Mercurial > sdl-ios-xcode
view src/video/fbcon/3dfx_mmio.h @ 1483:52a61c7b323b
*** empty log message ***
author | Sam Lantinga <slouken@libsdl.org> |
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date | Wed, 08 Mar 2006 06:21:04 +0000 |
parents | d910939febfa |
children | 782fd950bd46 a1b03ba2fcd0 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" /* 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 ); \ }