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windows-nt/Source/XPSP1/NT/drivers/video/matrox/mga/mini/mvtovid.c

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2020-09-26 03:20:57 -05:00
/*/****************************************************************************
* name: MoveToVideoBuffer
*
* description: This function will move from the NPI structures the required
* information for MGAVidInit.
*
* designed: Bart Simpson. february 17, 1993
* last modified: $Author: bleblanc $, $Date: 94/05/26 09:39:51 $
*
* version: $Id: MVTOVID.C 1.16 94/05/26 09:39:51 bleblanc Exp $
*
* parameters: BYTE* VidTab, BYTE* CrtcTab, BYTE* VideoBuffer
* modifies: VideoBuffer content
* calls: -
* returns: -
******************************************************************************/
#include "switches.h"
#include "g3dstd.h"
#include "bind.h"
#include "defbind.h"
#ifndef __DDK_SRC__
#include "sxci.h"
#endif
#include "def.h"
#ifdef WINDOWS_NT
#if defined(ALLOC_PRAGMA)
#ifdef NO_FLOAT
VOID MoveToVideoBuffer(BYTE* pVidTab, BYTE* pCrtcTab, BYTE* pVideoBuffer);
#else
VOID MoveToVideoBuffer(BYTE* pVidTab, BYTE* pCrtcTab, BYTE* pVideoBuffer);
#endif
#pragma alloc_text(PAGE,MoveToVideoBuffer)
#endif
//#if defined(ALLOC_PRAGMA)
// #pragma data_seg("PAGE")
//#endif
#endif /* #ifdef WINDOWS_NT */
#ifdef OS2
#define _Far far
#endif
#ifdef NO_FLOAT
VOID MoveToVideoBuffer(BYTE* pVidTab, BYTE* pCrtcTab, BYTE* pVideoBuffer)
{
/*** Values of PCLK for the RAMDAC ***/
typedef struct
{
word FbPitch;
long Pclk_I;
long Pclk_NI;
} Pclk;
Pclk Pclk_Ramdac[] = {
640, 1227, 3150,
768, 1475, 4500,
800, 3300 , 5000,
1024, 4500 , 7500,
1152, 6200 , 10600,
1280, 8000 , 13500,
1600, 0 , 20000, {(word) -1}
};
extern volatile byte _Far *pMgaBaseAddr;
extern HwData Hw[NB_BOARD_MAX+1];
extern byte iBoard;
Pclk *p1;
long Sclk;
dword Srate;
byte LaserScl;
/*** Move parameters from VidTab in the VideoBuffer ***/
/* [dlee] Don't use magic numbers to index into Vid structure! When building
32-bit executables, the elements of the Vid structure are dword aligned,
not byte aligned!!! */
#ifdef WINDOWS_NT
*((BYTE*)(pVideoBuffer + VIDEOBUF_ALW)) = (BYTE)((vid *)pVidTab)[18].valeur;
*((BYTE*)(pVideoBuffer + VIDEOBUF_Interlace)) = (BYTE)((vid *)pVidTab)[13].valeur;
*((DWORD*)(pVideoBuffer + VIDEOBUF_PCLK)) = (DWORD)((vid *)pVidTab)[0].valeur;
*((WORD*)(pVideoBuffer + VIDEOBUF_DBWinXOffset)) = (WORD)((vid *)pVidTab)[3].valeur;
/* In interlace mode, we must double the Vertical back porch */
*((WORD*)(pVideoBuffer + VIDEOBUF_DBWinYOffset)) =
(WORD)((vid *)pVidTab)[13].valeur ?
