1/* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 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/* MGA register definitions */ 25 26#include "matrox_regs.h" 27 28/* MGA control macros */ 29 30#define mga_in8(reg) *(volatile Uint8 *)(mapped_io + (reg)) 31#define mga_in32(reg) *(volatile Uint32 *)(mapped_io + (reg)) 32 33#define mga_out8(reg,v) *(volatile Uint8 *)(mapped_io + (reg)) = v; 34#define mga_out32(reg,v) *(volatile Uint32 *)(mapped_io + (reg)) = v; 35 36 37/* Wait for fifo space */ 38#define mga_wait(space) \ 39{ \ 40 while ( mga_in8(MGAREG_FIFOSTATUS) < space ) \ 41 ; \ 42} 43 44 45/* Wait for idle accelerator */ 46#define mga_waitidle() \ 47{ \ 48 while ( mga_in32(MGAREG_STATUS) & 0x10000 ) \ 49 ; \ 50} 51 52