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 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26
27
28 /*
29 * generic character driver
30 */
31 #include <sys/types.h>
32 #include <sys/param.h>
33 #include <sys/errno.h>
34 #include <sys/uio.h>
35 #include <sys/buf.h>
36 #include <sys/modctl.h>
37 #include <sys/open.h>
38 #include <sys/kmem.h>
39 #include <sys/conf.h>
40 #include <sys/cmn_err.h>
41 #include <sys/stat.h>
42 #include <sys/ddi.h>
43 #include <sys/sunddi.h>
44 #include <sys/sunndi.h>
45
46
47 #define NUMEVENTS 6
48 #define COMPONENTS 2
49 #define COMP_0_MAXPWR 3
50 #define COMP_1_MAXPWR 2
51 #define MINPWR 0
52 static int maxpwr[] = { COMP_0_MAXPWR, COMP_1_MAXPWR };
53
54 /*
55 * The state for each generic device.
56 * NOTE: We save the node_type in the state structure. The node_type string
57 * (and not a copy) is stashed in a minor node by ddi_create_minor_node(),
58 * so ddi_remove_minor_node() must occur prior to state free.
59 */
60 typedef struct dstate {
61 uint_t flag;
62 dev_info_t *dip; /* my devinfo handle */
63 char *node_type; /* stable node_type copy */
64 ddi_callback_id_t gen_cb_ids[NUMEVENTS];
65 kmutex_t lock;
66 char *nodename;
67 int level[COMPONENTS]; /* pm level */
68 int busy[COMPONENTS]; /* busy state */
69 } dstate_t;
70
71
72 static void *dstates;
73
74 static int gen_debug = 0;
75
76 #ifdef DEBUG
77 #define gen_debug gen_debug_on
78 static int gen_debug_on = 0;
79 #define GEN_DEBUG(args) if (gen_debug) cmn_err args
80 #else
81 #define GEN_DEBUG(args)
82 #endif
83
84 extern void prom_printf(const char *fmt, ...);
85
86 static int gen_open(dev_t *devp, int flag, int otyp, cred_t *cred);
87 static int gen_close(dev_t devp, int flag, int otyp, cred_t *cred);
88 static int gen_read(dev_t dev, struct uio *uiop, cred_t *credp);
89 static int gen_write(dev_t dev, struct uio *uiop, cred_t *credp);
90 static int gen_ioctl(dev_t dev, int cmd, intptr_t arg, int mode,
91 cred_t *credp, int *rvalp);
92 static int gen_attach(dev_info_t *dip, ddi_attach_cmd_t cmd);
93 static int gen_detach(dev_info_t *dip, ddi_detach_cmd_t cmd);
94 static void gen_event_cb(dev_info_t *dip, ddi_eventcookie_t cookie,
95 void *arg, void *impl_data);
96
97 static int gen_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg,
98 void **result);
99 static int gen_create_minor_nodes(dev_info_t *, struct dstate *);
100 static int gen_power(dev_info_t *, int, int);
101
102 static struct cb_ops gen_cb_ops = {
103 gen_open, /* open */
104 gen_close, /* close */
105 nodev, /* strategy */
106 nodev, /* print */
107 nodev, /* dump */
108 gen_read, /* read */
109 gen_write, /* write */
110 gen_ioctl, /* ioctl */
111 nodev, /* devmap */
112 nodev, /* mmap */
113 nodev, /* segmap */
114 nochpoll, /* poll */
115 ddi_prop_op, /* prop_op */
116 NULL, /* streamtab */
117 D_NEW | D_MP | D_HOTPLUG, /* flag */
118 CB_REV, /* cb_rev */
119 nodev, /* aread */
120 nodev /* awrite */
121 };
122
123
124 static struct dev_ops gen_ops = {
125 DEVO_REV, /* devo_rev */
126 0, /* refcnt */
127 gen_info, /* getinfo */
128 nulldev, /* identify */
129 nulldev, /* probe */
130 gen_attach, /* attach */
131 gen_detach, /* detach */
132 nodev, /* reset */
133 &gen_cb_ops, /* driver ops */
134 (struct bus_ops *)0, /* bus ops */
135 gen_power, /* power */
136 ddi_quiesce_not_supported, /* devo_quiesce */
137 };
138
139 /*
140 * INST_TO_MINOR() gives the starting minor number for a given gen_drv driver
141 * instance. A shift left by 6 bits allows for each instance to have upto
142 * 64 (2^6) minor numbers. The maximum minor number allowed by the system
143 * is L_MAXMIN32 (0x3ffff). This effectively limits the gen_drv instance
144 * numbers from 0 to 0xfff for a total of 4096 instances.
145 */
146 #define INST_TO_MINOR(i) (i << 6)
147 #define MINOR_TO_INST(mn) (mn >> 6)
148
149 static char *mnodetypes[] = {
150 "ddi_nt",
151 "ddi_nt:device_type",
152 "ddi_nt:device_class:bus_class",
153 "ddi_nt2",
154 "ddi_nt2:device_type",
155 "ddi_nt2:device_type:bus_class",
156 };
157 #define N_NTYPES (sizeof (mnodetypes) / sizeof (char *))
158
159 static struct modldrv modldrv = {
160 &mod_driverops,
161 "generic test driver",
162 &gen_ops
163 };
164
165 static struct modlinkage modlinkage = {
166 MODREV_1, &modldrv, NULL
167 };
168
169
170 /*
171 * flags
172 */
173 #define OPEN_FLAG 0x001
174 #define PWR_HAS_CHANGED_ON_RESUME_FLAG 0x002
175 #define FAIL_SUSPEND_FLAG 0x004
176 #define PUP_WITH_PWR_HAS_CHANGED_FLAG 0x008
177 #define POWER_FLAG 0x010
178 #define LOWER_POWER_FLAG 0x020
179 #define NO_INVOL_FLAG 0x040
180 #define PM_SUPPORTED_FLAG 0x080
181
182 /*
183 * ioctl commands (non-devctl ioctl commands)
184 */
185 #define GENDRV_IOCTL ('P' << 8)
186 #define GENDRV_IOFAULT_SIMULATE (GENDRV_IOCTL | 0)
187 #define GENDRV_NDI_EVENT_TEST (GENDRV_IOCTL | 1)
188
189 int
_init(void)190 _init(void)
191 {
192 int e;
193
194 if ((e = ddi_soft_state_init(&dstates,
195 sizeof (struct dstate), 0)) != 0) {
196 return (e);
197 }
198
199 if ((e = mod_install(&modlinkage)) != 0) {
200 ddi_soft_state_fini(&dstates);
201 }
202
203 return (e);
204 }
205
206 int
_fini(void)207 _fini(void)
208 {
209 int e;
210
211 if ((e = mod_remove(&modlinkage)) != 0) {
212 return (e);
213 }
214 ddi_soft_state_fini(&dstates);
215 return (e);
216 }
217
218 int
_info(struct modinfo * modinfop)219 _info(struct modinfo *modinfop)
220 {
221 return (mod_info(&modlinkage, modinfop));
222 }
223
224 static int
gen_attach(dev_info_t * devi,ddi_attach_cmd_t cmd)225 gen_attach(dev_info_t *devi, ddi_attach_cmd_t cmd)
226 {
227 int instance = ddi_get_instance(devi);
228 struct dstate *dstatep;
229 int rval;
230 int n_devs;
231 int n_minorcomps;
232 int isclone;
233 ddi_eventcookie_t dev_offline_cookie, dev_reset_cookie;
234 ddi_eventcookie_t bus_reset_cookie, bus_quiesce_cookie;
235 ddi_eventcookie_t bus_unquiesce_cookie, bus_test_post_cookie;
236 int i_init = 0;
