2 * Copyright (c) 2001 Mitsuru IWASAKI
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.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
32 #include <sys/condvar.h>
34 #include <sys/fcntl.h>
35 #include <sys/kernel.h>
36 #include <sys/malloc.h>
37 #include <sys/module.h>
39 #include <sys/sysctl.h>
44 #include <contrib/dev/acpica/include/acpi.h>
46 #include <dev/acpica/acpivar.h>
47 #include <dev/acpica/acpiio.h>
49 #include <machine/nexusvar.h>
52 * APM driver emulation
55 #include <machine/apm_bios.h>
56 #include <machine/pc/bios.h>
58 #include <i386/bios/apm.h>
60 SYSCTL_DECL(_debug_acpi);
62 uint32_t acpi_resume_beep;
63 TUNABLE_INT("debug.acpi.resume_beep", &acpi_resume_beep);
64 SYSCTL_UINT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RW, &acpi_resume_beep,
65 0, "Beep the PC speaker when resuming");
66 uint32_t acpi_reset_video;
67 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
69 static int intr_model = ACPI_INTR_PIC;
70 static int apm_active;
71 static struct clonedevs *apm_clones;
73 MALLOC_DEFINE(M_APMDEV, "apmdev", "APM device emulation");
75 static d_open_t apmopen;
76 static d_close_t apmclose;
77 static d_write_t apmwrite;
78 static d_ioctl_t apmioctl;
79 static d_poll_t apmpoll;
80 static d_kqfilter_t apmkqfilter;
81 static void apmreadfiltdetach(struct knote *kn);
82 static int apmreadfilt(struct knote *kn, long hint);
83 static struct filterops apm_readfiltops =
84 { 1, NULL, apmreadfiltdetach, apmreadfilt };
86 static struct cdevsw apm_cdevsw = {
87 .d_version = D_VERSION,
88 .d_flags = D_TRACKCLOSE | D_NEEDMINOR,
95 .d_kqfilter = apmkqfilter
99 acpi_capm_convert_battstate(struct acpi_battinfo *battp)
105 if (battp->state & ACPI_BATT_STAT_DISCHARG) {
106 if (battp->cap >= 50)
107 state = 0; /* high */
111 if (battp->state & ACPI_BATT_STAT_CRITICAL)
112 state = 2; /* critical */
113 if (battp->state & ACPI_BATT_STAT_CHARGING)
114 state = 3; /* charging */
116 /* If still unknown, determine it based on the battery capacity. */
117 if (state == APM_UNKNOWN) {
118 if (battp->cap >= 50)
119 state = 0; /* high */
128 acpi_capm_convert_battflags(struct acpi_battinfo *battp)
134 if (battp->cap >= 50)
135 flags |= APM_BATT_HIGH;
137 if (battp->state & ACPI_BATT_STAT_CRITICAL)
138 flags |= APM_BATT_CRITICAL;
140 flags |= APM_BATT_LOW;
142 if (battp->state & ACPI_BATT_STAT_CHARGING)
143 flags |= APM_BATT_CHARGING;
144 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT)
145 flags = APM_BATT_NOT_PRESENT;
151 acpi_capm_get_info(apm_info_t aip)
154 struct acpi_battinfo batt;
156 aip->ai_infoversion = 1;
159 aip->ai_status = apm_active;
160 aip->ai_capabilities= 0xff00; /* unknown */
162 if (acpi_acad_get_acline(&acline))
163 aip->ai_acline = APM_UNKNOWN; /* unknown */
165 aip->ai_acline = acline; /* on/off */
168 if (acpi_battery_get_battinfo(NULL, &batt) != 0) {
169 aip->ai_batt_stat = APM_UNKNOWN;
170 aip->ai_batt_life = APM_UNKNOWN;
171 aip->ai_batt_time = -1; /* unknown */
172 aip->ai_batteries = ~0U; /* unknown */
174 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
175 aip->ai_batt_life = batt.cap;
176 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
177 aip->ai_batteries = acpi_battery_get_units();
185 acpi_capm_get_pwstatus(apm_pwstatus_t app)
188 int acline, unit, error;
189 struct acpi_battinfo batt;
191 if (app->ap_device != PMDV_ALLDEV &&
192 (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL))
196 if (app->ap_device == PMDV_ALLDEV)
197 error = acpi_battery_get_battinfo(NULL, &batt);
199 unit = app->ap_device - PMDV_BATT0;
200 dev = devclass_get_device(devclass_find("battery"), unit);
202 error = acpi_battery_get_battinfo(dev, &batt);
