1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2019 Andriy Gapon 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/bus.h> 36 #include <sys/conf.h> 37 #include <sys/kernel.h> 38 #include <sys/lock.h> 39 #include <sys/mutex.h> 40 #include <sys/malloc.h> 41 #include <sys/module.h> 42 #include <sys/proc.h> 43 #include <sys/rman.h> 44 #include <sys/sbuf.h> 45 #include <sys/time.h> 46 47 #include <machine/bus.h> 48 #include <machine/resource.h> 49 #include <machine/stdarg.h> 50 51 #include <isa/isavar.h> 52 53 #include <dev/superio/superio.h> 54 #include <dev/superio/superio_io.h> 55 56 #include "isa_if.h" 57 58 typedef void (*sio_conf_enter_f)(struct resource*, uint16_t); 59 typedef void (*sio_conf_exit_f)(struct resource*, uint16_t); 60 61 struct sio_conf_methods { 62 sio_conf_enter_f enter; 63 sio_conf_exit_f exit; 64 superio_vendor_t vendor; 65 }; 66 67 struct sio_device { 68 uint8_t ldn; 69 superio_dev_type_t type; 70 }; 71 72 struct superio_devinfo { 73 STAILQ_ENTRY(superio_devinfo) link; 74 struct resource_list resources; 75 device_t dev; 76 uint8_t ldn; 77 superio_dev_type_t type; 78 uint16_t iobase; 79 uint16_t iobase2; 80 uint8_t irq; 81 uint8_t dma; 82 }; 83 84 struct siosc { 85 struct mtx conf_lock; 86 STAILQ_HEAD(, superio_devinfo) devlist; 87 struct resource* io_res; 88 struct cdev *chardev; 89 int io_rid; 90 uint16_t io_port; 91 const struct sio_conf_methods *methods; 92 const struct sio_device *known_devices; 93 superio_vendor_t vendor; 94 uint16_t devid; 95 uint8_t revid; 96 uint8_t current_ldn; 97 uint8_t ldn_reg; 98 uint8_t enable_reg; 99 }; 100 101 static d_ioctl_t superio_ioctl; 102 103 static struct cdevsw superio_cdevsw = { 104 .d_version = D_VERSION, 105 .d_ioctl = superio_ioctl, 106 .d_name = "superio", 107 }; 108 109 #define NUMPORTS 2 110 111 static uint8_t 112 sio_read(struct resource* res, uint8_t reg) 113 { 114 bus_write_1(res, 0, reg); 115 return (bus_read_1(res, 1)); 116 } 117 118 /* Read a word from two one-byte registers, big endian. */ 119 static uint16_t 120 sio_readw(struct resource* res, uint8_t reg) 121 { 122 uint16_t v; 123 124 v = sio_read(res, reg); 125 v <<= 8; 126 v |= sio_read(res, reg + 1); 127 return (v); 128 } 129 130 static void 131 sio_write(struct resource* res, uint8_t reg, uint8_t val) 132 { 133 bus_write_1(res, 0, reg); 134 bus_write_1(res, 1, val); 135 } 136 137 static void 138 sio_ldn_select(struct siosc *sc, uint8_t ldn) 139 { 140 mtx_assert(&sc->conf_lock, MA_OWNED); 141 if (ldn == sc->current_ldn) 142 return; 143 sio_write(sc->io_res, sc->ldn_reg, ldn); 144 sc->current_ldn = ldn; 145 } 146 147 static uint8_t 148 sio_ldn_read(struct siosc *sc, uint8_t ldn, uint8_t reg) 149 { 150 mtx_assert(&sc->conf_lock, MA_OWNED); 151 if (reg >= sc->enable_reg) { 152 sio_ldn_select(sc, ldn); 153 KASSERT(sc->current_ldn == ldn, ("sio_ldn_select failed")); 154 } 155 return (sio_read(sc->io_res, reg)); 156 } 157 158 static uint16_t 159 sio_ldn_readw(struct siosc *sc, uint8_t ldn, uint8_t reg) 160 { 161 mtx_assert(&sc->conf_lock, MA_OWNED); 162 if (reg >= sc->enable_reg) { 163 sio_ldn_select(sc, ldn); 164 KASSERT(sc->current_ldn == ldn, ("sio_ldn_select failed")); 165 } 166 return (sio_readw(sc->io_res, reg)); 167 } 168 169 static void 170 sio_ldn_write(struct siosc *sc, uint8_t ldn, uint8_t reg, uint8_t val) 171 { 172 mtx_assert(&sc->conf_lock, MA_OWNED); 173 