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(USB_BUS_EXPLORE_PROC(bus), 218 &bus->detach_msg[0], &bus->detach_msg[1]); 219 220 /* Wait for detach to complete */ 221 usb_proc_mwait(USB_BUS_EXPLORE_PROC(bus), 222 &bus->detach_msg[0], &bus->detach_msg[1]); 223 224 USB_BUS_UNLOCK(bus); 225 226 #if USB_HAVE_PER_BUS_PROCESS 227 /* Get rid of USB callback processes */ 228 229 usb_proc_free(USB_BUS_GIANT_PROC(bus)); 230 usb_proc_free(USB_BUS_NON_GIANT_PROC(bus)); 231 232 /* Get rid of USB explore process */ 233 234 usb_proc_free(USB_BUS_EXPLORE_PROC(bus)); 235 236 /* Get rid of control transfer process */ 237 238 usb_proc_free(USB_BUS_CONTROL_XFER_PROC(bus)); 239 #endif 240 241 #if USB_HAVE_PF 242 usbpf_detach(bus); 243 #endif 244 return (0); 245 } 246 247 /*------------------------------------------------------------------------* 248 * usb_suspend 249 *------------------------------------------------------------------------*/ 250 static int 251 usb_suspend(device_t dev) 252 { 253 struct usb_bus *bus = device_get_softc(dev); 254 255 DPRINTF("\n"); 256 257 if (bus == NULL) { 258 /* was never setup properly */ 259 return (0); 260 } 261 262 USB_BUS_LOCK(bus); 263 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), 264 &bus->suspend_msg[0], &bus->suspend_msg[1]); 265 if (usb_no_suspend_wait == 0) { 266 /* wait for suspend callback to be executed */ 267 usb_proc_mwait(USB_BUS_EXPLORE_PROC(bus), 268 &bus->suspend_msg[0], &bus->suspend_msg[1]); 269 } 270 USB_BUS_UNLOCK(bus); 271 272 return (0); 273 } 274 275 /*------------------------------------------------------------------------* 276 * usb_resume 277 *------------------------------------------------------------------------*/ 278 static int 279 usb_resume(device_t dev) 280 { 281 struct usb_bus *bus = device_get_softc(dev); 282 283 DPRINTF("\n"); 284 285 if (bus == NULL) { 286 /* was never setup properly */ 287 return (0); 288 } 289 290 USB_BUS_LOCK(bus); 291 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), 292 &bus->resume_msg[0], &bus->resume_msg[1]); 293 USB_BUS_UNLOCK(bus); 294 295 return (0); 296 } 297 298 /*------------------------------------------------------------------------* 299 * usb_shutdown 300 *------------------------------------------------------------------------*/ 301 static int 302 usb_shutdown(device_t dev) 303 { 304 struct usb_bus *bus = device_get_softc(dev); 305 306 DPRINTF("\n"); 307 308 if (bus == NULL) { 309 /* was never setup properly */ 310 return (0); 311 } 312 313 device_printf(bus->bdev, "Controller shutdown\n"); 314 315 USB_BUS_LOCK(bus); 316 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), 317 &bus->shutdown_msg[0], &bus->shutdown_msg[1]); 318 if (usb_no_shutdown_wait == 0) { 319 /* wait for shutdown callback to be executed */ 320 usb_proc_mwait(USB_BUS_EXPLORE_PROC(bus), 321 &bus->shutdown_msg[0], &bus->shutdown_msg[1]); 322 } 323 USB_BUS_UNLOCK(bus); 324 325 device_printf(bus->bdev, "Controller shutdown complete\n"); 326 327 return (0); 328 } 329 330 /*------------------------------------------------------------------------* 331 * usb_bus_explore 332 * 333 * This function is used to explore the device tree from the root. 334 *------------------------------------------------------------------------*/ 335 static void 336 usb_bus_explore(struct usb_proc_msg *pm) 337 { 338 struct usb_bus *bus; 339 struct usb_device *udev; 340 341 bus = ((struct usb_bus_msg *)pm)->bus; 342 udev = bus->devices[USB_ROOT_HUB_ADDR]; 343 344 if (bus->no_explore != 0) 345 return; 346 347 if (udev && udev->hub) { 348 349 if (bus->do_probe) { 350 bus->do_probe = 0; 351 bus->driver_added_refcount++; 352 } 353 if (bus->driver_added_refcount == 0) { 354 /* avoid zero, hence that is memory default */ 355 bus->driver_added_refcount = 1; 356 } 357 358 #ifdef DDB 359 /* 360 * The following three lines of code are only here to 361 * recover from DDB: 362 */ 363 usb_proc_rewakeup(USB_BUS_CONTROL_XFER_PROC(bus)); 364 usb_proc_rewakeup(USB_BUS_GIANT_PROC(bus)); 365 usb_proc_rewakeup(USB_BUS_NON_GIANT_PROC(bus)); 366 #endif 367 368 USB_BUS_UNLOCK(bus); 369 370 #if USB_HAVE_POWERD 371 /* 372 * First update the USB power state! 373 */ 374 usb_bus_powerd(bus); 375 #endif 376 /* Explore the Root USB HUB. */ 377 (udev->hub->explore) (udev); 378 USB_BUS_LOCK(bus); 379 } 380 #if USB_HAVE_ROOT_MOUNT_HOLD 381 usb_root_mount_rel(bus); 382 #endif 383 } 384 385 /*------------------------------------------------------------------------* 386 * usb_bus_detach 387 * 388 * This function is used to detach the device tree from the root. 389 *------------------------------------------------------------------------*/ 390 static void 391 usb_bus_detach(struct usb_proc_msg *pm) 392 { 393 struct usb_bus *bus; 394 struct usb_device *udev; 395 device_t dev; 396 397 bus = ((struct usb_bus_msg *)pm)->bus; 398 udev = bus->devices[USB_ROOT_HUB_ADDR]; 399 dev = bus->bdev; 400 /* clear the softc */ 401 device_set_softc(dev, NULL); 402 USB_BUS_UNLOCK(bus); 403 404 /* detach children first */ 405 mtx_lock(&Giant); 406 bus_generic_detach(dev); 407 mtx_unlock(&Giant); 408 409 /* 410 * Free USB device and all subdevices, if any. 411 */ 412 usb_free_device(udev, 0); 413 414 USB_BUS_LOCK(bus); 415 /* clear bdev variable last */ 416 bus->bdev = NULL; 417 } 418 419 /*------------------------------------------------------------------------* 420 * usb_bus_suspend 421 * 422 * This function is used to suspend the USB contoller. 423 *------------------------------------------------------------------------*/ 424 static void 425 usb_bus_suspend(struct usb_proc_msg *pm) 426 { 427 struct usb_bus *bus; 428 struct usb_device *udev; 429 usb_error_t err; 430 431 bus = ((struct usb_bus_msg *)pm)->bus; 432 udev = bus->devices[USB_ROOT_HUB_ADDR]; 433 434 if (udev == NULL || bus->bdev == NULL) 435 return; 436 437 USB_BUS_UNLOCK(bus); 438 439 /* 440 * We use the shutdown event here because the suspend and 441 * resume events are reserved for the USB port suspend and 442 * resume. The USB system suspend is implemented like full 443 * shutdown and all connected USB devices will be disconnected 444 * subsequently. At resume all USB devices will be 445 * re-connected again. 446 */ 447 448 bus_generic_shutdown(bus->bdev); 449 450 usbd_enum_lock(udev); 451 452 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX); 453 if (err) 454 device_printf(bus->bdev, "Could not unconfigure root HUB\n"); 455 456 USB_BUS_LOCK(bus); 457 bus->hw_power_state = 0; 458 bus->no_explore = 1; 459 USB_BUS_UNLOCK(bus); 460 461 if (bus->methods->set_hw_power != NULL) 462 (bus->methods->set_hw_power) (bus); 463 464 if (bus->methods->set_hw_power_sleep != NULL) 465 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SUSPEND); 466 467 usbd_enum_unlock(udev); 468 469 USB_BUS_LOCK(bus); 470 } 471 472 /*------------------------------------------------------------------------* 473 * usb_bus_resume 474 * 475 * This function is used to resume the USB contoller. 