Hello,
I want to read  "Upstream Device Address" of a particular usb device from my software.

"usb -v" utility returns below details of the usb device, which has "Upstream Device Address" parameter, I want to get 
the same in my software. Please let me know how to get it.

Device Address             : 1
Upstream Host Controller   : 0
Upstream Device Address    : 0
Upstream Port              : 1

Where can I get the source code for usb utility?