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, 75 insertions, 16 deletions

diff --git a/src/radeon_dga.c b/src/radeon_dga.c
index 9c70d78..06fc62e 100644
--- a/src/radeon_dga.c
+++ b/src/radeon_dga.c
@@ -61,9 +61,10 @@ static int  RADEON_GetViewport(ScrnInfoPtr);
 static void RADEON_SetViewport(ScrnInfoPtr, int, int, int);
 static void RADEON_FillRect(ScrnInfoPtr, int, int, int, int, unsigned long);
 static void RADEON_BlitRect(ScrnInfoPtr, int, int, int, int, int, int);
+#ifdef USE_XAA
 static void RADEON_BlitTransRect(ScrnInfoPtr, int, int, int, int, int, int,
 				 unsigned long);
-
+#endif
 
 static DGAModePtr RADEONSetupDGAMode(ScrnInfoPtr pScrn,
 				     DGAModePtr modes,
@@ -112,7 +113,19 @@ SECOND_PASS:
 	    if (pixmap)
 		currentMode->flags     |= DGA_PIXMAP_AVAILABLE;
 
-	    if (info->accel) {
+#ifdef USE_EXA
+	    if (info->useEXA) {
+		/* We need to fill in RADEON_FillRect and RADEON_BlitRect and
+		 * connect them in RADEONDGAInit before turning these on.
+		 */
+		/*if (info->exa.accel.PrepareSolid && info->exa.accel.Solid)
+		    currentMode->flags    |= DGA_FILL_RECT;
+		if (info->exa.accel.PrepareCopy && info->exa.accel.Copy)
+		    currentMode->flags    |= DGA_BLIT_RECT | DGA_BLIT_RECT_TRANS;*/
+	    }
+#endif /* USE_EXA */
+#ifdef USE_XAA
+	    if (!info->useEXA && info->accel) {
 	      if (info->accel->SetupForSolidFill &&
 		  info->accel->SubsequentSolidFillRect)
 		 currentMode->flags    |= DGA_FILL_RECT;
@@ -124,6 +137,8 @@ SECOND_PASS:
 		   DGA_BLIT_RECT | DGA_BLIT_RECT_TRANS))
 		  currentMode->flags   &= ~DGA_CONCURRENT_ACCESS;
 	    }
+#endif /* USE_XAA */
+
 	    if (pMode->Flags & V_DBLSCAN)
 		currentMode->flags     |= DGA_DOUBLESCAN;
 	    if (pMode->Flags & V_INTERLACE)
@@ -237,7 +252,19 @@ Bool RADEONDGAInit(ScreenPtr pScreen)
     info->DGAFuncs.BlitRect              = NULL;
     info->DGAFuncs.BlitTransRect         = NULL;
 
-    if (info->accel) {
+#ifdef USE_EXA
+    /*info->DGAFuncs.Sync              = info->exa.accel->Sync;*/
+    if (info->useEXA) {
+	/*if (info->exa.accel.PrepareSolid && info->exa.accel.Solid) {
+	    info->DGAFuncs.FillRect      = RADEON_FillRect;
+	}
+	if (info->exa.accel.PrepareCopy && info->exa.accel.Copy) {
+	    info->DGAFuncs.BlitRect      = RADEON_BlitRect;
+	}*/
+    }
+#endif /* USE_EXA */
+#ifdef USE_XAA
+    if (!info->useEXA && info->accel) {
 	info->DGAFuncs.Sync              = info->accel->Sync;
 	if (info->accel->SetupForSolidFill &&
 	    info->accel->SubsequentSolidFillRect)
@@ -248,6 +275,7 @@ Bool RADEONDGAInit(ScreenPtr pScreen)
 	    info->DGAFuncs.BlitTransRect = RADEON_BlitTransRect;
 	}
     }
+#endif /* USE_XAA */
 
     return DGAInit(pScreen, &info->DGAFuncs, modes, num);
 }
@@ -332,17 +360,33 @@ static void RADEON_SetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
     info->DGAViewportStatus = 0;  /* FIXME */
 }
 
+
 static void RADEON_FillRect(ScrnInfoPtr pScrn,
 			    int x, int y, int w, int h,
 			    unsigned long color)
 {
     RADEONInfoPtr  info = RADEONPTR(pScrn);
 
-    (*info->accel->SetupForSolidFill)(pScrn, color, GXcopy, (CARD32)(~0));
-    (*info->accel->SubsequentSolidFillRect)(pScrn, x, y, w, h);
+#ifdef USE_EXA
+    /* XXX */
+    if (info->useEXA) {
+	/*
+	info->exa.accel.PrepareSolid(pScrn, color, GXcopy, (CARD32)(~0));
+	info->exa.accel.Solid(pScrn, x, y, x+w, y+h);
+	info->exa.accel.DoneSolid();
+	*/
+	RADEON_MARK_SYNC(info, pScrn);
+    }
+#endif /* USE_EXA */
+#ifdef USE_XAA
+    if (!info->useEXA) {
+	(*info->accel->SetupForSolidFill)(pScrn, color, GXcopy, (CARD32)(~0));
+	(*info->accel->SubsequentSolidFillRect)(pScrn, x, y, w, h);
+        if (pScrn->bitsPerPixel == info->CurrentLayout.bitsPerPixel)
+	    RADEON_MARK_SYNC(info, pScrn);
+    }
+#endif /* USE_XAA */
 
-    if (pScrn->bitsPerPixel == info->CurrentLayout.bitsPerPixel)
-	SET_SYNC_FLAG(info->accel);
 }
 
 static void RADEON_BlitRect(ScrnInfoPtr pScrn,
@@ -353,15 +397,30 @@ static void RADEON_BlitRect(ScrnInfoPtr pScrn,
     int            xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1;
     int            ydir = (srcy < dsty) ? -1 : 1;
 
-    (*info->accel->SetupForScreenToScreenCopy)(pScrn, xdir, ydir,
-					       GXcopy, (CARD32)(~0), -1);
-    (*info->accel->SubsequentScreenToScreenCopy)(pScrn, srcx, srcy,
-						 dstx, dsty, w, h);
-
-    if (pScrn->bitsPerPixel == info->CurrentLayout.bitsPerPixel)
-	SET_SYNC_FLAG(info->accel);
+	#ifdef USE_EXA
+    /* XXX */
+    if (info->useEXA) {
+	/*
+	info->exa.accel.PrepareCopy(pScrn, color, GXcopy, (CARD32)(~0));
+	info->exa.accel.Copy(pScrn, srcx, srcy, dstx, dsty, w, h);
+	info->exa.accel.DoneCopy();
+	*/
+	RADEON_MARK_SYNC(info, pScrn);
+    }
+#endif /* USE_EXA */
+#ifdef USE_XAA
+    if (!info->useEXA) {
+	(*info->accel->SetupForScreenToScreenCopy)(pScrn, xdir, ydir,
+						   GXcopy, (CARD32)(~0), -1);
+	(*info->accel->SubsequentScreenToScreenCopy)(pScrn, srcx, srcy,
+						     dstx, dsty, w, h);
+        if (pScrn->bitsPerPixel == info->CurrentLayout.bitsPerPixel)
+	    RADEON_MARK_SYNC(info, pScrn);
+    }
+#endif /* USE_XAA */
 }
 
+#ifdef USE_XAA
 static void RADEON_BlitTransRect(ScrnInfoPtr pScrn,
 				 int srcx, int srcy, int w, int h,
 				 int dstx, int dsty, unsigned long color)
@@ -371,7 +430,6 @@ static void RADEON_BlitTransRect(ScrnInfoPtr pScrn,
     int            ydir = (srcy < dsty) ? -1 : 1;
 
     info->XAAForceTransBlit = TRUE;
-
     (*info->accel->SetupForScreenToScreenCopy)(pScrn, xdir, ydir,
 					       GXcopy, (CARD32)(~0), color);
 
@@ -381,8 +439,9 @@ static void RADEON_BlitTransRect(ScrnInfoPtr pScrn,
 						 dstx, dsty, w, h);
 
     if (pScrn->bitsPerPixel == info->CurrentLayout.bitsPerPixel)
-	SET_SYNC_FLAG(info->accel);
+        RADEON_MARK_SYNC(info, pScrn);
 }
+#endif /* USE_XAA */
 
 static Bool RADEON_OpenFramebuffer(ScrnInfoPtr pScrn,
 				   char **name,