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33 lines
782 B
33 lines
782 B
// 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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