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>

3 files changed, 43 insertions, 137 deletions

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index af76634f8d98..4be2f905198d 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -14,6 +14,7 @@ config BLACKFIN
         def_bool y
         select HAVE_ARCH_KGDB
         select HAVE_ARCH_TRACEHOOK
+        select HAVE_DMA_ATTRS
         select HAVE_DYNAMIC_FTRACE
         select HAVE_FTRACE_MCOUNT_RECORD
         select HAVE_FUNCTION_GRAPH_TRACER
diff --git a/arch/blackfin/include/asm/dma-mapping.h b/arch/blackfin/include/asm/dma-mapping.h
index 054d9ec57d9d..ea5a2e82db7c 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 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);