T1042 dma from a pcie asic.

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T1042 dma from a pcie asic.

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dominiqueletty
Contributor I

Hello,

 

I started the debug of a new T1042 design a few weeks ago. Associated to the T1042 we have a network processor connected through a PCIe x1 link.

This asic includes a dma engine which read/write network packets (skbuff->data) to/from cpu memory.

I observe that frames lower than 260 bytes are always well received.

The frames upper than 260 bytes are always corrupted. (see rx_packet file attached).

I have previously used this asic with a MPC8544 without any problem.

I use a linux kernel 3.12.19 from freescale with the attached dts and configuration files.

 

Thanks in advance for your help.

 

Regards,

Dominique.

Original Attachment has been moved to: dts.zip

Original Attachment has been moved to: ic_t1042_ram_defconfig.zip

Original Attachment has been moved to: rx_packets.txt.zip

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