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: 1148383 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4699Qq33QYz9sML for ; Sat, 17 Aug 2019 03:33:39 +1000 (AEST) 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 bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4699Qq1x0dzDrPZ for ; Sat, 17 Aug 2019 03:33:39 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=yadro.com (client-ip=89.207.88.252; helo=mta-01.yadro.com; envelope-from=s.miroshnichenko@yadro.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=yadro.com Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=yadro.com header.i=@yadro.com header.b="nNrIWLgv"; dkim-atps=neutral Received: from mta-01.yadro.com (mta-02.yadro.com [89.207.88.252]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4698V34qMyzDqvh for ; Sat, 17 Aug 2019 02:51:23 +1000 (AEST) 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: , 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) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sergey Miroshnichenko , Oliver O'Halloran , Bjorn Helgaas , linux@yadro.com Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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); +}