1 /* $FreeBSD$ */ 2 /*- 3 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 4 * 5 * Copyright (c) 2008 Hans Petter Selasky. 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 29 #ifdef USB_GLOBAL_INCLUDE_FILE 30 #include USB_GLOBAL_INCLUDE_FILE 31 #else 32 #include "opt_ddb.h" 33 34 #include <sys/stdint.h> 35 #include <sys/stddef.h> 36 #include <sys/param.h> 37 #include <sys/queue.h> 38 #include <sys/types.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/bus.h> 42 #include <sys/module.h> 43 #include <sys/lock.h> 44 #include <sys/mutex.h> 45 #include <sys/condvar.h> 46 #include <sys/sysctl.h> 47 #include <sys/sx.h> 48 #include <sys/unistd.h> 49 #include <sys/callout.h> 50 #include <sys/malloc.h> 51 #include <sys/priv.h> 52 53 #include <dev/usb/usb.h> 54 #include <dev/usb/usbdi.h> 55 56 #define USB_DEBUG_VAR usb_ctrl_debug 57 58 #include <dev/usb/usb_core.h> 59 #include <dev/usb/usb_debug.h> 60 #include <dev/usb/usb_process.h> 61 #include <dev/usb/usb_busdma.h> 62 #include <dev/usb/usb_dynamic.h> 63 #include <dev/usb/usb_device.h> 64 #include <dev/usb/usb_dev.h> 65 #include <dev/usb/usb_hub.h> 66 67 #include <dev/usb/usb_controller.h> 68 #include <dev/usb/usb_bus.h> 69 #include <dev/usb/usb_pf.h> 70 #include "usb_if.h" 71 #endif /* USB_GLOBAL_INCLUDE_FILE */ 72 73 /* function prototypes */ 74 75 static device_probe_t usb_probe; 76 static device_attach_t usb_attach; 77 static device_detach_t usb_detach; 78 static device_suspend_t usb_suspend; 79 static device_resume_t usb_resume; 80 static device_shutdown_t usb_shutdown; 81 82 static void usb_attach_sub(device_t, struct usb_bus *); 83 84 /* static variables */ 85 86 #ifdef USB_DEBUG 87 static int usb_ctrl_debug = 0; 88 89 static SYSCTL_NODE(_hw_usb, OID_AUTO, ctrl, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 90 "USB controller"); 91 SYSCTL_INT(_hw_usb_ctrl, OID_AUTO, debug, CTLFLAG_RWTUN, &usb_ctrl_debug, 0, 92 "Debug level"); 93 #endif 94 95 #if USB_HAVE_ROOT_MOUNT_HOLD 96 static int usb_no_boot_wait = 0; 97 SYSCTL_INT(_hw_usb, OID_AUTO, no_boot_wait, CTLFLAG_RDTUN, &usb_no_boot_wait, 0, 98 "No USB device enumerate waiting at boot."); 99 #endif 100 101 static int usb_no_suspend_wait = 0; 102 SYSCTL_INT(_hw_usb, OID_AUTO, no_suspend_wait, CTLFLAG_RWTUN, 103 &usb_no_suspend_wait, 0, "No USB device waiting at system suspend."); 104 105 static int usb_no_shutdown_wait = 0; 106 SYSCTL_INT(_hw_usb, OID_AUTO, no_shutdown_wait, CTLFLAG_RWTUN, 107 &usb_no_shutdown_wait, 0, "No USB device waiting at system shutdown."); 108 109 static devclass_t usb_devclass; 110 111 static device_method_t usb_methods[] = { 112 DEVMETHOD(device_probe, usb_probe), 113 DEVMETHOD(device_attach, usb_attach), 114 DEVMETHOD(device_detach, usb_detach), 115 DEVMETHOD(device_suspend, usb_suspend), 116 DEVMETHOD(device_resume, usb_resume), 117 DEVMETHOD(device_shutdown, usb_shutdown), 118 119 DEVMETHOD_END 120 }; 121 122 static driver_t usb_driver = { 123 .name = "usbus", 124 .methods = usb_methods, 125 .size = 0, 126 }; 127 128 /* Host Only Drivers */ 129 DRIVER_MODULE(usbus, ohci, usb_driver, usb_devclass, 0, 0); 130 DRIVER_MODULE(usbus, uhci, usb_driver, usb_devclass, 0, 0); 131 DRIVER_MODULE(usbus, ehci, usb_driver, usb_devclass, 0, 0); 132 DRIVER_MODULE(usbus, xhci, usb_driver, usb_devclass, 0, 0); 133 134 /* Device Only Drivers */ 135 DRIVER_MODULE(usbus, musbotg, usb_driver, usb_devclass, 0, 0); 136 DRIVER_MODULE(usbus, uss820dci, usb_driver, usb_devclass, 0, 0); 137 DRIVER_MODULE(usbus, octusb, usb_driver, usb_devclass, 0, 0); 138 139 /* Dual Mode Drivers */ 140 DRIVER_MODULE(usbus, dwcotg, usb_driver, usb_devclass, 0, 0); 141 DRIVER_MODULE(usbus, saf1761otg, usb_driver, usb_devclass, 0, 0); 142 143 /*------------------------------------------------------------------------* 144 * usb_probe 145 * 146 * This function is called from "{ehci,ohci,uhci}_pci_attach()". 