1 /* $FreeBSD$ */ 2 /*- 3 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #ifdef USB_GLOBAL_INCLUDE_FILE 28 #include USB_GLOBAL_INCLUDE_FILE 29 #else 30 #include "opt_ddb.h" 31 32 #include <sys/stdint.h> 33 #include <sys/stddef.h> 34 #include <sys/param.h> 35 #include <sys/queue.h> 36 #include <sys/types.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/bus.h> 40 #include <sys/module.h> 41 #include <sys/lock.h> 42 #include <sys/mutex.h> 43 #include <sys/condvar.h> 44 #include <sys/sysctl.h> 45 #include <sys/sx.h> 46 #include <sys/unistd.h> 47 #include <sys/callout.h> 48 #include <sys/malloc.h> 49 #include <sys/priv.h> 50 51 #include <dev/usb/usb.h> 52 #include <dev/usb/usbdi.h> 53 54 #define USB_DEBUG_VAR usb_ctrl_debug 55 56 #include <dev/usb/usb_core.h> 57 #include <dev/usb/usb_debug.h> 58 #include <dev/usb/usb_process.h> 59 #include <dev/usb/usb_busdma.h> 60 #include <dev/usb/usb_dynamic.h> 61 #include <dev/usb/usb_device.h> 62 #include <dev/usb/usb_hub.h> 63 64 #include <dev/usb/usb_controller.h> 65 #include <dev/usb/usb_bus.h> 66 #include <dev/usb/usb_pf.h> 67 #include "usb_if.h" 68 #endif /* USB_GLOBAL_INCLUDE_FILE */ 69 70 /* function prototypes */ 71 72 static device_probe_t usb_probe; 73 static device_attach_t usb_attach; 74 static device_detach_t usb_detach; 75 static device_suspend_t usb_suspend; 76 static device_resume_t usb_resume; 77 static device_shutdown_t usb_shutdown; 78 79 static void usb_attach_sub(device_t, struct usb_bus *); 80 81 /* static variables */ 82 83 #ifdef USB_DEBUG 84 static int usb_ctrl_debug = 0; 85 86 static SYSCTL_NODE(_hw_usb, OID_AUTO, ctrl, CTLFLAG_RW, 0, "USB controller"); 87 SYSCTL_INT(_hw_usb_ctrl, OID_AUTO, debug, CTLFLAG_RW, &usb_ctrl_debug, 0, 88 "Debug level"); 89 #endif 90 91 #if USB_HAVE_ROOT_MOUNT_HOLD 92 static int usb_no_boot_wait = 0; 93 TUNABLE_INT("hw.usb.no_boot_wait", &usb_no_boot_wait); 94 SYSCTL_INT(_hw_usb, OID_AUTO, no_boot_wait, CTLFLAG_RD|CTLFLAG_TUN, &usb_no_boot_wait, 0, 95 "No USB device enumerate waiting at boot."); 96 #endif 97 98 static int usb_no_suspend_wait = 0; 99 TUNABLE_INT("hw.usb.no_suspend_wait", &usb_no_suspend_wait); 100 SYSCTL_INT(_hw_usb, OID_AUTO, no_suspend_wait, CTLFLAG_RW|CTLFLAG_TUN, 101 &usb_no_suspend_wait, 0, "No USB device waiting at system suspend."); 102 103 static int usb_no_shutdown_wait = 0; 104 TUNABLE_INT("hw.usb.no_shutdown_wait", &usb_no_shutdown_wait); 105 SYSCTL_INT(_hw_usb, OID_AUTO, no_shutdown_wait, CTLFLAG_RW|CTLFLAG_TUN, 106 &usb_no_shutdown_wait, 0, "No USB device waiting at system shutdown."); 107 108 static devclass_t usb_devclass; 109 110 static device_method_t usb_methods[] = { 111 DEVMETHOD(device_probe, usb_probe), 112 DEVMETHOD(device_attach, usb_attach), 113 DEVMETHOD(device_detach, usb_detach), 114 DEVMETHOD(device_suspend, usb_suspend), 115 DEVMETHOD(device_resume, usb_resume), 116 DEVMETHOD(device_shutdown, usb_shutdown), 117 118 DEVMETHOD_END 119 }; 120 121 static driver_t usb_driver = { 122 .name = "usbus", 123 .methods = usb_methods, 124 .size = 0, 125 }; 126 127 /* Host