[PATCH v6 1/2] drm/xe: Use IBC v3 on PTL

Intelligent Bias Control (IBC) v3 algorithm in GuC has PTL specific
optimizations. This version selection param is only available GuC 70.48.0
onwards.

v4: Fix sashiko.dev review issue
v5: Don't cascade return checks (Rodrigo)

Cc: Rodrigo Vivi <[email protected]>
Reviewed-by: Rodrigo Vivi <[email protected]>
Signed-off-by: Vinay Belgaumkar <[email protected]>
---
 drivers/gpu/drm/xe/abi/guc_actions_slpc_abi.h |  1 +
 drivers/gpu/drm/xe/xe_guc_pc.c                | 15 ++++++++++++++-
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/abi/guc_actions_slpc_abi.h b/drivers/gpu/drm/xe/abi/guc_actions_slpc_abi.h
index ce5c59517528..57baa68bcba4 100644
--- a/drivers/gpu/drm/xe/abi/guc_actions_slpc_abi.h
+++ b/drivers/gpu/drm/xe/abi/guc_actions_slpc_abi.h
@@ -119,6 +119,7 @@ enum slpc_param_id {
 	SLPC_PARAM_STRATEGIES = 26,
 	SLPC_PARAM_POWER_PROFILE = 27,
 	SLPC_PARAM_IGNORE_EFFICIENT_FREQUENCY = 28,
+	SLPC_PARAM_SET_IBC_VERSION = 29,
 	SLPC_MAX_PARAM = 32,
 };
 
diff --git a/drivers/gpu/drm/xe/xe_guc_pc.c b/drivers/gpu/drm/xe/xe_guc_pc.c
index 59f2fa79ad42..211569c2e8ea 100644
--- a/drivers/gpu/drm/xe/xe_guc_pc.c
+++ b/drivers/gpu/drm/xe/xe_guc_pc.c
@@ -1234,8 +1234,21 @@ static int pc_modify_defaults(struct xe_guc_pc *pc)
 
 	if (xe->info.platform == XE_PANTHERLAKE) {
 		ret = pc_action_set_dcc(pc, false);
-		if (unlikely(ret))
+		if (unlikely(ret)) {
 			xe_gt_err(gt, "Failed to modify DCC default: %pe\n", ERR_PTR(ret));
+			return ret;
+		}
+
+		if (xe_gt_is_main_type(gt) &&
+		    GUC_FIRMWARE_VER_AT_LEAST(&gt->uc.guc, 70, 48, 0)) {
+			ret = pc_action_set_param(pc,
+						  SLPC_PARAM_SET_IBC_VERSION,
+						  3);
+			if (unlikely(ret)) {
+				xe_gt_err(gt, "Failed to modify IBC version: %pe\n", ERR_PTR(ret));
+				return ret;
+			}
+		}
 	}
 
 	return ret;
-- 
2.38.1