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Altera_Forum's avatar
Altera_Forum
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11 years ago

PCIe MSI Interrupt

HI, I have Cyclone V/GT with Gen2 4 lane DMA example design. The FPGA card is plugged into PC running Windows 7. I wrote a windows driver. It seems that the MSI interrupt is not received. After t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

did anyone have ever use the fpga to send the msi interrupt,why i read the Message Upper Address，Message Lower Address,Message Data register at first,they are all 0,and then i configure these register in the isr enable callback function,i configure Upper Address register to be FEE00008，Message Data egister to be00000001.and i ask if the MessageID is 1 in the isr callback function,but it seems that the MSI interrupt is not received.why?