/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/s3virge/s3v_accel.c,v 1.13 1999/06/27 14:08:12 dawes Exp $ */

/*
Copyright (C) 1994-1999 The XFree86 Project, Inc.  All Rights Reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of the XFree86 Project shall not
be used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from the XFree86 Project.
*/

#include "s3v.h"
#include "s3v_macros.h"

#include "miline.h"
	/* cfb includes are in s3v.h */
#include "xaalocal.h"
#include "xaarop.h"

#include "servermd.h" /* LOG2_BYTES_PER_SCANLINE_PAD */

static void S3VWriteMask(CARD32*, int);

static void S3VEngineReset(ScrnInfoPtr pScrn);
/* s3v.h - static void S3VAccelSync(ScrnInfoPtr); */
static void S3VSetupForSolidFill(ScrnInfoPtr, int, int, unsigned);
static void S3VSubsequentSolidFillRect(ScrnInfoPtr, int, int, int, int);
static void S3VSubsequentSolidFillRectPlaneMask(ScrnInfoPtr, int, int, 
				int, int);
static void S3VSetupForMono8x8PatternFill(ScrnInfoPtr,int, int, int, int,
                                int, unsigned int);
static void S3VSubsequentMono8x8PatternFillRect(ScrnInfoPtr,int, int,
                                int, int, int, int);
static void S3VSubsequentMono8x8PatternFillRectPlaneMask(ScrnInfoPtr,int, int,
                                int, int, int, int);
static void S3VSetupForScreenToScreenCopy(ScrnInfoPtr, int, int, int, 
				unsigned int, int); 
static void S3VSubsequentScreenToScreenCopy(ScrnInfoPtr, int, int, int, int, 
				int, int);
static void S3VSetupForCPUToScreenColorExpand(ScrnInfoPtr, int, int, int, 
				unsigned int);
static void S3VSubsequentCPUToScreenColorExpand(ScrnInfoPtr, int, int, int, 
				int, int);
static void S3VSetupForImageWrite(ScrnInfoPtr, int, unsigned int, int, 
				int, int);
static void S3VSubsequentImageWriteRect(ScrnInfoPtr, int, int, int, int, int);
static void S3VSubsequentSolidHorVertLine(ScrnInfoPtr, int, int, int, int);
static void S3VSubsequentSolidHorVertLinePlaneMask(ScrnInfoPtr, int, int, 
				int, int);
static void S3VSubsequentSolidBresenhamLine(ScrnInfoPtr, int, int, int, 
				int, int, int, int);
static void S3VPolylinesThinSolidWrapper(DrawablePtr, GCPtr, int, int, 
				DDXPointPtr);
static void S3VPolySegmentThinSolidWrapper(DrawablePtr, GCPtr, int, xSegment*);

Bool 
S3VAccelInit(ScreenPtr pScreen)
{
    XAAInfoRecPtr infoPtr;
    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    S3VPtr ps3v = S3VPTR(pScrn);
    BoxRec AvailFBArea;

    ps3v->AccelInfoRec = infoPtr = XAACreateInfoRec();
    if(!infoPtr) return FALSE;


    switch(ps3v->Chipset) {
    case S3_ViRGE:
    case S3_ViRGE_VX:
	ps3v->AccelFlags = BLT_BUG;
    default:
	ps3v->AccelFlags = 0;
	break;
    }

    ps3v->AccelFlags |= MONO_TRANS_BUG; /* which aren't broken ? */


    infoPtr->Flags = PIXMAP_CACHE |
		     LINEAR_FRAMEBUFFER |
		     OFFSCREEN_PIXMAPS;

    infoPtr->Sync = S3VAccelSync;

    /* Solid filled rects */
    infoPtr->SetupForSolidFill = 
        S3VSetupForSolidFill;
    infoPtr->SubsequentSolidFillRect = 
        S3VSubsequentSolidFillRect;

    /* Screen to screen copies */
    infoPtr->SetupForScreenToScreenCopy =
        S3VSetupForScreenToScreenCopy;
    infoPtr->SubsequentScreenToScreenCopy =
        S3VSubsequentScreenToScreenCopy;
    infoPtr->ScreenToScreenCopyFlags = NO_TRANSPARENCY;

    /* Mono 8x8 patterns */
    infoPtr->SetupForMono8x8PatternFill =
        S3VSetupForMono8x8PatternFill;
    infoPtr->SubsequentMono8x8PatternFillRect =
        S3VSubsequentMono8x8PatternFillRect;
    infoPtr->Mono8x8PatternFillFlags = NO_TRANSPARENCY |
				HARDWARE_PATTERN_PROGRAMMED_BITS |
				HARDWARE_PATTERN_SCREEN_ORIGIN |
				BIT_ORDER_IN_BYTE_LSBFIRST;


#ifndef __alpha__
    /* CPU to screen color expansion */
    infoPtr->CPUToScreenColorExpandFillFlags =  ROP_NEEDS_SOURCE |
					CPU_TRANSFER_PAD_DWORD |
                                        SCANLINE_PAD_DWORD |
                                        BIT_ORDER_IN_BYTE_MSBFIRST |
                                  	LEFT_EDGE_CLIPPING;

    if(ps3v->AccelFlags & MONO_TRANS_BUG)
	infoPtr->CPUToScreenColorExpandFillFlags |=  NO_TRANSPARENCY;

    infoPtr->ColorExpandRange = 0x8000;
#ifdef __alpha__
    infoPtr->ColorExpandBase = ps3v->MapBaseDense;
#else
    infoPtr->ColorExpandBase = ps3v->MapBase;
#endif /* __alpha__ */
    infoPtr->SetupForCPUToScreenColorExpandFill =
                S3VSetupForCPUToScreenColorExpand;
    infoPtr->SubsequentCPUToScreenColorExpandFill =
                S3VSubsequentCPUToScreenColorExpand;

    
    /* Image Writes */
    infoPtr->ImageWriteFlags =  	ROP_NEEDS_SOURCE |
					NO_TRANSPARENCY |
					CPU_TRANSFER_PAD_DWORD |
                                        SCANLINE_PAD_DWORD |
                                  	LEFT_EDGE_CLIPPING; 

    infoPtr->ImageWriteRange = 0x8000;
#ifdef __alpha__
    infoPtr->ImageWriteBase = ps3v->MapBaseDense;
#else
    infoPtr->ImageWriteBase = ps3v->MapBase;
#endif /* __alpha__ */
    infoPtr->SetupForImageWrite = S3VSetupForImageWrite;
    infoPtr->SubsequentImageWriteRect = S3VSubsequentImageWriteRect;
    
    /* on alpha, I see corruption in the xscreensaver program "hypercube"
       as the line acceleration is just stubs, it loses us nothing to
       disable it on alphas */
    
    /* Lines */
    infoPtr->SetupForSolidLine = S3VSetupForSolidFill;
    infoPtr->SubsequentSolidHorVertLine = S3VSubsequentSolidHorVertLine;
    infoPtr->SubsequentSolidBresenhamLine = S3VSubsequentSolidBresenhamLine;
    infoPtr->PolySegmentThinSolid = S3VPolySegmentThinSolidWrapper;
    infoPtr->PolylinesThinSolid = S3VPolylinesThinSolidWrapper;

#endif /* !__alpha__ */
    
    /* And these are screen parameters used to setup the GE */

     ps3v->Width = pScrn->displayWidth;
     					/* Bytes per pixel */
     ps3v->Bpp = pScrn->bitsPerPixel / 8;
     					/* Bytes per line */
     ps3v->Bpl = ps3v->Width * ps3v->Bpp;
     					/* ScissB is max height, minus 1k */
					/* for hwcursor?, then limited by */
					/* ViRGE max height register of   */
					/* 2047 */
     ps3v->ScissB = (pScrn->videoRam * 1024 - 1024) / ps3v->Bpl;
     if (ps3v->ScissB > 2047)
         ps3v->ScissB = 2047;


    S3VEngineReset(pScrn);


    AvailFBArea.x1 = 0;
    AvailFBArea.y1 = 0;
    AvailFBArea.x2 = pScrn->displayWidth;
    AvailFBArea.y2 = (pScrn->videoRam * 1024 - 1024) / 
		     (pScrn->displayWidth * pScrn->bitsPerPixel / 8);

    xf86InitFBManager(pScreen, &AvailFBArea);

