2 * darwin backend for libusb 1.0
3 * Copyright (C) 2008-2011 Nathan Hjelm <hjelmn@users.sourceforge.net>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #include <sys/ioctl.h>
31 #include <sys/types.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
41 #include <objc/objc-auto.h>
44 #include <IOKit/IOCFBundle.h>
45 #include <IOKit/usb/IOUSBLib.h>
46 #include <IOKit/IOCFPlugIn.h>
48 #include "darwin_usb.h"
50 /* async event thread */
51 static pthread_mutex_t libusb_darwin_at_mutex;
52 static pthread_cond_t libusb_darwin_at_cond;
54 static CFRunLoopRef libusb_darwin_acfl = NULL; /* async cf loop */
55 static int initCount = 0;
57 /* async event thread */
58 static pthread_t libusb_darwin_at;
60 static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian);
61 static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface);
62 static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface);
63 static int darwin_reset_device(struct libusb_device_handle *dev_handle);
64 static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0);
66 static const char *darwin_error_str (int result) {
68 case kIOReturnSuccess:
70 case kIOReturnNotOpen:
71 return "device not opened for exclusive access";
72 case kIOReturnNoDevice:
73 return "no connection to an IOService";
74 case kIOUSBNoAsyncPortErr:
75 return "no async port has been opened for interface";
76 case kIOReturnExclusiveAccess:
77 return "another process has device opened for exclusive access";
78 case kIOUSBPipeStalled:
79 return "pipe is stalled";
81 return "could not establish a connection to the Darwin kernel";
82 case kIOUSBTransactionTimeout:
83 return "transaction timed out";
84 case kIOReturnBadArgument:
85 return "invalid argument";
86 case kIOReturnAborted:
87 return "transaction aborted";
88 case kIOReturnNotResponding:
89 return "device not responding";
90 case kIOReturnOverrun:
91 return "data overrun";
92 case kIOReturnCannotWire:
93 return "physical memory can not be wired down";
95 return "unknown error";
99 static int darwin_to_libusb (int result) {
101 case kIOReturnUnderrun:
102 case kIOReturnSuccess:
103 return LIBUSB_SUCCESS;
104 case kIOReturnNotOpen:
105 case kIOReturnNoDevice:
106 return LIBUSB_ERROR_NO_DEVICE;
107 case kIOReturnExclusiveAccess:
108 return LIBUSB_ERROR_ACCESS;
109 case kIOUSBPipeStalled:
110 return LIBUSB_ERROR_PIPE;
111 case kIOReturnBadArgument:
112 return LIBUSB_ERROR_INVALID_PARAM;
113 case kIOUSBTransactionTimeout:
114 return LIBUSB_ERROR_TIMEOUT;
115 case kIOReturnNotResponding:
116 case kIOReturnAborted:
118 case kIOUSBNoAsyncPortErr:
120 return LIBUSB_ERROR_OTHER;
125 static int ep_to_pipeRef(struct libusb_device_handle *dev_handle, uint8_t ep, uint8_t *pipep, uint8_t *ifcp) {
126 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
128 /* current interface */
129 struct darwin_interface *cInterface;
133 usbi_info (HANDLE_CTX(dev_handle), "converting ep address 0x%02x to pipeRef and interface", ep);
135 for (iface = 0 ; iface < USB_MAXINTERFACES ; iface++) {
136 cInterface = &priv->interfaces[iface];
138 if (dev_handle->claimed_interfaces & (1 << iface)) {
139 for (i = 0 ; i < cInterface->num_endpoints ; i++) {
140 if (cInterface->endpoint_addrs[i] == ep) {
143 usbi_info (HANDLE_CTX(dev_handle), "pipe %d on interface %d matches", *pipep, *ifcp);
150 /* No pipe found with the correct endpoint address */
151 usbi_warn (HANDLE_CTX(dev_handle), "no pipeRef found with endpoint address 0x%02x.", ep);
156 static int usb_setup_device_iterator (io_iterator_t *deviceIterator, long location) {
157 CFMutableDictionaryRef matchingDict = IOServiceMatching(kIOUSBDeviceClassName);
160 return kIOReturnError;
163 CFMutableDictionaryRef propertyMatchDict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
164 &kCFTypeDictionaryKeyCallBacks,
165 &kCFTypeDictionaryValueCallBacks);
167 if (propertyMatchDict) {
168 CFTypeRef locationCF = CFNumberCreate (NULL, kCFNumberLongType, &location);
170 CFDictionarySetValue (propertyMatchDict, CFSTR(kUSBDevicePropertyLocationID), locationCF);
171 /* release our reference to the CFNumber (CFDictionarySetValue retains it) */
172 CFRelease (locationCF);
174 CFDictionarySetValue (matchingDict, CFSTR(kIOPropertyMatchKey), propertyMatchDict);
175 /* release out reference to the CFMutableDictionaryRef (CFDictionarySetValue retains it) */
176 CFRelease (propertyMatchDict);
178 /* else we can still proceed as long as the caller accounts for the possibility of other devices in the iterator */
181 return IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, deviceIterator);
184 static usb_device_t **usb_get_next_device (io_iterator_t deviceIterator, UInt32 *locationp) {
185 io_cf_plugin_ref_t *plugInInterface = NULL;
186 usb_device_t **device;
187 io_service_t usbDevice;
191 if (!IOIteratorIsValid (deviceIterator))
195 while ((usbDevice = IOIteratorNext(deviceIterator))) {
196 result = IOCreatePlugInInterfaceForService(usbDevice, kIOUSBDeviceUserClientTypeID,
197 kIOCFPlugInInterfaceID, &plugInInterface,
200 /* we are done with the usb_device_t */
201 (void)IOObjectRelease(usbDevice);
202 if (kIOReturnSuccess == result && plugInInterface)
205 usbi_dbg ("libusb/darwin.c usb_get_next_device: could not set up plugin for service: %s\n", darwin_error_str (result));
211 (void)(*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(DeviceInterfaceID),
214 (*plugInInterface)->Stop(plugInInterface);
215 IODestroyPlugInInterface (plugInInterface);
217 /* get the location from the device */
219 (*(device))->GetLocationID(device, locationp);
224 static kern_return_t darwin_get_device (uint32_t dev_location, usb_device_t ***darwin_device) {
225 kern_return_t kresult;
227 io_iterator_t deviceIterator;
229 kresult = usb_setup_device_iterator (&deviceIterator, dev_location);
233 /* This port of libusb uses locations to keep track of devices. */
234 while ((*darwin_device = usb_get_next_device (deviceIterator, &location)) != NULL) {
235 if (location == dev_location)
238 (**darwin_device)->Release(*darwin_device);
241 IOObjectRelease (deviceIterator);
243 if (!(*darwin_device))
244 return kIOReturnNoDevice;
246 return kIOReturnSuccess;
251 static void darwin_devices_detached (void *ptr, io_iterator_t rem_devices) {
252 struct libusb_context *ctx = (struct libusb_context *)ptr;
253 struct libusb_device_handle *handle;
254 struct darwin_device_priv *dpriv;
255 struct darwin_device_handle_priv *priv;
260 CFTypeRef locationCF;
263 usbi_info (ctx, "a device has been detached");
265 while ((device = IOIteratorNext (rem_devices)) != 0) {
266 /* get the location from the i/o registry */
267 locationCF = IORegistryEntryCreateCFProperty (device, CFSTR(kUSBDevicePropertyLocationID), kCFAllocatorDefault, 0);
269 IOObjectRelease (device);
274 locationValid = CFGetTypeID(locationCF) == CFNumberGetTypeID() &&
275 CFNumberGetValue(locationCF, kCFNumberLongType, &location);
277 CFRelease (locationCF);
282 usbi_mutex_lock(&ctx->open_devs_lock);
283 list_for_each_entry(handle, &ctx->open_devs, list, struct libusb_device_handle) {
284 dpriv = (struct darwin_device_priv *)handle->dev->os_priv;
286 /* the device may have been opened several times. write to each handle's event descriptor */
287 if (dpriv->location == location && handle->os_priv) {
288 priv = (struct darwin_device_handle_priv *)handle->os_priv;
290 message = MESSAGE_DEVICE_GONE;
291 write (priv->fds[1], &message, sizeof (message));
295 usbi_mutex_unlock(&ctx->open_devs_lock);
299 static void darwin_clear_iterator (io_iterator_t iter) {
302 while ((device = IOIteratorNext (iter)) != 0)
303 IOObjectRelease (device);
306 static void *event_thread_main (void *arg0) {
308 struct libusb_context *ctx = (struct libusb_context *)arg0;
309 CFRunLoopRef runloop;
311 /* Tell the Objective-C garbage collector about this thread.