237 int level_tmp;
238
239 int i;
240 char *pm_comp[] = {
241 "NAME=leaf0",
242 "0=D0",
243 "1=D1",
244 "2=D2",
245 "3=D3",
246 "NAME=leaf1",
247 "0=off",
248 "1=blank",
249 "2=on"};
250 char *pm_hw_state = {"needs-suspend-resume"};
251
252
253 switch (cmd) {
254 case DDI_ATTACH:
255
256 if (ddi_soft_state_zalloc(dstates, instance) !=
257 DDI_SUCCESS) {
258 cmn_err(CE_CONT, "%s%d: can't allocate state\n",
259 ddi_get_name(devi), instance);
260
261 return (DDI_FAILURE);
262 }
263
264 dstatep = ddi_get_soft_state(dstates, instance);
265 dstatep->dip = devi;
266 mutex_init(&dstatep->lock, NULL, MUTEX_DRIVER, NULL);
267
268 n_devs = ddi_prop_get_int(DDI_DEV_T_ANY, devi, 0,
269 "ndevs", 1);
270
271 isclone = ddi_prop_get_int(DDI_DEV_T_ANY, devi, 0,
272 "isclone", 0);
273
274 n_minorcomps = ddi_prop_get_int(DDI_DEV_T_ANY, devi, 0,
275 "ncomps", 1);
276
277 GEN_DEBUG((CE_CONT,
278 "%s%d attaching: n_devs=%d n_minorcomps=%d isclone=%d",
279 ddi_get_name(devi), ddi_get_instance(devi),
280 n_devs, n_minorcomps, isclone));
281
282 if (isclone) {
283 if (ddi_create_minor_node(devi, "gen", S_IFCHR,
284 INST_TO_MINOR(instance), mnodetypes[0],
285 isclone) != DDI_SUCCESS) {
286 ddi_remove_minor_node(devi, NULL);
287 ddi_soft_state_free(dstates, instance);
288 cmn_err(CE_WARN, "%s%d: can't create minor "
289 "node", ddi_get_name(devi), instance);
290
291 return (DDI_FAILURE);
292 }
293 rval = DDI_SUCCESS;
294 } else {
295 rval = gen_create_minor_nodes(devi, dstatep);
296 if (rval != DDI_SUCCESS) {
297 ddi_prop_remove_all(devi);
298 ddi_remove_minor_node(devi, NULL);
299 ddi_soft_state_free(dstates, instance);
300 cmn_err(CE_WARN, "%s%d: can't create minor "
301 "nodes", ddi_get_name(devi), instance);
302
303 return (DDI_FAILURE);
304 }
305 }
306
307 if (ddi_get_eventcookie(devi, "pshot_dev_offline",
308 &dev_offline_cookie) == DDI_SUCCESS) {
309 (void) ddi_add_event_handler(devi, dev_offline_cookie,
310 gen_event_cb, NULL, &(dstatep->gen_cb_ids[0]));
311 }
312
313 if (ddi_get_eventcookie(devi, "pshot_dev_reset",
314 &dev_reset_cookie) == DDI_SUCCESS) {
315 (void) ddi_add_event_handler(devi, dev_reset_cookie,
316 gen_event_cb, NULL, &(dstatep->gen_cb_ids[1]));
317 }
318
319 if (ddi_get_eventcookie(devi, "pshot_bus_reset",
320 &bus_reset_cookie) == DDI_SUCCESS) {
321 (void) ddi_add_event_handler(devi, bus_reset_cookie,
322 gen_event_cb, NULL, &(dstatep->gen_cb_ids[2]));
323 }
324
325 if (ddi_get_eventcookie(devi, "pshot_bus_quiesce",
326 &bus_quiesce_cookie) == DDI_SUCCESS) {
327 (void) ddi_add_event_handler(devi, bus_quiesce_cookie,
328 gen_event_cb, NULL, &(dstatep->gen_cb_ids[3]));
329 }
330
331 if (ddi_get_eventcookie(devi, "pshot_bus_unquiesce",
332 &bus_unquiesce_cookie) == DDI_SUCCESS) {
333 (void) ddi_add_event_handler(devi,
334 bus_unquiesce_cookie, gen_event_cb,
335 NULL, &(dstatep->gen_cb_ids[4]));
336 }
337
338 if (ddi_get_eventcookie(devi, "pshot_bus_test_post",
339 &bus_test_post_cookie) == DDI_SUCCESS) {
340 (void) ddi_add_event_handler(devi,
341 bus_test_post_cookie, gen_event_cb,
342 NULL, &(dstatep->gen_cb_ids[5]));
343 }
344
345 /*
346 * initialize the devices' pm state
347 */
348 mutex_enter(&dstatep->lock);
349 dstatep->flag &= ~OPEN_FLAG;
350 dstatep->flag &= ~PWR_HAS_CHANGED_ON_RESUME_FLAG;
351 dstatep->flag &= ~FAIL_SUSPEND_FLAG;
352 dstatep->flag &= ~PUP_WITH_PWR_HAS_CHANGED_FLAG;
353 dstatep->flag |= LOWER_POWER_FLAG;
354 dstatep->flag &= ~NO_INVOL_FLAG;
355 dstatep->flag |= PM_SUPPORTED_FLAG;
356 dstatep->busy[0] = 0;
357 dstatep->busy[1] = 0;
358 dstatep->level[0] = -1;
359 dstatep->level[1] = -1;
360 mutex_exit(&dstatep->lock);
361
362 /*
363 * stash the nodename
364 */
365 dstatep->nodename = ddi_node_name(devi);
366
367 /*
368 * Check if the no-involuntary-power-cycles property
369 * was created. Set NO_INVOL_FLAG if so.
370 */
371 if (ddi_prop_exists(DDI_DEV_T_ANY, dstatep->dip,
372 (DDI_PROP_DONTPASS | DDI_PROP_NOTPROM),
373 "no-involuntary-power-cycles") == 1) {
374 GEN_DEBUG((CE_CONT,
375 "%s%d: DDI_ATTACH:\n\tno-involuntary-power-cycles"
376 " property was created",
377 ddi_node_name(devi), ddi_get_instance(devi)));
378 mutex_enter(&dstatep->lock);
379 dstatep->flag |= NO_INVOL_FLAG;
380 mutex_exit(&dstatep->lock);
381 }
382
383 /*
384 * Check if the dependency-property property
385 * was created.
386 */
387 if (ddi_prop_exists(DDI_DEV_T_ANY, dstatep->dip,
388 (DDI_PROP_DONTPASS | DDI_PROP_NOTPROM),
389 "dependency-property") == 1) {
390 GEN_DEBUG((CE_CONT,
391 "%s%d: DDI_ATTACH:\n\tdependency-property"
392 " property was created",
393 ddi_node_name(devi), ddi_get_instance(devi)));
394 }
395
396 /*
397 * create the pm-components property. two comps:
398 * 4 levels on comp0, 3 on comp 1.
399 * - skip for a "tape" device, clear PM_SUPPORTED_FLAG
400 */
401 if (strcmp(ddi_node_name(devi), "tape") != 0) {
402 if (ddi_prop_update_string_array(DDI_DEV_T_NONE, devi,
403 "pm-components", pm_comp, 9) != DDI_PROP_SUCCESS) {
404 cmn_err(CE_WARN, "%s%d: %s\n",
405 ddi_node_name(devi),
406 ddi_get_instance(devi),
407 "unable to create \"pm-components\" "
408 " property.");
409
410 return (DDI_FAILURE);
411 }
412 } else {
413 mutex_enter(&dstatep->lock);
414 dstatep->flag &= ~PM_SUPPORTED_FLAG;
415 mutex_exit(&dstatep->lock);
416 }
417
418 /*
419 * Check if the pm-components property was created
420 */
421 if (dstatep->flag & PM_SUPPORTED_FLAG) {
422 if (ddi_prop_exists(DDI_DEV_T_ANY, dstatep->dip,
423 (DDI_PROP_DONTPASS | DDI_PROP_NOTPROM),
424 "pm-components") != 1) {
425 cmn_err(CE_WARN, "%s%d: DDI_ATTACH:\n\t%s",
426 ddi_node_name(devi),
427 ddi_get_instance(devi),
428 "\"pm-components\" property does"
429 " not exist");
430
431 return (DDI_FAILURE);
432
433 } else {
434 GEN_DEBUG((CE_CONT, "%s%d: DDI_ATTACH:"
435 " created pm-components property",
436 ddi_node_name(devi),
437 ddi_get_instance(devi)));
438 }
439 }
440
441 /*
442 * create the pm-hardware-state property.