    /* make sure offscreen pixmaps aren't bigger than our address space */
    infoPtr->maxOffPixWidth  = 2048;
    infoPtr->maxOffPixHeight = 2048;

    return (XAAInit(pScreen, infoPtr));
} 


Bool 
S3VAccelInit32(ScreenPtr pScreen) 
{
   return FALSE; 
}

void
S3VGEReset(ScrnInfoPtr pScrn, int from_timeout, int line, char *file)
{
    unsigned char tmp;
    int r;
    CARD32 fifo_control = 0, miu_control = 0;
    CARD32 streams_timeout = 0, misc_timeout = 0;
    vgaHWPtr hwp = VGAHWPTR(pScrn);
	S3VPtr ps3v = S3VPTR(pScrn);
  	int vgaCRIndex, vgaCRReg, vgaIOBase;
  	vgaIOBase = hwp->IOBase;
  	vgaCRIndex = vgaIOBase + 4;
  	vgaCRReg = vgaIOBase + 5;  	  


    if (from_timeout) {
      if (ps3v->GEResetCnt++ < 10 || xf86GetVerbosity() > 1)
	ErrorF("\tS3VGEReset called from %s line %d\n",file,line);
    }
    else
      WaitIdleEmpty();


    if (from_timeout && (ps3v->Chipset == S3_ViRGE || ps3v->Chipset == S3_ViRGE_VX || ps3v->Chipset == S3_ViRGE_DXGX)) {
      /* reset will trash these registers, so save them */
      fifo_control    = INREG(FIFO_CONTROL_REG);
      miu_control     = INREG(MIU_CONTROL_REG);
      streams_timeout = INREG(STREAMS_TIMEOUT_REG);
      misc_timeout    = INREG(MISC_TIMEOUT_REG);
    }

    if(ps3v->Chipset == S3_ViRGE_VX){
        VGAOUT8(vgaCRIndex, 0x63);
        }
    else {
        VGAOUT8(vgaCRIndex, 0x66);
        }
    tmp = VGAIN8(vgaCRReg);
    
    usleep(10000);
    for (r=1; r<10; r++) {  /* try multiple times to avoid lockup of ViRGE/MX */
      VGAOUT8(vgaCRReg, tmp | 0x02);
      usleep(10000);
      VGAOUT8(vgaCRReg, tmp & ~0x02);
      usleep(10000);

      xf86ErrorFVerb(VERBLEV, "	S3VGEReset sub_stat=%x \n", 
   	IN_SUBSYS_STAT()
	);

      if (!from_timeout) 
        WaitIdleEmpty();

      OUTREG(DEST_SRC_STR, ps3v->Bpl << 16 | ps3v->Bpl);
      
      usleep(10000);
      if (((IN_SUBSYS_STAT() & 0x3f00) != 0x3000)) 
	xf86ErrorFVerb(VERBLEV, "restarting S3 graphics engine reset %2d ...\n",r);
      else
	break;
    } 
    
    if (from_timeout && (ps3v->Chipset == S3_ViRGE || ps3v->Chipset == S3_ViRGE_VX
			 || ps3v->Chipset == S3_ViRGE_DXGX)) {
      /* restore trashed registers */
      OUTREG(FIFO_CONTROL_REG, fifo_control);
      OUTREG(MIU_CONTROL_REG, miu_control);
      OUTREG(STREAMS_TIMEOUT_REG, streams_timeout);
      OUTREG(MISC_TIMEOUT_REG, misc_timeout);
    }

    WAITFIFO(2);
/*      SETB_SRC_BASE(0); */
/*      SETB_DEST_BASE(0);    */
    OUTREG(SRC_BASE, 0);
    OUTREG(DEST_BASE, 0);

  	WAITFIFO(4);
    OUTREG(CLIP_L_R, ((0) << 16) | ps3v->Width);
    OUTREG(CLIP_T_B, ((0) << 16) | ps3v->ScissB);
    OUTREG(MONO_PAT_0, ~0);
    OUTREG(MONO_PAT_1, ~0);

}

/* The sync function for the GE */
void
S3VAccelSync(ScrnInfoPtr pScrn)
{
    S3VPtr ps3v = S3VPTR(pScrn);