476 *------------------------------------------------------------------------*/ 477 static void 478 usb_bus_resume(struct usb_proc_msg *pm) 479 { 480 struct usb_bus *bus; 481 struct usb_device *udev; 482 usb_error_t err; 483 484 bus = ((struct usb_bus_msg *)pm)->bus; 485 udev = bus->devices[USB_ROOT_HUB_ADDR]; 486 487 if (udev == NULL || bus->bdev == NULL) 488 return; 489 490 USB_BUS_UNLOCK(bus); 491 492 usbd_enum_lock(udev); 493 #if 0 494 DEVMETHOD(usb_take_controller, NULL); /* dummy */ 495 #endif 496 USB_TAKE_CONTROLLER(device_get_parent(bus->bdev)); 497 498 USB_BUS_LOCK(bus); 499 bus->hw_power_state = 500 USB_HW_POWER_CONTROL | 501 USB_HW_POWER_BULK | 502 USB_HW_POWER_INTERRUPT | 503 USB_HW_POWER_ISOC | 504 USB_HW_POWER_NON_ROOT_HUB; 505 bus->no_explore = 0; 506 USB_BUS_UNLOCK(bus); 507 508 if (bus->methods->set_hw_power_sleep != NULL) 509 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_RESUME); 510 511 if (bus->methods->set_hw_power != NULL) 512 (bus->methods->set_hw_power) (bus); 513 514 /* restore USB configuration to index 0 */ 515 err = usbd_set_config_index(udev, 0); 516 if (err) 517 device_printf(bus->bdev, "Could not configure root HUB\n"); 518 519 /* probe and attach */ 520 err = usb_probe_and_attach(udev, USB_IFACE_INDEX_ANY); 521 if (err) { 522 device_printf(bus->bdev, "Could not probe and " 523 "attach root HUB\n"); 524 } 525 526 usbd_enum_unlock(udev); 527 528 USB_BUS_LOCK(bus); 529 } 530 531 /*------------------------------------------------------------------------* 532 * usb_bus_shutdown 533 * 534 * This function is used to shutdown the USB contoller. 535 *------------------------------------------------------------------------*/ 536 static void 537 usb_bus_shutdown(struct usb_proc_msg *pm) 538 { 539 struct usb_bus *bus; 540 struct usb_device *udev; 541 usb_error_t err; 542 543 bus = ((struct usb_bus_msg *)pm)->bus; 544 udev = bus->devices[USB_ROOT_HUB_ADDR]; 545 546 if (udev == NULL || bus->bdev == NULL) 547 return; 548 549 USB_BUS_UNLOCK(bus); 550 551 bus_generic_shutdown(bus->bdev); 552 553 usbd_enum_lock(udev); 554 555 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX); 556 if (err) 557 device_printf(bus->bdev, "Could not unconfigure root HUB\n"); 558 559 USB_BUS_LOCK(bus); 560 bus->hw_power_state = 0; 561 bus->no_explore = 1; 562 USB_BUS_UNLOCK(bus); 563 564 if (bus->methods->set_hw_power != NULL) 565 (bus->methods->set_hw_power) (bus); 566 567 if (bus->methods->set_hw_power_sleep != NULL) 568 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SHUTDOWN); 569 570 usbd_enum_unlock(udev); 571 572 USB_BUS_LOCK(bus); 573 } 574 575 static void 576 usb_power_wdog(void *arg) 577 { 578 struct usb_bus *bus = arg; 579 580 USB_BUS_LOCK_ASSERT(bus, MA_OWNED); 581 582 usb_callout_reset(&bus->power_wdog, 583 4 * hz, usb_power_wdog, arg); 584 585 #ifdef DDB 586 /* 587 * The following line of code is only here to recover from 588 * DDB: 589 */ 590 usb_proc_rewakeup(USB_BUS_EXPLORE_PROC(bus)); /* recover from DDB */ 591 #endif 592 593 #if USB_HAVE_POWERD 594 USB_BUS_UNLOCK(bus); 595 596 usb_bus_power_update(bus); 597 598 USB_BUS_LOCK(bus); 599 #endif 600 } 601 602 /*------------------------------------------------------------------------* 603 * usb_bus_attach 604 * 605 * This function attaches USB in context of the explore thread. 