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Altera_Forum's avatar
Altera_Forum
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16 years ago

How to finish the altpciechdma.c driver?

I've downloaded the altpciechdma.c driver for the Altera Arria GX dev kit. The char part of it is not yet finished (due to the comments). And a module is missign "mapper_user_to_sg.h". Smb has...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Hi,

most of you might have already found a solution for your problems. I just would like to point out a few things regarding altpciechdma driver.

I have managed to make it run on a Ubuntu 10.04 64 bits. Some of you have an error where the dma loopback test do not match the transfer (as if no buffer overwrite is performed). if your system has a 64 bit manageable DMA, the driver might recognise the PCI implementation as capable, but the hardware has to know it too. There is a generic parameter on the chain-dma design where compatibility for 64 RC DMA modules must be configured.

On the other hand, I am now trying to use the driver to build the character/block device required to keep working. If anyone has some experience on this, it would be nice to have some suggestions on how I should proceed.

Thanks to everyone