147 *------------------------------------------------------------------------*/ 148 static int 149 usb_probe(device_t dev) 150 { 151 DPRINTF("\n"); 152 return (0); 153 } 154 155 #if USB_HAVE_ROOT_MOUNT_HOLD 156 static void 157 usb_root_mount_rel(struct usb_bus *bus) 158 { 159 if (bus->bus_roothold != NULL) { 160 DPRINTF("Releasing root mount hold %p\n", bus->bus_roothold); 161 root_mount_rel(bus->bus_roothold); 162 bus->bus_roothold = NULL; 163 } 164 } 165 #endif 166 167 /*------------------------------------------------------------------------* 168 * usb_attach 169 *------------------------------------------------------------------------*/ 170 static int 171 usb_attach(device_t dev) 172 { 173 struct usb_bus *bus = device_get_ivars(dev); 174 175 DPRINTF("\n"); 176 177 if (bus == NULL) { 178 device_printf(dev, "USB device has no ivars\n"); 179 return (ENXIO); 180 } 181 182 #if USB_HAVE_ROOT_MOUNT_HOLD 183 if (usb_no_boot_wait == 0) { 184 /* delay vfs_mountroot until the bus is explored */ 185 bus->bus_roothold = root_mount_hold(device_get_nameunit(dev)); 186 } 187 #endif 188 usb_attach_sub(dev, bus); 189 190 return (0); /* return success */ 191 } 192 193 /*------------------------------------------------------------------------* 194 * usb_detach 195 *------------------------------------------------------------------------*/ 196 static int 197 usb_detach(device_t dev) 198 { 199 struct usb_bus *bus = device_get_softc(dev); 200 201 DPRINTF("\n"); 202 203 if (bus == NULL) { 204 /* was never setup properly */ 205 return (0); 206 } 207 /* Stop power watchdog */ 208 usb_callout_drain(&bus->power_wdog); 209 210 #if USB_HAVE_ROOT_MOUNT_HOLD 211 /* Let the USB explore process detach all devices. */ 212 usb_root_mount_rel(bus); 213 #endif 214 215 USB_BUS_LOCK(bus); 216 217 /* Queue detach job */ 218 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), 219 &bus->detach_msg[0], &bus->detach_msg[1]); 220 221 /* Wait for detach to complete */ 222 usb_proc_mwait(USB_BUS_EXPLORE_PROC(bus), 223 &bus->detach_msg[0], &bus->detach_msg[1]); 224 225 #if USB_HAVE_UGEN 226 /* Wait for cleanup to complete */ 227 usb_proc_mwait(USB_BUS_EXPLORE_PROC(bus), 228 &bus->cleanup_msg[0], &bus->cleanup_msg[1]); 229 #endif 230 USB_BUS_UNLOCK(bus); 231 232 #if USB_HAVE_PER_BUS_PROCESS 233 /* Get rid of USB callback processes */ 234 235 usb_proc_free(USB_BUS_GIANT_PROC(bus)); 236 usb_proc_free(USB_BUS_NON_GIANT_ISOC_PROC(bus)); 237 usb_proc_free(USB_BUS_NON_GIANT_BULK_PROC(bus)); 238 239 /* Get rid of USB explore process */ 240 241 usb_proc_free(USB_BUS_EXPLORE_PROC(bus)); 242 243 /* Get rid of control transfer process */ 244 245 usb_proc_free(USB_BUS_CONTROL_XFER_PROC(bus)); 246 #endif 247 248 #if USB_HAVE_PF 249 usbpf_detach(bus); 250 #endif 251 return (0); 252 } 253 254 /*------------------------------------------------------------------------* 255 * usb_suspend 256 *------------------------------------------------------------------------*/ 257 static int 258 usb_suspend(device_t dev) 259 { 260 struct usb_bus *bus = device_get_softc(dev); 261 262 DPRINTF("\n"); 263 264 if (bus == NULL) { 265 /* was never setup properly */ 266 return (0); 267 } 268 269 USB_BUS_LOCK(bus); 270 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), 271 &bus->suspend_msg[0], &bus->suspend_msg[1]); 272 if (usb_no_suspend_wait == 0) { 273 /* wait for