[RFC 01/12] drm/xe: Introduce xe_vma_op_prefetch_range struct for prefetch of ranges

[Himal Prasad Ghimiray]

Add xe_vma_op_prefetch_range struct for svm ranges prefetching, including
an xarray of SVM range pointers, range count, and target memory region.

Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray at intel.com>
---
 drivers/gpu/drm/xe/xe_vm_types.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_vm_types.h b/drivers/gpu/drm/xe/xe_vm_types.h
index 84fa41b9fa20..93224a87ab03 100644
--- a/drivers/gpu/drm/xe/xe_vm_types.h
+++ b/drivers/gpu/drm/xe/xe_vm_types.h
@@ -372,6 +372,16 @@ struct xe_vma_op_unmap_range {
 	struct xe_svm_range *range;
 };
 
+/** struct xe_vma_op_prefetch_range - VMA prefetch range operation */
+struct xe_vma_op_prefetch_range {
+	/** @range: xarray for SVM ranges data */
+	struct xarray range;
+	/** @ranges_count: number of svm ranges to map */
+	u32 ranges_count;
+	/** @region: memory region to prefetch to */
+	u32 region;
+};
+
 /** enum xe_vma_op_flags - flags for VMA operation */
 enum xe_vma_op_flags {
 	/** @XE_VMA_OP_COMMITTED: VMA operation committed */
@@ -414,6 +424,8 @@ struct xe_vma_op {
 		struct xe_vma_op_map_range map_range;
 		/** @unmap_range: VMA unmap range operation specific data */
 		struct xe_vma_op_unmap_range unmap_range;
+		/** @prefetch: VMA prefetch range operation specific data */
+		struct xe_vma_op_prefetch_range prefetch_range;
 	};
 };
 
-- 
2.34.1