Changeset 70614 in vbox

Timestamp:

Jan 17, 2018 7:39:40 PM (7 years ago)

Author:

vboxsync

Message:

bugref:8256 Allow guest parallel device to be assigned base address 0x3BC w/o generating address space conflict.

File:

• trunk/src/VBox/Devices/Parallel/DevParallel.cpp (modified) (4 diffs)

trunk/src/VBox/Devices/Parallel/DevParallel.cpp

@@ -718 +718 @@
                                 N_("Configuration error: Failed to get the \"IOBase\" value"));
 
+    int port_count = (pThis->IOBase == 0x3BC) ? 4 : 8;
     /*
      * Register the I/O ports and saved state.
      */
-    rc = PDMDevHlpIOPortRegister(pDevIns, pThis->IOBase, 8, 0,
+    rc = PDMDevHlpIOPortRegister(pDevIns, pThis->IOBase, port_count, 0,
                                  parallelIOPortWrite, parallelIOPortRead,
                                  NULL, NULL, "Parallel");
@@ -738 +739 @@
     if (pThis->fGCEnabled)
     {
-        rc = PDMDevHlpIOPortRegisterRC(pDevIns, pThis->IOBase, 8, 0, "parallelIOPortWrite",
+        rc = PDMDevHlpIOPortRegisterRC(pDevIns, pThis->IOBase, port_count, 0, "parallelIOPortWrite",
                                        "parallelIOPortRead", NULL, NULL, "Parallel");
         if (RT_FAILURE(rc))
@@ -744 +745 @@
 
 #if 0
-        rc = PDMDevHlpIOPortRegisterGC(pDevIns, io_base+0x400, 8, 0, "parallelIOPortWriteECP",
+        rc = PDMDevHlpIOPortRegisterGC(pDevIns, io_base+0x400, port_count, 0, "parallelIOPortWriteECP",
                                        "parallelIOPortReadECP", NULL, NULL, "Parallel Ecp");
         if (RT_FAILURE(rc))
@@ -753 +754 @@
     if (pThis->fR0Enabled)
     {
-        rc = PDMDevHlpIOPortRegisterR0(pDevIns, pThis->IOBase, 8, 0, "parallelIOPortWrite",
+        rc = PDMDevHlpIOPortRegisterR0(pDevIns, pThis->IOBase, port_count, 0, "parallelIOPortWrite",
                                        "parallelIOPortRead", NULL, NULL, "Parallel");
         if (RT_FAILURE(rc))