1 /* -*- Mode: C; indent-tabs-mode:nil -*- */
3 * darwin backend for libusb 1.0
4 * Copyright © 2008-2017 Nathan Hjelm <hjelmn@users.sourceforge.net>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #include <sys/types.h>
32 #include <sys/sysctl.h>
34 #include <mach/clock.h>
35 #include <mach/clock_types.h>
36 #include <mach/mach_host.h>
37 #include <mach/mach_port.h>
39 #include <AvailabilityMacros.h>
40 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 && MAC_OS_X_VERSION_MIN_REQUIRED < 101200
41 #include <objc/objc-auto.h>
44 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 101200
45 /* Apple deprecated the darwin atomics in 10.12 in favor of C11 atomics */
46 #include <stdatomic.h>
47 #define libusb_darwin_atomic_fetch_add(x, y) atomic_fetch_add(x, y)
48 #define OSX_USE_CLOCK_GETTIME 1
50 _Atomic int32_t initCount = ATOMIC_VAR_INIT(0);
52 /* use darwin atomics if the target is older than 10.12 */
53 #include <libkern/OSAtomic.h>
55 /* OSAtomicAdd32Barrier returns the new value */
56 #define libusb_darwin_atomic_fetch_add(x, y) (OSAtomicAdd32Barrier(y, x) - y)
58 static volatile int32_t initCount = 0;
60 #define OSX_USE_CLOCK_GETTIME 0
63 #include "darwin_usb.h"
65 /* async event thread */
66 static pthread_mutex_t libusb_darwin_at_mutex = PTHREAD_MUTEX_INITIALIZER;
67 static pthread_cond_t libusb_darwin_at_cond = PTHREAD_COND_INITIALIZER;
69 static pthread_once_t darwin_init_once = PTHREAD_ONCE_INIT;
71 #if !OSX_USE_CLOCK_GETTIME
72 static clock_serv_t clock_realtime;
73 static clock_serv_t clock_monotonic;
76 static CFRunLoopRef libusb_darwin_acfl = NULL; /* event cf loop */
77 static CFRunLoopSourceRef libusb_darwin_acfls = NULL; /* shutdown signal for event cf loop */
79 static usbi_mutex_t darwin_cached_devices_lock = PTHREAD_MUTEX_INITIALIZER;
80 static struct list_head darwin_cached_devices = {&darwin_cached_devices, &darwin_cached_devices};
81 static char *darwin_device_class = kIOUSBDeviceClassName;
83 #define DARWIN_CACHED_DEVICE(a) ((struct darwin_cached_device *) (((struct darwin_device_priv *)((a)->os_priv))->dev))
85 /* async event thread */
86 static pthread_t libusb_darwin_at;
88 static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian);
89 static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface);
90 static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface);
91 static int darwin_reset_device(struct libusb_device_handle *dev_handle);
92 static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0);
94 static int darwin_scan_devices(struct libusb_context *ctx);
95 static int process_new_device (struct libusb_context *ctx, io_service_t service);
97 #if defined(ENABLE_LOGGING)
98 static const char *darwin_error_str (int result) {
99 static char string_buffer[50];
101 case kIOReturnSuccess:
103 case kIOReturnNotOpen:
104 return "device not opened for exclusive access";
105 case kIOReturnNoDevice:
106 return "no connection to an IOService";
107 case kIOUSBNoAsyncPortErr:
108 return "no async port has been opened for interface";
109 case kIOReturnExclusiveAccess:
110 return "another process has device opened for exclusive access";
111 case kIOUSBPipeStalled:
112 return "pipe is stalled";
114 return "could not establish a connection to the Darwin kernel";
115 case kIOUSBTransactionTimeout:
116 return "transaction timed out";
117 case kIOReturnBadArgument:
118 return "invalid argument";
119 case kIOReturnAborted:
120 return "transaction aborted";
121 case kIOReturnNotResponding:
122 return "device not responding";
123 case kIOReturnOverrun:
124 return "data overrun";
125 case kIOReturnCannotWire:
126 return "physical memory can not be wired down";
127 case kIOReturnNoResources:
128 return "out of resources";
129 case kIOUSBHighSpeedSplitError:
130 return "high speed split error";
132 snprintf(string_buffer, sizeof(string_buffer), "unknown error (0x%x)", result);
133 return string_buffer;
138 static int darwin_to_libusb (int 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:
159 return LIBUSB_ERROR_OTHER;
163 /* this function must be called with the darwin_cached_devices_lock held */
164 static void darwin_deref_cached_device(struct darwin_cached_device *cached_dev) {
165 cached_dev->refcount--;
166 /* free the device and remove it from the cache */
167 if (0 == cached_dev->refcount) {
168 list_del(&cached_dev->list);
170 (*(cached_dev->device))->Release(cached_dev->device);
175 static void darwin_ref_cached_device(struct darwin_cached_device *cached_dev) {
176 cached_dev->refcount++;
179 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) {
180 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
182 /* current interface */
183 struct darwin_interface *cInterface;
187 usbi_dbg ("converting ep address 0x%02x to pipeRef and interface", ep);
189 for (iface = 0 ; iface < USB_MAXINTERFACES ; iface++) {
190 cInterface = &priv->interfaces[iface];
192 if (dev_handle->claimed_interfaces & (1 << iface)) {
193 for (i = 0 ; i < cInterface->num_endpoints ; i++) {
194 if (cInterface->endpoint_addrs[i] == ep) {
201 *interface_out = cInterface;
203 usbi_dbg ("pipe %d on interface %d matches", *pipep, iface);
210 /* No pipe found with the correct endpoint address */
211 usbi_warn (HANDLE_CTX(dev_handle), "no pipeRef found with endpoint address 0x%02x.", ep);
213 return LIBUSB_ERROR_NOT_FOUND;
216 static int usb_setup_device_iterator (io_iterator_t *deviceIterator, UInt32 location) {
217 CFMutableDictionaryRef matchingDict = IOServiceMatching(darwin_device_class);
220 return kIOReturnError;
223 CFMutableDictionaryRef propertyMatchDict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
224 &kCFTypeDictionaryKeyCallBacks,
225 &kCFTypeDictionaryValueCallBacks);
227 if (propertyMatchDict) {
228 /* there are no unsigned CFNumber types so treat the value as signed. the os seems to do this
229 internally (CFNumberType of locationID is 3) */
230 CFTypeRef locationCF = CFNumberCreate (NULL, kCFNumberSInt32Type, &location);
232 CFDictionarySetValue (propertyMatchDict, CFSTR(kUSBDevicePropertyLocationID), locationCF);
233 /* release our reference to the CFNumber (CFDictionarySetValue retains it) */
234 CFRelease (locationCF);
236 CFDictionarySetValue (matchingDict, CFSTR(kIOPropertyMatchKey), propertyMatchDict);
237 /* release out reference to the CFMutableDictionaryRef (CFDictionarySetValue retains it) */
238 CFRelease (propertyMatchDict);
240 /* else we can still proceed as long as the caller accounts for the possibility of other devices in the iterator */
243 return IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, deviceIterator);
246 /* Returns 1 on success, 0 on failure. */
247 static int get_ioregistry_value_number (io_service_t service, CFStringRef property, CFNumberType type, void *p) {
248 CFTypeRef cfNumber = IORegistryEntryCreateCFProperty (service, property, kCFAllocatorDefault, 0);
252 if (CFGetTypeID(cfNumber) == CFNumberGetTypeID()) {
253 ret = CFNumberGetValue(cfNumber, type, p);
256 CFRelease (cfNumber);
262 static int get_ioregistry_value_data (io_service_t service, CFStringRef property, ssize_t size, void *p) {
263 CFTypeRef cfData = IORegistryEntryCreateCFProperty (service, property, kCFAllocatorDefault, 0);
267 if (CFGetTypeID (cfData) == CFDataGetTypeID ()) {
268 CFIndex length = CFDataGetLength (cfData);
273 CFDataGetBytes (cfData, CFRangeMake(0, size), p);
283 static usb_device_t **darwin_device_from_service (io_service_t service)
285 io_cf_plugin_ref_t *plugInInterface = NULL;
286 usb_device_t **device;
287 kern_return_t result;
290 result = IOCreatePlugInInterfaceForService(service, kIOUSBDeviceUserClientTypeID,
291 kIOCFPlugInInterfaceID, &plugInInterface,
294 if (kIOReturnSuccess != result || !plugInInterface) {
295 usbi_dbg ("could not set up plugin for service: %s", darwin_error_str (result));
299 (void)(*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(DeviceInterfaceID),
301 /* Use release instead of IODestroyPlugInInterface to avoid stopping IOServices associated with this device */
302 (*plugInInterface)->Release (plugInInterface);
307 static void darwin_devices_attached (void *ptr, io_iterator_t add_devices) {
308 struct libusb_context *ctx;
309 io_service_t service;
311 usbi_mutex_lock(&active_contexts_lock);
313 while ((service = IOIteratorNext(add_devices))) {
314 /* add this device to each active context's device list */
315 list_for_each_entry(ctx, &active_contexts_list, list, struct libusb_context) {
316 process_new_device (ctx, service);;
319 IOObjectRelease(service);
322 usbi_mutex_unlock(&active_contexts_lock);
325 static void darwin_devices_detached (void *ptr, io_iterator_t rem_devices) {
326 struct libusb_device *dev = NULL;
327 struct libusb_context *ctx;
328 struct darwin_cached_device *old_device;
334 usbi_mutex_lock(&active_contexts_lock);
336 while ((device = IOIteratorNext (rem_devices)) != 0) {
337 /* get the location from the i/o registry */
338 ret = get_ioregistry_value_number (device, CFSTR("sessionID"), kCFNumberSInt64Type, &session);
339 IOObjectRelease (device);
343 /* we need to match darwin_ref_cached_device call made in darwin_get_cached_device function
344 otherwise no cached device will ever get freed */
345 usbi_mutex_lock(&darwin_cached_devices_lock);
346 list_for_each_entry(old_device, &darwin_cached_devices, list, struct darwin_cached_device) {
347 if (old_device->session == session) {
348 darwin_deref_cached_device (old_device);
352 usbi_mutex_unlock(&darwin_cached_devices_lock);
354 list_for_each_entry(ctx, &active_contexts_list, list, struct libusb_context) {
355 usbi_dbg ("notifying context %p of device disconnect", ctx);
357 dev = usbi_get_device_by_session_id(ctx, (unsigned long) session);
359 /* signal the core that this device has been disconnected. the core will tear down this device
360 when the reference count reaches 0 */
361 usbi_disconnect_device(dev);
362 libusb_unref_device(dev);
367 usbi_mutex_unlock(&active_contexts_lock);
370 static void darwin_hotplug_poll (void)
372 /* not sure if 5 seconds will be too long/short but it should work ok */
373 mach_timespec_t timeout = {.tv_sec = 5, .tv_nsec = 0};
375 /* since a kernel thread may nodify the IOInterators used for
376 * hotplug notidication we can't just clear the iterators.
