xsrc/xfree/xc/programs/Xserver/hw/tinyx/i810/i810draw.c

/* COPYRIGHT AND PERMISSION NOTICE

Copyright (c) 2000, 2001 Nokia Home Communications

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/*
 * Copyright (c) 2004 by 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
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 * to the following conditions:
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 *       notice, this list of conditions, and the following disclaimer.
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 *       in the documentation and/or other materials provided with the
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 *
 *   3.  The end-user documentation included with the redistribution,
 *       if any, must include the following acknowledgment: "This product
 *       includes software developed by The XFree86 Project, Inc
 *       (http://www.xfree86.org/) and its contributors", in the same
 *       place and form as other third-party acknowledgments.  Alternately,
 *       this acknowledgment may appear in the software itself, in the
 *       same form and location as other such third-party acknowledgments.
 *
 *   4.  Except as contained in this notice, the name of The XFree86
 *       Project, Inc 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, Inc.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * IN NO EVENT SHALL THE XFREE86 PROJECT, INC OR ITS CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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/* Hardware accelerated drawing for TinyX i810 driver.
   Author: Pontus Lidman <pontus.lidman@nokia.com>
*/

#include "tinyx.h"
#ifdef XV
#include "txxv.h"
#endif
#include "i810.h"
#include "i810_reg.h"

#include	"Xmd.h"
#include	"gcstruct.h"
#include	"scrnintstr.h"
#include	"pixmapstr.h"
#include	"regionstr.h"
#include	"mistruct.h"
#include	"fontstruct.h"
#include	"dixfontstr.h"
#include	"fb.h"
#include	"migc.h"
#include	"miline.h"
#include	"picturestr.h"

#define NUM_STACK_RECTS	1024

void
i810Sync( KdScreenInfo *screen );
int
i810WaitLpRing( KdScreenInfo *screen, int n, int timeout_millis );

static unsigned int i810PatternRop[16] = {
    0x00, /* GXclear      */
    0xA0, /* GXand        */
    0x50, /* GXandReverse */
    0xF0, /* GXcopy       */
    0x0A, /* GXandInvert  */
    0xAA, /* GXnoop       */
    0x5A, /* GXxor        */
    0xFA, /* GXor         */
    0x05, /* GXnor        */
    0xA5, /* GXequiv      */
    0x55, /* GXinvert     */
    0xF5, /* GXorReverse  */
    0x0F, /* GXcopyInvert */
    0xAF, /* GXorInverted */
    0x5F, /* GXnand       */
    0xFF  /* GXset        */
};

static void 
i810SetupForSolidFill(KdScreenInfo *screen, int color, int rop,
		      unsigned int planemask)
{
    KdCardInfo	    *card = screen->card;
    I810CardInfo    *i810c = (I810CardInfo *) card->driver;

   if (I810_DEBUG & DEBUG_VERBOSE_ACCEL)
      ErrorF( "i810SetupForFillRectSolid color: %x rop: %x mask: %x\n", 
	      color, rop, planemask);

   /* Color blit, p166 */
   i810c->BR[13] = (BR13_SOLID_PATTERN | 
		    (i810PatternRop[rop] << 16) |
		    (screen->width * i810c->cpp));
   i810c->BR[16] = color;
}


static void 
i810SubsequentSolidFillRect(KdScreenInfo *screen, int x, int y, int w, int h)
{
    KdCardInfo	    *card = screen->card;
    I810CardInfo    *i810c = (I810CardInfo *) card->driver;

   if (I810_DEBUG & DEBUG_VERBOSE_ACCEL)
      ErrorF( "i810SubsequentFillRectSolid %d,%d %dx%d\n",
	      x,y,w,h);

   {   
      BEGIN_LP_RING(6);
   
      OUT_RING( BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3 );
      OUT_RING( i810c->BR[13] );
      OUT_RING( (h << 16) | (w * i810c->cpp));
      OUT_RING( i810c->bufferOffset + 
		(y * screen->width + x) * i810c->cpp);

