dma-mapping.h File Reference

#include <linux/mm.h>
#include <linux/scatterlist.h>
#include <asm/cache.h>
#include <asm/io.h>

Go to the source code of this file.

Macros
#define	dma_alloc_noncoherent(d, s, h, f)   dma_alloc_coherent((d), (s), (h), (f))
#define	dma_free_noncoherent(d, s, v, h)   dma_free_coherent((d), (s), (v), (h))

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

Macro Definition Documentation

#define dma_alloc_noncoherent	(		d,
			s,
			h,
			f
	)		dma_alloc_coherent((d), (s), (h), (f))

Definition at line 31 of file dma-mapping.h.

#define dma_free_noncoherent	(		d,
			s,
			v,
			h
	)		dma_free_coherent((d), (s), (v), (h))

Definition at line 32 of file dma-mapping.h.

Function Documentation

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

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

void dma_free_coherent	(	struct device *	dev,
		size_t	size,
		void *	vaddr,
		dma_addr_t	dma_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 110 of file dma-coherent.c.