| 1 | /* $NetBSD: usb.c,v 1.164 2016/08/14 14:42:22 skrll Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1998, 2002, 2008, 2012 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Lennart Augustsson (lennart@augustsson.net) at |
| 9 | * Carlstedt Research & Technology and Matthew R. Green (mrg@eterna.com.au). |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 22 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 24 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 30 | * POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | /* |
| 34 | * USB specifications and other documentation can be found at |
| 35 | * http://www.usb.org/developers/docs/ and |
| 36 | * http://www.usb.org/developers/devclass_docs/ |
| 37 | */ |
| 38 | |
| 39 | #include <sys/cdefs.h> |
| 40 | __KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.164 2016/08/14 14:42:22 skrll Exp $" ); |
| 41 | |
| 42 | #ifdef _KERNEL_OPT |
| 43 | #include "opt_usb.h" |
| 44 | #include "opt_compat_netbsd.h" |
| 45 | #endif |
| 46 | |
| 47 | #include <sys/param.h> |
| 48 | #include <sys/systm.h> |
| 49 | #include <sys/kernel.h> |
| 50 | #include <sys/kmem.h> |
| 51 | #include <sys/device.h> |
| 52 | #include <sys/kthread.h> |
| 53 | #include <sys/proc.h> |
| 54 | #include <sys/conf.h> |
| 55 | #include <sys/fcntl.h> |
| 56 | #include <sys/poll.h> |
| 57 | #include <sys/select.h> |
| 58 | #include <sys/vnode.h> |
| 59 | #include <sys/signalvar.h> |
| 60 | #include <sys/intr.h> |
| 61 | #include <sys/module.h> |
| 62 | #include <sys/mutex.h> |
| 63 | #include <sys/bus.h> |
| 64 | #include <sys/once.h> |
| 65 | #include <sys/atomic.h> |
| 66 | #include <sys/sysctl.h> |
| 67 | |
| 68 | #include <dev/usb/usb.h> |
| 69 | #include <dev/usb/usbdi.h> |
| 70 | #include <dev/usb/usbdi_util.h> |
| 71 | #include <dev/usb/usbdivar.h> |
| 72 | #include <dev/usb/usb_verbose.h> |
| 73 | #include <dev/usb/usb_quirks.h> |
| 74 | #include <dev/usb/usbhist.h> |
| 75 | |
| 76 | #if defined(USB_DEBUG) |
| 77 | |
| 78 | #ifndef USBHIST_SIZE |
| 79 | #define USBHIST_SIZE 50000 |
| 80 | #endif |
| 81 | |
| 82 | static struct kern_history_ent usbhistbuf[USBHIST_SIZE]; |
| 83 | USBHIST_DEFINE(usbhist) = KERNHIST_INITIALIZER(usbhist, usbhistbuf); |
| 84 | |
| 85 | #endif |
| 86 | |
| 87 | #define USB_DEV_MINOR 255 |
| 88 | |
| 89 | #ifdef USB_DEBUG |
| 90 | /* |
| 91 | * 0 - do usual exploration |
| 92 | * 1 - do not use timeout exploration |
| 93 | * >1 - do no exploration |
| 94 | */ |
| 95 | int usb_noexplore = 0; |
| 96 | |
| 97 | int usbdebug = 0; |
| 98 | SYSCTL_SETUP(sysctl_hw_usb_setup, "sysctl hw.usb setup" ) |
| 99 | { |
| 100 | int err; |
| 101 | const struct sysctlnode *rnode; |
| 102 | const struct sysctlnode *cnode; |
| 103 | |
| 104 | err = sysctl_createv(clog, 0, NULL, &rnode, |
| 105 | CTLFLAG_PERMANENT, CTLTYPE_NODE, "usb" , |
| 106 | SYSCTL_DESCR("usb global controls" ), |
| 107 | NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL); |
| 108 | |
| 109 | if (err) |
| 110 | goto fail; |
| 111 | |
| 112 | /* control debugging printfs */ |
| 113 | err = sysctl_createv(clog, 0, &rnode, &cnode, |
| 114 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, |
| 115 | "debug" , SYSCTL_DESCR("Enable debugging output" ), |
| 116 | NULL, 0, &usbdebug, sizeof(usbdebug), CTL_CREATE, CTL_EOL); |
| 117 | if (err) |
| 118 | goto fail; |
| 119 | |
| 120 | return; |
| 121 | fail: |
| 122 | aprint_error("%s: sysctl_createv failed (err = %d)\n" , __func__, err); |
| 123 | } |
| 124 | #else |
| 125 | #define usb_noexplore 0 |
| 126 | #endif |
| 127 | |
| 128 | #define DPRINTF(FMT,A,B,C,D) USBHIST_LOG(usbdebug,FMT,A,B,C,D) |
| 129 | #define DPRINTFN(N,FMT,A,B,C,D) USBHIST_LOGN(usbdebug,N,FMT,A,B,C,D) |
| 130 | |
| 131 | struct usb_softc { |
| 132 | #if 0 |
| 133 | device_t sc_dev; /* base device */ |
| 134 | #endif |
| 135 | struct usbd_bus *sc_bus; /* USB controller */ |
| 136 | struct usbd_port sc_port; /* dummy port for root hub */ |
| 137 | |
| 138 | struct lwp *sc_event_thread; |
| 139 | |
| 140 | char sc_dying; |
| 141 | }; |
| 142 | |
| 143 | struct usb_taskq { |
| 144 | TAILQ_HEAD(, usb_task) tasks; |
| 145 | kmutex_t lock; |
| 146 | kcondvar_t cv; |
| 147 | struct lwp *task_thread_lwp; |
| 148 | const char *name; |
| 149 | }; |
| 150 | |
| 151 | static struct usb_taskq usb_taskq[USB_NUM_TASKQS]; |
| 152 | |
| 153 | dev_type_open(usbopen); |
| 154 | dev_type_close(usbclose); |
| 155 | dev_type_read(usbread); |
| 156 | dev_type_ioctl(usbioctl); |
| 157 | dev_type_poll(usbpoll); |
| 158 | dev_type_kqfilter(usbkqfilter); |
| 159 | |
| 160 | const struct cdevsw usb_cdevsw = { |
| 161 | .d_open = usbopen, |
| 162 | .d_close = usbclose, |
| 163 | .d_read = usbread, |
| 164 | .d_write = nowrite, |
| 165 | .d_ioctl = usbioctl, |
| 166 | .d_stop = nostop, |
| 167 | .d_tty = notty, |
| 168 | .d_poll = usbpoll, |
| 169 | .d_mmap = nommap, |
| 170 | .d_kqfilter = usbkqfilter, |
| 171 | .d_discard = nodiscard, |
| 172 | .d_flag = D_OTHER |
| 173 | }; |
| 174 | |
| 175 | Static void usb_discover(struct usb_softc *); |
| 176 | Static void usb_create_event_thread(device_t); |
| 177 | Static void usb_event_thread(void *); |
| 178 | Static void usb_task_thread(void *); |
| 179 | |
| 180 | #define USB_MAX_EVENTS 100 |
| 181 | struct usb_event_q { |
| 182 | struct usb_event ue; |
| 183 | SIMPLEQ_ENTRY(usb_event_q) next; |
| 184 | }; |
| 185 | Static SIMPLEQ_HEAD(, usb_event_q) usb_events = |
| 186 | SIMPLEQ_HEAD_INITIALIZER(usb_events); |
| 187 | Static int usb_nevents = 0; |
| 188 | Static struct selinfo usb_selevent; |
| 189 | Static kmutex_t usb_event_lock; |
| 190 | Static kcondvar_t usb_event_cv; |
| 191 | Static proc_t *usb_async_proc; /* process that wants USB SIGIO */ |
| 192 | Static void *usb_async_sih; |
| 193 | Static int usb_dev_open = 0; |
| 194 | Static struct usb_event *usb_alloc_event(void); |
| 195 | Static void usb_free_event(struct usb_event *); |
| 196 | Static void usb_add_event(int, struct usb_event *); |
| 197 | Static int usb_get_next_event(struct usb_event *); |
| 198 | Static void usb_async_intr(void *); |
| 199 | Static void usb_soft_intr(void *); |
| 200 | |
| 201 | #ifdef COMPAT_30 |
| 202 | Static void usb_copy_old_devinfo(struct usb_device_info_old *, const struct usb_device_info *); |
| 203 | #endif |
| 204 | |
| 205 | Static const char *usbrev_str[] = USBREV_STR; |
| 206 | |
| 207 | static int usb_match(device_t, cfdata_t, void *); |
| 208 | static void usb_attach(device_t, device_t, void *); |
| 209 | static int usb_detach(device_t, int); |
| 210 | static int usb_activate(device_t, enum devact); |
| 211 | static void usb_childdet(device_t, device_t); |
| 212 | static int usb_once_init(void); |
| 213 | static void usb_doattach(device_t); |
| 214 | |
| 215 | extern struct cfdriver usb_cd; |
| 216 | |
| 217 | CFATTACH_DECL3_NEW(usb, sizeof(struct usb_softc), |
| 218 | usb_match, usb_attach, usb_detach, usb_activate, NULL, usb_childdet, |
| 219 | DVF_DETACH_SHUTDOWN); |
| 220 | |
| 221 | static const char *taskq_names[] = USB_TASKQ_NAMES; |
| 222 | |
| 223 | int |
| 224 | usb_match(device_t parent, cfdata_t match, void *aux) |
| 225 | { |
| 226 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 227 | |
| 228 | return UMATCH_GENERIC; |
| 229 | } |
| 230 | |
| 231 | void |
| 232 | usb_attach(device_t parent, device_t self, void *aux) |
| 233 | { |
| 234 | static ONCE_DECL(init_control); |
| 235 | struct usb_softc *sc = device_private(self); |
| 236 | int usbrev; |
| 237 | |
| 238 | sc->sc_bus = aux; |
| 239 | usbrev = sc->sc_bus->ub_revision; |
| 240 | |
| 241 | aprint_naive("\n" ); |
| 242 | aprint_normal(": USB revision %s" , usbrev_str[usbrev]); |
| 243 | switch (usbrev) { |
| 244 | case USBREV_1_0: |
| 245 | case USBREV_1_1: |
| 246 | case USBREV_2_0: |
| 247 | case USBREV_3_0: |
| 248 | break; |
| 249 | default: |
| 250 | aprint_error(", not supported\n" ); |
| 251 | sc->sc_dying = 1; |
| 252 | return; |
| 253 | } |
| 254 | aprint_normal("\n" ); |
| 255 | |
| 256 | /* XXX we should have our own level */ |
| 257 | sc->sc_bus->ub_soft = softint_establish(SOFTINT_USB | SOFTINT_MPSAFE, |
| 258 | usb_soft_intr, sc->sc_bus); |
| 259 | if (sc->sc_bus->ub_soft == NULL) { |
| 260 | aprint_error("%s: can't register softintr\n" , |
| 261 | device_xname(self)); |
| 262 | sc->sc_dying = 1; |
| 263 | return; |
| 264 | } |
| 265 | |
| 266 | sc->sc_bus->ub_methods->ubm_getlock(sc->sc_bus, &sc->sc_bus->ub_lock); |
| 267 | KASSERT(sc->sc_bus->ub_lock != NULL); |
| 268 | |
| 269 | RUN_ONCE(&init_control, usb_once_init); |
| 270 | config_interrupts(self, usb_doattach); |
| 271 | } |
| 272 | |
| 273 | static int |
| 274 | usb_once_init(void) |
| 275 | { |
| 276 | struct usb_taskq *taskq; |
| 277 | int i; |
| 278 | |
| 279 | USBHIST_LINK_STATIC(usbhist); |
| 280 | |
| 281 | selinit(&usb_selevent); |
| 282 | mutex_init(&usb_event_lock, MUTEX_DEFAULT, IPL_NONE); |
| 283 | cv_init(&usb_event_cv, "usbrea" ); |
| 284 | |
| 285 | for (i = 0; i < USB_NUM_TASKQS; i++) { |
| 286 | taskq = &usb_taskq[i]; |
| 287 | |
| 288 | TAILQ_INIT(&taskq->tasks); |
| 289 | /* |
| 290 | * Since USB task methods usb_{add,rem}_task are callable |
| 291 | * from any context, we have to make this lock a spinlock. |
| 292 | */ |
