diff mbox

[v3,07/12] intel_iommu: provide vtd_ce_get_type()

Message ID 1494403315-12760-8-git-send-email-peterx@redhat.com
State New
Headers show

Commit Message

Peter Xu May 10, 2017, 8:01 a.m. UTC 
Helper to fetch VT-d context entry type.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 hw/i386/intel_iommu.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 4628f04..c8751ba 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -595,6 +595,11 @@  static inline uint32_t vtd_ce_get_agaw(VTDContextEntry *ce)
     return 30 + (ce->hi & VTD_CONTEXT_ENTRY_AW) * 9;
 }
 
+static inline uint32_t vtd_ce_get_type(VTDContextEntry *ce)
+{
+    return ce->lo & VTD_CONTEXT_ENTRY_TT;
+}
+
 static inline uint64_t vtd_iova_limit(VTDContextEntry *ce)
 {
     uint32_t ce_agaw = vtd_ce_get_agaw(ce);
@@ -865,7 +870,7 @@  static int vtd_dev_to_context_entry(IntelIOMMUState *s, uint8_t bus_num,
         trace_vtd_ce_invalid(ce->hi, ce->lo);
         return -VTD_FR_CONTEXT_ENTRY_INV;
     } else {
-        switch (ce->lo & VTD_CONTEXT_ENTRY_TT) {
+        switch (vtd_ce_get_type(ce)) {
         case VTD_CONTEXT_TT_MULTI_LEVEL:
             /* fall through */
         case VTD_CONTEXT_TT_DEV_IOTLB: