1 /*- 2 * Copyright (c) 2000 Munehiro Matsuda 3 * Copyright (c) 2000 Takanori Watanabe 4 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include "opt_acpi.h" 32 #include <sys/param.h> 33 #include <sys/kernel.h> 34 #include <sys/module.h> 35 #include <sys/bus.h> 36 #include <sys/ioccom.h> 37 38 #include <machine/bus.h> 39 #include <sys/rman.h> 40 #include <sys/malloc.h> 41 42 #include "acpi.h" 43 #include <dev/acpica/acpivar.h> 44 #include <dev/acpica/acpiio.h> 45 46 MALLOC_DEFINE(M_ACPICMBAT, "acpicmbat", "ACPI control method battery data"); 47 48 /* Number of times to retry initialization before giving up. */ 49 #define ACPI_CMBAT_RETRY_MAX 6 50 51 /* Check the battery once a minute. */ 52 #define CMBAT_POLLRATE (60 * hz) 53 54 /* Hooks for the ACPI CA debugging infrastructure */ 55 #define _COMPONENT ACPI_BATTERY 56 ACPI_MODULE_NAME("BATTERY") 57 58 #define ACPI_BATTERY_BST_CHANGE 0x80 59 #define ACPI_BATTERY_BIF_CHANGE 0x81 60 61 struct acpi_cmbat_softc { 62 device_t dev; 63 64 struct acpi_bif bif; 65 struct acpi_bst bst; 66 struct timespec bif_lastupdated; 67 struct timespec bst_lastupdated; 68 int bif_updating; 69 int bst_updating; 70 71 int present; 72 int cap; 73 int min; 74 int full_charge_time; 75 int initializing; 76 }; 77 78 static struct timespec acpi_cmbat_info_lastupdated; 79 80 /* XXX: devclass_get_maxunit() don't give us the current allocated units. */ 81 static int acpi_cmbat_units = 0; 82 83 static int acpi_cmbat_info_expired(struct timespec *); 84 static void acpi_cmbat_info_updated(struct timespec *); 85 static void acpi_cmbat_get_bst(void *); 86 static void acpi_cmbat_get_bif(void *); 87 static void acpi_cmbat_notify_handler(ACPI_HANDLE, UINT32, void *); 88 static int acpi_cmbat_probe(device_t); 89 static int acpi_cmbat_attach(device_t); 90 static int acpi_cmbat_resume(device_t); 91 static int acpi_cmbat_ioctl(u_long, caddr_t, void *); 92 static int acpi_cmbat_is_bst_valid(struct acpi_bst*); 93 static int acpi_cmbat_is_bif_valid(struct acpi_bif*); 94 static int acpi_cmbat_get_total_battinfo(struct acpi_battinfo *); 95 static void acpi_cmbat_init_battery(void *); 96 97 static device_method_t acpi_cmbat_methods[] = { 98 /* Device interface */ 99 DEVMETHOD(device_probe, acpi_cmbat_probe), 100 DEVMETHOD(device_attach, acpi_cmbat_attach), 101 DEVMETHOD(device_resume, acpi_cmbat_resume), 102 103 {0, 0} 104 }; 105 106 static driver_t acpi_cmbat_driver = { 107 "acpi_cmbat", 108 acpi_cmbat_methods, 109 sizeof(struct acpi_cmbat_softc), 110 }; 111 112 static devclass_t acpi_cmbat_devclass; 113 DRIVER_MODULE(acpi_cmbat, acpi, acpi_cmbat_driver, acpi_cmbat_devclass, 0, 0); 114 MODULE_DEPEND(acpi_cmbat, acpi, 1, 1, 1); 115 116 static int 117 acpi_cmbat_info_expired(struct timespec *lastupdated) 118 { 119 struct timespec curtime; 120 121 if (lastupdated == NULL) 122 return (1); 123 if (!timespecisset(lastupdated)) 124 return (1); 125 126 getnanotime(&curtime); 127 timespecsub(&curtime, lastupdated); 128 return (curtime.tv_sec < 0 || 129 curtime.tv_sec > acpi_battery_get_info_expire()); 130 } 131 132 133 static void 134 acpi_cmbat_info_updated(struct timespec *lastupdated) 135 { 136 if (lastupdated != NULL) 137 getnanotime(lastupdated); 138 } 139 140 static void 141 acpi_cmbat_get_bst(void *context) 142 { 143 device_t dev; 144 struct acpi_cmbat_softc *sc; 145 ACPI_STATUS as; 146 ACPI_OBJECT *res; 147 ACPI_HANDLE h; 148 ACPI_BUFFER bst_buffer; 149 150 dev = context; 151 sc = device_get_softc(dev); 152 h = acpi_get_handle(dev); 153 154 if (!acpi_cmbat_info_expired(&sc->bst_lastupdated)) 155 return; 156 if (sc->bst_updating) 157 return; 158 sc->bst_updating = 1; 159 160 bst_buffer.Pointer = NULL; 161 bst_buffer.Length = ACPI_ALLOCATE_BUFFER; 162 as = AcpiEvaluateObject(h, "_BST", NULL, &bst_buffer); 163 if (ACPI_FAILURE(as)) { 164 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 165 "error fetching current battery status -- %s\n", 166 AcpiFormatException(as)); 167 goto end; 168 } 169 170 res = (ACPI_OBJECT *)bst_buffer.Pointer; 171 if (!ACPI_PKG_VALID(res, 4)) { 172 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 173 "battery status corrupted\n"); 174 goto end; 175 } 176 177 if (acpi_PkgInt32(res, 0, &sc->bst.state) != 0) 178 goto end; 179 if (acpi_PkgInt32(res, 1, &sc->bst.rate) != 0) 180 goto end; 181 if (acpi_PkgInt32(res, 2, &sc->bst.cap) != 0) 182 goto end; 183 if (acpi_PkgInt32(res, 3, &sc->bst.volt) != 0) 184 goto end; 185 acpi_cmbat_info_updated(&sc->bst_lastupdated); 186 187 end: 188 if (bst_buffer.Pointer != NULL) 189 AcpiOsFree(bst_buffer.Pointer); 190 sc->bst_updating = 0; 191 } 192 193 static void 194 acpi_cmbat_get_bif(void *context) 195 { 196 device_t dev; 197 struct acpi_cmbat_softc *sc; 198 ACPI_STATUS as; 199 ACPI_OBJECT *res; 200 ACPI_HANDLE h; 201 ACPI_BUFFER bif_buffer; 202 203 dev = context; 204 sc = device_get_softc(dev); 205 h = acpi_get_handle(dev); 206 207 if (!acpi_cmbat_info_expired(&sc->bif_lastupdated)) 208 return; 209 if (sc->bif_updating) 210 return; 211 sc->bif_updating = 1; 212 213 bif_buffer.Pointer = NULL; 214 bif_buffer.Length = ACPI_ALLOCATE_BUFFER; 215 as = AcpiEvaluateObject(h, "_BIF", NULL, &bif_buffer); 216 if (ACPI_FAILURE(as)) { 217 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 218 "error fetching current battery info -- %s\n", 219 AcpiFormatException(as)); 220 goto end; 221 } 222 223 res = (ACPI_OBJECT *)bif_buffer.Pointer; 224 if (!ACPI_PKG_VALID(res, 13)) { 225 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 226 "battery info corrupted\n"); 227 goto end; 228 } 229 230 if (acpi_PkgInt32(res, 0, &sc->bif.units) != 0) 231 goto end; 232 if (acpi_PkgInt32(res, 1, &sc->bif.dcap) != 0) 233 goto end; 234 if (acpi_PkgInt32(res, 2, &sc->bif.lfcap) != 0) 235 goto end; 236 if (acpi_PkgInt32(res, 3, &sc->bif.btech) != 0) 237 goto end; 238 if (acpi_PkgInt32(res, 4, &sc->bif.dvol) != 0) 239 goto end; 240 if (acpi_PkgInt32(res, 5, &sc->bif.wcap) != 0) 241 goto end; 242 if (acpi_PkgInt32(res, 6, &sc->bif.lcap) != 0) 243 goto end; 244 if (acpi_PkgInt32(res, 7, &sc->bif.gra1) != 0) 245 goto end; 246 if (acpi_PkgInt32(res, 8, &sc->bif.gra2) != 0) 247 goto end; 248 if (acpi_PkgStr(res, 9, sc->bif.model, ACPI_CMBAT_MAXSTRLEN) != 0) 249 goto end; 250 if (acpi_PkgStr(res, 10, sc->bif.serial, ACPI_CMBAT_MAXSTRLEN) != 0) 251 goto end; 252 if (acpi_PkgStr(res, 11, sc->bif.type, ACPI_CMBAT_MAXSTRLEN) != 0) 253 goto end; 254 if (acpi_PkgStr(res, 12, sc->bif.oeminfo, ACPI_CMBAT_MAXSTRLEN) != 0) 255 goto end; 256 acpi_cmbat_info_updated(&sc->bif_lastupdated); 257 258 end: 259 if (bif_buffer.Pointer != NULL) 260 AcpiOsFree(bif_buffer.Pointer); 261 sc->bif_updating = 0; 262 } 263 264 static void 265 acpi_cmbat_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 266 { 267 device_t dev; 268 struct acpi_cmbat_softc *sc; 269 270 dev = (device_t)context; 271 if ((sc = device_get_softc(dev)) == NULL) 272 return; 273 274 acpi_UserNotify("CMBAT", h, notify); 275 276 switch (notify) { 277 case ACPI_NOTIFY_DEVICE_CHECK: 278 case ACPI_BATTERY_BST_CHANGE: 279 timespecclear(&sc->bst_lastupdated); 280 break; 281 case ACPI_NOTIFY_BUS_CHECK: 282 case ACPI_BATTERY_BIF_CHANGE: 283 timespecclear(&sc->bif_lastupdated); 284 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_get_bif, dev); 285 break; 286 default: 287 break; 288 } 289 } 290 291 static int 292 acpi_cmbat_probe(device_t dev) 293 { 294 static char *cmbat_ids[] = { "PNP0C0A", NULL }; 295 296 if (acpi_disabled("cmbat") || 297 ACPI_ID_PROBE(device_get_parent(dev), dev, cmbat_ids) == NULL) 298 return (ENXIO); 299 300 device_set_desc(dev, "Control Method Battery"); 301 return (0); 302 } 303 304 static int 305 acpi_cmbat_attach(device_t dev) 306 { 307 int error; 308 ACPI_HANDLE handle; 309 struct acpi_cmbat_softc *sc; 310 311 if ((sc = device_get_softc(dev)) == NULL) 312 return (ENXIO); 313 314 handle = acpi_get_handle(dev); 315 316 /* 317 * Install a system notify handler in addition to the device notify. 318 * Toshiba notebook uses this alternate notify for its battery. 319 */ 320 AcpiInstallNotifyHandler(handle, ACPI_SYSTEM_NOTIFY, 321 acpi_cmbat_notify_handler, dev); 322 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY, 323 acpi_cmbat_notify_handler, dev); 324 325 sc->bif_updating = sc->bst_updating = 0; 326 sc->dev = dev; 327 328 timespecclear(&sc->bif_lastupdated); 329 timespecclear(&sc->bst_lastupdated); 330 331 if (acpi_cmbat_units == 0) { 332 error = acpi_register_ioctl(ACPIIO_CMBAT_GET_BIF, 333 acpi_cmbat_ioctl, NULL); 334 if (error != 0) 335 return (error); 336 error = acpi_register_ioctl(ACPIIO_CMBAT_GET_BST, 337 acpi_cmbat_ioctl, NULL); 338 if (error != 0) 339 return (error); 340 } 341 342 error = acpi_battery_register(ACPI_BATT_TYPE_CMBAT, acpi_cmbat_units); 343 if (error != 0) 344 return (error); 345 346 acpi_cmbat_units++; 347 timespecclear(&acpi_cmbat_info_lastupdated); 348 sc->initializing = 0; 349 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_init_battery, dev); 350 351 return (0); 352 } 353 354 static int 355 acpi_cmbat_resume(device_t dev) 356 { 357 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_init_battery, dev); 358 return (0); 359 } 360 361 static int 362 acpi_cmbat_ioctl(u_long cmd, caddr_t addr, void *arg) 363 { 364 device_t dev; 365 union acpi_battery_ioctl_arg *ioctl_arg; 366 struct acpi_cmbat_softc *sc; 367 struct acpi_bif *bifp; 368 struct acpi_bst *bstp; 369 370 ioctl_arg = (union acpi_battery_ioctl_arg *)addr; 371 dev = devclass_get_device(acpi_cmbat_devclass, ioctl_arg->unit); 372 if (dev == NULL) 373 return (ENXIO); 374 sc = device_get_softc(dev); 375 if (sc == NULL) 376 return (ENXIO); 377 378 /* 379 * No security check required: information retrieval only. If 380 * new functions are added here, a check might be required. 