text: /*
  Copyright (C) 1994-1999 The XFree86 Project, Inc.  All Rights Reserved.
  Copyright (C) 2000 Silicon Motion, 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 names of the XFree86 Project and
  Silicon Motion 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 and silicon Motion.
  */
  /* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/siliconmotion/smi_accel.c,v 1.13 2006/03/09 17:37:08 tsi Exp $ */
  
  #include "smi.h"
  
  #include "miline.h"
  #include "xaalocal.h"
  #include "xaarop.h"
  #include "servermd.h"
  
  
  static void SMI_SetupForScreenToScreenCopy(ScrnInfoPtr, int, int, int,
  										   unsigned int, int);
  static void SMI_SubsequentScreenToScreenCopy(ScrnInfoPtr, int, int, int, int,
  											 int, int);
  static void SMI_SetupForSolidFill(ScrnInfoPtr, int, int, unsigned);
  static void SMI_SubsequentSolidFillRect(ScrnInfoPtr, int, int, int, int);
  static void SMI_SubsequentSolidHorVertLine(ScrnInfoPtr, int, int, int, int);
  static void SMI_SetupForCPUToScreenColorExpandFill(ScrnInfoPtr, int, int, int,
  												   unsigned int);
  static void SMI_SubsequentCPUToScreenColorExpandFill(ScrnInfoPtr, int, int, int,
  												     int, int);
  static void SMI_SetupForMono8x8PatternFill(ScrnInfoPtr, int, int, int, int, int,
  										   unsigned int);
  static void SMI_SubsequentMono8x8PatternFillRect(ScrnInfoPtr, int, int, int,
  												 int, int, int);
  static void SMI_SetupForColor8x8PatternFill(ScrnInfoPtr, int, int, int,
  											unsigned int, int);
  static void SMI_SubsequentColor8x8PatternFillRect(ScrnInfoPtr, int, int, int,
  												  int, int, int);
  #if SMI_USE_IMAGE_WRITES
  static void SMI_SetupForImageWrite(ScrnInfoPtr, int, unsigned int, int, int,
  								   int);
  static void SMI_SubsequentImageWriteRect(ScrnInfoPtr, int, int, int, int, int);
  #endif
  static void SMI_SetClippingRectangle(ScrnInfoPtr, int, int, int, int);
  static void SMI_DisableClipping(ScrnInfoPtr);
  /* #671 */
  static void SMI_ValidatePolylines(GCPtr, unsigned long, DrawablePtr);
  static void SMI_Polylines(DrawablePtr, GCPtr, int, int, DDXPointPtr);
  
  Bool
  SMI_AccelInit(ScreenPtr pScreen)
  {
  	XAAInfoRecPtr infoPtr;
  	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
  	SMIPtr pSmi = SMIPTR(pScrn);
      /*BoxRec AvailFBArea;*/
  	Bool ret;
      /*int numLines, maxLines;*/
  
  	ENTER_PROC("SMI_AccelInit");
  
  	pSmi->AccelInfoRec = infoPtr = XAACreateInfoRec();
  	if (infoPtr == NULL)
  	{
  		LEAVE_PROC("SMI_AccelInit");
  		return FALSE;
  	}
  
  	infoPtr->Flags = PIXMAP_CACHE
  				   | LINEAR_FRAMEBUFFER
  				   | OFFSCREEN_PIXMAPS;
  
  	infoPtr->Sync = SMI_AccelSync;
  
  	/* Screen to screen copies */
  	infoPtr->ScreenToScreenCopyFlags = NO_PLANEMASK
  									 | ONLY_TWO_BITBLT_DIRECTIONS;
  	infoPtr->SetupForScreenToScreenCopy = SMI_SetupForScreenToScreenCopy;
  	infoPtr->SubsequentScreenToScreenCopy = SMI_SubsequentScreenToScreenCopy;
  	if (pScrn->bitsPerPixel == 24)
  	{
  		infoPtr->ScreenToScreenCopyFlags |= NO_TRANSPARENCY;
  	}
  	if ((pSmi->Chipset == SMI_LYNX3D) && (pScrn->bitsPerPixel == 8))
  	{
  		infoPtr->ScreenToScreenCopyFlags |= GXCOPY_ONLY;
  	}
  
  	/* Solid Fills */
  	infoPtr->SolidFillFlags = NO_PLANEMASK;
  	infoPtr->SetupForSolidFill = SMI_SetupForSolidFill;
  	infoPtr->SubsequentSolidFillRect = SMI_SubsequentSolidFillRect;
  
  	/* Solid Lines */
  	infoPtr->SolidLineFlags = NO_PLANEMASK;
  	infoPtr->SetupForSolidLine = SMI_SetupForSolidFill;
  	infoPtr->SubsequentSolidHorVertLine = SMI_SubsequentSolidHorVertLine;
  