377 * instead just wait until all IOService providers are quiet */
378 (void) IOKitWaitQuiet (kIOMasterPortDefault, &timeout);
381 static void darwin_clear_iterator (io_iterator_t iter) {
384 while ((device = IOIteratorNext (iter)) != 0)
385 IOObjectRelease (device);
388 static void *darwin_event_thread_main (void *arg0) {
390 struct libusb_context *ctx = (struct libusb_context *)arg0;
391 CFRunLoopRef runloop;
393 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060
394 /* Set this thread's name, so it can be seen in the debugger
395 and crash reports. */
396 pthread_setname_np ("org.libusb.device-hotplug");
399 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 && MAC_OS_X_VERSION_MIN_REQUIRED < 101200
400 /* Tell the Objective-C garbage collector about this thread.
401 This is required because, unlike NSThreads, pthreads are
402 not automatically registered. Although we don't use
403 Objective-C, we use CoreFoundation, which does.
404 Garbage collection support was entirely removed in 10.12,
405 so don't bother there. */
406 objc_registerThreadWithCollector();
409 /* hotplug (device arrival/removal) sources */
410 CFRunLoopSourceContext libusb_shutdown_cfsourcectx;
411 CFRunLoopSourceRef libusb_notification_cfsource;
412 io_notification_port_t libusb_notification_port;
413 io_iterator_t libusb_rem_device_iterator;
414 io_iterator_t libusb_add_device_iterator;
416 usbi_dbg ("creating hotplug event source");
418 runloop = CFRunLoopGetCurrent ();
421 /* add the shutdown cfsource to the run loop */
422 memset(&libusb_shutdown_cfsourcectx, 0, sizeof(libusb_shutdown_cfsourcectx));
423 libusb_shutdown_cfsourcectx.info = runloop;
424 libusb_shutdown_cfsourcectx.perform = (void (*)(void *))CFRunLoopStop;
425 libusb_darwin_acfls = CFRunLoopSourceCreate(NULL, 0, &libusb_shutdown_cfsourcectx);
426 CFRunLoopAddSource(runloop, libusb_darwin_acfls, kCFRunLoopDefaultMode);
428 /* add the notification port to the run loop */
429 libusb_notification_port = IONotificationPortCreate (kIOMasterPortDefault);
430 libusb_notification_cfsource = IONotificationPortGetRunLoopSource (libusb_notification_port);
431 CFRunLoopAddSource(runloop, libusb_notification_cfsource, kCFRunLoopDefaultMode);
433 /* create notifications for removed devices */
434 kresult = IOServiceAddMatchingNotification (libusb_notification_port, kIOTerminatedNotification,
435 IOServiceMatching(darwin_device_class),
436 darwin_devices_detached,
437 ctx, &libusb_rem_device_iterator);
439 if (kresult != kIOReturnSuccess) {
440 usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult));
445 /* create notifications for attached devices */
446 kresult = IOServiceAddMatchingNotification(libusb_notification_port, kIOFirstMatchNotification,
447 IOServiceMatching(darwin_device_class),
448 darwin_devices_attached,
449 ctx, &libusb_add_device_iterator);
451 if (kresult != kIOReturnSuccess) {
452 usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult));
458 darwin_clear_iterator (libusb_rem_device_iterator);
459 darwin_clear_iterator (libusb_add_device_iterator);
461 usbi_dbg ("darwin event thread ready to receive events");
463 /* signal the main thread that the hotplug runloop has been created. */
464 pthread_mutex_lock (&libusb_darwin_at_mutex);
465 libusb_darwin_acfl = runloop;
466 pthread_cond_signal (&libusb_darwin_at_cond);
467 pthread_mutex_unlock (&libusb_darwin_at_mutex);
469 /* run the runloop */
472 usbi_dbg ("darwin event thread exiting");
474 /* remove the notification cfsource */
475 CFRunLoopRemoveSource(runloop, libusb_notification_cfsource, kCFRunLoopDefaultMode);
477 /* remove the shutdown cfsource */
478 CFRunLoopRemoveSource(runloop, libusb_darwin_acfls, kCFRunLoopDefaultMode);
480 /* delete notification port */
481 IONotificationPortDestroy (libusb_notification_port);
483 /* delete iterators */
484 IOObjectRelease (libusb_rem_device_iterator);
485 IOObjectRelease (libusb_add_device_iterator);
487 CFRelease (libusb_darwin_acfls);
490 libusb_darwin_acfls = NULL;
491 libusb_darwin_acfl = NULL;
496 /* cleanup function to destroy cached devices */
497 static void __attribute__((destructor)) _darwin_finalize(void) {
498 struct darwin_cached_device *dev, *next;
500 usbi_mutex_lock(&darwin_cached_devices_lock);
501 list_for_each_entry_safe(dev, next, &darwin_cached_devices, list, struct darwin_cached_device) {
502 darwin_deref_cached_device(dev);
504 usbi_mutex_unlock(&darwin_cached_devices_lock);
507 static void darwin_check_version (void) {
508 /* adjust for changes in the USB stack in xnu 15 */
509 int sysctl_args[] = {CTL_KERN, KERN_OSRELEASE};
511 char version_string[256] = {'\0',};
514 sysctl(sysctl_args, 2, version_string, &length, NULL, 0);
517 version = strtol (version_string, NULL, 10);
518 if (0 == errno && version >= 15) {
519 darwin_device_class = "IOUSBHostDevice";
523 static int darwin_init(struct libusb_context *ctx) {
526 rc = pthread_once (&darwin_init_once, darwin_check_version);
528 return LIBUSB_ERROR_OTHER;
531 rc = darwin_scan_devices (ctx);
532 if (LIBUSB_SUCCESS != rc) {
536 if (libusb_darwin_atomic_fetch_add (&initCount, 1) == 0) {
537 #if !OSX_USE_CLOCK_GETTIME
538 /* create the clocks that will be used if clock_gettime() is not available */
539 host_name_port_t host_self;
541 host_self = mach_host_self();
542 host_get_clock_service(host_self, CALENDAR_CLOCK, &clock_realtime);
543 host_get_clock_service(host_self, SYSTEM_CLOCK, &clock_monotonic);
544 mach_port_deallocate(mach_task_self(), host_self);
547 pthread_create (&libusb_darwin_at, NULL, darwin_event_thread_main, ctx);
549 pthread_mutex_lock (&libusb_darwin_at_mutex);
550 while (!libusb_darwin_acfl)
551 pthread_cond_wait (&libusb_darwin_at_cond, &libusb_darwin_at_mutex);
552 pthread_mutex_unlock (&libusb_darwin_at_mutex);
558 static void darwin_exit (void) {
559 if (libusb_darwin_atomic_fetch_add (&initCount, -1) == 1) {
560 #if !OSX_USE_CLOCK_GETTIME
561 mach_port_deallocate(mach_task_self(), clock_realtime);
562 mach_port_deallocate(mach_task_self(), clock_monotonic);
565 /* stop the event runloop and wait for the thread to terminate. */
566 CFRunLoopSourceSignal(libusb_darwin_acfls);
567 CFRunLoopWakeUp (libusb_darwin_acfl);
568 pthread_join (libusb_darwin_at, NULL);
572 static int darwin_get_device_descriptor(struct libusb_device *dev, unsigned char *buffer, int *host_endian) {
573 struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev);
575 /* return cached copy */
576 memmove (buffer, &(priv->dev_descriptor), DEVICE_DESC_LENGTH);
583 static int get_configuration_index (struct libusb_device *dev, int config_value) {
584 struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev);
586 IOUSBConfigurationDescriptorPtr desc;
589 /* is there a simpler way to determine the index? */
590 kresult = (*(priv->device))->GetNumberOfConfigurations (priv->device, &numConfig);
591 if (kresult != kIOReturnSuccess)
592 return darwin_to_libusb (kresult);
594 for (i = 0 ; i < numConfig ; i++) {
595 (*(priv->device))->GetConfigurationDescriptorPtr (priv->device, i, &desc);
597 if (desc->bConfigurationValue == config_value)
601 /* configuration not found */
602 return LIBUSB_ERROR_NOT_FOUND;
605 static int darwin_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian) {
606 struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev);
609 if (0 == priv->active_config)
610 return LIBUSB_ERROR_NOT_FOUND;
612 config_index = get_configuration_index (dev, priv->active_config);
613 if (config_index < 0)
616 return darwin_get_config_descriptor (dev, config_index, buffer, len, host_endian);
619 static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) {
620 struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev);
621 IOUSBConfigurationDescriptorPtr desc;
625 if (!priv || !priv->device)
626 return LIBUSB_ERROR_OTHER;
628 kresult = (*priv->device)->GetConfigurationDescriptorPtr (priv->device, config_index, &desc);
629 if (kresult == kIOReturnSuccess) {
630 /* copy descriptor */
631 if (libusb_le16_to_cpu(desc->wTotalLength) < len)
632 len = libusb_le16_to_cpu(desc->wTotalLength);
634 memmove (buffer, desc, len);