      OUT_RING( i810c->BR[16]);
      OUT_RING( 0 );		/* pad to quadword */

      ADVANCE_LP_RING();
   }
}


static BOOL
i810FillOk (GCPtr pGC)
{
    switch (pGC->fillStyle) {
    case FillSolid:
	return TRUE;
        /* More cases later... */
    }
    return FALSE;
}

void
i810FillBoxSolid (KdScreenInfo *screen, int nBox, BoxPtr pBox, 
                  unsigned long pixel, int alu, unsigned long planemask)
{
    i810SetupForSolidFill(screen, pixel, alu, planemask);
    while (nBox--) 
    {
        i810SubsequentSolidFillRect(screen, pBox->x1, pBox->y1, 
                                    pBox->x2-pBox->x1, pBox->y2-pBox->y1);
	pBox++;
    }
    KdMarkSync(screen->pScreen);
}


static void
i810PolyFillRect (DrawablePtr pDrawable, GCPtr pGC, 
		int nrectFill, xRectangle *prectInit)
{
    xRectangle	    *prect;
    RegionPtr	    prgnClip;
    register BoxPtr pbox;
    register BoxPtr pboxClipped;
    BoxPtr	    pboxClippedBase;
    BoxPtr	    pextent;
    BoxRec	    stackRects[NUM_STACK_RECTS];
    int		    numRects;
    int		    n;
    int		    xorg, yorg;
    KdScreenPriv(pDrawable->pScreen);
    KdScreenInfo *screen = pScreenPriv->screen;
    
    if (!i810FillOk (pGC))
    {
	KdCheckPolyFillRect (pDrawable, pGC, nrectFill, prectInit);
	return;
    }
    prgnClip = fbGetCompositeClip(pGC);
    xorg = pDrawable->x;
    yorg = pDrawable->y;
    
    if (xorg || yorg)
    {
	prect = prectInit;
	n = nrectFill;
	while(n--)
	{
	    prect->x += xorg;
	    prect->y += yorg;
	    prect++;
	}
    }
    
    prect = prectInit;

    numRects = REGION_NUM_RECTS(prgnClip) * nrectFill;
    if (numRects > NUM_STACK_RECTS)
    {
	pboxClippedBase = (BoxPtr)xalloc(numRects * sizeof(BoxRec));
	if (!pboxClippedBase)
	    return;
    }
    else
	pboxClippedBase = stackRects;

    pboxClipped = pboxClippedBase;
	
    if (REGION_NUM_RECTS(prgnClip) == 1)
    {
	int x1, y1, x2, y2, bx2, by2;

	pextent = REGION_RECTS(prgnClip);
	x1 = pextent->x1;
	y1 = pextent->y1;
	x2 = pextent->x2;
	y2 = pextent->y2;
    	while (nrectFill--)
    	{
	    if ((pboxClipped->x1 = prect->x) < x1)
		pboxClipped->x1 = x1;
    
	    if ((pboxClipped->y1 = prect->y) < y1)
		pboxClipped->y1 = y1;
    
	    bx2 = (int) prect->x + (int) prect->width;
	    if (bx2 > x2)
		bx2 = x2;
	    pboxClipped->x2 = bx2;
    
	    by2 = (int) prect->y + (int) prect->height;
	    if (by2 > y2)
		by2 = y2;
	    pboxClipped->y2 = by2;

	    prect++;
	    if ((pboxClipped->x1 < pboxClipped->x2) &&
		(pboxClipped->y1 < pboxClipped->y2))
	    {
		pboxClipped++;
	    }
    	}
    }
    else
    {
	int x1, y1, x2, y2, bx2, by2;

	pextent = REGION_EXTENTS(pGC->pScreen, prgnClip);
	x1 = pextent->x1;
	y1 = pextent->y1;
	x2 = pextent->x2;
	y2 = pextent->y2;
    	while (nrectFill--)
    	{
	    BoxRec box;
    
	    if ((box.x1 = prect->x) < x1)
		box.x1 = x1;
    
	    if ((box.y1 = prect->y) < y1)
		box.y1 = y1;
    
	    bx2 = (int) prect->x + (int) prect->width;
	    if (bx2 > x2)
		bx2 = x2;
	    box.x2 = bx2;
    
	    by2 = (int) prect->y + (int) prect->height;
	    if (by2 > y2)
		by2 = y2;
	    box.y2 = by2;
    
	    prect++;
    
	    if ((box.x1 >= box.x2) || (box.y1 >= box.y2))
	    	continue;
    
	    n = REGION_NUM_RECTS (prgnClip);
	    pbox = REGION_RECTS(prgnClip);
    
