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Altera_Forum's avatar
Altera_Forum
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10 years ago

mSGDMA, Qsys, and Linux Integration

So I've been trying to get the Modular SG-DMA working in a Qsys project tied with Linux. I can get it to show up in the device tree, be recognized by Linux in /sys, and it looks like the memory mappi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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I do control mSGDMA with lightweight AXI

In QSys:

CSR, Descriptor, Response connected to lw_axi_master

mm_write connected to f2h_axi_slave

In Linux:

open /dev/mem

mmap to 0xFF200000 with offset of registers addresses

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Great. See, that makes sense. f2h_axi_slave, or f2h_sdram? Where are you pushing data?