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

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

	EXPORT_SYMBOL (dma_alloc_coherent)

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

	EXPORT_SYMBOL (dma_free_coherent)

void	consistent_sync (void *vaddr, size_t size, int direction)

	EXPORT_SYMBOL (consistent_sync)

Function Documentation

void consistent_sync	(	void *	vaddr,
		size_t	size,
		int	direction
	)

Definition at line 81 of file pci-dma.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 34 of file pci-dma.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 68 of file pci-dma.c.

EXPORT_SYMBOL ( dma_alloc_coherent )

EXPORT_SYMBOL ( dma_free_coherent )

EXPORT_SYMBOL ( consistent_sync )

Functions

Function Documentation