From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Kleine-Budde Subject: =?UTF-8?Q?API_to_support_hardware_priorities_=28was:_Re:_API_zur_ha?= =?UTF-8?Q?rdwareunterst=c3=bctzten_Priorisierung_von_CAN-Paketen=29?= Date: Mon, 9 Nov 2015 14:32:21 +0100 Message-ID: <5640A065.2000401@pengutronix.de> References: <20151109123618.41ad1bae@mitra> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="NNdj6ABkFK9irtqn1sWSI3xWrxjjFxgX7" Return-path: Received: from metis.ext.4.pengutronix.de ([92.198.50.35]:42093 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751126AbbKINc2 (ORCPT ); Mon, 9 Nov 2015 08:32:28 -0500 In-Reply-To: <20151109123618.41ad1bae@mitra> Sender: linux-can-owner@vger.kernel.org List-ID: To: Benedikt Spranger , Oliver Hartkopp Cc: Wolfgang Grandegger , linux-can This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --NNdj6ABkFK9irtqn1sWSI3xWrxjjFxgX7 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Let's move this discussion to the mailing list. I'll translate your questions. On 11/09/2015 12:36 PM, Benedikt Spranger wrote: > C-CAN und D-CAN basierte Hardware (wie auch andere) unterst=C3=BCtzt ja= das > priorisierende Versenden von CAN-Paketen. Gibt es Bestrebungen, dieses > Feature in der API abzubilden? Several CAN IP cores support prioritisation of CAN frames. Is it planned to support this? > Im konkreten Fall werden neben Bulk-Daten azyklisch auch zeitkritische > CAN-Pakete versendet. Hierbei ist eine FIFO-Abarbeitung st=C3=B6rend. D= as > Mailbox-basierte Design von C-CAN/D-CAN unterst=C3=BCtzt ja neben der > Verwendung der Mailboxen als FIFO auch die dedizierte Konfiguration auf= > eine CAN-Id/Maske. Bene want to send bulk data and time critical cyclic data. Using a hardware FIFO introduces unwanted latencies. He further mentions that it's possible to configure the mailboxes to serve a CAN-ID/mask. Hope I've got the gist of your mail, correct me if needed. :) Marc --=20 Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de | --NNdj6ABkFK9irtqn1sWSI3xWrxjjFxgX7 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEcBAEBCgAGBQJWQKBlAAoJEP5prqPJtc/HxSIIAKGjCRB8EwgmnjHWxdPg9PdC QKEOfzpxJ7tlOThamQ4B/TPZ9C0D//kO4/kPaaEgjnyqrkmgznmZTuJE3hGR36Nn FGiIGf8jbnNqigwQHNhsBkdk75nFCZVq7/QV6VYVF3uqoYUKDJBJj0ykrleByBBO 6WKoil3NL4pI23662PC0RbS6rGku/oK6hmWCszJKX3TYYPEnD+sDp0Nb0GD+gStj JIVO3NXzWYbMhs+VKzTGyEtgfxgHICUSpgeNhz9HgIrXa5t2p1cdYvt68TG3tlu7 rEdq5KJEP9DS6HUEUe7S3ZB2EHBtZcIFW45bvZF6ZMHaMibwl2hfjpM+ZpDrXxg= =xgdO -----END PGP SIGNATURE----- --NNdj6ABkFK9irtqn1sWSI3xWrxjjFxgX7--