initial state (xorg-server 1.10.2)

5 files changed, 2988 insertions, 0 deletions

diff --git a/hw/xfree86/dri2/Makefile.am b/hw/xfree86/dri2/Makefile.am
new file mode 100644
index 0000000..c9fdde2
--- /dev/null
+++ b/hw/xfree86/dri2/Makefile.am
@@ -0,0 +1,16 @@
+libdri2_la_LTLIBRARIES = libdri2.la
+libdri2_la_CFLAGS = \
+	-DHAVE_XORG_CONFIG_H \
+	@DRI_CFLAGS@ \
+	@DIX_CFLAGS@ @XORG_CFLAGS@ @DRI2PROTO_CFLAGS@ @LIBDRM_CFLAGS@ \
+	-I$(top_srcdir)/hw/xfree86/common \
+	-I$(top_srcdir)/hw/xfree86/os-support/bus
+
+libdri2_la_LDFLAGS = -module -avoid-version @LIBDRM_LIBS@
+libdri2_ladir = $(moduledir)/extensions
+libdri2_la_SOURCES = \
+	dri2.c \
+	dri2.h \
+	dri2ext.c
+
+sdk_HEADERS = dri2.h
diff --git a/hw/xfree86/dri2/Makefile.in b/hw/xfree86/dri2/Makefile.in
new file mode 100644
index 0000000..3fc6563
--- /dev/null
+++ b/hw/xfree86/dri2/Makefile.in
@@ -0,0 +1,803 @@
+# Makefile.in generated by automake 1.11.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
+# Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
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+	$(top_builddir)/include/xorg-server.h \
+	$(top_builddir)/include/dix-config.h \
+	$(top_builddir)/include/xorg-config.h \
+	$(top_builddir)/include/xkb-config.h \
+	$(top_builddir)/include/xwin-config.h \
+	$(top_builddir)/include/kdrive-config.h \
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+	-DHAVE_XORG_CONFIG_H \
+	@DRI_CFLAGS@ \
+	@DIX_CFLAGS@ @XORG_CFLAGS@ @DRI2PROTO_CFLAGS@ @LIBDRM_CFLAGS@ \
+	-I$(top_srcdir)/hw/xfree86/common \
+	-I$(top_srcdir)/hw/xfree86/os-support/bus
+
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+	dri2.c \
+	dri2.h \
+	dri2ext.c
+
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+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign hw/xfree86/dri2/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign hw/xfree86/dri2/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
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+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+install-libdri2_laLTLIBRARIES: $(libdri2_la_LTLIBRARIES)
+	@$(NORMAL_INSTALL)
+	test -z "$(libdri2_ladir)" || $(MKDIR_P) "$(DESTDIR)$(libdri2_ladir)"
+	@list='$(libdri2_la_LTLIBRARIES)'; test -n "$(libdri2_ladir)" || list=; \
+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(libdri2_ladir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(libdri2_ladir)"; \
+	}
+
+uninstall-libdri2_laLTLIBRARIES:
+	@$(NORMAL_UNINSTALL)
+	@list='$(libdri2_la_LTLIBRARIES)'; test -n "$(libdri2_ladir)" || list=; \
+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdri2_ladir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(libdri2_ladir)/$$f"; \
+	done
+
+clean-libdri2_laLTLIBRARIES:
+	-test -z "$(libdri2_la_LTLIBRARIES)" || rm -f $(libdri2_la_LTLIBRARIES)
+	@list='$(libdri2_la_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+libdri2.la: $(libdri2_la_OBJECTS) $(libdri2_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(libdri2_la_LINK) -rpath $(libdri2_ladir) $(libdri2_la_OBJECTS) $(libdri2_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libdri2_la-dri2.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libdri2_la-dri2ext.Plo@am__quote@
+
+.c.o:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_FALSE@	$(AM_V_CC) @AM_BACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
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+@am__fastdepCC_FALSE@	$(COMPILE) -c $<
+
+.c.obj:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
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+
+.c.lo:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@am__fastdepCC_FALSE@	$(AM_V_CC) @AM_BACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(LTCOMPILE) -c -o $@ $<
+
+libdri2_la-dri2.lo: dri2.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libdri2_la_CFLAGS) $(CFLAGS) -MT libdri2_la-dri2.lo -MD -MP -MF $(DEPDIR)/libdri2_la-dri2.Tpo -c -o libdri2_la-dri2.lo `test -f 'dri2.c' || echo '$(srcdir)/'`dri2.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libdri2_la-dri2.Tpo $(DEPDIR)/libdri2_la-dri2.Plo
+@am__fastdepCC_FALSE@	$(AM_V_CC) @AM_BACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='dri2.c' object='libdri2_la-dri2.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libdri2_la_CFLAGS) $(CFLAGS) -c -o libdri2_la-dri2.lo `test -f 'dri2.c' || echo '$(srcdir)/'`dri2.c
+
+libdri2_la-dri2ext.lo: dri2ext.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libdri2_la_CFLAGS) $(CFLAGS) -MT libdri2_la-dri2ext.lo -MD -MP -MF $(DEPDIR)/libdri2_la-dri2ext.Tpo -c -o libdri2_la-dri2ext.lo `test -f 'dri2ext.c' || echo '$(srcdir)/'`dri2ext.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libdri2_la-dri2ext.Tpo $(DEPDIR)/libdri2_la-dri2ext.Plo
+@am__fastdepCC_FALSE@	$(AM_V_CC) @AM_BACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='dri2ext.c' object='libdri2_la-dri2ext.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
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+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+install-sdkHEADERS: $(sdk_HEADERS)
+	@$(NORMAL_INSTALL)
+	test -z "$(sdkdir)" || $(MKDIR_P) "$(DESTDIR)$(sdkdir)"
+	@list='$(sdk_HEADERS)'; test -n "$(sdkdir)" || list=; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_HEADER) $$files '$(DESTDIR)$(sdkdir)'"; \
+	  $(INSTALL_HEADER) $$files "$(DESTDIR)$(sdkdir)" || exit $$?; \
+	done
+
+uninstall-sdkHEADERS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(sdk_HEADERS)'; test -n "$(sdkdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	test -n "$$files" || exit 0; \
+	echo " ( cd '$(DESTDIR)$(sdkdir)' && rm -f" $$files ")"; \
+	cd "$(DESTDIR)$(sdkdir)" && rm -f $$files
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	mkid -fID $$unique
+tags: TAGS
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	set x; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: CTAGS
+CTAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES) $(HEADERS)
+installdirs:
+	for dir in "$(DESTDIR)$(libdri2_ladir)" "$(DESTDIR)$(sdkdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libdri2_laLTLIBRARIES clean-libtool \
+	mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-libdri2_laLTLIBRARIES install-sdkHEADERS
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
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+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
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+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
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+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
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+pdf-am:
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+ps: ps-am
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+ps-am:
+
+uninstall-am: uninstall-libdri2_laLTLIBRARIES uninstall-sdkHEADERS
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+	clean-libdri2_laLTLIBRARIES clean-libtool ctags distclean \
+	distclean-compile distclean-generic distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am \
+	install-libdri2_laLTLIBRARIES install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-sdkHEADERS \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags uninstall uninstall-am \
+	uninstall-libdri2_laLTLIBRARIES uninstall-sdkHEADERS
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/hw/xfree86/dri2/dri2.c b/hw/xfree86/dri2/dri2.c
new file mode 100644
index 0000000..10be599
--- /dev/null
+++ b/hw/xfree86/dri2/dri2.c
@@ -0,0 +1,1232 @@
+/*
+ * Copyright © 2007, 2008 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Soft-
+ * ware"), to deal in the Software without restriction, including without
+ * limitation the rights to use, copy, modify, merge, publish, distribute,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, provided that the above copyright
+ * notice(s) and this permission notice appear in all copies of the Soft-
+ * ware and that both the above copyright notice(s) and this permission
+ * notice appear in supporting documentation.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
+ * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
+ * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
+ * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
+ * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
+ * MANCE OF THIS SOFTWARE.
+ *
+ * Except as contained in this notice, the name of a copyright holder shall
+ * not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization of
+ * the copyright holder.
