radeon_dri.c

ati driver

	return FALSE;
    }

				/* DRIScreenInit doesn't add all the
				 * common mappings.  Add additional
				 * mappings here.
				 */
    if (!RADEONDRIMapInit(info, pScreen)) {
	RADEONDRICloseScreen(pScreen);
	return FALSE;
    }

				/* DRIScreenInit adds the frame buffer
				   map, but we need it as well */
    {
	void *scratch_ptr;
        int scratch_int;
	
	DRIGetDeviceInfo(pScreen, &info->fbHandle,
                         &scratch_int, &scratch_int, 
                         &scratch_int, &scratch_int,
                         &scratch_ptr);
    }

				/* FIXME: When are these mappings unmapped? */

    if (!RADEONInitVisualConfigs(pScreen)) {
	RADEONDRICloseScreen(pScreen);
	return FALSE;
    }
    xf86DrvMsg(pScrn->scrnIndex, X_INFO, "[dri] Visual configs initialized\n");

    return TRUE;
}

/* Finish initializing the device-dependent DRI state, and call
 * DRIFinishScreenInit() to complete the device-independent DRI
 * initialization.
 */
Bool RADEONDRIFinishScreenInit(ScreenPtr pScreen)
{
    ScrnInfoPtr         pScrn = xf86Screens[pScreen->myNum];
    RADEONInfoPtr       info  = RADEONPTR(pScrn);
    RADEONSAREAPrivPtr  pSAREAPriv;
    RADEONDRIPtr        pRADEONDRI;

    info->pDRIInfo->driverSwapMethod = DRI_HIDE_X_CONTEXT;
    /* info->pDRIInfo->driverSwapMethod = DRI_SERVER_SWAP; */

    /* NOTE: DRIFinishScreenInit must be called before *DRIKernelInit
     * because *DRIKernelInit requires that the hardware lock is held by
     * the X server, and the first time the hardware lock is grabbed is
     * in DRIFinishScreenInit.
     */
    if (!DRIFinishScreenInit(pScreen)) {
	RADEONDRICloseScreen(pScreen);
	return FALSE;
    }

    /* Initialize the kernel data structures */
    if (!RADEONDRIKernelInit(info, pScreen)) {
	RADEONDRICloseScreen(pScreen);
	return FALSE;
    }

    /* Initialize the vertex buffers list */
    if (!RADEONDRIBufInit(info, pScreen)) {
	RADEONDRICloseScreen(pScreen);
	return FALSE;
    }

    /* Initialize IRQ */
    RADEONDRIIrqInit(info, pScreen);

    /* Initialize kernel GART memory manager */
    RADEONDRIGartHeapInit(info, pScreen);

    /* Initialize and start the CP if required */
    RADEONDRICPInit(pScrn);

    /* Initialize the SAREA private data structure */
    pSAREAPriv = (RADEONSAREAPrivPtr)DRIGetSAREAPrivate(pScreen);
    memset(pSAREAPriv, 0, sizeof(*pSAREAPriv));

    pRADEONDRI                    = (RADEONDRIPtr)info->pDRIInfo->devPrivate;

    pRADEONDRI->deviceID          = info->Chipset;
    pRADEONDRI->width             = pScrn->virtualX;
    pRADEONDRI->height            = pScrn->virtualY;
    pRADEONDRI->depth             = pScrn->depth;
    pRADEONDRI->bpp               = pScrn->bitsPerPixel;

    pRADEONDRI->IsPCI             = info->IsPCI;
    pRADEONDRI->AGPMode           = info->agpMode;

    pRADEONDRI->frontOffset       = info->frontOffset;
    pRADEONDRI->frontPitch        = info->frontPitch;
    pRADEONDRI->backOffset        = info->backOffset;
    pRADEONDRI->backPitch         = info->backPitch;
    pRADEONDRI->depthOffset       = info->depthOffset;
    pRADEONDRI->depthPitch        = info->depthPitch;
    pRADEONDRI->textureOffset     = info->textureOffset;
    pRADEONDRI->textureSize       = info->textureSize;
    pRADEONDRI->log2TexGran       = info->log2TexGran;

    pRADEONDRI->registerHandle    = info->registerHandle;
    pRADEONDRI->registerSize      = info->registerSize;

    pRADEONDRI->statusHandle      = info->ringReadPtrHandle;
    pRADEONDRI->statusSize        = info->ringReadMapSize;

    pRADEONDRI->gartTexHandle     = info->gartTexHandle;
    pRADEONDRI->gartTexMapSize    = info->gartTexMapSize;
    pRADEONDRI->log2GARTTexGran   = info->log2GARTTexGran;
    pRADEONDRI->gartTexOffset     = info->gartTexStart;

    pRADEONDRI->sarea_priv_offset = sizeof(XF86DRISAREARec);

