#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);
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
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