Fix a regression of my latest fix that broke color tiling on some setups.

    RADEONRestoreMemMapRegisters() must not clear CRTC_OFFSET_CNTL and
    friends unconditionally but only when there is a map change or it will
    clear them after the DRI updates the AGP location, thus turning tiling
    back off on the CRTC. Also remove a duplicate call to
    RADEONInitCommonRegisters().

2 files changed, 41 insertions, 37 deletions

diff --git a/ChangeLog b/ChangeLog
index 0a52cdd0..b37ed2b7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+2006-03-27  Benjamin Herrenschmidt  <benh@kernel.crashing.org>
+
+	* src/radeon_driver.c: (RADEONRestoreMemMapRegisters),
+	(RADEONInit):
+	Fix a regression of my latest fix that broke color tiling on some
+	setups. RADEONRestoreMemMapRegisters() must not clear CRTC_OFFSET_CNTL
+	and friends unconditionally but only when there is a map change or it
+	will clear them after the DRI updates the AGP location, thus turning
+	tiling back off on the CRTC.
+	Also remove a duplicate call to RADEONInitCommonRegisters().
+
 2006-03-23  Roland Scheidegger  <rscheidegger_lists@hispeed.ch>
 	* src/radeon_reg.h:
 	* src/radeon_video.c: (RADEONResetVideo), (RADEONDisplayVideo),
diff --git a/src/radeon_driver.c b/src/radeon_driver.c
index 744fe695..467cc0d5 100644
--- a/src/radeon_driver.c
+++ b/src/radeon_driver.c
@@ -1,5 +1,5 @@
 /* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/radeon_driver.c,v 1.117 2004/02/19 22:38:12 tsi Exp $ */
-/* $XdotOrg: driver/xf86-video-ati/src/radeon_driver.c,v 1.92.2.12 2006/03/18 00:11:39 benh Exp $ */
+/* $XdotOrg: driver/xf86-video-ati/src/radeon_driver.c,v 1.92.2.13 2006/03/23 01:39:07 benh Exp $ */
 /*
  * Copyright 2000 ATI Technologies Inc., Markham, Ontario, and
  *                VA Linux Systems Inc., Fremont, California.
@@ -6220,56 +6220,50 @@ static void RADEONRestoreMemMapRegisters(ScrnInfoPtr pScrn,
 	/* Reset the engine and HDP */
 	RADEONEngineReset(pScrn);
 
-	RADEONTRACE(("  All done.\n"));
-    }
-
-    RADEONTRACE(("Updating base addresses...\n"));
-
-    /* Make sure we have sane offsets before enabling, disable
-     * stereo and wait for offsets to catch up with hw
-     */
-    OUTREG(RADEON_CRTC_OFFSET_CNTL, RADEON_CRTC_OFFSET_FLIP_CNTL);
-    OUTREG(RADEON_CRTC_OFFSET, 0);
-    OUTREG(RADEON_CRTC_OFFSET_CNTL, 0);
-    OUTREG(RADEON_CUR_OFFSET, 0);
-    timeout = 0;
-    while(INREG(RADEON_CRTC_OFFSET) & RADEON_CRTC_OFFSET__GUI_TRIG_OFFSET) {
-        if (timeout++ > 1000000) {
-	    xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
-	       "Timeout waiting for CRTC offset to update !\n");
-	    break;
-	}
-	usleep(1000);
-    }
-    OUTREG(RADEON_DISPLAY_BASE_ADDR, restore->display_base_addr);
-
-    if (info->HasCRTC2) {
-        /* Make sure we have sane offsets before enabling, disable
-	 * stereo and wait for offsets to catch up with hw
+	/* Make sure we have sane offsets before re-enabling the CRTCs, disable
+	 * stereo, clear offsets, and wait for offsets to catch up with hw
 	 */
-        OUTREG(RADEON_CRTC2_OFFSET_CNTL, RADEON_CRTC2_OFFSET_FLIP_CNTL);
-	OUTREG(RADEON_CRTC2_OFFSET, 0);
-	OUTREG(RADEON_CRTC2_OFFSET_CNTL, 0);
-	OUTREG(RADEON_CUR2_OFFSET, 0);
+
+	OUTREG(RADEON_CRTC_OFFSET_CNTL, RADEON_CRTC_OFFSET_FLIP_CNTL);
+	OUTREG(RADEON_CRTC_OFFSET, 0);
+	OUTREG(RADEON_CUR_OFFSET, 0);
 	timeout = 0;
-	while(INREG(RADEON_CRTC2_OFFSET) & RADEON_CRTC2_OFFSET__GUI_TRIG_OFFSET) {
+	while(INREG(RADEON_CRTC_OFFSET) & RADEON_CRTC_OFFSET__GUI_TRIG_OFFSET) {
 	    if (timeout++ > 1000000) {
-	        xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
-		  "Timeout waiting for CRTC2 offset to update !\n");
+		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+			   "Timeout waiting for CRTC offset to update !\n");
 		break;
 	    }
 	    usleep(1000);
 	}
-        OUTREG(RADEON_DISPLAY2_BASE_ADDR, restore->display2_base_addr);
+	if (info->HasCRTC2) {
+	    OUTREG(RADEON_CRTC2_OFFSET_CNTL, RADEON_CRTC2_OFFSET_FLIP_CNTL);
+	    OUTREG(RADEON_CRTC2_OFFSET, 0);
+	    OUTREG(RADEON_CUR2_OFFSET, 0);
+	    timeout = 0;
+	    while(INREG(RADEON_CRTC2_OFFSET) & RADEON_CRTC2_OFFSET__GUI_TRIG_OFFSET) {
+		if (timeout++ > 1000000) {
+		    xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+			       "Timeout waiting for CRTC2 offset to update !\n");
+		    break;
+		}
+		usleep(1000);
+	    }
+	}
     }
 
+    RADEONTRACE(("Updating display base addresses...\n"));
+
+    OUTREG(RADEON_DISPLAY_BASE_ADDR, restore->display_base_addr);
+    if (info->HasCRTC2)
+        OUTREG(RADEON_DISPLAY2_BASE_ADDR, restore->display2_base_addr);
     OUTREG(RADEON_OV0_BASE_ADDR, restore->ov0_base_addr);
     (void)INREG(RADEON_OV0_BASE_ADDR);
 
     /* More paranoia delays, wait 100ms */
     usleep(100000);
 
-    RADEONTRACE(("Done updating base addresses.\n"));
+    RADEONTRACE(("Memory map updated.\n"));
  }
 
 static void RADEONAdjustMemMapRegisters(ScrnInfoPtr pScrn, RADEONSavePtr save)
@@ -8566,7 +8560,6 @@ static Bool RADEONInit(ScrnInfoPtr pScrn, DisplayModePtr mode,
 	    return FALSE;
 	RADEONInitPLL2Registers(pScrn, save, &info->pll, dot_clock, info->DisplayType != MT_CRT);
     } else if (info->MergedFB) {
-        RADEONInitCommonRegisters(save, info);
         if (!RADEONInitCrtcRegisters(pScrn, save, 
 			((RADEONMergedDisplayModePtr)mode->Private)->CRT1, info))
             return FALSE;