312 This is required because, unlike NSThreads, pthreads are
313 not automatically registered. Although we don't use
314 Objective-C, we use CoreFoundation, which does. */
315 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060
316 objc_registerThreadWithCollector();
319 /* hotplug (device removal) source */
320 CFRunLoopSourceRef libusb_notification_cfsource;
321 io_notification_port_t libusb_notification_port;
322 io_iterator_t libusb_rem_device_iterator;
324 usbi_info (ctx, "creating hotplug event source");
326 runloop = CFRunLoopGetCurrent ();
329 /* add the notification port to the run loop */
330 libusb_notification_port = IONotificationPortCreate (kIOMasterPortDefault);
331 libusb_notification_cfsource = IONotificationPortGetRunLoopSource (libusb_notification_port);
332 CFRunLoopAddSource(CFRunLoopGetCurrent (), libusb_notification_cfsource, kCFRunLoopDefaultMode);
334 /* create notifications for removed devices */
335 kresult = IOServiceAddMatchingNotification (libusb_notification_port, kIOTerminatedNotification,
336 IOServiceMatching(kIOUSBDeviceClassName),
337 (IOServiceMatchingCallback)darwin_devices_detached,
338 (void *)ctx, &libusb_rem_device_iterator);
340 if (kresult != kIOReturnSuccess) {
341 usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult));
347 darwin_clear_iterator (libusb_rem_device_iterator);
349 usbi_info (ctx, "thread ready to receive events");
351 /* let the main thread know about the async runloop */
352 libusb_darwin_acfl = CFRunLoopGetCurrent ();
354 /* signal the main thread */
355 pthread_mutex_lock (&libusb_darwin_at_mutex);
356 pthread_cond_signal (&libusb_darwin_at_cond);
357 pthread_mutex_unlock (&libusb_darwin_at_mutex);
359 /* run the runloop */
362 usbi_info (ctx, "thread exiting");
364 /* delete notification port */
365 IONotificationPortDestroy (libusb_notification_port);
366 IOObjectRelease (libusb_rem_device_iterator);
370 libusb_darwin_acfl = NULL;
375 static int darwin_init(struct libusb_context *ctx) {
376 if (!(initCount++)) {
377 pthread_mutex_init (&libusb_darwin_at_mutex, NULL);
378 pthread_cond_init (&libusb_darwin_at_cond, NULL);
380 pthread_create (&libusb_darwin_at, NULL, event_thread_main, (void *)ctx);
382 pthread_mutex_lock (&libusb_darwin_at_mutex);
383 while (!libusb_darwin_acfl)
384 pthread_cond_wait (&libusb_darwin_at_cond, &libusb_darwin_at_mutex);
385 pthread_mutex_unlock (&libusb_darwin_at_mutex);
391 static void darwin_exit (void) {
392 if (!(--initCount)) {
394 /* stop the async runloop */
395 CFRunLoopStop (libusb_darwin_acfl);
396 pthread_join (libusb_darwin_at, NULL);
400 static int darwin_get_device_descriptor(struct libusb_device *dev, unsigned char *buffer, int *host_endian) {
401 struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
403 /* return cached copy */
404 memmove (buffer, &(priv->dev_descriptor), DEVICE_DESC_LENGTH);
411 static int get_configuration_index (struct libusb_device *dev, int config_value) {
412 struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
414 IOUSBConfigurationDescriptorPtr desc;
417 /* is there a simpler way to determine the index? */
418 kresult = (*(priv->device))->GetNumberOfConfigurations (priv->device, &numConfig);
419 if (kresult != kIOReturnSuccess)
420 return darwin_to_libusb (kresult);
422 for (i = 0 ; i < numConfig ; i++) {
423 (*(priv->device))->GetConfigurationDescriptorPtr (priv->device, i, &desc);
425 if (desc->bConfigurationValue == config_value)
429 /* configuration not found */
430 return LIBUSB_ERROR_OTHER;
433 static int darwin_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian) {
434 struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
437 if (0 == priv->active_config)
438 return LIBUSB_ERROR_INVALID_PARAM;
440 config_index = get_configuration_index (dev, priv->active_config);
441 if (config_index < 0)
444 return darwin_get_config_descriptor (dev, config_index, buffer, len, host_endian);
447 static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) {
448 struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
449 IOUSBConfigurationDescriptorPtr desc;
451 usb_device_t **device = NULL;
454 return LIBUSB_ERROR_OTHER;
457 kresult = darwin_get_device (priv->location, &device);
458 if (kresult || !device) {
459 usbi_err (DEVICE_CTX (dev), "could not find device: %s", darwin_error_str (kresult));
461 return darwin_to_libusb (kresult);
464 /* don't have to open the device to get a config descriptor */
466 device = priv->device;
468 kresult = (*device)->GetConfigurationDescriptorPtr (device, config_index, &desc);
469 if (kresult == kIOReturnSuccess) {
470 /* copy descriptor */
471 if (libusb_le16_to_cpu(desc->wTotalLength) < len)
472 len = libusb_le16_to_cpu(desc->wTotalLength);
474 memmove (buffer, desc, len);
476 /* GetConfigurationDescriptorPtr returns the descriptor in USB bus order */
481 (*device)->Release (device);
483 return darwin_to_libusb (kresult);
486 /* check whether the os has configured the device */
487 static int darwin_check_configuration (struct libusb_context *ctx, struct libusb_device *dev, usb_device_t **darwin_device) {
488 struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
490 IOUSBConfigurationDescriptorPtr configDesc;
491 IOUSBFindInterfaceRequest request;
492 kern_return_t kresult;
493 io_iterator_t interface_iterator;
494 io_service_t firstInterface;
496 if (priv->dev_descriptor.bNumConfigurations < 1) {
497 usbi_err (ctx, "device has no configurations");
498 return LIBUSB_ERROR_OTHER; /* no configurations at this speed so we can't use it */
501 /* find the first configuration */
502 kresult = (*darwin_device)->GetConfigurationDescriptorPtr (darwin_device, 0, &configDesc);
503 priv->first_config = (kIOReturnSuccess == kresult) ? configDesc->bConfigurationValue : 1;
505 /* check if the device is already configured. there is probably a better way than iterating over the
506 to accomplish this (the trick is we need to avoid a call to GetConfigurations since buggy devices
507 might lock up on the device request) */
509 /* Setup the Interface Request */
510 request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
511 request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
512 request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
513 request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
515 kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
517 return darwin_to_libusb (kresult);
520 firstInterface = IOIteratorNext(interface_iterator);
522 /* done with the interface iterator */
523 IOObjectRelease(interface_iterator);
525 if (firstInterface) {
526 IOObjectRelease (firstInterface);
528 /* device is configured */
