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// 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();
}
}
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