443 * needed to get DDI_SUSPEND and DDI_RESUME calls
444 */
445 if (ddi_prop_update_string(DDI_DEV_T_NONE, devi,
446 "pm-hardware-state", pm_hw_state) != DDI_PROP_SUCCESS) {
447 cmn_err(CE_WARN, "%s%d: DDI_ATTACH:\n\t%s\n",
448 ddi_node_name(devi), ddi_get_instance(devi),
449 "unable to create \"pm-hardware-state\" "
450 " property.");
451
452 return (DDI_FAILURE);
453 }
454
455 /*
456 * set power levels to max via pm_raise_power(),
457 */
458 mutex_enter(&dstatep->lock);
459 i_init = (dstatep->flag & PM_SUPPORTED_FLAG) ? 0 : COMPONENTS;
460 mutex_exit(&dstatep->lock);
461 for (i = i_init; i < COMPONENTS; i++) {
462 GEN_DEBUG((CE_CONT,
463 "%s%d: DDI_ATTACH: pm_raise_power comp %d "
464 "to level %d", ddi_node_name(devi),
465 ddi_get_instance(devi), i, maxpwr[i]));
466 if (pm_raise_power(dstatep->dip, i, maxpwr[i]) !=
467 DDI_SUCCESS) {
468 cmn_err(CE_WARN,
469 "%s%d: DDI_ATTACH: pm_raise_power failed\n",
470 ddi_node_name(devi),
471 ddi_get_instance(devi));
472 dstatep->level[i] = -1;
473
474 return (DDI_FAILURE);
475 }
476 }
477
478 if (rval == DDI_SUCCESS) {
479 ddi_report_dev(devi);
480 }
481 return (rval);
482
483
484 case DDI_RESUME:
485 GEN_DEBUG((CE_CONT, "%s%d: DDI_RESUME", ddi_node_name(devi),
486 ddi_get_instance(devi)));
487
488 dstatep = ddi_get_soft_state(dstates, ddi_get_instance(devi));
489 if (dstatep == NULL) {
490
491 return (DDI_FAILURE);
492 }
493
494 /*
495 * Call pm_power_has_changed() if flag
496 * PWR_HAS_CHANGED_ON_RESUME_FLAG is set,
497 * then clear the flag
498 */
499 mutex_enter(&dstatep->lock);
500 i_init = (dstatep->flag & PM_SUPPORTED_FLAG) ? 0 : COMPONENTS;
501 mutex_exit(&dstatep->lock);
502 if (dstatep->flag & PWR_HAS_CHANGED_ON_RESUME_FLAG) {
503 for (i = i_init; i < COMPONENTS; i++) {
504 GEN_DEBUG((CE_CONT,
505 "%s%d: DDI_RESUME: pm_power_has_changed "
506 "comp %d to level %d", ddi_node_name(devi),
507 ddi_get_instance(devi), i, maxpwr[i]));
508 mutex_enter(&dstatep->lock);
509 level_tmp = dstatep->level[i];
510 dstatep->level[i] = maxpwr[i];
511 if (pm_power_has_changed(dstatep->dip, i,
512 maxpwr[i]) != DDI_SUCCESS) {
513 cmn_err(CE_WARN,
514 "%s%d: DDI_RESUME:\n\t"
515 " pm_power_has_changed"
516 " failed: comp %d to level %d\n",
517 ddi_node_name(devi),
518 ddi_get_instance(devi),
519 i, maxpwr[i]);
520 dstatep->level[i] = level_tmp;
521 }
522 mutex_exit(&dstatep->lock);
523 }
524 } else {
525 /*
526 * Call pm_raise_power() instead
527 */
528 for (i = i_init; i < COMPONENTS; i++) {
529 GEN_DEBUG((CE_CONT,
530 "%s%d: DDI_RESUME: pm_raise_power"
531 " comp %d to level %d",
532 ddi_node_name(devi), ddi_get_instance(devi),
533 i, maxpwr[i]));
534 if (pm_raise_power(dstatep->dip, i, maxpwr[i])
535 != DDI_SUCCESS) {
536 cmn_err(CE_WARN,
537 "%s%d: DDI_RESUME:"
538 "\n\tpm_raise_power"
539 "failed: comp %d to level %d\n",
540 ddi_node_name(devi),
541 ddi_get_instance(devi),
542 i, maxpwr[i]);
543 }
544 }
545 }
546
547 return (DDI_SUCCESS);
548
549 default:
550 GEN_DEBUG((CE_WARN, "attach: default"));
551 return (DDI_FAILURE);
552 }
553 }
554
555 static int
gen_detach(dev_info_t * devi,ddi_detach_cmd_t cmd)556 gen_detach(dev_info_t *devi, ddi_detach_cmd_t cmd)
557 {
558 struct dstate *dstatep;
559 int instance;
560 int i;
561 int rv;
562 int rm_power;
563 int level_tmp;
564
565 #ifdef DEBUG
566 int n_devs;
567 int n_minorcomps;
568 int isclone;
569 #endif
570
571 switch (cmd) {
572 case DDI_DETACH:
573 GEN_DEBUG((CE_CONT, "%s%d: DDI_DETACH", ddi_node_name(devi),
574 ddi_get_instance(devi)));
575
576 instance = ddi_get_instance(devi);
577 dstatep = ddi_get_soft_state(dstates, instance);
578 if (dstatep == NULL) {
579
580 return (DDI_FAILURE);
581 }
582
583 #ifdef DEBUG
584 n_devs = ddi_prop_get_int(DDI_DEV_T_ANY, devi, 0,
585 "ndevs", 1);
586
587 isclone = ddi_prop_get_int(DDI_DEV_T_ANY, devi, 0,
588 "isclone", 0);
589
590 n_minorcomps = ddi_prop_get_int(DDI_DEV_T_ANY, devi, 0,
591 "ncomps", 1);
592 #endif /* DEBUG */
593
594 /*
595 * power off component 1.
596 */
597 if (dstatep->flag & PM_SUPPORTED_FLAG) {
598 GEN_DEBUG((CE_CONT,
599 "%s%d: DDI_DETACH: pm_lower_power comp 1 level %d",
600 ddi_node_name(devi), ddi_get_instance(devi),
601 MINPWR));
602 if (pm_lower_power(dstatep->dip, 1, MINPWR)
603 != DDI_SUCCESS) {
604 cmn_err(CE_WARN, "%s%d: DDI_DETACH:\n\t"
605 "pm_lower_power failed for comp 1 to"
606 " level %d\n", ddi_node_name(devi),
607 ddi_get_instance(devi), MINPWR);
608
609 return (DDI_FAILURE);
610 }
611
612 /*
613 * check power level. Issue pm_power_has_changed
614 * if not at MINPWR.
615 */
616 mutex_enter(&dstatep->lock);
617 level_tmp = dstatep->level[1];
618 dstatep->level[1] = MINPWR;
619 if (dstatep->level[1] != MINPWR) {
620 GEN_DEBUG((CE_NOTE, "%s%d: DDI_DETACH:"
621 " power off via pm_power_has_changed"
622 " instead", ddi_node_name(devi),
623 ddi_get_instance(devi)));
624 if (pm_power_has_changed(dstatep->dip,
625 1, MINPWR) != DDI_SUCCESS) {
626 GEN_DEBUG((CE_NOTE, "%s%d: DDI_DETACH:"
627 " pm_power_has_changed failed for"
628 " comp 1 to level %d",
629 ddi_node_name(devi),
630 ddi_get_instance(devi),
631 MINPWR));
632 dstatep->level[1] = level_tmp;
633 mutex_exit(&dstatep->lock);
634
635 return (DDI_FAILURE);
636 }
637 }
638 mutex_exit(&dstatep->lock);
639 }
640
641 /*
642 * If the LOWER_POWER_FLAG flag is not set,
643 * don't call pm_lowr_power() for comp 0.
644 * This should be used only for the XXXXX@XX,no_invol
645 * devices that export the
646 * no-involuntary-power-cycles property
647 */
648 if (!(dstatep->flag & LOWER_POWER_FLAG) &&
649 dstatep->flag & PM_SUPPORTED_FLAG) {
650 cmn_err(CE_NOTE, "%s%d: DDI_DETACH:\n\t"
651 " NOT CALLING PM_LOWER_POWER():"
652 " LOWER_POWER_FLAG NOT SET\n",
653 ddi_node_name(devi), ddi_get_instance(devi));
654 } else if (dstatep->flag & PM_SUPPORTED_FLAG) {
655 GEN_DEBUG((CE_CONT,
656 "%s%d: DDI_DETACH: pm_lower_power comp 0 level %d",
657 ddi_node_name(devi), ddi_get_instance(devi),
658 MINPWR));
659 if (pm_lower_power(dstatep->dip, 0, MINPWR)
660 != DDI_SUCCESS) {
661 cmn_err(CE_WARN, "%s%d: DDI_DETACH:\n\t"
662 "pm_lower_power failed for comp 0 to"
663 " level %d\n", ddi_node_name(devi),
664 ddi_get_instance(devi), MINPWR);
665
666 return (DDI_FAILURE);
667 }
668
669 /*
670 * check power level. Issue pm_power_has_changed
671 * if not at MINPWR.
672 */
673 mutex_enter(&dstatep->lock);
674 level_tmp = dstatep->level[0];
675 dstatep->level[0] = MINPWR;
676 if (dstatep->level[0] != MINPWR) {
677 GEN_DEBUG((CE_NOTE, "%s%d: DDI_DETACH:"
678 " power off via pm_power_has_changed"
679 " instead", ddi_node_name(devi),
680 ddi_get_instance(devi)));
681 if (pm_power_has_changed(dstatep->dip,
682 0, MINPWR) != DDI_SUCCESS) {
683 GEN_DEBUG((CE_NOTE, "%s%d: DDI_DETACH:"
684 " pm_power_has_changed failed for"
685 " comp 0 to level %d",
686 ddi_node_name(devi),
687 ddi_get_instance(devi),
688 MINPWR));
689 dstatep->level[0] = level_tmp;
690 mutex_exit(&dstatep->lock);
691
692 return (DDI_FAILURE);
693 }
694 }
695 mutex_exit(&dstatep->lock);
696 }
697
698 GEN_DEBUG((CE_CONT,
699 "%s%d detaching: n_devs=%d n_minorcomps=%d isclone=%d",
700 ddi_node_name(devi), ddi_get_instance(devi),
701 n_devs, n_minorcomps, isclone));
702
703 for (i = 0; i < NUMEVENTS; i++) {
704 if (dstatep->gen_cb_ids[i]) {
705 (void) ddi_remove_event_handler(dstatep->gen_cb_ids[i]);
706 dstatep->gen_cb_ids[i] = NULL;
707 }
708 }
709
710 ddi_prop_remove_all(devi);
711 ddi_remove_minor_node(devi, NULL);
712 if (dstatep->node_type)
713 kmem_free(dstatep->node_type,
714 strlen(dstatep->node_type) + 1);
715 ddi_soft_state_free(dstates, instance);
716 return (DDI_SUCCESS);
717
718 case DDI_SUSPEND:
719 GEN_DEBUG((CE_CONT, "%s%d: DDI_SUSPEND",
720 ddi_node_name(devi), ddi_get_instance(devi)));
721
722 instance = ddi_get_instance(devi);
723 dstatep = ddi_get_soft_state(dstates, instance);
724 if (dstatep == NULL) {
725
726 return (DDI_FAILURE);
727 }
728
729 /*
730 * fail the suspend if FAIL_SUSPEND_FLAG is set.
731 * clear the FAIL_SUSPEND_FLAG flag
732 */
733 mutex_enter(&dstatep->lock);
734 if (dstatep->flag & FAIL_SUSPEND_FLAG) {
735 GEN_DEBUG((CE_CONT, "%s%d: DDI_SUSPEND:"
736 " FAIL_SUSPEND_FLAG is set,"
737 " fail suspend",
738 ddi_node_name(devi), ddi_get_instance(devi)));
739 dstatep->flag &= ~FAIL_SUSPEND_FLAG;
740 rv = DDI_FAILURE;
741 } else {
742 rv = DDI_SUCCESS;
743 }
744 mutex_exit(&dstatep->lock);
745
746 /*
747 * Issue ddi_removing_power() to determine if the suspend
748 * was initiated by either CPR or DR. If CPR, the system
749 * will be powered OFF; if this driver has set the
750 * NO_INVOL_FLAG, then refuse to suspend. If DR, power
751 * will not be removed, thus allow the suspend.
752 */
753 if (dstatep->flag & NO_INVOL_FLAG &&
754 dstatep->flag & PM_SUPPORTED_FLAG) {
755 GEN_DEBUG((CE_CONT, "%s%d: DDI_SUSPEND:"
756 " check via ddi_removing_power()",
757 ddi_node_name(devi), ddi_get_instance(devi)));
758
759 rm_power = ddi_removing_power(dstatep->dip);
760
761 if (rm_power < 0) {
762 cmn_err(CE_WARN, "%s%d: DDI_SUSPEND:"
763 " ddi_removing_power() failed\n",
764 ddi_node_name(devi),
765 ddi_get_instance(devi));
766 } else if (rm_power == 1) {
767 /*
768 * CPR: power will be removed
769 */
770 GEN_DEBUG((CE_CONT, "%s%d: DDI_SUSPEND:\n\t"
771 " CPR: POWER WILL BE REMOVED, THEREFORE"
772 " REFUSE TO SUSPEND", ddi_node_name(devi),
773 ddi_get_instance(devi)));
774 rv = DDI_FAILURE;
775 } else if (rm_power == 0) {
776 /*
777 * DR: power will not be removed
778 */
779 GEN_DEBUG((CE_CONT, "%s%d: DDI_SUSPEND:\n\t"
780 " DR: POWER WILL NOT BE REMOVED, THEREFORE"
781 " ALLOW THE SUSPEND", ddi_node_name(devi),
782 ddi_get_instance(devi)));
783 rv = DDI_SUCCESS;
784 }
785 }
786
787 /*
788 * power OFF via pm_power_has_changed()
789 */
790 mutex_enter(&dstatep->lock);
791 if (dstatep->flag & PM_SUPPORTED_FLAG &&
792 !(dstatep->flag & NO_INVOL_FLAG)) {
793 level_tmp = dstatep->level[0];
794 dstatep->level[0] = MINPWR;
795 GEN_DEBUG((CE_CONT,
796 "%s%d: DDI_SUSPEND: pm_power_has_changed comp 0"
797 " level %d", ddi_node_name(devi),
798 ddi_get_instance(devi), MINPWR));
799 if (pm_power_has_changed(dstatep->dip, 0, MINPWR)
800 != DDI_SUCCESS) {
801 cmn_err(CE_WARN, "%s%d: DDI_SUSPEND:\n\t"
802 "pm_power_has_changed failed for comp 0 to"
803 " level %d\n", ddi_node_name(devi),
804 ddi_get_instance(devi), MINPWR);
805 dstatep->level[0] = level_tmp;
806 mutex_exit(&dstatep->lock);
807
808 return (DDI_FAILURE);
809 }
810 }
811 mutex_exit(&dstatep->lock);
812
813 return (rv);
814
815 default:
816
817 return (DDI_FAILURE);
818 }
819 }
820
821 /* ARGSUSED */
822 static int
gen_info(dev_info_t * dip,ddi_info_cmd_t infocmd,void * arg,void ** result)823 gen_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
824 {
825 dev_t dev;
826 int instance;
827
828 if (infocmd != DDI_INFO_DEVT2INSTANCE)
829 return (DDI_FAILURE);
830
831 dev = (dev_t)arg;
832 instance = MINOR_TO_INST(getminor(dev));
833 *result = (void *)(uintptr_t)instance;
834 return (DDI_SUCCESS);
835 }
836
