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Unleashed v1.4
[unleashed.git] / usr / src / uts / common / io / pm.c
blobd304a00712cc23753f090e224776834800365a67
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /*
27 * pm This driver now only handles the ioctl interface. The scanning
28 * and policy stuff now lives in kernel/os/sunpm.c.
29 * Not DDI compliant
30 */
31
32 #include <sys/types.h>
33 #include <sys/errno.h>
34 #include <sys/modctl.h>
35 #include <sys/callb.h> /* callback registration for cpu_deep_idle */
36 #include <sys/conf.h> /* driver flags and functions */
37 #include <sys/open.h> /* OTYP_CHR definition */
38 #include <sys/stat.h> /* S_IFCHR definition */
39 #include <sys/pathname.h> /* name -> dev_info xlation */
40 #include <sys/kmem.h> /* memory alloc stuff */
41 #include <sys/debug.h>
42 #include <sys/pm.h>
43 #include <sys/ddi.h>
44 #include <sys/sunddi.h>
45 #include <sys/epm.h>
46 #include <sys/vfs.h>
47 #include <sys/mode.h>
48 #include <sys/mkdev.h>
49 #include <sys/promif.h>
50 #include <sys/consdev.h>
51 #include <sys/ddi_impldefs.h>
52 #include <sys/poll.h>
53 #include <sys/note.h>
54 #include <sys/taskq.h>
55 #include <sys/policy.h>
56 #include <sys/cpu_pm.h>
57
58 /*
59 * Minor number is instance<<8 + clone minor from range 1-254; (0 reserved
60 * for "original")
61 */
62 #define PM_MINOR_TO_CLONE(minor) ((minor) & (PM_MAX_CLONE -1))
63
64 #define PM_NUMCMPTS(dip) (DEVI(dip)->devi_pm_num_components)
65 #define PM_IS_CFB(dip) (DEVI(dip)->devi_pm_flags & PMC_CONSOLE_FB)
66 #define PM_MAJOR(dip) ddi_driver_major(dip)
67 #define PM_RELE(dip) ddi_release_devi(dip)
68
69 #define PM_IDLEDOWN_TIME 10
70 #define MAXSMBIOSSTRLEN 64 /* from SMBIOS spec */
71 #define MAXCOPYBUF (MAXSMBIOSSTRLEN + 1)
72
73 extern kmutex_t pm_scan_lock; /* protects autopm_enable, pm_scans_disabled */
74 extern kmutex_t pm_clone_lock; /* protects pm_clones array */
75 extern int autopm_enabled;
76 extern pm_cpupm_t cpupm;
77 extern pm_cpupm_t cpupm_default_mode;
78 extern int pm_default_idle_threshold;
79 extern int pm_system_idle_threshold;
80 extern int pm_cpu_idle_threshold;
81 extern kcondvar_t pm_clones_cv[PM_MAX_CLONE];
82 extern uint_t pm_poll_cnt[PM_MAX_CLONE];
83 extern int autoS3_enabled;
84 extern void pm_record_thresh(pm_thresh_rec_t *);
85 extern void pm_register_watcher(int, dev_info_t *);
86 extern int pm_get_current_power(dev_info_t *, int, int *);
87 extern int pm_interest_registered(int);
88 extern void pm_all_to_default_thresholds(void);
89 extern int pm_current_threshold(dev_info_t *, int, int *);
90 extern void pm_deregister_watcher(int, dev_info_t *);
91 extern void pm_unrecord_threshold(char *);
92 extern int pm_S3_enabled;
93 extern int pm_ppm_searchlist(pm_searchargs_t *);
94 extern psce_t *pm_psc_clone_to_direct(int);
95 extern psce_t *pm_psc_clone_to_interest(int);
96
97 /*
98 * The soft state of the power manager. Since there will only
99 * one of these, just reference it through a static pointer.
100 */
101 static struct pmstate {
102 dev_info_t *pm_dip; /* ptr to our dev_info node */
103 int pm_instance; /* for ddi_get_instance() */
104 timeout_id_t pm_idledown_id; /* pm idledown timeout id */
105 uchar_t pm_clones[PM_MAX_CLONE]; /* uniqueify multiple opens */
106 struct cred *pm_cred[PM_MAX_CLONE]; /* cred for each unique open */
107 } pm_state = { NULL, -1, (timeout_id_t)0 };
108 typedef struct pmstate *pm_state_t;
109 static pm_state_t pmstp = &pm_state;
110
111 static int pm_open(dev_t *, int, int, cred_t *);
112 static int pm_close(dev_t, int, int, cred_t *);
113 static int pm_ioctl(dev_t, int, intptr_t, int, cred_t *, int *);
114 static int pm_chpoll(dev_t, short, int, short *, struct pollhead **);
115
116 static struct cb_ops pm_cb_ops = {
117 pm_open, /* open */
118 pm_close, /* close */
119 nodev, /* strategy */
120 nodev, /* print */
121 nodev, /* dump */
122 nodev, /* read */
123 nodev, /* write */
124 pm_ioctl, /* ioctl */
125 nodev, /* devmap */
126 nodev, /* mmap */
127 nodev, /* segmap */
128 pm_chpoll, /* poll */
129 ddi_prop_op, /* prop_op */
130 NULL, /* streamtab */
131 D_NEW | D_MP /* driver compatibility flag */
132 };
133
134 static int pm_getinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg,
135 void **result);
136 static int pm_attach(dev_info_t *dip, ddi_attach_cmd_t cmd);
137 static int pm_detach(dev_info_t *dip, ddi_detach_cmd_t cmd);
138
139 static struct dev_ops pm_ops = {
140 DEVO_REV, /* devo_rev */
141 0, /* refcnt */
142 pm_getinfo, /* info */
143 nulldev, /* identify */
144 nulldev, /* probe */
145 pm_attach, /* attach */
146 pm_detach, /* detach */
147 nodev, /* reset */
148 &pm_cb_ops, /* driver operations */
149 NULL, /* bus operations */
150 NULL, /* power */
151 ddi_quiesce_not_needed, /* quiesce */
152 };
153
154 static struct modldrv modldrv = {
155 &mod_driverops,
156 "power management driver",
157 &pm_ops
158 };
159
160 static struct modlinkage modlinkage = {
161 MODREV_1, &modldrv, 0
162 };
163
164 /* Local functions */
165 #ifdef DEBUG
166 static int print_info(dev_info_t *, void *);
167
168 #endif
169
170 int
171 _init(void)
172 {
173 return (mod_install(&modlinkage));
174 }
175
176 int
177 _fini(void)
178 {
179 return (mod_remove(&modlinkage));
180 }
181
182 int
183 _info(struct modinfo *modinfop)
184 {
185 return (mod_info(&modlinkage, modinfop));
186 }
187
188 static int
189 pm_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
190 {
191 int i;
192
193 switch (cmd) {
194
195 case DDI_ATTACH:
196 if (pmstp->pm_instance != -1) /* Only allow one instance */
197 return (DDI_FAILURE);
198 pmstp->pm_instance = ddi_get_instance(dip);
199 if (ddi_create_minor_node(dip, "pm", S_IFCHR,
200 (pmstp->pm_instance << 8) + 0,
201 DDI_PSEUDO, 0) != DDI_SUCCESS) {
202 return (DDI_FAILURE);
203 }
204 pmstp->pm_dip = dip; /* pm_init and getinfo depend on it */
205
206 for (i = 0; i < PM_MAX_CLONE; i++)
207 cv_init(&pm_clones_cv[i], NULL, CV_DEFAULT, NULL);
208
209 ddi_report_dev(dip);
210 return (DDI_SUCCESS);
211
212 default:
213 return (DDI_FAILURE);
214 }
215 }
216
217 /* ARGSUSED */
218 static int
219 pm_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
220 {
221 int i;
222
223 switch (cmd) {
224 case DDI_DETACH:
225 /*
226 * Don't detach while idledown timeout is pending. Note that
227 * we already know we're not in pm_ioctl() due to framework
228 * synchronization, so this is a sufficient test
229 */
230 if (pmstp->pm_idledown_id)
231 return (DDI_FAILURE);
232
233 for (i = 0; i < PM_MAX_CLONE; i++)
234 cv_destroy(&pm_clones_cv[i]);
235
236 ddi_remove_minor_node(dip, NULL);
237 pmstp->pm_instance = -1;
238 return (DDI_SUCCESS);
239
240 default:
241 return (DDI_FAILURE);
242 }
243 }
244
245 static int
246 pm_close_direct_pm_device(dev_info_t *dip, void *arg)
247 {
248 int clone;
249 char *pathbuf;
250 pm_info_t *info = PM_GET_PM_INFO(dip);
251
252 clone = *((int *)arg);
253
254 if (!info)
255 return (DDI_WALK_CONTINUE);
256
257 pathbuf = kmem_alloc(MAXPATHLEN, KM_SLEEP);
258 PM_LOCK_DIP(dip);
259 if (clone == info->pmi_clone) {
260 PMD(PMD_CLOSE, ("pm_close: found %s@%s(%s#%d)\n",
261 PM_DEVICE(dip)))
262 ASSERT(PM_ISDIRECT(dip));
263 info->pmi_dev_pm_state &= ~PM_DIRECT;
264 PM_UNLOCK_DIP(dip);
265 pm_proceed(dip, PMP_RELEASE, -1, -1);
266 /* Bring ourselves up if there is a keeper that is up */
267 (void) ddi_pathname(dip, pathbuf);
268 pm_dispatch_to_dep_thread(PM_DEP_WK_BRINGUP_SELF, NULL,
269 pathbuf, PM_DEP_NOWAIT, NULL, 0);
270 PM_LOCK_DIP(dip);
271 info->pmi_clone = 0;
272 PM_UNLOCK_DIP(dip);
273 } else {
274 PM_UNLOCK_DIP(dip);
275 }
276 kmem_free(pathbuf, MAXPATHLEN);
277
278 /* restart autopm on device released from direct pm */
279 pm_rescan(dip);
280
281 return (DDI_WALK_CONTINUE);
282 }
283
284 #define PM_REQ 1
285 #define NOSTRUCT 2
286 #define DIP 3
287 #define NODIP 4
288 #define NODEP 5
289 #define DEP 6
290 #define PM_PSC 7
291 #define PM_SRCH 8
292
293 #define CHECKPERMS 0x001
294 #define SU 0x002
295 #define SG 0x004
296 #define OWNER 0x008
297
298 #define INWHO 0x001
299 #define INDATAINT 0x002
300 #define INDATASTRING 0x004
301 #define INDEP 0x008
302 #define INDATAOUT 0x010
303 #define INDATA (INDATAOUT | INDATAINT | INDATASTRING | INDEP)
304
305 struct pm_cmd_info {
306 int cmd; /* command code */
307 char *name; /* printable string */
308 int supported; /* true if still supported */
309 int str_type; /* PM_REQ or NOSTRUCT */
310 int inargs; /* INWHO, INDATAINT, INDATASTRING, INDEP, */
311 /* INDATAOUT */
312 int diptype; /* DIP or NODIP */
313 int deptype; /* DEP or NODEP */
314 int permission; /* SU, GU, or CHECKPERMS */
315 };
316
317 #ifdef DEBUG
318 char *pm_cmd_string;
319 int pm_cmd;
320 #endif
321
322 /*
323 * Returns true if permission granted by credentials
324 */
325 static int
326 pm_perms(int perm, cred_t *cr)
327 {
328 if (perm == 0) /* no restrictions */
329 return (1);
330 if (perm == CHECKPERMS) /* ok for now (is checked later) */
331 return (1);
332 if ((perm & SU) && secpolicy_power_mgmt(cr) == 0) /* privileged? */
333 return (1);
334 if ((perm & SG) && (crgetgid(cr) == 0)) /* group 0 is ok */
335 return (1);
336 return (0);
337 }
338
339 #ifdef DEBUG
340 static int
341 print_info(dev_info_t *dip, void *arg)
342 {
343 _NOTE(ARGUNUSED(arg))
344 pm_info_t *info;
345 int i, j;
346 struct pm_component *cp;
347 extern int pm_cur_power(pm_component_t *cp);
348
349 info = PM_GET_PM_INFO(dip);
350 if (!info)
351 return (DDI_WALK_CONTINUE);
352 cmn_err(CE_CONT, "pm_info for %s\n", ddi_node_name(dip));
353 for (i = 0; i < PM_NUMCMPTS(dip); i++) {
354 cp = PM_CP(dip, i);
355 cmn_err(CE_CONT, "\tThresholds[%d] =", i);
356 for (j = 0; j < cp->pmc_comp.pmc_numlevels; j++)
357 cmn_err(CE_CONT, " %d", cp->pmc_comp.pmc_thresh[i]);
358 cmn_err(CE_CONT, "\n");
359 cmn_err(CE_CONT, "\tCurrent power[%d] = %d\n", i,
360 pm_cur_power(cp));
361 }
362 if (PM_ISDIRECT(dip))
363 cmn_err(CE_CONT, "\tDirect power management\n");
364 return (DDI_WALK_CONTINUE);
365 }
366 #endif
367
368 /*
369 * command, name, supported, str_type, inargs, diptype, deptype, permission
