From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <517956F9.3010404@web.de> Date: Thu, 25 Apr 2013 18:16:57 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <51757858.6040604@bollue.de> <51767C09.3070502@siemens.com> <51769250.7050504@bollue.de> <5176950F.3040702@siemens.com> <5176AB28.7000305@bollue.de> <5176AC37.1040405@siemens.com> <5176C108.5050102@bollue.de> <5176C24B.3000300@siemens.com> <5176E0D2.2080101@bollue.de> <51778E9A.7090206@siemens.com> <5177D2EA.7060306@bollue.de> In-Reply-To: <5177D2EA.7060306@bollue.de> Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Subject: Re: [Xenomai] Sporadic freeze using RTnet List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Kai Bollue Cc: Xenomai On 2013-04-24 14:41, Kai Bollue wrote: > On 24.04.2013 09:49, Jan Kiszka wrote: >> Yep, that's it, thank you very much. >> >> Does the rt_8139too driver support pre-mapping? >> Nope, only the two I mentioned (simply because they are more common on >> platforms that have >4G and/or an IOMMU). But - wait - the 8139too has a >> fixed DMA window (due to some older chips) and therefore does copying >> to/from a pre-allocated bounce buffer on its own. That makes it work >> with IOMMUs as well. > = > OK, this means that cards using the RTL 8139 are currently the only > non-Intel cards that work correctly with RTnet and > 4 GB of RAM, right? > Maybe this information should be put somewhere googleable, as modern > systems tend to have much RAM - and often still PCI slots. True. There is an RTnet-related section on the Xenomai Wiki, and I'm always open for patches against the in-tree doc of RTnet. Jan -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 263 bytes Desc: OpenPGP digital signature URL: