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=-7.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 B5EE1C48BE8 for ; Wed, 16 Jun 2021 12:49:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9EC4C61166 for ; Wed, 16 Jun 2021 12:49:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232919AbhFPMvH (ORCPT ); Wed, 16 Jun 2021 08:51:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58804 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232917AbhFPMvH (ORCPT ); Wed, 16 Jun 2021 08:51:07 -0400 Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6B78CC061574; Wed, 16 Jun 2021 05:49:00 -0700 (PDT) Received: by mail-pj1-x1035.google.com with SMTP id k22-20020a17090aef16b0290163512accedso3608177pjz.0; Wed, 16 Jun 2021 05:49:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version:content-transfer-encoding; bh=bPog0RE85xcT70HcJ3zdDfpWRbRDYp7EE1bqB/NOW4w=; b=IoLYdCWDuxVy2duzo7zynPackCGDlyDgRI4iDjO6Cemgz1TdwaE2aY+ZivXzTsseNa W+XgTj/KD1clC7NM5oxdvDUsquYCWJZfJ2Q3UIHeGj+3dmmjRKyJwm4lhROeriDAhyxs +e1beUQpsLF2hQTMfNjAhQtPewD7jHQ7GZlOPjxXTqU1C2rjyzGtey2UpYdP4liGO4/8 0RyLU5XQ/aP8X6U0up23valVFErA9JUwSfSIv+6zCgaC7CXfuUFN7O0JIpuihbeia5Bw XVzFJ4/3dcH+/Hw1f0GbcRGdXqkxv1J8A11JZOJv6OOiD84hUZCBvVxylaqNR3Mthohi Qe4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:references:date:in-reply-to :message-id:user-agent:mime-version:content-transfer-encoding; bh=bPog0RE85xcT70HcJ3zdDfpWRbRDYp7EE1bqB/NOW4w=; b=FDNygjOCb7Ecdl3os3n/7FxVzHAq1iAXN06tZbI+PL45S7jx0gvErJXw2CVClE2TG3 1aGN5LJvoWpGXuuxklB+M0uFxDKI/h1xue7V2C1ZZFK8YL4qoctoXyKamnbnmNBdiNsK O0T0+j0kja+R9wAtzvCRnOUmyMq3PI6RiKrlYBu1BMgiYyINlG/owS29wR7h1nU/pNLd GBCWsOwJTWXGqtdAErThWzwKBPQYrP2vs26Dd8/8O61YX2t3/sunvQy8WchCLWWVc8oV 9H4f+qM+TTXDtoMSNc3N78C3ZWr4ciOPj1uNAiGINh5aI71O2pESVWfQj9SfJbPw73Gp vitA== X-Gm-Message-State: AOAM533vxpUuS2zcsJfD9wwj3+zOCLsaFReBnZ9IKl65jD6Q0LgBDgNV G3aZuks1w85+HnTHoyynPnQ= X-Google-Smtp-Source: ABdhPJzdXESQ4680mekLsqXH9ZnN3Akl6foU+/ByObUepapyrbdiGCVQt1LepR/Xt7ta2JfYgK3Usw== X-Received: by 2002:a17:90a:ce18:: with SMTP id f24mr10642746pju.225.1623847739897; Wed, 16 Jun 2021 05:48:59 -0700 (PDT) Received: from localhost (122x211x248x161.ap122.ftth.ucom.ne.jp. [122.211.248.161]) by smtp.gmail.com with ESMTPSA id t1sm2143043pfe.61.2021.06.16.05.48.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Jun 2021 05:48:58 -0700 (PDT) From: Punit Agrawal To: Alexandru Elisei Cc: helgaas@kernel.org, robh+dt@kernel.org, maz@kernel.org, leobras.c@gmail.com, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, wqu@suse.com, robin.murphy@arm.com, pgwipeout@gmail.com, ardb@kernel.org, briannorris@chromium.org, shawn.lin@rock-chips.com, Bjorn Helgaas Subject: Re: [PATCH v4] PCI: of: Clear 64-bit flag for non-prefetchable memory below 4GB References: <20210614230457.752811-1-punitagrawal@gmail.com> <888ca9e9-a1c0-3992-7c01-bbb7400e8dc0@arm.com> Date: Wed, 16 Jun 2021 21:48:56 +0900 In-Reply-To: <888ca9e9-a1c0-3992-7c01-bbb7400e8dc0@arm.com> (Alexandru Elisei's message of "Tue, 15 Jun 2021 