370 */
371 static struct pm_cmd_info pmci[] = {
372 {PM_SCHEDULE, "PM_SCHEDULE", 0},
373 {PM_GET_IDLE_TIME, "PM_GET_IDLE_TIME", 0},
374 {PM_GET_NUM_CMPTS, "PM_GET_NUM_CMPTS", 0},
375 {PM_GET_THRESHOLD, "PM_GET_THRESHOLD", 0},
376 {PM_SET_THRESHOLD, "PM_SET_THRESHOLD", 0},
377 {PM_GET_NORM_PWR, "PM_GET_NORM_PWR", 0},
378 {PM_SET_CUR_PWR, "PM_SET_CUR_PWR", 0},
379 {PM_GET_CUR_PWR, "PM_GET_CUR_PWR", 0},
380 {PM_GET_NUM_DEPS, "PM_GET_NUM_DEPS", 0},
381 {PM_GET_DEP, "PM_GET_DEP", 0},
382 {PM_ADD_DEP, "PM_ADD_DEP", 0},
383 {PM_REM_DEP, "PM_REM_DEP", 0},
384 {PM_REM_DEVICE, "PM_REM_DEVICE", 0},
385 {PM_REM_DEVICES, "PM_REM_DEVICES", 0},
386 {PM_REPARSE_PM_PROPS, "PM_REPARSE_PM_PROPS", 1, PM_REQ, INWHO, DIP,
387 NODEP},
388 {PM_DISABLE_AUTOPM, "PM_DISABLE_AUTOPM", 0},
389 {PM_REENABLE_AUTOPM, "PM_REENABLE_AUTOPM", 0},
390 {PM_SET_NORM_PWR, "PM_SET_NORM_PWR", 0 },
391 {PM_SET_DEVICE_THRESHOLD, "PM_SET_DEVICE_THRESHOLD", 1, PM_REQ,
392 INWHO, NODIP, NODEP, SU},
393 {PM_GET_SYSTEM_THRESHOLD, "PM_GET_SYSTEM_THRESHOLD", 1, NOSTRUCT},
394 {PM_GET_DEFAULT_SYSTEM_THRESHOLD, "PM_GET_DEFAULT_SYSTEM_THRESHOLD",
395 1, NOSTRUCT},
396 {PM_SET_SYSTEM_THRESHOLD, "PM_SET_SYSTEM_THRESHOLD", 1, NOSTRUCT,
397 0, 0, 0, SU},
398 {PM_START_PM, "PM_START_PM", 1, NOSTRUCT, 0, 0, 0, SU},
399 {PM_STOP_PM, "PM_STOP_PM", 1, NOSTRUCT, 0, 0, 0, SU},
400 {PM_RESET_PM, "PM_RESET_PM", 1, NOSTRUCT, 0, 0, 0, SU},
401 {PM_GET_STATS, "PM_GET_STATS", 1, PM_REQ, INWHO | INDATAOUT,
402 DIP, NODEP},
403 {PM_GET_DEVICE_THRESHOLD, "PM_GET_DEVICE_THRESHOLD", 1, PM_REQ, INWHO,
404 DIP, NODEP},
405 {PM_GET_POWER_NAME, "PM_GET_POWER_NAME", 1, PM_REQ, INWHO | INDATAOUT,
406 DIP, NODEP},
407 {PM_GET_POWER_LEVELS, "PM_GET_POWER_LEVELS", 1, PM_REQ,
408 INWHO | INDATAOUT, DIP, NODEP},
409 {PM_GET_NUM_COMPONENTS, "PM_GET_NUM_COMPONENTS", 1, PM_REQ, INWHO,
410 DIP, NODEP},
411 {PM_GET_COMPONENT_NAME, "PM_GET_COMPONENT_NAME", 1, PM_REQ,
412 INWHO | INDATAOUT, DIP, NODEP},
413 {PM_GET_NUM_POWER_LEVELS, "PM_GET_NUM_POWER_LEVELS", 1, PM_REQ, INWHO,
414 DIP, NODEP},
415 {PM_GET_STATE_CHANGE, "PM_GET_STATE_CHANGE", 1, PM_PSC},
416 {PM_GET_STATE_CHANGE_WAIT, "PM_GET_STATE_CHANGE_WAIT", 1, PM_PSC},
417 {PM_DIRECT_PM, "PM_DIRECT_PM", 1, PM_REQ, INWHO, DIP, NODEP,
418 (SU | SG)},
419 {PM_RELEASE_DIRECT_PM, "PM_RELEASE_DIRECT_PM", 1, PM_REQ, INWHO,
420 DIP, NODEP},
421 {PM_DIRECT_NOTIFY, "PM_DIRECT_NOTIFY", 1, PM_PSC},
422 {PM_DIRECT_NOTIFY_WAIT, "PM_DIRECT_NOTIFY_WAIT", 1, PM_PSC},
423 {PM_RESET_DEVICE_THRESHOLD, "PM_RESET_DEVICE_THRESHOLD", 1, PM_REQ,
424 INWHO, DIP, NODEP, SU},
425 {PM_GET_PM_STATE, "PM_GET_PM_STATE", 1, NOSTRUCT},
426 {PM_GET_AUTOS3_STATE, "PM_GET_AUTOS3_STATE", 1, NOSTRUCT},
427 {PM_GET_S3_SUPPORT_STATE, "PM_GET_S3_SUPPORT_STATE", 1, NOSTRUCT},
428 {PM_GET_DEVICE_TYPE, "PM_GET_DEVICE_TYPE", 1, PM_REQ, INWHO,
429 DIP, NODEP},
430 {PM_SET_COMPONENT_THRESHOLDS, "PM_SET_COMPONENT_THRESHOLDS", 1, PM_REQ,
431 INWHO | INDATAINT, NODIP, NODEP, SU},
432 {PM_GET_COMPONENT_THRESHOLDS, "PM_GET_COMPONENT_THRESHOLDS", 1, PM_REQ,
433 INWHO | INDATAOUT, DIP, NODEP},
434 {PM_IDLE_DOWN, "PM_IDLE_DOWN", 1, NOSTRUCT, 0, 0, 0, SU},
435 {PM_GET_DEVICE_THRESHOLD_BASIS, "PM_GET_DEVICE_THRESHOLD_BASIS", 1,
436 PM_REQ, INWHO, DIP, NODEP},
437 {PM_SET_CURRENT_POWER, "PM_SET_CURRENT_POWER", 1, PM_REQ, INWHO, DIP,
438 NODEP},
439 {PM_GET_CURRENT_POWER, "PM_GET_CURRENT_POWER", 1, PM_REQ, INWHO, DIP,
440 NODEP},
441 {PM_GET_FULL_POWER, "PM_GET_FULL_POWER", 1, PM_REQ, INWHO, DIP,
442 NODEP},
443 {PM_ADD_DEPENDENT, "PM_ADD_DEPENDENT", 1, PM_REQ, INWHO | INDATASTRING,
444 DIP, DEP, SU},
445 {PM_GET_TIME_IDLE, "PM_GET_TIME_IDLE", 1, PM_REQ, INWHO, DIP, NODEP},
446 {PM_ADD_DEPENDENT_PROPERTY, "PM_ADD_DEPENDENT_PROPERTY", 1, PM_REQ,
447 INWHO | INDATASTRING, NODIP, DEP, SU},
448 {PM_START_CPUPM, "PM_START_CPUPM", 1, NOSTRUCT, 0, 0, 0, SU},
449 {PM_START_CPUPM_EV, "PM_START_CPUPM_EV", 1, NOSTRUCT, 0,
450 0, 0, SU},
451 {PM_START_CPUPM_POLL, "PM_START_CPUPM_POLL", 1, NOSTRUCT, 0,
452 0, 0, SU},
453 {PM_STOP_CPUPM, "PM_STOP_CPUPM", 1, NOSTRUCT, 0, 0, 0, SU},
454 {PM_GET_CPU_THRESHOLD, "PM_GET_CPU_THRESHOLD", 1, NOSTRUCT},
455 {PM_SET_CPU_THRESHOLD, "PM_SET_CPU_THRESHOLD", 1, NOSTRUCT,
456 0, 0, 0, SU},
457 {PM_GET_CPUPM_STATE, "PM_GET_CPUPM_STATE", 1, NOSTRUCT},
458 {PM_START_AUTOS3, "PM_START_AUTOS3", 1, NOSTRUCT, 0, 0, 0, SU},
459 {PM_STOP_AUTOS3, "PM_STOP_AUTOS3", 1, NOSTRUCT, 0, 0, 0, SU},
460 {PM_ENABLE_S3, "PM_ENABLE_S3", 1, NOSTRUCT, 0, 0, 0, SU},
461 {PM_DISABLE_S3, "PM_DISABLE_S3", 1, NOSTRUCT, 0, 0, 0, SU},
462 {PM_ENTER_S3, "PM_ENTER_S3", 1, NOSTRUCT, 0, 0, 0, SU},
463 {PM_SEARCH_LIST, "PM_SEARCH_LIST", 1, PM_SRCH, 0, 0, 0, SU},
464 {PM_GET_CMD_NAME, "PM_GET_CMD_NAME", 1, PM_REQ, INDATAOUT, NODIP,
465 NODEP, 0},
466 {PM_DISABLE_CPU_DEEP_IDLE, "PM_DISABLE_CPU_DEEP_IDLE", 1, NOSTRUCT, 0,
467 0, 0, SU},
468 {PM_ENABLE_CPU_DEEP_IDLE, "PM_START_CPU_DEEP_IDLE", 1, NOSTRUCT, 0,
469 0, 0, SU},
470 {PM_DEFAULT_CPU_DEEP_IDLE, "PM_DFLT_CPU_DEEP_IDLE", 1, NOSTRUCT, 0,
471 0, 0, SU},
472 {0, NULL}
473 };
474
475 struct pm_cmd_info *
476 pc_info(int cmd)
477 {
478 struct pm_cmd_info *pcip;
479
480 for (pcip = pmci; pcip->name; pcip++) {
481 if (cmd == pcip->cmd)
482 return (pcip);
483 }
484 return (NULL);
485 }
486
487 static char *
488 pm_decode_cmd(int cmd)
489 {
490 static char invbuf[64];
491 struct pm_cmd_info *pcip = pc_info(cmd);
492 if (pcip != NULL)
493 return (pcip->name);
494 (void) sprintf(invbuf, "ioctl: invalid command %d\n", cmd);
495 return (invbuf);
496 }
497
498 /*
499 * Allocate scan resource, create taskq, then dispatch scan,
500 * called only if autopm is enabled.
501 */
502 int
503 pm_start_pm_walk(dev_info_t *dip, void *arg)
504 {
505 int cmd = *((int *)arg);
506 #ifdef PMDDEBUG
507 char *cmdstr = pm_decode_cmd(cmd);
508 #endif
509
510 if (!PM_GET_PM_INFO(dip) || PM_ISBC(dip))
511 return (DDI_WALK_CONTINUE);
512
513 switch (cmd) {
514 case PM_START_CPUPM:
515 case PM_START_CPUPM_POLL:
516 if (!PM_ISCPU(dip))
517 return (DDI_WALK_CONTINUE);
518 mutex_enter(&pm_scan_lock);
519 if (!PM_CPUPM_DISABLED && !PM_EVENT_CPUPM)
520 pm_scan_init(dip);
521 mutex_exit(&pm_scan_lock);
522 break;
523 case PM_START_PM:
524 mutex_enter(&pm_scan_lock);
525 if (PM_ISCPU(dip) && (PM_CPUPM_DISABLED || PM_EVENT_CPUPM)) {
526 mutex_exit(&pm_scan_lock);
527 return (DDI_WALK_CONTINUE);
528 }
529 if (autopm_enabled)
530 pm_scan_init(dip);
531 mutex_exit(&pm_scan_lock);
532 break;
533 }
534
535 /*
536 * Start doing pm on device: ensure pm_scan data structure initiated,
537 * no need to guarantee a successful scan run.
538 */
539 PMD(PMD_SCAN | PMD_IOCTL, ("ioctl: %s: scan %s@%s(%s#%d)\n", cmdstr,
540 PM_DEVICE(dip)))
541 pm_rescan(dip);
542
543 return (DDI_WALK_CONTINUE);
544 }
545
546 /*
547 * Bring devices to full power level, then stop scan
548 */
549 int
550 pm_stop_pm_walk(dev_info_t *dip, void *arg)
551 {
552 pm_info_t *info = PM_GET_PM_INFO(dip);
553 int cmd = *((int *)arg);
554 #ifdef PMDDEBUG
555 char *cmdstr = pm_decode_cmd(cmd);
556 #endif
557
558 if (!info)
559 return (DDI_WALK_CONTINUE);
560
561 switch (cmd) {
562 case PM_STOP_PM:
563 /*
564 * If CPU devices are being managed independently, then don't
565 * stop them as part of PM_STOP_PM. Only stop them as part of
566 * PM_STOP_CPUPM and PM_RESET_PM.
567 */
568 if (PM_ISCPU(dip) && PM_POLLING_CPUPM)
569 return (DDI_WALK_CONTINUE);
570 break;
571 case PM_STOP_CPUPM:
572 /*
573 * If stopping CPU devices and this device is not marked
574 * as a CPU device, then skip.
575 */
576 if (!PM_ISCPU(dip))
577 return (DDI_WALK_CONTINUE);
578 break;
579 }
580
581 /*
582 * Stop the current scan, and then bring it back to normal power.
583 */
584 if (!PM_ISBC(dip)) {
585 PMD(PMD_SCAN | PMD_IOCTL, ("ioctl: %s: stop scan for "
586 "%s@%s(%s#%d)\n", cmdstr, PM_DEVICE(dip)))
587 pm_scan_stop(dip);
588 }
589
590 if (!PM_ISBC(dip) && !PM_ISDIRECT(dip) &&
591 !pm_all_at_normal(dip)) {
592 PM_LOCK_DIP(dip);
593 if (info->pmi_dev_pm_state & PM_DETACHING) {
594 PMD(PMD_ALLNORM, ("ioctl: %s: deferring "
595 "all_to_normal because %s@%s(%s#%d) is detaching\n",
596 cmdstr, PM_DEVICE(dip)))
597 info->pmi_dev_pm_state |= PM_ALLNORM_DEFERRED;
598 PM_UNLOCK_DIP(dip);
599 return (DDI_WALK_CONTINUE);
600 }
601 PM_UNLOCK_DIP(dip);
602 if (pm_all_to_normal(dip, PM_CANBLOCK_FAIL) != DDI_SUCCESS) {
603 PMD(PMD_ERROR, ("ioctl: %s: could not bring %s@%s"
604 "(%s#%d) to normal\n", cmdstr, PM_DEVICE(dip)))
605 }
606 }
607
608 return (DDI_WALK_CONTINUE);
609 }
610
611 static int
612 pm_start_idledown(dev_info_t *dip, void *arg)
613 {
614 int flag = (int)(intptr_t)arg;
615 pm_scan_t *scanp = PM_GET_PM_SCAN(dip);
616
617 if (!scanp)
618 return (DDI_WALK_CONTINUE);
619
620 PM_LOCK_DIP(dip);
621 scanp->ps_idle_down |= flag;
622 PM_UNLOCK_DIP(dip);
623 pm_rescan(dip);
624
625 return (DDI_WALK_CONTINUE);
626 }
627
628 /*ARGSUSED*/
629 static int
630 pm_end_idledown(dev_info_t *dip, void *ignore)
631 {
632 pm_scan_t *scanp = PM_GET_PM_SCAN(dip);
633
634 if (!scanp)
635 return (DDI_WALK_CONTINUE);
636
637 PM_LOCK_DIP(dip);
638 /*
639 * The PMID_TIMERS bits are place holder till idledown expires.
640 * The bits are also the base for regenerating PMID_SCANS bits.
641 * While it's up to scan thread to clear up the PMID_SCANS bits
642 * after each scan run, PMID_TIMERS ensure aggressive scan down
643 * performance throughout the idledown period.
644 */
645 scanp->ps_idle_down &= ~PMID_TIMERS;
646 PM_UNLOCK_DIP(dip);
647
648 return (DDI_WALK_CONTINUE);
649 }
650
651 /*ARGSUSED*/
652 static void
653 pm_end_idledown_walk(void *ignore)
654 {
655 PMD(PMD_IDLEDOWN, ("ioctl: end_idledown: idledown_id(%lx) timer is "
656 "off\n", (ulong_t)pmstp->pm_idledown_id));
657
658 mutex_enter(&pm_scan_lock);
659 pmstp->pm_idledown_id = 0;
660 mutex_exit(&pm_scan_lock);
661
662 ddi_walk_devs(ddi_root_node(), pm_end_idledown, NULL);
663 }
664
665 /*
666 * pm_timeout_idledown - keep idledown effect for 10 seconds.
667 *
668 * Return 0 if another competing caller scheduled idledown timeout,
669 * otherwise, return idledown timeout_id.
