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 #include "opt_ddb.h" 28 29 #include <sys/stdint.h> 30 #include <sys/stddef.h> 31 #include <sys/param.h> 32 #include <sys/queue.h> 33 #include <sys/types.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/bus.h> 37 #include <sys/module.h> 38 #include <sys/lock.h> 39 #include <sys/mutex.h> 40 #include <sys/condvar.h> 41 #include <sys/sysctl.h> 42 #include <sys/sx.h> 43 #include <sys/unistd.h> 44 #include <sys/callout.h> 45 #include <sys/malloc.h> 46 #include <sys/priv.h> 47 48 #include <dev/usb/usb.h> 49 #include <dev/usb/usbdi.h> 50 51 #define USB_DEBUG_VAR usb_ctrl_debug 52 53 #include <dev/usb/usb_core.h> 54 #include <dev/usb/usb_debug.h> 55 #include <dev/usb/usb_process.h> 56 #include <dev/usb/usb_busdma.h> 57 #include <dev/usb/usb_dynamic.h> 58 #include <dev/usb/usb_device.h> 59 #include <dev/usb/usb_hub.h> 60 61 #include <dev/usb/usb_controller.h> 62 #include <dev/usb/usb_bus.h> 63 #include <dev/usb/usb_pf.h> 64 #include "usb_if.h" 65 66 /* function prototypes */ 67 68 static device_probe_t usb_probe; 69 static device_attach_t usb_attach; 70 static device_detach_t usb_detach; 71 static device_suspend_t usb_suspend; 72 static device_resume_t usb_resume; 73 static device_shutdown_t usb_shutdown; 74 75 static void usb_attach_sub(device_t, struct usb_bus *); 76 77 /* static variables */ 78 79 #ifdef USB_DEBUG 80 static int usb_ctrl_debug = 0; 81 82 static SYSCTL_NODE(_hw_usb, OID_AUTO, ctrl, CTLFLAG_RW, 0, "USB controller"); 83 SYSCTL_INT(_hw_usb_ctrl, OID_AUTO, debug, CTLFLAG_RW, &usb_ctrl_debug, 0, 84 "Debug level"); 85 #endif 86 87 static int usb_no_boot_wait = 0; 88 TUNABLE_INT("hw.usb.no_boot_wait", &usb_no_boot_wait); 89 SYSCTL_INT(_hw_usb, OID_AUTO, no_boot_wait, CTLFLAG_RD|CTLFLAG_TUN, &usb_no_boot_wait, 0, 90 "No USB device enumerate waiting at boot."); 91 92 static int usb_no_suspend_wait = 0; 93 TUNABLE_INT("hw.usb.no_suspend_wait", &usb_no_suspend_wait); 94 SYSCTL_INT(_hw_usb, OID_AUTO, no_suspend_wait, CTLFLAG_RW|CTLFLAG_TUN, 95 &usb_no_suspend_wait, 0, "No USB device waiting at system suspend."); 96 97 static int usb_no_shutdown_wait = 0; 98 TUNABLE_INT("hw.usb.no_shutdown_wait", &usb_no_shutdown_wait); 99 SYSCTL_INT(_hw_usb, OID_AUTO, no_shutdown_wait, CTLFLAG_RW|CTLFLAG_TUN, 100 &usb_no_shutdown_wait, 0, "No USB device waiting at system shutdown."); 101 102 static devclass_t usb_devclass; 103 104 static device_method_t usb_methods[] = { 105 DEVMETHOD(device_probe, usb_probe), 106 DEVMETHOD(device_attach, usb_attach), 107 DEVMETHOD(device_detach, usb_detach), 108 DEVMETHOD(device_suspend, usb_suspend), 109 DEVMETHOD(device_resume, usb_resume), 110 DEVMETHOD(device_shutdown, usb_shutdown), 111 {0, 0} 112 }; 113 114 static driver_t usb_driver = { 115 .name = "usbus", 116 .methods = usb_methods, 117 .size = 0, 118 }; 119 120 /* Host Only Drivers */ 121 DRIVER_MODULE(usbus, ohci, usb_driver, usb_devclass, 0, 0); 122 DRIVER_MODULE(usbus, uhci, usb_driver, usb_devclass, 0, 0); 123 DRIVER_MODULE(usbus, ehci, usb_driver, usb_devclass, 0, 0); 124 DRIVER_MODULE(usbus, xhci, usb_driver, usb_devclass, 0, 0); 125 126 /* Device Only Drivers */ 127 DRIVER_MODULE(usbus, at91_udp, usb_driver, usb_devclass, 0, 0); 128 DRIVER_MODULE(usbus, musbotg, usb_driver, usb_devclass, 0, 0); 129 DRIVER_MODULE(usbus, uss820, usb_driver, usb_devclass, 0, 0); 130 DRIVER_MODULE(usbus, octusb, usb_driver, usb_devclass, 0, 0); 131 132 /* Dual Mode Drivers */ 133 DRIVER_MODULE(usbus, dwcotg, usb_driver, usb_devclass, 0, 0); 134 135 /*------------------------------------------------------------------------* 136 * usb_probe 137 * 138 * This function is called from "{ehci,ohci,uhci}_pci_attach()". 