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Altera_Forum
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17 years ago

Altera PCI Express Development Kit: Linux DMA Driver

Hi, I am a newbie to FPGA design and implementation. While installing the PCI express board on LINUX machine, I don't see Demo application driver for DMA read and write for LINUX (Manual talk...
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Altera_Forum
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16 years ago

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Hi ,

Is there a limitation in size of DMA block for altera reference design ? I am not able to DMA more than 32KB buffer when buffer (to be DMA'ed) is filled with random data.

Thanks in advance.

Regards,

Vineet

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I think so, the Compiler User Manual (9.0) says bar 1:0 32kB, 3:2 at least 256 byte andbar 5:4 32kB.

See Table 7-4. Or did you used the provided .sof file instead? In this case bar 0 should be 16 MB.