From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7051CC2B9F4 for ; Thu, 17 Jun 2021 10:53:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4C135613CA for ; Thu, 17 Jun 2021 10:53:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229891AbhFQKzZ (ORCPT ); Thu, 17 Jun 2021 06:55:25 -0400 Received: from ni.piap.pl ([195.187.100.5]:58618 "EHLO ni.piap.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229716AbhFQKzZ (ORCPT ); Thu, 17 Jun 2021 06:55:25 -0400 X-Greylist: delayed 470 seconds by postgrey-1.27 at vger.kernel.org; Thu, 17 Jun 2021 06:55:24 EDT Received: from t19.piap.pl (OSB1819.piap.pl [10.0.9.19]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ni.piap.pl (Postfix) with ESMTPSA id 19B44262D06; Thu, 17 Jun 2021 12:45:25 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 ni.piap.pl 19B44262D06 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=piap.pl; s=mail; t=1623926725; bh=/GAGTzsVQ3rF3Gd4CVbH6kccb4OO46+ILGDCeTVqfYw=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=fDhncHNjoaOWAxniEJMvu0J23jSNXPYu9LxgCb/NI9b4HXmcoQlboVO7v7Ab6SFap TYO1RoaQadmzg9uQjWk6qXavN3xSIfS3lwQ58WGTb9+qxF6YOwrOKt0N8eJ3gNa3Vu POMPSJAdgYS1uiQbiAvpRKUzPp9MGZmRt/qWGKig= From: =?utf-8?Q?Krzysztof_Ha=C5=82asa?= To: Linus Walleij Cc: Bjorn Helgaas , Bjorn Helgaas , linux-pci , Arnd Bergmann , Imre Kaloz , Zoltan HERPAI , Raylynn Knight , Lorenzo Pieralisi , "John W. Linville" Subject: Re: [PATCH v6] PCI: ixp4xx: Add a new driver for IXP4xx References: <20210615232425.1253281-1-linus.walleij@linaro.org> <20210616151953.GA2973960@bjorn-Precision-5520> Sender: khalasa@piap.pl Date: Thu, 17 Jun 2021 12:45:24 +0200 In-Reply-To: (Linus Walleij's message of "Thu, 17 Jun 2021 11:42:04 +0200") Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-KLMS-Rule-ID: 4 X-KLMS-Message-Action: skipped X-KLMS-AntiSpam-Status: not scanned, whitelist X-KLMS-AntiPhishing: not scanned, whitelist X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, not scanned, whitelist Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Linus Walleij writes: > I have tried to find these users but it seems they do not exist. > users need to set IXP4XX_INDIRECT_PCI to make use of it > and the only existing userspace for IXP4XX is OpenWrt and > they do not enable this. Right. OpenWrt =3D mostly routers and they're less likely to use such peripherals. > Krzysztof Halasa talks about using it for a VGA card at one > point: Right. It was some 10(+?) years ago, and it was more an experiment than a regular use. > The plan is to locate these users (if I can) and in case they > need this use an idea from Linville for indirect PCI access, > if they can provide testing (I have nothing to test on > unfortunately...) I can't find Linville's patch right now but Arnd > pointed it out to me. I guess I could theoretically test it (I mean I still have the hardware, somewhere) - but I would be extremely surprized if anyone needs it. IXP4xx can address max 256 MB of RAM. Max 667 MHz single ARMv5TE core (most CPUs in the 266 - 533 MHz range). This isn't hardware for doing graphics (and it never was). Chris. --=20 Krzysztof Ha=C5=82asa Sie=C4=87 Badawcza =C5=81ukasiewicz Przemys=C5=82owy Instytut Automatyki i Pomiar=C3=B3w PIAP Al. Jerozolimskie 202, 02-486 Warszawa