altera EP4CGX15 PCI-e 驱动源码

Altera EP4CGX15 start kit DEMO 驱动源码

#include 
#include “wdc_defs.h“
#include “wdc_lib.h“
#include “stdio.h“


#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

#define NUMBER_OF_DESCRPT 2

unsigned int OnRCSlaveRead（WDC_DEVICE_HANDLE hDev int bar unsigned int addr）{
	unsigned int u32Data=0;
	WDC_ReadAddr32（hDev bar addr &u32Data）;
	return u32Data;
}

void OnRCSlaveWrite（WDC_DEVICE_HANDLE hDev int bar unsigned int addr unsigned int wdata）{
   WDC_WriteAddr8（hDevbaraddr    wdata    & 0xFF）;
   WDC_WriteAddr8（hDevbaraddr+1  （wdata>>8）  & 0xFF）;
   WDC_WriteAddr8（hDevbaraddr+2  （wdata>>16） & 0xFF）;
   WDC_WriteAddr8（hDevbaraddr+3  （wdata>>24） & 0xFF）;
}

// PC -> FPGA
void DMA_Read（WDC_DEVICE_HANDLE hDev unsigned int target_addr int length）{
	int l;
	clock_t startend;
	double accum_time = 0;
	LARGE_INTEGER IFreq IStart IEnd;
	int test = 0;
	int iteration = 100;

	int i;

	unsigned int address_offset=0;

	int data_pattern = 1;
	int data_check_option = 1;
	



	DWORD dwStatus;
	HANDLE hWD;
	WD_DMA dma_buff;

	// getting low level driver handle
	hWD = WD_Open（）;
	if （hWD == INVALID_HANDLE_VALUE）
		printf（“DMA read : Cannot open WinDriver device“）;


	// This cardReg is required to use low level driver
	WD_CARD_REGISTER cardReg;
	BZERO（cardReg）;
	cardReg.Card.dwItems = 1;
	cardReg.Card.Item[0].item = ITEM_IO;
	cardReg.Card.Item[0].fNotSharable = TRUE;
	cardReg.Card.Item[0].I.IO.dwAddr = 0x378;
	cardReg.Card.Item[0].I.IO.dwBytes = 8;
	WD_CardRegister（hWD &cardReg）;
	if （cardReg.hCard == 0）{
		printf（“DMA read : Failed locking device“）;
		return;
	}


	// allocating the user memory area
	BZERO（dma_buff）;
	dma_buff.dwBytes = length + 32; // additional 32byte will be used to detect the end of process.
	// Set contiguous Buffer
	dma_buff.dwOptions = DMA_KERNEL_BUFFER_ALLOC | DMA_KBUF_BELOW_16M;
	dma_buff.hCard = cardReg.hCard;

	dwStatus = WD_DMALock（hWD &dma_buff）;
	if（dwStatus）{
		printf（“DMA read : Failed to allocate memory“）;
		return;
	}

	// generating random data
	DWORD random_data;
	unsigned current_time = （unsigned）time（NULL）;
	srand（current_time）;
	random_data=rand（）;

	DWORD *pSBuf; // Soft Buffer
	// This is the data send to FPGA
	pSBuf= （DWORD *） dma_buff.pUserAddr;
		for （i = 0; i < length / 4 ; i++） {
			if（data_pattern == 1）{
				random_data=rand（）;
				double tmp = （double）random_data / 17737;
				DWORD t = tmp * 0xFFFFFFFF;
				pSBuf[i] = t;
			}else
				pSBuf[i] = i;
	}


	// clearing out the location for DMA end detection
	for （i = length / 4; i < （length+32） / 4 ; i++） {
			pSBuf[i] = 0;
	}

	// Set up the variable for DMA end detection at here.
	DWORD expected_data = pSBuf[32/4 - 1];
	DWORD read_data = pSBuf[（length + 32）/4 - 1]; // Not yet transmitted so it should get 0 at here.


	// trying and check the address translation path through
	OnRCSlaveWrite（hDev 2 0x1000 0xFFFFF

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2012-04-21 08:41  altpcie_demo_10.0SP1\
     文件     3960912  2011-10-27 08:53  altpcie_demo_10.0SP1\altpcie_demo.exe
     目录           0  2010-08-17 06:46  altpcie_demo_10.0SP1\JungoDrivers\
     文件        4260  2006-11-17 02:04  altpcie_demo_10.0SP1\JungoDrivers\altpcie_perf_demo_e001.inf
     文件          89  2006-11-30 09:06  altpcie_demo_10.0SP1\JungoDrivers\install.bat
     文件      102400  2006-08-25 01:43  altpcie_demo_10.0SP1\JungoDrivers\wdapi810.dll
     文件      135253  2006-06-06 22:44  altpcie_demo_10.0SP1\JungoDrivers\wdreg.exe
     文件        2819  2006-08-15 20:33  altpcie_demo_10.0SP1\JungoDrivers\windrvr6.inf
     文件      194200  2006-08-15 20:32  altpcie_demo_10.0SP1\JungoDrivers\windrvr6.sys
     文件       32768  2006-10-18 22:28  altpcie_demo_10.0SP1\pci_lib.dll
     文件        6419  2012-04-21 09:10  altpcie_demo_10.0SP1\pcie_log.txt
     文件      102400  2006-08-25 01:43  altpcie_demo_10.0SP1\wdapi810.dll
     文件      102400  2006-10-18 22:29  altpcie_demo_10.0SP1\wdapi811.dll
     文件     7332240  2012-10-25 15:49  ug_pci_express.pdf
     目录           0  2012-10-27 03:27  alt_pcie_qsys_simple_sw\
     文件       15054  2011-04-26 17:28  alt_pcie_qsys_simple_sw\altpcie_demo.cpp
     文件        4196  2011-04-26 15:25  alt_pcie_qsys_simple_sw\alt_pcie_qsys_simple.inf
     文件        2500  2012-10-27 03:27  alt_pcie_qsys_simple_sw\alt_pcie_qsys_simple.wdp
     文件        2500  2011-04-26 15:25  alt_pcie_qsys_simple_sw\alt_pcie_qsys_simple.wdp.bak
     文件         887  2011-04-26 15:25  alt_pcie_qsys_simple_sw\alt_pcie_qsys_simple_diag.sln
     文件       14848  2011-04-26 17:55  alt_pcie_qsys_simple_sw\alt_pcie_qsys_simple_diag.suo
     文件        7297  2011-04-26 17:52  alt_pcie_qsys_simple_sw\alt_pcie_qsys_simple_diag.vcxproj
     文件         143  2011-04-26 15:25  alt_pcie_qsys_simple_sw\alt_pcie_qsys_simple_diag.vcxproj.user
     文件        1987  2011-04-26 15:25  alt_pcie_qsys_simple_sw\alt_pcie_qsys_simple_files.txt
     文件       18961  2011-04-26 15:25  alt_pcie_qsys_simple_sw\alt_pcie_qsys_simple_lib.c
     文件        3735  2011-04-26 15:25  alt_pcie_qsys_simple_sw\alt_pcie_qsys_simple_lib.h
     文件       31945  2011-04-26 17:49  alt_pcie_qsys_simple_sw\main.cpp