2 * darwin backend for libusb 1.0
3 * Copyright (C) 2008-2010 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>
38 #include <mach/mach_port.h>
39 #include <IOKit/IOCFBundle.h>
40 #include <IOKit/usb/IOUSBLib.h>
41 #include <IOKit/IOCFPlugIn.h>
43 #include "darwin_usb.h"
45 static mach_port_t libusb_darwin_mp = 0; /* master port */
46 static CFRunLoopRef libusb_darwin_acfl = NULL; /* async cf loop */
47 static int initCount = 0;
49 /* async event thread */
50 static pthread_t libusb_darwin_at;
52 static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian);
53 static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface);
54 static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface);
55 static int darwin_reset_device(struct libusb_device_handle *dev_handle);
56 static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0);
58 static const char *darwin_error_str (int result) {
60 case kIOReturnSuccess:
62 case kIOReturnNotOpen:
63 return "device not opened for exclusive access";
64 case kIOReturnNoDevice:
65 return "no connection to an IOService";
66 case kIOUSBNoAsyncPortErr:
67 return "no async port has been opened for interface";
68 case kIOReturnExclusiveAccess:
69 return "another process has device opened for exclusive access";
70 case kIOUSBPipeStalled:
71 return "pipe is stalled";
73 return "could not establish a connection to the Darwin kernel";
74 case kIOUSBTransactionTimeout:
75 return "transaction timed out";
76 case kIOReturnBadArgument:
77 return "invalid argument";
78 case kIOReturnAborted:
79 return "transaction aborted";
80 case kIOReturnNotResponding:
81 return "device not responding";
82 case kIOReturnOverrun:
83 return "data overrun";
84 case kIOReturnCannotWire:
85 return "physical memory can not be wired down";
87 return "unknown error";
91 static int darwin_to_libusb (int result) {
93 case kIOReturnUnderrun:
94 case kIOReturnSuccess:
95 return LIBUSB_SUCCESS;
96 case kIOReturnNotOpen:
97 case kIOReturnNoDevice:
98 return LIBUSB_ERROR_NO_DEVICE;
99 case kIOReturnExclusiveAccess:
100 return LIBUSB_ERROR_ACCESS;
101 case kIOUSBPipeStalled:
102 return LIBUSB_ERROR_PIPE;
103 case kIOReturnBadArgument:
104 return LIBUSB_ERROR_INVALID_PARAM;
105 case kIOUSBTransactionTimeout:
106 return LIBUSB_ERROR_TIMEOUT;
107 case kIOReturnNotResponding:
108 case kIOReturnAborted:
110 case kIOUSBNoAsyncPortErr:
112 return LIBUSB_ERROR_OTHER;
117 static int ep_to_pipeRef(struct libusb_device_handle *dev_handle, uint8_t ep, uint8_t *pipep, uint8_t *ifcp) {
118 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
120 /* current interface */
121 struct __darwin_interface *cInterface;
125 usbi_info (HANDLE_CTX(dev_handle), "converting ep address 0x%02x to pipeRef and interface", ep);
127 for (iface = 0 ; iface < USB_MAXINTERFACES ; iface++) {
128 cInterface = &priv->interfaces[iface];
130 if (dev_handle->claimed_interfaces & (1 << iface)) {
131 for (i = 0 ; i < cInterface->num_endpoints ; i++) {
132 if (cInterface->endpoint_addrs[i] == ep) {
135 usbi_info (HANDLE_CTX(dev_handle), "pipe %d on interface %d matches", *pipep, *ifcp);
142 /* No pipe found with the correct endpoint address */
143 usbi_warn (HANDLE_CTX(dev_handle), "no pipeRef found with endpoint address 0x%02x.", ep);
148 static int usb_setup_device_iterator (io_iterator_t *deviceIterator) {
149 return IOServiceGetMatchingServices(libusb_darwin_mp, IOServiceMatching(kIOUSBDeviceClassName), deviceIterator);
152 static usb_device_t **usb_get_next_device (io_iterator_t deviceIterator, UInt32 *locationp) {
153 io_cf_plugin_ref_t *plugInInterface = NULL;
154 usb_device_t **device;
155 io_service_t usbDevice;
159 if (!IOIteratorIsValid (deviceIterator))
163 while ((usbDevice = IOIteratorNext(deviceIterator))) {
164 result = IOCreatePlugInInterfaceForService(usbDevice, kIOUSBDeviceUserClientTypeID,
165 kIOCFPlugInInterfaceID, &plugInInterface,
167 if (kIOReturnSuccess == result && plugInInterface)
170 usbi_dbg ("libusb/darwin.c usb_get_next_device: could not set up plugin for service: %s\n", darwin_error_str (result));
176 (void)IOObjectRelease(usbDevice);
177 (void)(*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(DeviceInterfaceID),
180 (*plugInInterface)->Stop(plugInInterface);
181 IODestroyPlugInInterface (plugInInterface);
183 /* get the location from the device */
185 (*(device))->GetLocationID(device, locationp);
190 static kern_return_t darwin_get_device (uint32_t dev_location, usb_device_t ***darwin_device) {
191 kern_return_t kresult;
193 io_iterator_t deviceIterator;
195 kresult = usb_setup_device_iterator (&deviceIterator);
199 /* This port of libusb uses locations to keep track of devices. */
200 while ((*darwin_device = usb_get_next_device (deviceIterator, &location)) != NULL) {
201 if (location == dev_location)
204 (**darwin_device)->Release(*darwin_device);
207 IOObjectRelease (deviceIterator);
209 if (!(*darwin_device))
210 return kIOReturnNoDevice;
212 return kIOReturnSuccess;
217 static void darwin_devices_detached (void *ptr, io_iterator_t rem_devices) {
218 struct libusb_context *ctx = (struct libusb_context *)ptr;
219 struct libusb_device_handle *handle;
220 struct darwin_device_priv *dpriv;
221 struct darwin_device_handle_priv *priv;
225 CFTypeRef locationCF;
228 usbi_info (ctx, "a device has been detached");
230 while ((device = IOIteratorNext (rem_devices)) != 0) {
231 /* get the location from the i/o registry */
232 locationCF = IORegistryEntryCreateCFProperty (device, CFSTR(kUSBDevicePropertyLocationID), kCFAllocatorDefault, 0);
234 CFNumberGetValue(locationCF, kCFNumberLongType, &location);
235 CFRelease (locationCF);
236 IOObjectRelease (device);
238 usbi_mutex_lock(&ctx->open_devs_lock);
239 list_for_each_entry(handle, &ctx->open_devs, list, struct libusb_device_handle) {
240 dpriv = (struct darwin_device_priv *)handle->dev->os_priv;
242 /* the device may have been opened several times. write to each handle's event descriptor */
243 if (dpriv->location == location && handle->os_priv) {
244 priv = (struct darwin_device_handle_priv *)handle->os_priv;
246 message = MESSAGE_DEVICE_GONE;
247 write (priv->fds[1], &message, sizeof (message));
251 usbi_mutex_unlock(&ctx->open_devs_lock);
255 static void darwin_clear_iterator (io_iterator_t iter) {
258 while ((device = IOIteratorNext (iter)) != 0)
259 IOObjectRelease (device);
262 static void *event_thread_main (void *arg0) {
264 struct libusb_context *ctx = (struct libusb_context *)arg0;
266 /* hotplug (device removal) source */
267 CFRunLoopSourceRef libusb_notification_cfsource;
268 io_notification_port_t libusb_notification_port;
269 io_iterator_t libusb_rem_device_iterator;
271 usbi_info (ctx, "creating hotplug event source");
273 CFRetain (CFRunLoopGetCurrent ());
275 /* add the notification port to the run loop */
276 libusb_notification_port = IONotificationPortCreate (libusb_darwin_mp);
277 libusb_notification_cfsource = IONotificationPortGetRunLoopSource (libusb_notification_port);
278 CFRunLoopAddSource(CFRunLoopGetCurrent (), libusb_notification_cfsource, kCFRunLoopDefaultMode);
280 /* create notifications for removed devices */
281 kresult = IOServiceAddMatchingNotification (libusb_notification_port, kIOTerminatedNotification,
282 IOServiceMatching(kIOUSBDeviceClassName),
283 (IOServiceMatchingCallback)darwin_devices_detached,
284 (void *)ctx, &libusb_rem_device_iterator);
286 if (kresult != kIOReturnSuccess) {
287 usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult));
289 pthread_exit ((void *)kresult);
293 darwin_clear_iterator (libusb_rem_device_iterator);
295 /* let the main thread know about the async runloop */
296 libusb_darwin_acfl = CFRunLoopGetCurrent ();
298 usbi_info (ctx, "thread ready to receive events");
300 /* run the runloop */
303 usbi_info (ctx, "thread exiting");
305 /* delete notification port */
306 CFRunLoopSourceInvalidate (libusb_notification_cfsource);
307 IONotificationPortDestroy (libusb_notification_port);
309 CFRelease (CFRunLoopGetCurrent ());
311 libusb_darwin_acfl = NULL;
316 static int darwin_init(struct libusb_context *ctx) {
319 if (!(initCount++)) {
320 /* Create the master port for talking to IOKit */
321 if (!libusb_darwin_mp) {
322 kresult = IOMasterPort (MACH_PORT_NULL, &libusb_darwin_mp);
324 if (kresult != kIOReturnSuccess || !libusb_darwin_mp)
325 return darwin_to_libusb (kresult);
328 pthread_create (&libusb_darwin_at, NULL, event_thread_main, (void *)ctx);
330 while (!libusb_darwin_acfl)
337 static void darwin_exit (void) {
338 if (!(--initCount)) {
341 /* stop the async runloop */
342 CFRunLoopStop (libusb_darwin_acfl);
343 pthread_join (libusb_darwin_at, &ret);
345 if (libusb_darwin_mp)
346 mach_port_deallocate(mach_task_self(), libusb_darwin_mp);
348 libusb_darwin_mp = 0;
352 static int darwin_get_device_descriptor(struct libusb_device *dev, unsigned char *buffer, int *host_endian) {
353 struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
355 /* return cached copy */
356 memmove (buffer, &(priv->dev_descriptor), DEVICE_DESC_LENGTH);
363 static int get_configuration_index (struct libusb_device *dev, int config_value) {
364 struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
366 IOUSBConfigurationDescriptorPtr desc;
369 /* is there a simpler way to determine the index? */
370 kresult = (*(priv->device))->GetNumberOfConfigurations (priv->device, &numConfig);
371 if (kresult != kIOReturnSuccess)
372 return darwin_to_libusb (kresult);
374 for (i = 0 ; i < numConfig ; i++) {
375 (*(priv->device))->GetConfigurationDescriptorPtr (priv->device, i, &desc);
377 if (desc->bConfigurationValue == config_value)
381 /* configuration not found */
382 return LIBUSB_ERROR_OTHER;
385 static int darwin_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian) {
386 struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
389 if (0 == priv->active_config)
390 return LIBUSB_ERROR_INVALID_PARAM;
392 config_index = get_configuration_index (dev, priv->active_config);
393 if (config_index < 0)
396 return darwin_get_config_descriptor (dev, config_index, buffer, len, host_endian);
399 static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) {
400 struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
401 IOUSBConfigurationDescriptorPtr desc;
403 usb_device_t **device = NULL;
406 return LIBUSB_ERROR_OTHER;
409 kresult = darwin_get_device (priv->location, &device);
410 if (kresult || !device) {
411 usbi_err (DEVICE_CTX (dev), "could not find device: %s", darwin_error_str (kresult));
413 return darwin_to_libusb (kresult);
416 /* don't have to open the device to get a config descriptor */
418 device = priv->device;
420 kresult = (*device)->GetConfigurationDescriptorPtr (device, config_index, &desc);
421 if (kresult == kIOReturnSuccess) {
422 /* copy descriptor */
423 if (libusb_le16_to_cpu(desc->wTotalLength) < len)
424 len = libusb_le16_to_cpu(desc->wTotalLength);
426 memmove (buffer, desc, len);
428 /* GetConfigurationDescriptorPtr returns the descriptor in USB bus order */
433 (*device)->Release (device);
435 return darwin_to_libusb (kresult);
438 /* check whether the os has configured the device */
439 static int darwin_check_configuration (struct libusb_context *ctx, struct libusb_device *dev, usb_device_t **darwin_device) {
440 struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
442 IOUSBConfigurationDescriptorPtr configDesc;
443 IOUSBFindInterfaceRequest request;
444 kern_return_t kresult;
445 io_iterator_t interface_iterator;
446 io_service_t firstInterface;
448 if (priv->dev_descriptor.bNumConfigurations < 1) {
449 usbi_err (ctx, "device has no configurations");
450 return LIBUSB_ERROR_OTHER; /* no configurations at this speed so we can't use it */
453 /* find the first configuration */
454 kresult = (*darwin_device)->GetConfigurationDescriptorPtr (darwin_device, 0, &configDesc);
455 priv->first_config = (kIOReturnSuccess == kresult) ? configDesc->bConfigurationValue : 1;
