A hacker known as 'StrontiumDog' has shared with the development community PS3 RSX data dumps. They are only 'human readable'.
The hacker says he's releasing them because a lot of information is contained within them, and hacking Nvidia's GPU's is a 'specialist field'.
He hopes some smart folk can take the files and provide info to allow full RSX access under Linux. The Dog also expressed confidence in this as as a result his cursory scan of the data and functions that exist in the PS3 Hypervisor. The data does indeed reveal structures of crtical memory, register, layout and so forth.