837
838 /*ARGSUSED*/
839 static int
gen_open(dev_t * devp,int flag,int otyp,cred_t * cred)840 gen_open(dev_t *devp, int flag, int otyp, cred_t *cred)
841 {
842 minor_t minor;
843 struct dstate *dstatep;
844
845 if (otyp != OTYP_BLK && otyp != OTYP_CHR)
846 return (EINVAL);
847
848 minor = getminor(*devp);
849 if ((dstatep = ddi_get_soft_state(dstates,
850 MINOR_TO_INST(minor))) == NULL)
851 return (ENXIO);
852
853 mutex_enter(&dstatep->lock);
854 dstatep->flag |= OPEN_FLAG;
855 mutex_exit(&dstatep->lock);
856
857 GEN_DEBUG((CE_CONT,
858 "%s%d open",
859 dstatep->nodename, MINOR_TO_INST(minor)));
860
861 return (0);
862 }
863
864 /*ARGSUSED*/
865 static int
gen_close(dev_t dev,int flag,int otyp,cred_t * cred)866 gen_close(dev_t dev, int flag, int otyp, cred_t *cred)
867 {
868 struct dstate *dstatep;
869 minor_t minor = getminor(dev);
870
871 if (otyp != OTYP_BLK && otyp != OTYP_CHR)
872 return (EINVAL);
873
874 dstatep = ddi_get_soft_state(dstates, MINOR_TO_INST(minor));
875
876 if (dstatep == NULL)
877 return (ENXIO);
878
879 mutex_enter(&dstatep->lock);
880 dstatep->flag &= ~OPEN_FLAG;
881 mutex_exit(&dstatep->lock);
882
883 GEN_DEBUG((CE_CONT,
884 "%s%d close",
885 dstatep->nodename, MINOR_TO_INST(minor)));
886
887 return (0);
888 }
889
890 /*ARGSUSED*/
891 static int
gen_ioctl(dev_t dev,int cmd,intptr_t arg,int mode,cred_t * credp,int * rvalp)892 gen_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, int *rvalp)
893 {
894 struct dstate *dstatep;
895 ddi_eventcookie_t cookie;
896 int instance;
897 int rval = 0;
898 char *nodename;
899 int i;
900 struct devctl_iocdata *dcp;
901 uint_t state;
902 int ret;
903 int level_tmp;
904
905 instance = MINOR_TO_INST(getminor(dev));
906 dstatep = ddi_get_soft_state(dstates, instance);
907 nodename = dstatep->nodename;
908
909 if (dstatep == NULL)
910 return (ENXIO);
911
912 /*
913 * read devctl ioctl data
914 */
915 if (ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS)
916 return (EFAULT);
917
918 switch (cmd) {
919 case GENDRV_IOFAULT_SIMULATE:
920 if (ddi_get_eventcookie(dstatep->dip, DDI_DEVI_FAULT_EVENT,
921 &(cookie)) != NDI_SUCCESS)
922 return (DDI_FAILURE);
923
924 return (ndi_post_event(dstatep->dip, dstatep->dip, cookie,
925 NULL));
926
927 case GENDRV_NDI_EVENT_TEST:
928 if (ddi_get_eventcookie(dstatep->dip, "pshot_dev_offline",
929 &cookie) == NDI_SUCCESS) {
930 (void) ndi_post_event(dstatep->dip, dstatep->dip,
931 cookie, NULL);
932 }
933
934 if (ddi_get_eventcookie(dstatep->dip, "pshot_dev_reset",
935 &cookie) == NDI_SUCCESS) {
936 (void) ndi_post_event(dstatep->dip, dstatep->dip,
937 cookie, NULL);
938 }
939
940 if (ddi_get_eventcookie(dstatep->dip, "pshot_bus_reset",
941 &cookie) == NDI_SUCCESS) {
942 (void) ndi_post_event(dstatep->dip, dstatep->dip,
943 cookie, NULL);
944 }
945
946 if (ddi_get_eventcookie(dstatep->dip, "pshot_bus_quiesce",
947 &cookie) == NDI_SUCCESS) {
948 (void) ndi_post_event(dstatep->dip, dstatep->dip,
949 cookie, NULL);
950 }
951
952 if (ddi_get_eventcookie(dstatep->dip, "pshot_bus_unquiesce",
953 &cookie) == NDI_SUCCESS) {
954 (void) ndi_post_event(dstatep->dip, dstatep->dip,
955 cookie, NULL);
956 }
957
958 if (ddi_get_eventcookie(dstatep->dip, "pshot_bus_test_post",
959 &cookie) == NDI_SUCCESS) {
960 (void) ndi_post_event(dstatep->dip, dstatep->dip,
961 cookie, NULL);
962 }
963
964 break;
965
966 case DEVCTL_PM_PWR_HAS_CHANGED_ON_RESUME:
967 /*
968 * Issue pm_power_has_changed() call on DDI_RESUME
969 */
970 mutex_enter(&dstatep->lock);
971 dstatep->flag |= PWR_HAS_CHANGED_ON_RESUME_FLAG;
972 mutex_exit(&dstatep->lock);
973 GEN_DEBUG((CE_CONT, "%s%d:"
974 " DEVCTL_PM_PWR_HAS_CHANGED_ON_RESUME", nodename,
975 instance));
976
977 break;
978
979 case DEVCTL_PM_FAIL_SUSPEND:
980 /*
981 * Fail the suspend attempt in DDI_SUSPEND
982 */
983 mutex_enter(&dstatep->lock);
984 dstatep->flag |= FAIL_SUSPEND_FLAG;
985 mutex_exit(&dstatep->lock);
986 GEN_DEBUG((CE_CONT, "%s%d: DEVCTL_PM_FAIL_SUSPEND",
987 nodename, instance));
988
989 break;
990
991 case DEVCTL_PM_PUP_WITH_PWR_HAS_CHANGED:
992 /*
993 * Use pm_power_has_changed() to power up comp 0 when
994 * enforcing the comp 0 vs comp-not 0 dependency:
995 * Power up comp 0 first, if request for comp-not-0
996 * comes in.
997 * Else, default to pm_raise_power().
998 */
999 mutex_enter(&dstatep->lock);
1000 dstatep->flag |= PUP_WITH_PWR_HAS_CHANGED_FLAG;
1001 mutex_exit(&dstatep->lock);
1002 GEN_DEBUG((CE_CONT, "%s%d: DEVCTL_PM_PUP_WITH_PWR_HAS_CHANGED",
1003 nodename, instance));
1004
1005 break;
1006
1007 case DEVCTL_PM_BUSY_COMP:
1008 /*
1009 * mark component 0 busy via a pm_busy_component() call.
1010 * update the busy[] array.
1011 */
1012 mutex_enter(&dstatep->lock);
1013 ++dstatep->busy[0];
1014 GEN_DEBUG((CE_CONT, "%s%d: DEVCTL_PM_BUSY_COMP: comp 0:"
1015 " busy=%d", nodename, instance, dstatep->busy[0]));
1016 mutex_exit(&dstatep->lock);
1017 ret = pm_busy_component(dstatep->dip, 0);
1018 ASSERT(ret == DDI_SUCCESS);
1019
1020 break;
1021
1022 case DEVCTL_PM_BUSY_COMP_TEST:
1023 /*
1024 * test busy state on component 0
1025 */
1026 mutex_enter(&dstatep->lock);
1027 state = dstatep->busy[0];
1028 if (copyout(&state, dcp->cpyout_buf,
1029 sizeof (uint_t)) != 0) {
1030 cmn_err(CE_WARN, "%s%d:"
1031 " DEVCTL_PM_BUSY_COMP_TEST: copyout failed\n",
1032 nodename, instance);
1033 rval = EINVAL;
1034 }
1035 GEN_DEBUG((CE_CONT, "%s%d: DEVCTL_PM_BUSY_COMP_TEST:"
1036 " comp 0 busy %d",
1037 nodename, instance, state));
1038 mutex_exit(&dstatep->lock);
1039
1040 break;
1041
1042 case DEVCTL_PM_IDLE_COMP:
1043 /*
1044 * mark component 0 idle via a pm_idle_component() call.
