[Intel-gfx] [PATCH 07/22] drm/i915/icl: WaCL2SFHalfMaxAlloc

[Oscar Mateo]

This workarounds an issue with insufficient storage for the
CL2 and SF units.

v2: Renamed to Wa_1405766107
v3: Wrapped the commit message
v4: Rebased on top of the WA refactoring

Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h          | 4 ++++
 drivers/gpu/drm/i915/intel_workarounds.c | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index fea85ac..43fdd2e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8234,6 +8234,10 @@ enum {
 #define   GEN11_HASH_CTRL_BIT0			(1 << 0)
 #define   GEN11_HASH_CTRL_BIT4			(1 << 12)
 
+#define GEN11_LSN_UNSLCVC				_MMIO(0xB43C)
+#define   GEN11_LSN_UNSLCVC_GAFS_HALF_CL2_MACALLOC	(1 << 9)
+#define   GEN11_LSN_UNSLCVC_GAFS_HALF_SF_MAXALLOC	(1 << 7)
+
 /* IVYBRIDGE DPF */
 #define GEN7_L3CDERRST1(slice)		_MMIO(0xB008 + (slice) * 0x200) /* L3CD Error Status 1 */
 #define   GEN7_L3CDERRST1_ROW_MASK	(0x7ff<<14)
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index efa885c..a0fbcf7 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -732,6 +732,13 @@ static void icl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
 	 */
 	I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) |
 				    GEN11_LQSC_CLEAN_EVICT_DISABLE));
+
+	/* Wa_1405766107:icl
+	 * Formerly known as WaCL2SFHalfMaxAlloc
+	 */
+	I915_WRITE(GEN11_LSN_UNSLCVC, (I915_READ(GEN11_LSN_UNSLCVC) |
+				       GEN11_LSN_UNSLCVC_GAFS_HALF_SF_MAXALLOC |
+				       GEN11_LSN_UNSLCVC_GAFS_HALF_CL2_MACALLOC));
 }
 
 void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)
-- 
1.9.1