1 files changed, 79 insertions, 0 deletions
diff --git a/private/ntos/fw/ppc/ioaccess.h b/private/ntos/fw/ppc/ioaccess.h
new file mode 100644
index 000000000..e6db7c06b
--- /dev/null
+++ b/private/ntos/fw/ppc/ioaccess.h
@@ -0,0 +1,79 @@
+/*++
+
+Copyright (c) 1990  Microsoft Corporation
+
+Module Name:
+
+    ioaccess.h
+
+Abstract:
+
+    This file contains the definitions to read and write IO registers.
+
+Author:
+
+    Lluis Abello (lluis) 1-May-91
+
+Environment:
+
+    Kernel mode
+
+Revision History:
+
+--*/
+
+#ifndef _IOACCESS
+#define _IOACCESS
+//
+// I/O space read and write macros.
+//
+#ifdef R4000
+#undef READ_REGISTER_UCHAR
+#undef READ_REGISTER_USHORT
+#undef READ_REGISTER_ULONG
+#undef WRITE_REGISTER_UCHAR
+#undef WRITE_REGISTER_USHORT
+#undef WRITE_REGISTER_ULONG
+//    #define READ_REGISTER_UCHAR(x)  NtReadByte(x)
+//    #define READ_REGISTER_USHORT(x) NtReadShort(x)
+//    #define READ_REGISTER_ULONG(x)  NtReadLong(x)
+//    #define WRITE_REGISTER_UCHAR(x, y)  NtFlushByteBuffer(x,y)
+//    #define WRITE_REGISTER_USHORT(x, y) NtFlushShortBuffer(x,y)
+//    #define WRITE_REGISTER_ULONG(x, y) NtFlushLongBuffer(x,y)
+#define READ_REGISTER_UCHAR(x)   *(volatile UCHAR * const)(x)
+#define READ_REGISTER_USHORT(x)  *(volatile USHORT * const)(x)
+#define READ_REGISTER_ULONG(x)   *(volatile ULONG * const)(x)
+
+#define WRITE_REGISTER_UCHAR(x, y)  *(volatile UCHAR * const)(x) = y
+#define WRITE_REGISTER_USHORT(x, y) *(volatile USHORT * const)(x) = y
+#define WRITE_REGISTER_ULONG(x, y)  *(volatile ULONG * const)(x) = y
+
+#endif //R4000
+
+#ifdef R3000
+#undef READ_REGISTER_UCHAR
+#undef READ_REGISTER_USHORT
+#undef READ_REGISTER_ULONG
+#undef WRITE_REGISTER_UCHAR
+#undef WRITE_REGISTER_USHORT
+#undef WRITE_REGISTER_ULONG
+
+#define READ_REGISTER_UCHAR(x) \
+    *(volatile UCHAR * const)(x)
+
+#define READ_REGISTER_USHORT(x) \
+    *(volatile USHORT * const)(x)
+
+#define READ_REGISTER_ULONG(x) \
+    *(volatile ULONG * const)(x)
+
+#define WRITE_REGISTER_UCHAR(x, y) \
+    *(volatile UCHAR * const)(x) = y; FlushWriteBuffer()
+
+#define WRITE_REGISTER_USHORT(x, y) \
+    *(volatile USHORT * const)(x) = y; FlushWriteBuffer()
+
+#define WRITE_REGISTER_ULONG(x, y) \
+    *(volatile ULONG * const)(x) = y; FlushWriteBuffer()
+#endif //R3000
+#endif //_IOACCESS