if (reg <= sc->ldn_reg) { 174 printf("ignored attempt to write special register 0x%x\n", reg); 175 return; 176 } 177 sio_ldn_select(sc, ldn); 178 KASSERT(sc->current_ldn == ldn, ("sio_ldn_select failed")); 179 sio_write(sc->io_res, reg, val); 180 } 181 182 static void 183 sio_conf_enter(struct siosc *sc) 184 { 185 mtx_lock(&sc->conf_lock); 186 sc->methods->enter(sc->io_res, sc->io_port); 187 } 188 189 static void 190 sio_conf_exit(struct siosc *sc) 191 { 192 sc->methods->exit(sc->io_res, sc->io_port); 193 sc->current_ldn = 0xff; 194 mtx_unlock(&sc->conf_lock); 195 } 196 197 static void 198 ite_conf_enter(struct resource* res, uint16_t port) 199 { 200 bus_write_1(res, 0, 0x87); 201 bus_write_1(res, 0, 0x01); 202 bus_write_1(res, 0, 0x55); 203 bus_write_1(res, 0, port == 0x2e ? 0x55 : 0xaa); 204 } 205 206 static void 207 ite_conf_exit(struct resource* res, uint16_t port) 208 { 209 sio_write(res, 0x02, 0x02); 210 } 211 212 static const struct sio_conf_methods ite_conf_methods = { 213 .enter = ite_conf_enter, 214 .exit = ite_conf_exit, 215 .vendor = SUPERIO_VENDOR_ITE 216 }; 217 218 static void 219 nvt_conf_enter(struct resource* res, uint16_t port) 220 { 221 bus_write_1(res, 0, 0x87); 222 bus_write_1(res, 0, 0x87); 223 } 224 225 static void 226 nvt_conf_exit(struct resource* res, uint16_t port) 227 { 228 bus_write_1(res, 0, 0xaa); 229 } 230 231 static const struct sio_conf_methods nvt_conf_methods = { 232 .enter = nvt_conf_enter, 233 .exit = nvt_conf_exit, 234 .vendor = SUPERIO_VENDOR_NUVOTON 235 }; 236 237 static void 238 fintek_conf_enter(struct resource* res, uint16_t port) 239 { 240 bus_write_1(res, 0, 0x87); 241 bus_write_1(res, 0, 0x87); 242 } 243 244 static void 245 fintek_conf_exit(struct resource* res, uint16_t port) 246 { 247 bus_write_1(res, 0, 0xaa); 248 } 249 250 static const struct sio_conf_methods fintek_conf_methods = { 251 .enter = fintek_conf_enter, 252 .exit = fintek_conf_exit, 253 .vendor = SUPERIO_VENDOR_FINTEK 254 }; 255 256 static const struct sio_conf_methods * const methods_table[] = { 257 &ite_conf_methods, 258 &nvt_conf_methods, 259 &fintek_conf_methods, 260 NULL 261 }; 262 263 static const uint16_t ports_table[] = { 264 0x2e, 0x4e, 0 265 }; 266 267 const struct sio_device ite_devices[] = { 268 { .ldn = 4, .type = SUPERIO_DEV_HWM }, 269 { .ldn = 7, .type = SUPERIO_DEV_WDT }, 270 { .type = SUPERIO_DEV_NONE }, 271 }; 272 273 const struct sio_device nvt_devices[] = { 274 { .ldn = 8, .type = SUPERIO_DEV_WDT }, 275 { .type = SUPERIO_DEV_NONE }, 276 }; 277 278 const struct sio_device nct5104_devices[] = { 279 { .ldn = 7, .type = SUPERIO_DEV_GPIO }, 280 { .ldn = 8, .type = SUPERIO_DEV_WDT }, 281 { .ldn = 15, .type = SUPERIO_DEV_GPIO }, 282 { .type = SUPERIO_DEV_NONE }, 283 }; 284 285 const struct sio_device fintek_devices[] = { 286 { .ldn = 7, .type = SUPERIO_DEV_WDT }, 287 { .type = SUPERIO_DEV_NONE }, 288 }; 289 290 static const struct { 291 superio_vendor_t vendor; 292 uint16_t devid; 293 uint16_t mask; 294 const char *descr; 295 const struct sio_device *devices; 296 } superio_table[] = { 297 { 298 .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8712, 299 .devices = ite_devices, 300 }, 301 { 302 .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8716, 303 .devices = ite_devices, 304 }, 305 { 306 .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8718, 307 .devices = ite_devices, 308 }, 309 { 310 .