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 (struct libusb_context *ctx) {
560 if (libusb_darwin_atomic_fetch_add (&initCount, -1) == 1) {
561 #if !OSX_USE_CLOCK_GETTIME
562 mach_port_deallocate(mach_task_self(), clock_realtime);
563 mach_port_deallocate(mach_task_self(), clock_monotonic);
566 /* stop the event runloop and wait for the thread to terminate. */
567 CFRunLoopSourceSignal(libusb_darwin_acfls);
568 CFRunLoopWakeUp (libusb_darwin_acfl);
569 pthread_join (libusb_darwin_at, NULL);
573 static int darwin_get_device_descriptor(struct libusb_device *dev, unsigned char *buffer, int *host_endian) {
574 struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev);
576 /* return cached copy */
577 memmove (buffer, &(priv->dev_descriptor), DEVICE_DESC_LENGTH);
584 static int get_configuration_index (struct libusb_device *dev, int config_value) {
585 struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev);
587 IOUSBConfigurationDescriptorPtr desc;
590 /* is there a simpler way to determine the index? */
591 kresult = (*(priv->device))->GetNumberOfConfigurations (priv->device, &numConfig);
592 if (kresult != kIOReturnSuccess)
593 return darwin_to_libusb (kresult);
595 for (i = 0 ; i < numConfig ; i++) {
596 (*(priv->device))->GetConfigurationDescriptorPtr (priv->device, i, &desc);
598 if (desc->bConfigurationValue == config_value)
602 /* configuration not found */
603 return LIBUSB_ERROR_NOT_FOUND;
606 static int darwin_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian) {
607 struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev);
610 if (0 == priv->active_config)
611 return LIBUSB_ERROR_NOT_FOUND;
613 config_index = get_configuration_index (dev, priv->active_config);
614 if (config_index < 0)
617 return darwin_get_config_descriptor (dev, config_index, buffer, len, host_endian);
620 static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) {
621 struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev);
622 IOUSBConfigurationDescriptorPtr desc;
626 if (!priv || !priv->device)
627 return LIBUSB_ERROR_OTHER;
629 kresult = (*priv->device)->GetConfigurationDescriptorPtr (priv->device, config_index, &desc);
630 if (kresult == kIOReturnSuccess) {
631 /* copy descriptor */
632 if (libusb_le16_to_cpu(desc->wTotalLength) < len)
633 len = libusb_le16_to_cpu(desc->wTotalLength);
635 memmove (buffer, desc, len);
637 /* GetConfigurationDescriptorPtr returns the descriptor in USB bus order */
641 ret = darwin_to_libusb (kresult);
642 if (ret != LIBUSB_SUCCESS)
648 /* check whether the os has configured the device */
649 static int darwin_check_configuration (struct libusb_context *ctx, struct darwin_cached_device *dev) {
650 usb_device_t **darwin_device = dev->device;
652 IOUSBConfigurationDescriptorPtr configDesc;
653 IOUSBFindInterfaceRequest request;
654 kern_return_t kresult;
655 io_iterator_t interface_iterator;
656 io_service_t firstInterface;
658 if (dev->dev_descriptor.bNumConfigurations < 1) {
659 usbi_err (ctx, "device has no configurations");
660 return LIBUSB_ERROR_OTHER; /* no configurations at this speed so we can't use it */
663 /* checking the configuration of a root hub simulation takes ~1 s in 10.11. the device is
665 if (0x05ac == dev->dev_descriptor.idVendor && 0x8005 == dev->dev_descriptor.idProduct) {
666 usbi_dbg ("ignoring configuration on root hub simulation");
667 dev->active_config = 0;
671 /* find the first configuration */
672 kresult = (*darwin_device)->GetConfigurationDescriptorPtr (darwin_device, 0, &configDesc);
673 dev->first_config = (kIOReturnSuccess == kresult) ? configDesc->bConfigurationValue : 1;
675 /* check if the device is already configured. there is probably a better way than iterating over the
676 to accomplish this (the trick is we need to avoid a call to GetConfigurations since buggy devices
677 might lock up on the device request) */
679 /* Setup the Interface Request */
680 request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
681 request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
682 request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
683 request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
685 kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
687 return darwin_to_libusb (kresult);
690 firstInterface = IOIteratorNext(interface_iterator);
692 /* done with the interface iterator */
693 IOObjectRelease(interface_iterator);
695 if (firstInterface) {
696 IOObjectRelease (firstInterface);
698 /* device is configured */
699 if (dev->dev_descriptor.bNumConfigurations == 1)
700 /* to avoid problems with some devices get the configurations value from the configuration descriptor */
701 dev->active_config = dev->first_config;
703 /* devices with more than one configuration should work with GetConfiguration */
704 (*darwin_device)->GetConfiguration (darwin_device, &dev->active_config);
707 dev->active_config = 0;
709 usbi_dbg ("active config: %u, first config: %u", dev->active_config, dev->first_config);
714 static int darwin_request_descriptor (usb_device_t **device, UInt8 desc, UInt8 desc_index, void *buffer, size_t buffer_size) {
715 IOUSBDevRequestTO req;
717 memset (buffer, 0, buffer_size);
719 /* Set up request for descriptor/ */
720 req.bmRequestType = USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice);
721 req.bRequest = kUSBRqGetDescriptor;
722 req.wValue = desc << 8;
723 req.wIndex = desc_index;
724 req.wLength = buffer_size;
726 req.noDataTimeout = 20;
727 req.completionTimeout = 100;
729 return (*device)->DeviceRequestTO (device, &req);
732 static int darwin_cache_device_descriptor (struct libusb_context *ctx, struct darwin_cached_device *dev) {
733 usb_device_t **device = dev->device;
734 int retries = 1, delay = 30000;
735 int unsuspended = 0, try_unsuspend = 1, try_reconfigure = 1;
739 UInt16 idProduct, idVendor;
741 dev->can_enumerate = 0;
743 (*device)->GetDeviceClass (device, &bDeviceClass);
744 (*device)->GetDeviceProduct (device, &idProduct);
745 (*device)->GetDeviceVendor (device, &idVendor);
747 /* According to Apple's documentation the device must be open for DeviceRequest but we may not be able to open some
748 * devices and Apple's USB Prober doesn't bother to open the device before issuing a descriptor request. Still,
749 * to follow the spec as closely as possible, try opening the device */
750 is_open = ((*device)->USBDeviceOpenSeize(device) == kIOReturnSuccess);
