PCI in uClinux

Hi,

i have now tested a little bit.

To Hippo: DMA works. The PCI accesses the SDRAM via Master-Access.

The maximum speed i reached with a Nios/f @100MHz, and CAS2/SDRAM@100MHz is:

47Mbit/s for TCP and 49Mbit/s for UDP.

I think the Nios is not able to give more....

These are values under uClinux. Therefore the are not too bad, i think.

But the best thing is, that PCI works. So really everything can be combined with uClinux (Wlan, MiniPCI, SCSI and so on...)

To Bigboss25:

I will write a NiosWiki Article soon about that.

Solong

Marco

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originally posted by bigboss25+sep 29 2006, 02:15 am--><div class='quotetop'>quote (bigboss25 @ sep 29 2006, 02:15 am)</div>

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<!--quotebegin-mabcom@Sep 29 2006, 01:45 AM

hi hippo,

how fast is the pci implementation?

does it works with dma? i think it&#39;s a little bit slowly when i test the pci performance with giga-ethernet.

i think the linux tcp-ip-stack doesn&#39;t use the pci-memory access.

can we solve it quickly?

thanx

marco

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Hi MadCom,

would it be possible for you to create on "how-to" on Nios Wiki, explaining what you did (hardware, Ip cores used... and of course uClinux driver).

I think it would help a lot of people.

Thanx.

Regards.

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