[PATCH libdrm 09/11] tests: Add libkms-test library

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From: Thierry Reding <treding@xxxxxxxxxx>

This library contains abstractions for KMS that help remove the need for
a lot of boilerplate in KMS test programs.

Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
 configure.ac                        |   1 +
 tests/Makefile.am                   |   2 +-
 tests/kms/Makefile.am               |  19 ++++
 tests/kms/libkms-test-crtc.c        |  47 ++++++++
 tests/kms/libkms-test-device.c      | 218 ++++++++++++++++++++++++++++++++++++
 tests/kms/libkms-test-framebuffer.c | 157 ++++++++++++++++++++++++++
 tests/kms/libkms-test-plane.c       | 139 +++++++++++++++++++++++
 tests/kms/libkms-test-screen.c      |  92 +++++++++++++++
 tests/kms/libkms-test.h             | 120 ++++++++++++++++++++
 9 files changed, 794 insertions(+), 1 deletion(-)
 create mode 100644 tests/kms/Makefile.am
 create mode 100644 tests/kms/libkms-test-crtc.c
 create mode 100644 tests/kms/libkms-test-device.c
 create mode 100644 tests/kms/libkms-test-framebuffer.c
 create mode 100644 tests/kms/libkms-test-plane.c
 create mode 100644 tests/kms/libkms-test-screen.c
 create mode 100644 tests/kms/libkms-test.h

diff --git a/configure.ac b/configure.ac
index 58411b79b682..0a6c414bf9eb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -435,6 +435,7 @@ AC_CONFIG_FILES([
 	tests/Makefile
 	tests/modeprint/Makefile
 	tests/modetest/Makefile
+	tests/kms/Makefile
 	tests/kmstest/Makefile
 	tests/proptest/Makefile
 	tests/radeon/Makefile
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 310032732f6e..e14cc3d24a22 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -10,7 +10,7 @@ check_PROGRAMS = \
 	dristat \
 	drmstat
 
-SUBDIRS = util modeprint proptest
+SUBDIRS = util kms modeprint proptest
 
 if HAVE_LIBKMS
 SUBDIRS += kmstest modetest
diff --git a/tests/kms/Makefile.am b/tests/kms/Makefile.am
new file mode 100644
index 000000000000..c84bae05d869
--- /dev/null
+++ b/tests/kms/Makefile.am
@@ -0,0 +1,19 @@
+AM_CPPFLAGS = \
+	-I$(top_srcdir)/include/drm \
+	-I$(top_srcdir)/tests \
+	-I$(top_srcdir)
+
+AM_CFLAGS = \
+	$(WARN_CFLAGS)
+
+noinst_LTLIBRARIES = libkms-test.la
+
+libkms_test_la_SOURCES = \
+	libkms-test-crtc.c \
+	libkms-test-device.c \
+	libkms-test-framebuffer.c \
+	libkms-test-plane.c \
+	libkms-test-screen.c
+
+libkms_test_la_LIBADD = \
+	$(top_builddir)/libdrm.la
diff --git a/tests/kms/libkms-test-crtc.c b/tests/kms/libkms-test-crtc.c
new file mode 100644
index 000000000000..3adb4903919f
--- /dev/null
+++ b/tests/kms/libkms-test-crtc.c
@@ -0,0 +1,47 @@
+/*
+ * 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 (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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 "libkms-test.h"
+
+struct kms_crtc *kms_crtc_create(struct kms_device *device, uint32_t id)
+{
+	struct kms_crtc *crtc;
+
+	crtc = calloc(1, sizeof(*crtc));
+	if (!crtc)
+		return NULL;
+
+	crtc->device = device;
+	crtc->id = id;
+
+	return crtc;
+}
+
+void kms_crtc_free(struct kms_crtc *crtc)
+{
+	free(crtc);
+}
diff --git a/tests/kms/libkms-test-device.c b/tests/kms/libkms-test-device.c
new file mode 100644
index 000000000000..53c7349b89ab
--- /dev/null
+++ b/tests/kms/libkms-test-device.c
@@ -0,0 +1,218 @@
+/*
