From patchwork Mon Apr 27 18:23:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Miroshnichenko X-Patchwork-Id: 11513145 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4309A913 for ; Mon, 27 Apr 2020 18:24:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 27FE4214D8 for ; Mon, 27 Apr 2020 18:24:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=yadro.com header.i=@yadro.com header.b="OKt49nuS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726226AbgD0SYa (ORCPT ); Mon, 27 Apr 2020 14:24:30 -0400 Received: from mta-02.yadro.com ([89.207.88.252]:53048 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726442AbgD0SY3 (ORCPT ); Mon, 27 Apr 2020 14:24:29 -0400 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 2E15F4C870; Mon, 27 Apr 2020 18:24:27 +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= 1588011866; x=1589826267; bh=fu1E8WOX4eOpLnmJsfb/+rhytgo+CrbLTo9 FEu6gt2g=; b=OKt49nuSrMkPbLRfgGXpcIPSg8Iazs5Pf57sCFNfGySZjBHQhrw QhtOeZZav+utZozC0YybMAaFkSSgWu7L7FSSUpxViC9RV3q4cHJT6Zoj/dai3bzw 6fX80HxY15/tWK3i5gy2VV0mEtCSZxKeHVI2j+A+AWzRtZygmrG7/67M= 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 sQqm9Z39-T3h; Mon, 27 Apr 2020 21:24:26 +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 BD22D4C84F; Mon, 27 Apr 2020 21:24:13 +0300 (MSK) Received: from NB-148.yadro.com (172.17.15.136) 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, 27 Apr 2020 21:24:14 +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?= , Ard Biesheuvel , David Laight , Rajat Jain , , Sergei Miroshnichenko Subject: [PATCH v8 23/24] PCI/portdrv: Declare support of movable BARs Date: Mon, 27 Apr 2020 21:23:57 +0300 Message-ID: <20200427182358.2067702-24-s.miroshnichenko@yadro.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200427182358.2067702-1-s.miroshnichenko@yadro.com> References: <20200427182358.2067702-1-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-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 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 empty hooks .rescan_prepare() and .rescan_done() to increase chances to allocate new BARs for new devices. Signed-off-by: Sergei Miroshnichenko --- drivers/pci/pcie/portdrv_pci.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 160d67c59310..df1faf2fed86 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -205,6 +205,14 @@ static const struct pci_error_handlers pcie_portdrv_err_handler = { .resume = pcie_portdrv_err_resume, }; +static void pcie_portdrv_rescan_prepare(struct pci_dev *pdev) +{ +} + +static void pcie_portdrv_rescan_done(struct pci_dev *pdev) +{ +} + static struct pci_driver pcie_portdriver = { .name = "pcieport", .id_table = &port_pci_ids[0], @@ -215,6 +223,9 @@ static struct pci_driver pcie_portdriver = { .err_handler = &pcie_portdrv_err_handler, + .rescan_prepare = pcie_portdrv_rescan_prepare, + .rescan_done = pcie_portdrv_rescan_done, + .driver.pm = PCIE_PORTDRV_PM_OPS, };