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Visitor mk676910825
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关于ip AXI Memory Mapped to PCI Express (PCIe) Gen2 v2.8中断向量号的问题

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我正在使用这个ip核与主机端通讯,给主机发送的中断,主机能收到,但是主机读我发的中断向量号一直不对,我是在发送中断的(intx_msi_request=1)时刻同时修改(msi_vector_num)的值  ,一直保持到intx_msi_grant置1,向量值范围0-3都试过,msi_enable=1,请问我这么操作有什么问题吗?还是有别的什么参数要配置???

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Xilinx Employee
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回复: 关于ip AXI Memory Mapped to PCI Express (PCIe) Gen2 v2.8中断向量号的问题

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hi @mk676910825

 

主机读取的中断向量号是多少?

 

IP配置界面PCIe:MISC这一页的MSI Vectors Requested选的是多少?

 

谢谢

Boris

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Xilinx Employee
Xilinx Employee

回复: 关于ip AXI Memory Mapped to PCI Express (PCIe) Gen2 v2.8中断向量号的问题

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hi @mk676910825

 

主机读取的中断向量号是多少?

 

IP配置界面PCIe:MISC这一页的MSI Vectors Requested选的是多少?

 

谢谢

Boris

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Visitor mk676910825
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回复: 关于ip AXI Memory Mapped to PCI Express (PCIe) Gen2 v2.8中断向量号的问题

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后来发现MSI Vectors Requested选的不对,之前选择的是5,估计是主机分配不了这么大,后来选择3,主机读取中断向量号正常了

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