Changeset 70774 in vbox for trunk/src/VBox

Timestamp:

Jan 28, 2018 9:46:57 PM (7 years ago)

Author:

vboxsync

Message:

Devices/Serial: Allow attaching/detaching the driver below during runtime (forgotten file)

File:

• trunk/src/VBox/Devices/Serial/DevSerial.cpp (modified) (3 diffs)

trunk/src/VBox/Devices/Serial/DevSerial.cpp

@@ -1144 +1144 @@
 
 /**
+ * @interface_method_impl{PDMDEVREG,pfnAttach}
+ */
+static DECLCALLBACK(int) serialR3Attach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
+{
+    RT_NOREF(iLUN, fFlags);
+    PDEVSERIAL pThis = PDMINS_2_DATA(pDevIns, PDEVSERIAL);
+
+    int rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase, "Serial Char");
+    if (RT_SUCCESS(rc))
+    {
+        pThis->pDrvChar = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMICHARCONNECTOR);
+        if (!pThis->pDrvChar)
+        {
+            AssertLogRelMsgFailed(("Configuration error: instance %d has no char interface!\n", pDevIns->iInstance));
+            return VERR_PDM_MISSING_INTERFACE;
+        }
+    }
+    else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
+    {
+        pThis->pDrvBase = NULL;
+        pThis->pDrvChar = NULL;
+        rc = VINF_SUCCESS;
+        LogRel(("Serial%d: no unit\n", pDevIns->iInstance));
+    }
+    else /* Don't call VMSetError here as we assume that the driver already set an appropriate error */
+        LogRel(("Serial%d: Failed to attach to char driver. rc=%Rrc\n", pDevIns->iInstance, rc));
+
+   return rc;
+}
+
+
+/**
+ * @interface_method_impl{PDMDEVREG,pfnDetach}
+ */
+static DECLCALLBACK(void) serialR3Detach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
+{
+    RT_NOREF(iLUN, fFlags);
+    PDEVSERIAL pThis = PDMINS_2_DATA(pDevIns, PDEVSERIAL);
+
+    /* Zero out important members. */
+    pThis->pDrvBase = NULL;
+    pThis->pDrvChar = NULL;
+}
+
+
+/**
  * @interface_method_impl{PDMDEVREG,pfnDestruct}
  */
@@ -1362 +1408 @@
     /*
      * Attach the char driver and get the interfaces.
-     * For now no run-time changes are supported.
      */
     rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase, "Serial Char");
@@ -1433 +1478 @@
     NULL,
     /* pfnAttach */
-    NULL,
+    serialR3Attach,
     /* pfnDetach */
-    NULL,
+    serialR3Detach,
     /* pfnQueryInterface. */
     NULL,