606 *------------------------------------------------------------------------*/ 607 static void 608 usb_bus_attach(struct usb_proc_msg *pm) 609 { 610 struct usb_bus *bus; 611 struct usb_device *child; 612 device_t dev; 613 usb_error_t err; 614 enum usb_dev_speed speed; 615 616 bus = ((struct usb_bus_msg *)pm)->bus; 617 dev = bus->bdev; 618 619 DPRINTF("\n"); 620 621 switch (bus->usbrev) { 622 case USB_REV_1_0: 623 speed = USB_SPEED_FULL; 624 device_printf(bus->bdev, "12Mbps Full Speed USB v1.0\n"); 625 break; 626 627 case USB_REV_1_1: 628 speed = USB_SPEED_FULL; 629 device_printf(bus->bdev, "12Mbps Full Speed USB v1.1\n"); 630 break; 631 632 case USB_REV_2_0: 633 speed = USB_SPEED_HIGH; 634 device_printf(bus->bdev, "480Mbps High Speed USB v2.0\n"); 635 break; 636 637 case USB_REV_2_5: 638 speed = USB_SPEED_VARIABLE; 639 device_printf(bus->bdev, "480Mbps Wireless USB v2.5\n"); 640 break; 641 642 case USB_REV_3_0: 643 speed = USB_SPEED_SUPER; 644 device_printf(bus->bdev, "5.0Gbps Super Speed USB v3.0\n"); 645 break; 646 647 default: 648 device_printf(bus->bdev, "Unsupported USB revision\n"); 649 #if USB_HAVE_ROOT_MOUNT_HOLD 650 usb_root_mount_rel(bus); 651 #endif 652 return; 653 } 654 655 /* default power_mask value */ 656 bus->hw_power_state = 657 USB_HW_POWER_CONTROL | 658 USB_HW_POWER_BULK | 659 USB_HW_POWER_INTERRUPT | 660 USB_HW_POWER_ISOC | 661 USB_HW_POWER_NON_ROOT_HUB; 662 663 USB_BUS_UNLOCK(bus); 664 665 /* make sure power is set at least once */ 666 667 if (bus->methods->set_hw_power != NULL) { 668 (bus->methods->set_hw_power) (bus); 669 } 670 671 /* allocate the Root USB device */ 672 673 child = usb_alloc_device(bus->bdev, bus, NULL, 0, 0, 1, 674 speed, USB_MODE_HOST); 675 if (child) { 676 err = usb_probe_and_attach(child, 677 USB_IFACE_INDEX_ANY); 678 if (!err) { 679 if ((bus->devices[USB_ROOT_HUB_ADDR] == NULL) || 680 (bus->devices[USB_ROOT_HUB_ADDR]->hub == NULL)) { 681 err = USB_ERR_NO_ROOT_HUB; 682 } 683 } 684 } else { 685 err = USB_ERR_NOMEM; 686 } 687 688 USB_BUS_LOCK(bus); 689 690 if (err) { 691 device_printf(bus->bdev, "Root HUB problem, error=%s\n", 692 usbd_errstr(err)); 693 #if USB_HAVE_ROOT_MOUNT_HOLD 694 usb_root_mount_rel(bus); 695 #endif 696 } 697 698 /* set softc - we are ready */ 699 device_set_softc(dev, bus); 700 701 /* start watchdog */ 702 usb_power_wdog(bus); 703 } 704 705 /*------------------------------------------------------------------------* 706 * usb_attach_sub 707 * 708 * This function creates a thread which runs the USB attach code. 709 *------------------------------------------------------------------------*/ 710 static void 711 usb_attach_sub(device_t dev, struct usb_bus *bus) 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 #if USB_HAVE_PER_BUS_PROCESS 753 /* Create USB explore and callback processes */ 754 755 if (usb_proc_create(USB_BUS_GIANT_PROC(bus), 756 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_MED)) { 757 device_printf(dev, "WARNING: Creation of USB Giant " 758 "callback process failed.\n"); 759 } else if (usb_proc_create(USB_BUS_NON_GIANT_PROC(bus), 760 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_HIGH)) { 761 device_printf(dev, "WARNING: Creation of USB non-Giant " 762 "callback process failed.\n"); 763 } else if (usb_proc_create(USB_BUS_EXPLORE_PROC(bus), 764 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_MED)) { 765 device_printf(dev, "WARNING: Creation of USB explore " 766 "process failed.\n"); 767 } else if (usb_proc_create(USB_BUS_CONTROL_XFER_PROC(bus), 768 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_MED)) { 769 device_printf(dev, "WARNING: Creation of USB control transfer " 770 "process failed.