  	/* Color Expansion Fills */
  	infoPtr->CPUToScreenColorExpandFillFlags = ROP_NEEDS_SOURCE
  											 | NO_PLANEMASK
  #if X_BYTE_ORDER == X_BIG_ENDIAN
  											 | BIT_ORDER_IN_BYTE_LSBFIRST
  #else
  											 | BIT_ORDER_IN_BYTE_MSBFIRST
  #endif
  											 | LEFT_EDGE_CLIPPING
  											 | CPU_TRANSFER_PAD_DWORD
  											 | SCANLINE_PAD_DWORD;
  	infoPtr->ColorExpandBase = pSmi->DataPortBase;
  	infoPtr->ColorExpandRange = pSmi->DataPortSize;
  	infoPtr->SetupForCPUToScreenColorExpandFill =
  			SMI_SetupForCPUToScreenColorExpandFill;
  	infoPtr->SubsequentCPUToScreenColorExpandFill =
  			SMI_SubsequentCPUToScreenColorExpandFill;
  
  	/* 8x8 Mono Pattern Fills */
  	infoPtr->Mono8x8PatternFillFlags = NO_PLANEMASK
  									 | HARDWARE_PATTERN_PROGRAMMED_BITS
  									 | HARDWARE_PATTERN_SCREEN_ORIGIN
  									 | BIT_ORDER_IN_BYTE_MSBFIRST;
  	infoPtr->SetupForMono8x8PatternFill = SMI_SetupForMono8x8PatternFill;
  	infoPtr->SubsequentMono8x8PatternFillRect =
  			SMI_SubsequentMono8x8PatternFillRect;
  
  	/* 8x8 Color Pattern Fills */
  	if (!SMI_LYNX3D_SERIES(pSmi->Chipset) || (pScrn->bitsPerPixel != 24))
  	{
  		infoPtr->Color8x8PatternFillFlags = NO_PLANEMASK
  										  | HARDWARE_PATTERN_SCREEN_ORIGIN;
  		infoPtr->SetupForColor8x8PatternFill =
  				SMI_SetupForColor8x8PatternFill;
  		infoPtr->SubsequentColor8x8PatternFillRect =
  				SMI_SubsequentColor8x8PatternFillRect;
  	}
  
  #if SMI_USE_IMAGE_WRITES
  	/* Image Writes */
  	infoPtr->ImageWriteFlags = ROP_NEEDS_SOURCE
  							 | NO_PLANEMASK
  							 | CPU_TRANSFER_PAD_DWORD
  							 | SCANLINE_PAD_DWORD;
  	infoPtr->ImageWriteBase = pSmi->DataPortBase;
  	infoPtr->ImageWriteRange = pSmi->DataPortSize;
  	infoPtr->SetupForImageWrite = SMI_SetupForImageWrite;
  	infoPtr->SubsequentImageWriteRect = SMI_SubsequentImageWriteRect;
  #endif
  
  	/* Clipping */
  	infoPtr->ClippingFlags = HARDWARE_CLIP_SCREEN_TO_SCREEN_COPY
  						   | HARDWARE_CLIP_MONO_8x8_FILL
  						   | HARDWARE_CLIP_COLOR_8x8_FILL
  						   | HARDWARE_CLIP_SOLID_FILL
  						   | HARDWARE_CLIP_SOLID_LINE
  						   | HARDWARE_CLIP_DASHED_LINE;
  	infoPtr->SetClippingRectangle = SMI_SetClippingRectangle;
  	infoPtr->DisableClipping = SMI_DisableClipping;
  
  	/* Pixmap Cache */
  	if (pScrn->bitsPerPixel == 24)
  	{
  		infoPtr->CachePixelGranularity = 16;
  	}
  	else
  	{
  		infoPtr->CachePixelGranularity = 128 / pScrn->bitsPerPixel;
  	}
  
  	/* Offscreen Pixmaps */
  	infoPtr->maxOffPixWidth  = 4096;
  	infoPtr->maxOffPixHeight = 4096;
  	if (pScrn->bitsPerPixel == 24)
  	{
  		infoPtr->maxOffPixWidth = 4096 / 3;
  
  		if (pSmi->Chipset == SMI_LYNX)
  		{
  			infoPtr->maxOffPixHeight = 4096 / 3;
  		}
  	}
  
  	SMI_EngineReset(pScrn);
  
  
      /* CZ 18.06.2001: moved to smi_driver.c before the NoAccel question
         to have offscreen framebuffer in NoAccel mode */
  #if 0
  	maxLines = pSmi->FBReserved / (pSmi->width * pSmi->Bpp);
  	if (pSmi->rotate)
  	{
  		numLines = maxLines;
  	}
  	else
  	{
  #if SMI_USE_VIDEO
  		numLines = ((pSmi->FBReserved - pSmi->width * pSmi->Bpp * pSmi->height)
  				 * 25 / 100 + pSmi->width * pSmi->Bpp - 1)
  				 / (pSmi->width * pSmi->Bpp);
  		numLines += pSmi->height;
  #else
  		numLines = maxLines;
  #endif
  	}
  
