Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

[linux-2.6-omap-h63xx.git] / include / asm-x86 / dma-mapping.h

diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 53a404b0f9ee806345cb1dbbe15270026cdec69c..a1a4dc7fe6ece75087cc33e33d3c60e2477cd586 100644 (file)
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -10,16 +10,23 @@
 #include <asm/io.h>
 #include <asm/swiotlb.h>
 
+extern dma_addr_t bad_dma_address;
+extern int iommu_merge;
+extern struct device fallback_dev;
+extern int panic_on_overflow;
+extern int forbid_dac;
+extern int force_iommu;
+
 struct dma_mapping_ops {
        int             (*mapping_error)(dma_addr_t dma_addr);
        void*           (*alloc_coherent)(struct device *dev, size_t size,
                                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);
@@ -52,18 +59,33 @@ struct dma_mapping_ops {
 
 extern const struct dma_mapping_ops *dma_ops;
 
-#ifdef CONFIG_X86_32
-# include "dma-mapping_32.h"
-#else
-# include "dma-mapping_64.h"
-#endif
+static inline int dma_mapping_error(dma_addr_t dma_addr)
+{
+       if (dma_ops->mapping_error)
+               return dma_ops->mapping_error(dma_addr);
+
+       return (dma_addr == bad_dma_address);
+}
+
+#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);
+
+
+extern int dma_supported(struct device *hwdev, u64 mask);
+extern int dma_set_mask(struct device *dev, u64 mask);
 
 static inline dma_addr_t
 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
@@ -159,4 +181,57 @@ dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
 
        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);
+}
+
+static inline void
+dma_cache_sync(struct device *dev, void *vaddr, size_t size,
+       enum dma_data_direction dir)
+{
+       flush_write_buffers();
+}
+
+static inline int dma_get_cache_alignment(void)
+{
+       /* no easy way to get cache size on all x86, so return the
+        * maximum possible, to be safe */
+       return boot_cpu_data.x86_clflush_size;
+}
+
+#define dma_is_consistent(d, h)        (1)
+
+#ifdef CONFIG_X86_32
+#  define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
+struct dma_coherent_mem {
+       void            *virt_base;
+       u32             device_base;
+       int             size;
+       int             flags;
+       unsigned long   *bitmap;
+};
+
+extern int
+dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
+                           dma_addr_t device_addr, size_t size, int flags);
+
+extern void
+dma_release_declared_memory(struct device *dev);
+
+extern void *
+dma_mark_declared_memory_occupied(struct device *dev,
+                                 dma_addr_t device_addr, size_t size);
+#endif /* CONFIG_X86_32 */
 #endif