Only Drivers */ 128 DRIVER_MODULE(usbus, ohci, usb_driver, usb_devclass, 0, 0); 129 DRIVER_MODULE(usbus, uhci, usb_driver, usb_devclass, 0, 0); 130 DRIVER_MODULE(usbus, ehci, usb_driver, usb_devclass, 0, 0); 131 DRIVER_MODULE(usbus, xhci, usb_driver, usb_devclass, 0, 0); 132 133 /* Device Only Drivers */ 134 DRIVER_MODULE(usbus, at91_udp, usb_driver, usb_devclass, 0, 0); 135 DRIVER_MODULE(usbus, musbotg, usb_driver, usb_devclass, 0, 0); 136 DRIVER_MODULE(usbus, uss820, 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); 141 142 /*------------------------------------------------------------------------* 143 * usb_probe 144 * 145 * This function is called from "{ehci,ohci,uhci}_pci_attach()". 146 *------------------------------------------------------------------------*/ 147 static int 148 usb_probe(device_t dev) 149 { 150 DPRINTF("\n"); 151 return (0); 152 } 153 154 #if USB_HAVE_ROOT_MOUNT_HOLD 155 static void 156 usb_root_mount_rel(struct usb_bus *bus) 157 { 158 if (bus->bus_roothold != NULL) { 159 DPRINTF("Releasing root mount hold %p\n", bus->bus_roothold); 160 root_mount_rel(bus->bus_roothold); 161 bus->bus_roothold = NULL; 162 } 163 } 164 #endif 165 166 /*------------------------------------------------------------------------* 167 * usb_attach 168 *------------------------------------------------------------------------*/ 169 static int 170 usb_attach(device_t dev) 171 { 172 struct usb_bus *bus = device_get_ivars(dev); 173 174 DPRINTF("\n"); 175 176 if (bus == NULL) { 177 device_printf(dev, "USB device has no ivars\n"); 178 return (ENXIO); 179 } 180 181 #if USB_HAVE_ROOT_MOUNT_HOLD 182 if (usb_no_boot_wait == 0) { 183 /* delay vfs_mountroot until the bus is explored */ 184 bus->bus_roothold = root_mount_hold(device_get_nameunit(dev)); 185 } 186 #endif 187 usb_attach_sub(dev, bus); 188 189 return (0); /* return success */ 190 } 191 192 /*------------------------------------------------------------------------* 193 * usb_detach 194 *------------------------------------------------------------------------*/ 195 static int 196 usb_detach(device_t dev) 197 { 198 struct usb_bus *bus = device_get_softc(dev); 199 200 DPRINTF("\n"); 201 202 if (bus == NULL) { 203 /* was never setup properly */ 204 return (0); 205 } 206 /* Stop power watchdog */ 207 usb_callout_drain(&bus->power_wdog); 208 209 #if USB_HAVE_ROOT_MOUNT_HOLD 210 /* Let the USB explore process detach all devices. */ 211 usb_root_mount_rel(bus); 212 #endif 213 214 USB_BUS_LOCK(bus); 215 216 /* Queue detach job */ 217 usb_proc_msignal(&bus->explore_proc, 218 &bus->detach_msg[0], &bus->detach_msg[1]); 219 220 /* Wait for detach to complete */ 221 usb_proc_mwait(&bus->explore_proc, 222 &bus->detach_msg[0], &bus->detach_msg[1]); 223 224 USB_BUS_UNLOCK(bus); 225 226 /* Get rid of USB callback processes */ 227 228 usb_proc_free(&bus->giant_callback_proc); 229 usb_proc_free(&bus->non_giant_callback_proc); 230 231 /* Get rid of USB explore process */ 232 233 usb_proc_free(&bus->explore_proc); 234 235 /* Get rid of control transfer process */ 236 