529 if (priv->dev_descriptor.bNumConfigurations == 1)
530 /* to avoid problems with some devices get the configurations value from the configuration descriptor */
531 priv->active_config = priv->first_config;
533 /* devices with more than one configuration should work with GetConfiguration */
534 (*darwin_device)->GetConfiguration (darwin_device, &priv->active_config);
537 priv->active_config = 0;
539 usbi_info (ctx, "active config: %u, first config: %u", priv->active_config, priv->first_config);
544 static int darwin_cache_device_descriptor (struct libusb_context *ctx, struct libusb_device *dev, usb_device_t **device) {
545 struct darwin_device_priv *priv;
546 int retries = 5, delay = 30000;
547 int unsuspended = 0, try_unsuspend = 1, try_reconfigure = 1;
552 UInt16 idProduct, idVendor;
554 (*device)->GetDeviceClass (device, &bDeviceClass);
555 (*device)->GetDeviceProduct (device, &idProduct);
556 (*device)->GetDeviceVendor (device, &idVendor);
558 priv = (struct darwin_device_priv *)dev->os_priv;
560 /* try to open the device (we can usually continue even if this fails) */
561 is_open = ((*device)->USBDeviceOpenSeize(device) == kIOReturnSuccess);
563 /**** retrieve device descriptor ****/
565 /* Set up request for device descriptor */
566 memset (&(priv->dev_descriptor), 0, sizeof(IOUSBDeviceDescriptor));
567 req.bmRequestType = USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice);
568 req.bRequest = kUSBRqGetDescriptor;
569 req.wValue = kUSBDeviceDesc << 8;
571 req.wLength = sizeof(priv->dev_descriptor);
572 req.pData = &(priv->dev_descriptor);
574 /* according to Apple's documentation the device must be open for DeviceRequest but we may not be able to open some
575 * devices and Apple's USB Prober doesn't bother to open the device before issuing a descriptor request. Still,
576 * to follow the spec as closely as possible, try opening the device */
578 ret = (*(device))->DeviceRequest (device, &req);
580 if (kIOReturnOverrun == ret && kUSBDeviceDesc == priv->dev_descriptor.bDescriptorType)
581 /* received an overrun error but we still received a device descriptor */
582 ret = kIOReturnSuccess;
584 if (kIOReturnSuccess == ret && (0 == priv->dev_descriptor.idProduct ||
585 0 == priv->dev_descriptor.bNumConfigurations ||
586 0 == priv->dev_descriptor.bcdUSB)) {
587 /* work around for incorrectly configured devices */
588 if (try_reconfigure && is_open) {
589 usbi_dbg("descriptor appears to be invalid. resetting configuration before trying again...");
591 /* set the first configuration */
592 (*device)->SetConfiguration(device, 1);
594 /* don't try to reconfigure again */
598 ret = kIOUSBPipeStalled;
601 if (kIOReturnSuccess != ret && is_open && try_unsuspend) {
602 /* device may be suspended. unsuspend it and try again */
603 #if DeviceVersion >= 320
606 /* IOUSBFamily 320+ provides a way to detect device suspension but earlier versions do not */
607 (void)(*device)->GetUSBDeviceInformation (device, &info);
609 try_unsuspend = info & (1 << kUSBInformationDeviceIsSuspendedBit);
613 /* resume the device */
614 ret2 = (*device)->USBDeviceSuspend (device, 0);
615 if (kIOReturnSuccess != ret2) {
616 /* prevent log spew from poorly behaving devices. this indicates the
617 os actually had trouble communicating with the device */
618 usbi_dbg("could not retrieve device descriptor. failed to unsuspend: %s",darwin_error_str(ret2));
626 if (kIOReturnSuccess != ret) {
627 usbi_dbg("kernel responded with code: 0x%08x. sleeping for %d ms before trying again", ret, delay/1000);
628 /* sleep for a little while before trying again */
631 } while (kIOReturnSuccess != ret && retries--);
634 /* resuspend the device */
635 (void)(*device)->USBDeviceSuspend (device, 1);
638 (void) (*device)->USBDeviceClose (device);
640 if (ret != kIOReturnSuccess) {
641 /* a debug message was already printed out for this error */
642 if (LIBUSB_CLASS_HUB == bDeviceClass)
643 usbi_dbg ("could not retrieve device descriptor %.4x:%.4x: %s. skipping device", idVendor, idProduct, darwin_error_str (ret));
645 usbi_warn (ctx, "could not retrieve device descriptor %.4x:%.4x: %s. skipping device", idVendor, idProduct, darwin_error_str (ret));
650 usbi_dbg ("device descriptor:");
651 usbi_dbg (" bDescriptorType: 0x%02x", priv->dev_descriptor.bDescriptorType);
652 usbi_dbg (" bcdUSB: 0x%04x", priv->dev_descriptor.bcdUSB);
653 usbi_dbg (" bDeviceClass: 0x%02x", priv->dev_descriptor.bDeviceClass);
654 usbi_dbg (" bDeviceSubClass: 0x%02x", priv->dev_descriptor.bDeviceSubClass);
655 usbi_dbg (" bDeviceProtocol: 0x%02x", priv->dev_descriptor.bDeviceProtocol);
656 usbi_dbg (" bMaxPacketSize0: 0x%02x", priv->dev_descriptor.bMaxPacketSize0);
657 usbi_dbg (" idVendor: 0x%04x", priv->dev_descriptor.idVendor);
658 usbi_dbg (" idProduct: 0x%04x", priv->dev_descriptor.idProduct);
659 usbi_dbg (" bcdDevice: 0x%04x", priv->dev_descriptor.bcdDevice);
660 usbi_dbg (" iManufacturer: 0x%02x", priv->dev_descriptor.iManufacturer);
661 usbi_dbg (" iProduct: 0x%02x", priv->dev_descriptor.iProduct);
662 usbi_dbg (" iSerialNumber: 0x%02x", priv->dev_descriptor.iSerialNumber);
663 usbi_dbg (" bNumConfigurations: 0x%02x", priv->dev_descriptor.bNumConfigurations);
665 /* catch buggy hubs (which appear to be virtual). Apple's own USB prober has problems with these devices. */
666 if (libusb_le16_to_cpu (priv->dev_descriptor.idProduct) != idProduct) {
667 /* not a valid device */
668 usbi_warn (ctx, "idProduct from iokit (%04x) does not match idProduct in descriptor (%04x). skipping device",
669 idProduct, libusb_le16_to_cpu (priv->dev_descriptor.idProduct));
676 static int process_new_device (struct libusb_context *ctx, usb_device_t **device, UInt32 locationID, struct discovered_devs **_discdevs) {
677 struct darwin_device_priv *priv;
678 struct libusb_device *dev;
679 struct discovered_devs *discdevs;
682 int ret = 0, need_unref = 0;
685 dev = usbi_get_device_by_session_id(ctx, locationID);
687 usbi_info (ctx, "allocating new device for location 0x%08x", locationID);
688 dev = usbi_alloc_device(ctx, locationID);
691 usbi_info (ctx, "using existing device for location 0x%08x", locationID);
694 ret = LIBUSB_ERROR_NO_MEM;
698 priv = (struct darwin_device_priv *)dev->os_priv;
700 (*device)->GetDeviceAddress (device, (USBDeviceAddress *)&address);
702 ret = darwin_cache_device_descriptor (ctx, dev, device);
706 /* check current active configuration (and cache the first configuration value-- which may be used by claim_interface) */
707 ret = darwin_check_configuration (ctx, dev, device);
711 dev->bus_number = locationID >> 24;
712 dev->device_address = address;
714 (*device)->GetDeviceSpeed (device, &devSpeed);
717 case kUSBDeviceSpeedLow: dev->speed = LIBUSB_SPEED_LOW; break;
718 case kUSBDeviceSpeedFull: dev->speed = LIBUSB_SPEED_FULL; break;
719 case kUSBDeviceSpeedHigh: dev->speed = LIBUSB_SPEED_HIGH; break;
721 usbi_warn (ctx, "Got unknown device speed %d", devSpeed);
724 /* save our location, we'll need this later */
725 priv->location = locationID;
726 snprintf(priv->sys_path, 20, "%03i-%04x-%04x-%02x-%02x", address, priv->dev_descriptor.idVendor, priv->dev_descriptor.idProduct,
727 priv->dev_descriptor.bDeviceClass, priv->dev_descriptor.bDeviceSubClass);
729 ret = usbi_sanitize_device (dev);
733 /* append the device to the list of discovered devices */
734 discdevs = discovered_devs_append(*_discdevs, dev);
736 ret = LIBUSB_ERROR_NO_MEM;
740 *_discdevs = discdevs;
742 usbi_info (ctx, "found device with address %d at %s", dev->device_address, priv->sys_path);
746 libusb_unref_device(dev);
751 static int darwin_get_device_list(struct libusb_context *ctx, struct discovered_devs **_discdevs) {
752 io_iterator_t deviceIterator;
753 usb_device_t **device;
754 kern_return_t kresult;
757 kresult = usb_setup_device_iterator (&deviceIterator, 0);
758 if (kresult != kIOReturnSuccess)
759 return darwin_to_libusb (kresult);
761 while ((device = usb_get_next_device (deviceIterator, &location)) != NULL) {
762 (void) process_new_device (ctx, device, location, _discdevs);
764 (*(device))->Release(device);
767 IOObjectRelease(deviceIterator);
772 static int darwin_open (struct libusb_device_handle *dev_handle) {
773 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
774 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
775 usb_device_t **darwin_device;
778 if (0 == dpriv->open_count) {
779 kresult = darwin_get_device (dpriv->location, &darwin_device);
781 usbi_err (HANDLE_CTX (dev_handle), "could not find device: %s", darwin_error_str (kresult));
782 return darwin_to_libusb (kresult);
785 dpriv->device = darwin_device;
787 /* try to open the device */
788 kresult = (*(dpriv->device))->USBDeviceOpenSeize (dpriv->device);
790 if (kresult != kIOReturnSuccess) {
791 usbi_err (HANDLE_CTX (dev_handle), "USBDeviceOpen: %s", darwin_error_str(kresult));
794 case kIOReturnExclusiveAccess:
795 /* it is possible to perform some actions on a device that is not open so do not return an error */
800 (*(dpriv->device))->Release (dpriv->device);
801 dpriv->device = NULL;
802 return darwin_to_libusb (kresult);
805 /* create async event source */
806 kresult = (*(dpriv->device))->CreateDeviceAsyncEventSource (dpriv->device, &priv->cfSource);
807 if (kresult != kIOReturnSuccess) {
808 usbi_err (HANDLE_CTX (dev_handle), "CreateDeviceAsyncEventSource: %s", darwin_error_str(kresult));
810 (*(dpriv->device))->USBDeviceClose (dpriv->device);
811 (*(dpriv->device))->Release (dpriv->device);
813 dpriv->device = NULL;
814 return darwin_to_libusb (kresult);
819 CFRetain (libusb_darwin_acfl);
821 /* add the cfSource to the aync run loop */
822 CFRunLoopAddSource(libusb_darwin_acfl, priv->cfSource, kCFRunLoopCommonModes);
826 /* device opened successfully */
829 /* create a file descriptor for notifications */
832 /* set the pipe to be non-blocking */
833 fcntl (priv->fds[1], F_SETFD, O_NONBLOCK);
835 usbi_add_pollfd(HANDLE_CTX(dev_handle), priv->fds[0], POLLIN);
837 usbi_info (HANDLE_CTX (dev_handle), "device open for access");
842 static void darwin_close (struct libusb_device_handle *dev_handle) {
843 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
844 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
848 if (dpriv->open_count == 0) {
849 /* something is probably very wrong if this is the case */
850 usbi_err (HANDLE_CTX (dev_handle), "Close called on a device that was not open!\n");
856 /* make sure all interfaces are released */
857 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
858 if (dev_handle->claimed_interfaces & (1 << i))
859 libusb_release_interface (dev_handle, i);
861 if (0 == dpriv->open_count) {
863 /* delete the device's async event source */
864 if (priv->cfSource) {
865 CFRunLoopRemoveSource (libusb_darwin_acfl, priv->cfSource, kCFRunLoopDefaultMode);
866 CFRelease (priv->cfSource);
869 /* close the device */
870 kresult = (*(dpriv->device))->USBDeviceClose(dpriv->device);
872 /* Log the fact that we had a problem closing the file, however failing a
873 * close isn't really an error, so return success anyway */
874 usbi_err (HANDLE_CTX (dev_handle), "USBDeviceClose: %s", darwin_error_str(kresult));
878 kresult = (*(dpriv->device))->Release(dpriv->device);
880 /* Log the fact that we had a problem closing the file, however failing a
881 * close isn't really an error, so return success anyway */
882 usbi_err (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult));
885 dpriv->device = NULL;
888 /* file descriptors are maintained per-instance */
889 usbi_remove_pollfd (HANDLE_CTX (dev_handle), priv->fds[0]);
890 close (priv->fds[1]);
891 close (priv->fds[0]);
893 priv->fds[0] = priv->fds[1] = -1;
896 static int darwin_get_configuration(struct libusb_device_handle *dev_handle, int *config) {
897 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
899 *config = (int) dpriv->active_config;
904 static int darwin_set_configuration(struct libusb_device_handle *dev_handle, int config) {
905 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
909 /* Setting configuration will invalidate the interface, so we need
910 to reclaim it. First, dispose of existing interfaces, if any. */
911 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
912 if (dev_handle->claimed_interfaces & (1 << i))
913 darwin_release_interface (dev_handle, i);
915 kresult = (*(dpriv->device))->SetConfiguration (dpriv->device, config);
916 if (kresult != kIOReturnSuccess)
917 return darwin_to_libusb (kresult);
919 /* Reclaim any interfaces. */
920 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
921 if (dev_handle->claimed_interfaces & (1 << i))
922 darwin_claim_interface (dev_handle, i);
924 dpriv->active_config = config;
929 static int darwin_get_interface (usb_device_t **darwin_device, uint8_t ifc, io_service_t *usbInterfacep) {
930 IOUSBFindInterfaceRequest request;
931 uint8_t current_interface;
932 kern_return_t kresult;
933 io_iterator_t interface_iterator;
935 *usbInterfacep = IO_OBJECT_NULL;
937 /* Setup the Interface Request */
938 request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
939 request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
940 request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
941 request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
943 kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
947 for ( current_interface = 0 ; current_interface <= ifc ; current_interface++ ) {
948 *usbInterfacep = IOIteratorNext(interface_iterator);
949 if (current_interface != ifc)
950 (void) IOObjectRelease (*usbInterfacep);
953 /* done with the interface iterator */
954 IOObjectRelease(interface_iterator);
959 static int get_endpoints (struct libusb_device_handle *dev_handle, int iface) {
960 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
962 /* current interface */
963 struct darwin_interface *cInterface = &priv->interfaces[iface];
965 kern_return_t kresult;
967 u_int8_t numep, direction, number;
968 u_int8_t dont_care1, dont_care3;
969 u_int16_t dont_care2;
972 usbi_info (HANDLE_CTX (dev_handle), "building table of endpoints.");
974 /* retrieve the total number of endpoints on this interface */
975 kresult = (*(cInterface->interface))->GetNumEndpoints(cInterface->interface, &numep);
977 usbi_err (HANDLE_CTX (dev_handle), "can't get number of endpoints for interface: %s", darwin_error_str(kresult));
978 return darwin_to_libusb (kresult);
981 /* iterate through pipe references */
982 for (i = 1 ; i <= numep ; i++) {
983 kresult = (*(cInterface->interface))->GetPipeProperties(cInterface->interface, i, &direction, &number, &dont_care1,
984 &dont_care2, &dont_care3);
986 if (kresult != kIOReturnSuccess) {
987 usbi_err (HANDLE_CTX (dev_handle), "error getting pipe information for pipe %d: %s", i, darwin_error_str(kresult));
989 return darwin_to_libusb (kresult);
992 usbi_info (HANDLE_CTX (dev_handle), "interface: %i pipe %i: dir: %i number: %i", iface, i, direction, number);
994 cInterface->endpoint_addrs[i - 1] = ((direction << 7 & LIBUSB_ENDPOINT_DIR_MASK) | (number & LIBUSB_ENDPOINT_ADDRESS_MASK));
997 cInterface->num_endpoints = numep;
1002 static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface) {
1003 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
1004 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1005 io_service_t usbInterface = IO_OBJECT_NULL;
1007 IOCFPlugInInterface **plugInInterface = NULL;
1010 /* current interface */
1011 struct darwin_interface *cInterface = &priv->interfaces[iface];
1013 kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
1014 if (kresult != kIOReturnSuccess)
1015 return darwin_to_libusb (kresult);
1017 /* make sure we have an interface */
1018 if (!usbInterface && dpriv->first_config != 0) {
1019 usbi_info (HANDLE_CTX (dev_handle), "no interface found; setting configuration: %d", dpriv->first_config);
1021 /* set the configuration */
1022 kresult = darwin_set_configuration (dev_handle, dpriv->first_config);
1023 if (kresult != LIBUSB_SUCCESS) {
1024 usbi_err (HANDLE_CTX (dev_handle), "could not set configuration");
1028 kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
1030 usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult));
1031 return darwin_to_libusb (kresult);
1035 if (!usbInterface) {
1036 usbi_err (HANDLE_CTX (dev_handle), "interface not found");
1037 return LIBUSB_ERROR_NOT_FOUND;
1040 /* get an interface to the device's interface */
1041 kresult = IOCreatePlugInInterfaceForService (usbInterface, kIOUSBInterfaceUserClientTypeID,
1042 kIOCFPlugInInterfaceID, &plugInInterface, &score);
1044 /* ignore release error */
1045 (void)IOObjectRelease (usbInterface);
1048 usbi_err (HANDLE_CTX (dev_handle), "IOCreatePlugInInterfaceForService: %s", darwin_error_str(kresult));
1049 return darwin_to_libusb (kresult);
1052 if (!plugInInterface) {
1053 usbi_err (HANDLE_CTX (dev_handle), "plugin interface not found");
1054 return LIBUSB_ERROR_NOT_FOUND;
1057 /* Do the actual claim */
1058 kresult = (*plugInInterface)->QueryInterface(plugInInterface,
1059 CFUUIDGetUUIDBytes(kIOUSBInterfaceInterfaceID),
1060 (LPVOID)&cInterface->interface);
1061 /* We no longer need the intermediate plug-in */
1062 IODestroyPlugInInterface (plugInInterface);
1063 if (kresult || !cInterface->interface) {
1064 usbi_err (HANDLE_CTX (dev_handle), "QueryInterface: %s", darwin_error_str(kresult));
1065 return darwin_to_libusb (kresult);
1068 /* claim the interface */
1069 kresult = (*(cInterface->interface))->USBInterfaceOpen(cInterface->interface);
1071 usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceOpen: %s", darwin_error_str(kresult));
1072 return darwin_to_libusb (kresult);
1075 /* update list of endpoints */
1076 kresult = get_endpoints (dev_handle, iface);
1078 /* this should not happen */
1079 darwin_release_interface (dev_handle, iface);
1080 usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table");
1084 cInterface->cfSource = NULL;
1086 /* create async event source */
1087 kresult = (*(cInterface->interface))->CreateInterfaceAsyncEventSource (cInterface->interface, &cInterface->cfSource);
1088 if (kresult != kIOReturnSuccess) {
1089 usbi_err (HANDLE_CTX (dev_handle), "could not create async event source");
1091 /* can't continue without an async event source */
1092 (void)darwin_release_interface (dev_handle, iface);
1094 return darwin_to_libusb (kresult);
1097 /* add the cfSource to the async thread's run loop */
1098 CFRunLoopAddSource(libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
1100 usbi_info (HANDLE_CTX (dev_handle), "interface opened");
1105 static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface) {
1106 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1109 /* current interface */
1110 struct darwin_interface *cInterface = &priv->interfaces[iface];
1112 /* Check to see if an interface is open */
1113 if (!cInterface->interface)
1114 return LIBUSB_SUCCESS;
1116 /* clean up endpoint data */
1117 cInterface->num_endpoints = 0;
1119 /* delete the interface's async event source */
1120 if (cInterface->cfSource) {
1121 CFRunLoopRemoveSource (libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
1122 CFRelease (cInterface->cfSource);
1125 kresult = (*(cInterface->interface))->USBInterfaceClose(cInterface->interface);
1127 usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceClose: %s", darwin_error_str(kresult));
1129 kresult = (*(cInterface->interface))->Release(cInterface->interface);
1130 if (kresult != kIOReturnSuccess)
1131 usbi_err (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult));
1133 cInterface->interface = IO_OBJECT_NULL;
1135 return darwin_to_libusb (kresult);
1138 static int darwin_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) {
1139 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1142 /* current interface */
1143 struct darwin_interface *cInterface = &priv->interfaces[iface];
1145 if (!cInterface->interface)
1146 return LIBUSB_ERROR_NO_DEVICE;