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8720, 311 .devices = ite_devices, 312 }, 313 { 314 .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8721, 315 .devices = ite_devices, 316 }, 317 { 318 .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8726, 319 .devices = ite_devices, 320 }, 321 { 322 .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8728, 323 .devices = ite_devices, 324 }, 325 { 326 .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8771, 327 .devices = ite_devices, 328 }, 329 { 330 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x1061, .mask = 0x00, 331 .descr = "Nuvoton NCT5104D/NCT6102D/NCT6106D (rev. A)", 332 .devices = nct5104_devices, 333 }, 334 { 335 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x5200, .mask = 0xff, 336 .descr = "Winbond 83627HF/F/HG/G", 337 .devices = nvt_devices, 338 }, 339 { 340 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x5900, .mask = 0xff, 341 .descr = "Winbond 83627S", 342 .devices = nvt_devices, 343 }, 344 { 345 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x6000, .mask = 0xff, 346 .descr = "Winbond 83697HF", 347 .devices = nvt_devices, 348 }, 349 { 350 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x6800, .mask = 0xff, 351 .descr = "Winbond 83697UG", 352 .devices = nvt_devices, 353 }, 354 { 355 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x7000, .mask = 0xff, 356 .descr = "Winbond 83637HF", 357 .devices = nvt_devices, 358 }, 359 { 360 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x8200, .mask = 0xff, 361 .descr = "Winbond 83627THF", 362 .devices = nvt_devices, 363 }, 364 { 365 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x8500, .mask = 0xff, 366 .descr = "Winbond 83687THF", 367 .devices = nvt_devices, 368 }, 369 { 370 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x8800, .mask = 0xff, 371 .descr = "Winbond 83627EHF", 372 .devices = nvt_devices, 373 }, 374 { 375 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xa000, .mask = 0xff, 376 .descr = "Winbond 83627DHG", 377 .devices = nvt_devices, 378 }, 379 { 380 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xa200, .mask = 0xff, 381 .descr = "Winbond 83627UHG", 382 .devices = nvt_devices, 383 }, 384 { 385 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xa500, .mask = 0xff, 386 .descr = "Winbond 83667HG", 387 .devices = nvt_devices, 388 }, 389 { 390 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xb000, .mask = 0xff, 391 .descr = "Winbond 83627DHG-P", 392 .devices = nvt_devices, 393 }, 394 { 395 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xb300, .mask = 0xff, 396 .descr = "Winbond 83667HG-B", 397 .devices = nvt_devices, 398 }, 399 { 400 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xb400, .mask = 0xff, 401 .descr = "Nuvoton NCT6775", 402 .devices = nvt_devices, 403 }, 404 { 405 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xc300, .mask = 0xff, 406 .descr = "Nuvoton NCT6776", 407 .devices = nvt_devices, 408 }, 409 { 410 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xc400, .mask = 0xff, 411 .descr = "Nuvoton NCT5104D/NCT6102D/NCT6106D (rev. B+)", 412 .devices = nct5104_devices, 413 }, 414 { 415 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xc500, .mask = 0xff, 416 .descr = "Nuvoton NCT6779", 417 .devices = nvt_devices, 418 }, 419 { 420 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xc800, .mask = 0xff, 421 .descr = "Nuvoton NCT6791", 422 .devices = nvt_devices, 423 }, 424 { 425 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xc900, .mask = 0xff, 426 .descr = "Nuvoton NCT6792", 427 .devices = nvt_devices, 428 }, 429 { 430 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xd100, .mask = 0xff, 431 .descr = "Nuvoton NCT6793", 432 .devices = nvt_devices, 433 }, 434 { 435 .