457 /* check if the device is already configured. there is probably a better way than iterating over the
458 to accomplish this (the trick is we need to avoid a call to GetConfigurations since buggy devices
459 might lock up on the device request) */
461 /* Setup the Interface Request */
462 request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
463 request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
464 request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
465 request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
467 kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
469 return darwin_to_libusb (kresult);
472 firstInterface = IOIteratorNext(interface_iterator);
474 /* done with the interface iterator */
475 IOObjectRelease(interface_iterator);
477 if (firstInterface) {
478 IOObjectRelease (firstInterface);
480 /* device is configured */
481 if (priv->dev_descriptor.bNumConfigurations == 1)
482 /* to avoid problems with some devices get the configurations value from the configuration descriptor */
483 priv->active_config = priv->first_config;
485 /* devices with more than one configuration should work with GetConfiguration */
486 (*darwin_device)->GetConfiguration (darwin_device, &priv->active_config);
489 priv->active_config = 0;
491 usbi_info (ctx, "active config: %u, first config: %u", priv->active_config, priv->first_config);
496 static int process_new_device (struct libusb_context *ctx, usb_device_t **device, UInt32 locationID, struct discovered_devs **_discdevs) {
497 struct darwin_device_priv *priv;
498 struct libusb_device *dev;
499 struct discovered_devs *discdevs;
500 UInt16 address, idVendor, idProduct;
501 UInt8 bDeviceClass, bDeviceSubClass;
503 int ret = 0, need_unref = 0;
506 dev = usbi_get_device_by_session_id(ctx, locationID);
508 usbi_info (ctx, "allocating new device for location 0x%08x", locationID);
509 dev = usbi_alloc_device(ctx, locationID);
512 usbi_info (ctx, "using existing device for location 0x%08x", locationID);
515 ret = LIBUSB_ERROR_NO_MEM;
519 priv = (struct darwin_device_priv *)dev->os_priv;
521 /* Set up request for device descriptor */
522 req.bmRequestType = USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice);
523 req.bRequest = kUSBRqGetDescriptor;
524 req.wValue = kUSBDeviceDesc << 8;
526 req.wLength = sizeof(IOUSBDeviceDescriptor);
527 req.pData = &(priv->dev_descriptor);
529 (*(device))->GetDeviceAddress (device, (USBDeviceAddress *)&address);
530 (*(device))->GetDeviceProduct (device, &idProduct);
531 (*(device))->GetDeviceVendor (device, &idVendor);
532 (*(device))->GetDeviceClass (device, &bDeviceClass);
533 (*(device))->GetDeviceSubClass (device, &bDeviceSubClass);
535 /**** retrieve device descriptors ****/
536 /* according to Apple's documentation the device must be open for DeviceRequest but we may not be able to open some
537 * devices and Apple's USB Prober doesn't bother to open the device before issuing a descriptor request */
538 ret = (*(device))->DeviceRequest (device, &req);
539 if (ret != kIOReturnSuccess) {
540 int try_unsuspend = 1;
541 #if DeviceVersion >= 320
544 /* device may be suspended. unsuspend it and try again */
545 /* IOUSBFamily 320+ provides a way to detect device suspension but earlier versions do not */
546 (void)(*device)->GetUSBDeviceInformation (device, &info);
548 try_unsuspend = info & (1 << kUSBInformationDeviceIsSuspendedBit);
551 /* the device should be open before to device is unsuspended */
552 (void) (*device)->USBDeviceOpenSeize(device);
555 /* resume the device */
556 (void)(*device)->USBDeviceSuspend (device, 0);
558 ret = (*(device))->DeviceRequest (device, &req);
560 /* resuspend the device */
561 (void)(*device)->USBDeviceSuspend (device, 1);
564 (*device)->USBDeviceClose (device);
567 if (ret != kIOReturnSuccess) {
568 usbi_warn (ctx, "could not retrieve device descriptor: %s. skipping device", darwin_error_str (ret));
573 /**** end: retrieve device descriptors ****/
575 /* catch buggy hubs (which appear to be virtual). Apple's own USB prober has problems with these devices. */
576 if (libusb_le16_to_cpu (priv->dev_descriptor.idProduct) != idProduct) {
577 /* not a valid device */
578 usbi_warn (ctx, "idProduct from iokit (%04x) does not match idProduct in descriptor (%04x). skipping device",
579 idProduct, libusb_le16_to_cpu (priv->dev_descriptor.idProduct));
584 dev->bus_number = locationID >> 24;
585 dev->device_address = address;
587 /* check current active configuration (and cache the first configuration value-- which may be used by claim_interface) */
588 ret = darwin_check_configuration (ctx, dev, device);
592 /* save our location, we'll need this later */
593 priv->location = locationID;
594 snprintf(priv->sys_path, 20, "%03i-%04x-%04x-%02x-%02x", address, idVendor, idProduct, bDeviceClass, bDeviceSubClass);
596 ret = usbi_sanitize_device (dev);
600 /* append the device to the list of discovered devices */
601 discdevs = discovered_devs_append(*_discdevs, dev);
603 ret = LIBUSB_ERROR_NO_MEM;
607 *_discdevs = discdevs;
609 usbi_info (ctx, "found device with address %d at %s", dev->device_address, priv->sys_path);
613 libusb_unref_device(dev);
618 static int darwin_get_device_list(struct libusb_context *ctx, struct discovered_devs **_discdevs) {
619 io_iterator_t deviceIterator;
620 usb_device_t **device;
621 kern_return_t kresult;
624 if (!libusb_darwin_mp)
625 return LIBUSB_ERROR_INVALID_PARAM;
627 kresult = usb_setup_device_iterator (&deviceIterator);
628 if (kresult != kIOReturnSuccess)
629 return darwin_to_libusb (kresult);
631 while ((device = usb_get_next_device (deviceIterator, &location)) != NULL) {
632 (void) process_new_device (ctx, device, location, _discdevs);
634 (*(device))->Release(device);
637 IOObjectRelease(deviceIterator);
642 static int darwin_open (struct libusb_device_handle *dev_handle) {
643 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
644 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