suspend callback to be executed */ 274 usb_proc_mwait(USB_BUS_EXPLORE_PROC(bus), 275 &bus->suspend_msg[0], &bus->suspend_msg[1]); 276 } 277 USB_BUS_UNLOCK(bus); 278 279 return (0); 280 } 281 282 /*------------------------------------------------------------------------* 283 * usb_resume 284 *------------------------------------------------------------------------*/ 285 static int 286 usb_resume(device_t dev) 287 { 288 struct usb_bus *bus = device_get_softc(dev); 289 290 DPRINTF("\n"); 291 292 if (bus == NULL) { 293 /* was never setup properly */ 294 return (0); 295 } 296 297 USB_BUS_LOCK(bus); 298 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), 299 &bus->resume_msg[0], &bus->resume_msg[1]); 300 USB_BUS_UNLOCK(bus); 301 302 return (0); 303 } 304 305 /*------------------------------------------------------------------------* 306 * usb_bus_reset_async_locked 307 *------------------------------------------------------------------------*/ 308 void 309 usb_bus_reset_async_locked(struct usb_bus *bus) 310 { 311 USB_BUS_LOCK_ASSERT(bus, MA_OWNED); 312 313 DPRINTF("\n"); 314 315 if (bus->reset_msg[0].hdr.pm_qentry.tqe_prev != NULL || 316 bus->reset_msg[1].hdr.pm_qentry.tqe_prev != NULL) { 317 DPRINTF("Reset already pending\n"); 318 return; 319 } 320 321 device_printf(bus->parent, "Resetting controller\n"); 322 323 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), 324 &bus->reset_msg[0], &bus->reset_msg[1]); 325 } 326 327 /*------------------------------------------------------------------------* 328 * usb_shutdown 329 *------------------------------------------------------------------------*/ 330 static int 331 usb_shutdown(device_t dev) 332 { 333 struct usb_bus *bus = device_get_softc(dev); 334 335 DPRINTF("\n"); 336 337 if (bus == NULL) { 338 /* was never setup properly */ 339 return (0); 340 } 341 342 DPRINTF("%s: Controller shutdown\n", device_get_nameunit(bus->bdev)); 343 344 USB_BUS_LOCK(bus); 345 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), 346 &bus->shutdown_msg[0], &bus->shutdown_msg[1]); 347 if (usb_no_shutdown_wait == 0) { 348 /* wait for shutdown callback to be executed */ 349 usb_proc_mwait(USB_BUS_EXPLORE_PROC(bus), 350 &bus->shutdown_msg[0], &bus->shutdown_msg[1]); 351 } 352 USB_BUS_UNLOCK(bus); 353 354 DPRINTF("%s: Controller shutdown complete\n", 355 device_get_nameunit(bus->bdev)); 356 357 return (0); 358 } 359 360 /*------------------------------------------------------------------------* 361 * usb_bus_explore 362 * 363 * This function is used to explore the device tree from the root. 364 *------------------------------------------------------------------------*/ 365 static void 366 usb_bus_explore(struct usb_proc_msg *pm) 367 { 368 struct usb_bus *bus; 369 struct usb_device *udev; 370 371 bus = ((struct usb_bus_msg *)pm)->bus; 372 udev = bus->devices[USB_ROOT_HUB_ADDR]; 373 374 if (bus->no_explore != 0) 375 return; 376 377 if (udev != NULL) { 378 USB_BUS_UNLOCK(bus); 379 uhub_explore_handle_re_enumerate(udev); 380 USB_BUS_LOCK(bus); 381 } 382 383 if (udev != NULL && udev->hub != NULL) { 384 if (bus->do_probe) { 385 bus->do_probe = 0; 386 bus->driver_added_refcount++; 387 } 388 if (bus->driver_added_refcount == 0) { 389 /* avoid zero, hence that is memory default */ 390 bus->driver_added_refcount = 1; 391 } 392 393 #ifdef DDB 394 /* 395 * The following three lines of code are only here to 396 * recover from DDB: 397 */ 398 usb_proc_rewakeup(USB_BUS_CONTROL_XFER_PROC(bus)); 399 usb_proc_rewakeup(USB_BUS_GIANT_PROC(bus)); 400 usb_proc_rewakeup(USB_BUS_NON_GIANT_ISOC_PROC(bus)); 401 usb_proc_rewakeup(USB_BUS_NON_GIANT_BULK_PROC(bus)); 402 #endif 403 404 USB_BUS_UNLOCK(bus); 405 406 #if USB_HAVE_POWERD 407 /* 408 * First update the USB power state! 