#ifndef _ASM_IA64_DMA_MAPPING_H #define _ASM_IA64_DMA_MAPPING_H /* * Copyright (C) 2003-2004 Hewlett-Packard Co * David Mosberger-Tang <davidm@hpl.hp.com> */ #include <asm/machvec.h> #include <linux/scatterlist.h> #include <asm/swiotlb.h> #include <linux/dma-debug.h> #define ARCH_HAS_DMA_GET_REQUIRED_MASK #define DMA_ERROR_CODE 0 extern struct dma_map_ops *dma_ops; extern struct ia64_machine_vector ia64_mv; extern void set_iommu_machvec(void); extern void machvec_dma_sync_single(struct device *, dma_addr_t, size_t, enum dma_data_direction); extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int, enum dma_data_direction); #define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL) static inline void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *daddr, gfp_t gfp, struct dma_attrs *attrs) { struct dma_map_ops *ops = platform_dma_get_ops(dev); void *caddr; caddr = ops->alloc(dev, size, daddr, gfp, attrs); debug_dma_alloc_coherent(dev, size, *daddr, caddr); return caddr; } #define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL) static inline void dma_free_attrs(struct device *dev, size_t size, void *caddr, dma_addr_t daddr, struct dma_attrs *attrs) { struct dma_map_ops *ops = platform_dma_get_ops(dev); debug_dma_free_coherent(dev, size, caddr, daddr); ops->free(dev, size, caddr, daddr, attrs); } #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) #define get_dma_ops(dev) platform_dma_get_ops(dev) #include <asm-generic/dma-mapping-common.h> static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr) { struct dma_map_ops *ops = platform_dma_get_ops(dev); return ops->mapping_error(dev, daddr); } static inline int dma_supported(struct device *dev, u64 mask) { struct dma_map_ops *ops = platform_dma_get_ops(dev); return ops->dma_supported(dev, mask); } static inline int dma_set_mask (struct device *dev, u64 mask) { if (!dev->dma_mask || !dma_supported(dev, mask)) return -EIO; *dev->dma_mask = mask; return 0; } static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) { if (!dev->dma_mask) return 0; return addr + size - 1 <= *dev->dma_mask; } static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) { return paddr; } static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) { return daddr; } static inline void dma_cache_sync (struct device *dev, void *vaddr, size_t size, enum dma_data_direction dir) { /* * IA-64 is cache-coherent, so this is mostly a no-op. However, we do need to * ensure that dma_cache_sync() enforces order, hence the mb(). */ mb(); } #endif /* _ASM_IA64_DMA_MAPPING_H */