There is no hardware bug. The PCIe spec allows VDMs. Note Section 2.2.8.6 where there appear to be a couple of options.
- (Receivers) Completers silently discard Vendor_Defined Type 1 Messages which they are not designed to receive – this is not an error condition. - (Receivers) Completers handle the receipt of an unsupported Vendor_Defined Type 0 Message as an Unsupported Request, and the error is reported according to Section 6.2. I think you may have MCTP enabled and you should be able to disable it in the EEPROM. I will need a lot more information about your system and whether the i210 is a LOM (LAD-on-motherboard, soldered onto your motherboard) or a NIC (what we call a plug-in PCIe card). Either way, you probably won't be able to get it changed without a working OS. If it's a NIC, you can take it out and put it in a non-ARM Linux system and send me a dump of your current EEPROM. Todd Fujinaka Software Application Engineer Networking Division (ND) Intel Corporation todd.fujin...@intel.com (503) 712-4565 -----Original Message----- From: shiv prakash Agarwal [mailto:chhotu.s...@gmail.com] Sent: Sunday, June 01, 2014 9:54 PM To: Arnd Bergmann Cc: linux-arm-ker...@lists.infradead.org; Duyck, Alexander H; Thomas Petazzoni; e1000-devel@lists.sourceforge.net; Jason Gunthorpe; Fujinaka, Todd; Lucas Stach Subject: Re: [E1000-devel] ARM support for igb driver Yes its hardware bug. I need to know whether we can disable it from device side? If yes, how? On Sun, Jun 1, 2014 at 5:16 PM, Arnd Bergmann <a...@arndb.de> wrote: > On Sunday 01 June 2014 11:26:57 shiv prakash Agarwal wrote: >> I don't see all devices send VDMs, then why Intel I-210? > > There is no obligation to do it of course. > >> Also, Is it a bug in host bridge hardware or driver? If hardware, how >> can we make device not to send it? > > If the hardware cannot handle them, it's a hardware bug. If the > hardware does handle them correctly but the software doesn't, that is > a bug in the bridge driver. > > We have a couple of host bridge drivers that register a trap handler > and then look at the bridge registers to determine the exact cause. > > Which host bridge driver do you use? > > Arnd ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
