A lot of hardware that has had Linux drivers written for it is specced openly in this style: https://www.intel.com/content/dam/www/public/us/en/documents/datash

A lot of hardware that has had Linux drivers written for it is specced openly in this style: https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/82576eb-gigabit-ethernet-controller-datasheet.pdf https://www.intel.com/content/dam/www/public/us/en/documents...