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authorChristoph Hellwig <hch@lst.de>2016-01-20 15:01:32 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-01-20 17:09:18 -0800
commit6f62097583e799040d6d18909b670b1e4dbb614d (patch)
tree8af751b0083030217216c7f667fef84bdc7e8335 /arch/blackfin/kernel
parenta34a517ac96c6910a3a0aab9513035bfbed0020c (diff)
downloadblackbird-op-linux-6f62097583e799040d6d18909b670b1e4dbb614d.tar.gz
blackbird-op-linux-6f62097583e799040d6d18909b670b1e4dbb614d.zip
blackfin: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Steven Miao <realmz6@gmail.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/blackfin/kernel')
-rw-r--r--arch/blackfin/kernel/dma-mapping.c52
1 files changed, 38 insertions, 14 deletions
diff --git a/arch/blackfin/kernel/dma-mapping.c b/arch/blackfin/kernel/dma-mapping.c
index df437e52d9df..771afe6e4264 100644
--- a/arch/blackfin/kernel/dma-mapping.c
+++ b/arch/blackfin/kernel/dma-mapping.c
@@ -78,8 +78,8 @@ static void __free_dma_pages(unsigned long addr, unsigned int pages)
spin_unlock_irqrestore(&dma_page_lock, flags);
}
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp)
+static void *bfin_dma_alloc(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs)
{
void *ret;
@@ -92,15 +92,12 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
return ret;
}
-EXPORT_SYMBOL(dma_alloc_coherent);
-void
-dma_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle)
+static void bfin_dma_free(struct device *dev, size_t size, void *vaddr,
+ dma_addr_t dma_handle, struct dma_attrs *attrs)
{
__free_dma_pages((unsigned long)vaddr, get_pages(size));
}
-EXPORT_SYMBOL(dma_free_coherent);
/*
* Streaming DMA mappings
@@ -112,9 +109,9 @@ void __dma_sync(dma_addr_t addr, size_t size,
}
EXPORT_SYMBOL(__dma_sync);
-int
-dma_map_sg(struct device *dev, struct scatterlist *sg_list, int nents,
- enum dma_data_direction direction)
+static int bfin_dma_map_sg(struct device *dev, struct scatterlist *sg_list,
+ int nents, enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
struct scatterlist *sg;
int i;
@@ -126,10 +123,10 @@ dma_map_sg(struct device *dev, struct scatterlist *sg_list, int nents,
return nents;
}
-EXPORT_SYMBOL(dma_map_sg);
-void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg_list,
- int nelems, enum dma_data_direction direction)
+static void bfin_dma_sync_sg_for_device(struct device *dev,
+ struct scatterlist *sg_list, int nelems,
+ enum dma_data_direction direction)
{
struct scatterlist *sg;
int i;
@@ -139,4 +136,31 @@ void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg_list,
__dma_sync(sg_dma_address(sg), sg_dma_len(sg), direction);
}
}
-EXPORT_SYMBOL(dma_sync_sg_for_device);
+
+static dma_addr_t bfin_dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
+{
+ dma_addr_t handle = (dma_addr_t)(page_address(page) + offset);
+
+ _dma_sync(handle, size, dir);
+ return handle;
+}
+
+static inline void bfin_dma_sync_single_for_device(struct device *dev,
+ dma_addr_t handle, size_t size, enum dma_data_direction dir)
+{
+ _dma_sync(handle, size, dir);
+}
+
+struct dma_map_ops bfin_dma_ops = {
+ .alloc = bfin_dma_alloc,
+ .free = bfin_dma_free,
+
+ .map_page = bfin_dma_map_page,
+ .map_sg = bfin_dma_map_sg,
+
+ .sync_single_for_device = bfin_dma_sync_single_for_device,
+ .sync_sg_for_device = bfin_dma_sync_sg_for_device,
+};
+EXPORT_SYMBOL(bfin_dma_ops);
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