09:46:12 +0100") Message-ID: <87eed2t1on.fsf@stealth> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Hi Alex, Alexandru Elisei writes: > Hi Punit, > > Thank you for working on this! > > On 6/15/21 12:04 AM, Punit Agrawal wrote: >> Alexandru and Qu reported this resource allocation failure on >> ROCKPro64 v2 and ROCK Pi 4B, both based on the RK3399: >> >> pci_bus 0000:00: root bus resource [mem 0xfa000000-0xfbdfffff 64bit] >> pci 0000:00:00.0: PCI bridge to [bus 01] >> pci 0000:00:00.0: BAR 14: no space for [mem size 0x00100000] >> pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x00003fff 64bit] >> >> "BAR 14" is the PCI bridge's 32-bit non-prefetchable window, and our >> PCI allocation code isn't smart enough to allocate it in a host >> bridge window marked as 64-bit, even though this should work fine. >> >> A DT host bridge description includes the windows from the CPU >> address space to the PCI bus space. On a few architectures >> (microblaze, powerpc, sparc), the DT may also describe PCI devices >> themselves, including their BARs. >> >> Before 9d57e61bf723 ("of/pci: Add IORESOURCE_MEM_64 to resource >> flags for 64-bit memory addresses"), of_bus_pci_get_flags() ignored >> the fact that some DT addresses described 64-bit windows and BARs. >> That was a problem because the virtio virtual NIC has a 32-bit BAR >> and a 64-bit BAR, and the driver couldn't distinguish them. >> >> 9d57e61bf723 set IORESOURCE_MEM_64 for those 64-bit DT ranges, which >> fixed the virtio driver. But it also set IORESOURCE_MEM_64 for host >> bridge windows, which exposed the fact that the PCI allocator isn't >> smart enough to put 32-bit resources in those 64-bit windows. >> >> Clear IORESOURCE_MEM_64 from host bridge windows since we don't need >> that information. > > I've tested the patch on my rockpro64. Kernel built from tag v5.13-rc6: > > [=C2=A0=C2=A0=C2=A0 0.345676] pci 0000:01:00.0: 8.000 Gb/s available PCIe= bandwidth, limited by > 2.5 GT/s PCIe x4 link at 0000:00:00.0 (capable of 31.504 Gb/s with 8.0 GT= /s PCIe > x4 link) > [=C2=A0=C2=A0=C2=A0 0.359300] pci_bus 0000:01: busn_res: [bus 01-1f] end = is updated to 01 > [=C2=A0=C2=A0=C2=A0 0.359343] pci 0000:00:00.0: BAR 14: no space for [mem= size 0x00100000] > [=C2=A0=C2=A0=C2=A0 0.359365] pci 0000:00:00.0: BAR 14: failed to assign = [mem size 0x00100000] > [=C2=A0=C2=A0=C2=A0 0.359387] pci 0000:01:00.0: BAR 0: no space for [mem = size 0x00004000 64bit] > [=C2=A0=C2=A0=C2=A0 0.359407] pci 0000:01:00.0: BAR 0: failed to assign [= mem size 0x00004000 64bit] > [=C2=A0=C2=A0=C2=A0 0.359428] pci 0000:00:00.0: PCI bridge to [bus 01] > [=C2=A0=C2=A0=C2=A0 0.359862] pcieport 0000:00:00.0: PME: Signaling with = IRQ 76 > [=C2=A0=C2=A0=C2=A0 0.360190] pcieport 0000:00:00.0: AER: enabled with IR= Q 76 > > Kernel built from tag v5.13-rc6 with this patch applied: > > [=C2=A0=C2=A0=C2=A0 0.345434] pci 0000:01:00.0: 8.000 Gb/s available PCIe= bandwidth, limited by > 2.5 GT/s PCIe x4 link at 0000:00:00.0 (capable