radeon_exa_funcs.c

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#endif
    w *= bpp / 8;
    dst += (x * bpp / 8) + (y * dst_pitch);

    while (h--) {
	memcpy(dst, src, w);
	src += src_pitch;
	dst += dst_pitch;
    }

#if X_BYTE_ORDER == X_BIG_ENDIAN
    /* restore byte swapping */
    OUTREG(RADEON_SURFACE_CNTL, info->ModeReg.surface_cntl);
#endif

    return TRUE;
}

#ifdef ACCEL_CP
/* Emit blit with arbitrary source and destination offsets and pitches */
static void
RADEONBlitChunk(ScrnInfoPtr pScrn, CARD32 datatype, CARD32 src_pitch_offset,
		CARD32 dst_pitch_offset, int srcX, int srcY, int dstX, int dstY,
		int w, int h)
{
    RADEONInfoPtr info = RADEONPTR(pScrn);
    ACCEL_PREAMBLE();

    BEGIN_ACCEL(6);
    OUT_ACCEL_REG(RADEON_DP_GUI_MASTER_CNTL,
		  RADEON_GMC_DST_PITCH_OFFSET_CNTL |
		  RADEON_GMC_SRC_PITCH_OFFSET_CNTL |
		  RADEON_GMC_BRUSH_NONE |
		  (datatype << 8) |
		  RADEON_GMC_SRC_DATATYPE_COLOR |
		  RADEON_ROP3_S |
		  RADEON_DP_SRC_SOURCE_MEMORY |
		  RADEON_GMC_CLR_CMP_CNTL_DIS |
		  RADEON_GMC_WR_MSK_DIS);
    OUT_ACCEL_REG(RADEON_SRC_PITCH_OFFSET, src_pitch_offset);
    OUT_ACCEL_REG(RADEON_DST_PITCH_OFFSET, dst_pitch_offset);
    OUT_ACCEL_REG(RADEON_SRC_Y_X, (srcY << 16) | srcX);
    OUT_ACCEL_REG(RADEON_DST_Y_X, (dstY << 16) | dstX);
    OUT_ACCEL_REG(RADEON_DST_HEIGHT_WIDTH, (h << 16) | w);
    FINISH_ACCEL();
}
#endif

static Bool
FUNC_NAME(RADEONDownloadFromScreen)(PixmapPtr pSrc, int x, int y, int w, int h,
				    char *dst, int dst_pitch)
{
#if defined(ACCEL_CP) || X_BYTE_ORDER == X_BIG_ENDIAN
    RINFO_FROM_SCREEN(pSrc->drawable.pScreen);
#endif
#if X_BYTE_ORDER == X_BIG_ENDIAN
    unsigned char *RADEONMMIO = info->MMIO;
    unsigned int swapper = info->ModeReg.surface_cntl &
	    ~(RADEON_NONSURF_AP0_SWP_32BPP | RADEON_NONSURF_AP1_SWP_32BPP |
	      RADEON_NONSURF_AP0_SWP_16BPP | RADEON_NONSURF_AP1_SWP_16BPP);
#endif
    CARD8	  *src	     = pSrc->devPrivate.ptr;
    int		   src_pitch = exaGetPixmapPitch(pSrc);
    int		   bpp	     = pSrc->drawable.bitsPerPixel;
#ifdef ACCEL_CP
    CARD32 datatype, src_pitch_offset, scratch_pitch = (w * bpp/8 + 63) & ~63, scratch_off = 0;
    drmBufPtr scratch;
#endif

    TRACE;

#ifdef ACCEL_CP
    /*
     * Try to accelerate download. Use an indirect buffer as scratch space,
     * blitting the bits to one half while copying them out of the other one and
     * then swapping the halves.
     */
    if (info->accelDFS && bpp != 24 && RADEONGetDatatypeBpp(bpp, &datatype) &&
	RADEONGetPixmapOffsetPitch(pSrc, &src_pitch_offset) &&
	(scratch = RADEONCPGetBuffer(pScrn)))
    {
	int swap = RADEON_HOST_DATA_SWAP_NONE, wpass = w * bpp / 8;
	int hpass = min(h, scratch->total/2 / scratch_pitch);
	CARD32 scratch_pitch_offset = scratch_pitch << 16
				    | (info->gartLocation + info->bufStart
				       + scratch->idx * scratch->total) >> 10;
	drmRadeonIndirect indirect;
	ACCEL_PREAMBLE();

	RADEON_SWITCH_TO_2D();

	/* Kick the first blit as early as possible */
	RADEONBlitChunk(pScrn, datatype, src_pitch_offset, scratch_pitch_offset,
			x, y, 0, 0, w, hpass);
	FLUSH_RING();

#if X_BYTE_ORDER == X_BIG_ENDIAN
	switch (bpp) {
	case 16:
	  swap = RADEON_HOST_DATA_SWAP_16BIT;
	  break;
	case 32:
	  swap = RADEON_HOST_DATA_SWAP_32BIT;
	  break;
	}
#endif

	while (h) {
	    int oldhpass = hpass, i = 0;

	    src = (CARD8*)scratch->address + scratch_off;

	    y += oldhpass;
	    h -= oldhpass;
	    hpass = min(h, scratch->total/2 / scratch_pitch);

	    /* Prepare next blit if anything's left */
	    if (hpass) {
		scratch_off = scratch->total/2 - scratch_off;
		RADEONBlitChunk(pScrn, datatype, src_pitch_offset, scratch_pitch_offset + (scratch_off >> 10),
				x, y, 0, 0, w, hpass);
	    }