+ *
+ * Authors:
+ *   Kristian Høgsberg (krh@redhat.com)
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <errno.h>
+#ifdef WITH_LIBDRM
+#include <xf86drm.h>
+#endif
+#include "xf86Module.h"
+#include "list.h"
+#include "scrnintstr.h"
+#include "windowstr.h"
+#include "dixstruct.h"
+#include "dri2.h"
+#include "xf86VGAarbiter.h"
+
+#include "xf86.h"
+
+CARD8 dri2_major; /* version of DRI2 supported by DDX */
+CARD8 dri2_minor;
+
+static DevPrivateKeyRec dri2ScreenPrivateKeyRec;
+#define dri2ScreenPrivateKey (&dri2ScreenPrivateKeyRec)
+
+static DevPrivateKeyRec dri2WindowPrivateKeyRec;
+#define dri2WindowPrivateKey (&dri2WindowPrivateKeyRec)
+
+static DevPrivateKeyRec dri2PixmapPrivateKeyRec;
+#define dri2PixmapPrivateKey (&dri2PixmapPrivateKeyRec)
+
+static RESTYPE       dri2DrawableRes;
+
+typedef struct _DRI2Screen *DRI2ScreenPtr;
+
+typedef struct _DRI2Drawable {
+    DRI2ScreenPtr        dri2_screen;
+    DrawablePtr		 drawable;
+    struct list		 reference_list;
+    int			 width;
+    int			 height;
+    DRI2BufferPtr	*buffers;
+    int			 bufferCount;
+    unsigned int	 swapsPending;
+    ClientPtr		 blockedClient;
+    Bool		 blockedOnMsc;
+    int			 swap_interval;
+    CARD64		 swap_count;
+    int64_t		 target_sbc; /* -1 means no SBC wait outstanding */
+    CARD64		 last_swap_target; /* most recently queued swap target */
+    CARD64		 last_swap_msc; /* msc at completion of most recent swap */
+    CARD64		 last_swap_ust; /* ust at completion of most recent swap */
+    int			 swap_limit; /* for N-buffering */
+    unsigned long	 serialNumber;
+} DRI2DrawableRec, *DRI2DrawablePtr;
+
+typedef struct _DRI2Screen {
+    ScreenPtr			 screen;
+    int				 refcnt;
+    unsigned int		 numDrivers;
+    const char			**driverNames;
+    const char			*deviceName;
+    int				 fd;
+    unsigned int		 lastSequence;
+
+    DRI2CreateBufferProcPtr	 CreateBuffer;
+    DRI2DestroyBufferProcPtr	 DestroyBuffer;
+    DRI2CopyRegionProcPtr	 CopyRegion;
+    DRI2ScheduleSwapProcPtr	 ScheduleSwap;
+    DRI2GetMSCProcPtr		 GetMSC;
+    DRI2ScheduleWaitMSCProcPtr	 ScheduleWaitMSC;
+    DRI2AuthMagicProcPtr	 AuthMagic;
+
+    HandleExposuresProcPtr       HandleExposures;
+
+    ConfigNotifyProcPtr		 ConfigNotify;
+} DRI2ScreenRec;
+
+static DRI2ScreenPtr
+DRI2GetScreen(ScreenPtr pScreen)
+{
+    return dixLookupPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey);
+}
+
+static DRI2DrawablePtr
+DRI2GetDrawable(DrawablePtr pDraw)
+{
+    WindowPtr pWin;
+    PixmapPtr pPixmap;
+
+    switch (pDraw->type) {
+    case DRAWABLE_WINDOW:
+	pWin = (WindowPtr) pDraw;
+	return dixLookupPrivate(&pWin->devPrivates, dri2WindowPrivateKey);
+    case DRAWABLE_PIXMAP:
+	pPixmap = (PixmapPtr) pDraw;
+	return dixLookupPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey);
+    default:
+	return NULL;
+    }
+}
+
+static unsigned long
+DRI2DrawableSerial(DrawablePtr pDraw)
+{
+    ScreenPtr pScreen = pDraw->pScreen;
+    PixmapPtr pPix;
+
+    if (pDraw->type != DRAWABLE_WINDOW)
+	return pDraw->serialNumber;
+
+    pPix = pScreen->GetWindowPixmap((WindowPtr)pDraw);
+    return pPix->drawable.serialNumber;
+}
+
+static DRI2DrawablePtr
+DRI2AllocateDrawable(DrawablePtr pDraw)
+{
+    DRI2ScreenPtr   ds = DRI2GetScreen(pDraw->pScreen);
+    DRI2DrawablePtr pPriv;
+    CARD64          ust;
+    WindowPtr pWin;
+    PixmapPtr pPixmap;
+
+    pPriv = malloc(sizeof *pPriv);
+    if (pPriv == NULL)
+	return NULL;
+
+    pPriv->dri2_screen = ds;
+    pPriv->drawable = pDraw;
+    pPriv->width = pDraw->width;
+    pPriv->height = pDraw->height;
+    pPriv->buffers = NULL;
+    pPriv->bufferCount = 0;
+    pPriv->swapsPending = 0;
+    pPriv->blockedClient = NULL;
+    pPriv->blockedOnMsc = FALSE;
+    pPriv->swap_count = 0;
+    pPriv->target_sbc = -1;
+    pPriv->swap_interval = 1;
+    /* Initialize last swap target from DDX if possible */
+    if (!ds->GetMSC || !(*ds->GetMSC)(pDraw, &ust, &pPriv->last_swap_target))
+	pPriv->last_swap_target = 0;
+
+    pPriv->swap_limit = 1; /* default to double buffering */
+    pPriv->last_swap_msc = 0;
+    pPriv->last_swap_ust = 0;
+    list_init(&pPriv->reference_list);
+    pPriv->serialNumber = DRI2DrawableSerial(pDraw);
+
+    if (pDraw->type == DRAWABLE_WINDOW) {
+	pWin = (WindowPtr) pDraw;
+	dixSetPrivate(&pWin->devPrivates, dri2WindowPrivateKey, pPriv);
+    } else {
+	pPixmap = (PixmapPtr) pDraw;
+	dixSetPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey, pPriv);
+    }
+
+    return pPriv;
+}
+
+typedef struct DRI2DrawableRefRec {
+    XID		  id;
+    XID		  dri2_id;
+    DRI2InvalidateProcPtr	invalidate;
+    void	 *priv;
+    struct list	  link;
+} DRI2DrawableRefRec, *DRI2DrawableRefPtr;
+
+static DRI2DrawableRefPtr
+DRI2LookupDrawableRef(DRI2DrawablePtr pPriv, XID id)
+{
+    DRI2DrawableRefPtr ref;
+
+    list_for_each_entry(ref, &pPriv->reference_list, link) {
+	if (ref->id == id)
+	    return ref;
+    }
+    
+    return NULL;
+}
+
+static int
+DRI2AddDrawableRef(DRI2DrawablePtr pPriv, XID id, XID dri2_id,
+		   DRI2InvalidateProcPtr invalidate, void *priv)
+{
+    DRI2DrawableRefPtr ref;
+
+    ref = malloc(sizeof *ref);
+    if (ref == NULL)
+	return BadAlloc;
+	
+    if (!AddResource(dri2_id, dri2DrawableRes, pPriv)) {
+	free(ref);
+	return BadAlloc;
+    }
+    if (!DRI2LookupDrawableRef(pPriv, id))
+	if (!AddResource(id, dri2DrawableRes, pPriv)) {
+	    FreeResourceByType(dri2_id, dri2DrawableRes, TRUE);
+	    free(ref);
+	    return BadAlloc;
+        }
+
+    ref->id = id;
+    ref->dri2_id = dri2_id; 
+    ref->invalidate = invalidate;
+    ref->priv = priv;
+    list_add(&ref->link, &pPriv->reference_list);
+
+    return Success;
+}
+
+int
+DRI2CreateDrawable(ClientPtr client, DrawablePtr pDraw, XID id,
+		   DRI2InvalidateProcPtr invalidate, void *priv)
+{
+    DRI2DrawablePtr pPriv;
+    XID dri2_id;
+    int rc;
+
+    pPriv = DRI2GetDrawable(pDraw);
+    if (pPriv == NULL)
+	pPriv = DRI2AllocateDrawable(pDraw);
+    if (pPriv == NULL)
+	return BadAlloc;
+    
+    dri2_id = FakeClientID(client->index);
+    rc = DRI2AddDrawableRef(pPriv, id, dri2_id, invalidate, priv);
+    if (rc != Success)
+	return rc;
+
+    return Success;
+}
+
+static int DRI2DrawableGone(pointer p, XID id)
+{
+    DRI2DrawablePtr pPriv = p;
+    DRI2ScreenPtr   ds = pPriv->dri2_screen;
+    DRI2DrawableRefPtr ref, next;
+    WindowPtr pWin;
+    PixmapPtr pPixmap;
+    DrawablePtr pDraw;
+    int i;
+
+    list_for_each_entry_safe(ref, next, &pPriv->reference_list, link) {
+	if (ref->dri2_id == id) {
+	    list_del(&ref->link);
+	    /* If this was the last ref under this X drawable XID,
+	     * unregister the X drawable resource. */
+	    if (!DRI2LookupDrawableRef(pPriv, ref->id))
+		FreeResourceByType(ref->id, dri2DrawableRes, TRUE);
+	    free(ref);
+	    break;
+	}
+
+	if (ref->id == id) {
+	    list_del(&ref->link);
+	    FreeResourceByType(ref->dri2_id, dri2DrawableRes, TRUE);
+	    free(ref);
+	}
+    }
+
+    if (!list_is_empty(&pPriv->reference_list))
+	return Success;
+
+    pDraw = pPriv->drawable;
+    if (pDraw->type == DRAWABLE_WINDOW) {
+	pWin = (WindowPtr) pDraw;
+	dixSetPrivate(&pWin->devPrivates, dri2WindowPrivateKey, NULL);
+    } else {
+	pPixmap = (PixmapPtr) pDraw;
+	dixSetPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey, NULL);
+    }
+
+    if (pPriv->buffers != NULL) {
+	for (i = 0; i < pPriv->bufferCount; i++)
+	    (*ds->DestroyBuffer)(pDraw, pPriv->buffers[i]);
+
+	free(pPriv->buffers);
+    }
+
+    free(pPriv);
+
+    return Success;
+}
+
+static int
+find_attachment(DRI2DrawablePtr pPriv, unsigned attachment)
+{
+    int i;
+
+    if (pPriv->buffers == NULL) {
+	return -1;
+    }
+
+    for (i = 0; i < pPriv->bufferCount; i++) {
+	if ((pPriv->buffers[i] != NULL)
+	    && (pPriv->buffers[i]->attachment == attachment)) {
+	    return i;
+	}
+    }
+
+    return -1;
+}
+
+static Bool
+allocate_or_reuse_buffer(DrawablePtr pDraw, DRI2ScreenPtr ds,
+			 DRI2DrawablePtr pPriv,
+			 unsigned int attachment, unsigned int format,
+			 int dimensions_match, DRI2BufferPtr *buffer)
+{
+    int old_buf = find_attachment(pPriv, attachment);
+
+    if ((old_buf < 0)
+	|| !dimensions_match
+	|| (pPriv->buffers[old_buf]->format != format)) {
+	*buffer = (*ds->CreateBuffer)(pDraw, attachment, format);
+	pPriv->serialNumber = DRI2DrawableSerial(pDraw);
+	return TRUE;
+
+    } else {
+	*buffer = pPriv->buffers[old_buf];
+	pPriv->buffers[old_buf] = NULL;
+	return FALSE;
+    }
+}
+
+static void
+update_dri2_drawable_buffers(DRI2DrawablePtr pPriv, DrawablePtr pDraw,
+			     DRI2BufferPtr *buffers, int *out_count, int *width, int *height)
+{
+    DRI2ScreenPtr   ds = DRI2GetScreen(pDraw->pScreen);
+    int i;
+
+    if (pPriv->buffers != NULL) {
+	for (i = 0; i < pPriv->bufferCount; i++) {
+	    if (pPriv->buffers[i] != NULL) {
+		(*ds->DestroyBuffer)(pDraw, pPriv->buffers[i]);
+	    }
+	}
+
+	free(pPriv->buffers);
+    }
+
+    pPriv->buffers = buffers;
+    pPriv->bufferCount = *out_count;
+    pPriv->width = pDraw->width;
+    pPriv->height = pDraw->height;
+    *width = pPriv->width;
+    *height = pPriv->height;
+}
+
+static DRI2BufferPtr *
+do_get_buffers(DrawablePtr pDraw, int *width, int *height,
+	       unsigned int *attachments, int count, int *out_count,
+	       int has_format)
+{
+    DRI2ScreenPtr   ds = DRI2GetScreen(pDraw->pScreen);
+    DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw);
+    DRI2BufferPtr  *buffers;
+    int need_real_front = 0;
+    int need_fake_front = 0;
+    int have_fake_front = 0;
+    int front_format = 0;
+    int dimensions_match;
+    int buffers_changed = 0;
+    int i;
+
+    if (!pPriv) {
+	*width = pDraw->width;
+	*height = pDraw->height;
+	*out_count = 0;
+	return NULL;
+    }
+
+    dimensions_match = (pDraw->width == pPriv->width)
+	&& (pDraw->height == pPriv->height)
+	&& (pPriv->serialNumber == DRI2DrawableSerial(pDraw));
+
+    buffers = calloc((count + 1), sizeof(buffers[0]));
+
+    for (i = 0; i < count; i++) {
+	const unsigned attachment = *(attachments++);
+	const unsigned format = (has_format) ? *(attachments++) : 0;
+
+	if (allocate_or_reuse_buffer(pDraw, ds, pPriv, attachment,
+				     format, dimensions_match,
+				     &buffers[i]))
+		buffers_changed = 1;
+
+	if (buffers[i] == NULL)
+	    goto err_out;
+
+	/* If the drawable is a window and the front-buffer is requested,
+	 * silently add the fake front-buffer to the list of requested
+	 * attachments.  The counting logic in the loop accounts for the case
+	 * where the client requests both the fake and real front-buffer.
