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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5SPR00MB235 X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 104.47.40.85 Subject: [Qemu-devel] [PATCH v4 3/5] virtio-iommu: Call iommu notifier for attach/detach 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: wei@redhat.com, kevin.tian@intel.com, Bharat Bhushan , marc.zyngier@arm.com, tn@semihalf.com, will.deacon@arm.com, drjones@redhat.com, robin.murphy@arm.com, christoffer.dall@linaro.org, bharatb.yadav@gmail.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" iommu-notifier are called when a device is attached or detached to as address-space. This is needed for VFIO. Signed-off-by: Bharat Bhushan Signed-off-by: Eric Auger --- v3->v4: Follwoig fixes by Eric - Return "false" from virtio_iommu_mapping_unmap/map() - Calling virtio_iommu_notify_unmap/map() for all device in as hw/virtio/virtio-iommu.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index 085e972..ff91bce 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -127,8 +127,42 @@ static void virtio_iommu_notify_unmap(IOMMUMemoryRegio= n *mr, hwaddr iova, memory_region_notify_iommu(mr, entry); } =20 +static gboolean virtio_iommu_mapping_unmap(gpointer key, gpointer value, + gpointer data) +{ + viommu_mapping *mapping =3D (viommu_mapping *) value; + IOMMUMemoryRegion *mr =3D (IOMMUMemoryRegion *) data; + + virtio_iommu_notify_unmap(mr, mapping->virt_addr, mapping->size); + + return false; +} + +static gboolean virtio_iommu_mapping_map(gpointer key, gpointer value, + gpointer data) +{ + viommu_mapping *mapping =3D (viommu_mapping *) value; + IOMMUMemoryRegion *mr =3D (IOMMUMemoryRegion *) data; + + virtio_iommu_notify_map(mr, mapping->virt_addr, mapping->phys_addr, + mapping->size); + + return false; +} + static void virtio_iommu_detach_dev_from_as(viommu_dev *dev) { + VirtioIOMMUNotifierNode *node; + VirtIOIOMMU *s =3D dev->viommu; + viommu_as *as =3D dev->as; + + QLIST_FOREACH(node, &s->notifiers_list, next) { + if (dev->id =3D=3D node->iommu_dev->devfn) { + g_tree_foreach(as->mappings, virtio_iommu_mapping_unmap, + &node->iommu_dev->iommu_mr); + } + } + QLIST_REMOVE(dev, next); dev->as =3D NULL; } @@ -260,6 +294,7 @@ static int virtio_iommu_attach(VirtIOIOMMU *s, uint32_t asid =3D le32_to_cpu(req->address_space); uint32_t devid =3D le32_to_cpu(req->device); uint32_t reserved =3D le32_to_cpu(req->reserved); + VirtioIOMMUNotifierNode *node; viommu_as *as; viommu_dev *dev; =20 @@ -284,6 +319,14 @@ static int virtio_iommu_attach(VirtIOIOMMU *s, dev->as =3D as; g_tree_ref(as->mappings); =20 + /* replay existing address space mappings on the associated mr */ + QLIST_FOREACH(node, &s->notifiers_list, next) { + if (devid =3D=3D node->iommu_dev->devfn) { + g_tree_foreach(as->mappings, virtio_iommu_mapping_map, + &node->iommu_dev->iommu_mr); + } + } + return VIRTIO_IOMMU_S_OK; } =20 --=20 1.9.3