670 */
671 static timeout_id_t
672 pm_timeout_idledown(void)
673 {
674 timeout_id_t to_id;
675
676 /*
677 * Keep idle-down in effect for either 10 seconds
678 * or length of a scan interval, which ever is greater.
679 */
680 mutex_enter(&pm_scan_lock);
681 if (pmstp->pm_idledown_id != 0) {
682 to_id = pmstp->pm_idledown_id;
683 pmstp->pm_idledown_id = 0;
684 mutex_exit(&pm_scan_lock);
685 (void) untimeout(to_id);
686 mutex_enter(&pm_scan_lock);
687 if (pmstp->pm_idledown_id != 0) {
688 PMD(PMD_IDLEDOWN, ("ioctl: timeout_idledown: "
689 "another caller got it, idledown_id(%lx)!\n",
690 (ulong_t)pmstp->pm_idledown_id))
691 mutex_exit(&pm_scan_lock);
692 return (0);
693 }
694 }
695 pmstp->pm_idledown_id = timeout(pm_end_idledown_walk, NULL,
696 PM_IDLEDOWN_TIME * hz);
697 PMD(PMD_IDLEDOWN, ("ioctl: timeout_idledown: idledown_id(%lx)\n",
698 (ulong_t)pmstp->pm_idledown_id))
699 mutex_exit(&pm_scan_lock);
700
701 return (pmstp->pm_idledown_id);
702 }
703
704 static int
705 pm_chpoll(dev_t dev, short events, int anyyet, short *reventsp,
706 struct pollhead **phpp)
707 {
708 extern struct pollhead pm_pollhead; /* kernel/os/sunpm.c */
709 int clone;
710
711 clone = PM_MINOR_TO_CLONE(getminor(dev));
712 PMD(PMD_IOCTL, ("ioctl: pm_chpoll: clone %d\n", clone))
713 if ((events & (POLLIN | POLLRDNORM)) && pm_poll_cnt[clone]) {
714 *reventsp |= (POLLIN | POLLRDNORM);
715 PMD(PMD_IOCTL, ("ioctl: pm_chpoll: reventsp set\n"))
716 } else {
717 *reventsp = 0;
718 if (!anyyet) {
719 PMD(PMD_IOCTL, ("ioctl: pm_chpoll: not anyyet\n"))
720 *phpp = &pm_pollhead;
721 }
722 #ifdef DEBUG
723 else {
724 PMD(PMD_IOCTL, ("ioctl: pm_chpoll: anyyet\n"))
725 }
726 #endif
727 }
728 return (0);
729 }
730
731 /*
732 * called by pm_dicard_entries to free up the memory. It also decrements
733 * pm_poll_cnt, if direct is non zero.
734 */
735 static void
736 pm_free_entries(psce_t *pscep, int clone, int direct)
737 {
738 pm_state_change_t *p;
739
740 if (pscep) {
741 p = pscep->psce_out;
742 while (p->size) {
743 if (direct) {
744 PMD(PMD_IOCTL, ("ioctl: discard: "
745 "pm_poll_cnt[%d] is %d before "
746 "ASSERT\n", clone,
747 pm_poll_cnt[clone]))
748 ASSERT(pm_poll_cnt[clone]);
749 pm_poll_cnt[clone]--;
750 }
751 kmem_free(p->physpath, p->size);
752 p->size = 0;
753 if (p == pscep->psce_last)
754 p = pscep->psce_first;
755 else
756 p++;
757 }
758 pscep->psce_out = pscep->psce_first;
759 pscep->psce_in = pscep->psce_first;
760 mutex_exit(&pscep->psce_lock);
761 }
762 }
763
764 /*
765 * Discard entries for this clone. Calls pm_free_entries to free up memory.
766 */
767 static void
768 pm_discard_entries(int clone)
769 {
770 psce_t *pscep;
771 int direct = 0;
772
773 mutex_enter(&pm_clone_lock);
774 if ((pscep = pm_psc_clone_to_direct(clone)) != NULL)
775 direct = 1;
776 pm_free_entries(pscep, clone, direct);
777 pscep = pm_psc_clone_to_interest(clone);
778 pm_free_entries(pscep, clone, 0);
779 mutex_exit(&pm_clone_lock);
780 }
781
782
783 static void
784 pm_set_idle_threshold(dev_info_t *dip, int thresh, int flag)
785 {
786 if (!PM_ISBC(dip) && !PM_ISDIRECT(dip)) {
787 switch (DEVI(dip)->devi_pm_flags & PMC_THRESH_ALL) {
788 case PMC_DEF_THRESH:
789 case PMC_CPU_THRESH:
790 PMD(PMD_IOCTL, ("ioctl: set_idle_threshold: set "
791 "%s@%s(%s#%d) default thresh to 0t%d\n",
792 PM_DEVICE(dip), thresh))
793 pm_set_device_threshold(dip, thresh, flag);
794 break;
795 default:
796 break;
797 }
798 }
799 }
800
801 static int
802 pm_set_idle_thresh_walk(dev_info_t *dip, void *arg)
803 {
804 int cmd = *((int *)arg);
805
806 if (!PM_GET_PM_INFO(dip))
807 return (DDI_WALK_CONTINUE);
808
809 switch (cmd) {
810 case PM_SET_SYSTEM_THRESHOLD:
811 if (DEVI(dip)->devi_pm_flags & PMC_CPU_THRESH)
812 break;
813 pm_set_idle_threshold(dip, pm_system_idle_threshold,
814 PMC_DEF_THRESH);
815 pm_rescan(dip);
816 break;
817 case PM_SET_CPU_THRESHOLD:
818 if (!PM_ISCPU(dip))
819 break;
820 pm_set_idle_threshold(dip, pm_cpu_idle_threshold,
821 PMC_CPU_THRESH);
822 pm_rescan(dip);
823 break;
824 }
825
826 return (DDI_WALK_CONTINUE);
827 }
828
829 /*ARGSUSED*/
830 static int
831 pm_getinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
832 {
833 dev_t dev;
834 int instance;
835
836 switch (infocmd) {
837 case DDI_INFO_DEVT2DEVINFO:
838 if (pmstp->pm_instance == -1)
839 return (DDI_FAILURE);
840 *result = pmstp->pm_dip;
841 return (DDI_SUCCESS);
842
843 case DDI_INFO_DEVT2INSTANCE:
844 dev = (dev_t)arg;
845 instance = getminor(dev) >> 8;
846 *result = (void *)(uintptr_t)instance;
847 return (DDI_SUCCESS);
848
849 default:
850 return (DDI_FAILURE);
851 }
852 }
853
854
855 /*ARGSUSED1*/
856 static int
857 pm_open(dev_t *devp, int flag, int otyp, cred_t *cr)
858 {
859 int clone;
860
861 if (otyp != OTYP_CHR)
862 return (EINVAL);
863
864 mutex_enter(&pm_clone_lock);
865 for (clone = 1; clone < PM_MAX_CLONE; clone++)
866 if (!pmstp->pm_clones[clone])
867 break;
868
869 if (clone == PM_MAX_CLONE) {
870 mutex_exit(&pm_clone_lock);
871 return (ENXIO);
872 }
873 pmstp->pm_cred[clone] = cr;
874 crhold(cr);
875
876 *devp = makedevice(getmajor(*devp), (pmstp->pm_instance << 8) + clone);
877 pmstp->pm_clones[clone] = 1;
878 mutex_exit(&pm_clone_lock);
879
880 return (0);
881 }
882
883 /*ARGSUSED1*/
884 static int
885 pm_close(dev_t dev, int flag, int otyp, cred_t *cr)
886 {
887 int clone;
888
889 if (otyp != OTYP_CHR)
890 return (EINVAL);
891
892 clone = PM_MINOR_TO_CLONE(getminor(dev));
893 PMD(PMD_CLOSE, ("pm_close: minor %x, clone %x\n", getminor(dev),
894 clone))
895
896 /*
897 * Walk the entire device tree to find the corresponding
898 * device and operate on it.
899 */
900 ddi_walk_devs(ddi_root_node(), pm_close_direct_pm_device,
901 (void *) &clone);
902
903 crfree(pmstp->pm_cred[clone]);
904 pmstp->pm_cred[clone] = 0;
905 pmstp->pm_clones[clone] = 0;
906 pm_discard_entries(clone);
907 ASSERT(pm_poll_cnt[clone] == 0);
908 pm_deregister_watcher(clone, NULL);
909 return (0);
910 }
911
912 /*ARGSUSED*/
913 static int
914 pm_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *cr, int *rval_p)
915 {
916 struct pm_cmd_info *pc_info(int);
917 struct pm_cmd_info *pcip = pc_info(cmd);
918 pm_req_t req;
919 dev_info_t *dip = NULL;
920 pm_info_t *info = NULL;
921 int clone;
922 char *cmdstr = pm_decode_cmd(cmd);
923 /*
924 * To keep devinfo nodes from going away while we're holding a
925 * pointer to their dip, pm_name_to_dip() optionally holds
926 * the devinfo node. If we've done that, we set dipheld
927 * so we know at the end of the ioctl processing to release the
928 * node again.
929 */
930 int dipheld = 0;
931 int icount = 0;
932 int i;
933 int comps;
934 size_t lencopied;
935 int ret = ENOTTY;
936 int curpower;
937 char who[MAXNAMELEN];
938 size_t wholen; /* copyinstr length */
939 size_t deplen = MAXNAMELEN;
940 char *dep, i_dep_buf[MAXNAMELEN];
941 char pathbuf[MAXNAMELEN];
942 struct pm_component *cp;
943 #ifdef _MULTI_DATAMODEL
944 pm_state_change32_t *pscp32;
945 pm_state_change32_t psc32;
946 pm_searchargs32_t psa32;
947 size_t copysize32;
948 #endif
949 pm_state_change_t *pscp;
950 pm_state_change_t psc;
951 pm_searchargs_t psa;
952 char listname[MAXCOPYBUF];
953 char manufacturer[MAXCOPYBUF];
954 char product[MAXCOPYBUF];
955 size_t copysize;
956
957 PMD(PMD_IOCTL, ("ioctl: %s: begin\n", cmdstr))
958
959 #ifdef DEBUG
960 if (cmd == 666) {
961 ddi_walk_devs(ddi_root_node(), print_info, NULL);
962 return (0);
963 }
964 ret = 0x0badcafe; /* sanity checking */
965 pm_cmd = cmd; /* for ASSERT debugging */
966 pm_cmd_string = cmdstr; /* for ASSERT debugging */
967 #endif
968
969
970 if (pcip == NULL) {
971 PMD(PMD_ERROR, ("ioctl: unknown command %d\n", cmd))
972 return (ENOTTY);
973 }
974 if (pcip == NULL || pcip->supported == 0) {
975 PMD(PMD_ERROR, ("ioctl: command %s no longer supported\n",
976 pcip->name))
977 return (ENOTTY);
978 }
979
980 wholen = 0;
981 dep = i_dep_buf;
982 i_dep_buf[0] = 0;
983 clone = PM_MINOR_TO_CLONE(getminor(dev));
984 if (!pm_perms(pcip->permission, pmstp->pm_cred[clone])) {
985 ret = EPERM;
986 return (ret);
987 }
988 switch (pcip->str_type) {
989 case PM_REQ:
990 {
991 #ifdef _MULTI_DATAMODEL
992 if ((mode & DATAMODEL_MASK) == DATAMODEL_ILP32) {
993 pm_req32_t req32;
994
995 if (ddi_copyin((caddr_t)arg, &req32,
996 sizeof (req32), mode) != 0) {
997 PMD(PMD_ERROR, ("ioctl: %s: ddi_copyin "
998 "EFAULT\n\n", cmdstr))
999 ret = EFAULT;
1000 break;
1001 }
1002 req.component = req32.component;
1003 req.value = req32.value;
1004 req.datasize = req32.datasize;
1005 if (pcip->inargs & INWHO) {
1006 ret = copyinstr((char *)(uintptr_t)
1007 req32.physpath, who, MAXNAMELEN, &wholen);
1008 if (ret) {
1009 PMD(PMD_ERROR, ("ioctl: %s: "
1010 "copyinstr fails returning %d\n",
1011 cmdstr, ret))
1012 break;
1013 }
1014 req.physpath = who;
1015 PMD(PMD_IOCTL, ("ioctl: %s: physpath=%s\n",
1016 cmdstr, req.physpath))
1017 }
1018 if (pcip->inargs & INDATA) {
1019 req.data = (void *)(uintptr_t)req32.data;
1020 req.datasize = req32.datasize;
1021 } else {
1022 req.data = NULL;
1023 req.datasize = 0;
1024 }
1025 switch (pcip->diptype) {
1026 case DIP:
1027 if (!(dip =
1028 pm_name_to_dip(req.physpath, 1))) {
1029 PMD(PMD_ERROR, ("ioctl: %s: "
1030 "pm_name_to_dip for %s failed\n",
1031 cmdstr, req.physpath))
1032 return (ENODEV);
1033 }
1034 ASSERT(!dipheld);
1035 dipheld++;
1036 break;
1037 case NODIP:
1038 break;
1039 default:
1040 /*
1041 * Internal error, invalid ioctl description
1042 * force debug entry even if pm_debug not set
1043 */
1044 #ifdef DEBUG
1045 pm_log("invalid diptype %d for cmd %d (%s)\n",
1046 pcip->diptype, cmd, pcip->name);
1047 #endif
1048 ASSERT(0);
1049 return (EIO);
1050 }
1051 if (pcip->inargs & INDATAINT) {
1052 int32_t int32buf;
1053 int32_t *i32p;
1054 int *ip;
1055 icount = req32.datasize / sizeof (int32_t);
1056 if (icount <= 0) {
1057 PMD(PMD_ERROR, ("ioctl: %s: datasize"
1058 " 0 or neg EFAULT\n\n", cmdstr))
1059 ret = EFAULT;
1060 break;
1061 }
1062 ASSERT(!(pcip->inargs & INDATASTRING));
1063 req.datasize = icount * sizeof (int);
1064 req.data = kmem_alloc(req.datasize, KM_SLEEP);
1065 ip = req.data;
1066 ret = 0;
1067 for (i = 0,
1068 i32p = (int32_t *)(uintptr_t)req32.data;
1069 i < icount; i++, i32p++) {
1070 if (ddi_copyin((void *)i32p, &int32buf,
1071 sizeof (int32_t), mode)) {
1072 kmem_free(req.data,
1073 req.datasize);
1074 PMD(PMD_ERROR, ("ioctl: %s: "
1075 "entry %d EFAULT\n",
1076 cmdstr, i))
1077 ret = EFAULT;
1078 break;
1079 }
1080 *ip++ = (int)int32buf;
1081 }
1082 if (ret)
1083 break;
1084 }
1085 if (pcip->inargs & INDATASTRING) {
1086 ASSERT(!(pcip->inargs & INDATAINT));
1087 ASSERT(pcip->deptype == DEP);
1088 if (req32.data != (uintptr_t)NULL) {
1089 if (copyinstr((void *)(uintptr_t)
1090 req32.data, dep, deplen, NULL)) {
1091 PMD(PMD_ERROR, ("ioctl: %s: "
1092 "0x%p dep size %lx, EFAULT"
1093 "\n", cmdstr,
1094 (void *)req.data, deplen))
1095 ret = EFAULT;
1096 break;
1097 }
1098 #ifdef DEBUG
1099 else {
1100 PMD(PMD_DEP, ("ioctl: %s: "
1101 "dep %s\n", cmdstr, dep))
1102 }
1103 #endif
1104 } else {
1105 PMD(PMD_ERROR, ("ioctl: %s: no "
1106 "dependent\n", cmdstr))
1107 ret = EINVAL;
1108 break;
1109 }
1110 }
1111 } else
1112 #endif /* _MULTI_DATAMODEL */
1113 {
1114 if (ddi_copyin((caddr_t)arg,
1115 &req, sizeof (req), mode) != 0) {
1116 PMD(PMD_ERROR, ("ioctl: %s: ddi_copyin "
1117 "EFAULT\n\n", cmdstr))
1118 ret = EFAULT;
1119 break;
1120 }
1121 if (pcip->inargs & INWHO) {
1122 ret = copyinstr((char *)req.physpath, who,
1123 MAXNAMELEN, &wholen);
1124 if (ret) {
1125 PMD(PMD_ERROR, ("ioctl: %s copyinstr"
1126 " fails returning %d\n", cmdstr,
1127 ret))
1128 break;
1129 }
1130 req.physpath = who;
1131 PMD(PMD_IOCTL, ("ioctl: %s: physpath=%s\n",
1132 cmdstr, req.physpath))
1133 }
1134 if (!(pcip->inargs & INDATA)) {
1135 req.data = NULL;
1136 req.datasize = 0;
1137 }
1138 switch (pcip->diptype) {
1139 case DIP:
1140 if (!(dip =
1141 pm_name_to_dip(req.physpath, 1))) {
1142 PMD(PMD_ERROR, ("ioctl: %s: "
1143 "pm_name_to_dip for %s failed\n",
1144 cmdstr, req.physpath))
1145 return (ENODEV);
1146 }
1147 ASSERT(!dipheld);
1148 dipheld++;
1149 break;
1150 case NODIP:
1151 break;
1152 default:
1153 /*
1154 * Internal error, invalid ioctl description
1155 * force debug entry even if pm_debug not set
1156 */
1157 #ifdef DEBUG
1158 pm_log("invalid diptype %d for cmd %d (%s)\n",
1159 pcip->diptype, cmd, pcip->name);
1160 #endif
1161 ASSERT(0);
1162 return (EIO);
1163 }
1164 if (pcip->inargs & INDATAINT) {
1165 int *ip;
1166
1167 ASSERT(!(pcip->inargs & INDATASTRING));
1168 ip = req.data;
1169 icount = req.datasize / sizeof (int);
1170 if (icount <= 0) {
1171 PMD(PMD_ERROR, ("ioctl: %s: datasize"
1172 " 0 or neg EFAULT\n\n", cmdstr))
1173 ret = EFAULT;
1174 break;
1175 }
1176 req.data = kmem_alloc(req.datasize, KM_SLEEP);
1177 if (ddi_copyin((caddr_t)ip, req.data,
1178 req.datasize, mode) != 0) {
1179 PMD(PMD_ERROR, ("ioctl: %s: ddi_copyin "
1180 "EFAULT\n\n", cmdstr))
1181 ret = EFAULT;
1182 break;
1183 }
1184 }
1185 if (pcip->inargs & INDATASTRING) {
1186 ASSERT(!(pcip->inargs & INDATAINT));
1187 ASSERT(pcip->deptype == DEP);
1188 if (req.data != NULL) {
1189 if (copyinstr((caddr_t)req.data,
1190 dep, deplen, NULL)) {
1191 PMD(PMD_ERROR, ("ioctl: %s: "
1192 "0x%p dep size %lu, "
1193 "EFAULT\n", cmdstr,
1194 (void *)req.data, deplen))
1195 ret = EFAULT;
1196 break;
1197 }
1198 #ifdef DEBUG
1199 else {
1200 PMD(PMD_DEP, ("ioctl: %s: "
1201 "dep %s\n", cmdstr, dep))
1202 }
1203 #endif
1204 } else {
1205 PMD(PMD_ERROR, ("ioctl: %s: no "
1206 "dependent\n", cmdstr))
1207 ret = EINVAL;
1208 break;
1209 }
1210 }
1211 }
1212 /*
1213 * Now we've got all the args in for the commands that
1214 * use the new pm_req struct.