  	AvailFBArea.x1 = 0;
  	AvailFBArea.y1 = 0;
  	AvailFBArea.x2 = pSmi->width;
  	AvailFBArea.y2 = numLines;
  	xf86DrvMsg(pScrn->scrnIndex, X_INFO, "FrameBuffer Box: %d,%d - %d,%d\n",
  			AvailFBArea.x1, AvailFBArea.y1, AvailFBArea.x2, AvailFBArea.y2);
  	xf86InitFBManager(pScreen, &AvailFBArea);
  #endif
  
  	ret = XAAInit(pScreen, infoPtr);
  	if (ret && pSmi->shadowFB)										/* #671 */
  	{
  		pSmi->ValidatePolylines = infoPtr->ValidatePolylines;
  		infoPtr->ValidatePolylines = SMI_ValidatePolylines;
  	}
  
  	LEAVE_PROC("SMI_AccelInit");
  	return(ret);
  }
  
  void
  SMI_GEReset(ScrnInfoPtr pScrn, int from_timeout, int line, char *file)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  	CARD8 tmp = 0;
  
  	ENTER_PROC("SMI_GEReset");
  
  	if (from_timeout)
  	{
  		if (pSmi->GEResetCnt++ < 10 || xf86GetVerbosity() > 1)
  		{
  			xf86DrvMsg(pScrn->scrnIndex,X_INFO,"\tSMI_GEReset called from %s line %d\n", file, line);
  		}
  	}
  	else
  	{
  		WaitIdleEmpty();
  	}
  
  	if (pSmi->Chipset == SMI_MSOC)
  	{
  		CARD32 itmp = READ_SCR(pSmi, SCR00) & ~0x3000;
  		WRITE_SCR(pSmi, SCR00, (itmp | 0x3000));
  		WRITE_SCR(pSmi, SCR00, itmp);
  	}
  	else
  	{
  		tmp = VGAIN8_INDEX(pSmi, VGA_SEQ_INDEX, VGA_SEQ_DATA, 0x15);
  		VGAOUT8_INDEX(pSmi, VGA_SEQ_INDEX, VGA_SEQ_DATA, 0x15, tmp | 0x30);
  	}
  
  	WaitIdleEmpty();
  
  	if (pSmi->Chipset != SMI_MSOC)
  	{
  		VGAOUT8_INDEX(pSmi, VGA_SEQ_INDEX, VGA_SEQ_DATA, 0x15, tmp);
  	}
  
  	SMI_EngineReset(pScrn);
  
  	LEAVE_PROC("SMI_GEReset");
  }
  
  /* The sync function for the GE */
  void
  SMI_AccelSync(ScrnInfoPtr pScrn)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_AccelSync");
  
  	WaitIdleEmpty(); /* #161 */
  
  	LEAVE_PROC("SMI_AccelSync");
  }
  
  void
  SMI_EngineReset(ScrnInfoPtr pScrn)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  	CARD32 DEDataFormat = 0;
  	int i;
  	int xyAddress[] = { 320, 400, 512, 640, 800, 1024, 1280, 1600, 2048 };
  
  	ENTER_PROC("SMI_EngineReset");
  
  	pSmi->Stride = (pSmi->width * pSmi->Bpp + 15) & ~15;
  
  	switch (pScrn->bitsPerPixel)
  	{
  		case 8:
  			DEDataFormat = 0x00000000;
  			break;
  
  		case 16:
  			pSmi->Stride >>= 1;
  			DEDataFormat = 0x00100000;
  			break;
  
  		case 24:
  			DEDataFormat = 0x00300000;
  			break;
  
  		case 32:
  			pSmi->Stride >>= 2;
  			DEDataFormat = 0x00200000;
  			break;
  	}
  	for (i = 0; i < sizeof(xyAddress) / sizeof(xyAddress[0]); i++)
  	{
  		if (pSmi->rotate)
  		{
  			if (xyAddress[i] == pSmi->height)
  			{
  				DEDataFormat |= i << 16;
  				break;
  			}
  		}
  		else
  		{
  			if (xyAddress[i] == pSmi->width)
  			{
  				DEDataFormat |= i << 16;
  				break;
  			}
  		}
  	}
  
  	WaitIdleEmpty();
  	WRITE_DPR(pSmi, 0x10, (pSmi->Stride << 16) | pSmi->Stride);
  	WRITE_DPR(pSmi, 0x1C, DEDataFormat);
  	WRITE_DPR(pSmi, 0x24, 0xFFFFFFFF);
  	WRITE_DPR(pSmi, 0x28, 0xFFFFFFFF);
  	WRITE_DPR(pSmi, 0x3C, (pSmi->Stride << 16) | pSmi->Stride);
  	WRITE_DPR(pSmi, 0x40, 0);
  	WRITE_DPR(pSmi, 0x44, 0);
  
  	SMI_DisableClipping(pScrn);
  
