1. 14 Jun, 2016 3 commits
    • arun.siluvery@linux.intel.com's avatar
      drm/i915/bxt: Add WaDisablePooledEuLoadBalancingFix · 780f0aeb
      arun.siluvery@linux.intel.com authored
      This is a WA affecting pooled eu which is a bxt specific feature.
      Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
      Cc: Winiarski, Michal <michal.winiarski@intel.com>
      Cc: Zou, Nanhai <nanhai.zou@intel.com>
      Cc: Yang, Rong R <rong.r.yang@intel.com>
      Cc: Jeff McGee <jeff.mcgee@intel.com>
      Signed-off-by: default avatarArun Siluvery <arun.siluvery@linux.intel.com>
      Signed-off-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
      780f0aeb
    • arun.siluvery@linux.intel.com's avatar
      drm/i915/bxt: Add WaEnablePooledEuFor2x6 · e015dd69
      arun.siluvery@linux.intel.com authored
      Pooled EU is enabled by default for BXT but for fused down 2x6 parts it is
      advised to turn it off. But there is another HW issue in these parts (fused
      down 2x6 parts) before C0 that requires Pooled EU to be enabled as a
      workaround. In this case the pool configuration changes depending upon
      which subslice is disabled. This doesn't affect if the device has all 3
      subslices enabled.
      
      Userspace need to know min no. of eus in a pool as it varies based on which
      subslice is disabled, this is not yet exported because userspace support is
      not available yet. Once the support is available this needs to be exported
      using getparam ioctls.
      
      v2: s/subslice_total/subslice_per_slice as it is a more logical field (Mika)
      Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
      Cc: Winiarski, Michal <michal.winiarski@intel.com>
      Cc: Zou, Nanhai <nanhai.zou@intel.com>
      Cc: Yang, Rong R <rong.r.yang@intel.com>
      Cc: Tim Gore <tim.gore@intel.com>
      Cc: Jeff McGee <jeff.mcgee@intel.com>
      Cc: Mika Kuoppala <mika.kuoppala@intel.com>
      Signed-off-by: default avatarArun Siluvery <arun.siluvery@linux.intel.com>
      Signed-off-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
      e015dd69
    • arun.siluvery@linux.intel.com's avatar
      drm/i915:bxt: Enable Pooled EU support · 33e141ed
      arun.siluvery@linux.intel.com authored
      This mode allows to assign EUs to pools which can process work collectively.
      The command to enable this mode should be issued as part of context initialization.
      
      The pooled mode is global, once enabled it has to stay the same across all
      contexts until HW reset hence this is sent in auxiliary golden context batch.
      Thanks to Mika for the preliminary review and comments.
      
      v2: explain why this is enabled in golden context, use feature flag while
      enabling the support (Chris)
      
      v3: Include only kernel support as userspace support is not available yet.
      
      User space clients need to know when the pooled EU feature is present
      and enabled on the hardware so that they can adapt work submissions.
      Create a new device info flag for this purpose.
      
      Set has_pooled_eu to true in the Broxton static device info - Broxton
      supports the feature in hardware and the driver will enable it by
      default.
      
      We need to add getparam ioctls to enable userspace to query availability of
      this feature and to retrieve min. no of eus in a pool but we will expose
      them once userspace support is available. Opensource users for this feature
      are mesa, libva and beignet.
      
      Beignet team is currently working on adding userspace support.
      
      Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v2)
      Cc: Winiarski, Michal <michal.winiarski@intel.com>
      Cc: Zou, Nanhai <nanhai.zou@intel.com>
      Cc: Yang, Rong R <rong.r.yang@intel.com>
      Cc: Mika Kuoppala <mika.kuoppala@intel.com>
      Cc: Chris Wilson <chris@chris-wilson.co.uk>
      Cc: Armin Reese <armin.c.reese@intel.com>
      Cc: Tim Gore <tim.gore@intel.com>
      Signed-off-by: default avatarJeff McGee <jeff.mcgee@intel.com>
      Signed-off-by: default avatarArun Siluvery <arun.siluvery@linux.intel.com>
      Reviewed-by: default avatarMichał Winiarski <michal.winiarski@intel.com>
      Signed-off-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
      33e141ed
  2. 13 Jun, 2016 17 commits
  3. 09 Jun, 2016 1 commit
  4. 08 Jun, 2016 19 commits