read, write, update eeprom on pci card on ubuntu

Question

I'm trying to figure out how I can read, write, and update memory addresses for eeprom on a pci network card using c language on ubuntu.

Can some please point me in the right direction to get started? Thank you

Answer 1

After some research, it appears ethtool can be used to read and write to the eeprom (http://manpages.ubuntu.com/manpages/hardy/en/man8/ethtool.8.html):

   ethtool -d|--register-dump ethX [raw on|off] [hex on|off] [file name]

   ethtool -e|--eeprom-dump ethX [raw on|off] [offset N] [length N]

   ethtool -E|--change-eeprom ethX [magic N] [offset N] [value N]

To dump eeprom, you can do ethtool -e ethX raw <on|off> offset <N> length <N>.