\n"); 771 } else 772 #endif 773 { 774 /* Get final attach going */ 775 USB_BUS_LOCK(bus); 776 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), 777 &bus->attach_msg[0], &bus->attach_msg[1]); 778 USB_BUS_UNLOCK(bus); 779 780 /* Do initial explore */ 781 usb_needs_explore(bus, 1); 782 } 783 } 784 SYSUNINIT(usb_bus_unload, SI_SUB_KLD, SI_ORDER_ANY, usb_bus_unload, NULL); 785 786 /*------------------------------------------------------------------------* 787 * usb_bus_mem_flush_all_cb 788 *------------------------------------------------------------------------*/ 789 #if USB_HAVE_BUSDMA 790 static void 791 usb_bus_mem_flush_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 792 struct usb_page *pg, usb_size_t size, usb_size_t align) 793 { 794 usb_pc_cpu_flush(pc); 795 } 796 #endif 797 798 /*------------------------------------------------------------------------* 799 * usb_bus_mem_flush_all - factored out code 800 *------------------------------------------------------------------------*/ 801 #if USB_HAVE_BUSDMA 802 void 803 usb_bus_mem_flush_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) 804 { 805 if (cb) { 806 cb(bus, &usb_bus_mem_flush_all_cb); 807 } 808 } 809 #endif 810 811 /*------------------------------------------------------------------------* 812 * usb_bus_mem_alloc_all_cb 813 *------------------------------------------------------------------------*/ 814 #if USB_HAVE_BUSDMA 815 static void 816 usb_bus_mem_alloc_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 817 struct usb_page *pg, usb_size_t size, usb_size_t align) 818 { 819 /* need to initialize the page cache */ 820 pc->tag_parent = bus->dma_parent_tag; 821 822 if (usb_pc_alloc_mem(pc, pg, size, align)) { 823 bus->alloc_failed = 1; 824 } 825 } 826 #endif 827 828 /*------------------------------------------------------------------------* 829 * usb_bus_mem_alloc_all - factored out code 830 * 831 * Returns: 832 * 0: Success 833 * Else: Failure 834 *------------------------------------------------------------------------*/ 835 uint8_t 836 usb_bus_mem_alloc_all(struct usb_bus *bus, bus_dma_tag_t dmat, 837 usb_bus_mem_cb_t *cb) 838 { 839 bus->alloc_failed = 0; 840 841 mtx_init(&bus->bus_mtx, device_get_nameunit(bus->parent), 842 NULL, MTX_DEF | MTX_RECURSE); 843 844 usb_callout_init_mtx(&bus->power_wdog, 845 &bus->bus_mtx, 0); 846 847 TAILQ_INIT(&bus->intr_q.head); 848 849 #if USB_HAVE_BUSDMA 850 usb_dma_tag_setup(bus->dma_parent_tag, bus->dma_tags, 851 dmat, &bus->bus_mtx, NULL, 32, USB_BUS_DMA_TAG_MAX); 852 #endif 853 if ((bus->devices_max > USB_MAX_DEVICES) || 854 (bus->devices_max < USB_MIN_DEVICES) || 855 (bus->devices == NULL)) { 856 DPRINTFN(0, "Devices field has not been " 857 "initialised properly\n"); 858 bus->alloc_failed = 1; /* failure */ 859 } 860 #if USB_HAVE_BUSDMA 861 if (cb) { 862 cb(bus, &usb_bus_mem_alloc_all_cb); 863 } 864 #endif 865 if (bus->alloc_failed) { 866 usb_bus_mem_free_all(bus, cb); 867 } 868 return (bus->alloc_failed); 869 } 870 871 /*------------------------------------------------------------------------* 872 * usb_bus_mem_free_all_cb 873 *------------------------------------------------------------------------*/ 874 #if USB_HAVE_BUSDMA 875 static void 876 usb_bus_mem_free_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 877 struct usb_page *pg, usb_size_t size, usb_size_t align) 878 { 879 usb_pc_free_mem(pc); 880 } 881 #endif 882 883 /*------------------------------------------------------------------------* 884 * usb_bus_mem_free_all - factored out code 885 *------------------------------------------------------------------------*/ 886 void 887 usb_bus_mem_free_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) 888 { 889 #if USB_HAVE_BUSDMA 890 if (cb) { 891 cb(bus, &usb_bus_mem_free_all_cb); 892 } 893 usb_dma_tag_unsetup(bus->dma_parent_tag); 894 #endif 895 896 mtx_destroy(&bus->bus_mtx); 897 } 898