// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2004 - 2007 Paul Mundt */ #include <linux/mm.h> #include <linux/dma-noncoherent.h> #include <asm/cacheflush.h> #include <asm/addrspace.h> void arch_dma_prep_coherent(struct page *page, size_t size) { __flush_purge_region(page_address(page), size); } void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, enum dma_data_direction dir) { void *addr = sh_cacheop_vaddr(phys_to_virt(paddr)); switch (dir) { case DMA_FROM_DEVICE: /* invalidate only */ __flush_invalidate_region(addr, size); break; case DMA_TO_DEVICE: /* writeback only */ __flush_wback_region(addr, size); break; case DMA_BIDIRECTIONAL: /* writeback and invalidate */ __flush_purge_region(addr, size); break; default: BUG(); } }