409 */ 410 usb_bus_powerd(bus); 411 #endif 412 /* Explore the Root USB HUB. */ 413 (udev->hub->explore) (udev); 414 USB_BUS_LOCK(bus); 415 } 416 #if USB_HAVE_ROOT_MOUNT_HOLD 417 usb_root_mount_rel(bus); 418 #endif 419 } 420 421 /*------------------------------------------------------------------------* 422 * usb_bus_detach 423 * 424 * This function is used to detach the device tree from the root. 425 *------------------------------------------------------------------------*/ 426 static void 427 usb_bus_detach(struct usb_proc_msg *pm) 428 { 429 struct usb_bus *bus; 430 struct usb_device *udev; 431 device_t dev; 432 433 bus = ((struct usb_bus_msg *)pm)->bus; 434 udev = bus->devices[USB_ROOT_HUB_ADDR]; 435 dev = bus->bdev; 436 /* clear the softc */ 437 device_set_softc(dev, NULL); 438 USB_BUS_UNLOCK(bus); 439 440 /* detach children first */ 441 mtx_lock(&Giant); 442 bus_generic_detach(dev); 443 mtx_unlock(&Giant); 444 445 /* 446 * Free USB device and all subdevices, if any. 447 */ 448 usb_free_device(udev, 0); 449 450 USB_BUS_LOCK(bus); 451 /* clear bdev variable last */ 452 bus->bdev = NULL; 453 } 454 455 /*------------------------------------------------------------------------* 456 * usb_bus_suspend 457 * 458 * This function is used to suspend the USB controller. 459 *------------------------------------------------------------------------*/ 460 static void 461 usb_bus_suspend(struct usb_proc_msg *pm) 462 { 463 struct usb_bus *bus; 464 struct usb_device *udev; 465 usb_error_t err; 466 uint8_t do_unlock; 467 468 DPRINTF("\n"); 469 470 bus = ((struct usb_bus_msg *)pm)->bus; 471 udev = bus->devices[USB_ROOT_HUB_ADDR]; 472 473 if (udev == NULL || bus->bdev == NULL) 474 return; 475 476 USB_BUS_UNLOCK(bus); 477 478 /* 479 * We use the shutdown event here because the suspend and 480 * resume events are reserved for the USB port suspend and 481 * resume. The USB system suspend is implemented like full 482 * shutdown and all connected USB devices will be disconnected 483 * subsequently. At resume all USB devices will be 484 * re-connected again. 485 */ 486 487 bus_generic_shutdown(bus->bdev); 488 489 do_unlock = usbd_enum_lock(udev); 490 491 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX); 492 if (err) 493 device_printf(bus->bdev, "Could not unconfigure root HUB\n"); 494 495 USB_BUS_LOCK(bus); 496 bus->hw_power_state = 0; 497 bus->no_explore = 1; 498 USB_BUS_UNLOCK(bus); 499 500 if (bus->methods->set_hw_power != NULL) 501 (bus->methods->set_hw_power) (bus); 502 503 if (bus->methods->set_hw_power_sleep != NULL) 504 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SUSPEND); 505 506 if (do_unlock) 507 usbd_enum_unlock(udev); 508 509 USB_BUS_LOCK(bus); 510 } 511 512 /*------------------------------------------------------------------------* 513 * usb_bus_resume 514 * 515 * This function is used to resume the USB controller. 516 *------------------------------------------------------------------------*/ 517 static void 518 usb_bus_resume(struct usb_proc_msg *pm) 519 { 520 struct usb_bus *bus; 521 struct usb_device *udev; 522 usb_error_t err; 523 uint8_t do_unlock; 524 525 DPRINTF("\n"); 526 527 bus = ((struct usb_bus_msg *)pm)->bus; 528 udev = bus->devices[USB_ROOT_HUB_ADDR]; 529 530 if (udev == NULL || bus->bdev == NULL) 531 return; 532 533 USB_BUS_UNLOCK(bus); 534 535 do_unlock = usbd_enum_lock(udev); 536 #if 0 537 DEVMETHOD(usb_take_controller, NULL); /* dummy */ 538 #endif 539 USB_TAKE_CONTROLLER(device_get_parent(bus->bdev)); 