+	 */
+	if (attachment == DRI2BufferBackLeft) {
+	    need_real_front++;
+	    front_format = format;
+	}
+
+	if (attachment == DRI2BufferFrontLeft) {
+	    need_real_front--;
+	    front_format = format;
+
+	    if (pDraw->type == DRAWABLE_WINDOW) {
+		need_fake_front++;
+	    }
+	}
+
+	if (pDraw->type == DRAWABLE_WINDOW) {
+	    if (attachment == DRI2BufferFakeFrontLeft) {
+		need_fake_front--;
+		have_fake_front = 1;
+	    }
+	}
+    }
+
+    if (need_real_front > 0) {
+	if (allocate_or_reuse_buffer(pDraw, ds, pPriv, DRI2BufferFrontLeft,
+				     front_format, dimensions_match,
+				     &buffers[i]))
+	    buffers_changed = 1;
+
+	if (buffers[i] == NULL)
+	    goto err_out;
+	i++;
+    }
+
+    if (need_fake_front > 0) {
+	if (allocate_or_reuse_buffer(pDraw, ds, pPriv, DRI2BufferFakeFrontLeft,
+				     front_format, dimensions_match,
+				     &buffers[i]))
+	    buffers_changed = 1;
+
+	if (buffers[i] == NULL)
+	    goto err_out;
+
+	i++;
+	have_fake_front = 1;
+    }
+
+    *out_count = i;
+
+    update_dri2_drawable_buffers(pPriv, pDraw, buffers, out_count, width, height);
+
+    /* If the client is getting a fake front-buffer, pre-fill it with the
+     * contents of the real front-buffer.  This ensures correct operation of
+     * applications that call glXWaitX before calling glDrawBuffer.
+     */
+    if (have_fake_front && buffers_changed) {
+	BoxRec box;
+	RegionRec region;
+
+	box.x1 = 0;
+	box.y1 = 0;
+	box.x2 = pPriv->width;
+	box.y2 = pPriv->height;
+	RegionInit(&region, &box, 0);
+
+	DRI2CopyRegion(pDraw, &region, DRI2BufferFakeFrontLeft,
+		       DRI2BufferFrontLeft);
+    }
+
+    return pPriv->buffers;
+
+err_out:
+
+    *out_count = 0;
+
+    for (i = 0; i < count; i++) {
+	    if (buffers[i] != NULL)
+		    (*ds->DestroyBuffer)(pDraw, buffers[i]);
+    }
+
+    free(buffers);
+    buffers = NULL;
+
+    update_dri2_drawable_buffers(pPriv, pDraw, buffers, out_count, width, height);
+
+    return buffers;
+}
+
+DRI2BufferPtr *
+DRI2GetBuffers(DrawablePtr pDraw, int *width, int *height,
+	       unsigned int *attachments, int count, int *out_count)
+{
+    return do_get_buffers(pDraw, width, height, attachments, count,
+			  out_count, FALSE);
+}
+
+DRI2BufferPtr *
+DRI2GetBuffersWithFormat(DrawablePtr pDraw, int *width, int *height,
+			 unsigned int *attachments, int count, int *out_count)
+{
+    return do_get_buffers(pDraw, width, height, attachments, count,
+			  out_count, TRUE);
+}
+
+static void
+DRI2InvalidateDrawable(DrawablePtr pDraw)
+{
+    DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw);
+    DRI2DrawableRefPtr ref;
+
+    if (!pPriv)
+        return;
+
+    list_for_each_entry(ref, &pPriv->reference_list, link)
+	ref->invalidate(pDraw, ref->priv);
+}
+
+/*
+ * In the direct rendered case, we throttle the clients that have more
+ * than their share of outstanding swaps (and thus busy buffers) when a
+ * new GetBuffers request is received.  In the AIGLX case, we allow the
+ * client to get the new buffers, but throttle when the next GLX request
+ * comes in (see __glXDRIcontextWait()).
+ */
+Bool
+DRI2ThrottleClient(ClientPtr client, DrawablePtr pDraw)
+{
+    DRI2DrawablePtr pPriv;
+
+    pPriv = DRI2GetDrawable(pDraw);
+    if (pPriv == NULL)
+	return FALSE;
+
+    /* Throttle to swap limit */
+    if ((pPriv->swapsPending >= pPriv->swap_limit) &&
+	!pPriv->blockedClient) {
+	ResetCurrentRequest(client);
+	client->sequence--;
+	IgnoreClient(client);
+	pPriv->blockedClient = client;
+	return TRUE;
+    }
+
+    return FALSE;
+}
+
+static void
+__DRI2BlockClient(ClientPtr client, DRI2DrawablePtr pPriv)
+{
+    if (pPriv->blockedClient == NULL) {
+	IgnoreClient(client);
+	pPriv->blockedClient = client;
+    }
+}
+
+void
+DRI2BlockClient(ClientPtr client, DrawablePtr pDraw)
+{
+    DRI2DrawablePtr pPriv;
+
+    pPriv = DRI2GetDrawable(pDraw);
+    if (pPriv == NULL)
+	return;
+
+    __DRI2BlockClient(client, pPriv);
+    pPriv->blockedOnMsc = TRUE;
+}
+
+int
+DRI2CopyRegion(DrawablePtr pDraw, RegionPtr pRegion,
+	       unsigned int dest, unsigned int src)
+{
+    DRI2ScreenPtr   ds = DRI2GetScreen(pDraw->pScreen);
+    DRI2DrawablePtr pPriv;
+    DRI2BufferPtr   pDestBuffer, pSrcBuffer;
+    int		    i;
+
+    pPriv = DRI2GetDrawable(pDraw);
+    if (pPriv == NULL)
+	return BadDrawable;
+
+    pDestBuffer = NULL;
+    pSrcBuffer = NULL;
+    for (i = 0; i < pPriv->bufferCount; i++)
+    {
+	if (pPriv->buffers[i]->attachment == dest)
+	    pDestBuffer = (DRI2BufferPtr) pPriv->buffers[i];
+	if (pPriv->buffers[i]->attachment == src)
+	    pSrcBuffer = (DRI2BufferPtr) pPriv->buffers[i];
+    }
+    if (pSrcBuffer == NULL || pDestBuffer == NULL)
+	return BadValue;
+
+    (*ds->CopyRegion)(pDraw, pRegion, pDestBuffer, pSrcBuffer);
+
+    return Success;
+}
+
+/* Can this drawable be page flipped? */
+Bool
+DRI2CanFlip(DrawablePtr pDraw)
+{
+    ScreenPtr pScreen = pDraw->pScreen;
+    WindowPtr pWin, pRoot;
+    PixmapPtr pWinPixmap, pRootPixmap;
+
+    if (pDraw->type == DRAWABLE_PIXMAP)
+	return TRUE;
+
+    pRoot = pScreen->root;
+    pRootPixmap = pScreen->GetWindowPixmap(pRoot);
+
+    pWin = (WindowPtr) pDraw;
+    pWinPixmap = pScreen->GetWindowPixmap(pWin);
+    if (pRootPixmap != pWinPixmap)
+	return FALSE;
+    if (!RegionEqual(&pWin->clipList, &pRoot->winSize))
+	return FALSE;
+
+    /* Does the window match the pixmap exactly? */
+    if (pDraw->x != 0 ||
+	pDraw->y != 0 ||
+#ifdef COMPOSITE
+	pDraw->x != pWinPixmap->screen_x ||
+	pDraw->y != pWinPixmap->screen_y ||
+#endif
+	pDraw->width != pWinPixmap->drawable.width ||
+	pDraw->height != pWinPixmap->drawable.height)
+	return FALSE;
+
+    return TRUE;
+}
+
+/* Can we do a pixmap exchange instead of a blit? */
+Bool
+DRI2CanExchange(DrawablePtr pDraw)
+{
+    return FALSE;
+}
+
+void
+DRI2WaitMSCComplete(ClientPtr client, DrawablePtr pDraw, int frame,
+		    unsigned int tv_sec, unsigned int tv_usec)
+{
+    DRI2DrawablePtr pPriv;
+
+    pPriv = DRI2GetDrawable(pDraw);
+    if (pPriv == NULL)
+	return;
+
+    ProcDRI2WaitMSCReply(client, ((CARD64)tv_sec * 1000000) + tv_usec,
+			 frame, pPriv->swap_count);
+
+    if (pPriv->blockedClient)
+	AttendClient(pPriv->blockedClient);
+
+    pPriv->blockedClient = NULL;
+    pPriv->blockedOnMsc = FALSE;
+}
+
+static void
+DRI2WakeClient(ClientPtr client, DrawablePtr pDraw, int frame,
+	       unsigned int tv_sec, unsigned int tv_usec)
+{
+    ScreenPtr	    pScreen = pDraw->pScreen;
+    DRI2DrawablePtr pPriv;
+
+    pPriv = DRI2GetDrawable(pDraw);
+    if (pPriv == NULL) {
+        xf86DrvMsg(pScreen->myNum, X_ERROR,
+		   "[DRI2] %s: bad drawable\n", __func__);
+	return;
+    }
+
+    /*
+     * Swap completed.