237 usb_proc_free(&bus->control_xfer_proc); 238 239 #if USB_HAVE_PF 240 usbpf_detach(bus); 241 #endif 242 return (0); 243 } 244 245 /*------------------------------------------------------------------------* 246 * usb_suspend 247 *------------------------------------------------------------------------*/ 248 static int 249 usb_suspend(device_t dev) 250 { 251 struct usb_bus *bus = device_get_softc(dev); 252 253 DPRINTF("\n"); 254 255 if (bus == NULL) { 256 /* was never setup properly */ 257 return (0); 258 } 259 260 USB_BUS_LOCK(bus); 261 usb_proc_msignal(&bus->explore_proc, 262 &bus->suspend_msg[0], &bus->suspend_msg[1]); 263 if (usb_no_suspend_wait == 0) { 264 /* wait for suspend callback to be executed */ 265 usb_proc_mwait(&bus->explore_proc, 266 &bus->suspend_msg[0], &bus->suspend_msg[1]); 267 } 268 USB_BUS_UNLOCK(bus); 269 270 return (0); 271 } 272 273 /*------------------------------------------------------------------------* 274 * usb_resume 275 *------------------------------------------------------------------------*/ 276 static int 277 usb_resume(device_t dev) 278 { 279 struct usb_bus *bus = device_get_softc(dev); 280 281 DPRINTF("\n"); 282 283 if (bus == NULL) { 284 /* was never setup properly */ 285 return (0); 286 } 287 288 USB_BUS_LOCK(bus); 289 usb_proc_msignal(&bus->explore_proc, 290 &bus->resume_msg[0], &bus->resume_msg[1]); 291 USB_BUS_UNLOCK(bus); 292 293 return (0); 294 } 295 296 /*------------------------------------------------------------------------* 297 * usb_shutdown 298 *------------------------------------------------------------------------*/ 299 static int 300 usb_shutdown(device_t dev) 301 { 302 struct usb_bus *bus = device_get_softc(dev); 303 304 DPRINTF("\n"); 305 306 if (bus == NULL) { 307 /* was never setup properly */ 308 return (0); 309 } 310 311 device_printf(bus->bdev, "Controller shutdown\n"); 312 313 USB_BUS_LOCK(bus); 314 usb_proc_msignal(&bus->explore_proc, 315 &bus->shutdown_msg[0], &bus->shutdown_msg[1]); 316 if (usb_no_shutdown_wait == 0) { 317 /* wait for shutdown callback to be executed */ 318 usb_proc_mwait(&bus->explore_proc, 319 &bus->shutdown_msg[0], &bus->shutdown_msg[1]); 320 } 321 USB_BUS_UNLOCK(bus); 322 323 device_printf(bus->bdev, "Controller shutdown complete\n"); 324 325 return (0); 326 } 327 328 /*------------------------------------------------------------------------* 329 * usb_bus_explore 330 * 331 * This function is used to explore the device tree from the root. 332 *------------------------------------------------------------------------*/ 333 static void 334 usb_bus_explore(struct usb_proc_msg *pm) 335 { 336 struct usb_bus *bus; 337 struct usb_device *udev; 338 339 bus = ((struct usb_bus_msg *)pm)->bus; 340 udev = bus->devices[USB_ROOT_HUB_ADDR]; 341 342 if (bus->no_explore != 0) 343 return; 344 345 if (udev && udev->hub) { 346 347 if (bus->do_probe) { 348 bus->do_probe = 0; 349 bus->driver_added_refcount++; 350 } 351 if (bus->driver_added_refcount == 0) { 352 /* avoid zero, hence that is memory default */ 353 bus->driver_added_refcount = 1; 354 } 355 356 #ifdef DDB 357 /* 358 * The following three lines of code are only here to 359 * recover from DDB: 360 */ 361 usb_proc_rewakeup(&bus->control_xfer_proc); 362 usb_proc_rewakeup(&bus->giant_callback_proc); 363 usb_proc_rewakeup(&bus->non_giant_callback_proc); 364 #endif 365 366 USB_BUS_UNLOCK(bus); 367 368 #if USB_HAVE_POWERD 369 /* 370 * First update the USB power state! 