/* * Copyright (C) 2006 Ralf Baechle * Copyright (C) 2009 Broadcom Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef __ASM_MACH_BMIPS_DMA_COHERENCE_H #define __ASM_MACH_BMIPS_DMA_COHERENCE_H #include #include #include struct device; extern dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size); extern dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page); extern unsigned long plat_dma_addr_to_phys(struct device *dev, dma_addr_t dma_addr); static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction direction) { } static inline int plat_dma_supported(struct device *dev, u64 mask) { /* * we fall back to GFP_DMA when the mask isn't all 1s, * so we can't guarantee allocations that must be * within a tighter range than GFP_DMA.. */ if (mask < DMA_BIT_MASK(24)) return 0; return 1; } static inline int plat_device_is_coherent(struct device *dev) { return 0; } #define plat_post_dma_flush bmips_post_dma_flush #endif /* __ASM_MACH_BMIPS_DMA_COHERENCE_H */ efslogtreecommitdiff
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