210 app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
211 app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
212 app->ap_batt_life = batt.cap;
213 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
215 if (acpi_acad_get_acline(&acline))
216 app->ap_acline = APM_UNKNOWN;
218 app->ap_acline = acline; /* on/off */
223 /* Create single-use devices for /dev/apm and /dev/apmctl. */
225 apm_clone(void *arg, struct ucred *cred, char *name, int namelen,
232 if (strcmp(name, "apmctl") == 0)
234 else if (strcmp(name, "apm") == 0)
239 /* Always create a new device and unit number. */
241 if (clone_create(&apm_clones, &apm_cdevsw, &unit, dev, 0)) {
243 *dev = make_dev(&apm_cdevsw, unit,
244 UID_ROOT, GID_OPERATOR, 0660, "apmctl%d", unit);
246 *dev = make_dev(&apm_cdevsw, unit,
247 UID_ROOT, GID_OPERATOR, 0664, "apm%d", unit);
251 (*dev)->si_flags |= SI_CHEAPCLONE;
256 /* Create a struct for tracking per-device suspend notification. */
257 static struct apm_clone_data *
258 apm_create_clone(struct cdev *dev, struct acpi_softc *acpi_sc)
260 struct apm_clone_data *clone;
262 clone = malloc(sizeof(*clone), M_APMDEV, M_WAITOK);
264 clone->acpi_sc = acpi_sc;
265 clone->notify_status = APM_EV_NONE;
266 bzero(&clone->sel_read, sizeof(clone->sel_read));
267 knlist_init_mtx(&clone->sel_read.si_note, &acpi_mutex);
270 * The acpi device is always managed by devd(8) and is considered
271 * writable (i.e., ack is required to allow suspend to proceed.)
273 if (strcmp("acpi", devtoname(dev)) == 0)
274 clone->flags = ACPI_EVF_DEVD | ACPI_EVF_WRITE;
276 clone->flags = ACPI_EVF_NONE;
279 STAILQ_INSERT_TAIL(&acpi_sc->apm_cdevs, clone, entries);
285 apmopen(struct cdev *dev, int flag, int fmt, struct thread *td)
287 struct acpi_softc *acpi_sc;
288 struct apm_clone_data *clone;
291 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0);
293 clone = apm_create_clone(dev, acpi_sc);
294 dev->si_drv1 = clone;
296 /* If the device is opened for write, record that. */
297 if ((flag & FWRITE) != 0)
298 clone->flags |= ACPI_EVF_WRITE;
304 apmclose(struct cdev *dev, int flag, int fmt, struct thread *td)
306 struct apm_clone_data *clone;
307 struct acpi_softc *acpi_sc;
309 clone = dev->si_drv1;
310 acpi_sc = clone->acpi_sc;
312 /* We are about to lose a reference so check if suspend should occur */
313 if (acpi_sc->acpi_next_sstate != 0 &&
314 clone->notify_status != APM_EV_ACKED)
315 acpi_AckSleepState(clone, 0);
317 /* Remove this clone's data from the list and free it. */
319 STAILQ_REMOVE(&acpi_sc->apm_cdevs, clone, apm_clone_data, entries);
320 knlist_destroy(&clone->sel_read.si_note);
322 free(clone, M_APMDEV);
323 destroy_dev_sched(dev);
328 apmioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
331 struct apm_clone_data *clone;
332 struct acpi_softc *acpi_sc;
333 struct apm_info info;
334 struct apm_event_info *ev_info;
338 clone = dev->si_drv1;
339 acpi_sc = clone->acpi_sc;
343 if ((flag & FWRITE) == 0)
345 if (acpi_sc->acpi_next_sstate == 0) {
346 if (acpi_sc->acpi_suspend_sx != ACPI_STATE_S5) {
347 error = acpi_ReqSleepState(acpi_sc,
348 acpi_sc->acpi_suspend_sx);
351 "power off via apm suspend not supported\n");
355 error = acpi_AckSleepState(clone, 0);
358 if ((flag & FWRITE) == 0)
360 if (acpi_sc->acpi_next_sstate == 0) {
361 if (acpi_sc->acpi_standby_sx != ACPI_STATE_S5) {
362 error = acpi_ReqSleepState(acpi_sc,
363 acpi_sc->acpi_standby_sx);
366 "power off via apm standby not supported\n");
370 error = acpi_AckSleepState(clone, 0);
372 case APMIO_NEXTEVENT:
373 printf("apm nextevent start\n");
375 if (acpi_sc->acpi_next_sstate != 0 && clone->notify_status ==
377 ev_info = (struct apm_event_info *)addr;
378 if (acpi_sc->acpi_next_sstate <= ACPI_STATE_S3)