381 */ 382 switch (cmd) { 383 case ACPIIO_CMBAT_GET_BIF: 384 acpi_cmbat_get_bif(dev); 385 bifp = &ioctl_arg->bif; 386 bifp->units = sc->bif.units; 387 bifp->dcap = sc->bif.dcap; 388 bifp->lfcap = sc->bif.lfcap; 389 bifp->btech = sc->bif.btech; 390 bifp->dvol = sc->bif.dvol; 391 bifp->wcap = sc->bif.wcap; 392 bifp->lcap = sc->bif.lcap; 393 bifp->gra1 = sc->bif.gra1; 394 bifp->gra2 = sc->bif.gra2; 395 strncpy(bifp->model, sc->bif.model, sizeof(sc->bif.model)); 396 strncpy(bifp->serial, sc->bif.serial, sizeof(sc->bif.serial)); 397 strncpy(bifp->type, sc->bif.type, sizeof(sc->bif.type)); 398 strncpy(bifp->oeminfo, sc->bif.oeminfo, sizeof(sc->bif.oeminfo)); 399 break; 400 case ACPIIO_CMBAT_GET_BST: 401 bstp = &ioctl_arg->bst; 402 if (acpi_BatteryIsPresent(dev)) { 403 acpi_cmbat_get_bst(dev); 404 bstp->state = sc->bst.state; 405 bstp->rate = sc->bst.rate; 406 bstp->cap = sc->bst.cap; 407 bstp->volt = sc->bst.volt; 408 } else { 409 bstp->state = ACPI_BATT_STAT_NOT_PRESENT; 410 } 411 break; 412 default: 413 break; 414 } 415 416 return (0); 417 } 418 419 static int 420 acpi_cmbat_is_bst_valid(struct acpi_bst *bst) 421 { 422 if (bst->state >= ACPI_BATT_STAT_MAX || bst->cap == 0xffffffff || 423 bst->volt == 0xffffffff) 424 425 return (0); 426 else 427 return (1); 428 } 429 430 static int 431 acpi_cmbat_is_bif_valid(struct acpi_bif *bif) 432 { 433 if (bif->lfcap == 0) 434 return (0); 435 else 436 return (1); 437 } 438 439 static int 440 acpi_cmbat_get_total_battinfo(struct acpi_battinfo *battinfo) 441 { 442 int i; 443 int error; 444 int batt_stat; 445 int valid_rate, valid_units; 446 int cap, min; 447 int total_cap, total_min, total_full; 448 device_t dev; 449 struct acpi_cmbat_softc *sc; 450 static int bat_units = 0; 451 static struct acpi_cmbat_softc **bat = NULL; 452 453 cap = min = -1; 454 batt_stat = ACPI_BATT_STAT_NOT_PRESENT; 455 error = 0; 456 457 /* Allocate array of softc pointers */ 458 if (bat_units != acpi_cmbat_units) { 459 if (bat != NULL) { 460 free(bat, M_ACPICMBAT); 461 bat = NULL; 462 } 463 bat_units = 0; 464 } 465 if (bat == NULL) { 466 bat_units = acpi_cmbat_units; 467 bat = malloc(sizeof(struct acpi_cmbat_softc *) * bat_units, 468 M_ACPICMBAT, M_NOWAIT); 469 if (bat == NULL) { 470 error = ENOMEM; 471 goto out; 472 } 473 474 /* Collect softc pointers */ 475 for (i = 0; i < acpi_cmbat_units; i++) { 476 if ((dev = devclass_get_device(acpi_cmbat_devclass, i)) == NULL) { 477 error = ENXIO; 478 goto out; 479 } 480 if ((sc = device_get_softc(dev)) == NULL) { 481 error = ENXIO; 482 goto out; 483 } 484 bat[i] = sc; 485 } 486 } 487 488 /* Get battery status, valid rate and valid units */ 489 batt_stat = valid_rate = valid_units = 0; 490 for (i = 0; i < acpi_cmbat_units; i++) { 491 bat[i]->present = acpi_BatteryIsPresent(bat[i]->dev); 492 if (!bat[i]->present) 493 continue; 494 495 acpi_cmbat_get_bst(bat[i]->dev); 496 497 /* If battery not installed, we get strange values */ 498 if (!acpi_cmbat_is_bst_valid(&(bat[i]->bst)) || 499 !acpi_cmbat_is_bif_valid(&(bat[i]->bif))) { 500 501 bat[i]->present = 0; 502 continue; 503 } 504 505 valid_units++; 506 bat[i]->cap = 100 * bat[i]->bst.cap / bat[i]->bif.lfcap; 507 batt_stat |= bat[i]->bst.state; 508 509 if (bat[i]->bst.rate > 0) { 510 /* 511 * XXX Hack to calculate total battery time. 512 * Systems with 2 or more battries, they may get used 513 * one by one, thus bst.rate is set only to the one 514 * in use. For remaining batteries bst.rate = 0, which 515 * makes it impossible to calculate remaining time. 516 * Some other systems may need sum of bst.rate in 517 * dis-charging state. 