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