1148 kresult = (*(cInterface->interface))->SetAlternateInterface (cInterface->interface, altsetting);
1149 if (kresult != kIOReturnSuccess)
1150 darwin_reset_device (dev_handle);
1152 /* update list of endpoints */
1153 kresult = get_endpoints (dev_handle, iface);
1155 /* this should not happen */
1156 darwin_release_interface (dev_handle, iface);
1157 usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table");
1161 return darwin_to_libusb (kresult);
1164 static int darwin_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) {
1165 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1167 /* current interface */
1168 struct darwin_interface *cInterface;
1169 uint8_t pipeRef, iface;
1172 /* determine the interface/endpoint to use */
1173 if (ep_to_pipeRef (dev_handle, endpoint, &pipeRef, &iface) != 0) {
1174 usbi_err (HANDLE_CTX (dev_handle), "endpoint not found on any open interface");
1176 return LIBUSB_ERROR_NOT_FOUND;
1179 cInterface = &priv->interfaces[iface];
1181 #if (InterfaceVersion < 190)
1182 kresult = (*(cInterface->interface))->ClearPipeStall(cInterface->interface, pipeRef);
1184 /* newer versions of darwin support clearing additional bits on the device's endpoint */
1185 kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
1188 usbi_err (HANDLE_CTX (dev_handle), "ClearPipeStall: %s", darwin_error_str (kresult));
1190 return darwin_to_libusb (kresult);
1193 static int darwin_reset_device(struct libusb_device_handle *dev_handle) {
1194 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
1197 kresult = (*(dpriv->device))->ResetDevice (dpriv->device);
1199 usbi_err (HANDLE_CTX (dev_handle), "ResetDevice: %s", darwin_error_str (kresult));
1201 return darwin_to_libusb (kresult);
1204 static int darwin_kernel_driver_active(struct libusb_device_handle *dev_handle, int interface) {
1205 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
1206 io_service_t usbInterface;
1210 kresult = darwin_get_interface (dpriv->device, interface, &usbInterface);
1212 usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult));
1214 return darwin_to_libusb (kresult);
1217 driver = IORegistryEntryCreateCFProperty (usbInterface, kIOBundleIdentifierKey, kCFAllocatorDefault, 0);
1218 IOObjectRelease (usbInterface);
1230 /* attaching/detaching kernel drivers is not currently supported (maybe in the future?) */
1231 static int darwin_attach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) {
1232 return LIBUSB_ERROR_NOT_SUPPORTED;
1235 static int darwin_detach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) {
1236 return LIBUSB_ERROR_NOT_SUPPORTED;
1239 static void darwin_destroy_device(struct libusb_device *dev) {
1242 static int submit_bulk_transfer(struct usbi_transfer *itransfer) {
1243 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1244 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
1247 uint8_t is_read; /* 0 = we're reading, 1 = we're writing */
1248 uint8_t transferType;
1249 /* None of the values below are used in libusb for bulk transfers */
1250 uint8_t direction, number, interval, pipeRef, iface;
1251 uint16_t maxPacketSize;
1253 struct darwin_interface *cInterface;
1255 /* are we reading or writing? */
1256 is_read = transfer->endpoint & LIBUSB_ENDPOINT_IN;
1258 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) {
1259 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1261 return LIBUSB_ERROR_NOT_FOUND;
1264 cInterface = &priv->interfaces[iface];
1266 (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
1267 &transferType, &maxPacketSize, &interval);
1269 /* submit the request */
1270 /* timeouts are unavailable on interrupt endpoints */
1271 if (transferType == kUSBInterrupt) {
1273 ret = (*(cInterface->interface))->ReadPipeAsync(cInterface->interface, pipeRef, transfer->buffer,
1274 transfer->length, darwin_async_io_callback, itransfer);
1276 ret = (*(cInterface->interface))->WritePipeAsync(cInterface->interface, pipeRef, transfer->buffer,
1277 transfer->length, darwin_async_io_callback, itransfer);
1279 itransfer->flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1282 ret = (*(cInterface->interface))->ReadPipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
1283 transfer->length, transfer->timeout, transfer->timeout,
1284 darwin_async_io_callback, (void *)itransfer);
1286 ret = (*(cInterface->interface))->WritePipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
1287 transfer->length, transfer->timeout, transfer->timeout,
1288 darwin_async_io_callback, (void *)itransfer);
1292 usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", is_read ? "In" : "Out",
1293 darwin_error_str(ret), ret);
1295 return darwin_to_libusb (ret);
1298 static int submit_iso_transfer(struct usbi_transfer *itransfer) {
1299 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1300 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1301 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
1304 uint8_t is_read; /* 0 = we're writing, 1 = we're reading */
1305 uint8_t pipeRef, iface;
1307 AbsoluteTime atTime;
1310 struct darwin_interface *cInterface;
1312 /* are we reading or writing? */
1313 is_read = transfer->endpoint & LIBUSB_ENDPOINT_IN;
1315 /* construct an array of IOUSBIsocFrames, reuse the old one if possible */
1316 if (tpriv->isoc_framelist && tpriv->num_iso_packets != transfer->num_iso_packets) {
1317 free(tpriv->isoc_framelist);
1318 tpriv->isoc_framelist = NULL;
1321 if (!tpriv->isoc_framelist) {
1322 tpriv->num_iso_packets = transfer->num_iso_packets;
1323 tpriv->isoc_framelist = (IOUSBIsocFrame*) calloc (transfer->num_iso_packets, sizeof(IOUSBIsocFrame));
1324 if (!tpriv->isoc_framelist)
1325 return LIBUSB_ERROR_NO_MEM;
1328 /* copy the frame list from the libusb descriptor (the structures differ only is member order) */
1329 for (i = 0 ; i < transfer->num_iso_packets ; i++)
1330 tpriv->isoc_framelist[i].frReqCount = transfer->iso_packet_desc[i].length;
1332 /* determine the interface/endpoint to use */
1333 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) {
1334 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1336 return LIBUSB_ERROR_NOT_FOUND;
1339 cInterface = &priv->interfaces[iface];
1341 /* Last but not least we need the bus frame number */
1342 kresult = (*(cInterface->interface))->GetBusFrameNumber(cInterface->interface, &frame, &atTime);
1344 usbi_err (TRANSFER_CTX (transfer), "failed to get bus frame number: %d", kresult);
1345 free(tpriv->isoc_framelist);
1346 tpriv->isoc_framelist = NULL;
1348 return darwin_to_libusb (kresult);
1351 /* schedule for a frame a little in the future */
1354 if (cInterface->frames[transfer->endpoint] && frame < cInterface->frames[transfer->endpoint])
