_unit);
361 return (error);
362 }
363 acpi_cmbat_units++;
364 timespecclear(&acpi_cmbat_info_lastupdated);
364 acpi_cmbat_get_bif(dev);
365 bifp->units = sc->bif.units;
366 bifp->dcap = sc->bif.dcap;
367 bifp->lfcap = sc->bif.lfcap;
368 bifp->btech = sc->bif.btech;
369 bifp->dvol = sc->bif.dvol;
370 bifp->wcap = sc->bif.wcap;
371 bifp->lcap = sc->bif.lcap;
372 bifp->gra1 = sc->bif.gra1;
373 bifp->gra2 = sc->bif.gra2;
374 strncpy(bifp->model, sc->bif.model, sizeof(sc->bif.model));
375 strncpy(bifp->serial, sc->bif.serial, sizeof(sc->bif.serial));
376 strncpy(bifp->type, sc->bif.type, sizeof(sc->bif.type));
377 strncpy(bifp->oeminfo, sc->bif.oeminfo, sizeof(sc->bif.oeminfo));
365 ACPI_SERIAL_END(cmbat);
366
378 ACPI_SERIAL_END(cmbat);
379
367 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_init_battery, dev);
368
369 return (0);
370}
371
372static int
380 return (0);
381}
382
383static int
373acpi_cmbat_detach(device_t dev)
384acpi_cmbat_bst(device_t dev, struct acpi_bst *bstp)
374{
375 struct acpi_cmbat_softc *sc;
376
377 sc = device_get_softc(dev);
385{
386 struct acpi_cmbat_softc *sc;
387
388 sc = device_get_softc(dev);
378 ACPI_SERIAL_BEGIN(cmbat);
379 acpi_battery_remove(ACPI_BATT_TYPE_CMBAT, sc->phys_unit);
380 acpi_cmbat_units--;
381 ACPI_SERIAL_END(cmbat);
382 return (0);
383}
384
389
385static int
386acpi_cmbat_resume(device_t dev)
387{
388 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_init_battery, dev);
389 return (0);
390}
391
392static int
393acpi_cmbat_ioctl(u_long cmd, caddr_t addr, void *arg)
394{
395 device_t dev;
396 union acpi_battery_ioctl_arg *ioctl_arg;
397 struct acpi_cmbat_softc *sc;
398 struct acpi_bif *bifp;
399 struct acpi_bst *bstp;
400
401 ioctl_arg = (union acpi_battery_ioctl_arg *)addr;
402 dev = devclass_get_device(acpi_cmbat_devclass, ioctl_arg->unit);
403 if (dev == NULL)
404 return (ENXIO);
405 sc = device_get_softc(dev);
406
407 /*
408 * No security check required: information retrieval only. If
409 * new functions are added here, a check might be required.
410 */
411 ACPI_SERIAL_BEGIN(cmbat);
390 ACPI_SERIAL_BEGIN(cmbat);
412 switch (cmd) {
413 case ACPIIO_CMBAT_GET_BIF:
414 acpi_cmbat_get_bif(dev);
415 bifp = &ioctl_arg->bif;
416 bifp->units = sc->bif.units;
417 bifp->dcap = sc->bif.dcap;
418 bifp->lfcap = sc->bif.lfcap;
419 bifp->btech = sc->bif.btech;
420 bifp->dvol = sc->bif.dvol;
421 bifp->wcap = sc->bif.wcap;
422 bifp->lcap = sc->bif.lcap;
423 bifp->gra1 = sc->bif.gra1;
424 bifp->gra2 = sc->bif.gra2;
425 strncpy(bifp->model, sc->bif.model, sizeof(sc->bif.model));
426 strncpy(bifp->serial, sc->bif.serial, sizeof(sc->bif.serial));
427 strncpy(bifp->type, sc->bif.type, sizeof(sc->bif.type));
428 strncpy(bifp->oeminfo, sc->bif.oeminfo, sizeof(sc->bif.oeminfo));
429 break;
430 case ACPIIO_CMBAT_GET_BST:
431 bstp = &ioctl_arg->bst;
432 if (acpi_BatteryIsPresent(dev)) {
433 acpi_cmbat_get_bst(dev);
434 bstp->state = sc->bst.state;
435 bstp->rate = sc->bst.rate;
436 bstp->cap = sc->bst.cap;
437 bstp->volt = sc->bst.volt;
438 } else {
439 bstp->state = ACPI_BATT_STAT_NOT_PRESENT;
440 }
441 break;
442 default:
443 break;
444 }
