libdrm: Add NVIDIA Tegra support

Add the libdrm_tegra helper library to encapsulate Tegra-specific
interfaces to the DRM.

Furthermore, Tegra is added to the list of supported chips in the
modetest and vbltest programs.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

12 files changed, 556 insertions, 3 deletions

diff --git a/Makefile.am b/Makefile.am
index 3952a88e..3cb516c8 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -53,7 +53,11 @@ if HAVE_FREEDRENO
 FREEDRENO_SUBDIR = freedreno
 endif
 
-SUBDIRS = . $(LIBKMS_SUBDIR) $(INTEL_SUBDIR) $(NOUVEAU_SUBDIR) $(RADEON_SUBDIR) $(OMAP_SUBDIR) $(EXYNOS_SUBDIR) $(FREEDRENO_SUBDIR) tests man
+if HAVE_TEGRA
+TEGRA_SUBDIR = tegra
+endif
+
+SUBDIRS = . $(LIBKMS_SUBDIR) $(INTEL_SUBDIR) $(NOUVEAU_SUBDIR) $(RADEON_SUBDIR) $(OMAP_SUBDIR) $(EXYNOS_SUBDIR) $(FREEDRENO_SUBDIR) $(TEGRA_SUBDIR) tests man
 
 libdrm_la_LTLIBRARIES = libdrm.la
 libdrm_ladir = $(libdir)
diff --git a/Makefile.sources b/Makefile.sources
index d86fb2ae..566f7b55 100644
--- a/Makefile.sources
+++ b/Makefile.sources
@@ -26,6 +26,7 @@ LIBDRM_INCLUDE_H_FILES := \
 	include/drm/radeon_drm.h \
 	include/drm/savage_drm.h \
 	include/drm/sis_drm.h \
+	include/drm/tegra_drm.h \
 	include/drm/via_drm.h
 
 LIBDRM_INCLUDE_VMWGFX_H_FILES := \
diff --git a/configure.ac b/configure.ac
index 3a528f2b..253f48b0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -98,6 +98,11 @@ AC_ARG_ENABLE(freedreno-experimental-api,
 	      [Enable support for freedreno's experimental API (default: disabled)]),
 	      [FREEDRENO=$enableval], [FREEDRENO=no])
 
+AC_ARG_ENABLE(tegra-experimental-api,
+	      AS_HELP_STRING([--enable-tegra-experimental-api],
+	      [Enable support for Tegra's experimental API (default: disabled)]),
+	      [TEGRA=$enableval], [TEGRA=no])
+
 AC_ARG_ENABLE(install-test-programs,
 		  AS_HELP_STRING([--enable-install-test-programs],
 		  [Install test programs (default: no)]),
@@ -304,6 +309,11 @@ if test "x$RADEON" = xyes; then
 	AC_DEFINE(HAVE_RADEON, 1, [Have radeon support])
 fi
 
