DMA_buffer Class Reference

DMA_buffer is currently just a single page of physical memory allocated under the one megabyte mark that can be transfered via DMA. More...

#include <dma.h>

List of all members.

Public Member Functions

void alloc ()

void transfer (unsigned char channel, unsigned short int size, bool from_mem)

void free ()

void print ()

Public Attributes

void * data

Detailed Description

DMA_buffer is currently just a single page of physical memory allocated under the one megabyte mark that can be transfered via DMA.

Eventually this class should be expanded to allow multi-page transfers.

Member Function Documentation

void DMA_buffer::alloc ( )

Allocate this DMA buffer.

void DMA_buffer::free ( )

Free the memory used by this DMA buffer.

void DMA_buffer::print ( )

Print basic information about this DMA buffer.

void DMA_buffer::transfer ( unsigned char channel,

unsigned short int size,

bool from_mem

)

Perform a DMA transfer on the given channel of the given size in bytes.
Transfer from memory to device if from_mem is true. Otherwise, transfer from device to memory.

Member Data Documentation

void* DMA_buffer::data

DMA buffer: one physical page.

The documentation for this class was generated from the following files:


Public Member Functions
void	alloc ()
void	transfer (unsigned char channel, unsigned short int size, bool from_mem)
void	free ()
void	print ()
Public Attributes
void *	data