540 541 USB_BUS_LOCK(bus); 542 bus->hw_power_state = 543 USB_HW_POWER_CONTROL | 544 USB_HW_POWER_BULK | 545 USB_HW_POWER_INTERRUPT | 546 USB_HW_POWER_ISOC | 547 USB_HW_POWER_NON_ROOT_HUB; 548 bus->no_explore = 0; 549 USB_BUS_UNLOCK(bus); 550 551 if (bus->methods->set_hw_power_sleep != NULL) 552 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_RESUME); 553 554 if (bus->methods->set_hw_power != NULL) 555 (bus->methods->set_hw_power) (bus); 556 557 /* restore USB configuration to index 0 */ 558 err = usbd_set_config_index(udev, 0); 559 if (err) 560 device_printf(bus->bdev, "Could not configure root HUB\n"); 561 562 /* probe and attach */ 563 err = usb_probe_and_attach(udev, USB_IFACE_INDEX_ANY); 564 if (err) { 565 device_printf(bus->bdev, "Could not probe and " 566 "attach root HUB\n"); 567 } 568 569 if (do_unlock) 570 usbd_enum_unlock(udev); 571 572 USB_BUS_LOCK(bus); 573 } 574 575 /*------------------------------------------------------------------------* 576 * usb_bus_reset 577 * 578 * This function is used to reset the USB controller. 579 *------------------------------------------------------------------------*/ 580 static void 581 usb_bus_reset(struct usb_proc_msg *pm) 582 { 583 struct usb_bus *bus; 584 585 DPRINTF("\n"); 586 587 bus = ((struct usb_bus_msg *)pm)->bus; 588 589 if (bus->bdev == NULL || bus->no_explore != 0) 590 return; 591 592 /* a suspend and resume will reset the USB controller */ 593 usb_bus_suspend(pm); 594 usb_bus_resume(pm); 595 } 596 597 /*------------------------------------------------------------------------* 598 * usb_bus_shutdown 599 * 600 * This function is used to shutdown the USB controller. 601 *------------------------------------------------------------------------*/ 602 static void 603 usb_bus_shutdown(struct usb_proc_msg *pm) 604 { 605 struct usb_bus *bus; 606 struct usb_device *udev; 607 usb_error_t err; 608 uint8_t do_unlock; 609 610 bus = ((struct usb_bus_msg *)pm)->bus; 611 udev = bus->devices[USB_ROOT_HUB_ADDR]; 612 613 if (udev == NULL || bus->bdev == NULL) 614 return; 615 616 USB_BUS_UNLOCK(bus); 617 618 bus_generic_shutdown(bus->bdev); 619 620 do_unlock = usbd_enum_lock(udev); 621 622 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX); 623 if (err) 624 device_printf(bus->bdev, "Could not unconfigure root HUB\n"); 625 626 USB_BUS_LOCK(bus); 627 bus->hw_power_state = 0; 628 bus->no_explore = 1; 629 USB_BUS_UNLOCK(bus); 630 631 if (bus->methods->set_hw_power != NULL) 632 (bus->methods->set_hw_power) (bus); 633 634 if (bus->methods->set_hw_power_sleep != NULL) 635 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SHUTDOWN); 636 637 if (do_unlock) 638 usbd_enum_unlock(udev); 639 640 USB_BUS_LOCK(bus); 641 } 642 643 /*------------------------------------------------------------------------* 644 * usb_bus_cleanup 645 * 646 * This function is used to cleanup leftover USB character devices. 647 *------------------------------------------------------------------------*/ 648 #if USB_HAVE_UGEN 649 static void 650 usb_bus_cleanup(struct usb_proc_msg *pm) 651 { 652 struct usb_bus *bus; 653 struct usb_fs_privdata *pd; 654 655 bus = ((struct usb_bus_msg *)pm)->bus; 656 657 while ((pd = LIST_FIRST(&bus->pd_cleanup_list)) != NULL) { 658 LIST_REMOVE(pd, pd_next); 659 USB_BUS_UNLOCK(bus); 660 661 usb_destroy_dev_sync(pd); 662 663 USB_BUS_LOCK(bus); 664 } 665 } 666 #endif 667 668 static void 669 usb_power_wdog(void *arg) 670 { 671 struct usb_bus *bus = arg; 672 673 USB_BUS_LOCK_ASSERT(bus, MA_OWNED); 674 675 usb_callout_reset(&bus->power_wdog, 676 4 * hz, usb_power_wdog, arg); 677 678 #ifdef DDB 679 /* 680 * The following line of code is only here to recover from 681 * DDB: 682 */ 683 usb_proc_rewakeup(USB_BUS_EXPLORE_PROC(bus)); /* recover from DDB */ 684 #endif 685 686 #if USB_HAVE_POWERD 687 USB_BUS_UNLOCK(bus); 688 689 usb_bus_power_update(bus); 690 691 USB_BUS_LOCK(bus); 692 #endif 693 } 694 695 /*------------------------------------------------------------------------* 696 * usb_bus_attach 697 * 698 * This function attaches USB in context of the explore thread. 