• Ben Skeggs's avatar
    drm/nv20-nv40: add memory type detection · ff92a6cd
    Ben Skeggs authored
    NV20/NV30 is partially educated guesswork at this point, based on any
    information around about available memory types and a horribly unspeakable
    amount of vbios image scouring.  I'm not entirely certain the GDDR3 define
    is correct, I have not spotted a single vbios with that value yet (though
    it is mentioned in some 1218-using nv4x vbios), but there are reports that
    some nv3x did use it..
    NV40(100914) confirmed by switching an NV49 to DDR1/DDR2 values and making
    sure that the binary driver behaviour showed it had detected DDR1/DDR2
    instead of GDDR3 before dying horribly.
    NV40(100474) confirmed by doing much the same task as above on an NV44,
    except this was *much* easier as changing the values didn't seem to have
    any noticable effect on the memory controller aside from changing the
    binary driver's behaviour.
    Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
nouveau_state.c 39.9 KB