From 1c787f0d396c309131d5f34939598d657ee2459f Mon Sep 17 00:00:00 2001
From: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
Date: Mon, 21 Aug 2006 20:38:57 +0200
Subject: Backwards compatibility code for ttms.

---
 linux-core/drm_compat.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'linux-core/drm_compat.h')

diff --git a/linux-core/drm_compat.h b/linux-core/drm_compat.h
index 407853d7..80928319 100644
--- a/linux-core/drm_compat.h
+++ b/linux-core/drm_compat.h
@@ -227,4 +227,22 @@ static inline int remap_pfn_range(struct vm_area_struct *vma, unsigned long from
 }
 #endif
 
+#include <linux/mm.h>
+#include <asm/page.h>
+
+/*
+ * Flush relevant caches and clear a VMA structure so that page references 
+ * will cause a page fault. Don't flush tlbs.
+ */
+
+extern void drm_clear_vma(struct vm_area_struct *vma,
+			  unsigned long addr, unsigned long end);
+
+/*
+ * Return the PTE protection map entries for the VMA flags given by 
+ * flags. This is a functional interface to the kernel's protection map.
+ */
+
+extern pgprot_t drm_prot_map(uint32_t flags);
+
 #endif
-- 
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