[RFC PATCH 12/20] Memory: Add func to fire pasidt_bind notifier

Liu, Yi L
2017-04-26T10:24:25Z

Add a separate function to fire pasid table bind notifier. In future
there may be more pasid bind type with different granularity. e.g.
binding pasid entry instead of binding pasid table. It can be supported
by adding bind_type, check bind_type in fire func and trigger correct
notifier.

Signed-off-by: Liu, Yi L <yi.l.liu@linux.intel.com>
---
include/exec/memory.h | 11 +++++++++++
memory.c | 21 +++++++++++++++++++++
2 files changed, 32 insertions(+)

diff --git a/include/exec/memory.h b/include/exec/memory.h
index 49087ef..3b8f487 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -695,6 +695,17 @@ uint64_t memory_region_iommu_get_min_page_size(MemoryRegion *mr);
void memory_region_notify_iommu(MemoryRegion *mr,
IOMMUTLBEntry entry);

+/*
+ * memory_region_notify_iommu_svm_bind notify SVM bind
+ * request from vIOMMU emulator.
+ *
+ * @mr: the memory region of IOMMU
+ * @data: IOMMU SVM data
+ */
+void memory_region_notify_iommu_svm_bind(MemoryRegion *mr,
+ void *data);
+
+
/**
* memory_region_notify_one: notify a change in an IOMMU translation
* entry to a single notifier
diff --git a/memory.c b/memory.c
index 45ef069..ce0b0ff 100644
--- a/memory.c
+++ b/memory.c
@@ -1729,6 +1729,27 @@ void memory_region_notify_iommu(MemoryRegion *mr,
}
}

+void memory_region_notify_iommu_svm_bind(MemoryRegion *mr,
+ void *data)
+{
+ IOMMUNotifier *iommu_notifier;
+ IOMMUNotifierFlag request_flags;
+
+ assert(memory_region_is_iommu(mr));
+
+ /*TODO: support other bind requests with smaller gran,
+ * e.g. bind signle pasid entry
+ */
+ request_flags = IOMMU_NOTIFIER_SVM_PASIDT_BIND;
+
+ QLIST_FOREACH(iommu_notifier, &mr->iommu_notify, node) {
+ if (iommu_notifier->notifier_flags & request_flags) {
+ iommu_notifier->notify(iommu_notifier, data);
+ break;
+ }
+ }
+}
+
void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
{
uint8_t mask = 1 << client;
--
1.9.1