1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org> 7 */ 8#ifndef __ASM_MACH_JAZZ_DMA_COHERENCE_H 9#define __ASM_MACH_JAZZ_DMA_COHERENCE_H 10 11#include <asm/jazzdma.h> 12 13struct device; 14 15static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size) 16{ 17 return vdma_alloc(virt_to_phys(addr), size); 18} 19 20static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, 21 struct page *page) 22{ 23 return vdma_alloc(page_to_phys(page), PAGE_SIZE); 24} 25 26static inline unsigned long plat_dma_addr_to_phys(struct device *dev, 27 dma_addr_t dma_addr) 28{ 29 return vdma_log2phys(dma_addr); 30} 31 32static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr, 33 size_t size, enum dma_data_direction direction) 34{ 35 vdma_free(dma_addr); 36} 37 38static inline int plat_dma_supported(struct device *dev, u64 mask) 39{ 40 /* 41 * we fall back to GFP_DMA when the mask isn't all 1s, 42 * so we can't guarantee allocations that must be 43 * within a tighter range than GFP_DMA.. 44 */ 45 if (mask < DMA_BIT_MASK(24)) 46 return 0; 47 48 return 1; 49} 50 51static inline void plat_post_dma_flush(struct device *dev) 52{ 53} 54 55static inline int plat_device_is_coherent(struct device *dev) 56{ 57 return 0; 58} 59 60#endif /* __ASM_MACH_JAZZ_DMA_COHERENCE_H */ 61