diff options
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/include/asm/dma-mapping.h | 9 | ||||
| -rw-r--r-- | arch/sh/kernel/dma-nommu.c | 17 | ||||
| -rw-r--r-- | arch/sh/mm/consistent.c | 6 |
3 files changed, 19 insertions, 13 deletions
diff --git a/arch/sh/include/asm/dma-mapping.h b/arch/sh/include/asm/dma-mapping.h index 9b06be07db4d..b46194ecef17 100644 --- a/arch/sh/include/asm/dma-mapping.h +++ b/arch/sh/include/asm/dma-mapping.h @@ -9,8 +9,10 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) return dma_ops; } -void dma_cache_sync(struct device *dev, void *vaddr, size_t size, - enum dma_data_direction dir); +static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, + enum dma_data_direction dir) +{ +} /* arch/sh/mm/consistent.c */ extern void *dma_generic_alloc_coherent(struct device *dev, size_t size, @@ -20,4 +22,7 @@ extern void dma_generic_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle, unsigned long attrs); +void sh_sync_dma_for_device(void *vaddr, size_t size, + enum dma_data_direction dir); + #endif /* __ASM_SH_DMA_MAPPING_H */ diff --git a/arch/sh/kernel/dma-nommu.c b/arch/sh/kernel/dma-nommu.c index d24c707b2181..62b485107eae 100644 --- a/arch/sh/kernel/dma-nommu.c +++ b/arch/sh/kernel/dma-nommu.c @@ -9,6 +9,7 @@ */ #include <linux/dma-mapping.h> #include <linux/io.h> +#include <asm/cacheflush.h> static dma_addr_t nommu_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, @@ -20,7 +21,7 @@ static dma_addr_t nommu_map_page(struct device *dev, struct page *page, WARN_ON(size == 0); if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) - dma_cache_sync(dev, page_address(page) + offset, size, dir); + sh_sync_dma_for_device(page_address(page) + offset, size, dir); return addr; } @@ -38,7 +39,7 @@ static int nommu_map_sg(struct device *dev, struct scatterlist *sg, BUG_ON(!sg_page(s)); if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) - dma_cache_sync(dev, sg_virt(s), s->length, dir); + sh_sync_dma_for_device(sg_virt(s), s->length, dir); s->dma_address = sg_phys(s); s->dma_length = s->length; @@ -48,20 +49,20 @@ static int nommu_map_sg(struct device *dev, struct scatterlist *sg, } #ifdef CONFIG_DMA_NONCOHERENT -static void nommu_sync_single(struct device *dev, dma_addr_t addr, +static void nommu_sync_single_for_device(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir) { - dma_cache_sync(dev, phys_to_virt(addr), size, dir); + sh_sync_dma_for_device(phys_to_virt(addr), size, dir); } -static void nommu_sync_sg(struct device *dev, struct scatterlist *sg, +static void nommu_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction dir) { struct scatterlist *s; int i; for_each_sg(sg, s, nelems, i) - dma_cache_sync(dev, sg_virt(s), s->length, dir); + sh_sync_dma_for_device(sg_virt(s), s->length, dir); } #endif @@ -71,8 +72,8 @@ const struct dma_map_ops nommu_dma_ops = { .map_page = nommu_map_page, .map_sg = nommu_map_sg, #ifdef CONFIG_DMA_NONCOHERENT - .sync_single_for_device = nommu_sync_single, - .sync_sg_for_device = nommu_sync_sg, + .sync_single_for_device = nommu_sync_single_for_device, + .sync_sg_for_device = nommu_sync_sg_for_device, #endif .is_phys = 1, }; diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c index d1275adfa0ef..6ea3aab508f2 100644 --- a/arch/sh/mm/consistent.c +++ b/arch/sh/mm/consistent.c @@ -49,7 +49,7 @@ void *dma_generic_alloc_coherent(struct device *dev, size_t size, * Pages from the page allocator may have data present in * cache. So flush the cache before using uncached memory. */ - dma_cache_sync(dev, ret, size, DMA_BIDIRECTIONAL); + sh_sync_dma_for_device(ret, size, DMA_BIDIRECTIONAL); ret_nocache = (void __force *)ioremap_nocache(virt_to_phys(ret), size); if (!ret_nocache) { @@ -78,7 +78,7 @@ void dma_generic_free_coherent(struct device *dev, size_t size, iounmap(vaddr); } -void dma_cache_sync(struct device *dev, void *vaddr, size_t size, +void sh_sync_dma_for_device(void *vaddr, size_t size, enum dma_data_direction direction) { void *addr; @@ -100,7 +100,7 @@ void dma_cache_sync(struct device *dev, void *vaddr, size_t size, BUG(); } } -EXPORT_SYMBOL(dma_cache_sync); +EXPORT_SYMBOL(sh_sync_dma_for_device); static int __init memchunk_setup(char *str) { |