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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>
This commit is contained in:
Peter Xu 2017-05-19 11:19:44 +08:00 committed by Michael S. Tsirkin
parent 8f7d7161dd
commit 127ff5c356
1 changed files with 6 additions and 1 deletions
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7
hw/i386/intel_iommu.c
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@ -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: