From patchwork Mon Feb 4 15:35:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Miroshnichenko X-Patchwork-Id: 1036017 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=yadro.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=yadro.com header.i=@yadro.com header.b="RvKBOAtf"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43tWyZ37stz9s6w for ; Tue, 5 Feb 2019 02:36:22 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731254AbfBDPgV (ORCPT ); Mon, 4 Feb 2019 10:36:21 -0500 Received: from mta-01.yadro.com ([89.207.88.251]:49282 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730135AbfBDPgV (ORCPT ); Mon, 4 Feb 2019 10:36:21 -0500 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 65DB241969; Mon, 4 Feb 2019 15:36:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=yadro.com; h= content-type:content-type:content-transfer-encoding:mime-version :references:in-reply-to:x-mailer:message-id:date:date:subject :subject:from:from:received:received:received; s=mta-01; t= 1549294578; x=1551108979; bh=jwH0P9Xag/Shas342g+4t1xNKBCTKGrg818 /YDwT5ow=; b=RvKBOAtfHDU2AK6iq2KyidYbTzkcBoNsS6qZJ6g5WWDYeAL1JPR Y6ie+vvJ6Jlt7PU3plNmPSuuckZo388fhXMGy8jgpvfvQYBMMoIHb1vTZiL/rVEg hgxgUP/kbb0Ae/FG1ogf6LNk1/IVGmGOciM6le5Al7IBrp8BO/NSyKMM= X-Virus-Scanned: amavisd-new at yadro.com Received: from mta-01.yadro.com ([127.0.0.1]) by localhost (mta-01.yadro.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id AHYuLdBfHVnP; Mon, 4 Feb 2019 18:36:18 +0300 (MSK) Received: from T-EXCH-02.corp.yadro.com (t-exch-02.corp.yadro.com [172.17.10.102]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mta-01.yadro.com (Postfix) with ESMTPS id B11AF41258; Mon, 4 Feb 2019 18:36:11 +0300 (MSK) Received: from NB-148.yadro.com (172.17.15.60) by T-EXCH-02.corp.yadro.com (172.17.10.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.669.32; Mon, 4 Feb 2019 18:36:11 +0300 From: Sergey Miroshnichenko To: CC: Bjorn Helgaas , Rajat Jain , , Sergey Miroshnichenko Subject: [PATCH RFC v3 09/21] PCI: Mark immovable BARs with PCI_FIXED Date: Mon, 4 Feb 2019 18:35:49 +0300 Message-ID: <20190204153601.7576-10-s.miroshnichenko@yadro.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190204153601.7576-1-s.miroshnichenko@yadro.com> References: <20190204153601.7576-1-s.miroshnichenko@yadro.com> MIME-Version: 1.0 X-Originating-IP: [172.17.15.60] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-02.corp.yadro.com (172.17.10.102) Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org If a PCIe device driver doesn't yet have support for movable BARs, mark device's BARs with IORESOURCE_PCI_FIXED. Signed-off-by: Sergey Miroshnichenko --- drivers/pci/probe.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 7fe68b4f04bf..1f50eb556d28 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -3186,6 +3186,21 @@ static void pci_bus_rescan_prepare(struct pci_bus *bus) } else if (dev->driver && dev->driver->rescan_prepare) { dev->driver->rescan_prepare(dev); + } else if (dev->driver || ((dev->class >> 8) == PCI_CLASS_DISPLAY_VGA)) { + int i; + + for (i = 0; i < PCI_NUM_RESOURCES; i++) { + struct resource *r = &dev->resource[i]; + + if (!r->flags || !r->parent || + (r->flags & IORESOURCE_UNSET) || + (r->flags & IORESOURCE_PCI_FIXED)) + continue; + + r->flags |= IORESOURCE_PCI_FIXED; + pci_warn(dev, "%s: no support for movable BARs, mark BAR %d (%pR) as fixed\n", + __func__, i, r); + } } } }