src/video/fbcon/3dfx_mmio.h
author Edgar Simo <bobbens@gmail.com>
Sun, 06 Jul 2008 17:06:37 +0000
branchgsoc2008_force_feedback
changeset 2498 ab567bd667bf
parent 1895 c121d94672cb
child 2859 99210400e8b9
permissions -rw-r--r--
Fixed various mistakes in the doxygen.
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2006 Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Lesser General Public
     7     License as published by the Free Software Foundation; either
     8     version 2.1 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Lesser General Public License for more details.
    14 
    15     You should have received a copy of the GNU Lesser General Public
    16     License along with this library; if not, write to the Free Software
    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 #include "SDL_config.h"
    23 
    24 /* 3Dfx register definitions */
    25 
    26 #include "3dfx_regs.h"
    27 
    28 /* 3Dfx control macros */
    29 
    30 #define tdfx_in8(reg)		*(volatile Uint8  *)(mapped_io + (reg))
    31 #define tdfx_in32(reg)		*(volatile Uint32 *)(mapped_io + (reg))
    32 
    33 #define tdfx_out8(reg,v)	*(volatile Uint8  *)(mapped_io + (reg)) = v;
    34 #define tdfx_out32(reg,v)	*(volatile Uint32 *)(mapped_io + (reg)) = v;
    35 
    36 
    37 /* Wait for fifo space */
    38 #define tdfx_wait(space)						\
    39 {									\
    40 	while ( (tdfx_in8(TDFX_STATUS) & 0x1F) < space )		\
    41 		;							\
    42 }
    43 
    44 
    45 /* Wait for idle accelerator */
    46 #define tdfx_waitidle()							\
    47 {									\
    48 	int i = 0;							\
    49 									\
    50 	tdfx_wait(1);							\
    51 	tdfx_out32(COMMAND_3D, COMMAND_3D_NOP);				\
    52 	do {								\
    53 		i = (tdfx_in32(TDFX_STATUS) & STATUS_BUSY) ? 0 : i + 1;	\
    54 	} while ( i != 3 );						\
    55 }
    56 /* vi: set ts=4 sw=4 expandtab: */