From patchwork Fri Dec 18 17:40:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Miroshnichenko X-Patchwork-Id: 11982669 X-Patchwork-Delegate: bhelgaas@google.com 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,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 D6A92C352A2 for ; Fri, 18 Dec 2020 17:42:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ABE8923B54 for ; Fri, 18 Dec 2020 17:42:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728280AbgLRRmv (ORCPT ); Fri, 18 Dec 2020 12:42:51 -0500 Received: from mta-02.yadro.com ([89.207.88.252]:38572 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727981AbgLRRmv (ORCPT ); Fri, 18 Dec 2020 12:42:51 -0500 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 063E3413D2; Fri, 18 Dec 2020 17:41:33 +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= 1608313291; x=1610127692; bh=faXA1qHhZ+GvL5/hTU6Bm/jkEm46iZZ2A5G poLgSabg=; b=OSP40vJJ/x6Fe3nHZjvgjTanR/79u6CLTfpMEFLUg6QB3a1Ux8L Cwz8aaNfFmiGIze1gVaSfml8Na6SDQadtEFoKJmaQz8pTnXXu1IauKzRKWqYOq++ 3YXT0G9O7GJxlwxsgN6RhVOnBt3Z6+WR8TaTCpjFRhTUwOXXhyge5PO4= 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 UQ7DE-EDqd8z; Fri, 18 Dec 2020 20:41:31 +0300 (MSK) Received: from T-EXCH-03.corp.yadro.com (t-exch-03.corp.yadro.com [172.17.100.103]) (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 B5FFD413CE; Fri, 18 Dec 2020 20:41:10 +0300 (MSK) Received: from NB-148.yadro.com (172.17.15.136) by T-EXCH-03.corp.yadro.com (172.17.100.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.669.32; Fri, 18 Dec 2020 20:41:10 +0300 From: Sergei Miroshnichenko To: CC: Bjorn Helgaas , Lukas Wunner , Stefan Roese , Andy Lavr , =?utf-8?q?Chris?= =?utf-8?q?tian_K=C3=B6nig?= , David Laight , Rajat Jain , , Sergei Miroshnichenko Subject: [PATCH v9 23/26] PCI/portdrv: Declare support of movable BARs Date: Fri, 18 Dec 2020 20:40:08 +0300 Message-ID: <20201218174011.340514-24-s.miroshnichenko@yadro.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201218174011.340514-1-s.miroshnichenko@yadro.com> References: <20201218174011.340514-1-s.miroshnichenko@yadro.com> MIME-Version: 1.0 X-Originating-IP: [172.17.15.136] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-03.corp.yadro.com (172.17.100.103) Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Currently there are no reliable way to determine if a driver uses BARs of its devices (their struct resource don't always have a child), so if it doesn't explicitly support movable BARs, they are considered fixed. The portdrv driver for PCI switches don't use BARs, so add a new hook .bar_fixed() { return false; } to increase the chances to allocate new BARs for new devices. Signed-off-by: Sergei Miroshnichenko --- drivers/pci/pcie/portdrv_pci.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 0b250bc5f405..3043f7e4d3c1 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -212,6 +212,11 @@ static const struct pci_error_handlers pcie_portdrv_err_handler = { .resume = pcie_portdrv_err_resume, }; +static bool pcie_portdrv_bar_fixed(struct pci_dev *pdev, int resno) +{ + return false; +} + static struct pci_driver pcie_portdriver = { .name = "pcieport", .id_table = &port_pci_ids[0], @@ -222,6 +227,8 @@ static struct pci_driver pcie_portdriver = { .err_handler = &pcie_portdrv_err_handler, + .bar_fixed = pcie_portdrv_bar_fixed, + .driver.pm = PCIE_PORTDRV_PM_OPS, };