Changeset 85904 in vbox

Timestamp:

Aug 27, 2020 1:19:54 PM (5 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

140088

Message:

AMD IOMMU: bugref:9654 Initialize the IOMMU's MMIO region via the PCI config. space IOMMU base address register.

File:

• trunk/src/VBox/Devices/Bus/DevPciIch9.cpp (modified) (1 diff)

trunk/src/VBox/Devices/Bus/DevPciIch9.cpp

@@ -2245 +2245 @@
                 break;
             }
+#ifdef VBOX_WITH_IOMMU_AMD
+            case 0x0806:
+            {
+                /* IOMMU. */
+                uint16_t const uVendorId = devpciR3GetWord(pPciDev, VBOX_PCI_VENDOR_ID);
+                if (uVendorId == 0x1022 /* IOMMU_PCI_VENDOR_ID => AMD. */)
+                {
+                    /* AMD. */
+                    devpciR3SetDWord(pDevIns, pPciDev, 0x44, 0xfeb80001); /* set MMIO region address + enable (bit 0). */
+                }
+                break;
+            }
+#endif
             default:
                 break;