x86: dma-ops on highmem fix

[deliverable/linux.git] / include / asm-x86 / dma-mapping.h

diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index a466470f130d1c42fc7c7e588ab500336b0c1c79..b331a8d3a7cf01a40aad2b4fca7e6997494f8a2f 100644 (file)
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -16,10 +16,10 @@ struct dma_mapping_ops {
                                dma_addr_t *dma_handle, gfp_t gfp);
        void            (*free_coherent)(struct device *dev, size_t size,
                                void *vaddr, dma_addr_t dma_handle);
-       dma_addr_t      (*map_single)(struct device *hwdev, void *ptr,
+       dma_addr_t      (*map_single)(struct device *hwdev, phys_addr_t ptr,
                                size_t size, int direction);
        /* like map_single, but doesn't check the device mask */
-       dma_addr_t      (*map_simple)(struct device *hwdev, char *ptr,
+       dma_addr_t      (*map_simple)(struct device *hwdev, phys_addr_t ptr,
                                size_t size, int direction);
        void            (*unmap_single)(struct device *dev, dma_addr_t addr,
                                size_t size, int direction);
@@ -52,6 +52,16 @@ struct dma_mapping_ops {
 
 extern const struct dma_mapping_ops *dma_ops;
 
+#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)
+
+void *dma_alloc_coherent(struct device *dev, size_t size,
+                          dma_addr_t *dma_handle, gfp_t flag);
+
+void dma_free_coherent(struct device *dev, size_t size,
+                        void *vaddr, dma_addr_t dma_handle);
+
+
 #ifdef CONFIG_X86_32
 # include "dma-mapping_32.h"
 #else
@@ -63,7 +73,7 @@ dma_map_single(struct device *hwdev, void *ptr, size_t size,
               int direction)
 {
        BUG_ON(!valid_dma_direction(direction));
-       return dma_ops->map_single(hwdev, ptr, size, direction);
+       return dma_ops->map_single(hwdev, virt_to_phys(ptr), size, direction);
 }
 
 static inline void
@@ -125,4 +135,54 @@ dma_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
 
        flush_write_buffers();
 }
+
+static inline void
+dma_sync_single_range_for_device(struct device *hwdev, dma_addr_t dma_handle,
+                                unsigned long offset, size_t size,
+                                int direction)
+{
+       BUG_ON(!valid_dma_direction(direction));
+       if (dma_ops->sync_single_range_for_device)
+               dma_ops->sync_single_range_for_device(hwdev, dma_handle,
+                                                     offset, size, direction);
+
+       flush_write_buffers();
+}
+
+static inline void
+dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
+                   int nelems, int direction)
+{
+       BUG_ON(!valid_dma_direction(direction));
+       if (dma_ops->sync_sg_for_cpu)
+               dma_ops->sync_sg_for_cpu(hwdev, sg, nelems, direction);
+       flush_write_buffers();
+}
+
+static inline void
+dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
+                      int nelems, int direction)
+{
+       BUG_ON(!valid_dma_direction(direction));
+       if (dma_ops->sync_sg_for_device)
+               dma_ops->sync_sg_for_device(hwdev, sg, nelems, direction);
+
+       flush_write_buffers();
+}
+
+static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
+                                     size_t offset, size_t size,
+                                     int direction)
+{
+       BUG_ON(!valid_dma_direction(direction));
+       return dma_ops->map_single(dev, page_to_phys(page)+offset,
+                                  size, direction);
+}
+
+static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
+                                 size_t size, int direction)
+{
+       dma_unmap_single(dev, addr, size, direction);
+}
+
 #endif