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xd300, .mask = 0xff, 436 .descr = "Nuvoton NCT6795", 437 .devices = nvt_devices, 438 }, 439 { 440 .vendor = SUPERIO_VENDOR_FINTEK, .devid = 0x1210, .mask = 0xff, 441 .descr = "Fintek F81803", 442 .devices = fintek_devices, 443 }, 444 { 0, 0 } 445 }; 446 447 static const char * 448 devtype_to_str(superio_dev_type_t type) 449 { 450 switch (type) { 451 case SUPERIO_DEV_NONE: 452 return ("none"); 453 case SUPERIO_DEV_HWM: 454 return ("HWM"); 455 case SUPERIO_DEV_WDT: 456 return ("WDT"); 457 case SUPERIO_DEV_GPIO: 458 return ("GPIO"); 459 case SUPERIO_DEV_MAX: 460 return ("invalid"); 461 } 462 return ("invalid"); 463 } 464 465 static int 466 superio_detect(device_t dev, bool claim, struct siosc *sc) 467 { 468 struct resource *res; 469 rman_res_t port; 470 rman_res_t count; 471 uint16_t devid; 472 uint8_t revid; 473 int error; 474 int rid; 475 int i, m; 476 477 error = bus_get_resource(dev, SYS_RES_IOPORT, 0, &port, &count); 478 if (error != 0) 479 return (error); 480 if (port > UINT16_MAX || count < NUMPORTS) { 481 device_printf(dev, "unexpected I/O range size\n"); 482 return (ENXIO); 483 } 484 485 /* 486 * Make a temporary resource reservation for hardware probing. 487 * If we can't get the resources we need then 488 * we need to abort. Possibly this indicates 489 * the resources were used by another device 490 * in which case the probe would have failed anyhow. 491 */ 492 rid = 0; 493 res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE); 494 if (res == NULL) { 495 if (claim) 496 device_printf(dev, "failed to allocate I/O resource\n"); 497 return (ENXIO); 498 } 499 500 for (m = 0; methods_table[m] != NULL; m++) { 501 methods_table[m]->enter(res, port); 502 if (methods_table[m]->vendor == SUPERIO_VENDOR_ITE) { 503 devid = sio_readw(res, 0x20); 504 revid = sio_read(res, 0x22); 505 } else if (methods_table[m]->vendor == SUPERIO_VENDOR_NUVOTON) { 506 devid = sio_read(res, 0x20); 507 revid = sio_read(res, 0x21); 508 devid = (devid << 8) | revid; 509 } else if (methods_table[m]->vendor == SUPERIO_VENDOR_FINTEK) { 510 devid = sio_read(res, 0x20); 511 revid = sio_read(res, 0x21); 512 devid = (devid << 8) | revid; 513 } else { 514 continue; 515 } 516 methods_table[m]->exit(res, port); 517 for (i = 0; superio_table[i].vendor != 0; i++) { 518 uint16_t mask; 519 520 mask = superio_table[i].mask; 521 if (superio_table[i].vendor != 522 methods_table[m]->vendor) 523 continue; 524 if ((superio_table[i].devid & ~mask) != (devid & ~mask)) 525 continue; 526 break; 527 } 528 529 /* Found a matching SuperIO entry. */ 530 if (superio_table[i].vendor != 0) 531 break; 532 } 533 534 if (methods_table[m] == NULL) 535 error = ENXIO; 536 else 537 error = 0; 538 if (!claim || error != 0) { 539 bus_release_resource(dev, SYS_RES_IOPORT, rid, res); 540 return (error); 541 } 542 543 sc->methods = methods_table[m]; 544 sc->vendor = sc->methods->vendor; 545 