1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_migrate.h b/drivers/gpu/drm/xe/xe_migrate.h
new file mode 100644
index 000000000000..951f19318ea4
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_migrate.h
@@ -0,0 +1,110 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _XE_MIGRATE_
+#define _XE_MIGRATE_
+
+#include <drm/drm_mm.h>
+
+struct dma_fence;
+struct iosys_map;
+struct ttm_resource;
+
+struct xe_bo;
+struct xe_gt;
+struct xe_exec_queue;
+struct xe_migrate;
+struct xe_migrate_pt_update;
+struct xe_sync_entry;
+struct xe_pt;
+struct xe_tile;
+struct xe_vm;
+struct xe_vm_pgtable_update;
+struct xe_vma;
+
+/**
+ * struct xe_migrate_pt_update_ops - Callbacks for the
+ * xe_migrate_update_pgtables() function.
+ */
+struct xe_migrate_pt_update_ops {
+	/**
+	 * @populate: Populate a command buffer or page-table with ptes.
+	 * @pt_update: Embeddable callback argument.
+	 * @tile: The tile for the current operation.
+	 * @map: struct iosys_map into the memory to be populated.
+	 * @pos: If @map is NULL, map into the memory to be populated.
+	 * @ofs: qword offset into @map, unused if @map is NULL.
+	 * @num_qwords: Number of qwords to write.
+	 * @update: Information about the PTEs to be inserted.
+	 *
+	 * This interface is intended to be used as a callback into the
+	 * page-table system to populate command buffers or shared
+	 * page-tables with PTEs.
+	 */
+	void (*populate)(struct xe_migrate_pt_update *pt_update,
+			 struct xe_tile *tile, struct iosys_map *map,
+			 void *pos, u32 ofs, u32 num_qwords,
+			 const struct xe_vm_pgtable_update *update);
+
+	/**
+	 * @pre_commit: Callback to be called just before arming the
+	 * sched_job.
+	 * @pt_update: Pointer to embeddable callback argument.
+	 *
+	 * Return: 0 on success, negative error code on error.
+	 */
+	int (*pre_commit)(struct xe_migrate_pt_update *pt_update);
+};
+
+/**
+ * struct xe_migrate_pt_update - Argument to the
+ * struct xe_migrate_pt_update_ops callbacks.
+ *
+ * Intended to be subclassed to support additional arguments if necessary.
+ */
+struct xe_migrate_pt_update {
+	/** @ops: Pointer to the struct xe_migrate_pt_update_ops callbacks */
+	const struct xe_migrate_pt_update_ops *ops;
+	/** @vma: The vma we're updating the pagetable for. */
+	struct xe_vma *vma;
+	/** @job: The job if a GPU page-table update. NULL otherwise */
+	struct xe_sched_job *job;
+	/** @start: Start of update for the range fence */
+	u64 start;
+	/** @last: Last of update for the range fence */
+	u64 last;
+	/** @tile_id: Tile ID of the update */
+	u8 tile_id;
+};
+
+struct xe_migrate *xe_migrate_init(struct xe_tile *tile);
+
+struct dma_fence *xe_migrate_copy(struct xe_migrate *m,
+				  struct xe_bo *src_bo,
+				  struct xe_bo *dst_bo,
+				  struct ttm_resource *src,
+				  struct ttm_resource *dst,
+				  bool copy_only_ccs);
+
+struct dma_fence *xe_migrate_clear(struct xe_migrate *m,
+				   struct xe_bo *bo,
+				   struct ttm_resource *dst);
+
+struct xe_vm *xe_migrate_get_vm(struct xe_migrate *m);
+
+struct dma_fence *
+xe_migrate_update_pgtables(struct xe_migrate *m,
+			   struct xe_vm *vm,
+			   struct xe_bo *bo,
+			   struct xe_exec_queue *q,
+			   const struct xe_vm_pgtable_update *updates,
+			   u32 num_updates,
+			   struct xe_sync_entry *syncs, u32 num_syncs,
+			   struct xe_migrate_pt_update *pt_update);
+
+void xe_migrate_wait(struct xe_migrate *m);
+
+struct xe_exec_queue *xe_tile_migrate_engine(struct xe_tile *tile);
+#endif