+     * Wake the client iff:
+     *   - it was waiting on SBC
+     *   - was blocked due to GLX make current
+     *   - was blocked due to swap throttling
+     *   - is not blocked due to an MSC wait
+     */
+    if (pPriv->target_sbc != -1 &&
+	pPriv->target_sbc <= pPriv->swap_count) {
+	ProcDRI2WaitMSCReply(client, ((CARD64)tv_sec * 1000000) + tv_usec,
+			     frame, pPriv->swap_count);
+	pPriv->target_sbc = -1;
+
+	AttendClient(pPriv->blockedClient);
+	pPriv->blockedClient = NULL;
+    } else if (pPriv->target_sbc == -1 && !pPriv->blockedOnMsc) {
+	if (pPriv->blockedClient) {
+	    AttendClient(pPriv->blockedClient);
+	    pPriv->blockedClient = NULL;
+	}
+    }
+}
+
+void
+DRI2SwapComplete(ClientPtr client, DrawablePtr pDraw, int frame,
+		   unsigned int tv_sec, unsigned int tv_usec, int type,
+		   DRI2SwapEventPtr swap_complete, void *swap_data)
+{
+    ScreenPtr	    pScreen = pDraw->pScreen;
+    DRI2DrawablePtr pPriv;
+    CARD64          ust = 0;
+    BoxRec          box;
+    RegionRec       region;
+
+    pPriv = DRI2GetDrawable(pDraw);
+    if (pPriv == NULL) {
+        xf86DrvMsg(pScreen->myNum, X_ERROR,
+		   "[DRI2] %s: bad drawable\n", __func__);
+	return;
+    }
+
+    pPriv->swapsPending--;
+    pPriv->swap_count++;
+
+    box.x1 = 0;
+    box.y1 = 0;
+    box.x2 = pDraw->width;
+    box.y2 = pDraw->height;
+    RegionInit(&region, &box, 0);
+    DRI2CopyRegion(pDraw, &region, DRI2BufferFakeFrontLeft,
+		   DRI2BufferFrontLeft);
+
+    ust = ((CARD64)tv_sec * 1000000) + tv_usec;
+    if (swap_complete)
+	swap_complete(client, swap_data, type, ust, frame, pPriv->swap_count);
+
+    pPriv->last_swap_msc = frame;
+    pPriv->last_swap_ust = ust;
+
+    DRI2WakeClient(client, pDraw, frame, tv_sec, tv_usec);
+}
+
+Bool
+DRI2WaitSwap(ClientPtr client, DrawablePtr pDrawable)
+{
+    DRI2DrawablePtr pPriv = DRI2GetDrawable(pDrawable);
+
+    /* If we're currently waiting for a swap on this drawable, reset
+     * the request and suspend the client.  We only support one
+     * blocked client per drawable. */
+    if ((pPriv->swapsPending) &&
+	pPriv->blockedClient == NULL) {
+	ResetCurrentRequest(client);
+	client->sequence--;
+	__DRI2BlockClient(client, pPriv);
+	return TRUE;
+    }
+
+    return FALSE;
+}
+
+int
+DRI2SwapBuffers(ClientPtr client, DrawablePtr pDraw, CARD64 target_msc,
+		CARD64 divisor, CARD64 remainder, CARD64 *swap_target,
+		DRI2SwapEventPtr func, void *data)
+{
+    ScreenPtr       pScreen = pDraw->pScreen;
+    DRI2ScreenPtr   ds = DRI2GetScreen(pDraw->pScreen);
+    DRI2DrawablePtr pPriv;
+    DRI2BufferPtr   pDestBuffer = NULL, pSrcBuffer = NULL;
+    int             ret, i;
+    CARD64          ust, current_msc;
+
+    pPriv = DRI2GetDrawable(pDraw);
+    if (pPriv == NULL) {
+        xf86DrvMsg(pScreen->myNum, X_ERROR,
+		   "[DRI2] %s: bad drawable\n", __func__);
+	return BadDrawable;
+    }
+
+    for (i = 0; i < pPriv->bufferCount; i++) {
+	if (pPriv->buffers[i]->attachment == DRI2BufferFrontLeft)
+	    pDestBuffer = (DRI2BufferPtr) pPriv->buffers[i];
+	if (pPriv->buffers[i]->attachment == DRI2BufferBackLeft)
+	    pSrcBuffer = (DRI2BufferPtr) pPriv->buffers[i];
+    }
+    if (pSrcBuffer == NULL || pDestBuffer == NULL) {
+        xf86DrvMsg(pScreen->myNum, X_ERROR,
+		   "[DRI2] %s: drawable has no back or front?\n", __func__);
+	return BadDrawable;
+    }
+
+    /* Old DDX or no swap interval, just blit */
+    if (!ds->ScheduleSwap || !pPriv->swap_interval) {
+	BoxRec box;
+	RegionRec region;
+
+	box.x1 = 0;
+	box.y1 = 0;
+	box.x2 = pDraw->width;
+	box.y2 = pDraw->height;
+	RegionInit(&region, &box, 0);
+
+	pPriv->swapsPending++;
+
+	(*ds->CopyRegion)(pDraw, &region, pDestBuffer, pSrcBuffer);
+	DRI2SwapComplete(client, pDraw, target_msc, 0, 0, DRI2_BLIT_COMPLETE,
+			 func, data);
+	return Success;
+    }
+
+    /*
+     * In the simple glXSwapBuffers case, all params will be 0, and we just
+     * need to schedule a swap for the last swap target + the swap interval.
+     */
+    if (target_msc == 0 && divisor == 0 && remainder == 0) {
+	/* If the current vblank count of the drawable's crtc is lower
+	 * than the count stored in last_swap_target from a previous swap
+	 * then reinitialize last_swap_target to the current crtc's msc,
+	 * otherwise the swap will hang. This will happen if the drawable
+	 * is moved to a crtc with a lower refresh rate, or a crtc that just
+	 * got enabled.
+	 */
+	if (ds->GetMSC) {
+	    if (!(*ds->GetMSC)(pDraw, &ust, &current_msc))
+		pPriv->last_swap_target = 0;
+
+	    if (current_msc < pPriv->last_swap_target)
+		pPriv->last_swap_target = current_msc;
+
+	}
+
+	/*
+	 * Swap target for this swap is last swap target + swap interval since
+	 * we have to account for the current swap count, interval, and the
+	 * number of pending swaps.
+	 */
+	*swap_target = pPriv->last_swap_target + pPriv->swap_interval;
+
+    } else {
+	/* glXSwapBuffersMscOML could have a 0 target_msc, honor it */
+	*swap_target = target_msc;
+    }
+
+    pPriv->swapsPending++;
+    ret = (*ds->ScheduleSwap)(client, pDraw, pDestBuffer, pSrcBuffer,
+			      swap_target, divisor, remainder, func, data);
+    if (!ret) {
+	pPriv->swapsPending--; /* didn't schedule */
+        xf86DrvMsg(pScreen->myNum, X_ERROR,
+		   "[DRI2] %s: driver failed to schedule swap\n", __func__);
+	return BadDrawable;
+    }
+
+    pPriv->last_swap_target = *swap_target;
+
+    /* According to spec, return expected swapbuffers count SBC after this swap
+     * will complete.
+     */
+    *swap_target = pPriv->swap_count + pPriv->swapsPending;
+
+    DRI2InvalidateDrawable(pDraw);
+
+    return Success;
+}
+
+void
+DRI2SwapInterval(DrawablePtr pDrawable, int interval)
+{
+    ScreenPtr       pScreen = pDrawable->pScreen;
+    DRI2DrawablePtr pPriv = DRI2GetDrawable(pDrawable);
+
+    if (pPriv == NULL) {
+        xf86DrvMsg(pScreen->myNum, X_ERROR,
+		   "[DRI2] %s: bad drawable\n", __func__);
+	return;
+    }
+
+    /* fixme: check against arbitrary max? */
+    pPriv->swap_interval = interval;
+}
+
+int
+DRI2GetMSC(DrawablePtr pDraw, CARD64 *ust, CARD64 *msc, CARD64 *sbc)
+{
+    ScreenPtr pScreen = pDraw->pScreen;
+    DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
+    DRI2DrawablePtr pPriv;
+    Bool ret;
+
+    pPriv = DRI2GetDrawable(pDraw);
+    if (pPriv == NULL) {
+        xf86DrvMsg(pScreen->myNum, X_ERROR,
+		   "[DRI2] %s: bad drawable\n", __func__);
+	return BadDrawable;
+    }
+
+    if (!ds->GetMSC) {
+	*ust = 0;
+	*msc = 0;
+	*sbc = pPriv->swap_count;
+	return Success;
+    }
+
+    /*
+     * Spec needs to be updated to include unmapped or redirected
+     * drawables
+     */
+
+    ret = (*ds->GetMSC)(pDraw, ust, msc);
+    if (!ret)
+	return BadDrawable;
+
+    *sbc = pPriv->swap_count;
+
+    return Success;
+}
+
+int
+DRI2WaitMSC(ClientPtr client, DrawablePtr pDraw, CARD64 target_msc,
+	    CARD64 divisor, CARD64 remainder)
+{
+    DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
+    DRI2DrawablePtr pPriv;
+    Bool ret;
+
+    pPriv = DRI2GetDrawable(pDraw);
+    if (pPriv == NULL)
+	return BadDrawable;
+
+    /* Old DDX just completes immediately */
+    if (!ds->ScheduleWaitMSC) {
+	DRI2WaitMSCComplete(client, pDraw, target_msc, 0, 0);
+
+	return Success;
+    }
+
+    ret = (*ds->ScheduleWaitMSC)(client, pDraw, target_msc, divisor, remainder);
+    if (!ret)
+	return BadDrawable;
+
+    return Success;
+}
+
+int
+DRI2WaitSBC(ClientPtr client, DrawablePtr pDraw, CARD64 target_sbc)
+{
+    DRI2DrawablePtr pPriv;
+
+    pPriv = DRI2GetDrawable(pDraw);
+    if (pPriv == NULL)
+	return BadDrawable;
+
+    /* target_sbc == 0 means to block until all pending swaps are
+     * finished. Recalculate target_sbc to get that behaviour.