    WAITIDLE();
}


static void
S3VEngineReset(ScrnInfoPtr pScrn)
{
    S3VPtr ps3v = S3VPTR(pScrn);

    ps3v->SrcBaseY = 0;
    ps3v->DestBaseY = 0; 
    ps3v->Stride = pScrn->displayWidth * pScrn->bitsPerPixel >> 3;

    switch(pScrn->bitsPerPixel) {
    case 8: 	ps3v->CommonCmd = DRAW | DST_8BPP;
		ps3v->FullPlaneMask = 0x000000ff;
		ps3v->bltbug_width1 = 51;
		ps3v->bltbug_width2 = 64;
		break;
    case 16: 	ps3v->CommonCmd = DRAW | DST_16BPP;
		ps3v->FullPlaneMask = 0x0000ffff;
		ps3v->bltbug_width1 = 26;
		ps3v->bltbug_width2 = 32;
		break;
    case 24: 	ps3v->CommonCmd = DRAW | DST_24BPP;
		ps3v->FullPlaneMask = 0x00ffffff;
		ps3v->bltbug_width1 = 16;
		ps3v->bltbug_width2 = 22;
		break;
    }


    WAITFIFO(5);
    OUTREG(SRC_BASE, 0);
    OUTREG(DEST_BASE, 0);
    OUTREG(DEST_SRC_STR, ps3v->Stride | (ps3v->Stride << 16));

    OUTREG(CLIP_L_R, ((0) << 16) | ps3v->Width);
    OUTREG(CLIP_T_B, ((0) << 16) | ps3v->ScissB);
}


static void
S3VWriteMask(
   CARD32 *dstBase,
   int dwords
){
  /* on alphas, be sure to call this with MapBaseDense, not MapBase! */
   int numLeft;
   CARD32 *dst = dstBase;

   while(dwords >= 8192) {
	numLeft = 8192;
	while(numLeft) {
	  dst[0] = ~0; dst[1] = ~0;
	  dst[2] = ~0; dst[3] = ~0;
	  dst += 4;
	  numLeft -= 4;
	}
	dwords -= 8192;
	dst = dstBase;
   }
   while(dwords >= 4) {
	dst[0] = ~0; dst[1] = ~0;
	dst[2] = ~0; dst[3] = ~0;
	dst += 4;
	dwords -= 4;
   }
   if(!dwords) return;
   dst[0] = ~0;
   if(dwords == 1) return;
   dst[1] = ~0;
   if(dwords == 2) return;
   dst[2] = ~0;

   return;
}


	/************************\
	|  Solid Filled Rects    |
	\************************/

static void 
S3VSetupForSolidFill(
   ScrnInfoPtr pScrn, 
   int color, int rop, 
   unsigned int planemask
){
    S3VPtr ps3v = S3VPTR(pScrn);
    int mix;

    mix = XAAHelpSolidROP(pScrn, &color, planemask, &rop);

    ps3v->AccelCmd = ps3v->CommonCmd | (rop << 17) |
			CMD_XP | CMD_YP | CMD_AUTOEXEC | CMD_BITBLT;
 
    if(mix & ROP_SRC) {
	ps3v->AccelCmd |= MIX_CPUDATA | CMD_ITA_DWORD | MIX_MONO_SRC;
	ps3v->AccelInfoRec->SubsequentSolidFillRect = 
		S3VSubsequentSolidFillRectPlaneMask;
	ps3v->AccelInfoRec->SubsequentSolidHorVertLine =
		S3VSubsequentSolidHorVertLinePlaneMask;	
	WAITFIFO(5);
	OUTREG(SRC_FG_CLR, planemask);
    } else {
	ps3v->AccelInfoRec->SubsequentSolidFillRect =
		S3VSubsequentSolidFillRect;	
	ps3v->AccelInfoRec->SubsequentSolidHorVertLine =
		S3VSubsequentSolidHorVertLine;	
	WAITFIFO(4);
    }

    if(mix & ROP_PAT) {
	ps3v->AccelCmd |= MIX_MONO_PATT;
	OUTREG(PAT_FG_CLR, color);
	OUTREG(MONO_PAT_0, ~0);
	OUTREG(MONO_PAT_1, ~0);
    }

    OUTREG(CMD_SET, ps3v->AccelCmd);
}


void 
S3VSubsequentSolidFillRect(
   ScrnInfoPtr pScrn, 
   int x, int y, 
   int w, int h
){
    S3VPtr ps3v = S3VPTR(pScrn);

    CHECK_DEST_BASE(y,h);

    WAITFIFO(2);
    OUTREG(RWIDTH_HEIGHT, ((w - 1) << 16) | h);
    OUTREG(RDEST_XY, (x << 16) | y);
}


void 
S3VSubsequentSolidFillRectPlaneMask(
   ScrnInfoPtr pScrn, 
   int x, int y, 
   int w, int h
){
    S3VPtr ps3v = S3VPTR(pScrn);
    int dwords;

