Umm. The firepro series have other drivers.
Just go to the amd driver site
step 1 -> Workstation Graphics
step 2 -> FirePro Performance Pre-WHQL Driver
step 3 -> FirePro 2270
step 4 -> whatever Linux architecture you have
etc. Not that hard.
PS why did you get a workstation graphics card? Those tend to be more expensive and slower than the consumer cards.