(WORD)((vid *)pVidTab)[8].valeur * 2 : /* Interlace */
(WORD)((vid *)pVidTab)[8].valeur;
/*** Set some new parameters in the VideoBuffer ***/
*((BYTE*)(pVideoBuffer + VIDEOBUF_VideoDelay)) = *((BYTE*)(pCrtcTab + (31 * LONG_S)));
*((BYTE*)(pVideoBuffer + VIDEOBUF_VsyncPol)) = (BYTE)((vid *)pVidTab)[28].valeur;
*((BYTE*)(pVideoBuffer + VIDEOBUF_HsyncPol)) = (BYTE)((vid *)pVidTab)[27].valeur;
*((BYTE*)(pVideoBuffer + VIDEOBUF_HsyncDelay)) = *((BYTE*)(pCrtcTab + (33 * LONG_S)));
*((BYTE*)(pVideoBuffer + VIDEOBUF_Pedestal)) &= 0x80; /**** FORCE !#@$!@#$!@#$ ***/
#else
*((BYTE*)(pVideoBuffer + VIDEOBUF_ALW)) = *((BYTE*)(pVidTab + (18*(26+LONG_S)) + 26));
*((BYTE*)(pVideoBuffer + VIDEOBUF_Interlace)) = *((BYTE*)(pVidTab + (13*(26+LONG_S)) + 26));
*((DWORD*)(pVideoBuffer + VIDEOBUF_PCLK)) = *((DWORD*)(pVidTab + (0*(26+LONG_S)) + 26));
*((WORD*)(pVideoBuffer + VIDEOBUF_DBWinXOffset)) = *((WORD*)(pVidTab + (3*(26+LONG_S)) + 26));
/* In interlace mode, we must double the Vertical back porch */
*((WORD*)(pVideoBuffer + VIDEOBUF_DBWinYOffset)) =
*((WORD*)(pVidTab + (13*(26+LONG_S)) + 26)) ?
*((WORD*)(pVidTab + (8*(26+LONG_S)) + 26)) * 2 : /* Interlace */
*((WORD*)(pVidTab + (8*(26+LONG_S)) + 26)) ;
/*** Set some new parameters in the VideoBuffer ***/
*((BYTE*)(pVideoBuffer + VIDEOBUF_VideoDelay)) = *((BYTE*)(pCrtcTab + (31 * LONG_S)));
*((BYTE*)(pVideoBuffer + VIDEOBUF_VsyncPol)) = *((BYTE*)(pVidTab + (28*(26+LONG_S)) + 26));
*((BYTE*)(pVideoBuffer + VIDEOBUF_HsyncPol)) = *((BYTE*)(pVidTab + (27*(26+LONG_S)) + 26));
*((BYTE*)(pVideoBuffer + VIDEOBUF_HsyncDelay)) = *((BYTE*)(pCrtcTab + (33 * LONG_S)));
*((BYTE*)(pVideoBuffer + VIDEOBUF_Pedestal)) &= 0x80; /**** FORCE !#@$!@#$!@#$ ***/
#endif /* #ifdef WINDOWS_NT */
*((DWORD*)(pVideoBuffer + VIDEOBUF_OvsColor)) = 0x0000; /**** FORCE !#@$!@#$!@#$ ***/
/*** srate and laserscl need to be set according to PCLK ***/
/*******************************************************************/
/*** PIXEL CLOCK : Programmation of registers SRATE and LASERSCL ***/
/*** N.B. Values of SCLK and SPLCLK are in MHz ***/
/* Find PCLK value in table Pclk_Ramdac[] */
for (p1 = Pclk_Ramdac; p1->FbPitch != (word)-1; p1++)
{
if (p1->FbPitch == Hw[iBoard].pCurrentDisplayMode->FbPitch)
{
if (Hw[iBoard].pCurrentDisplayMode->DispType & 0x1) /* if interlace */
{
switch (Hw[iBoard].DacType)
{
case BT482:
Sclk = p1->Pclk_I*(Hw[iBoard].pCurrentDisplayMode->PixWidth/8);
