drm/i915/pvc: Annotate two more workaround/tuning registers as MCR

XEHPC_LNCFMISCCFGREG0 and XEHPC_L3SCRUB are both in MCR register ranges
on PVC (with HALFBSLICE and L3BANK replication respectively), so they
should be explicitly declared as MCR registers and use MCR-aware
workaround handlers.

The workarounds/tuning settings should still be applied properly on PVC
even without the MCR annotation, but readback verification on
CONFIG_DRM_I915_DEBUG_GEM builds could potentitally give false positive
"workaround lost on load" warnings on parts fused such that a unicast
read targets a terminated register instance.

Fixes: a9e6942 ("drm/i915: Define MCR registers explicitly")
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230201222831.608281-1-matthew.d.roper@intel.com
(cherry picked from commit 4039e44)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Author: mattrope

drivers/gpu/drm/i915/gt/intel_gt_regs.h

@@ -979,7 +979,7 @@
 #define   GEN7_WA_FOR_GEN7_L3_CONTROL		0x3C47FF8C
 #define   GEN7_L3AGDIS				(1 << 19)
 
-#define XEHPC_LNCFMISCCFGREG0			_MMIO(0xb01c)
+#define XEHPC_LNCFMISCCFGREG0			MCR_REG(0xb01c)
 #define   XEHPC_HOSTCACHEEN			REG_BIT(1)
 #define   XEHPC_OVRLSCCC			REG_BIT(0)
 
@@ -1042,7 +1042,7 @@
 #define XEHP_L3SCQREG7				MCR_REG(0xb188)
 #define   BLEND_FILL_CACHING_OPT_DIS		REG_BIT(3)
 
-#define XEHPC_L3SCRUB				_MMIO(0xb18c)
+#define XEHPC_L3SCRUB				MCR_REG(0xb18c)
 #define   SCRUB_CL_DWNGRADE_SHARED		REG_BIT(12)
 #define   SCRUB_RATE_PER_BANK_MASK		REG_GENMASK(2, 0)
 #define   SCRUB_RATE_4B_PER_CLK			REG_FIELD_PREP(SCRUB_RATE_PER_BANK_MASK, 0x6)

drivers/gpu/drm/i915/gt/intel_workarounds.c

@@ -240,6 +240,12 @@ wa_write(struct i915_wa_list *wal, i915_reg_t reg, u32 set)
 	wa_write_clr_set(wal, reg, ~0, set);
 }
 
+static void
+wa_mcr_write(struct i915_wa_list *wal, i915_mcr_reg_t reg, u32 set)
+{
+	wa_mcr_write_clr_set(wal, reg, ~0, set);
+}
+
 static void
 wa_write_or(struct i915_wa_list *wal, i915_reg_t reg, u32 set)
 {
@@ -2970,9 +2976,9 @@ add_render_compute_tuning_settings(struct drm_i915_private *i915,
 				   struct i915_wa_list *wal)
 {
 	if (IS_PONTEVECCHIO(i915)) {
-		wa_write(wal, XEHPC_L3SCRUB,
-			 SCRUB_CL_DWNGRADE_SHARED | SCRUB_RATE_4B_PER_CLK);
-		wa_masked_en(wal, XEHPC_LNCFMISCCFGREG0, XEHPC_HOSTCACHEEN);
+		wa_mcr_write(wal, XEHPC_L3SCRUB,
+			     SCRUB_CL_DWNGRADE_SHARED | SCRUB_RATE_4B_PER_CLK);
+		wa_mcr_masked_en(wal, XEHPC_LNCFMISCCFGREG0, XEHPC_HOSTCACHEEN);
 	}
 
 	if (IS_DG2(i915)) {
@@ -3062,7 +3068,7 @@ general_render_compute_wa_init(struct intel_engine_cs *engine, struct i915_wa_li
 
 	if (IS_PONTEVECCHIO(i915)) {
 		/* Wa_16016694945 */
-		wa_masked_en(wal, XEHPC_LNCFMISCCFGREG0, XEHPC_OVRLSCCC);
+		wa_mcr_masked_en(wal, XEHPC_LNCFMISCCFGREG0, XEHPC_OVRLSCCC);
 	}
 
 	if (IS_XEHPSDV(i915)) {