  	LEAVE_PROC("SMI_EngineReset");
  }
  
  /******************************************************************************/
  /*							 Screen to Screen Copies						  */
  /******************************************************************************/
  
  static void
  SMI_SetupForScreenToScreenCopy(ScrnInfoPtr pScrn, int xdir, int ydir, int rop,
  							   unsigned int planemask, int trans)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SetupForScreenToScreenCopy");
  	DEBUG((VERBLEV, "xdir=%d ydir=%d rop=%02X trans=%08X\n", xdir, ydir,
  			rop, trans));
  
  	pSmi->AccelCmd = XAACopyROP[rop]
  				   | SMI_BITBLT
  				   | SMI_START_ENGINE;
  
  	if ((xdir == -1) || (ydir == -1))
  	{
  		pSmi->AccelCmd |= SMI_RIGHT_TO_LEFT;
  	}
  
  	if (trans != -1)
  	{
  		pSmi->AccelCmd |= SMI_TRANSPARENT_SRC | SMI_TRANSPARENT_PXL;
  		WaitQueue(1);
  		WRITE_DPR(pSmi, 0x20, trans);
  	}
  
  	if (pSmi->ClipTurnedOn)
  	{
  		WaitQueue(1);
  		WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft);
  		pSmi->ClipTurnedOn = FALSE;
  	}
  
  	LEAVE_PROC("SMI_SetupForScreenToScreenCopy");
  }
  
  static void
  SMI_SubsequentScreenToScreenCopy(ScrnInfoPtr pScrn, int x1, int y1, int x2,
  								 int y2, int w, int h)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SubsequentScreenToScreenCopy");
  	DEBUG((VERBLEV, "x1=%d y1=%d x2=%d y2=%d w=%d h=%d\n", x1, y1, x2, y2, w,
  			h));
  
  	if (pSmi->AccelCmd & SMI_RIGHT_TO_LEFT)
  	{
  		x1 += w - 1;
  		y1 += h - 1;
  		x2 += w - 1;
  		y2 += h - 1;
  	}
  
  	if (pScrn->bitsPerPixel == 24)
  	{
  		x1 *= 3;
  		x2 *= 3;
  		w  *= 3;
  
  		if (pSmi->Chipset == SMI_LYNX)
  		{
  			y1 *= 3;
  			y2 *= 3;
  		}
  
  		if (pSmi->AccelCmd & SMI_RIGHT_TO_LEFT)
  		{
  			x1 += 2;
  			x2 += 2;
  		}
  	}
  
  	WaitQueue(4);
  	WRITE_DPR(pSmi, 0x00, (x1 << 16) + (y1 & 0xFFFF));
  	WRITE_DPR(pSmi, 0x04, (x2 << 16) + (y2 & 0xFFFF));
  	WRITE_DPR(pSmi, 0x08, (w  << 16) + (h  & 0xFFFF));
  	WRITE_DPR(pSmi, 0x0C, pSmi->AccelCmd);
  
  	LEAVE_PROC("SMI_SubsequentScreenToScreenCopy");
  }
  
  /******************************************************************************/
  /*								   Solid Fills								  */
  /******************************************************************************/
  
  static void
  SMI_SetupForSolidFill(ScrnInfoPtr pScrn, int color, int rop,
  					  unsigned int planemask)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SetupForSolidFill");
  	DEBUG((VERBLEV, "color=%08X rop=%02X\n", color, rop));
  
  	pSmi->AccelCmd = XAAPatternROP[rop]
  				   | SMI_BITBLT
  				   | SMI_START_ENGINE;
  
  	if (pSmi->ClipTurnedOn)
  	{
  		WaitQueue(4);
  		WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft);
  		pSmi->ClipTurnedOn = FALSE;
  	}
  	else
  	{
  		WaitQueue(3);
  	}
  	WRITE_DPR(pSmi, 0x14, color);
  	WRITE_DPR(pSmi, 0x34, 0xFFFFFFFF);
  	WRITE_DPR(pSmi, 0x38, 0xFFFFFFFF);
  
  	LEAVE_PROC("SMI_SetupForSolidFill");
  }
  
  void
  SMI_SubsequentSolidFillRect(ScrnInfoPtr pScrn, int x, int y, int w, int h)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SubsequentSolidFillRect");
  	DEBUG((VERBLEV, "x=%d y=%d w=%d h=%d\n", x, y, w, h));
  
  	if (x < 0) x = 0;
  	if (y < 0) y = 0;
  
  	if (pScrn->bitsPerPixel == 24)
  	{
  		x *= 3;
  		w *= 3;
  
  		if (pSmi->Chipset == SMI_LYNX)
  		{
  			y *= 3;
  		}
  	}
  
  	WaitQueue(3);
  	WRITE_DPR(pSmi, 0x04, (x << 16) | (y & 0xFFFF));
  	WRITE_DPR(pSmi, 0x08, (w << 16) | (h & 0xFFFF));
  	WRITE_DPR(pSmi, 0x0C, pSmi->AccelCmd);
  
  	LEAVE_PROC("SMI_SubsequentSolidFillRect");
  }
  
  /******************************************************************************/
  /*								   Solid Lines								  */
  /******************************************************************************/
  
  static void
  SMI_SubsequentSolidHorVertLine(ScrnInfoPtr pScrn, int x, int y, int len,
  							   int dir)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  	int w, h;
  