699 *------------------------------------------------------------------------*/ 700 static void 701 usb_bus_attach(struct usb_proc_msg *pm) 702 { 703 struct usb_bus *bus; 704 struct usb_device *child; 705 device_t dev; 706 usb_error_t err; 707 enum usb_dev_speed speed; 708 709 bus = ((struct usb_bus_msg *)pm)->bus; 710 dev = bus->bdev; 711 712 DPRINTF("\n"); 713 714 switch (bus->usbrev) { 715 case USB_REV_1_0: 716 speed = USB_SPEED_FULL; 717 device_printf(bus->bdev, "12Mbps Full Speed USB v1.0\n"); 718 break; 719 720 case USB_REV_1_1: 721 speed = USB_SPEED_FULL; 722 device_printf(bus->bdev, "12Mbps Full Speed USB v1.1\n"); 723 break; 724 725 case USB_REV_2_0: 726 speed = USB_SPEED_HIGH; 727 device_printf(bus->bdev, "480Mbps High Speed USB v2.0\n"); 728 break; 729 730 case USB_REV_2_5: 731 speed = USB_SPEED_VARIABLE; 732 device_printf(bus->bdev, "480Mbps Wireless USB v2.5\n"); 733 break; 734 735 case USB_REV_3_0: 736 speed = USB_SPEED_SUPER; 737 device_printf(bus->bdev, "5.0Gbps Super Speed USB v3.0\n"); 738 break; 739 740 default: 741 device_printf(bus->bdev, "Unsupported USB revision\n"); 742 #if USB_HAVE_ROOT_MOUNT_HOLD 743 usb_root_mount_rel(bus); 744 #endif 745 return; 746 } 747 748 /* default power_mask value */ 749 bus->hw_power_state = 750 USB_HW_POWER_CONTROL | 751 USB_HW_POWER_BULK | 752 USB_HW_POWER_INTERRUPT | 753 USB_HW_POWER_ISOC | 754 USB_HW_POWER_NON_ROOT_HUB; 755 756 USB_BUS_UNLOCK(bus); 757 758 /* make sure power is set at least once */ 759 760 if (bus->methods->set_hw_power != NULL) { 761 (bus->methods->set_hw_power) (bus); 762 } 763 764 /* allocate the Root USB device */ 765 766 child = usb_alloc_device(bus->bdev, bus, NULL, 0, 0, 1, 767 speed, USB_MODE_HOST); 768 if (child) { 769 err = usb_probe_and_attach(child, 770 USB_IFACE_INDEX_ANY); 771 if (!err) { 772 if ((bus->devices[USB_ROOT_HUB_ADDR] == NULL) || 773 (bus->devices[USB_ROOT_HUB_ADDR]->hub == NULL)) { 774 err = USB_ERR_NO_ROOT_HUB; 775 } 776 } 777 } else { 778 err = USB_ERR_NOMEM; 779 } 780 781 USB_BUS_LOCK(bus); 782 783 if (err) { 784 device_printf(bus->bdev, "Root HUB problem, error=%s\n", 785 usbd_errstr(err)); 786 #if USB_HAVE_ROOT_MOUNT_HOLD 787 usb_root_mount_rel(bus); 788 #endif 789 } 790 791 /* set softc - we are ready */ 792 device_set_softc(dev, bus); 793 794 /* start watchdog */ 795 usb_power_wdog(bus); 796 } 797 798 /*------------------------------------------------------------------------* 799 * usb_attach_sub 800 * 801 * This function creates a thread which runs the USB attach code. 802 *------------------------------------------------------------------------*/ 803 static void 804 usb_attach_sub(device_t dev, struct usb_bus *bus) 805 { 806 mtx_lock(&Giant); 807 if (usb_devclass_ptr == NULL) 808 usb_devclass_ptr = devclass_find("usbus"); 809 mtx_unlock(&Giant); 810 811 #if USB_HAVE_PF 812 usbpf_attach(bus); 813 #endif 814 /* Initialise USB process messages */ 815 bus->explore_msg[0].hdr.pm_callback = &usb_bus_explore; 816 bus->explore_msg[0].bus = bus; 817 bus->explore_msg[1].hdr.pm_callback = &usb_bus_explore; 818 bus->explore_msg[1].bus = bus; 819 820 bus->detach_msg[0].hdr.pm_callback = &usb_bus_detach; 