[RFC 01/29] drm/xe: Introduce xe_vma_op_prefetch_range struct for prefetch of ranges

[Matthew Brost]

On Fri, Mar 14, 2025 at 01:31:58PM +0530, Himal Prasad Ghimiray wrote:
> 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>

Reviewed-by: Matthew Brost <matthew.brost 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
>