Changeset 89033 in vbox

Timestamp:

May 13, 2021 11:38:20 AM (4 years ago)

Author:

vboxsync

Message:

Intel IOMMU: bugref:9967 When translation is disabled, passthrough addresses.

File:

• trunk/src/VBox/Devices/Bus/DevIommuIntel.cpp (modified) (1 diff)

trunk/src/VBox/Devices/Bus/DevIommuIntel.cpp

@@ -1700 +1700 @@
     RT_NOREF6(idDevice, uIova, cbIova, fFlags, pGCPhysSpa, pcbContiguous);
 
-    PDMAR pThis = PDMDEVINS_2_DATA(pDevIns, PDMAR);
-    if (fFlags & PDMIOMMU_MEM_F_READ)
-        STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatMemRead));
-    else
-        STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatMemWrite));
-
-    return VERR_NOT_IMPLEMENTED;
+    PDMAR    pThis   = PDMDEVINS_2_DATA(pDevIns, PDMAR);
+    PCDMARCC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PCDMARCC);
+
+    DMAR_LOCK(pDevIns, pThisCC);
+    uint32_t const uGstsReg = dmarRegReadRaw32(pThis, VTD_MMIO_OFF_GSTS_REG);
+    DMAR_UNLOCK(pDevIns, pThisCC);
+
+    if (uGstsReg & VTD_BF_GSTS_REG_TES_MASK)
+    {
+        if (fFlags & PDMIOMMU_MEM_F_READ)
+            STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatMemRead));
+        else
+            STAM_COUNTER_INC(&pThis->CTX_SUFF_Z(StatMemWrite));
+
+        return VERR_NOT_IMPLEMENTED;
+    }
+
+    *pGCPhysSpa    = uIova;
+    *pcbContiguous = cbIova;
+    return VINF_SUCCESS;
 }