	    /* clip the rectangle to each box in the clip region
	       this is logically equivalent to calling Intersect()
	    */
	    while(n--)
	    {
		pboxClipped->x1 = max(box.x1, pbox->x1);
		pboxClipped->y1 = max(box.y1, pbox->y1);
		pboxClipped->x2 = min(box.x2, pbox->x2);
		pboxClipped->y2 = min(box.y2, pbox->y2);
		pbox++;

		/* see if clipping left anything */
		if(pboxClipped->x1 < pboxClipped->x2 && 
		   pboxClipped->y1 < pboxClipped->y2)
		{
		    pboxClipped++;
		}
	    }
    	}
    }
    if (pboxClipped != pboxClippedBase)
    {
	switch (pGC->fillStyle) {
	case FillSolid:
	    i810FillBoxSolid(screen,
                             pboxClipped-pboxClippedBase, pboxClippedBase,
                             pGC->fgPixel, pGC->alu, pGC->planemask);
	    break;
            /* More cases later... */
	}
    }
    if (pboxClippedBase != stackRects)
    	xfree(pboxClippedBase);
}

static void 
i810RefreshRing(KdScreenInfo *screen)
{
    KdCardInfo	    *card = screen->card;
    I810CardInfo    *i810c = (I810CardInfo *) card->driver;
      
   i810c->LpRing.head = INREG(LP_RING + RING_HEAD) & HEAD_ADDR;
   i810c->LpRing.tail = INREG(LP_RING + RING_TAIL);
   i810c->LpRing.space = i810c->LpRing.head - (i810c->LpRing.tail+8);
   if (i810c->LpRing.space < 0) 
      i810c->LpRing.space += i810c->LpRing.mem.Size;

   i810c->NeedToSync = TRUE;
}

int
i810WaitLpRing( KdScreenInfo *screen, int n, int timeout_millis )
{
    KdCardInfo	    *card = screen->card;
    I810CardInfo    *i810c = (I810CardInfo *) card->driver;
    I810RingBuffer *ring = &(i810c->LpRing);
    int iters = 0;
    int start = 0;
    int now = 0;
    int last_head = 0;
    int first = 0;
    
    /* If your system hasn't moved the head pointer in 2 seconds, I'm going to
    * call it crashed.
    */
   if (timeout_millis == 0)
      timeout_millis = 2000;

   if (I810_DEBUG) {
      fprintf(stderr, "i810WaitLpRing %d\n", n); 
      first = GetTimeInMillis();
   }

   while (ring->space < n) 
   {
      int i;

      ring->head = INREG(LP_RING + RING_HEAD) & HEAD_ADDR;
      ring->space = ring->head - (ring->tail+8);

      if (ring->space < 0) 
	 ring->space += ring->mem.Size;
      
      iters++;
      now = GetTimeInMillis();
      if ( start == 0 || now < start || ring->head != last_head) {
	 if (I810_DEBUG)
	    if (now > start) 
	       fprintf(stderr, "space: %d wanted %d\n", ring->space, n ); 
	 start = now;
	 last_head = ring->head;
      } else if ( now - start > timeout_millis ) { 

	 i810PrintErrorState( screen->card ); 
	 fprintf(stderr, "space: %d wanted %d\n", ring->space, n );
	 FatalError("lockup\n"); 
      }

      for (i = 0 ; i < 2000 ; i++)
	 ;
   }

   if (I810_DEBUG)
   {
      now = GetTimeInMillis();
      if (now - first) {
	 fprintf(stderr,"Elapsed %d ms\n", now - first);
	 fprintf(stderr, "space: %d wanted %d\n", ring->space, n );
      }
   }

   return iters;
}

void
i810Sync( KdScreenInfo *screen ) 
{
    KdCardInfo	    *card = screen->card;
    I810CardInfo    *i810c = card->driver;

   if (I810_DEBUG)
      fprintf(stderr, "i810Sync\n");
   
