From 5a1a67f1d7fef42eaa5a4cc3d48094fbec75d685 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 20 Jan 2016 15:01:41 -0800 Subject: nios2: convert to dma_map_ops Signed-off-by: Christoph Hellwig Cc: Ley Foon Tan Cc: Christian Borntraeger Cc: Joerg Roedel Cc: Sebastian Ott Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/nios2/include/asm/dma-mapping.h | 123 ++--------------------------------- 1 file changed, 6 insertions(+), 117 deletions(-) (limited to 'arch/nios2/include/asm') diff --git a/arch/nios2/include/asm/dma-mapping.h b/arch/nios2/include/asm/dma-mapping.h index b5567233f7f1..bec8ac8e6ad2 100644 --- a/arch/nios2/include/asm/dma-mapping.h +++ b/arch/nios2/include/asm/dma-mapping.h @@ -10,131 +10,20 @@ #ifndef _ASM_NIOS2_DMA_MAPPING_H #define _ASM_NIOS2_DMA_MAPPING_H -#include -#include -#include +extern struct dma_map_ops nios2_dma_ops; -static inline void __dma_sync_for_device(void *vaddr, size_t size, - enum dma_data_direction direction) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - switch (direction) { - case DMA_FROM_DEVICE: - invalidate_dcache_range((unsigned long)vaddr, - (unsigned long)(vaddr + size)); - break; - case DMA_TO_DEVICE: - /* - * We just need to flush the caches here , but Nios2 flush - * instruction will do both writeback and invalidate. - */ - case DMA_BIDIRECTIONAL: /* flush and invalidate */ - flush_dcache_range((unsigned long)vaddr, - (unsigned long)(vaddr + size)); - break; - default: - BUG(); - } -} - -static inline void __dma_sync_for_cpu(void *vaddr, size_t size, - enum dma_data_direction direction) -{ - switch (direction) { - case DMA_BIDIRECTIONAL: - case DMA_FROM_DEVICE: - invalidate_dcache_range((unsigned long)vaddr, - (unsigned long)(vaddr + size)); - break; - case DMA_TO_DEVICE: - break; - default: - BUG(); - } -} - -#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) - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag); - -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle); - -static inline dma_addr_t dma_map_single(struct device *dev, void *ptr, - size_t size, - enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); - __dma_sync_for_device(ptr, size, direction); - return virt_to_phys(ptr); -} - -static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, - size_t size, enum dma_data_direction direction) -{ -} - -extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction direction); -extern dma_addr_t dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, enum dma_data_direction direction); -extern void dma_unmap_page(struct device *dev, dma_addr_t dma_address, - size_t size, enum dma_data_direction direction); -extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg, - int nhwentries, enum dma_data_direction direction); -extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction); -extern void dma_sync_single_for_device(struct device *dev, - dma_addr_t dma_handle, size_t size, enum dma_data_direction direction); -extern void dma_sync_single_range_for_cpu(struct device *dev, - dma_addr_t dma_handle, unsigned long offset, size_t size, - enum dma_data_direction direction); -extern void dma_sync_single_range_for_device(struct device *dev, - dma_addr_t dma_handle, unsigned long offset, size_t size, - enum dma_data_direction direction); -extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction); -extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction); - -static inline int dma_supported(struct device *dev, u64 mask) -{ - return 1; -} - -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 int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; + return &nios2_dma_ops; } /* -* dma_alloc_noncoherent() returns non-cacheable memory, so there's no need to -* do any flushing here. -*/ + * dma_alloc_noncoherent() returns non-cacheable memory, so there's no need to + * do any flushing here. + */ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction) { } -/* drivers/base/dma-mapping.c */ -extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size); -extern int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size); - -#define dma_mmap_coherent(d, v, c, h, s) dma_common_mmap(d, v, c, h, s) -#define dma_get_sgtable(d, t, v, h, s) dma_common_get_sgtable(d, t, v, h, s) - #endif /* _ASM_NIOS2_DMA_MAPPING_H */ -- cgit