379 ev_info->type = PMEV_STANDBYREQ;
381 ev_info->type = PMEV_SUSPENDREQ;
383 clone->notify_status = APM_EV_NOTIFIED;
384 printf("apm event returning %d\n", ev_info->type);
389 case APMIO_GETINFO_OLD:
390 if (acpi_capm_get_info(&info))
392 aiop = (apm_info_old_t)addr;
393 aiop->ai_major = info.ai_major;
394 aiop->ai_minor = info.ai_minor;
395 aiop->ai_acline = info.ai_acline;
396 aiop->ai_batt_stat = info.ai_batt_stat;
397 aiop->ai_batt_life = info.ai_batt_life;
398 aiop->ai_status = info.ai_status;
401 if (acpi_capm_get_info((apm_info_t)addr))
404 case APMIO_GETPWSTATUS:
405 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
409 if ((flag & FWRITE) == 0)
414 if ((flag & FWRITE) == 0)
420 case APMIO_NOTHALTCPU:
423 if ((flag & FWRITE) == 0)
427 if ((flag & FWRITE) == 0)
429 bzero(addr, sizeof(struct apm_bios_arg));
440 apmwrite(struct cdev *dev, struct uio *uio, int ioflag)
442 return (uio->uio_resid);
446 apmpoll(struct cdev *dev, int events, struct thread *td)
448 struct apm_clone_data *clone;
453 clone = dev->si_drv1;
454 if (clone->acpi_sc->acpi_next_sstate)
455 revents |= events & (POLLIN | POLLRDNORM);
457 selrecord(td, &clone->sel_read);
463 apmkqfilter(struct cdev *dev, struct knote *kn)
465 struct apm_clone_data *clone;
468 clone = dev->si_drv1;
470 kn->kn_fop = &apm_readfiltops;
471 knlist_add(&clone->sel_read.si_note, kn, 0);
477 apmreadfiltdetach(struct knote *kn)
479 struct apm_clone_data *clone;
483 knlist_remove(&clone->sel_read.si_note, kn, 0);
488 apmreadfilt(struct knote *kn, long hint)
490 struct apm_clone_data *clone;
495 sleeping = clone->acpi_sc->acpi_next_sstate ? 1 : 0;
501 acpi_machdep_init(device_t dev)
503 struct acpi_softc *acpi_sc;
505 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0);
507 /* Create a clone for /dev/acpi also. */
508 STAILQ_INIT(&acpi_sc->apm_cdevs);
509 acpi_sc->acpi_clone = apm_create_clone(acpi_sc->acpi_dev_t, acpi_sc);
510 clone_setup(&apm_clones);
511 EVENTHANDLER_REGISTER(dev_clone, apm_clone, 0, 1000);
512 acpi_install_wakeup_handler(acpi_sc);
514 if (intr_model == ACPI_INTR_PIC)
515 BUS_CONFIG_INTR(dev, AcpiGbl_FADT.SciInterrupt,
516 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
518 acpi_SetIntrModel(intr_model);
520 SYSCTL_ADD_UINT(&acpi_sc->acpi_sysctl_ctx,
521 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO,
522 "reset_video", CTLFLAG_RW, &acpi_reset_video, 0,
523 "Call the VESA reset BIOS vector on the resume path");
529 acpi_SetDefaultIntrModel(int model)
535 /* Check BIOS date. If 1998 or older, disable ACPI. */
537 acpi_machdep_quirks(int *quirks)
542 /* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */
543 va = pmap_mapbios(0xffff0, 16);
544 sscanf(va + 11, "%2d", &year);
545 pmap_unmapbios((vm_offset_t)va, 16);
548 * Date must be >= 1/1/1999 or we don't trust ACPI. Note that this
549 * check must be changed by my 114th birthday.
551 if (year > 90 && year < 99)
552 *quirks = ACPI_Q_BROKEN;
560 __asm __volatile("sti; hlt");
564 * ACPI nexus(4) driver.
567 nexus_acpi_probe(device_t dev)
571 error = acpi_identify();
575 return (BUS_PROBE_DEFAULT);
579 nexus_acpi_attach(device_t dev)
582 nexus_init_resources();
583 bus_generic_probe(dev);
584 if (BUS_ADD_CHILD(dev, 10, "acpi", 0) == NULL)
585 panic("failed to add acpi0 device");
587 return (bus_generic_attach(dev));
590 static device_method_t nexus_acpi_methods[] = {
591 /* Device interface */
592 DEVMETHOD(device_probe, nexus_acpi_probe),
593 DEVMETHOD(device_attach, nexus_acpi_attach),
598 DEFINE_CLASS_1(nexus, nexus_acpi_driver, nexus_acpi_methods, 1, nexus_driver);
599 static devclass_t nexus_devclass;
601 DRIVER_MODULE(nexus_acpi, root, nexus_acpi_driver, nexus_devclass, 0, 0);