+     */
+    if (target_sbc == 0)
+        target_sbc = pPriv->swap_count + pPriv->swapsPending;
+
+    /* If current swap count already >= target_sbc, reply and
+     * return immediately with (ust, msc, sbc) triplet of
+     * most recent completed swap.
+     */
+    if (pPriv->swap_count >= target_sbc) {
+        ProcDRI2WaitMSCReply(client, pPriv->last_swap_ust,
+                             pPriv->last_swap_msc, pPriv->swap_count);
+        return Success;
+    }
+
+    pPriv->target_sbc = target_sbc;
+    __DRI2BlockClient(client, pPriv);
+
+    return Success;
+}
+
+Bool
+DRI2HasSwapControl(ScreenPtr pScreen)
+{
+    DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
+
+    return ds->ScheduleSwap && ds->GetMSC;
+}
+
+Bool
+DRI2Connect(ScreenPtr pScreen, unsigned int driverType, int *fd,
+	    const char **driverName, const char **deviceName)
+{
+    DRI2ScreenPtr ds;
+
+    if (!dixPrivateKeyRegistered(dri2ScreenPrivateKey))
+	return FALSE;
+
+    ds = DRI2GetScreen(pScreen);
+    if (ds == NULL || driverType >= ds->numDrivers ||
+	    !ds->driverNames[driverType])
+	return FALSE;
+
+    *fd = ds->fd;
+    *driverName = ds->driverNames[driverType];
+    *deviceName = ds->deviceName;
+
+    return TRUE;
+}
+
+Bool
+DRI2Authenticate(ScreenPtr pScreen, uint32_t magic)
+{
+    DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
+
+    if (ds == NULL || (*ds->AuthMagic)(ds->fd, magic))
+        return FALSE;
+
+    return TRUE;
+}
+
+static int
+DRI2ConfigNotify(WindowPtr pWin, int x, int y, int w, int h, int bw,
+		 WindowPtr pSib)
+{
+    DrawablePtr pDraw = (DrawablePtr)pWin;
+    ScreenPtr pScreen = pDraw->pScreen;
+    DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
+    DRI2DrawablePtr dd = DRI2GetDrawable(pDraw);
+    int ret;
+
+    if (ds->ConfigNotify) {
+	pScreen->ConfigNotify = ds->ConfigNotify;
+
+	ret = (*pScreen->ConfigNotify)(pWin, x, y, w, h, bw, pSib);
+
+	ds->ConfigNotify = pScreen->ConfigNotify;
+	pScreen->ConfigNotify = DRI2ConfigNotify;
+	if (ret)
+	    return ret;
+    }
+
+    if (!dd || (dd->width == w && dd->height == h))
+	return Success;
+
+    DRI2InvalidateDrawable(pDraw);
+    return Success;
+}
+
+Bool
+DRI2ScreenInit(ScreenPtr pScreen, DRI2InfoPtr info)
+{
+    DRI2ScreenPtr ds;
+    const char* driverTypeNames[] = {
+	"DRI", /* DRI2DriverDRI */
+	"VDPAU", /* DRI2DriverVDPAU */
+    };
+    unsigned int i;
+    CARD8 cur_minor;
+
+    if (info->version < 3)
+	return FALSE;
+
+    if (!xf86VGAarbiterAllowDRI(pScreen)) {
+        xf86DrvMsg(pScreen->myNum, X_WARNING,
+                  "[DRI2] Direct rendering is not supported when VGA arb is necessary for the device\n");
+        return FALSE;
+    }
+
+    if (!dixRegisterPrivateKey(&dri2ScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
+	return FALSE;
+
+    if (!dixRegisterPrivateKey(&dri2WindowPrivateKeyRec, PRIVATE_WINDOW, 0))
+	return FALSE;
+
+    if (!dixRegisterPrivateKey(&dri2PixmapPrivateKeyRec, PRIVATE_PIXMAP, 0))
+	return FALSE;
+
+    ds = calloc(1, sizeof *ds);
+    if (!ds)
+	return FALSE;
+
+    ds->screen         = pScreen;
+    ds->fd	       = info->fd;
+    ds->deviceName     = info->deviceName;
+    dri2_major         = 1;
+
+    ds->CreateBuffer   = info->CreateBuffer;
+    ds->DestroyBuffer  = info->DestroyBuffer;
+    ds->CopyRegion     = info->CopyRegion;
+
+    if (info->version >= 4) {
+	ds->ScheduleSwap = info->ScheduleSwap;
+	ds->ScheduleWaitMSC = info->ScheduleWaitMSC;
+	ds->GetMSC = info->GetMSC;
+	cur_minor = 3;
+    } else {
+	cur_minor = 1;
+    }
+
+    if (info->version >= 5) {
+        ds->AuthMagic = info->AuthMagic;
+    }
+
+    /*
+     * if the driver doesn't provide an AuthMagic function or the info struct
+     * version is too low, it relies on the old method (using libdrm) or fail
+     */
+    if (!ds->AuthMagic)
+#ifdef WITH_LIBDRM
+        ds->AuthMagic = drmAuthMagic;
+#else
+        goto err_out;
+#endif
+
+    /* Initialize minor if needed and set to minimum provied by DDX */
+    if (!dri2_minor || dri2_minor > cur_minor)
+	dri2_minor = cur_minor;
+
+    if (info->version == 3 || info->numDrivers == 0) {
+	/* Driver too old: use the old-style driverName field */
+	ds->numDrivers = 1;
+	ds->driverNames = malloc(sizeof(*ds->driverNames));
+	if (!ds->driverNames)
+	    goto err_out;
+	ds->driverNames[0] = info->driverName;
+    } else {
+	ds->numDrivers = info->numDrivers;
+	ds->driverNames = malloc(info->numDrivers * sizeof(*ds->driverNames));
+	if (!ds->driverNames)
+		goto err_out;
+	memcpy(ds->driverNames, info->driverNames,
+	       info->numDrivers * sizeof(*ds->driverNames));
+    }
+
+    dixSetPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey, ds);
+
+    ds->ConfigNotify = pScreen->ConfigNotify;
+    pScreen->ConfigNotify = DRI2ConfigNotify;
+
+    xf86DrvMsg(pScreen->myNum, X_INFO, "[DRI2] Setup complete\n");
+    for (i = 0; i < sizeof(driverTypeNames) / sizeof(driverTypeNames[0]); i++) {
+	if (i < ds->numDrivers && ds->driverNames[i]) {
+	    xf86DrvMsg(pScreen->myNum, X_INFO, "[DRI2]   %s driver: %s\n",
+		       driverTypeNames[i], ds->driverNames[i]);
+	}
+    }
+
+    return TRUE;
+
+err_out:
+    xf86DrvMsg(pScreen->myNum, X_WARNING,
+            "[DRI2] Initialization failed for info version %d.\n", info->version);
+    free(ds);
+    return FALSE;
+}
+
+void
+DRI2CloseScreen(ScreenPtr pScreen)
+{
+    DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
+
+    free(ds->driverNames);
+    free(ds);
+    dixSetPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey, NULL);
+}
+
+extern ExtensionModule dri2ExtensionModule;
+
+static pointer
+DRI2Setup(pointer module, pointer opts, int *errmaj, int *errmin)
+{
+    static Bool setupDone = FALSE;
+
+    dri2DrawableRes = CreateNewResourceType(DRI2DrawableGone, "DRI2Drawable");
+
+    if (!setupDone)
+    {
+	setupDone = TRUE;
+	LoadExtension(&dri2ExtensionModule, FALSE);
+    }
+    else
+    {
+	if (errmaj)
+	    *errmaj = LDR_ONCEONLY;
+    }
+
+    return (pointer) 1;
+}
+
+static XF86ModuleVersionInfo DRI2VersRec =
+{
+    "dri2",
+    MODULEVENDORSTRING,
+    MODINFOSTRING1,
+    MODINFOSTRING2,
+    XORG_VERSION_CURRENT,
+    1, 2, 0,
+    ABI_CLASS_EXTENSION,
+    ABI_EXTENSION_VERSION,
+    MOD_CLASS_NONE,
+    { 0, 0, 0, 0 }
+};
+
+_X_EXPORT XF86ModuleData dri2ModuleData = { &DRI2VersRec, DRI2Setup, NULL };
+
+void
+DRI2Version(int *major, int *minor)
+{
+    if (major != NULL)
+	*major = DRI2VersRec.majorversion;
+
+    if (minor != NULL)
+	*minor = DRI2VersRec.minorversion;
+}
diff --git a/hw/xfree86/dri2/dri2.h b/hw/xfree86/dri2/dri2.h
new file mode 100644
index 0000000..fe0bf6c
--- /dev/null
+++ b/hw/xfree86/dri2/dri2.h
@@ -0,0 +1,287 @@
+/*
+ * Copyright © 2007 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Soft-
+ * ware"), to deal in the Software without restriction, including without
+ * limitation the rights to use, copy, modify, merge, publish, distribute,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, provided that the above copyright
+ * notice(s) and this permission notice appear in all copies of the Soft-
+ * ware and that both the above copyright notice(s) and this permission
+ * notice appear in supporting documentation.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
+ * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
+ * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
+ * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
+ * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
+ * MANCE OF THIS SOFTWARE.
+ *
+ * Except as contained in this notice, the name of a copyright holder shall
+ * not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization of
+ * the copyright holder.