636 /* GetConfigurationDescriptorPtr returns the descriptor in USB bus order */
640 ret = darwin_to_libusb (kresult);
641 if (ret != LIBUSB_SUCCESS)
647 /* check whether the os has configured the device */
648 static int darwin_check_configuration (struct libusb_context *ctx, struct darwin_cached_device *dev) {
649 usb_device_t **darwin_device = dev->device;
651 IOUSBConfigurationDescriptorPtr configDesc;
652 IOUSBFindInterfaceRequest request;
653 kern_return_t kresult;
654 io_iterator_t interface_iterator;
655 io_service_t firstInterface;
657 if (dev->dev_descriptor.bNumConfigurations < 1) {
658 usbi_err (ctx, "device has no configurations");
659 return LIBUSB_ERROR_OTHER; /* no configurations at this speed so we can't use it */
662 /* checking the configuration of a root hub simulation takes ~1 s in 10.11. the device is
664 if (0x05ac == dev->dev_descriptor.idVendor && 0x8005 == dev->dev_descriptor.idProduct) {
665 usbi_dbg ("ignoring configuration on root hub simulation");
666 dev->active_config = 0;
670 /* find the first configuration */
671 kresult = (*darwin_device)->GetConfigurationDescriptorPtr (darwin_device, 0, &configDesc);
672 dev->first_config = (kIOReturnSuccess == kresult) ? configDesc->bConfigurationValue : 1;
674 /* check if the device is already configured. there is probably a better way than iterating over the
675 to accomplish this (the trick is we need to avoid a call to GetConfigurations since buggy devices
676 might lock up on the device request) */
678 /* Setup the Interface Request */
679 request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
680 request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
681 request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
682 request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
684 kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
686 return darwin_to_libusb (kresult);
689 firstInterface = IOIteratorNext(interface_iterator);
691 /* done with the interface iterator */
692 IOObjectRelease(interface_iterator);
694 if (firstInterface) {
695 IOObjectRelease (firstInterface);
697 /* device is configured */
698 if (dev->dev_descriptor.bNumConfigurations == 1)
699 /* to avoid problems with some devices get the configurations value from the configuration descriptor */
700 dev->active_config = dev->first_config;
702 /* devices with more than one configuration should work with GetConfiguration */
703 (*darwin_device)->GetConfiguration (darwin_device, &dev->active_config);
706 dev->active_config = 0;
708 usbi_dbg ("active config: %u, first config: %u", dev->active_config, dev->first_config);
713 static int darwin_request_descriptor (usb_device_t **device, UInt8 desc, UInt8 desc_index, void *buffer, size_t buffer_size) {
714 IOUSBDevRequestTO req;
716 memset (buffer, 0, buffer_size);
718 /* Set up request for descriptor/ */
719 req.bmRequestType = USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice);
720 req.bRequest = kUSBRqGetDescriptor;
721 req.wValue = desc << 8;
722 req.wIndex = desc_index;
723 req.wLength = buffer_size;
725 req.noDataTimeout = 20;
726 req.completionTimeout = 100;
728 return (*device)->DeviceRequestTO (device, &req);
731 static int darwin_cache_device_descriptor (struct libusb_context *ctx, struct darwin_cached_device *dev) {
732 usb_device_t **device = dev->device;
733 int retries = 1, delay = 30000;
734 int unsuspended = 0, try_unsuspend = 1, try_reconfigure = 1;
738 UInt16 idProduct, idVendor;
740 dev->can_enumerate = 0;
742 (*device)->GetDeviceClass (device, &bDeviceClass);
743 (*device)->GetDeviceProduct (device, &idProduct);
744 (*device)->GetDeviceVendor (device, &idVendor);
746 /* According to Apple's documentation the device must be open for DeviceRequest but we may not be able to open some
747 * devices and Apple's USB Prober doesn't bother to open the device before issuing a descriptor request. Still,
748 * to follow the spec as closely as possible, try opening the device */
749 is_open = ((*device)->USBDeviceOpenSeize(device) == kIOReturnSuccess);
752 /**** retrieve device descriptor ****/
753 ret = darwin_request_descriptor (device, kUSBDeviceDesc, 0, &dev->dev_descriptor, sizeof(dev->dev_descriptor));
755 if (kIOReturnOverrun == ret && kUSBDeviceDesc == dev->dev_descriptor.bDescriptorType)
756 /* received an overrun error but we still received a device descriptor */
757 ret = kIOReturnSuccess;
759 if (kIOUSBVendorIDAppleComputer == idVendor) {
760 /* NTH: don't bother retrying or unsuspending Apple devices */
764 if (kIOReturnSuccess == ret && (0 == dev->dev_descriptor.bNumConfigurations ||
765 0 == dev->dev_descriptor.bcdUSB)) {
766 /* work around for incorrectly configured devices */
767 if (try_reconfigure && is_open) {
768 usbi_dbg("descriptor appears to be invalid. resetting configuration before trying again...");
770 /* set the first configuration */
771 (*device)->SetConfiguration(device, 1);
773 /* don't try to reconfigure again */
777 ret = kIOUSBPipeStalled;
780 if (kIOReturnSuccess != ret && is_open && try_unsuspend) {
781 /* device may be suspended. unsuspend it and try again */
782 #if DeviceVersion >= 320
785 /* IOUSBFamily 320+ provides a way to detect device suspension but earlier versions do not */
786 (void)(*device)->GetUSBDeviceInformation (device, &info);
788 /* note that the device was suspended */
789 if (info & (1 << kUSBInformationDeviceIsSuspendedBit) || 0 == info)
794 /* try to unsuspend the device */
795 ret2 = (*device)->USBDeviceSuspend (device, 0);
796 if (kIOReturnSuccess != ret2) {
797 /* prevent log spew from poorly behaving devices. this indicates the
798 os actually had trouble communicating with the device */
799 usbi_dbg("could not retrieve device descriptor. failed to unsuspend: %s",darwin_error_str(ret2));
807 if (kIOReturnSuccess != ret) {
808 usbi_dbg("kernel responded with code: 0x%08x. sleeping for %d ms before trying again", ret, delay/1000);
809 /* sleep for a little while before trying again */
810 nanosleep(&(struct timespec){delay / 1000000, (delay * 1000) % 1000000000UL}, NULL);
812 } while (kIOReturnSuccess != ret && retries--);
815 /* resuspend the device */
816 (void)(*device)->USBDeviceSuspend (device, 1);
819 (void) (*device)->USBDeviceClose (device);
821 if (ret != kIOReturnSuccess) {
822 /* a debug message was already printed out for this error */
823 if (LIBUSB_CLASS_HUB == bDeviceClass)
824 usbi_dbg ("could not retrieve device descriptor %.4x:%.4x: %s (%x). skipping device",
825 idVendor, idProduct, darwin_error_str (ret), ret);
827 usbi_warn (ctx, "could not retrieve device descriptor %.4x:%.4x: %s (%x). skipping device",
828 idVendor, idProduct, darwin_error_str (ret), ret);
829 return darwin_to_libusb (ret);
832 /* catch buggy hubs (which appear to be virtual). Apple's own USB prober has problems with these devices. */
833 if (libusb_le16_to_cpu (dev->dev_descriptor.idProduct) != idProduct) {
834 /* not a valid device */
835 usbi_warn (ctx, "idProduct from iokit (%04x) does not match idProduct in descriptor (%04x). skipping device",
836 idProduct, libusb_le16_to_cpu (dev->dev_descriptor.idProduct));
837 return LIBUSB_ERROR_NO_DEVICE;
840 usbi_dbg ("cached device descriptor:");
841 usbi_dbg (" bDescriptorType: 0x%02x", dev->dev_descriptor.bDescriptorType);
842 usbi_dbg (" bcdUSB: 0x%04x", dev->dev_descriptor.bcdUSB);
843 usbi_dbg (" bDeviceClass: 0x%02x", dev->dev_descriptor.bDeviceClass);
844 usbi_dbg (" bDeviceSubClass: 0x%02x", dev->dev_descriptor.bDeviceSubClass);
845 usbi_dbg (" bDeviceProtocol: 0x%02x", dev->dev_descriptor.bDeviceProtocol);
846 usbi_dbg (" bMaxPacketSize0: 0x%02x", dev->dev_descriptor.bMaxPacketSize0);
847 usbi_dbg (" idVendor: 0x%04x", dev->dev_descriptor.idVendor);
848 usbi_dbg (" idProduct: 0x%04x", dev->dev_descriptor.idProduct);
849 usbi_dbg (" bcdDevice: 0x%04x", dev->dev_descriptor.bcdDevice);
850 usbi_dbg (" iManufacturer: 0x%02x", dev->dev_descriptor.iManufacturer);
851 usbi_dbg (" iProduct: 0x%02x", dev->dev_descriptor.iProduct);
852 usbi_dbg (" iSerialNumber: 0x%02x", dev->dev_descriptor.iSerialNumber);