+AM_CONDITIONAL(HAVE_TEGRA, [test "x$TEGRA" = xyes])
+if test "x$TEGRA" = xyes; then
+	AC_DEFINE(HAVE_TEGRA, 1, [Have Tegra support])
+fi
+
 AM_CONDITIONAL(HAVE_INSTALL_TESTS, [test "x$INSTALL_TESTS" = xyes])
 if test "x$INSTALL_TESTS" = xyes; then
 	AC_DEFINE(HAVE_INSTALL_TESTS, 1, [Install test programs])
@@ -403,6 +413,8 @@ AC_CONFIG_FILES([
 	exynos/libdrm_exynos.pc
 	freedreno/Makefile
 	freedreno/libdrm_freedreno.pc
+	tegra/Makefile
+	tegra/libdrm_tegra.pc
 	tests/Makefile
 	tests/modeprint/Makefile
 	tests/modetest/Makefile
@@ -426,4 +438,5 @@ echo "  Nouveau API    $NOUVEAU"
 echo "  OMAP API       $OMAP"
 echo "  EXYNOS API     $EXYNOS"
 echo "  Freedreno API  $FREEDRENO"
+echo "  Tegra API      $TEGRA"
 echo ""
diff --git a/include/drm/tegra_drm.h b/include/drm/tegra_drm.h
new file mode 100644
index 00000000..be91601d
--- /dev/null
+++ b/include/drm/tegra_drm.h
@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 2012-2013, NVIDIA CORPORATION.  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, sublicense,
+ * 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 above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ */
+
+#ifndef _UAPI_TEGRA_DRM_H_
+#define _UAPI_TEGRA_DRM_H_
+
+#include <drm.h>
+
+#define DRM_TEGRA_GEM_CREATE_TILED     (1 << 0)
+#define DRM_TEGRA_GEM_CREATE_BOTTOM_UP (1 << 1)
+
+struct drm_tegra_gem_create {
+	__u64 size;
+	__u32 flags;
+	__u32 handle;
+};
+
+struct drm_tegra_gem_mmap {
+	__u32 handle;
+	__u32 offset;
+};
+
+struct drm_tegra_syncpt_read {
+	__u32 id;
+	__u32 value;
+};
+
+struct drm_tegra_syncpt_incr {
+	__u32 id;
+	__u32 pad;
+};
+
+struct drm_tegra_syncpt_wait {
+	__u32 id;
+	__u32 thresh;
+	__u32 timeout;
+	__u32 value;
+};
+
+#define DRM_TEGRA_NO_TIMEOUT	(0xffffffff)
+
+struct drm_tegra_open_channel {
+	__u32 client;
+	__u32 pad;
+	__u64 context;
+};
+
+struct drm_tegra_close_channel {
+	__u64 context;
+};
+
+struct drm_tegra_get_syncpt {
+	__u64 context;
+	__u32 index;
+	__u32 id;
+};
+
+struct drm_tegra_get_syncpt_base {
+	__u64 context;
+	__u32 syncpt;
+	__u32 id;
+};
+
+struct drm_tegra_syncpt {
+	__u32 id;
+	__u32 incrs;
+};
+
+struct drm_tegra_cmdbuf {
+	__u32 handle;
+	__u32 offset;
+	__u32 words;
+	__u32 pad;
+};
+
+struct drm_tegra_reloc {
+	struct {
+		__u32 handle;
+		__u32 offset;
+	} cmdbuf;
+	struct {
+		__u32 handle;
+		__u32 offset;
+	} target;
+	__u32 shift;
+	__u32 pad;
+};
+
+struct drm_tegra_waitchk {
+	__u32 handle;
+	__u32 offset;
+	__u32 syncpt;
+	__u32 thresh;
+};
+
+struct drm_tegra_submit {
+	__u64 context;
+	__u32 num_syncpts;
+	__u32 num_cmdbufs;
+	__u32 num_relocs;
+	__u32 num_waitchks;
+	__u32 waitchk_mask;
+	__u32 timeout;
+	__u64 syncpts;
+	__u64 cmdbufs;
+	__u64 relocs;
+	__u64 waitchks;
+	__u32 fence;		/* Return value */
+
+	__u32 reserved[5];	/* future expansion */
+};
+
+#define DRM_TEGRA_GEM_CREATE		0x00
+#define DRM_TEGRA_GEM_MMAP		0x01
+#define DRM_TEGRA_SYNCPT_READ		0x02
+#define DRM_TEGRA_SYNCPT_INCR		0x03
+#define DRM_TEGRA_SYNCPT_WAIT		0x04
+#define DRM_TEGRA_OPEN_CHANNEL		0x05
+#define DRM_TEGRA_CLOSE_CHANNEL		0x06
+#define DRM_TEGRA_GET_SYNCPT		0x07
+#define DRM_TEGRA_SUBMIT		0x08
+#define DRM_TEGRA_GET_SYNCPT_BASE	0x09
+
+#define DRM_IOCTL_TEGRA_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_CREATE, struct drm_tegra_gem_create)
+#define DRM_IOCTL_TEGRA_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_MMAP, struct drm_tegra_gem_mmap)
+#define DRM_IOCTL_TEGRA_SYNCPT_READ DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SYNCPT_READ, struct drm_tegra_syncpt_read)
+#define DRM_IOCTL_TEGRA_SYNCPT_INCR DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SYNCPT_INCR, struct drm_tegra_syncpt_incr)
+#define DRM_IOCTL_TEGRA_SYNCPT_WAIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SYNCPT_WAIT, struct drm_tegra_syncpt_wait)
+#define DRM_IOCTL_TEGRA_OPEN_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_OPEN_CHANNEL, struct drm_tegra_open_channel)
+#define DRM_IOCTL_TEGRA_CLOSE_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_CLOSE_CHANNEL, struct drm_tegra_open_channel)
+#define DRM_IOCTL_TEGRA_GET_SYNCPT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT, struct drm_tegra_get_syncpt)
+#define DRM_IOCTL_TEGRA_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SUBMIT, struct drm_tegra_submit)
+#define DRM_IOCTL_TEGRA_GET_SYNCPT_BASE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT_BASE, struct drm_tegra_get_syncpt_base)
+
+#endif
diff --git a/tegra/.gitignore b/tegra/.gitignore
new file mode 100644
index 00000000..74cfe47a
--- /dev/null
+++ b/tegra/.gitignore
@@ -0,0 +1 @@
+libdrm_tegra.pc
diff --git a/tegra/Makefile.am b/tegra/Makefile.am
new file mode 100644
index 00000000..a6474879
--- /dev/null
+++ b/tegra/Makefile.am
@@ -0,0 +1,23 @@
+AM_CPPFLAGS = \
+	-I$(top_srcdir) \
+	-I$(top_srcdir)/include/drm
+
+AM_CFLAGS = \
+	@PTHREADSTUBS_CFLAGS@ \
+	$(VISIBILITY_CFLAGS) \
+	$(WARN_CFLAGS)
+
+libdrm_tegra_ladir = $(libdir)
+libdrm_tegra_la_LTLIBRARIES = libdrm_tegra.la
+libdrm_tegra_la_LDFLAGS = -version-number 0:0:0 -no-undefined
+libdrm_tegra_la_LIBADD = ../libdrm.la @PTHREADSTUBS_LIBS@
+
+libdrm_tegra_la_SOURCES = \
+	private.h \
+	tegra.c
+
+libdrm_tegraincludedir = ${includedir}/libdrm
+libdrm_tegrainclude_HEADERS = tegra.h
+
+pkgconfigdir = @pkgconfigdir@
+pkgconfig_DATA = libdrm_tegra.pc
diff --git a/tegra/libdrm_tegra.pc.in b/tegra/libdrm_tegra.pc.in
new file mode 100644
index 00000000..2e06f49c
--- /dev/null
+++ b/tegra/libdrm_tegra.pc.in
@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: libdrm_tegra
+Description: Userspace interface to Tegra kernel DRM services
+Version: @PACKAGE_VERSION@
+Libs: -L${libdir} -ldrm_tegra
+Cflags: -I${includedir} -I${includedir}/libdrm
+Requires.private: libdrm
diff --git a/tegra/private.h b/tegra/private.h
new file mode 100644
index 00000000..9b6bc939
--- /dev/null
+++ b/tegra/private.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright © 2012, 2013 Thierry Reding
+ * Copyright © 2013 Erik Faye-Lund
+ * Copyright © 2014 NVIDIA Corporation
+ *
+ * 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, sublicense,
+ * 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 above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ */
+
+#ifndef __DRM_TEGRA_PRIVATE_H__
+#define __DRM_TEGRA_PRIVATE_H__ 1
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <libdrm.h>
+#include <xf86atomic.h>
+
+#include "tegra.h"
+
+struct drm_tegra {
+	bool close;
+	int fd;
+};
+
+struct drm_tegra_bo {
+	struct drm_tegra *drm;
+	uint32_t handle;
+	uint32_t offset;
+	uint32_t flags;
+	uint32_t size;
+	atomic_t ref;
