drm/i915/tgl: add Gen12 default indirect ctx offset

Gen12 uses a new indirect ctx offset.

Bspec: 11740
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190817093902.2171-28-lucas.demarchi@intel.com

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

@@ -3046,6 +3046,10 @@ static u32 intel_lr_indirect_ctx_offset(struct intel_engine_cs *engine)
 	default:
 		MISSING_CASE(INTEL_GEN(engine->i915));
 		/* fall through */
+	case 12:
+		indirect_ctx_offset =
+			GEN12_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT;
+		break;
 	case 11:
 		indirect_ctx_offset =
 			GEN11_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT;

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

@@ -64,5 +64,6 @@
 #define GEN9_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT	0x26
 #define GEN10_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT	0x19
 #define GEN11_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT	0x1A
+#define GEN12_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT	0xD
 
 #endif /* _INTEL_LRC_REG_H_ */