From 689e4b554123bbf9af727b910dad9d1b32521f95 Mon Sep 17 00:00:00 2001
From: Ian Romanick <ian.d.romanick@intel.com>
Date: Thu, 18 Mar 2010 17:28:52 -0700
Subject: intel: Correct value of S0_VB_OFFSET_MASK to match hardware docs.

---
 src/mesa/drivers/dri/intel/intel_reg.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/intel/intel_reg.h b/src/mesa/drivers/dri/intel/intel_reg.h
index d19f1bae34..36d8180598 100644
--- a/src/mesa/drivers/dri/intel/intel_reg.h
+++ b/src/mesa/drivers/dri/intel/intel_reg.h
@@ -70,8 +70,10 @@
 
 /** @{
  * 915 definitions
+ *
+ * 915 documents say that bits 31:28 and 1 are "undefined, must be zero."
  */
-#define S0_VB_OFFSET_MASK		0xffffffc0
+#define S0_VB_OFFSET_MASK		0x0ffffffc
 #define S0_AUTO_CACHE_INV_DISABLE	(1<<0)
 /** @} */
 
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