From patchwork Fri Aug 16 16:50:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Miroshnichenko X-Patchwork-Id: 1148350 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="nNrIWLgv"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 4698V52r3mz9sML for ; Sat, 17 Aug 2019 02:51:25 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727178AbfHPQvW (ORCPT ); Fri, 16 Aug 2019 12:51:22 -0400 Received: from mta-02.yadro.com ([89.207.88.252]:51326 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727067AbfHPQvV (ORCPT ); Fri, 16 Aug 2019 12:51:21 -0400 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 3707B42EE3; Fri, 16 Aug 2019 16:51:20 +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= 1565974279; x=1567788680; bh=4FBRD8yK42SiYXr6aUuvlJDVMjXjanyoyQq 1TUHja0k=; b=nNrIWLgvXU7RRpAXoHx6Q6OkVrYNI4XOVkb6OWaJ7FWO5q1PuTU ANIg/n/CeXehrsYFfqB7qhd6JCyGr1z6WVnNNbrYfvP/rZuokRLNoIUChaU0DeeP psaD7w8iouexrqpwuSZnGttK2ApGpsLAQlFxc9x7OmdfombZsnBEmG58= 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 fRCzmCLd_3Ig; Fri, 16 Aug 2019 19:51:19 +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 BCD8D42EE5; Fri, 16 Aug 2019 19:51:12 +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; Fri, 16 Aug 2019 19:51:12 +0300 From: Sergey Miroshnichenko To: , CC: Bjorn Helgaas , , Sergey Miroshnichenko , Oliver O'Halloran Subject: [PATCH v5 18/23] powerpc/pci: Handle BAR movement Date: Fri, 16 Aug 2019 19:50:56 +0300 Message-ID: <20190816165101.911-19-s.miroshnichenko@yadro.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190816165101.911-1-s.miroshnichenko@yadro.com> References: <20190816165101.911-1-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 Add pcibios_rescan_prepare()/_done() hooks for the powerpc platform. Now if the device's driver supports movable BARs, pcibios_rescan_prepare() will be called after the device is stopped, and pcibios_rescan_done() - before it resumes. There are no memory requests to this device between the hooks, so it it safe to rebuild the EEH address cache during that. CC: Oliver O'Halloran Signed-off-by: Sergey Miroshnichenko --- arch/powerpc/kernel/pci-hotplug.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/powerpc/kernel/pci-hotplug.c b/arch/powerpc/kernel/pci-hotplug.c index 0b0cf8168b47..18cf13bba228 100644 --- a/arch/powerpc/kernel/pci-hotplug.c +++ b/arch/powerpc/kernel/pci-hotplug.c @@ -144,3 +144,13 @@ void pci_hp_add_devices(struct pci_bus *bus) pcibios_finish_adding_to_bus(bus); } EXPORT_SYMBOL_GPL(pci_hp_add_devices); + +void pcibios_rescan_prepare(struct pci_dev *pdev) +{ + eeh_addr_cache_rmv_dev(pdev); +} + +void pcibios_rescan_done(struct pci_dev *pdev) +{ + eeh_addr_cache_insert_dev(pdev); +}