[Nouveau] NV_PMC_BOOT_0 architecture field

Fri Sep 27 11:03:35 PDT 2013

Hi Ben,
At XDC you asked about the architecture field in NV_PMC_BOOT_0, and how
to correctly determine the GPU architecture.
It looks like Nouveau is getting the architecture from bits 20-27 
in NV_PMC_BOOT_0 (though masking off bits 20-23). For >= NV10, the
architecture field in NV_PMC_BOOT_0 is bits 24-28. E.g., the GK2xx
architecture has architecture value 0x10, while GK11x has value 0xF and
GK10x has value 0xE.
I hope that helps,
- Andy