break;
case BT485:
case PX2085:
case VIEWPOINT:
case TVP3026:
Sclk = p1->Pclk_I/(32/Hw[iBoard].pCurrentDisplayMode->PixWidth);
break;
}
}
else
{
switch (Hw[iBoard].DacType)
{
case BT482:
Sclk = p1->Pclk_NI*(Hw[iBoard].pCurrentDisplayMode->PixWidth/8);
break;
case BT485:
case PX2085:
case VIEWPOINT:
case TVP3026:
Sclk = p1->Pclk_NI/(32/Hw[iBoard].pCurrentDisplayMode->PixWidth);
break;
}
}
break;
}
}
/*** MOUSE ***/
if (Hw[iBoard].PortCfg == MOUSE_PORT)
Srate = (dword)((Sclk*100)/16384); /* Srate = SCLK / (200*32*256) */
/*** LASER ***/
else
{
if (Sclk < 2200)
Srate = 0;
else if (Sclk >= 2200 && Sclk < 4400)
Srate = 1;
else if (Sclk >= 4400 && Sclk < 8800)
Srate = 3;
else if (Sclk >= 8800 && Sclk < 17600)
Srate = 7;
else
Srate = 9;
if ((Sclk/(Srate+1)) < 1400)
LaserScl = 0;
else if ((Sclk/(Srate+1)) >= 1400 && (Sclk/(Srate+1)) < 1750)
LaserScl = 1;
else if ((Sclk/(Srate+1)) >= 1750)
LaserScl = 2;
}
*((BYTE*)(pVideoBuffer + VIDEOBUF_Srate)) = (byte)Srate;
if (Hw[iBoard].PortCfg != MOUSE_PORT)
*((BYTE*)(pVideoBuffer + VIDEOBUF_LaserScl)) = LaserScl;
/*** move the CTRC parameters in the VideoBuffer ***/
{ WORD i;
for (i = 0; i <= 28; i++)
{
*((BYTE*)(pVideoBuffer + VIDEOBUF_CRTC + i)) = *((BYTE*)(pCrtcTab + (i * LONG_S)));
}
}
}
/**************************************************************************/
#else
VOID MoveToVideoBuffer(BYTE* pVidTab, BYTE* pCrtcTab, BYTE* pVideoBuffer)
{
/*** Values of PCLK for the RAMDAC ***/
typedef struct
{
word FbPitch;
float Pclk_I;
float Pclk_NI;
} Pclk;
Pclk Pclk_Ramdac[] = {
640, 12.27, 31.5,
768, 14.75, 45.0,
800, 33.0 , 50.0,
1024, 45.0 , 75.0,
1152, 62.0 , 106.0,
1280, 80.0 , 135.0,
1600, 0 , 200.0, {-1}
};
extern volatile byte _Far *pMgaBaseAddr;
extern HwData Hw[NB_BOARD_MAX+1];
extern byte iBoard;
Pclk *p1;
float Sclk;
dword Srate;
byte LaserScl;
/*** Move parameters from VidTab in the VideoBuffer ***/
*((BYTE*)(pVideoBuffer + VIDEOBUF_ALW)) = *((BYTE*)(pVidTab + (18*(26+LONG_S)) + 26));
*((BYTE*)(pVideoBuffer + VIDEOBUF_Interlace)) = *((BYTE*)(pVidTab + (13*(26+LONG_S)) + 26));
*((DWORD*)(pVideoBuffer + VIDEOBUF_PCLK)) = *((DWORD*)(pVidTab + (0*(26+LONG_S)) + 26));
*((WORD*)(pVideoBuffer + VIDEOBUF_DBWinXOffset)) = *((WORD*)(pVidTab + (3*(26+LONG_S)) + 26));
/* In interlace mode, we must double the Vertical back porch */
*((WORD*)(pVideoBuffer + VIDEOBUF_DBWinYOffset)) =
*((WORD*)(pVidTab + (13*(26+LONG_S)) + 26)) ?
