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