File xf86-video-ati-ibm-xen.diff of Package xorg-x11-driver-video

diff -urpw xf86-video-ati-6.9.0/src/atipciids.h xf86-video-ati-6.9.0-mo/src/atipciids.h
--- xf86-video-ati-6.9.0/src/atipciids.h	2008-02-18 09:41:27.000000000 -0500
+++ xf86-video-ati-6.9.0-mo/src/atipciids.h	2009-04-15 10:25:47.000000000 -0400
@@ -38,6 +38,7 @@
 #define PCI_VENDOR_AMD			0x1022
 #define PCI_VENDOR_DELL			0x1028
 #define PCI_VENDOR_HP			0x103c
+#define PCI_VENDOR_IBM			0x1014
 
 #include "ati_pciids_gen.h"
 
diff -urpw xf86-video-ati-6.9.0/src/radeon_driver.c xf86-video-ati-6.9.0-mo/src/radeon_driver.c
--- xf86-video-ati-6.9.0/src/radeon_driver.c	2008-06-23 09:38:42.000000000 -0400
+++ xf86-video-ati-6.9.0-mo/src/radeon_driver.c	2009-04-15 10:24:56.000000000 -0400
@@ -2841,6 +2841,13 @@ Bool RADEONPreInit(ScrnInfoPtr pScrn, in
      * memory map
      */
     info->directRenderingEnabled = RADEONPreInitDRI(pScrn);
+
+    /*
+     * IBM server with RV100 always uses MMIO rather than CP
+     */
+    if ((info->Chipset == PCI_CHIP_RV100_QY) &&
+	(PCI_SUB_VENDOR_ID(info->PciInfo) == PCI_VENDOR_IBM))
+	info->directRenderingEnabled = 0;
 #endif
     if (!RADEONPreInitVRAM(pScrn))
 	goto fail;