753 /**** retrieve device descriptor ****/
754 ret = darwin_request_descriptor (device, kUSBDeviceDesc, 0, &dev->dev_descriptor, sizeof(dev->dev_descriptor));
756 if (kIOReturnOverrun == ret && kUSBDeviceDesc == dev->dev_descriptor.bDescriptorType)
757 /* received an overrun error but we still received a device descriptor */
758 ret = kIOReturnSuccess;
760 if (kIOUSBVendorIDAppleComputer == idVendor) {
761 /* NTH: don't bother retrying or unsuspending Apple devices */
765 if (kIOReturnSuccess == ret && (0 == dev->dev_descriptor.bNumConfigurations ||
766 0 == dev->dev_descriptor.bcdUSB)) {
767 /* work around for incorrectly configured devices */
768 if (try_reconfigure && is_open) {
769 usbi_dbg("descriptor appears to be invalid. resetting configuration before trying again...");
771 /* set the first configuration */
772 (*device)->SetConfiguration(device, 1);
774 /* don't try to reconfigure again */
778 ret = kIOUSBPipeStalled;
781 if (kIOReturnSuccess != ret && is_open && try_unsuspend) {
782 /* device may be suspended. unsuspend it and try again */
783 #if DeviceVersion >= 320
786 /* IOUSBFamily 320+ provides a way to detect device suspension but earlier versions do not */
787 (void)(*device)->GetUSBDeviceInformation (device, &info);
789 /* note that the device was suspended */
790 if (info & (1 << kUSBInformationDeviceIsSuspendedBit) || 0 == info)
795 /* try to unsuspend the device */
796 ret2 = (*device)->USBDeviceSuspend (device, 0);
797 if (kIOReturnSuccess != ret2) {
798 /* prevent log spew from poorly behaving devices. this indicates the
799 os actually had trouble communicating with the device */
800 usbi_dbg("could not retrieve device descriptor. failed to unsuspend: %s",darwin_error_str(ret2));
808 if (kIOReturnSuccess != ret) {
809 usbi_dbg("kernel responded with code: 0x%08x. sleeping for %d ms before trying again", ret, delay/1000);
810 /* sleep for a little while before trying again */
811 nanosleep(&(struct timespec){delay / 1000000, (delay * 1000) % 1000000000UL}, NULL);
813 } while (kIOReturnSuccess != ret && retries--);
816 /* resuspend the device */
817 (void)(*device)->USBDeviceSuspend (device, 1);
820 (void) (*device)->USBDeviceClose (device);
822 if (ret != kIOReturnSuccess) {
823 /* a debug message was already printed out for this error */
824 if (LIBUSB_CLASS_HUB == bDeviceClass)
825 usbi_dbg ("could not retrieve device descriptor %.4x:%.4x: %s (%x). skipping device",
826 idVendor, idProduct, darwin_error_str (ret), ret);
828 usbi_warn (ctx, "could not retrieve device descriptor %.4x:%.4x: %s (%x). skipping device",
829 idVendor, idProduct, darwin_error_str (ret), ret);
830 return darwin_to_libusb (ret);
833 /* catch buggy hubs (which appear to be virtual). Apple's own USB prober has problems with these devices. */
834 if (libusb_le16_to_cpu (dev->dev_descriptor.idProduct) != idProduct) {
835 /* not a valid device */
836 usbi_warn (ctx, "idProduct from iokit (%04x) does not match idProduct in descriptor (%04x). skipping device",
837 idProduct, libusb_le16_to_cpu (dev->dev_descriptor.idProduct));
838 return LIBUSB_ERROR_NO_DEVICE;
841 usbi_dbg ("cached device descriptor:");
842 usbi_dbg (" bDescriptorType: 0x%02x", dev->dev_descriptor.bDescriptorType);
843 usbi_dbg (" bcdUSB: 0x%04x", dev->dev_descriptor.bcdUSB);
844 usbi_dbg (" bDeviceClass: 0x%02x", dev->dev_descriptor.bDeviceClass);
845 usbi_dbg (" bDeviceSubClass: 0x%02x", dev->dev_descriptor.bDeviceSubClass);
846 usbi_dbg (" bDeviceProtocol: 0x%02x", dev->dev_descriptor.bDeviceProtocol);
847 usbi_dbg (" bMaxPacketSize0: 0x%02x", dev->dev_descriptor.bMaxPacketSize0);
848 usbi_dbg (" idVendor: 0x%04x", dev->dev_descriptor.idVendor);
849 usbi_dbg (" idProduct: 0x%04x", dev->dev_descriptor.idProduct);
850 usbi_dbg (" bcdDevice: 0x%04x", dev->dev_descriptor.bcdDevice);
851 usbi_dbg (" iManufacturer: 0x%02x", dev->dev_descriptor.iManufacturer);
852 usbi_dbg (" iProduct: 0x%02x", dev->dev_descriptor.iProduct);
853 usbi_dbg (" iSerialNumber: 0x%02x", dev->dev_descriptor.iSerialNumber);
854 usbi_dbg (" bNumConfigurations: 0x%02x", dev->dev_descriptor.bNumConfigurations);
856 dev->can_enumerate = 1;
858 return LIBUSB_SUCCESS;
861 static int get_device_port (io_service_t service, UInt8 *port) {
862 kern_return_t result;
866 if (get_ioregistry_value_number (service, CFSTR("PortNum"), kCFNumberSInt8Type, port)) {
870 result = IORegistryEntryGetParentEntry (service, kIOServicePlane, &parent);
871 if (kIOReturnSuccess == result) {
872 ret = get_ioregistry_value_data (parent, CFSTR("port"), 1, port);
873 IOObjectRelease (parent);
879 static int get_device_parent_sessionID(io_service_t service, UInt64 *parent_sessionID) {
880 kern_return_t result;
883 /* Walk up the tree in the IOService plane until we find a parent that has a sessionID */
885 while((result = IORegistryEntryGetParentEntry (parent, kIOServicePlane, &parent)) == kIOReturnSuccess) {
886 if (get_ioregistry_value_number (parent, CFSTR("sessionID"), kCFNumberSInt64Type, parent_sessionID)) {
892 /* We ran out of parents */
896 static int darwin_get_cached_device(struct libusb_context *ctx, io_service_t service,
897 struct darwin_cached_device **cached_out) {
898 struct darwin_cached_device *new_device;
899 UInt64 sessionID = 0, parent_sessionID = 0;
900 int ret = LIBUSB_SUCCESS;
901 usb_device_t **device;
904 /* get some info from the io registry */
905 (void) get_ioregistry_value_number (service, CFSTR("sessionID"), kCFNumberSInt64Type, &sessionID);
906 if (!get_device_port (service, &port)) {
907 usbi_dbg("could not get connected port number");
910 usbi_dbg("finding cached device for sessionID 0x%" PRIx64, sessionID);
912 if (get_device_parent_sessionID(service, &parent_sessionID)) {
913 usbi_dbg("parent sessionID: 0x%" PRIx64, parent_sessionID);
916 usbi_mutex_lock(&darwin_cached_devices_lock);
920 list_for_each_entry(new_device, &darwin_cached_devices, list, struct darwin_cached_device) {
921 usbi_dbg("matching sessionID 0x%" PRIx64 " against cached device with sessionID 0x%" PRIx64, sessionID, new_device->session);
922 if (new_device->session == sessionID) {
923 usbi_dbg("using cached device for device");
924 *cached_out = new_device;
932 usbi_dbg("caching new device with sessionID 0x%" PRIx64, sessionID);
934 device = darwin_device_from_service (service);
936 ret = LIBUSB_ERROR_NO_DEVICE;
940 new_device = calloc (1, sizeof (*new_device));
942 ret = LIBUSB_ERROR_NO_MEM;