*((WORD*)(pVidTab + (8*(26+LONG_S)) + 26)) * 2 : /* Interlace */
*((WORD*)(pVidTab + (8*(26+LONG_S)) + 26)) ;
/*** Set some new parameters in the VideoBuffer ***/
*((BYTE*)(pVideoBuffer + VIDEOBUF_VideoDelay)) = *((BYTE*)(pCrtcTab + (31 * LONG_S)));
*((BYTE*)(pVideoBuffer + VIDEOBUF_VsyncPol)) = *((BYTE*)(pVidTab + (28*(26+LONG_S)) + 26));
*((BYTE*)(pVideoBuffer + VIDEOBUF_HsyncPol)) = *((BYTE*)(pVidTab + (27*(26+LONG_S)) + 26));
*((BYTE*)(pVideoBuffer + VIDEOBUF_HsyncDelay)) = *((BYTE*)(pCrtcTab + (33 * LONG_S)));
*((BYTE*)(pVideoBuffer + VIDEOBUF_Pedestal)) &= 0x80; /**** FORCE !#@$!@#$!@#$ ***/
*((DWORD*)(pVideoBuffer + VIDEOBUF_OvsColor)) = 0x0000; /**** FORCE !#@$!@#$!@#$ ***/
/*** srate and laserscl need to be set according to PCLK ***/
/*******************************************************************/
/*** PIXEL CLOCK : Programmation of registers SRATE and LASERSCL ***/
/*** N.B. Values of SCLK and SPLCLK are in MHz ***/
/* Find PCLK value in table Pclk_Ramdac[] */
for (p1 = Pclk_Ramdac; p1->FbPitch != (word)-1; p1++)
{
if (p1->FbPitch == Hw[iBoard].pCurrentDisplayMode->FbPitch)
{
if (Hw[iBoard].pCurrentDisplayMode->DispType & 0x1) /* if interlace */
{
switch (Hw[iBoard].DacType)
{
case BT482:
Sclk = p1->Pclk_I*(Hw[iBoard].pCurrentDisplayMode->PixWidth/8);
break;
case BT485:
case PX2085:
case VIEWPOINT:
case TVP3026:
Sclk = p1->Pclk_I/(32/Hw[iBoard].pCurrentDisplayMode->PixWidth);
break;
}
}
else
{
switch (Hw[iBoard].DacType)
{
case BT482:
Sclk = p1->Pclk_NI*(Hw[iBoard].pCurrentDisplayMode->PixWidth/8);
break;
case BT485:
case PX2085:
case VIEWPOINT:
case TVP3026:
Sclk = p1->Pclk_NI/(32/Hw[iBoard].pCurrentDisplayMode->PixWidth);
break;
}
}
break;
}
}
/*** MOUSE ***/
if (Hw[iBoard].PortCfg == MOUSE_PORT)
Srate = (dword)(Sclk/1.638400); /* Srate = SCLK / (200*32*256) */
/*** LASER ***/
else
{
if (Sclk < 22)
Srate = 0;
else if (Sclk >= 22 && Sclk < 44)
Srate = 1;
else if (Sclk >= 44 && Sclk < 88)
Srate = 3;
else if (Sclk >= 88 && Sclk < 176)
Srate = 7;
else
Srate = 9;
if ((Sclk/(Srate+1)) >= 0 && (Sclk/(Srate+1)) < 14)
LaserScl = 0;
else if ((Sclk/(Srate+1)) >= 14 && (Sclk/(Srate+1)) < 17.5)
LaserScl = 1;
else if ((Sclk/(Srate+1)) >= 17.5)
LaserScl = 2;
}
*((BYTE*)(pVideoBuffer + VIDEOBUF_Srate)) = Srate;
*((BYTE*)(pVideoBuffer + VIDEOBUF_LaserScl)) = LaserScl;
/*** move the CTRC parameters in the VideoBuffer ***/
{ WORD i;
for (i = 0; i <= 28; i++)
{
*((BYTE*)(pVideoBuffer + VIDEOBUF_CRTC + i)) = *((BYTE*)(pCrtcTab + (i * LONG_S)));
}
}
}
#endif

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