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diff --git a/libdrm/xf86mm.h b/libdrm/xf86mm.h
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+/**************************************************************************
+ *
+ * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND. USA.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ *
+ **************************************************************************/
+
+#ifndef _XF86MM_H_
+#define _XF86MM_H_
+#include <stddef.h>
+#include "drm.h"
+
+/*
+ * Note on multithreaded applications using this interface.
+ * Libdrm is not threadsafe, so common buffer, TTM, and fence objects need to
+ * be protected using an external mutex.
+ *
+ * Note: Don't protect the following functions, as it may lead to deadlocks:
+ * drmBOUnmap(), drmFenceBuffers().
+ * The kernel is synchronizing and refcounting buffer maps.
+ * User space only needs to refcount object usage within the same application.
+ */
+
+
+/*
+ * List macros heavily inspired by the Linux kernel
+ * list handling. No list looping yet.
+ */
+
+typedef struct _drmMMListHead
+{
+ struct _drmMMListHead *prev;
+ struct _drmMMListHead *next;
+} drmMMListHead;
+
+#define DRMINITLISTHEAD(__item) \
+ do{ \
+ (__item)->prev = (__item); \
+ (__item)->next = (__item); \
+ } while (0)
+
+#define DRMLISTADD(__item, __list) \
+ do { \
+ (__item)->prev = (__list); \
+ (__item)->next = (__list)->next; \
+ (__list)->next->prev = (__item); \
+ (__list)->next = (__item); \
+ } while (0)
+
+#define DRMLISTADDTAIL(__item, __list) \
+ do { \
+ (__item)->next = (__list); \
+ (__item)->prev = (__list)->prev; \
+ (__list)->prev->next = (__item); \
+ (__list)->prev = (__item); \
+ } while(0)
+
+#define DRMLISTDEL(__item) \
+ do { \
+ (__item)->prev->next = (__item)->next; \
+ (__item)->next->prev = (__item)->prev; \
+ } while(0)
+
+#define DRMLISTDELINIT(__item) \
+ do { \
+ (__item)->prev->next = (__item)->next; \
+ (__item)->next->prev = (__item)->prev; \
+ (__item)->next = (__item); \
+ (__item)->prev = (__item); \
+ } while(0)
+
+#define DRMLISTENTRY(__type, __item, __field) \
+ ((__type *)(((char *) (__item)) - offsetof(__type, __field)))
+
+typedef struct _drmFence{
+ unsigned handle;
+ int class;
+ unsigned type;
+ unsigned flags;
+ unsigned signaled;
+ unsigned pad[4]; /* for future expansion */
+} drmFence;
+
+typedef struct _drmBO{
+ drm_bo_type_t type;
+ unsigned handle;
+ drm_u64_t mapHandle;
+ unsigned flags;
+ unsigned mask;
+ unsigned mapFlags;
+ unsigned long size;
+ unsigned long offset;
+ unsigned long start;
+ unsigned replyFlags;
+ unsigned fenceFlags;
+ unsigned pageAlignment;
+ void *virtual;
+ void *mapVirtual;
+ int mapCount;
+ unsigned pad[8]; /* for future expansion */
+} drmBO;
+
+
+typedef struct _drmBONode {
+ drmMMListHead head;
+ drmBO *buf;
+ drm_bo_arg_t bo_arg;
+ unsigned long arg0;
+ unsigned long arg1;
+} drmBONode;
+
+typedef struct _drmBOList {
+ unsigned numTarget;
+ unsigned numCurrent;
+ unsigned numOnList;
+ drmMMListHead list;
+ drmMMListHead free;
+} drmBOList;
+
+/* Fencing */
+
+extern int drmFenceCreate(int fd, unsigned flags, int class,
+ unsigned type,
+ drmFence *fence);
+extern int drmFenceDestroy(int fd, const drmFence *fence);
+extern int drmFenceReference(int fd, unsigned handle, drmFence *fence);
+extern int drmFenceUnreference(int fd, const drmFence *fence);
+extern int drmFenceFlush(int fd, drmFence *fence, unsigned flush_type);
+extern int drmFenceSignaled(int fd, drmFence *fence,
+ unsigned fenceType, int *signaled);
+extern int drmFenceWait(int fd, unsigned flags, drmFence *fence,
+ unsigned flush_type);
+extern int drmFenceEmit(int fd, unsigned flags, drmFence *fence,
+ unsigned emit_type);
+extern int drmFenceBuffers(int fd, unsigned flags, drmFence *fence);
+
+
+/*
+ * Buffer object list functions.
+ */
+
+extern void drmBOFreeList(drmBOList *list);
+extern int drmBOResetList(drmBOList *list);
+extern void *drmBOListIterator(drmBOList *list);
+extern void *drmBOListNext(drmBOList *list, void *iterator);
+extern drmBO *drmBOListBuf(void *iterator);
+extern int drmBOCreateList(int numTarget, drmBOList *list);
+
+/*
+ * Buffer object functions.
+ */
+
+extern int drmBOCreate(int fd, unsigned long start, unsigned long size,
+ unsigned pageAlignment,void *user_buffer,
+ drm_bo_type_t type, unsigned mask,
+ unsigned hint, drmBO *buf);
+extern int drmBODestroy(int fd, drmBO *buf);
+extern int drmBOReference(int fd, unsigned handle, drmBO *buf);
+extern int drmBOUnReference(int fd, drmBO *buf);
+extern int drmBOMap(int fd, drmBO *buf, unsigned mapFlags, unsigned mapHint,
+ void **address);
+extern int drmBOUnmap(int fd, drmBO *buf);
+extern int drmBOValidate(int fd, drmBO *buf, unsigned flags, unsigned mask,
+ unsigned hint);
+extern int drmBOFence(int fd, drmBO *buf, unsigned flags, unsigned fenceHandle);
+extern int drmBOInfo(int fd, drmBO *buf);
+extern int drmBOBusy(int fd, drmBO *buf, int *busy);
+
+
+extern int drmAddValidateItem(drmBOList *list, drmBO *buf, unsigned flags,
+ unsigned mask,
+ int *newItem);
+extern int drmBOValidateList(int fd, drmBOList *list);
+extern int drmBOFenceList(int fd, drmBOList *list, unsigned fenceHandle);
+extern int drmBOWaitIdle(int fd, drmBO *buf, unsigned hint);
+
+/*
+ * Initialization functions.
+ */
+
+extern int drmMMInit(int fd, unsigned long pOffset, unsigned long pSize,
+ unsigned memType);
+extern int drmMMTakedown(int fd, unsigned memType);
+extern int drmMMLock(int fd, unsigned memType);
+extern int drmMMUnlock(int fd, unsigned memType);
+
+
+#endif