  	ENTER_PROC("SMI_SubsequentSolidHorVertLine");
  	DEBUG((VERBLEV, "x=%d y=%d len=%d dir=%d\n", x, y, len, dir));
  
  	if (dir == DEGREES_0)
  	{
  		w = len;
  		h = 1;
  	}
  	else
  	{
  		w = 1;
  		h = len;
  	}
  
  	if (pScrn->bitsPerPixel == 24)
  	{
  		x *= 3;
  		w *= 3;
  
  		if (pSmi->Chipset == SMI_LYNX)
  		{
  			y *= 3;
  		}
  	}
  
  	WaitQueue(3);
  	WRITE_DPR(pSmi, 0x04, (x << 16) | (y & 0xFFFF));
  	WRITE_DPR(pSmi, 0x08, (w << 16) | (h & 0xFFFF));
  	WRITE_DPR(pSmi, 0x0C, pSmi->AccelCmd);
  
  	LEAVE_PROC("SMI_SubsequentSolidHorVertLine");
  }
  
  /******************************************************************************/
  /*							  Color Expansion Fills							  */
  /******************************************************************************/
  
  static void
  SMI_SetupForCPUToScreenColorExpandFill(ScrnInfoPtr pScrn, int fg, int bg,
  									   int rop, unsigned int planemask)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SetupForCPUToScreenColorExpandFill");
  	DEBUG((VERBLEV, "fg=%08X bg=%08X rop=%02X\n", fg, bg, rop));
  
  	pSmi->AccelCmd = XAACopyROP[rop]
  				   | SMI_HOSTBLT_WRITE
  				   | SMI_SRC_MONOCHROME
  				   | SMI_START_ENGINE;
  
  	if (bg == -1)
  	{
  		pSmi->AccelCmd |= SMI_TRANSPARENT_SRC;
  
  		WaitQueue(3);
  		WRITE_DPR(pSmi, 0x14, fg);
  		WRITE_DPR(pSmi, 0x18, ~fg);
  		WRITE_DPR(pSmi, 0x20, fg);
  	}
  	else
  	{
  		WaitQueue(2);
  		WRITE_DPR(pSmi, 0x14, fg);
  		WRITE_DPR(pSmi, 0x18, bg);
  	}
  
  	LEAVE_PROC("SMI_SetupForCPUToScreenColorExpandFill");
  }
  
  void
  SMI_SubsequentCPUToScreenColorExpandFill(ScrnInfoPtr pScrn, int x, int y, int w,
  										 int h, int skipleft)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SubsequentCPUToScreenColorExpandFill");
  	DEBUG((VERBLEV, "x=%d y=%d w=%d h=%d skipleft=%d\n", x, y, w, h, skipleft));
  
  	if (pScrn->bitsPerPixel == 24)
  	{
  		x        *= 3;
  		w        *= 3;
  		skipleft *= 3;
  
  		if (pSmi->Chipset == SMI_LYNX)
  		{
  			y *= 3;
  		}
  	}
  
  	if (skipleft)
  	{
  		WaitQueue(5);
  		WRITE_DPR(pSmi, 0x2C, (pSmi->ScissorsLeft & 0xFFFF0000)
  				| (x + skipleft) | 0x2000);
  		pSmi->ClipTurnedOn = TRUE;
  	}
  	else
  	{
  		if (pSmi->ClipTurnedOn)
  		{
  			WaitQueue(5);
  			WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft);
  			pSmi->ClipTurnedOn = FALSE;
  		}
  		else
  		{
  			WaitQueue(4);
  		}
  	}
  	WRITE_DPR(pSmi, 0x00, 0);
  	WRITE_DPR(pSmi, 0x04, (x << 16) | (y & 0xFFFF));
  	WRITE_DPR(pSmi, 0x08, (w << 16) | (h & 0xFFFF));
  	WRITE_DPR(pSmi, 0x0C, pSmi->AccelCmd);
  
  	LEAVE_PROC("SMI_SubsequentCPUToScreenColorExpandFill");
  }
  
  /******************************************************************************/
  /*							 8x8 Mono Pattern Fills							  */
  /******************************************************************************/
  
  static void
  SMI_SetupForMono8x8PatternFill(ScrnInfoPtr pScrn, int patx, int paty, int fg,
  							   int bg, int rop, unsigned int planemask)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SetupForMono8x8PatternFill");
  	DEBUG((VERBLEV, "patx=%08X paty=%08X fg=%08X bg=%08X rop=%02X\n", patx,
  			paty, fg, bg, rop));
  
  	pSmi->AccelCmd = XAAPatternROP[rop]
  				   | SMI_BITBLT
  				   | SMI_START_ENGINE;
  
  	if (pSmi->ClipTurnedOn)
  	{
  		WaitQueue(1);
  		WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft);
  		pSmi->ClipTurnedOn = FALSE;
  	}
  
  	if (bg == -1)
  	{
  		WaitQueue(5);
  		WRITE_DPR(pSmi, 0x14, fg);
  		WRITE_DPR(pSmi, 0x18, ~fg);
  		WRITE_DPR(pSmi, 0x20, fg);
  		WRITE_DPR(pSmi, 0x34, patx);
  		WRITE_DPR(pSmi, 0x38, paty);
  	}
  	else
  	{
  		WaitQueue(4);
  		WRITE_DPR(pSmi, 0x14, fg);
  		WRITE_DPR(pSmi, 0x18, bg);
  		WRITE_DPR(pSmi, 0x34, patx);
  		WRITE_DPR(pSmi, 0x38, paty);
  	}
  