518 * There for we sum up the bst.rate that is valid 519 * (in dis-charging state), and use the sum to 520 * calcutate remaining batteries' time. 521 */ 522 if (bat[i]->bst.state & ACPI_BATT_STAT_DISCHARG) 523 valid_rate += bat[i]->bst.rate; 524 } 525 } 526 527 /* Calculate total battery capacity and time */ 528 total_cap = total_min = total_full = 0; 529 for (i = 0; i < acpi_cmbat_units; i++) { 530 if (!bat[i]->present) 531 continue; 532 533 if (valid_rate > 0) { 534 /* Use the sum of bst.rate */ 535 bat[i]->min = 60 * bat[i]->bst.cap / valid_rate; 536 } else if (bat[i]->full_charge_time > 0) { 537 bat[i]->min = (bat[i]->full_charge_time * bat[i]->cap) / 100; 538 } else { 539 /* Couldn't find valid rate and full battery time */ 540 bat[i]->min = 0; 541 } 542 total_min += bat[i]->min; 543 total_cap += bat[i]->cap; 544 total_full += bat[i]->full_charge_time; 545 } 546 547 /* Battery life */ 548 if (valid_units == 0) { 549 cap = -1; 550 batt_stat = ACPI_BATT_STAT_NOT_PRESENT; 551 } else { 552 cap = total_cap / valid_units; 553 } 554 555 /* Battery time */ 556 if (valid_units == 0) { 557 min = -1; 558 } else if (valid_rate == 0 || (batt_stat & ACPI_BATT_STAT_CHARGING)) { 559 if (total_full == 0) 560 min = -1; 561 else 562 min = (total_full * cap) / 100; 563 } else { 564 min = total_min; 565 } 566 acpi_cmbat_info_updated(&acpi_cmbat_info_lastupdated); 567 568 out: 569 battinfo->cap = cap; 570 battinfo->min = min; 571 battinfo->state = batt_stat; 572 573 return (error); 574 } 575 576 static void 577 acpi_cmbat_init_battery(void *arg) 578 { 579 int retry; 580 device_t dev = (device_t)arg; 581 struct acpi_cmbat_softc *sc = device_get_softc(dev); 582 583 if (sc->initializing) 584 return; 585 586 sc->initializing = 1; 587 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 588 "battery initialization start\n"); 589 590 for (retry = 0; retry < ACPI_CMBAT_RETRY_MAX; retry++, AcpiOsSleep(10, 0)) { 591 sc->present = acpi_BatteryIsPresent(dev); 592 if (!sc->present) 593 continue; 594 595 timespecclear(&sc->bst_lastupdated); 596 timespecclear(&sc->bif_lastupdated); 597 598 acpi_cmbat_get_bst(dev); 599 if (!acpi_cmbat_is_bst_valid(&sc->bst)) 600 continue; 601 602 acpi_cmbat_get_bif(dev); 603 if (!acpi_cmbat_is_bif_valid(&sc->bif)) 604 continue; 605 break; 606 } 607 608 sc->initializing = 0; 609 if (retry == ACPI_CMBAT_RETRY_MAX) { 610 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 611 "battery initialization failed, giving up\n"); 612 } else { 613 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 614 "battery initialization done, tried %d times\n", retry + 1); 615 } 616 } 617 618 /* 619 * Public interfaces. 620 */ 621 int 622 acpi_cmbat_get_battinfo(int unit, struct acpi_battinfo *battinfo) 623 { 624 int error; 625 device_t dev; 626 struct acpi_cmbat_softc *sc; 627 628 if (unit == -1) 629 return (acpi_cmbat_get_total_battinfo(battinfo)); 630 631 if (acpi_cmbat_info_expired(&acpi_cmbat_info_lastupdated)) { 632 error = acpi_cmbat_get_total_battinfo(battinfo); 633 if (error) 634 goto out; 635 } 636 637 error = 0; 638 if (unit >= acpi_cmbat_units) { 639 error = ENXIO; 640 goto out; 641 } 642 643 if ((dev = devclass_get_device(acpi_cmbat_devclass, unit)) == NULL) { 644 error = ENXIO; 645 goto out; 646 } 647 if ((sc = device_get_softc(dev)) == NULL) { 648 error = ENXIO; 649 goto out; 650 } 651 652 if (!sc->present) { 653 battinfo->cap = -1; 654 battinfo->min = -1; 655 battinfo->state = ACPI_BATT_STAT_NOT_PRESENT; 656 } else { 657 battinfo->cap = sc->cap; 658 battinfo->min = sc->min; 659 battinfo->state = sc->bst.state; 660 } 661 662 out: 663 return (error); 664 } 665