371 */ 372 usb_bus_powerd(bus); 373 #endif 374 /* Explore the Root USB HUB. */ 375 (udev->hub->explore) (udev); 376 USB_BUS_LOCK(bus); 377 } 378 #if USB_HAVE_ROOT_MOUNT_HOLD 379 usb_root_mount_rel(bus); 380 #endif 381 } 382 383 /*------------------------------------------------------------------------* 384 * usb_bus_detach 385 * 386 * This function is used to detach the device tree from the root. 387 *------------------------------------------------------------------------*/ 388 static void 389 usb_bus_detach(struct usb_proc_msg *pm) 390 { 391 struct usb_bus *bus; 392 struct usb_device *udev; 393 device_t dev; 394 395 bus = ((struct usb_bus_msg *)pm)->bus; 396 udev = bus->devices[USB_ROOT_HUB_ADDR]; 397 dev = bus->bdev; 398 /* clear the softc */ 399 device_set_softc(dev, NULL); 400 USB_BUS_UNLOCK(bus); 401 402 /* detach children first */ 403 mtx_lock(&Giant); 404 bus_generic_detach(dev); 405 mtx_unlock(&Giant); 406 407 /* 408 * Free USB device and all subdevices, if any. 409 */ 410 usb_free_device(udev, 0); 411 412 USB_BUS_LOCK(bus); 413 /* clear bdev variable last */ 414 bus->bdev = NULL; 415 } 416 417 /*------------------------------------------------------------------------* 418 * usb_bus_suspend 419 * 420 * This function is used to suspend the USB contoller. 421 *------------------------------------------------------------------------*/ 422 static void 423 usb_bus_suspend(struct usb_proc_msg *pm) 424 { 425 struct usb_bus *bus; 426 struct usb_device *udev; 427 usb_error_t err; 428 429 bus = ((struct usb_bus_msg *)pm)->bus; 430 udev = bus->devices[USB_ROOT_HUB_ADDR]; 431 432 if (udev == NULL || bus->bdev == NULL) 433 return; 434 435 USB_BUS_UNLOCK(bus); 436 437 /* 438 * We use the shutdown event here because the suspend and 439 * resume events are reserved for the USB port suspend and 440 * resume. The USB system suspend is implemented like full 441 * shutdown and all connected USB devices will be disconnected 442 * subsequently. At resume all USB devices will be 443 * re-connected again. 444 */ 445 446 bus_generic_shutdown(bus->bdev); 447 448 usbd_enum_lock(udev); 449 450 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX); 451 if (err) 452 device_printf(bus->bdev, "Could not unconfigure root HUB\n"); 453 454 USB_BUS_LOCK(bus); 455 bus->hw_power_state = 0; 456 bus->no_explore = 1; 457 USB_BUS_UNLOCK(bus); 458 459 if (bus->methods->set_hw_power != NULL) 460 (bus->methods->set_hw_power) (bus); 461 462 if (bus->methods->set_hw_power_sleep != NULL) 463 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SUSPEND); 464 465 usbd_enum_unlock(udev); 466 467 USB_BUS_LOCK(bus); 468 } 469 470 /*------------------------------------------------------------------------* 471 * usb_bus_resume 472 * 473 * This function is used to resume the USB contoller. 