  	LEAVE_PROC("SMI_SetupForMono8x8PatternFill");
  }
  
  static void
  SMI_SubsequentMono8x8PatternFillRect(ScrnInfoPtr pScrn, int patx, int paty,
  									 int x, int y, int w, int h)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SubsequentMono8x8PatternFillRect");
  	DEBUG((VERBLEV, "x=%d y=%d w=%d h=%d\n", x, y, w, h));
  
  	if (pScrn->bitsPerPixel == 24)
  	{
  		x *= 3;
  		w *= 3;
  		if (pSmi->Chipset == SMI_LYNX)
  		{
  			y *= 3;
  		}
  	}
  
  	WaitQueue(3);
  	WRITE_DPR(pSmi, 0x04, (x << 16) | (y & 0xFFFF));
  	WRITE_DPR(pSmi, 0x08, (w << 16) | (h & 0xFFFF));
  	WRITE_DPR(pSmi, 0x0C, pSmi->AccelCmd);
  
  	LEAVE_PROC("SMI_SubsequentMono8x8PatternFillRect");
  }
  
  /******************************************************************************/
  /*							 8x8 Color Pattern Fills						  */
  /******************************************************************************/
  
  static void
  SMI_SetupForColor8x8PatternFill(ScrnInfoPtr pScrn, int patx, int paty, int rop,
  								unsigned int planemask, int trans_color)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SetupForColor8x8PatternFill");
  	DEBUG((VERBLEV, "patx=%d paty=%d rop=%02X trans_color=%08X\n", patx, paty,
  			rop, trans_color));
  
  	pSmi->AccelCmd = XAAPatternROP[rop]
  				   | SMI_BITBLT
  				   | SMI_COLOR_PATTERN
  				   | SMI_START_ENGINE;
  
  	if (pScrn->bitsPerPixel <= 16)
  	{
  		/* PDR#950 */
  		CARD8* pattern = pSmi->FBBase
  					   + (patx + paty * pSmi->Stride) * pSmi->Bpp;
  
  		WaitIdleEmpty();
  		WRITE_DPR(pSmi, 0x0C, SMI_BITBLT | SMI_COLOR_PATTERN);
  		memcpy(pSmi->DataPortBase, pattern, 8 * pSmi->Bpp * 8);
  	}
  	else
  	{
  		if (pScrn->bitsPerPixel == 24)
  		{
  			patx *= 3;
  
  			if (pSmi->Chipset == SMI_LYNX)
  			{
  				paty *= 3;
  			}
  		}
  
  		WaitQueue(1);
  		WRITE_DPR(pSmi, 0x00, (patx << 16) | (paty & 0xFFFF));
  	}
  
  	if (trans_color == -1)
  	{
  		pSmi->AccelCmd |= SMI_TRANSPARENT_SRC | SMI_TRANSPARENT_PXL;
  
  		WaitQueue(1);
  		WRITE_DPR(pSmi, 0x20, trans_color);
  	}
  
  	if (pSmi->ClipTurnedOn)
  	{
  		WaitQueue(1);
  		WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft);
  		pSmi->ClipTurnedOn = FALSE;
  	}
  
  	LEAVE_PROC("SMI_SetupForColor8x8PatternFill");
  }
  
  static void
  SMI_SubsequentColor8x8PatternFillRect(ScrnInfoPtr pScrn, int patx, int paty,
  									  int x, int y, int w, int h)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SubsequentColor8x8PatternFillRect");
  	DEBUG((VERBLEV, "x=%d y=%d w=%d h=%d\n", x, y, w, h));
  
  	if (pScrn->bitsPerPixel == 24)
  	{
  		x *= 3;
  		w *= 3;
  
  		if (pSmi->Chipset == SMI_LYNX)
  		{
  			y *= 3;
  		}
  	}
  
  	WaitQueue(3);
  	WRITE_DPR(pSmi, 0x04, (x << 16) | (y & 0xFFFF));
  	WRITE_DPR(pSmi, 0x08, (w << 16) | (h & 0xFFFF));	/* PDR#950 */
  	WRITE_DPR(pSmi, 0x0C, pSmi->AccelCmd);
  
  	LEAVE_PROC("SMI_SubsequentColor8x8PatternFillRect");
  }
  
  #if SMI_USE_IMAGE_WRITES
  /******************************************************************************/
  /*								  Image Writes								  */
  /******************************************************************************/
  
  static void
  SMI_SetupForImageWrite(ScrnInfoPtr pScrn, int rop, unsigned int planemask,
  					   int trans_color, int bpp, int depth)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SetupForImageWrite");
  	DEBUG((VERBLEV, "rop=%02X trans_color=%08X bpp=%d depth=%d\n", rop,
  			trans_color, bpp, depth));
  
  	pSmi->AccelCmd = XAACopyROP[rop]
  				   | SMI_HOSTBLT_WRITE
  				   | SMI_START_ENGINE;
  
  	if (trans_color != -1)
  	{
  		pSmi->AccelCmd |= SMI_TRANSPARENT_SRC | SMI_TRANSPARENT_PXL;
  
