1/*-
2 * Copyright (c) 2001 Mitsuru IWASAKI
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.
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.
13 *
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
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2001 Mitsuru IWASAKI
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.
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.
13 *
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
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
|
36#include <sys/malloc.h>
37#include <sys/poll.h>
38#include <sys/uio.h>
39
40#include <contrib/dev/acpica/include/acpi.h>
41
42#include <dev/acpica/acpivar.h>
43#include <dev/acpica/acpiio.h>
44
45#include <machine/apm_bios.h>
46
47/*
48 * APM driver emulation
49 */
50
51#define APM_UNKNOWN 0xff
52
53static int apm_active;
54static struct clonedevs *apm_clones;
55
56MALLOC_DEFINE(M_APMDEV, "apmdev", "APM device emulation");
57
58static d_open_t apmopen;
59static d_close_t apmclose;
60static d_write_t apmwrite;
61static d_ioctl_t apmioctl;
62static d_poll_t apmpoll;
63static d_kqfilter_t apmkqfilter;
64static void apmreadfiltdetach(struct knote *kn);
65static int apmreadfilt(struct knote *kn, long hint);
66static struct filterops apm_readfiltops = {
67 .f_isfd = 1,
68 .f_detach = apmreadfiltdetach,
69 .f_event = apmreadfilt,
70};
71
72static struct cdevsw apm_cdevsw = {
73 .d_version = D_VERSION,
74 .d_flags = D_TRACKCLOSE | D_NEEDMINOR,
75 .d_open = apmopen,
76 .d_close = apmclose,
77 .d_write = apmwrite,
78 .d_ioctl = apmioctl,
79 .d_poll = apmpoll,
80 .d_name = "apm",
81 .d_kqfilter = apmkqfilter
82};
83
84static int
85acpi_capm_convert_battstate(struct acpi_battinfo *battp)
86{
87 int state;
88
89 state = APM_UNKNOWN;
90
91 if (battp->state & ACPI_BATT_STAT_DISCHARG) {
92 if (battp->cap >= 50)
93 state = 0; /* high */
94 else
95 state = 1; /* low */
96 }
97 if (battp->state & ACPI_BATT_STAT_CRITICAL)
98 state = 2; /* critical */
99 if (battp->state & ACPI_BATT_STAT_CHARGING)
100 state = 3; /* charging */
101
102 /* If still unknown, determine it based on the battery capacity. */
103 if (state == APM_UNKNOWN) {
104 if (battp->cap >= 50)
105 state = 0; /* high */
106 else
107 state = 1; /* low */
108 }
109
110 return (state);
111}
112
113static int
114acpi_capm_convert_battflags(struct acpi_battinfo *battp)
115{
116 int flags;
117
118 flags = 0;
119
120 if (battp->cap >= 50)
121 flags |= APM_BATT_HIGH;
122 else {
123 if (battp->state & ACPI_BATT_STAT_CRITICAL)
124 flags |= APM_BATT_CRITICAL;
125 else
126 flags |= APM_BATT_LOW;
127 }
128 if (battp->state & ACPI_BATT_STAT_CHARGING)
129 flags |= APM_BATT_CHARGING;
130 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT)
131 flags = APM_BATT_NOT_PRESENT;
132
133 return (flags);
134}
135
136static int
137acpi_capm_get_info(apm_info_t aip)
138{
139 int acline;
140 struct acpi_battinfo batt;
141
142 aip->ai_infoversion = 1;
143 aip->ai_major = 1;
144 aip->ai_minor = 2;
145 aip->ai_status = apm_active;
146 aip->ai_capabilities= 0xff00; /* unknown */
147
148 if (acpi_acad_get_acline(&acline))
149 aip->ai_acline = APM_UNKNOWN; /* unknown */
150 else
151 aip->ai_acline = acline; /* on/off */
152
153 if (acpi_battery_get_battinfo(NULL, &batt) != 0) {
154 aip->ai_batt_stat = APM_UNKNOWN;
155 aip->ai_batt_life = APM_UNKNOWN;
156 aip->ai_batt_time = -1; /* unknown */
157 aip->ai_batteries = ~0U; /* unknown */
158 } else {
159 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
160 aip->ai_batt_life = batt.cap;
161 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
162 aip->ai_batteries = acpi_battery_get_units();
163 }
164
165 return (0);
166}
167
168static int
169acpi_capm_get_pwstatus(apm_pwstatus_t app)
170{
171 device_t dev;
172 int acline, unit, error;
173 struct acpi_battinfo batt;
174
175 if (app->ap_device != PMDV_ALLDEV &&
176 (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL))
177 return (1);
178
179 if (app->ap_device == PMDV_ALLDEV)
180 error = acpi_battery_get_battinfo(NULL, &batt);
181 else {
182 unit = app->ap_device - PMDV_BATT0;
183 dev = devclass_get_device(devclass_find("battery"), unit);
184 if (dev != NULL)
185 error = acpi_battery_get_battinfo(dev, &batt);
186 else
187 error = ENXIO;
188 }
189 if (error)
190 return (1);
191
192 app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
193 app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
194 app->ap_batt_life = batt.cap;
195 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
196
197 if (acpi_acad_get_acline(&acline))
198 app->ap_acline = APM_UNKNOWN;
199 else
200 app->ap_acline = acline; /* on/off */
201
202 return (0);
203}
204
205/* Create single-use devices for /dev/apm and /dev/apmctl. */
206static void
207apm_clone(void *arg, struct ucred *cred, char *name, int namelen,
208 struct cdev **dev)
209{
210 int ctl_dev, unit;
211
212 if (*dev != NULL)
213 return;
214 if (strcmp(name, "apmctl") == 0)
215 ctl_dev = TRUE;
216 else if (strcmp(name, "apm") == 0)
217 ctl_dev = FALSE;
218 else
219 return;
220
221 /* Always create a new device and unit number. */
222 unit = -1;
223 if (clone_create(&apm_clones, &apm_cdevsw, &unit, dev, 0)) {
224 if (ctl_dev) {
225 *dev = make_dev(&apm_cdevsw, unit,
226 UID_ROOT, GID_OPERATOR, 0660, "apmctl%d", unit);
227 } else {
228 *dev = make_dev(&apm_cdevsw, unit,
229 UID_ROOT, GID_OPERATOR, 0664, "apm%d", unit);
230 }
231 if (*dev != NULL) {
232 dev_ref(*dev);
233 (*dev)->si_flags |= SI_CHEAPCLONE;
234 }
235 }
236}
237
238/* Create a struct for tracking per-device suspend notification. */
239static struct apm_clone_data *
240apm_create_clone(struct cdev *dev, struct acpi_softc *acpi_sc)
241{
242 struct apm_clone_data *clone;
243
244 clone = malloc(sizeof(*clone), M_APMDEV, M_WAITOK);
245 clone->cdev = dev;
246 clone->acpi_sc = acpi_sc;
247 clone->notify_status = APM_EV_NONE;
248 bzero(&clone->sel_read, sizeof(clone->sel_read));
249 knlist_init_mtx(&clone->sel_read.si_note, &acpi_mutex);
250
251 /*
252 * The acpi device is always managed by devd(8) and is considered
253 * writable (i.e., ack is required to allow suspend to proceed.)
