dma-mapping.c File Reference

#include <linux/dma-mapping.h>
#include <linux/export.h>
#include <linux/gfp.h>
#include <asm-generic/dma-coherent.h>

Go to the source code of this file.

Data Structures
struct	dma_devres

Functions
void *	dmam_alloc_coherent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp)
	EXPORT_SYMBOL (dmam_alloc_coherent)
void	dmam_free_coherent (struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle)
	EXPORT_SYMBOL (dmam_free_coherent)
void *	dmam_alloc_noncoherent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp)
	EXPORT_SYMBOL (dmam_alloc_noncoherent)
void	dmam_free_noncoherent (struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle)
	EXPORT_SYMBOL (dmam_free_noncoherent)
int	dma_common_mmap (struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size)
	EXPORT_SYMBOL (dma_common_mmap)

Function Documentation

int dma_common_mmap	(	struct device *	dev,
		struct vm_area_struct *	vma,
		void *	cpu_addr,
		dma_addr_t	dma_addr,
		size_t	size
	)

Definition at line 244 of file dma-mapping.c.

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

dmam_alloc_coherent - Managed dma_alloc_coherent() : Device to allocate coherent memory for : Size of allocation : Out argument for allocated DMA handle : Allocation flags

Managed dma_alloc_coherent(). Memory allocated using this function will be automatically released on driver detach.

RETURNS: Pointer to allocated memory on success, NULL on failure.

Definition at line 63 of file dma-mapping.c.

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

dmam_alloc_non_coherent - Managed dma_alloc_non_coherent() : Device to allocate non_coherent memory for : Size of allocation : Out argument for allocated DMA handle : Allocation flags

Managed dma_alloc_non_coherent(). Memory allocated using this function will be automatically released on driver detach.

RETURNS: Pointer to allocated memory on success, NULL on failure.

Definition at line 122 of file dma-mapping.c.

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

dmam_free_coherent - Managed dma_free_coherent() : Device to free coherent memory for : Size of allocation : Virtual address of the memory to free : DMA handle of the memory to free

Managed dma_free_coherent().

Definition at line 98 of file dma-mapping.c.

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

dmam_free_coherent - Managed dma_free_noncoherent() : Device to free noncoherent memory for : Size of allocation : Virtual address of the memory to free : DMA handle of the memory to free

Managed dma_free_noncoherent().

Definition at line 157 of file dma-mapping.c.

EXPORT_SYMBOL

(

dmam_alloc_coherent

)

EXPORT_SYMBOL

(

dmam_free_coherent

)

EXPORT_SYMBOL

(

dmam_alloc_noncoherent

)

EXPORT_SYMBOL

(

dmam_free_noncoherent

)

EXPORT_SYMBOL

(

dma_common_mmap

)