1045 * NOP if dstatep->busy[0] == 0.
1046 */
1047 mutex_enter(&dstatep->lock);
1048 if (dstatep->busy[0] > 0) {
1049 --dstatep->busy[0];
1050 GEN_DEBUG((CE_CONT, "%s%d: DEVCTL_PM_IDLE_COMP:"
1051 " comp 0: busy=%d", nodename, instance,
1052 dstatep->busy[0]));
1053 mutex_exit(&dstatep->lock);
1054 ret = pm_idle_component(dstatep->dip, 0);
1055 ASSERT(ret == DDI_SUCCESS);
1056 } else {
1057 mutex_exit(&dstatep->lock);
1058 }
1059
1060 break;
1061
1062 case DEVCTL_PM_PROM_PRINTF:
1063 (void) prom_printf("%s%d: PROM_PRINTF FROM GEN_DRV\n",
1064 nodename, instance);
1065
1066 break;
1067
1068 case DEVCTL_PM_RAISE_PWR:
1069 /*
1070 * power up both components to MAXPWR via
1071 * pm_raise_power() calls. this ioctl() cmd
1072 * assumes that the current level is 0
1073 */
1074 for (i = 0; i < COMPONENTS; i++) {
1075 GEN_DEBUG((CE_CONT, "%s%d: DEVCTL_PM_RAISE_PWR:"
1076 " comp %d old 0 new %d",
1077 nodename, instance, i, maxpwr[i]));
1078 if (pm_raise_power(dstatep->dip, 0, maxpwr[i])
1079 != DDI_SUCCESS) {
1080 rval = EINVAL;
1081 }
1082 }
1083
1084 break;
1085
1086 case DEVCTL_PM_CHANGE_PWR_LOW:
1087 /*
1088 * power off both components via pm_power_has_changed() calls
1089 */
1090 for (i = (COMPONENTS - 1); i >= 0; --i) {
1091 GEN_DEBUG((CE_CONT, "%s%d: DEVCTL_PM_CHANGE_PWR_LOW:"
1092 " comp %d new 0",
1093 nodename, instance, i));
1094 mutex_enter(&dstatep->lock);
1095 level_tmp = dstatep->level[i];
1096 dstatep->level[i] = 0;
1097 if (pm_power_has_changed(dstatep->dip, i, 0)
1098 != DDI_SUCCESS) {
1099 dstatep->level[i] = level_tmp;
1100 rval = EINVAL;
1101 }
1102 mutex_exit(&dstatep->lock);
1103 }
1104
1105 break;
1106
1107 case DEVCTL_PM_CHANGE_PWR_HIGH:
1108 /*
1109 * power up both components to MAXPWR via
1110 * pm_power_has_changed() calls
1111 */
1112 for (i = 0; i < COMPONENTS; i++) {
1113 GEN_DEBUG((CE_CONT, "%s%d: DEVCTL_PM_CHANGE_PWR_HIGH:"
1114 " comp %d new %d",
1115 nodename, instance, i, maxpwr[i]));
1116 mutex_enter(&dstatep->lock);
1117 level_tmp = dstatep->level[i];
1118 dstatep->level[i] = maxpwr[i];
1119 if (pm_power_has_changed(dstatep->dip, i, maxpwr[i])
1120 != DDI_SUCCESS) {
1121 dstatep->level[i] = level_tmp;
1122 rval = EINVAL;
1123 }
1124 mutex_exit(&dstatep->lock);
1125 }
1126
1127 break;
1128
1129 case DEVCTL_PM_POWER:
1130 /*
1131 * test if the gen_drv_power() routine has been called,
1132 * then clear
1133 */
1134 mutex_enter(&dstatep->lock);
1135 state = (dstatep->flag & POWER_FLAG) ? 1 : 0;
1136 if (copyout(&state, dcp->cpyout_buf,
1137 sizeof (uint_t)) != 0) {
1138 cmn_err(CE_WARN, "%s%d: DEVCTL_PM_POWER:"
1139 " copyout failed\n", nodename, instance);
1140 rval = EINVAL;
1141 }
1142 GEN_DEBUG((CE_CONT, "%s%d: %s POWER_FLAG: %d",
1143 nodename, instance, "DEVCTL_PM_POWER", state));
1144 dstatep->flag &= ~POWER_FLAG;
1145 mutex_exit(&dstatep->lock);
1146 break;
1147
1148 case DEVCTL_PM_NO_LOWER_POWER:
1149 /*
1150 * issue to not invoke pm_lower_power() on detach
1151 */
1152 mutex_enter(&dstatep->lock);
1153 dstatep->flag &= ~LOWER_POWER_FLAG;
1154 mutex_exit(&dstatep->lock);
1155 GEN_DEBUG((CE_CONT, "%s%d: DEVCTL_PM_NO_LOWER_POWER",
1156 nodename, instance));
1157 break;
1158
1159 default:
1160 return (ENOTTY);
1161 }
1162
1163 return (rval);
1164 }
1165
1166 /*ARGSUSED*/
1167 static int
gen_read(dev_t dev,struct uio * uiop,cred_t * credp)1168 gen_read(dev_t dev, struct uio *uiop, cred_t *credp)
1169 {
1170 return (0);
1171 }
1172
1173 /*ARGSUSED*/
1174 static int
gen_write(dev_t dev,struct uio * uiop,cred_t * credp)1175 gen_write(dev_t dev, struct uio *uiop, cred_t *credp)
1176 {
1177 return (0);
1178 }
1179
1180 /*ARGSUSED0*/
1181 static int
gen_power(dev_info_t * dip,int cmpt,int level)1182 gen_power(dev_info_t *dip, int cmpt, int level)
1183 {
1184 struct dstate *dstatep;
1185 int instance = ddi_get_instance(dip);
1186 char *nodename = ddi_node_name(dip);
1187 int level_tmp;
1188
1189 GEN_DEBUG((CE_CONT, "%s%d: power: cmpt %d to level %d",
1190 nodename, instance, cmpt, level));
1191
1192 dstatep = ddi_get_soft_state(dstates, instance);
1193 if (dstatep == NULL) {
1194
1195 return (DDI_FAILURE);
1196 }
1197
1198 /*
1199 * Keep track of the power levels for both components
1200 * in the dstatep->comp[] array.
1201 * Set comp 0 to full level if non-zero comps
1202 * are being set to a higher, non-zero level.
1203 */
1204 if (cmpt == 0) {
1205 mutex_enter(&dstatep->lock);
1206 dstatep->level[cmpt] = level;
1207 mutex_exit(&dstatep->lock);
1208 } else if (level > dstatep->level[cmpt] && level != 0 &&
1209 dstatep->level[0] != COMP_0_MAXPWR) {
1210 /*
1211 * If component 0 is not at COMP_0_MAXPWR, and component 1
1212 * is being powered ON, invoke pm_raise_power() or
1213 * pm_power_has_changed() based on the
1214 * PUP_WITH_PWR_HAS_CHANGED_FLAG flag.
1215 * PUP_WITH_PWR_HAS_CHANGED_FLAG = FALSE by default, invoking
1216 * pm_raise_power().
