358 	struct strbuf *strbuf;  in dma_4u_map_page()  local
366 	strbuf = dev->archdata.stc;  in dma_4u_map_page()
389 	if (strbuf->strbuf_enabled)  in dma_4u_map_page()
409 static void strbuf_flush(struct strbuf *strbuf, struct iommu *iommu,  in strbuf_flush()  argument
415 	if (strbuf->strbuf_ctxflush &&  in strbuf_flush()
420 		flushreg = strbuf->strbuf_ctxflush;  in strbuf_flush()
421 		matchreg = STC_CTXMATCH_ADDR(strbuf, ctx);  in strbuf_flush()
446 			iommu_write(strbuf->strbuf_pflush, vaddr);  in strbuf_flush()
457 	STC_FLUSHFLAG_INIT(strbuf);  in strbuf_flush()
458 	iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);  in strbuf_flush()
462 	while (!STC_FLUSHFLAG_SET(strbuf)) {  in strbuf_flush()
480 	struct strbuf *strbuf;  in dma_4u_unmap_page()  local
491 	strbuf = dev->archdata.stc;  in dma_4u_unmap_page()
507 	if (strbuf->strbuf_enabled)  in dma_4u_unmap_page()
508 		strbuf_flush(strbuf, iommu, bus_addr, ctx,  in dma_4u_unmap_page()
532 	struct strbuf *strbuf;  in dma_4u_map_sg()  local
539 	strbuf = dev->archdata.stc;  in dma_4u_map_sg()
549 	if (strbuf->strbuf_enabled)  in dma_4u_map_sg()
700 	struct strbuf *strbuf;  in dma_4u_unmap_sg()  local
706 	strbuf = dev->archdata.stc;  in dma_4u_unmap_sg()
730 		if (strbuf->strbuf_enabled)  in dma_4u_unmap_sg()
731 			strbuf_flush(strbuf, iommu, dma_handle, ctx,  in dma_4u_unmap_sg()
750 	struct strbuf *strbuf;  in dma_4u_sync_single_for_cpu()  local
754 	strbuf = dev->archdata.stc;  in dma_4u_sync_single_for_cpu()
756 	if (!strbuf->strbuf_enabled)  in dma_4u_sync_single_for_cpu()
768 	    strbuf->strbuf_ctxflush) {  in dma_4u_sync_single_for_cpu()
777 	strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);  in dma_4u_sync_single_for_cpu()
787 	struct strbuf *strbuf;  in dma_4u_sync_sg_for_cpu()  local
793 	strbuf = dev->archdata.stc;  in dma_4u_sync_sg_for_cpu()
795 	if (!strbuf->strbuf_enabled)  in dma_4u_sync_sg_for_cpu()
803 	    strbuf->strbuf_ctxflush) {  in dma_4u_sync_sg_for_cpu()
822 	strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);  in dma_4u_sync_sg_for_cpu()