kernel.git/drivers/gpu/drm/i915/intel_ringbuffer.c, branch linux-4.7.y

drm/i915/gen9: Add WaInPlaceDecompressionHang

2016-08-20T16:11:00Z

commit f15f6ca1e706e11fd07611bd4c7f903625349b33 upstream. Add this workaround to prevent hang when in place compression is used. References: HSD#2135774 Signed-off-by: Mika Kuoppala Reviewed-by: Arun Siluvery Signed-off-by: Joonas Lahtinen (cherry picked from commit 4ba9c1f7c7b8ca8c1d77f65d408e589dc87b9a2d) Signed-off-by: Daniel Vetter Signed-off-by: Greg Kroah-Hartman

drm/i915/gen9: implement WaConextSwitchWithConcurrentTLBInvalidate

2016-07-15T12:51:30Z

This patch enables a workaround for a mid thread preemption issue where a hardware timing problem can prevent the context restore from happening, leading to a hang. v2: move to gen9_init_workarounds (Arun) v3: move to start of gen9_init_workarounds (Arun) Signed-off-by: Tim Gore Reviewed-by: Arun Siluvery Signed-off-by: Tvrtko Ursulin Link: http://patchwork.freedesktop.org/patch/msgid/1465816501-25557-1-git-send-email-tim.gore@intel.com (cherry picked from commit a8ab5ed5e1bf856eceaab5579236de6f92822b9f) Signed-off-by: Mika Kuoppala

drm/i915/kbl: Add WaDisableSbeCacheDispatchPortSharing

2016-07-15T12:51:27Z

This is needed for all kbl revision. v2: Don't add revid checks to generic gen9 init (Arun) References: HSD#2135593 Signed-off-by: Mika Kuoppala Reviewed-by: Matthew Auld Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-21-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 954337aa96a31f6d4baf1e40ac219fbb1b1d92f4) Signed-off-by: Mika Kuoppala

drm/i915/kbl: Add WaDisableGafsUnitClkGating

2016-07-15T12:51:27Z

We need to disable clock gating in this unit to work around hardware issue causing possible corruption/hang. v2: name the bit (Ville) v3: leave the fix enabled for 2227050 and set correct bit (Matthew) v4: Split out the skl part in separate commit for easier backport References: HSD#2227156, HSD#2227050 Cc: Ville Syrjälä Cc: Matthew Auld Signed-off-by: Mika Kuoppala Reviewed-by: Matthew Auld Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-20-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 4de5d7ccbccc88d2f7b1bcdc2180196ded7db8b8) Signed-off-by: Mika Kuoppala

drm/i915: Add WaInsertDummyPushConstP for bxt and kbl

2016-07-15T12:51:26Z

Add this workaround for both bxt and kbl up to until rev B0. References: HSD#2136703 Signed-off-by: Mika Kuoppala Reviewed-by: Matthew Auld Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-16-git-send-email-mika.kuoppala@intel.com (cherry picked from commit ad2bdb44b19529ba992bd0b7667e91b14fe9a9ee) Signed-off-by: Mika Kuoppala

drm/i915/kbl: Add WaDisableDynamicCreditSharing

2016-07-15T12:51:26Z

Bspec states that we need to turn off dynamic credit sharing on kbl revid a0 and b0. This happens by writing bit 28 on 0x4ab8. References: HSD#2225601, HSD#2226938, HSD#2225763 Signed-off-by: Mika Kuoppala Reviewed-by: Matthew Auld Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-15-git-send-email-mika.kuoppala@intel.com (cherry picked from commit c0b730d572ea00d427f6112b17982c6b9d5e97bb) Signed-off-by: Mika Kuoppala

drm/i915/kbl: Add WaDisableLSQCROPERFforOCL

2016-07-15T12:51:25Z

Extend the scope of this workaround, already used in skl, to also take effect in kbl. v2: Fix KBL_REVID_E0 (Matthew) References: HSD#2132677 Cc: Matthew Auld Signed-off-by: Mika Kuoppala Reviewed-by: Matthew Auld Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-12-git-send-email-mika.kuoppala@intel.com (cherry picked from commit fe90581987cd5fadd2942f59f8511bcb39fdec34) Signed-off-by: Mika Kuoppala

drm/i915/kbl: Add WaDisableFenceDestinationToSLM for A0

2016-07-15T12:51:24Z

Add this workaround for kbl revid A0 only. v2: rebase v3: carve out a non related workaround (Chris) References: HSD#1911714 Cc: Chris Wilson Signed-off-by: Mika Kuoppala Reviewed-by: Matthew Auld Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-9-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 8401d42fd5adf709281e1700194805f393b49573) Signed-off-by: Mika Kuoppala

drm/i915/kbl: Add WaEnableGapsTsvCreditFix

2016-07-15T12:51:23Z

We need this crucial workaround from skl also to all kbl revisions. Lack of it was causing system hangs on skl enabling so this is a must have. v2: Don't add revid checks to gen9 init workarounds (Arun) References: HSD#2126660 Cc: Arun Siluvery Signed-off-by: Mika Kuoppala Reviewed-by: Matthew Auld Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-8-git-send-email-mika.kuoppala@intel.com (cherry picked from commit e587f6cb0af140f3c0ea794d8616eb9a29969983) Signed-off-by: Mika Kuoppala

drm/i915: Mimic skl with WaForceEnableNonCoherent

2016-07-15T12:51:23Z

Past evidence with system hangs and hsds tie WaForceEnableNonCoherent and WaDisableHDCInvalidation to WaForceContextSaveRestoreNonCoherent. Documentation states that WaForceContextSaveRestoreNonCoherent would not be needed on skl past E0 but evidence proved otherwise. See commit <510650e8b2ab> ("drm/i915/skl: Fix spurious gpu hang with gt3/gt4 revs"). In this scope consider kbl to be skl with a bigger revision than E0 so play it safe and bind these two workarounds to the WaForceContextSaveRestoreNonCoherent, and apply to all gen9. v2: fix comment (Matthew) References: HSD#2134449, HSD#2131413 Signed-off-by: Mika Kuoppala Reviewed-by: Matthew Auld Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-7-git-send-email-mika.kuoppala@intel.com (cherry picked from commit bbaefe72a00c93c6ec12e029019681e3f7d7de7a) Signed-off-by: Mika Kuoppala