+	void *map;
+};
+
+#endif /* __DRM_TEGRA_PRIVATE_H__ */
diff --git a/tegra/tegra.c b/tegra/tegra.c
new file mode 100644
index 00000000..ec5bf76c
--- /dev/null
+++ b/tegra/tegra.c
@@ -0,0 +1,248 @@
+/*
+ * Copyright © 2012, 2013 Thierry Reding
+ * Copyright © 2013 Erik Faye-Lund
+ * Copyright © 2014 NVIDIA Corporation
+ *
+ * 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, sublicense,
+ * 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 above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/mman.h>
+
+#include <xf86drm.h>
+
+#include <tegra_drm.h>
+
+#include "private.h"
+
+static void drm_tegra_bo_free(struct drm_tegra_bo *bo)
+{
+	struct drm_tegra *drm = bo->drm;
+	struct drm_gem_close args;
+
+	if (bo->map)
+		munmap(bo->map, bo->size);
+
+	memset(&args, 0, sizeof(args));
+	args.handle = bo->handle;
+
+	drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &args);
+
+	free(bo);
+}
+
+static int drm_tegra_wrap(struct drm_tegra **drmp, int fd, bool close)
+{
+	struct drm_tegra *drm;
+
+	if (fd < 0 || !drmp)
+		return -EINVAL;
+
+	drm = calloc(1, sizeof(*drm));
+	if (!drm)
+		return -ENOMEM;
+
+	drm->close = close;
+	drm->fd = fd;
+
+	*drmp = drm;
+
+	return 0;
+}
+
+drm_public
+int drm_tegra_new(struct drm_tegra **drmp, int fd)
+{
+	bool supported = false;
+	drmVersionPtr version;
+
+	version = drmGetVersion(fd);
+	if (!version)
+		return -ENOMEM;
+
+	if (!strncmp(version->name, "tegra", version->name_len))
+		supported = true;
+
+	drmFreeVersion(version);
+
+	if (!supported)
+		return -ENOTSUP;
+
+	return drm_tegra_wrap(drmp, fd, false);
+}
+
+drm_public
+void drm_tegra_close(struct drm_tegra *drm)
+{
+	if (!drm)
+		return;
+
+	if (drm->close)
+		close(drm->fd);
+
+	free(drm);
+}
+
+drm_public
+int drm_tegra_bo_new(struct drm_tegra_bo **bop, struct drm_tegra *drm,
+		     uint32_t flags, uint32_t size)
+{
+	struct drm_tegra_gem_create args;
+	struct drm_tegra_bo *bo;
+	int err;
+
+	if (!drm || size == 0 || !bop)
+		return -EINVAL;
+
+	bo = calloc(1, sizeof(*bo));
+	if (!bo)
+		return -ENOMEM;
+
+	atomic_set(&bo->ref, 1);
+	bo->flags = flags;
+	bo->size = size;
+	bo->drm = drm;
+
+	memset(&args, 0, sizeof(args));
+	args.flags = flags;
+	args.size = size;
+
+	err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_CREATE, &args,
+				  sizeof(args));
+	if (err < 0) {
+		err = -errno;
+		free(bo);
+		return err;
+	}
+
+	bo->handle = args.handle;
+
+	*bop = bo;
+
+	return 0;
+}
+
+drm_public
+int drm_tegra_bo_wrap(struct drm_tegra_bo **bop, struct drm_tegra *drm,
+		      uint32_t handle, uint32_t flags, uint32_t size)
+{
+	struct drm_tegra_bo *bo;
+
+	if (!drm || !bop)
+		return -EINVAL;
+
+	bo = calloc(1, sizeof(*bo));
+	if (!bo)
+		return -ENOMEM;
+
+	atomic_set(&bo->ref, 1);
+	bo->handle = handle;
+	bo->flags = flags;
+	bo->size = size;
+	bo->drm = drm;
+
+	*bop = bo;
+
+	return 0;
+}
+
+drm_public
+struct drm_tegra_bo *drm_tegra_bo_ref(struct drm_tegra_bo *bo)
+{
+	if (bo)
+		atomic_inc(&bo->ref);
+
+	return bo;
+}
+
+drm_public
+void drm_tegra_bo_unref(struct drm_tegra_bo *bo)
+{
+	if (bo && atomic_dec_and_test(&bo->ref))
+		drm_tegra_bo_free(bo);
+}
+
+drm_public
+int drm_tegra_bo_get_handle(struct drm_tegra_bo *bo, uint32_t *handle)
+{
+	if (!bo || !handle)
+		return -EINVAL;
+
+	*handle = bo->handle;
+
