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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>
This commit is contained in:
Bharat Bhushan 2020-10-30 19:05:04 +01:00 committed by Michael S. Tsirkin
parent 15e4c8f01b
commit 2f6eeb5f0b
1 changed files with 32 additions and 0 deletions
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32
hw/virtio/virtio-iommu.c
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@ -170,11 +170,39 @@ static void virtio_iommu_notify_unmap(IOMMUMemoryRegion *mr, hwaddr virt_start,
memory_region_notify_iommu(mr, 0, entry);
}
static gboolean virtio_iommu_notify_unmap_cb(gpointer key, gpointer value,
gpointer data)
{
VirtIOIOMMUInterval *interval = (VirtIOIOMMUInterval *) key;
IOMMUMemoryRegion *mr = (IOMMUMemoryRegion *) data;
virtio_iommu_notify_unmap(mr, interval->low, interval->high);
return false;
}
static gboolean virtio_iommu_notify_map_cb(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, interval->high,
mapping->phys_addr, mapping->flags);
return false;
}
static void virtio_iommu_detach_endpoint_from_domain(VirtIOIOMMUEndpoint *ep)
{
VirtIOIOMMUDomain *domain = ep->domain;
if (!ep->domain) {
return;
}
g_tree_foreach(domain->mappings, virtio_iommu_notify_unmap_cb,
ep->iommu_mr);
QLIST_REMOVE(ep, next);
ep->domain = NULL;
}
@ -317,6 +345,10 @@ static int virtio_iommu_attach(VirtIOIOMMU *s,
ep->domain = domain;
/* Replay domain mappings on the associated memory region */
g_tree_foreach(domain->mappings, virtio_iommu_notify_map_cb,
ep->iommu_mr);
return VIRTIO_IOMMU_S_OK;
}