| 293 | mutex_init(&taskq->lock, MUTEX_DEFAULT, IPL_USB); |
| 294 | cv_init(&taskq->cv, "usbtsk" ); |
| 295 | taskq->name = taskq_names[i]; |
| 296 | if (kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, |
| 297 | usb_task_thread, taskq, &taskq->task_thread_lwp, |
| 298 | "%s" , taskq->name)) { |
| 299 | printf("unable to create task thread: %s\n" , taskq->name); |
| 300 | panic("usb_create_event_thread task" ); |
| 301 | } |
| 302 | /* |
| 303 | * XXX we should make sure these threads are alive before |
| 304 | * end up using them in usb_doattach(). |
| 305 | */ |
| 306 | } |
| 307 | return 0; |
| 308 | } |
| 309 | |
| 310 | static void |
| 311 | usb_doattach(device_t self) |
| 312 | { |
| 313 | struct usb_softc *sc = device_private(self); |
| 314 | struct usbd_device *dev; |
| 315 | usbd_status err; |
| 316 | int speed; |
| 317 | struct usb_event *ue; |
| 318 | |
| 319 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 320 | |
| 321 | sc->sc_bus->ub_usbctl = self; |
| 322 | sc->sc_port.up_power = USB_MAX_POWER; |
| 323 | |
| 324 | switch (sc->sc_bus->ub_revision) { |
| 325 | case USBREV_1_0: |
| 326 | case USBREV_1_1: |
| 327 | speed = USB_SPEED_FULL; |
| 328 | break; |
| 329 | case USBREV_2_0: |
| 330 | speed = USB_SPEED_HIGH; |
| 331 | break; |
| 332 | case USBREV_3_0: |
| 333 | speed = USB_SPEED_SUPER; |
| 334 | break; |
| 335 | default: |
| 336 | panic("usb_doattach" ); |
| 337 | } |
| 338 | |
| 339 | cv_init(&sc->sc_bus->ub_needsexplore_cv, "usbevt" ); |
| 340 | |
| 341 | ue = usb_alloc_event(); |
| 342 | ue->u.ue_ctrlr.ue_bus = device_unit(self); |
| 343 | usb_add_event(USB_EVENT_CTRLR_ATTACH, ue); |
| 344 | |
| 345 | err = usbd_new_device(self, sc->sc_bus, 0, speed, 0, |
| 346 | &sc->sc_port); |
| 347 | if (!err) { |
| 348 | dev = sc->sc_port.up_dev; |
| 349 | if (dev->ud_hub == NULL) { |
| 350 | sc->sc_dying = 1; |
| 351 | aprint_error("%s: root device is not a hub\n" , |
| 352 | device_xname(self)); |
| 353 | return; |
| 354 | } |
| 355 | sc->sc_bus->ub_roothub = dev; |
| 356 | usb_create_event_thread(self); |
| 357 | #if 1 |
| 358 | /* |
| 359 | * Turning this code off will delay attachment of USB devices |
| 360 | * until the USB event thread is running, which means that |
| 361 | * the keyboard will not work until after cold boot. |
| 362 | */ |
| 363 | if (cold && (device_cfdata(self)->cf_flags & 1)) |
| 364 | dev->ud_hub->uh_explore(sc->sc_bus->ub_roothub); |
| 365 | #endif |
| 366 | } else { |
| 367 | aprint_error("%s: root hub problem, error=%s\n" , |
| 368 | device_xname(self), usbd_errstr(err)); |
| 369 | sc->sc_dying = 1; |
| 370 | } |
| 371 | |
| 372 | config_pending_incr(self); |
| 373 | |
| 374 | if (!pmf_device_register(self, NULL, NULL)) |
| 375 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 376 | |
| 377 | usb_async_sih = softint_establish(SOFTINT_CLOCK | SOFTINT_MPSAFE, |
| 378 | usb_async_intr, NULL); |
| 379 | |
| 380 | return; |
| 381 | } |
| 382 | |
| 383 | void |
| 384 | usb_create_event_thread(device_t self) |
| 385 | { |
| 386 | struct usb_softc *sc = device_private(self); |
| 387 | |
| 388 | if (kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, |
| 389 | usb_event_thread, sc, &sc->sc_event_thread, |
| 390 | "%s" , device_xname(self))) { |
| 391 | printf("%s: unable to create event thread for\n" , |
| 392 | device_xname(self)); |
| 393 | panic("usb_create_event_thread" ); |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * Add a task to be performed by the task thread. This function can be |
| 399 | * called from any context and the task will be executed in a process |
| 400 | * context ASAP. |
| 401 | */ |
| 402 | void |
| 403 | usb_add_task(struct usbd_device *dev, struct usb_task *task, int queue) |
| 404 | { |
| 405 | struct usb_taskq *taskq; |
| 406 | |
| 407 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 408 | |
| 409 | KASSERT(0 <= queue); |
| 410 | KASSERT(queue < USB_NUM_TASKQS); |
| 411 | taskq = &usb_taskq[queue]; |
| 412 | mutex_enter(&taskq->lock); |
| 413 | if (atomic_cas_uint(&task->queue, USB_NUM_TASKQS, queue) == |
| 414 | USB_NUM_TASKQS) { |
| 415 | DPRINTFN(2, "task=%p" , task, 0, 0, 0); |
| 416 | TAILQ_INSERT_TAIL(&taskq->tasks, task, next); |
| 417 | cv_signal(&taskq->cv); |
| 418 | } else { |
| 419 | DPRINTFN(2, "task=%p on q" , task, 0, 0, 0); |
| 420 | } |
| 421 | mutex_exit(&taskq->lock); |
| 422 | } |
| 423 | |
| 424 | /* |
| 425 | * XXX This does not wait for completion! Most uses need such an |
| 426 | * operation. Urgh... |
| 427 | */ |
| 428 | void |
| 429 | usb_rem_task(struct usbd_device *dev, struct usb_task *task) |
| 430 | { |
| 431 | unsigned queue; |
| 432 | |
| 433 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 434 | |
| 435 | while ((queue = task->queue) != USB_NUM_TASKQS) { |
| 436 | struct usb_taskq *taskq = &usb_taskq[queue]; |
| 437 | mutex_enter(&taskq->lock); |
| 438 | if (__predict_true(task->queue == queue)) { |
| 439 | TAILQ_REMOVE(&taskq->tasks, task, next); |
| 440 | task->queue = USB_NUM_TASKQS; |
| 441 | mutex_exit(&taskq->lock); |
| 442 | break; |
| 443 | } |
| 444 | mutex_exit(&taskq->lock); |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | void |
| 449 | usb_event_thread(void *arg) |
| 450 | { |
| 451 | struct usb_softc *sc = arg; |
| 452 | |
| 453 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 454 | |
| 455 | /* |
| 456 | * In case this controller is a companion controller to an |
| 457 | * EHCI controller we need to wait until the EHCI controller |
| 458 | * has grabbed the port. |
| 459 | * XXX It would be nicer to do this with a tsleep(), but I don't |
| 460 | * know how to synchronize the creation of the threads so it |
| 461 | * will work. |
| 462 | */ |
| 463 | usb_delay_ms(sc->sc_bus, 500); |
| 464 | |
| 465 | /* Make sure first discover does something. */ |
| 466 | mutex_enter(sc->sc_bus->ub_lock); |
| 467 | sc->sc_bus->ub_needsexplore = 1; |
| 468 | usb_discover(sc); |
| 469 | mutex_exit(sc->sc_bus->ub_lock); |
| 470 | config_pending_decr(sc->sc_bus->ub_usbctl); |
| 471 | |
| 472 | mutex_enter(sc->sc_bus->ub_lock); |
| 473 | while (!sc->sc_dying) { |
| 474 | if (usb_noexplore < 2) |
| 475 | usb_discover(sc); |
| 476 | |
| 477 | cv_timedwait(&sc->sc_bus->ub_needsexplore_cv, |
| 478 | sc->sc_bus->ub_lock, usb_noexplore ? 0 : hz * 60); |
| 479 | |
| 480 | DPRINTFN(2, "sc %p woke up" , sc, 0, 0, 0); |
| 481 | } |
| 482 | sc->sc_event_thread = NULL; |
| 483 | |
| 484 | /* In case parent is waiting for us to exit. */ |
| 485 | cv_signal(&sc->sc_bus->ub_needsexplore_cv); |
| 486 | mutex_exit(sc->sc_bus->ub_lock); |
| 487 | |
| 488 | DPRINTF("sc %p exit" , sc, 0, 0, 0); |
| 489 | kthread_exit(0); |
| 490 | } |
| 491 | |
| 492 | void |
| 493 | usb_task_thread(void *arg) |
| 494 | { |
| 495 | struct usb_task *task; |
| 496 | struct usb_taskq *taskq; |
| 497 | bool mpsafe; |
| 498 | |
| 499 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 500 | |
| 501 | taskq = arg; |
| 502 | DPRINTF("start taskq %p" , taskq, 0, 0, 0); |
| 503 | |
| 504 | mutex_enter(&taskq->lock); |
| 505 | for (;;) { |
| 506 | task = TAILQ_FIRST(&taskq->tasks); |
| 507 | if (task == NULL) { |
| 508 | cv_wait(&taskq->cv, &taskq->lock); |
| 509 | task = TAILQ_FIRST(&taskq->tasks); |
| 510 | } |
| 511 | DPRINTFN(2, "woke up task=%p" , task, 0, 0, 0); |
| 512 | if (task != NULL) { |
| 513 | mpsafe = ISSET(task->flags, USB_TASKQ_MPSAFE); |
| 514 | TAILQ_REMOVE(&taskq->tasks, task, next); |
| 515 | task->queue = USB_NUM_TASKQS; |
| 516 | mutex_exit(&taskq->lock); |
| 517 | |
| 518 | if (!mpsafe) |
| 519 | KERNEL_LOCK(1, curlwp); |
| 520 | task->fun(task->arg); |
| 521 | /* Can't dereference task after this point. */ |
| 522 | if (!mpsafe) |
| 523 | KERNEL_UNLOCK_ONE(curlwp); |
| 524 | |
| 525 | mutex_enter(&taskq->lock); |
| 526 | } |
| 527 | } |
| 528 | mutex_exit(&taskq->lock); |
| 529 | } |
| 530 | |
| 531 | int |
| 532 | usbctlprint(void *aux, const char *pnp) |
| 533 | { |
| 534 | /* only "usb"es can attach to host controllers */ |
| 535 | if (pnp) |
| 536 | aprint_normal("usb at %s" , pnp); |
| 537 | |
| 538 | return UNCONF; |
| 539 | } |
| 540 | |
| 541 | int |
| 542 | usbopen(dev_t dev, int flag, int mode, struct lwp *l) |
| 543 | { |
| 544 | int unit = minor(dev); |
| 545 | struct usb_softc *sc; |
| 546 | |
| 547 | if (unit == USB_DEV_MINOR) { |
| 548 | if (usb_dev_open) |
| 549 | return EBUSY; |
| 550 | usb_dev_open = 1; |
| 551 | mutex_enter(proc_lock); |
| 552 | usb_async_proc = 0; |
| 553 | mutex_exit(proc_lock); |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | sc = device_lookup_private(&usb_cd, unit); |
| 558 | if (!sc) |
| 559 | return ENXIO; |
| 560 | |
| 561 | if (sc->sc_dying) |
| 562 | return EIO; |
| 563 | |
| 564 | return 0; |
| 565 | } |
| 566 | |
| 567 | int |
| 568 | usbread(dev_t dev, struct uio *uio, int flag) |
| 569 | { |
| 570 | struct usb_event *ue; |
| 571 | #ifdef COMPAT_30 |
| 572 | struct usb_event_old *ueo = NULL; /* XXXGCC */ |
| 573 | int useold = 0; |
| 574 | #endif |
| 575 | int error, n; |
| 576 | |
| 577 | if (minor(dev) != USB_DEV_MINOR) |
| 578 | return ENXIO; |
| 579 | |
| 580 | switch (uio->uio_resid) { |
| 581 | #ifdef COMPAT_30 |
| 582 | case sizeof(struct usb_event_old): |
| 583 | ueo = kmem_zalloc(sizeof(struct usb_event_old), KM_SLEEP); |
| 584 | useold = 1; |
| 585 | /* FALLTHRU */ |
| 586 | #endif |
| 587 | case sizeof(struct usb_event): |
| 588 | ue = usb_alloc_event(); |
| 589 | break; |
| 590 | default: |
| 591 | return EINVAL; |
| 592 | } |
| 593 | |
| 594 | error = 0; |
| 595 | mutex_enter(&usb_event_lock); |
| 596 | for (;;) { |
| 597 | n = usb_get_next_event(ue); |
| 598 | if (n != 0) |
| 599 | break; |
| 600 | if (flag & IO_NDELAY) { |
| 601 | error = EWOULDBLOCK; |
| 602 | break; |
| 603 | } |
| 604 | error = cv_wait_sig(&usb_event_cv, &usb_event_lock); |
| 605 | if (error) |
| 606 | break; |
| 607 | } |
| 608 | mutex_exit(&usb_event_lock); |
| 609 | if (!error) { |
| 610 | #ifdef COMPAT_30 |
| 611 | if (useold) { /* copy fields to old struct */ |
| 612 | ueo->ue_type = ue->ue_type; |
| 613 | memcpy(&ueo->ue_time, &ue->ue_time, |
| 614 | sizeof(struct timespec)); |
| 615 | switch (ue->ue_type) { |
| 616 | case USB_EVENT_DEVICE_ATTACH: |
| 617 | case USB_EVENT_DEVICE_DETACH: |
| 618 | usb_copy_old_devinfo(&ueo->u.ue_device, &ue->u.ue_device); |
| 619 | break; |
| 620 | |
| 621 | case USB_EVENT_CTRLR_ATTACH: |
| 622 | case USB_EVENT_CTRLR_DETACH: |
| 623 | ueo->u.ue_ctrlr.ue_bus=ue->u.ue_ctrlr.ue_bus; |
| 624 | break; |
| 625 | |
| 626 | case USB_EVENT_DRIVER_ATTACH: |
| 627 | case USB_EVENT_DRIVER_DETACH: |
| 628 | ueo->u.ue_driver.ue_cookie=ue->u.ue_driver.ue_cookie; |
| 629 | memcpy(ueo->u.ue_driver.ue_devname, |
| 630 | ue->u.ue_driver.ue_devname, |
| 631 | sizeof(ue->u.ue_driver.ue_devname)); |
| 632 | break; |
| 633 | default: |
| 634 | ; |
| 635 | } |
| 636 | |
| 637 | error = uiomove((void *)ueo, sizeof(*ueo), uio); |
| 638 | } else |
| 639 | #endif |
| 640 | error = uiomove((void *)ue, sizeof(*ue), uio); |
| 641 | } |
| 642 | usb_free_event(ue); |
| 643 | #ifdef COMPAT_30 |
| 644 | if (useold) |
| 645 | kmem_free(ueo, sizeof(struct usb_event_old)); |
| 646 | #endif |
| 647 | |
| 648 | return error; |
| 649 | } |
| 650 | |
| 651 | int |
| 652 | usbclose(dev_t dev, int flag, int mode, |
| 653 | struct lwp *l) |
| 654 | { |
| 655 | int unit = minor(dev); |
| 656 | |
| 657 | if (unit == USB_DEV_MINOR) { |
| 658 | mutex_enter(proc_lock); |
| 659 | usb_async_proc = 0; |
| 660 | mutex_exit(proc_lock); |
| 661 | usb_dev_open = 0; |
| 662 | } |
| 663 | |
| 664 | return 0; |
| 665 | } |
| 666 | |
| 667 | int |
| 668 | usbioctl(dev_t devt, u_long cmd, void *data, int flag, struct lwp *l) |
| 669 | { |
| 670 | struct usb_softc *sc; |
| 671 | int unit = minor(devt); |
| 672 | |
| 673 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 674 | |
| 675 | if (unit == USB_DEV_MINOR) { |
| 676 | switch (cmd) { |
| 677 | case FIONBIO: |
| 678 | /* All handled in the upper FS layer. */ |
| 679 | return 0; |
| 680 | |
| 681 | case FIOASYNC: |
| 682 | mutex_enter(proc_lock); |
| 683 | if (*(int *)data) |
| 684 | usb_async_proc = l->l_proc; |
| 685 | else |
| 686 | usb_async_proc = 0; |
| 687 | mutex_exit(proc_lock); |
| 688 | return 0; |
| 689 | |
| 690 | default: |
| 691 | return EINVAL; |
| 692 | } |
| 693 | } |
| 694 | |
| 695 | sc = device_lookup_private(&usb_cd, unit); |
| 696 | |
| 697 | if (sc->sc_dying) |
| 698 | return EIO; |
| 699 | |
| 700 | int error = 0; |
| 701 | DPRINTF("cmd %#x" , cmd, 0, 0, 0); |
| 702 | switch (cmd) { |
| 703 | #ifdef USB_DEBUG |
| 704 | case USB_SETDEBUG: |
| 705 | if (!(flag & FWRITE)) |
| 706 | return EBADF; |
| 707 | usbdebug = ((*(int *)data) & 0x000000ff); |
| 708 | break; |
| 709 | #endif /* USB_DEBUG */ |
| 710 | case USB_REQUEST: |
| 711 | { |
| 712 | struct usb_ctl_request *ur = (void *)data; |
| 713 | int len = UGETW(ur->ucr_request.wLength); |
| 714 | struct iovec iov; |
| 715 | struct uio uio; |
| 716 | void *ptr = 0; |
| 717 | int addr = ur->ucr_addr; |
| 718 | usbd_status err; |
| 719 | |
| 720 | if (!(flag & FWRITE)) { |
| 721 | error = EBADF; |
| 722 | goto fail; |
| 723 | } |
| 724 | |
| 725 | DPRINTF("USB_REQUEST addr=%d len=%d" , addr, len, 0, 0); |
| 726 | if (len < 0 || len > 32768) { |
| 727 | error = EINVAL; |
| 728 | goto fail; |
| 729 | } |
| 730 | if (addr < 0 || addr >= USB_MAX_DEVICES || |
| 731 | sc->sc_bus->ub_devices[addr] == NULL) { |
| 732 | error = EINVAL; |
| 733 | goto fail; |
| 734 | } |
| 735 | if (len != 0) { |
| 736 | iov.iov_base = (void *)ur->ucr_data; |
| 737 | iov.iov_len = len; |
| 738 | uio.uio_iov = &iov; |
| 739 | uio.uio_iovcnt = 1; |
| 740 | uio.uio_resid = len; |
| 741 | uio.uio_offset = 0; |
| 742 | uio.uio_rw = |
| 743 | ur->ucr_request.bmRequestType & UT_READ ? |
| 744 | UIO_READ : UIO_WRITE; |
| 745 | uio.uio_vmspace = l->l_proc->p_vmspace; |
