Ryan O'Connor wrote:
Hi,
This is Polonium from the irc channel (although I’m not in there all the time)
Just trying to gather what’s happening with USB support, more specifically the host controller interfaces that are required to lie below the usb device drivers.
Is there anyone currently working on this?
If not, are there any programmers who would like to solely focus on implementing, for example, a universal host controller interface for ReactOS.
While I do not know much about the topic myself, with ample resources and team members I may be able to make a good start. Anyone else interested? The specifications for the interfaces can be found on the Intel website.
Regards
Ryan O’Connor
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I have in my local tree, stubs for usbport, usbuhci, usbehci, usbohci, and usbhub I was going to wait till I got a bit more of the needed headers put together before commiting it all to SVN.
If you want to start, I would suggest reading MSDN, specifically the section regarding the USB stack in WindowsXP. There isn't alot of information there, but if you read through the USB structure definitions, you can get an idea of how usbhub connects to usbport.
I was planning to do the usbport->usbuhci part first. I don't think that it would be easy to split that work among developers yet. This is because the interface between usbport and its miniport drivers is completely undocumented. I'll be creating this as I go along.
Once usbport->usbuchi works, then someone else can take on making usbohci or usbehci if they wish. However, I'm willing to be that we will need to rework the interface between usbport and its miniports when we implement the second miniport.
I'm glad that other people want to help with USB (it is a rather large undertaking). We do have several pieces that we need (other than the controller stack). We need: -USBD.SYS -HIDPARSE.SYS -(the rest of the HID pieces in the OS) I'm sure that there is more than that...
It would be great if someone started working on those peices while I'm getting the host controller to work.
--mark