Intel Elkhart Lake X6000E - Ethernet documentation question

[etag4048]

Hello, 

We've been contracted to port an old RTOS to a system running on the Intel Elkhart Lake X6000E

after solving UEFI related issues, I am now working on networking support. I've decided to  import a driver from OpenBSD, the synopsis GMAC driver which is easier to port than the Linux stmmac driver.

I've downloaded the following documentation: vol1: 636112, vol2: 636722,635255,636723

636722 - chapter 10 contains a list of registers, that I am able to read/write to. So far it has been helpful to setup the device. However when I  read DMA_DEBUG_STATUS0 it says Rx Descriptor error...

vol1 - chapter 15, describes features, interrupts.

However, I can not seem to find any information on the Rx/Tx descriptors, and their RDES/TDES fields.

I can go by the source code and documentation from other vendors I found on google, but this is work and not a reverse engineering challenge

Any help will be greatly appreciated.

- Erik 

[Jaime_Lizarme]

Hi  @etag4048,

Thank you for contacting the Intel Embedded Community.

Please refer to RDC #619777 Gigabit Ethernet Controller with Time-Sensitive Networking
Programmers Reference Manual (PRM) Guide

Best regards,

Jaime L.

[etag4048]

Thank you for the response,

It looks like #619777 is not accessible publicly, It doesn't come up the search. What has to be done to get access to this manual ? 

BR

- Erik

[Jaime_Lizarme]

Hi @etag4048 

Sure, to access RDC documents, please go through the following instructions described on the below article.

https://www.intel.com/content/www/us/en/support/articles/000058073/programs/resource-and-documentation-center.html

Best regards,

Jaime L.

[etag4048]

Hello @Jaime_Lizarme,

Got it!  I've submitted the form for the Developer Zone Premier (DZP) access.

Thanks for pointing me in the right direction.

BR

- Erik