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=-3.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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 48CCFC4363A for ; Thu, 29 Oct 2020 01:03:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E772720791 for ; Thu, 29 Oct 2020 01:03:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="i/1fNDcO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730494AbgJ1WKT (ORCPT ); Wed, 28 Oct 2020 18:10:19 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:49466 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730483AbgJ1WKS (ORCPT ); Wed, 28 Oct 2020 18:10:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603923017; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=e8xnFOFFJaHLUOxxzEQxUXczDp2GypBZ0BZHMFTtshA=; b=i/1fNDcO8+ewywBxofrJ3uiGa5p923W/iHwe+q8u0SRAx5bxnRB1pQO7wMYgMK+IBvbjbB yVRESqwpM3Gsi7TcaU/VpKqB6bQGASvsWtEN5JWGtICcff7r0SyIO6UXLpygWA8goI3jvh R0tnFMgld2owk4Pfx6QHGpCaMjJuQqc= Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-387-vYH8u1E_NFesVvpwVomZiA-1; Wed, 28 Oct 2020 11:08:40 -0400 X-MC-Unique: vYH8u1E_NFesVvpwVomZiA-1 Received: by mail-il1-f197.google.com with SMTP id b6so3732288ilm.6 for ; Wed, 28 Oct 2020 08:08:40 -0700 (PDT) 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:in-reply-to:references:date :message-id:mime-version:content-transfer-encoding; bh=e8xnFOFFJaHLUOxxzEQxUXczDp2GypBZ0BZHMFTtshA=; b=axuYTWbZan99wve6xJHJhTkMdyLWjXfZjNFwWMjPGAaBYMA956J5YKRy21eqfzjPZi Ref5iCx5Z2CxmXtvy0bq+7k7VcAYHSFlXcNPP2P+BzRlcCts0mTEVpu+ZySabEOEjkvK cpz7DrIWldIpwvW042ERaJxWEMgUrxO93OqaC5jjJLckbZCWgaDeKTAjIdJl6k/NKqXc XGymxCSbZp9p7HYGcuaDnJRTqIdLX1E9r+7qMkFIr30CnapyXFUfcNpGMXgZTeBR586p 0IMGlsAhuRVEHH+FWuIFkj2tc/qseWq9sFHKQhJ/RFYbgfZGleDoXz/Nbz27bRRyrO1g iGDA== X-Gm-Message-State: AOAM530s5NgKk+EdEbtteKPl6lQ9F5UTsZM0fz+c5bPGS+7adiIGimey lGfHwL8t03X4IQGzJy+rki5ncvftxQmAgLQtLZHqmT/9/l1pL2eZAKnQDSbOhfbOtd3rIFP6bdr 4gjP9JgHg7+cuwrMlFh/J X-Received: by 2002:a92:d3ce:: with SMTP id c14mr5787343ilh.157.1603897718796; Wed, 28 Oct 2020 08:08:38 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwXIihC/u1Na4cd/nHaASyURWk00ICQX3yJr1URYfAKlTho/LF8HkvGID2SJkby1NRzicM7FA== X-Received: by 2002:a92:d3ce:: with SMTP id c14mr5787312ilh.157.1603897718181; Wed, 28 Oct 2020 08:08:38 -0700 (PDT) Received: from alrua-x1.borgediget.toke.dk ([2a0c:4d80:42:443::2]) by smtp.gmail.com with ESMTPSA id l78sm2985291ild.30.2020.10.28.08.08.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Oct 2020 08:08:37 -0700 (PDT) Received: by alrua-x1.borgediget.toke.dk (Postfix, from userid 1000) id A23CC181CED; Wed, 28 Oct 2020 16:08:35 +0100 (CET) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= To: Bjorn Helgaas Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Rob Herring , Ilias Apalodimas , vtolkm@googlemail.com Subject: Re: PCI trouble on mvebu (Turris Omnia) In-Reply-To: <20201028144209.GA315566@bjorn-Precision-5520> References: <20201028144209.GA315566@bjorn-Precision-5520> X-Clacks-Overhead: GNU Terry Pratchett Date: Wed, 28 Oct 2020 16:08:35 +0100 Message-ID: <87pn52mlqk.fsf@toke.dk> 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 Bjorn Helgaas writes: > On Wed, Oct 28, 2020 at 02:36:13PM +0100, Toke H=C3=B8iland-J=C3=B8rgense= n wrote: >> Toke H=C3=B8iland-J=C3=B8rgensen writes: >>=20 >> > Bjorn Helgaas writes: >> > >> >> [+cc vtolkm] >> >> >> >> On Tue, Oct 27, 2020 at 04:43:20PM +0100, Toke H=C3=B8iland-J=C3=B8rg= ensen wrote: >> >>> Hi everyone >> >>>=20 >> >>> I'm trying to get a mainline kernel to run on my Turris Omnia, and am >> >>> having some trouble getting the PCI bus to work correctly. Specifica= lly, >> >>> I'm running a 5.10-rc1 kernel (torvalds/master as of this moment), w= ith >> >>> the resource request fix[0] applied on top. >> >>>=20 >> >>> The kernel boots fine, and the patch in [0] makes the PCI devices sh= ow >> >>> up. But I'm still getting initialisation errors like these: >> >>>=20 >> >>> [ 1.632709] pci 0000:01:00.0: BAR 0: error updating (0xe0000004 != =3D 0xffffffff) >> >>> [ 1.632714] pci 0000:01:00.0: BAR 0: error updating (high 0x00000= 0 !=3D 0xffffffff) >> >>> [ 1.632745] pci 0000:02:00.0: BAR 0: error updating (0xe0200004 != =3D 0xffffffff) >> >>> [ 1.632750] pci 0000:02:00.0: BAR 0: error updating (high 0x00000= 0 !=3D 0xffffffff) >> >>>=20 >> >>> and the WiFi drivers fail to initialise with what appears to me to be >> >>> errors related to the bus rather than to the drivers themselves: >> >>>=20 >> >>> [ 3.509878] ath: phy0: Mac Chip Rev 0xfffc0.f is not supported by= this driver >> >>> [ 3.517049] ath: phy0: Unable to initialize hardware; initializat= ion status: -95 >> >>> [ 3.524473] ath9k 0000:01:00.0: Failed to initialize device >> >>> [ 3.530081] ath9k: probe of 0000:01:00.0 failed with error -95 >> >>> [ 3.536012] ath10k_pci 0000:02:00.0: of_irq_parse_pci: failed wit= h rc=3D134 >> >>> [ 3.543049] pci 0000:00:02.0: enabling device (0140 -> 0142) >> >>> [ 3.548735] ath10k_pci 0000:02:00.0: can't change power state fro= m D3hot to D0 (config space inaccessible) >> >>> [ 3.588592] ath10k_pci 0000:02:00.0: failed to wake up device : -= 110 >> >>> [ 3.595098] ath10k_pci: probe of 0000:02:00.0 failed with error -= 110 >> >>>=20 >> >>> lspci looks OK, though: >> >>>=20 >> >>> # lspci >> >>> 00:01.0 PCI bridge: Marvell Technology Group Ltd. Device 6820 (rev 0= 4) >> >>> 00:02.0 PCI bridge: Marvell Technology Group Ltd. Device 6820 (rev 0= 4) >> >>> 00:03.0 PCI bridge: Marvell Technology Group Ltd. Device 6820 (rev 0= 4) >> >>> 01:00.0 Network controller: Qualcomm Atheros AR9287 Wireless Network= Adapter (PCI-Express) (rev 01) >> >>> 02:00.0 Network controller: Qualcomm Atheros QCA986x/988x 802.11ac W= ireless Network Adapter (rev ff) >> >>>=20 >> >>> Does anyone have any clue what could be going on here? Is this a bug= , or >> >>> did I miss something in my config or other initialisation? I've tried >> >>> with both the stock u-boot distributed with the board, and with an >> >>> upstream u-boot from latest master; doesn't seem to make any differe= nt. >> >> >> >> Can you try turning off CONFIG_PCIEASPM? We had a similar recent >> >> report at https://bugzilla.kernel.org/show_bug.cgi?id=3D209833 but I >> >> don't think we have a fix yet. >> > >> > Yes! Turning