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Altera_Forum's avatar
Altera_Forum
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13 years ago

use descriptor chain in SGDMA

Hi all My current goal is to use SGDMA (ST-to-MM) to transfer video data to a memory. Later on, I'll replace the memory by PCIE IP. My problem is how to use descriptor chain in SGDMA. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Last time I looked I didn't see an instruction to invalidate a cache line without writing it out - rather an ommision.

I also remember someone porting NetBSD saying that there was a missing cache op - but that might have been a different one!