645 usb_device_t **darwin_device;
648 if (0 == dpriv->open_count) {
649 kresult = darwin_get_device (dpriv->location, &darwin_device);
651 usbi_err (HANDLE_CTX (dev_handle), "could not find device: %s", darwin_error_str (kresult));
652 return darwin_to_libusb (kresult);
655 dpriv->device = darwin_device;
657 /* try to open the device */
658 kresult = (*(dpriv->device))->USBDeviceOpenSeize (dpriv->device);
660 if (kresult != kIOReturnSuccess) {
661 usbi_err (HANDLE_CTX (dev_handle), "USBDeviceOpen: %s", darwin_error_str(kresult));
664 case kIOReturnExclusiveAccess:
665 /* it is possible to perform some actions on a device that is not open so do not return an error */
670 (*(dpriv->device))->Release (dpriv->device);
671 dpriv->device = NULL;
672 return darwin_to_libusb (kresult);
677 /* create async event source */
678 kresult = (*(dpriv->device))->CreateDeviceAsyncEventSource (dpriv->device, &priv->cfSource);
680 CFRetain (libusb_darwin_acfl);
682 /* add the cfSource to the aync run loop */
683 CFRunLoopAddSource(libusb_darwin_acfl, priv->cfSource, kCFRunLoopCommonModes);
687 /* device opened successfully */
690 /* create a file descriptor for notifications */
693 /* set the pipe to be non-blocking */
694 fcntl (priv->fds[1], F_SETFD, O_NONBLOCK);
696 usbi_add_pollfd(HANDLE_CTX(dev_handle), priv->fds[0], POLLIN);
698 usbi_info (HANDLE_CTX (dev_handle), "device open for access");
703 static void darwin_close (struct libusb_device_handle *dev_handle) {
704 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
705 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
709 if (dpriv->open_count == 0) {
710 /* something is probably very wrong if this is the case */
711 usbi_err (HANDLE_CTX (dev_handle), "Close called on a device that was not open!\n");
717 /* make sure all interfaces are released */
718 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
719 if (dev_handle->claimed_interfaces & (1 << i))
720 libusb_release_interface (dev_handle, i);
722 if (0 == dpriv->open_count) {
724 /* delete the device's async event source */
725 if (priv->cfSource) {
726 CFRunLoopRemoveSource (libusb_darwin_acfl, priv->cfSource, kCFRunLoopDefaultMode);
727 CFRelease (priv->cfSource);
730 /* close the device */
731 kresult = (*(dpriv->device))->USBDeviceClose(dpriv->device);
733 /* Log the fact that we had a problem closing the file, however failing a
734 * close isn't really an error, so return success anyway */
735 usbi_err (HANDLE_CTX (dev_handle), "USBDeviceClose: %s", darwin_error_str(kresult));
739 kresult = (*(dpriv->device))->Release(dpriv->device);
741 /* Log the fact that we had a problem closing the file, however failing a
742 * close isn't really an error, so return success anyway */
743 usbi_err (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult));
746 dpriv->device = NULL;
749 /* file descriptors are maintained per-instance */
750 usbi_remove_pollfd (HANDLE_CTX (dev_handle), priv->fds[0]);
751 close (priv->fds[1]);
752 close (priv->fds[0]);
754 priv->fds[0] = priv->fds[1] = -1;
757 static int darwin_get_configuration(struct libusb_device_handle *dev_handle, int *config) {
758 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
760 *config = (int) dpriv->active_config;
765 static int darwin_set_configuration(struct libusb_device_handle *dev_handle, int config) {
766 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
770 /* Setting configuration will invalidate the interface, so we need
771 to reclaim it. First, dispose of existing interfaces, if any. */
772 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
773 if (dev_handle->claimed_interfaces & (1 << i))
774 darwin_release_interface (dev_handle, i);
776 kresult = (*(dpriv->device))->SetConfiguration (dpriv->device, config);
777 if (kresult != kIOReturnSuccess)
778 return darwin_to_libusb (kresult);
780 /* Reclaim any interfaces. */
781 for (i = 0 ; i < USB_MAXINTERFACES ; i++)
782 if (dev_handle->claimed_interfaces & (1 << i))
783 darwin_claim_interface (dev_handle, i);
785 dpriv->active_config = config;
790 static int darwin_get_interface (usb_device_t **darwin_device, uint8_t ifc, io_service_t *usbInterfacep) {
791 IOUSBFindInterfaceRequest request;
792 uint8_t current_interface;
793 kern_return_t kresult;
794 io_iterator_t interface_iterator;
796 *usbInterfacep = IO_OBJECT_NULL;
798 /* Setup the Interface Request */
799 request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
800 request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
801 request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
802 request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
804 kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
808 for ( current_interface = 0 ; current_interface <= ifc ; current_interface++ ) {
809 *usbInterfacep = IOIteratorNext(interface_iterator);
810 if (current_interface != ifc)
811 (void) IOObjectRelease (*usbInterfacep);
814 /* done with the interface iterator */
815 IOObjectRelease(interface_iterator);
820 static int get_endpoints (struct libusb_device_handle *dev_handle, int iface) {
821 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
823 /* current interface */
824 struct __darwin_interface *cInterface = &priv->interfaces[iface];
826 kern_return_t kresult;
828 u_int8_t numep, direction, number;
829 u_int8_t dont_care1, dont_care3;
830 u_int16_t dont_care2;
833 usbi_info (HANDLE_CTX (dev_handle), "building table of endpoints.");
835 /* retrieve the total number of endpoints on this interface */
836 kresult = (*(cInterface->interface))->GetNumEndpoints(cInterface->interface, &numep);
838 usbi_err (HANDLE_CTX (dev_handle), "can't get number of endpoints for interface: %s", darwin_error_str(kresult));
839 return darwin_to_libusb (kresult);
842 /* iterate through pipe references */
843 for (i = 1 ; i <= numep ; i++) {
844 kresult = (*(cInterface->interface))->GetPipeProperties(cInterface->interface, i, &direction, &number, &dont_care1,
845 &dont_care2, &dont_care3);