254 */
255 if (strcmp("acpi", devtoname(dev)) == 0)
256 clone->flags = ACPI_EVF_DEVD | ACPI_EVF_WRITE;
257 else
258 clone->flags = ACPI_EVF_NONE;
259
260 ACPI_LOCK(acpi);
261 STAILQ_INSERT_TAIL(&acpi_sc->apm_cdevs, clone, entries);
262 ACPI_UNLOCK(acpi);
263 return (clone);
264}
265
266static int
267apmopen(struct cdev *dev, int flag, int fmt, struct thread *td)
268{
269 struct acpi_softc *acpi_sc;
270 struct apm_clone_data *clone;
271
272 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0);
273 clone = apm_create_clone(dev, acpi_sc);
274 dev->si_drv1 = clone;
275
276 /* If the device is opened for write, record that. */
277 if ((flag & FWRITE) != 0)
278 clone->flags |= ACPI_EVF_WRITE;
279
280 return (0);
281}
282
283static int
284apmclose(struct cdev *dev, int flag, int fmt, struct thread *td)
285{
286 struct apm_clone_data *clone;
287 struct acpi_softc *acpi_sc;
288
289 clone = dev->si_drv1;
290 acpi_sc = clone->acpi_sc;
291
292 /* We are about to lose a reference so check if suspend should occur */
293 if (acpi_sc->acpi_next_sstate != 0 &&
294 clone->notify_status != APM_EV_ACKED)
295 acpi_AckSleepState(clone, 0);
296
297 /* Remove this clone's data from the list and free it. */
298 ACPI_LOCK(acpi);
299 STAILQ_REMOVE(&acpi_sc->apm_cdevs, clone, apm_clone_data, entries);
300 knlist_destroy(&clone->sel_read.si_note);
301 ACPI_UNLOCK(acpi);
302 free(clone, M_APMDEV);
303 destroy_dev_sched(dev);
304 return (0);
305}
306
307static int
308apmioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
309{
310 int error;
311 struct apm_clone_data *clone;
312 struct acpi_softc *acpi_sc;
313 struct apm_info info;
314 struct apm_event_info *ev_info;
315 apm_info_old_t aiop;
316
317 error = 0;
318 clone = dev->si_drv1;
319 acpi_sc = clone->acpi_sc;
320
321 switch (cmd) {
322 case APMIO_SUSPEND:
323 if ((flag & FWRITE) == 0)
324 return (EPERM);
325 if (acpi_sc->acpi_next_sstate == 0) {
326 if (acpi_sc->acpi_suspend_sx != ACPI_STATE_S5) {
327 error = acpi_ReqSleepState(acpi_sc,
328 acpi_sc->acpi_suspend_sx);
329 } else {
330 printf(
331 "power off via apm suspend not supported\n");
332 error = ENXIO;
333 }
334 } else
335 error = acpi_AckSleepState(clone, 0);
336 break;
337 case APMIO_STANDBY:
338 if ((flag & FWRITE) == 0)
339 return (EPERM);
340 if (acpi_sc->acpi_next_sstate == 0) {
341 if (acpi_sc->acpi_standby_sx != ACPI_STATE_S5) {
342 error = acpi_ReqSleepState(acpi_sc,
343 acpi_sc->acpi_standby_sx);
344 } else {
345 printf(
346 "power off via apm standby not supported\n");
347 error = ENXIO;
348 }
349 } else
350 error = acpi_AckSleepState(clone, 0);
351 break;
352 case APMIO_NEXTEVENT:
353 printf("apm nextevent start\n");
354 ACPI_LOCK(acpi);
355 if (acpi_sc->acpi_next_sstate != 0 && clone->notify_status ==
356 APM_EV_NONE) {
357 ev_info = (struct apm_event_info *)addr;
358 if (acpi_sc->acpi_next_sstate <= ACPI_STATE_S3)
359 ev_info->type = PMEV_STANDBYREQ;
360 else
361 ev_info->type = PMEV_SUSPENDREQ;
362 ev_info->index = 0;
363 clone->notify_status = APM_EV_NOTIFIED;
364 printf("apm event returning %d\n", ev_info->type);
365 } else
366 error = EAGAIN;
367 ACPI_UNLOCK(acpi);
368 break;
369 case APMIO_GETINFO_OLD:
370 if (acpi_capm_get_info(&info))
371 error = ENXIO;
372 aiop = (apm_info_old_t)addr;
373 aiop->ai_major = info.ai_major;
374 aiop->ai_minor = info.ai_minor;
375 aiop->ai_acline = info.ai_acline;
376 aiop->ai_batt_stat = info.ai_batt_stat;
377 aiop->ai_batt_life = info.ai_batt_life;
378 aiop->ai_status = info.ai_status;
379 break;
380 case APMIO_GETINFO:
381 if (acpi_capm_get_info((apm_info_t)addr))
382 error = ENXIO;
383 break;
384 case APMIO_GETPWSTATUS:
385 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
386 error = ENXIO;
387 break;
388 case APMIO_ENABLE:
389 if ((flag & FWRITE) == 0)
390 return (EPERM);
391 apm_active = 1;
392 break;
393 case APMIO_DISABLE:
394 if ((flag & FWRITE) == 0)
395 return (EPERM);
396 apm_active = 0;
397 break;
398 case APMIO_HALTCPU:
399 break;
400 case APMIO_NOTHALTCPU:
401 break;
402 case APMIO_DISPLAY:
403 if ((flag & FWRITE) == 0)
404 return (EPERM);
405 break;
406 case APMIO_BIOS:
407 if ((flag & FWRITE) == 0)
408 return (EPERM);
409 bzero(addr, sizeof(struct apm_bios_arg));
410 break;
411 default:
412 error = EINVAL;
413 break;
414 }
415
416 return (error);
417}
418
419static int
420apmwrite(struct cdev *dev, struct uio *uio, int ioflag)
421{
422 return (uio->uio_resid);
423}
424
425static int
426apmpoll(struct cdev *dev, int events, struct thread *td)
427{
428 struct apm_clone_data *clone;
429 int revents;
430
431 revents = 0;
432 ACPI_LOCK(acpi);
433 clone = dev->si_drv1;
434 if (clone->acpi_sc->acpi_next_sstate)
435 revents |= events & (POLLIN | POLLRDNORM);
436 else
437 selrecord(td, &clone->sel_read);
438 ACPI_UNLOCK(acpi);
439 return (revents);
440}
441
442static int
443apmkqfilter(struct cdev *dev, struct knote *kn)
444{
445 struct apm_clone_data *clone;
446
447 ACPI_LOCK(acpi);
448 clone = dev->si_drv1;
449 kn->kn_hook = clone;
450 kn->kn_fop = &apm_readfiltops;
451 knlist_add(&clone->sel_read.si_note, kn, 0);
452 ACPI_UNLOCK(acpi);
453 return (0);
454}
455
456static void
457apmreadfiltdetach(struct knote *kn)
458{
459 struct apm_clone_data *clone;
460
461 ACPI_LOCK(acpi);
462 clone = kn->kn_hook;
463 knlist_remove(&clone->sel_read.si_note, kn, 0);
464 ACPI_UNLOCK(acpi);
465}
466
467static int
468apmreadfilt(struct knote *kn, long hint)
469{
470 struct apm_clone_data *clone;
471 int sleeping;
472
473 ACPI_LOCK(acpi);
474 clone = kn->kn_hook;
475 sleeping = clone->acpi_sc->acpi_next_sstate ? 1 : 0;
476 ACPI_UNLOCK(acpi);
477 return (sleeping);
478}
479
| 36#include <sys/malloc.h>
37#include <sys/poll.h>
38#include <sys/uio.h>
39
40#include <contrib/dev/acpica/include/acpi.h>
41
42#include <dev/acpica/acpivar.h>
43#include <dev/acpica/acpiio.h>
44
45#include <machine/apm_bios.h>
46
47/*
48 * APM driver emulation
49 */
50
51#define APM_UNKNOWN 0xff
52
53static int apm_active;
54static struct clonedevs *apm_clones;
55
56MALLOC_DEFINE(M_APMDEV, "apmdev", "APM device emulation");
57
58static d_open_t apmopen;
59static d_close_t apmclose;
60static d_write_t apmwrite;
61static d_ioctl_t apmioctl;
62static d_poll_t apmpoll;
63static d_kqfilter_t apmkqfilter;
64static void apmreadfiltdetach(struct knote *kn);
65static int apmreadfilt(struct knote *kn, long hint);
66static struct filterops apm_readfiltops = {
67 .f_isfd = 1,
68 .f_detach = apmreadfiltdetach,
69 .f_event = apmreadfilt,
70};
71
72static struct cdevsw apm_cdevsw = {
73 .d_version = D_VERSION,
74 .d_flags = D_TRACKCLOSE | D_NEEDMINOR,
75 .d_open = apmopen,
76 .d_close = apmclose,
77 .d_write = apmwrite,
78 .d_ioctl = apmioctl,
79 .d_poll = apmpoll,
80 .d_name = "apm",
81 .d_kqfilter = apmkqfilter
82};
83
84static int
85acpi_capm_convert_battstate(struct acpi_battinfo *battp)
86{
87 int state;
88
89 state = APM_UNKNOWN;
90
91 if (battp->state & ACPI_BATT_STAT_DISCHARG) {
92 if (battp->cap >= 50)
93 state = 0; /* high */
94 else
95 state = 1; /* low */
96 }
97 if (battp->state & ACPI_BATT_STAT_CRITICAL)
98 state = 2; /* critical */
99 if (battp->state & ACPI_BATT_STAT_CHARGING)
100 state = 3; /* charging */
101
102 /* If still unknown, determine it based on the battery capacity. */
103 if (state == APM_UNKNOWN) {
104 if (battp->cap >= 50)
105 state = 0; /* high */
106 else
107 state = 1; /* low */
108 }
109
110 return (state);
111}
112
113static int
114acpi_capm_convert_battflags(struct acpi_battinfo *battp)
115{
116 int flags;
