Add support for EXA to the radeon driver. Building EXA and XAA support is

    controlled at compile time, plus the runtime option of Option
    "AccelMethod" "EXA" or "XAA". The XAA support appears to remain as
    before, while the EXA pieces need just a little more polishing. Notable
    features:
- Render acceleration working on Radeon 100 and 200-series with DRI on.
- DRI works with EXA Notable issues:
- DGA disabled in the EXA case.
- Backbuffer moves disabled in the EXA case.
- No textured XVideo.
- MMIO render acceleration is close but still has some issues.
- Memory pressure while using Composite is really troublesome with DRI on.
    This patch is based on an initial patch by Zack Rusin, with significant
    work by Benjamin Herrenschmidt and myself.

1 files changed, 60 insertions, 25 deletions

diff --git a/src/radeon_dri.c b/src/radeon_dri.c
index 8e2fe44..892e5d5 100644
--- a/src/radeon_dri.c
+++ b/src/radeon_dri.c
@@ -42,6 +42,7 @@
 
 				/* Driver data structures */
 #include "radeon.h"
+#include "radeon_video.h"
 #include "radeon_reg.h"
 #include "radeon_macros.h"
 #include "radeon_dri.h"
@@ -347,17 +348,15 @@ static void RADEONEnterServer(ScreenPtr pScreen)
 {
     ScrnInfoPtr    pScrn = xf86Screens[pScreen->myNum];
     RADEONInfoPtr  info  = RADEONPTR(pScrn);
-#ifdef RENDER
     RADEONSAREAPrivPtr pSAREAPriv;
-#endif
 
-    if (info->accel) info->accel->NeedToSync = TRUE;
 
-#ifdef RENDER
+    RADEON_MARK_SYNC(info, pScrn);
+
     pSAREAPriv = DRIGetSAREAPrivate(pScrn->pScreen);
     if (pSAREAPriv->ctxOwner != DRIGetContext(pScrn->pScreen))
-	info->RenderInited3D = FALSE;
-#endif
+	info->XInited3D = FALSE;
+
 
     /* TODO: Fix this more elegantly.
      * Sometimes (especially with multiple DRI clients), this code
@@ -528,6 +527,7 @@ static void RADEONDRIInitBuffers(WindowPtr pWin, RegionPtr prgn, CARD32 indx)
 static void RADEONDRIMoveBuffers(WindowPtr pParent, DDXPointRec ptOldOrg,
 				 RegionPtr prgnSrc, CARD32 indx)
 {
+#ifdef USE_XAA
     ScreenPtr      pScreen  = pParent->drawable.pScreen;
     ScrnInfoPtr    pScrn    = xf86Screens[pScreen->myNum];
     RADEONInfoPtr  info     = RADEONPTR(pScrn);
@@ -551,6 +551,10 @@ static void RADEONDRIMoveBuffers(WindowPtr pParent, DDXPointRec ptOldOrg,
     int            dx       = pParent->drawable.x - ptOldOrg.x;
     int            dy       = pParent->drawable.y - ptOldOrg.y;
 
+    /* XXX: Fix in EXA case. */
+    if (info->useEXA)
+	return;
+
     /* If the copy will overlap in Y, reverse the order */
     if (dy > 0) {
 	ydir = -1;
@@ -683,6 +687,7 @@ static void RADEONDRIMoveBuffers(WindowPtr pParent, DDXPointRec ptOldOrg,
     DEALLOCATE_LOCAL(pboxNew1);
 
     info->accel->NeedToSync = TRUE;
+#endif /* USE_XAA */
 }
 
 static void RADEONDRIInitGARTValues(RADEONInfoPtr info)
@@ -1183,7 +1188,10 @@ static void RADEONDRICPInit(ScrnInfoPtr pScrn)
 
 				/* Make sure the CP is on for the X server */
     RADEONCP_START(pScrn, info);
-    info->dst_pitch_offset = info->frontPitchOffset;
+#ifdef USE_XAA
+    if (!info->useEXA)
+	info->dst_pitch_offset = info->frontPitchOffset;
+#endif
 }
 
 
@@ -1276,7 +1284,7 @@ Bool RADEONDRIScreenInit(ScreenPtr pScreen)
     				RADEON_VERSION_MAJOR_TILED : RADEON_VERSION_MAJOR;
     pDRIInfo->ddxDriverMinorVersion      = RADEON_VERSION_MINOR;
     pDRIInfo->ddxDriverPatchVersion      = RADEON_VERSION_PATCH;
-    pDRIInfo->frameBufferPhysicalAddress = info->LinearAddr;
+    pDRIInfo->frameBufferPhysicalAddress = (void *)info->LinearAddr;
     pDRIInfo->frameBufferSize            = info->FbMapSize;
     pDRIInfo->frameBufferStride          = (pScrn->displayWidth *
 					    info->CurrentLayout.pixel_bytes);
@@ -1602,7 +1610,7 @@ Bool RADEONDRIFinishScreenInit(ScreenPtr pScreen)
 #endif
 
     /* Have shadowfb run only while there is 3d active. */
-    if (info->allowPageFlip /* && info->drmMinor >= 3 */) {
+    if (!info->useEXA && info->allowPageFlip /* && info->drmMinor >= 3 */) {
 	ShadowFBInit( pScreen, RADEONDRIRefreshArea );
     } else {
        info->allowPageFlip = 0;
@@ -1795,6 +1803,8 @@ static void RADEONDRIRefreshArea(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
     if (!pSAREAPriv->pfAllowPageFlip && pSAREAPriv->pfCurrentPage == 0)
 	return;
 
+#ifdef USE_XAA
+    /* XXX: implement for EXA */
     /* pretty much a hack. */
     if (info->tilingEnabled)
        info->dst_pitch_offset |= RADEON_DST_TILE_MACRO;
@@ -1815,6 +1825,7 @@ static void RADEONDRIRefreshArea(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
 	}
     }
     info->dst_pitch_offset &= ~RADEON_DST_TILE_MACRO;
+#endif /* USE_XAA */
 }
 
 static void RADEONEnablePageFlip(ScreenPtr pScreen)
@@ -1823,6 +1834,8 @@ static void RADEONEnablePageFlip(ScreenPtr pScreen)
     RADEONInfoPtr       info       = RADEONPTR(pScrn);
     RADEONSAREAPrivPtr  pSAREAPriv = DRIGetSAREAPrivate(pScreen);
 
+#ifdef USE_XAA
+    /* XXX: Fix in EXA case */
     if (info->allowPageFlip) {
         /* pretty much a hack. */
 	if (info->tilingEnabled)
@@ -1843,6 +1856,7 @@ static void RADEONEnablePageFlip(ScreenPtr pScreen)
 	info->dst_pitch_offset &= ~RADEON_DST_TILE_MACRO;
 	pSAREAPriv->pfAllowPageFlip = 1;
     }
+#endif /* USE_XAA */
 }
 
 static void RADEONDisablePageFlip(ScreenPtr pScreen)
@@ -1874,6 +1888,21 @@ static void RADEONDRITransitionTo3d(ScreenPtr pScreen)
     FBAreaPtr      fbarea;
     int            width, height;
 
+    info->have3DWindows = 1;
+
+    RADEONChangeSurfaces(pScrn);
+    RADEONEnablePageFlip(pScreen);
+
+    if (info->cursor_offset != 0)
+	xf86ForceHWCursor (pScreen, TRUE);
+
+#ifdef USE_XAA
+    /* EXA allocates these areas up front, so it doesn't do the following
+     * stuff.
+     */
+    if (info->useEXA)
+	return;
+
     /* reserve offscreen area for back and depth buffers and textures */
 
     /* If we still have an area for the back buffer reserved, free it
@@ -1889,15 +1918,21 @@ static void RADEONDRITransitionTo3d(ScreenPtr pScreen)
 
     xf86QueryLargestOffscreenArea(pScreen, &width, &height, 0, 0, 0);
 
-    /* Free Xv linear offscreen memory if necessary */
+    /* Free Xv linear offscreen memory if necessary
+     * FIXME: This is hideous.  What about telling xv "oh btw you have no memory
+     * any more?" -- anholt
+     */
     if (height < (info->depthTexLines + info->backLines)) {
-	xf86FreeOffscreenLinear(info->videoLinear);
-	info->videoLinear = NULL;
+	RADEONPortPrivPtr portPriv = info->adaptor->pPortPrivates[0].ptr;
+	xf86FreeOffscreenLinear((FBLinearPtr)portPriv->video_memory);
+	portPriv->video_memory = NULL;
 	xf86QueryLargestOffscreenArea(pScreen, &width, &height, 0, 0, 0);
     }
 
     /* Reserve placeholder area so the other areas will match the
      * pre-calculated offsets
+     * FIXME: We may have other locked allocations and thus this would allocate
+     * in the wrong place.  The XV surface allocations seem likely. -- anholt
      */
     fbarea = xf86AllocateOffscreenArea(pScreen, pScrn->displayWidth,
 				       height
@@ -1929,14 +1964,7 @@ static void RADEONDRITransitionTo3d(ScreenPtr pScreen)
 		   "experience screen corruption\n");
 
     xf86FreeOffscreenArea(fbarea);
-
-    info->have3DWindows = 1;
-
-    RADEONChangeSurfaces(pScrn);
-    RADEONEnablePageFlip(pScreen);
-
-    if (info->cursor_start)
-	xf86ForceHWCursor (pScreen, TRUE);
+#endif /* USE_XAA */
 }
 
 static void RADEONDRITransitionTo2d(ScreenPtr pScreen)
@@ -1952,22 +1980,29 @@ static void RADEONDRITransitionTo2d(ScreenPtr 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;
+#ifdef USE_XAA
+	if (!info->useEXA) {
+	    xf86FreeOffscreenArea(info->backArea);
+	    info->backArea = NULL;
+	}
+#endif
     } else {
 	xf86DrvMsg(pScreen->myNum, X_WARNING,
 		   "[dri] RADEONDRITransitionTo2d: "
 		   "kernel failed to unflip buffers.\n");
     }
 
-    xf86FreeOffscreenArea(info->depthTexArea);
+#ifdef USE_XAA
+    if (!info->useEXA)
+	xf86FreeOffscreenArea(info->depthTexArea);
+#endif
 
     info->have3DWindows = 0;
 
     RADEONChangeSurfaces(pScrn);
 
-    if (info->cursor_start)
-	    xf86ForceHWCursor (pScreen, FALSE);
+    if (info->cursor_offset != 0)
+	xf86ForceHWCursor (pScreen, FALSE);
 }
 
 void RADEONDRIAllocatePCIGARTTable(ScreenPtr pScreen)