1215 */
1216 switch (cmd) {
1217 case PM_REPARSE_PM_PROPS:
1218 {
1219 struct dev_ops *drv;
1220 struct cb_ops *cb;
1221 void *propval;
1222 int length;
1223 /*
1224 * This ioctl is provided only for the ddivs pm test.
1225 * We only do it to a driver which explicitly allows
1226 * us to do so by exporting a pm-reparse-ok property.
1227 * We only care whether the property exists or not.
1228 */
1229 if ((drv = ddi_get_driver(dip)) == NULL) {
1230 ret = EINVAL;
1231 break;
1232 }
1233 if ((cb = drv->devo_cb_ops) != NULL) {
1234 if ((*cb->cb_prop_op)(DDI_DEV_T_ANY, dip,
1235 PROP_LEN_AND_VAL_ALLOC, (DDI_PROP_CANSLEEP |
1236 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM),
1237 "pm-reparse-ok", (caddr_t)&propval,
1238 &length) != DDI_SUCCESS) {
1239 ret = EINVAL;
1240 break;
1241 }
1242 } else if (ddi_prop_op(DDI_DEV_T_ANY, dip,
1243 PROP_LEN_AND_VAL_ALLOC, (DDI_PROP_CANSLEEP |
1244 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM),
1245 "pm-reparse-ok", (caddr_t)&propval,
1246 &length) != DDI_SUCCESS) {
1247 ret = EINVAL;
1248 break;
1249 }
1250 kmem_free(propval, length);
1251 ret = e_new_pm_props(dip);
1252 break;
1253 }
1254
1255 case PM_GET_DEVICE_THRESHOLD:
1256 {
1257 PM_LOCK_DIP(dip);
1258 if (!PM_GET_PM_INFO(dip) || PM_ISBC(dip)) {
1259 PM_UNLOCK_DIP(dip);
1260 PMD(PMD_ERROR, ("ioctl: %s: ENODEV\n",
1261 cmdstr))
1262 ret = ENODEV;
1263 break;
1264 }
1265 *rval_p = DEVI(dip)->devi_pm_dev_thresh;
1266 PM_UNLOCK_DIP(dip);
1267 ret = 0;
1268 break;
1269 }
1270
1271 case PM_DIRECT_PM:
1272 {
1273 int has_dep;
1274 if ((info = PM_GET_PM_INFO(dip)) == NULL) {
1275 PMD(PMD_ERROR | PMD_DPM, ("ioctl: %s: "
1276 "ENODEV\n", cmdstr))
1277 ret = ENODEV;
1278 break;
1279 }
1280 /*
1281 * Check to see if we are there is a dependency on
1282 * this kept device, if so, return EBUSY.
1283 */
1284 (void) ddi_pathname(dip, pathbuf);
1285 pm_dispatch_to_dep_thread(PM_DEP_WK_CHECK_KEPT,
1286 NULL, pathbuf, PM_DEP_WAIT, &has_dep, 0);
1287 if (has_dep) {
1288 PMD(PMD_ERROR | PMD_DPM, ("%s EBUSY\n",
1289 cmdstr))
1290 ret = EBUSY;
1291 break;
1292 }
1293 PM_LOCK_DIP(dip);
1294 if (PM_ISDIRECT(dip) || (info->pmi_clone != 0)) {
1295 PMD(PMD_ERROR | PMD_DPM, ("ioctl: %s: "
1296 "%s@%s(%s#%d): EBUSY\n", cmdstr,
1297 PM_DEVICE(dip)))
1298 PM_UNLOCK_DIP(dip);
1299 ret = EBUSY;
1300 break;
1301 }
1302 info->pmi_dev_pm_state |= PM_DIRECT;
1303 info->pmi_clone = clone;
1304 PM_UNLOCK_DIP(dip);
1305 PMD(PMD_DPM, ("ioctl: %s: info %p, pmi_clone %d\n",
1306 cmdstr, (void *)info, clone))
1307 mutex_enter(&pm_clone_lock);
1308 pm_register_watcher(clone, dip);
1309 mutex_exit(&pm_clone_lock);
1310 ret = 0;
1311 break;
1312 }
1313
1314 case PM_RELEASE_DIRECT_PM:
1315 {
1316 if ((info = PM_GET_PM_INFO(dip)) == NULL) {
1317 PMD(PMD_ERROR | PMD_DPM, ("ioctl: %s: "
1318 "ENODEV\n", cmdstr))
1319 ret = ENODEV;
1320 break;
1321 }
1322 PM_LOCK_DIP(dip);
1323 if (info->pmi_clone != clone) {
1324 PMD(PMD_ERROR | PMD_DPM, ("ioctl: %s: "
1325 "%s@%s(%s#%d) EINVAL\n", cmdstr,
1326 PM_DEVICE(dip)))
1327 ret = EINVAL;
1328 PM_UNLOCK_DIP(dip);
1329 break;
1330 }
1331 ASSERT(PM_ISDIRECT(dip));
1332 info->pmi_dev_pm_state &= ~PM_DIRECT;
1333 PM_UNLOCK_DIP(dip);
1334 /* Bring ourselves up if there is a keeper. */
1335 (void) ddi_pathname(dip, pathbuf);
1336 pm_dispatch_to_dep_thread(PM_DEP_WK_BRINGUP_SELF,
1337 NULL, pathbuf, PM_DEP_WAIT, NULL, 0);
1338 pm_discard_entries(clone);
1339 pm_deregister_watcher(clone, dip);
1340 /*
1341 * Now we could let the other threads that are
1342 * trying to do a DIRECT_PM thru
1343 */
1344 PM_LOCK_DIP(dip);
1345 info->pmi_clone = 0;
1346 PM_UNLOCK_DIP(dip);
1347 pm_proceed(dip, PMP_RELEASE, -1, -1);
1348 PMD(PMD_RESCAN | PMD_DPM, ("ioctl: %s: rescan\n",
1349 cmdstr))
1350 pm_rescan(dip);
1351 ret = 0;
1352 break;
1353 }
1354
1355 case PM_SET_CURRENT_POWER:
1356 {
1357 int comp = req.component;
1358 int value = req.value;
1359 PMD(PMD_DPM, ("ioctl: %s: %s component %d to value "
1360 "%d\n", cmdstr, req.physpath, comp, value))
1361 if (!e_pm_valid_comp(dip, comp, NULL) ||
1362 !e_pm_valid_power(dip, comp, value)) {
1363 PMD(PMD_ERROR | PMD_DPM, ("ioctl: %s: "
1364 "physpath=%s, comp=%d, level=%d, fails\n",
1365 cmdstr, req.physpath, comp, value))
1366 ret = EINVAL;
1367 break;
1368 }
1369
1370 if ((info = PM_GET_PM_INFO(dip)) == NULL) {
1371 PMD(PMD_ERROR | PMD_DPM, ("ioctl: %s: "
1372 "ENODEV\n", cmdstr))
1373 ret = ENODEV;
1374 break;
1375 }
1376 if (info->pmi_clone != clone) {
1377 PMD(PMD_ERROR | PMD_DPM, ("ioctl: %s: "
1378 "(not owner) %s fails; clone %d, owner %d"
1379 "\n", cmdstr, req.physpath, clone,
1380 info->pmi_clone))
1381 ret = EINVAL;
1382 break;
1383 }
1384 ASSERT(PM_ISDIRECT(dip));
1385
1386 if (pm_set_power(dip, comp, value, PM_LEVEL_EXACT,
1387 PM_CANBLOCK_BLOCK, 0, &ret) != DDI_SUCCESS) {
1388 PMD(PMD_ERROR | PMD_DPM, ("ioctl: %s: "
1389 "pm_set_power for %s fails, errno=%d\n",
1390 cmdstr, req.physpath, ret))
1391 break;
1392 }
1393
1394 pm_proceed(dip, PMP_SETPOWER, comp, value);
1395
1396 /*
1397 * Power down all idle components if console framebuffer
1398 * is powered off.
1399 */
1400 if (PM_IS_CFB(dip) && (pm_system_idle_threshold ==
1401 pm_default_idle_threshold)) {
1402 dev_info_t *root = ddi_root_node();
1403 if (PM_ISBC(dip)) {
1404 if (comp == 0 && value == 0 &&
1405 (pm_timeout_idledown() != 0)) {
1406 ddi_walk_devs(root,
1407 pm_start_idledown,
1408 (void *)PMID_CFB);
1409 }
1410 } else {
1411 int count = 0;
1412 for (i = 0; i < PM_NUMCMPTS(dip); i++) {
1413 ret = pm_get_current_power(dip,
1414 i, &curpower);
1415 if (ret == DDI_SUCCESS &&
1416 curpower == 0)
1417 count++;
1418 }
1419 if ((count == PM_NUMCMPTS(dip)) &&
1420 (pm_timeout_idledown() != 0)) {
1421 ddi_walk_devs(root,
1422 pm_start_idledown,
1423 (void *)PMID_CFB);
1424 }
1425 }
1426 }
1427
1428 PMD(PMD_RESCAN | PMD_DPM, ("ioctl: %s: rescan\n",
1429 cmdstr))
1430 pm_rescan(dip);
1431 *rval_p = 0;
1432 ret = 0;
1433 break;
1434 }
1435
1436 case PM_GET_FULL_POWER:
1437 {
1438 int normal;
1439 ASSERT(dip);
1440 PMD(PMD_NORM, ("ioctl: %s: %s component %d\n",
1441 cmdstr, req.physpath, req.component))
1442 normal = pm_get_normal_power(dip, req.component);
1443
1444 if (normal == DDI_FAILURE) {
1445 PMD(PMD_ERROR | PMD_NORM, ("ioctl: %s: "
1446 "returns EINVAL\n", cmdstr))
1447 ret = EINVAL;
1448 break;
1449 }
1450 *rval_p = normal;
1451 PMD(PMD_NORM, ("ioctl: %s: returns %d\n",
1452 cmdstr, normal))
1453 ret = 0;
1454 break;
1455 }
1456
1457 case PM_GET_CURRENT_POWER:
1458 {
1459 if (pm_get_current_power(dip, req.component,
1460 rval_p) != DDI_SUCCESS) {
1461 PMD(PMD_ERROR | PMD_DPM, ("ioctl: %s "
1462 "EINVAL\n", cmdstr))
1463 ret = EINVAL;
1464 break;
1465 }
1466 PMD(PMD_DPM, ("ioctl: %s: %s comp %d returns %d\n",
1467 cmdstr, req.physpath, req.component, *rval_p))
1468 if (*rval_p == PM_LEVEL_UNKNOWN)
1469 ret = EAGAIN;
1470 else
1471 ret = 0;
1472 break;
1473 }
1474
1475 case PM_GET_TIME_IDLE:
1476 {
1477 time_t timestamp;
1478 int comp = req.component;
1479 pm_component_t *cp;
1480 if (!e_pm_valid_comp(dip, comp, &cp)) {
1481 PMD(PMD_ERROR, ("ioctl: %s: %s@%s(%s#%d) "
1482 "component %d > numcmpts - 1 %d--EINVAL\n",
1483 cmdstr, PM_DEVICE(dip), comp,
1484 PM_NUMCMPTS(dip) - 1))
1485 ret = EINVAL;
1486 break;
1487 }
1488 timestamp = cp->pmc_timestamp;
1489 if (timestamp) {
1490 time_t now;
1491 (void) drv_getparm(TIME, &now);
1492 *rval_p = (now - timestamp);
1493 } else {
1494 *rval_p = 0;
1495 }
1496 ret = 0;
1497 break;
1498 }
1499
1500 case PM_ADD_DEPENDENT:
1501 {
1502 dev_info_t *kept_dip;
1503
1504 PMD(PMD_KEEPS, ("%s, kept %s, keeper %s\n", cmdstr,
1505 dep, req.physpath))
1506
1507 /*
1508 * hold and install kept while processing dependency
1509 * keeper (in .physpath) has already been held.
