Windriver的使用.docVIP

使用Windriver操作PCI的流程 一、Windriver操作流程 图1 操作流程图 二、Windriver操作hWD = WD_Open(); // 确认版本和许可文件 if (hWD==INVALID_HANDLE_VALUE) { exit_flag = 1; } else { strcpy(lic.cLicense,6C3CC2CFE89E7AD0425ECCB375D728D6B53BCB4F.AAAAA); WD_License(hWD,lic); } BZERO(pciScan); pciScan.searchId.dwVendorId = axtoi(m_VendorID); //VendorID pciScan.searchId.dwDeviceId = axtoi(m_DeviceID); //DeviceID WD_PciScanCards (hWD, pciScan);//打开设备 DWORD BARSize[2]; DWORD BARAddr[2]; BZERO(pciCardInfo); pciCardInfo.pciSlot = pciScan.cardSlot[nCardNum]; WD_PciGetCardInfo (hWD, pciCardInfo);//读取BAR0、BAR1的地址和空间大小 BARAddr[0] = pciCardInfo.Card.Item[1].I.Mem.dwPhysicalAddr; BARSize[0] = pciCardInfo.Card.Item[1].I.Mem.dwBytes; BARAddr[1] = pciCardInfo.Card.Item[2].I.Mem.dwPhysicalAddr; BARSize[1] = pciCardInfo.Card.Item[2].I.Mem.dwBytes; 4、锁定设备的读写地址空间 WD_CARD_REGISTER cardReg; BZERO(cardReg); cardReg.Card.dwItems = 1; cardReg.Card.Item[0].item = ITEM_MEMORY; cardReg.Card.Item[0].fNotSharable = TRUE; cardReg.Card.Item[0].I.Mem.dwPhysicalAddr = BARAddr[0]; cardReg.Card.Item[0].I.Mem.dwBytes = 8; WD_CardRegister(hWD, cardReg); 5、读写配置寄存器 UCHAR i=0 ; DWORD ConfigBuffer[24]; BZERO(pciCnf); pciCnf.dwBytes = 0x04; pciCnf.fIsRead = TRUE; for (i=0;i15;i++)//读取PCI寄存器所有信息 { pciCnf.dwOffset = 4*i; WD_PciConfigDump(hWD,pciCnf); ConfigBuffer[i]= dwVal; } 函数说明：（1）dwVal：从配置寄存器中读出的数据；或者是要写入配置寄存器中的数据； （2）dwReg：配置寄存器的偏移地址； （3）dwBytes：读取的字节数，大小跟配置寄存器大小一致； （4）pciCnf.fIsRead = TRUE：TURE是从配置寄存器中读取数据；FALSE是向配置寄存器中写入数据。 6、从PCI读取单个数据 WD_TRANSFER Trans; DWORD dwResult; DWORD read_data; BZERO(Trans); Trans.cmdTrans = RM_DWORD; /* Read Memory DWORD */ Trans.dwPort = cardReg.Card.Item[0].I.Mem.dwTransAddr; //从WD_CardRegister(hWD, cardReg)中读到的可执行的地址 //Trans.Data.Dword = 0 表1 寄存器地址定义和偏移量 表2 寄存器偏移地址定义 Trans.dwBytes = 8; WD_Transfer(hWD, Trans); read_data= Trans.Data.Dword ; /* Read Memory DWORD */ 7、向PCI中写入单个数据 WD_TRANSFER Trans; DWORD dwResult; //DWORD read_data; BZERO(Trans); Trans.cmdTrans = RM_DWORD; /*