Hi, We have PCI storage device for which we use Kernel Driver. In kernel driver development we use getDeviceMemoryWithIndex to get IODeviceMemory and then we map it using IODeviceMemory->map then we fetch virtual memory using IOMemoryMap->getVirtualAddress. So my query is what's alternative for this in PCIDriverKit for developing DEXT. I found _CopyDeviceMemoryWithIndex api which seems similar to getDeviceMemoryWithIndex. But when I used this api then this is failing with error: 0xe00002cd (Device Not Open.) I'm doubting this failure because of IOPCIDevice->Open failure for which I have already created another thread [https://developer.apple.com/forums/thread/661711] to discuss this issue. There is no sample code available so I'm just following WWDC2020 presentation for Modernize PCI and SCSI drivers with DriverKit. My driver is loading and unloading on device connect/disconnect and able to fetch VID and DEVID from PCI registers. I'm using IOPCIDevice as provider and IOPCIMatch for driver matching. Any help or suggestion is really appreciated. Thanks

We're invited to write PCI drivers for iPad, but there's no capability for PCI Driver Kit in Xcode and a com.apple.developer.driverkit.transport.pci key in your entitlements does not find its way into your embedded.provisionprofile with Automatically Manage Signing nor can you manually add it in the appID portal, because it's not there. Huh?

hi everyone, so i am wondering what else i must do after my device successfully completes the CoreAudio initialisation process? it seems ready to roll: but when i play something in itunes i don't hear anything. the slider moves as you'd expect. i compared some properties of the device to the headphone jack and noticed the latter maps to an output device (my headphones). in the case of this sound card, it's just a jack. is there something simple i'm missing? lastly, i noticed that the engine is limited to approximately 8 controls. i couldn't add the full 8 channels plus an 'allchannels' volume control, as you can see on the right panel of the second image. this is not due to a programming error. is it possible that the designers were stingy and used exactly 8 bits to describe the number of each kind of control on an engine (i.e. 8 toggles/8 selectors/8level controls)?

Dear all we try to test a capture card in M1 and Intel Mac book . we find some different . insert thunderbolt device(pcie device). open OBS and open the video. Unplug the device without close the OBS(APP). re-plug the device . we find M1 can't find the Thunderbolt drive . thunderbolt port are block, we had to restart the pc and fix the problem . but intel Mac book have not the problem . if I close these app, and then Unplug the device , then we re-plug it , we find M1 And Intel MAC book can work. we summary it M1 have a thunderbolt block problem when app run to unplug the thunderbolt . Intel Mac have not the problem . I want to know how to fix the problem.

My company has been developing a DriverKit Extension for our ThunderBolt attached devices. The dext is part of a set of components developed to replace a complex kext. Our testing has gone well on Intel based machines, but I seem to be able to cause kernel panics on my M1 Mac Mini when running some tests from an application that sends commands to the dext. The crashes aren't immediate; they happen apparently when the device wakes from sleeping. If I don't enable some particular capabilities on the devices the code works fine. Unfortunately they are LLC crashes and I have no way to debug them. Has anyone dealt with something like this? panic(cpu 6 caller 0xfffffe001f038b94): "LLC Bus error from cpu2: FAR=0x600102068 LLC_ERR_STS/ADR/INF=0x11000ffc00000080/0x4300040600102068/0x5 addr=0x600102068 cmd=0x18(acc_cifl2c_cmd_rd_ld)" @AppleFireStormErrorHandler.cpp:424 Debugger message: panic Memory ID: 0x6 OS release type: User OS version: 21E258 Kernel version: Darwin Kernel Version 21.4.0: Fri Mar 18 00:47:26 PDT 2022; root:xnu-8020.101.4~15/RELEASE_ARM64_T8101 Fileset Kernelcache UUID: E642C8E63C1D004A6B6639342D386514 Kernel UUID: 79A2DE0A-5FBB-32B8-B226-9D5D3F5C25A4 iBoot version: iBoot-7459.101.3 secure boot?: YES Paniclog version: 13 KernelCache slide: 0x0000000016758000 KernelCache base: 0xfffffe001d75c000 Kernel slide: 0x0000000016ef8000 Kernel text base: 0xfffffe001defc000 Kernel text exec slide: 0x0000000016fe0000 Kernel text exec base: 0xfffffe001dfe4000

There is currently no way to "Bring your driver to iPad with DriverKit" because it's impossible to develop a driver because developers can neither deploy to the device nor run there because there is no way to procure development provisioning profiles with the required entitlements for actual hardware (USB, PCI). I bought an M1 iPad just to test this alleged new capability and the only thing it's good for so far is theoretically transferring files quickly or attaching some kind of ethernet dongle. My 1 month no-questions-asked returns window is going to close soon! FB10152280 FB10244398 FB10244627 FB10160665 FB10152361 FB10160793 FB10152210 FB10160567 FB10244046 FB10427776

I read the doc of installing system extensions https://developer.apple.com/documentation/systemextensions/installing_system_extensions_and_drivers?language=objc , but actually our product is a framework and installed by .pkg. I/O Kit kext is installed by script in .pkg. So I meet a problem ：how to install DriverKit dext by script?

Was wondering if we are getting any closer to seeing some PCIDriverKit Example code. Thank you.

Looking for Driverkit examples, I see a reference to this page.. https://developer.apple.com/documentation/networkingdriverkit/connecting_a_network_driver. However the page is not found. Any idea when this example will be available?