  		WaitQueue(1);
  		WRITE_DPR(pSmi, 0x20, trans_color);
  	}
  
  	LEAVE_PROC("SMI_SetupForImageWrite");
  }
  
  static void
  SMI_SubsequentImageWriteRect(ScrnInfoPtr pScrn, int x, int y, int w, int h,
  							 int skipleft)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SubsequentImageWriteRect");
  	DEBUG((VERBLEV, "x=%d y=%d w=%d h=%d skipleft=%d\n", x, y, w, h, skipleft));
  
  	if (pScrn->bitsPerPixel == 24)
  	{
  		x        *= 3;
  		w        *= 3;
  		skipleft *= 3;
  
  		if (pSmi->Chipset == SMI_LYNX)
  		{
  			y *= 3;
  		}
  	}
  
  	if (skipleft)
  	{
  		WaitQueue(5);
  		WRITE_DPR(pSmi, 0x2C, (pSmi->ScissorsLeft & 0xFFFF0000) |
  				(x + skipleft) | 0x2000);
  		pSmi->ClipTurnedOn = TRUE;
  	}
  	else
  	{
  		if (pSmi->ClipTurnedOn)
  		{
  			WaitQueue(5);
  			WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft);
  			pSmi->ClipTurnedOn = FALSE;
  		}
  		else
  		{
  			WaitQueue(4);
  		}
  	}
  	WRITE_DPR(pSmi, 0x00, 0);
  	WRITE_DPR(pSmi, 0x04, (x << 16) | (y & 0xFFFF));
  	WRITE_DPR(pSmi, 0x08, (w << 16) | (h & 0xFFFF));
  	WRITE_DPR(pSmi, 0x0C, pSmi->AccelCmd);
  
  	LEAVE_PROC("SMI_SubsequentImageWriteRect");
  }
  #endif
  
  /******************************************************************************/
  /*									Clipping								  */
  /******************************************************************************/
  
  static void
  SMI_SetClippingRectangle(ScrnInfoPtr pScrn, int left, int top, int right,
  						 int bottom)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_SetClippingRectangle");
  	DEBUG((VERBLEV, "left=%d top=%d right=%d bottom=%d\n", left, top, right,
  			bottom));
  
      /* CZ 26.10.2001: this code prevents offscreen pixmaps being drawn ???
  	left   = max(left, 0);
  	top    = max(top, 0);
  	right  = min(right, pSmi->width);
  	bottom = min(bottom, pSmi->height);
      */
  
  	if (pScrn->bitsPerPixel == 24)
  	{
  		left  *= 3;
  		right *= 3;
  
  		if (pSmi->Chipset == SMI_LYNX)
  		{
  			top    *= 3;
  			bottom *= 3;
  		}
  	}
  
  	if (pSmi->Chipset == SMI_MSOC)
  	{
  		bottom++;
  		right++;
  	}
  
  	pSmi->ScissorsLeft = (top << 16) | (left & 0xFFFF) | 0x2000;
  	pSmi->ScissorsRight = (bottom << 16) | (right & 0xFFFF);
  
  	pSmi->ClipTurnedOn = FALSE;
  
  	WaitQueue(2);
  	WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft);
  	WRITE_DPR(pSmi, 0x30, pSmi->ScissorsRight);
  
  	LEAVE_PROC("SMI_SetClippingRectangle");
  }
  
  static void
  SMI_DisableClipping(ScrnInfoPtr pScrn)
  {
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_DisableClipping");
  
  	pSmi->ScissorsLeft = 0;
  	if (pScrn->bitsPerPixel == 24)
  	{
  		if (pSmi->Chipset == SMI_LYNX)
  		{
  			pSmi->ScissorsRight = ((pSmi->height * 3) << 16)
  								| (pSmi->width * 3);
  		}
  		else
  		{
  			pSmi->ScissorsRight = (pSmi->height << 16) | (pSmi->width * 3);
  		}
  	}
  	else
  	{
  		pSmi->ScissorsRight = (pSmi->height << 16) | pSmi->width;
  	}
  
  	pSmi->ClipTurnedOn = FALSE;
  
  	WaitQueue(2);
  	WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft);
  	WRITE_DPR(pSmi, 0x30, pSmi->ScissorsRight);
  
  	LEAVE_PROC("SMI_DisableClipping");
  }
  
  /******************************************************************************/
  /*									Polylines							 #671 */
  /******************************************************************************/
  
  /*
  
  In order to speed up the "logout" screen in rotated modes, we need to intercept
  the Polylines function. Normally, the polylines are drawn and the shadowFB is
  then sending a request of the bounding rectangle of those poylines. This should
  be okay, if it weren't for the fact that the Gnome logout screen is drawing
  polylines in rectangles and this asks for a rotation of the entire rectangle.
  This is very slow.
  
  To circumvent this slowness, we intercept the ValidatePolylines function and
  override the default "Fallback" Polylines with our own Polylines function. Our
  Polylines function first draws the polylines through the original Fallback
  function and then rotates the lines, line by line. We then set a flag and
  return control to the shadowFB which will try to rotate the bounding rectangle.
  However, the flag has been set and the RefreshArea function does nothing but
  clear the flag so the next Refresh that comes in shoiuld be handled correctly.
  
