Gigabit Ethernet Interface (via Marvell 88E1111) with Cyclone IVE FPGA

Those are the TSE's configuration registers. You'll find a list in the datasheet here: http://www.altera.com/literature/ug/ug_ethernet.pdf

By the way this is a bad way of doing it. The TSE's base address and the register numbers are hard coded in the source code, which makes it difficult to read and maintain.

I'd recommend instead to include the <system.h> file, which should include a TSE_BASE (if your TSE component is called "tse" in your project) definition with the base address to use instead of the hard coded 0x00102000.

Then if you include the <triple_speed_ethernet_regs.h> file you will find a np_tse_mac structure that you can use to access all the configuration registers. Just replace the first line with something like

np_tse_mac *tse = (np_tse_mac*) TSE_BASE;

and then use tse->xxx to access the different registers.