Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Mapping physical menory of MSGDMA extended descriptors with prefetch enabled

Hi All , We need to use around 1500 descptors for transferring data from camera sensor to system memory ( 64 bit OS ) vi MSGDMA (64 bit). since we needed 1500 descs .. i just did kython....
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

I don't have experience with the prefetcher of the DMA but in order to use extended descriptions you have to make sure that the hardware has that option enabled.