847 if (kresult != kIOReturnSuccess) {
848 usbi_err (HANDLE_CTX (dev_handle), "error getting pipe information for pipe %d: %s", i, darwin_error_str(kresult));
850 return darwin_to_libusb (kresult);
853 usbi_info (HANDLE_CTX (dev_handle), "interface: %i pipe %i: dir: %i number: %i", iface, i, direction, number);
855 cInterface->endpoint_addrs[i - 1] = ((direction << 7 & LIBUSB_ENDPOINT_DIR_MASK) | (number & LIBUSB_ENDPOINT_ADDRESS_MASK));
858 cInterface->num_endpoints = numep;
863 static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface) {
864 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
865 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
866 io_service_t usbInterface = IO_OBJECT_NULL;
868 IOCFPlugInInterface **plugInInterface = NULL;
871 /* current interface */
872 struct __darwin_interface *cInterface = &priv->interfaces[iface];
874 kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
875 if (kresult != kIOReturnSuccess)
876 return darwin_to_libusb (kresult);
878 /* make sure we have an interface */
879 if (!usbInterface && dpriv->first_config != 0) {
880 usbi_info (HANDLE_CTX (dev_handle), "no interface found; setting configuration: %d", dpriv->first_config);
882 /* set the configuration */
883 kresult = darwin_set_configuration (dev_handle, dpriv->first_config);
884 if (kresult != LIBUSB_SUCCESS) {
885 usbi_err (HANDLE_CTX (dev_handle), "could not set configuration");
889 kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
891 usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult));
892 return darwin_to_libusb (kresult);
897 usbi_err (HANDLE_CTX (dev_handle), "interface not found");
898 return LIBUSB_ERROR_NOT_FOUND;
901 /* get an interface to the device's interface */
902 kresult = IOCreatePlugInInterfaceForService (usbInterface, kIOUSBInterfaceUserClientTypeID,
903 kIOCFPlugInInterfaceID, &plugInInterface, &score);
905 usbi_err (HANDLE_CTX (dev_handle), "IOCreatePlugInInterfaceForService: %s", darwin_error_str(kresult));
906 return darwin_to_libusb (kresult);
909 if (!plugInInterface) {
910 usbi_err (HANDLE_CTX (dev_handle), "plugin interface not found");
911 return LIBUSB_ERROR_NOT_FOUND;
914 /* ignore release error */
915 (void)IOObjectRelease (usbInterface);
917 /* Do the actual claim */
918 kresult = (*plugInInterface)->QueryInterface(plugInInterface,
919 CFUUIDGetUUIDBytes(kIOUSBInterfaceInterfaceID),
920 (LPVOID)&cInterface->interface);
921 if (kresult || !cInterface->interface) {
922 usbi_err (HANDLE_CTX (dev_handle), "QueryInterface: %s", darwin_error_str(kresult));
923 return darwin_to_libusb (kresult);
926 /* We no longer need the intermediate plug-in */
927 (*plugInInterface)->Release(plugInInterface);
929 /* claim the interface */
930 kresult = (*(cInterface->interface))->USBInterfaceOpen(cInterface->interface);
932 usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceOpen: %s", darwin_error_str(kresult));
933 return darwin_to_libusb (kresult);
936 /* update list of endpoints */
937 kresult = get_endpoints (dev_handle, iface);
939 /* this should not happen */
940 darwin_release_interface (dev_handle, iface);
941 usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table");
945 cInterface->cfSource = NULL;
947 /* create async event source */
948 kresult = (*(cInterface->interface))->CreateInterfaceAsyncEventSource (cInterface->interface, &cInterface->cfSource);
949 if (kresult != kIOReturnSuccess) {
950 usbi_err (HANDLE_CTX (dev_handle), "could not create async event source");
952 /* can't continue without an async event source */
953 (void)darwin_release_interface (dev_handle, iface);
955 return darwin_to_libusb (kresult);
958 /* add the cfSource to the async thread's run loop */
959 CFRunLoopAddSource(libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
961 usbi_info (HANDLE_CTX (dev_handle), "interface opened");
966 static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface) {
967 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
970 /* current interface */
971 struct __darwin_interface *cInterface = &priv->interfaces[iface];
973 /* Check to see if an interface is open */
974 if (!cInterface->interface)
975 return LIBUSB_SUCCESS;
977 /* clean up endpoint data */
978 cInterface->num_endpoints = 0;
980 /* delete the interface's async event source */
981 if (cInterface->cfSource) {
982 CFRunLoopRemoveSource (libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
983 CFRelease (cInterface->cfSource);
986 kresult = (*(cInterface->interface))->USBInterfaceClose(cInterface->interface);
988 usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceClose: %s", darwin_error_str(kresult));
990 kresult = (*(cInterface->interface))->Release(cInterface->interface);
991 if (kresult != kIOReturnSuccess)
992 usbi_err (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult));
994 cInterface->interface = IO_OBJECT_NULL;
996 return darwin_to_libusb (kresult);
999 static int darwin_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) {
1000 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1003 /* current interface */
1004 struct __darwin_interface *cInterface = &priv->interfaces[iface];
1006 if (!cInterface->interface)
1007 return LIBUSB_ERROR_NO_DEVICE;
1009 kresult = (*(cInterface->interface))->SetAlternateInterface (cInterface->interface, altsetting);
1010 if (kresult != kIOReturnSuccess)
1011 darwin_reset_device (dev_handle);
1013 /* update list of endpoints */
1014 kresult = get_endpoints (dev_handle, iface);
1016 /* this should not happen */
1017 darwin_release_interface (dev_handle, iface);
1018 usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table");
1022 return darwin_to_libusb (kresult);
1025 static int darwin_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) {
1026 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
1028 /* current interface */
1029 struct __darwin_interface *cInterface;
1030 uint8_t pipeRef, iface;
1033 /* determine the interface/endpoint to use */