853 usbi_dbg (" bNumConfigurations: 0x%02x", dev->dev_descriptor.bNumConfigurations);
855 dev->can_enumerate = 1;
857 return LIBUSB_SUCCESS;
860 static int get_device_port (io_service_t service, UInt8 *port) {
861 kern_return_t result;
865 if (get_ioregistry_value_number (service, CFSTR("PortNum"), kCFNumberSInt8Type, port)) {
869 result = IORegistryEntryGetParentEntry (service, kIOServicePlane, &parent);
870 if (kIOReturnSuccess == result) {
871 ret = get_ioregistry_value_data (parent, CFSTR("port"), 1, port);
872 IOObjectRelease (parent);
878 static int darwin_get_cached_device(struct libusb_context *ctx, io_service_t service,
879 struct darwin_cached_device **cached_out) {
880 struct darwin_cached_device *new_device;
881 UInt64 sessionID = 0, parent_sessionID = 0;
882 int ret = LIBUSB_SUCCESS;
883 usb_device_t **device;
885 kern_return_t result;
888 /* get some info from the io registry */
889 (void) get_ioregistry_value_number (service, CFSTR("sessionID"), kCFNumberSInt64Type, &sessionID);
890 if (!get_device_port (service, &port)) {
891 usbi_dbg("could not get connected port number");
894 usbi_dbg("finding cached device for sessionID 0x%" PRIx64, sessionID);
896 result = IORegistryEntryGetParentEntry (service, kIOUSBPlane, &parent);
898 if (kIOReturnSuccess == result) {
899 (void) get_ioregistry_value_number (parent, CFSTR("sessionID"), kCFNumberSInt64Type, &parent_sessionID);
900 IOObjectRelease(parent);
903 usbi_mutex_lock(&darwin_cached_devices_lock);
907 list_for_each_entry(new_device, &darwin_cached_devices, list, struct darwin_cached_device) {
908 usbi_dbg("matching sessionID 0x%" PRIx64 " against cached device with sessionID 0x%" PRIx64, sessionID, new_device->session);
909 if (new_device->session == sessionID) {
910 usbi_dbg("using cached device for device");
911 *cached_out = new_device;
919 usbi_dbg("caching new device with sessionID 0x%" PRIx64, sessionID);
921 device = darwin_device_from_service (service);
923 ret = LIBUSB_ERROR_NO_DEVICE;
927 new_device = calloc (1, sizeof (*new_device));
929 ret = LIBUSB_ERROR_NO_MEM;
933 /* add this device to the cached device list */
934 list_add(&new_device->list, &darwin_cached_devices);
936 (*device)->GetDeviceAddress (device, (USBDeviceAddress *)&new_device->address);
938 /* keep a reference to this device */
939 darwin_ref_cached_device(new_device);
941 new_device->device = device;
942 new_device->session = sessionID;
943 (*device)->GetLocationID (device, &new_device->location);
944 new_device->port = port;
945 new_device->parent_session = parent_sessionID;
947 /* cache the device descriptor */
948 ret = darwin_cache_device_descriptor(ctx, new_device);
952 if (new_device->can_enumerate) {
953 snprintf(new_device->sys_path, 20, "%03i-%04x-%04x-%02x-%02x", new_device->address,
954 new_device->dev_descriptor.idVendor, new_device->dev_descriptor.idProduct,
955 new_device->dev_descriptor.bDeviceClass, new_device->dev_descriptor.bDeviceSubClass);
959 usbi_mutex_unlock(&darwin_cached_devices_lock);
961 /* keep track of devices regardless of if we successfully enumerate them to
962 prevent them from being enumerated multiple times */
964 *cached_out = new_device;
969 static int process_new_device (struct libusb_context *ctx, io_service_t service) {
970 struct darwin_device_priv *priv;
971 struct libusb_device *dev = NULL;
972 struct darwin_cached_device *cached_device;
977 ret = darwin_get_cached_device (ctx, service, &cached_device);
979 if (ret < 0 || !cached_device->can_enumerate) {
983 /* check current active configuration (and cache the first configuration value--
984 which may be used by claim_interface) */
985 ret = darwin_check_configuration (ctx, cached_device);
989 usbi_dbg ("allocating new device in context %p for with session 0x%" PRIx64,
990 ctx, cached_device->session);
992 dev = usbi_alloc_device(ctx, (unsigned long) cached_device->session);
994 return LIBUSB_ERROR_NO_MEM;
997 priv = (struct darwin_device_priv *)dev->os_priv;
999 priv->dev = cached_device;
1000 darwin_ref_cached_device (priv->dev);
1002 if (cached_device->parent_session > 0) {
1003 dev->parent_dev = usbi_get_device_by_session_id (ctx, (unsigned long) cached_device->parent_session);
1005 dev->parent_dev = NULL;
1007 dev->port_number = cached_device->port;
1008 dev->bus_number = cached_device->location >> 24;
1009 dev->device_address = cached_device->address;
1011 (*(priv->dev->device))->GetDeviceSpeed (priv->dev->device, &devSpeed);
1014 case kUSBDeviceSpeedLow: dev->speed = LIBUSB_SPEED_LOW; break;
1015 case kUSBDeviceSpeedFull: dev->speed = LIBUSB_SPEED_FULL; break;
1016 case kUSBDeviceSpeedHigh: dev->speed = LIBUSB_SPEED_HIGH; break;
1017 #if DeviceVersion >= 500
1018 case kUSBDeviceSpeedSuper: dev->speed = LIBUSB_SPEED_SUPER; break;
1021 usbi_warn (ctx, "Got unknown device speed %d", devSpeed);
1024 ret = usbi_sanitize_device (dev);
1028 usbi_dbg ("found device with address %d port = %d parent = %p at %p", dev->device_address,
1029 dev->port_number, (void *) dev->parent_dev, priv->dev->sys_path);
1033 usbi_connect_device (dev);
1035 libusb_unref_device (dev);
1041 static int darwin_scan_devices(struct libusb_context *ctx) {
1042 io_iterator_t deviceIterator;
1043 io_service_t service;
1044 kern_return_t kresult;
1046 kresult = usb_setup_device_iterator (&deviceIterator, 0);
1047 if (kresult != kIOReturnSuccess)
1048 return darwin_to_libusb (kresult);
1050 while ((service = IOIteratorNext (deviceIterator))) {
1051 (void) process_new_device (ctx, service);
1053 IOObjectRelease(service);
1056 IOObjectRelease(deviceIterator);
1061 static int darwin_open (struct libusb_device_handle *dev_handle) {
1062 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1063 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1066 if (0 == dpriv->open_count) {
1067 /* try to open the device */
1068 kresult = (*(dpriv->device))->USBDeviceOpenSeize (dpriv->device);
1069 if (kresult != kIOReturnSuccess) {
1070 usbi_warn (HANDLE_CTX (dev_handle), "USBDeviceOpen: %s", darwin_error_str(kresult));
1072 if (kIOReturnExclusiveAccess != kresult) {
1073 return darwin_to_libusb (kresult);
1076 /* it is possible to perform some actions on a device that is not open so do not return an error */
1082 /* create async event source */
1083 kresult = (*(dpriv->device))->CreateDeviceAsyncEventSource (dpriv->device, &priv->cfSource);
1084 if (kresult != kIOReturnSuccess) {
1085 usbi_err (HANDLE_CTX (dev_handle), "CreateDeviceAsyncEventSource: %s", darwin_error_str(kresult));
1087 if (priv->is_open) {
1088 (*(dpriv->device))->USBDeviceClose (dpriv->device);
1093 return darwin_to_libusb (kresult);
1096 CFRetain (libusb_darwin_acfl);
1098 /* add the cfSource to the aync run loop */
1099 CFRunLoopAddSource(libusb_darwin_acfl, priv->cfSource, kCFRunLoopCommonModes);
1102 /* device opened successfully */
1103 dpriv->open_count++;
1105 usbi_dbg ("device open for access");
1110 static void darwin_close (struct libusb_device_handle *dev_handle) {
1111 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1112 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1116 if (dpriv->open_count == 0) {
1117 /* something is probably very wrong if this is the case */
1118 usbi_err (HANDLE_CTX (dev_handle), "Close called on a device that was not open!");
1122 dpriv->open_count--;
1124 /* make sure all interfaces are released */
1125 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
1126 if (dev_handle->claimed_interfaces & (1 << i))
1127 libusb_release_interface (dev_handle, i);
1129 if (0 == dpriv->open_count) {
1130 /* delete the device's async event source */
1131 if (priv->cfSource) {
1132 CFRunLoopRemoveSource (libusb_darwin_acfl, priv->cfSource, kCFRunLoopDefaultMode);
1133 CFRelease (priv->cfSource);
1134 priv->cfSource = NULL;
1135 CFRelease (libusb_darwin_acfl);
1138 if (priv->is_open) {
1139 /* close the device */
1140 kresult = (*(dpriv->device))->USBDeviceClose(dpriv->device);
1142 /* Log the fact that we had a problem closing the file, however failing a
1143 * close isn't really an error, so return success anyway */
1144 usbi_warn (HANDLE_CTX (dev_handle), "USBDeviceClose: %s", darwin_error_str(kresult));