474 *------------------------------------------------------------------------*/ 475 static void 476 usb_bus_resume(struct usb_proc_msg *pm) 477 { 478 struct usb_bus *bus; 479 struct usb_device *udev; 480 usb_error_t err; 481 482 bus = ((struct usb_bus_msg *)pm)->bus; 483 udev = bus->devices[USB_ROOT_HUB_ADDR]; 484 485 if (udev == NULL || bus->bdev == NULL) 486 return; 487 488 USB_BUS_UNLOCK(bus); 489 490 usbd_enum_lock(udev); 491 #if 0 492 DEVMETHOD(usb_take_controller, NULL); /* dummy */ 493 #endif 494 USB_TAKE_CONTROLLER(device_get_parent(bus->bdev)); 495 496 USB_BUS_LOCK(bus); 497 bus->hw_power_state = 498 USB_HW_POWER_CONTROL | 499 USB_HW_POWER_BULK | 500 USB_HW_POWER_INTERRUPT | 501 USB_HW_POWER_ISOC | 502 USB_HW_POWER_NON_ROOT_HUB; 503 bus->no_explore = 0; 504 USB_BUS_UNLOCK(bus); 505 506 if (bus->methods->set_hw_power_sleep != NULL) 507 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_RESUME); 508 509 if (bus->methods->set_hw_power != NULL) 510 (bus->methods->set_hw_power) (bus); 511 512 /* restore USB configuration to index 0 */ 513 err = usbd_set_config_index(udev, 0); 514 if (err) 515 device_printf(bus->bdev, "Could not configure root HUB\n"); 516 517 /* probe and attach */ 518 err = usb_probe_and_attach(udev, USB_IFACE_INDEX_ANY); 519 if (err) { 520 device_printf(bus->bdev, "Could not probe and " 521 "attach root HUB\n"); 522 } 523 524 usbd_enum_unlock(udev); 525 526 USB_BUS_LOCK(bus); 527 } 528 529 /*------------------------------------------------------------------------* 530 * usb_bus_shutdown 531 * 532 * This function is used to shutdown the USB contoller. 533 *------------------------------------------------------------------------*/ 534 static void 535 usb_bus_shutdown(struct usb_proc_msg *pm) 536 { 537 struct usb_bus *bus; 538 struct usb_device *udev; 539 usb_error_t err; 540 541 bus = ((struct usb_bus_msg *)pm)->bus; 542 udev = bus->devices[USB_ROOT_HUB_ADDR]; 543 544 if (udev == NULL || bus->bdev == NULL) 545 return; 546 547 USB_BUS_UNLOCK(bus); 548 549 bus_generic_shutdown(bus->bdev); 550 551 usbd_enum_lock(udev); 552 553 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX); 554 if (err) 555 device_printf(bus->bdev, "Could not unconfigure root HUB\n"); 556 557 USB_BUS_LOCK(bus); 558 bus->hw_power_state = 0; 559 bus->no_explore = 1; 560 USB_BUS_UNLOCK(bus); 561 562 if (bus->methods->set_hw_power != NULL) 563 (bus->methods->set_hw_power) (bus); 564 565 if (bus->methods->set_hw_power_sleep != NULL) 566 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SHUTDOWN); 567 568 usbd_enum_unlock(udev); 569 570 USB_BUS_LOCK(bus); 571 } 572 573 static void 574 usb_power_wdog(void *arg) 575 { 576 struct usb_bus *bus = arg; 577 578 USB_BUS_LOCK_ASSERT(bus, MA_OWNED); 579 580 usb_callout_reset(&bus->power_wdog, 581 4 * hz, usb_power_wdog, arg); 582 583 #ifdef DDB 584 /* 585 * The following line of code is only here to recover from 586 * DDB: 587 */ 588 usb_proc_rewakeup(&bus->explore_proc); /* recover from DDB */ 589 #endif 590 591 #if USB_HAVE_POWERD 592 USB_BUS_UNLOCK(bus); 593 594 usb_bus_power_update(bus); 595 596 USB_BUS_LOCK(bus); 597 #endif 598 } 599 600 /*------------------------------------------------------------------------* 601 * usb_bus_attach 602 * 603 * This function attaches USB in context of the explore thread. 