drm/i915/gt: Correct prefix on a few registers

We have a few registers that have existed for several hardware
generations, but are only used by the driver on Xe_HP and beyond.  In
cases where the Xe_HP version of the register is now replicated and uses
multicast behavior, but earlier generations were singleton, let's change
the register prefix to "XEHP_" to help clarify that we're using the
newer multicast form of the register.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221014230239.1023689-5-matthew.d.roper@intel.com

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

@@ -483,7 +483,7 @@
 
 #define GEN8_RC6_CTX_INFO			_MMIO(0x8504)
 
-#define GEN12_SQCM				_MMIO(0x8724)
+#define XEHP_SQCM				_MMIO(0x8724)
 #define   EN_32B_ACCESS				REG_BIT(30)
 
 #define HSW_IDICR				_MMIO(0x9008)
@@ -986,7 +986,7 @@
 #define GEN11_SCRATCH2				_MMIO(0xb140)
 #define   GEN11_COHERENT_PARTIAL_WRITE_MERGE_ENABLE	(1 << 19)
 
-#define GEN11_L3SQCREG5				_MMIO(0xb158)
+#define XEHP_L3SQCREG5				_MMIO(0xb158)
 #define   L3_PWM_TIMER_INIT_VAL_MASK		REG_GENMASK(9, 0)
 
 #define MLTICTXCTL				_MMIO(0xb170)
@@ -1050,7 +1050,7 @@
 #define GEN12_COMPCTX_TLB_INV_CR		_MMIO(0xcf04)
 #define XEHP_COMPCTX_TLB_INV_CR			_MMIO(0xcf04)
 
-#define GEN12_MERT_MOD_CTRL			_MMIO(0xcf28)
+#define XEHP_MERT_MOD_CTRL			_MMIO(0xcf28)
 #define RENDER_MOD_CTRL				_MMIO(0xcf2c)
 #define COMP_MOD_CTRL				_MMIO(0xcf30)
 #define VDBX_MOD_CTRL				_MMIO(0xcf34)
@@ -1152,7 +1152,7 @@
 #define EU_PERF_CNTL1				_MMIO(0xe558)
 #define EU_PERF_CNTL5				_MMIO(0xe55c)
 
-#define GEN12_HDC_CHICKEN0			_MMIO(0xe5f0)
+#define XEHP_HDC_CHICKEN0			_MMIO(0xe5f0)
 #define   LSC_L1_FLUSH_CTL_3D_DATAPORT_FLUSH_EVENTS_MASK	REG_GENMASK(13, 11)
 #define ICL_HDC_MODE				_MMIO(0xe5f4)
 

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

@@ -569,7 +569,7 @@ static void dg2_ctx_gt_tuning_init(struct intel_engine_cs *engine,
 				   struct i915_wa_list *wal)
 {
 	wa_masked_en(wal, CHICKEN_RASTER_2, TBIMR_FAST_CLIP);
-	wa_write_clr_set(wal, GEN11_L3SQCREG5, L3_PWM_TIMER_INIT_VAL_MASK,
+	wa_write_clr_set(wal, XEHP_L3SQCREG5, L3_PWM_TIMER_INIT_VAL_MASK,
 			 REG_FIELD_PREP(L3_PWM_TIMER_INIT_VAL_MASK, 0x7f));
 	wa_add(wal,
 	       XEHP_FF_MODE2,
@@ -1514,7 +1514,7 @@ dg2_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
 	 * recommended tuning settings documented in the bspec's
 	 * performance guide section.
 	 */
-	wa_write_or(wal, GEN12_SQCM, EN_32B_ACCESS);
+	wa_write_or(wal, XEHP_SQCM, EN_32B_ACCESS);
 
 	/* Wa_14015795083 */
 	wa_write_clr(wal, GEN8_MISCCPCTL, GEN12_DOP_CLOCK_GATE_RENDER_ENABLE);
@@ -2170,7 +2170,7 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
 		 * Wa_22010960976:dg2
 		 * Wa_14013347512:dg2
 		 */
-		wa_masked_dis(wal, GEN12_HDC_CHICKEN0,
+		wa_masked_dis(wal, XEHP_HDC_CHICKEN0,
 			      LSC_L1_FLUSH_CTL_3D_DATAPORT_FLUSH_EVENTS_MASK);
 	}
 
@@ -2223,7 +2223,7 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
 	if (IS_DG2_GRAPHICS_STEP(engine->i915, G10, STEP_A0, STEP_B0) ||
 	    IS_DG2_GRAPHICS_STEP(engine->i915, G11, STEP_A0, STEP_B0)) {
 		/* Wa_14012362059:dg2 */
-		wa_write_or(wal, GEN12_MERT_MOD_CTRL, FORCE_MISS_FTLB);
+		wa_write_or(wal, XEHP_MERT_MOD_CTRL, FORCE_MISS_FTLB);
 	}
 
 	if (IS_DG2_GRAPHICS_STEP(i915, G11, STEP_B0, STEP_FOREVER) ||
@@ -2816,7 +2816,7 @@ general_render_compute_wa_init(struct intel_engine_cs *engine, struct i915_wa_li
 		}
 
 		/* Wa_14012362059:xehpsdv */
-		wa_write_or(wal, GEN12_MERT_MOD_CTRL, FORCE_MISS_FTLB);
+		wa_write_or(wal, XEHP_MERT_MOD_CTRL, FORCE_MISS_FTLB);
 
 		/* Wa_14014368820:xehpsdv */
 		wa_write_or(wal, GEN12_GAMCNTRL_CTRL, INVALIDATION_BROADCAST_MODE_DIS |