1034 if (ep_to_pipeRef (dev_handle, endpoint, &pipeRef, &iface) != 0) {
1035 usbi_err (HANDLE_CTX (dev_handle), "endpoint not found on any open interface");
1037 return LIBUSB_ERROR_NOT_FOUND;
1040 cInterface = &priv->interfaces[iface];
1042 #if (InterfaceVersion < 190)
1043 kresult = (*(cInterface->interface))->ClearPipeStall(cInterface->interface, pipeRef);
1045 /* newer versions of darwin support clearing additional bits on the device's endpoint */
1046 kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
1049 usbi_err (HANDLE_CTX (dev_handle), "ClearPipeStall: %s", darwin_error_str (kresult));
1051 return darwin_to_libusb (kresult);
1054 static int darwin_reset_device(struct libusb_device_handle *dev_handle) {
1055 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
1058 kresult = (*(dpriv->device))->ResetDevice (dpriv->device);
1060 usbi_err (HANDLE_CTX (dev_handle), "ResetDevice: %s", darwin_error_str (kresult));
1062 return darwin_to_libusb (kresult);
1065 static int darwin_kernel_driver_active(struct libusb_device_handle *dev_handle, int interface) {
1066 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
1067 io_service_t usbInterface;
1071 kresult = darwin_get_interface (dpriv->device, interface, &usbInterface);
1073 usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult));
1075 return darwin_to_libusb (kresult);
1078 driver = IORegistryEntryCreateCFProperty (usbInterface, kIOBundleIdentifierKey, kCFAllocatorDefault, 0);
1079 IOObjectRelease (usbInterface);
1091 /* attaching/detaching kernel drivers is not currently supported (maybe in the future?) */
1092 static int darwin_attach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) {
1093 return LIBUSB_ERROR_NOT_SUPPORTED;
1096 static int darwin_detach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) {
1097 return LIBUSB_ERROR_NOT_SUPPORTED;
1100 static void darwin_destroy_device(struct libusb_device *dev) {
1103 static int submit_bulk_transfer(struct usbi_transfer *itransfer) {
1104 struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1105 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
1108 uint8_t is_read; /* 0 = we're reading, 1 = we're writing */
1109 uint8_t transferType;
1110 /* None of the values below are used in libusb for bulk transfers */
1111 uint8_t direction, number, interval, pipeRef, iface;
1112 uint16_t maxPacketSize;
1114 struct __darwin_interface *cInterface;
1116 /* are we reading or writing? */
1117 is_read = transfer->endpoint & LIBUSB_ENDPOINT_IN;
1119 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) {
1120 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1122 return LIBUSB_ERROR_NOT_FOUND;
1125 cInterface = &priv->interfaces[iface];
1127 (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
1128 &transferType, &maxPacketSize, &interval);
1130 /* submit the request */
1131 /* timeouts are unavailable on interrupt endpoints */
1132 if (transferType == kUSBInterrupt) {
1134 ret = (*(cInterface->interface))->ReadPipeAsync(cInterface->interface, pipeRef, transfer->buffer,
1135 transfer->length, darwin_async_io_callback, itransfer);
1137 ret = (*(cInterface->interface))->WritePipeAsync(cInterface->interface, pipeRef, transfer->buffer,
1138 transfer->length, darwin_async_io_callback, itransfer);
1140 itransfer->flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1143 ret = (*(cInterface->interface))->ReadPipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
1144 transfer->length, transfer->timeout, transfer->timeout,
1145 darwin_async_io_callback, (void *)itransfer);
1147 ret = (*(cInterface->interface))->WritePipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
1148 transfer->length, transfer->timeout, transfer->timeout,
1149 darwin_async_io_callback, (void *)itransfer);
1153 usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", is_read ? "In" : "Out",
1154 darwin_error_str(ret), ret);
1156 return darwin_to_libusb (ret);
1159 static int submit_iso_transfer(struct usbi_transfer *itransfer) {
1160 struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1161 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1162 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
1165 uint8_t is_read; /* 0 = we're writing, 1 = we're reading */
1166 uint8_t pipeRef, iface;
1168 AbsoluteTime atTime;
1171 struct __darwin_interface *cInterface;
1173 /* are we reading or writing? */
1174 is_read = transfer->endpoint & LIBUSB_ENDPOINT_IN;
1176 /* construct an array of IOUSBIsocFrames */
1177 tpriv->isoc_framelist = (IOUSBIsocFrame*) calloc (transfer->num_iso_packets, sizeof(IOUSBIsocFrame));
1178 if (!tpriv->isoc_framelist)
1179 return LIBUSB_ERROR_NO_MEM;
1181 /* copy the frame list from the libusb descriptor (the structures differ only is member order) */
1182 for (i = 0 ; i < transfer->num_iso_packets ; i++)
1183 tpriv->isoc_framelist[i].frReqCount = transfer->iso_packet_desc[i].length;
1185 /* determine the interface/endpoint to use */
1186 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) {
1187 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1189 return LIBUSB_ERROR_NOT_FOUND;
1192 cInterface = &priv->interfaces[iface];
1194 /* Last but not least we need the bus frame number */
1195 kresult = (*(cInterface->interface))->GetBusFrameNumber(cInterface->interface, &frame, &atTime);
1197 usbi_err (TRANSFER_CTX (transfer), "failed to get bus frame number: %d", kresult);
1198 free(tpriv->isoc_framelist);
1199 tpriv->isoc_framelist = NULL;
1201 return darwin_to_libusb (kresult);
1204 /* schedule for a frame a little in the future */
1207 /* submit the request */
1209 kresult = (*(cInterface->interface))->ReadIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
1210 transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
1213 kresult = (*(cInterface->interface))->WriteIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
1214 transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
1217 if (kresult != kIOReturnSuccess) {