   /* Send a flush instruction and then wait till the ring is empty.
    * This is stronger than waiting for the blitter to finish as it also
    * flushes the internal graphics caches.
    */
   {
       BEGIN_LP_RING(2);   
       OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE );
       OUT_RING( 0 );		/* pad to quadword */
       ADVANCE_LP_RING();
   }

   i810WaitLpRing(screen, i810c->LpRing.mem.Size - 8, 0 );	

   i810c->LpRing.space = i810c->LpRing.mem.Size - 8;			
   i810c->nextColorExpandBuf = 0;
}

static const GCOps	i810Ops = {
    KdCheckFillSpans,
    KdCheckSetSpans,
    KdCheckPutImage,
    KdCheckCopyArea,
    KdCheckCopyPlane,
    KdCheckPolyPoint,
    KdCheckPolylines,
    KdCheckPolySegment,
    miPolyRectangle,
    KdCheckPolyArc,
    miFillPolygon,
    i810PolyFillRect,
    miPolyFillArc,
    miPolyText8,
    miPolyText16,
    miImageText8,
    miImageText16,
    KdCheckImageGlyphBlt,
    KdCheckPolyGlyphBlt,
    KdCheckPushPixels,
#ifdef NEED_LINEHELPER
    ,NULL
#endif
};

static void
i810ValidateGC (GCPtr pGC, Mask changes, DrawablePtr pDrawable)
{
    fbValidateGC (pGC, changes, pDrawable);
    
    if (pDrawable->type == DRAWABLE_WINDOW)
	pGC->ops = (GCOps *) &i810Ops;
    else
	pGC->ops = (GCOps *) &kdAsyncPixmapGCOps;
}

GCFuncs	i810GCFuncs = {
    i810ValidateGC,
    miChangeGC,
    miCopyGC,
    miDestroyGC,
    miChangeClip,
    miDestroyClip,
    miCopyClip
};

static int
i810CreateGC (GCPtr pGC)
{
    if (!fbCreateGC (pGC))
	return FALSE;

    if (pGC->depth != 1)
	pGC->funcs = &i810GCFuncs;
    
    return TRUE;
}

static void
i810SetRingRegs( KdScreenInfo *screen ) {
   unsigned int itemp;

   KdCardInfo	    *card = screen->card;
   I810CardInfo    *i810c = (I810CardInfo *) card->driver;

   OUTREG(LP_RING + RING_TAIL, 0 );
   OUTREG(LP_RING + RING_HEAD, 0 );

   itemp = INREG(LP_RING + RING_START);
   itemp &= ~(START_ADDR);
   itemp |= i810c->LpRing.mem.Start;
   OUTREG(LP_RING + RING_START, itemp );

   itemp = INREG(LP_RING + RING_LEN);
   itemp &= ~(RING_NR_PAGES | RING_REPORT_MASK | RING_VALID_MASK);
   itemp |= ((i810c->LpRing.mem.Size-4096) | RING_NO_REPORT | RING_VALID);
   OUTREG(LP_RING + RING_LEN, itemp );
}

Bool
i810InitAccel(ScreenPtr pScreen)
{

/*     fprintf(stderr,"i810InitAccel\n"); */

    /*
     * Hook up asynchronous drawing
     */
    KdScreenInitAsync (pScreen);
    /*
     * Replace various fb screen functions
     */
    pScreen->CreateGC = i810CreateGC;

    return TRUE;
}

void
i810EnableAccel(ScreenPtr pScreen)
{

    KdScreenPriv(pScreen);
    KdScreenInfo    *screen = pScreenPriv->screen;
    KdCardInfo	    *card = screen->card;
    I810CardInfo    *i810c = (I810CardInfo *) card->driver;

/*     fprintf(stderr,"i810EnableAccel\n"); */

    if (i810c->LpRing.mem.Size == 0) {
        ErrorF("No memory for LpRing!! Acceleration not functional!!\n");
    }

    i810SetRingRegs( screen );

    KdMarkSync (pScreen);
}


void
i810SyncAccel(ScreenPtr pScreen)
{
    KdScreenPriv(pScreen);
    KdScreenInfo    *screen = pScreenPriv->screen;

    i810Sync(screen);
}

void
i810DisableAccel(ScreenPtr pScreen)
{
    KdScreenPriv(pScreen);
    KdScreenInfo    *screen = pScreenPriv->screen;
    
/*     fprintf(stderr,"i810DisableAccel\n"); */
    i810RefreshRing( screen );
    i810Sync( screen );
}

void
i810FiniAccel(ScreenPtr pScreen)
{
/*     fprintf(stderr,"i810FiniAccel\n"); */

}