1150 static int darwin_get_configuration(struct libusb_device_handle *dev_handle, int *config) {
1151 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1153 *config = (int) dpriv->active_config;
1158 static int darwin_set_configuration(struct libusb_device_handle *dev_handle, int config) {
1159 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1163 /* Setting configuration will invalidate the interface, so we need
1164 to reclaim it. First, dispose of existing interfaces, if any. */
1165 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
1166 if (dev_handle->claimed_interfaces & (1 << i))
1167 darwin_release_interface (dev_handle, i);
1169 kresult = (*(dpriv->device))->SetConfiguration (dpriv->device, config);
1170 if (kresult != kIOReturnSuccess)
1171 return darwin_to_libusb (kresult);
1173 /* Reclaim any interfaces. */
1174 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
1175 if (dev_handle->claimed_interfaces & (1 << i))
1176 darwin_claim_interface (dev_handle, i);
1178 dpriv->active_config = config;
1183 static int darwin_get_interface (usb_device_t **darwin_device, uint8_t ifc, io_service_t *usbInterfacep) {
1184 IOUSBFindInterfaceRequest request;
1185 kern_return_t kresult;
1186 io_iterator_t interface_iterator;
1187 UInt8 bInterfaceNumber;
1190 *usbInterfacep = IO_OBJECT_NULL;
1192 /* Setup the Interface Request */
1193 request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
1194 request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
1195 request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
1196 request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
1198 kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
1202 while ((*usbInterfacep = IOIteratorNext(interface_iterator))) {
1203 /* find the interface number */
1204 ret = get_ioregistry_value_number (*usbInterfacep, CFSTR("bInterfaceNumber"), kCFNumberSInt8Type,
1207 if (ret && bInterfaceNumber == ifc) {
1211 (void) IOObjectRelease (*usbInterfacep);
1214 /* done with the interface iterator */
1215 IOObjectRelease(interface_iterator);
1220 static int get_endpoints (struct libusb_device_handle *dev_handle, int iface) {
1221 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1223 /* current interface */
1224 struct darwin_interface *cInterface = &priv->interfaces[iface];
1226 kern_return_t kresult;
1228 u_int8_t numep, direction, number;
1229 u_int8_t dont_care1, dont_care3;
1230 u_int16_t dont_care2;
1233 usbi_dbg ("building table of endpoints.");
1235 /* retrieve the total number of endpoints on this interface */
1236 kresult = (*(cInterface->interface))->GetNumEndpoints(cInterface->interface, &numep);
1238 usbi_err (HANDLE_CTX (dev_handle), "can't get number of endpoints for interface: %s", darwin_error_str(kresult));
1239 return darwin_to_libusb (kresult);
1242 /* iterate through pipe references */
1243 for (int i = 1 ; i <= numep ; i++) {
1244 kresult = (*(cInterface->interface))->GetPipeProperties(cInterface->interface, i, &direction, &number, &dont_care1,
1245 &dont_care2, &dont_care3);
1247 if (kresult != kIOReturnSuccess) {
1248 /* probably a buggy device. try to get the endpoint address from the descriptors */
1249 struct libusb_config_descriptor *config;
1250 const struct libusb_endpoint_descriptor *endpoint_desc;
1253 kresult = (*(cInterface->interface))->GetAlternateSetting (cInterface->interface, &alt_setting);
1255 usbi_err (HANDLE_CTX (dev_handle), "can't get alternate setting for interface");
1256 return darwin_to_libusb (kresult);
1259 rc = libusb_get_active_config_descriptor (dev_handle->dev, &config);
1260 if (LIBUSB_SUCCESS != rc) {
1264 endpoint_desc = config->interface[iface].altsetting[alt_setting].endpoint + i - 1;
1266 cInterface->endpoint_addrs[i - 1] = endpoint_desc->bEndpointAddress;
1268 cInterface->endpoint_addrs[i - 1] = (((kUSBIn == direction) << kUSBRqDirnShift) | (number & LIBUSB_ENDPOINT_ADDRESS_MASK));
1271 usbi_dbg ("interface: %i pipe %i: dir: %i number: %i", iface, i, cInterface->endpoint_addrs[i - 1] >> kUSBRqDirnShift,
1272 cInterface->endpoint_addrs[i - 1] & LIBUSB_ENDPOINT_ADDRESS_MASK);
1275 cInterface->num_endpoints = numep;
1280 static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface) {
1281 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1282 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1283 io_service_t usbInterface = IO_OBJECT_NULL;
1285 IOCFPlugInInterface **plugInInterface = NULL;
1288 /* current interface */
1289 struct darwin_interface *cInterface = &priv->interfaces[iface];
1291 kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
1292 if (kresult != kIOReturnSuccess)
1293 return darwin_to_libusb (kresult);
1295 /* make sure we have an interface */
1296 if (!usbInterface && dpriv->first_config != 0) {
1297 usbi_info (HANDLE_CTX (dev_handle), "no interface found; setting configuration: %d", dpriv->first_config);
1299 /* set the configuration */
1300 kresult = darwin_set_configuration (dev_handle, dpriv->first_config);
1301 if (kresult != LIBUSB_SUCCESS) {
1302 usbi_err (HANDLE_CTX (dev_handle), "could not set configuration");
1306 kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
1308 usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult));
1309 return darwin_to_libusb (kresult);
1313 if (!usbInterface) {
1314 usbi_err (HANDLE_CTX (dev_handle), "interface not found");
1315 return LIBUSB_ERROR_NOT_FOUND;
1318 /* get an interface to the device's interface */
1319 kresult = IOCreatePlugInInterfaceForService (usbInterface, kIOUSBInterfaceUserClientTypeID,
1320 kIOCFPlugInInterfaceID, &plugInInterface, &score);
1322 /* ignore release error */
1323 (void)IOObjectRelease (usbInterface);
1326 usbi_err (HANDLE_CTX (dev_handle), "IOCreatePlugInInterfaceForService: %s", darwin_error_str(kresult));
1327 return darwin_to_libusb (kresult);
1330 if (!plugInInterface) {
1331 usbi_err (HANDLE_CTX (dev_handle), "plugin interface not found");
1332 return LIBUSB_ERROR_NOT_FOUND;
1335 /* Do the actual claim */
1336 kresult = (*plugInInterface)->QueryInterface(plugInInterface,
1337 CFUUIDGetUUIDBytes(kIOUSBInterfaceInterfaceID),
1338 (LPVOID)&cInterface->interface);
1339 /* We no longer need the intermediate plug-in */
1340 /* Use release instead of IODestroyPlugInInterface to avoid stopping IOServices associated with this device */
1341 (*plugInInterface)->Release (plugInInterface);
1342 if (kresult || !cInterface->interface) {
1343 usbi_err (HANDLE_CTX (dev_handle), "QueryInterface: %s", darwin_error_str(kresult));
1344 return darwin_to_libusb (kresult);
1347 /* claim the interface */
1348 kresult = (*(cInterface->interface))->USBInterfaceOpen(cInterface->interface);
1350 usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceOpen: %s", darwin_error_str(kresult));
1351 return darwin_to_libusb (kresult);
1354 /* update list of endpoints */
1355 kresult = get_endpoints (dev_handle, iface);
1357 /* this should not happen */
1358 darwin_release_interface (dev_handle, iface);
1359 usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table");
1363 cInterface->cfSource = NULL;
1365 /* create async event source */
1366 kresult = (*(cInterface->interface))->CreateInterfaceAsyncEventSource (cInterface->interface, &cInterface->cfSource);
1367 if (kresult != kIOReturnSuccess) {
1368 usbi_err (HANDLE_CTX (dev_handle), "could not create async event source");
1370 /* can't continue without an async event source */
1371 (void)darwin_release_interface (dev_handle, iface);
1373 return darwin_to_libusb (kresult);
1376 /* add the cfSource to the async thread's run loop */
1377 CFRunLoopAddSource(libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
1379 usbi_dbg ("interface opened");
1384 static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface) {
1385 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1388 /* current interface */
1389 struct darwin_interface *cInterface = &priv->interfaces[iface];
1391 /* Check to see if an interface is open */
1392 if (!cInterface->interface)
1393 return LIBUSB_SUCCESS;
1395 /* clean up endpoint data */
1396 cInterface->num_endpoints = 0;