139 *------------------------------------------------------------------------*/ 140 static int 141 usb_probe(device_t dev) 142 { 143 DPRINTF("\n"); 144 return (0); 145 } 146 147 static void 148 usb_root_mount_rel(struct usb_bus *bus) 149 { 150 if (bus->bus_roothold != NULL) { 151 DPRINTF("Releasing root mount hold %p\n", bus->bus_roothold); 152 root_mount_rel(bus->bus_roothold); 153 bus->bus_roothold = NULL; 154 } 155 } 156 157 /*------------------------------------------------------------------------* 158 * usb_attach 159 *------------------------------------------------------------------------*/ 160 static int 161 usb_attach(device_t dev) 162 { 163 struct usb_bus *bus = device_get_ivars(dev); 164 165 DPRINTF("\n"); 166 167 if (bus == NULL) { 168 device_printf(dev, "USB device has no ivars\n"); 169 return (ENXIO); 170 } 171 172 if (usb_no_boot_wait == 0) { 173 /* delay vfs_mountroot until the bus is explored */ 174 bus->bus_roothold = root_mount_hold(device_get_nameunit(dev)); 175 } 176 177 usb_attach_sub(dev, bus); 178 179 return (0); /* return success */ 180 } 181 182 /*------------------------------------------------------------------------* 183 * usb_detach 184 *------------------------------------------------------------------------*/ 185 static int 186 usb_detach(device_t dev) 187 { 188 struct usb_bus *bus = device_get_softc(dev); 189 190 DPRINTF("\n"); 191 192 if (bus == NULL) { 193 /* was never setup properly */ 194 return (0); 195 } 196 /* Stop power watchdog */ 197 usb_callout_drain(&bus->power_wdog); 198 199 /* Let the USB explore process detach all devices. */ 200 usb_root_mount_rel(bus); 201 202 USB_BUS_LOCK(bus); 203 204 /* Queue detach job */ 205 usb_proc_msignal(&bus->explore_proc, 206 &bus->detach_msg[0], &bus->detach_msg[1]); 207 208 /* Wait for detach to complete */ 209 usb_proc_mwait(&bus->explore_proc, 210 &bus->detach_msg[0], &bus->detach_msg[1]); 211 212 USB_BUS_UNLOCK(bus); 213 214 /* Get rid of USB callback processes */ 215 216 usb_proc_free(&bus->giant_callback_proc); 217 usb_proc_free(&bus->non_giant_callback_proc); 218 219 /* Get rid of USB explore process */ 220 221 usb_proc_free(&bus->explore_proc); 222 223 /* Get rid of control transfer process */ 224 225 usb_proc_free(&bus->control_xfer_proc); 226 227 #if USB_HAVE_PF 228 usbpf_detach(bus); 229 #endif 230 return (0); 231 } 232 233 /*------------------------------------------------------------------------* 234 * usb_suspend 235 *------------------------------------------------------------------------*/ 236 static int 237 usb_suspend(device_t dev) 238 { 239 struct usb_bus *bus = device_get_softc(dev); 240 241 DPRINTF("\n"); 242 243 if (bus == NULL) { 244 /* was never setup properly */ 245 return (0); 246 } 247 248 USB_BUS_LOCK(bus); 249 usb_proc_msignal(&bus->explore_proc, 250 &bus->suspend_msg[0], &bus->suspend_msg[1]); 251 if (usb_no_suspend_wait == 0) { 252 /* wait for suspend callback to be executed */ 253 usb_proc_mwait(&bus->explore_proc, 254 &bus->suspend_msg[0], &bus->suspend_msg[1]); 255 } 256 USB_BUS_UNLOCK(bus); 257 258 return (0); 259 } 260 261 /*------------------------------------------------------------------------* 