IOUSBDeviceFamily

IOUSBDeviceFamily is a kernel-extension for communication of device to the host via the USB cable. This is only an abstract extension. The actual driver implementation is in AppleSynopsysOTG2.

Methods

Selector	Action	Input	Output
0	open	void* _arg	-
1	close	-	-
2	setDescription	char description[*]	-
3	setClassForAlternateSetting	uint8_t class_, uint8_t _unused	-
4	setSubClassForAlternateSetting	uint8_t subclass, uint8_t _unused	-
5	setProtocolForAlternateSetting	uint8_t protocol, uint8_t _unused	-
6	appendStandardClassOrVendorDescriptor	unsigned long ?, unsigned long flags; uint8_t descriptor[*]	-
7	appendNonStandardClassOrVendorDescriptor	unsigned long ?, unsigned long flags; uint8_t descriptor[*]	-
8	setClassCommandCallbacks (async)	bool wakeOnRequest, bool hasCallback2	-
9	?	bool handledRequest, size_t dataLength, uint64_t mapToken, IOReturn status	-
10	createPipe	int type, int direction, int maxPacketSize, int interval, int ?, int configIndex	void* pipe
11	commitConfiguration	-	-
12	setAlternateSetting	uint8_t configIndex	-
13	readPipe (may be async)	void* pipe, uint64_t mapToken, long capacity	long length
14	writePipe (may be async)	?	?
15	stallPipe	void* pipe	-
16	abortPipe	void* pipe	-
17	getPipeCurrentMaxPacketSize	void* pipe	int packetSize
18	createData	int64_t length	uint8_t* dataPtr, int capacity, uint64_t mapToken
19	releaseDataCallback	?	-
20	isActivated	-	bool activated , bool isHighSpeed

To use setClassCommandCallbacks, you must issue the call asynchronously, and put the callback function in its reference argument, e.g.

void callback(void* refcon, IOReturn result, size_t* arguments) {
    ...
}

uint64_t refs[3];
refs[1] = (uint64_t) callback;
refs[2] = (uint64_t) refcon;
IOConnectCallAsyncMethod(connection, 8, wakePort, refs, 3, ...);

The same applies to calling readPipe asynchronously, but the 3rd argument becomes "size_t dataLength".

IOUSBDeviceLib

IOUSBDeviceLib is a userland COM plug-in for accessing the IOUSBDeviceInterface. The plug-in's UUID is {9E72217E-8A60-11DB-BF57-000D936D06D2}, and its interface's UUID is {EA33BA4F-8A60-11DB-84DB-000D936D06D2}.