1217 */
1218 if (!(dstatep->flag & PUP_WITH_PWR_HAS_CHANGED_FLAG)) {
1219 /*
1220 * first set comp 0 to level COMP_0_MAXPWR
1221 */
1222 GEN_DEBUG((CE_CONT, "%s%d: power: "
1223 "pm_raise_power: comp 0 to level %d",
1224 nodename, instance, COMP_0_MAXPWR));
1225 if (pm_raise_power(dip, 0, COMP_0_MAXPWR) !=
1226 DDI_SUCCESS) {
1227 cmn_err(CE_WARN,
1228 "%s%d: power: pm_raise_power() "
1229 "failed: comp 0 to level %d\n",
1230 nodename, instance, COMP_0_MAXPWR);
1231
1232 return (DDI_FAILURE);
1233
1234 } else {
1235 mutex_enter(&dstatep->lock);
1236 dstatep->level[0] = COMP_0_MAXPWR;
1237 /*
1238 * now set the level on the non-zero comp
1239 */
1240 dstatep->level[cmpt] = level;
1241 mutex_exit(&dstatep->lock);
1242 GEN_DEBUG((CE_CONT, "%s%d: power: "
1243 "comp %d to level %d",
1244 nodename, instance, cmpt, level));
1245 }
1246 } else {
1247 GEN_DEBUG((CE_CONT, "%s%d: power: "
1248 "pm_power_has_changed: comp 0 to level %d",
1249 nodename, instance, COMP_0_MAXPWR));
1250 mutex_enter(&dstatep->lock);
1251 level_tmp = dstatep->level[0];
1252 dstatep->level[0] = COMP_0_MAXPWR;
1253 if (pm_power_has_changed(dip, 0, COMP_0_MAXPWR) !=
1254 DDI_SUCCESS) {
1255 cmn_err(CE_WARN,
1256 "%s%d: power: pm_power_has_changed() "
1257 "failed: comp 0 to level %d\n",
1258 nodename, instance, COMP_0_MAXPWR);
1259 dstatep->level[0] = level_tmp;
1260 } else {
1261 /*
1262 * now set the level on the non-zero comp
1263 */
1264 GEN_DEBUG((CE_CONT, "%s%d: power:"
1265 " pm_power_has_changed: comp %d"
1266 " to level %d", nodename, instance,
1267 cmpt, level));
1268 dstatep->level[cmpt] = level;
1269 }
1270 mutex_exit(&dstatep->lock);
1271 }
1272 } else {
1273 mutex_enter(&dstatep->lock);
1274 dstatep->level[cmpt] = level;
1275 mutex_exit(&dstatep->lock);
1276 }
1277
1278 return (DDI_SUCCESS);
1279 }
1280
1281
1282 /*
1283 * Create properties of various data types for testing devfs events.
1284 */
1285 static int
gen_create_properties(dev_info_t * devi)1286 gen_create_properties(dev_info_t *devi)
1287 {
1288 int int_val = 3023;
1289 int int_array[] = { 3, 10, 304, 230, 4};
1290 int64_t int64_val = 20;
1291 int64_t int64_array[] = { 12, 24, 36, 48};
1292 char *string_val = "Dev_node_prop";
1293 char *string_array[] = {"Dev_node_prop:0",
1294 "Dev_node_prop:1", "Dev_node_prop:2", "Dev_node_prop:3"};
1295 uchar_t byte_array[] = { (uchar_t)0xaa, (uchar_t)0x55,
1296 (uchar_t)0x12, (uchar_t)0xcd };
1297 char bytes[] = { (char)0x00, (char)0xef, (char)0xff };
1298
1299 if (ddi_prop_update_int(DDI_DEV_T_NONE, devi, "int", int_val)
1300 != DDI_PROP_SUCCESS)
1301 return (DDI_FAILURE);
1302
1303 if (ddi_prop_update_int_array(DDI_DEV_T_NONE, devi, "int-array",
1304 int_array, sizeof (int_array) / sizeof (int)) != DDI_PROP_SUCCESS)
1305 return (DDI_FAILURE);
1306
1307 if (ddi_prop_update_int64(DDI_DEV_T_NONE, devi, "int64", int64_val)
1308 != DDI_PROP_SUCCESS)
1309 return (DDI_FAILURE);
1310
1311 if (ddi_prop_update_int64_array(DDI_DEV_T_NONE, devi, "int64-array",
1312 int64_array, sizeof (int64_array) / sizeof (int64_t))
1313 != DDI_PROP_SUCCESS)
1314 return (DDI_FAILURE);
1315
1316 if (ddi_prop_update_string(DDI_DEV_T_NONE, devi, "string", string_val)
1317 != DDI_PROP_SUCCESS)
1318 return (DDI_FAILURE);
1319
1320 if (ddi_prop_update_string_array(DDI_DEV_T_NONE, devi, "string-array",
1321 string_array, sizeof (string_array) / sizeof (char *))
1322 != DDI_PROP_SUCCESS)
1323 return (DDI_FAILURE);
1324
1325 if (ddi_prop_create(DDI_DEV_T_NONE, devi, DDI_PROP_CANSLEEP,
1326 "boolean", NULL, 0) != DDI_PROP_SUCCESS)
1327 return (DDI_FAILURE);
1328
1329 if (ddi_prop_update_byte_array(DDI_DEV_T_NONE, devi, "byte-array",
1330 byte_array, sizeof (byte_array)) != DDI_PROP_SUCCESS)
1331 return (DDI_FAILURE);
1332
1333 /* untyped property */
1334 if (ddi_prop_create(DDI_DEV_T_NONE, devi, DDI_PROP_CANSLEEP, "untyped",
1335 (caddr_t)bytes, sizeof (bytes)) != DDI_PROP_SUCCESS)
1336 return (DDI_FAILURE);
1337
1338 return (DDI_SUCCESS);
1339 }
1340
1341 static struct driver_minor_data {
1342 char *name;
1343 minor_t minor;
1344 int type;
1345 } disk_minor_data[] = {
1346 {"a", 0, S_IFBLK},
1347 {"b", 1, S_IFBLK},
1348 {"c", 2, S_IFBLK},
1349 {"d", 3, S_IFBLK},
1350 {"e", 4, S_IFBLK},
1351 {"f", 5, S_IFBLK},
1352 {"g", 6, S_IFBLK},
1353 {"h", 7, S_IFBLK},
1354 {"a,raw", 0, S_IFCHR},
1355 {"b,raw", 1, S_IFCHR},
1356 {"c,raw", 2, S_IFCHR},
1357 {"d,raw", 3, S_IFCHR},
1358 {"e,raw", 4, S_IFCHR},
1359 {"f,raw", 5, S_IFCHR},
1360 {"g,raw", 6, S_IFCHR},
1361 {"h,raw", 7, S_IFCHR},
1362 {0}
1363 };
1364
1365
1366 static struct driver_serial_minor_data {
1367 char *name;
1368 minor_t minor;
1369 int type;
1370 char *node_type;
1371 } serial_minor_data[] = {
1372 {"0", 0, S_IFCHR, "ddi_serial"},
1373 {"1", 1, S_IFCHR, "ddi_serial"},
1374 {"0,cu", 2, S_IFCHR, "ddi_serial:dialout"},
1375 {"1,cu", 3, S_IFCHR, "ddi_serial:dialout"},
1376 {0}
1377 };
1378
1379
1380 static int
gen_create_display(dev_info_t * devi)1381 gen_create_display(dev_info_t *devi)
1382 {
1383
1384 int instance = ddi_get_instance(devi);
1385 char minor_name[15];
1386
1387 (void) sprintf(minor_name, "cgtwenty%d", instance);
1388
1389 return (ddi_create_minor_node(devi, minor_name, S_IFCHR,
1390 INST_TO_MINOR(instance), DDI_NT_DISPLAY, 0));
1391 }
1392
1393 static int
gen_create_mn_disk_chan(dev_info_t * devi)1394 gen_create_mn_disk_chan(dev_info_t *devi)
1395 {
1396 struct driver_minor_data *dmdp;
1397 int instance = ddi_get_instance(devi);
1398
1399 if (gen_create_properties(devi) != DDI_SUCCESS)
1400 return (DDI_FAILURE);
1401
1402 for (dmdp = disk_minor_data; dmdp->name != NULL; dmdp++) {
1403 if (ddi_create_minor_node(devi, dmdp->name, dmdp->type,
1404 (INST_TO_MINOR(instance)) | dmdp->minor,
1405 DDI_NT_BLOCK_CHAN, 0) != DDI_SUCCESS) {
1406
1407 return (DDI_FAILURE);
1408 }
1409 }
1410 return (DDI_SUCCESS);
1411 }
1412
1413 static uint_t
atod(char * s)1414 atod(char *s)
1415 {
1416 uint_t val = 0;
1417 uint_t digit;
1418
1419 while (*s) {
