Revert to the legacy implementation to avoid a system hang.
v2: Correct the address for GAMW_ECO_DEV_RW_IA_REG
v3: Renamed to Wa_220166154
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 3 +++
drivers/gpu/drm/i915/intel_pm.c | 6 ++++++
2 files changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index b2663de..a4db85a 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8216,6 +8216,9 @@ enum {
#define GEN11_LSN_UNSLCVC_GAFS_HALF_CL2_MACALLOC (1 << 9)
#define GEN11_LSN_UNSLCVC_GAFS_HALF_SF_MAXALLOC (1 << 7)
+#define GAMW_ECO_DEV_RW_IA_REG _MMIO(0x4080)
+#define GAMW_ECO_DEV_CTX_RELOAD_DISABLE (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_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 3843c28..c5bf71b 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -8519,6 +8519,12 @@ static void icl_init_clock_gating(struct drm_i915_private *dev_priv)
I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) |
GEN11_LQSC_CLEAN_EVICT_DISABLE));
+ /* Wa_220166154:icl
+ * Formerly known as WaDisCtxReload
+ */
+ I915_WRITE(GAMW_ECO_DEV_RW_IA_REG, (I915_READ(GAMW_ECO_DEV_RW_IA_REG) |
+ GAMW_ECO_DEV_CTX_RELOAD_DISABLE));
+
I915_WRITE(GEN8_GARBCNTL,
/* Wa_1604223664:icl
* Formerly known as WaL3BankAddressHashing
--
1.9.1
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