117
118 flags = 0;
119
120 if (battp->cap >= 50)
121 flags |= APM_BATT_HIGH;
122 else {
123 if (battp->state & ACPI_BATT_STAT_CRITICAL)
124 flags |= APM_BATT_CRITICAL;
125 else
126 flags |= APM_BATT_LOW;
127 }
128 if (battp->state & ACPI_BATT_STAT_CHARGING)
129 flags |= APM_BATT_CHARGING;
130 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT)
131 flags = APM_BATT_NOT_PRESENT;
132
133 return (flags);
134}
135
136static int
137acpi_capm_get_info(apm_info_t aip)
138{
139 int acline;
140 struct acpi_battinfo batt;
141
142 aip->ai_infoversion = 1;
143 aip->ai_major = 1;
144 aip->ai_minor = 2;
145 aip->ai_status = apm_active;
146 aip->ai_capabilities= 0xff00; /* unknown */
147
148 if (acpi_acad_get_acline(&acline))
149 aip->ai_acline = APM_UNKNOWN; /* unknown */
150 else
151 aip->ai_acline = acline; /* on/off */
152
153 if (acpi_battery_get_battinfo(NULL, &batt) != 0) {
154 aip->ai_batt_stat = APM_UNKNOWN;
155 aip->ai_batt_life = APM_UNKNOWN;
156 aip->ai_batt_time = -1; /* unknown */
157 aip->ai_batteries = ~0U; /* unknown */
158 } else {
159 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
160 aip->ai_batt_life = batt.cap;
161 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
162 aip->ai_batteries = acpi_battery_get_units();
163 }
164
165 return (0);
166}
167
168static int
169acpi_capm_get_pwstatus(apm_pwstatus_t app)
170{
171 device_t dev;
172 int acline, unit, error;
173 struct acpi_battinfo batt;
174
175 if (app->ap_device != PMDV_ALLDEV &&
176 (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL))
177 return (1);
178
179 if (app->ap_device == PMDV_ALLDEV)
180 error = acpi_battery_get_battinfo(NULL, &batt);
181 else {
182 unit = app->ap_device - PMDV_BATT0;
183 dev = devclass_get_device(devclass_find("battery"), unit);
184 if (dev != NULL)
185 error = acpi_battery_get_battinfo(dev, &batt);
186 else
187 error = ENXIO;
188 }
189 if (error)
190 return (1);
191
192 app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
193 app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
194 app->ap_batt_life = batt.cap;
195 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
196
197 if (acpi_acad_get_acline(&acline))
198 app->ap_acline = APM_UNKNOWN;
199 else
200 app->ap_acline = acline; /* on/off */
201
202 return (0);
203}
204
205/* Create single-use devices for /dev/apm and /dev/apmctl. */
206static void
207apm_clone(void *arg, struct ucred *cred, char *name, int namelen,
208 struct cdev **dev)
209{
210 int ctl_dev, unit;
211
212 if (*dev != NULL)
213 return;
214 if (strcmp(name, "apmctl") == 0)
215 ctl_dev = TRUE;
216 else if (strcmp(name, "apm") == 0)
217 ctl_dev = FALSE;
218 else
219 return;
220
221 /* Always create a new device and unit number. */
222 unit = -1;
223 if (clone_create(&apm_clones, &apm_cdevsw, &unit, dev, 0)) {
224 if (ctl_dev) {
225 *dev = make_dev(&apm_cdevsw, unit,
226 UID_ROOT, GID_OPERATOR, 0660, "apmctl%d", unit);
227 } else {
228 *dev = make_dev(&apm_cdevsw, unit,
229 UID_ROOT, GID_OPERATOR, 0664, "apm%d", unit);
230 }
231 if (*dev != NULL) {
232 dev_ref(*dev);
233 (*dev)->si_flags |= SI_CHEAPCLONE;
234 }
235 }
236}
237
238/* Create a struct for tracking per-device suspend notification. */
239static struct apm_clone_data *
240apm_create_clone(struct cdev *dev, struct acpi_softc *acpi_sc)
241{
242 struct apm_clone_data *clone;
243
244 clone = malloc(sizeof(*clone), M_APMDEV, M_WAITOK);
245 clone->cdev = dev;
246 clone->acpi_sc = acpi_sc;
247 clone->notify_status = APM_EV_NONE;
248 bzero(&clone->sel_read, sizeof(clone->sel_read));
249 knlist_init_mtx(&clone->sel_read.si_note, &acpi_mutex);
250
251 /*
252 * The acpi device is always managed by devd(8) and is considered
253 * writable (i.e., ack is required to allow suspend to proceed.)