+ * 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 (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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 <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "util/common.h"
+#include "libkms-test.h"
+
+static const char *const connector_names[] = {
+	"Unknown",
+	"VGA",
+	"DVI-I",
+	"DVI-D",
+	"DVI-A",
+	"Composite",
+	"SVIDEO",
+	"LVDS",
+	"Component",
+	"9PinDIN",
+	"DisplayPort",
+	"HDMI-A",
+	"HDMI-B",
+	"TV",
+	"eDP",
+	"Virtual",
+	"DSI",
+};
+
+static void kms_device_probe_screens(struct kms_device *device)
+{
+	unsigned int counts[ARRAY_SIZE(connector_names)];
+	struct kms_screen *screen;
+	drmModeRes *res;
+	int i;
+
+	memset(counts, 0, sizeof(counts));
+
+	res = drmModeGetResources(device->fd);
+	if (!res)
+		return;
+
+	device->screens = calloc(res->count_connectors, sizeof(screen));
+	if (!device->screens)
+		return;
+
+	for (i = 0; i < res->count_connectors; i++) {
+		unsigned int *count;
+		const char *type;
+		int len;
+
+		screen = kms_screen_create(device, res->connectors[i]);
+		if (!screen)
+			continue;
+
+		/* assign a unique name to this screen */
+		type = connector_names[screen->type];
+		count = &counts[screen->type];
+
+		len = snprintf(NULL, 0, "%s-%u", type, *count);
+
+		screen->name = malloc(len + 1);
+		if (!screen->name) {
+			free(screen);
+			continue;
+		}
+
+		snprintf(screen->name, len + 1, "%s-%u", type, *count);
+		(*count)++;
+
+		device->screens[i] = screen;
+		device->num_screens++;
+	}
+
+	drmModeFreeResources(res);
+}
+
+static void kms_device_probe_crtcs(struct kms_device *device)
+{
+	struct kms_crtc *crtc;
+	drmModeRes *res;
+	int i;
+
+	res = drmModeGetResources(device->fd);
+	if (!res)
+		return;
+
+	device->crtcs = calloc(res->count_crtcs, sizeof(crtc));
+	if (!device->crtcs)
+		return;
+
+	for (i = 0; i < res->count_crtcs; i++) {
+		crtc = kms_crtc_create(device, res->crtcs[i]);
+		if (!crtc)
+			continue;
+
+		device->crtcs[i] = crtc;
+		device->num_crtcs++;
+	}
+
+	drmModeFreeResources(res);
+}
+
+static void kms_device_probe_planes(struct kms_device *device)
+{
+	struct kms_plane *plane;
+	drmModePlaneRes *res;
+	unsigned int i;
+
+	res = drmModeGetPlaneResources(device->fd);
+	if (!res)
+		return;
+
+	device->planes = calloc(res->count_planes, sizeof(plane));
+	if (!device->planes)
+		return;
+
+	for (i = 0; i < res->count_planes; i++) {
+		plane = kms_plane_create(device, res->planes[i]);
+		if (!plane)
+			continue;
+
+		device->planes[i] = plane;
+		device->num_planes++;
+	}
+
+	drmModeFreePlaneResources(res);
+}
+
+static void kms_device_probe(struct kms_device *device)
+{
+	kms_device_probe_screens(device);
+	kms_device_probe_crtcs(device);
+	kms_device_probe_planes(device);
+}
+
+struct kms_device *kms_device_open(int fd)
+{
+	struct kms_device *device;
+
+	device = calloc(1, sizeof(*device));
+	if (!device)
+		return NULL;
+
+	device->fd = fd;
+
+	kms_device_probe(device);
+
+	return device;
+}
+
+void kms_device_close(struct kms_device *device)
+{
+	unsigned int i;
+
+	for (i = 0; i < device->num_planes; i++)
+		kms_plane_free(device->planes[i]);
+
+	free(device->planes);
+
+	for (i = 0; i < device->num_crtcs; i++)
+		kms_crtc_free(device->crtcs[i]);
+
+	free(device->crtcs);
+
+	for (i = 0; i < device->num_screens; i++)
+		kms_screen_free(device->screens[i]);
+
+	free(device->screens);
+
+	if (device->fd >= 0)
+		close(device->fd);
+
+	free(device);
+}
+
