dma_common_get_sgtable

Name:Create scatter-list for the already allocated DMA buffer.

Proto:int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, void *cpu_addr, dma_addr_t dma_addr, size_t size, unsigned long attrs)

Type:int

Parameter:

Type	Parameter	Name
struct device *	dev
struct sg_table *	sgt
void *	cpu_addr
dma_addr_t	dma_addr
size_t	size
unsigned long	attrs

115

page = virt_to_page(kaddr) returns a valid pointer if and only if* virt_addr_valid(kaddr) returns true.(cpu_addr)

118

ret = sg_alloc_table - Allocate and initialize an sg table*@table: The sg table header to use*@nents: Number of entries in sg list*@gfp_mask: GFP allocation mask* Description:* Allocate and initialize an sg table. If @nents@ is larger than

119

If Not ret Then sg_set_page - Set sg entry to point at given page*@sg: SG entry*@page: The page*@len: Length of data*@offset: Offset into page* Description:* Use this function to set an sg entry pointing at a page, never assign* the page directly

121

Return ret

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