604 *------------------------------------------------------------------------*/ 605 static void 606 usb_bus_attach(struct usb_proc_msg *pm) 607 { 608 struct usb_bus *bus; 609 struct usb_device *child; 610 device_t dev; 611 usb_error_t err; 612 enum usb_dev_speed speed; 613 614 bus = ((struct usb_bus_msg *)pm)->bus; 615 dev = bus->bdev; 616 617 DPRINTF("\n"); 618 619 switch (bus->usbrev) { 620 case USB_REV_1_0: 621 speed = USB_SPEED_FULL; 622 device_printf(bus->bdev, "12Mbps Full Speed USB v1.0\n"); 623 break; 624 625 case USB_REV_1_1: 626 speed = USB_SPEED_FULL; 627 device_printf(bus->bdev, "12Mbps Full Speed USB v1.1\n"); 628 break; 629 630 case USB_REV_2_0: 631 speed = USB_SPEED_HIGH; 632 device_printf(bus->bdev, "480Mbps High Speed USB v2.0\n"); 633 break; 634 635 case USB_REV_2_5: 636 speed = USB_SPEED_VARIABLE; 637 device_printf(bus->bdev, "480Mbps Wireless USB v2.5\n"); 638 break; 639 640 case USB_REV_3_0: 641 speed = USB_SPEED_SUPER; 642 device_printf(bus->bdev, "5.0Gbps Super Speed USB v3.0\n"); 643 break; 644 645 default: 646 device_printf(bus->bdev, "Unsupported USB revision\n"); 647 #if USB_HAVE_ROOT_MOUNT_HOLD 648 usb_root_mount_rel(bus); 649 #endif 650 return; 651 } 652 653 /* default power_mask value */ 654 bus->hw_power_state = 655 USB_HW_POWER_CONTROL | 656 USB_HW_POWER_BULK | 657 USB_HW_POWER_INTERRUPT | 658 USB_HW_POWER_ISOC | 659 USB_HW_POWER_NON_ROOT_HUB; 660 661 USB_BUS_UNLOCK(bus); 662 663 /* make sure power is set at least once */ 664 665 if (bus->methods->set_hw_power != NULL) { 666 (bus->methods->set_hw_power) (bus); 667 } 668 669 /* allocate the Root USB device */ 670 671 child = usb_alloc_device(bus->bdev, bus, NULL, 0, 0, 1, 672 speed, USB_MODE_HOST); 673 if (child) { 674 err = usb_probe_and_attach(child, 675 USB_IFACE_INDEX_ANY); 676 if (!err) { 677 if ((bus->devices[USB_ROOT_HUB_ADDR] == NULL) || 678 (bus->devices[USB_ROOT_HUB_ADDR]->hub == NULL)) { 679 err = USB_ERR_NO_ROOT_HUB; 680 } 681 } 682 } else { 683 err = USB_ERR_NOMEM; 684 } 685 686 USB_BUS_LOCK(bus); 687 688 if (err) { 689 device_printf(bus->bdev, "Root HUB problem, error=%s\n", 690 usbd_errstr(err)); 691 #if USB_HAVE_ROOT_MOUNT_HOLD 692 usb_root_mount_rel(bus); 693 #endif 694 } 695 696 /* set softc - we are ready */ 697 device_set_softc(dev, bus); 698 699 /* start watchdog */ 700 usb_power_wdog(bus); 701 } 702 703 /*------------------------------------------------------------------------* 704 * usb_attach_sub 705 * 706 * This function creates a thread which runs the USB attach code. 707 *------------------------------------------------------------------------*/ 708 static void 709 usb_attach_sub(device_t dev, struct usb_bus *bus) 