1218 usbi_err (TRANSFER_CTX (transfer), "isochronous transfer failed (dir: %s): %s", is_read ? "In" : "Out",
1219 darwin_error_str(kresult));
1220 free (tpriv->isoc_framelist);
1221 tpriv->isoc_framelist = NULL;
1224 return darwin_to_libusb (kresult);
1227 static int submit_control_transfer(struct usbi_transfer *itransfer) {
1228 struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1229 struct libusb_control_setup *setup = (struct libusb_control_setup *) transfer->buffer;
1230 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)transfer->dev_handle->dev->os_priv;
1231 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1235 bzero(&tpriv->req, sizeof(tpriv->req));
1237 /* IOUSBDeviceInterface expects the request in cpu endianess */
1238 tpriv->req.bmRequestType = setup->bmRequestType;
1239 tpriv->req.bRequest = setup->bRequest;
1240 /* these values should be in bus order from libusb_fill_control_setup */
1241 tpriv->req.wValue = OSSwapLittleToHostInt16 (setup->wValue);
1242 tpriv->req.wIndex = OSSwapLittleToHostInt16 (setup->wIndex);
1243 tpriv->req.wLength = OSSwapLittleToHostInt16 (setup->wLength);
1244 /* data is stored after the libusb control block */
1245 tpriv->req.pData = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE;
1246 tpriv->req.completionTimeout = transfer->timeout;
1247 tpriv->req.noDataTimeout = transfer->timeout;
1249 itransfer->flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT;
1251 /* all transfers in libusb-1.0 are async */
1252 kresult = (*(dpriv->device))->DeviceRequestAsyncTO(dpriv->device, &(tpriv->req), darwin_async_io_callback, itransfer);
1254 if (kresult != kIOReturnSuccess)
1255 usbi_err (TRANSFER_CTX (transfer), "control request failed: %s", darwin_error_str(kresult));
1257 return darwin_to_libusb (kresult);
1260 static int darwin_submit_transfer(struct usbi_transfer *itransfer) {
1261 struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1263 switch (transfer->type) {
1264 case LIBUSB_TRANSFER_TYPE_CONTROL:
1265 return submit_control_transfer(itransfer);
1266 case LIBUSB_TRANSFER_TYPE_BULK:
1267 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
1268 return submit_bulk_transfer(itransfer);
1269 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
1270 return submit_iso_transfer(itransfer);
1272 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1273 return LIBUSB_ERROR_INVALID_PARAM;
1277 static int cancel_control_transfer(struct usbi_transfer *itransfer) {
1278 struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1279 struct darwin_device_priv *dpriv = (struct darwin_device_priv *)transfer->dev_handle->dev->os_priv;
1282 usbi_info (ITRANSFER_CTX (itransfer), "WARNING: aborting all transactions control pipe");
1284 kresult = (*(dpriv->device))->USBDeviceAbortPipeZero (dpriv->device);
1286 return darwin_to_libusb (kresult);
1289 static int darwin_abort_transfers (struct usbi_transfer *itransfer) {
1290 struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1291 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
1292 struct __darwin_interface *cInterface;
1293 uint8_t pipeRef, iface;
1296 if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) {
1297 usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
1299 return LIBUSB_ERROR_NOT_FOUND;
1302 cInterface = &priv->interfaces[iface];
1304 usbi_info (ITRANSFER_CTX (itransfer), "WARNING: aborting all transactions on interface %d pipe %d", iface, pipeRef);
1306 /* abort transactions */
1307 (*(cInterface->interface))->AbortPipe (cInterface->interface, pipeRef);
1309 usbi_info (ITRANSFER_CTX (itransfer), "calling clear pipe stall to clear the data toggle bit");
1311 /* clear the data toggle bit */
1312 #if (InterfaceVersion < 190)
1313 kresult = (*(cInterface->interface))->ClearPipeStall(cInterface->interface, pipeRef);
1315 /* newer versions of darwin support clearing additional bits on the device's endpoint */
1316 kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
1319 return darwin_to_libusb (kresult);
1322 static int darwin_cancel_transfer(struct usbi_transfer *itransfer) {
1323 struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1325 switch (transfer->type) {
1326 case LIBUSB_TRANSFER_TYPE_CONTROL:
1327 return cancel_control_transfer(itransfer);
1328 case LIBUSB_TRANSFER_TYPE_BULK:
1329 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
1330 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
1331 return darwin_abort_transfers (itransfer);
1333 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1334 return LIBUSB_ERROR_INVALID_PARAM;
1338 static void darwin_clear_transfer_priv (struct usbi_transfer *itransfer) {
1339 struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1340 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1342 if (transfer->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS && tpriv->isoc_framelist) {
1343 free (tpriv->isoc_framelist);
1344 tpriv->isoc_framelist = NULL;
1348 static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0) {
1349 struct usbi_transfer *itransfer = (struct usbi_transfer *)refcon;
1350 struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1351 struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
1354 usbi_info (ITRANSFER_CTX (itransfer), "an async io operation has completed");
1356 /* send a completion message to the device's file descriptor */
1357 message = MESSAGE_ASYNC_IO_COMPLETE;
1358 write (priv->fds[1], &message, sizeof (message));
1359 write (priv->fds[1], &itransfer, sizeof (itransfer));
1360 write (priv->fds[1], &result, sizeof (IOReturn));
1361 write (priv->fds[1], &arg0, sizeof (UInt32));
1364 static int darwin_transfer_status (struct usbi_transfer *itransfer, kern_return_t result) {
1365 if (itransfer->flags & USBI_TRANSFER_TIMED_OUT)
1366 result = kIOUSBTransactionTimeout;
1369 case kIOReturnUnderrun:
1370 case kIOReturnSuccess:
1371 return LIBUSB_TRANSFER_COMPLETED;
1372 case kIOReturnAborted:
1373 return LIBUSB_TRANSFER_CANCELLED;
1374 case kIOUSBPipeStalled:
