1 /* -*- Mode: C; indent-tabs-mode:nil -*- */
3 * darwin backend for libusb 1.0
4 * Copyright © 2008-2020 Nathan Hjelm <hjelmn@cs.unm.edu>
5 * Copyright © 2019-2020 Google LLC. All rights reserved.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
30 #include <sys/types.h>
33 #include <sys/sysctl.h>
35 #include <mach/clock.h>
36 #include <mach/clock_types.h>
37 #include <mach/mach_host.h>
38 #include <mach/mach_port.h>
40 /* Suppress warnings about the use of the deprecated objc_registerThreadWithCollector
41 * function. Its use is also conditionalized to only older deployment targets. */
42 #define OBJC_SILENCE_GC_DEPRECATIONS 1
44 /* Default timeout to 10s for reenumerate. This is needed because USBDeviceReEnumerate
45 * does not return error status on macOS. */
46 #define DARWIN_REENUMERATE_TIMEOUT_US 10000000
48 #include <AvailabilityMacros.h>
49 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 && MAC_OS_X_VERSION_MIN_REQUIRED < 101200
50 #include <objc/objc-auto.h>
53 #include "darwin_usb.h"
55 static int init_count = 0;
57 /* async event thread */
58 static pthread_mutex_t libusb_darwin_at_mutex = PTHREAD_MUTEX_INITIALIZER;
59 static pthread_cond_t libusb_darwin_at_cond = PTHREAD_COND_INITIALIZER;
61 #if !defined(HAVE_CLOCK_GETTIME)
62 static clock_serv_t clock_realtime;
63 static clock_serv_t clock_monotonic;
66 #define LIBUSB_DARWIN_STARTUP_FAILURE ((CFRunLoopRef) -1)
68 static CFRunLoopRef libusb_darwin_acfl = NULL; /* event cf loop */
69 static CFRunLoopSourceRef libusb_darwin_acfls = NULL; /* shutdown signal for event cf loop */
71 static usbi_mutex_t darwin_cached_devices_lock = PTHREAD_MUTEX_INITIALIZER;
72 static struct list_head darwin_cached_devices;
73 static const char *darwin_device_class = "IOUSBDevice";
75 #define DARWIN_CACHED_DEVICE(a) (((struct darwin_device_priv *)usbi_get_device_priv((a)))->dev)
77 /* async event thread */
78 static pthread_t libusb_darwin_at;
80 static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, void *buffer, size_t len);
81 static int darwin_claim_interface(struct libusb_device_handle *dev_handle, uint8_t iface);
82 static int darwin_release_interface(struct libusb_device_handle *dev_handle, uint8_t iface);
83 static int darwin_reenumerate_device(struct libusb_device_handle *dev_handle, bool capture);
84 static int darwin_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint);
85 static int darwin_reset_device(struct libusb_device_handle *dev_handle);
86 static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0);
88 static enum libusb_error darwin_scan_devices(struct libusb_context *ctx);
89 static enum libusb_error process_new_device (struct libusb_context *ctx, struct darwin_cached_device *cached_device,
90 UInt64 old_session_id);
92 static enum libusb_error darwin_get_cached_device(io_service_t service, struct darwin_cached_device **cached_out,
93 UInt64 *old_session_id);
95 #if defined(ENABLE_LOGGING)
96 static const char *darwin_error_str (IOReturn result) {
97 static char string_buffer[50];
99 case kIOReturnSuccess:
101 case kIOReturnNotOpen:
102 return "device not opened for exclusive access";
103 case kIOReturnNoDevice:
104 return "no connection to an IOService";
105 case kIOUSBNoAsyncPortErr:
106 return "no async port has been opened for interface";
107 case kIOReturnExclusiveAccess:
108 return "another process has device opened for exclusive access";
109 case kIOUSBPipeStalled:
110 return "pipe is stalled";
112 return "could not establish a connection to the Darwin kernel";
113 case kIOUSBTransactionTimeout:
114 return "transaction timed out";
115 case kIOReturnBadArgument:
116 return "invalid argument";
117 case kIOReturnAborted:
118 return "transaction aborted";
119 case kIOReturnNotResponding:
120 return "device not responding";
121 case kIOReturnOverrun:
122 return "data overrun";
123 case kIOReturnCannotWire:
124 return "physical memory can not be wired down";
125 case kIOReturnNoResources:
126 return "out of resources";
127 case kIOUSBHighSpeedSplitError:
128 return "high speed split error";
129 case kIOUSBUnknownPipeErr:
130 return "pipe ref not recognized";
132 snprintf(string_buffer, sizeof(string_buffer), "unknown error (0x%x)", result);
133 return string_buffer;
138 static enum libusb_error darwin_to_libusb (IOReturn result) {
140 case kIOReturnUnderrun:
141 case kIOReturnSuccess:
142 return LIBUSB_SUCCESS;
143 case kIOReturnNotOpen:
144 case kIOReturnNoDevice:
145 return LIBUSB_ERROR_NO_DEVICE;
146 case kIOReturnExclusiveAccess:
147 return LIBUSB_ERROR_ACCESS;
148 case kIOUSBPipeStalled:
149 return LIBUSB_ERROR_PIPE;
150 case kIOReturnBadArgument:
151 return LIBUSB_ERROR_INVALID_PARAM;
152 case kIOUSBTransactionTimeout:
153 return LIBUSB_ERROR_TIMEOUT;
154 case kIOReturnNotResponding:
155 case kIOReturnAborted:
157 case kIOUSBNoAsyncPortErr:
158 case kIOUSBUnknownPipeErr:
160 return LIBUSB_ERROR_OTHER;
164 /* this function must be called with the darwin_cached_devices_lock held */
165 static void darwin_deref_cached_device(struct darwin_cached_device *cached_dev) {
166 cached_dev->refcount--;
167 /* free the device and remove it from the cache */
168 if (0 == cached_dev->refcount) {
169 list_del(&cached_dev->list);
171 if (cached_dev->device) {
172 (*(cached_dev->device))->Release(cached_dev->device);
173 cached_dev->device = NULL;
175 IOObjectRelease (cached_dev->service);
180 static void darwin_ref_cached_device(struct darwin_cached_device *cached_dev) {
181 cached_dev->refcount++;
184 static int ep_to_pipeRef(struct libusb_device_handle *dev_handle, uint8_t ep, uint8_t *pipep, uint8_t *ifcp, struct darwin_interface **interface_out) {
185 struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle);
187 /* current interface */
188 struct darwin_interface *cInterface;
192 usbi_dbg ("converting ep address 0x%02x to pipeRef and interface", ep);
194 for (iface = 0 ; iface < USB_MAXINTERFACES ; iface++) {
195 cInterface = &priv->interfaces[iface];
197 if (dev_handle->claimed_interfaces & (1U << iface)) {
198 for (i = 0 ; i < cInterface->num_endpoints ; i++) {
199 if (cInterface->endpoint_addrs[i] == ep) {
206 *interface_out = cInterface;
208 usbi_dbg ("pipe %d on interface %d matches", *pipep, iface);
209 return LIBUSB_SUCCESS;
215 /* No pipe found with the correct endpoint address */
216 usbi_warn (HANDLE_CTX(dev_handle), "no pipeRef found with endpoint address 0x%02x.", ep);
218 return LIBUSB_ERROR_NOT_FOUND;
221 static IOReturn usb_setup_device_iterator (io_iterator_t *deviceIterator, UInt32 location) {
222 CFMutableDictionaryRef matchingDict = IOServiceMatching(darwin_device_class);
225 return kIOReturnError;
228 CFMutableDictionaryRef propertyMatchDict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
229 &kCFTypeDictionaryKeyCallBacks,
230 &kCFTypeDictionaryValueCallBacks);
232 /* there are no unsigned CFNumber types so treat the value as signed. the OS seems to do this
233 internally (CFNumberType of locationID is kCFNumberSInt32Type) */
234 CFTypeRef locationCF = CFNumberCreate (NULL, kCFNumberSInt32Type, &location);
236 if (propertyMatchDict && locationCF) {
237 CFDictionarySetValue (propertyMatchDict, CFSTR(kUSBDevicePropertyLocationID), locationCF);
238 CFDictionarySetValue (matchingDict, CFSTR(kIOPropertyMatchKey), propertyMatchDict);
240 /* else we can still proceed as long as the caller accounts for the possibility of other devices in the iterator */
242 /* release our references as per the Create Rule */
243 if (propertyMatchDict)
244 CFRelease (propertyMatchDict);
246 CFRelease (locationCF);
249 return IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, deviceIterator);
252 /* Returns 1 on success, 0 on failure. */
253 static bool get_ioregistry_value_number (io_service_t service, CFStringRef property, CFNumberType type, void *p) {
254 CFTypeRef cfNumber = IORegistryEntryCreateCFProperty (service, property, kCFAllocatorDefault, 0);
258 if (CFGetTypeID(cfNumber) == CFNumberGetTypeID()) {
259 success = CFNumberGetValue(cfNumber, type, p);
262 CFRelease (cfNumber);
265 return (success != 0);
268 /* Returns 1 on success, 0 on failure. */
269 static bool get_ioregistry_value_data (io_service_t service, CFStringRef property, ssize_t size, void *p) {
270 CFTypeRef cfData = IORegistryEntryCreateCFProperty (service, property, kCFAllocatorDefault, 0);
271 bool success = false;
274 if (CFGetTypeID (cfData) == CFDataGetTypeID ()) {
275 CFIndex length = CFDataGetLength (cfData);
280 CFDataGetBytes (cfData, CFRangeMake(0, size), p);
290 static usb_device_t **darwin_device_from_service (io_service_t service)
292 io_cf_plugin_ref_t *plugInInterface = NULL;
293 usb_device_t **device;
296 const int max_retries = 5;
298 /* The IOCreatePlugInInterfaceForService function might consistently return
299 an "out of resources" error with certain USB devices the first time we run
300 it. The reason is still unclear, but retrying fixes the problem */
301 for (int count = 0; count < max_retries; count++) {
302 kresult = IOCreatePlugInInterfaceForService(service, kIOUSBDeviceUserClientTypeID,
303 kIOCFPlugInInterfaceID, &plugInInterface,
305 if (kIOReturnSuccess == kresult && plugInInterface) {
309 usbi_dbg ("set up plugin for service retry: %s", darwin_error_str (kresult));
311 /* sleep for a little while before trying again */
312 nanosleep(&(struct timespec){.tv_sec = 0, .tv_nsec = 1000}, NULL);
315 if (kIOReturnSuccess != kresult || !plugInInterface) {
316 usbi_dbg ("could not set up plugin for service: %s", darwin_error_str (kresult));
320 (void)(*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(DeviceInterfaceID),
322 /* Use release instead of IODestroyPlugInInterface to avoid stopping IOServices associated with this device */
323 (*plugInInterface)->Release (plugInInterface);
328 static void darwin_devices_attached (void *ptr, io_iterator_t add_devices) {
330 struct darwin_cached_device *cached_device;
331 UInt64 old_session_id;
332 struct libusb_context *ctx;
333 io_service_t service;
336 usbi_mutex_lock(&active_contexts_lock);
338 while ((service = IOIteratorNext(add_devices))) {
339 ret = darwin_get_cached_device (service, &cached_device, &old_session_id);
340 if (ret < 0 || !cached_device->can_enumerate) {
344 /* add this device to each active context's device list */
345 for_each_context(ctx) {
346 process_new_device (ctx, cached_device, old_session_id);
349 if (cached_device->in_reenumerate) {
350 usbi_dbg ("cached device in reset state. reset complete...");
351 cached_device->in_reenumerate = false;
354 IOObjectRelease(service);
357 usbi_mutex_unlock(&active_contexts_lock);
360 static void darwin_devices_detached (void *ptr, io_iterator_t rem_devices) {
362 struct libusb_device *dev = NULL;
363 struct libusb_context *ctx;
364 struct darwin_cached_device *old_device;
367 UInt64 session, locationID;
370 usbi_mutex_lock(&active_contexts_lock);
372 while ((device = IOIteratorNext (rem_devices)) != 0) {
373 bool is_reenumerating = false;
375 /* get the location from the i/o registry */
376 ret = get_ioregistry_value_number (device, CFSTR("sessionID"), kCFNumberSInt64Type, &session);
377 (void) get_ioregistry_value_number (device, CFSTR("locationID"), kCFNumberSInt32Type, &locationID);
378 IOObjectRelease (device);
382 /* we need to match darwin_ref_cached_device call made in darwin_get_cached_device function
383 otherwise no cached device will ever get freed */
384 usbi_mutex_lock(&darwin_cached_devices_lock);
385 list_for_each_entry(old_device, &darwin_cached_devices, list, struct darwin_cached_device) {
386 if (old_device->session == session) {
387 if (old_device->in_reenumerate) {
388 /* device is re-enumerating. do not dereference the device at this time. libusb_reset_device()
389 * will deref if needed. */
390 usbi_dbg ("detected device detached due to re-enumeration. sessionID: 0x%" PRIx64 ", locationID: 0x%" PRIx64,
391 session, locationID);
393 /* the device object is no longer usable so go ahead and release it */
394 if (old_device->device) {
395 (*(old_device->device))->Release(old_device->device);
396 old_device->device = NULL;
399 is_reenumerating = true;
401 darwin_deref_cached_device (old_device);
408 usbi_mutex_unlock(&darwin_cached_devices_lock);
409 if (is_reenumerating) {
413 for_each_context(ctx) {
414 usbi_dbg ("notifying context %p of device disconnect", ctx);
416 dev = usbi_get_device_by_session_id(ctx, (unsigned long) session);
418 /* signal the core that this device has been disconnected. the core will tear down this device
419 when the reference count reaches 0 */
420 usbi_disconnect_device(dev);
421 libusb_unref_device(dev);
426 usbi_mutex_unlock(&active_contexts_lock);
429 static void darwin_hotplug_poll (void)
431 /* not sure if 1 ms will be too long/short but it should work ok */
432 mach_timespec_t timeout = {.tv_sec = 0, .tv_nsec = 1000000ul};
434 /* since a kernel thread may notify the IOIterators used for
435 * hotplug notification we can't just clear the iterators.
