Per spec 6.5.2.4, PADID-selective PASID-based iotlb invalidation will
flush stage-2 iotlb entries with matching domain id and pasid.
With scalable modern mode introduced, guest could send PASID-selective
PASID-based iotlb invalidation to flush both stage-1 and stage-2 entries.
By this chance, remove old IOTLB related definition.
Signed-off-by: Zhenzhong Duan <zhenzhong.d...@intel.com>
---
hw/i386/intel_iommu_internal.h | 14 +++---
hw/i386/intel_iommu.c | 81 ++++++++++++++++++++++++++++++++++
2 files changed, 90 insertions(+), 5 deletions(-)
diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
index 8fa27c7f3b..19e4ed52ca 100644
--- a/hw/i386/intel_iommu_internal.h
+++ b/hw/i386/intel_iommu_internal.h
@@ -402,11 +402,6 @@ typedef union VTDInvDesc VTDInvDesc;
#define VTD_INV_DESC_IOTLB_AM(val) ((val) & 0x3fULL)
#define VTD_INV_DESC_IOTLB_RSVD_LO 0xffffffff0000ff00ULL
#define VTD_INV_DESC_IOTLB_RSVD_HI 0xf80ULL
-#define VTD_INV_DESC_IOTLB_PASID_PASID (2ULL << 4)
-#define VTD_INV_DESC_IOTLB_PASID_PAGE (3ULL << 4)
-#define VTD_INV_DESC_IOTLB_PASID(val) (((val) >> 32) & VTD_PASID_ID_MASK)
-#define VTD_INV_DESC_IOTLB_PASID_RSVD_LO 0xfff00000000001c0ULL
-#define VTD_INV_DESC_IOTLB_PASID_RSVD_HI 0xf80ULL
/* Mask for Device IOTLB Invalidate Descriptor */
#define VTD_INV_DESC_DEVICE_IOTLB_ADDR(val) ((val) & 0xfffffffffffff000ULL)
@@ -438,6 +433,15 @@ typedef union VTDInvDesc VTDInvDesc;
(0x3ffff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM | VTD_SL_TM)) : \
(0x3ffff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
+/* Masks for PIOTLB Invalidate Descriptor */
+#define VTD_INV_DESC_PIOTLB_G (3ULL << 4)
+#define VTD_INV_DESC_PIOTLB_ALL_IN_PASID (2ULL << 4)
+#define VTD_INV_DESC_PIOTLB_PSI_IN_PASID (3ULL << 4)
+#define VTD_INV_DESC_PIOTLB_DID(val) (((val) >> 16) & VTD_DOMAIN_ID_MASK)
+#define VTD_INV_DESC_PIOTLB_PASID(val) (((val) >> 32) & 0xfffffULL)
+#define VTD_INV_DESC_PIOTLB_RSVD_VAL0 0xfff000000000f1c0ULL
+#define VTD_INV_DESC_PIOTLB_RSVD_VAL1 0xf80ULL
+
/* Information about page-selective IOTLB invalidate */
struct VTDIOTLBPageInvInfo {
uint16_t domain_id;
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index c1382a5651..df591419b7 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -2656,6 +2656,83 @@ static bool vtd_process_iotlb_desc(IntelIOMMUState *s,
VTDInvDesc *inv_desc)
return true;
}
+static gboolean vtd_hash_remove_by_pasid(gpointer key, gpointer value,
+ gpointer user_data)
+{
+ VTDIOTLBEntry *entry = (VTDIOTLBEntry *)value;
+ VTDIOTLBPageInvInfo *info = (VTDIOTLBPageInvInfo *)user_data;
+
+ return ((entry->domain_id == info->domain_id) &&
+ (entry->pasid == info->pasid));
+}
+
+static void vtd_piotlb_pasid_invalidate(IntelIOMMUState *s,
+ uint16_t domain_id, uint32_t pasid)
+{
+ VTDIOTLBPageInvInfo info;
+ VTDAddressSpace *vtd_as;
+ VTDContextEntry ce;
+
+ info.domain_id = domain_id;
+ info.pasid = pasid;
+
+ vtd_iommu_lock(s);
+ g_hash_table_foreach_remove(s->iotlb, vtd_hash_remove_by_pasid,
+ &info);
+ vtd_iommu_unlock(s);
+
+ QLIST_FOREACH(vtd_as, &s->vtd_as_with_notifiers, next) {
+ if (!vtd_dev_to_context_entry(s, pci_bus_num(vtd_as->bus),
+ vtd_as->devfn, &ce) &&
+ domain_id == vtd_get_domain_id(s, &ce, vtd_as->pasid)) {
+ uint32_t rid2pasid = VTD_CE_GET_RID2PASID(&ce);
+
+ if ((vtd_as->pasid != PCI_NO_PASID || pasid != rid2pasid) &&
+ vtd_as->pasid != pasid) {
+ continue;
+ }
+
+ if (!s->scalable_modern) {
+ vtd_address_space_sync(vtd_as);
+ }
+ }
+ }
+}
+
+static bool vtd_process_piotlb_desc(IntelIOMMUState *s,
+ VTDInvDesc *inv_desc)
+{
+ uint16_t domain_id;
+ uint32_t pasid;
+
+ if ((inv_desc->val[0] & VTD_INV_DESC_PIOTLB_RSVD_VAL0) ||
+ (inv_desc->val[1] & VTD_INV_DESC_PIOTLB_RSVD_VAL1)) {
+ error_report_once("%s: invalid piotlb inv desc hi=0x%"PRIx64
+ " lo=0x%"PRIx64" (reserved bits unzero)",
+ __func__, inv_desc->val[1], inv_desc->val[0]);
+ return false;
+ }
+
+ domain_id = VTD_INV_DESC_PIOTLB_DID(inv_desc->val[0]);
+ pasid = VTD_INV_DESC_PIOTLB_PASID(inv_desc->val[0]);
+ switch (inv_desc->val[0] & VTD_INV_DESC_PIOTLB_G) {
+ case VTD_INV_DESC_PIOTLB_ALL_IN_PASID:
+ vtd_piotlb_pasid_invalidate(s, domain_id, pasid);
+ break;
+
+ case VTD_INV_DESC_PIOTLB_PSI_IN_PASID:
+ break;
+
+ default:
+ error_report_once("%s: invalid piotlb inv desc: hi=0x%"PRIx64
+ ", lo=0x%"PRIx64" (type mismatch: 0x%llx)",
+ __func__, inv_desc->val[1], inv_desc->val[0],
+ inv_desc->val[0] & VTD_INV_DESC_IOTLB_G);
+ return false;
+ }
+ return true;
+}
+
static bool vtd_process_inv_iec_desc(IntelIOMMUState *s,
VTDInvDesc *inv_desc)
{
@@ -2775,6 +2852,10 @@ static bool vtd_process_inv_desc(IntelIOMMUState *s)
break;
case VTD_INV_DESC_PIOTLB:
+ trace_vtd_inv_desc("p-iotlb", inv_desc.val[1], inv_desc.val[0]);
+ if (!vtd_process_piotlb_desc(s, &inv_desc)) {
+ return false;
+ }
break;
case VTD_INV_DESC_WAIT:
--
2.34.1
