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The eLLC cannot be determined by PCIID because as far as we know, even machines supporting eLLC may not have it enabled, or fused off or whatever. It's possible this isn't actually true, and at that point we can switch to a DEV_INFO flag instead. I've defined everything where the docs are clear, and left the rest as magic. But we need it before we set the pte_encode function pointers, which happens really early, in gtt_init. The problem with just doing the normal sequence earlier is we don't have the ability to use forcewake until after the pte functions have been set up. Since all solutions are somewhat ugly (barring rewriting all the init ordering), I've opted to do the detection really early, and the enabling later - since the register to detect doesn't require forcewake. Signed-off-by: Ben Widawsky <ben@bwidawsk.net> [danvet: Move dev_priv->ellc_size away from the dri1 dungeon to a nice place right next to the l3 parity stuff. Also squash in the follow-up commit to read out the eLLC size a bit earlier.] Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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