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DMA 的代码
dma.c
static int malloc_buffer()
{
printk("malloc buffer\n");
if ((csi_data_buf = (U32 *) __get_free_pages(GFP_KERNEL, 8))) // 128 pages = 128x4K = 512K
{
dma_buf_phy_addr = virt_to_phys((void *
dma.c
float h[] ;
int p;
for (p=0;p
dma.c
#undef __DEBUG_VERSION
#include "def.h"
#include "2410addr.h"
#include "2410lib.h"
#include "2410slib.h"
#include "DMAAdmin.h"
#define DMA_CHECK_ATTR 1
typedef struct{ //can't use __pa
dma.c
#undef __DEBUG_VERSION
#include "def.h"
#include "2410addr.h"
#include "2410lib.h"
#include "2410slib.h"
#include "DMAAdmin.h"
#define DMA_CHECK_ATTR 1
typedef struct{ //can't use __pa
dma.c
#include "def.h"
#include "option.h"
#include "2440addr.h"
#include "2440lib.h"
#include "2440slib.h"
#include "dma.h"
#define DMA_CHECK_ATTR 1
typedef struct{ //can't use __packed???
dma.c
static int malloc_buffer()
{
printk("malloc buffer\n");
if ((csi_data_buf = (U32 *) __get_free_pages(GFP_KERNEL, 8))) // 128 pages = 128x4K = 512K
{
dma_buf_phy_addr = virt_to_phys((void *
dma.ug
Using DMA with ATA or ATAPI
a guide to all the requirements and problems
by Hale Landis
Version 14x and higher
dma.h
/*****************************************************************************
* dma.h: Header file for NXP LPC23xx/24xx Family Microprocessors
*
* Copyright(C) 2006, NXP Semiconductor
*