262 * usb_resume 263 *------------------------------------------------------------------------*/ 264 static int 265 usb_resume(device_t dev) 266 { 267 struct usb_bus *bus = device_get_softc(dev); 268 269 DPRINTF("\n"); 270 271 if (bus == NULL) { 272 /* was never setup properly */ 273 return (0); 274 } 275 276 USB_BUS_LOCK(bus); 277 usb_proc_msignal(&bus->explore_proc, 278 &bus->resume_msg[0], &bus->resume_msg[1]); 279 USB_BUS_UNLOCK(bus); 280 281 return (0); 282 } 283 284 /*------------------------------------------------------------------------* 285 * usb_shutdown 286 *------------------------------------------------------------------------*/ 287 static int 288 usb_shutdown(device_t dev) 289 { 290 struct usb_bus *bus = device_get_softc(dev); 291 292 DPRINTF("\n"); 293 294 if (bus == NULL) { 295 /* was never setup properly */ 296 return (0); 297 } 298 299 device_printf(bus->bdev, "Controller shutdown\n"); 300 301 USB_BUS_LOCK(bus); 302 usb_proc_msignal(&bus->explore_proc, 303 &bus->shutdown_msg[0], &bus->shutdown_msg[1]); 304 if (usb_no_shutdown_wait == 0) { 305 /* wait for shutdown callback to be executed */ 306 usb_proc_mwait(&bus->explore_proc, 307 &bus->shutdown_msg[0], &bus->shutdown_msg[1]); 308 } 309 USB_BUS_UNLOCK(bus); 310 311 device_printf(bus->bdev, "Controller shutdown complete\n"); 312 313 return (0); 314 } 315 316 /*------------------------------------------------------------------------* 317 * usb_bus_explore 318 * 319 * This function is used to explore the device tree from the root. 320 *------------------------------------------------------------------------*/ 321 static void 322 usb_bus_explore(struct usb_proc_msg *pm) 323 { 324 struct usb_bus *bus; 325 struct usb_device *udev; 326 327 bus = ((struct usb_bus_msg *)pm)->bus; 328 udev = bus->devices[USB_ROOT_HUB_ADDR]; 329 330 if (bus->no_explore != 0) 331 return; 332 333 if (udev && udev->hub) { 334 335 if (bus->do_probe) { 336 bus->do_probe = 0; 337 bus->driver_added_refcount++; 338 } 339 if (bus->driver_added_refcount == 0) { 340 /* avoid zero, hence that is memory default */ 341 bus->driver_added_refcount = 1; 342 } 343 344 #ifdef DDB 345 /* 346 * The following three lines of code are only here to 347 * recover from DDB: 348 */ 349 usb_proc_rewakeup(&bus->control_xfer_proc); 350 usb_proc_rewakeup(&bus->giant_callback_proc); 351 usb_proc_rewakeup(&bus->non_giant_callback_proc); 352 #endif 353 354 USB_BUS_UNLOCK(bus); 355 356 #if USB_HAVE_POWERD 357 /* 358 * First update the USB power state! 359 */ 360 usb_bus_powerd(bus); 361 #endif 362 /* Explore the Root USB HUB. */ 363 (udev->hub->explore) (udev); 364 USB_BUS_LOCK(bus); 365 } 366 usb_root_mount_rel(bus); 367 } 368 369 /*------------------------------------------------------------------------* 370 * usb_bus_detach 371 * 372 * This function is used to detach the device tree from the root. 373 *------------------------------------------------------------------------*/ 374 static void 375 usb_bus_detach(struct usb_proc_msg *pm) 376 { 377 struct usb_bus *bus; 378 struct usb_device *udev; 379 device_t dev; 380 381 bus = ((struct usb_bus_msg *)pm)->bus; 382 udev = bus->devices[USB_ROOT_HUB_ADDR]; 383 dev = bus->bdev; 384 /* clear the softc */ 385 device_set_softc(dev, NULL); 386 USB_BUS_UNLOCK(bus); 387 388 /* detach children first */ 389 mtx_lock(&Giant); 390 bus_generic_detach(dev); 391 mtx_unlock(&Giant); 392 393 /* 394 * Free USB device and all subdevices, if any. 395 */ 396 usb_free_device(udev, 0); 397 398 USB_BUS_LOCK(bus); 399 /* clear bdev variable last */ 400 bus->bdev = NULL; 401 } 402 403 /*------------------------------------------------------------------------* 404 * usb_bus_suspend 405 * 406 * This function is used to suspend the USB contoller. 