436 * instead just wait until all IOService providers are quiet */
437 (void) IOKitWaitQuiet (kIOMasterPortDefault, &timeout);
440 static void darwin_clear_iterator (io_iterator_t iter) {
443 while ((device = IOIteratorNext (iter)) != 0)
444 IOObjectRelease (device);
447 static void darwin_fail_startup(void) {
448 pthread_mutex_lock (&libusb_darwin_at_mutex);
449 libusb_darwin_acfl = LIBUSB_DARWIN_STARTUP_FAILURE;
450 pthread_cond_signal (&libusb_darwin_at_cond);
451 pthread_mutex_unlock (&libusb_darwin_at_mutex);
455 static void *darwin_event_thread_main (void *arg0) {
457 struct libusb_context *ctx = (struct libusb_context *)arg0;
458 CFRunLoopRef runloop;
459 CFRunLoopSourceRef libusb_shutdown_cfsource;
460 CFRunLoopSourceContext libusb_shutdown_cfsourcectx;
462 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060
463 /* Set this thread's name, so it can be seen in the debugger
464 and crash reports. */
465 pthread_setname_np ("org.libusb.device-hotplug");
468 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 && MAC_OS_X_VERSION_MIN_REQUIRED < 101200
469 /* Tell the Objective-C garbage collector about this thread.
470 This is required because, unlike NSThreads, pthreads are
471 not automatically registered. Although we don't use
472 Objective-C, we use CoreFoundation, which does.
473 Garbage collection support was entirely removed in 10.12,
474 so don't bother there. */
475 objc_registerThreadWithCollector();
478 /* hotplug (device arrival/removal) sources */
479 CFRunLoopSourceRef libusb_notification_cfsource;
480 io_notification_port_t libusb_notification_port;
481 io_iterator_t libusb_rem_device_iterator;
482 io_iterator_t libusb_add_device_iterator;
484 usbi_dbg ("creating hotplug event source");
486 runloop = CFRunLoopGetCurrent ();
489 /* add the shutdown cfsource to the run loop */
490 memset(&libusb_shutdown_cfsourcectx, 0, sizeof(libusb_shutdown_cfsourcectx));
491 libusb_shutdown_cfsourcectx.info = runloop;
492 libusb_shutdown_cfsourcectx.perform = (void (*)(void *))CFRunLoopStop;
493 libusb_shutdown_cfsource = CFRunLoopSourceCreate(NULL, 0, &libusb_shutdown_cfsourcectx);
494 CFRunLoopAddSource(runloop, libusb_shutdown_cfsource, kCFRunLoopDefaultMode);
496 /* add the notification port to the run loop */
497 libusb_notification_port = IONotificationPortCreate (kIOMasterPortDefault);
498 libusb_notification_cfsource = IONotificationPortGetRunLoopSource (libusb_notification_port);
499 CFRunLoopAddSource(runloop, libusb_notification_cfsource, kCFRunLoopDefaultMode);
501 /* create notifications for removed devices */
502 kresult = IOServiceAddMatchingNotification (libusb_notification_port, kIOTerminatedNotification,
503 IOServiceMatching(darwin_device_class),
504 darwin_devices_detached,
505 ctx, &libusb_rem_device_iterator);
507 if (kresult != kIOReturnSuccess) {
508 usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult));
509 CFRelease (libusb_shutdown_cfsource);
511 darwin_fail_startup ();
514 /* create notifications for attached devices */
515 kresult = IOServiceAddMatchingNotification(libusb_notification_port, kIOFirstMatchNotification,
516 IOServiceMatching(darwin_device_class),
517 darwin_devices_attached,
518 ctx, &libusb_add_device_iterator);
520 if (kresult != kIOReturnSuccess) {
521 usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult));
522 CFRelease (libusb_shutdown_cfsource);
524 darwin_fail_startup ();
528 darwin_clear_iterator (libusb_rem_device_iterator);
529 darwin_clear_iterator (libusb_add_device_iterator);
531 usbi_dbg ("darwin event thread ready to receive events");
533 /* signal the main thread that the hotplug runloop has been created. */
534 pthread_mutex_lock (&libusb_darwin_at_mutex);
535 libusb_darwin_acfl = runloop;
536 libusb_darwin_acfls = libusb_shutdown_cfsource;
537 pthread_cond_signal (&libusb_darwin_at_cond);
538 pthread_mutex_unlock (&libusb_darwin_at_mutex);
540 /* run the runloop */
543 usbi_dbg ("darwin event thread exiting");
545 /* signal the main thread that the hotplug runloop has finished. */
546 pthread_mutex_lock (&libusb_darwin_at_mutex);
547 libusb_darwin_acfls = NULL;
548 libusb_darwin_acfl = NULL;
549 pthread_cond_signal (&libusb_darwin_at_cond);
550 pthread_mutex_unlock (&libusb_darwin_at_mutex);
552 /* remove the notification cfsource */
553 CFRunLoopRemoveSource(runloop, libusb_notification_cfsource, kCFRunLoopDefaultMode);
555 /* remove the shutdown cfsource */
556 CFRunLoopRemoveSource(runloop, libusb_shutdown_cfsource, kCFRunLoopDefaultMode);
558 /* delete notification port */
559 IONotificationPortDestroy (libusb_notification_port);
561 /* delete iterators */
562 IOObjectRelease (libusb_rem_device_iterator);
563 IOObjectRelease (libusb_add_device_iterator);
565 CFRelease (libusb_shutdown_cfsource);
571 /* cleanup function to destroy cached devices */
572 static void darwin_cleanup_devices(void) {
573 struct darwin_cached_device *dev, *next;
575 list_for_each_entry_safe(dev, next, &darwin_cached_devices, list, struct darwin_cached_device) {
576 darwin_deref_cached_device(dev);
580 static int darwin_init(struct libusb_context *ctx) {
584 first_init = (1 == ++init_count);
588 if (NULL == darwin_cached_devices.next) {
589 list_init (&darwin_cached_devices);
591 assert(list_empty(&darwin_cached_devices));
592 #if !defined(HAVE_CLOCK_GETTIME)
593 /* create the clocks that will be used if clock_gettime() is not available */
594 host_name_port_t host_self;
596 host_self = mach_host_self();
597 host_get_clock_service(host_self, CALENDAR_CLOCK, &clock_realtime);
598 host_get_clock_service(host_self, SYSTEM_CLOCK, &clock_monotonic);
599 mach_port_deallocate(mach_task_self(), host_self);
603 rc = darwin_scan_devices (ctx);
604 if (LIBUSB_SUCCESS != rc)
608 rc = pthread_create (&libusb_darwin_at, NULL, darwin_event_thread_main, ctx);
610 usbi_err (ctx, "could not create event thread, error %d", rc);
611 rc = LIBUSB_ERROR_OTHER;
615 pthread_mutex_lock (&libusb_darwin_at_mutex);
616 while (!libusb_darwin_acfl)
617 pthread_cond_wait (&libusb_darwin_at_cond, &libusb_darwin_at_mutex);
618 if (libusb_darwin_acfl == LIBUSB_DARWIN_STARTUP_FAILURE) {
619 libusb_darwin_acfl = NULL;
620 rc = LIBUSB_ERROR_OTHER;
622 pthread_mutex_unlock (&libusb_darwin_at_mutex);
625 pthread_join (libusb_darwin_at, NULL);
629 if (LIBUSB_SUCCESS != rc) {
631 darwin_cleanup_devices ();
632 #if !defined(HAVE_CLOCK_GETTIME)
633 mach_port_deallocate(mach_task_self(), clock_realtime);
634 mach_port_deallocate(mach_task_self(), clock_monotonic);
643 static void darwin_exit (struct libusb_context *ctx) {
646 if (0 == --init_count) {
647 /* stop the event runloop and wait for the thread to terminate. */
648 pthread_mutex_lock (&libusb_darwin_at_mutex);
649 CFRunLoopSourceSignal (libusb_darwin_acfls);
650 CFRunLoopWakeUp (libusb_darwin_acfl);
651 while (libusb_darwin_acfl)
652 pthread_cond_wait (&libusb_darwin_at_cond, &libusb_darwin_at_mutex);
653 pthread_mutex_unlock (&libusb_darwin_at_mutex);
654 pthread_join (libusb_darwin_at, NULL);
656 darwin_cleanup_devices ();
658 #if !defined(HAVE_CLOCK_GETTIME)
659 mach_port_deallocate(mach_task_self(), clock_realtime);
660 mach_port_deallocate(mach_task_self(), clock_monotonic);
665 static int get_configuration_index (struct libusb_device *dev, UInt8 config_value) {
666 struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev);
668 IOUSBConfigurationDescriptorPtr desc;
671 /* is there a simpler way to determine the index? */
672 kresult = (*(priv->device))->GetNumberOfConfigurations (priv->device, &numConfig);
673 if (kresult != kIOReturnSuccess)
674 return darwin_to_libusb (kresult);
676 for (i = 0 ; i < numConfig ; i++) {
677 (*(priv->device))->GetConfigurationDescriptorPtr (priv->device, i, &desc);
679 if (desc->bConfigurationValue == config_value)
683 /* configuration not found */
684 return LIBUSB_ERROR_NOT_FOUND;
687 static int darwin_get_active_config_descriptor(struct libusb_device *dev, void *buffer, size_t len) {
688 struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev);
691 if (0 == priv->active_config)
692 return LIBUSB_ERROR_NOT_FOUND;
694 config_index = get_configuration_index (dev, priv->active_config);
695 if (config_index < 0)
698 assert(config_index >= 0 && config_index <= UINT8_MAX);
699 return darwin_get_config_descriptor (dev, (UInt8)config_index, buffer, len);
702 static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, void *buffer, size_t len) {
703 struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev);
704 IOUSBConfigurationDescriptorPtr desc;
708 if (!priv || !priv->device)
709 return LIBUSB_ERROR_OTHER;
711 kresult = (*priv->device)->GetConfigurationDescriptorPtr (priv->device, config_index, &desc);
712 if (kresult == kIOReturnSuccess) {
713 /* copy descriptor */
714 if (libusb_le16_to_cpu(desc->wTotalLength) < len)
715 len = libusb_le16_to_cpu(desc->wTotalLength);
717 memmove (buffer, desc, len);
720 ret = darwin_to_libusb (kresult);
721 if (ret != LIBUSB_SUCCESS)
727 /* check whether the os has configured the device */
728 static enum libusb_error darwin_check_configuration (struct libusb_context *ctx, struct darwin_cached_device *dev) {
729 usb_device_t **darwin_device = dev->device;
731 IOUSBConfigurationDescriptorPtr configDesc;
732 IOUSBFindInterfaceRequest request;
734 io_iterator_t interface_iterator;
735 io_service_t firstInterface;
737 if (dev->dev_descriptor.bNumConfigurations < 1) {
738 usbi_err (ctx, "device has no configurations");
739 return LIBUSB_ERROR_OTHER; /* no configurations at this speed so we can't use it */
