USB stack improvements GSoC - Week 5

After long period of investigation and debugging, this week I have commited first patches for review. And they make difference under 2k3 :)

About fixes I've done

As continuation of usbhub's PnP handler debug and testing, this week I have commited patches with fixes. The most important ones are described below (same description is given in commit messages too).

Google SoC lwIP Report Week 5

Going into week 5, I started with a code-complete but very much incorrect implementation of the TDI_SEND and TDI_RECEIVE IRQ handlers. My TCP_CONTEXT data structure and the existing ADDRESS_FILE data structure both did not contain a way to keep track of pending IRQs, so I had no way of keeping track of outstanding pending IRQs and what connection contexts they were supposed to be associated with. Without a clear scheme for keeping track of the information, IRP pointers invariably got lost.

SATA AHCI Driver GSoC - Week 4 Update

This week I worked on AHCI IO Request Processing and FIS programming part. I implemented IO Queue, Slot distribution mechanism for AHCI requests. Updated Github's PR for next round of code review.Next I will be working on port programming i.e. telling the controller about the slots that I've allotted for IO request.
Very soon we will have a running AHCI device driver :D

USB 1.1 UHCI improvements GSoC - Week 4

TO LEARN HOW TO SWIM, YOU NEED TO GET INTO THE WATER.

At the start of the week I was debugging the system crash on ROS's usbhub unload in Win2k3. I spent a lot of time asking questions and discussing topics related to WDM with my mentor Thfabba. He kind of kickstarted me, giving small tasks and then analyzing with me the results. During that sessions I have gathered many new tips related debugging and also started feeling much more confidently working with WDM.

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