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drm/i915/icl: WaDisableCleanEvicts 

Avoids an undefined LLC behavior.

BSpec: 9613

v2: Renamed to Wa_1405733216
v3: Spaces around '<<' and fix surrounding code
v4: Rebased on top of the WA refactoring
v5: Added References (Mika)
v6:
  - Rebased
  - C, not lisp (Chris)

References: HSDES#1405733216
Signed-off-by: Oscar Mateo <oscar.mateo@intel.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/1525814984-20039-7-git-send-email-oscar.mateo@intel.com
This commit is contained in:
Oscar Mateo 2018-05-08 14:29:28 -07:00 committed by Mika Kuoppala
parent f4a357140a
commit 5246ae4bdb
2 changed files with 9 additions and 2 deletions
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5
drivers/gpu/drm/i915/i915_reg.h
View File

@ -7232,8 +7232,9 @@ enum {
#define L3SQ_URB_READ_CAM_MATCH_DISABLE (1<<27)
#define GEN8_L3SQCREG4 _MMIO(0xb118)
#define GEN8_LQSC_RO_PERF_DIS (1<<27)
#define GEN8_LQSC_FLUSH_COHERENT_LINES (1<<21)
#define GEN11_LQSC_CLEAN_EVICT_DISABLE (1 << 6)
#define GEN8_LQSC_RO_PERF_DIS (1 << 27)
#define GEN8_LQSC_FLUSH_COHERENT_LINES (1 << 21)
/* GEN8 chicken */
#define HDC_CHICKEN0 _MMIO(0x7300)

6
drivers/gpu/drm/i915/intel_workarounds.c
View File

@ -720,6 +720,12 @@ static void icl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
I915_WRITE(GEN11_GACB_PERF_CTRL,
(I915_READ(GEN11_GACB_PERF_CTRL) & ~GEN11_HASH_CTRL_MASK) |
GEN11_HASH_CTRL_BIT0 | GEN11_HASH_CTRL_BIT4);
/* Wa_1405733216:icl
* Formerly known as WaDisableCleanEvicts
*/
I915_WRITE(GEN8_L3SQCREG4, I915_READ(GEN8_L3SQCREG4) |
GEN11_LQSC_CLEAN_EVICT_DISABLE);
}
void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)