We have a macOS application which interacts with our USB and PCI devices to perform SCSI and NVME commands on them. We use IOUSBHost, IOUSBLib and IOKitLib for USB interface and have created a custom driver to interact with PCI devices. Is there a way we can implement a similar functionality for iOS as well if we connect the cards and readers using OTG?

Hello Everyone, I am trying to create a Fake SCSI target based on SCSIControllerDriverKit.framework and inherent from IOUserSCSIParallelInterfaceController, here is the code kern_return_t IMPL(DRV_MAIN_CLASS_NAME, Start) { ... // Programmatically create a null SCSI Target SCSIDeviceIdentifier nullTargetID = 0; // Example target ID, adjust as needed ret = UserCreateTargetForID(nullTargetID, nullptr); if (ret != kIOReturnSuccess) { Log("Failed to create Null SCSI Target for ID %llu", nullTargetID); return ret; } ... } According the document UserCreateTargetForID, after creating a TargetID successfully, the framework will call the UserInitializeTargetForID() The document said: As part of the UserCreateTargetForID call, the kernel calls several APIs like UserInitializeTargetForID which run on the default dispatch queue of the dext. But after UserCreateTargetForID created, why the UserInitializeTargetForID() not be invoked automatically? Here is the part of log show init() - Start init() - End Start() - Start Start() - try 1 times UserCreateTargetForID() - Start Allocating resources for Target ID 0 UserCreateTargetForID() - End Start() - Finished. UserInitializeController() - Start - PCI vendorID: 0x14d6, deviceID: 0x626f. - BAR0: 0x1, BAR1: 0x200004. - GetBARInfo() - BAR1 - MemoryIndex: 0, Size: 262144, Type: 0. UserInitializeController() - End UserStartController() - Start - msiInterruptIndex : 0x00000000 - interruptType info is 0x00010000 - PCI Dext interrupt final value, return status info is 0x00000000 UserStartController() - End Any assistance would be greatly appreciated! Thank you in advance for your support. Best regards, Charles

I would like to know if macOS DEXT supports the following networking features: Tx/Rx Multiqueue, RSS, RSC, NS/ARP offload, PTP or packet timestamping and TSN. I couldn't find relevant documentation for these features in the Apple Developer Documentation. If they are supported, could you let me know which features are supported and how to find the corresponding official Apple documentation? Thanks

Hello Everyone, I am trying to develop a DriverKit for RAID system, using PCIDriverKit & SCSIControllerDriverKit framework. The driver can detect the Vendor ID and Device ID. But before communicating to the RAID system, I would like to simulate a virtual Volume using a memory block to talk with macOS. In the UserInitializeController(), I allocated a 512K memory for a IOBufferMemoryDescriptor* volumeBuffer, but fail to use Map() to map memory for volumeBuffer. result = ivars->volumeBuffer->Map( 0, // Options: Use default 0, // Offset: Start of the buffer ivars->volumeSize, // Length: Must not exceed buffer size 0, // Flags: Use default nullptr, // Address space: Default address space &mappedAddress // Output parameter ); Log("Memory mapped completed at address: 0x%llx", mappedAddress); // this line never run The Log for Map completed never run, just restart to run the Start() and makes this Driver re-run again and again, in the end, the driver eat out macOS's memory and system halt. Are the parameters for Map() error? or I should not put this code in UserInitializeController()? Any help is appreciated! Thanks in advance. Charles