391 if (acpi_BatteryIsPresent(dev)) {
392 acpi_cmbat_get_bst(dev);
393 bstp->state = sc->bst.state;
394 bstp->rate = sc->bst.rate;
395 bstp->cap = sc->bst.cap;
396 bstp->volt = sc->bst.volt;
397 } else
398 bstp->state = ACPI_BATT_STAT_NOT_PRESENT;
445 ACPI_SERIAL_END(cmbat);
446
447 return (0);
448}
449
399 ACPI_SERIAL_END(cmbat);
400
401 return (0);
402}
403
450static int
451acpi_cmbat_is_bst_valid(struct acpi_bst *bst)
452{
453 if (bst->state >= ACPI_BATT_STAT_MAX || bst->cap == 0xffffffff ||
454 bst->volt == 0xffffffff)
455 return (FALSE);
456 else
457 return (TRUE);
458}
459
460static int
461acpi_cmbat_is_bif_valid(struct acpi_bif *bif)
462{
463 if (bif->lfcap == 0)
464 return (FALSE);
465 else
466 return (TRUE);
467}
468
469static int
470acpi_cmbat_get_total_battinfo(struct acpi_battinfo *battinfo)
471{
472 int i;
473 int error;
474 int batt_stat;
475 int valid_rate, valid_units;
476 int cap, min;
477 int total_cap, total_min, total_full;
478 struct acpi_cmbat_softc *sc;
479
480 ACPI_SERIAL_ASSERT(cmbat);
481
482 cap = min = -1;
483 batt_stat = ACPI_BATT_STAT_NOT_PRESENT;
484 error = 0;
485
486 /* Get battery status, valid rate and valid units */
487 batt_stat = valid_rate = valid_units = 0;
488 for (i = 0; i < acpi_cmbat_units; i++) {
489 sc = devclass_get_softc(acpi_cmbat_devclass, i);
490 if (sc == NULL)
491 continue;
492 sc->present = acpi_BatteryIsPresent(sc->dev);
493 if (!sc->present)
494 continue;
495 acpi_cmbat_get_bst(sc->dev);
496
497 /* If battery not installed, we get strange values */
498 if (!acpi_cmbat_is_bst_valid(&sc->bst) ||
499 !acpi_cmbat_is_bif_valid(&sc->bif)) {
500 sc->present = FALSE;
501 continue;
502 }
503
504 valid_units++;
505 sc->cap = 100 * sc->bst.cap / sc->bif.lfcap;
506
507 /*
508 * Some laptops report the "design-capacity" instead of the
509 * "real-capacity" when the battery is fully charged.
510 * That breaks the above arithmetic as it needs to be 100% maximum.
511 */
512 if (sc->cap > 100)
513 sc->cap = 100;
514
515 batt_stat |= sc->bst.state;
516
517 /*
518 * XXX Hack to calculate total battery time.
519 *
520 * On systems with more than one battery, they may get used
521 * sequentially, thus bst.rate may only signify the one in use.
522 * For the remaining batteries, bst.rate will be zero, which
523 * makes it impossible to calculate the remaining time. Some
524 * other systems may need the sum of all the bst.rate values
525 * when discharging. Therefore, we sum the bst.rate for valid
526 * batteries (ones in the discharging state) and use the sum
527 * to calculate the total remaining time.
528 */
529 if (sc->bst.rate > 0) {
530 if (sc->bst.state & ACPI_BATT_STAT_DISCHARG)
531 valid_rate += sc->bst.rate;
532 }
533 }
534
535 /* Calculate total battery capacity and time */
536 total_cap = total_min = total_full = 0;
537 for (i = 0; i < acpi_cmbat_units; i++) {
538 sc = devclass_get_softc(acpi_cmbat_devclass, i);
539 if (!sc->present)
540 continue;
541
542 /*
543 * If any batteries are discharging, use the sum of the bst.rate
544 * values. Otherwise, use the full charge time to estimate
545 * remaining time. If neither are available, assume no charge.