407 *------------------------------------------------------------------------*/ 408 static void 409 usb_bus_suspend(struct usb_proc_msg *pm) 410 { 411 struct usb_bus *bus; 412 struct usb_device *udev; 413 usb_error_t err; 414 415 bus = ((struct usb_bus_msg *)pm)->bus; 416 udev = bus->devices[USB_ROOT_HUB_ADDR]; 417 418 if (udev == NULL || bus->bdev == NULL) 419 return; 420 421 USB_BUS_UNLOCK(bus); 422 423 /* 424 * We use the shutdown event here because the suspend and 425 * resume events are reserved for the USB port suspend and 426 * resume. The USB system suspend is implemented like full 427 * shutdown and all connected USB devices will be disconnected 428 * subsequently. At resume all USB devices will be 429 * re-connected again. 430 */ 431 432 bus_generic_shutdown(bus->bdev); 433 434 usbd_enum_lock(udev); 435 436 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX); 437 if (err) 438 device_printf(bus->bdev, "Could not unconfigure root HUB\n"); 439 440 USB_BUS_LOCK(bus); 441 bus->hw_power_state = 0; 442 bus->no_explore = 1; 443 USB_BUS_UNLOCK(bus); 444 445 if (bus->methods->set_hw_power != NULL) 446 (bus->methods->set_hw_power) (bus); 447 448 if (bus->methods->set_hw_power_sleep != NULL) 449 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SUSPEND); 450 451 usbd_enum_unlock(udev); 452 453 USB_BUS_LOCK(bus); 454 } 455 456 /*------------------------------------------------------------------------* 457 * usb_bus_resume 458 * 459 * This function is used to resume the USB contoller. 460 *------------------------------------------------------------------------*/ 461 static void 462 usb_bus_resume(struct usb_proc_msg *pm) 463 { 464 struct usb_bus *bus; 465 struct usb_device *udev; 466 usb_error_t err; 467 468 bus = ((struct usb_bus_msg *)pm)->bus; 469 udev = bus->devices[USB_ROOT_HUB_ADDR]; 470 471 if (udev == NULL || bus->bdev == NULL) 472 return; 473 474 USB_BUS_UNLOCK(bus); 475 476 usbd_enum_lock(udev); 477 #if 0 478 DEVMETHOD(usb_take_controller, NULL); /* dummy */ 479 #endif 480 USB_TAKE_CONTROLLER(device_get_parent(bus->bdev)); 481 482 USB_BUS_LOCK(bus); 483 bus->hw_power_state = 484 USB_HW_POWER_CONTROL | 485 USB_HW_POWER_BULK | 486 USB_HW_POWER_INTERRUPT | 487 USB_HW_POWER_ISOC | 488 USB_HW_POWER_NON_ROOT_HUB; 489 bus->no_explore = 0; 490 USB_BUS_UNLOCK(bus); 491 492 if (bus->methods->set_hw_power_sleep != NULL) 493 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_RESUME); 494 495 if (bus->methods->set_hw_power != NULL) 496 (bus->methods->set_hw_power) (bus); 497 498 /* restore USB configuration to index 0 */ 499 err = usbd_set_config_index(udev, 0); 500 if (err) 501 device_printf(bus->bdev, "Could not configure root HUB\n"); 502 503 /* probe and attach */ 504 err = usb_probe_and_attach(udev, USB_IFACE_INDEX_ANY); 505 if (err) { 506 device_printf(bus->bdev, "Could not probe and " 507 "attach root HUB\n"); 508 } 509 510 usbd_enum_unlock(udev); 511 512 USB_BUS_LOCK(bus); 513 } 514 515 /*------------------------------------------------------------------------* 516 * usb_bus_shutdown 517 * 518 * This function is used to shutdown the USB contoller. 