  All this code improves the speed quite a bit.
  
  */
  
  #define IS_VISIBLE(pWin) \
  ( \
  	   pScrn->vtSema \
  	&& (((WindowPtr) pWin)->visibility != VisibilityFullyObscured) \
  )
  
  #define TRIM_BOX(box, pGC) \
  { \
  	BoxPtr extents = &pGC->pCompositeClip->extents; \
  	if (box.x1 < extents->x1) box.x1 = extents->x1; \
  	if (box.y1 < extents->y1) box.y1 = extents->y1; \
  	if (box.x2 > extents->x2) box.x2 = extents->x2; \
  	if (box.y2 > extents->y2) box.y2 = extents->y2; \
  }
  
  #define TRANSLATE_BOX(box, pDraw) \
  { \
  	box.x1 += pDraw->x; \
  	box.y1 += pDraw->y; \
  	box.x2 += pDraw->x; \
  	box.y2 += pDraw->y; \
  }
  
  #define BOX_NOT_EMPTY(box) \
  	((box.x2 > box.x1) && (box.y2 > box.y1))
  
  static void
  SMI_ValidatePolylines(GCPtr pGC, unsigned long changes, DrawablePtr pDraw)
  {
  	XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
  	SMIPtr pSmi = SMIPTR(infoRec->pScrn);
  
  	ENTER_PROC("SMI_ValidatePolylines");
  
  	pSmi->ValidatePolylines(pGC, changes, pDraw);
  	if (pGC->ops->Polylines == XAAFallbackOps.Polylines)
  	{
  		/* Override the Polylines function with our own Polylines function. */
  		pGC->ops->Polylines = SMI_Polylines;
  	}
  
  	LEAVE_PROC("SMI_ValidatePolylines");
  }
  
  static void
  SMI_Polylines(DrawablePtr pDraw, GCPtr pGC, int mode, int npt,
  			  DDXPointPtr pptInit)
  {
  	XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
  	ScrnInfoPtr pScrn = infoRec->pScrn;
  	SMIPtr pSmi = SMIPTR(pScrn);
  
  	ENTER_PROC("SMI_Polylines");
  
  	/* Call the original Polylines function. */
  	pGC->ops->Polylines = XAAFallbackOps.Polylines;
  	(*pGC->ops->Polylines)(pDraw, pGC, mode, npt, pptInit);
  	pGC->ops->Polylines = SMI_Polylines;
  
  	if (IS_VISIBLE(pDraw) && npt)
  	{
  		/* Allocate a temporary buffer for all segments of the polyline. */
  		BoxPtr pBox = xnfcalloc(sizeof(BoxRec), npt);
  		int extra = pGC->lineWidth >> 1, box;
  
  		if (npt > 1)
  		{
  			/* Adjust the extra space required per polyline segment. */
  			if (pGC->joinStyle == JoinMiter)
  			{
  				extra = 6 * pGC->lineWidth;
  			}
  			else if (pGC->capStyle == CapProjecting)
  			{
  				extra = pGC->lineWidth;
  			}
  		}
  
  		for (box = 0; --npt;)
  		{
  			/* Setup the bounding box for one polyline segment. */
  			pBox[box].x1 = pptInit->x;
  			pBox[box].y1 = pptInit->y;
  			pptInit++;
  			pBox[box].x2 = pptInit->x;
  			pBox[box].y2 = pptInit->y;
  			if (mode == CoordModePrevious)
  			{
  				pBox[box].x2 += pBox[box].x1;
  				pBox[box].y2 += pBox[box].y1;
  			}
  
  			/* Sort coordinates. */
  			if (pBox[box].x1 > pBox[box].x2)
  			{
  				int tmp = pBox[box].x1;
  				pBox[box].x1 = pBox[box].x2;
  				pBox[box].x2 = tmp;
  			}
  			if (pBox[box].y1 > pBox[box].y2)
  			{
  				int tmp = pBox[box].y1;
  				pBox[box].y1 = pBox[box].y2;
  				pBox[box].y2 = tmp;
  			}
  
  			/* Add extra space required for each polyline segment. */
  			pBox[box].x1 -= extra;
  			pBox[box].y1 -= extra;
  			pBox[box].x2 += extra + 1;
  			pBox[box].y2 += extra + 1;
  
  			/* See if we need to draw this polyline segment. */
  			TRANSLATE_BOX(pBox[box], pDraw);
  			TRIM_BOX(pBox[box], pGC);
  			if (BOX_NOT_EMPTY(pBox[box]))
  			{
  				box++;
  			}
  		}
  
  		if (box)
  		{
  			/* Refresh all polyline segments now. */
  			if (pSmi->Chipset == SMI_COUGAR3DR)
  			{
  				SMI_RefreshArea730(pScrn, box, pBox);
  			}
  			else
  			{
  				SMI_RefreshArea(pScrn, box, pBox);
  			}
  		}
  
  		/* Free the temporary buffer. */
  		xfree(pBox);
  	}
  
  	pSmi->polyLines = TRUE;
  	LEAVE_PROC("SMI_Polylines");
  }
  