Changeset 53251 in vbox for trunk/src/VBox/Devices/EFI/Firmware/PcAtChipsetPkg

Timestamp:

Nov 6, 2014 11:10:15 AM (10 years ago)

Author:

vboxsync

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

96810

Message:

EFI: use rep ins/outs where appropriate

File:

• trunk/src/VBox/Devices/EFI/Firmware/PcAtChipsetPkg/PciHostBridgeDxe/PciRootBridgeIo.c (modified) (2 diffs)

trunk/src/VBox/Devices/EFI/Firmware/PcAtChipsetPkg/PciHostBridgeDxe/PciRootBridgeIo.c

@@ -995 +995 @@
   OutStride = mOutStride[Width];
   OperationWidth = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) (Width & 0x03);
+#ifdef VBOX
+  /* rep ins/outs is much faster than single port I/O */
+  if (Count > 1 && Width >= EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint32)
+  {
+    switch (Width)
+    {
+      case EfiPciWidthFifoUint8:
+        if (Write)
+          IoWriteBuffer8((UINTN)Address, Buffer, Count);
+        else
+          IoReadBuffer8((UINTN)Address, Buffer, Count);
+        break;
+      case EfiPciWidthFifoUint16:
+        if (Write)
+          IoWriteBuffer16((UINTN)Address, Buffer, Count);
+        else
+          IoReadBuffer16((UINTN)Address, Buffer, Count);
+        break;
+      case EfiPciWidthFifoUint32:
+        if (Write)
+          IoWriteBuffer32((UINTN)Address, Buffer, Count);
+        else
+          IoReadBuffer32((UINTN)Address, Buffer, Count);
+        break;
+      default:
+        ASSERT (FALSE);
+    }
+  } else {
+#endif
   for (Uint8Buffer = Buffer; Count > 0; Address += InStride, Uint8Buffer += OutStride, Count--) {
     if (Write) {
@@ -1036 +1065 @@
     }
   }
+#ifdef VBOX
+  }
+#endif
   return EFI_SUCCESS;
 }