710 { 711 const char *pname = device_get_nameunit(dev); 712 713 mtx_lock(&Giant); 714 if (usb_devclass_ptr == NULL) 715 usb_devclass_ptr = devclass_find("usbus"); 716 mtx_unlock(&Giant); 717 718 #if USB_HAVE_PF 719 usbpf_attach(bus); 720 #endif 721 /* Initialise USB process messages */ 722 bus->explore_msg[0].hdr.pm_callback = &usb_bus_explore; 723 bus->explore_msg[0].bus = bus; 724 bus->explore_msg[1].hdr.pm_callback = &usb_bus_explore; 725 bus->explore_msg[1].bus = bus; 726 727 bus->detach_msg[0].hdr.pm_callback = &usb_bus_detach; 728 bus->detach_msg[0].bus = bus; 729 bus->detach_msg[1].hdr.pm_callback = &usb_bus_detach; 730 bus->detach_msg[1].bus = bus; 731 732 bus->attach_msg[0].hdr.pm_callback = &usb_bus_attach; 733 bus->attach_msg[0].bus = bus; 734 bus->attach_msg[1].hdr.pm_callback = &usb_bus_attach; 735 bus->attach_msg[1].bus = bus; 736 737 bus->suspend_msg[0].hdr.pm_callback = &usb_bus_suspend; 738 bus->suspend_msg[0].bus = bus; 739 bus->suspend_msg[1].hdr.pm_callback = &usb_bus_suspend; 740 bus->suspend_msg[1].bus = bus; 741 742 bus->resume_msg[0].hdr.pm_callback = &usb_bus_resume; 743 bus->resume_msg[0].bus = bus; 744 bus->resume_msg[1].hdr.pm_callback = &usb_bus_resume; 745 bus->resume_msg[1].bus = bus; 746 747 bus->shutdown_msg[0].hdr.pm_callback = &usb_bus_shutdown; 748 bus->shutdown_msg[0].bus = bus; 749 bus->shutdown_msg[1].hdr.pm_callback = &usb_bus_shutdown; 750 bus->shutdown_msg[1].bus = bus; 751 752 /* Create USB explore and callback processes */ 753 754 if (usb_proc_create(&bus->giant_callback_proc, 755 &bus->bus_mtx, pname, USB_PRI_MED)) { 756 device_printf(dev, "WARNING: Creation of USB Giant " 757 "callback process failed.\n"); 758 } else if (usb_proc_create(&bus->non_giant_callback_proc, 759 &bus->bus_mtx, pname, USB_PRI_HIGH)) { 760 device_printf(dev, "WARNING: Creation of USB non-Giant " 761 "callback process failed.\n"); 762 } else if (usb_proc_create(&bus->explore_proc, 763 &bus->bus_mtx, pname, USB_PRI_MED)) { 764 device_printf(dev, "WARNING: Creation of USB explore " 765 "process failed.\n"); 766 } else if (usb_proc_create(&bus->control_xfer_proc, 767 &bus->bus_mtx, pname, USB_PRI_MED)) { 768 device_printf(dev, "WARNING: Creation of USB control transfer " 769 "process failed.\n"); 770 } else { 771 /* Get final attach going */ 772 USB_BUS_LOCK(bus); 773 usb_proc_msignal(&bus->explore_proc, 774 &bus->attach_msg[0], &bus->attach_msg[1]); 775 USB_BUS_UNLOCK(bus); 776 777 /* Do initial explore */ 778 usb_needs_explore(bus, 1); 779 } 780 } 781 782 SYSUNINIT(usb_bus_unload, SI_SUB_KLD, SI_ORDER_ANY, usb_bus_unload, NULL); 783 784 /*------------------------------------------------------------------------* 785 * usb_bus_mem_flush_all_cb 786 *------------------------------------------------------------------------*/ 787 #if USB_HAVE_BUSDMA 788 static void 789 usb_bus_mem_flush_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 790 struct usb_page *pg, usb_size_t size, usb_size_t align) 791 { 792 usb_pc_cpu_flush(pc); 793 } 794 #endif 795 796 /*------------------------------------------------------------------------* 797 * usb_bus_mem_flush_all - factored out code 798 *------------------------------------------------------------------------*/ 799 #if USB_HAVE_BUSDMA 800 void 801 usb_bus_mem_flush_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) 802 { 803 if (cb) { 804 cb(bus, &usb_bus_mem_flush_all_cb); 805 } 806 } 807 #endif 808 809 /*------------------------------------------------------------------------* 810 * usb_bus_mem_alloc_all_cb 811 *------------------------------------------------------------------------*/ 812 #if USB_HAVE_BUSDMA 813 static void 814 usb_bus_mem_alloc_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 815 struct usb_page *pg, usb_size_t size, usb_size_t align) 816 { 817 /* need to initialize the page cache */ 818 pc->tag_parent = bus->dma_parent_tag; 819 820 if (usb_pc_alloc_mem(pc, pg, size, align)) { 821 bus->alloc_failed = 1; 822 } 823 } 824 #endif 825 826 /*------------------------------------------------------------------------* 827 * usb_bus_mem_alloc_all - factored out code 828 * 829 * Returns: 830 * 0: Success 831 * Else: Failure 832 *------------------------------------------------------------------------*/ 833 uint8_t 834 usb_bus_mem_alloc_all(struct usb_bus *bus, bus_dma_tag_t dmat, 835 usb_bus_mem_cb_t *cb) 836 { 837 bus->alloc_failed = 0; 838 839 mtx_init(&bus->bus_mtx, device_get_nameunit(bus->parent), 840 NULL, MTX_DEF | MTX_RECURSE); 841 842 usb_callout_init_mtx(&bus->power_wdog, 843 &bus->bus_mtx, 0); 844 845 TAILQ_INIT(&bus->intr_q.head); 846 847 #if USB_HAVE_BUSDMA 848 usb_dma_tag_setup(bus->dma_parent_tag, bus->dma_tags, 849 dmat, &bus->bus_mtx, NULL, 32, USB_BUS_DMA_TAG_MAX); 850 #endif 851 if ((bus->devices_max > USB_MAX_DEVICES) || 852 (bus->devices_max < USB_MIN_DEVICES) || 853 (bus->devices == NULL)) { 854 DPRINTFN(0, "Devices field has not been " 855 "initialised properly\n"); 856 bus->alloc_failed = 1; /* failure */ 857 } 858 #if USB_HAVE_BUSDMA 859 if (cb) { 860 cb(bus, &usb_bus_mem_alloc_all_cb); 861 } 862 #endif 863 if (bus->alloc_failed) { 864 usb_bus_mem_free_all(bus, cb); 865 } 866 return (bus->alloc_failed); 867 } 868 869 /*------------------------------------------------------------------------* 870 * usb_bus_mem_free_all_cb 871 *------------------------------------------------------------------------*/ 872 #if USB_HAVE_BUSDMA 873 static void 874 usb_bus_mem_free_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 875 struct usb_page *pg, usb_size_t size, usb_size_t align) 876 { 877 usb_pc_free_mem(pc); 878 } 879 #endif 880 881 /*------------------------------------------------------------------------* 882 * usb_bus_mem_free_all - factored out code 883 *------------------------------------------------------------------------*/ 884 void 885 usb_bus_mem_free_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) 886 { 887 #if USB_HAVE_BUSDMA 888 if (cb) { 889 cb(bus, &usb_bus_mem_free_all_cb); 890 } 891 usb_dma_tag_unsetup(bus->dma_parent_tag); 892 #endif 893 894 mtx_destroy(&bus->bus_mtx); 895 } 896