	    /*
	     * Wait for previous blit to complete.
	     *
	     * XXX: Doing here essentially the same things this ioctl does in
	     * the DRM results in corruption with 'small' transfers, apparently
	     * because the data doesn't actually land in system RAM before the
	     * memcpy. I suspect the ioctl helps mostly due to its latency; what
	     * we'd really need is a way to reliably wait for the host interface
	     * to be done with pushing the data to the host.
	     */
	    while ((drmCommandNone(info->drmFD, DRM_RADEON_CP_IDLE) == -EBUSY)
		   && (i++ < RADEON_TIMEOUT))
		;

	    /* Kick next blit */
	    if (hpass)
		FLUSH_RING();

	    /* Copy out data from previous blit */
	    if (wpass == scratch_pitch && wpass == dst_pitch) {
		RADEONCopySwap((CARD8*)dst, src, wpass * oldhpass, swap);
		dst += dst_pitch * oldhpass;
	    } else while (oldhpass--) {
		RADEONCopySwap((CARD8*)dst, src, wpass, swap);
		src += scratch_pitch;
		dst += dst_pitch;
	    }
	}

	indirect.idx = scratch->idx;
	indirect.start = indirect.end = 0;
	indirect.discard = 1;

	drmCommandWriteRead(info->drmFD, DRM_RADEON_INDIRECT,
			    &indirect, sizeof(drmRadeonIndirect));

	return TRUE;
    }
#endif

    /* Can't accelerate download */
    exaWaitSync(pSrc->drawable.pScreen);

#if X_BYTE_ORDER == X_BIG_ENDIAN
    switch(bpp) {
    case 15:
    case 16:
	swapper |= RADEON_NONSURF_AP0_SWP_16BPP
		|  RADEON_NONSURF_AP1_SWP_16BPP;
	break;
    case 24:
    case 32:
	swapper |= RADEON_NONSURF_AP0_SWP_32BPP
		|  RADEON_NONSURF_AP1_SWP_32BPP;
	break;
    }
    OUTREG(RADEON_SURFACE_CNTL, swapper);
#endif

    src += (x * bpp / 8) + (y * src_pitch);
    w *= bpp / 8;

    while (h--) {
	memcpy(dst, src, w);
	src += src_pitch;
	dst += dst_pitch;
    }

#if X_BYTE_ORDER == X_BIG_ENDIAN
    /* restore byte swapping */
    OUTREG(RADEON_SURFACE_CNTL, info->ModeReg.surface_cntl);
#endif

    return TRUE;
}

Bool FUNC_NAME(RADEONDrawInit)(ScreenPtr pScreen)
{
    RINFO_FROM_SCREEN(pScreen);

    if (info->exa == NULL) {
	xf86DrvMsg(pScreen->myNum, X_ERROR, "Memory map not set up\n");
	return FALSE;
    }

    info->exa->exa_major = 2;
    info->exa->exa_minor = 0;

    info->exa->PrepareSolid = FUNC_NAME(RADEONPrepareSolid);
    info->exa->Solid = FUNC_NAME(RADEONSolid);
    info->exa->DoneSolid = FUNC_NAME(RADEONDoneSolid);

    info->exa->PrepareCopy = FUNC_NAME(RADEONPrepareCopy);
    info->exa->Copy = FUNC_NAME(RADEONCopy);
    info->exa->DoneCopy = FUNC_NAME(RADEONDoneCopy);

    info->exa->WaitMarker = FUNC_NAME(RADEONSync);
    info->exa->UploadToScreen = FUNC_NAME(RADEONUploadToScreen);
    info->exa->DownloadFromScreen = FUNC_NAME(RADEONDownloadFromScreen);

#if X_BYTE_ORDER == X_BIG_ENDIAN
    info->exa->PrepareAccess = RADEONPrepareAccess;
    info->exa->FinishAccess = RADEONFinishAccess;
#endif /* X_BYTE_ORDER == X_BIG_ENDIAN */

    info->exa->flags = EXA_OFFSCREEN_PIXMAPS;
    info->exa->pixmapOffsetAlign = RADEON_BUFFER_ALIGN + 1;
    info->exa->pixmapPitchAlign = 64;

    info->exa->maxX = 2047;
    info->exa->maxY = 2047;

#ifdef RENDER
    if (info->RenderAccel) {
	if (info->ChipFamily >= CHIP_FAMILY_R300) {
	    xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Render acceleration "
			       "unsupported on R300 type cards and newer.\n");
	} else if ((info->ChipFamily == CHIP_FAMILY_RV250) || 
		   (info->ChipFamily == CHIP_FAMILY_RV280) || 
		   (info->ChipFamily == CHIP_FAMILY_RS300) || 
		   (info->ChipFamily == CHIP_FAMILY_R200)) {
		xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Render acceleration "
			       "enabled for R200 type cards.\n");
		info->exa->CheckComposite = R200CheckComposite;
		info->exa->PrepareComposite =
		    FUNC_NAME(R200PrepareComposite);
		info->exa->Composite = FUNC_NAME(RadeonComposite);
		info->exa->DoneComposite = RadeonDoneComposite;
	} else {
		xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Render acceleration "
			       "enabled for R100 type cards.\n");
		info->exa->CheckComposite = R100CheckComposite;
		info->exa->PrepareComposite =
		    FUNC_NAME(R100PrepareComposite);
		info->exa->Composite = FUNC_NAME(RadeonComposite);
		info->exa->DoneComposite = RadeonDoneComposite;
	}
    }
#endif

    RADEONEngineInit(pScrn);

    if (!exaDriverInit(pScreen, info->exa)) {
	xfree(info->exa);
	return FALSE;
    }
    exaMarkSync(pScreen);

    return TRUE;
}

#undef FUNC_NAME