Hi Everybody, Follow Communicating between a DriverKit extension and a client app to migrate our kext to dext. The dext might have been loaded successfully by using the command systemextensionsctl list, the dext is loaded and enabled. % sectl list 1 extension(s) --- com.apple.system_extension.driver_extension enabled active teamID bundleID (version) name [state] * * K3TDMD9Y6B com.accusys.scsidriver (1.0/1) com.accusys.scsidriver [activated enabled] We try to use the CppUserClient.cpp to communicate with the dext, but can not get the dext service. The debug message as below: Failed opening service with error: 0xe00002c7. Here is the part of CppUserClient.cpp static const char* dextIdentifier = "com.accusys.scsidriver"; kern_return_t ret = kIOReturnSuccess; io_iterator_t iterator = IO_OBJECT_NULL; io_service_t service = IO_OBJECT_NULL; ret = IOServiceGetMatchingServices(kIOMasterPortDefault, IOServiceMatching("IOUserServer"), &iterator); printf("dextIdentifier = %s\n", dextIdentifier); printf("IOServiceNameMatching return = %d\n", ret); if (ret != kIOReturnSuccess) { printf("Unable to find service for identifier with error: 0x%08x.\n", ret); PrintErrorDetails(ret); } printf("Searching for dext service...\n"); while ((service = IOIteratorNext(iterator)) != IO_OBJECT_NULL) { // Open a connection to this user client as a server to that client, and store the instance in "service" ret = IOServiceOpen(service, mach_task_self_, kIOHIDServerConnectType, &connection); if (ret == kIOReturnSuccess) { printf("\tOpened service.\n"); break; } else { printf("\tFailed opening service with error: 0x%08x.\n", ret); } IOObjectRelease(service); } IOObjectRelease(iterator); if (service == IO_OBJECT_NULL) { printf("Failed to match to device.\n"); return EXIT_FAILURE; } The console output message is dextIdentifier = com.accusys.scsidriver IOServiceNameMatching return = 0 Searching for dext service... Failed opening service with error: 0xe00002c7. Failed opening service with error: 0xe00002c7. Failed opening service with error: 0xe00002c7. Failed opening service with error: 0xe00002c7. Failed to match to device. Here is the log show message fredapp start UserInitializeController pcitest: fredapp pci vendorID: 14d6 deviceID: 626f fredapp nnnnnew configuaration read32 0x10 info: 1 fredapp nnnnnew configuaration read32 0x14 info: 80100004 fredapp new 128 before enable busmaster ReqMSGport_info 0x00000040 : fffff pcitest: fredapp 131 pci ConfigurationRead16 busmaster value 0 pcitest: fredapp 134 Enable BusMaster and IO space done...... locate 139 fredapp MemoryWrite32 function done...... fredapp new 143 after enable busmaster ReqMSGport_info 0x00000040 : 0 fredapp newwww before GetBARInfo memoryIndex1 info is: 5 fredapp GetBARInfo 1 kernel return status is: 0 fredapp GetBARInfo memoryIndex1 info is: 0 fredapp GetBARInfo barSize1 info is: 262144 fredapp GetBARInfo barType1 info is: 0 fredapp GetBARInfo result0 info is: 3758097136 fredapp GetBARInfo memoryIndex0 info is: 0 fredapp GetBARInfo barSize0 info is: 0 fredapp GetBARInfo barType0 info is: 0 pcitest: newwww fredapp againnnn test ReqMSGport info: 8 fredapp Start MPIO_Init_Prepare fredapp end MPIO_Init_Prepare. fredapp call 741 Total_memory_size: 1bb900 fredapp Start MemoryAllocationForAME_Module. fredapp IOBufferMemoryDescriptor create return status info is kIOReturnSuc fredapp IOBufferMemoryDescriptor virtualAddressSegment address info: 0x1 fredapp virtualAddressSegment length info: 0x00080000 fredapp end IOBufferMemoryDescriptor Create. fredapp dmaSpecification maxAddressBits: 0x00000000 fredapp dmaSpecification maxAddressBits: 0x00000027 fredapp IODMACommand create return status info is kIOReturnSuccess fredapp end IODMACommand Create. fredapp PrepareForDMA return status info is kIOReturnSuccess fredapp PrepareForDMA return status info is 0x00000000 fredapp Allocate memory PrepareforDMA return flags info: 0x00000003 fredapp Allocate memory PrepareforDMA return segmentsCount info: 0x00000 fredapp Allocate memory PrepareforDMA return physicalAddressSegment info: fredapp IOBufferMemoryDescriptor virtualAddressSegment address info-2: 0 fredapp verify data success init() - Finished. fredapp start UserGetDMASpecification fredapp end UserGetDMASpecification fredapp start UserMapHBAData fredapp end UserMapHBAData fredapp start UserStartController fredapp interruptType info is 0x00010000 fredapp PCI Dext interrupt final value return status info is 0x00000000 Any suggestions? Best Regards, Charles

Hi, I’m developing my own Pcie Ethernet driverkit. My Pcie Ethernet card connect on Razor Core X and connect to MacBook via thunderbolt 3. The Problem: Click Driver application and send activate system extension request, then go to System setting -> Privacy & Security, in Extension section ->click “allow” , the peripherals malfunction immediately after "allow" clicked and type in the password.I can't control all peripherals devices like touchpad, keyboard and all of thunderbolt ports. However, it can regain functionality after plugging and unplugging the device. results I expected: User approve Driver Extensions enable and all peripherals work normally and Ethernet Card works. Has anyone encountered this problem? maybe something wrong in "OSSystemExtensionRequestDelegate" but I have no idea how to fix it Please Help. My Xcode version is Version 15.3 (15E204a). Thanks