dma-alloc.c File Reference

#include <linux/types.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/gfp.h>
#include <linux/export.h>
#include <asm/io.h>

Go to the source code of this file.

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

Function Documentation

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

Definition at line 23 of file dma-alloc.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 66 of file dma-alloc.c.

EXPORT_SYMBOL

(

dma_alloc_coherent

)

EXPORT_SYMBOL

(

dma_free_coherent

)