1510 */
1511 if (dep[0] == '\0') {
1512 PMD(PMD_ERROR, ("kept NULL or null\n"))
1513 ret = EINVAL;
1514 break;
1515 } else if ((kept_dip =
1516 pm_name_to_dip(dep, 1)) == NULL) {
1517 PMD(PMD_ERROR, ("no dip for kept %s\n", dep))
1518 ret = ENODEV;
1519 break;
1520 } else if (kept_dip == dip) {
1521 PMD(PMD_ERROR, ("keeper(%s, %p) - kept(%s, %p) "
1522 "self-dependency not allowed.\n",
1523 dep, (void *)kept_dip, req.physpath,
1524 (void *) dip))
1525 PM_RELE(dip); /* release "double" hold */
1526 ret = EINVAL;
1527 break;
1528 }
1529 ASSERT(!(strcmp(req.physpath, (char *)dep) == 0));
1530
1531 /*
1532 * record dependency, then walk through device tree
1533 * independently on behalf of kept and keeper to
1534 * establish newly created dependency.
1535 */
1536 pm_dispatch_to_dep_thread(PM_DEP_WK_RECORD_KEEPER,
1537 req.physpath, dep, PM_DEP_WAIT, NULL, 0);
1538
1539 /*
1540 * release kept after establishing dependency, keeper
1541 * is released as part of ioctl exit processing.
1542 */
1543 PM_RELE(kept_dip);
1544 *rval_p = 0;
1545 ret = 0;
1546 break;
1547 }
1548
1549 case PM_ADD_DEPENDENT_PROPERTY:
1550 {
1551 char *keeper, *kept;
1552
1553 if (dep[0] == '\0') {
1554 PMD(PMD_ERROR, ("ioctl: %s: dep NULL or "
1555 "null\n", cmdstr))
1556 ret = EINVAL;
1557 break;
1558 }
1559 kept = dep;
1560 keeper = req.physpath;
1561 /*
1562 * record keeper - kept dependency, then walk through
1563 * device tree to find out all attached keeper, walk
1564 * through again to apply dependency to all the
1565 * potential kept.
1566 */
1567 pm_dispatch_to_dep_thread(
1568 PM_DEP_WK_RECORD_KEEPER_PROP, keeper, kept,
1569 PM_DEP_WAIT, NULL, 0);
1570
1571 *rval_p = 0;
1572 ret = 0;
1573 break;
1574 }
1575
1576 case PM_SET_DEVICE_THRESHOLD:
1577 {
1578 pm_thresh_rec_t *rp;
1579 pm_pte_t *ep; /* threshold header storage */
1580 int *tp; /* threshold storage */
1581 size_t size;
1582 extern int pm_thresh_specd(dev_info_t *);
1583
1584 /*
1585 * The header struct plus one entry struct plus one
1586 * threshold plus the length of the string
1587 */
1588 size = sizeof (pm_thresh_rec_t) +
1589 (sizeof (pm_pte_t) * 1) +
1590 (1 * sizeof (int)) +
1591 strlen(req.physpath) + 1;
1592
1593 rp = kmem_zalloc(size, KM_SLEEP);
1594 rp->ptr_size = size;
1595 rp->ptr_numcomps = 0; /* means device threshold */
1596 ep = (pm_pte_t *)((intptr_t)rp + sizeof (*rp));
1597 rp->ptr_entries = ep;
1598 tp = (int *)((intptr_t)ep +
1599 (1 * sizeof (pm_pte_t)));
1600 ep->pte_numthresh = 1;
1601 ep->pte_thresh = tp;
1602 *tp++ = req.value;
1603 (void) strcat((char *)tp, req.physpath);
1604 rp->ptr_physpath = (char *)tp;
1605 ASSERT((intptr_t)tp + strlen(req.physpath) + 1 ==
1606 (intptr_t)rp + rp->ptr_size);
1607 PMD(PMD_THRESH, ("ioctl: %s: record thresh %d for "
1608 "%s\n", cmdstr, req.value, req.physpath))
1609 pm_record_thresh(rp);
1610 /*
1611 * Don't free rp, pm_record_thresh() keeps it.
1612 * We don't try to apply it ourselves because we'd need
1613 * to know too much about locking. Since we don't
1614 * hold a lock the entry could be removed before
1615 * we get here
1616 */
1617 ASSERT(dip == NULL);
1618 ret = 0; /* can't fail now */
1619 if (!(dip = pm_name_to_dip(req.physpath, 1))) {
1620 break;
1621 }
1622 (void) pm_thresh_specd(dip);
1623 PMD(PMD_DHR, ("ioctl: %s: releasing %s@%s(%s#%d)\n",
1624 cmdstr, PM_DEVICE(dip)))
1625 PM_RELE(dip);
1626 break;
1627 }
1628
1629 case PM_RESET_DEVICE_THRESHOLD:
1630 {
1631 /*
1632 * This only applies to a currently attached and power
1633 * managed node
1634 */
1635 /*
1636 * We don't do this to old-style drivers
1637 */
1638 info = PM_GET_PM_INFO(dip);
1639 if (info == NULL) {
1640 PMD(PMD_ERROR, ("ioctl: %s: %s not power "
1641 "managed\n", cmdstr, req.physpath))
1642 ret = EINVAL;
1643 break;
1644 }
1645 if (PM_ISBC(dip)) {
1646 PMD(PMD_ERROR, ("ioctl: %s: %s is BC\n",
1647 cmdstr, req.physpath))
1648 ret = EINVAL;
1649 break;
1650 }
1651 pm_unrecord_threshold(req.physpath);
1652 if (DEVI(dip)->devi_pm_flags & PMC_CPU_THRESH)
1653 pm_set_device_threshold(dip,
1654 pm_cpu_idle_threshold, PMC_CPU_THRESH);
1655 else
1656 pm_set_device_threshold(dip,
1657 pm_system_idle_threshold, PMC_DEF_THRESH);
1658 ret = 0;
1659 break;
1660 }
1661
1662 case PM_GET_NUM_COMPONENTS:
1663 {
1664 ret = 0;
1665 *rval_p = PM_NUMCMPTS(dip);
1666 break;
1667 }
1668
1669 case PM_GET_DEVICE_TYPE:
1670 {
1671 ret = 0;
1672 if ((info = PM_GET_PM_INFO(dip)) == NULL) {
1673 PMD(PMD_ERROR, ("ioctl: %s: "
1674 "PM_NO_PM_COMPONENTS\n", cmdstr))
1675 *rval_p = PM_NO_PM_COMPONENTS;
1676 break;
1677 }
1678 if (PM_ISBC(dip)) {
1679 *rval_p = PM_CREATE_COMPONENTS;
1680 } else {
1681 *rval_p = PM_AUTOPM;
1682 }
1683 break;
1684 }
1685
1686 case PM_SET_COMPONENT_THRESHOLDS:
1687 {
1688 int comps = 0;
1689 int *end = (int *)req.data + icount;
1690 pm_thresh_rec_t *rp;
1691 pm_pte_t *ep; /* threshold header storage */
1692 int *tp; /* threshold storage */
1693 int *ip;
1694 int j;
1695 size_t size;
1696 extern int pm_thresh_specd(dev_info_t *);
1697 extern int pm_valid_thresh(dev_info_t *,
1698 pm_thresh_rec_t *);
1699
1700 for (ip = req.data; *ip; ip++) {
1701 if (ip >= end) {
1702 ret = EFAULT;
1703 break;
1704 }
1705 comps++;
1706 /* skip over indicated number of entries */
1707 for (j = *ip; j; j--) {
1708 if (++ip >= end) {
1709 ret = EFAULT;
1710 break;
1711 }
1712 }
1713 if (ret)
1714 break;
1715 }
1716 if (ret)
1717 break;
1718 if ((intptr_t)ip != (intptr_t)end - sizeof (int)) {
1719 /* did not exactly fill buffer */
1720 ret = EINVAL;
1721 break;
1722 }
1723 if (comps == 0) {
1724 PMD(PMD_ERROR, ("ioctl: %s: %s 0 components"
1725 "--EINVAL\n", cmdstr, req.physpath))
1726 ret = EINVAL;
1727 break;
1728 }
1729 /*
1730 * The header struct plus one entry struct per component
1731 * plus the size of the lists minus the counts
1732 * plus the length of the string
1733 */
1734 size = sizeof (pm_thresh_rec_t) +
1735 (sizeof (pm_pte_t) * comps) + req.datasize -
1736 ((comps + 1) * sizeof (int)) +
1737 strlen(req.physpath) + 1;
1738
1739 rp = kmem_zalloc(size, KM_SLEEP);
1740 rp->ptr_size = size;
1741 rp->ptr_numcomps = comps;
1742 ep = (pm_pte_t *)((intptr_t)rp + sizeof (*rp));
1743 rp->ptr_entries = ep;
1744 tp = (int *)((intptr_t)ep +
1745 (comps * sizeof (pm_pte_t)));
1746 for (ip = req.data; *ip; ep++) {
1747 ep->pte_numthresh = *ip;
1748 ep->pte_thresh = tp;
1749 for (j = *ip++; j; j--) {
1750 *tp++ = *ip++;
1751 }
1752 }
1753 (void) strcat((char *)tp, req.physpath);
1754 rp->ptr_physpath = (char *)tp;
1755 ASSERT((intptr_t)end == (intptr_t)ip + sizeof (int));
1756 ASSERT((intptr_t)tp + strlen(req.physpath) + 1 ==
1757 (intptr_t)rp + rp->ptr_size);
1758
1759 ASSERT(dip == NULL);
1760 /*
1761 * If this is not a currently power managed node,
1762 * then we can't check for validity of the thresholds
1763 */
1764 if (!(dip = pm_name_to_dip(req.physpath, 1))) {
1765 /* don't free rp, pm_record_thresh uses it */
1766 pm_record_thresh(rp);
1767 PMD(PMD_ERROR, ("ioctl: %s: pm_name_to_dip "
1768 "for %s failed\n", cmdstr, req.physpath))
1769 ret = 0;
1770 break;
1771 }
1772 ASSERT(!dipheld);
1773 dipheld++;
1774
1775 if (!pm_valid_thresh(dip, rp)) {
1776 PMD(PMD_ERROR, ("ioctl: %s: invalid thresh "
1777 "for %s@%s(%s#%d)\n", cmdstr,
1778 PM_DEVICE(dip)))
1779 kmem_free(rp, size);
1780 ret = EINVAL;
1781 break;
1782 }
1783 /*
1784 * We don't just apply it ourselves because we'd need
1785 * to know too much about locking. Since we don't
1786 * hold a lock the entry could be removed before
1787 * we get here
1788 */
1789 pm_record_thresh(rp);
1790 (void) pm_thresh_specd(dip);
1791 ret = 0;
1792 break;
1793 }
1794
1795 case PM_GET_COMPONENT_THRESHOLDS:
1796 {
1797 int musthave;
1798 int numthresholds = 0;
1799 int wordsize;
1800 int numcomps;
1801 caddr_t uaddr = req.data; /* user address */
1802 int val; /* int value to be copied out */
1803 int32_t val32; /* int32 value to be copied out */
1804 caddr_t vaddr; /* address to copyout from */
1805 int j;
1806
1807 #ifdef _MULTI_DATAMODEL
1808 if ((mode & DATAMODEL_MASK) == DATAMODEL_ILP32) {
1809 wordsize = sizeof (int32_t);
1810 } else
1811 #endif /* _MULTI_DATAMODEL */
1812 {
1813 wordsize = sizeof (int);
1814 }
1815
1816 ASSERT(dip);
1817
1818 numcomps = PM_NUMCMPTS(dip);
1819 for (i = 0; i < numcomps; i++) {
1820 cp = PM_CP(dip, i);
1821 numthresholds += cp->pmc_comp.pmc_numlevels - 1;
1822 }
1823 musthave = (numthresholds + numcomps + 1) * wordsize;
1824 if (req.datasize < musthave) {
1825 PMD(PMD_ERROR, ("ioctl: %s: size %ld, need "
1826 "%d--EINVAL\n", cmdstr, req.datasize,
1827 musthave))
1828 ret = EINVAL;
1829 break;
1830 }
1831 PM_LOCK_DIP(dip);
1832 for (i = 0; i < numcomps; i++) {
1833 int *thp;
1834 cp = PM_CP(dip, i);
1835 thp = cp->pmc_comp.pmc_thresh;
1836 /* first copyout the count */
1837 if (wordsize == sizeof (int32_t)) {
1838 val32 = cp->pmc_comp.pmc_numlevels - 1;
1839 vaddr = (caddr_t)&val32;
1840 } else {
1841 val = cp->pmc_comp.pmc_numlevels - 1;
1842 vaddr = (caddr_t)&val;
1843 }
1844 if (ddi_copyout(vaddr, (void *)uaddr,
1845 wordsize, mode) != 0) {
1846 PM_UNLOCK_DIP(dip);
1847 PMD(PMD_ERROR, ("ioctl: %s: %s@%s"
1848 "(%s#%d) vaddr %p EFAULT\n",
1849 cmdstr, PM_DEVICE(dip),
1850 (void*)vaddr))
1851 ret = EFAULT;
1852 break;
1853 }
1854 vaddr = uaddr;
1855 vaddr += wordsize;
1856 uaddr = (caddr_t)vaddr;
1857 /* then copyout each threshold value */
1858 for (j = 0; j < cp->pmc_comp.pmc_numlevels - 1;
1859 j++) {
1860 if (wordsize == sizeof (int32_t)) {
1861 val32 = thp[j + 1];
1862 vaddr = (caddr_t)&val32;
1863 } else {
1864 val = thp[i + 1];
1865 vaddr = (caddr_t)&val;
1866 }
1867 if (ddi_copyout(vaddr, (void *) uaddr,
1868 wordsize, mode) != 0) {
1869 PM_UNLOCK_DIP(dip);
1870 PMD(PMD_ERROR, ("ioctl: %s: "
1871 "%s@%s(%s#%d) uaddr %p "
1872 "EFAULT\n", cmdstr,
1873 PM_DEVICE(dip),
1874 (void *)uaddr))
1875 ret = EFAULT;
1876 break;
1877 }
1878 vaddr = uaddr;
1879 vaddr += wordsize;
1880 uaddr = (caddr_t)vaddr;
1881 }
1882 }
1883 if (ret)
1884 break;
1885 /* last copyout a terminating 0 count */
1886 if (wordsize == sizeof (int32_t)) {
1887 val32 = 0;
1888 vaddr = (caddr_t)&val32;
1889 } else {
1890 ASSERT(wordsize == sizeof (int));
1891 val = 0;
1892 vaddr = (caddr_t)&val;
1893 }
1894 if (ddi_copyout(vaddr, uaddr, wordsize, mode) != 0) {
1895 PM_UNLOCK_DIP(dip);
1896 PMD(PMD_ERROR, ("ioctl: %s: %s@%s(%s#%d) "
1897 "vaddr %p (0 count) EFAULT\n", cmdstr,
1898 PM_DEVICE(dip), (void *)vaddr))
1899 ret = EFAULT;
1900 break;
1901 }
1902 /* finished, so don't need to increment addresses */
1903 PM_UNLOCK_DIP(dip);
1904 ret = 0;
1905 break;
1906 }
1907
1908 case PM_GET_STATS:
1909 {
1910 time_t now;
1911 time_t *timestamp;
1912 extern int pm_cur_power(pm_component_t *cp);
1913 int musthave;
1914 int wordsize;
1915
1916 #ifdef _MULTI_DATAMODEL
1917 if ((mode & DATAMODEL_MASK) == DATAMODEL_ILP32) {
1918 wordsize = sizeof (int32_t);
1919 } else
1920 #endif /* _MULTI_DATAMODEL */
1921 {
1922 wordsize = sizeof (int);
1923 }
1924
1925 comps = PM_NUMCMPTS(dip);
1926 if (comps == 0 || PM_GET_PM_INFO(dip) == NULL) {
1927 PMD(PMD_ERROR, ("ioctl: %s: %s no components"
1928 " or not power managed--EINVAL\n", cmdstr,
1929 req.physpath))
1930 ret = EINVAL;
1931 break;
1932 }
1933 musthave = comps * 2 * wordsize;
1934 if (req.datasize < musthave) {
1935 PMD(PMD_ERROR, ("ioctl: %s: size %lu, need "
1936 "%d--EINVAL\n", cmdstr, req.datasize,
1937 musthave))
1938 ret = EINVAL;
1939 break;
1940 }
1941
1942 PM_LOCK_DIP(dip);
1943 (void) drv_getparm(TIME, &now);
1944 timestamp = kmem_zalloc(comps * sizeof (time_t),
1945 KM_SLEEP);
1946 pm_get_timestamps(dip, timestamp);
1947 /*
1948 * First the current power levels
1949 */
1950 for (i = 0; i < comps; i++) {
1951 int curpwr;
1952 int32_t curpwr32;
1953 caddr_t cpaddr;
1954
1955 cp = PM_CP(dip, i);
1956 if (wordsize == sizeof (int)) {
1957 curpwr = pm_cur_power(cp);
1958 cpaddr = (caddr_t)&curpwr;
1959 } else {
1960 ASSERT(wordsize == sizeof (int32_t));
1961 curpwr32 = pm_cur_power(cp);
1962 cpaddr = (caddr_t)&curpwr32;
1963 }
1964 if (ddi_copyout(cpaddr, (void *) req.data,
1965 wordsize, mode) != 0) {
1966 PM_UNLOCK_DIP(dip);
1967 PMD(PMD_ERROR, ("ioctl: %s: %s@%s"
1968 "(%s#%d) req.data %p EFAULT\n",
1969 cmdstr, PM_DEVICE(dip),
1970 (void *)req.data))
1971 ASSERT(!dipheld);
1972 return (EFAULT);
1973 }
1974 cpaddr = (caddr_t)req.data;
1975 cpaddr += wordsize;
1976 req.data = cpaddr;
1977 }
1978 /*
1979 * Then the times remaining
1980 */
1981 for (i = 0; i < comps; i++) {
1982 int retval;
1983 int32_t retval32;
1984 caddr_t rvaddr;
1985 int curpwr;
1986
1987 cp = PM_CP(dip, i);
1988 curpwr = cp->pmc_cur_pwr;
1989 if (curpwr == 0 || timestamp[i] == 0) {
1990 PMD(PMD_STATS, ("ioctl: %s: "
1991 "cur_pwer %x, timestamp %lx\n",
1992 cmdstr, curpwr, timestamp[i]))
1993 retval = INT_MAX;
1994 } else {
1995 int thresh;
1996 (void) pm_current_threshold(dip, i,
1997 &thresh);
1998 retval = thresh - (now - timestamp[i]);
1999 PMD(PMD_STATS, ("ioctl: %s: current "
2000 "thresh %x, now %lx, timestamp %lx,"
2001 " retval %x\n", cmdstr, thresh, now,
2002 timestamp[i], retval))
2003 }
2004 if (wordsize == sizeof (int)) {
2005 rvaddr = (caddr_t)&retval;
2006 } else {
2007 ASSERT(wordsize == sizeof (int32_t));
2008 retval32 = retval;
2009 rvaddr = (caddr_t)&retval32;
2010 }
2011 if (ddi_copyout(rvaddr, (void *) req.data,
2012 wordsize, mode) != 0) {
2013 PM_UNLOCK_DIP(dip);
2014 PMD(PMD_ERROR, ("ioctl: %s: %s@%s"
2015 "(%s#%d) req.data %p EFAULT\n",
2016 cmdstr, PM_DEVICE(dip),
2017 (void *)req.data))
2018 ASSERT(!dipheld);
2019 kmem_free(timestamp,
2020 comps * sizeof (time_t));
2021 return (EFAULT);
2022 }
2023 rvaddr = (caddr_t)req.data;
2024 rvaddr += wordsize;
2025 req.data = (int *)rvaddr;
2026 }
2027 PM_UNLOCK_DIP(dip);
2028 *rval_p = comps;
2029 ret = 0;
2030 kmem_free(timestamp, comps * sizeof (time_t));
2031 break;
2032 }
2033
2034 case PM_GET_CMD_NAME:
2035 {
2036 PMD(PMD_IOCTL, ("%s: %s\n", cmdstr,
2037 pm_decode_cmd(req.value)))
2038 if (ret = copyoutstr(pm_decode_cmd(req.value),
2039 (char *)req.data, req.datasize, &lencopied)) {
2040 PMD(PMD_ERROR, ("ioctl: %s: %s@%s(%s#%d) "
2041 "copyoutstr %p failed--EFAULT\n", cmdstr,
2042 PM_DEVICE(dip), (void *)req.data))
2043 break;
2044 }
2045 *rval_p = lencopied;
2046 ret = 0;
2047 break;
2048 }
2049
2050 case PM_GET_COMPONENT_NAME:
2051 {
2052 ASSERT(dip);
2053 if (!e_pm_valid_comp(dip, req.component, &cp)) {
2054 PMD(PMD_ERROR, ("ioctl: %s: %s@%s(%s#%d) "
2055 "component %d > numcmpts - 1 %d--EINVAL\n",
2056 cmdstr, PM_DEVICE(dip), req.component,
2057 PM_NUMCMPTS(dip) - 1))
2058 ret = EINVAL;
2059 break;
2060 }
2061 if (ret = copyoutstr(cp->pmc_comp.pmc_name,
2062 (char *)req.data, req.datasize, &lencopied)) {
2063 PMD(PMD_ERROR, ("ioctl: %s: %s@%s(%s#%d) "
2064 "copyoutstr %p failed--EFAULT\n", cmdstr,
2065 PM_DEVICE(dip), (void *)req.data))
2066 break;
2067 }
2068 *rval_p = lencopied;
2069 ret = 0;
2070 break;
2071 }
2072
2073 case PM_GET_POWER_NAME:
2074 {
2075 int i;
2076
2077 ASSERT(dip);
2078 if (!e_pm_valid_comp(dip, req.component, &cp)) {
2079 PMD(PMD_ERROR, ("ioctl: %s: %s@%s(%s#%d) "
2080 "component %d > numcmpts - 1 %d--EINVAL\n",
2081 cmdstr, PM_DEVICE(dip), req.component,
2082 PM_NUMCMPTS(dip) - 1))
2083 ret = EINVAL;
2084 break;
2085 }
2086 if ((i = req.value) < 0 ||
2087 i > cp->pmc_comp.pmc_numlevels - 1) {
2088 PMD(PMD_ERROR, ("ioctl: %s: %s@%s(%s#%d) "
2089 "value %d > num_levels - 1 %d--EINVAL\n",
2090 cmdstr, PM_DEVICE(dip), req.value,
2091 cp->pmc_comp.pmc_numlevels - 1))
2092 ret = EINVAL;
2093 break;
2094 }
2095 dep = cp->pmc_comp.pmc_lnames[req.value];
2096 if (ret = copyoutstr(dep,
2097 req.data, req.datasize, &lencopied)) {
2098 PMD(PMD_ERROR, ("ioctl: %s: %s@%s(%s#%d) "
2099 "copyoutstr %p failed--EFAULT\n", cmdstr,
2100 PM_DEVICE(dip), (void *)req.data))
2101 break;
2102 }
2103 *rval_p = lencopied;
2104 ret = 0;
2105 break;
2106 }
2107
2108 case PM_GET_POWER_LEVELS:
2109 {
2110 int musthave;
2111 int numlevels;
2112 int wordsize;
2113
2114 #ifdef _MULTI_DATAMODEL
2115 if ((mode & DATAMODEL_MASK) == DATAMODEL_ILP32) {
2116 wordsize = sizeof (int32_t);
2117 } else
2118 #endif /* _MULTI_DATAMODEL */
2119 {
2120 wordsize = sizeof (int);
2121 }
2122 ASSERT(dip);
2123
2124 if (!e_pm_valid_comp(dip, req.component, &cp)) {
2125 PMD(PMD_ERROR, ("ioctl: %s: %s@%s(%s#%d) "
2126 "has %d components, component %d requested"
2127 "--EINVAL\n", cmdstr, PM_DEVICE(dip),
2128 PM_NUMCMPTS(dip), req.component))
2129 ret = EINVAL;
2130 break;
2131 }
2132 numlevels = cp->pmc_comp.pmc_numlevels;
2133 musthave = numlevels * wordsize;
2134 if (req.datasize < musthave) {
2135 PMD(PMD_ERROR, ("ioctl: %s: size %lu, need "
2136 "%d--EINVAL\n", cmdstr, req.datasize,
2137 musthave))
2138 ret = EINVAL;
2139 break;
2140 }
2141 PM_LOCK_DIP(dip);
2142 for (i = 0; i < numlevels; i++) {
2143 int level;
2144 int32_t level32;
2145 caddr_t laddr;
2146
2147 if (wordsize == sizeof (int)) {
2148 level = cp->pmc_comp.pmc_lvals[i];
2149 laddr = (caddr_t)&level;
2150 } else {
2151 level32 = cp->pmc_comp.pmc_lvals[i];
2152 laddr = (caddr_t)&level32;
2153 }
2154 if (ddi_copyout(laddr, (void *) req.data,
2155 wordsize, mode) != 0) {
2156 PM_UNLOCK_DIP(dip);
2157 PMD(PMD_ERROR, ("ioctl: %s: %s@%s"
2158 "(%s#%d) laddr %p EFAULT\n",
2159 cmdstr, PM_DEVICE(dip),
2160 (void *)laddr))
2161 ASSERT(!dipheld);
2162 return (EFAULT);
2163 }
2164 laddr = (caddr_t)req.data;
2165 laddr += wordsize;
2166 req.data = (int *)laddr;
2167 }
2168 PM_UNLOCK_DIP(dip);
2169 *rval_p = numlevels;
2170 ret = 0;
2171 break;
2172 }
2173
2174
2175 case PM_GET_NUM_POWER_LEVELS:
2176 {
2177 if (!e_pm_valid_comp(dip, req.component, &cp)) {
2178 PMD(PMD_ERROR, ("ioctl: %s: %s@%s(%s#%d) "
2179 "component %d > numcmpts - 1 %d--EINVAL\n",
2180 cmdstr, PM_DEVICE(dip), req.component,
2181 PM_NUMCMPTS(dip) - 1))
2182 ret = EINVAL;
2183 break;
2184 }
2185 *rval_p = cp->pmc_comp.pmc_numlevels;
2186 ret = 0;
2187 break;
2188 }
2189
2190 case PM_GET_DEVICE_THRESHOLD_BASIS:
2191 {
2192 ret = 0;
2193 PM_LOCK_DIP(dip);
2194 if ((info = PM_GET_PM_INFO(dip)) == NULL) {
2195 PM_UNLOCK_DIP(dip);
2196 PMD(PMD_ERROR, ("ioctl: %s: "
2197 "PM_NO_PM_COMPONENTS\n", cmdstr))
2198 *rval_p = PM_NO_PM_COMPONENTS;
2199 break;
2200 }
2201 if (PM_ISDIRECT(dip)) {
2202 PM_UNLOCK_DIP(dip);
2203 *rval_p = PM_DIRECTLY_MANAGED;
2204 break;
2205 }
2206 switch (DEVI(dip)->devi_pm_flags & PMC_THRESH_ALL) {
2207 case PMC_DEF_THRESH:
2208 case PMC_NEXDEF_THRESH:
2209 *rval_p = PM_DEFAULT_THRESHOLD;
2210 break;
2211 case PMC_DEV_THRESH:
2212 *rval_p = PM_DEVICE_THRESHOLD;
2213 break;
2214 case PMC_COMP_THRESH:
2215 *rval_p = PM_COMPONENT_THRESHOLD;
2216 break;
2217 case PMC_CPU_THRESH:
2218 *rval_p = PM_CPU_THRESHOLD;
2219 break;
2220 default:
2221 if (PM_ISBC(dip)) {
2222 *rval_p = PM_OLD_THRESHOLD;
2223 break;
2224 }
2225 PMD(PMD_ERROR, ("ioctl: %s: default, not "
2226 "BC--EINVAL", cmdstr))
2227 ret = EINVAL;
2228 break;
2229 }
2230 PM_UNLOCK_DIP(dip);
2231 break;
2232 }
2233 default:
2234 /*
2235 * Internal error, invalid ioctl description
2236 * force debug entry even if pm_debug not set
2237 */
2238 #ifdef DEBUG
2239 pm_log("invalid diptype %d for cmd %d (%s)\n",
2240 pcip->diptype, cmd, pcip->name);
2241 #endif
2242 ASSERT(0);
2243 return (EIO);
2244 }
2245 break;
2246 }
2247
2248 case PM_PSC:
2249 {
2250 /*
2251 * Commands that require pm_state_change_t as arg
2252 */
2253 #ifdef _MULTI_DATAMODEL
2254 if ((mode & DATAMODEL_MASK) == DATAMODEL_ILP32) {
2255 pscp32 = (pm_state_change32_t *)arg;
2256 if (ddi_copyin((caddr_t)arg, &psc32,
2257 sizeof (psc32), mode) != 0) {
2258 PMD(PMD_ERROR, ("ioctl: %s: ddi_copyin "
2259 "EFAULT\n\n", cmdstr))
2260 ASSERT(!dipheld);
2261 return (EFAULT);
2262 }
2263 psc.physpath = (caddr_t)(uintptr_t)psc32.physpath;
2264 psc.size = psc32.size;
2265 } else
2266 #endif /* _MULTI_DATAMODEL */
2267 {
2268 pscp = (pm_state_change_t *)arg;
2269 if (ddi_copyin((caddr_t)arg, &psc,
2270 sizeof (psc), mode) != 0) {
2271 PMD(PMD_ERROR, ("ioctl: %s: ddi_copyin "
2272 "EFAULT\n\n", cmdstr))
2273 ASSERT(!dipheld);
2274 return (EFAULT);
2275 }
2276 }
2277 switch (cmd) {
2278
2279 case PM_GET_STATE_CHANGE:
2280 case PM_GET_STATE_CHANGE_WAIT:
2281 {
2282 psce_t *pscep;
2283 pm_state_change_t *p;
2284 caddr_t physpath;
2285 size_t physlen;
2286
2287 /*
2288 * We want to know if any device has changed state.