+struct kms_plane *kms_device_find_plane_by_type(struct kms_device *device,
+						uint32_t type,
+						unsigned int index)
+{
+	unsigned int i;
+
+	for (i = 0; i < device->num_planes; i++) {
+		if (device->planes[i]->type == type) {
+			if (index == 0)
+				return device->planes[i];
+
+			index--;
+		}
+	}
+
+	return NULL;
+}
diff --git a/tests/kms/libkms-test-framebuffer.c b/tests/kms/libkms-test-framebuffer.c
new file mode 100644
index 000000000000..c9e5ad3c250d
--- /dev/null
+++ b/tests/kms/libkms-test-framebuffer.c
@@ -0,0 +1,157 @@
+/*
+ * 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 (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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 <string.h>
+
+#include <sys/mman.h>
+
+#include <drm_fourcc.h>
+
+#include "xf86drm.h"
+
+#include "libkms-test.h"
+
+struct kms_framebuffer *kms_framebuffer_create(struct kms_device *device,
+					       unsigned int width,
+					       unsigned int height,
+					       uint32_t format)
+{
+	uint32_t handles[4], pitches[4], offsets[4];
+	struct drm_mode_create_dumb args;
+	struct kms_framebuffer *fb;
+	int err;
+
+	fb = calloc(1, sizeof(*fb));
+	if (!fb)
+		return NULL;
+
+	fb->device = device;
+	fb->width = width;
+	fb->height = height;
+	fb->format = format;
+
+	memset(&args, 0, sizeof(args));
+	args.width = width;
+	args.height = height;
+
+	switch (format) {
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_RGBA8888:
+		args.bpp = 32;
+		break;
+
+	default:
+		free(fb);
+		return NULL;
+	}
+
+	err = drmIoctl(device->fd, DRM_IOCTL_MODE_CREATE_DUMB, &args);
+	if (err < 0) {
+		free(fb);
+		return NULL;
+	}
+
+	fb->handle = args.handle;
+	fb->pitch = args.pitch;
+	fb->size = args.size;
+
+	handles[0] = fb->handle;
+	pitches[0] = fb->pitch;
+	offsets[0] = 0;
+
+	err = drmModeAddFB2(device->fd, width, height, format, handles,
+			    pitches, offsets, &fb->id, 0);
+	if (err < 0) {
+		kms_framebuffer_free(fb);
+		return NULL;
+	}
+
+	return fb;
+}
+
+void kms_framebuffer_free(struct kms_framebuffer *fb)
+{
+	struct kms_device *device = fb->device;
+	struct drm_mode_destroy_dumb args;
+	int err;
+
+	if (fb->id) {
+		err = drmModeRmFB(device->fd, fb->id);
+		if (err < 0) {
+			/* not much we can do now */
+		}
+	}
+
+	memset(&args, 0, sizeof(args));
+	args.handle = fb->handle;
+
+	err = drmIoctl(device->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &args);
+	if (err < 0) {
+		/* not much we can do now */
+	}
+
+	free(fb);
+}
+
+int kms_framebuffer_map(struct kms_framebuffer *fb, void **ptrp)
+{
+	struct kms_device *device = fb->device;
+	struct drm_mode_map_dumb args;
+	void *ptr;
+	int err;
+
+	if (fb->ptr) {
+		*ptrp = fb->ptr;
+		return 0;
+	}
+
+	memset(&args, 0, sizeof(args));
+	args.handle = fb->handle;
+
+	err = drmIoctl(device->fd, DRM_IOCTL_MODE_MAP_DUMB, &args);
+	if (err < 0)
+		return -errno;
+
+	ptr = mmap(0, fb->size, PROT_READ | PROT_WRITE, MAP_SHARED,
+		   device->fd, args.offset);
+	if (ptr == MAP_FAILED)
+		return -errno;
+
+	*ptrp = fb->ptr = ptr;
+
+	return 0;
+}
+
+void kms_framebuffer_unmap(struct kms_framebuffer *fb)
+{
+	if (fb->ptr) {
+		munmap(fb->ptr, fb->size);
+		fb->ptr = NULL;
+	}
+}
diff --git a/tests/kms/libkms-test-plane.c b/tests/kms/libkms-test-plane.c
new file mode 100644
index 000000000000..8eb78af1dcc7
--- /dev/null
+++ b/tests/kms/libkms-test-plane.c
@@ -0,0 +1,139 @@
+/*