742 /* checking the configuration of a root hub simulation takes ~1 s in 10.11. the device is
744 if (0x05ac == libusb_le16_to_cpu (dev->dev_descriptor.idVendor) &&
745 0x8005 == libusb_le16_to_cpu (dev->dev_descriptor.idProduct)) {
746 usbi_dbg ("ignoring configuration on root hub simulation");
747 dev->active_config = 0;
748 return LIBUSB_SUCCESS;
751 /* find the first configuration */
752 kresult = (*darwin_device)->GetConfigurationDescriptorPtr (darwin_device, 0, &configDesc);
753 dev->first_config = (kIOReturnSuccess == kresult) ? configDesc->bConfigurationValue : 1;
755 /* check if the device is already configured. there is probably a better way than iterating over the
756 to accomplish this (the trick is we need to avoid a call to GetConfigurations since buggy devices
757 might lock up on the device request) */
759 /* Setup the Interface Request */
760 request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
761 request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
762 request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
763 request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
765 kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
766 if (kresult != kIOReturnSuccess)
767 return darwin_to_libusb (kresult);
770 firstInterface = IOIteratorNext(interface_iterator);
772 /* done with the interface iterator */
773 IOObjectRelease(interface_iterator);
775 if (firstInterface) {
776 IOObjectRelease (firstInterface);
778 /* device is configured */
779 if (dev->dev_descriptor.bNumConfigurations == 1)
780 /* to avoid problems with some devices get the configurations value from the configuration descriptor */
781 dev->active_config = dev->first_config;
783 /* devices with more than one configuration should work with GetConfiguration */
784 (*darwin_device)->GetConfiguration (darwin_device, &dev->active_config);
787 dev->active_config = 0;
789 usbi_dbg ("active config: %u, first config: %u", dev->active_config, dev->first_config);
791 return LIBUSB_SUCCESS;
794 static IOReturn darwin_request_descriptor (usb_device_t **device, UInt8 desc, UInt8 desc_index, void *buffer, size_t buffer_size) {
795 IOUSBDevRequestTO req;
797 assert(buffer_size <= UINT16_MAX);
799 memset (buffer, 0, buffer_size);
801 /* Set up request for descriptor/ */
802 req.bmRequestType = USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice);
803 req.bRequest = kUSBRqGetDescriptor;
804 req.wValue = (UInt16)(desc << 8);
805 req.wIndex = desc_index;
806 req.wLength = (UInt16)buffer_size;
808 req.noDataTimeout = 20;
809 req.completionTimeout = 100;
811 return (*device)->DeviceRequestTO (device, &req);
814 static enum libusb_error darwin_cache_device_descriptor (struct darwin_cached_device *dev) {
815 usb_device_t **device = dev->device;
817 long delay = 30000; // microseconds
818 int unsuspended = 0, try_unsuspend = 1, try_reconfigure = 1;
820 IOReturn ret = 0, ret2;
822 UInt16 idProduct, idVendor;
824 dev->can_enumerate = 0;
826 (*device)->GetDeviceClass (device, &bDeviceClass);
827 (*device)->GetDeviceProduct (device, &idProduct);
828 (*device)->GetDeviceVendor (device, &idVendor);
830 /* According to Apple's documentation the device must be open for DeviceRequest but we may not be able to open some
831 * devices and Apple's USB Prober doesn't bother to open the device before issuing a descriptor request. Still,
832 * to follow the spec as closely as possible, try opening the device */
833 is_open = ((*device)->USBDeviceOpenSeize(device) == kIOReturnSuccess);
836 /**** retrieve device descriptor ****/
837 ret = darwin_request_descriptor (device, kUSBDeviceDesc, 0, &dev->dev_descriptor, sizeof(dev->dev_descriptor));
839 if (kIOReturnOverrun == ret && kUSBDeviceDesc == dev->dev_descriptor.bDescriptorType)
840 /* received an overrun error but we still received a device descriptor */
841 ret = kIOReturnSuccess;
843 if (kIOUSBVendorIDAppleComputer == idVendor) {
844 /* NTH: don't bother retrying or unsuspending Apple devices */
848 if (kIOReturnSuccess == ret && (0 == dev->dev_descriptor.bNumConfigurations ||
849 0 == dev->dev_descriptor.bcdUSB)) {
850 /* work around for incorrectly configured devices */
851 if (try_reconfigure && is_open) {
852 usbi_dbg("descriptor appears to be invalid. resetting configuration before trying again...");
854 /* set the first configuration */
855 (*device)->SetConfiguration(device, 1);
857 /* don't try to reconfigure again */
861 ret = kIOUSBPipeStalled;
864 if (kIOReturnSuccess != ret && is_open && try_unsuspend) {
865 /* device may be suspended. unsuspend it and try again */
866 #if DeviceVersion >= 320
869 /* IOUSBFamily 320+ provides a way to detect device suspension but earlier versions do not */
870 (void)(*device)->GetUSBDeviceInformation (device, &info);
872 /* note that the device was suspended */
873 if (info & (1U << kUSBInformationDeviceIsSuspendedBit) || 0 == info)
878 /* try to unsuspend the device */
879 ret2 = (*device)->USBDeviceSuspend (device, 0);
880 if (kIOReturnSuccess != ret2) {
881 /* prevent log spew from poorly behaving devices. this indicates the
882 os actually had trouble communicating with the device */
883 usbi_dbg("could not retrieve device descriptor. failed to unsuspend: %s",darwin_error_str(ret2));
891 if (kIOReturnSuccess != ret) {
892 usbi_dbg("kernel responded with code: 0x%08x. sleeping for %ld ms before trying again", ret, delay/1000);
893 /* sleep for a little while before trying again */
894 nanosleep(&(struct timespec){delay / 1000000, (delay * 1000) % 1000000000}, NULL);
896 } while (kIOReturnSuccess != ret && retries--);
899 /* resuspend the device */
900 (void)(*device)->USBDeviceSuspend (device, 1);
903 (void) (*device)->USBDeviceClose (device);
905 if (ret != kIOReturnSuccess) {
906 /* a debug message was already printed out for this error */
907 if (LIBUSB_CLASS_HUB == bDeviceClass)
908 usbi_dbg ("could not retrieve device descriptor %.4x:%.4x: %s (%x). skipping device",
909 idVendor, idProduct, darwin_error_str (ret), ret);
911 usbi_warn (NULL, "could not retrieve device descriptor %.4x:%.4x: %s (%x). skipping device",
912 idVendor, idProduct, darwin_error_str (ret), ret);
913 return darwin_to_libusb (ret);
916 /* catch buggy hubs (which appear to be virtual). Apple's own USB prober has problems with these devices. */
917 if (libusb_le16_to_cpu (dev->dev_descriptor.idProduct) != idProduct) {
918 /* not a valid device */
919 usbi_warn (NULL, "idProduct from iokit (%04x) does not match idProduct in descriptor (%04x). skipping device",
920 idProduct, libusb_le16_to_cpu (dev->dev_descriptor.idProduct));
921 return LIBUSB_ERROR_NO_DEVICE;
924 usbi_dbg ("cached device descriptor:");
925 usbi_dbg (" bDescriptorType: 0x%02x", dev->dev_descriptor.bDescriptorType);
926 usbi_dbg (" bcdUSB: 0x%04x", libusb_le16_to_cpu (dev->dev_descriptor.bcdUSB));
927 usbi_dbg (" bDeviceClass: 0x%02x", dev->dev_descriptor.bDeviceClass);
928 usbi_dbg (" bDeviceSubClass: 0x%02x", dev->dev_descriptor.bDeviceSubClass);
929 usbi_dbg (" bDeviceProtocol: 0x%02x", dev->dev_descriptor.bDeviceProtocol);
930 usbi_dbg (" bMaxPacketSize0: 0x%02x", dev->dev_descriptor.bMaxPacketSize0);
931 usbi_dbg (" idVendor: 0x%04x", libusb_le16_to_cpu (dev->dev_descriptor.idVendor));
932 usbi_dbg (" idProduct: 0x%04x", libusb_le16_to_cpu (dev->dev_descriptor.idProduct));
933 usbi_dbg (" bcdDevice: 0x%04x", libusb_le16_to_cpu (dev->dev_descriptor.bcdDevice));
934 usbi_dbg (" iManufacturer: 0x%02x", dev->dev_descriptor.iManufacturer);
935 usbi_dbg (" iProduct: 0x%02x", dev->dev_descriptor.iProduct);
936 usbi_dbg (" iSerialNumber: 0x%02x", dev->dev_descriptor.iSerialNumber);
937 usbi_dbg (" bNumConfigurations: 0x%02x", dev->dev_descriptor.bNumConfigurations);
939 dev->can_enumerate = 1;
941 return LIBUSB_SUCCESS;
944 /* Returns 1 on success, 0 on failure. */
945 static bool get_device_port (io_service_t service, UInt8 *port) {
950 if (get_ioregistry_value_number (service, CFSTR("PortNum"), kCFNumberSInt8Type, port)) {
954 kresult = IORegistryEntryGetParentEntry (service, kIOServicePlane, &parent);
955 if (kIOReturnSuccess == kresult) {
956 ret = get_ioregistry_value_data (parent, CFSTR("port"), 1, port);
957 IOObjectRelease (parent);
963 /* Returns 1 on success, 0 on failure. */
964 static bool get_device_parent_sessionID(io_service_t service, UInt64 *parent_sessionID) {
968 /* Walk up the tree in the IOService plane until we find a parent that has a sessionID */
970 while((kresult = IORegistryEntryGetParentEntry (parent, kIOUSBPlane, &parent)) == kIOReturnSuccess) {
971 if (get_ioregistry_value_number (parent, CFSTR("sessionID"), kCFNumberSInt64Type, parent_sessionID)) {
977 /* We ran out of parents */
981 static enum libusb_error darwin_get_cached_device(io_service_t service, struct darwin_cached_device **cached_out,
982 UInt64 *old_session_id) {
983 struct darwin_cached_device *new_device;
984 UInt64 sessionID = 0, parent_sessionID = 0;
985 UInt32 locationID = 0;
986 enum libusb_error ret = LIBUSB_SUCCESS;
987 usb_device_t **device;
990 /* assuming sessionID != 0 normally (never seen it be 0) */
994 /* get some info from the io registry */
995 (void) get_ioregistry_value_number (service, CFSTR("sessionID"), kCFNumberSInt64Type, &sessionID);
996 (void) get_ioregistry_value_number (service, CFSTR("locationID"), kCFNumberSInt32Type, &locationID);
997 if (!get_device_port (service, &port)) {
998 usbi_dbg("could not get connected port number");
1001 usbi_dbg("finding cached device for sessionID 0x%" PRIx64, sessionID);
1003 if (get_device_parent_sessionID(service, &parent_sessionID)) {
