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/* $XConsortium: ativga.c,v 1.1 94/12/14 15:04:34 kaleb Exp $ */
/* $XFree86: xc/programs/Xserver/hw/xfree86/accel/mach64/ativga.c,v 3.0 1994/11/26 12:42:34 dawes Exp $ */
/***************************************************************************
* Start of VGA font saving and restoration code.
* Created: Sun Jun 27 12:50:09 1993 by faith@cs.unc.edu
*
* Reference used:
* "VGA WONDER Programmer's Reference,"
* ATI Technologies, 1991.
* Release 1.2 -- Reference #PRG28800
* (Part No. 10709B0412)
*
* Some code from xf86/vga256/drivers/ati/driver.c, which was written by:
* Thomas Roell (roell@informatik.tu-muenchen.de), Per Lindqvist
* (pgd@compuram.bbt.se), Doug Evans (dje@sspiff.UUCP), and Rik Faith
* (faith@cs.unc.edu).
*
* Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
* Copyright 1993 by Rickard E. Faith
* Copyright 1993,1994 by Kevin E. Martin, Chapel Hill, North Carolina.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of Thomas Roell not be used
* in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. Thomas Roell makes no
* representations about the suitability of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*
* THOMAS ROELL, PER LINDQVIST, DOUG EVANS, RICKARD E. FAITH AND KEVIN
* E. MARTIN DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THOMAS ROELL, PER LINDQVIST, DOUG EVANS, RICKARD E. FAITH
* OR KEVIN E. MARTIN BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
* THIS SOFTWARE.
*
* Modified for the Mach64 by Kevin E. Martin (martin@cs.unc.edu)
*/
#include "X.h"
#include "misc.h"
#include "input.h"
#include "dix.h"
#include "os.h"
#include "xf86.h"
#include "xf86_OSlib.h"
#include "vga.h"
#include "regmach64.h"
typedef struct {
vgaHWRec std;
unsigned char ATIExtRegBank[11]; /* ATI Registers B0,B1,B2,B3,
B5, B6,B8,B9, BE,A6,A7 */
} SaveBlock;
pointer vgaBase = NULL;
pointer vgaNewVideoState = NULL;
#define save ((SaveBlock *)vgaNewVideoState)
static short ATIExtReg = 0x1ce;
int vgaIOBase;
int vgaInterlaceType = VGA_DIVIDE_VERT;
/* Define dummy to keep vgaHW.c happy */
void (*vgaSaveScreenFunc)() = (void (*)())NoopDDA;
#define ER_B0 0 /* Extended Register indices (ATIExtRegBank) */
#define ER_B1 1
#define ER_B2 2
#define ER_B3 3
#define ER_B5 4
#define ER_B6 5
#define ER_B8 6
#define ER_B9 7
#define ER_BE 8
#define ER_A6 9
#define ER_A7 10
#define ATIReg0 ATIExtRegBank[ER_B0]
#define ATIReg1 ATIExtRegBank[ER_B1]
#define ATIReg2 ATIExtRegBank[ER_B2]
#define ATIReg3 ATIExtRegBank[ER_B3]
#define ATIReg5 ATIExtRegBank[ER_B5]
#define ATIReg6 ATIExtRegBank[ER_B6]
#define ATIReg8 ATIExtRegBank[ER_B8]
#define ATIReg9 ATIExtRegBank[ER_B9]
#define ATIRegE ATIExtRegBank[ER_BE]
#define ATIRegA6 ATIExtRegBank[ER_A6]
#define ATIRegA7 ATIExtRegBank[ER_A7]
static int inATI(index)
int index;
{
outb(ATIExtReg, index);
return inb(ATIExtReg + 1);
}
void mach64SaveVGAInfo(screen_idx)
int screen_idx;
{
unsigned char b2_save;
unsigned char b8_save;
if (!vgaBase) {
vgaBase = xf86MapVidMem(screen_idx, VGA_REGION, (pointer)0xa0000,
64 * 1024);
}
vgaIOBase = (inb(0x3cc) & 0x01) ? 0x3D0 : 0x3B0;
/* This part is copied from ATISave() in
* xf86/vga256/drivers/ati/driver.c
*/
/* Unlock ATI specials */
outb(ATIExtReg, (((b8_save = inATI(0xb8)) & 0xC0) << 8) | 0xb8);
b2_save = inATI(0xb2);
outb(ATIExtReg, 0x00b2); /* segment select 0 */
vgaNewVideoState = vgaHWSave(vgaNewVideoState, sizeof(SaveBlock));
save->ATIReg0 = inATI(0xb0);
save->ATIReg1 = inATI(0xb1);
save->ATIReg2 = b2_save;
save->ATIReg5 = inATI(0xb5);
save->ATIReg6 = inATI(0xb6);
save->ATIReg3 = inATI(0xb3);
save->ATIReg8 = b8_save;
save->ATIRegE = inATI(0xbe);
save->ATIReg9 = inATI(0xb9);
save->ATIRegA6 = inATI(0xa6);
save->ATIRegA7 = inATI(0xa7);
#if 0
/*
* TvR: don't know whether this is neccesary for mach64
* Should be removed if it isn't needed.
*/
/* Enable video */
inb(vgaIOBase + 0x0A); /* reset flip-flop */
outb( 0x3c0, 0x20 );
#endif
}
void mach64RestoreVGAInfo()
{
/* This routine is mostly from ATIRestore() in
* xf86/vga256/drivers/ati/driver.c
*/
/* Unlock ATI specials */
outw(ATIExtReg, ((inATI(0xb8) & 0xC0) << 8) | 0xb8);
/* Load ATI Extended registers */
outw(ATIExtReg, (save->ATIReg0 << 8) | 0xb0);
outw(ATIExtReg, (save->ATIReg1 << 8) | 0xb1);
outw(ATIExtReg, (save->ATIReg2 << 8) | 0xb2);
outw(ATIExtReg, (save->ATIReg3 << 8) | 0xb3);
outw(ATIExtReg, (save->ATIReg5 << 8) | 0xb5);
outw(ATIExtReg, (save->ATIReg6 << 8) | 0xb6);
outw(ATIExtReg, (save->ATIRegE << 8) | 0xbE);
outw(ATIExtReg, (save->ATIReg9 << 8) | 0xb9);
outw(ATIExtReg, (save->ATIRegA6 << 8) | 0xa6);
outw(ATIExtReg, (save->ATIRegA7 << 8) | 0xa7);
/*
* Last but not least ATIReg8 -- according to vgadoc's this lock the
* ATI special registers
*/
outw(ATIExtReg, (save->ATIReg8 << 8) | 0xb8);
/*
* Restore the generic vga registers
*/
vgaHWRestore((vgaHWPtr)save);
}
/*
* End of VGA font saving and restoration code.
*
***************************************************************************/
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