sc->known_devices = superio_table[i].devices; 546 sc->io_res = res; 547 sc->io_rid = rid; 548 sc->io_port = port; 549 sc->devid = devid; 550 sc->revid = revid; 551 552 KASSERT(sc->vendor == SUPERIO_VENDOR_ITE || 553 sc->vendor == SUPERIO_VENDOR_NUVOTON, 554 ("Only ITE and Nuvoton SuperIO-s are supported")); 555 sc->ldn_reg = 0x07; 556 sc->enable_reg = 0x30; 557 sc->current_ldn = 0xff; /* no device should have this */ 558 559 if (superio_table[i].descr != NULL) { 560 device_set_desc(dev, superio_table[i].descr); 561 } else if (sc->vendor == SUPERIO_VENDOR_ITE) { 562 char descr[64]; 563 564 snprintf(descr, sizeof(descr), 565 "ITE IT%4x SuperIO (revision 0x%02x)", 566 sc->devid, sc->revid); 567 device_set_desc_copy(dev, descr); 568 } 569 return (0); 570 } 571 572 static void 573 superio_identify(driver_t *driver, device_t parent) 574 { 575 device_t child; 576 int i; 577 578 /* 579 * Don't create child devices if any already exist. 580 * Those could be created via isa hints or if this 581 * driver is loaded, unloaded and then loaded again. 582 */ 583 if (device_find_child(parent, "superio", -1)) { 584 if (bootverbose) 585 printf("superio: device(s) already created\n"); 586 return; 587 } 588 589 /* 590 * Create a child for each candidate port. 591 * It would be nice if we could somehow clean up those 592 * that this driver fails to probe. 593 */ 594 for (i = 0; ports_table[i] != 0; i++) { 595 child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, 596 "superio", -1); 597 if (child == NULL) { 598 device_printf(parent, "failed to add superio child\n"); 599 continue; 600 } 601 bus_set_resource(child, SYS_RES_IOPORT, 0, ports_table[i], 2); 602 if (superio_detect(child, false, NULL) != 0) 603 device_delete_child(parent, child); 604 } 605 } 606 607 static int 608 superio_probe(device_t dev) 609 { 610 struct siosc *sc; 611 int error; 612 613 /* Make sure we do not claim some ISA PNP device. */ 614 if (isa_get_logicalid(dev) != 0) 615 return (ENXIO); 616 617 /* 618 * XXX We can populate the softc now only because we return 619 * BUS_PROBE_SPECIFIC 620 */ 621 sc = device_get_softc(dev); 622 error = superio_detect(dev, true, sc); 623 if (error != 0) 624 return (error); 625 return (BUS_PROBE_SPECIFIC); 626 } 627 628 static void 629 superio_add_known_child(device_t dev, superio_dev_type_t type, uint8_t ldn) 630 { 631 struct siosc *sc = device_get_softc(dev); 632 struct superio_devinfo *dinfo; 633 device_t child; 634 635 child = BUS_ADD_CHILD(dev, 0, NULL, -1); 636 if (child == NULL) { 637 device_printf(dev, "failed to add child for ldn %d, type %s\n", 638 ldn, devtype_to_str(type)); 639 return; 640 } 641 dinfo = device_get_ivars(child); 642 dinfo->ldn = ldn; 643 dinfo->type = type; 644 sio_conf_enter(sc); 645 dinfo->iobase = sio_ldn_readw(sc, ldn, 0x60); 646 dinfo->iobase2 = sio_ldn_readw(sc, ldn, 0x62); 647 dinfo->irq = sio_ldn_readw(sc, ldn, 0x70); 648 dinfo->dma = sio_ldn_readw(sc, ldn, 0x74); 649 sio_conf_exit(sc); 650 STAILQ_INSERT_TAIL(&sc->devlist, dinfo, link); 651 } 652 653 static int 654 superio_attach(device_t dev) 655 { 656 struct siosc *sc = device_get_softc(dev); 657 int i; 658 659 mtx_init(&sc->conf_lock, device_get_nameunit(dev), "superio", MTX_DEF); 660 STAILQ_INIT(&sc->devlist); 661 662 for (i = 0; sc->known_devices[i].type != SUPERIO_DEV_NONE; i++) { 663 superio_add_known_child(dev, sc->known_devices[i].type, 