1004 usbi_dbg("parent sessionID: 0x%" PRIx64, parent_sessionID);
1007 usbi_mutex_lock(&darwin_cached_devices_lock);
1009 list_for_each_entry(new_device, &darwin_cached_devices, list, struct darwin_cached_device) {
1010 usbi_dbg("matching sessionID/locationID 0x%" PRIx64 "/0x%x against cached device with sessionID/locationID 0x%" PRIx64 "/0x%x",
1011 sessionID, locationID, new_device->session, new_device->location);
1012 if (new_device->location == locationID && new_device->in_reenumerate) {
1013 usbi_dbg ("found cached device with matching location that is being re-enumerated");
1014 *old_session_id = new_device->session;
1018 if (new_device->session == sessionID) {
1019 usbi_dbg("using cached device for device");
1020 *cached_out = new_device;
1028 usbi_dbg("caching new device with sessionID 0x%" PRIx64, sessionID);
1030 device = darwin_device_from_service (service);
1032 ret = LIBUSB_ERROR_NO_DEVICE;
1036 if (!(*old_session_id)) {
1037 new_device = calloc (1, sizeof (*new_device));
1039 ret = LIBUSB_ERROR_NO_MEM;
1043 /* add this device to the cached device list */
1044 list_add(&new_device->list, &darwin_cached_devices);
1046 (*device)->GetDeviceAddress (device, (USBDeviceAddress *)&new_device->address);
1048 /* keep a reference to this device */
1049 darwin_ref_cached_device(new_device);
1051 (*device)->GetLocationID (device, &new_device->location);
1052 new_device->port = port;
1053 new_device->parent_session = parent_sessionID;
1055 /* release the ref to old device's service */
1056 IOObjectRelease (new_device->service);
1059 /* keep track of devices regardless of if we successfully enumerate them to
1060 prevent them from being enumerated multiple times */
1061 *cached_out = new_device;
1063 new_device->session = sessionID;
1064 new_device->device = device;
1065 new_device->service = service;
1067 /* retain the service */
1068 IOObjectRetain (service);
1070 /* cache the device descriptor */
1071 ret = darwin_cache_device_descriptor(new_device);
1075 if (new_device->can_enumerate) {
1076 snprintf(new_device->sys_path, 20, "%03i-%04x-%04x-%02x-%02x", new_device->address,
1077 libusb_le16_to_cpu (new_device->dev_descriptor.idVendor),
1078 libusb_le16_to_cpu (new_device->dev_descriptor.idProduct),
1079 new_device->dev_descriptor.bDeviceClass, new_device->dev_descriptor.bDeviceSubClass);
1083 usbi_mutex_unlock(&darwin_cached_devices_lock);
1088 static enum libusb_error process_new_device (struct libusb_context *ctx, struct darwin_cached_device *cached_device,
1089 UInt64 old_session_id) {
1090 struct darwin_device_priv *priv;
1091 struct libusb_device *dev = NULL;
1093 enum libusb_error ret = LIBUSB_SUCCESS;
1096 /* check current active configuration (and cache the first configuration value--
1097 which may be used by claim_interface) */
1098 ret = darwin_check_configuration (ctx, cached_device);
1102 if (0 != old_session_id) {
1103 usbi_dbg ("re-using existing device from context %p for with session 0x%" PRIx64 " new session 0x%" PRIx64,
1104 ctx, old_session_id, cached_device->session);
1105 /* save the libusb device before the session id is updated */
1106 dev = usbi_get_device_by_session_id (ctx, (unsigned long) old_session_id);
1110 usbi_dbg ("allocating new device in context %p for with session 0x%" PRIx64,
1111 ctx, cached_device->session);
1113 dev = usbi_alloc_device(ctx, (unsigned long) cached_device->session);
1115 return LIBUSB_ERROR_NO_MEM;
1118 priv = usbi_get_device_priv(dev);
1120 priv->dev = cached_device;
1121 darwin_ref_cached_device (priv->dev);
1122 dev->port_number = cached_device->port;
1123 dev->bus_number = cached_device->location >> 24;
1124 assert(cached_device->address <= UINT8_MAX);
1125 dev->device_address = (uint8_t)cached_device->address;
1127 priv = usbi_get_device_priv(dev);
1130 static_assert(sizeof(dev->device_descriptor) == sizeof(cached_device->dev_descriptor),
1131 "mismatch between libusb and IOKit device descriptor sizes");
1132 memcpy(&dev->device_descriptor, &cached_device->dev_descriptor, LIBUSB_DT_DEVICE_SIZE);
1133 usbi_localize_device_descriptor(&dev->device_descriptor);
1134 dev->session_data = cached_device->session;
1136 if (NULL != dev->parent_dev) {
1137 libusb_unref_device(dev->parent_dev);
1138 dev->parent_dev = NULL;
1141 if (cached_device->parent_session > 0) {
1142 dev->parent_dev = usbi_get_device_by_session_id (ctx, (unsigned long) cached_device->parent_session);
1145 (*(priv->dev->device))->GetDeviceSpeed (priv->dev->device, &devSpeed);
1148 case kUSBDeviceSpeedLow: dev->speed = LIBUSB_SPEED_LOW; break;
1149 case kUSBDeviceSpeedFull: dev->speed = LIBUSB_SPEED_FULL; break;
1150 case kUSBDeviceSpeedHigh: dev->speed = LIBUSB_SPEED_HIGH; break;
1151 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1080
1152 case kUSBDeviceSpeedSuper: dev->speed = LIBUSB_SPEED_SUPER; break;
1154 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 101200
1155 case kUSBDeviceSpeedSuperPlus: dev->speed = LIBUSB_SPEED_SUPER_PLUS; break;
1158 usbi_warn (ctx, "Got unknown device speed %d", devSpeed);
1161 ret = usbi_sanitize_device (dev);
1165 usbi_dbg ("found device with address %d port = %d parent = %p at %p", dev->device_address,
1166 dev->port_number, (void *) dev->parent_dev, priv->dev->sys_path);
1170 if (!cached_device->in_reenumerate && 0 == ret) {
1171 usbi_connect_device (dev);
1173 libusb_unref_device (dev);
1179 static enum libusb_error darwin_scan_devices(struct libusb_context *ctx) {
1180 struct darwin_cached_device *cached_device;
1181 UInt64 old_session_id;
1182 io_iterator_t deviceIterator;
1183 io_service_t service;
1187 kresult = usb_setup_device_iterator (&deviceIterator, 0);
1188 if (kresult != kIOReturnSuccess)
1189 return darwin_to_libusb (kresult);
1191 while ((service = IOIteratorNext (deviceIterator))) {
1192 ret = darwin_get_cached_device (service, &cached_device, &old_session_id);
1193 if (ret < 0 || !cached_device->can_enumerate) {
1197 (void) process_new_device (ctx, cached_device, old_session_id);
1199 IOObjectRelease(service);
1202 IOObjectRelease(deviceIterator);
1204 return LIBUSB_SUCCESS;
1207 static int darwin_open (struct libusb_device_handle *dev_handle) {
1208 struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle);
1209 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1212 if (0 == dpriv->open_count) {
1213 /* try to open the device */
1214 kresult = (*(dpriv->device))->USBDeviceOpenSeize (dpriv->device);
1215 if (kresult != kIOReturnSuccess) {
1216 usbi_warn (HANDLE_CTX (dev_handle), "USBDeviceOpen: %s", darwin_error_str(kresult));
1218 if (kIOReturnExclusiveAccess != kresult) {
1219 return darwin_to_libusb (kresult);
1222 /* it is possible to perform some actions on a device that is not open so do not return an error */
1223 priv->is_open = false;
1225 priv->is_open = true;
1228 /* create async event source */
1229 kresult = (*(dpriv->device))->CreateDeviceAsyncEventSource (dpriv->device, &priv->cfSource);
1230 if (kresult != kIOReturnSuccess) {
1231 usbi_err (HANDLE_CTX (dev_handle), "CreateDeviceAsyncEventSource: %s", darwin_error_str(kresult));
1233 if (priv->is_open) {
1234 (*(dpriv->device))->USBDeviceClose (dpriv->device);
1237 priv->is_open = false;
1239 return darwin_to_libusb (kresult);
1242 CFRetain (libusb_darwin_acfl);
1244 /* add the cfSource to the aync run loop */
1245 CFRunLoopAddSource(libusb_darwin_acfl, priv->cfSource, kCFRunLoopCommonModes);
1248 /* device opened successfully */
1249 dpriv->open_count++;
1251 usbi_dbg ("device open for access");
1256 static void darwin_close (struct libusb_device_handle *dev_handle) {
1257 struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle);
1258 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1262 if (dpriv->open_count == 0) {
1263 /* something is probably very wrong if this is the case */
1264 usbi_err (HANDLE_CTX (dev_handle), "Close called on a device that was not open!");
1268 dpriv->open_count--;
1269 if (NULL == dpriv->device) {
1270 usbi_warn (HANDLE_CTX (dev_handle), "darwin_close device missing IOService");
1274 /* make sure all interfaces are released */
1275 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
1276 if (dev_handle->claimed_interfaces & (1U << i))
1277 libusb_release_interface (dev_handle, i);
1279 if (0 == dpriv->open_count) {
1280 /* delete the device's async event source */
1281 if (priv->cfSource) {
1282 CFRunLoopRemoveSource (libusb_darwin_acfl, priv->cfSource, kCFRunLoopDefaultMode);
1283 CFRelease (priv->cfSource);
1284 priv->cfSource = NULL;
1285 CFRelease (libusb_darwin_acfl);
1288 if (priv->is_open) {
1289 /* close the device */
1290 kresult = (*(dpriv->device))->USBDeviceClose(dpriv->device);
1291 if (kresult != kIOReturnSuccess) {
1292 /* Log the fact that we had a problem closing the file, however failing a
1293 * close isn't really an error, so return success anyway */
1294 usbi_warn (HANDLE_CTX (dev_handle), "USBDeviceClose: %s", darwin_error_str(kresult));
1300 static int darwin_get_configuration(struct libusb_device_handle *dev_handle, uint8_t *config) {
1301 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1303 *config = dpriv->active_config;
1305 return LIBUSB_SUCCESS;
1308 static enum libusb_error darwin_set_configuration(struct libusb_device_handle *dev_handle, int config) {
1309 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1316 /* Setting configuration will invalidate the interface, so we need
1317 to reclaim it. First, dispose of existing interfaces, if any. */
1318 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
1319 if (dev_handle->claimed_interfaces & (1U << i))
1320 darwin_release_interface (dev_handle, i);
1322 kresult = (*(dpriv->device))->SetConfiguration (dpriv->device, (UInt8)config);
1323 if (kresult != kIOReturnSuccess)
1324 return darwin_to_libusb (kresult);
1326 /* Reclaim any interfaces. */
1327 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
1328 if (dev_handle->claimed_interfaces & (1U << i))
1329 darwin_claim_interface (dev_handle, i);
1331 dpriv->active_config = (UInt8)config;
1333 return LIBUSB_SUCCESS;
1336 static IOReturn darwin_get_interface (usb_device_t **darwin_device, uint8_t ifc, io_service_t *usbInterfacep) {
1337 IOUSBFindInterfaceRequest request;
1339 io_iterator_t interface_iterator;
1340 UInt8 bInterfaceNumber;
1343 *usbInterfacep = IO_OBJECT_NULL;
1345 /* Setup the Interface Request */
1346 request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
1347 request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
1348 request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
1349 request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
1351 kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
1352 if (kresult != kIOReturnSuccess)
1355 while ((*usbInterfacep = IOIteratorNext(interface_iterator))) {
1356 /* find the interface number */
1357 ret = get_ioregistry_value_number (*usbInterfacep, CFSTR("bInterfaceNumber"), kCFNumberSInt8Type,
1360 if (ret && bInterfaceNumber == ifc) {
1364 (void) IOObjectRelease (*usbInterfacep);
1367 /* done with the interface iterator */
1368 IOObjectRelease(interface_iterator);
1370 return kIOReturnSuccess;
1373 static enum libusb_error get_endpoints (struct libusb_device_handle *dev_handle, uint8_t iface) {
1374 struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle);
1376 /* current interface */
1377 struct darwin_interface *cInterface = &priv->interfaces[iface];
1381 UInt8 numep, direction, number;
1382 UInt8 dont_care1, dont_care3;
1386 usbi_dbg ("building table of endpoints.");
1388 /* retrieve the total number of endpoints on this interface */
1389 kresult = (*(cInterface->interface))->GetNumEndpoints(cInterface->interface, &numep);
1390 if (kresult != kIOReturnSuccess) {
1391 usbi_err (HANDLE_CTX (dev_handle), "can't get number of endpoints for interface: %s", darwin_error_str(kresult));
1392 return darwin_to_libusb (kresult);
1395 /* iterate through pipe references */
1396 for (UInt8 i = 1 ; i <= numep ; i++) {
1397 kresult = (*(cInterface->interface))->GetPipeProperties(cInterface->interface, i, &direction, &number, &dont_care1,
1398 &dont_care2, &dont_care3);
1400 if (kresult != kIOReturnSuccess) {
1401 /* probably a buggy device. try to get the endpoint address from the descriptors */
1402 struct libusb_config_descriptor *config;
1403 const struct libusb_endpoint_descriptor *endpoint_desc;
1406 kresult = (*(cInterface->interface))->GetAlternateSetting (cInterface->interface, &alt_setting);
1407 if (kresult != kIOReturnSuccess) {
1408 usbi_err (HANDLE_CTX (dev_handle), "can't get alternate setting for interface");
1409 return darwin_to_libusb (kresult);
1412 rc = libusb_get_active_config_descriptor (dev_handle->dev, &config);
1413 if (LIBUSB_SUCCESS != rc) {
1417 endpoint_desc = config->interface[iface].altsetting[alt_setting].endpoint + i - 1;
1419 cInterface->endpoint_addrs[i - 1] = endpoint_desc->bEndpointAddress;
1421 cInterface->endpoint_addrs[i - 1] = (UInt8)(((kUSBIn == direction) << kUSBRqDirnShift) | (number & LIBUSB_ENDPOINT_ADDRESS_MASK));
1424 usbi_dbg ("interface: %i pipe %i: dir: %i number: %i", iface, i, cInterface->endpoint_addrs[i - 1] >> kUSBRqDirnShift,
1425 cInterface->endpoint_addrs[i - 1] & LIBUSB_ENDPOINT_ADDRESS_MASK);
1428 cInterface->num_endpoints = numep;
1430 return LIBUSB_SUCCESS;
1433 static int darwin_claim_interface(struct libusb_device_handle *dev_handle, uint8_t iface) {
1434 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1435 struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle);
1436 io_service_t usbInterface = IO_OBJECT_NULL;
1438 enum libusb_error ret;
1439 IOCFPlugInInterface **plugInInterface = NULL;
1442 /* current interface */
1443 struct darwin_interface *cInterface = &priv->interfaces[iface];
1445 kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
1446 if (kresult != kIOReturnSuccess)
1447 return darwin_to_libusb (kresult);
1449 /* make sure we have an interface */
1450 if (!usbInterface && dpriv->first_config != 0) {
1451 usbi_info (HANDLE_CTX (dev_handle), "no interface found; setting configuration: %d", dpriv->first_config);
1453 /* set the configuration */
1454 ret = darwin_set_configuration (dev_handle, (int) dpriv->first_config);
1455 if (ret != LIBUSB_SUCCESS) {
1456 usbi_err (HANDLE_CTX (dev_handle), "could not set configuration");
1460 kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
1461 if (kresult != kIOReturnSuccess) {
1462 usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult));
1463 return darwin_to_libusb (kresult);
1467 if (!usbInterface) {
1468 usbi_err (HANDLE_CTX (dev_handle), "interface not found");
1469 return LIBUSB_ERROR_NOT_FOUND;
1472 /* get an interface to the device's interface */
1473 kresult = IOCreatePlugInInterfaceForService (usbInterface, kIOUSBInterfaceUserClientTypeID,
1474 kIOCFPlugInInterfaceID, &plugInInterface, &score);
1476 /* ignore release error */
1477 (void)IOObjectRelease (usbInterface);
1479 if (kresult != kIOReturnSuccess) {
1480 usbi_err (HANDLE_CTX (dev_handle), "IOCreatePlugInInterfaceForService: %s", darwin_error_str(kresult));
1481 return darwin_to_libusb (kresult);
1484 if (!plugInInterface) {
1485 usbi_err (HANDLE_CTX (dev_handle), "plugin interface not found");
1486 return LIBUSB_ERROR_NOT_FOUND;
1489 /* Do the actual claim */
1490 kresult = (*plugInInterface)->QueryInterface(plugInInterface,
1491 CFUUIDGetUUIDBytes(InterfaceInterfaceID),
1492 (LPVOID)&cInterface->interface);
1493 /* We no longer need the intermediate plug-in */
1494 /* Use release instead of IODestroyPlugInInterface to avoid stopping IOServices associated with this device */
1495 (*plugInInterface)->Release (plugInInterface);
1496 if (kresult != kIOReturnSuccess || !cInterface->interface) {
1497 usbi_err (HANDLE_CTX (dev_handle), "QueryInterface: %s", darwin_error_str(kresult));
1498 return darwin_to_libusb (kresult);
1501 /* claim the interface */
1502 kresult = (*(cInterface->interface))->USBInterfaceOpen(cInterface->interface);
1503 if (kresult != kIOReturnSuccess) {
1504 usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceOpen: %s", darwin_error_str(kresult));
1505 return darwin_to_libusb (kresult);
1508 /* update list of endpoints */
1509 ret = get_endpoints (dev_handle, iface);
1511 /* this should not happen */
1512 darwin_release_interface (dev_handle, iface);
1513 usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table");
1517 cInterface->cfSource = NULL;
1519 /* create async event source */
1520 kresult = (*(cInterface->interface))->CreateInterfaceAsyncEventSource (cInterface->interface, &cInterface->cfSource);
1521 if (kresult != kIOReturnSuccess) {
1522 usbi_err (HANDLE_CTX (dev_handle), "could not create async event source");
1524 /* can't continue without an async event source */
1525 (void)darwin_release_interface (dev_handle, iface);
1527 return darwin_to_libusb (kresult);
1530 /* add the cfSource to the async thread's run loop */
1531 CFRunLoopAddSource(libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
1533 usbi_dbg ("interface opened");
1535 return LIBUSB_SUCCESS;
1538 static int darwin_release_interface(struct libusb_device_handle *dev_handle, uint8_t iface) {
1539 struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle);
1542 /* current interface */
1543 struct darwin_interface *cInterface = &priv->interfaces[iface];
1545 /* Check to see if an interface is open */
1546 if (!cInterface->interface)
1547 return LIBUSB_SUCCESS;
1549 /* clean up endpoint data */
1550 cInterface->num_endpoints = 0;
1552 /* delete the interface's async event source */
1553 if (cInterface->cfSource) {
1554 CFRunLoopRemoveSource (libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
1555 CFRelease (cInterface->cfSource);
1558 kresult = (*(cInterface->interface))->USBInterfaceClose(cInterface->interface);
1559 if (kresult != kIOReturnSuccess)
1560 usbi_warn (HANDLE_CTX (dev_handle), "USBInterfaceClose: %s", darwin_error_str(kresult));
1562 kresult = (*(cInterface->interface))->Release(cInterface->interface);
1563 if (kresult != kIOReturnSuccess)
1564 usbi_warn (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult));
1566 cInterface->interface = (usb_interface_t **) IO_OBJECT_NULL;
1568 return darwin_to_libusb (kresult);
1571 static int darwin_set_interface_altsetting(struct libusb_device_handle *dev_handle, uint8_t iface, uint8_t altsetting) {
1572 struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle);
1574 enum libusb_error ret;
1576 uint8_t old_alt_setting;
1578 /* current interface */
1579 struct darwin_interface *cInterface = &priv->interfaces[iface];
1581 if (!cInterface->interface)
1582 return LIBUSB_ERROR_NO_DEVICE;
1584 kresult = (*(cInterface->interface))->SetAlternateInterface (cInterface->interface, altsetting);
1585 if (kresult != kIOReturnSuccess)
1586 usbi_warn (HANDLE_CTX (dev_handle), "SetAlternateInterface: %s", darwin_error_str(kresult));
1588 if (kresult != kIOUSBPipeStalled)
1589 return darwin_to_libusb (kresult);
1591 /* If a device only supports a default setting for the specified interface, then a STALL
1592 (kIOUSBPipeStalled) may be returned. Ref: USB 2.0 specs 9.4.10.
1593 Mimick the behaviour in e.g. the Linux kernel: in such case, reset all endpoints
1594 of the interface (as would have been done per 9.1.1.5) and return success. */
1596 /* For some reason we need to reclaim the interface after the pipe error */
1597 ret = darwin_claim_interface (dev_handle, iface);
1600 darwin_release_interface (dev_handle, iface);
1601 usbi_err (HANDLE_CTX (dev_handle), "could not reclaim interface");
1604 /* Return error if a change to another value was attempted */
1605 kresult = (*(cInterface->interface))->GetAlternateSetting (cInterface->interface, &old_alt_setting);
1606 if (kresult == kIOReturnSuccess && altsetting != old_alt_setting)
1607 return LIBUSB_ERROR_PIPE;
1609 for (i = 0 ; i < cInterface->num_endpoints ; i++)
1610 darwin_clear_halt(dev_handle, cInterface->endpoint_addrs[i]);
1612 return LIBUSB_SUCCESS;
1615 static int darwin_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) {
1616 /* current interface */
1617 struct darwin_interface *cInterface;
1621 /* determine the interface/endpoint to use */
1622 if (ep_to_pipeRef (dev_handle, endpoint, &pipeRef, NULL, &cInterface) != 0) {
1623 usbi_err (HANDLE_CTX (dev_handle), "endpoint not found on any open interface");
1625 return LIBUSB_ERROR_NOT_FOUND;
1628 /* newer versions of darwin support clearing additional bits on the device's endpoint */
1629 kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
1630 if (kresult != kIOReturnSuccess)
1631 usbi_warn (HANDLE_CTX (dev_handle), "ClearPipeStall: %s", darwin_error_str (kresult));
1633 return darwin_to_libusb (kresult);
1636 static int darwin_restore_state (struct libusb_device_handle *dev_handle, int8_t active_config,
1637 unsigned long claimed_interfaces) {
1638 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1639 struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle);
1640 int open_count = dpriv->open_count;
1643 /* clear claimed interfaces temporarily */
1644 dev_handle->claimed_interfaces = 0;
1646 /* close and re-open the device */
1647 priv->is_open = false;
1648 dpriv->open_count = 1;
1650 /* clean up open interfaces */
1651 (void) darwin_close (dev_handle);
1653 /* re-open the device */
1654 ret = darwin_open (dev_handle);
1655 dpriv->open_count = open_count;
1656 if (LIBUSB_SUCCESS != ret) {
1657 /* could not restore configuration */
1658 return LIBUSB_ERROR_NOT_FOUND;
1661 if (dpriv->active_config != active_config) {
1662 usbi_dbg ("darwin/restore_state: restoring configuration %d...", active_config);
1664 ret = darwin_set_configuration (dev_handle, active_config);
1665 if (LIBUSB_SUCCESS != ret) {
1666 usbi_dbg ("darwin/restore_state: could not restore configuration");
1667 return LIBUSB_ERROR_NOT_FOUND;
1671 usbi_dbg ("darwin/restore_state: reclaiming interfaces");
1673 if (claimed_interfaces) {
1674 for (uint8_t iface = 0 ; iface < USB_MAXINTERFACES ; ++iface) {
1675 if (!(claimed_interfaces & (1U << iface))) {
1679 usbi_dbg ("darwin/restore_state: re-claiming interface %u", iface);
1681 ret = darwin_claim_interface (dev_handle, iface);
1682 if (LIBUSB_SUCCESS != ret) {
1683 usbi_dbg ("darwin/restore_state: could not claim interface %u", iface);
1684 return LIBUSB_ERROR_NOT_FOUND;
1687 dev_handle->claimed_interfaces |= 1U << iface;
1691 usbi_dbg ("darwin/restore_state: device state restored");
1693 return LIBUSB_SUCCESS;
1696 static int darwin_reenumerate_device (struct libusb_device_handle *dev_handle, bool capture) {
1697 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1698 unsigned long claimed_interfaces = dev_handle->claimed_interfaces;
1699 int8_t active_config = dpriv->active_config;
1701 IOUSBDeviceDescriptor descriptor;
1702 IOUSBConfigurationDescriptorPtr cached_configuration;
1703 IOUSBConfigurationDescriptor *cached_configurations;
1708 if (dpriv->in_reenumerate) {
1709 /* ack, two (or more) threads are trying to reset the device! abort! */
1710 return LIBUSB_ERROR_NOT_FOUND;
1713 dpriv->in_reenumerate = true;
1715 /* store copies of descriptors so they can be compared after the reset */
1716 memcpy (&descriptor, &dpriv->dev_descriptor, sizeof (descriptor));
1717 cached_configurations = alloca (sizeof (*cached_configurations) * descriptor.bNumConfigurations);
1719 for (i = 0 ; i < descriptor.bNumConfigurations ; ++i) {
1720 (*(dpriv->device))->GetConfigurationDescriptorPtr (dpriv->device, i, &cached_configuration);
1721 memcpy (cached_configurations + i, cached_configuration, sizeof (cached_configurations[i]));
1724 /* if we need to release capture */
1725 if (HAS_CAPTURE_DEVICE()) {
1727 options |= kUSBReEnumerateCaptureDeviceMask;
1733 /* from macOS 10.11 ResetDevice no longer does anything so just use USBDeviceReEnumerate */
1734 kresult = (*(dpriv->device))->USBDeviceReEnumerate (dpriv->device, options);
1735 if (kresult != kIOReturnSuccess) {
1736 usbi_err (HANDLE_CTX (dev_handle), "USBDeviceReEnumerate: %s", darwin_error_str (kresult));
1737 dpriv->in_reenumerate = false;
1738 return darwin_to_libusb (kresult);
1741 /* capture mode does not re-enumerate but it does require re-open */
1743 usbi_dbg ("darwin/reenumerate_device: restoring state...");
1744 dpriv->in_reenumerate = false;
1745 return darwin_restore_state (dev_handle, active_config, claimed_interfaces);
1748 usbi_dbg ("darwin/reenumerate_device: waiting for re-enumeration to complete...");
1751 while (dpriv->in_reenumerate) {
1752 struct timespec delay = {.tv_sec = 0, .tv_nsec = 1000};
1753 nanosleep (&delay, NULL);
1754 if (time++ >= DARWIN_REENUMERATE_TIMEOUT_US) {
1755 usbi_err (HANDLE_CTX (dev_handle), "darwin/reenumerate_device: timeout waiting for reenumerate");
1756 dpriv->in_reenumerate = false;
1757 return LIBUSB_ERROR_TIMEOUT;
1761 /* compare descriptors */
1762 usbi_dbg ("darwin/reenumerate_device: checking whether descriptors changed");
1764 if (memcmp (&descriptor, &dpriv->dev_descriptor, sizeof (descriptor))) {
1765 /* device descriptor changed. need to return not found. */
1766 usbi_dbg ("darwin/reenumerate_device: device descriptor changed");
1767 return LIBUSB_ERROR_NOT_FOUND;
1770 for (i = 0 ; i < descriptor.bNumConfigurations ; ++i) {
1771 (void) (*(dpriv->device))->GetConfigurationDescriptorPtr (dpriv->device, i, &cached_configuration);
1772 if (memcmp (cached_configuration, cached_configurations + i, sizeof (cached_configurations[i]))) {
1773 usbi_dbg ("darwin/reenumerate_device: configuration descriptor %d changed", i);
1774 return LIBUSB_ERROR_NOT_FOUND;
1778 usbi_dbg ("darwin/reenumerate_device: device reset complete. restoring state...");
1780 return darwin_restore_state (dev_handle, active_config, claimed_interfaces);
1783 static int darwin_reset_device (struct libusb_device_handle *dev_handle) {
1784 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1787 if (dpriv->capture_count > 0) {
1788 /* we have to use ResetDevice as USBDeviceReEnumerate() loses the authorization for capture */
1789 kresult = (*(dpriv->device))->ResetDevice (dpriv->device);
1790 return darwin_to_libusb (kresult);
1792 return darwin_reenumerate_device (dev_handle, false);
1796 static int darwin_kernel_driver_active(struct libusb_device_handle *dev_handle, uint8_t interface) {
1797 enum libusb_error ret = darwin_claim_interface (dev_handle, interface);
1798 if (ret == LIBUSB_SUCCESS) {
1799 darwin_release_interface (dev_handle, interface);
1801 return (ret == LIBUSB_ERROR_ACCESS);
1804 static void darwin_destroy_device(struct libusb_device *dev) {
1805 struct darwin_device_priv *dpriv = usbi_get_device_priv(dev);
1808 /* need to hold the lock in case this is the last reference to the device */
1809 usbi_mutex_lock(&darwin_cached_devices_lock);
1810 darwin_deref_cached_device (dpriv->dev);
1812 usbi_mutex_unlock(&darwin_cached_devices_lock);
1816 static int submit_bulk_transfer(struct usbi_transfer *itransfer) {
1817 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1820 uint8_t transferType;
1822 uint16_t maxPacketSize;
1824 struct darwin_interface *cInterface;
1825 #if InterfaceVersion >= 550
1826 IOUSBEndpointProperties pipeProperties = {.bVersion = kUSBEndpointPropertiesVersion3};
1828 /* None of the values below are used in libusb for bulk transfers */
1829 uint8_t direction, number, interval;
1832 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
1833 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1835 return LIBUSB_ERROR_NOT_FOUND;
1838 #if InterfaceVersion >= 550
1839 ret = (*(cInterface->interface))->GetPipePropertiesV3 (cInterface->interface, pipeRef, &pipeProperties);
1841 transferType = pipeProperties.bTransferType;
1842 maxPacketSize = pipeProperties.wMaxPacketSize;
1844 ret = (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
1845 &transferType, &maxPacketSize, &interval);
1849 usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out",
1850 darwin_error_str(ret), ret);
1851 return darwin_to_libusb (ret);
1854 if (0 != (transfer->length % maxPacketSize)) {
1855 /* do not need a zero packet */
1856 transfer->flags &= ~LIBUSB_TRANSFER_ADD_ZERO_PACKET;
1859 /* submit the request */
1860 /* timeouts are unavailable on interrupt endpoints */
1861 if (transferType == kUSBInterrupt) {
1862 if (IS_XFERIN(transfer))
1863 ret = (*(cInterface->interface))->ReadPipeAsync(cInterface->interface, pipeRef, transfer->buffer,
1864 (UInt32)transfer->length, darwin_async_io_callback, itransfer);
1866 ret = (*(cInterface->interface))->WritePipeAsync(cInterface->interface, pipeRef, transfer->buffer,
1867 (UInt32)transfer->length, darwin_async_io_callback, itransfer);
1869 itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1871 if (IS_XFERIN(transfer))
1872 ret = (*(cInterface->interface))->ReadPipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
1873 (UInt32)transfer->length, transfer->timeout, transfer->timeout,
1874 darwin_async_io_callback, itransfer);
1876 ret = (*(cInterface->interface))->WritePipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
1877 (UInt32)transfer->length, transfer->timeout, transfer->timeout,
1878 darwin_async_io_callback, itransfer);
1882 usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out",
1883 darwin_error_str(ret), ret);
1885 return darwin_to_libusb (ret);
1888 #if InterfaceVersion >= 550
1889 static int submit_stream_transfer(struct usbi_transfer *itransfer) {
1890 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1891 struct darwin_interface *cInterface;
1895 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