+	return 0;
+}
+
+drm_public
+int drm_tegra_bo_map(struct drm_tegra_bo *bo, void **ptr)
+{
+	struct drm_tegra *drm = bo->drm;
+
+	if (!bo->map) {
+		struct drm_tegra_gem_mmap args;
+		int err;
+
+		memset(&args, 0, sizeof(args));
+		args.handle = bo->handle;
+
+		err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_MMAP, &args,
+					  sizeof(args));
+		if (err < 0)
+			return -errno;
+
+		bo->offset = args.offset;
+
+		bo->map = mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
+			       drm->fd, bo->offset);
+		if (bo->map == MAP_FAILED) {
+			bo->map = NULL;
+			return -errno;
+		}
+	}
+
+	if (ptr)
+		*ptr = bo->map;
+
+	return 0;
+}
+
+drm_public
+int drm_tegra_bo_unmap(struct drm_tegra_bo *bo)
+{
+	if (!bo)
+		return -EINVAL;
+
+	if (!bo->map)
+		return 0;
+
+	if (munmap(bo->map, bo->size))
+		return -errno;
+
+	bo->map = NULL;
+
+	return 0;
+}
diff --git a/tegra/tegra.h b/tegra/tegra.h
new file mode 100644
index 00000000..ed29505d
--- /dev/null
+++ b/tegra/tegra.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright © 2012, 2013 Thierry Reding
+ * Copyright © 2013 Erik Faye-Lund
+ * Copyright © 2014 NVIDIA Corporation
+ *
+ * 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, sublicense,
+ * 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 above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ */
+
+#ifndef __DRM_TEGRA_H__
+#define __DRM_TEGRA_H__ 1
+
+#include <stdint.h>
+#include <stdlib.h>
+
+struct drm_tegra_bo;
+struct drm_tegra;
+
+int drm_tegra_new(struct drm_tegra **drmp, int fd);
+void drm_tegra_close(struct drm_tegra *drm);
+
+int drm_tegra_bo_new(struct drm_tegra_bo **bop, struct drm_tegra *drm,
+		     uint32_t flags, uint32_t size);
+int drm_tegra_bo_wrap(struct drm_tegra_bo **bop, struct drm_tegra *drm,
+		      uint32_t handle, uint32_t flags, uint32_t size);
+struct drm_tegra_bo *drm_tegra_bo_ref(struct drm_tegra_bo *bo);
+void drm_tegra_bo_unref(struct drm_tegra_bo *bo);
+int drm_tegra_bo_get_handle(struct drm_tegra_bo *bo, uint32_t *handle);
+int drm_tegra_bo_map(struct drm_tegra_bo *bo, void **ptr);
+int drm_tegra_bo_unmap(struct drm_tegra_bo *bo);
+
+#endif /* __DRM_TEGRA_H__ */
diff --git a/tests/modetest/modetest.c b/tests/modetest/modetest.c
index d3252b64..2c9a17a1 100644
--- a/tests/modetest/modetest.c
+++ b/tests/modetest/modetest.c
@@ -1456,7 +1456,7 @@ int main(int argc, char **argv)
 	int drop_master = 0;
 	int test_vsync = 0;
 	int test_cursor = 0;
-	const char *modules[] = { "i915", "radeon", "nouveau", "vmwgfx", "omapdrm", "exynos", "tilcdc", "msm", "sti" };
+	const char *modules[] = { "i915", "radeon", "nouveau", "vmwgfx", "omapdrm", "exynos", "tilcdc", "msm", "sti", "tegra" };
 	char *device = NULL;
 	char *module = NULL;
 	unsigned int i;
diff --git a/tests/vbltest/vbltest.c b/tests/vbltest/vbltest.c
index 50e29dcd..cdc1ef6b 100644
--- a/tests/vbltest/vbltest.c
+++ b/tests/vbltest/vbltest.c
@@ -105,7 +105,7 @@ static void usage(char *name)
 int main(int argc, char **argv)
 {
 	int i, c, fd, ret;
-	char *modules[] = { "i915", "radeon", "nouveau", "vmwgfx", "exynos", "omapdrm", "tilcdc", "msm" };
+	char *modules[] = { "i915", "radeon", "nouveau", "vmwgfx", "exynos", "omapdrm", "tilcdc", "msm", "tegra" };
 	drmVBlank vbl;
 	drmEventContext evctx;
 	struct vbl_info handler_info;