Changeset 104191 in vbox

Timestamp:

Apr 5, 2024 1:35:18 PM (8 months ago)

Author:

vboxsync

Message:

DevBusLogic: Enforce DWORD aligned MMIO, return 'unused' for unimplemented registers.

File:

• trunk/src/VBox/Devices/Storage/DevBusLogic.cpp (modified) (2 diffs)

trunk/src/VBox/Devices/Storage/DevBusLogic.cpp

@@ -2846 +2846 @@
     /* the linux driver does not make use of the MMIO area. */
     ASSERT_GUEST_MSG_FAILED(("MMIO Read: %RGp LB %u\n", off, cb));
-    return VINF_SUCCESS;
+    return VINF_IOM_MMIO_UNUSED_FF;
 }
 
@@ -4346 +4346 @@
         rc = PDMDevHlpPCIIORegionCreateMmio(pDevIns, 1 /*iPciRegion*/, 32 /*cbRegion*/, PCI_ADDRESS_SPACE_MEM,
                                             buslogicMMIOWrite, buslogicMMIORead, NULL /*pvUser*/,
-                                            IOMMMIO_FLAGS_READ_PASSTHRU | IOMMMIO_FLAGS_WRITE_PASSTHRU,
+                                            IOMMMIO_FLAGS_READ_DWORD | IOMMMIO_FLAGS_WRITE_DWORD_ZEROED,
                                             "BusLogic MMIO", &pThis->hMmio);
         AssertRCReturn(rc, rc);