946 /* add this device to the cached device list */
947 list_add(&new_device->list, &darwin_cached_devices);
949 (*device)->GetDeviceAddress (device, (USBDeviceAddress *)&new_device->address);
951 /* keep a reference to this device */
952 darwin_ref_cached_device(new_device);
954 new_device->device = device;
955 new_device->session = sessionID;
956 (*device)->GetLocationID (device, &new_device->location);
957 new_device->port = port;
958 new_device->parent_session = parent_sessionID;
960 /* cache the device descriptor */
961 ret = darwin_cache_device_descriptor(ctx, new_device);
965 if (new_device->can_enumerate) {
966 snprintf(new_device->sys_path, 20, "%03i-%04x-%04x-%02x-%02x", new_device->address,
967 new_device->dev_descriptor.idVendor, new_device->dev_descriptor.idProduct,
968 new_device->dev_descriptor.bDeviceClass, new_device->dev_descriptor.bDeviceSubClass);
972 usbi_mutex_unlock(&darwin_cached_devices_lock);
974 /* keep track of devices regardless of if we successfully enumerate them to
975 prevent them from being enumerated multiple times */
977 *cached_out = new_device;
982 static int process_new_device (struct libusb_context *ctx, io_service_t service) {
983 struct darwin_device_priv *priv;
984 struct libusb_device *dev = NULL;
985 struct darwin_cached_device *cached_device;
990 ret = darwin_get_cached_device (ctx, service, &cached_device);
992 if (ret < 0 || !cached_device->can_enumerate) {
996 /* check current active configuration (and cache the first configuration value--
997 which may be used by claim_interface) */
998 ret = darwin_check_configuration (ctx, cached_device);
1002 usbi_dbg ("allocating new device in context %p for with session 0x%" PRIx64,
1003 ctx, cached_device->session);
1005 dev = usbi_alloc_device(ctx, (unsigned long) cached_device->session);
1007 return LIBUSB_ERROR_NO_MEM;
1010 priv = (struct darwin_device_priv *)dev->os_priv;
1012 priv->dev = cached_device;
1013 darwin_ref_cached_device (priv->dev);
1015 if (cached_device->parent_session > 0) {
1016 dev->parent_dev = usbi_get_device_by_session_id (ctx, (unsigned long) cached_device->parent_session);
1018 dev->parent_dev = NULL;
1020 dev->port_number = cached_device->port;
1021 dev->bus_number = cached_device->location >> 24;
1022 dev->device_address = cached_device->address;
1024 (*(priv->dev->device))->GetDeviceSpeed (priv->dev->device, &devSpeed);
1027 case kUSBDeviceSpeedLow: dev->speed = LIBUSB_SPEED_LOW; break;
1028 case kUSBDeviceSpeedFull: dev->speed = LIBUSB_SPEED_FULL; break;
1029 case kUSBDeviceSpeedHigh: dev->speed = LIBUSB_SPEED_HIGH; break;
1030 #if DeviceVersion >= 500
1031 case kUSBDeviceSpeedSuper: dev->speed = LIBUSB_SPEED_SUPER; break;
1034 usbi_warn (ctx, "Got unknown device speed %d", devSpeed);
1037 ret = usbi_sanitize_device (dev);
1041 usbi_dbg ("found device with address %d port = %d parent = %p at %p", dev->device_address,
1042 dev->port_number, (void *) dev->parent_dev, priv->dev->sys_path);
1046 usbi_connect_device (dev);
1048 libusb_unref_device (dev);
1054 static int darwin_scan_devices(struct libusb_context *ctx) {
1055 io_iterator_t deviceIterator;
1056 io_service_t service;
1057 kern_return_t kresult;
1059 kresult = usb_setup_device_iterator (&deviceIterator, 0);
1060 if (kresult != kIOReturnSuccess)
1061 return darwin_to_libusb (kresult);
1063 while ((service = IOIteratorNext (deviceIterator))) {
1064 (void) process_new_device (ctx, service);
1066 IOObjectRelease(service);
1069 IOObjectRelease(deviceIterator);
1074 static int darwin_open (struct libusb_device_handle *dev_handle) {
1075 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1076 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1079 if (0 == dpriv->open_count) {
1080 /* try to open the device */
1081 kresult = (*(dpriv->device))->USBDeviceOpenSeize (dpriv->device);
1082 if (kresult != kIOReturnSuccess) {
1083 usbi_warn (HANDLE_CTX (dev_handle), "USBDeviceOpen: %s", darwin_error_str(kresult));
1085 if (kIOReturnExclusiveAccess != kresult) {
1086 return darwin_to_libusb (kresult);
1089 /* it is possible to perform some actions on a device that is not open so do not return an error */
1095 /* create async event source */
1096 kresult = (*(dpriv->device))->CreateDeviceAsyncEventSource (dpriv->device, &priv->cfSource);
1097 if (kresult != kIOReturnSuccess) {
1098 usbi_err (HANDLE_CTX (dev_handle), "CreateDeviceAsyncEventSource: %s", darwin_error_str(kresult));
1100 if (priv->is_open) {
1101 (*(dpriv->device))->USBDeviceClose (dpriv->device);
1106 return darwin_to_libusb (kresult);
1109 CFRetain (libusb_darwin_acfl);
1111 /* add the cfSource to the aync run loop */
1112 CFRunLoopAddSource(libusb_darwin_acfl, priv->cfSource, kCFRunLoopCommonModes);
1115 /* device opened successfully */
1116 dpriv->open_count++;
1118 usbi_dbg ("device open for access");
1123 static void darwin_close (struct libusb_device_handle *dev_handle) {
1124 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1125 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1129 if (dpriv->open_count == 0) {
1130 /* something is probably very wrong if this is the case */
1131 usbi_err (HANDLE_CTX (dev_handle), "Close called on a device that was not open!");
1135 dpriv->open_count--;
1137 /* make sure all interfaces are released */
1138 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
1139 if (dev_handle->claimed_interfaces & (1 << i))
1140 libusb_release_interface (dev_handle, i);
1142 if (0 == dpriv->open_count) {
1143 /* delete the device's async event source */
1144 if (priv->cfSource) {
1145 CFRunLoopRemoveSource (libusb_darwin_acfl, priv->cfSource, kCFRunLoopDefaultMode);
1146 CFRelease (priv->cfSource);
1147 priv->cfSource = NULL;
1148 CFRelease (libusb_darwin_acfl);
1151 if (priv->is_open) {
1152 /* close the device */
1153 kresult = (*(dpriv->device))->USBDeviceClose(dpriv->device);
1155 /* Log the fact that we had a problem closing the file, however failing a
1156 * close isn't really an error, so return success anyway */
1157 usbi_warn (HANDLE_CTX (dev_handle), "USBDeviceClose: %s", darwin_error_str(kresult));
1163 static int darwin_get_configuration(struct libusb_device_handle *dev_handle, int *config) {
1164 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1166 *config = (int) dpriv->active_config;
1171 static int darwin_set_configuration(struct libusb_device_handle *dev_handle, int config) {
1172 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1176 /* Setting configuration will invalidate the interface, so we need
1177 to reclaim it. First, dispose of existing interfaces, if any. */
1178 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
1179 if (dev_handle->claimed_interfaces & (1 << i))
1180 darwin_release_interface (dev_handle, i);
1182 kresult = (*(dpriv->device))->SetConfiguration (dpriv->device, config);
1183 if (kresult != kIOReturnSuccess)
1184 return darwin_to_libusb (kresult);
1186 /* Reclaim any interfaces. */
1187 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
1188 if (dev_handle->claimed_interfaces & (1 << i))
1189 darwin_claim_interface (dev_handle, i);
1191 dpriv->active_config = config;
1196 static int darwin_get_interface (usb_device_t **darwin_device, uint8_t ifc, io_service_t *usbInterfacep) {
1197 IOUSBFindInterfaceRequest request;
1198 kern_return_t kresult;
1199 io_iterator_t interface_iterator;
1200 UInt8 bInterfaceNumber;
1203 *usbInterfacep = IO_OBJECT_NULL;
1205 /* Setup the Interface Request */
1206 request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
1207 request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
1208 request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
1209 request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
1211 kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
1215 while ((*usbInterfacep = IOIteratorNext(interface_iterator))) {
1216 /* find the interface number */
1217 ret = get_ioregistry_value_number (*usbInterfacep, CFSTR("bInterfaceNumber"), kCFNumberSInt8Type,
1220 if (ret && bInterfaceNumber == ifc) {
1224 (void) IOObjectRelease (*usbInterfacep);
1227 /* done with the interface iterator */
1228 IOObjectRelease(interface_iterator);
1233 static int get_endpoints (struct libusb_device_handle *dev_handle, int iface) {
1234 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1236 /* current interface */
1237 struct darwin_interface *cInterface = &priv->interfaces[iface];
1239 kern_return_t kresult;
1241 u_int8_t numep, direction, number;
1242 u_int8_t dont_care1, dont_care3;
1243 u_int16_t dont_care2;
1246 usbi_dbg ("building table of endpoints.");
1248 /* retrieve the total number of endpoints on this interface */
1249 kresult = (*(cInterface->interface))->GetNumEndpoints(cInterface->interface, &numep);
1251 usbi_err (HANDLE_CTX (dev_handle), "can't get number of endpoints for interface: %s", darwin_error_str(kresult));
1252 return darwin_to_libusb (kresult);
1255 /* iterate through pipe references */
1256 for (int i = 1 ; i <= numep ; i++) {
1257 kresult = (*(cInterface->interface))->GetPipeProperties(cInterface->interface, i, &direction, &number, &dont_care1,
1258 &dont_care2, &dont_care3);
1260 if (kresult != kIOReturnSuccess) {
1261 /* probably a buggy device. try to get the endpoint address from the descriptors */
1262 struct libusb_config_descriptor *config;
1263 const struct libusb_endpoint_descriptor *endpoint_desc;
1266 kresult = (*(cInterface->interface))->GetAlternateSetting (cInterface->interface, &alt_setting);
1268 usbi_err (HANDLE_CTX (dev_handle), "can't get alternate setting for interface");
1269 return darwin_to_libusb (kresult);
1272 rc = libusb_get_active_config_descriptor (dev_handle->dev, &config);
1273 if (LIBUSB_SUCCESS != rc) {
1277 endpoint_desc = config->interface[iface].altsetting[alt_setting].endpoint + i - 1;
1279 cInterface->endpoint_addrs[i - 1] = endpoint_desc->bEndpointAddress;
1281 cInterface->endpoint_addrs[i - 1] = (((kUSBIn == direction) << kUSBRqDirnShift) | (number & LIBUSB_ENDPOINT_ADDRESS_MASK));
1284 usbi_dbg ("interface: %i pipe %i: dir: %i number: %i", iface, i, cInterface->endpoint_addrs[i - 1] >> kUSBRqDirnShift,
1285 cInterface->endpoint_addrs[i - 1] & LIBUSB_ENDPOINT_ADDRESS_MASK);
1288 cInterface->num_endpoints = numep;
1293 static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface) {
1294 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1295 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1296 io_service_t usbInterface = IO_OBJECT_NULL;
1298 IOCFPlugInInterface **plugInInterface = NULL;
1301 /* current interface */
1302 struct darwin_interface *cInterface = &priv->interfaces[iface];
1304 kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
1305 if (kresult != kIOReturnSuccess)
1306 return darwin_to_libusb (kresult);
1308 /* make sure we have an interface */
1309 if (!usbInterface && dpriv->first_config != 0) {
1310 usbi_info (HANDLE_CTX (dev_handle), "no interface found; setting configuration: %d", dpriv->first_config);
1312 /* set the configuration */
1313 kresult = darwin_set_configuration (dev_handle, dpriv->first_config);
1314 if (kresult != LIBUSB_SUCCESS) {
1315 usbi_err (HANDLE_CTX (dev_handle), "could not set configuration");
1319 kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
1321 usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult));
1322 return darwin_to_libusb (kresult);
1326 if (!usbInterface) {
1327 usbi_err (HANDLE_CTX (dev_handle), "interface not found");
1328 return LIBUSB_ERROR_NOT_FOUND;
1331 /* get an interface to the device's interface */
1332 kresult = IOCreatePlugInInterfaceForService (usbInterface, kIOUSBInterfaceUserClientTypeID,
1333 kIOCFPlugInInterfaceID, &plugInInterface, &score);
1335 /* ignore release error */
1336 (void)IOObjectRelease (usbInterface);
1339 usbi_err (HANDLE_CTX (dev_handle), "IOCreatePlugInInterfaceForService: %s", darwin_error_str(kresult));
1340 return darwin_to_libusb (kresult);
1343 if (!plugInInterface) {
1344 usbi_err (HANDLE_CTX (dev_handle), "plugin interface not found");
1345 return LIBUSB_ERROR_NOT_FOUND;
1348 /* Do the actual claim */
1349 kresult = (*plugInInterface)->QueryInterface(plugInInterface,
1350 CFUUIDGetUUIDBytes(kIOUSBInterfaceInterfaceID),
1351 (LPVOID)&cInterface->interface);
1352 /* We no longer need the intermediate plug-in */
1353 /* Use release instead of IODestroyPlugInInterface to avoid stopping IOServices associated with this device */
1354 (*plugInInterface)->Release (plugInInterface);
1355 if (kresult || !cInterface->interface) {
1356 usbi_err (HANDLE_CTX (dev_handle), "QueryInterface: %s", darwin_error_str(kresult));
1357 return darwin_to_libusb (kresult);
1360 /* claim the interface */
1361 kresult = (*(cInterface->interface))->USBInterfaceOpen(cInterface->interface);
1363 usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceOpen: %s", darwin_error_str(kresult));