of 31.504 Gb/s with 8.0 GT= /s PCIe > x4 link) > [=C2=A0=C2=A0=C2=A0 0.359081] pci_bus 0000:01: busn_res: [bus 01-1f] end = is updated to 01 > [=C2=A0=C2=A0=C2=A0 0.359128] pci 0000:00:00.0: BAR 14: assigned [mem 0xf= a000000-0xfa0fffff] > [=C2=A0=C2=A0=C2=A0 0.359155] pci 0000:01:00.0: BAR 0: assigned [mem 0xfa= 000000-0xfa003fff 64bit] > [=C2=A0=C2=A0=C2=A0 0.359217] pci 0000:00:00.0: PCI bridge to [bus 01] > [=C2=A0=C2=A0=C2=A0 0.359239] pci 0000:00:00.0:=C2=A0=C2=A0 bridge window= [mem 0xfa000000-0xfa0fffff] > [=C2=A0=C2=A0=C2=A0 0.359422] pcieport 0000:00:00.0: enabling device (000= 0 -> 0002) > [=C2=A0=C2=A0=C2=A0 0.359687] pcieport 0000:00:00.0: PME: Signaling with = IRQ 76 > [=C2=A0=C2=A0=C2=A0 0.360001] pcieport 0000:00:00.0: AER: enabled with IR= Q 76 > > And the NVME on the PCIE expansion card works as expected: > > Tested-by: Alexandru Elisei Thanks a lot for the retest and the detailed logs. Punit [...] 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=-5.7 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 617A5C48BE6 for ; Wed, 16 Jun 2021 12:49:12 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0CFAE610A3 for ; Wed, 16 Jun 2021 12:49:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0CFAE610A3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:In-Reply-To: Date:References:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=v9p1r60g2EnEBCJbS2/KKoFb6N2gYTxRHgOcxRcZ++8=; b=NP+gALmaWBQvh6 bsfkXl8PI6GYvt4HIs+cFtYZsCX7ClPqjg1OlXejiGn4D8xX4D0MXJh3Q9sqSnk/DAIs3dKEDEXdw BpIeKbvJpsYI12zaI33uyVbCwNNa+elbFT9WCP6zW0SbPLD8GNqq0JkiUxm0CR8Wk5vx0C9hD/3nK mglM7viXvrvrWxw7EKsAmKdmCJocD23cJQcuMqSijbh/gTDx+geC/r7+Scv6S/6oJF2Ddf1yDcKuN LNcdC4XSdsbL3Qop+ykMdqRejssQUMrVIQNpFZDkEiktgDIcEX0A/Ha9qIzwatogyAMAF5nqyGm9G UrJ9duQFu3pLOMBiDqjA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ltUyf-006Ix3-AT; Wed, 16 Jun 2021 12:49:05 +0000 Received: from mail-pl1-x629.google.com ([2607:f8b0:4864:20::629]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ltUyb-006Iw8-Hv; Wed, 16 Jun 2021 12:49:04 +0000 Received: by mail-pl1-x629.google.com with SMTP id 69so1062211plc.5; Wed, 16 Jun 2021 05:49:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version:content-transfer-encoding; bh=bPog0RE85xcT70HcJ3zdDfpWRbRDYp7EE1bqB/NOW4w=; b=IoLYdCWDuxVy2duzo7zynPackCGDlyDgRI4iDjO6Cemgz1TdwaE2aY+ZivXzTsseNa W+XgTj/KD1clC7NM5oxdvDUsquYCWJZfJ2Q3UIHeGj+3dmmjRKyJwm4lhROeriDAhyxs +e1beUQpsLF2hQTMfNjAhQtPewD7jHQ7GZlOPjxXTqU1C2rjyzGtey2UpYdP4liGO4/8 0RyLU5XQ/aP8X6U0up23valVFErA9JUwSfSIv+6zCgaC7CXfuUFN7O0JIpuihbeia5Bw XVzFJ4/3dcH+/Hw1f0GbcRGdXqkxv1J8A11JZOJv6OOiD84hUZCBvVxylaqNR3Mthohi Qe4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:references:date:in-reply-to :message-id:user-agent:mime-version:content-transfer-encoding; bh=bPog0RE85xcT70HcJ3zdDfpWRbRDYp7EE1bqB/NOW4w=; b=Y5XXQb9HtbVNJAN58f0xY+ectZRS+9KgSq6O9ZnvJe8Upar/mEJh9CmyLuvy4wljhB 1nzkFYsMsD1f33uLMRA0JMlaJfzvVR0Y2jPmN/slp9Upx2ePefC0m+gfYhJmse5aBpVw areGh12wo2zMa/cEAF/Q1m9JinRtUopq0cC/ILyTsBrebNcALxUMle+lRzWd1Y2Eme10 