Index: r128.h
===================================================================
RCS file: /home/x-cvs/xc/programs/Xserver/hw/xfree86/drivers/ati/r128.h,v
retrieving revision 1.8
diff -u -r1.8 r128.h
--- XFree86-4.0.3/xc/programs/Xserver/hw/xfree86/drivers/ati/r128.h	2000/12/08 19:15:33	1.8
+++ XFree86-4.0.3/xc/programs/Xserver/hw/xfree86/drivers/ati/r128.h	2001/03/02 20:16:38
@@ -280,6 +280,8 @@
     unsigned char     *AGP;             /* Map */
     int               agpMode;
 
+    CARD32            pciCommand;
+
     Bool              CCEInUse;         /* CCE is currently active */
     int               CCEMode;          /* CCE mode that server/clients use */
     int               CCEFifoSize;      /* Size of the CCE command FIFO */
Index: r128_dri.c
===================================================================
RCS file: /home/x-cvs/xc/programs/Xserver/hw/xfree86/drivers/ati/r128_dri.c,v
retrieving revision 1.7
diff -u -r1.7 r128_dri.c
--- XFree86-4.0.3/xc/programs/Xserver/hw/xfree86/drivers/ati/r128_dri.c	2000/12/12 17:17:12	1.7
+++ XFree86-4.0.3/xc/programs/Xserver/hw/xfree86/drivers/ati/r128_dri.c	2001/03/02 20:16:38
@@ -403,6 +403,9 @@
     int           s, l;
     int           flags;
 
+				/* Save the old PCI command reg */
+    info->pciCommand = pciReadLong(info->PciTag, PCI_CMD_STAT_REG);
+
     if (drmAgpAcquire(info->drmFD) < 0) {
 	xf86DrvMsg(pScreen->myNum, X_ERROR, "[agp] AGP not available\n");
 	return FALSE;
@@ -576,6 +579,11 @@
     OUTREG(R128_AGP_BASE, info->ringHandle); /* Ring buf is at AGP offset 0 */
     OUTREG(R128_AGP_CNTL, cntl);
 
+				/* Enable bus mastering in PCI config
+				   space */
+    pciWriteLong(info->PciTag, PCI_CMD_STAT_REG,
+		 info->pciCommand | PCI_CMD_MASTER_ENABLE);
+
     return TRUE;
 }
 
@@ -1020,6 +1028,9 @@
 	drmAgpFree(info->drmFD, info->agpMemHandle);
 	info->agpMemHandle = 0;
 	drmAgpRelease(info->drmFD);
+
+				/* Restore PCI command register */
+	pciWriteLong(info->PciTag, PCI_CMD_STAT_REG, info->pciCommand);
     }
 
 				/* De-allocate all DRI resources */