With this define new wrapper functions which enables to pass the new dma attribute to IOMMU ops of dma-mapping framework

diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h

index bbef15d..7fc003a 100644

--- a/arch/arm/include/asm/dma-mapping.h

+++ b/arch/arm/include/asm/dma-mapping.h

@@ -14,6 +14,12 @@

#define DMA_ERROR_CODE (~0)

extern struct dma_map_ops arm_dma_ops;

+struct page_infodma {

+ struct page **pages;

+ unsigned long nr_pages;

+ unsigned long shared;

+};

+

static inline struct dma_map_ops *get_dma_ops(struct device *dev)

{

if (dev && dev->archdata.dma_ops)

@@ -205,6 +211,14 @@ static inline void *dma_alloc_writecombine(struct device *dev, size_t size,

return dma_alloc_attrs(dev, size, dma_handle, flag, &attrs);

}

+static inline void *dma_alloc_writecombine_user(struct device *dev, size_t size,

+ dma_addr_t *dma_handle, gfp_t flag)

+{

+ DEFINE_DMA_ATTRS(attrs);

+ dma_set_attr(DMA_ATTR_USER_SPACE, &attrs);

+ return dma_alloc_attrs(dev, size, dma_handle, flag, &attrs);

+}

+

static inline void dma_free_writecombine(struct device *dev, size_t size,

void *cpu_addr, dma_addr_t dma_handle)

{

@@ -213,6 +227,14 @@ static inline void dma_free_writecombine(struct device *dev, size_t size,

return dma_free_attrs(dev, size, cpu_addr, dma_handle, &attrs);

}

+static inline void dma_free_writecombine_user(struct device *dev, size_t size,

+ void *cpu_addr, dma_addr_t dma_handle)

+{

+ DEFINE_DMA_ATTRS(attrs);

+ dma_set_attr(DMA_ATTR_USER_SPACE, &attrs);

+ return dma_free_attrs(dev, size, cpu_addr, dma_handle, &attrs);

+}

+

static inline int dma_mmap_writecombine(struct device *dev, struct vm_area_struct *vma,

void *cpu_addr, dma_addr_t dma_addr, size_t size)

{

@@ -221,6 +243,14 @@ static inline int dma_mmap_writecombine(struct device *dev, struct vm_area_struc

return dma_mmap_attrs(dev, vma, cpu_addr, dma_addr, size, &attrs);

}

+static inline int dma_mmap_writecombine_user(struct device *dev, struct vm_area_struct *vma,

+ void *cpu_addr, dma_addr_t dma_addr, size_t size)

+{

+ DEFINE_DMA_ATTRS(attrs);

+ dma_set_attr(DMA_ATTR_USER_SPACE, &attrs);

+ return dma_mmap_attrs(dev, vma, cpu_addr, dma_addr, size, &attrs);

+}

+

/*

* This can be called during boot to increase the size of the consistent

* DMA region above it's default value of 2MB. It must be called before the