diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h
index 615218d775b1..150c76b2acaf 100644
--- a/drivers/gpu/drm/xe/xe_device_types.h
+++ b/drivers/gpu/drm/xe/xe_device_types.h
@@ -27,6 +27,7 @@
 #include "xe_sriov_vf_ccs_types.h"
 #include "xe_step_types.h"
 #include "xe_survivability_mode_types.h"
+#include "xe_sysctrl_types.h"
 #include "xe_tile_types.h"
 #include "xe_validation.h"
 
@@ -196,6 +197,8 @@ struct xe_device {
 		u8 has_soc_remapper_telem:1;
 		/** @info.has_sriov: Supports SR-IOV */
 		u8 has_sriov:1;
+		/** @info.has_sysctrl: Supports System Controller */
+		u8 has_sysctrl:1;
 		/** @info.has_usm: Device has unified shared memory support */
 		u8 has_usm:1;
 		/** @info.has_64bit_timestamp: Device supports 64-bit timestamps */
@@ -508,6 +511,9 @@ struct xe_device {
 	/** @i2c: I2C host controller */
 	struct xe_i2c *i2c;
 
+	/** @sc: System Controller */
+	struct xe_sysctrl sc;
+
 	/** @atomic_svm_timeslice_ms: Atomic SVM fault timeslice MS */
 	u32 atomic_svm_timeslice_ms;
 
diff --git a/drivers/gpu/drm/xe/xe_pci_types.h b/drivers/gpu/drm/xe/xe_pci_types.h
index 8eee4fb1c57c..08386c5eca27 100644
--- a/drivers/gpu/drm/xe/xe_pci_types.h
+++ b/drivers/gpu/drm/xe/xe_pci_types.h
@@ -57,6 +57,7 @@ struct xe_device_desc {
 	u8 has_soc_remapper_sysctrl:1;
 	u8 has_soc_remapper_telem:1;
 	u8 has_sriov:1;
+	u8 has_sysctrl:1;
 	u8 needs_scratch:1;
 	u8 skip_guc_pc:1;
 	u8 skip_mtcfg:1;
diff --git a/drivers/gpu/drm/xe/xe_sysctrl_types.h b/drivers/gpu/drm/xe/xe_sysctrl_types.h
new file mode 100644
index 000000000000..8217f6befe70
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_sysctrl_types.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2026 Intel Corporation
+ */
+
+#ifndef _XE_SYSCTRL_TYPES_H_
+#define _XE_SYSCTRL_TYPES_H_
+
+#include <linux/mutex.h>
+#include <linux/types.h>
+
+struct xe_mmio;
+
+/**
+ * struct xe_sysctrl - System Controller driver context
+ *
+ * This structure maintains the runtime state for System Controller
+ * communication. All fields are initialized during xe_sysctrl_init()
+ * and protected appropriately for concurrent access.
+ */
+struct xe_sysctrl {
+	/** @mmio: MMIO region for system control registers */
+	struct xe_mmio *mmio;
+
+	/** @cmd_lock: Mutex protecting mailbox command operations */
+	struct mutex cmd_lock;
+
+	/** @phase_bit: Message boundary phase toggle bit (0 or 1) */
+	bool phase_bit;
+};
+
+#endif