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  1. 14 6月, 2016 2 次提交
    • A
      drm/i915/bxt: Add WaEnablePooledEuFor2x6 · e015dd69
      由 arun.siluvery@linux.intel.com 提交于 
      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: NMika 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: NArun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: NTvrtko Ursulin <tvrtko.ursulin@intel.com>
      e015dd69
    • A
      drm/i915:bxt: Enable Pooled EU support · 33e141ed
      由 arun.siluvery@linux.intel.com 提交于 
      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: NJeff McGee <jeff.mcgee@intel.com>
Signed-off-by: NArun Siluvery <arun.siluvery@linux.intel.com>
Reviewed-by: NMichał Winiarski <michal.winiarski@intel.com>
Signed-off-by: NTvrtko Ursulin <tvrtko.ursulin@intel.com>
      33e141ed
  3. 13 6月, 2016 17 次提交
  5. 10 6月, 2016 1 次提交
  7. 08 6月, 2016 20 次提交