1398 /* delete the interface's async event source */
1399 if (cInterface->cfSource) {
1400 CFRunLoopRemoveSource (libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
1401 CFRelease (cInterface->cfSource);
1404 kresult = (*(cInterface->interface))->USBInterfaceClose(cInterface->interface);
1406 usbi_warn (HANDLE_CTX (dev_handle), "USBInterfaceClose: %s", darwin_error_str(kresult));
1408 kresult = (*(cInterface->interface))->Release(cInterface->interface);
1409 if (kresult != kIOReturnSuccess)
1410 usbi_warn (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult));
1412 cInterface->interface = (usb_interface_t **) IO_OBJECT_NULL;
1414 return darwin_to_libusb (kresult);
1417 static int darwin_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) {
1418 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1421 /* current interface */
1422 struct darwin_interface *cInterface = &priv->interfaces[iface];
1424 if (!cInterface->interface)
1425 return LIBUSB_ERROR_NO_DEVICE;
1427 kresult = (*(cInterface->interface))->SetAlternateInterface (cInterface->interface, altsetting);
1428 if (kresult != kIOReturnSuccess)
1429 darwin_reset_device (dev_handle);
1431 /* update list of endpoints */
1432 kresult = get_endpoints (dev_handle, iface);
1434 /* this should not happen */
1435 darwin_release_interface (dev_handle, iface);
1436 usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table");
1440 return darwin_to_libusb (kresult);
1443 static int darwin_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) {
1444 /* current interface */
1445 struct darwin_interface *cInterface;
1449 /* determine the interface/endpoint to use */
1450 if (ep_to_pipeRef (dev_handle, endpoint, &pipeRef, NULL, &cInterface) != 0) {
1451 usbi_err (HANDLE_CTX (dev_handle), "endpoint not found on any open interface");
1453 return LIBUSB_ERROR_NOT_FOUND;
1456 /* newer versions of darwin support clearing additional bits on the device's endpoint */
1457 kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
1459 usbi_warn (HANDLE_CTX (dev_handle), "ClearPipeStall: %s", darwin_error_str (kresult));
1461 return darwin_to_libusb (kresult);
1464 static int darwin_reset_device(struct libusb_device_handle *dev_handle) {
1465 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1466 IOUSBDeviceDescriptor descriptor;
1467 IOUSBConfigurationDescriptorPtr cached_configuration;
1468 IOUSBConfigurationDescriptor configuration;
1469 bool reenumerate = false;
1473 kresult = (*(dpriv->device))->ResetDevice (dpriv->device);
1475 usbi_err (HANDLE_CTX (dev_handle), "ResetDevice: %s", darwin_error_str (kresult));
1476 return darwin_to_libusb (kresult);
1480 usbi_dbg ("darwin/reset_device: checking if device descriptor changed");
1482 /* ignore return code. if we can't get a descriptor it might be worthwhile re-enumerating anway */
1483 (void) darwin_request_descriptor (dpriv->device, kUSBDeviceDesc, 0, &descriptor, sizeof (descriptor));
1485 /* check if the device descriptor has changed */
1486 if (0 != memcmp (&dpriv->dev_descriptor, &descriptor, sizeof (descriptor))) {
1491 /* check if any configuration descriptor has changed */
1492 for (i = 0 ; i < descriptor.bNumConfigurations ; ++i) {
1493 usbi_dbg ("darwin/reset_device: checking if configuration descriptor %d changed", i);
1495 (void) darwin_request_descriptor (dpriv->device, kUSBConfDesc, i, &configuration, sizeof (configuration));
1496 (*(dpriv->device))->GetConfigurationDescriptorPtr (dpriv->device, i, &cached_configuration);
1498 if (!cached_configuration || 0 != memcmp (cached_configuration, &configuration, sizeof (configuration))) {
1506 usbi_dbg ("darwin/reset_device: device requires reenumeration");
1507 (void) (*(dpriv->device))->USBDeviceReEnumerate (dpriv->device, 0);
1508 return LIBUSB_ERROR_NOT_FOUND;
1511 usbi_dbg ("darwin/reset_device: device reset complete");
1513 return LIBUSB_SUCCESS;
1516 static int darwin_kernel_driver_active(struct libusb_device_handle *dev_handle, int interface) {
1517 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1518 io_service_t usbInterface;
1522 kresult = darwin_get_interface (dpriv->device, interface, &usbInterface);
1524 usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult));
1526 return darwin_to_libusb (kresult);
1529 driver = IORegistryEntryCreateCFProperty (usbInterface, kIOBundleIdentifierKey, kCFAllocatorDefault, 0);
1530 IOObjectRelease (usbInterface);
1542 /* attaching/detaching kernel drivers is not currently supported (maybe in the future?) */
1543 static int darwin_attach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) {
1546 return LIBUSB_ERROR_NOT_SUPPORTED;
1549 static int darwin_detach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) {
1552 return LIBUSB_ERROR_NOT_SUPPORTED;
1555 static void darwin_destroy_device(struct libusb_device *dev) {
1556 struct darwin_device_priv *dpriv = (struct darwin_device_priv *) dev->os_priv;
1559 /* need to hold the lock in case this is the last reference to the device */
1560 usbi_mutex_lock(&darwin_cached_devices_lock);
1561 darwin_deref_cached_device (dpriv->dev);
1563 usbi_mutex_unlock(&darwin_cached_devices_lock);
1567 static int submit_bulk_transfer(struct usbi_transfer *itransfer) {
1568 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1571 uint8_t transferType;
1572 /* None of the values below are used in libusbx for bulk transfers */
1573 uint8_t direction, number, interval, pipeRef;
1574 uint16_t maxPacketSize;
1576 struct darwin_interface *cInterface;
1578 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
1579 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1581 return LIBUSB_ERROR_NOT_FOUND;
1584 ret = (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
1585 &transferType, &maxPacketSize, &interval);
1588 usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out",
1589 darwin_error_str(ret), ret);
1590 return darwin_to_libusb (ret);
1593 if (0 != (transfer->length % maxPacketSize)) {
1594 /* do not need a zero packet */
1595 transfer->flags &= ~LIBUSB_TRANSFER_ADD_ZERO_PACKET;
1598 /* submit the request */
1599 /* timeouts are unavailable on interrupt endpoints */
1600 if (transferType == kUSBInterrupt) {
1601 if (IS_XFERIN(transfer))
1602 ret = (*(cInterface->interface))->ReadPipeAsync(cInterface->interface, pipeRef, transfer->buffer,
1603 transfer->length, darwin_async_io_callback, itransfer);
1605 ret = (*(cInterface->interface))->WritePipeAsync(cInterface->interface, pipeRef, transfer->buffer,
1606 transfer->length, darwin_async_io_callback, itransfer);
1608 itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1610 if (IS_XFERIN(transfer))
1611 ret = (*(cInterface->interface))->ReadPipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
1612 transfer->length, transfer->timeout, transfer->timeout,
1613 darwin_async_io_callback, (void *)itransfer);
1615 ret = (*(cInterface->interface))->WritePipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
1616 transfer->length, transfer->timeout, transfer->timeout,
1617 darwin_async_io_callback, (void *)itransfer);
1621 usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out",
1622 darwin_error_str(ret), ret);
1624 return darwin_to_libusb (ret);
1627 #if InterfaceVersion >= 550
1628 static int submit_stream_transfer(struct usbi_transfer *itransfer) {
1629 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1630 struct darwin_interface *cInterface;
1634 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
1635 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1637 return LIBUSB_ERROR_NOT_FOUND;
1640 itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1642 if (IS_XFERIN(transfer))
1643 ret = (*(cInterface->interface))->ReadStreamsPipeAsyncTO(cInterface->interface, pipeRef, itransfer->stream_id,
1644 transfer->buffer, transfer->length, transfer->timeout,
1645 transfer->timeout, darwin_async_io_callback, (void *)itransfer);
1647 ret = (*(cInterface->interface))->WriteStreamsPipeAsyncTO(cInterface->interface, pipeRef, itransfer->stream_id,
1648 transfer->buffer, transfer->length, transfer->timeout,
1649 transfer->timeout, darwin_async_io_callback, (void *)itransfer);