    CHECK_DEST_BASE(y,h);

    dwords = ((w + 31) >> 5) * h;

    WAITFIFO(2);
    OUTREG(RWIDTH_HEIGHT, ((w - 1) << 16) | h);
    OUTREG(RDEST_XY, (x << 16) | y);
#ifndef __alpha__
    S3VWriteMask((CARD32*)ps3v->MapBase, dwords);
#else
    S3VWriteMask((CARD32*)ps3v->MapBaseDense, dwords);
#endif
}


	/**************************\
	|  Screen to Screen Copies |
	\**************************/

static void 
S3VSetupForScreenToScreenCopy(
   ScrnInfoPtr pScrn, 
   int xdir, int ydir, 
   int rop, 
   unsigned int planemask, 
   int trans
){
    S3VPtr ps3v = S3VPTR(pScrn);

    planemask &= ps3v->FullPlaneMask;
    ps3v->AccelCmd = ps3v->CommonCmd | CMD_AUTOEXEC | CMD_BITBLT;
 
    if(planemask != ps3v->FullPlaneMask) {     
        ps3v->AccelCmd |= (XAACopyROP_PM[rop] << 17) | MIX_MONO_PATT;
	WAITFIFO(4);
	OUTREG(PAT_FG_CLR, planemask);
	OUTREG(MONO_PAT_0, ~0);
	OUTREG(MONO_PAT_1, ~0);
        }
    else {
        ps3v->AccelCmd |= XAACopyROP[rop] << 17;
	WAITFIFO(1);
        }
    if(xdir == 1) ps3v->AccelCmd |= CMD_XP;
    if(ydir == 1) ps3v->AccelCmd |= CMD_YP;
   
    OUTREG(CMD_SET, ps3v->AccelCmd);
}


static void 
S3VSubsequentScreenToScreenCopy(ScrnInfoPtr pScrn, int x1, int y1, 
        int x2, int y2, int w, int h)
{
    S3VPtr ps3v = S3VPTR(pScrn);

    CHECK_SRC_BASE(y1,h);
    CHECK_DEST_BASE(y2,h);

    w--;

    if(!(ps3v->AccelCmd & CMD_YP)) {
	y1 += h - 1; y2 += h - 1;
    }

    if(!(ps3v->AccelCmd & CMD_XP)) {
	x1 += w; x2 += w;
    }

    WAITFIFO(3);
    OUTREG(RWIDTH_HEIGHT, (w << 16) | h);
    OUTREG(RSRC_XY, (x1 << 16) | y1);
    OUTREG(RDEST_XY, (x2 << 16) | y2);
}


	/*********************\
	|  8x8 Pattern fills  |
	\*********************/


static void 
S3VSetupForMono8x8PatternFill(
    ScrnInfoPtr pScrn,
    int patx, int paty, 
    int fg, int bg,
    int rop, unsigned int planemask
){
    S3VPtr ps3v = S3VPTR(pScrn);
    int mix;

    mix = XAAHelpPatternROP(pScrn, &fg, &bg, planemask, &rop);

    ps3v->AccelCmd = ps3v->CommonCmd | (rop << 17) |
			CMD_XP | CMD_YP | CMD_AUTOEXEC | CMD_BITBLT;

    if(mix & ROP_SRC) {
 	ps3v->AccelCmd |= MIX_CPUDATA | CMD_ITA_DWORD | MIX_MONO_SRC;
	ps3v->AccelInfoRec->SubsequentMono8x8PatternFillRect = 
		S3VSubsequentMono8x8PatternFillRectPlaneMask;
	WAITFIFO(6);
	OUTREG(SRC_FG_CLR, planemask);
    } else {
	ps3v->AccelInfoRec->SubsequentMono8x8PatternFillRect =
		S3VSubsequentMono8x8PatternFillRect;	
	WAITFIFO(5);
    }

    if(mix & ROP_PAT) {
	ps3v->AccelCmd |= MIX_MONO_PATT;
	OUTREG(PAT_FG_CLR, fg);
	OUTREG(PAT_BG_CLR, bg);
	OUTREG(MONO_PAT_0, patx);
	OUTREG(MONO_PAT_1, paty);
    }

