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[PATCH v9 6/9] virtio-iommu: Call iommu notifier for attach/detach
From: |
Bharat Bhushan |
Subject: |
[PATCH v9 6/9] virtio-iommu: Call iommu notifier for attach/detach |
Date: |
Mon, 23 Mar 2020 14:16:14 +0530 |
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 <address@hidden>
---
hw/virtio/virtio-iommu.c | 49 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)
diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c
index bd464d4fb3..88849aa7b9 100644
--- a/hw/virtio/virtio-iommu.c
+++ b/hw/virtio/virtio-iommu.c
@@ -49,6 +49,7 @@ typedef struct VirtIOIOMMUEndpoint {
uint32_t id;
VirtIOIOMMUDomain *domain;
QLIST_ENTRY(VirtIOIOMMUEndpoint) next;
+ VirtIOIOMMU *viommu;
} VirtIOIOMMUEndpoint;
typedef struct VirtIOIOMMUInterval {
@@ -155,11 +156,48 @@ static void virtio_iommu_notify_unmap(IOMMUMemoryRegion
*mr, hwaddr iova,
memory_region_notify_iommu(mr, 0, entry);
}
+static gboolean virtio_iommu_mapping_unmap(gpointer key, gpointer value,
+ gpointer data)
+{
+ VirtIOIOMMUInterval *interval = (VirtIOIOMMUInterval *) key;
+ IOMMUMemoryRegion *mr = (IOMMUMemoryRegion *) data;
+
+ virtio_iommu_notify_unmap(mr, interval->low,
+ interval->high - interval->low + 1);
+
+ return false;
+}
+
+static gboolean virtio_iommu_mapping_map(gpointer key, gpointer value,
+ gpointer data)
+{
+ VirtIOIOMMUMapping *mapping = (VirtIOIOMMUMapping *) value;
+ VirtIOIOMMUInterval *interval = (VirtIOIOMMUInterval *) key;
+ IOMMUMemoryRegion *mr = (IOMMUMemoryRegion *) data;
+
+ virtio_iommu_notify_map(mr, interval->low, mapping->phys_addr,
+ interval->high - interval->low + 1);
+
+ return false;
+}
+
static void virtio_iommu_detach_endpoint_from_domain(VirtIOIOMMUEndpoint *ep)
{
+ VirtIOIOMMU *s = ep->viommu;
+ VirtIOIOMMUDomain *domain = ep->domain;
+ IOMMUDevice *sdev;
+
if (!ep->domain) {
return;
}
+
+ QLIST_FOREACH(sdev, &s->notifiers_list, next) {
+ if (ep->id == sdev->devfn) {
+ g_tree_foreach(domain->mappings, virtio_iommu_mapping_unmap,
+ &sdev->iommu_mr);
+ }
+ }
+
QLIST_REMOVE(ep, next);
ep->domain = NULL;
}
@@ -178,6 +216,7 @@ static VirtIOIOMMUEndpoint
*virtio_iommu_get_endpoint(VirtIOIOMMU *s,
}
ep = g_malloc0(sizeof(*ep));
ep->id = ep_id;
+ ep->viommu = s;
trace_virtio_iommu_get_endpoint(ep_id);
g_tree_insert(s->endpoints, GUINT_TO_POINTER(ep_id), ep);
return ep;
@@ -274,6 +313,7 @@ static int virtio_iommu_attach(VirtIOIOMMU *s,
uint32_t ep_id = le32_to_cpu(req->endpoint);
VirtIOIOMMUDomain *domain;
VirtIOIOMMUEndpoint *ep;
+ IOMMUDevice *sdev;
trace_virtio_iommu_attach(domain_id, ep_id);
@@ -299,6 +339,14 @@ static int virtio_iommu_attach(VirtIOIOMMU *s,
ep->domain = domain;
+ /* Replay domain mappings on the associated memory region */
+ QLIST_FOREACH(sdev, &s->notifiers_list, next) {
+ if (ep_id == sdev->devfn) {
+ g_tree_foreach(domain->mappings, virtio_iommu_mapping_map,
+ &sdev->iommu_mr);
+ }
+ }
+
return VIRTIO_IOMMU_S_OK;
}
@@ -872,6 +920,7 @@ static gboolean reconstruct_endpoints(gpointer key,
gpointer value,
QLIST_FOREACH(iter, &d->endpoint_list, next) {
iter->domain = d;
+ iter->viommu = s;
g_tree_insert(s->endpoints, GUINT_TO_POINTER(iter->id), iter);
}
return false; /* continue the domain traversal */
--
2.17.1
[PATCH v9 6/9] virtio-iommu: Call iommu notifier for attach/detach,
Bharat Bhushan <=
[PATCH v9 5/9] virtio-iommu: Add iommu notifier for map/unmap, Bharat Bhushan, 2020/03/23
[PATCH v9 7/9] virtio-iommu: add iommu replay, Bharat Bhushan, 2020/03/23
[PATCH v9 9/9] virtio-iommu: add iommu notifier memory-region, Bharat Bhushan, 2020/03/23
[PATCH v9 8/9] virtio-iommu: Implement probe request, Bharat Bhushan, 2020/03/23
Re: [PATCH v9 0/9] virtio-iommu: VFIO integration, no-reply, 2020/03/23
Re: [PATCH v9 0/9] virtio-iommu: VFIO integration, no-reply, 2020/03/23