drm/i915/icl: Add WaDisableBankHangMode

Disable GPU hang by default on unrecoverable ECC cache errors.

v2:
 * Rebase.

v3:
 * Use intel_uncore_read. (Chris)

Fixes: cc38cae7c4e9 ("drm/i915/icl: Introduce initial Icelake Workarounds")
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190520110442.403-2-tvrtko.ursulin@linux.intel.com

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index d692b83..990b278 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -529,6 +529,12 @@ static void icl_ctx_workarounds_init(struct intel_engine_cs *engine,
 {
        struct drm_i915_private *i915 = engine->i915;
 
+       /* WaDisableBankHangMode:icl */
+       wa_write(wal,
+                GEN8_L3CNTLREG,
+                intel_uncore_read(engine->uncore, GEN8_L3CNTLREG) |
+                GEN8_ERRDETBCTRL);
+
        /* Wa_1604370585:icl (pre-prod)
         * Formerly known as WaPushConstantDereferenceHoldDisable
         */

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index e97c47f..87e8780 100644 (file)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7621,6 +7621,9 @@ enum {
   #define GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION             (1 << 8)
   #define GEN8_CSC2_SBE_VUE_CACHE_CONSERVATIVE                 (1 << 0)
 
+#define GEN8_L3CNTLREG _MMIO(0x7034)
+  #define GEN8_ERRDETBCTRL (1 << 9)
+
 #define GEN11_COMMON_SLICE_CHICKEN3            _MMIO(0x7304)
   #define GEN11_BLEND_EMB_FIX_DISABLE_IN_RCC   (1 << 11)