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authorPeter Xu <peterx@redhat.com>2017-05-19 11:19:44 +0800
committerMichael S. Tsirkin <mst@redhat.com>2017-05-25 21:25:27 +0300
commit127ff5c356e1c2c1328ed2fbb582eb14e412b160 (patch)
tree9f707d679b63d70495c5cfc4db09a9f14bd286f1 /hw
parent8f7d7161dd78142e77b96d7035682451154ed0d2 (diff)
intel_iommu: provide vtd_ce_get_type()
Helper to fetch VT-d context entry type. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'hw')
-rw-r--r--hw/i386/intel_iommu.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index f06055f053..b4771430e0 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: