atiscreen.c

x.org上有关ati系列显卡最新驱动

    /* Re-initialise mi's visual list */
    miClearVisualTypes();

    if ((pATI->depth > 8) && (pATI->DAC == ATI_DAC_INTERNAL))
        VisualMask = TrueColorMask;
    else
        VisualMask = miGetDefaultVisualMask(pATI->depth);

    if (!miSetVisualTypes(pATI->depth, VisualMask, pATI->rgbBits,
                          pScreenInfo->defaultVisual))
        return FALSE;

    if (!miSetPixmapDepths())
        return FALSE;

    pFB = pATI->pMemory;
    pATI->FBPitch = PixmapBytePad(pATI->displayWidth, pATI->depth);
    if (pATI->OptionShadowFB)
    {
        pATI->FBBytesPerPixel = pATI->bitsPerPixel >> 3;
        pATI->FBPitch = PixmapBytePad(pATI->displayWidth, pATI->depth);
        if ((pATI->pShadow = xalloc(pATI->FBPitch * pScreenInfo->virtualY)))
        {
            pFB = pATI->pShadow;
        }
        else
        {
            xf86DrvMsg(pScreenInfo->scrnIndex, X_WARNING,
                "Insufficient virtual memory for shadow frame buffer.\n");
            pATI->OptionShadowFB = FALSE;
        }
    }

#ifdef XF86DRI_DEVEL

    /* Setup DRI after visuals have been established, but before
     * fbScreenInit is called.  fbScreenInit will eventually call the
     * driver's InitGLXVisuals call back.
     */

    /* According to atiregs.h, GTPro (3D Rage Pro) is the first chip type with
     * 3D triangle setup (the VERTEX_* registers)
     */
    if (pATI->Chip < ATI_CHIP_264GTPRO) {
	xf86DrvMsg(iScreen, X_WARNING,
		   "Direct rendering is not supported for ATI chips earlier than "
		   "the ATI 3D Rage Pro.\n");
	pATI->directRenderingEnabled = FALSE;
    } else {
	/* FIXME: When we move to dynamic allocation of back and depth
	 * buffers, we will want to revisit the following check for 3
	 * times the virtual size (or 2.5 times for 24-bit depth) of the screen below.
	 */
	int cpp = pATI->bitsPerPixel >> 3;
	int maxY = pScreenInfo->videoRam * 1024 / (pATI->displayWidth * cpp);
	int requiredY;

	requiredY = pScreenInfo->virtualY * 2     /* front, back buffers */
	    + (pScreenInfo->virtualY * 2 / cpp);  /* depth buffer (always 16-bit) */

	if (!pATI->OptionAccel) {
	    xf86DrvMsg(iScreen, X_WARNING,
		       "Acceleration disabled, not initializing the DRI\n");
	    pATI->directRenderingEnabled = FALSE;
	} else if ( maxY > requiredY ) {
	    pATI->directRenderingEnabled = ATIDRIScreenInit(pScreen);
	} else {
	    xf86DrvMsg(iScreen, X_WARNING,
		       "DRI static buffer allocation failed -- "
		       "need at least %d kB video memory\n",
		       (pScreenInfo->displayWidth * requiredY * cpp ) / 1024);
	    pATI->directRenderingEnabled = FALSE;
	}
    }

#endif /* XF86DRI_DEVEL */

    /* Initialise framebuffer layer */
    switch (pATI->bitsPerPixel)
    {

#ifndef AVOID_CPIO

        case 1:
            pATI->Closeable = xf1bppScreenInit(pScreen, pFB,
                pScreenInfo->virtualX, pScreenInfo->virtualY,
                pScreenInfo->xDpi, pScreenInfo->yDpi, pATI->displayWidth);
            break;

        case 4:
            pATI->Closeable = xf4bppScreenInit(pScreen, pFB,
                pScreenInfo->virtualX, pScreenInfo->virtualY,
                pScreenInfo->xDpi, pScreenInfo->yDpi, pATI->displayWidth);
            break;

#endif /* AVOID_CPIO */

        case 8:
        case 16:
        case 24:
        case 32:
            pATI->Closeable = fbScreenInit(pScreen, pFB,
                pScreenInfo->virtualX, pScreenInfo->virtualY,
                pScreenInfo->xDpi, pScreenInfo->yDpi, pATI->displayWidth,
                pATI->bitsPerPixel);
            break;

        default:
            return FALSE;
    }

    if (!pATI->Closeable)
        return FALSE;

    /* Fixup RGB ordering */
    if (pATI->depth > 8)
    {
        VisualPtr pVisual = pScreen->visuals + pScreen->numVisuals;

        while (--pVisual >= pScreen->visuals)
        {
            if ((pVisual->class | DynamicClass) != DirectColor)
                continue;

            pVisual->offsetRed = pScreenInfo->offset.red;
            pVisual->offsetGreen = pScreenInfo->offset.green;
            pVisual->offsetBlue = pScreenInfo->offset.blue;

            pVisual->redMask = pScreenInfo->mask.red;
            pVisual->greenMask = pScreenInfo->mask.green;
            pVisual->blueMask = pScreenInfo->mask.blue;
        }
    }

    /* If applicable, initialise RENDER extension */
    if (pATI->bitsPerPixel > 4)
    {
        if (pATI->OptionShadowFB)
        {
            if (serverGeneration == 1)
                xf86DrvMsg(pScreenInfo->scrnIndex, X_WARNING,
                    "RENDER extension not supported with a shadowed"
                    " framebuffer.\n");
        }

#ifndef AVOID_CPIO

        else if (pATI->BankInfo.BankSize)
        {
            if (serverGeneration == 1)
                xf86DrvMsg(pScreenInfo->scrnIndex, X_WARNING,
                    "RENDER extension not supported with a banked"
                    " framebuffer.\n");
        }

#endif /* AVOID_CPIO */

        else if (!fbPictureInit(pScreen, NULL, 0) &&
                 (serverGeneration == 1))
        {
            xf86DrvMsg(pScreenInfo->scrnIndex, X_WARNING,
                "RENDER extension initialisation failed.\n");
        }
    }

    xf86SetBlackWhitePixels(pScreen);

#ifndef AVOID_CPIO

    /* Initialise banking if needed */
    if (!miInitializeBanking(pScreen,
                             pScreenInfo->virtualX, pScreenInfo->virtualY,
                             pATI->displayWidth, &pATI->BankInfo))
        return FALSE;

#endif /* AVOID_CPIO */

#ifdef USE_XAA

    if (!pATI->useEXA) {

    /* Memory manager setup */

#ifdef XF86DRI_DEVEL
    if (pATI->directRenderingEnabled)
    {
        if (!ATIMach64SetupMemXAA(iScreen, pScreen))
            return FALSE;
    }
    else
#endif /* XF86DRI_DEVEL */
    {
        if (!ATIMach64SetupMemXAA_NoDRI(iScreen, pScreen))
            return FALSE;
    }

    /* Setup acceleration */

    if (!ATIInitializeAcceleration(pScreen, pScreenInfo, pATI))
        return FALSE;

    }

#endif /* USE_XAA */

#ifdef USE_EXA

    if (pATI->useEXA) {
        /* EXA setups both memory manager and acceleration here */

        if (pATI->OptionAccel && !ATIMach64ExaInit(pScreen))
            return FALSE;
    }

#endif /* USE_EXA */

#ifndef AVOID_DGA

    /* Initialise DGA support */
    (void)ATIDGAInit(pScreen, pScreenInfo, pATI);

#endif /* AVOID_DGA */

    /* Initialise backing store */
    miInitializeBackingStore(pScreen);
    xf86SetBackingStore(pScreen);

    /* Initialise cursor */
    if (!ATIInitializeCursor(pScreen, pATI))
        return FALSE;

    /* Create default colourmap */
    if (!miCreateDefColormap(pScreen))
        return FALSE;

#ifdef AVOID_CPIO

    if (!xf86HandleColormaps(pScreen, 256, pATI->rgbBits, ATILoadPalette, NULL,
                             CMAP_PALETTED_TRUECOLOR |
                             CMAP_LOAD_EVEN_IF_OFFSCREEN))
            return FALSE;

#else /* AVOID_CPIO */

    if (pATI->depth > 1)
        if (!xf86HandleColormaps(pScreen, (pATI->depth == 4) ? 16 : 256,
                                 pATI->rgbBits, ATILoadPalette, NULL,
                                 CMAP_PALETTED_TRUECOLOR |
                                 CMAP_LOAD_EVEN_IF_OFFSCREEN))
            return FALSE;

#endif /* AVOID_CPIO */

    /* Initialise shadow framebuffer */
    if (pATI->OptionShadowFB &&
        !ShadowFBInit(pScreen, ATIRefreshArea))
        return FALSE;

    /* Initialise DPMS support */
    (void)xf86DPMSInit(pScreen, ATISetDPMSMode, 0);

    /* Initialise XVideo support */
    (void)ATIInitializeXVideo(pScreen, pScreenInfo, pATI);

    /* Set pScreen->SaveScreen and wrap CloseScreen vector */
    pScreen->SaveScreen = ATISaveScreen;
    pATI->CloseScreen = pScreen->CloseScreen;
    pScreen->CloseScreen = ATICloseScreen;

    if (serverGeneration == 1)
        xf86ShowUnusedOptions(pScreenInfo->scrnIndex, pScreenInfo->options);

#ifdef TV_OUT
    /* Fix-up TV out after ImpacTV probe */
    if (pATI->OptionTvOut && pATI->Chip < ATI_CHIP_264GTPRO)
        ATISwitchMode(0, pScreenInfo->currentMode, 0);
#endif /* TV_OUT */

#ifdef XF86DRI_DEVEL

    /* DRI finalization */
    if (pATI->directRenderingEnabled) {
	/* Now that mi, fb, drm and others have done their thing,
	 * complete the DRI setup.
	 */
	pATI->directRenderingEnabled = ATIDRIFinishScreenInit(pScreen);
    }
    if (pATI->directRenderingEnabled) {
	xf86DrvMsg(pScreenInfo->scrnIndex, X_INFO,
		   "Direct rendering enabled\n");
    } else {
        /* FIXME: Release unused offscreen mem here? */
	xf86DrvMsg(pScreenInfo->scrnIndex, X_INFO,
		   "Direct rendering disabled\n");
    }

#endif /* XF86DRI_DEVEL */

    return TRUE;
}

/*
 * ATICloseScreen --
 *
 * This function is called by DIX to close the screen.
 */
Bool
ATICloseScreen
(
    int       iScreen,
    ScreenPtr pScreen
)
{
    ScrnInfoPtr pScreenInfo = xf86Screens[iScreen];
    ATIPtr      pATI        = ATIPTR(pScreenInfo);
    Bool        Closed      = TRUE;

#ifdef XF86DRI_DEVEL

    /* Disable direct rendering */
    if (pATI->directRenderingEnabled)
    {
	ATIDRICloseScreen(pScreen);
	pATI->directRenderingEnabled = FALSE;
    }

#endif /* XF86DRI_DEVEL */

    ATICloseXVideo(pScreen, pScreenInfo, pATI);

#ifdef USE_EXA
    if (pATI->pExa)
    {
        exaDriverFini(pScreen);
        xfree(pATI->pExa);
        pATI->pExa = NULL;
    }
#endif
#ifdef USE_XAA
    if (pATI->pXAAInfo)
    {
        XAADestroyInfoRec(pATI->pXAAInfo);
        pATI->pXAAInfo = NULL;
    }
#endif

    if ((pScreen->CloseScreen = pATI->CloseScreen))
    {
        pATI->CloseScreen = NULL;
        Closed = (*pScreen->CloseScreen)(iScreen, pScreen);
    }

    pATI->Closeable = FALSE;

    if (pATI->pCursorInfo)
    {
        xf86DestroyCursorInfoRec(pATI->pCursorInfo);
        pATI->pCursorInfo = NULL;
    }

    ATILeaveGraphics(pScreenInfo, pATI);

#ifdef USE_XAA
    if (!pATI->useEXA)
    {
        xfree(pATI->ExpansionBitmapScanlinePtr[1]);
        pATI->ExpansionBitmapScanlinePtr[0] = NULL;
        pATI->ExpansionBitmapScanlinePtr[1] = NULL;
    }
#endif

    xfree(pATI->pShadow);
    pATI->pShadow = NULL;
    pScreenInfo->pScreen = NULL;

    return Closed;
}