annotate src/video/fbcon/matrox_mmio.h @ 4031:f0b8bbaf8de5 SDL-1.2

Fixed bug #453 That's silly, we included <asm/page.h> even though we know we have getpagesize()
author Sam Lantinga <slouken@libsdl.org>
date Tue, 10 Jul 2007 05:35:33 +0000
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children 782fd950bd46 a1b03ba2fcd0
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* MGA register definitions */
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25
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26 #include "matrox_regs.h"
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27
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28 /* MGA control macros */
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29
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30 #define mga_in8(reg) *(volatile Uint8 *)(mapped_io + (reg))
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31 #define mga_in32(reg) *(volatile Uint32 *)(mapped_io + (reg))
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32
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33 #define mga_out8(reg,v) *(volatile Uint8 *)(mapped_io + (reg)) = v;
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34 #define mga_out32(reg,v) *(volatile Uint32 *)(mapped_io + (reg)) = v;
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35
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36
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37 /* Wait for fifo space */
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38 #define mga_wait(space) \
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39 { \
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40 while ( mga_in8(MGAREG_FIFOSTATUS) < space ) \
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41 ; \
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42 }
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45 /* Wait for idle accelerator */
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46 #define mga_waitidle() \
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47 { \
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48 while ( mga_in32(MGAREG_STATUS) & 0x10000 ) \
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49 ; \
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50 }
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51