821 bus->detach_msg[0].bus = bus; 822 bus->detach_msg[1].hdr.pm_callback = &usb_bus_detach; 823 bus->detach_msg[1].bus = bus; 824 825 bus->attach_msg[0].hdr.pm_callback = &usb_bus_attach; 826 bus->attach_msg[0].bus = bus; 827 bus->attach_msg[1].hdr.pm_callback = &usb_bus_attach; 828 bus->attach_msg[1].bus = bus; 829 830 bus->suspend_msg[0].hdr.pm_callback = &usb_bus_suspend; 831 bus->suspend_msg[0].bus = bus; 832 bus->suspend_msg[1].hdr.pm_callback = &usb_bus_suspend; 833 bus->suspend_msg[1].bus = bus; 834 835 bus->resume_msg[0].hdr.pm_callback = &usb_bus_resume; 836 bus->resume_msg[0].bus = bus; 837 bus->resume_msg[1].hdr.pm_callback = &usb_bus_resume; 838 bus->resume_msg[1].bus = bus; 839 840 bus->reset_msg[0].hdr.pm_callback = &usb_bus_reset; 841 bus->reset_msg[0].bus = bus; 842 bus->reset_msg[1].hdr.pm_callback = &usb_bus_reset; 843 bus->reset_msg[1].bus = bus; 844 845 bus->shutdown_msg[0].hdr.pm_callback = &usb_bus_shutdown; 846 bus->shutdown_msg[0].bus = bus; 847 bus->shutdown_msg[1].hdr.pm_callback = &usb_bus_shutdown; 848 bus->shutdown_msg[1].bus = bus; 849 850 #if USB_HAVE_UGEN 851 LIST_INIT(&bus->pd_cleanup_list); 852 bus->cleanup_msg[0].hdr.pm_callback = &usb_bus_cleanup; 853 bus->cleanup_msg[0].bus = bus; 854 bus->cleanup_msg[1].hdr.pm_callback = &usb_bus_cleanup; 855 bus->cleanup_msg[1].bus = bus; 856 #endif 857 858 #if USB_HAVE_PER_BUS_PROCESS 859 /* Create USB explore and callback processes */ 860 861 if (usb_proc_create(USB_BUS_GIANT_PROC(bus), 862 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_MED)) { 863 device_printf(dev, "WARNING: Creation of USB Giant " 864 "callback process failed.\n"); 865 } else if (usb_proc_create(USB_BUS_NON_GIANT_ISOC_PROC(bus), 866 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_HIGHEST)) { 867 device_printf(dev, "WARNING: Creation of USB non-Giant ISOC " 868 "callback process failed.\n"); 869 } else if (usb_proc_create(USB_BUS_NON_GIANT_BULK_PROC(bus), 870 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_HIGH)) { 871 device_printf(dev, "WARNING: Creation of USB non-Giant BULK " 872 "callback process failed.\n"); 873 } else if (usb_proc_create(USB_BUS_EXPLORE_PROC(bus), 874 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_MED)) { 875 device_printf(dev, "WARNING: Creation of USB explore " 876 "process failed.\n"); 877 } else if (usb_proc_create(USB_BUS_CONTROL_XFER_PROC(bus), 878 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_MED)) { 879 device_printf(dev, "WARNING: Creation of USB control transfer " 880 "process failed.\n"); 881 } else 882 #endif 883 { 884 /* Get final attach going */ 885 USB_BUS_LOCK(bus); 886 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), 887 &bus->attach_msg[0], &bus->attach_msg[1]); 888 USB_BUS_UNLOCK(bus); 889 890 /* Do initial explore */ 891 usb_needs_explore(bus, 1); 892 } 893 } 894 SYSUNINIT(usb_bus_unload, SI_SUB_KLD, SI_ORDER_ANY, usb_bus_unload, NULL); 895 896 /*------------------------------------------------------------------------* 897 * usb_bus_mem_flush_all_cb 898 *------------------------------------------------------------------------*/ 899 #if USB_HAVE_BUSDMA 900 static void 901 usb_bus_mem_flush_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 902 struct usb_page *pg, usb_size_t size, usb_size_t align) 903 { 904 usb_pc_cpu_flush(pc); 905 } 906 #endif 907 908 /*------------------------------------------------------------------------* 909 * usb_bus_mem_flush_all - factored out code 910 *------------------------------------------------------------------------*/ 911 #if USB_HAVE_BUSDMA 912 void 913 usb_bus_mem_flush_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) 914 { 915 if (cb) { 916 cb(bus, &usb_bus_mem_flush_all_cb); 917 } 918 } 919 #endif 920 921 /*------------------------------------------------------------------------* 922 * usb_bus_mem_alloc_all_cb 923 *------------------------------------------------------------------------*/ 924 #if USB_HAVE_BUSDMA 925 static void 926 usb_bus_mem_alloc_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 927 struct usb_page *pg, usb_size_t size, usb_size_t align) 928 { 929 /* need to initialize the page cache */ 930 pc->tag_parent = bus->dma_parent_tag; 931 932 if (usb_pc_alloc_mem(pc, pg, size, align)) { 933 bus->alloc_failed = 1; 934 } 935 } 936 #endif 937 938 /*------------------------------------------------------------------------* 939 * usb_bus_mem_alloc_all - factored out code 940 * 941 * Returns: 942 * 0: Success 943 * Else: Failure 944 *------------------------------------------------------------------------*/ 945 uint8_t 946 usb_bus_mem_alloc_all(struct usb_bus *bus, bus_dma_tag_t dmat, 947 usb_bus_mem_cb_t *cb) 948 { 949 bus->alloc_failed = 0; 950 951 mtx_init(&bus->bus_mtx, device_get_nameunit(bus->parent), 952 "usb_def_mtx", MTX_DEF | MTX_RECURSE); 953 954 mtx_init(&bus->bus_spin_lock, device_get_nameunit(bus->parent), 955 "usb_spin_mtx", MTX_SPIN | MTX_RECURSE); 956 957 usb_callout_init_mtx(&bus->power_wdog, 958 &bus->bus_mtx, 0); 959 960 TAILQ_INIT(&bus->intr_q.head); 961 962 #if USB_HAVE_BUSDMA 963 usb_dma_tag_setup(bus->dma_parent_tag, bus->dma_tags, 964 dmat, &bus->bus_mtx, NULL, bus->dma_bits, USB_BUS_DMA_TAG_MAX); 965 #endif 966 if ((bus->devices_max > USB_MAX_DEVICES) || 967 (bus->devices_max < USB_MIN_DEVICES) || 968 (bus->devices == NULL)) { 969 DPRINTFN(0, "Devices field has not been " 970 "initialised properly\n"); 971 bus->alloc_failed = 1; /* failure */ 972 } 973 #if USB_HAVE_BUSDMA 974 if (cb) { 975 cb(bus, &usb_bus_mem_alloc_all_cb); 976 } 977 #endif 978 if (bus->alloc_failed) { 979 usb_bus_mem_free_all(bus, cb); 980 } 981 return (bus->alloc_failed); 982 } 983 984 /*------------------------------------------------------------------------* 985 * usb_bus_mem_free_all_cb 986 *------------------------------------------------------------------------*/ 987 #if USB_HAVE_BUSDMA 988 static void 989 usb_bus_mem_free_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 990 struct usb_page *pg, usb_size_t size, usb_size_t align) 991 { 992 usb_pc_free_mem(pc); 993 } 994 #endif 995 996 /*------------------------------------------------------------------------* 997 * usb_bus_mem_free_all - factored out code 998 *------------------------------------------------------------------------*/ 999 void 1000 usb_bus_mem_free_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) 1001 { 1002 #if USB_HAVE_BUSDMA 1003 if (cb) { 1004 cb(bus, &usb_bus_mem_free_all_cb); 1005 } 1006 usb_dma_tag_unsetup(bus->dma_parent_tag); 1007 #endif 1008 1009 mtx_destroy(&bus->bus_mtx); 1010 mtx_destroy(&bus->bus_spin_lock); 1011 } 1012 1013 /* convenience wrappers */ 1014 void 1015 usb_proc_explore_mwait(struct usb_device *udev, void *pm1, void *pm2) 1016 { 1017 usb_proc_mwait(USB_BUS_EXPLORE_PROC(udev->bus), pm1, pm2); 1018 } 1019 1020 void * 1021 usb_proc_explore_msignal(struct usb_device *udev, void *pm1, void *pm2) 1022 { 1023 return (usb_proc_msignal(USB_BUS_EXPLORE_PROC(udev->bus), pm1, pm2)); 1024 } 1025 1026 void 1027 usb_proc_explore_lock(struct usb_device *udev) 1028 { 1029 USB_BUS_LOCK(udev->bus); 1030 } 1031 1032 void 1033 usb_proc_explore_unlock(struct usb_device *udev) 1034 { 1035 USB_BUS_UNLOCK(udev->bus); 1036 } 1037