drm/xe: Add xe_tlb_inval structure

Extract TLB invalidation state into a structure to decouple TLB
invalidations from the GT, allowing the structure to be embedded
anywhere in the driver.

Signed-off-by: Stuart Summers <stuart.summers@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250826182911.392550-5-stuart.summers@intel.com

Author: mbrost05

drivers/gpu/drm/xe/xe_gt_tlb_inval_types.h

@@ -6,10 +6,44 @@
 #ifndef _XE_GT_TLB_INVAL_TYPES_H_
 #define _XE_GT_TLB_INVAL_TYPES_H_
 
+#include <linux/workqueue.h>
 #include <linux/dma-fence.h>
 
 struct xe_gt;
 
+/** struct xe_tlb_inval - TLB invalidation client */
+struct xe_tlb_inval {
+	/** @tlb_inval.seqno: TLB invalidation seqno, protected by CT lock */
+#define TLB_INVALIDATION_SEQNO_MAX	0x100000
+	int seqno;
+	/** @tlb_invalidation.seqno_lock: protects @tlb_invalidation.seqno */
+	struct mutex seqno_lock;
+	/**
+	 * @tlb_inval.seqno_recv: last received TLB invalidation seqno,
+	 * protected by CT lock
+	 */
+	int seqno_recv;
+	/**
+	 * @tlb_inval.pending_fences: list of pending fences waiting TLB
+	 * invaliations, protected by CT lock
+	 */
+	struct list_head pending_fences;
+	/**
+	 * @tlb_inval.pending_lock: protects @tlb_inval.pending_fences
+	 * and updating @tlb_inval.seqno_recv.
+	 */
+	spinlock_t pending_lock;
+	/**
+	 * @tlb_inval.fence_tdr: schedules a delayed call to
+	 * xe_gt_tlb_fence_timeout after the timeut interval is over.
+	 */
+	struct delayed_work fence_tdr;
+	/** @wtlb_invalidation.wq: schedules GT TLB invalidation jobs */
+	struct workqueue_struct *job_wq;
+	/** @tlb_inval.lock: protects TLB invalidation fences */
+	spinlock_t lock;
+};
+
 /**
  * struct xe_gt_tlb_inval_fence - XE GT TLB invalidation fence
  *

drivers/gpu/drm/xe/xe_gt_types.h

@@ -12,6 +12,7 @@
 #include "xe_gt_sriov_pf_types.h"
 #include "xe_gt_sriov_vf_types.h"
 #include "xe_gt_stats_types.h"
+#include "xe_gt_tlb_inval_types.h"
 #include "xe_hw_engine_types.h"
 #include "xe_hw_fence_types.h"
 #include "xe_oa_types.h"
@@ -186,37 +187,7 @@ struct xe_gt {
 	} reset;
 
 	/** @tlb_inval: TLB invalidation state */
-	struct {
-		/** @tlb_inval.seqno: TLB invalidation seqno, protected by CT lock */
-#define TLB_INVALIDATION_SEQNO_MAX	0x100000
-		int seqno;
-		/** @tlb_invalidation.seqno_lock: protects @tlb_invalidation.seqno */
-		struct mutex seqno_lock;
-		/**
-		 * @tlb_inval.seqno_recv: last received TLB invalidation seqno,
-		 * protected by CT lock
-		 */
-		int seqno_recv;
-		/**
-		 * @tlb_inval.pending_fences: list of pending fences waiting TLB
-		 * invaliations, protected by CT lock
-		 */
-		struct list_head pending_fences;
-		/**
-		 * @tlb_inval.pending_lock: protects @tlb_inval.pending_fences
-		 * and updating @tlb_inval.seqno_recv.
-		 */
-		spinlock_t pending_lock;
-		/**
-		 * @tlb_inval.fence_tdr: schedules a delayed call to
-		 * xe_gt_tlb_fence_timeout after the timeut interval is over.
-		 */
-		struct delayed_work fence_tdr;
-		/** @wtlb_invalidation.wq: schedules GT TLB invalidation jobs */
-		struct workqueue_struct *job_wq;
-		/** @tlb_inval.lock: protects TLB invalidation fences */
-		spinlock_t lock;
-	} tlb_inval;
+	struct xe_tlb_inval tlb_inval;
 
 	/**
 	 * @ccs_mode: Number of compute engines enabled.