+ *
+ * Authors:
+ *   Kristian Høgsberg (krh@redhat.com)
+ */
+
+#ifndef _DRI2_H_
+#define _DRI2_H_
+
+#include <X11/extensions/dri2tokens.h>
+
+/* Version 2 structure (with format at the end) */
+typedef struct {
+    unsigned int attachment;
+    unsigned int name;
+    unsigned int pitch;
+    unsigned int cpp;
+    unsigned int flags;
+    unsigned int format;
+    void *driverPrivate;
+} DRI2BufferRec, *DRI2BufferPtr;
+
+extern CARD8 dri2_major; /* version of DRI2 supported by DDX */
+extern CARD8 dri2_minor;
+
+typedef DRI2BufferRec DRI2Buffer2Rec, *DRI2Buffer2Ptr;
+typedef void (*DRI2SwapEventPtr)(ClientPtr client, void *data, int type,
+				 CARD64 ust, CARD64 msc, CARD64 sbc);
+
+
+typedef DRI2BufferPtr	(*DRI2CreateBuffersProcPtr)(DrawablePtr pDraw,
+						    unsigned int *attachments,
+						    int count);
+typedef void		(*DRI2DestroyBuffersProcPtr)(DrawablePtr pDraw,
+						     DRI2BufferPtr buffers,
+						     int count);
+typedef void		(*DRI2CopyRegionProcPtr)(DrawablePtr pDraw,
+						 RegionPtr pRegion,
+						 DRI2BufferPtr pDestBuffer,
+						 DRI2BufferPtr pSrcBuffer);
+typedef void		(*DRI2WaitProcPtr)(WindowPtr pWin,
+					   unsigned int sequence);
+typedef int		(*DRI2AuthMagicProcPtr)(int fd, uint32_t magic);
+
+/**
+ * Schedule a buffer swap
+ *
+ * This callback is used to support glXSwapBuffers and the OML_sync_control
+ * extension (see it for a description of the params).
+ *
+ * Drivers should queue an event for the frame count that satisfies the
+ * parameters passed in.  If the event is in the future (i.e. the conditions
+ * aren't currently satisfied), the server may block the client at the next
+ * GLX request using DRI2WaitSwap. When the event arrives, drivers should call
+ * \c DRI2SwapComplete, which will handle waking the client and returning
+ * the appropriate data.
+ *
+ * The DDX is responsible for doing a flip, exchange, or blit of the swap
+ * when the corresponding event arrives.  The \c DRI2CanFlip and
+ * \c DRI2CanExchange functions can be used as helpers for this purpose.
+ *
+ * \param client client pointer (used for block/unblock)
+ * \param pDraw drawable whose count we want
+ * \param pDestBuffer current front buffer
+ * \param pSrcBuffer current back buffer
+ * \param target_msc frame count to wait for
+ * \param divisor divisor for condition equation
+ * \param remainder remainder for division equation
+ * \param func function to call when the swap completes
+ * \param data data for the callback \p func.
+ */
+typedef int		(*DRI2ScheduleSwapProcPtr)(ClientPtr client,
+						   DrawablePtr pDraw,
+						   DRI2BufferPtr pDestBuffer,
+						   DRI2BufferPtr pSrcBuffer,
+						   CARD64 *target_msc,
+						   CARD64 divisor,
+						   CARD64 remainder,
+						   DRI2SwapEventPtr func,
+						   void *data);
+typedef DRI2BufferPtr	(*DRI2CreateBufferProcPtr)(DrawablePtr pDraw,
+						   unsigned int attachment,
+						   unsigned int format);
+typedef void		(*DRI2DestroyBufferProcPtr)(DrawablePtr pDraw,
+						    DRI2BufferPtr buffer);
+/**
+ * Get current media stamp counter values
+ *
+ * This callback is used to support the SGI_video_sync and OML_sync_control
+ * extensions.
+ *
+ * Drivers should return the current frame counter and the timestamp from
+ * when the returned frame count was last incremented.
+ *
+ * The count should correspond to the screen where the drawable is currently
+ * visible.  If the drawable isn't visible (e.g. redirected), the server
+ * should return BadDrawable to the client, pending GLX spec updates to
+ * define this behavior.
+ *
+ * \param pDraw drawable whose count we want
+ * \param ust timestamp from when the count was last incremented.
+ * \param mst current frame count
+ */
+typedef int		(*DRI2GetMSCProcPtr)(DrawablePtr pDraw, CARD64 *ust,
+					     CARD64 *msc);
+/**
+ * Schedule a frame count related wait
+ *
+ * This callback is used to support the SGI_video_sync and OML_sync_control
+ * extensions.  See those specifications for details on how to handle
+ * the divisor and remainder parameters.
+ *
+ * Drivers should queue an event for the frame count that satisfies the
+ * parameters passed in.  If the event is in the future (i.e. the conditions
+ * aren't currently satisfied), the driver should block the client using
+ * \c DRI2BlockClient.  When the event arrives, drivers should call
+ * \c DRI2WaitMSCComplete, which will handle waking the client and returning
+ * the appropriate data.
+ *
+ * \param client client pointer (used for block/unblock)
+ * \param pDraw drawable whose count we want
+ * \param target_msc frame count to wait for
+ * \param divisor divisor for condition equation
+ * \param remainder remainder for division equation
+ */
+typedef int		(*DRI2ScheduleWaitMSCProcPtr)(ClientPtr client,
+						      DrawablePtr pDraw,
+						      CARD64 target_msc,
+						      CARD64 divisor,
+						      CARD64 remainder);
+
+typedef void		(*DRI2InvalidateProcPtr)(DrawablePtr pDraw,
+						 void *data);
+
+/**
+ * Version of the DRI2InfoRec structure defined in this header
+ */
+#define DRI2INFOREC_VERSION 5
+
+typedef struct {
+    unsigned int version;	/**< Version of this struct */
+    int fd;
+    const char *driverName;
+    const char *deviceName;
+
+    DRI2CreateBufferProcPtr	CreateBuffer;
+    DRI2DestroyBufferProcPtr	DestroyBuffer;
+    DRI2CopyRegionProcPtr	CopyRegion;
+    DRI2WaitProcPtr		Wait;
+
+    /* added in version 4 */
+
+    DRI2ScheduleSwapProcPtr	ScheduleSwap;
+    DRI2GetMSCProcPtr		GetMSC;
+    DRI2ScheduleWaitMSCProcPtr	ScheduleWaitMSC;
+
+    /* number of drivers in the driverNames array */
+    unsigned int numDrivers;
+    /* array of driver names, indexed by DRI2Driver* driver types */
+    /* a name of NULL means that driver is not supported */
+    const char * const *driverNames;
+
+    /* added in version 5 */
+
+    DRI2AuthMagicProcPtr	AuthMagic;
+}  DRI2InfoRec, *DRI2InfoPtr;
+
+extern _X_EXPORT int DRI2EventBase;
+
+extern _X_EXPORT Bool DRI2ScreenInit(ScreenPtr	pScreen,
+		    DRI2InfoPtr info);
+
+extern _X_EXPORT void DRI2CloseScreen(ScreenPtr pScreen);
+
+extern _X_EXPORT Bool DRI2HasSwapControl(ScreenPtr pScreen);
+
+extern _X_EXPORT Bool DRI2Connect(ScreenPtr pScreen,
+		 unsigned int driverType,
+		 int *fd,
+		 const char **driverName,
+		 const char **deviceName);
+
+extern _X_EXPORT Bool DRI2Authenticate(ScreenPtr pScreen, uint32_t magic);
+
+extern _X_EXPORT int DRI2CreateDrawable(ClientPtr client,
+					DrawablePtr pDraw,
+					XID id,
+					DRI2InvalidateProcPtr invalidate,
+					void *priv);
+
+extern _X_EXPORT void DRI2DestroyDrawable(DrawablePtr pDraw);
+
+extern _X_EXPORT DRI2BufferPtr *DRI2GetBuffers(DrawablePtr pDraw,
+			     int *width,
+			     int *height,
+			     unsigned int *attachments,
+			     int count,
+			     int *out_count);
+
+extern _X_EXPORT int DRI2CopyRegion(DrawablePtr pDraw,
+		   RegionPtr pRegion,
+		   unsigned int dest,
+		   unsigned int src);
+
+/**
+ * Determine the major and minor version of the DRI2 extension.
+ *
+ * Provides a mechanism to other modules (e.g., 2D drivers) to determine the
+ * version of the DRI2 extension.  While it is possible to peek directly at
+ * the \c XF86ModuleData from a layered module, such a module will fail to
+ * load (due to an unresolved symbol) if the DRI2 extension is not loaded.
+ *
+ * \param major  Location to store the major verion of the DRI2 extension
+ * \param minor  Location to store the minor verion of the DRI2 extension
+ *
+ * \note
+ * This interface was added some time after the initial release of the DRI2
+ * module.  Layered modules that wish to use this interface must first test
+ * its existance by calling \c xf86LoaderCheckSymbol.
+ */
+extern _X_EXPORT void DRI2Version(int *major, int *minor);
+
+extern _X_EXPORT DRI2BufferPtr *DRI2GetBuffersWithFormat(DrawablePtr pDraw,
+	int *width, int *height, unsigned int *attachments, int count,
+	int *out_count);
+
+extern _X_EXPORT void DRI2SwapInterval(DrawablePtr pDrawable, int interval);
+extern _X_EXPORT int DRI2SwapBuffers(ClientPtr client, DrawablePtr pDrawable,
+				     CARD64 target_msc, CARD64 divisor,
+				     CARD64 remainder, CARD64 *swap_target,
+				     DRI2SwapEventPtr func, void *data);
+extern _X_EXPORT Bool DRI2WaitSwap(ClientPtr client, DrawablePtr pDrawable);
+
+extern _X_EXPORT int DRI2GetMSC(DrawablePtr pDrawable, CARD64 *ust,
+				CARD64 *msc, CARD64 *sbc);
+extern _X_EXPORT int DRI2WaitMSC(ClientPtr client, DrawablePtr pDrawable,
+				 CARD64 target_msc, CARD64 divisor,
+				 CARD64 remainder);
+extern _X_EXPORT int ProcDRI2WaitMSCReply(ClientPtr client, CARD64 ust,
+					  CARD64 msc, CARD64 sbc);
+extern _X_EXPORT int DRI2WaitSBC(ClientPtr client, DrawablePtr pDraw,
+				 CARD64 target_sbc);
+extern _X_EXPORT Bool DRI2ThrottleClient(ClientPtr client, DrawablePtr pDraw);
+
+extern _X_EXPORT Bool DRI2CanFlip(DrawablePtr pDraw);
+
+extern _X_EXPORT Bool DRI2CanExchange(DrawablePtr pDraw);
+
+/* Note: use *only* for MSC related waits */
+extern _X_EXPORT void DRI2BlockClient(ClientPtr client, DrawablePtr pDraw);
+
+extern _X_EXPORT void DRI2SwapComplete(ClientPtr client, DrawablePtr pDraw,
+				       int frame, unsigned int tv_sec,
+				       unsigned int tv_usec, int type,
+				       DRI2SwapEventPtr swap_complete,
+				       void *swap_data);
+extern _X_EXPORT void DRI2WaitMSCComplete(ClientPtr client, DrawablePtr pDraw,
+					  int frame, unsigned int tv_sec,
+					  unsigned int tv_usec);
+
+#endif
diff --git a/hw/xfree86/dri2/dri2ext.c b/hw/xfree86/dri2/dri2ext.c
new file mode 100644
index 0000000..4e48e65
--- /dev/null
+++ b/hw/xfree86/dri2/dri2ext.c
@@ -0,0 +1,650 @@
+/*
+ * Copyright © 2008 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Soft-
+ * ware"), to deal in the Software without restriction, including without
+ * limitation the rights to use, copy, modify, merge, publish, distribute,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, provided that the above copyright
+ * notice(s) and this permission notice appear in all copies of the Soft-
+ * ware and that both the above copyright notice(s) and this permission
+ * notice appear in supporting documentation.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
+ * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
+ * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
+ * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
+ * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
+ * MANCE OF THIS SOFTWARE.
