• Jerome Glisse's avatar
    drm/radeon/kms: simplify & improve GPU reset V2 · 90aca4d2
    Jerome Glisse authored
    This simplify and improve GPU reset for R1XX-R6XX hw, it's
    not 100% reliable here are result:
    - R1XX/R2XX works bunch of time in a row, sometimes it
      seems it can work indifinitly
    - R3XX/R3XX the most unreliable one, sometimes you will be
      able to reset few times, sometimes not even once
    - R5XX more reliable than previous hw, seems to work most
      of the times but once in a while it fails for no obvious
      reasons (same status than previous reset just no same
      happy ending)
    - R6XX/R7XX are lot more reliable with this patch, still
      it seems that it can fail after a bunch (reset every
      2sec for 3hour bring down the GPU & computer)
    
    This have been tested on various hw, for some odd reasons
    i wasn't able to lockup RS480/RS690 (while they use to
    love locking up).
    
    Note that on R1XX-R5XX the cursor will disapear after
    lockup haven't checked why, switch to console and back
    to X will restore cursor.
    
    Next step is to record the bogus command that leaded to
    the lockup.
    
    V2 Fix r6xx resume path to avoid reinitializing blit
    module, use the gpu_lockup boolean to avoid entering
    inifinite waiting loop on fence while reiniting the GPU
    Signed-off-by: default avatarJerome Glisse <jglisse@redhat.com>
    Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
    90aca4d2
rv515.c 34.6 KB