• Imre Deak's avatar
    drm/i915/gen8+: Add RC6 CTX corruption WA · 2248a283
    Imre Deak authored
    In some circumstances the RC6 context can get corrupted. We can detect
    this and take the required action, that is disable RC6 and runtime PM.
    The HW recovers from the corrupted state after a system suspend/resume
    cycle, so detect the recovery and re-enable RC6 and runtime PM.
    
    v2: rebase (Mika)
    v3:
    - Move intel_suspend_gt_powersave() to the end of the GEM suspend
      sequence.
    - Add commit message.
    v4:
    - Rebased on intel_uncore_forcewake_put(i915->uncore, ...) API
      change.
    v5:
    - Rebased on latest upstream gt_pm refactoring.
    v6:
    - s/i915_rc6_/intel_rc6_/
    - Don't return a value from i915_rc6_ctx_wa_check().
    v7:
    - Rebased on latest gt rc6 refactoring.
    Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
    Signed-off-by: default avatarMika Kuoppala <mika.kuoppala@linux.intel.com>
    [airlied: pull this later version of this patch into drm-next
    to make resolving the conflict mess easier.]
    Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
    2248a283
i915_reg.h 476 KB