#ifdef PER_CONTEXT_SAREA
    /* Set per-context SAREA size */
    pRADEONDRI->perctx_sarea_size = info->perctx_sarea_size;
#endif

    /* Have shadowfb run only while there is 3d active. */
    if (info->allowPageFlip /* && info->drmMinor >= 3 */) {
	ShadowFBInit( pScreen, RADEONDRIRefreshArea );
    } else {
       info->allowPageFlip = 0;
    }

    return TRUE;
}

/**
 * This function will attempt to get the Radeon hardware back into shape
 * after a resume from disc.
 *
 * Charl P. Botha <http://cpbotha.net>
 */
void RADEONDRIResume(ScreenPtr pScreen)
{
    int _ret;
    ScrnInfoPtr   pScrn   = xf86Screens[pScreen->myNum];
    RADEONInfoPtr info    = RADEONPTR(pScrn);

    if (info->drmMinor >= 9) {
	xf86DrvMsg(pScreen->myNum, X_INFO,
		   "[RESUME] Attempting to re-init Radeon hardware.\n");
    } else {
	xf86DrvMsg(pScreen->myNum, X_WARNING,
		   "[RESUME] Cannot re-init Radeon hardware, DRM too old\n"
		   "(need 1.9.0  or newer)\n");
	return;
    }

    if (!info->IsPCI) {
	if (!RADEONSetAgpMode(info, pScreen))
	    return;

	RADEONSetAgpBase(info);
    }

    _ret = drmCommandNone(info->drmFD, DRM_RADEON_CP_RESUME); 
    if (_ret) {      
	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,  
		   "%s: CP resume %d\n", __FUNCTION__, _ret); 
	/* FIXME: return? */
    }

    RADEONEngineRestore(pScrn);

    RADEONDRICPInit(pScrn);
}

/* The screen is being closed, so clean up any state and free any
 * resources used by the DRI.
 */
void RADEONDRICloseScreen(ScreenPtr pScreen)
{
    ScrnInfoPtr    pScrn = xf86Screens[pScreen->myNum];
    RADEONInfoPtr  info  = RADEONPTR(pScrn);
    drmRadeonInit  drmInfo;
    RING_LOCALS;

				/* Stop the CP */
    if (info->directRenderingEnabled) {
	/* If we've generated any CP commands, we must flush them to the
	 * kernel module now.
	 */
	if (info->CPInUse) {
	    RADEON_FLUSH_CACHE();
	    RADEON_WAIT_UNTIL_IDLE();
	    RADEONCPReleaseIndirect(pScrn);

	    info->CPInUse = FALSE;
	}
	RADEONCP_STOP(pScrn, info);
    }

    if (info->irq) {
	drmCtlUninstHandler(info->drmFD);
	info->irq = 0;
	info->ModeReg.gen_int_cntl = 0;
    }

				/* De-allocate vertex buffers */
    if (info->buffers) {
	drmUnmapBufs(info->buffers);
	info->buffers = NULL;
    }

				/* De-allocate all kernel resources */
    memset(&drmInfo, 0, sizeof(drmRadeonInit));
    drmInfo.func = DRM_RADEON_CLEANUP_CP;
    drmCommandWrite(info->drmFD, DRM_RADEON_CP_INIT,
		    &drmInfo, sizeof(drmRadeonInit));

				/* De-allocate all GART resources */
    if (info->gartTex) {
	drmUnmap(info->gartTex, info->gartTexMapSize);
	info->gartTex = NULL;
    }
    if (info->buf) {
	drmUnmap(info->buf, info->bufMapSize);
	info->buf = NULL;
    }
    if (info->ringReadPtr) {
	drmUnmap(info->ringReadPtr, info->ringReadMapSize);
	info->ringReadPtr = NULL;
    }
    if (info->ring) {
	drmUnmap(info->ring, info->ringMapSize);
	info->ring = NULL;
    }
    if (info->agpMemHandle != DRM_AGP_NO_HANDLE) {
	drmAgpUnbind(info->drmFD, info->agpMemHandle);
	drmAgpFree(info->drmFD, info->agpMemHandle);
	info->agpMemHandle = DRM_AGP_NO_HANDLE;
	drmAgpRelease(info->drmFD);
    }
    if (info->pciMemHandle) {
	drmScatterGatherFree(info->drmFD, info->pciMemHandle);
	info->pciMemHandle = 0;
    }

