[sdl_omap.git] / src / video / fbcon / 3dfx_mmio.h

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 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 );						\
}
Commit	Line	Data
e14743d1	1	/*
	2	SDL - Simple DirectMedia Layer
	3	Copyright (C) 1997-2009 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