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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 E8C57C433E0 for ; Tue, 16 Jun 2020 16:02:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C54522071A for ; Tue, 16 Jun 2020 16:02:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592323366; bh=bJ5vHl2H8/BvNDVhsIs4pfBDlyCaMBFtm0KMc8o1C+U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UAiNG9lgeRAf6GV/EWOUi2Rr9gyUUTGB6hyBHLpp9tb0nwIoa1nn5dlL2XWDEmHIi eyIaCLaVyImsHtKd8cyvQ2ub/aSZa4j4GyLpVUq8R2qlDktn+3NPv3VEhB/mHDPq6o USvISMCUNU4RmuhJdnX8Cma6OR4DYRJ6d5XXBtyQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732635AbgFPPvA (ORCPT ); Tue, 16 Jun 2020 11:51:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:47034 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732205AbgFPPuv (ORCPT ); Tue, 16 Jun 2020 11:50:51 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3B444207C4; Tue, 16 Jun 2020 15:50:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592322650; bh=bJ5vHl2H8/BvNDVhsIs4pfBDlyCaMBFtm0KMc8o1C+U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=s1fKUX3+M0Lq6ZSvmq3uanhrvCdcr5uJMgqez4iYxkkAdB7YROpJkCS1AsffQ2ilH i7bapP6WkYq8zzlzMUs4njnN5ZsP3FVsCCgK159S5hqdO3CFJTdM9JXo6NDirYQBuO 6lGcmyVXtvIvVTReGsJZWSVHp2Y196ZPEinahk5E= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Xiaochun Lee , Bjorn Helgaas Subject: [PATCH 5.6 050/161] x86/PCI: Mark Intel C620 MROMs as having non-compliant BARs Date: Tue, 16 Jun 2020 17:34:00 +0200 Message-Id: <20200616153108.760510470@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200616153106.402291280@linuxfoundation.org> References: <20200616153106.402291280@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Xiaochun Lee commit 1574051e52cb4b5b7f7509cfd729b76ca1117808 upstream. The Intel C620 Platform Controller Hub has MROM functions that have non-PCI registers (undocumented in the public spec) where BAR 0 is supposed to be, which results in messages like this: pci 0000:00:11.0: [Firmware Bug]: reg 0x30: invalid BAR (can't size) Mark these MROM functions as having non-compliant BARs so we don't try to probe any of them. There are no other BARs on these devices. See the Intel C620 Series Chipset Platform Controller Hub Datasheet, May 2019, Document Number 336067-007US, sec 2.1, 35.5, 35.6. [bhelgaas: commit log, add 0xa26d] Link: https://lore.kernel.org/r/1589513467-17070-1-git-send-email-lixiaochun.2888@163.com Signed-off-by: Xiaochun Lee Signed-off-by: Bjorn Helgaas Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- arch/x86/pci/fixup.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/arch/x86/pci/fixup.c +++ b/arch/x86/pci/fixup.c @@ -572,6 +572,10 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_IN DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6f60, pci_invalid_bar); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fa0, pci_invalid_bar); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fc0, pci_invalid_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0xa1ec, pci_invalid_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0xa1ed, pci_invalid_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0xa26c, pci_invalid_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0xa26d, pci_invalid_bar); /* * Device [1022:7808]