drm/xe/xelp: Add Wa_18022495364

Add Wa_18022495364 as a context workaround batch buffer workaround.

Signed-off-by: Tvrtko Ursulin <[e-mail]>
Reviewed-by: Lucas De Marchi <[e-mail]>
Cc: Matt Roper <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lucas De Marchi <[e-mail]>

drivers/gpu/drm/xe/regs/xe_engine_regs.h

···
 #define   PPHWSP_CSB_AND_TIMESTAMP_REPORT_DIS	REG_BIT(14)
 #define   CS_PRIORITY_MEM_READ			REG_BIT(7)
 
+#define CS_DEBUG_MODE2(base)			XE_REG((base) + 0xd8, XE_REG_OPTION_MASKED)
+#define   INSTRUCTION_STATE_CACHE_INVALIDATE	REG_BIT(6)
+
 #define FF_SLICE_CS_CHICKEN1(base)		XE_REG((base) + 0xe0, XE_REG_OPTION_MASKED)
 #define   FFSC_PERCTX_PREEMPT_CTRL		REG_BIT(14)
 

drivers/gpu/drm/xe/xe_lrc.c

···
 	return cmd - batch;
 }
 
+static ssize_t setup_invalidate_state_cache_wa(struct xe_lrc *lrc,
+					       struct xe_hw_engine *hwe,
+					       u32 *batch, size_t max_len)
+{
+	u32 *cmd = batch;
+
+	if (!XE_WA(lrc->gt, 18022495364) ||
+	    hwe->class != XE_ENGINE_CLASS_RENDER)
+		return 0;
+
+	if (xe_gt_WARN_ON(lrc->gt, max_len < 3))
+		return -ENOSPC;
+
+	*cmd++ = MI_LOAD_REGISTER_IMM | MI_LRI_NUM_REGS(1);
+	*cmd++ = CS_DEBUG_MODE1(0).addr;
+	*cmd++ = _MASKED_BIT_ENABLE(INSTRUCTION_STATE_CACHE_INVALIDATE);
+
+	return cmd - batch;
+}
+
 struct bo_setup {
 	ssize_t (*setup)(struct xe_lrc *lrc, struct xe_hw_engine *hwe,
 			 u32 *batch, size_t max_size);
···
 {
 	static const struct bo_setup funcs[] = {
 		{ .setup = setup_timestamp_wa },
+		{ .setup = setup_invalidate_state_cache_wa },
 		{ .setup = setup_utilization_wa },
 	};
 	struct bo_setup_state state = {

drivers/gpu/drm/xe/xe_wa_oob.rules

···
 1607983814	GRAPHICS_VERSION_RANGE(1200, 1210)
 16010904313	GRAPHICS_VERSION_RANGE(1200, 1210)
[phone]	GRAPHICS_VERSION_RANGE(1200, 1210)
 22012773006	GRAPHICS_VERSION_RANGE(1200, 1250)
 14014475959	GRAPHICS_VERSION_RANGE(1270, 1271), GRAPHICS_STEP(A0, B0)
 		PLATFORM(DG2)