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-rw-r--r--kernel/dma/direct.c37
1 files changed, 8 insertions, 29 deletions
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index 85d8286a0ba2..79da61b49fa4 100644
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -223,6 +223,7 @@ void dma_direct_sync_single_for_device(struct device *dev,
if (!dev_is_dma_coherent(dev))
arch_sync_dma_for_device(dev, paddr, size, dir);
}
+EXPORT_SYMBOL(dma_direct_sync_single_for_device);
void dma_direct_sync_sg_for_device(struct device *dev,
struct scatterlist *sgl, int nents, enum dma_data_direction dir)
@@ -240,6 +241,7 @@ void dma_direct_sync_sg_for_device(struct device *dev,
dir);
}
}
+EXPORT_SYMBOL(dma_direct_sync_sg_for_device);
#endif
#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \
@@ -258,6 +260,7 @@ void dma_direct_sync_single_for_cpu(struct device *dev,
if (unlikely(is_swiotlb_buffer(paddr)))
swiotlb_tbl_sync_single(dev, paddr, size, dir, SYNC_FOR_CPU);
}
+EXPORT_SYMBOL(dma_direct_sync_single_for_cpu);
void dma_direct_sync_sg_for_cpu(struct device *dev,
struct scatterlist *sgl, int nents, enum dma_data_direction dir)
@@ -277,6 +280,7 @@ void dma_direct_sync_sg_for_cpu(struct device *dev,
if (!dev_is_dma_coherent(dev))
arch_sync_dma_for_cpu_all(dev);
}
+EXPORT_SYMBOL(dma_direct_sync_sg_for_cpu);
void dma_direct_unmap_page(struct device *dev, dma_addr_t addr,
size_t size, enum dma_data_direction dir, unsigned long attrs)
@@ -289,6 +293,7 @@ void dma_direct_unmap_page(struct device *dev, dma_addr_t addr,
if (unlikely(is_swiotlb_buffer(phys)))
swiotlb_tbl_unmap_single(dev, phys, size, dir, attrs);
}
+EXPORT_SYMBOL(dma_direct_unmap_page);
void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sgl,
int nents, enum dma_data_direction dir, unsigned long attrs)
@@ -300,11 +305,7 @@ void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sgl,
dma_direct_unmap_page(dev, sg->dma_address, sg_dma_len(sg), dir,
attrs);
}
-#else
-void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sgl,
- int nents, enum dma_data_direction dir, unsigned long attrs)
-{
-}
+EXPORT_SYMBOL(dma_direct_unmap_sg);
#endif
static inline bool dma_direct_possible(struct device *dev, dma_addr_t dma_addr,
@@ -331,6 +332,7 @@ dma_addr_t dma_direct_map_page(struct device *dev, struct page *page,
arch_sync_dma_for_device(dev, phys, size, dir);
return dma_addr;
}
+EXPORT_SYMBOL(dma_direct_map_page);
int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
enum dma_data_direction dir, unsigned long attrs)
@@ -352,6 +354,7 @@ out_unmap:
dma_direct_unmap_sg(dev, sgl, i, dir, attrs | DMA_ATTR_SKIP_CPU_SYNC);
return 0;
}
+EXPORT_SYMBOL(dma_direct_map_sg);
/*
* Because 32-bit DMA masks are so common we expect every architecture to be
@@ -372,27 +375,3 @@ int dma_direct_supported(struct device *dev, u64 mask)
return mask >= phys_to_dma(dev, min_mask);
}
-
-const struct dma_map_ops dma_direct_ops = {
- .alloc = dma_direct_alloc,
- .free = dma_direct_free,
- .map_page = dma_direct_map_page,
- .map_sg = dma_direct_map_sg,
-#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \
- defined(CONFIG_SWIOTLB)
- .sync_single_for_device = dma_direct_sync_single_for_device,
- .sync_sg_for_device = dma_direct_sync_sg_for_device,
-#endif
-#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \
- defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL) || \
- defined(CONFIG_SWIOTLB)
- .sync_single_for_cpu = dma_direct_sync_single_for_cpu,
- .sync_sg_for_cpu = dma_direct_sync_sg_for_cpu,
- .unmap_page = dma_direct_unmap_page,
- .unmap_sg = dma_direct_unmap_sg,
-#endif
- .get_required_mask = dma_direct_get_required_mask,
- .dma_supported = dma_direct_supported,
- .cache_sync = arch_dma_cache_sync,
-};
-EXPORT_SYMBOL(dma_direct_ops);