+ * 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 (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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 <string.h>
+
+#include "libkms-test.h"
+
+static int kms_plane_probe(struct kms_plane *plane)
+{
+	struct kms_device *device = plane->device;
+	drmModeObjectPropertiesPtr props;
+	drmModePlane *p;
+	unsigned int i;
+
+	p = drmModeGetPlane(device->fd, plane->id);
+	if (!p)
+		return -ENODEV;
+
+	/* TODO: allow dynamic assignment to CRTCs */
+	if (p->crtc_id == 0) {
+		for (i = 0; i < device->num_crtcs; i++) {
+			if (p->possible_crtcs & (1 << i)) {
+				p->crtc_id = device->crtcs[i]->id;
+				break;
+			}
+		}
+	}
+
+	for (i = 0; i < device->num_crtcs; i++) {
+		if (device->crtcs[i]->id == p->crtc_id) {
+			plane->crtc = device->crtcs[i];
+			break;
+		}
+	}
+
+	plane->formats = calloc(p->count_formats, sizeof(uint32_t));
+	if (!plane->formats)
+		return -ENOMEM;
+
+	for (i = 0; i < p->count_formats; i++)
+		plane->formats[i] = p->formats[i];
+
+	plane->num_formats = p->count_formats;
+
+	drmModeFreePlane(p);
+
+	props = drmModeObjectGetProperties(device->fd, plane->id,
+					   DRM_MODE_OBJECT_PLANE);
+	if (!props)
+		return -ENODEV;
+
+	for (i = 0; i < props->count_props; i++) {
+		drmModePropertyPtr prop;
+
+		prop = drmModeGetProperty(device->fd, props->props[i]);
+		if (prop) {
+			if (strcmp(prop->name, "type") == 0)
+				plane->type = props->prop_values[i];
+
+			drmModeFreeProperty(prop);
+		}
+	}
+
+	drmModeFreeObjectProperties(props);
+
+	return 0;
+}
+
+struct kms_plane *kms_plane_create(struct kms_device *device, uint32_t id)
+{
+	struct kms_plane *plane;
+
+	plane = calloc(1, sizeof(*plane));
+	if (!plane)
+		return NULL;
+
+	plane->device = device;
+	plane->id = id;
+
+	kms_plane_probe(plane);
+
+	return plane;
+}
+
+void kms_plane_free(struct kms_plane *plane)
+{
+	free(plane);
+}
+
+int kms_plane_set(struct kms_plane *plane, struct kms_framebuffer *fb,
+		  unsigned int x, unsigned int y)
+{
+	struct kms_device *device = plane->device;
+	int err;
+
+	err = drmModeSetPlane(device->fd, plane->id, plane->crtc->id, fb->id,
+			      0, x, y, fb->width, fb->height, 0 << 16,
+			      0 << 16, fb->width << 16, fb->height << 16);
+	if (err < 0)
+		return -errno;
+
+	return 0;
+}
+
+bool kms_plane_supports_format(struct kms_plane *plane, uint32_t format)
+{
+	unsigned int i;
+
+	for (i = 0; i < plane->num_formats; i++)
+		if (plane->formats[i] == format)
+			return true;
+
+	return false;
+}
diff --git a/tests/kms/libkms-test-screen.c b/tests/kms/libkms-test-screen.c
new file mode 100644
index 000000000000..336902228090
--- /dev/null
+++ b/tests/kms/libkms-test-screen.c
@@ -0,0 +1,92 @@
+/*
+ * 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 (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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 <string.h>
+
+#include "libkms-test.h"
+
+static void kms_screen_probe(struct kms_screen *screen)
+{
+	struct kms_device *device = screen->device;
+	drmModeConnector *con;
+
+	con = drmModeGetConnector(device->fd, screen->id);
+	if (!con)
+		return;
+
+	screen->type = con->connector_type;
+
+	if (con->connection == DRM_MODE_CONNECTED)
+		screen->connected = true;
+	else
+		screen->connected = false;
+
+	memcpy(&screen->mode, &con->modes[0], sizeof(drmModeModeInfo));
+	screen->width = screen->mode.hdisplay;
+	screen->height = screen->mode.vdisplay;