| 746 | ptr = kmem_alloc(len, KM_SLEEP); |
| 747 | if (uio.uio_rw == UIO_WRITE) { |
| 748 | error = uiomove(ptr, len, &uio); |
| 749 | if (error) |
| 750 | goto ret; |
| 751 | } |
| 752 | } |
| 753 | err = usbd_do_request_flags(sc->sc_bus->ub_devices[addr], |
| 754 | &ur->ucr_request, ptr, ur->ucr_flags, &ur->ucr_actlen, |
| 755 | USBD_DEFAULT_TIMEOUT); |
| 756 | if (err) { |
| 757 | error = EIO; |
| 758 | goto ret; |
| 759 | } |
| 760 | if (len > ur->ucr_actlen) |
| 761 | len = ur->ucr_actlen; |
| 762 | if (len != 0) { |
| 763 | if (uio.uio_rw == UIO_READ) { |
| 764 | error = uiomove(ptr, len, &uio); |
| 765 | if (error) |
| 766 | goto ret; |
| 767 | } |
| 768 | } |
| 769 | ret: |
| 770 | if (ptr) { |
| 771 | len = UGETW(ur->ucr_request.wLength); |
| 772 | kmem_free(ptr, len); |
| 773 | } |
| 774 | } |
| 775 | |
| 776 | case USB_DEVICEINFO: |
| 777 | { |
| 778 | struct usbd_device *dev; |
| 779 | struct usb_device_info *di = (void *)data; |
| 780 | int addr = di->udi_addr; |
| 781 | |
| 782 | if (addr < 0 || addr >= USB_MAX_DEVICES) { |
| 783 | error = EINVAL; |
| 784 | goto fail; |
| 785 | } |
| 786 | if ((dev = sc->sc_bus->ub_devices[addr]) == NULL) { |
| 787 | error = ENXIO; |
| 788 | goto fail; |
| 789 | } |
| 790 | usbd_fill_deviceinfo(dev, di, 1); |
| 791 | break; |
| 792 | } |
| 793 | |
| 794 | #ifdef COMPAT_30 |
| 795 | case USB_DEVICEINFO_OLD: |
| 796 | { |
| 797 | struct usbd_device *dev; |
| 798 | struct usb_device_info_old *di = (void *)data; |
| 799 | int addr = di->udi_addr; |
| 800 | |
| 801 | if (addr < 1 || addr >= USB_MAX_DEVICES) { |
| 802 | error = EINVAL; |
| 803 | goto fail; |
| 804 | } |
| 805 | if ((dev = sc->sc_bus->ub_devices[addr]) == NULL) { |
| 806 | error = ENXIO; |
| 807 | goto fail; |
| 808 | } |
| 809 | usbd_fill_deviceinfo_old(dev, di, 1); |
| 810 | break; |
| 811 | } |
| 812 | #endif |
| 813 | |
| 814 | case USB_DEVICESTATS: |
| 815 | *(struct usb_device_stats *)data = sc->sc_bus->ub_stats; |
| 816 | break; |
| 817 | |
| 818 | default: |
| 819 | error = EINVAL; |
| 820 | } |
| 821 | |
| 822 | fail: |
| 823 | |
| 824 | DPRINTF("... done (error = %d)" , error, 0, 0, 0); |
| 825 | |
| 826 | return error; |
| 827 | } |
| 828 | |
| 829 | int |
| 830 | usbpoll(dev_t dev, int events, struct lwp *l) |
| 831 | { |
| 832 | int revents, mask; |
| 833 | |
| 834 | if (minor(dev) == USB_DEV_MINOR) { |
| 835 | revents = 0; |
| 836 | mask = POLLIN | POLLRDNORM; |
| 837 | |
| 838 | mutex_enter(&usb_event_lock); |
| 839 | if (events & mask && usb_nevents > 0) |
| 840 | revents |= events & mask; |
| 841 | if (revents == 0 && events & mask) |
| 842 | selrecord(l, &usb_selevent); |
| 843 | mutex_exit(&usb_event_lock); |
| 844 | |
| 845 | return revents; |
| 846 | } else { |
| 847 | return 0; |
| 848 | } |
| 849 | } |
| 850 | |
| 851 | static void |
| 852 | filt_usbrdetach(struct knote *kn) |
| 853 | { |
| 854 | |
| 855 | mutex_enter(&usb_event_lock); |
| 856 | SLIST_REMOVE(&usb_selevent.sel_klist, kn, knote, kn_selnext); |
| 857 | mutex_exit(&usb_event_lock); |
| 858 | } |
| 859 | |
| 860 | static int |
| 861 | filt_usbread(struct knote *kn, long hint) |
| 862 | { |
| 863 | |
| 864 | if (usb_nevents == 0) |
| 865 | return 0; |
| 866 | |
| 867 | kn->kn_data = sizeof(struct usb_event); |
| 868 | return 1; |
| 869 | } |
| 870 | |
| 871 | static const struct filterops usbread_filtops = |
| 872 | { 1, NULL, filt_usbrdetach, filt_usbread }; |
| 873 | |
| 874 | int |
| 875 | usbkqfilter(dev_t dev, struct knote *kn) |
| 876 | { |
| 877 | struct klist *klist; |
| 878 | |
| 879 | switch (kn->kn_filter) { |
| 880 | case EVFILT_READ: |
| 881 | if (minor(dev) != USB_DEV_MINOR) |
| 882 | return 1; |
| 883 | klist = &usb_selevent.sel_klist; |
| 884 | kn->kn_fop = &usbread_filtops; |
| 885 | break; |
| 886 | |
| 887 | default: |
| 888 | return EINVAL; |
| 889 | } |
| 890 | |
| 891 | kn->kn_hook = NULL; |
| 892 | |
| 893 | mutex_enter(&usb_event_lock); |
| 894 | SLIST_INSERT_HEAD(klist, kn, kn_selnext); |
| 895 | mutex_exit(&usb_event_lock); |
| 896 | |
| 897 | return 0; |
| 898 | } |
| 899 | |
| 900 | /* Explore device tree from the root. */ |
| 901 | Static void |
| 902 | usb_discover(struct usb_softc *sc) |
| 903 | { |
| 904 | |
| 905 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 906 | |
| 907 | KASSERT(mutex_owned(sc->sc_bus->ub_lock)); |
| 908 | |
| 909 | if (usb_noexplore > 1) |
| 910 | return; |
| 911 | /* |
| 912 | * We need mutual exclusion while traversing the device tree, |
| 913 | * but this is guaranteed since this function is only called |
| 914 | * from the event thread for the controller. |
| 915 | * |
| 916 | * Also, we now have sc_bus->ub_lock held. |
