diff options
| author | Anuj Phogat <anuj.phogat@gmail.com> | 2018-10-04 21:29:39 +0300 |
|---|---|---|
| committer | Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2018-10-09 10:02:03 +0300 |
| commit | 71ffd49cc9b9da5d9e97b5153ee1fe33dfd61a43 (patch) | |
| tree | 23331d0619c6b5ba8c4e213012fbf984699ab222 | |
| parent | 0c7d2aedf51b0a9f728ec6e921eaa8f82a47db91 (diff) | |
| download | linux-71ffd49cc9b9da5d9e97b5153ee1fe33dfd61a43.tar.xz | |
drm/i915/icl:Add Wa_1606682166
Incorrect TDL's SSP address shift in SARB for 16:6 & 18:8 modes.
Disable the Sampler state prefetch functionality in the SARB by
programming 0xB000[30] to '1'. This is to be done at boot time
and the feature must remain disabled permanently.
Fixes flaky tex-mip-level-selection* piglit tests with Mesa i965
driver.
Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181004182939.7668-6-radhakrishna.sripada@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_workarounds.c | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index c7e75f81bd70..20785417953d 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7414,6 +7414,7 @@ enum { #define GEN7_SARCHKMD _MMIO(0xB000) #define GEN7_DISABLE_DEMAND_PREFETCH (1 << 31) +#define GEN7_DISABLE_SAMPLER_PREFETCH (1 << 30) #define GEN7_L3SQCREG1 _MMIO(0xB010) #define VLV_B0_WA_L3SQCREG1_VALUE 0x00D30000 diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c index b298f53c99d4..e4136590fed9 100644 --- a/drivers/gpu/drm/i915/intel_workarounds.c +++ b/drivers/gpu/drm/i915/intel_workarounds.c @@ -910,7 +910,8 @@ static void icl_gt_workarounds_apply(struct drm_i915_private *dev_priv) if (IS_ICL_REVID(dev_priv, ICL_REVID_A0, ICL_REVID_B0)) I915_WRITE(GEN7_SARCHKMD, I915_READ(GEN7_SARCHKMD) | - GEN7_DISABLE_DEMAND_PREFETCH); + GEN7_DISABLE_DEMAND_PREFETCH | + GEN7_DISABLE_SAMPLER_PREFETCH); } void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv) |