1375 usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: pipe is stalled");
1376 return LIBUSB_TRANSFER_STALL;
1377 case kIOReturnOverrun:
1378 usbi_err (ITRANSFER_CTX (itransfer), "transfer error: data overrun");
1379 return LIBUSB_TRANSFER_OVERFLOW;
1380 case kIOUSBTransactionTimeout:
1381 usbi_err (ITRANSFER_CTX (itransfer), "transfer error: timed out");
1382 itransfer->flags |= USBI_TRANSFER_TIMED_OUT;
1383 return LIBUSB_TRANSFER_TIMED_OUT;
1385 usbi_err (ITRANSFER_CTX (itransfer), "transfer error: %s (value = 0x%08x)", darwin_error_str (result), result);
1386 return LIBUSB_TRANSFER_ERROR;
1390 static void darwin_handle_callback (struct usbi_transfer *itransfer, kern_return_t result, UInt32 io_size) {
1391 struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
1392 struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
1393 int isIsoc = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS == transfer->type;
1394 int isBulk = LIBUSB_TRANSFER_TYPE_BULK == transfer->type;
1395 int isControl = LIBUSB_TRANSFER_TYPE_CONTROL == transfer->type;
1396 int isInterrupt = LIBUSB_TRANSFER_TYPE_INTERRUPT == transfer->type;
1399 if (!isIsoc && !isBulk && !isControl && !isInterrupt) {
1400 usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
1404 usbi_info (ITRANSFER_CTX (itransfer), "handling %s completion with kernel status %d",
1405 isControl ? "control" : isBulk ? "bulk" : isIsoc ? "isoc" : "interrupt", result);
1407 if (kIOReturnSuccess == result || kIOReturnUnderrun == result) {
1408 if (isIsoc && tpriv->isoc_framelist) {
1409 /* copy isochronous results back */
1411 for (i = 0; i < transfer->num_iso_packets ; i++) {
1412 struct libusb_iso_packet_descriptor *lib_desc = &transfer->iso_packet_desc[i];
1413 lib_desc->status = darwin_to_libusb (tpriv->isoc_framelist[i].frStatus);
1414 lib_desc->actual_length = tpriv->isoc_framelist[i].frActCount;
1417 itransfer->transferred += io_size;
1420 /* it is ok to handle cancelled transfers without calling usbi_handle_transfer_cancellation (we catch timeout transfers) */
1421 usbi_handle_transfer_completion (itransfer, darwin_transfer_status (itransfer, result));
1424 static int op_handle_events(struct libusb_context *ctx, struct pollfd *fds, nfds_t nfds, int num_ready) {
1425 struct usbi_transfer *itransfer;
1431 usbi_mutex_lock(&ctx->open_devs_lock);
1432 for (i = 0; i < nfds && num_ready > 0; i++) {
1433 struct pollfd *pollfd = &fds[i];
1434 struct libusb_device_handle *handle;
1435 struct darwin_device_handle_priv *hpriv = NULL;
1437 usbi_info (ctx, "checking fd %i with revents = %x", fds[i], pollfd->revents);
1439 if (!pollfd->revents)
1443 list_for_each_entry(handle, &ctx->open_devs, list, struct libusb_device_handle) {
1444 hpriv = (struct darwin_device_handle_priv *)handle->os_priv;
1445 if (hpriv->fds[0] == pollfd->fd)
1449 if (!(pollfd->revents & POLLERR)) {
1450 ret = read (hpriv->fds[0], &message, sizeof (message));
1451 if (ret < sizeof (message))
1454 /* could not poll the device-- response is to delete the device (this seems a little heavy-handed) */
1455 message = MESSAGE_DEVICE_GONE;
1458 case MESSAGE_DEVICE_GONE:
1459 /* remove the device's async port from the runloop */
1460 if (hpriv->cfSource) {
1461 if (libusb_darwin_acfl)
1462 CFRunLoopRemoveSource (libusb_darwin_acfl, hpriv->cfSource, kCFRunLoopDefaultMode);
1463 CFRelease (hpriv->cfSource);
1464 hpriv->cfSource = NULL;
1467 usbi_remove_pollfd(HANDLE_CTX(handle), hpriv->fds[0]);
1468 usbi_handle_disconnect(handle);
1470 /* done with this device */
1472 case MESSAGE_ASYNC_IO_COMPLETE:
1473 read (hpriv->fds[0], &itransfer, sizeof (itransfer));
1474 read (hpriv->fds[0], &kresult, sizeof (IOReturn));
1475 read (hpriv->fds[0], &io_size, sizeof (UInt32));
1477 darwin_handle_callback (itransfer, kresult, io_size);
1480 usbi_err (ctx, "unknown message received from device pipe");
1484 usbi_mutex_unlock(&ctx->open_devs_lock);
1489 static int darwin_clock_gettime(int clk_id, struct timespec *tp) {
1490 mach_timespec_t sys_time;
1491 clock_serv_t clock_ref;
1494 case USBI_CLOCK_REALTIME:
1495 /* CLOCK_REALTIME represents time since the epoch */
1496 host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &clock_ref);
1498 case USBI_CLOCK_MONOTONIC:
1499 /* use system boot time as reference for the monotonic clock */
1500 host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &clock_ref);
1503 return LIBUSB_ERROR_INVALID_PARAM;
1506 clock_get_time (clock_ref, &sys_time);
1508 tp->tv_sec = sys_time.tv_sec;
1509 tp->tv_nsec = sys_time.tv_nsec;
1514 const struct usbi_os_backend darwin_backend = {
1516 .init = darwin_init,
1517 .exit = darwin_exit,
1518 .get_device_list = darwin_get_device_list,
1519 .get_device_descriptor = darwin_get_device_descriptor,
1520 .get_active_config_descriptor = darwin_get_active_config_descriptor,
1521 .get_config_descriptor = darwin_get_config_descriptor,
1523 .open = darwin_open,
1524 .close = darwin_close,
1525 .get_configuration = darwin_get_configuration,
1526 .set_configuration = darwin_set_configuration,
1527 .claim_interface = darwin_claim_interface,
1528 .release_interface = darwin_release_interface,
1530 .set_interface_altsetting = darwin_set_interface_altsetting,
1531 .clear_halt = darwin_clear_halt,
1532 .reset_device = darwin_reset_device,
1534 .kernel_driver_active = darwin_kernel_driver_active,
1535 .detach_kernel_driver = darwin_detach_kernel_driver,
1536 .attach_kernel_driver = darwin_attach_kernel_driver,
1538 .destroy_device = darwin_destroy_device,
1540 .submit_transfer = darwin_submit_transfer,
1541 .cancel_transfer = darwin_cancel_transfer,
1542 .clear_transfer_priv = darwin_clear_transfer_priv,
1544 .handle_events = op_handle_events,
1546 .clock_gettime = darwin_clock_gettime,
1548 .device_priv_size = sizeof(struct darwin_device_priv),
1549 .device_handle_priv_size = sizeof(struct darwin_device_handle_priv),
1550 .transfer_priv_size = sizeof(struct darwin_transfer_priv),
1551 .add_iso_packet_size = 0,