    OUTREG(CMD_SET, ps3v->AccelCmd);
}


static void 
S3VSubsequentMono8x8PatternFillRect(
    ScrnInfoPtr pScrn,
    int patx, int paty,
    int x, int y, int w, int h 
){
    S3VPtr ps3v = S3VPTR(pScrn);

    CHECK_DEST_BASE(y,h);

    WAITFIFO(2);
    OUTREG(RWIDTH_HEIGHT, ((w - 1) << 16) | h);
    OUTREG(RDEST_XY, (x << 16) | y);
}


static void 
S3VSubsequentMono8x8PatternFillRectPlaneMask(
    ScrnInfoPtr pScrn,
    int patx, int paty,
    int x, int y, int w, int h 
){
    S3VPtr ps3v = S3VPTR(pScrn);
    int dwords;

    CHECK_DEST_BASE(y,h);

    dwords = ((w + 31) >> 5) * h;

    WAITFIFO(2);
    OUTREG(RWIDTH_HEIGHT, ((w - 1) << 16) | h);
    OUTREG(RDEST_XY, (x << 16) | y);

#ifndef __alpha__
    S3VWriteMask((CARD32*)ps3v->MapBase, dwords);
#else
    S3VWriteMask((CARD32*)ps3v->MapBaseDense, dwords);
#endif
}

	/*********************************\
	|  CPU to Screen Color Expansion  |
	\*********************************/


static void
S3VSetupForCPUToScreenColorExpand(
    ScrnInfoPtr pScrn, 
    int fg, int bg, 
    int rop, 
    unsigned int planemask
){
    S3VPtr ps3v = S3VPTR(pScrn);

    planemask &= ps3v->FullPlaneMask;
    ps3v->AccelCmd = ps3v->CommonCmd | CMD_AUTOEXEC | CMD_BITBLT | 
		CMD_XP | CMD_YP | CMD_ITA_DWORD | CMD_HWCLIP |
		MIX_CPUDATA | MIX_MONO_SRC;


    if(planemask == ps3v->FullPlaneMask) { 
        ps3v->AccelCmd |= XAACopyROP[rop] << 17;
	WAITFIFO(3);
    } else {
        ps3v->AccelCmd |= (XAACopyROP_PM[rop] << 17) | MIX_MONO_PATT;
	WAITFIFO(6);
	OUTREG(MONO_PAT_0, ~0);
	OUTREG(MONO_PAT_1, ~0);
        OUTREG(PAT_FG_CLR, planemask);
    }

    if(bg == -1)
	ps3v->AccelCmd |= MIX_MONO_TRANSP;
    else
	OUTREG(SRC_BG_CLR, bg);

    OUTREG(SRC_FG_CLR, fg);
    OUTREG(CMD_SET, ps3v->AccelCmd);
}


void
S3VSubsequentCPUToScreenColorExpand(
    ScrnInfoPtr pScrn, 
    int x, int y, 
    int w, int h, 
    int skipleft
){
    S3VPtr ps3v = S3VPTR(pScrn);

    CHECK_DEST_BASE(y,h);

    WAITFIFO(3);
    OUTREG(CLIP_L_R, ((x + skipleft) << 16) | 0xffff);
    OUTREG(RWIDTH_HEIGHT, ((w - 1) << 16) | h);
    OUTREG(RDEST_XY, (x << 16) | y);
}


    /****************\
    |  Image Writes  |
    \****************/


static void
S3VSetupForImageWrite(
   ScrnInfoPtr pScrn, 
   int rop, unsigned int planemask,
   int trans_color, int bpp, int depth
){
    S3VPtr ps3v = S3VPTR(pScrn);

    planemask &= ps3v->FullPlaneMask;
    ps3v->AccelCmd = ps3v->CommonCmd | CMD_AUTOEXEC | CMD_BITBLT | 
		MIX_CPUDATA | CMD_ITA_DWORD | CMD_HWCLIP | CMD_XP | CMD_YP;
 
    if(planemask != ps3v->FullPlaneMask) {     
        ps3v->AccelCmd |= (XAACopyROP_PM[rop] << 17) | MIX_MONO_PATT;
	WAITFIFO(4);
	OUTREG(PAT_FG_CLR, planemask);
	OUTREG(MONO_PAT_0, ~0);
	OUTREG(MONO_PAT_1, ~0);
    } else {
        ps3v->AccelCmd |= XAACopyROP[rop] << 17;
	WAITFIFO(1);
    }
   
