--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/fbcon/3dfx_mmio.h	Thu Apr 26 16:45:43 2001 +0000
@@ -0,0 +1,60 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the Free
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Sam Lantinga
+    slouken@devolution.com
+*/
+
+#ifdef SAVE_RCSID
+static char rcsid =
+ "@(#) $Id$";
+#endif
+
+/* 3Dfx register definitions */
+
+#include "3dfx_regs.h"
+
+/* 3Dfx control macros */
+
+#define tdfx_in8(reg)		*(volatile Uint8  *)(mapped_io + (reg))
+#define tdfx_in32(reg)		*(volatile Uint32 *)(mapped_io + (reg))
+
+#define tdfx_out8(reg,v)	*(volatile Uint8  *)(mapped_io + (reg)) = v;
+#define tdfx_out32(reg,v)	*(volatile Uint32 *)(mapped_io + (reg)) = v;
+
+
+/* Wait for fifo space */
+#define tdfx_wait(space)						\
+{									\
+	while ( (tdfx_in8(TDFX_STATUS) & 0x1F) < space )		\
+		;							\
+}
+
+
+/* Wait for idle accelerator */
+#define tdfx_waitidle()							\
+{									\
+	int i = 0;							\
+									\
+	tdfx_wait(1);							\
+	tdfx_out32(COMMAND_3D, COMMAND_3D_NOP);				\
+	do {								\
+		i = (tdfx_in32(TDFX_STATUS) & STATUS_BUSY) ? 0 : i + 1;	\
+	} while ( i != 3 );						\
+}
+