#include <linux/types.h>
#include <linux/gfp.h>
#include <linux/string.h>
#include <linux/spinlock.h>
#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
#include <linux/export.h>

Functions
void *	dma_alloc_coherent (struct device dev, size_t size, dma_addr_t dma_handle, gfp_t gfp)

	EXPORT_SYMBOL (dma_alloc_coherent)

void	dma_free_coherent (struct device dev, size_t size, void vaddr, dma_addr_t dma_handle)

	EXPORT_SYMBOL (dma_free_coherent)

void	__dma_sync (dma_addr_t addr, size_t size, enum dma_data_direction dir)

	EXPORT_SYMBOL (__dma_sync)

int	dma_map_sg (struct device dev, struct scatterlist sg_list, int nents, enum dma_data_direction direction)

	EXPORT_SYMBOL (dma_map_sg)

void	dma_sync_sg_for_device (struct device dev, struct scatterlist sg_list, int nelems, enum dma_data_direction direction)

	EXPORT_SYMBOL (dma_sync_sg_for_device)

Function Documentation

void __dma_sync	(	dma_addr_t	addr,
		size_t	size,
		enum dma_data_direction	dir
	)

Definition at line 117 of file dma-mapping.c.

void* dma_alloc_coherent	(	struct device *	dev,
		size_t	size,
		dma_addr_t *	handle,
		gfp_t	gfp
	)

dma_alloc_coherent - allocate consistent memory for DMA : valid struct device pointer, or NULL for ISA and EISA-like devices : required memory size : bus-specific DMA address

Allocate some uncached, unbuffered memory for a device for performing DMA. This function allocates pages, and will return the CPU-viewed address, and sets to be the device-viewed address.

Definition at line 90 of file dma-mapping.c.

void dma_free_coherent	(	struct device *	dev,
		size_t	size,
		void *	cpu_addr,
		dma_addr_t	handle
	)

dma_free_coherent - free memory allocated by dma_alloc_coherent : valid struct device pointer, or NULL for ISA and EISA-like devices : size of memory originally requested in dma_alloc_coherent : CPU-view address returned from dma_alloc_coherent : device-view address returned from dma_alloc_coherent

Free (and unmap) a DMA buffer previously allocated by dma_alloc_coherent().

References to memory and mappings associated with cpu_addr/handle during and after this call executing are illegal.

Definition at line 107 of file dma-mapping.c.

int dma_map_sg	(	struct device *	dev,
		struct scatterlist *	sg_list,
		int	nents,
		enum dma_data_direction	direction
	)

Definition at line 125 of file dma-mapping.c.

void dma_sync_sg_for_device	(	struct device *	dev,
		struct scatterlist *	sg_list,
		int	nelems,
		enum dma_data_direction	direction
	)

Definition at line 140 of file dma-mapping.c.

EXPORT_SYMBOL ( dma_alloc_coherent )

EXPORT_SYMBOL ( dma_free_coherent )

EXPORT_SYMBOL ( __dma_sync )

EXPORT_SYMBOL ( dma_map_sg )

EXPORT_SYMBOL ( dma_sync_sg_for_device )

Functions

Function Documentation