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authorDavid Gibson <david@gibson.dropbear.id.au>2013-05-14 19:13:56 +1000
committerPaolo Bonzini <pbonzini@redhat.com>2013-06-20 16:32:47 +0200
commit068665757da047d7d2980c17bba0659eb0ea0a89 (patch)
treea796657fa689e04bd28489c05c5d99e0e1981ebd /memory.c
parent30951157441aed950ad8ca326500b4986d431c7a (diff)
memory: Add iommu map/unmap notifiers
This patch adds a NotifierList to MemoryRegions which represent IOMMUs allowing other parts of the code to register interest in mappings or unmappings from the IOMMU. All IOMMU implementations will need to call memory_region_notify_iommu() to inform those waiting on the notifier list, whenever an IOMMU mapping is made or removed. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'memory.c')
-rw-r--r--memory.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/memory.c b/memory.c
index 7eb8d461b9..2a94d7de2c 100644
--- a/memory.c
+++ b/memory.c
@@ -1072,6 +1072,7 @@ void memory_region_init_iommu(MemoryRegion *mr,
memory_region_init(mr, name, size);
mr->iommu_ops = ops,
mr->terminates = true; /* then re-forwards */
+ notifier_list_init(&mr->iommu_notify);
}
void memory_region_init_reservation(MemoryRegion *mr,
@@ -1124,6 +1125,23 @@ bool memory_region_is_iommu(MemoryRegion *mr)
return mr->iommu_ops;
}
+void memory_region_register_iommu_notifier(MemoryRegion *mr, Notifier *n)
+{
+ notifier_list_add(&mr->iommu_notify, n);
+}
+
+void memory_region_unregister_iommu_notifier(Notifier *n)
+{
+ notifier_remove(n);
+}
+
+void memory_region_notify_iommu(MemoryRegion *mr,
+ IOMMUTLBEntry entry)
+{
+ assert(memory_region_is_iommu(mr));
+ notifier_list_notify(&mr->iommu_notify, &entry);
+}
+
void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
{
uint8_t mask = 1 << client;