| 917 | */ |
| 918 | while (sc->sc_bus->ub_needsexplore && !sc->sc_dying) { |
| 919 | sc->sc_bus->ub_needsexplore = 0; |
| 920 | mutex_exit(sc->sc_bus->ub_lock); |
| 921 | sc->sc_bus->ub_roothub->ud_hub->uh_explore(sc->sc_bus->ub_roothub); |
| 922 | mutex_enter(sc->sc_bus->ub_lock); |
| 923 | } |
| 924 | } |
| 925 | |
| 926 | void |
| 927 | usb_needs_explore(struct usbd_device *dev) |
| 928 | { |
| 929 | |
| 930 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 931 | |
| 932 | mutex_enter(dev->ud_bus->ub_lock); |
| 933 | dev->ud_bus->ub_needsexplore = 1; |
| 934 | cv_signal(&dev->ud_bus->ub_needsexplore_cv); |
| 935 | mutex_exit(dev->ud_bus->ub_lock); |
| 936 | } |
| 937 | |
| 938 | void |
| 939 | usb_needs_reattach(struct usbd_device *dev) |
| 940 | { |
| 941 | |
| 942 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 943 | |
| 944 | mutex_enter(dev->ud_bus->ub_lock); |
| 945 | dev->ud_powersrc->up_reattach = 1; |
| 946 | dev->ud_bus->ub_needsexplore = 1; |
| 947 | cv_signal(&dev->ud_bus->ub_needsexplore_cv); |
| 948 | mutex_exit(dev->ud_bus->ub_lock); |
| 949 | } |
| 950 | |
| 951 | /* Called at with usb_event_lock held. */ |
| 952 | int |
| 953 | usb_get_next_event(struct usb_event *ue) |
| 954 | { |
| 955 | struct usb_event_q *ueq; |
| 956 | |
| 957 | KASSERT(mutex_owned(&usb_event_lock)); |
| 958 | |
| 959 | if (usb_nevents <= 0) |
| 960 | return 0; |
| 961 | ueq = SIMPLEQ_FIRST(&usb_events); |
| 962 | #ifdef DIAGNOSTIC |
| 963 | if (ueq == NULL) { |
| 964 | printf("usb: usb_nevents got out of sync! %d\n" , usb_nevents); |
| 965 | usb_nevents = 0; |
| 966 | return 0; |
| 967 | } |
| 968 | #endif |
| 969 | if (ue) |
| 970 | *ue = ueq->ue; |
| 971 | SIMPLEQ_REMOVE_HEAD(&usb_events, next); |
| 972 | usb_free_event((struct usb_event *)(void *)ueq); |
| 973 | usb_nevents--; |
| 974 | return 1; |
| 975 | } |
| 976 | |
| 977 | void |
| 978 | usbd_add_dev_event(int type, struct usbd_device *udev) |
| 979 | { |
| 980 | struct usb_event *ue = usb_alloc_event(); |
| 981 | |
| 982 | usbd_fill_deviceinfo(udev, &ue->u.ue_device, false); |
| 983 | usb_add_event(type, ue); |
| 984 | } |
| 985 | |
| 986 | void |
| 987 | usbd_add_drv_event(int type, struct usbd_device *udev, device_t dev) |
| 988 | { |
| 989 | struct usb_event *ue = usb_alloc_event(); |
| 990 | |
| 991 | ue->u.ue_driver.ue_cookie = udev->ud_cookie; |
| 992 | strncpy(ue->u.ue_driver.ue_devname, device_xname(dev), |
| 993 | sizeof(ue->u.ue_driver.ue_devname)); |
| 994 | usb_add_event(type, ue); |
| 995 | } |
| 996 | |
| 997 | Static struct usb_event * |
| 998 | usb_alloc_event(void) |
| 999 | { |
| 1000 | /* Yes, this is right; we allocate enough so that we can use it later */ |
| 1001 | return kmem_zalloc(sizeof(struct usb_event_q), KM_SLEEP); |
| 1002 | } |
| 1003 | |
| 1004 | Static void |
| 1005 | usb_free_event(struct usb_event *uep) |
| 1006 | { |
| 1007 | kmem_free(uep, sizeof(struct usb_event_q)); |
| 1008 | } |
| 1009 | |
| 1010 | Static void |
| 1011 | usb_add_event(int type, struct usb_event *uep) |
| 1012 | { |
| 1013 | struct usb_event_q *ueq; |
| 1014 | struct timeval thetime; |
| 1015 | |
| 1016 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 1017 | |
| 1018 | microtime(&thetime); |
| 1019 | /* Don't want to wait here with usb_event_lock held */ |
| 1020 | ueq = (struct usb_event_q *)(void *)uep; |
| 1021 | ueq->ue = *uep; |
| 1022 | ueq->ue.ue_type = type; |
| 1023 | TIMEVAL_TO_TIMESPEC(&thetime, &ueq->ue.ue_time); |
| 1024 | |
| 1025 | mutex_enter(&usb_event_lock); |
| 1026 | if (++usb_nevents >= USB_MAX_EVENTS) { |
| 1027 | /* Too many queued events, drop an old one. */ |
| 1028 | DPRINTF("event dropped" , 0, 0, 0, 0); |
| 1029 | (void)usb_get_next_event(0); |
| 1030 | } |
| 1031 | SIMPLEQ_INSERT_TAIL(&usb_events, ueq, next); |
| 1032 | cv_signal(&usb_event_cv); |
| 1033 | selnotify(&usb_selevent, 0, 0); |
| 1034 | if (usb_async_proc != NULL) { |
| 1035 | kpreempt_disable(); |
| 1036 | softint_schedule(usb_async_sih); |
| 1037 | kpreempt_enable(); |
| 1038 | } |
| 1039 | mutex_exit(&usb_event_lock); |
| 1040 | } |
| 1041 | |
| 1042 | Static void |
| 1043 | usb_async_intr(void *cookie) |
| 1044 | { |
| 1045 | proc_t *proc; |
| 1046 | |
| 1047 | mutex_enter(proc_lock); |
| 1048 | if ((proc = usb_async_proc) != NULL) |
| 1049 | psignal(proc, SIGIO); |
| 1050 | mutex_exit(proc_lock); |
| 1051 | } |
| 1052 | |
| 1053 | Static void |
| 1054 | usb_soft_intr(void *arg) |
| 1055 | { |
| 1056 | struct usbd_bus *bus = arg; |
| 1057 | |
| 1058 | mutex_enter(bus->ub_lock); |
| 1059 | bus->ub_methods->ubm_softint(bus); |
| 1060 | mutex_exit(bus->ub_lock); |
