Commit 594bb930 authored by Matthew Brost's avatar Matthew Brost
Browse files

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: default avatarStuart Summers <stuart.summers@intel.com>
Reviewed-by: default avatarStuart Summers <stuart.summers@intel.com>
Signed-off-by: default avatarMatthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250826182911.392550-5-stuart.summers@intel.com
parent c697ddcf

drivers/gpu/drm/xe/xe_gt_tlb_inval_types.h

+34 −0
Original line number Diff line number Diff line
@@ -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

+2 −31
Original line number Diff line number Diff line
@@ -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.