546 */
547 if (valid_rate > 0)
548 sc->min = 60 * sc->bst.cap / valid_rate;
549 else if (sc->full_charge_time > 0)
550 sc->min = (sc->full_charge_time * sc->cap) / 100;
551 else
552 sc->min = 0;
553 total_min += sc->min;
554 total_cap += sc->cap;
555 total_full += sc->full_charge_time;
556 }
557
558 /* Battery life */
559 if (valid_units == 0) {
560 cap = -1;
561 batt_stat = ACPI_BATT_STAT_NOT_PRESENT;
562 } else
563 cap = total_cap / valid_units;
564
565 /* Battery time */
566 if (valid_units == 0)
567 min = -1;
568 else if (valid_rate == 0 || (batt_stat & ACPI_BATT_STAT_CHARGING)) {
569 if (total_full == 0)
570 min = -1;
571 else
572 min = (total_full * cap) / 100;
573 } else
574 min = total_min;
575 acpi_cmbat_info_updated(&acpi_cmbat_info_lastupdated);
576
577 battinfo->cap = cap;
578 battinfo->min = min;
579 battinfo->state = batt_stat;
580
581 return (error);
582}
583
584static void
585acpi_cmbat_init_battery(void *arg)
586{
587 struct acpi_cmbat_softc *sc;
404static void
405acpi_cmbat_init_battery(void *arg)
406{
407 struct acpi_cmbat_softc *sc;
588 int retry;
408 int retry, valid;
589 device_t dev;
590
591 dev = (device_t)arg;
592 sc = device_get_softc(dev);
593 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
594 "battery initialization start\n");
595
409 device_t dev;
410
411 dev = (device_t)arg;
412 sc = device_get_softc(dev);
413 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
414 "battery initialization start\n");
415
416 /*
417 * Try repeatedly to get valid data from the battery. Since the
418 * embedded controller isn't always ready just after boot, we may have
419 * to wait a while.
420 */
596 for (retry = 0; retry < ACPI_CMBAT_RETRY_MAX; retry++, AcpiOsSleep(10000)) {
421 for (retry = 0; retry < ACPI_CMBAT_RETRY_MAX; retry++, AcpiOsSleep(10000)) {
597 sc->present = acpi_BatteryIsPresent(dev);
598 if (!sc->present)
422 if (!acpi_BatteryIsPresent(dev))
599 continue;
600
601 ACPI_SERIAL_BEGIN(cmbat);
602 timespecclear(&sc->bst_lastupdated);
603 timespecclear(&sc->bif_lastupdated);
604 acpi_cmbat_get_bst(dev);
605 acpi_cmbat_get_bif(dev);
423 continue;
424
425 ACPI_SERIAL_BEGIN(cmbat);
426 timespecclear(&sc->bst_lastupdated);
427 timespecclear(&sc->bif_lastupdated);
428 acpi_cmbat_get_bst(dev);
429 acpi_cmbat_get_bif(dev);
430 valid = acpi_battery_bst_valid(&sc->bst) &&
431 acpi_battery_bif_valid(&sc->bif);
606 ACPI_SERIAL_END(cmbat);
607
432 ACPI_SERIAL_END(cmbat);
433
608 if (acpi_cmbat_is_bst_valid(&sc->bst) &&
609 acpi_cmbat_is_bif_valid(&sc->bif))
434 if (valid)
610 break;
611 }
612
613 if (retry == ACPI_CMBAT_RETRY_MAX) {
614 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
615 "battery initialization failed, giving up\n");
616 } else {
617 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
618 "battery initialization done, tried %d times\n", retry + 1);
619 }
620}
435 break;
436 }
437
438 if (retry == ACPI_CMBAT_RETRY_MAX) {
439 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
440 "battery initialization failed, giving up\n");
441 } else {
442 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
443 "battery initialization done, tried %d times\n", retry + 1);
444 }
445}
621
622/*
623 * Public interfaces.
624 */
625int
626acpi_cmbat_get_battinfo(int unit, struct acpi_battinfo *battinfo)
627{
628 int error;
629 struct acpi_cmbat_softc *sc;
630
631 ACPI_SERIAL_BEGIN(cmbat);
632 error = acpi_cmbat_get_total_battinfo(battinfo);
633 if (unit == -1 || error)
634 goto out;
635
636 error = ENXIO;
637 if (unit >= acpi_cmbat_units)
638 goto out;
639 if ((sc = devclass_get_softc(acpi_cmbat_devclass, unit)) == NULL)
640 goto out;
641
642 if (!sc->present) {
643 battinfo->cap = -1;
644 battinfo->min = -1;
645 battinfo->state = ACPI_BATT_STAT_NOT_PRESENT;
646 } else {
647 battinfo->cap = sc->cap;
648 battinfo->min = sc->min;
649 battinfo->state = sc->bst.state;
650 }
651 error = 0;
652
653out:
654 ACPI_SERIAL_END(cmbat);
655 return (error);
656}