From patchwork Fri Jan 11 15:36:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Miroshnichenko X-Patchwork-Id: 10758269 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5C6C8746 for ; Fri, 11 Jan 2019 15:43:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 493642848B for ; Fri, 11 Jan 2019 15:43:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3999F28574; Fri, 11 Jan 2019 15:43:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D4FD32848B for ; Fri, 11 Jan 2019 15:43:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731835AbfAKPnw (ORCPT ); Fri, 11 Jan 2019 10:43:52 -0500 Received: from mta-01.yadro.com ([89.207.88.251]:40062 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731777AbfAKPnv (ORCPT ); Fri, 11 Jan 2019 10:43:51 -0500 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 82B8D419C8 for ; Fri, 11 Jan 2019 15:37:26 +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= 1547221045; x=1549035446; bh=tpWsgAOLizXHJjAcfZNZlRhR6VTRi0YCnkM 7DrLR8d8=; b=b19kQNU2ac1LgBi6aAf0f0yGrE57aZfqX6dGl25CO5ZF8ow+n2r a0VQ4Y9JYkfnGgasEbgtgP9B6oIUSsULfZlVxR7LIoCvW8OLUpZyIDfMA3rnB/wl JEC4ZEZKiJ8ASBY49spTjZWn4vT3lhhY1rF/rQuwP8bnoAMBc4OMk6eQ= 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 Bx1ZDpzqhqI4 for ; Fri, 11 Jan 2019 18:37:25 +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 2F8804199C for ; Fri, 11 Jan 2019 18:37:23 +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; Fri, 11 Jan 2019 18:37:22 +0300 From: Sergey Miroshnichenko To: CC: , Sergey Miroshnichenko Subject: [PATCH RFC v2 08/21] PCI: Include fixed BARs into the bus size calculating Date: Fri, 11 Jan 2019 18:36:54 +0300 Message-ID: <20190111153707.10140-9-s.miroshnichenko@yadro.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190111153707.10140-1-s.miroshnichenko@yadro.com> References: <20190111153707.10140-1-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 X-Virus-Scanned: ClamAV using ClamSMTP 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 e0c5e2c947d6..99aa78668e9e 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 && @@ -1383,6 +1391,8 @@ 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; } } }