71  * calculate a sequence of operations to satisfy a given map or unmap request.
80  * containing map, unmap and remap operations for a given newly requested
87  * amount of unmap operations, a maximum of two remap operations and a single
95  * &drm_gpuva to unmap is physically contiguous with the original mapping
102  * one unmap operation and one or two map operations, such that drivers can
110  * to call back into the driver in order to unmap a range of GPU VA space. The
112  * enclosed by the given range unmap operations are created. For mappings which
410  * &drm_gpuva_op in order to satisfy a given map or unmap request and how to
458  *				va = op->remap.unmap->va;
488  *				va = op->unmap->va;
492  *				drm_gpuva_unmap(&op->unmap);
574  *		drm_gpuva_unlink(op->remap.unmap->va);
575  *		kfree(op->remap.unmap->va);
592  *		drm_gpuva_unlink(op->unmap.va);
593  *		drm_gpuva_unmap(&op->unmap);
594  *		kfree(op->unmap.va);
995 	struct drm_gpuva *curr = op->unmap->va;  in drm_gpuva_remap()
1046 	    struct drm_gpuva_op_unmap *unmap)  in op_remap_cb()  argument
1055 	r->unmap = unmap;  in op_remap_cb()
1067 	op.unmap.va = va;  in op_unmap_cb()
1068 	op.unmap.keep = merge;  in op_unmap_cb()
1255 			struct drm_gpuva_op_unmap unmap = { .va = va };  in __drm_gpuva_sm_unmap()  local
1260 					  &unmap);  in __drm_gpuva_sm_unmap()
1295  * A sequence of callbacks can contain map, unmap and remap operations, but
1299  * There can be an arbitrary amount of unmap operations, a maximum of two remap
1324  * drm_gpuva_sm_unmap() - creates the &drm_gpuva_ops to split on unmap
1327  * @req_addr: the start address of the range to unmap
1328  * @req_range: the range of the mappings to unmap
1332  * unmap and, if required, split existent mappings.
1342  * A sequence of callbacks can contain unmap and remap operations, depending on
1345  * There can be an arbitrary amount of unmap operations and a maximum of two
1416 		r->unmap = kmemdup(__r->unmap, sizeof(*r->unmap),  in drm_gpuva_sm_step()
1418 		if (unlikely(!r->unmap))  in drm_gpuva_sm_step()
1441 	kfree(op->remap.unmap);  in drm_gpuva_sm_step()
1468  * in the given order. It can contain map, unmap and remap operations, but it
1472  * There can be an arbitrary amount of unmap operations, a maximum of two remap
1525  * unmap
1527  * @req_addr: the start address of the range to unmap
1528  * @req_range: the range of the mappings to unmap
1531  * required, splitting of the mappings overlapping the unmap range.
1534  * in the given order. It can contain unmap and remap operations, depending on
1537  * There can be an arbitrary amount of unmap operations and a maximum of two
1540  * Note that before calling this function again with another range to unmap it
1640  * drm_gpuva_gem_unmap_ops_create() - creates the &drm_gpuva_ops to unmap a GEM
1642  * @obj: the &drm_gem_object to unmap
1648  * arbitrary amount of unmap operations.
1683 		op->unmap.va = va;  in drm_gpuva_gem_unmap_ops_create()
1715 			kfree(op->remap.unmap);  in drm_gpuva_ops_free()