1652 usbi_err (TRANSFER_CTX (transfer), "bulk stream transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out",
1653 darwin_error_str(ret), ret);
1655 return darwin_to_libusb (ret);
1659 static int submit_iso_transfer(struct usbi_transfer *itransfer) {
1660 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1661 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1664 uint8_t direction, number, interval, pipeRef, transferType;
1665 uint16_t maxPacketSize;
1667 AbsoluteTime atTime;
1670 struct darwin_interface *cInterface;
1672 /* construct an array of IOUSBIsocFrames, reuse the old one if possible */
1673 if (tpriv->isoc_framelist && tpriv->num_iso_packets != transfer->num_iso_packets) {
1674 free(tpriv->isoc_framelist);
1675 tpriv->isoc_framelist = NULL;
1678 if (!tpriv->isoc_framelist) {
1679 tpriv->num_iso_packets = transfer->num_iso_packets;
1680 tpriv->isoc_framelist = (IOUSBIsocFrame*) calloc (transfer->num_iso_packets, sizeof(IOUSBIsocFrame));
1681 if (!tpriv->isoc_framelist)
1682 return LIBUSB_ERROR_NO_MEM;
1685 /* copy the frame list from the libusb descriptor (the structures differ only is member order) */
1686 for (i = 0 ; i < transfer->num_iso_packets ; i++)
1687 tpriv->isoc_framelist[i].frReqCount = transfer->iso_packet_desc[i].length;
1689 /* determine the interface/endpoint to use */
1690 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
1691 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1693 return LIBUSB_ERROR_NOT_FOUND;
1696 /* determine the properties of this endpoint and the speed of the device */
1697 (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
1698 &transferType, &maxPacketSize, &interval);
1700 /* Last but not least we need the bus frame number */
1701 kresult = (*(cInterface->interface))->GetBusFrameNumber(cInterface->interface, &frame, &atTime);
1703 usbi_err (TRANSFER_CTX (transfer), "failed to get bus frame number: %d", kresult);
1704 free(tpriv->isoc_framelist);
1705 tpriv->isoc_framelist = NULL;
1707 return darwin_to_libusb (kresult);
1710 (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
1711 &transferType, &maxPacketSize, &interval);
1713 /* schedule for a frame a little in the future */
1716 if (cInterface->frames[transfer->endpoint] && frame < cInterface->frames[transfer->endpoint])
1717 frame = cInterface->frames[transfer->endpoint];
1719 /* submit the request */
1720 if (IS_XFERIN(transfer))
1721 kresult = (*(cInterface->interface))->ReadIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
1722 transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
1725 kresult = (*(cInterface->interface))->WriteIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
1726 transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
1729 if (LIBUSB_SPEED_FULL == transfer->dev_handle->dev->speed)
1731 cInterface->frames[transfer->endpoint] = frame + transfer->num_iso_packets * (1 << (interval - 1));
1733 /* High/super speed */
1734 cInterface->frames[transfer->endpoint] = frame + transfer->num_iso_packets * (1 << (interval - 1)) / 8;
1736 if (kresult != kIOReturnSuccess) {
1737 usbi_err (TRANSFER_CTX (transfer), "isochronous transfer failed (dir: %s): %s", IS_XFERIN(transfer) ? "In" : "Out",
1738 darwin_error_str(kresult));
1739 free (tpriv->isoc_framelist);
1740 tpriv->isoc_framelist = NULL;
1743 return darwin_to_libusb (kresult);
1746 static int submit_control_transfer(struct usbi_transfer *itransfer) {
1747 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1748 struct libusb_control_setup *setup = (struct libusb_control_setup *) transfer->buffer;
1749 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev);
1750 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1754 memset(&tpriv->req, 0, sizeof(tpriv->req));
1756 /* IOUSBDeviceInterface expects the request in cpu endianness */
1757 tpriv->req.bmRequestType = setup->bmRequestType;
1758 tpriv->req.bRequest = setup->bRequest;
1759 /* these values should be in bus order from libusb_fill_control_setup */
1760 tpriv->req.wValue = OSSwapLittleToHostInt16 (setup->wValue);
1761 tpriv->req.wIndex = OSSwapLittleToHostInt16 (setup->wIndex);
1762 tpriv->req.wLength = OSSwapLittleToHostInt16 (setup->wLength);
1763 /* data is stored after the libusb control block */
1764 tpriv->req.pData = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE;
1765 tpriv->req.completionTimeout = transfer->timeout;
1766 tpriv->req.noDataTimeout = transfer->timeout;
1768 itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1770 /* all transfers in libusb-1.0 are async */
1772 if (transfer->endpoint) {
1773 struct darwin_interface *cInterface;
1776 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
1777 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1779 return LIBUSB_ERROR_NOT_FOUND;
1782 kresult = (*(cInterface->interface))->ControlRequestAsyncTO (cInterface->interface, pipeRef, &(tpriv->req), darwin_async_io_callback, itransfer);
1784 /* control request on endpoint 0 */
1785 kresult = (*(dpriv->device))->DeviceRequestAsyncTO(dpriv->device, &(tpriv->req), darwin_async_io_callback, itransfer);
1787 if (kresult != kIOReturnSuccess)
1788 usbi_err (TRANSFER_CTX (transfer), "control request failed: %s", darwin_error_str(kresult));
1790 return darwin_to_libusb (kresult);
1793 static int darwin_submit_transfer(struct usbi_transfer *itransfer) {
1794 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1796 switch (transfer->type) {
1797 case LIBUSB_TRANSFER_TYPE_CONTROL:
1798 return submit_control_transfer(itransfer);
1799 case LIBUSB_TRANSFER_TYPE_BULK:
1800 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
1801 return submit_bulk_transfer(itransfer);
1802 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
1803 return submit_iso_transfer(itransfer);
1804 case LIBUSB_TRANSFER_TYPE_BULK_STREAM:
1805 #if InterfaceVersion >= 550
1806 return submit_stream_transfer(itransfer);
1808 usbi_err (TRANSFER_CTX(transfer), "IOUSBFamily version does not support bulk stream transfers");
1809 return LIBUSB_ERROR_NOT_SUPPORTED;
1812 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1813 return LIBUSB_ERROR_INVALID_PARAM;
1817 static int cancel_control_transfer(struct usbi_transfer *itransfer) {
1818 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1819 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev);
1822 usbi_warn (ITRANSFER_CTX (itransfer), "aborting all transactions control pipe");
1825 return LIBUSB_ERROR_NO_DEVICE;
1827 kresult = (*(dpriv->device))->USBDeviceAbortPipeZero (dpriv->device);
1829 return darwin_to_libusb (kresult);
1832 static int darwin_abort_transfers (struct usbi_transfer *itransfer) {
1833 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1834 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev);
1835 struct darwin_interface *cInterface;
1836 uint8_t pipeRef, iface;
1839 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface, &cInterface) != 0) {
1840 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1842 return LIBUSB_ERROR_NOT_FOUND;
1846 return LIBUSB_ERROR_NO_DEVICE;
1848 usbi_warn (ITRANSFER_CTX (itransfer), "aborting all transactions on interface %d pipe %d", iface, pipeRef);
1850 /* abort transactions */
1851 #if InterfaceVersion >= 550
1852 if (LIBUSB_TRANSFER_TYPE_BULK_STREAM == transfer->type)
1853 (*(cInterface->interface))->AbortStreamsPipe (cInterface->interface, pipeRef, itransfer->stream_id);
1856 (*(cInterface->interface))->AbortPipe (cInterface->interface, pipeRef);
1858 usbi_dbg ("calling clear pipe stall to clear the data toggle bit");
1860 /* newer versions of darwin support clearing additional bits on the device's endpoint */
1861 kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
1863 return darwin_to_libusb (kresult);
1866 static int darwin_cancel_transfer(struct usbi_transfer *itransfer) {
1867 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1869 switch (transfer->type) {
1870 case LIBUSB_TRANSFER_TYPE_CONTROL:
1871 return cancel_control_transfer(itransfer);
1872 case LIBUSB_TRANSFER_TYPE_BULK:
1873 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
1874 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
1875 return darwin_abort_transfers (itransfer);
1877 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1878 return LIBUSB_ERROR_INVALID_PARAM;
1882 static void darwin_clear_transfer_priv (struct usbi_transfer *itransfer) {
1883 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1884 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1886 if (transfer->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS && tpriv->isoc_framelist) {
1887 free (tpriv->isoc_framelist);
1888 tpriv->isoc_framelist = NULL;
1892 static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0) {
1893 struct usbi_transfer *itransfer = (struct usbi_transfer *)refcon;
1894 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1895 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1897 usbi_dbg ("an async io operation has completed");
1899 /* if requested write a zero packet */
1900 if (kIOReturnSuccess == result && IS_XFEROUT(transfer) && transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) {
1901 struct darwin_interface *cInterface;
1904 (void) ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface);
1906 (*(cInterface->interface))->WritePipe (cInterface->interface, pipeRef, transfer->buffer, 0);
1909 tpriv->result = result;
1910 tpriv->size = (UInt32) (uintptr_t) arg0;
1912 /* signal the core that this transfer is complete */
1913 usbi_signal_transfer_completion(itransfer);
1916 static int darwin_transfer_status (struct usbi_transfer *itransfer, kern_return_t result) {
1917 if (itransfer->timeout_flags & USBI_TRANSFER_TIMED_OUT)
1918 result = kIOUSBTransactionTimeout;
1921 case kIOReturnUnderrun:
1922 case kIOReturnSuccess:
1923 return LIBUSB_TRANSFER_COMPLETED;
1924 case kIOReturnAborted:
1925 return LIBUSB_TRANSFER_CANCELLED;
1926 case kIOUSBPipeStalled:
1927 usbi_dbg ("transfer error: pipe is stalled");
1928 return LIBUSB_TRANSFER_STALL;
1929 case kIOReturnOverrun:
1930 usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: data overrun");
1931 return LIBUSB_TRANSFER_OVERFLOW;
1932 case kIOUSBTransactionTimeout:
1933 usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: timed out");
1934 itransfer->timeout_flags |= USBI_TRANSFER_TIMED_OUT;
1935 return LIBUSB_TRANSFER_TIMED_OUT;
1937 usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: %s (value = 0x%08x)", darwin_error_str (result), result);
1938 return LIBUSB_TRANSFER_ERROR;
1942 static int darwin_handle_transfer_completion (struct usbi_transfer *itransfer) {
1943 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1944 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1945 int isIsoc = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS == transfer->type;
1946 int isBulk = LIBUSB_TRANSFER_TYPE_BULK == transfer->type;
1947 int isControl = LIBUSB_TRANSFER_TYPE_CONTROL == transfer->type;
1948 int isInterrupt = LIBUSB_TRANSFER_TYPE_INTERRUPT == transfer->type;
1951 if (!isIsoc && !isBulk && !isControl && !isInterrupt) {
1952 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1953 return LIBUSB_ERROR_INVALID_PARAM;
1956 usbi_dbg ("handling %s completion with kernel status %d",
1957 isControl ? "control" : isBulk ? "bulk" : isIsoc ? "isoc" : "interrupt", tpriv->result);
1959 if (kIOReturnSuccess == tpriv->result || kIOReturnUnderrun == tpriv->result) {
1960 if (isIsoc && tpriv->isoc_framelist) {
1961 /* copy isochronous results back */
1963 for (i = 0; i < transfer->num_iso_packets ; i++) {
1964 struct libusb_iso_packet_descriptor *lib_desc = &transfer->iso_packet_desc[i];
1965 lib_desc->status = darwin_to_libusb (tpriv->isoc_framelist[i].frStatus);
1966 lib_desc->actual_length = tpriv->isoc_framelist[i].frActCount;
1969 itransfer->transferred += tpriv->size;
1972 /* it is ok to handle cancelled transfers without calling usbi_handle_transfer_cancellation (we catch timeout transfers) */
1973 return usbi_handle_transfer_completion (itransfer, darwin_transfer_status (itransfer, tpriv->result));
1976 static int darwin_clock_gettime(int clk_id, struct timespec *tp) {
1977 #if !OSX_USE_CLOCK_GETTIME
1978 mach_timespec_t sys_time;
1979 clock_serv_t clock_ref;
1982 case USBI_CLOCK_REALTIME:
1983 /* CLOCK_REALTIME represents time since the epoch */
1984 clock_ref = clock_realtime;
1986 case USBI_CLOCK_MONOTONIC:
1987 /* use system boot time as reference for the monotonic clock */
1988 clock_ref = clock_monotonic;
1991 return LIBUSB_ERROR_INVALID_PARAM;
1994 clock_get_time (clock_ref, &sys_time);
1996 tp->tv_sec = sys_time.tv_sec;
1997 tp->tv_nsec = sys_time.tv_nsec;
2002 case USBI_CLOCK_MONOTONIC:
2003 return clock_gettime(CLOCK_MONOTONIC, tp);
2004 case USBI_CLOCK_REALTIME:
2005 return clock_gettime(CLOCK_REALTIME, tp);
2007 return LIBUSB_ERROR_INVALID_PARAM;
2012 #if InterfaceVersion >= 550
2013 static int darwin_alloc_streams (struct libusb_device_handle *dev_handle, uint32_t num_streams, unsigned char *endpoints,
2014 int num_endpoints) {
2015 struct darwin_interface *cInterface;
2016 UInt32 supportsStreams;
2020 /* find the mimimum number of supported streams on the endpoint list */
2021 for (i = 0 ; i < num_endpoints ; ++i) {
2022 if (0 != (rc = ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface))) {
2026 (*(cInterface->interface))->SupportsStreams (cInterface->interface, pipeRef, &supportsStreams);
2027 if (num_streams > supportsStreams)
2028 num_streams = supportsStreams;
2031 /* it is an error if any endpoint in endpoints does not support streams */
2032 if (0 == num_streams)
2033 return LIBUSB_ERROR_INVALID_PARAM;
2035 /* create the streams */
2036 for (i = 0 ; i < num_endpoints ; ++i) {
2037 (void) ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface);
2039 rc = (*(cInterface->interface))->CreateStreams (cInterface->interface, pipeRef, num_streams);
2040 if (kIOReturnSuccess != rc)
2041 return darwin_to_libusb(rc);
2047 static int darwin_free_streams (struct libusb_device_handle *dev_handle, unsigned char *endpoints, int num_endpoints) {
2048 struct darwin_interface *cInterface;
2049 UInt32 supportsStreams;
2053 for (int i = 0 ; i < num_endpoints ; ++i) {
2054 if (0 != (rc = ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface)))
2057 (*(cInterface->interface))->SupportsStreams (cInterface->interface, pipeRef, &supportsStreams);
2058 if (0 == supportsStreams)
2059 return LIBUSB_ERROR_INVALID_PARAM;
2061 rc = (*(cInterface->interface))->CreateStreams (cInterface->interface, pipeRef, 0);
2062 if (kIOReturnSuccess != rc)
2063 return darwin_to_libusb(rc);
2066 return LIBUSB_SUCCESS;
2070 const struct usbi_os_backend darwin_backend = {
2073 .init = darwin_init,
2074 .exit = darwin_exit,
2075 .get_device_list = NULL, /* not needed */
2076 .get_device_descriptor = darwin_get_device_descriptor,
2077 .get_active_config_descriptor = darwin_get_active_config_descriptor,
2078 .get_config_descriptor = darwin_get_config_descriptor,
2079 .hotplug_poll = darwin_hotplug_poll,
2081 .open = darwin_open,
2082 .close = darwin_close,
2083 .get_configuration = darwin_get_configuration,
2084 .set_configuration = darwin_set_configuration,
2085 .claim_interface = darwin_claim_interface,
2086 .release_interface = darwin_release_interface,
2088 .set_interface_altsetting = darwin_set_interface_altsetting,
2089 .clear_halt = darwin_clear_halt,
2090 .reset_device = darwin_reset_device,
2092 #if InterfaceVersion >= 550
2093 .alloc_streams = darwin_alloc_streams,
2094 .free_streams = darwin_free_streams,
2097 .kernel_driver_active = darwin_kernel_driver_active,
2098 .detach_kernel_driver = darwin_detach_kernel_driver,
2099 .attach_kernel_driver = darwin_attach_kernel_driver,
2101 .destroy_device = darwin_destroy_device,
2103 .submit_transfer = darwin_submit_transfer,
2104 .cancel_transfer = darwin_cancel_transfer,
2105 .clear_transfer_priv = darwin_clear_transfer_priv,
2107 .handle_transfer_completion = darwin_handle_transfer_completion,
2109 .clock_gettime = darwin_clock_gettime,
2111 .device_priv_size = sizeof(struct darwin_device_priv),
2112 .device_handle_priv_size = sizeof(struct darwin_device_handle_priv),
2113 .transfer_priv_size = sizeof(struct darwin_transfer_priv),