				/* De-allocate all DRI resources */
    DRICloseScreen(pScreen);

				/* De-allocate all DRI data structures */
    if (info->pDRIInfo) {
	if (info->pDRIInfo->devPrivate) {
	    xfree(info->pDRIInfo->devPrivate);
	    info->pDRIInfo->devPrivate = NULL;
	}
	DRIDestroyInfoRec(info->pDRIInfo);
	info->pDRIInfo = NULL;
    }
    if (info->pVisualConfigs) {
	xfree(info->pVisualConfigs);
	info->pVisualConfigs = NULL;
    }
    if (info->pVisualConfigsPriv) {
	xfree(info->pVisualConfigsPriv);
	info->pVisualConfigsPriv = NULL;
    }
}



/* Fullscreen hooks.  The DRI fullscreen mode can probably be removed as
 * it adds little or nothing above the mechanism below (and isn't widely
 * used).
 */
static Bool RADEONDRIOpenFullScreen(ScreenPtr pScreen)
{
    return TRUE;
}

static Bool RADEONDRICloseFullScreen(ScreenPtr pScreen)
{
    return TRUE;
}



/* Use callbacks from dri.c to support pageflipping mode for a single
 * 3d context without need for any specific full-screen extension.
 *
 * Also use these callbacks to allocate and free 3d-specific memory on
 * demand.
 */


/* Use the shadowfb module to maintain a list of dirty rectangles.
 * These are blitted to the back buffer to keep both buffers clean
 * during page-flipping when the 3d application isn't fullscreen.
 *
 * Unlike most use of the shadowfb code, both buffers are in video memory.
 *
 * An alternative to this would be to organize for all on-screen drawing
 * operations to be duplicated for the two buffers.  That might be
 * faster, but seems like a lot more work...
 */


static void RADEONDRIRefreshArea(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
{
    RADEONInfoPtr       info       = RADEONPTR(pScrn);
    int                 i;
    RADEONSAREAPrivPtr  pSAREAPriv = DRIGetSAREAPrivate(pScrn->pScreen);

    /* Don't want to do this when no 3d is active and pages are
     * right-way-round
     */
    if (!pSAREAPriv->pfAllowPageFlip && pSAREAPriv->pfCurrentPage == 0)
	return;

    (*info->accel->SetupForScreenToScreenCopy)(pScrn,
					       1, 1, GXcopy,
					       (CARD32)(-1), -1);

    for (i = 0 ; i < num ; i++, pbox++) {
	int xa = max(pbox->x1, 0), xb = min(pbox->x2, pScrn->virtualX-1);
	int ya = max(pbox->y1, 0), yb = min(pbox->y2, pScrn->virtualY-1);

	if (xa <= xb && ya <= yb) {
	    (*info->accel->SubsequentScreenToScreenCopy)(pScrn, xa, ya,
							 xa + info->backX,
							 ya + info->backY,
							 xb - xa + 1,
							 yb - ya + 1);
	}
    }
}

static void RADEONEnablePageFlip(ScreenPtr pScreen)
{
    ScrnInfoPtr         pScrn      = xf86Screens[pScreen->myNum];
    RADEONInfoPtr       info       = RADEONPTR(pScrn);
    RADEONSAREAPrivPtr  pSAREAPriv = DRIGetSAREAPrivate(pScreen);

    if (info->allowPageFlip) {
	/* Duplicate the frontbuffer to the backbuffer */
	(*info->accel->SetupForScreenToScreenCopy)(pScrn,
						   1, 1, GXcopy,
						   (CARD32)(-1), -1);

