path: root/hw/kdrive/i810/i810draw.c

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to whom the Software is furnished to do so, provided that the above
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the Software and that both the above copyright notice(s) and this
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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/* Hardware accelerated drawing for KDrive i810 driver.
   Author: Pontus Lidman <pontus.lidman@nokia.com>
*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "kdrive.h"
#include "kaa.h"
#ifdef XV
#include "kxv.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	"dixfontstr.h"
#include	"fb.h"
#include	"migc.h"
#include	"miline.h"
#include	"picturestr.h"

#define NUM_STACK_RECTS	1024

i810ScreenInfo    *accel_i810s;

static int
i810WaitLpRing(i810ScreenInfo *i810s, int n, int timeout_millis)
{
    i810CardInfo *i810c = i810s->i810c;
    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(i810c); 
	 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;
}

static void
i810Sync(i810ScreenInfo *i810s) 
{
    i810CardInfo *i810c = i810s->i810c;
    LP_RING_LOCALS;

    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(i810s, i810c->LpRing.mem.Size - 8, 0);

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

static void
i810WaitMarker(ScreenPtr pScreen, int marker)
{
    KdScreenPriv(pScreen);
    i810ScreenInfo(pScreenPriv);

    i810Sync(i810s);
}

#if 0
static void
i810EmitInvarientState(ScreenPtr pScreen)
{
    KdScreenPriv(pScreen);
    i810CardInfo(pScreenPriv);
    i810ScreenInfo(pScreenPriv);
    LP_RING_LOCALS;

    BEGIN_LP_RING( 10 );

    OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE );
    OUT_RING( GFX_CMD_CONTEXT_SEL | CS_UPDATE_USE | CS_USE_CTX0 );
    OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
    OUT_RING( 0 );


    OUT_RING( GFX_OP_COLOR_CHROMA_KEY );
    OUT_RING( CC1_UPDATE_KILL_WRITE | 
              CC1_DISABLE_KILL_WRITE | 
              CC1_UPDATE_COLOR_IDX |
              CC1_UPDATE_CHROMA_LOW |
              CC1_UPDATE_CHROMA_HI |
              0);
    OUT_RING( 0 );
    OUT_RING( 0 );

    /* No depth buffer in KDrive yet */
    /*     OUT_RING( CMD_OP_Z_BUFFER_INFO ); */
    /*     OUT_RING( pI810->DepthBuffer.Start | pI810->auxPitchBits); */

    ADVANCE_LP_RING();
}
#endif

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 Bool
i810PrepareSolid(PixmapPtr pPix, int alu, Pixel pm, Pixel fg)
{
    KdScreenPriv(pPix->drawable.pScreen);
    i810ScreenInfo(pScreenPriv);
    i810CardInfo(pScreenPriv);

    if (I810_DEBUG & DEBUG_VERBOSE_ACCEL)
      ErrorF( "i810PrepareSolid color: %x rop: %x mask: %x\n", 
	      fg, alu, pm);

    /* Color blit, p166 */
    i810c->BR[13] = BR13_SOLID_PATTERN | 
		    (i810PatternRop[alu] << 16) |
		    (pPix->drawable.pScreen->width * i810c->cpp);
    i810c->BR[16] = fg;

    accel_i810s = i810s;

    return TRUE;
}

static void
i810Solid(int x1, int y1, int x2, int y2)
{
    I810ScreenInfo *i810s = accel_i810s;
    I810CardInfo *i810c = i810s->i810c;
    LP_RING_LOCALS;

    if (I810_DEBUG & DEBUG_VERBOSE_ACCEL)
	ErrorF( "i810SubsequentFillRectSolid %d,%d %d,%d\n", x1, y1, x2, y2);

    BEGIN_LP_RING(6);

    OUT_RING( BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3 );
    OUT_RING( i810c->BR[13] );
    OUT_RING( ((y2 - y1) << 16) | ((x2 - x1) * i810c->cpp));
    OUT_RING( i810c->bufferOffset + y1 * i810s->pitch + x1 * i810c->cpp );

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

    ADVANCE_LP_RING();
}

static void
i810DoneSolid(void)
{
}

static Bool
i810PrepareCopy(PixmapPtr pSrc, PixmapPtr pDst, int dx, int dy, int alu, Pixel pm)
{
	return FALSE;
}

static void 
i810RefreshRing(i810CardInfo *i810c)
{
    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;
}


static void
i810SetRingRegs(i810CardInfo *i810c)
{
   unsigned int itemp;

   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)
{
    KdScreenPriv(pScreen);
    i810ScreenInfo(pScreenPriv);
    i810CardInfo(pScreenPriv);

    memset(&i810s->kaa, 0, sizeof(KaaScreenInfoRec));
    i810s->kaa.waitMarker	= i810WaitMarker;
    i810s->kaa.PrepareSolid	= i810PrepareSolid;
    i810s->kaa.Solid		= i810Solid;
    i810s->kaa.DoneSolid	= i810DoneSolid;
    i810s->kaa.PrepareCopy	= i810PrepareCopy;
    i810s->kaa.Copy		= NULL;
    i810s->kaa.DoneCopy		= NULL;

    i810s->pitch = pScreen->width * i810c->cpp;

    return FALSE;
}

void
i810EnableAccel(ScreenPtr pScreen)
{
    KdScreenPriv(pScreen);
    i810CardInfo(pScreenPriv);

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

    i810SetRingRegs(i810c);

    kaaMarkSync (pScreen);
}


void
i810DisableAccel(ScreenPtr pScreen)
{
    KdScreenPriv(pScreen);
    i810CardInfo(pScreenPriv);
    i810ScreenInfo(pScreenPriv);
    
    i810RefreshRing(i810c);
    i810Sync(i810s);
}

void
i810FiniAccel(ScreenPtr pScreen)
{
}