FxVQhW5Fi+Bypk9xw6LpfC2pXwWsn/3+VAjlOcrNIg4hbJ/BCHUrsW/rcJvELm21lQT6 dggttcKZOlqOu1zOR0MfyX8aghuIwXkPY4XYh+IOwTxQKo84IS40Ne1kw+E1mrsV7wPn poXg== X-Gm-Message-State: AOAM5335OTZjrdL/qAeNEdKwLKTV1R18nguphRoGXudT5oDu7GGc1Vsc IcixQkL+oSZsWX7chy4lixA= X-Google-Smtp-Source: ABdhPJzdXESQ4680mekLsqXH9ZnN3Akl6foU+/ByObUepapyrbdiGCVQt1LepR/Xt7ta2JfYgK3Usw== X-Received: by 2002:a17:90a:ce18:: with SMTP id f24mr10642746pju.225.1623847739897; Wed, 16 Jun 2021 05:48:59 -0700 (PDT) Received: from localhost (122x211x248x161.ap122.ftth.ucom.ne.jp. [122.211.248.161]) by smtp.gmail.com with ESMTPSA id t1sm2143043pfe.61.2021.06.16.05.48.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Jun 2021 05:48:58 -0700 (PDT) From: Punit Agrawal To: Alexandru Elisei Cc: helgaas@kernel.org, robh+dt@kernel.org, maz@kernel.org, leobras.c@gmail.com, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, wqu@suse.com, robin.murphy@arm.com, pgwipeout@gmail.com, ardb@kernel.org, briannorris@chromium.org, shawn.lin@rock-chips.com, Bjorn Helgaas Subject: Re: [PATCH v4] PCI: of: Clear 64-bit flag for non-prefetchable memory below 4GB References: <20210614230457.752811-1-punitagrawal@gmail.com> <888ca9e9-a1c0-3992-7c01-bbb7400e8dc0@arm.com> Date: Wed, 16 Jun 2021 21:48:56 +0900 In-Reply-To: <888ca9e9-a1c0-3992-7c01-bbb7400e8dc0@arm.com> (Alexandru Elisei's message of "Tue, 15 Jun 2021 09:46:12 +0100") Message-ID: <87eed2t1on.fsf@stealth> User-Agent: 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[122.211.248.161]) by smtp.gmail.com with ESMTPSA id t1sm2143043pfe.61.2021.06.16.05.48.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Jun 2021 05:48:58 -0700 (PDT) From: Punit Agrawal To: Alexandru Elisei Cc: helgaas@kernel.org, robh+dt@kernel.org, maz@kernel.org, leobras.c@gmail.com, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, wqu@suse.com, robin.murphy@arm.com, pgwipeout@gmail.com, ardb@kernel.org, briannorris@chromium.org, shawn.lin@rock-chips.com, Bjorn Helgaas Subject: Re: [PATCH v4] PCI: of: Clear 64-bit flag for non-prefetchable memory below 4GB References: <20210614230457.752811-1-punitagrawal@gmail.com> <888ca9e9-a1c0-3992-7c01-bbb7400e8dc0@arm.com> Date: Wed, 16 Jun 2021 21:48:56 +0900 In-Reply-To: <888ca9e9-a1c0-3992-7c01-bbb7400e8dc0@arm.com> (Alexandru Elisei's message of "Tue, 15 Jun 2021 09:46:12 +0100") Message-ID: <87eed2t1on.fsf@stealth> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210616_054901_660748_B17B1DB6 X-CRM114-Status: GOOD ( 20.00 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGkgQWxleCwKCkFsZXhhbmRydSBFbGlzZWkgPGFsZXhhbmRydS5lbGlzZWlAYXJtLmNvbT4gd3Jp dGVzOgoKPiBIaSBQdW5pdCwKPgo+IFRoYW5rIHlvdSBmb3Igd29ya2luZyBvbiB0aGlzIQo+Cj4g T24gNi8xNS8yMSAxMjowNCBBTSwgUHVuaXQgQWdyYXdhbCB3cm90ZToKPj4gQWxleGFuZHJ1IGFu ZCBRdSByZXBvcnRlZCB0aGlzIHJlc291cmNlIGFsbG9jYXRpb24gZmFpbHVyZSBvbgo+PiBST0NL UHJvNjQgdjIgYW5kIFJPQ0sgUGkgNEIsIGJvdGggYmFzZWQgb24gdGhlIFJLMzM5OToKPj4KPj4g 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