that off does indeed help! Thanks a bunch :) >> > >> > You mention that bisecting this would be helpful - I can try that >> > tomorrow; any idea when this was last working? >>=20 >> OK, so I tried to bisect this, but, erm, I couldn't find a working >> revision to start from? I went all the way back to 4.10 (which is the >> first version to include the device tree file for the Omnia), and even >> on that, the wireless cards were failing to initialise with ASPM >> enabled... > > I have no personal experience with this device; all I know is that the > bugzilla suggests that it worked in v5.4, which isn't much help. > > Possibly the apparent regression was really a .config change, i.e., > CONFIG_PCIEASPM was disabled in the v5.4 kernel vtolkm@ tested and it > "worked" but got enabled later and it started failing? Yeah, I suspect so. The OpenWrt config disables CONFIG_PCIEASPM by default and only turns it on for specific targets. So I guess that it's most likely that this has never worked... > Maybe the debug patch below would be worth trying to see if it makes > any difference? If it *does* help, try omitting the first hunk to see > if we just need to apply the quirk_enable_clear_retrain_link() quirk. Tried, doesn't help... -Toke 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=-3.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 99467C388F7 for ; Wed, 28 Oct 2020 15:10:28 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 19D52247B1 for ; Wed, 28 Oct 2020 15:10:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org 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l78sm2985291ild.30.2020.10.28.08.08.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Oct 2020 08:08:37 -0700 (PDT) Received: by alrua-x1.borgediget.toke.dk (Postfix, from userid 1000) id A23CC181CED; Wed, 28 Oct 2020 16:08:35 +0100 (CET) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= To: Bjorn Helgaas Subject: Re: PCI trouble on mvebu (Turris Omnia) In-Reply-To: <20201028144209.GA315566@bjorn-Precision-5520> References: <20201028144209.GA315566@bjorn-Precision-5520> X-Clacks-Overhead: GNU Terry Pratchett Date: Wed, 28 Oct 2020 16:08:35 +0100 Message-ID: <87pn52mlqk.fsf@toke.dk> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=toke@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201028_110845_384754_8887F3A1 X-CRM114-Status: GOOD ( 27.74 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-pci@vger.kernel.org, Ilias Apalodimas , vtolkm@googlemail.com, linux-arm-kernel@lists.infradead.org, Rob Herring 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 Qmpvcm4gSGVsZ2FhcyA8aGVsZ2Fhc0BrZXJuZWwub3JnPiB3cml0ZXM6Cgo+IE9uIFdlZCwgT2N0 IDI4LCAyMDIwIGF0IDAyOjM2OjEzUE0gKzAxMDAsIFRva2UgSMO4aWxhbmQtSsO4cmdlbnNlbiB3 cm90ZToKPj4gVG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2VuIDx0b2tlQHJlZGhhdC5jb20+IHdyaXRl czoKPj4gCj4+ID4gQmpvcm4gSGVsZ2FhcyA8aGVsZ2Fhc0BrZXJuZWwub3JnPiB3cml0ZXM6Cj4+ ID4KPj4gPj4gWytjYyB2dG9sa21dCj4+ID4+Cj4+ID4+IE9uIFR1ZSwgT2N0IDI3LCAyMDIwIGF0 IDA0OjQzOjIwUE0gKzAxMDAsIFRva2UgSMO4aWxhbmQtSsO4cmdlbnNlbiB3cm90ZToKPj4gPj4+ 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