[PATCH i-g-t] tests: Add kms_rmfb testcase

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This allows us to test that RMFB works as intended by the original abi.
We create a framebuffer and try to remove the framebuffer from a crtc
using fd closing or rmfb ioctl.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
---
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index b73f48d95568..c223c363e3e8 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -97,6 +97,7 @@ TESTS_progs_M = \
 	kms_plane \
 	kms_psr_sink_crc \
 	kms_render \
+	kms_rmfb \
 	kms_rotation_crc \
 	kms_setmode \
 	kms_universal_plane \
diff --git a/tests/kms_rmfb.c b/tests/kms_rmfb.c
new file mode 100644
index 000000000000..a3fde9f43788
--- /dev/null
+++ b/tests/kms_rmfb.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright © 2016 Intel 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.
+ */
+
+#include "igt.h"
+#include "drmtest.h"
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+#ifndef DRM_CAP_CURSOR_WIDTH
+#define DRM_CAP_CURSOR_WIDTH 0x8
+#endif
+#ifndef DRM_CAP_CURSOR_HEIGHT
+#define DRM_CAP_CURSOR_HEIGHT 0x9
+#endif
+
+struct rmfb_data {
+	int drm_fd;
+	igt_display_t display;
+};
+
+/*
+ * 1. Set primary plane to a known fb.
+ * 2. Make sure getcrtc returns the correct fb id.
+ * 3. Call rmfb on the fb.
+ * 4. Make sure getcrtc returns 0 fb id.
+ *
+ * RMFB is supposed to free the framebuffers from any and all planes,
+ * so test this and make sure it works.
+ */
+static bool
+test_rmfb(struct rmfb_data *data, igt_output_t *output, enum pipe pipe, bool reopen)
+{
+	struct igt_fb fb, argb_fb;
+	drmModeModeInfo *mode;
+	igt_plane_t *plane;
+	drmModeCrtc *crtc;
+	uint64_t cursor_width, cursor_height;
+
+	igt_output_set_pipe(output, pipe);
+	igt_display_commit(&data->display);
+
+	if (!output->valid) {
+		igt_output_set_pipe(output, PIPE_ANY);
+		return false;
+	}
+
+	mode = igt_output_get_mode(output);
+
+	igt_create_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
+		      DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE, &fb);
+
+	igt_create_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
+		      DRM_FORMAT_ARGB8888, LOCAL_DRM_FORMAT_MOD_NONE, &argb_fb);
+
+	do_or_die(drmGetCap(data->drm_fd, DRM_CAP_CURSOR_WIDTH, &cursor_width));
+	if (cursor_width > mode->hdisplay)
+		cursor_width = mode->hdisplay;
+
+	do_or_die(drmGetCap(data->drm_fd, DRM_CAP_CURSOR_HEIGHT, &cursor_height));
+	if (cursor_height > mode->vdisplay)
+		cursor_height = mode->vdisplay;
+
+	/*
+	 * Make sure these buffers are suited for display use
+	 * because most of the modeset operations must be fast
+	 * later on.
+	 */
+	for_each_plane_on_pipe(&data->display, pipe, plane) {
+		if (plane->is_cursor) {
+			igt_plane_set_fb(plane, &argb_fb);
+			igt_fb_set_size(&argb_fb, plane, cursor_width, cursor_height);
+			igt_plane_set_size(plane, cursor_width, cursor_height);
+		} else {
+			igt_plane_set_fb(plane, &fb);
+		}
+	}
+
+	igt_display_commit2(&data->display, data->display.is_atomic ? COMMIT_ATOMIC : COMMIT_UNIVERSAL);
+
+	crtc = drmModeGetCrtc(data->drm_fd, output->config.crtc->crtc_id);
+
+	igt_assert_eq(crtc->buffer_id, fb.fb_id);
+
+	drmModeFreeCrtc(crtc);
+
+	if (reopen) {
+		close(data->drm_fd);
+
+		data->drm_fd = drm_open_driver_master(DRIVER_ANY);
+		drmSetClientCap(data->drm_fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
+		drmSetClientCap(data->drm_fd, DRM_CLIENT_CAP_ATOMIC, 1);
+	} else {
+		igt_remove_fb(data->drm_fd, &fb);
+		igt_remove_fb(data->drm_fd, &argb_fb);
+	}
+
+	crtc = drmModeGetCrtc(data->drm_fd, output->config.crtc->crtc_id);
+
+	igt_assert_eq(crtc->buffer_id, 0);
+
+	drmModeFreeCrtc(crtc);
+
+	for_each_plane_on_pipe(&data->display, pipe, plane) {
+		drmModePlanePtr planeres = drmModeGetPlane(data->drm_fd, plane->drm_plane->plane_id);
+
+		igt_assert_eq(planeres->fb_id, 0);
+
+		drmModeFreePlane(planeres);
+	}
+
+	igt_output_set_pipe(output, PIPE_ANY);
+	igt_display_commit2(&data->display, data->display.is_atomic ? COMMIT_ATOMIC : COMMIT_UNIVERSAL);
+
+	return true;
+}
+
+static void
+run_rmfb_test(struct rmfb_data *data, bool reopen)
+{
+	igt_output_t *output;
+	int valid_tests = 0;
+	enum pipe pipe;
+
+	for_each_connected_output(&data->display, output) {
+		for_each_pipe(&data->display, pipe) {
+			if (test_rmfb(data, output, pipe, reopen))
+				valid_tests++;
+		}
+	}
+
+	igt_require_f(valid_tests, "no valid crtc/connector combinations found\n");
+}
+
+igt_main
+{
+	struct rmfb_data data = {};
+
+	igt_skip_on_simulation();
+
+	igt_fixture {
+		data.drm_fd = drm_open_driver_master(DRIVER_ANY);
+
+		kmstest_set_vt_graphics_mode();
+
+		igt_display_init(&data.display, data.drm_fd);
+	}
+
+	igt_subtest_f("rmfb-ioctl")
+		run_rmfb_test(&data, false);
+
+	igt_subtest_f("close-fd")
+		run_rmfb_test(&data, true);
+
+	igt_fixture {
+		igt_display_fini(&data.display);
+	}
+}

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