From patchwork Wed May 11 14:58:08 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 9071631 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 335659F6FA for ; Wed, 11 May 2016 15:02:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8B45A201CE for ; Wed, 11 May 2016 15:02:47 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C357D201C0 for ; Wed, 11 May 2016 15:02:46 +0000 (UTC) Received: from localhost ([::1]:52756 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b0Vev-0008KV-UL for patchwork-qemu-devel@patchwork.kernel.org; Wed, 11 May 2016 11:02:45 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51784) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b0Vao-0008Us-8e for qemu-devel@nongnu.org; Wed, 11 May 2016 10:58:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b0Vaj-0007MJ-LO for qemu-devel@nongnu.org; Wed, 11 May 2016 10:58:30 -0400 Received: from e06smtp17.uk.ibm.com ([195.75.94.113]:34486) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b0Vaj-0007LV-9D for qemu-devel@nongnu.org; Wed, 11 May 2016 10:58:25 -0400 Received: from localhost by e06smtp17.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 11 May 2016 15:58:21 +0100 X-IBM-Helo: d06dlp02.portsmouth.uk.ibm.com X-IBM-MailFrom: cornelia.huck@de.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by d06dlp02.portsmouth.uk.ibm.com (Postfix) with ESMTP id 5397A2190056 for ; Wed, 11 May 2016 15:57:56 +0100 (BST) Received: from d06av11.portsmouth.uk.ibm.com (d06av11.portsmouth.uk.ibm.com [9.149.37.252]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u4BEwKNA1311120 for ; Wed, 11 May 2016 14:58:20 GMT Received: from d06av11.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av11.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u4BEwKwe000710 for ; Wed, 11 May 2016 08:58:20 -0600 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d06av11.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u4BEwDBb032732 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA256 bits=256 verify=NO); Wed, 11 May 2016 08:58:19 -0600 From: Cornelia Huck To: qemu-devel@nongnu.org Date: Wed, 11 May 2016 16:58:08 +0200 Message-Id: <1462978692-33738-17-git-send-email-cornelia.huck@de.ibm.com> X-Mailer: git-send-email 2.6.6 In-Reply-To: <1462978692-33738-1-git-send-email-cornelia.huck@de.ibm.com> References: <1462978692-33738-1-git-send-email-cornelia.huck@de.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16051114-0005-0000-0000-000019065075 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 195.75.94.113 Subject: [Qemu-devel] [PATCH v2 for-2.7 16/20] s390x/pci: introduce S390PCIBusDevice.iommu_enabled X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Cornelia Huck , borntraeger@de.ibm.com, jfrei@linux.vnet.ibm.com, Yi Min Zhao , agraf@suse.de Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Yi Min Zhao We introduce iommu_enabled field for S390PCIBusDevice struct to track whether the iommu has been enabled for the device. This allows us to stop temporarily changing ->configured while en/disabling the iommu and to do conditional cleanup later. Signed-off-by: Yi Min Zhao Reviewed-by: Pierre Morel Signed-off-by: Cornelia Huck --- hw/s390x/s390-pci-bus.c | 9 ++++----- hw/s390x/s390-pci-bus.h | 1 + 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c index b934fc8..5d54c73 100644 --- a/hw/s390x/s390-pci-bus.c +++ b/hw/s390x/s390-pci-bus.c @@ -340,7 +340,8 @@ static IOMMUTLBEntry s390_translate_iommu(MemoryRegion *iommu, hwaddr addr, .perm = IOMMU_NONE, }; - if (!pbdev->configured || !pbdev->pdev || !(pbdev->fh & FH_ENABLED)) { + if (!pbdev->configured || !pbdev->pdev || + !(pbdev->fh & FH_ENABLED) || !pbdev->iommu_enabled) { return ret; } @@ -480,21 +481,19 @@ static const MemoryRegionOps s390_msi_ctrl_ops = { void s390_pci_iommu_enable(S390PCIBusDevice *pbdev) { - pbdev->configured = false; uint64_t size = pbdev->pal - pbdev->pba + 1; memory_region_init_iommu(&pbdev->iommu_mr, OBJECT(&pbdev->mr), &s390_iommu_ops, "iommu-s390", size); memory_region_add_subregion(&pbdev->mr, pbdev->pba, &pbdev->iommu_mr); - pbdev->configured = true; + pbdev->iommu_enabled = true; } void s390_pci_iommu_disable(S390PCIBusDevice *pbdev) { - pbdev->configured = false; memory_region_del_subregion(&pbdev->mr, &pbdev->iommu_mr); object_unparent(OBJECT(&pbdev->iommu_mr)); - pbdev->configured = true; + pbdev->iommu_enabled = false; } static void s390_pcihost_init_as(S390pciState *s) diff --git a/hw/s390x/s390-pci-bus.h b/hw/s390x/s390-pci-bus.h index 426f690..8b64884 100644 --- a/hw/s390x/s390-pci-bus.h +++ b/hw/s390x/s390-pci-bus.h @@ -219,6 +219,7 @@ typedef struct S390PCIBusDevice { bool configured; bool error_state; bool lgstg_blocked; + bool iommu_enabled; uint32_t fh; uint32_t fid; uint64_t g_iota;