519 *------------------------------------------------------------------------*/ 520 static void 521 usb_bus_shutdown(struct usb_proc_msg *pm) 522 { 523 struct usb_bus *bus; 524 struct usb_device *udev; 525 usb_error_t err; 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 bus_generic_shutdown(bus->bdev); 536 537 usbd_enum_lock(udev); 538 539 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX); 540 if (err) 541 device_printf(bus->bdev, "Could not unconfigure root HUB\n"); 542 543 USB_BUS_LOCK(bus); 544 bus->hw_power_state = 0; 545 bus->no_explore = 1; 546 USB_BUS_UNLOCK(bus); 547 548 if (bus->methods->set_hw_power != NULL) 549 (bus->methods->set_hw_power) (bus); 550 551 if (bus->methods->set_hw_power_sleep != NULL) 552 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SHUTDOWN); 553 554 usbd_enum_unlock(udev); 555 556 USB_BUS_LOCK(bus); 557 } 558 559 static void 560 usb_power_wdog(void *arg) 561 { 562 struct usb_bus *bus = arg; 563 564 USB_BUS_LOCK_ASSERT(bus, MA_OWNED); 565 566 usb_callout_reset(&bus->power_wdog, 567 4 * hz, usb_power_wdog, arg); 568 569 #ifdef DDB 570 /* 571 * The following line of code is only here to recover from 572 * DDB: 573 */ 574 usb_proc_rewakeup(&bus->explore_proc); /* recover from DDB */ 575 #endif 576 577 #if USB_HAVE_POWERD 578 USB_BUS_UNLOCK(bus); 579 580 usb_bus_power_update(bus); 581 582 USB_BUS_LOCK(bus); 583 #endif 584 } 585 586 /*------------------------------------------------------------------------* 587 * usb_bus_attach 588 * 589 * This function attaches USB in context of the explore thread. 590 *------------------------------------------------------------------------*/ 591 static void 592 usb_bus_attach(struct usb_proc_msg *pm) 593 { 594 struct usb_bus *bus; 595 struct usb_device *child; 596 device_t dev; 597 usb_error_t err; 598 enum usb_dev_speed speed; 599 600 bus = ((struct usb_bus_msg *)pm)->bus; 601 dev = bus->bdev; 602 603 DPRINTF("\n"); 604 605 switch (bus->usbrev) { 606 case USB_REV_1_0: 607 speed = USB_SPEED_FULL; 608 device_printf(bus->bdev, "12Mbps Full Speed USB v1.0\n"); 609 break; 610 611 case USB_REV_1_1: 612 speed = USB_SPEED_FULL; 613 device_printf(bus->bdev, "12Mbps Full Speed USB v1.1\n"); 614 break; 615 616 case USB_REV_2_0: 617 speed = USB_SPEED_HIGH; 618 device_printf(bus->bdev, "480Mbps High Speed USB v2.0\n"); 619 break; 620 621 case USB_REV_2_5: 622 speed = USB_SPEED_VARIABLE; 623 device_printf(bus->bdev, "480Mbps Wireless USB v2.5\n"); 624 break; 625 626 case USB_REV_3_0: 627 speed = USB_SPEED_SUPER; 628 device_printf(bus->bdev, "5.0Gbps Super Speed USB v3.0\n"); 629 break; 630 631 default: 632 device_printf(bus->bdev, "Unsupported USB revision\n"); 633 usb_root_mount_rel(bus); 634 return; 635 } 636 637 /* default power_mask value */ 638 bus->hw_power_state = 639 USB_HW_POWER_CONTROL | 640 USB_HW_POWER_BULK | 641 USB_HW_POWER_INTERRUPT | 642 USB_HW_POWER_ISOC | 643 USB_HW_POWER_NON_ROOT_HUB; 644 645 USB_BUS_UNLOCK(bus); 646 647 /* make sure power is set at least once */ 648 649 if (bus->methods->set_hw_power != NULL) { 650 (bus->methods->set_hw_power) (bus); 651 } 652 653 /* allocate the Root USB device */ 654 655 child = usb_alloc_device(bus->bdev, bus, NULL, 0, 0, 1, 656 speed, USB_MODE_HOST); 657 if (child) { 658 err = usb_probe_and_attach(child, 659 USB_IFACE_INDEX_ANY); 660 if (!err) { 661 if ((bus->devices[USB_ROOT_HUB_ADDR] == NULL) || 662 (bus->devices[USB_ROOT_HUB_ADDR]->hub == NULL)) { 663 err = USB_ERR_NO_ROOT_HUB; 664 } 665 } 666 } else { 667 err = USB_ERR_NOMEM; 668 } 669 670 USB_BUS_LOCK(bus); 671 672 if (err) { 673 device_printf(bus->bdev, "Root HUB problem, error=%s\n", 674 usbd_errstr(err)); 675 usb_root_mount_rel(bus); 676 } 677 678 /* set softc - we are ready */ 679 device_set_softc(dev, bus); 680 681 /* start watchdog */ 682 usb_power_wdog(bus); 683 } 684 685 /*------------------------------------------------------------------------* 686 * usb_attach_sub 687 * 688 * This function creates a thread which runs the USB attach code. 689 *------------------------------------------------------------------------*/ 690 static void 691 usb_attach_sub(device_t dev, struct usb_bus *bus) 692 { 693 const char *pname = device_get_nameunit(dev); 694 695 mtx_lock(&Giant); 696 if (usb_devclass_ptr == NULL) 697 usb_devclass_ptr = devclass_find("usbus"); 698 mtx_unlock(&Giant); 699 700 #if USB_HAVE_PF 701 usbpf_attach(bus); 702 #endif 703 /* Initialise USB process messages */ 704 bus->explore_msg[0].hdr.pm_callback = &usb_bus_explore; 705 bus->explore_msg[0].bus = bus; 706 bus->explore_msg[1].hdr.pm_callback = &usb_bus_explore; 707 bus->explore_msg[1].bus = bus; 708 709 bus->detach_msg[0].hdr.pm_callback = &usb_bus_detach; 710 bus->detach_msg[0].bus = bus; 711 bus->detach_msg[1].hdr.pm_callback = &usb_bus_detach; 712 bus->detach_msg[1].bus = bus; 713 714 bus->attach_msg[0].hdr.pm_callback = &usb_bus_attach; 715 bus->attach_msg[0].bus = bus; 716 bus->attach_msg[1].hdr.pm_callback = &usb_bus_attach; 717 bus->attach_msg[1].bus = bus; 718 719 bus->suspend_msg[0].hdr.pm_callback = &usb_bus_suspend; 720 bus->suspend_msg[0].bus = bus; 721 bus->suspend_msg[1].hdr.pm_callback = &usb_bus_suspend; 722 bus->suspend_msg[1].bus = bus; 723 724 bus->resume_msg[0].hdr.pm_callback = &usb_bus_resume; 725 bus->resume_msg[0].bus = bus; 726 bus->resume_msg[1].hdr.pm_callback = &usb_bus_resume; 727 bus->resume_msg[1].bus = bus; 728 729 bus->shutdown_msg[0].hdr.pm_callback = &usb_bus_shutdown; 730 bus->shutdown_msg[0].bus = bus; 731 bus->shutdown_msg[1].hdr.pm_callback = &usb_bus_shutdown; 732 bus->shutdown_msg[1].bus = bus; 733 734 /* Create USB explore and callback processes */ 735 736 if (usb_proc_create(&bus->giant_callback_proc, 737 &bus->bus_mtx, pname, USB_PRI_MED)) { 738 device_printf(dev, "WARNING: Creation of USB Giant " 739 "callback process failed.\n"); 740 } else if (usb_proc_create(&bus->non_giant_callback_proc, 741 &bus->bus_mtx, pname, USB_PRI_HIGH)) { 742 device_printf(dev, "WARNING: Creation of USB non-Giant " 743 "callback process failed.\n"); 744 } else if (usb_proc_create(&bus->explore_proc, 745 &bus->bus_mtx, pname, USB_PRI_MED)) { 746 device_printf(dev, "WARNING: Creation of USB explore " 747 "process failed.\n"); 748 } else if (usb_proc_create(&bus->control_xfer_proc, 749 &bus->bus_mtx, pname, USB_PRI_MED)) { 750 device_printf(dev, "WARNING: Creation of USB control transfer " 751 "process failed.