254 */
255 if (strcmp("acpi", devtoname(dev)) == 0)
256 clone->flags = ACPI_EVF_DEVD | ACPI_EVF_WRITE;
257 else
258 clone->flags = ACPI_EVF_NONE;
259
260 ACPI_LOCK(acpi);
261 STAILQ_INSERT_TAIL(&acpi_sc->apm_cdevs, clone, entries);
262 ACPI_UNLOCK(acpi);
263 return (clone);
264}
265
266static int
267apmopen(struct cdev *dev, int flag, int fmt, struct thread *td)
268{
269 struct acpi_softc *acpi_sc;
270 struct apm_clone_data *clone;
271
272 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0);
273 clone = apm_create_clone(dev, acpi_sc);
274 dev->si_drv1 = clone;
275
276 /* If the device is opened for write, record that. */
277 if ((flag & FWRITE) != 0)
278 clone->flags |= ACPI_EVF_WRITE;
279
280 return (0);
281}
282
283static int
284apmclose(struct cdev *dev, int flag, int fmt, struct thread *td)
285{
286 struct apm_clone_data *clone;
287 struct acpi_softc *acpi_sc;
288
289 clone = dev->si_drv1;
290 acpi_sc = clone->acpi_sc;
291
292 /* We are about to lose a reference so check if suspend should occur */
293 if (acpi_sc->acpi_next_sstate != 0 &&
294 clone->notify_status != APM_EV_ACKED)
295 acpi_AckSleepState(clone, 0);
296
297 /* Remove this clone's data from the list and free it. */
298 ACPI_LOCK(acpi);
299 STAILQ_REMOVE(&acpi_sc->apm_cdevs, clone, apm_clone_data, entries);
300 knlist_destroy(&clone->sel_read.si_note);
301 ACPI_UNLOCK(acpi);
302 free(clone, M_APMDEV);
303 destroy_dev_sched(dev);
304 return (0);
305}
306
307static int
308apmioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
309{
310 int error;
311 struct apm_clone_data *clone;
312 struct acpi_softc *acpi_sc;
313 struct apm_info info;
314 struct apm_event_info *ev_info;
315 apm_info_old_t aiop;
316
317 error = 0;
318 clone = dev->si_drv1;
319 acpi_sc = clone->acpi_sc;
320
321 switch (cmd) {
322 case APMIO_SUSPEND:
323 if ((flag & FWRITE) == 0)
324 return (EPERM);
325 if (acpi_sc->acpi_next_sstate == 0) {
326 if (acpi_sc->acpi_suspend_sx != ACPI_STATE_S5) {
327 error = acpi_ReqSleepState(acpi_sc,
328 acpi_sc->acpi_suspend_sx);
329 } else {
330 printf(
331 "power off via apm suspend not supported\n");
332 error = ENXIO;
333 }
334 } else
335 error = acpi_AckSleepState(clone, 0);
336 break;
337 case APMIO_STANDBY:
338 if ((flag & FWRITE) == 0)
339 return (EPERM);
340 if (acpi_sc->acpi_next_sstate == 0) {
341 if (acpi_sc->acpi_standby_sx != ACPI_STATE_S5) {
342 error = acpi_ReqSleepState(acpi_sc,
343 acpi_sc->acpi_standby_sx);
344 } else {
345 printf(
346 "power off via apm standby not supported\n");
347 error = ENXIO;
348 }
349 } else
350 error = acpi_AckSleepState(clone, 0);
351 break;
352 case APMIO_NEXTEVENT:
353 printf("apm nextevent start\n");
354 ACPI_LOCK(acpi);
355 if (acpi_sc->acpi_next_sstate != 0 && clone->notify_status ==
356 APM_EV_NONE) {
357 ev_info = (struct apm_event_info *)addr;
