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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 BD3E2C282D7 for ; Mon, 4 Feb 2019 15:36:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8E33E214DA for ; Mon, 4 Feb 2019 15:36:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=yadro.com header.i=@yadro.com header.b="vO7UiyYm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731337AbfBDPgZ (ORCPT ); Mon, 4 Feb 2019 10:36:25 -0500 Received: from mta-01.yadro.com ([89.207.88.251]:49270 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731330AbfBDPgY (ORCPT ); Mon, 4 Feb 2019 10:36:24 -0500 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 388DB41949; Mon, 4 Feb 2019 15:36:23 +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= 1549294582; x=1551108983; bh=NPALoNSPN/ZGR/JOuhWP/ys3Y1RWMqEvoA5 Em/9/5wo=; b=vO7UiyYmZ21FFx2cMvN5NXbFYjhY+wAAALbKTPSm8OGGE+p+0Tq mBMFP+vH9nbfSewXigllwK+8TwGVmOBOc+K6E9HMDlzsxpevHz8LU5o+zpthJE5a /1n6PGpnp4H1GYEViIMDTGuRcIfQeZr2gdtVAt58fZSg8Br2JZgFZN94= 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 7SKxBz0YRsX3; Mon, 4 Feb 2019 18:36:22 +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 D50C041958; Mon, 4 Feb 2019 18:36:12 +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 18:36:12 +0300 From: Sergey Miroshnichenko To: CC: Bjorn Helgaas , Rajat Jain , , Sergey Miroshnichenko Subject: [PATCH RFC v3 13/21] PCI: Include fixed BARs into the bus size calculating Date: Mon, 4 Feb 2019 18:35:53 +0300 Message-ID: <20190204153601.7576-14-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 Content-Transfer-Encoding: 8bit Content-Type: text/plain 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 The only difference between the fixed and movable BARs is an offset preservation during the release+reassign procedure on PCIe rescan. When fixed BARs are included into the result of pbus_size_mem(), these BARs can be restricted: assign them to direct parents only. Signed-off-by: Sergey Miroshnichenko --- drivers/pci/setup-bus.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 92ce22d32f76..e6fba514e940 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -1044,12 +1044,20 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, struct resource *r = &dev->resource[i]; resource_size_t r_size; - if (r->parent || (r->flags & IORESOURCE_PCI_FIXED) || + if (r->parent || ((r->flags & mask) != type && (r->flags & mask) != type2 && (r->flags & mask) != type3)) continue; r_size = resource_size(r); + + if (r->flags & IORESOURCE_PCI_FIXED) { + if (pci_movable_bars_enabled()) + size += r_size; + + continue; + } + #ifdef CONFIG_PCI_IOV /* put SRIOV requested res to the optional list */ if (realloc_head && i >= PCI_IOV_RESOURCES && @@ -1388,6 +1396,8 @@ static void pdev_assign_fixed_resources(struct pci_dev *dev) while (b && !r->parent) { assign_fixed_resource_on_bus(b, r); b = b->parent; + if (!r->parent && pci_movable_bars_enabled()) + break; } } } -- 2.20.1