1896 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1898 return LIBUSB_ERROR_NOT_FOUND;
1901 itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1903 if (IS_XFERIN(transfer))
1904 ret = (*(cInterface->interface))->ReadStreamsPipeAsyncTO(cInterface->interface, pipeRef, itransfer->stream_id,
1905 transfer->buffer, (UInt32)transfer->length, transfer->timeout,
1906 transfer->timeout, darwin_async_io_callback, itransfer);
1908 ret = (*(cInterface->interface))->WriteStreamsPipeAsyncTO(cInterface->interface, pipeRef, itransfer->stream_id,
1909 transfer->buffer, (UInt32)transfer->length, transfer->timeout,
1910 transfer->timeout, darwin_async_io_callback, itransfer);
1913 usbi_err (TRANSFER_CTX (transfer), "bulk stream transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out",
1914 darwin_error_str(ret), ret);
1916 return darwin_to_libusb (ret);
1920 static int submit_iso_transfer(struct usbi_transfer *itransfer) {
1921 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1922 struct darwin_transfer_priv *tpriv = usbi_get_transfer_priv(itransfer);
1925 uint8_t direction, number, interval, pipeRef, transferType;
1926 uint16_t maxPacketSize;
1928 AbsoluteTime atTime;
1931 struct darwin_interface *cInterface;
1933 /* construct an array of IOUSBIsocFrames, reuse the old one if the sizes are the same */
1934 if (tpriv->num_iso_packets != transfer->num_iso_packets) {
1935 free(tpriv->isoc_framelist);
1936 tpriv->isoc_framelist = NULL;
1939 if (!tpriv->isoc_framelist) {
1940 tpriv->num_iso_packets = transfer->num_iso_packets;
1941 tpriv->isoc_framelist = (IOUSBIsocFrame*) calloc ((size_t)transfer->num_iso_packets, sizeof(IOUSBIsocFrame));
1942 if (!tpriv->isoc_framelist)
1943 return LIBUSB_ERROR_NO_MEM;
1946 /* copy the frame list from the libusb descriptor (the structures differ only is member order) */
1947 for (i = 0 ; i < transfer->num_iso_packets ; i++) {
1948 unsigned int length = transfer->iso_packet_desc[i].length;
1949 assert(length <= UINT16_MAX);
1950 tpriv->isoc_framelist[i].frReqCount = (UInt16)length;
1953 /* determine the interface/endpoint to use */
1954 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
1955 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1957 return LIBUSB_ERROR_NOT_FOUND;
1960 /* determine the properties of this endpoint and the speed of the device */
1961 (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
1962 &transferType, &maxPacketSize, &interval);
1964 /* Last but not least we need the bus frame number */
1965 kresult = (*(cInterface->interface))->GetBusFrameNumber(cInterface->interface, &frame, &atTime);
1966 if (kresult != kIOReturnSuccess) {
1967 usbi_err (TRANSFER_CTX (transfer), "failed to get bus frame number: %d", kresult);
1968 free(tpriv->isoc_framelist);
1969 tpriv->isoc_framelist = NULL;
1971 return darwin_to_libusb (kresult);
1974 (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
1975 &transferType, &maxPacketSize, &interval);
1977 /* schedule for a frame a little in the future */
1980 if (cInterface->frames[transfer->endpoint] && frame < cInterface->frames[transfer->endpoint])
1981 frame = cInterface->frames[transfer->endpoint];
1983 /* submit the request */
1984 if (IS_XFERIN(transfer))
1985 kresult = (*(cInterface->interface))->ReadIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
1986 (UInt32)transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
1989 kresult = (*(cInterface->interface))->WriteIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
1990 (UInt32)transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
1993 if (LIBUSB_SPEED_FULL == transfer->dev_handle->dev->speed)
1995 cInterface->frames[transfer->endpoint] = frame + (UInt32)transfer->num_iso_packets * (1U << (interval - 1));
1997 /* High/super speed */
1998 cInterface->frames[transfer->endpoint] = frame + (UInt32)transfer->num_iso_packets * (1U << (interval - 1)) / 8;
2000 if (kresult != kIOReturnSuccess) {
2001 usbi_err (TRANSFER_CTX (transfer), "isochronous transfer failed (dir: %s): %s", IS_XFERIN(transfer) ? "In" : "Out",
2002 darwin_error_str(kresult));
2003 free (tpriv->isoc_framelist);
2004 tpriv->isoc_framelist = NULL;
2007 return darwin_to_libusb (kresult);
2010 static int submit_control_transfer(struct usbi_transfer *itransfer) {
2011 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
2012 struct libusb_control_setup *setup = (struct libusb_control_setup *) transfer->buffer;
2013 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev);
2014 struct darwin_transfer_priv *tpriv = usbi_get_transfer_priv(itransfer);
2018 memset(&tpriv->req, 0, sizeof(tpriv->req));
2020 /* IOUSBDeviceInterface expects the request in cpu endianness */
2021 tpriv->req.bmRequestType = setup->bmRequestType;
2022 tpriv->req.bRequest = setup->bRequest;
2023 /* these values should be in bus order from libusb_fill_control_setup */
2024 tpriv->req.wValue = OSSwapLittleToHostInt16 (setup->wValue);
2025 tpriv->req.wIndex = OSSwapLittleToHostInt16 (setup->wIndex);
2026 tpriv->req.wLength = OSSwapLittleToHostInt16 (setup->wLength);
2027 /* data is stored after the libusb control block */
2028 tpriv->req.pData = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE;
2029 tpriv->req.completionTimeout = transfer->timeout;
2030 tpriv->req.noDataTimeout = transfer->timeout;
2032 itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
2034 /* all transfers in libusb-1.0 are async */
2036 if (transfer->endpoint) {
2037 struct darwin_interface *cInterface;
2040 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
2041 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
2043 return LIBUSB_ERROR_NOT_FOUND;
2046 kresult = (*(cInterface->interface))->ControlRequestAsyncTO (cInterface->interface, pipeRef, &(tpriv->req), darwin_async_io_callback, itransfer);
2048 /* control request on endpoint 0 */
2049 kresult = (*(dpriv->device))->DeviceRequestAsyncTO(dpriv->device, &(tpriv->req), darwin_async_io_callback, itransfer);
2051 if (kresult != kIOReturnSuccess)
2052 usbi_err (TRANSFER_CTX (transfer), "control request failed: %s", darwin_error_str(kresult));
2054 return darwin_to_libusb (kresult);
2057 static int darwin_submit_transfer(struct usbi_transfer *itransfer) {
2058 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
2060 switch (transfer->type) {
2061 case LIBUSB_TRANSFER_TYPE_CONTROL:
2062 return submit_control_transfer(itransfer);
2063 case LIBUSB_TRANSFER_TYPE_BULK:
2064 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
2065 return submit_bulk_transfer(itransfer);
2066 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
2067 return submit_iso_transfer(itransfer);
2068 case LIBUSB_TRANSFER_TYPE_BULK_STREAM:
2069 #if InterfaceVersion >= 550
2070 return submit_stream_transfer(itransfer);
2072 usbi_err (TRANSFER_CTX(transfer), "IOUSBFamily version does not support bulk stream transfers");
2073 return LIBUSB_ERROR_NOT_SUPPORTED;
2076 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
2077 return LIBUSB_ERROR_INVALID_PARAM;
2081 static int cancel_control_transfer(struct usbi_transfer *itransfer) {
2082 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
2083 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev);
2086 usbi_warn (ITRANSFER_CTX (itransfer), "aborting all transactions control pipe");
2089 return LIBUSB_ERROR_NO_DEVICE;
2091 kresult = (*(dpriv->device))->USBDeviceAbortPipeZero (dpriv->device);
2093 return darwin_to_libusb (kresult);
2096 static int darwin_abort_transfers (struct usbi_transfer *itransfer) {
2097 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
2098 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev);
2099 struct darwin_interface *cInterface;
2100 uint8_t pipeRef, iface;
2103 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface, &cInterface) != 0) {
2104 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
2106 return LIBUSB_ERROR_NOT_FOUND;
2110 return LIBUSB_ERROR_NO_DEVICE;
2112 usbi_warn (ITRANSFER_CTX (itransfer), "aborting all transactions on interface %d pipe %d", iface, pipeRef);
2114 /* abort transactions */
2115 #if InterfaceVersion >= 550
2116 if (LIBUSB_TRANSFER_TYPE_BULK_STREAM == transfer->type)
2117 (*(cInterface->interface))->AbortStreamsPipe (cInterface->interface, pipeRef, itransfer->stream_id);
2120 (*(cInterface->interface))->AbortPipe (cInterface->interface, pipeRef);
2122 usbi_dbg ("calling clear pipe stall to clear the data toggle bit");
2124 /* newer versions of darwin support clearing additional bits on the device's endpoint */
2125 kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
2127 return darwin_to_libusb (kresult);
2130 static int darwin_cancel_transfer(struct usbi_transfer *itransfer) {
2131 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
2133 switch (transfer->type) {
2134 case LIBUSB_TRANSFER_TYPE_CONTROL:
2135 return cancel_control_transfer(itransfer);
2136 case LIBUSB_TRANSFER_TYPE_BULK:
2137 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
2138 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
2139 return darwin_abort_transfers (itransfer);
2141 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
2142 return LIBUSB_ERROR_INVALID_PARAM;
2146 static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0) {
2147 struct usbi_transfer *itransfer = (struct usbi_transfer *)refcon;
2148 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
2149 struct darwin_transfer_priv *tpriv = usbi_get_transfer_priv(itransfer);
2151 usbi_dbg ("an async io operation has completed");
2153 /* if requested write a zero packet */
2154 if (kIOReturnSuccess == result && IS_XFEROUT(transfer) && transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) {
2155 struct darwin_interface *cInterface;
2158 (void) ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface);
2160 (*(cInterface->interface))->WritePipe (cInterface->interface, pipeRef, transfer->buffer, 0);
2163 tpriv->result = result;
2164 tpriv->size = (UInt32) (uintptr_t) arg0;
2166 /* signal the core that this transfer is complete */
2167 usbi_signal_transfer_completion(itransfer);
2170 static enum libusb_transfer_status darwin_transfer_status (struct usbi_transfer *itransfer, IOReturn result) {
2171 if (itransfer->timeout_flags & USBI_TRANSFER_TIMED_OUT)
2172 result = kIOUSBTransactionTimeout;
2175 case kIOReturnUnderrun:
2176 case kIOReturnSuccess:
2177 return LIBUSB_TRANSFER_COMPLETED;
2178 case kIOReturnAborted:
2179 return LIBUSB_TRANSFER_CANCELLED;
2180 case kIOUSBPipeStalled:
2181 usbi_dbg ("transfer error: pipe is stalled");
2182 return LIBUSB_TRANSFER_STALL;
2183 case kIOReturnOverrun:
2184 usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: data overrun");
2185 return LIBUSB_TRANSFER_OVERFLOW;
2186 case kIOUSBTransactionTimeout:
2187 usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: timed out");
2188 itransfer->timeout_flags |= USBI_TRANSFER_TIMED_OUT;
2189 return LIBUSB_TRANSFER_TIMED_OUT;
2191 usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: %s (value = 0x%08x)", darwin_error_str (result), result);
2192 return LIBUSB_TRANSFER_ERROR;
2196 static int darwin_handle_transfer_completion (struct usbi_transfer *itransfer) {
2197 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
2198 struct darwin_transfer_priv *tpriv = usbi_get_transfer_priv(itransfer);
2199 const unsigned char max_transfer_type = LIBUSB_TRANSFER_TYPE_BULK_STREAM;
2200 const char *transfer_types[] = {"control", "isoc", "bulk", "interrupt", "bulk-stream", NULL};
2201 bool is_isoc = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS == transfer->type;
2203 if (transfer->type > max_transfer_type) {
2204 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
2205 return LIBUSB_ERROR_INVALID_PARAM;
2208 if (NULL == tpriv) {
2209 usbi_err (TRANSFER_CTX(transfer), "malformed request is missing transfer priv");
2210 return LIBUSB_ERROR_INVALID_PARAM;
2213 usbi_dbg ("handling transfer completion type %s with kernel status %d", transfer_types[transfer->type], tpriv->result);
2215 if (kIOReturnSuccess == tpriv->result || kIOReturnUnderrun == tpriv->result || kIOUSBTransactionTimeout == tpriv->result) {
2216 if (is_isoc && tpriv->isoc_framelist) {
2217 /* copy isochronous results back */
2219 for (int i = 0; i < transfer->num_iso_packets ; i++) {
2220 struct libusb_iso_packet_descriptor *lib_desc = &transfer->iso_packet_desc[i];
2221 lib_desc->status = darwin_transfer_status (itransfer, tpriv->isoc_framelist[i].frStatus);
2222 lib_desc->actual_length = tpriv->isoc_framelist[i].frActCount;
2224 } else if (!is_isoc) {
2225 itransfer->transferred += tpriv->size;
2229 /* it is ok to handle cancelled transfers without calling usbi_handle_transfer_cancellation (we catch timeout transfers) */
2230 return usbi_handle_transfer_completion (itransfer, darwin_transfer_status (itransfer, tpriv->result));
2233 #if !defined(HAVE_CLOCK_GETTIME)
2234 void usbi_get_monotonic_time(struct timespec *tp) {
2235 mach_timespec_t sys_time;
2237 /* use system boot time as reference for the monotonic clock */
2238 clock_get_time (clock_monotonic, &sys_time);
2240 tp->tv_sec = sys_time.tv_sec;
2241 tp->tv_nsec = sys_time.tv_nsec;
2244 void usbi_get_real_time(struct timespec *tp) {
2245 mach_timespec_t sys_time;
2247 /* CLOCK_REALTIME represents time since the epoch */
2248 clock_get_time (clock_realtime, &sys_time);
2250 tp->tv_sec = sys_time.tv_sec;
2251 tp->tv_nsec = sys_time.tv_nsec;
2255 #if InterfaceVersion >= 550
2256 static int darwin_alloc_streams (struct libusb_device_handle *dev_handle, uint32_t num_streams, unsigned char *endpoints,
2257 int num_endpoints) {
2258 struct darwin_interface *cInterface;
2259 UInt32 supportsStreams;
2263 /* find the minimum number of supported streams on the endpoint list */
2264 for (i = 0 ; i < num_endpoints ; ++i) {
2265 if (0 != (rc = ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface))) {
2269 (*(cInterface->interface))->SupportsStreams (cInterface->interface, pipeRef, &supportsStreams);
2270 if (num_streams > supportsStreams)
2271 num_streams = supportsStreams;
2274 /* it is an error if any endpoint in endpoints does not support streams */
2275 if (0 == num_streams)
2276 return LIBUSB_ERROR_INVALID_PARAM;
2278 /* create the streams */
2279 for (i = 0 ; i < num_endpoints ; ++i) {
2280 (void) ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface);
2282 rc = (*(cInterface->interface))->CreateStreams (cInterface->interface, pipeRef, num_streams);
2283 if (kIOReturnSuccess != rc)
2284 return darwin_to_libusb(rc);
2287 assert(num_streams <= INT_MAX);
2288 return (int)num_streams;
2291 static int darwin_free_streams (struct libusb_device_handle *dev_handle, unsigned char *endpoints, int num_endpoints) {
2292 struct darwin_interface *cInterface;
2293 UInt32 supportsStreams;
2297 for (int i = 0 ; i < num_endpoints ; ++i) {
2298 if (0 != (rc = ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface)))
2301 (*(cInterface->interface))->SupportsStreams (cInterface->interface, pipeRef, &supportsStreams);
2302 if (0 == supportsStreams)
2303 return LIBUSB_ERROR_INVALID_PARAM;
2305 rc = (*(cInterface->interface))->CreateStreams (cInterface->interface, pipeRef, 0);
2306 if (kIOReturnSuccess != rc)
2307 return darwin_to_libusb(rc);
2310 return LIBUSB_SUCCESS;
2314 #if InterfaceVersion >= 700
2316 /* macOS APIs for getting entitlement values */
2319 #include <Security/Security.h>
2321 typedef struct __SecTask *SecTaskRef;
2322 extern SecTaskRef SecTaskCreateFromSelf(CFAllocatorRef allocator);
2323 extern CFTypeRef SecTaskCopyValueForEntitlement(SecTaskRef task, CFStringRef entitlement, CFErrorRef *error);
2326 static bool darwin_has_capture_entitlements (void) {
2331 task = SecTaskCreateFromSelf (kCFAllocatorDefault);
2335 value = SecTaskCopyValueForEntitlement(task, CFSTR("com.apple.vm.device-access"), NULL);
2337 entitled = value && (CFGetTypeID (value) == CFBooleanGetTypeID ()) && CFBooleanGetValue (value);
2344 static int darwin_reload_device (struct libusb_device_handle *dev_handle) {
2345 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
2346 enum libusb_error err;
2348 usbi_mutex_lock(&darwin_cached_devices_lock);
2349 (*(dpriv->device))->Release(dpriv->device);
2350 dpriv->device = darwin_device_from_service (dpriv->service);
2351 if (!dpriv->device) {
2352 err = LIBUSB_ERROR_NO_DEVICE;
2354 err = LIBUSB_SUCCESS;
2356 usbi_mutex_unlock(&darwin_cached_devices_lock);
2361 /* On macOS, we capture an entire device at once, not individual interfaces. */
2363 static int darwin_detach_kernel_driver (struct libusb_device_handle *dev_handle, uint8_t interface) {
2365 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
2367 enum libusb_error err;
2369 if (HAS_CAPTURE_DEVICE()) {
2371 return LIBUSB_ERROR_NOT_SUPPORTED;
2374 if (dpriv->capture_count == 0) {
2375 usbi_dbg ("attempting to detach kernel driver from device");
2377 if (!darwin_has_capture_entitlements ()) {
2378 usbi_warn (HANDLE_CTX (dev_handle), "no capture entitlements. can not detach the kernel driver for this device");
2379 return LIBUSB_ERROR_NOT_SUPPORTED;
2382 /* request authorization */
2383 kresult = IOServiceAuthorize (dpriv->service, kIOServiceInteractionAllowed);
2384 if (kresult != kIOReturnSuccess) {
2385 usbi_err (HANDLE_CTX (dev_handle), "IOServiceAuthorize: %s", darwin_error_str(kresult));
2386 return darwin_to_libusb (kresult);
2389 /* we need start() to be called again for authorization status to refresh */
2390 err = darwin_reload_device (dev_handle);
2391 if (err != LIBUSB_SUCCESS) {
2395 /* reset device to release existing drivers */
2396 err = darwin_reenumerate_device (dev_handle, true);
2397 if (err != LIBUSB_SUCCESS) {
2401 dpriv->capture_count++;
2402 return LIBUSB_SUCCESS;
2406 static int darwin_attach_kernel_driver (struct libusb_device_handle *dev_handle, uint8_t interface) {
2408 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
2410 if (HAS_CAPTURE_DEVICE()) {
2412 return LIBUSB_ERROR_NOT_SUPPORTED;
2415 dpriv->capture_count--;
2416 if (dpriv->capture_count > 0) {
2417 return LIBUSB_SUCCESS;
2420 usbi_dbg ("reenumerating device for kernel driver attach");
2422 /* reset device to attach kernel drivers */
2423 return darwin_reenumerate_device (dev_handle, false);
2426 static int darwin_capture_claim_interface(struct libusb_device_handle *dev_handle, uint8_t iface) {
2427 enum libusb_error ret;
2428 if (dev_handle->auto_detach_kernel_driver) {
2429 ret = darwin_detach_kernel_driver (dev_handle, iface);
2430 if (ret != LIBUSB_SUCCESS) {
2431 usbi_warn (HANDLE_CTX (dev_handle), "failed to auto-detach the kernel driver for this device, ret=%d", ret);
2435 return darwin_claim_interface (dev_handle, iface);
2438 static int darwin_capture_release_interface(struct libusb_device_handle *dev_handle, uint8_t iface) {
2439 enum libusb_error ret;
2440 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
2442 ret = darwin_release_interface (dev_handle, iface);
2443 if (ret != LIBUSB_SUCCESS) {
2447 if (dev_handle->auto_detach_kernel_driver && dpriv->capture_count > 0) {
2448 ret = darwin_attach_kernel_driver (dev_handle, iface);
2449 if (LIBUSB_SUCCESS != ret) {
2450 usbi_warn (HANDLE_CTX (dev_handle), "on attempt to reattach the kernel driver got ret=%d", ret);
2452 /* ignore the error as the interface was successfully released */
2455 return LIBUSB_SUCCESS;
2460 const struct usbi_os_backend usbi_backend = {
2462 .caps = USBI_CAP_SUPPORTS_DETACH_KERNEL_DRIVER,
2463 .init = darwin_init,
2464 .exit = darwin_exit,
2465 .get_active_config_descriptor = darwin_get_active_config_descriptor,
2466 .get_config_descriptor = darwin_get_config_descriptor,
2467 .hotplug_poll = darwin_hotplug_poll,
2469 .open = darwin_open,
2470 .close = darwin_close,
2471 .get_configuration = darwin_get_configuration,
2472 .set_configuration = darwin_set_configuration,
2474 .set_interface_altsetting = darwin_set_interface_altsetting,
2475 .clear_halt = darwin_clear_halt,
2476 .reset_device = darwin_reset_device,
2478 #if InterfaceVersion >= 550
2479 .alloc_streams = darwin_alloc_streams,
2480 .free_streams = darwin_free_streams,
2483 .kernel_driver_active = darwin_kernel_driver_active,
2485 #if InterfaceVersion >= 700
2486 .detach_kernel_driver = darwin_detach_kernel_driver,
2487 .attach_kernel_driver = darwin_attach_kernel_driver,
2488 .claim_interface = darwin_capture_claim_interface,
2489 .release_interface = darwin_capture_release_interface,
2491 .claim_interface = darwin_claim_interface,
2492 .release_interface = darwin_release_interface,
2495 .destroy_device = darwin_destroy_device,
2497 .submit_transfer = darwin_submit_transfer,
2498 .cancel_transfer = darwin_cancel_transfer,
2500 .handle_transfer_completion = darwin_handle_transfer_completion,
2502 .device_priv_size = sizeof(struct darwin_device_priv),
2503 .device_handle_priv_size = sizeof(struct darwin_device_handle_priv),
2504 .transfer_priv_size = sizeof(struct darwin_transfer_priv),