+
+	drmModeFreeConnector(con);
+}
+
+struct kms_screen *kms_screen_create(struct kms_device *device, uint32_t id)
+{
+	struct kms_screen *screen;
+
+	screen = calloc(1, sizeof(*screen));
+	if (!screen)
+		return NULL;
+
+	screen->device = device;
+	screen->id = id;
+
+	kms_screen_probe(screen);
+
+	return screen;
+}
+
+void kms_screen_free(struct kms_screen *screen)
+{
+	if (screen)
+		free(screen->name);
+
+	free(screen);
+}
+
+int kms_screen_set(struct kms_screen *screen, struct kms_crtc *crtc,
+		   struct kms_framebuffer *fb)
+{
+	struct kms_device *device = screen->device;
+	int err;
+
+	err = drmModeSetCrtc(device->fd, crtc->id, fb->id, 0, 0, &screen->id,
+			     1, &screen->mode);
+	if (err < 0)
+		return -errno;
+
+	return 0;
+}
diff --git a/tests/kms/libkms-test.h b/tests/kms/libkms-test.h
new file mode 100644
index 000000000000..7b1d02e9aa0a
--- /dev/null
+++ b/tests/kms/libkms-test.h
@@ -0,0 +1,120 @@
+/*
+ * 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 (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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 LIBKMS_TEST_H
+#define LIBKMS_TEST_H
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <xf86drmMode.h>
+
+struct kms_device {
+	int fd;
+
+	struct kms_screen **screens;
+	unsigned int num_screens;
+
+	struct kms_crtc **crtcs;
+	unsigned int num_crtcs;
+
+	struct kms_plane **planes;
+	unsigned int num_planes;
+};
+
+struct kms_device *kms_device_open(int fd);
+void kms_device_close(struct kms_device *device);
+
+struct kms_plane *kms_device_find_plane_by_type(struct kms_device *device,
+						uint32_t type,
+						unsigned int index);
+
+struct kms_crtc {
+	struct kms_device *device;
+	uint32_t id;
+};
+
+struct kms_crtc *kms_crtc_create(struct kms_device *device, uint32_t id);
+void kms_crtc_free(struct kms_crtc *crtc);
+
+struct kms_framebuffer {
+	struct kms_device *device;
+
+	unsigned int width;
+	unsigned int height;
+	unsigned int pitch;
+	uint32_t format;
+	size_t size;
+
+	uint32_t handle;
+	uint32_t id;
+
+	void *ptr;
+};
+
+struct kms_framebuffer *kms_framebuffer_create(struct kms_device *device,
+					       unsigned int width,
+					       unsigned int height,
+					       uint32_t format);
+void kms_framebuffer_free(struct kms_framebuffer *fb);
+int kms_framebuffer_map(struct kms_framebuffer *fb, void **ptrp);
+void kms_framebuffer_unmap(struct kms_framebuffer *fb);
+
+struct kms_screen {
+	struct kms_device *device;
+	bool connected;
+	uint32_t type;
+	uint32_t id;
+
+	unsigned int width;
+	unsigned int height;
+	char *name;
+
+	drmModeModeInfo mode;
+};
+
+struct kms_screen *kms_screen_create(struct kms_device *device, uint32_t id);
+void kms_screen_free(struct kms_screen *screen);
+
+int kms_screen_set(struct kms_screen *screen, struct kms_crtc *crtc,
+		   struct kms_framebuffer *fb);
+
+struct kms_plane {
+	struct kms_device *device;
+	struct kms_crtc *crtc;
+	unsigned int type;
+	uint32_t id;
+
+	uint32_t *formats;
+	unsigned int num_formats;
+};
+
+struct kms_plane *kms_plane_create(struct kms_device *device, uint32_t id);
+void kms_plane_free(struct kms_plane *plane);
+
+int kms_plane_set(struct kms_plane *plane, struct kms_framebuffer *fb,
+		  unsigned int x, unsigned int y);
+bool kms_plane_supports_format(struct kms_plane *plane, uint32_t format);
+
+#endif
-- 
2.1.3

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