    OUTREG(CMD_SET, ps3v->AccelCmd);
}


static void
S3VSubsequentImageWriteRect(
    ScrnInfoPtr pScrn, 
    int x, int y, 
    int w, int h, 
    int skipleft
){
    S3VPtr ps3v = S3VPTR(pScrn);

    CHECK_DEST_BASE(y,h);

    WAITFIFO(3);
    OUTREG(CLIP_L_R, ((x + skipleft) << 16) | 0xffff);
    OUTREG(RWIDTH_HEIGHT, ((w - 1) << 16) | h);
    OUTREG(RDEST_XY, (x << 16) | y);
}


	/***********\
	|   Lines   |
	\***********/

static void 
S3VPolylinesThinSolidWrapper(
   DrawablePtr     pDraw,
   GCPtr           pGC,
   int             mode,
   int             npt,
   DDXPointPtr     pPts
){
    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
    S3VPtr ps3v = S3VPTR(infoRec->pScrn);
    ps3v->CurrentGC = pGC;
    if(infoRec->NeedToSync) 
	S3VAccelSync(infoRec->pScrn);
    XAAPolyLines(pDraw, pGC, mode, npt, pPts);
}

static void 
S3VPolySegmentThinSolidWrapper(
   DrawablePtr     pDraw,
   GCPtr           pGC,
   int             nseg,
   xSegment        *pSeg
){
    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
    S3VPtr ps3v = S3VPTR(infoRec->pScrn);
    ps3v->CurrentGC = pGC;
    if(infoRec->NeedToSync) 
	S3VAccelSync(infoRec->pScrn);
    XAAPolySegment(pDraw, pGC, nseg, pSeg);
}

static void
S3VSubsequentSolidHorVertLine(
    ScrnInfoPtr pScrn,
    int x, int y, 
    int len, int dir
){
    S3VPtr ps3v = S3VPTR(pScrn);
    int w, h;

    if(dir == DEGREES_0) {
	w = len; h = 1;
    } else {
	w = 1; h = len;
    }

    CHECK_DEST_BASE(y,h);

    WAITFIFO(2);
    OUTREG(RWIDTH_HEIGHT, ((w - 1) << 16) | h);
    OUTREG(RDEST_XY, (x << 16) | y);
}

static void
S3VSubsequentSolidHorVertLinePlaneMask(
    ScrnInfoPtr pScrn,
    int x, int y, 
    int len, int dir
){
    S3VPtr ps3v = S3VPTR(pScrn);
    int w, h, dwords;

    if(dir == DEGREES_0) {
	w = len; h = 1; dwords = (len + 31) >> 5;
    } else {
	w = 1; h = len; dwords = len;
    }
    
    CHECK_DEST_BASE(y,h);

    WAITFIFO(2);
    OUTREG(RWIDTH_HEIGHT, ((w - 1) << 16) | h);
    OUTREG(RDEST_XY, (x << 16) | y);

#ifndef __alpha__
    S3VWriteMask((CARD32*)ps3v->MapBase, dwords);
#else
    S3VWriteMask((CARD32*)ps3v->MapBaseDense, dwords);
#endif
}


void (*LineFuncs[3])() = {
  cfbBresS,
  cfb16BresS,
  cfb24BresS
};


static void 
S3VSubsequentSolidBresenhamLine( 
   ScrnInfoPtr pScrn,
   int x, int y, 
   int dmaj, int dmin, 
   int e, int len, int octant
){
    S3VPtr ps3v = S3VPTR(pScrn);
    cfbPrivGCPtr devPriv;
    int Bpp = pScrn->bitsPerPixel >> 3;

    devPriv = cfbGetGCPrivate(ps3v->CurrentGC);

    /* you could trap for lines you could do here and accelerate them */

    (*LineFuncs[Bpp - 1])
		(devPriv->rop, devPriv->and, devPriv->xor, 
                (unsigned long*)ps3v->FBBase,
		 (pScrn->displayWidth * Bpp) >> LOG2_BYTES_PER_SCANLINE_PAD, 
                (octant & XDECREASING) ? -1 : 1, 
                (octant & YDECREASING) ? -1 : 1, 
                (octant & YMAJOR) ? Y_AXIS : X_AXIS,
                x, y, dmin + e, dmin, dmin - dmaj, len);
}