[PATCH i-g-t v2 12/15] tests: Add kms_atomic_transition

[Maarten Lankhorst <maarten.lankhorst@linux.intel.com>]

This is meant as a stress test, to ensure that all combinations of
atomic transitions work correctly. This could be useful for other
drivers too, so I kept it generic. For i915 this will mainly be a
stress test on watermark calculations.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
 tests/Makefile.sources        |   1 +
 tests/kms_atomic_transition.c | 189 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 190 insertions(+)
 create mode 100644 tests/kms_atomic_transition.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 2ab25eac7764..6e86c723f78e 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -84,6 +84,7 @@ TESTS_progs_M = \
 	gvt_basic \
 	kms_addfb_basic \
 	kms_atomic \
+	kms_atomic_transition \
 	kms_chv_cursor_fail \
 	kms_cursor_crc \
 	kms_cursor_legacy \
diff --git a/tests/kms_atomic_transition.c b/tests/kms_atomic_transition.c
new file mode 100644
index 000000000000..29d89802ce40
--- /dev/null
+++ b/tests/kms_atomic_transition.c
@@ -0,0 +1,189 @@
+/*
+ * 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
+
+static void
+wm_setup_plane(igt_display_t *display, enum pipe pipe, uint32_t mask,
+	       struct igt_fb *fb, struct igt_fb *argb_fb,
+	       uint64_t cursor_width, uint64_t cursor_height)
+{
+	igt_plane_t *plane;
+
+	/*
+	* 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(display, pipe, plane) {
+		if (!((1 << plane->index) & mask)) {
+			igt_plane_set_fb(plane, NULL);
+			continue;
+		}
+
+		if (plane->is_primary)
+			igt_plane_set_fb(plane, fb);
+		else
+			igt_plane_set_fb(plane, argb_fb);
+
+		if (plane->is_cursor) {
+			igt_fb_set_size(argb_fb, plane, cursor_width, cursor_height);
+			igt_plane_set_size(plane, cursor_width, cursor_height);
+		}
+	}
+}
+
+/*
+ * 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 void
+run_transition_test(igt_display_t *display, enum pipe pipe, igt_output_t *output, bool modeset)
+{
+	struct igt_fb fb, argb_fb;
+	drmModeModeInfo *mode;
+	igt_plane_t *plane;
+	uint64_t cursor_width, cursor_height;
+	uint32_t iter_max = 1 << display->pipes[pipe].n_planes, i, j;
+
+	mode = igt_output_get_mode(output);
+
+	igt_create_fb(display->drm_fd, mode->hdisplay, mode->vdisplay,
+		      DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE, &fb);
+
+	igt_create_fb(display->drm_fd, mode->hdisplay, mode->vdisplay,
+		      DRM_FORMAT_ARGB8888, LOCAL_DRM_FORMAT_MOD_NONE, &argb_fb);
+
+	do_or_die(drmGetCap(display->drm_fd, DRM_CAP_CURSOR_WIDTH, &cursor_width));
+	if (cursor_width > mode->hdisplay)
+		cursor_width = mode->hdisplay;
+
+	do_or_die(drmGetCap(display->drm_fd, DRM_CAP_CURSOR_HEIGHT, &cursor_height));
+	if (cursor_height > mode->vdisplay)
+		cursor_height = mode->vdisplay;
+
+	if (modeset) {
+		igt_output_set_pipe(output, PIPE_NONE);
+
+		wm_setup_plane(display, pipe, 0, NULL, NULL,
+			      cursor_width, cursor_height);
+
+		igt_display_commit2(display, COMMIT_ATOMIC);
+	}
+
+	for (i = 0; i < iter_max; i++) {
+		igt_output_set_pipe(output, pipe);
+
+		wm_setup_plane(display, pipe, i, &fb, &argb_fb,
+			       cursor_width, cursor_height);
+
+		igt_display_commit2(display, COMMIT_ATOMIC);
+
+		if (modeset) {
+			igt_output_set_pipe(output, PIPE_NONE);
+
+			wm_setup_plane(display, pipe, 0, NULL, NULL,
+				       cursor_width, cursor_height);
+
+			igt_display_commit2(display, COMMIT_ATOMIC);
+		} else {
+			/* i -> i+1 will be done when i increases, can be skipped here */
+			for (j = iter_max - 1; j > i + 1; j--) {
+				wm_setup_plane(display, pipe, j, &fb, &argb_fb,
+					      cursor_width, cursor_height);
+
+				igt_display_commit2(display, COMMIT_ATOMIC);
+
+				wm_setup_plane(display, pipe, i, &fb, &argb_fb,
+					      cursor_width, cursor_height);
+				igt_display_commit2(display, COMMIT_ATOMIC);
+			}
+		}
+	}
+
+	igt_output_set_pipe(output, PIPE_NONE);
+
+	for_each_plane_on_pipe(display, pipe, plane)
+		igt_plane_set_fb(plane, NULL);
+
+	igt_display_commit2(display, COMMIT_ATOMIC);
+
+	igt_remove_fb(display->drm_fd, &fb);
+	igt_remove_fb(display->drm_fd, &argb_fb);
+}
+
+igt_main
+{
+	igt_display_t display;
+	igt_output_t *output;
+	enum pipe pipe;
+
+	igt_skip_on_simulation();
+
+	igt_fixture {
+		int valid_outputs = 0;
+
+		display.drm_fd = drm_open_driver_master(DRIVER_ANY);
+
+		kmstest_set_vt_graphics_mode();
+
+		igt_display_init(&display, display.drm_fd);
+
+		igt_require(display.is_atomic);
+
+		for_each_pipe_with_valid_output(&display, pipe, output)
+			valid_outputs++;
+
+		igt_require_f(valid_outputs, "no valid crtc/connector combinations found\n");
+	}
+
+	igt_subtest_f("plane-all-transition")
+		for_each_pipe_with_valid_output(&display, pipe, output)
+			run_transition_test(&display, pipe, output, false);
+
+	igt_subtest_f("plane-modeset-transition")
+		for_each_pipe_with_valid_output(&display, pipe, output)
+			run_transition_test(&display, pipe, output, true);
+
+	igt_fixture {
+		igt_display_fini(&display);
+	}
+}
-- 
2.5.5

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