1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h
new file mode 100644
index 000000000000..298ad38e6c7d
--- /dev/null
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright(c) 2022, Intel Corporation. All rights reserved.
+ */
+
+#ifndef __INTEL_PXP_GSCCS_H__
+#define __INTEL_PXP_GSCCS_H__
+
+#include <linux/types.h>
+
+struct intel_pxp;
+
+#define GSC_REPLY_LATENCY_MS 210
+/*
+ * Max FW response time is 200ms, to which we add 10ms to account for overhead
+ * such as request preparation, GuC submission to hw and pipeline completion times.
+ */
+#define GSC_PENDING_RETRY_MAXCOUNT 40
+#define GSC_PENDING_RETRY_PAUSE_MS 50
+#define GSCFW_MAX_ROUND_TRIP_LATENCY_MS (GSC_PENDING_RETRY_MAXCOUNT * GSC_PENDING_RETRY_PAUSE_MS)
+
+#ifdef CONFIG_DRM_I915_PXP
+void intel_pxp_gsccs_fini(struct intel_pxp *pxp);
+int intel_pxp_gsccs_init(struct intel_pxp *pxp);
+
+int intel_pxp_gsccs_create_session(struct intel_pxp *pxp, int arb_session_id);
+void intel_pxp_gsccs_end_arb_fw_session(struct intel_pxp *pxp, u32 arb_session_id);
+
+#else
+static inline void intel_pxp_gsccs_fini(struct intel_pxp *pxp)
+{
+}
+
+static inline int intel_pxp_gsccs_init(struct intel_pxp *pxp)
+{
+	return 0;
+}
+
+#endif
+
+bool intel_pxp_gsccs_is_ready_for_sessions(struct intel_pxp *pxp);
+
+#endif /*__INTEL_PXP_GSCCS_H__ */