| 1061 | } |
| 1062 | |
| 1063 | void |
| 1064 | usb_schedsoftintr(struct usbd_bus *bus) |
| 1065 | { |
| 1066 | |
| 1067 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 1068 | |
| 1069 | DPRINTFN(10, "polling=%d" , bus->ub_usepolling, 0, 0, 0); |
| 1070 | |
| 1071 | if (bus->ub_usepolling) { |
| 1072 | bus->ub_methods->ubm_softint(bus); |
| 1073 | } else { |
| 1074 | kpreempt_disable(); |
| 1075 | softint_schedule(bus->ub_soft); |
| 1076 | kpreempt_enable(); |
| 1077 | } |
| 1078 | } |
| 1079 | |
| 1080 | int |
| 1081 | usb_activate(device_t self, enum devact act) |
| 1082 | { |
| 1083 | struct usb_softc *sc = device_private(self); |
| 1084 | |
| 1085 | switch (act) { |
| 1086 | case DVACT_DEACTIVATE: |
| 1087 | sc->sc_dying = 1; |
| 1088 | return 0; |
| 1089 | default: |
| 1090 | return EOPNOTSUPP; |
| 1091 | } |
| 1092 | } |
| 1093 | |
| 1094 | void |
| 1095 | usb_childdet(device_t self, device_t child) |
| 1096 | { |
| 1097 | int i; |
| 1098 | struct usb_softc *sc = device_private(self); |
| 1099 | struct usbd_device *dev; |
| 1100 | |
| 1101 | if ((dev = sc->sc_port.up_dev) == NULL || dev->ud_subdevlen == 0) |
| 1102 | return; |
| 1103 | |
| 1104 | for (i = 0; i < dev->ud_subdevlen; i++) |
| 1105 | if (dev->ud_subdevs[i] == child) |
| 1106 | dev->ud_subdevs[i] = NULL; |
| 1107 | } |
| 1108 | |
| 1109 | int |
| 1110 | usb_detach(device_t self, int flags) |
| 1111 | { |
| 1112 | struct usb_softc *sc = device_private(self); |
| 1113 | struct usb_event *ue; |
| 1114 | int rc; |
| 1115 | |
| 1116 | USBHIST_FUNC(); USBHIST_CALLED(usbdebug); |
| 1117 | |
| 1118 | /* Make all devices disconnect. */ |
| 1119 | if (sc->sc_port.up_dev != NULL && |
| 1120 | (rc = usb_disconnect_port(&sc->sc_port, self, flags)) != 0) |
| 1121 | return rc; |
| 1122 | |
| 1123 | pmf_device_deregister(self); |
| 1124 | /* Kill off event thread. */ |
| 1125 | sc->sc_dying = 1; |
| 1126 | while (sc->sc_event_thread != NULL) { |
| 1127 | mutex_enter(sc->sc_bus->ub_lock); |
| 1128 | cv_signal(&sc->sc_bus->ub_needsexplore_cv); |
| 1129 | cv_timedwait(&sc->sc_bus->ub_needsexplore_cv, |
| 1130 | sc->sc_bus->ub_lock, hz * 60); |
| 1131 | mutex_exit(sc->sc_bus->ub_lock); |
| 1132 | } |
| 1133 | DPRINTF("event thread dead" , 0, 0, 0, 0); |
| 1134 | |
| 1135 | if (sc->sc_bus->ub_soft != NULL) { |
| 1136 | softint_disestablish(sc->sc_bus->ub_soft); |
| 1137 | sc->sc_bus->ub_soft = NULL; |
| 1138 | } |
| 1139 | |
| 1140 | ue = usb_alloc_event(); |
| 1141 | ue->u.ue_ctrlr.ue_bus = device_unit(self); |
| 1142 | usb_add_event(USB_EVENT_CTRLR_DETACH, ue); |
| 1143 | |
| 1144 | cv_destroy(&sc->sc_bus->ub_needsexplore_cv); |
| 1145 | |
| 1146 | return 0; |
| 1147 | } |
| 1148 | |
| 1149 | #ifdef COMPAT_30 |
| 1150 | Static void |
| 1151 | usb_copy_old_devinfo(struct usb_device_info_old *uo, |
| 1152 | const struct usb_device_info *ue) |
| 1153 | { |
| 1154 | const unsigned char *p; |
| 1155 | unsigned char *q; |
| 1156 | int i, n; |
| 1157 | |
| 1158 | uo->udi_bus = ue->udi_bus; |
| 1159 | uo->udi_addr = ue->udi_addr; |
| 1160 | uo->udi_cookie = ue->udi_cookie; |
| 1161 | for (i = 0, p = (const unsigned char *)ue->udi_product, |
| 1162 | q = (unsigned char *)uo->udi_product; |
| 1163 | *p && i < USB_MAX_STRING_LEN - 1; p++) { |
| 1164 | if (*p < 0x80) |
| 1165 | q[i++] = *p; |
| 1166 | else { |
| 1167 | q[i++] = '?'; |
| 1168 | if ((*p & 0xe0) == 0xe0) |
| 1169 | p++; |
| 1170 | p++; |
| 1171 | } |
| 1172 | } |
| 1173 | q[i] = 0; |
| 1174 | |
| 1175 | for (i = 0, p = ue->udi_vendor, q = uo->udi_vendor; |
| 1176 | *p && i < USB_MAX_STRING_LEN - 1; p++) { |
| 1177 | if (* p < 0x80) |
| 1178 | q[i++] = *p; |
| 1179 | else { |
| 1180 | q[i++] = '?'; |
| 1181 | p++; |
| 1182 | if ((*p & 0xe0) == 0xe0) |
| 1183 | p++; |
| 1184 | } |
| 1185 | } |
| 1186 | q[i] = 0; |
| 1187 | |
| 1188 | memcpy(uo->udi_release, ue->udi_release, sizeof(uo->udi_release)); |
| 1189 | |
| 1190 | uo->udi_productNo = ue->udi_productNo; |
| 1191 | uo->udi_vendorNo = ue->udi_vendorNo; |
| 1192 | uo->udi_releaseNo = ue->udi_releaseNo; |
| 1193 | uo->udi_class = ue->udi_class; |
| 1194 | uo->udi_subclass = ue->udi_subclass; |
| 1195 | uo->udi_protocol = ue->udi_protocol; |
| 1196 | uo->udi_config = ue->udi_config; |
| 1197 | uo->udi_speed = ue->udi_speed; |
| 1198 | uo->udi_power = ue->udi_power; |
| 1199 | uo->udi_nports = ue->udi_nports; |
| 1200 | |
| 1201 | for (n=0; n<USB_MAX_DEVNAMES; n++) |
| 1202 | memcpy(uo->udi_devnames[n], |
| 1203 | ue->udi_devnames[n], USB_MAX_DEVNAMELEN); |
| 1204 | memcpy(uo->udi_ports, ue->udi_ports, sizeof(uo->udi_ports)); |
| 1205 | } |
| 1206 | #endif |
| 1207 | |