270 	struct strbuf *strbuf;  in dma_4u_map_page()  local
278 	strbuf = dev->archdata.stc;  in dma_4u_map_page()
301 	if (strbuf->strbuf_enabled)  in dma_4u_map_page()
321 static void strbuf_flush(struct strbuf *strbuf, struct iommu *iommu,  in strbuf_flush()  argument
327 	if (strbuf->strbuf_ctxflush &&  in strbuf_flush()
332 		flushreg = strbuf->strbuf_ctxflush;  in strbuf_flush()
333 		matchreg = STC_CTXMATCH_ADDR(strbuf, ctx);  in strbuf_flush()
358 			iommu_write(strbuf->strbuf_pflush, vaddr);  in strbuf_flush()
369 	STC_FLUSHFLAG_INIT(strbuf);  in strbuf_flush()
370 	iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);  in strbuf_flush()
374 	while (!STC_FLUSHFLAG_SET(strbuf)) {  in strbuf_flush()
392 	struct strbuf *strbuf;  in dma_4u_unmap_page()  local
403 	strbuf = dev->archdata.stc;  in dma_4u_unmap_page()
419 	if (strbuf->strbuf_enabled && !(attrs & DMA_ATTR_SKIP_CPU_SYNC))  in dma_4u_unmap_page()
420 		strbuf_flush(strbuf, iommu, bus_addr, ctx,  in dma_4u_unmap_page()
443 	struct strbuf *strbuf;  in dma_4u_map_sg()  local
450 	strbuf = dev->archdata.stc;  in dma_4u_map_sg()
460 	if (strbuf->strbuf_enabled)  in dma_4u_map_sg()
615 	struct strbuf *strbuf;  in dma_4u_unmap_sg()  local
621 	strbuf = dev->archdata.stc;  in dma_4u_unmap_sg()
644 		if (strbuf->strbuf_enabled && !(attrs & DMA_ATTR_SKIP_CPU_SYNC))  in dma_4u_unmap_sg()
645 			strbuf_flush(strbuf, iommu, dma_handle, ctx,  in dma_4u_unmap_sg()
666 	struct strbuf *strbuf;  in dma_4u_sync_single_for_cpu()  local
670 	strbuf = dev->archdata.stc;  in dma_4u_sync_single_for_cpu()
672 	if (!strbuf->strbuf_enabled)  in dma_4u_sync_single_for_cpu()
684 	    strbuf->strbuf_ctxflush) {  in dma_4u_sync_single_for_cpu()
694 	strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);  in dma_4u_sync_single_for_cpu()
704 	struct strbuf *strbuf;  in dma_4u_sync_sg_for_cpu()  local
710 	strbuf = dev->archdata.stc;  in dma_4u_sync_sg_for_cpu()
712 	if (!strbuf->strbuf_enabled)  in dma_4u_sync_sg_for_cpu()
720 	    strbuf->strbuf_ctxflush) {  in dma_4u_sync_sg_for_cpu()
740 	strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);  in dma_4u_sync_sg_for_cpu()