2289 * We look up by clone. In case we have another thread
2290 * from the same process, we loop.
2291 * pm_psc_clone_to_interest() returns a locked entry.
2292 * We create an internal copy of the event entry prior
2293 * to copyout to user space because we don't want to
2294 * hold the psce_lock while doing copyout as we might
2295 * hit page fault which eventually brings us back
2296 * here requesting the same lock.
2297 */
2298 mutex_enter(&pm_clone_lock);
2299 if (!pm_interest_registered(clone))
2300 pm_register_watcher(clone, NULL);
2301 while ((pscep =
2302 pm_psc_clone_to_interest(clone)) == NULL) {
2303 if (cmd == PM_GET_STATE_CHANGE) {
2304 PMD(PMD_IOCTL, ("ioctl: %s: "
2305 "EWOULDBLOCK\n", cmdstr))
2306 mutex_exit(&pm_clone_lock);
2307 ASSERT(!dipheld);
2308 return (EWOULDBLOCK);
2309 } else {
2310 if (cv_wait_sig(&pm_clones_cv[clone],
2311 &pm_clone_lock) == 0) {
2312 mutex_exit(&pm_clone_lock);
2313 PMD(PMD_ERROR, ("ioctl: %s "
2314 "EINTR\n", cmdstr))
2315 ASSERT(!dipheld);
2316 return (EINTR);
2317 }
2318 }
2319 }
2320 mutex_exit(&pm_clone_lock);
2321
2322 physlen = pscep->psce_out->size;
2323 physpath = NULL;
2324 /*
2325 * If we were unable to store the path while bringing
2326 * up the console fb upon entering the prom, we give
2327 * a "" name with the overrun event set
2328 */
2329 if (physlen == (size_t)-1) { /* kmemalloc failed */
2330 physpath = kmem_zalloc(1, KM_SLEEP);
2331 physlen = 1;
2332 }
2333 if ((psc.physpath == NULL) || (psc.size < physlen)) {
2334 PMD(PMD_ERROR, ("ioctl: %s: EFAULT\n", cmdstr))
2335 mutex_exit(&pscep->psce_lock);
2336 ret = EFAULT;
2337 break;
2338 }
2339 if (physpath == NULL) {
2340 physpath = kmem_zalloc(physlen, KM_SLEEP);
2341 bcopy((const void *) pscep->psce_out->physpath,
2342 (void *) physpath, physlen);
2343 }
2344
2345 p = pscep->psce_out;
2346 #ifdef _MULTI_DATAMODEL
2347 if ((mode & DATAMODEL_MASK) == DATAMODEL_ILP32) {
2348 #ifdef DEBUG
2349 size_t usrcopysize;
2350 #endif
2351 psc32.flags = (ushort_t)p->flags;
2352 psc32.event = (ushort_t)p->event;
2353 psc32.timestamp = (int32_t)p->timestamp;
2354 psc32.component = (int32_t)p->component;
2355 psc32.old_level = (int32_t)p->old_level;
2356 psc32.new_level = (int32_t)p->new_level;
2357 copysize32 = ((intptr_t)&psc32.size -
2358 (intptr_t)&psc32.component);
2359 #ifdef DEBUG
2360 usrcopysize = ((intptr_t)&pscp32->size -
2361 (intptr_t)&pscp32->component);
2362 ASSERT(usrcopysize == copysize32);
2363 #endif
2364 } else
2365 #endif /* _MULTI_DATAMODEL */
2366 {
2367 psc.flags = p->flags;
2368 psc.event = p->event;
2369 psc.timestamp = p->timestamp;
2370 psc.component = p->component;
2371 psc.old_level = p->old_level;
2372 psc.new_level = p->new_level;
2373 copysize = ((long)&p->size -
2374 (long)&p->component);
2375 }
2376 if (p->size != (size_t)-1)
2377 kmem_free(p->physpath, p->size);
2378 p->size = 0;
2379 p->physpath = NULL;
2380 if (pscep->psce_out == pscep->psce_last)
2381 p = pscep->psce_first;
2382 else
2383 p++;
2384 pscep->psce_out = p;
2385 mutex_exit(&pscep->psce_lock);
2386
2387 ret = copyoutstr(physpath, psc.physpath,
2388 physlen, &lencopied);
2389 kmem_free(physpath, physlen);
2390 if (ret) {
2391 PMD(PMD_ERROR, ("ioctl: %s: copyoutstr %p "
2392 "failed--EFAULT\n", cmdstr,
2393 (void *)psc.physpath))
2394 break;
2395 }
2396
2397 #ifdef _MULTI_DATAMODEL
2398 if ((mode & DATAMODEL_MASK) == DATAMODEL_ILP32) {
2399 if (ddi_copyout(&psc32.component,
2400 &pscp32->component, copysize32, mode)
2401 != 0) {
2402 PMD(PMD_ERROR, ("ioctl: %s: copyout "
2403 "failed--EFAULT\n", cmdstr))
2404 ret = EFAULT;
2405 break;
2406 }
2407 } else
2408 #endif /* _MULTI_DATAMODEL */
2409 {
2410 if (ddi_copyout(&psc.component,
2411 &pscp->component, copysize, mode) != 0) {
2412 PMD(PMD_ERROR, ("ioctl: %s: copyout "
2413 "failed--EFAULT\n", cmdstr))
2414 ret = EFAULT;
2415 break;
2416 }
2417 }
2418 ret = 0;
2419 break;
2420 }
2421
2422 case PM_DIRECT_NOTIFY:
2423 case PM_DIRECT_NOTIFY_WAIT:
2424 {
2425 psce_t *pscep;
2426 pm_state_change_t *p;
2427 caddr_t physpath;
2428 size_t physlen;
2429 /*
2430 * We want to know if any direct device of ours has
2431 * something we should know about. We look up by clone.
2432 * In case we have another thread from the same process,
2433 * we loop.
2434 * pm_psc_clone_to_direct() returns a locked entry.
2435 */
2436 mutex_enter(&pm_clone_lock);
2437 while (pm_poll_cnt[clone] == 0 ||
2438 (pscep = pm_psc_clone_to_direct(clone)) == NULL) {
2439 if (cmd == PM_DIRECT_NOTIFY) {
2440 PMD(PMD_IOCTL, ("ioctl: %s: "
2441 "EWOULDBLOCK\n", cmdstr))
2442 mutex_exit(&pm_clone_lock);
2443 ASSERT(!dipheld);
2444 return (EWOULDBLOCK);
2445 } else {
2446 if (cv_wait_sig(&pm_clones_cv[clone],
2447 &pm_clone_lock) == 0) {
2448 mutex_exit(&pm_clone_lock);
2449 PMD(PMD_ERROR, ("ioctl: %s: "
2450 "EINTR\n", cmdstr))
2451 ASSERT(!dipheld);
2452 return (EINTR);
2453 }
2454 }
2455 }
2456 mutex_exit(&pm_clone_lock);
2457 physlen = pscep->psce_out->size;
2458 if ((psc.physpath == NULL) || (psc.size < physlen)) {
2459 mutex_exit(&pscep->psce_lock);
2460 PMD(PMD_ERROR, ("ioctl: %s: EFAULT\n",
2461 cmdstr))
2462 ret = EFAULT;
2463 break;
2464 }
2465 physpath = kmem_zalloc(physlen, KM_SLEEP);
2466 bcopy((const void *) pscep->psce_out->physpath,
2467 (void *) physpath, physlen);
2468
2469 p = pscep->psce_out;
2470 #ifdef _MULTI_DATAMODEL
2471 if ((mode & DATAMODEL_MASK) == DATAMODEL_ILP32) {
2472 #ifdef DEBUG
2473 size_t usrcopysize;
2474 #endif
2475 psc32.component = (int32_t)p->component;
2476 psc32.flags = (ushort_t)p->flags;
2477 psc32.event = (ushort_t)p->event;
2478 psc32.timestamp = (int32_t)p->timestamp;
2479 psc32.old_level = (int32_t)p->old_level;
2480 psc32.new_level = (int32_t)p->new_level;
2481 copysize32 = (intptr_t)&psc32.size -
2482 (intptr_t)&psc32.component;
2483 PMD(PMD_DPM, ("ioctl: %s: PDN32 %s, comp %d "
2484 "%d -> %d\n", cmdstr, physpath,
2485 p->component, p->old_level, p->new_level))
2486 #ifdef DEBUG
2487 usrcopysize = (intptr_t)&pscp32->size -
2488 (intptr_t)&pscp32->component;
2489 ASSERT(usrcopysize == copysize32);
2490 #endif
2491 } else
2492 #endif
2493 {
2494 psc.component = p->component;
2495 psc.flags = p->flags;
2496 psc.event = p->event;
2497 psc.timestamp = p->timestamp;
2498 psc.old_level = p->old_level;
2499 psc.new_level = p->new_level;
2500 copysize = (intptr_t)&p->size -
2501 (intptr_t)&p->component;
2502 PMD(PMD_DPM, ("ioctl: %s: PDN %s, comp %d "
2503 "%d -> %d\n", cmdstr, physpath,
2504 p->component, p->old_level, p->new_level))
2505 }
2506 mutex_enter(&pm_clone_lock);
2507 PMD(PMD_IOCTL, ("ioctl: %s: pm_poll_cnt[%d] is %d "
2508 "before decrement\n", cmdstr, clone,
2509 pm_poll_cnt[clone]))
2510 pm_poll_cnt[clone]--;
2511 mutex_exit(&pm_clone_lock);
2512 kmem_free(p->physpath, p->size);
2513 p->size = 0;
2514 p->physpath = NULL;
2515 if (pscep->psce_out == pscep->psce_last)
2516 p = pscep->psce_first;
2517 else
2518 p++;
2519 pscep->psce_out = p;
2520 mutex_exit(&pscep->psce_lock);
2521
2522 ret = copyoutstr(physpath, psc.physpath,
2523 physlen, &lencopied);
2524 kmem_free(physpath, physlen);
2525 if (ret) {
2526 PMD(PMD_ERROR, ("ioctl: %s: copyoutstr %p "
2527 "failed--EFAULT\n", cmdstr,
2528 (void *)psc.physpath))
2529 break;
2530 }
2531
2532 #ifdef _MULTI_DATAMODEL
2533 if ((mode & DATAMODEL_MASK) == DATAMODEL_ILP32) {
2534 if (ddi_copyout(&psc32.component,
2535 &pscp32->component, copysize32, mode)
2536 != 0) {
2537 PMD(PMD_ERROR, ("ioctl: %s: copyout "
2538 "failed--EFAULT\n", cmdstr))
2539 ret = EFAULT;
2540 break;
2541 }
2542 } else
2543 #endif /* _MULTI_DATAMODEL */
2544 {
2545 if (ddi_copyout(&psc.component,
2546 &pscp->component, copysize, mode) != 0) {
2547 PMD(PMD_ERROR, ("ioctl: %s: copyout "
2548 "failed--EFAULT\n", cmdstr))
2549 ret = EFAULT;
2550 break;
2551 }
2552 }
2553 ret = 0;
2554 break;
2555 }
2556 default:
2557 /*
2558 * Internal error, invalid ioctl description
2559 * force debug entry even if pm_debug not set
2560 */
2561 #ifdef DEBUG
2562 pm_log("invalid diptype %d for cmd %d (%s)\n",
2563 pcip->diptype, cmd, pcip->name);
2564 #endif
2565 ASSERT(0);
2566 return (EIO);
2567 }
2568 break;
2569 }
2570
2571 case PM_SRCH: /* command that takes a pm_searchargs_t arg */
2572 {
2573 /*
2574 * If no ppm, then there is nothing to search.