\n"); 752 } else { 753 /* Get final attach going */ 754 USB_BUS_LOCK(bus); 755 usb_proc_msignal(&bus->explore_proc, 756 &bus->attach_msg[0], &bus->attach_msg[1]); 757 USB_BUS_UNLOCK(bus); 758 759 /* Do initial explore */ 760 usb_needs_explore(bus, 1); 761 } 762 } 763 764 SYSUNINIT(usb_bus_unload, SI_SUB_KLD, SI_ORDER_ANY, usb_bus_unload, NULL); 765 766 /*------------------------------------------------------------------------* 767 * usb_bus_mem_flush_all_cb 768 *------------------------------------------------------------------------*/ 769 #if USB_HAVE_BUSDMA 770 static void 771 usb_bus_mem_flush_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 772 struct usb_page *pg, usb_size_t size, usb_size_t align) 773 { 774 usb_pc_cpu_flush(pc); 775 } 776 #endif 777 778 /*------------------------------------------------------------------------* 779 * usb_bus_mem_flush_all - factored out code 780 *------------------------------------------------------------------------*/ 781 #if USB_HAVE_BUSDMA 782 void 783 usb_bus_mem_flush_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) 784 { 785 if (cb) { 786 cb(bus, &usb_bus_mem_flush_all_cb); 787 } 788 } 789 #endif 790 791 /*------------------------------------------------------------------------* 792 * usb_bus_mem_alloc_all_cb 793 *------------------------------------------------------------------------*/ 794 #if USB_HAVE_BUSDMA 795 static void 796 usb_bus_mem_alloc_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 797 struct usb_page *pg, usb_size_t size, usb_size_t align) 798 { 799 /* need to initialize the page cache */ 800 pc->tag_parent = bus->dma_parent_tag; 801 802 if (usb_pc_alloc_mem(pc, pg, size, align)) { 803 bus->alloc_failed = 1; 804 } 805 } 806 #endif 807 808 /*------------------------------------------------------------------------* 809 * usb_bus_mem_alloc_all - factored out code 810 * 811 * Returns: 812 * 0: Success 813 * Else: Failure 814 *------------------------------------------------------------------------*/ 815 uint8_t 816 usb_bus_mem_alloc_all(struct usb_bus *bus, bus_dma_tag_t dmat, 817 usb_bus_mem_cb_t *cb) 818 { 819 bus->alloc_failed = 0; 820 821 mtx_init(&bus->bus_mtx, device_get_nameunit(bus->parent), 822 NULL, MTX_DEF | MTX_RECURSE); 823 824 usb_callout_init_mtx(&bus->power_wdog, 825 &bus->bus_mtx, 0); 826 827 TAILQ_INIT(&bus->intr_q.head); 828 829 #if USB_HAVE_BUSDMA 830 usb_dma_tag_setup(bus->dma_parent_tag, bus->dma_tags, 831 dmat, &bus->bus_mtx, NULL, 32, USB_BUS_DMA_TAG_MAX); 832 #endif 833 if ((bus->devices_max > USB_MAX_DEVICES) || 834 (bus->devices_max < USB_MIN_DEVICES) || 835 (bus->devices == NULL)) { 836 DPRINTFN(0, "Devices field has not been " 837 "initialised properly\n"); 838 bus->alloc_failed = 1; /* failure */ 839 } 840 #if USB_HAVE_BUSDMA 841 if (cb) { 842 cb(bus, &usb_bus_mem_alloc_all_cb); 843 } 844 #endif 845 if (bus->alloc_failed) { 846 usb_bus_mem_free_all(bus, cb); 847 } 848 return (bus->alloc_failed); 849 } 850 851 /*------------------------------------------------------------------------* 852 * usb_bus_mem_free_all_cb 853 *------------------------------------------------------------------------*/ 854 #if USB_HAVE_BUSDMA 855 static void 856 usb_bus_mem_free_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 857 struct usb_page *pg, usb_size_t size, usb_size_t align) 858 { 859 usb_pc_free_mem(pc); 860 } 861 #endif 862 863 /*------------------------------------------------------------------------* 864 * usb_bus_mem_free_all - factored out code 865 *------------------------------------------------------------------------*/ 866 void 867 usb_bus_mem_free_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) 868 { 869 #if USB_HAVE_BUSDMA 870 if (cb) { 871 cb(bus, &usb_bus_mem_free_all_cb); 872 } 873 usb_dma_tag_unsetup(bus->dma_parent_tag); 874 #endif 875 876 mtx_destroy(&bus->bus_mtx); 877 } 878