1355 frame = cInterface->frames[transfer->endpoint];
1357 /* submit the request */
1359 kresult = (*(cInterface->interface))->ReadIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
1360 transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
1363 kresult = (*(cInterface->interface))->WriteIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
1364 transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
1367 cInterface->frames[transfer->endpoint] = frame + transfer->num_iso_packets / 8;
1369 if (kresult != kIOReturnSuccess) {
1370 usbi_err (TRANSFER_CTX (transfer), "isochronous transfer failed (dir: %s): %s", is_read ? "In" : "Out",
1371 darwin_error_str(kresult));
1372 free (tpriv->isoc_framelist);
1373 tpriv->isoc_framelist = NULL;
1376 return darwin_to_libusb (kresult);
1379 static int submit_control_transfer(struct usbi_transfer *itransfer) {
1380 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1381 struct libusb_control_setup *setup = (struct libusb_control_setup *) transfer->buffer;
1382 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)transfer->dev_handle->dev->os_priv;
1383 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
1384 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1388 bzero(&tpriv->req, sizeof(tpriv->req));
1390 /* IOUSBDeviceInterface expects the request in cpu endianess */
1391 tpriv->req.bmRequestType = setup->bmRequestType;
1392 tpriv->req.bRequest = setup->bRequest;
1393 /* these values should be in bus order from libusb_fill_control_setup */
1394 tpriv->req.wValue = OSSwapLittleToHostInt16 (setup->wValue);
1395 tpriv->req.wIndex = OSSwapLittleToHostInt16 (setup->wIndex);
1396 tpriv->req.wLength = OSSwapLittleToHostInt16 (setup->wLength);
1397 /* data is stored after the libusb control block */
1398 tpriv->req.pData = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE;
1399 tpriv->req.completionTimeout = transfer->timeout;
1400 tpriv->req.noDataTimeout = transfer->timeout;
1402 itransfer->flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1404 /* all transfers in libusb-1.0 are async */
1406 if (transfer->endpoint) {
1407 struct darwin_interface *cInterface;
1408 uint8_t pipeRef, iface;
1410 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) {
1411 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1413 return LIBUSB_ERROR_NOT_FOUND;
1416 cInterface = &priv->interfaces[iface];
1418 kresult = (*(cInterface->interface))->ControlRequestAsyncTO (cInterface->interface, pipeRef, &(tpriv->req), darwin_async_io_callback, itransfer);
1420 /* control request on endpoint 0 */
1421 kresult = (*(dpriv->device))->DeviceRequestAsyncTO(dpriv->device, &(tpriv->req), darwin_async_io_callback, itransfer);
1423 if (kresult != kIOReturnSuccess)
1424 usbi_err (TRANSFER_CTX (transfer), "control request failed: %s", darwin_error_str(kresult));
1426 return darwin_to_libusb (kresult);
1429 static int darwin_submit_transfer(struct usbi_transfer *itransfer) {
1430 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1432 switch (transfer->type) {
1433 case LIBUSB_TRANSFER_TYPE_CONTROL:
1434 return submit_control_transfer(itransfer);
1435 case LIBUSB_TRANSFER_TYPE_BULK:
1436 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
1437 return submit_bulk_transfer(itransfer);
1438 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
1439 return submit_iso_transfer(itransfer);
1441 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1442 return LIBUSB_ERROR_INVALID_PARAM;
1446 static int cancel_control_transfer(struct usbi_transfer *itransfer) {
1447 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1448 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)transfer->dev_handle->dev->os_priv;
1451 usbi_info (ITRANSFER_CTX (itransfer), "WARNING: aborting all transactions control pipe");
1454 return LIBUSB_ERROR_NO_DEVICE;
1456 kresult = (*(dpriv->device))->USBDeviceAbortPipeZero (dpriv->device);
1458 return darwin_to_libusb (kresult);
1461 static int darwin_abort_transfers (struct usbi_transfer *itransfer) {
1462 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1463 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)transfer->dev_handle->dev->os_priv;
1464 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
1465 struct darwin_interface *cInterface;
1466 uint8_t pipeRef, iface;
1469 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) {
1470 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1472 return LIBUSB_ERROR_NOT_FOUND;
1475 cInterface = &priv->interfaces[iface];
1478 return LIBUSB_ERROR_NO_DEVICE;
1480 usbi_info (ITRANSFER_CTX (itransfer), "WARNING: aborting all transactions on interface %d pipe %d", iface, pipeRef);
1482 /* abort transactions */
1483 (*(cInterface->interface))->AbortPipe (cInterface->interface, pipeRef);
1485 usbi_info (ITRANSFER_CTX (itransfer), "calling clear pipe stall to clear the data toggle bit");
1487 /* clear the data toggle bit */
1488 #if (InterfaceVersion < 190)
1489 kresult = (*(cInterface->interface))->ClearPipeStall(cInterface->interface, pipeRef);
1491 /* newer versions of darwin support clearing additional bits on the device's endpoint */
1492 kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
1495 return darwin_to_libusb (kresult);
1498 static int darwin_cancel_transfer(struct usbi_transfer *itransfer) {
1499 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1501 switch (transfer->type) {
1502 case LIBUSB_TRANSFER_TYPE_CONTROL:
1503 return cancel_control_transfer(itransfer);
1504 case LIBUSB_TRANSFER_TYPE_BULK:
1505 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
1506 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
1507 return darwin_abort_transfers (itransfer);
1509 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1510 return LIBUSB_ERROR_INVALID_PARAM;
1514 static void darwin_clear_transfer_priv (struct usbi_transfer *itransfer) {
1515 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1516 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1518 if (transfer->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS && tpriv->isoc_framelist) {
1519 free (tpriv->isoc_framelist);
1520 tpriv->isoc_framelist = NULL;
1524 static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0) {
1525 struct usbi_transfer *itransfer = (struct usbi_transfer *)refcon;
1526 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1527 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
1528 UInt32 message, size;
1530 usbi_info (ITRANSFER_CTX (itransfer), "an async io operation has completed");
1532 size = (UInt32) arg0;
1534 /* send a completion message to the device's file descriptor */