1364 return darwin_to_libusb (kresult);
1367 /* update list of endpoints */
1368 kresult = get_endpoints (dev_handle, iface);
1370 /* this should not happen */
1371 darwin_release_interface (dev_handle, iface);
1372 usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table");
1376 cInterface->cfSource = NULL;
1378 /* create async event source */
1379 kresult = (*(cInterface->interface))->CreateInterfaceAsyncEventSource (cInterface->interface, &cInterface->cfSource);
1380 if (kresult != kIOReturnSuccess) {
1381 usbi_err (HANDLE_CTX (dev_handle), "could not create async event source");
1383 /* can't continue without an async event source */
1384 (void)darwin_release_interface (dev_handle, iface);
1386 return darwin_to_libusb (kresult);
1389 /* add the cfSource to the async thread's run loop */
1390 CFRunLoopAddSource(libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
1392 usbi_dbg ("interface opened");
1397 static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface) {
1398 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1401 /* current interface */
1402 struct darwin_interface *cInterface = &priv->interfaces[iface];
1404 /* Check to see if an interface is open */
1405 if (!cInterface->interface)
1406 return LIBUSB_SUCCESS;
1408 /* clean up endpoint data */
1409 cInterface->num_endpoints = 0;
1411 /* delete the interface's async event source */
1412 if (cInterface->cfSource) {
1413 CFRunLoopRemoveSource (libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
1414 CFRelease (cInterface->cfSource);
1417 kresult = (*(cInterface->interface))->USBInterfaceClose(cInterface->interface);
1419 usbi_warn (HANDLE_CTX (dev_handle), "USBInterfaceClose: %s", darwin_error_str(kresult));
1421 kresult = (*(cInterface->interface))->Release(cInterface->interface);
1422 if (kresult != kIOReturnSuccess)
1423 usbi_warn (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult));
1425 cInterface->interface = (usb_interface_t **) IO_OBJECT_NULL;
1427 return darwin_to_libusb (kresult);
1430 static int darwin_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) {
1431 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1434 /* current interface */
1435 struct darwin_interface *cInterface = &priv->interfaces[iface];
1437 if (!cInterface->interface)
1438 return LIBUSB_ERROR_NO_DEVICE;
1440 kresult = (*(cInterface->interface))->SetAlternateInterface (cInterface->interface, altsetting);
1441 if (kresult != kIOReturnSuccess)
1442 darwin_reset_device (dev_handle);
1444 /* update list of endpoints */
1445 kresult = get_endpoints (dev_handle, iface);
1447 /* this should not happen */
1448 darwin_release_interface (dev_handle, iface);
1449 usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table");
1453 return darwin_to_libusb (kresult);
1456 static int darwin_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) {
1457 /* current interface */
1458 struct darwin_interface *cInterface;
1462 /* determine the interface/endpoint to use */
1463 if (ep_to_pipeRef (dev_handle, endpoint, &pipeRef, NULL, &cInterface) != 0) {
1464 usbi_err (HANDLE_CTX (dev_handle), "endpoint not found on any open interface");
1466 return LIBUSB_ERROR_NOT_FOUND;
1469 /* newer versions of darwin support clearing additional bits on the device's endpoint */
1470 kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
1472 usbi_warn (HANDLE_CTX (dev_handle), "ClearPipeStall: %s", darwin_error_str (kresult));
1474 return darwin_to_libusb (kresult);
1477 static int darwin_reset_device(struct libusb_device_handle *dev_handle) {
1478 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1479 IOUSBDeviceDescriptor descriptor;
1480 IOUSBConfigurationDescriptorPtr cached_configuration;
1481 IOUSBConfigurationDescriptor configuration;
1482 bool reenumerate = false;
1486 kresult = (*(dpriv->device))->ResetDevice (dpriv->device);
1488 usbi_err (HANDLE_CTX (dev_handle), "ResetDevice: %s", darwin_error_str (kresult));
1489 return darwin_to_libusb (kresult);
1493 usbi_dbg ("darwin/reset_device: checking if device descriptor changed");
1495 /* ignore return code. if we can't get a descriptor it might be worthwhile re-enumerating anway */
1496 (void) darwin_request_descriptor (dpriv->device, kUSBDeviceDesc, 0, &descriptor, sizeof (descriptor));
1498 /* check if the device descriptor has changed */
1499 if (0 != memcmp (&dpriv->dev_descriptor, &descriptor, sizeof (descriptor))) {
1504 /* check if any configuration descriptor has changed */
1505 for (i = 0 ; i < descriptor.bNumConfigurations ; ++i) {
1506 usbi_dbg ("darwin/reset_device: checking if configuration descriptor %d changed", i);
1508 (void) darwin_request_descriptor (dpriv->device, kUSBConfDesc, i, &configuration, sizeof (configuration));
1509 (*(dpriv->device))->GetConfigurationDescriptorPtr (dpriv->device, i, &cached_configuration);
1511 if (!cached_configuration || 0 != memcmp (cached_configuration, &configuration, sizeof (configuration))) {
1519 usbi_dbg ("darwin/reset_device: device requires reenumeration");
1520 (void) (*(dpriv->device))->USBDeviceReEnumerate (dpriv->device, 0);
1521 return LIBUSB_ERROR_NOT_FOUND;
1524 usbi_dbg ("darwin/reset_device: device reset complete");
1526 return LIBUSB_SUCCESS;
1529 static int darwin_kernel_driver_active(struct libusb_device_handle *dev_handle, int interface) {
1530 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev);
1531 io_service_t usbInterface;
1535 kresult = darwin_get_interface (dpriv->device, interface, &usbInterface);
1537 usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult));
1539 return darwin_to_libusb (kresult);
1542 driver = IORegistryEntryCreateCFProperty (usbInterface, kIOBundleIdentifierKey, kCFAllocatorDefault, 0);
1543 IOObjectRelease (usbInterface);
1555 /* attaching/detaching kernel drivers is not currently supported (maybe in the future?) */
1556 static int darwin_attach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) {
1559 return LIBUSB_ERROR_NOT_SUPPORTED;
1562 static int darwin_detach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) {
1565 return LIBUSB_ERROR_NOT_SUPPORTED;
1568 static void darwin_destroy_device(struct libusb_device *dev) {
1569 struct darwin_device_priv *dpriv = (struct darwin_device_priv *) dev->os_priv;
1572 /* need to hold the lock in case this is the last reference to the device */
1573 usbi_mutex_lock(&darwin_cached_devices_lock);
1574 darwin_deref_cached_device (dpriv->dev);
1576 usbi_mutex_unlock(&darwin_cached_devices_lock);
1580 static int submit_bulk_transfer(struct usbi_transfer *itransfer) {
1581 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1584 uint8_t transferType;
1585 /* None of the values below are used in libusbx for bulk transfers */
1586 uint8_t direction, number, interval, pipeRef;
1587 uint16_t maxPacketSize;
1589 struct darwin_interface *cInterface;
1591 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
1592 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1594 return LIBUSB_ERROR_NOT_FOUND;
1597 ret = (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
1598 &transferType, &maxPacketSize, &interval);
1601 usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out",
1602 darwin_error_str(ret), ret);
1603 return darwin_to_libusb (ret);
1606 if (0 != (transfer->length % maxPacketSize)) {
1607 /* do not need a zero packet */
1608 transfer->flags &= ~LIBUSB_TRANSFER_ADD_ZERO_PACKET;
1611 /* submit the request */
1612 /* timeouts are unavailable on interrupt endpoints */
1613 if (transferType == kUSBInterrupt) {
1614 if (IS_XFERIN(transfer))
1615 ret = (*(cInterface->interface))->ReadPipeAsync(cInterface->interface, pipeRef, transfer->buffer,
1616 transfer->length, darwin_async_io_callback, itransfer);
1618 ret = (*(cInterface->interface))->WritePipeAsync(cInterface->interface, pipeRef, transfer->buffer,
1619 transfer->length, darwin_async_io_callback, itransfer);
1621 itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1623 if (IS_XFERIN(transfer))
1624 ret = (*(cInterface->interface))->ReadPipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
1625 transfer->length, transfer->timeout, transfer->timeout,
1626 darwin_async_io_callback, (void *)itransfer);
1628 ret = (*(cInterface->interface))->WritePipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
1629 transfer->length, transfer->timeout, transfer->timeout,
1630 darwin_async_io_callback, (void *)itransfer);
1634 usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out",
1635 darwin_error_str(ret), ret);
1637 return darwin_to_libusb (ret);
1640 #if InterfaceVersion >= 550
1641 static int submit_stream_transfer(struct usbi_transfer *itransfer) {
1642 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1643 struct darwin_interface *cInterface;
1647 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
1648 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1650 return LIBUSB_ERROR_NOT_FOUND;
1653 itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1655 if (IS_XFERIN(transfer))
1656 ret = (*(cInterface->interface))->ReadStreamsPipeAsyncTO(cInterface->interface, pipeRef, itransfer->stream_id,
1657 transfer->buffer, transfer->length, transfer->timeout,
1658 transfer->timeout, darwin_async_io_callback, (void *)itransfer);
1660 ret = (*(cInterface->interface))->WriteStreamsPipeAsyncTO(cInterface->interface, pipeRef, itransfer->stream_id,
1661 transfer->buffer, transfer->length, transfer->timeout,
1662 transfer->timeout, darwin_async_io_callback, (void *)itransfer);
1665 usbi_err (TRANSFER_CTX (transfer), "bulk stream transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out",
1666 darwin_error_str(ret), ret);
1668 return darwin_to_libusb (ret);
1672 static int submit_iso_transfer(struct usbi_transfer *itransfer) {
1673 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1674 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1677 uint8_t direction, number, interval, pipeRef, transferType;
1678 uint16_t maxPacketSize;
1680 AbsoluteTime atTime;
1683 struct darwin_interface *cInterface;
1685 /* construct an array of IOUSBIsocFrames, reuse the old one if possible */
1686 if (tpriv->isoc_framelist && tpriv->num_iso_packets != transfer->num_iso_packets) {
1687 free(tpriv->isoc_framelist);
1688 tpriv->isoc_framelist = NULL;
1691 if (!tpriv->isoc_framelist) {
1692 tpriv->num_iso_packets = transfer->num_iso_packets;
1693 tpriv->isoc_framelist = (IOUSBIsocFrame*) calloc (transfer->num_iso_packets, sizeof(IOUSBIsocFrame));
1694 if (!tpriv->isoc_framelist)
1695 return LIBUSB_ERROR_NO_MEM;
1698 /* copy the frame list from the libusb descriptor (the structures differ only is member order) */
1699 for (i = 0 ; i < transfer->num_iso_packets ; i++)
1700 tpriv->isoc_framelist[i].frReqCount = transfer->iso_packet_desc[i].length;
1702 /* determine the interface/endpoint to use */
1703 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
1704 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1706 return LIBUSB_ERROR_NOT_FOUND;
1709 /* determine the properties of this endpoint and the speed of the device */
1710 (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
1711 &transferType, &maxPacketSize, &interval);
1713 /* Last but not least we need the bus frame number */
1714 kresult = (*(cInterface->interface))->GetBusFrameNumber(cInterface->interface, &frame, &atTime);
1716 usbi_err (TRANSFER_CTX (transfer), "failed to get bus frame number: %d", kresult);
1717 free(tpriv->isoc_framelist);
1718 tpriv->isoc_framelist = NULL;
1720 return darwin_to_libusb (kresult);
1723 (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
1724 &transferType, &maxPacketSize, &interval);
1726 /* schedule for a frame a little in the future */
1729 if (cInterface->frames[transfer->endpoint] && frame < cInterface->frames[transfer->endpoint])
1730 frame = cInterface->frames[transfer->endpoint];
1732 /* submit the request */
1733 if (IS_XFERIN(transfer))
1734 kresult = (*(cInterface->interface))->ReadIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
1735 transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
1738 kresult = (*(cInterface->interface))->WriteIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
1739 transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
1742 if (LIBUSB_SPEED_FULL == transfer->dev_handle->dev->speed)
1744 cInterface->frames[transfer->endpoint] = frame + transfer->num_iso_packets * (1 << (interval - 1));
1746 /* High/super speed */
1747 cInterface->frames[transfer->endpoint] = frame + transfer->num_iso_packets * (1 << (interval - 1)) / 8;
1749 if (kresult != kIOReturnSuccess) {
1750 usbi_err (TRANSFER_CTX (transfer), "isochronous transfer failed (dir: %s): %s", IS_XFERIN(transfer) ? "In" : "Out",
1751 darwin_error_str(kresult));
1752 free (tpriv->isoc_framelist);
1753 tpriv->isoc_framelist = NULL;
1756 return darwin_to_libusb (kresult);
