Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
arch/blackfin/Kconfig | 1 +
arch/blackfin/include/asm/dma-mapping.h | 127 +-------------------------------
arch/blackfin/kernel/dma-mapping.c | 52 +++++++++----
3 files changed, 43 insertions(+), 137 deletions(-)
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index af76634..d3c68dd 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -40,6 +40,7 @@ config BLACKFIN
select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
select HAVE_DEBUG_STACKOVERFLOW
+ select HAVE_DMA_ATTRS
config GENERIC_CSUM
def_bool y
diff --git a/arch/blackfin/include/asm/dma-mapping.h b/arch/blackfin/include/asm/dma-mapping.h
index 054d9ec..ea5a2e8 100644
--- a/arch/blackfin/include/asm/dma-mapping.h
+++ b/arch/blackfin/include/asm/dma-mapping.h
@@ -8,36 +8,6 @@
#define _BLACKFIN_DMA_MAPPING_H
#include <asm/cacheflush.h>
-struct scatterlist;
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp);
-void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle);
-
-/*
- * Now for the API extensions over the pci_ one
- */
-#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 dma_supported(d, m) (1)
-
-static inline int
-dma_set_mask(struct device *dev, u64 dma_mask)
-{
- if (!dev->dma_mask || !dma_supported(dev, dma_mask))
- return -EIO;
-
- *dev->dma_mask = dma_mask;
-
- return 0;
-}
-
-static inline int
-dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- return 0;
-}
extern void
__dma_sync(dma_addr_t addr, size_t size, enum dma_data_direction dir);
@@ -66,102 +36,13 @@ _dma_sync(dma_addr_t addr, size_t size, enum dma_data_direction dir)
__dma_sync(addr, size, dir);
}
-static inline dma_addr_t
-dma_map_single(struct device *dev, void *ptr, size_t size,
- enum dma_data_direction dir)
-{
- _dma_sync((dma_addr_t)ptr, size, dir);
- return (dma_addr_t) ptr;
-}
-
-static inline dma_addr_t
-dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction dir)
-{
- return dma_map_single(dev, page_address(page) + offset, size, dir);
-}
-
-static inline void
-dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
- enum dma_data_direction dir)
-{
- BUG_ON(!valid_dma_direction(dir));
-}
-
-static inline void
-dma_unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size,
- enum dma_data_direction dir)
-{
- dma_unmap_single(dev, dma_addr, size, dir);
-}
-
-extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir);
-
-static inline void
-dma_unmap_sg(struct device *dev, struct scatterlist *sg,
- int nhwentries, enum dma_data_direction dir)
-{
- BUG_ON(!valid_dma_direction(dir));
-}
-
-static inline void
-dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t handle,
- unsigned long offset, size_t size,
- enum dma_data_direction dir)
-{
- BUG_ON(!valid_dma_direction(dir));
-}
-
-static inline void
-dma_sync_single_range_for_device(struct device *dev, dma_addr_t handle,
- unsigned long offset, size_t size,
- enum dma_data_direction dir)
-{
- _dma_sync(handle + offset, size, dir);
-}
+extern struct dma_map_ops bfin_dma_ops;
-static inline void
-dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, size_t size,
- enum dma_data_direction dir)
+static inline struct dma_map_ops *get_dma_ops(struct device *dev)
{
- dma_sync_single_range_for_cpu(dev, handle, 0, size, dir);
+ return &bfin_dma_ops;
}
-static inline void
-dma_sync_single_for_device(struct device *dev, dma_addr_t handle, size_t size,
- enum dma_data_direction dir)
-{
- dma_sync_single_range_for_device(dev, handle, 0, size, dir);
-}
-
-static inline void
-dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir)
-{
- BUG_ON(!valid_dma_direction(dir));
-}
-
-extern void
-dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction dir);
-
-static inline void
-dma_cache_sync(struct device *dev, void *vaddr, size_t size,
- enum dma_data_direction dir)
-{
- _dma_sync((dma_addr_t)vaddr, size, dir);
-}
-
-/* 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)
+#include <asm-generic/dma-mapping-common.h>
#endif /* _BLACKFIN_DMA_MAPPING_H */
diff --git a/arch/blackfin/kernel/dma-mapping.c b/arch/blackfin/kernel/dma-mapping.c
index df437e5..771afe6 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);
--
1.9.1
--
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