virtio-iommu: Call memory notifiers in attach/detach
Call the memory notifiers when attaching an endpoint to a domain, to replay existing mappings, and when detaching the endpoint, to remove all mappings. Signed-off-by: Bharat Bhushan <bbhushan2@marvell.com> Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Message-Id: <20201030180510.747225-5-jean-philippe@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -170,11 +170,39 @@ static void virtio_iommu_notify_unmap(IOMMUMemoryRegion *mr, hwaddr virt_start,
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memory_region_notify_iommu(mr, 0, entry);
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memory_region_notify_iommu(mr, 0, entry);
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}
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}
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static gboolean virtio_iommu_notify_unmap_cb(gpointer key, gpointer value,
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gpointer data)
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{
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VirtIOIOMMUInterval *interval = (VirtIOIOMMUInterval *) key;
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IOMMUMemoryRegion *mr = (IOMMUMemoryRegion *) data;
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virtio_iommu_notify_unmap(mr, interval->low, interval->high);
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return false;
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}
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static gboolean virtio_iommu_notify_map_cb(gpointer key, gpointer value,
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gpointer data)
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{
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VirtIOIOMMUMapping *mapping = (VirtIOIOMMUMapping *) value;
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VirtIOIOMMUInterval *interval = (VirtIOIOMMUInterval *) key;
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IOMMUMemoryRegion *mr = (IOMMUMemoryRegion *) data;
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virtio_iommu_notify_map(mr, interval->low, interval->high,
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mapping->phys_addr, mapping->flags);
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return false;
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}
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static void virtio_iommu_detach_endpoint_from_domain(VirtIOIOMMUEndpoint *ep)
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static void virtio_iommu_detach_endpoint_from_domain(VirtIOIOMMUEndpoint *ep)
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{
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{
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VirtIOIOMMUDomain *domain = ep->domain;
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if (!ep->domain) {
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if (!ep->domain) {
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return;
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return;
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}
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}
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g_tree_foreach(domain->mappings, virtio_iommu_notify_unmap_cb,
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ep->iommu_mr);
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QLIST_REMOVE(ep, next);
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QLIST_REMOVE(ep, next);
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ep->domain = NULL;
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ep->domain = NULL;
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}
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}
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@ -317,6 +345,10 @@ static int virtio_iommu_attach(VirtIOIOMMU *s,
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ep->domain = domain;
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ep->domain = domain;
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/* Replay domain mappings on the associated memory region */
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g_tree_foreach(domain->mappings, virtio_iommu_notify_map_cb,
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ep->iommu_mr);
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return VIRTIO_IOMMU_S_OK;
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return VIRTIO_IOMMU_S_OK;
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}
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}
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