2575 */
2576 if (DEVI(ddi_root_node())->devi_pm_ppm == NULL) {
2577 ret = ENODEV;
2578 break;
2579 }
2580
2581 #ifdef _MULTI_DATAMODEL
2582 if ((mode & DATAMODEL_MASK) == DATAMODEL_ILP32) {
2583 if (ddi_copyin((caddr_t)arg, &psa32,
2584 sizeof (psa32), mode) != 0) {
2585 PMD(PMD_ERROR, ("ioctl: %s: ddi_copyin "
2586 "EFAULT\n\n", cmdstr))
2587 return (EFAULT);
2588 }
2589 if (copyinstr((void *)(uintptr_t)psa32.pms_listname,
2590 listname, MAXCOPYBUF, NULL)) {
2591 PMD(PMD_ERROR, ("ioctl: %s: 0x%p MAXCOPYBUF "
2592 "%d, " "EFAULT\n", cmdstr,
2593 (void *)(uintptr_t)psa32.pms_listname,
2594 MAXCOPYBUF))
2595 ret = EFAULT;
2596 break;
2597 }
2598 if (copyinstr((void *)(uintptr_t)psa32.pms_manufacturer,
2599 manufacturer, MAXCOPYBUF, NULL)) {
2600 PMD(PMD_ERROR, ("ioctl: %s: 0x%p MAXCOPYBUF "
2601 "%d, " "EFAULT\n", cmdstr,
2602 (void *)(uintptr_t)psa32.pms_manufacturer,
2603 MAXCOPYBUF))
2604 ret = EFAULT;
2605 break;
2606 }
2607 if (copyinstr((void *)(uintptr_t)psa32.pms_product,
2608 product, MAXCOPYBUF, NULL)) {
2609 PMD(PMD_ERROR, ("ioctl: %s: 0x%p MAXCOPYBUF "
2610 "%d, " "EFAULT\n", cmdstr,
2611 (void *)(uintptr_t)psa32.pms_product,
2612 MAXCOPYBUF))
2613 ret = EFAULT;
2614 break;
2615 }
2616 } else
2617 #endif /* _MULTI_DATAMODEL */
2618 {
2619 if (ddi_copyin((caddr_t)arg, &psa,
2620 sizeof (psa), mode) != 0) {
2621 PMD(PMD_ERROR, ("ioctl: %s: ddi_copyin "
2622 "EFAULT\n\n", cmdstr))
2623 return (EFAULT);
2624 }
2625 if (copyinstr(psa.pms_listname,
2626 listname, MAXCOPYBUF, NULL)) {
2627 PMD(PMD_ERROR, ("ioctl: %s: 0x%p MAXCOPYBUF "
2628 "%d, " "EFAULT\n", cmdstr,
2629 (void *)psa.pms_listname, MAXCOPYBUF))
2630 ret = EFAULT;
2631 break;
2632 }
2633 if (copyinstr(psa.pms_manufacturer,
2634 manufacturer, MAXCOPYBUF, NULL)) {
2635 PMD(PMD_ERROR, ("ioctl: %s: 0x%p MAXCOPYBUF "
2636 "%d, " "EFAULT\n", cmdstr,
2637 (void *)psa.pms_manufacturer, MAXCOPYBUF))
2638 ret = EFAULT;
2639 break;
2640 }
2641 if (copyinstr(psa.pms_product,
2642 product, MAXCOPYBUF, NULL)) {
2643 PMD(PMD_ERROR, ("ioctl: %s: 0x%p MAXCOPYBUF "
2644 "%d, " "EFAULT\n", cmdstr,
2645 (void *)psa.pms_product, MAXCOPYBUF))
2646 ret = EFAULT;
2647 break;
2648 }
2649 }
2650 psa.pms_listname = listname;
2651 psa.pms_manufacturer = manufacturer;
2652 psa.pms_product = product;
2653 switch (cmd) {
2654 case PM_SEARCH_LIST:
2655 ret = pm_ppm_searchlist(&psa);
2656 break;
2657
2658 default:
2659 /*
2660 * Internal error, invalid ioctl description
2661 * force debug entry even if pm_debug not set
2662 */
2663 #ifdef DEBUG
2664 pm_log("invalid diptype %d for cmd %d (%s)\n",
2665 pcip->diptype, cmd, pcip->name);
2666 #endif
2667 ASSERT(0);
2668 return (EIO);
2669 }
2670 break;
2671 }
2672
2673 case NOSTRUCT:
2674 {
2675 switch (cmd) {
2676 case PM_START_PM:
2677 case PM_START_CPUPM:
2678 case PM_START_CPUPM_EV:
2679 case PM_START_CPUPM_POLL:
2680 {
2681 pm_cpupm_t new_mode = PM_CPUPM_NOTSET;
2682 pm_cpupm_t old_mode = PM_CPUPM_NOTSET;
2683 int r;
2684
2685 mutex_enter(&pm_scan_lock);
2686 if ((cmd == PM_START_PM && autopm_enabled) ||
2687 (cmd == PM_START_CPUPM && PM_DEFAULT_CPUPM) ||
2688 (cmd == PM_START_CPUPM_EV && PM_EVENT_CPUPM) ||
2689 (cmd == PM_START_CPUPM_POLL && PM_POLLING_CPUPM)) {
2690 mutex_exit(&pm_scan_lock);
2691 PMD(PMD_ERROR, ("ioctl: %s: EBUSY\n", cmdstr))
2692 ret = EBUSY;
2693 break;
2694 }
2695
2696 if (cmd == PM_START_PM) {
2697 autopm_enabled = 1;
2698 } else if (cmd == PM_START_CPUPM) {
2699 old_mode = cpupm;
2700 new_mode = cpupm = cpupm_default_mode;
2701 } else if (cmd == PM_START_CPUPM_EV) {
2702 old_mode = cpupm;
2703 new_mode = cpupm = PM_CPUPM_EVENT;
2704 } else if (cmd == PM_START_CPUPM_POLL) {
2705 old_mode = cpupm;
2706 new_mode = cpupm = PM_CPUPM_POLLING;
2707 }
2708
2709 mutex_exit(&pm_scan_lock);
2710
2711 /*
2712 * If we are changing CPUPM modes, and it is active,
2713 * then stop it from operating in the old mode.
2714 */
2715 if (old_mode == PM_CPUPM_POLLING) {
2716 int c = PM_STOP_CPUPM;
2717 ddi_walk_devs(ddi_root_node(), pm_stop_pm_walk,
2718 &c);
2719 } else if (old_mode == PM_CPUPM_EVENT) {
2720 r = cpupm_set_policy(CPUPM_POLICY_DISABLED);
2721
2722 /*
2723 * Disabling CPUPM policy should always
2724 * succeed
2725 */
2726 ASSERT(r == 0);
2727 }
2728
2729 /*
2730 * If we are changing to event based CPUPM, enable it.
2731 * In the event it's not supported, fall back to
2732 * polling based CPUPM.
2733 */
2734 if (new_mode == PM_CPUPM_EVENT &&
2735 cpupm_set_policy(CPUPM_POLICY_ELASTIC) < 0) {
2736 mutex_enter(&pm_scan_lock);
2737 new_mode = cpupm = PM_CPUPM_POLLING;
2738 cmd = PM_START_CPUPM_POLL;
2739 mutex_exit(&pm_scan_lock);
2740 }
2741 if (new_mode == PM_CPUPM_POLLING ||
2742 cmd == PM_START_PM) {
2743 ddi_walk_devs(ddi_root_node(), pm_start_pm_walk,
2744 &cmd);
2745 }
2746 ret = 0;
2747 break;
2748 }
2749
2750 case PM_RESET_PM:
2751 case PM_STOP_PM:
2752 case PM_STOP_CPUPM:
2753 {
2754 extern void pm_discard_thresholds(void);
2755 pm_cpupm_t old_mode = PM_CPUPM_NOTSET;
2756
2757 mutex_enter(&pm_scan_lock);
2758 if ((cmd == PM_STOP_PM && !autopm_enabled) ||
2759 (cmd == PM_STOP_CPUPM && PM_CPUPM_DISABLED)) {
2760 mutex_exit(&pm_scan_lock);
2761 PMD(PMD_ERROR, ("ioctl: %s: EINVAL\n",
2762 cmdstr))
2763 ret = EINVAL;
2764 break;
2765 }
2766
2767 if (cmd == PM_STOP_PM) {
2768 autopm_enabled = 0;
2769 pm_S3_enabled = 0;
2770 autoS3_enabled = 0;
2771 } else if (cmd == PM_STOP_CPUPM) {
2772 old_mode = cpupm;
2773 cpupm = PM_CPUPM_DISABLE;
2774 } else {
2775 autopm_enabled = 0;
2776 autoS3_enabled = 0;
2777 old_mode = cpupm;
2778 cpupm = PM_CPUPM_NOTSET;
2779 }
2780 mutex_exit(&pm_scan_lock);
2781
2782 /*
2783 * bring devices to full power level, stop scan
2784 * If CPUPM was operating in event driven mode, disable
2785 * that.
2786 */
2787 if (old_mode == PM_CPUPM_EVENT) {
2788 (void) cpupm_set_policy(CPUPM_POLICY_DISABLED);
2789 }
2790 ddi_walk_devs(ddi_root_node(), pm_stop_pm_walk, &cmd);
2791 ret = 0;
2792 if (cmd == PM_STOP_PM || cmd == PM_STOP_CPUPM)
2793 break;
2794 /*
2795 * Now do only PM_RESET_PM stuff.
2796 */
2797 pm_system_idle_threshold = pm_default_idle_threshold;
2798 pm_cpu_idle_threshold = 0;
2799 pm_discard_thresholds();
2800 pm_all_to_default_thresholds();
2801 pm_dispatch_to_dep_thread(PM_DEP_WK_REMOVE_DEP,
2802 NULL, NULL, PM_DEP_WAIT, NULL, 0);
2803 break;
2804 }
2805
2806 case PM_GET_SYSTEM_THRESHOLD:
2807 {
2808 *rval_p = pm_system_idle_threshold;
2809 ret = 0;
2810 break;
2811 }
2812
2813 case PM_GET_DEFAULT_SYSTEM_THRESHOLD:
2814 {
2815 *rval_p = pm_default_idle_threshold;
2816 ret = 0;
2817 break;
2818 }
2819
2820 case PM_GET_CPU_THRESHOLD:
2821 {
2822 *rval_p = pm_cpu_idle_threshold;
2823 ret = 0;
2824 break;
2825 }
2826
2827 case PM_SET_SYSTEM_THRESHOLD:
2828 case PM_SET_CPU_THRESHOLD:
2829 {
2830 if ((int)arg < 0) {
2831 PMD(PMD_ERROR, ("ioctl: %s: arg 0x%x < 0"
2832 "--EINVAL\n", cmdstr, (int)arg))
2833 ret = EINVAL;
2834 break;
2835 }
2836 PMD(PMD_IOCTL, ("ioctl: %s: 0x%x 0t%d\n", cmdstr,
2837 (int)arg, (int)arg))
2838 if (cmd == PM_SET_SYSTEM_THRESHOLD)
2839 pm_system_idle_threshold = (int)arg;
2840 else {
2841 pm_cpu_idle_threshold = (int)arg;
2842 }
2843 ddi_walk_devs(ddi_root_node(), pm_set_idle_thresh_walk,
2844 (void *) &cmd);
2845
2846 ret = 0;
2847 break;
2848 }
2849
2850 case PM_IDLE_DOWN:
2851 {
2852 if (pm_timeout_idledown() != 0) {
2853 ddi_walk_devs(ddi_root_node(),
2854 pm_start_idledown, (void *)PMID_IOC);
2855 }
2856 ret = 0;
2857 break;
2858 }
2859
2860 case PM_GET_PM_STATE:
2861 {
2862 if (autopm_enabled) {
2863 *rval_p = PM_SYSTEM_PM_ENABLED;
2864 } else {
2865 *rval_p = PM_SYSTEM_PM_DISABLED;
2866 }
2867 ret = 0;
2868 break;
2869 }
2870
2871 case PM_GET_CPUPM_STATE:
2872 {
2873 if (PM_POLLING_CPUPM || PM_EVENT_CPUPM)
2874 *rval_p = PM_CPU_PM_ENABLED;
2875 else if (PM_CPUPM_DISABLED)
2876 *rval_p = PM_CPU_PM_DISABLED;
2877 else
2878 *rval_p = PM_CPU_PM_NOTSET;
2879 ret = 0;
2880 break;
2881 }
2882
2883 case PM_GET_AUTOS3_STATE:
2884 {
2885 if (autoS3_enabled) {
2886 *rval_p = PM_AUTOS3_ENABLED;
2887 } else {
2888 *rval_p = PM_AUTOS3_DISABLED;
2889 }
2890 ret = 0;
2891 break;
2892 }
2893
2894 case PM_GET_S3_SUPPORT_STATE:
2895 {
2896 if (pm_S3_enabled) {
2897 *rval_p = PM_S3_SUPPORT_ENABLED;
2898 } else {
2899 *rval_p = PM_S3_SUPPORT_DISABLED;
2900 }
2901 ret = 0;
2902 break;
2903 }
2904
2905 /*
2906 * pmconfig tells us if the platform supports S3
2907 */
2908 case PM_ENABLE_S3:
2909 {
2910 mutex_enter(&pm_scan_lock);
2911 if (pm_S3_enabled) {
2912 mutex_exit(&pm_scan_lock);
2913 PMD(PMD_ERROR, ("ioctl: %s: EBUSY\n",
2914 cmdstr))
2915 ret = EBUSY;
2916 break;
2917 }
2918 pm_S3_enabled = 1;
2919 mutex_exit(&pm_scan_lock);
2920 ret = 0;
2921 break;
2922 }
2923
2924 case PM_DISABLE_S3:
2925 {
2926 mutex_enter(&pm_scan_lock);
2927 pm_S3_enabled = 0;
2928 mutex_exit(&pm_scan_lock);
2929 ret = 0;
2930 break;
2931 }
2932
2933 case PM_START_AUTOS3:
2934 {
2935 mutex_enter(&pm_scan_lock);
2936 if (autoS3_enabled) {
2937 mutex_exit(&pm_scan_lock);
2938 PMD(PMD_ERROR, ("ioctl: %s: EBUSY\n",
2939 cmdstr))
2940 ret = EBUSY;
2941 break;
2942 }
2943 autoS3_enabled = 1;
2944 mutex_exit(&pm_scan_lock);
2945 ret = 0;
2946 break;
2947 }
2948
2949 case PM_STOP_AUTOS3:
2950 {
2951 mutex_enter(&pm_scan_lock);
2952 autoS3_enabled = 0;
2953 mutex_exit(&pm_scan_lock);
2954 ret = 0;
2955 break;
2956 }
2957
2958 case PM_ENABLE_CPU_DEEP_IDLE:
2959 {
2960 if (callb_execute_class(CB_CL_CPU_DEEP_IDLE,
2961 PM_ENABLE_CPU_DEEP_IDLE) == NULL)
2962 ret = 0;
2963 else
2964 ret = EBUSY;
2965 break;
2966 }
2967 case PM_DISABLE_CPU_DEEP_IDLE:
2968 {
2969 if (callb_execute_class(CB_CL_CPU_DEEP_IDLE,
2970 PM_DISABLE_CPU_DEEP_IDLE) == NULL)
2971 ret = 0;
2972 else
2973 ret = EINVAL;
2974 break;
2975 }
2976 case PM_DEFAULT_CPU_DEEP_IDLE:
2977 {
2978 if (callb_execute_class(CB_CL_CPU_DEEP_IDLE,
2979 PM_DEFAULT_CPU_DEEP_IDLE) == NULL)
2980 ret = 0;
2981 else
2982 ret = EBUSY;
2983 break;
2984 }
2985
2986 default:
2987 /*
2988 * Internal error, invalid ioctl description
2989 * force debug entry even if pm_debug not set
2990 */
2991 #ifdef DEBUG
2992 pm_log("invalid diptype %d for cmd %d (%s)\n",
2993 pcip->diptype, cmd, pcip->name);
2994 #endif
2995 ASSERT(0);
2996 return (EIO);
2997 }
2998 break;
2999 }
3000
3001 default:
3002 /*
3003 * Internal error, invalid ioctl description
3004 * force debug entry even if pm_debug not set
3005 */
3006 #ifdef DEBUG
3007 pm_log("ioctl: invalid str_type %d for cmd %d (%s)\n",
3008 pcip->str_type, cmd, pcip->name);
3009 #endif
3010 ASSERT(0);
3011 return (EIO);
3012 }
3013 ASSERT(ret != 0x0badcafe); /* some cmd in wrong case! */
3014 if (dipheld) {
3015 ASSERT(dip);
3016 PMD(PMD_DHR, ("ioctl: %s: releasing %s@%s(%s#%d) for "
3017 "exiting pm_ioctl\n", cmdstr, PM_DEVICE(dip)))
3018 PM_RELE(dip);
3019 }
3020 PMD(PMD_IOCTL, ("ioctl: %s: end, ret=%d\n", cmdstr, ret))
3021 return (ret);
3022 }
Unleashed OS