358 if (acpi_sc->acpi_next_sstate <= ACPI_STATE_S3)
359 ev_info->type = PMEV_STANDBYREQ;
360 else
361 ev_info->type = PMEV_SUSPENDREQ;
362 ev_info->index = 0;
363 clone->notify_status = APM_EV_NOTIFIED;
364 printf("apm event returning %d\n", ev_info->type);
365 } else
366 error = EAGAIN;
367 ACPI_UNLOCK(acpi);
368 break;
369 case APMIO_GETINFO_OLD:
370 if (acpi_capm_get_info(&info))
371 error = ENXIO;
372 aiop = (apm_info_old_t)addr;
373 aiop->ai_major = info.ai_major;
374 aiop->ai_minor = info.ai_minor;
375 aiop->ai_acline = info.ai_acline;
376 aiop->ai_batt_stat = info.ai_batt_stat;
377 aiop->ai_batt_life = info.ai_batt_life;
378 aiop->ai_status = info.ai_status;
379 break;
380 case APMIO_GETINFO:
381 if (acpi_capm_get_info((apm_info_t)addr))
382 error = ENXIO;
383 break;
384 case APMIO_GETPWSTATUS:
385 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
386 error = ENXIO;
387 break;
388 case APMIO_ENABLE:
389 if ((flag & FWRITE) == 0)
390 return (EPERM);
391 apm_active = 1;
392 break;
393 case APMIO_DISABLE:
394 if ((flag & FWRITE) == 0)
395 return (EPERM);
396 apm_active = 0;
397 break;
398 case APMIO_HALTCPU:
399 break;
400 case APMIO_NOTHALTCPU:
401 break;
402 case APMIO_DISPLAY:
403 if ((flag & FWRITE) == 0)
404 return (EPERM);
405 break;
406 case APMIO_BIOS:
407 if ((flag & FWRITE) == 0)
408 return (EPERM);
409 bzero(addr, sizeof(struct apm_bios_arg));
410 break;
411 default:
412 error = EINVAL;
413 break;
414 }
415
416 return (error);
417}
418
419static int
420apmwrite(struct cdev *dev, struct uio *uio, int ioflag)
421{
422 return (uio->uio_resid);
423}
424
425static int
426apmpoll(struct cdev *dev, int events, struct thread *td)
427{
428 struct apm_clone_data *clone;
429 int revents;
430
431 revents = 0;
432 ACPI_LOCK(acpi);
433 clone = dev->si_drv1;
434 if (clone->acpi_sc->acpi_next_sstate)
435 revents |= events & (POLLIN | POLLRDNORM);
436 else
437 selrecord(td, &clone->sel_read);
438 ACPI_UNLOCK(acpi);
439 return (revents);
440}
441
442static int
443apmkqfilter(struct cdev *dev, struct knote *kn)
444{
445 struct apm_clone_data *clone;
446
447 ACPI_LOCK(acpi);
448 clone = dev->si_drv1;
449 kn->kn_hook = clone;
450 kn->kn_fop = &apm_readfiltops;
451 knlist_add(&clone->sel_read.si_note, kn, 0);
452 ACPI_UNLOCK(acpi);
453 return (0);
454}
455
456static void
457apmreadfiltdetach(struct knote *kn)
458{
459 struct apm_clone_data *clone;
460
461 ACPI_LOCK(acpi);
462 clone = kn->kn_hook;
463 knlist_remove(&clone->sel_read.si_note, kn, 0);
464 ACPI_UNLOCK(acpi);
465}
466
467static int
468apmreadfilt(struct knote *kn, long hint)
469{
470 struct apm_clone_data *clone;
471 int sleeping;
472
473 ACPI_LOCK(acpi);
474 clone = kn->kn_hook;
475 sleeping = clone->acpi_sc->acpi_next_sstate ? 1 : 0;
476 ACPI_UNLOCK(acpi);
477 return (sleeping);
478}
479
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