1759 static int submit_control_transfer(struct usbi_transfer *itransfer) {
1760 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1761 struct libusb_control_setup *setup = (struct libusb_control_setup *) transfer->buffer;
1762 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev);
1763 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1767 memset(&tpriv->req, 0, sizeof(tpriv->req));
1769 /* IOUSBDeviceInterface expects the request in cpu endianness */
1770 tpriv->req.bmRequestType = setup->bmRequestType;
1771 tpriv->req.bRequest = setup->bRequest;
1772 /* these values should be in bus order from libusb_fill_control_setup */
1773 tpriv->req.wValue = OSSwapLittleToHostInt16 (setup->wValue);
1774 tpriv->req.wIndex = OSSwapLittleToHostInt16 (setup->wIndex);
1775 tpriv->req.wLength = OSSwapLittleToHostInt16 (setup->wLength);
1776 /* data is stored after the libusb control block */
1777 tpriv->req.pData = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE;
1778 tpriv->req.completionTimeout = transfer->timeout;
1779 tpriv->req.noDataTimeout = transfer->timeout;
1781 itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1783 /* all transfers in libusb-1.0 are async */
1785 if (transfer->endpoint) {
1786 struct darwin_interface *cInterface;
1789 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) {
1790 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1792 return LIBUSB_ERROR_NOT_FOUND;
1795 kresult = (*(cInterface->interface))->ControlRequestAsyncTO (cInterface->interface, pipeRef, &(tpriv->req), darwin_async_io_callback, itransfer);
1797 /* control request on endpoint 0 */
1798 kresult = (*(dpriv->device))->DeviceRequestAsyncTO(dpriv->device, &(tpriv->req), darwin_async_io_callback, itransfer);
1800 if (kresult != kIOReturnSuccess)
1801 usbi_err (TRANSFER_CTX (transfer), "control request failed: %s", darwin_error_str(kresult));
1803 return darwin_to_libusb (kresult);
1806 static int darwin_submit_transfer(struct usbi_transfer *itransfer) {
1807 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1809 switch (transfer->type) {
1810 case LIBUSB_TRANSFER_TYPE_CONTROL:
1811 return submit_control_transfer(itransfer);
1812 case LIBUSB_TRANSFER_TYPE_BULK:
1813 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
1814 return submit_bulk_transfer(itransfer);
1815 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
1816 return submit_iso_transfer(itransfer);
1817 case LIBUSB_TRANSFER_TYPE_BULK_STREAM:
1818 #if InterfaceVersion >= 550
1819 return submit_stream_transfer(itransfer);
1821 usbi_err (TRANSFER_CTX(transfer), "IOUSBFamily version does not support bulk stream transfers");
1822 return LIBUSB_ERROR_NOT_SUPPORTED;
1825 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1826 return LIBUSB_ERROR_INVALID_PARAM;
1830 static int cancel_control_transfer(struct usbi_transfer *itransfer) {
1831 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1832 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev);
1835 usbi_warn (ITRANSFER_CTX (itransfer), "aborting all transactions control pipe");
1838 return LIBUSB_ERROR_NO_DEVICE;
1840 kresult = (*(dpriv->device))->USBDeviceAbortPipeZero (dpriv->device);
1842 return darwin_to_libusb (kresult);
1845 static int darwin_abort_transfers (struct usbi_transfer *itransfer) {
1846 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1847 struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev);
1848 struct darwin_interface *cInterface;
1849 uint8_t pipeRef, iface;
1852 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface, &cInterface) != 0) {
1853 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1855 return LIBUSB_ERROR_NOT_FOUND;
1859 return LIBUSB_ERROR_NO_DEVICE;
1861 usbi_warn (ITRANSFER_CTX (itransfer), "aborting all transactions on interface %d pipe %d", iface, pipeRef);
1863 /* abort transactions */
1864 #if InterfaceVersion >= 550
1865 if (LIBUSB_TRANSFER_TYPE_BULK_STREAM == transfer->type)
1866 (*(cInterface->interface))->AbortStreamsPipe (cInterface->interface, pipeRef, itransfer->stream_id);
1869 (*(cInterface->interface))->AbortPipe (cInterface->interface, pipeRef);
1871 usbi_dbg ("calling clear pipe stall to clear the data toggle bit");
1873 /* newer versions of darwin support clearing additional bits on the device's endpoint */
1874 kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
1876 return darwin_to_libusb (kresult);
1879 static int darwin_cancel_transfer(struct usbi_transfer *itransfer) {
1880 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1882 switch (transfer->type) {
1883 case LIBUSB_TRANSFER_TYPE_CONTROL:
1884 return cancel_control_transfer(itransfer);
1885 case LIBUSB_TRANSFER_TYPE_BULK:
1886 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
1887 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
1888 return darwin_abort_transfers (itransfer);
1890 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1891 return LIBUSB_ERROR_INVALID_PARAM;
1895 static void darwin_clear_transfer_priv (struct usbi_transfer *itransfer) {
1896 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1897 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1899 if (transfer->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS && tpriv->isoc_framelist) {
1900 free (tpriv->isoc_framelist);
1901 tpriv->isoc_framelist = NULL;
1905 static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0) {
1906 struct usbi_transfer *itransfer = (struct usbi_transfer *)refcon;
1907 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1908 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1910 usbi_dbg ("an async io operation has completed");
1912 /* if requested write a zero packet */
1913 if (kIOReturnSuccess == result && IS_XFEROUT(transfer) && transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) {
1914 struct darwin_interface *cInterface;
1917 (void) ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface);
1919 (*(cInterface->interface))->WritePipe (cInterface->interface, pipeRef, transfer->buffer, 0);
1922 tpriv->result = result;
1923 tpriv->size = (UInt32) (uintptr_t) arg0;
1925 /* signal the core that this transfer is complete */
1926 usbi_signal_transfer_completion(itransfer);
1929 static int darwin_transfer_status (struct usbi_transfer *itransfer, kern_return_t result) {
1930 if (itransfer->timeout_flags & USBI_TRANSFER_TIMED_OUT)
1931 result = kIOUSBTransactionTimeout;
1934 case kIOReturnUnderrun:
1935 case kIOReturnSuccess:
1936 return LIBUSB_TRANSFER_COMPLETED;
1937 case kIOReturnAborted:
1938 return LIBUSB_TRANSFER_CANCELLED;
1939 case kIOUSBPipeStalled:
1940 usbi_dbg ("transfer error: pipe is stalled");
1941 return LIBUSB_TRANSFER_STALL;
1942 case kIOReturnOverrun:
1943 usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: data overrun");
1944 return LIBUSB_TRANSFER_OVERFLOW;
1945 case kIOUSBTransactionTimeout:
1946 usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: timed out");
1947 itransfer->timeout_flags |= USBI_TRANSFER_TIMED_OUT;
1948 return LIBUSB_TRANSFER_TIMED_OUT;
1950 usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: %s (value = 0x%08x)", darwin_error_str (result), result);
1951 return LIBUSB_TRANSFER_ERROR;
1955 static int darwin_handle_transfer_completion (struct usbi_transfer *itransfer) {
1956 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1957 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1958 int isIsoc = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS == transfer->type;
1959 int isBulk = LIBUSB_TRANSFER_TYPE_BULK == transfer->type;
1960 int isControl = LIBUSB_TRANSFER_TYPE_CONTROL == transfer->type;
1961 int isInterrupt = LIBUSB_TRANSFER_TYPE_INTERRUPT == transfer->type;
1964 if (!isIsoc && !isBulk && !isControl && !isInterrupt) {
1965 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1966 return LIBUSB_ERROR_INVALID_PARAM;
1969 usbi_dbg ("handling %s completion with kernel status %d",
1970 isControl ? "control" : isBulk ? "bulk" : isIsoc ? "isoc" : "interrupt", tpriv->result);
1972 if (kIOReturnSuccess == tpriv->result || kIOReturnUnderrun == tpriv->result) {
1973 if (isIsoc && tpriv->isoc_framelist) {
1974 /* copy isochronous results back */
1976 for (i = 0; i < transfer->num_iso_packets ; i++) {
1977 struct libusb_iso_packet_descriptor *lib_desc = &transfer->iso_packet_desc[i];
1978 lib_desc->status = darwin_to_libusb (tpriv->isoc_framelist[i].frStatus);
1979 lib_desc->actual_length = tpriv->isoc_framelist[i].frActCount;
1982 itransfer->transferred += tpriv->size;
1985 /* it is ok to handle cancelled transfers without calling usbi_handle_transfer_cancellation (we catch timeout transfers) */
1986 return usbi_handle_transfer_completion (itransfer, darwin_transfer_status (itransfer, tpriv->result));
1989 static int darwin_clock_gettime(int clk_id, struct timespec *tp) {
1990 #if !OSX_USE_CLOCK_GETTIME
1991 mach_timespec_t sys_time;
1992 clock_serv_t clock_ref;
1995 case USBI_CLOCK_REALTIME:
1996 /* CLOCK_REALTIME represents time since the epoch */
1997 clock_ref = clock_realtime;
1999 case USBI_CLOCK_MONOTONIC:
2000 /* use system boot time as reference for the monotonic clock */
2001 clock_ref = clock_monotonic;
2004 return LIBUSB_ERROR_INVALID_PARAM;
2007 clock_get_time (clock_ref, &sys_time);
2009 tp->tv_sec = sys_time.tv_sec;
2010 tp->tv_nsec = sys_time.tv_nsec;
2015 case USBI_CLOCK_MONOTONIC:
2016 return clock_gettime(CLOCK_MONOTONIC, tp);
2017 case USBI_CLOCK_REALTIME:
2018 return clock_gettime(CLOCK_REALTIME, tp);
2020 return LIBUSB_ERROR_INVALID_PARAM;
2025 #if InterfaceVersion >= 550
2026 static int darwin_alloc_streams (struct libusb_device_handle *dev_handle, uint32_t num_streams, unsigned char *endpoints,
2027 int num_endpoints) {
2028 struct darwin_interface *cInterface;
2029 UInt32 supportsStreams;
2033 /* find the mimimum number of supported streams on the endpoint list */
2034 for (i = 0 ; i < num_endpoints ; ++i) {
2035 if (0 != (rc = ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface))) {
2039 (*(cInterface->interface))->SupportsStreams (cInterface->interface, pipeRef, &supportsStreams);
2040 if (num_streams > supportsStreams)
2041 num_streams = supportsStreams;
2044 /* it is an error if any endpoint in endpoints does not support streams */
2045 if (0 == num_streams)
2046 return LIBUSB_ERROR_INVALID_PARAM;
2048 /* create the streams */
2049 for (i = 0 ; i < num_endpoints ; ++i) {
2050 (void) ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface);
2052 rc = (*(cInterface->interface))->CreateStreams (cInterface->interface, pipeRef, num_streams);
2053 if (kIOReturnSuccess != rc)
2054 return darwin_to_libusb(rc);
2060 static int darwin_free_streams (struct libusb_device_handle *dev_handle, unsigned char *endpoints, int num_endpoints) {
2061 struct darwin_interface *cInterface;
2062 UInt32 supportsStreams;
2066 for (int i = 0 ; i < num_endpoints ; ++i) {
2067 if (0 != (rc = ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface)))
2070 (*(cInterface->interface))->SupportsStreams (cInterface->interface, pipeRef, &supportsStreams);
2071 if (0 == supportsStreams)
2072 return LIBUSB_ERROR_INVALID_PARAM;
2074 rc = (*(cInterface->interface))->CreateStreams (cInterface->interface, pipeRef, 0);
2075 if (kIOReturnSuccess != rc)
2076 return darwin_to_libusb(rc);
2079 return LIBUSB_SUCCESS;
2083 const struct usbi_os_backend usbi_backend = {
2086 .init = darwin_init,
2087 .exit = darwin_exit,
2088 .get_device_list = NULL, /* not needed */
2089 .get_device_descriptor = darwin_get_device_descriptor,
2090 .get_active_config_descriptor = darwin_get_active_config_descriptor,
2091 .get_config_descriptor = darwin_get_config_descriptor,
2092 .hotplug_poll = darwin_hotplug_poll,
2094 .open = darwin_open,
2095 .close = darwin_close,
2096 .get_configuration = darwin_get_configuration,
2097 .set_configuration = darwin_set_configuration,
2098 .claim_interface = darwin_claim_interface,
2099 .release_interface = darwin_release_interface,
2101 .set_interface_altsetting = darwin_set_interface_altsetting,
2102 .clear_halt = darwin_clear_halt,
2103 .reset_device = darwin_reset_device,
2105 #if InterfaceVersion >= 550
2106 .alloc_streams = darwin_alloc_streams,
2107 .free_streams = darwin_free_streams,
2110 .kernel_driver_active = darwin_kernel_driver_active,
2111 .detach_kernel_driver = darwin_detach_kernel_driver,
2112 .attach_kernel_driver = darwin_attach_kernel_driver,
2114 .destroy_device = darwin_destroy_device,
2116 .submit_transfer = darwin_submit_transfer,
2117 .cancel_transfer = darwin_cancel_transfer,
2118 .clear_transfer_priv = darwin_clear_transfer_priv,
2120 .handle_transfer_completion = darwin_handle_transfer_completion,
2122 .clock_gettime = darwin_clock_gettime,
2124 .device_priv_size = sizeof(struct darwin_device_priv),
2125 .device_handle_priv_size = sizeof(struct darwin_device_handle_priv),
2126 .transfer_priv_size = sizeof(struct darwin_transfer_priv),