664 sc->known_devices[i].ldn); 665 } 666 667 bus_generic_probe(dev); 668 bus_generic_attach(dev); 669 670 sc->chardev = make_dev(&superio_cdevsw, device_get_unit(dev), 671 UID_ROOT, GID_WHEEL, 0600, "superio%d", device_get_unit(dev)); 672 if (sc->chardev == NULL) 673 device_printf(dev, "failed to create character device\n"); 674 else 675 sc->chardev->si_drv1 = sc; 676 return (0); 677 } 678 679 static int 680 superio_detach(device_t dev) 681 { 682 struct siosc *sc = device_get_softc(dev); 683 int error; 684 685 error = bus_generic_detach(dev); 686 if (error != 0) 687 return (error); 688 if (sc->chardev != NULL) 689 destroy_dev(sc->chardev); 690 device_delete_children(dev); 691 bus_release_resource(dev, SYS_RES_IOPORT, sc->io_rid, sc->io_res); 692 mtx_destroy(&sc->conf_lock); 693 return (0); 694 } 695 696 static device_t 697 superio_add_child(device_t dev, u_int order, const char *name, int unit) 698 { 699 struct superio_devinfo *dinfo; 700 device_t child; 701 702 child = device_add_child_ordered(dev, order, name, unit); 703 if (child == NULL) 704 return (NULL); 705 dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_NOWAIT | M_ZERO); 706 if (dinfo == NULL) { 707 device_delete_child(dev, child); 708 return (NULL); 709 } 710 dinfo->ldn = 0xff; 711 dinfo->type = SUPERIO_DEV_NONE; 712 dinfo->dev = child; 713 resource_list_init(&dinfo->resources); 714 device_set_ivars(child, dinfo); 715 return (child); 716 } 717 718 static int 719 superio_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 720 { 721 struct superio_devinfo *dinfo; 722 723 dinfo = device_get_ivars(child); 724 switch (which) { 725 case SUPERIO_IVAR_LDN: 726 *result = dinfo->ldn; 727 break; 728 case SUPERIO_IVAR_TYPE: 729 *result = dinfo->type; 730 break; 731 case SUPERIO_IVAR_IOBASE: 732 *result = dinfo->iobase; 733 break; 734 case SUPERIO_IVAR_IOBASE2: 735 *result = dinfo->iobase2; 736 break; 737 case SUPERIO_IVAR_IRQ: 738 *result = dinfo->irq; 739 break; 740 case SUPERIO_IVAR_DMA: 741 *result = dinfo->dma; 742 break; 743 default: 744 return (ENOENT); 745 } 746 return (0); 747 } 748 749 static int 750 superio_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 751 { 752 753 switch (which) { 754 case SUPERIO_IVAR_LDN: 755 case SUPERIO_IVAR_TYPE: 756 case SUPERIO_IVAR_IOBASE: 757 case SUPERIO_IVAR_IOBASE2: 758 case SUPERIO_IVAR_IRQ: 759 case SUPERIO_IVAR_DMA: 760 return (EINVAL); 761 default: 762 return (ENOENT); 763 } 764 } 765 766 static struct resource_list * 767 superio_get_resource_list(device_t dev, device_t child) 768 { 769 struct superio_devinfo *dinfo = device_get_ivars(child); 770 771 return (&dinfo->resources); 772 } 773 774 static int 775 superio_printf(struct superio_devinfo *dinfo, const char *fmt, ...) 776 { 777 va_list ap; 778 int retval; 779 780 retval = printf("superio:%s@ldn%0x2x: ", 781 devtype_to_str(dinfo->type), dinfo->ldn); 782 va_start(ap, fmt); 783 retval += vprintf(fmt, ap); 784 va_end(ap); 785 return (retval); 786 } 787 788 static void 789 superio_child_detached(device_t dev, device_t child) 790 { 791 struct superio_devinfo *dinfo; 792 struct resource_list *rl; 793 794 dinfo = device_get_ivars(child); 795 rl = &dinfo->resources; 796 797 if (resource_list_release_active(rl, dev, child, SYS_RES_IRQ) != 0) 798 superio_printf(dinfo, "Device leaked IRQ resources\n"); 799 if (resource_list_release_active(rl, dev, child, SYS_RES_MEMORY) != 0) 800 superio_printf(dinfo, "Device leaked memory resources\n"); 801 if (resource_list_release_active(rl, dev, child, SYS_RES_IOPORT) != 0) 802 superio_printf(dinfo, "Device leaked I/O resources\n"); 803 } 804 805 static int 806 superio_child_location(device_t parent, device_t child, struct sbuf *sb) 807 { 808 uint8_t ldn; 809 810 ldn = superio_get_ldn(child); 811 sbuf_printf(sb, "ldn=0x%02x", ldn); 812 return (0); 813 } 814 815 static int 816 superio_child_pnp(device_t parent, device_t child, struct sbuf *sb) 817 { 818 superio_dev_type_t type; 819 820 type = superio_get_type(child); 821 sbuf_printf(sb, "type=%s", devtype_to_str(type)); 822 return (0); 823 } 824 825 static int 826 superio_print_child(device_t parent, device_t child) 827 { 828 superio_dev_type_t type; 829 uint8_t ldn; 830 int retval; 831 832 ldn = superio_get_ldn(child); 833 type = superio_get_type(child); 834 835 retval = bus_print_child_header(parent, child); 836 retval += printf(" at %s ldn 0x%02x", devtype_to_str(type), ldn); 837 retval += bus_print_child_footer(parent, child); 838 839 return (retval); 840 } 841 842 superio_vendor_t 843 superio_vendor(device_t dev) 844 { 845 device_t sio_dev = device_get_parent(dev); 846 struct siosc *sc = device_get_softc(sio_dev); 847 848 return (sc->vendor); 849 } 850 851 uint16_t 852 superio_devid(device_t dev) 853 { 854 device_t sio_dev = device_get_parent(dev); 855 struct siosc *sc = device_get_softc(sio_dev); 856 857 return (sc->devid); 858 } 859 860 uint8_t 861 superio_revid(device_t dev) 862 { 863 device_t sio_dev = device_get_parent(dev); 864 struct siosc *sc = device_get_softc(sio_dev); 865 866 return (sc->revid); 867 } 868 869 uint8_t 870 superio_read(device_t dev, uint8_t reg) 871 { 872 device_t sio_dev = device_get_parent(dev); 873 struct siosc *sc = device_get_softc(sio_dev); 874 struct superio_devinfo *dinfo = device_get_ivars(dev); 875 uint8_t v; 876 877 sio_conf_enter(sc); 878 v = sio_ldn_read(sc, dinfo->ldn, reg); 879 sio_conf_exit(sc); 880 return (v); 881 } 882 883 void 884 superio_write(device_t dev, uint8_t reg, uint8_t val) 885 { 886 device_t sio_dev = device_get_parent(dev); 887 struct siosc *sc = device_get_softc(sio_dev); 888 struct superio_devinfo *dinfo = device_get_ivars(dev); 889 890 sio_conf_enter(sc); 891 sio_ldn_write(sc, dinfo->ldn, reg, val); 892 sio_conf_exit(sc); 893 } 894 895 bool 896 superio_dev_enabled(device_t dev, uint8_t mask) 897 { 898 device_t sio_dev = device_get_parent(dev); 899 struct siosc *sc = device_get_softc(sio_dev); 900 struct superio_devinfo *dinfo = device_get_ivars(dev); 901 uint8_t v; 902 903 /* GPIO device is always active in ITE chips. */ 904 if (sc->vendor == SUPERIO_VENDOR_ITE && dinfo->ldn == 7) 905 return (true); 906 907 v = superio_read(dev, sc->enable_reg); 908 return ((v & mask) != 0); 909 } 910 911 void 912 superio_dev_enable(device_t dev, uint8_t mask) 913 { 914 device_t sio_dev = device_get_parent(dev); 915 struct siosc *sc = device_get_softc(sio_dev); 916 struct superio_devinfo *dinfo = device_get_ivars(dev); 917 uint8_t v; 918 919 /* GPIO device is always active in ITE chips. */ 920 if (sc->vendor == SUPERIO_VENDOR_ITE && dinfo->ldn == 7) 921 return; 922 923 sio_conf_enter(sc); 924 v = sio_ldn_read(sc, dinfo->ldn, sc->enable_reg); 925 v |= mask; 926 sio_ldn_write(sc, dinfo->ldn, sc->enable_reg, v); 927 sio_conf_exit(sc); 928 } 929 930 void 931 superio_dev_disable(device_t dev, uint8_t mask) 932 { 933 device_t sio_dev = device_get_parent(dev); 934 struct siosc *sc = device_get_softc(sio_dev); 935 struct superio_devinfo *dinfo = device_get_ivars(dev); 936 uint8_t v; 937 938 /* GPIO device is always active in ITE chips. */ 939 if (sc->vendor == SUPERIO_VENDOR_ITE && dinfo->ldn == 7) 940 return; 941 942 sio_conf_enter(sc); 943 v = sio_ldn_read(sc, dinfo->ldn, sc->enable_reg); 944 v &= ~mask; 945 sio_ldn_write(sc, dinfo->ldn, sc->enable_reg, v); 946 sio_conf_exit(sc); 947 } 948 949 device_t 950 superio_find_dev(device_t superio, superio_dev_type_t type, int ldn) 951 { 952 struct siosc *sc = device_get_softc(superio); 953 struct superio_devinfo *dinfo; 954 955 if (ldn < -1 || ldn > UINT8_MAX) 956 return (NULL); /* ERANGE */ 957 if (type == SUPERIO_DEV_NONE && ldn == -1) 958 return (NULL); /* EINVAL */ 959 960 STAILQ_FOREACH(dinfo, &sc->devlist, link) { 961 if (ldn != -1 && dinfo->ldn != ldn) 962 continue; 963 if (type != SUPERIO_DEV_NONE && dinfo->type != type) 964 continue; 965 return (dinfo->dev); 966 } 967 return (NULL); 968 } 969 970 static int 971 superio_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flags, 972 struct thread *td) 973 { 974 struct siosc *sc; 975 struct superiocmd *s; 976 977 sc = dev->si_drv1; 978 s = (struct superiocmd *)data; 979 switch (cmd) { 980 case SUPERIO_CR_READ: 981 sio_conf_enter(sc); 982 s->val = sio_ldn_read(sc, s->ldn, s->cr); 983 sio_conf_exit(sc); 984 return (0); 985 case SUPERIO_CR_WRITE: 986 sio_conf_enter(sc); 987 sio_ldn_write(sc, s->ldn, s->cr, s->val); 988 sio_conf_exit(sc); 989 return (0); 990 default: 991 return (ENOTTY); 992 } 993 } 994 995 static device_method_t superio_methods[] = { 996 DEVMETHOD(device_identify, superio_identify), 997 DEVMETHOD(device_probe, superio_probe), 998 DEVMETHOD(device_attach, superio_attach), 999 DEVMETHOD(device_detach, superio_detach), 1000 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1001 DEVMETHOD(device_suspend, bus_generic_suspend), 1002 DEVMETHOD(device_resume, bus_generic_resume), 1003 1004 DEVMETHOD(bus_add_child, superio_add_child), 1005 DEVMETHOD(bus_child_detached, superio_child_detached), 1006 DEVMETHOD(bus_child_location, superio_child_location), 1007 DEVMETHOD(bus_child_pnpinfo, superio_child_pnp), 1008 DEVMETHOD(bus_print_child, superio_print_child), 1009 DEVMETHOD(bus_read_ivar, superio_read_ivar), 1010 DEVMETHOD(bus_write_ivar, superio_write_ivar), 1011 DEVMETHOD(bus_get_resource_list, superio_get_resource_list), 1012 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource), 1013 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), 1014 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource), 1015 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 1016 DEVMETHOD(bus_delete_resource, bus_generic_rl_delete_resource), 1017 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 1018 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 1019 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 1020 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 1021 1022 DEVMETHOD_END 1023 }; 1024 1025 static driver_t superio_driver = { 1026 "superio", 1027 superio_methods, 1028 sizeof(struct siosc) 1029 }; 1030 1031 DRIVER_MODULE(superio, isa, superio_driver, 0, 0); 1032 MODULE_VERSION(superio, 1); 1033