+ *
+ * Except as contained in this notice, the name of a copyright holder shall
+ * not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization of
+ * the copyright holder.
+ *
+ * Authors:
+ *   Kristian Høgsberg (krh@redhat.com)
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include <X11/extensions/dri2proto.h>
+#include <X11/extensions/xfixeswire.h>
+#include "dixstruct.h"
+#include "scrnintstr.h"
+#include "pixmapstr.h"
+#include "extnsionst.h"
+#include "xfixes.h"
+#include "dri2.h"
+#include "protocol-versions.h"
+
+/* The only xf86 include */
+#include "xf86Module.h"
+
+static ExtensionEntry	*dri2Extension;
+
+static Bool
+validDrawable(ClientPtr client, XID drawable, Mask access_mode,
+	      DrawablePtr *pDrawable, int *status)
+{
+    *status = dixLookupDrawable(pDrawable, drawable, client,
+				M_DRAWABLE_WINDOW | M_DRAWABLE_PIXMAP,
+				access_mode);
+    if (*status != Success) {
+	client->errorValue = drawable;
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+static int
+ProcDRI2QueryVersion(ClientPtr client)
+{
+    REQUEST(xDRI2QueryVersionReq);
+    xDRI2QueryVersionReply rep;
+    int n;
+
+    if (client->swapped)
+	swaps(&stuff->length, n);
+
+    REQUEST_SIZE_MATCH(xDRI2QueryVersionReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    rep.majorVersion = dri2_major;
+    rep.minorVersion = dri2_minor;
+
+    if (client->swapped) {
+    	swaps(&rep.sequenceNumber, n);
+    	swapl(&rep.length, n);
+	swapl(&rep.majorVersion, n);
+	swapl(&rep.minorVersion, n);
+    }
+
+    WriteToClient(client, sizeof(xDRI2QueryVersionReply), &rep);
+
+    return Success;
+}
+
+static int
+ProcDRI2Connect(ClientPtr client)
+{
+    REQUEST(xDRI2ConnectReq);
+    xDRI2ConnectReply rep;
+    DrawablePtr pDraw;
+    int fd, status;
+    const char *driverName;
+    const char *deviceName;
+
+    REQUEST_SIZE_MATCH(xDRI2ConnectReq);
+    if (!validDrawable(client, stuff->window, DixGetAttrAccess,
+		       &pDraw, &status))
+	return status;
+    
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    rep.driverNameLength = 0;
+    rep.deviceNameLength = 0;
+
+    if (!DRI2Connect(pDraw->pScreen,
+		     stuff->driverType, &fd, &driverName, &deviceName))
+	goto fail;
+
+    rep.driverNameLength = strlen(driverName);
+    rep.deviceNameLength = strlen(deviceName);
+    rep.length = (rep.driverNameLength + 3) / 4 +
+	    (rep.deviceNameLength + 3) / 4;
+
+ fail:
+    WriteToClient(client, sizeof(xDRI2ConnectReply), &rep);
+    WriteToClient(client, rep.driverNameLength, driverName);
+    WriteToClient(client, rep.deviceNameLength, deviceName);
+
+    return Success;
+}
+
+static int
+ProcDRI2Authenticate(ClientPtr client)
+{
+    REQUEST(xDRI2AuthenticateReq);
+    xDRI2AuthenticateReply rep;
+    DrawablePtr pDraw;
+    int status;
+
+    REQUEST_SIZE_MATCH(xDRI2AuthenticateReq);
+    if (!validDrawable(client, stuff->window, DixGetAttrAccess,
+		       &pDraw, &status))
+	return status;
+
+    rep.type = X_Reply;
+    rep.sequenceNumber = client->sequence;
+    rep.length = 0;
+    rep.authenticated = DRI2Authenticate(pDraw->pScreen, stuff->magic);
+    WriteToClient(client, sizeof(xDRI2AuthenticateReply), &rep);
+
+    return Success;
+}
+
+static void
+DRI2InvalidateBuffersEvent(DrawablePtr pDraw, void *priv)
+{
+    xDRI2InvalidateBuffers event;
+    ClientPtr client = priv;
+
+    event.type = DRI2EventBase + DRI2_InvalidateBuffers;
+    event.drawable = pDraw->id;
+
+    WriteEventsToClient(client, 1, (xEvent *)&event);
+}
+
+static int
+ProcDRI2CreateDrawable(ClientPtr client)
+{
+    REQUEST(xDRI2CreateDrawableReq);
+    DrawablePtr pDrawable;
+    int status;
+
+    REQUEST_SIZE_MATCH(xDRI2CreateDrawableReq);
+
+    if (!validDrawable(client, stuff->drawable, DixAddAccess,
+		       &pDrawable, &status))
+	return status;
+
+    status = DRI2CreateDrawable(client, pDrawable, stuff->drawable,
+				DRI2InvalidateBuffersEvent, client);
+    if (status != Success)
+	return status;
+
+    return Success;
+}
+
+static int
+ProcDRI2DestroyDrawable(ClientPtr client)
+{
+    REQUEST(xDRI2DestroyDrawableReq);
+    DrawablePtr pDrawable;
+    int status;
+
+    REQUEST_SIZE_MATCH(xDRI2DestroyDrawableReq);
+    if (!validDrawable(client, stuff->drawable, DixRemoveAccess,
+		       &pDrawable, &status))
+	return status;
+
+    return Success;
+}
+
+
+static int
+send_buffers_reply(ClientPtr client, DrawablePtr pDrawable,
+		   DRI2BufferPtr *buffers, int count, int width, int height)
+{
+    xDRI2GetBuffersReply rep;
+    int skip = 0;
+    int i;
+
+    if (buffers == NULL)
+	    return BadAlloc;
+
+    if (pDrawable->type == DRAWABLE_WINDOW) {
+	for (i = 0; i < count; i++) {
+	    /* Do not send the real front buffer of a window to the client.
+	     */
+	    if (buffers[i]->attachment == DRI2BufferFrontLeft) {
+		skip++;
+		continue;
+	    }
+	}
+    }
+
+    rep.type = X_Reply;
+    rep.length = (count - skip) * sizeof(xDRI2Buffer) / 4;
+    rep.sequenceNumber = client->sequence;
+    rep.width = width;
+    rep.height = height;
+    rep.count = count - skip;
+    WriteToClient(client, sizeof(xDRI2GetBuffersReply), &rep);
+
+    for (i = 0; i < count; i++) {
+	xDRI2Buffer buffer;
+
+	/* Do not send the real front buffer of a window to the client.
+	 */
+	if ((pDrawable->type == DRAWABLE_WINDOW)
+	    && (buffers[i]->attachment == DRI2BufferFrontLeft)) {
+	    continue;
+	}
+
+	buffer.attachment = buffers[i]->attachment;
+	buffer.name = buffers[i]->name;
+	buffer.pitch = buffers[i]->pitch;
+	buffer.cpp = buffers[i]->cpp;
+	buffer.flags = buffers[i]->flags;
+	WriteToClient(client, sizeof(xDRI2Buffer), &buffer);
+    }
+    return Success;
+}
+
+
+static int
+ProcDRI2GetBuffers(ClientPtr client)
+{
+    REQUEST(xDRI2GetBuffersReq);
+    DrawablePtr pDrawable;
+    DRI2BufferPtr *buffers;
+    int status, width, height, count;
+    unsigned int *attachments;
+
+    REQUEST_FIXED_SIZE(xDRI2GetBuffersReq, stuff->count * 4);
+    if (!validDrawable(client, stuff->drawable, DixReadAccess | DixWriteAccess,
+		       &pDrawable, &status))
+	return status;
+
+    if (DRI2ThrottleClient(client, pDrawable))
+	return Success;
+
+    attachments = (unsigned int *) &stuff[1];
+    buffers = DRI2GetBuffers(pDrawable, &width, &height,
+			     attachments, stuff->count, &count);
+
+
+    return send_buffers_reply(client, pDrawable, buffers, count, width, height);
+
+}
+
+static int
+ProcDRI2GetBuffersWithFormat(ClientPtr client)
+{
+    REQUEST(xDRI2GetBuffersReq);
+    DrawablePtr pDrawable;
+    DRI2BufferPtr *buffers;
+    int status, width, height, count;
+    unsigned int *attachments;
+
+    REQUEST_FIXED_SIZE(xDRI2GetBuffersReq, stuff->count * (2 * 4));
+    if (!validDrawable(client, stuff->drawable, DixReadAccess | DixWriteAccess,
+		       &pDrawable, &status))
+	return status;
+
+    if (DRI2ThrottleClient(client, pDrawable))
+	return Success;
+
+    attachments = (unsigned int *) &stuff[1];
+    buffers = DRI2GetBuffersWithFormat(pDrawable, &width, &height,
+				       attachments, stuff->count, &count);
+
+    return send_buffers_reply(client, pDrawable, buffers, count, width, height);
+}
+
+static int
+ProcDRI2CopyRegion(ClientPtr client)
+{
+    REQUEST(xDRI2CopyRegionReq);
+    xDRI2CopyRegionReply rep;
+    DrawablePtr pDrawable;
+    int status;
+    RegionPtr pRegion;
+
+    REQUEST_SIZE_MATCH(xDRI2CopyRegionReq);
+
+    if (!validDrawable(client, stuff->drawable, DixWriteAccess,
+		       &pDrawable, &status))
+	return status;
+
+    VERIFY_REGION(pRegion, stuff->region, client, DixReadAccess);
+
+    status = DRI2CopyRegion(pDrawable, pRegion, stuff->dest, stuff->src);
+    if (status != Success)
+	return status;
+
+    /* CopyRegion needs to be a round trip to make sure the X server
+     * queues the swap buffer rendering commands before the DRI client
+     * continues rendering.  The reply has a bitmask to signal the
+     * presense of optional return values as well, but we're not using
+     * that yet.
