From patchwork Tue Oct 31 05:07:04 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Liu, Yi L" X-Patchwork-Id: 832246 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3yR0G042vLz9sPm for ; Tue, 31 Oct 2017 16:26:48 +1100 (AEDT) Received: from localhost ([::1]:43770 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e9P4Y-00035L-JM for incoming@patchwork.ozlabs.org; Tue, 31 Oct 2017 01:26:46 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37555) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e9P1b-0001AX-JO for qemu-devel@nongnu.org; Tue, 31 Oct 2017 01:23:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e9P1Y-0004qr-6c for qemu-devel@nongnu.org; Tue, 31 Oct 2017 01:23:43 -0400 Received: from mga07.intel.com ([134.134.136.100]:53480) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e9P1X-0004cw-RR for qemu-devel@nongnu.org; Tue, 31 Oct 2017 01:23:40 -0400 Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga105.jf.intel.com with ESMTP; 30 Oct 2017 22:23:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.44,322,1505804400"; d="scan'208";a="169289791" Received: from sky-dev.bj.intel.com ([10.238.144.127]) by fmsmga005.fm.intel.com with ESMTP; 30 Oct 2017 22:23:36 -0700 From: "Liu, Yi L" To: qemu-devel@nongnu.org, mst@redhat.com, david@gibson.dropbear.id.au, pbonzini@redhat.com, alex.williamson@redhat.com Date: Tue, 31 Oct 2017 13:07:04 +0800 Message-Id: <1509426425-23890-6-git-send-email-yi.l.liu@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1509426425-23890-1-git-send-email-yi.l.liu@linux.intel.com> References: <1509426425-23890-1-git-send-email-yi.l.liu@linux.intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.100 Subject: [Qemu-devel] [PATCH 5/6] vfio/pci: add notify framework based on IOMMUObject 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: tianyu.lan@intel.com, "Liu, Yi L" , kevin.tian@intel.com, yi.l.liu@intel.com, jasowang@redhat.com, peterx@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This patch introduce a notify framework for IOMMUObject.iommu_notifiers. Introduce VFIOGuestIOMMUObject is to link VFIO Container and the new IOMMUObject notififiers. VFIOGuestIOMMUObject instance is allocated when device is assigned and meanwhile vIOMMU is exposed to guest. If there is IOMMUObject behind the device AddressSpace(a.ka vIOMMU exposed). The VFIOGuestIOMMUObject instance would be allocated and inserted to the VFIOContainer.giommu_object_list. Signed-off-by: Liu, Yi L --- hw/vfio/pci.c | 39 ++++++++++++++++++++++++++++++++++++++- include/hw/vfio/vfio-common.h | 8 ++++++++ 2 files changed, 46 insertions(+), 1 deletion(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index c977ee3..5b77c7e 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -2642,6 +2642,8 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pdev); VFIODevice *vbasedev_iter; VFIOGroup *group; + AddressSpace *as; + IOMMUObject *iommu; char *tmp, group_path[PATH_MAX], *group_name; Error *err = NULL; ssize_t len; @@ -2694,7 +2696,8 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) trace_vfio_realize(vdev->vbasedev.name, groupid); - group = vfio_get_group(groupid, pci_device_iommu_address_space(pdev), errp); + as = pci_device_iommu_address_space(pdev); + group = vfio_get_group(groupid, as, errp); if (!group) { goto error; } @@ -2877,6 +2880,17 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) vfio_register_req_notifier(vdev); vfio_setup_resetfn_quirk(vdev); + iommu = address_space_iommu_get(as); + if (iommu != NULL) { + VFIOGuestIOMMUObject *giommu; + giommu = g_malloc0(sizeof(*giommu)); + giommu->iommu = iommu; + giommu->container = group->container; + QLIST_INSERT_HEAD(&group->container->giommu_object_list, + giommu, + giommu_next); + } + return; out_teardown: @@ -2907,6 +2921,28 @@ static void vfio_instance_finalize(Object *obj) vfio_put_group(group); } +static void vfio_release_iommu_object(PCIDevice *pdev) +{ + VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pdev); + AddressSpace *as; + IOMMUObject *iommu; + + as = pci_device_iommu_address_space(pdev); + iommu = address_space_iommu_get(as); + if (iommu != NULL) { + VFIOGuestIOMMUObject *giommu, *tmp; + VFIOGroup *group; + group = vdev->vbasedev.group; + + QLIST_FOREACH_SAFE(giommu, + &group->container->giommu_object_list, + giommu_next, tmp) { + QLIST_REMOVE(giommu, giommu_next); + g_free(giommu); + } + } + return; +} static void vfio_exitfn(PCIDevice *pdev) { VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pdev); @@ -2915,6 +2951,7 @@ static void vfio_exitfn(PCIDevice *pdev) vfio_unregister_err_notifier(vdev); pci_device_set_intx_routing_notifier(&vdev->pdev, NULL); vfio_disable_interrupts(vdev); + vfio_release_iommu_object(pdev); if (vdev->intx.mmap_timer) { timer_free(vdev->intx.mmap_timer); } diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 702a085..e4963cc 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -88,6 +88,7 @@ typedef struct VFIOContainer { * future */ QLIST_HEAD(, VFIOGuestIOMMUMR) giommu_mr_list; + QLIST_HEAD(, VFIOGuestIOMMUObject) giommu_object_list; QLIST_HEAD(, VFIOHostDMAWindow) hostwin_list; QLIST_HEAD(, VFIOGroup) group_list; QLIST_ENTRY(VFIOContainer) next; @@ -101,6 +102,13 @@ typedef struct VFIOGuestIOMMUMR { QLIST_ENTRY(VFIOGuestIOMMUMR) giommu_next; } VFIOGuestIOMMUMR; +typedef struct VFIOGuestIOMMUObject { + VFIOContainer *container; + IOMMUObject *iommu; + IOMMUNotifier n; + QLIST_ENTRY(VFIOGuestIOMMUObject) giommu_next; +} VFIOGuestIOMMUObject; + typedef struct VFIOHostDMAWindow { hwaddr min_iova; hwaddr max_iova;