1535 message = MESSAGE_ASYNC_IO_COMPLETE;
1536 write (priv->fds[1], &message, sizeof (message));
1537 write (priv->fds[1], &itransfer, sizeof (itransfer));
1538 write (priv->fds[1], &result, sizeof (IOReturn));
1539 write (priv->fds[1], &size, sizeof (size));
1542 static int darwin_transfer_status (struct usbi_transfer *itransfer, kern_return_t result) {
1543 if (itransfer->flags & USBI_TRANSFER_TIMED_OUT)
1544 result = kIOUSBTransactionTimeout;
1547 case kIOReturnUnderrun:
1548 case kIOReturnSuccess:
1549 return LIBUSB_TRANSFER_COMPLETED;
1550 case kIOReturnAborted:
1551 return LIBUSB_TRANSFER_CANCELLED;
1552 case kIOUSBPipeStalled:
1553 usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: pipe is stalled");
1554 return LIBUSB_TRANSFER_STALL;
1555 case kIOReturnOverrun:
1556 usbi_err (ITRANSFER_CTX (itransfer), "transfer error: data overrun");
1557 return LIBUSB_TRANSFER_OVERFLOW;
1558 case kIOUSBTransactionTimeout:
1559 usbi_err (ITRANSFER_CTX (itransfer), "transfer error: timed out");
1560 itransfer->flags |= USBI_TRANSFER_TIMED_OUT;
1561 return LIBUSB_TRANSFER_TIMED_OUT;
1563 usbi_err (ITRANSFER_CTX (itransfer), "transfer error: %s (value = 0x%08x)", darwin_error_str (result), result);
1564 return LIBUSB_TRANSFER_ERROR;
1568 static void darwin_handle_callback (struct usbi_transfer *itransfer, kern_return_t result, UInt32 io_size) {
1569 struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1570 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1571 int isIsoc = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS == transfer->type;
1572 int isBulk = LIBUSB_TRANSFER_TYPE_BULK == transfer->type;
1573 int isControl = LIBUSB_TRANSFER_TYPE_CONTROL == transfer->type;
1574 int isInterrupt = LIBUSB_TRANSFER_TYPE_INTERRUPT == transfer->type;
1577 if (!isIsoc && !isBulk && !isControl && !isInterrupt) {
1578 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1582 usbi_info (ITRANSFER_CTX (itransfer), "handling %s completion with kernel status %d",
1583 isControl ? "control" : isBulk ? "bulk" : isIsoc ? "isoc" : "interrupt", result);
1585 if (kIOReturnSuccess == result || kIOReturnUnderrun == result) {
1586 if (isIsoc && tpriv->isoc_framelist) {
1587 /* copy isochronous results back */
1589 for (i = 0; i < transfer->num_iso_packets ; i++) {
1590 struct libusb_iso_packet_descriptor *lib_desc = &transfer->iso_packet_desc[i];
1591 lib_desc->status = darwin_to_libusb (tpriv->isoc_framelist[i].frStatus);
1592 lib_desc->actual_length = tpriv->isoc_framelist[i].frActCount;
1595 itransfer->transferred += io_size;
1598 /* it is ok to handle cancelled transfers without calling usbi_handle_transfer_cancellation (we catch timeout transfers) */
1599 usbi_handle_transfer_completion (itransfer, darwin_transfer_status (itransfer, result));
1602 static int op_handle_events(struct libusb_context *ctx, struct pollfd *fds, POLL_NFDS_TYPE nfds, int num_ready) {
1603 struct usbi_transfer *itransfer;
1609 usbi_mutex_lock(&ctx->open_devs_lock);
1610 for (i = 0; i < nfds && num_ready > 0; i++) {
1611 struct pollfd *pollfd = &fds[i];
1612 struct libusb_device_handle *handle;
1613 struct darwin_device_handle_priv *hpriv = NULL;
1615 usbi_info (ctx, "checking fd %i with revents = %x", fds[i], pollfd->revents);
1617 if (!pollfd->revents)
1621 list_for_each_entry(handle, &ctx->open_devs, list, struct libusb_device_handle) {
1622 hpriv = (struct darwin_device_handle_priv *)handle->os_priv;
1623 if (hpriv->fds[0] == pollfd->fd)
1627 if (!(pollfd->revents & POLLERR)) {
1628 ret = read (hpriv->fds[0], &message, sizeof (message));
1629 if (ret < sizeof (message))
1632 /* could not poll the device-- response is to delete the device (this seems a little heavy-handed) */
1633 message = MESSAGE_DEVICE_GONE;
1636 case MESSAGE_DEVICE_GONE:
1637 /* remove the device's async port from the runloop */
1638 if (hpriv->cfSource) {
1639 if (libusb_darwin_acfl)
1640 CFRunLoopRemoveSource (libusb_darwin_acfl, hpriv->cfSource, kCFRunLoopDefaultMode);
1641 CFRelease (hpriv->cfSource);
1642 hpriv->cfSource = NULL;
1645 usbi_remove_pollfd(HANDLE_CTX(handle), hpriv->fds[0]);
1646 usbi_handle_disconnect(handle);
1648 /* done with this device */
1650 case MESSAGE_ASYNC_IO_COMPLETE:
1651 read (hpriv->fds[0], &itransfer, sizeof (itransfer));
1652 read (hpriv->fds[0], &kresult, sizeof (IOReturn));
1653 read (hpriv->fds[0], &io_size, sizeof (UInt32));
1655 darwin_handle_callback (itransfer, kresult, io_size);
1658 usbi_err (ctx, "unknown message received from device pipe");
1662 usbi_mutex_unlock(&ctx->open_devs_lock);
1667 static int darwin_clock_gettime(int clk_id, struct timespec *tp) {
1668 mach_timespec_t sys_time;
1669 clock_serv_t clock_ref;
1672 case USBI_CLOCK_REALTIME:
1673 /* CLOCK_REALTIME represents time since the epoch */
1674 host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &clock_ref);
1676 case USBI_CLOCK_MONOTONIC:
1677 /* use system boot time as reference for the monotonic clock */
1678 host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &clock_ref);
1681 return LIBUSB_ERROR_INVALID_PARAM;
1684 clock_get_time (clock_ref, &sys_time);
1686 tp->tv_sec = sys_time.tv_sec;
1687 tp->tv_nsec = sys_time.tv_nsec;
1692 const struct usbi_os_backend darwin_backend = {
1694 .init = darwin_init,
1695 .exit = darwin_exit,
1696 .get_device_list = darwin_get_device_list,
1697 .get_device_descriptor = darwin_get_device_descriptor,
1698 .get_active_config_descriptor = darwin_get_active_config_descriptor,
1699 .get_config_descriptor = darwin_get_config_descriptor,
1701 .open = darwin_open,
1702 .close = darwin_close,
1703 .get_configuration = darwin_get_configuration,
1704 .set_configuration = darwin_set_configuration,
1705 .claim_interface = darwin_claim_interface,
1706 .release_interface = darwin_release_interface,
1708 .set_interface_altsetting = darwin_set_interface_altsetting,
1709 .clear_halt = darwin_clear_halt,
1710 .reset_device = darwin_reset_device,
1712 .kernel_driver_active = darwin_kernel_driver_active,
1713 .detach_kernel_driver = darwin_detach_kernel_driver,
1714 .attach_kernel_driver = darwin_attach_kernel_driver,
1716 .destroy_device = darwin_destroy_device,
1718 .submit_transfer = darwin_submit_transfer,
1719 .cancel_transfer = darwin_cancel_transfer,
1720 .clear_transfer_priv = darwin_clear_transfer_priv,
1722 .handle_events = op_handle_events,
1724 .clock_gettime = darwin_clock_gettime,
1726 .device_priv_size = sizeof(struct darwin_device_priv),
1727 .device_handle_priv_size = sizeof(struct darwin_device_handle_priv),
1728 .transfer_priv_size = sizeof(struct darwin_transfer_priv),
1729 .add_iso_packet_size = 0,