1420 if (*s >= '0' && *s <= '9')
1421 digit = *s++ - '0';
1422 else
1423 break;
1424 val = (val * 10) + digit;
1425 }
1426 return (val);
1427 }
1428
1429
1430 static int
gen_create_mn_disk_wwn(dev_info_t * devi)1431 gen_create_mn_disk_wwn(dev_info_t *devi)
1432 {
1433 struct driver_minor_data *dmdp;
1434 int instance = ddi_get_instance(devi);
1435 char *address = ddi_get_name_addr(devi);
1436 int target, lun;
1437
1438 if (address[0] >= '0' && address[0] <= '9' &&
1439 strchr(address, ',')) {
1440 target = atod(address);
1441 address = strchr(address, ',');
1442 lun = atod(++address);
1443 } else { /* this hack is for rm_stale_link() testing */
1444 target = 10;
1445 lun = 5;
1446 }
1447
1448 if (ddi_prop_create(DDI_DEV_T_NONE, devi, DDI_PROP_CANSLEEP,
1449 "target", (caddr_t)&target, sizeof (int))
1450 != DDI_PROP_SUCCESS) {
1451 return (DDI_FAILURE);
1452 }
1453 if (ddi_prop_create(DDI_DEV_T_NONE, devi, DDI_PROP_CANSLEEP,
1454 "lun", (caddr_t)&lun, sizeof (int))
1455 != DDI_PROP_SUCCESS) {
1456 return (DDI_FAILURE);
1457 }
1458
1459 for (dmdp = disk_minor_data; dmdp->name != NULL; dmdp++) {
1460 if (ddi_create_minor_node(devi, dmdp->name, dmdp->type,
1461 (INST_TO_MINOR(instance)) | dmdp->minor,
1462 DDI_NT_BLOCK_WWN, 0) != DDI_SUCCESS) {
1463
1464 return (DDI_FAILURE);
1465 }
1466 }
1467 return (DDI_SUCCESS);
1468 }
1469
1470 static int
gen_create_mn_disk_cdrom(dev_info_t * devi)1471 gen_create_mn_disk_cdrom(dev_info_t *devi)
1472 {
1473 struct driver_minor_data *dmdp;
1474 int instance = ddi_get_instance(devi);
1475
1476 for (dmdp = disk_minor_data; dmdp->name != NULL; dmdp++) {
1477 if (ddi_create_minor_node(devi, dmdp->name, dmdp->type,
1478 (INST_TO_MINOR(instance)) | dmdp->minor,
1479 DDI_NT_CD_CHAN, 0) != DDI_SUCCESS) {
1480
1481 return (DDI_FAILURE);
1482 }
1483 }
1484 return (DDI_SUCCESS);
1485 }
1486
1487 static int
gen_create_mn_disk_fd(dev_info_t * devi)1488 gen_create_mn_disk_fd(dev_info_t *devi)
1489 {
1490 struct driver_minor_data *dmdp;
1491 int instance = ddi_get_instance(devi);
1492
1493 for (dmdp = disk_minor_data; dmdp->name != NULL; dmdp++) {
1494 if (ddi_create_minor_node(devi, dmdp->name, dmdp->type,
1495 (INST_TO_MINOR(instance)) | dmdp->minor,
1496 DDI_NT_BLOCK_CHAN, 0) != DDI_SUCCESS) {
1497
1498 return (DDI_FAILURE);
1499 }
1500 }
1501 return (DDI_SUCCESS);
1502 }
1503
1504 static int
gen_create_serial(dev_info_t * devi)1505 gen_create_serial(dev_info_t *devi)
1506 {
1507 struct driver_serial_minor_data *dmdp;
1508 int instance = ddi_get_instance(devi);
1509
1510 for (dmdp = serial_minor_data; dmdp->name != NULL; dmdp++) {
1511 if (ddi_create_minor_node(devi, dmdp->name, dmdp->type,
1512 (INST_TO_MINOR(instance)) | dmdp->minor,
1513 dmdp->node_type, 0) != DDI_SUCCESS) {
1514
1515 return (DDI_FAILURE);
1516 }
1517 }
1518 return (DDI_SUCCESS);
1519 }
1520
1521 static int
gen_create_net(dev_info_t * devi)1522 gen_create_net(dev_info_t *devi)
1523 {
1524 int instance = ddi_get_instance(devi);
1525 char minorname[32];
1526
1527 if (gen_create_properties(devi) != DDI_SUCCESS)
1528 return (DDI_FAILURE);
1529
1530 (void) snprintf(minorname, sizeof (minorname), "gen_drv%d", instance);
1531 return (ddi_create_minor_node(devi, minorname, S_IFCHR,
1532 INST_TO_MINOR(instance), DDI_NT_NET, 0));
1533 }
1534
1535 static int
gen_create_minor_nodes(dev_info_t * devi,struct dstate * dstatep)1536 gen_create_minor_nodes(dev_info_t *devi, struct dstate *dstatep)
1537 {
1538 int rval = DDI_SUCCESS;
1539 char *node_name;
1540
1541 node_name = ddi_node_name(devi);
1542
1543 if (strcmp(node_name, "disk_chan") == 0) {
1544 rval = gen_create_mn_disk_chan(devi);
1545 } else if (strcmp(node_name, "disk_wwn") == 0) {
1546 rval = gen_create_mn_disk_wwn(devi);
1547 } else if (strcmp(node_name, "disk_cdrom") == 0) {
1548 rval = gen_create_mn_disk_cdrom(devi);
1549 } else if (strcmp(node_name, "disk_fd") == 0) {
1550 rval = gen_create_mn_disk_fd(devi);
1551 } else if (strcmp(node_name, "cgtwenty") == 0) {
1552 rval = gen_create_display(devi);
1553 } else if (strcmp(node_name, "genzs") == 0) {
1554 rval = gen_create_serial(devi);
1555 } else if (strcmp(node_name, "net") == 0) {
1556 rval = gen_create_net(devi);
1557 } else {
1558 int instance = ddi_get_instance(devi);
1559 char *node_type;
1560
1561 /*
1562 * Solaris may directly hang the node_type off the minor node
1563 * (without making a copy). Since we free the node_type
1564 * property below we need to make a private copy to pass
1565 * to ddi_create_minor_node to avoid devinfo snapshot panics.
1566 * We store a pointer to our copy in dstate and free it in
1567 * gen_detach after the minor nodes have been deleted by
1568 * ddi_remove_minor_node.
1569 */
1570 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, devi,
1571 DDI_PROP_DONTPASS, "node-type", &node_type) != 0) {
1572 cmn_err(CE_WARN, "couldn't get node-type\n");
1573 return (DDI_FAILURE);
1574 }
1575 if (node_type) {
1576 dstatep->node_type = kmem_alloc(
1577 strlen(node_type) + 1, KM_SLEEP);
1578 (void) strcpy(dstatep->node_type, node_type);
1579 }
1580 ddi_prop_free(node_type);
1581
1582 /* the minor name is the same as the node name */
1583 if (ddi_create_minor_node(devi, node_name, S_IFCHR,
1584 (INST_TO_MINOR(instance)), dstatep->node_type, 0) !=
1585 DDI_SUCCESS) {
1586 if (dstatep->node_type) {
1587 kmem_free(dstatep->node_type,
1588 strlen(dstatep->node_type) + 1);
1589 dstatep->node_type = NULL;
1590 }
1591 return (DDI_FAILURE);
1592 }
1593 return (DDI_SUCCESS);
1594 }
1595
1596 if (rval != DDI_SUCCESS) {
1597 ddi_prop_remove_all(devi);
1598 ddi_remove_minor_node(devi, NULL);
1599 }
1600
1601 return (rval);
1602 }
1603
1604 /*ARGSUSED*/
1605 static void
gen_event_cb(dev_info_t * dip,ddi_eventcookie_t cookie,void * arg,void * impl_data)1606 gen_event_cb(dev_info_t *dip, ddi_eventcookie_t cookie, void *arg,
1607 void *impl_data)
1608 {
1609 if (gen_debug)
1610 cmn_err(CE_NOTE, "gen_event_cb invoked");
1611
1612 }
1613