XDMA的驱动是官方提供的,这里不做详细解读,总之XDMA驱动就是把PCIE DMA包成了多种字符设备:xdma_h2c,xdma_c2h,xdma_user,xdma_control,xdma_bypass,xdma_events 经过本人测试使用,我只推荐使用xdma_h2c,xdma_c2h,xdma_bypass,xdma_events这四个字符设备。xdma_h2c用来把数据从内存写到FPGA的DDR,xdma_c2h用来把...
XDMA的驱动是官方提供的,这里不做详细解读,总之XDMA驱动就是把PCIE DMA包成了多种字符设备:xdma_h2c,xdma_c2h,xdma_user,xdma_control,xdma_bypass,xdma_events 经过本人测试使用,我只推荐使用xdma_h2c,xdma_c2h,xdma_bypass,xdma_events这四个字符设备。xdma_h2c用来把数据从内存写到FPGA的DDR,xdma_c2h用来把...
在终端中输入“ls /dev”命令并执行,可以在/dev 目录下看到以 xdma0 开头的设备文件,如下图所示: 以下是每个设备文件的简要说明: /dev/xdma0_control:用于控制和配置DMA设备。 /dev/xdma0_user:用于用户自定义用途。 /dev/xdma0_xvc:用于虚拟JTAG功能。 /dev/xdma0_events_*:用于处理DMA事件(中断)。 /de...
但是还有很多问题没有解决,为什么安装驱动后就可以转化为文件操纵,open,read这些函数哪来的;读写操作是同步还是异步的;除读写外还能进行哪些操作;如何处理中断(/dev/xdma0_events_0)等等。 int fgpa_fd=open(devname,O_RDWR);int return_value=read(fpga_fd,buf,bytes);int return_value=write(fpga_fd,buf,...
CC [M] /usr/XDMA/linux-kernel/xdma/cdev_events.o CC [M] /usr/XDMA/linux-kernel/xdma/cdev_sgdma.o CC [M] /usr/XDMA/linux-kernel/xdma/cdev_xvc.o CC [M] /usr/XDMA/linux-kernel/xdma/cdev_bypass.o CC [M] /usr/XDMA/linux-kernel/xdma/xdma_mod.o ...
cat/dev/xdma0_event_0 复制代码 就会报错，报cat:/dev/xdma0_events_0: Protocol error 复制代码 ...
Other Parts Discussed in Thread: TPS65217 Hi, I'm using BBB connected to a FPGA with GPMC interface. And using two xdma events for send and receive data between
unsigned interrnum =0 ;int c2h_fd ;int h2c_fd ;int control_fd;int interrupt_fd;void*control_base;static sem_t int_sem_rx;static sem_t int_sem_tx;char*device_c2h = DEVICE_NAME_C2H;char*device_h2c = DEVICE_NAME_H2C;char*device_reg = DEVICE_NAME_REG;staticvoidwrite_control(void*...
XDMA_EVENT_INT2: GPIO0_29, GPIO0_6, GPIO0_7 is this correct?? and where is XDMA_EVENT_INT1?? 2.What makes these EVENTs happen?? I thought same as external GPIO Interrupt. but I don't know now.. and How to configure 3. I found Control Module for PIN MUX in AM335x Tech ref...
Handling Exception Events Bridge Slave Bridge BDF Table Address Translation Slave Address Translation Examples Master Bridge Interrupts Asynchronous and Queue Based Interrupts Interrupt Engine Direct Interrupt Interrupt Aggregation Ring Interrupt Context Structure Interrupt Aggregation Entry Inte...