+     */
+
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+
+    WriteToClient(client, sizeof(xDRI2CopyRegionReply), &rep);
+
+    return Success;
+}
+
+static void
+load_swap_reply(xDRI2SwapBuffersReply *rep, CARD64 sbc)
+{
+    rep->swap_hi = sbc >> 32;
+    rep->swap_lo = sbc & 0xffffffff;
+}
+
+static CARD64
+vals_to_card64(CARD32 lo, CARD32 hi)
+{
+    return (CARD64)hi << 32 | lo;
+}
+
+static void
+DRI2SwapEvent(ClientPtr client, void *data, int type, CARD64 ust, CARD64 msc,
+	      CARD64 sbc)
+{
+    xDRI2BufferSwapComplete event;
+    DrawablePtr pDrawable = data;
+
+    event.type = DRI2EventBase + DRI2_BufferSwapComplete;
+    event.event_type = type;
+    event.drawable = pDrawable->id;
+    event.ust_hi = (CARD64)ust >> 32;
+    event.ust_lo = ust & 0xffffffff;
+    event.msc_hi = (CARD64)msc >> 32;
+    event.msc_lo = msc & 0xffffffff;
+    event.sbc_hi = (CARD64)sbc >> 32;
+    event.sbc_lo = sbc & 0xffffffff;
+
+    WriteEventsToClient(client, 1, (xEvent *)&event);
+}
+
+static int
+ProcDRI2SwapBuffers(ClientPtr client)
+{
+    REQUEST(xDRI2SwapBuffersReq);
+    xDRI2SwapBuffersReply rep;
+    DrawablePtr pDrawable;
+    CARD64 target_msc, divisor, remainder, swap_target;
+    int status;
+
+    REQUEST_SIZE_MATCH(xDRI2SwapBuffersReq);
+
+    if (!validDrawable(client, stuff->drawable,
+		       DixReadAccess | DixWriteAccess, &pDrawable, &status))
+	return status;
+
+    /*
+     * Ensures an out of control client can't exhaust our swap queue, and
+     * also orders swaps.
+     */
+    if (DRI2ThrottleClient(client, pDrawable))
+	return Success;
+
+    target_msc = vals_to_card64(stuff->target_msc_lo, stuff->target_msc_hi);
+    divisor = vals_to_card64(stuff->divisor_lo, stuff->divisor_hi);
+    remainder = vals_to_card64(stuff->remainder_lo, stuff->remainder_hi);
+
+    status = DRI2SwapBuffers(client, pDrawable, target_msc, divisor, remainder,
+			     &swap_target, DRI2SwapEvent, pDrawable);
+    if (status != Success)
+	return BadDrawable;
+
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    load_swap_reply(&rep, swap_target);
+
+    WriteToClient(client, sizeof(xDRI2SwapBuffersReply), &rep);
+
+    return Success;
+}
+
+static void
+load_msc_reply(xDRI2MSCReply *rep, CARD64 ust, CARD64 msc, CARD64 sbc)
+{
+    rep->ust_hi = ust >> 32;
+    rep->ust_lo = ust & 0xffffffff;
+    rep->msc_hi = msc >> 32;
+    rep->msc_lo = msc & 0xffffffff;
+    rep->sbc_hi = sbc >> 32;
+    rep->sbc_lo = sbc & 0xffffffff;
+}
+
+static int
+ProcDRI2GetMSC(ClientPtr client)
+{
+    REQUEST(xDRI2GetMSCReq);
+    xDRI2MSCReply rep;
+    DrawablePtr pDrawable;
+    CARD64 ust, msc, sbc;
+    int status;
+
+    REQUEST_SIZE_MATCH(xDRI2GetMSCReq);
+
+    if (!validDrawable(client, stuff->drawable, DixReadAccess, &pDrawable,
+		       &status))
+	return status;
+
+    status = DRI2GetMSC(pDrawable, &ust, &msc, &sbc);
+    if (status != Success)
+	return status;
+
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    load_msc_reply(&rep, ust, msc, sbc);
+
+    WriteToClient(client, sizeof(xDRI2MSCReply), &rep);
+
+    return Success;
+}
+
+static int
+ProcDRI2WaitMSC(ClientPtr client)
+{
+    REQUEST(xDRI2WaitMSCReq);
+    DrawablePtr pDrawable;
+    CARD64 target, divisor, remainder;
+    int status;
+
+    /* FIXME: in restart case, client may be gone at this point */
+
+    REQUEST_SIZE_MATCH(xDRI2WaitMSCReq);
+
+    if (!validDrawable(client, stuff->drawable, DixReadAccess, &pDrawable,
+		       &status))
+	return status;
+
+    target = vals_to_card64(stuff->target_msc_lo, stuff->target_msc_hi);
+    divisor = vals_to_card64(stuff->divisor_lo, stuff->divisor_hi);
+    remainder = vals_to_card64(stuff->remainder_lo, stuff->remainder_hi);
+
+    status = DRI2WaitMSC(client, pDrawable, target, divisor, remainder);
+    if (status != Success)
+	return status;
+
+    return Success;
+}
+
+int
+ProcDRI2WaitMSCReply(ClientPtr client, CARD64 ust, CARD64 msc, CARD64 sbc)
+{
+    xDRI2MSCReply rep;
+
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    load_msc_reply(&rep, ust, msc, sbc);
+
+    WriteToClient(client, sizeof(xDRI2MSCReply), &rep);
+
+    return Success;
+}
+
+static int
+ProcDRI2SwapInterval(ClientPtr client)
+{
+    REQUEST(xDRI2SwapIntervalReq);
+    DrawablePtr pDrawable;
+    int status;
+
+    /* FIXME: in restart case, client may be gone at this point */
+
+    REQUEST_SIZE_MATCH(xDRI2SwapIntervalReq);
+
+    if (!validDrawable(client, stuff->drawable, DixReadAccess | DixWriteAccess,
+		       &pDrawable, &status))
+	return status;
+
+    DRI2SwapInterval(pDrawable, stuff->interval);
+
+    return Success;
+}
+
+static int
+ProcDRI2WaitSBC(ClientPtr client)
+{
+    REQUEST(xDRI2WaitSBCReq);
+    DrawablePtr pDrawable;
+    CARD64 target;
+    int status;
+
+    REQUEST_SIZE_MATCH(xDRI2WaitSBCReq);
+
+    if (!validDrawable(client, stuff->drawable, DixReadAccess, &pDrawable,
+		       &status))
+	return status;
+
+    target = vals_to_card64(stuff->target_sbc_lo, stuff->target_sbc_hi);
+    status = DRI2WaitSBC(client, pDrawable, target);
+
+    return status;
+}
+
+static int
+ProcDRI2Dispatch (ClientPtr client)
+{
+    REQUEST(xReq);
+    
+    switch (stuff->data) {
+    case X_DRI2QueryVersion:
+	return ProcDRI2QueryVersion(client);
+    }
+
+    if (!LocalClient(client))
+	return BadRequest;
+
+    switch (stuff->data) {
+    case X_DRI2Connect:
+	return ProcDRI2Connect(client);
+    case X_DRI2Authenticate:
+	return ProcDRI2Authenticate(client);
+    case X_DRI2CreateDrawable:
+	return ProcDRI2CreateDrawable(client);
+    case X_DRI2DestroyDrawable:
+	return ProcDRI2DestroyDrawable(client);
+    case X_DRI2GetBuffers:
+	return ProcDRI2GetBuffers(client);
+    case X_DRI2CopyRegion:
+	return ProcDRI2CopyRegion(client);
+    case X_DRI2GetBuffersWithFormat:
+	return ProcDRI2GetBuffersWithFormat(client);
+    case X_DRI2SwapBuffers:
+	return ProcDRI2SwapBuffers(client);
+    case X_DRI2GetMSC:
+	return ProcDRI2GetMSC(client);
+    case X_DRI2WaitMSC:
+	return ProcDRI2WaitMSC(client);
+    case X_DRI2WaitSBC:
+	return ProcDRI2WaitSBC(client);
+    case X_DRI2SwapInterval:
+	return ProcDRI2SwapInterval(client);
+    default:
+	return BadRequest;
+    }
+}
+
+static int
+SProcDRI2Connect(ClientPtr client)
+{
+    REQUEST(xDRI2ConnectReq);
+    xDRI2ConnectReply rep;
+    int n;
+
+    /* If the client is swapped, it's not local.  Talk to the hand. */
+
+    swaps(&stuff->length, n);
+    if (sizeof(*stuff) / 4 != client->req_len)
+	return BadLength;
+
+    rep.sequenceNumber = client->sequence;
+    swaps(&rep.sequenceNumber, n);
+    rep.length = 0;
+    rep.driverNameLength = 0;
+    rep.deviceNameLength = 0;
+
+    return Success;
+}
+
+static int
+SProcDRI2Dispatch (ClientPtr client)
+{
+    REQUEST(xReq);
+
+    /*
+     * Only local clients are allowed DRI access, but remote clients
+     * still need these requests to find out cleanly.
+     */
+    switch (stuff->data)
+    {
+    case X_DRI2QueryVersion:
+	return ProcDRI2QueryVersion(client);
+    case X_DRI2Connect:
+	return SProcDRI2Connect(client);
+    default:
+	return BadRequest;
+    }
+}
+
+int DRI2EventBase;
+
+static void
+DRI2ExtensionInit(void)
+{
+    dri2Extension = AddExtension(DRI2_NAME,
+				 DRI2NumberEvents,
+				 DRI2NumberErrors,
+				 ProcDRI2Dispatch,
+				 SProcDRI2Dispatch,
+				 NULL,
+				 StandardMinorOpcode);
+
+    DRI2EventBase = dri2Extension->eventBase;
+}
+
+extern Bool noDRI2Extension;
+
+_X_HIDDEN ExtensionModule dri2ExtensionModule = {
+    DRI2ExtensionInit,
+    DRI2_NAME,
+    &noDRI2Extension,
+    NULL,
+    NULL
+};