	(*info->accel->SubsequentScreenToScreenCopy)(pScrn,
						     0,
						     0,
						     info->backX,
						     info->backY,
						     pScrn->virtualX,
						     pScrn->virtualY);

	pSAREAPriv->pfAllowPageFlip = 1;
    }
}

static void RADEONDisablePageFlip(ScreenPtr pScreen)
{
    /* Tell the clients not to pageflip.  How?
     *   -- Field in sarea, plus bumping the window counters.
     *   -- DRM needs to cope with Front-to-Back swapbuffers.
     */
    RADEONSAREAPrivPtr  pSAREAPriv = DRIGetSAREAPrivate(pScreen);

    pSAREAPriv->pfAllowPageFlip = 0;
}

static void RADEONDRITransitionSingleToMulti3d(ScreenPtr pScreen)
{
    RADEONDisablePageFlip(pScreen);
}

static void RADEONDRITransitionMultiToSingle3d(ScreenPtr pScreen)
{
    /* Let the remaining 3d app start page flipping again */
    RADEONEnablePageFlip(pScreen);
}

static void RADEONDRITransitionTo3d(ScreenPtr pScreen)
{
    ScrnInfoPtr    pScrn = xf86Screens[pScreen->myNum];
    RADEONInfoPtr  info  = RADEONPTR(pScrn);
    FBAreaPtr      fbarea;
    int            width, height;

    /* reserve offscreen area for back and depth buffers and textures */

    /* If we still have an area for the back buffer reserved, free it
     * first so we always start with all free offscreen memory, except
     * maybe for Xv
     */
    if (info->backArea) {
	xf86FreeOffscreenArea(info->backArea);
	info->backArea = NULL;
    }

    xf86PurgeUnlockedOffscreenAreas(pScreen);

    xf86QueryLargestOffscreenArea(pScreen, &width, &height, 0, 0, 0);

    /* Free Xv linear offscreen memory if necessary */
    if (height < (info->depthTexLines + info->backLines)) {
	xf86FreeOffscreenLinear(info->videoLinear);
	info->videoLinear = NULL;
	xf86QueryLargestOffscreenArea(pScreen, &width, &height, 0, 0, 0);
    }

    /* Reserve placeholder area so the other areas will match the
     * pre-calculated offsets
     */
    fbarea = xf86AllocateOffscreenArea(pScreen, pScrn->displayWidth,
				       height
				       - info->depthTexLines
				       - info->backLines,
				       pScrn->displayWidth,
				       NULL, NULL, NULL);
    if (!fbarea)
	xf86DrvMsg(pScreen->myNum, X_ERROR, "Unable to reserve placeholder "
		   "offscreen area, you might experience screen corruption\n");

    info->backArea = xf86AllocateOffscreenArea(pScreen, pScrn->displayWidth,
					       info->backLines,
					       pScrn->displayWidth,
					       NULL, NULL, NULL);
    if (!info->backArea)
	xf86DrvMsg(pScreen->myNum, X_ERROR, "Unable to reserve offscreen "
		   "area for back buffer, you might experience screen "
		   "corruption\n");

    info->depthTexArea = xf86AllocateOffscreenArea(pScreen,
						   pScrn->displayWidth,
						   info->depthTexLines,
						   pScrn->displayWidth,
						   NULL, NULL, NULL);
    if (!info->depthTexArea)
	xf86DrvMsg(pScreen->myNum, X_ERROR, "Unable to reserve offscreen "
		   "area for depth buffer and textures, you might "
		   "experience screen corruption\n");

    xf86FreeOffscreenArea(fbarea);

    RADEONEnablePageFlip(pScreen);

    info->have3DWindows = 1;

    if (info->cursor_start)
	xf86ForceHWCursor (pScreen, TRUE);
}

static void RADEONDRITransitionTo2d(ScreenPtr pScreen)
{
    ScrnInfoPtr         pScrn      = xf86Screens[pScreen->myNum];
    RADEONInfoPtr       info       = RADEONPTR(pScrn);
    RADEONSAREAPrivPtr  pSAREAPriv = DRIGetSAREAPrivate(pScreen);

    /* Shut down shadowing if we've made it back to the front page */
    if (pSAREAPriv->pfCurrentPage == 0) {
	RADEONDisablePageFlip(pScreen);
	xf86FreeOffscreenArea(info->backArea);
	info->backArea = NULL;
    } else {
	xf86DrvMsg(pScreen->myNum, X_WARNING,
		   "[dri] RADEONDRITransitionTo2d: "
		   "kernel failed to unflip buffers.\n"); 
    }

    xf86FreeOffscreenArea(info->depthTexArea); 

    info->have3DWindows = 0;

    if (info->cursor_start)
	    xf86ForceHWCursor (pScreen, FALSE);
}