site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com This might not be appropriate. In fact, it might not be appropriate to use an IOKit approach at all. -- Terry Hi John, 2. attach is more appropriate. http://developer.apple.com/documentation/DeviceDrivers/Conceptual/IOKitFunda... Dan Le 23 Jun 2006 à 5:27 AM, John Dalgliesh a écrit : Hi All, I am writing a driver which creates virtual serial ports in /dev. Extract from doc for IORegistyEntry::attachToParent: "This is the usual method of entering an entry into the registry. " Thaks in advance, Pavan. {P^/ _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/markarian%40apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/tlambert%40apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... Pavan appears to be trying to create a pseudo-device that looks like a serial port in /dev. We do this already with the xnu/bsd/kern/tty_pty.c driver, which is the pty device driver (and not an IOKit device driver). For an IOKit device driver, his problem isn't going to be writing the code, so much as it is getting the "Driver Matching and Loading" of the document that Dan references to actually trigger. There are a couple of ways to do this without real hardware, but Active matching isn't going to work, since there's no physically real unclaimed hardware that the driver is trying to talk to in order to trigger it. No trigger = no device node created. There don't seem to be any good references on writing IOKit pseudo- devices, other than the source code for several that we've published through OpenDarwin. On Jun 23, 2006, at 7:03 AM, Dan Markarian wrote: 2. attachToParent On Fri, 23 Jun 2006, Pavan Chebbi wrote: When I call registerService() on my object of class which is inherited from IOSerialStreamSync(), this is what the error is given as. How do you create those objects? Have you put them through all the usual states of an IOService/IORegistryEntry object? In brief this is: 1. init 2. attachToParent 3. start (4. usu from start: registerService) The docs in the IORegisterEntry.h and IOService.h files may be helpful (and there are probably even better docs about this lifecycle but I'm sure you can go and search for those yourself :) Requesting you to provide some pointers/reasons as to why this error is coming up because of which I am not able see the nodes created by my driver in /dev. This email sent to markarian@apple.com This email sent to tlambert@apple.com This email sent to site_archiver@lists.apple.com